AuroraMiddleware/gtk2
1
0
Fork 0
forked from AuroraMiddleware/gtk
Code Issues Pull Requests Projects Releases Wiki Activity
4d481ecb95
gtk2/gtk/gtkiconview.c
Benjamin Otte 73b4a62f51 snapshot: Redo debug messages 
Instead of every snapshot function having debug messages, have an
explicit gtk_snapshot_push_debug() function that appends a debug node.
2018-04-24 04:06:58 +02:00

6856 lines
205 KiB
C
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* gtkiconview.c
* Copyright (C) 2002, 2004 Anders Carlsson <andersca@gnu.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtkiconviewprivate.h"
#include "gtkaccessible.h"
#include "gtkadjustmentprivate.h"
#include "gtkbindings.h"
#include "gtkcellareabox.h"
#include "gtkcellareacontext.h"
#include "gtkcelllayout.h"
#include "gtkcellrenderer.h"
#include "gtkcellrendererpixbuf.h"
#include "gtkcellrenderertext.h"
#include "gtkcombobox.h"
#include "gtkcssnodeprivate.h"
#include "gtkdnd.h"
#include "gtkdragdest.h"
#include "gtkdragsource.h"
#include "gtkentry.h"
#include "gtkintl.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkorientable.h"
#include "gtkprivate.h"
#include "gtkscrollable.h"
#include "gtksizerequest.h"
#include "gtksnapshot.h"
#include "gtkstylecontextprivate.h"
#include "gtktreednd.h"
#include "gtktypebuiltins.h"
#include "gtkwidgetprivate.h"
#include "gtkwindow.h"
#include "gtkeventcontrollerkey.h"
#include "a11y/gtkiconviewaccessibleprivate.h"
#include <string.h>
/**
* SECTION:gtkiconview
* @title: GtkIconView
* @short_description: A widget which displays a list of icons in a grid
*
* #GtkIconView provides an alternative view on a #GtkTreeModel.
* It displays the model as a grid of icons with labels. Like
* #GtkTreeView, it allows to select one or multiple items
* (depending on the selection mode, see gtk_icon_view_set_selection_mode()).
* In addition to selection with the arrow keys, #GtkIconView supports
* rubberband selection, which is controlled by dragging the pointer.
*
* Note that if the tree model is backed by an actual tree store (as
* opposed to a flat list where the mapping to icons is obvious),
* #GtkIconView will only display the first level of the tree and
* ignore the tree’s branches.
*
* # CSS nodes
*
* |[<!-- language="plain" -->
* iconview.view
* ╰── [rubberband]
* ]|
*
* GtkIconView has a single CSS node with name iconview and style class .view.
* For rubberband selection, a subnode with name rubberband is used.
*/
#define SCROLL_EDGE_SIZE 15
typedef struct _GtkIconViewChild GtkIconViewChild;
struct _GtkIconViewChild
{
GtkWidget *widget;
GdkRectangle area;
};
/* Signals */
enum
{
ITEM_ACTIVATED,
SELECTION_CHANGED,
SELECT_ALL,
UNSELECT_ALL,
SELECT_CURSOR_ITEM,
TOGGLE_CURSOR_ITEM,
MOVE_CURSOR,
ACTIVATE_CURSOR_ITEM,
LAST_SIGNAL
};
/* Properties */
enum
{
PROP_0,
PROP_PIXBUF_COLUMN,
PROP_TEXT_COLUMN,
PROP_MARKUP_COLUMN,
PROP_SELECTION_MODE,
PROP_ITEM_ORIENTATION,
PROP_MODEL,
PROP_COLUMNS,
PROP_ITEM_WIDTH,
PROP_SPACING,
PROP_ROW_SPACING,
PROP_COLUMN_SPACING,
PROP_MARGIN,
PROP_REORDERABLE,
PROP_TOOLTIP_COLUMN,
PROP_ITEM_PADDING,
PROP_CELL_AREA,
PROP_HADJUSTMENT,
PROP_VADJUSTMENT,
PROP_HSCROLL_POLICY,
PROP_VSCROLL_POLICY,
PROP_ACTIVATE_ON_SINGLE_CLICK
};
/* GObject vfuncs */
static void gtk_icon_view_cell_layout_init (GtkCellLayoutIface *iface);
static void gtk_icon_view_dispose (GObject *object);
static void gtk_icon_view_constructed (GObject *object);
static void gtk_icon_view_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_icon_view_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
/* GtkWidget vfuncs */
static void gtk_icon_view_destroy (GtkWidget *widget);
static GtkSizeRequestMode gtk_icon_view_get_request_mode (GtkWidget *widget);
static void gtk_icon_view_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline);
static void gtk_icon_view_size_allocate (GtkWidget *widget,
const GtkAllocation *allocation,
int baseline);
static void gtk_icon_view_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot);
static void gtk_icon_view_motion (GtkEventController *controller,
double x,
double y,
gpointer user_data);
static void gtk_icon_view_leave (GtkEventController *controller,
gpointer user_data);
static void gtk_icon_view_button_press (GtkGestureMultiPress *gesture,
int n_press,
double x,
double y,
gpointer user_data);
static void gtk_icon_view_button_release (GtkGestureMultiPress *gesture,
int n_press,
double x,
double y,
gpointer user_data);
static gboolean gtk_icon_view_key_pressed (GtkEventControllerKey *controller,
guint keyval,
guint keycode,
GdkModifierType state,
GtkWidget *widget);
/* GtkContainer vfuncs */
static void gtk_icon_view_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_icon_view_forall (GtkContainer *container,
GtkCallback callback,
gpointer callback_data);
/* GtkIconView vfuncs */
static void gtk_icon_view_real_select_all (GtkIconView *icon_view);
static void gtk_icon_view_real_unselect_all (GtkIconView *icon_view);
static void gtk_icon_view_real_select_cursor_item (GtkIconView *icon_view);
static void gtk_icon_view_real_toggle_cursor_item (GtkIconView *icon_view);
static gboolean gtk_icon_view_real_activate_cursor_item (GtkIconView *icon_view);
/* Internal functions */
static void gtk_icon_view_set_hadjustment_values (GtkIconView *icon_view);
static void gtk_icon_view_set_vadjustment_values (GtkIconView *icon_view);
static void gtk_icon_view_set_hadjustment (GtkIconView *icon_view,
GtkAdjustment *adjustment);
static void gtk_icon_view_set_vadjustment (GtkIconView *icon_view,
GtkAdjustment *adjustment);
static void gtk_icon_view_adjustment_changed (GtkAdjustment *adjustment,
GtkIconView *icon_view);
static void gtk_icon_view_layout (GtkIconView *icon_view);
static void gtk_icon_view_snapshot_item (GtkIconView *icon_view,
GtkSnapshot *snapshot,
GtkIconViewItem *item,
gint x,
gint y,
gboolean draw_focus);
static void gtk_icon_view_snapshot_rubberband (GtkIconView *icon_view,
GtkSnapshot *snapshot);
static void gtk_icon_view_queue_draw_path (GtkIconView *icon_view,
GtkTreePath *path);
static void gtk_icon_view_queue_draw_item (GtkIconView *icon_view,
GtkIconViewItem *item);
static void gtk_icon_view_start_rubberbanding (GtkIconView *icon_view,
GdkDevice *device,
gint x,
gint y);
static void gtk_icon_view_stop_rubberbanding (GtkIconView *icon_view);
static void gtk_icon_view_update_rubberband_selection (GtkIconView *icon_view);
static gboolean gtk_icon_view_item_hit_test (GtkIconView *icon_view,
GtkIconViewItem *item,
gint x,
gint y,
gint width,
gint height);
static gboolean gtk_icon_view_unselect_all_internal (GtkIconView *icon_view);
static void gtk_icon_view_update_rubberband (GtkIconView *icon_view);
static void gtk_icon_view_item_invalidate_size (GtkIconViewItem *item);
static void gtk_icon_view_invalidate_sizes (GtkIconView *icon_view);
static void gtk_icon_view_add_move_binding (GtkBindingSet *binding_set,
guint keyval,
guint modmask,
GtkMovementStep step,
gint count);
static gboolean gtk_icon_view_real_move_cursor (GtkIconView *icon_view,
GtkMovementStep step,
gint count);
static void gtk_icon_view_move_cursor_up_down (GtkIconView *icon_view,
gint count);
static void gtk_icon_view_move_cursor_page_up_down (GtkIconView *icon_view,
gint count);
static void gtk_icon_view_move_cursor_left_right (GtkIconView *icon_view,
gint count);
static void gtk_icon_view_move_cursor_start_end (GtkIconView *icon_view,
gint count);
static void gtk_icon_view_scroll_to_item (GtkIconView *icon_view,
GtkIconViewItem *item);
static gboolean gtk_icon_view_select_all_between (GtkIconView *icon_view,
GtkIconViewItem *anchor,
GtkIconViewItem *cursor);
static void gtk_icon_view_ensure_cell_area (GtkIconView *icon_view,
GtkCellArea *cell_area);
static GtkCellArea *gtk_icon_view_cell_layout_get_area (GtkCellLayout *layout);
static void gtk_icon_view_item_selected_changed (GtkIconView *icon_view,
GtkIconViewItem *item);
static void gtk_icon_view_add_editable (GtkCellArea *area,
GtkCellRenderer *renderer,
GtkCellEditable *editable,
GdkRectangle *cell_area,
const gchar *path,
GtkIconView *icon_view);
static void gtk_icon_view_remove_editable (GtkCellArea *area,
GtkCellRenderer *renderer,
GtkCellEditable *editable,
GtkIconView *icon_view);
static void update_text_cell (GtkIconView *icon_view);
static void update_pixbuf_cell (GtkIconView *icon_view);
/* Source side drag signals */
static void gtk_icon_view_drag_begin (GtkWidget *widget,
GdkDragContext *context);
static void gtk_icon_view_drag_end (GtkWidget *widget,
GdkDragContext *context);
static void gtk_icon_view_drag_data_get (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint time);
static void gtk_icon_view_drag_data_delete (GtkWidget *widget,
GdkDragContext *context);
/* Target side drag signals */
static void gtk_icon_view_drag_leave (GtkWidget *widget,
GdkDragContext *context,
guint time);
static gboolean gtk_icon_view_drag_motion (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time);
static gboolean gtk_icon_view_drag_drop (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time);
static void gtk_icon_view_drag_data_received (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint time);
static gboolean gtk_icon_view_maybe_begin_drag (GtkIconView *icon_view,
double x,
double y,
GdkDevice *device);
static void remove_scroll_timeout (GtkIconView *icon_view);
/* GtkBuildable */
static GtkBuildableIface *parent_buildable_iface;
static void gtk_icon_view_buildable_init (GtkBuildableIface *iface);
static gboolean gtk_icon_view_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GMarkupParser *parser,
gpointer *data);
static void gtk_icon_view_buildable_custom_tag_end (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer *data);
static guint icon_view_signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE_WITH_CODE (GtkIconView, gtk_icon_view, GTK_TYPE_CONTAINER,
G_ADD_PRIVATE (GtkIconView)
G_IMPLEMENT_INTERFACE (GTK_TYPE_CELL_LAYOUT,
gtk_icon_view_cell_layout_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
gtk_icon_view_buildable_init)
G_IMPLEMENT_INTERFACE (GTK_TYPE_SCROLLABLE, NULL))
static void
gtk_icon_view_class_init (GtkIconViewClass *klass)
{
GObjectClass *gobject_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
GtkBindingSet *binding_set;
binding_set = gtk_binding_set_by_class (klass);
gobject_class = (GObjectClass *) klass;
widget_class = (GtkWidgetClass *) klass;
container_class = (GtkContainerClass *) klass;
gobject_class->constructed = gtk_icon_view_constructed;
gobject_class->dispose = gtk_icon_view_dispose;
gobject_class->set_property = gtk_icon_view_set_property;
gobject_class->get_property = gtk_icon_view_get_property;
widget_class->destroy = gtk_icon_view_destroy;
widget_class->get_request_mode = gtk_icon_view_get_request_mode;
widget_class->measure = gtk_icon_view_measure;
widget_class->size_allocate = gtk_icon_view_size_allocate;
widget_class->snapshot = gtk_icon_view_snapshot;
widget_class->drag_begin = gtk_icon_view_drag_begin;
widget_class->drag_end = gtk_icon_view_drag_end;
widget_class->drag_data_get = gtk_icon_view_drag_data_get;
widget_class->drag_data_delete = gtk_icon_view_drag_data_delete;
widget_class->drag_leave = gtk_icon_view_drag_leave;
widget_class->drag_motion = gtk_icon_view_drag_motion;
widget_class->drag_drop = gtk_icon_view_drag_drop;
widget_class->drag_data_received = gtk_icon_view_drag_data_received;
container_class->remove = gtk_icon_view_remove;
container_class->forall = gtk_icon_view_forall;
klass->select_all = gtk_icon_view_real_select_all;
klass->unselect_all = gtk_icon_view_real_unselect_all;
klass->select_cursor_item = gtk_icon_view_real_select_cursor_item;
klass->toggle_cursor_item = gtk_icon_view_real_toggle_cursor_item;
klass->activate_cursor_item = gtk_icon_view_real_activate_cursor_item;
klass->move_cursor = gtk_icon_view_real_move_cursor;
/* Properties */
/**
* GtkIconView:selection-mode:
*
* The ::selection-mode property specifies the selection mode of
* icon view. If the mode is #GTK_SELECTION_MULTIPLE, rubberband selection
* is enabled, for the other modes, only keyboard selection is possible.
*/
g_object_class_install_property (gobject_class,
PROP_SELECTION_MODE,
g_param_spec_enum ("selection-mode",
P_("Selection mode"),
P_("The selection mode"),
GTK_TYPE_SELECTION_MODE,
GTK_SELECTION_SINGLE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkIconView:pixbuf-column:
*
* The ::pixbuf-column property contains the number of the model column
* containing the pixbufs which are displayed. The pixbuf column must be
* of type #GDK_TYPE_PIXBUF. Setting this property to -1 turns off the
* display of pixbufs.
*/
g_object_class_install_property (gobject_class,
PROP_PIXBUF_COLUMN,
g_param_spec_int ("pixbuf-column",
P_("Pixbuf column"),
P_("Model column used to retrieve the icon pixbuf from"),
-1, G_MAXINT, -1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkIconView:text-column:
*
* The ::text-column property contains the number of the model column
* containing the texts which are displayed. The text column must be
* of type #G_TYPE_STRING. If this property and the :markup-column
* property are both set to -1, no texts are displayed.
*/
g_object_class_install_property (gobject_class,
PROP_TEXT_COLUMN,
g_param_spec_int ("text-column",
P_("Text column"),
P_("Model column used to retrieve the text from"),
-1, G_MAXINT, -1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkIconView:markup-column:
*
* The ::markup-column property contains the number of the model column
* containing markup information to be displayed. The markup column must be
* of type #G_TYPE_STRING. If this property and the :text-column property
* are both set to column numbers, it overrides the text column.
* If both are set to -1, no texts are displayed.
*/
g_object_class_install_property (gobject_class,
PROP_MARKUP_COLUMN,
g_param_spec_int ("markup-column",
P_("Markup column"),
P_("Model column used to retrieve the text if using Pango markup"),
-1, G_MAXINT, -1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (gobject_class,
PROP_MODEL,
g_param_spec_object ("model",
P_("Icon View Model"),
P_("The model for the icon view"),
GTK_TYPE_TREE_MODEL,
GTK_PARAM_READWRITE));
/**
* GtkIconView:columns:
*
* The columns property contains the number of the columns in which the
* items should be displayed. If it is -1, the number of columns will
* be chosen automatically to fill the available area.
*/
g_object_class_install_property (gobject_class,
PROP_COLUMNS,
g_param_spec_int ("columns",
P_("Number of columns"),
P_("Number of columns to display"),
-1, G_MAXINT, -1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkIconView:item-width:
*
* The item-width property specifies the width to use for each item.
* If it is set to -1, the icon view will automatically determine a
* suitable item size.
*/
g_object_class_install_property (gobject_class,
PROP_ITEM_WIDTH,
g_param_spec_int ("item-width",
P_("Width for each item"),
P_("The width used for each item"),
-1, G_MAXINT, -1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkIconView:spacing:
*
* The spacing property specifies the space which is inserted between
* the cells (i.e. the icon and the text) of an item.
*/
g_object_class_install_property (gobject_class,
PROP_SPACING,
g_param_spec_int ("spacing",
P_("Spacing"),
P_("Space which is inserted between cells of an item"),
0, G_MAXINT, 0,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkIconView:row-spacing:
*
* The row-spacing property specifies the space which is inserted between
* the rows of the icon view.
*/
g_object_class_install_property (gobject_class,
PROP_ROW_SPACING,
g_param_spec_int ("row-spacing",
P_("Row Spacing"),
P_("Space which is inserted between grid rows"),
0, G_MAXINT, 6,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkIconView:column-spacing:
*
* The column-spacing property specifies the space which is inserted between
* the columns of the icon view.
*/
g_object_class_install_property (gobject_class,
PROP_COLUMN_SPACING,
g_param_spec_int ("column-spacing",
P_("Column Spacing"),
P_("Space which is inserted between grid columns"),
0, G_MAXINT, 6,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkIconView:margin:
*
* The margin property specifies the space which is inserted
* at the edges of the icon view.
*/
g_object_class_install_property (gobject_class,
PROP_MARGIN,
g_param_spec_int ("margin",
P_("Margin"),
P_("Space which is inserted at the edges of the icon view"),
0, G_MAXINT, 6,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkIconView:item-orientation:
*
* The item-orientation property specifies how the cells (i.e. the icon and
* the text) of the item are positioned relative to each other.
*/
g_object_class_install_property (gobject_class,
PROP_ITEM_ORIENTATION,
g_param_spec_enum ("item-orientation",
P_("Item Orientation"),
P_("How the text and icon of each item are positioned relative to each other"),
GTK_TYPE_ORIENTATION,
GTK_ORIENTATION_VERTICAL,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkIconView:reorderable:
*
* The reorderable property specifies if the items can be reordered
* by DND.
*/
g_object_class_install_property (gobject_class,
PROP_REORDERABLE,
g_param_spec_boolean ("reorderable",
P_("Reorderable"),
P_("View is reorderable"),
FALSE,
G_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
g_object_class_install_property (gobject_class,
PROP_TOOLTIP_COLUMN,
g_param_spec_int ("tooltip-column",
P_("Tooltip Column"),
P_("The column in the model containing the tooltip texts for the items"),
-1,
G_MAXINT,
-1,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkIconView:item-padding:
*
* The item-padding property specifies the padding around each
* of the icon view's item.
*/
g_object_class_install_property (gobject_class,
PROP_ITEM_PADDING,
g_param_spec_int ("item-padding",
P_("Item Padding"),
P_("Padding around icon view items"),
0, G_MAXINT, 6,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/**
* GtkIconView:cell-area:
*
* The #GtkCellArea used to layout cell renderers for this view.
*
* If no area is specified when creating the icon view with gtk_icon_view_new_with_area()
* a #GtkCellAreaBox will be used.
*/
g_object_class_install_property (gobject_class,
PROP_CELL_AREA,
g_param_spec_object ("cell-area",
P_("Cell Area"),
P_("The GtkCellArea used to layout cells"),
GTK_TYPE_CELL_AREA,
GTK_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
/**
* GtkIconView:activate-on-single-click:
*
* The activate-on-single-click property specifies whether the "item-activated" signal
* will be emitted after a single click.
*/
g_object_class_install_property (gobject_class,
PROP_ACTIVATE_ON_SINGLE_CLICK,
g_param_spec_boolean ("activate-on-single-click",
P_("Activate on Single Click"),
P_("Activate row on a single click"),
FALSE,
GTK_PARAM_READWRITE|G_PARAM_EXPLICIT_NOTIFY));
/* Scrollable interface properties */
g_object_class_override_property (gobject_class, PROP_HADJUSTMENT, "hadjustment");
g_object_class_override_property (gobject_class, PROP_VADJUSTMENT, "vadjustment");
g_object_class_override_property (gobject_class, PROP_HSCROLL_POLICY, "hscroll-policy");
g_object_class_override_property (gobject_class, PROP_VSCROLL_POLICY, "vscroll-policy");
/* Signals */
/**
* GtkIconView::item-activated:
* @iconview: the object on which the signal is emitted
* @path: the #GtkTreePath for the activated item
*
* The ::item-activated signal is emitted when the method
* gtk_icon_view_item_activated() is called, when the user double
* clicks an item with the "activate-on-single-click" property set
* to %FALSE, or when the user single clicks an item when the
* "activate-on-single-click" property set to %TRUE. It is also
* emitted when a non-editable item is selected and one of the keys:
* Space, Return or Enter is pressed.
*/
icon_view_signals[ITEM_ACTIVATED] =
g_signal_new (I_("item-activated"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GtkIconViewClass, item_activated),
NULL, NULL,
g_cclosure_marshal_VOID__BOXED,
G_TYPE_NONE, 1,
GTK_TYPE_TREE_PATH);
/**
* GtkIconView::selection-changed:
* @iconview: the object on which the signal is emitted
*
* The ::selection-changed signal is emitted when the selection
* (i.e. the set of selected items) changes.
*/
icon_view_signals[SELECTION_CHANGED] =
g_signal_new (I_("selection-changed"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkIconViewClass, selection_changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkIconView::select-all:
* @iconview: the object on which the signal is emitted
*
* A [keybinding signal][GtkBindingSignal]
* which gets emitted when the user selects all items.
*
* Applications should not connect to it, but may emit it with
* g_signal_emit_by_name() if they need to control selection
* programmatically.
*
* The default binding for this signal is Ctrl-a.
*/
icon_view_signals[SELECT_ALL] =
g_signal_new (I_("select-all"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkIconViewClass, select_all),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkIconView::unselect-all:
* @iconview: the object on which the signal is emitted
*
* A [keybinding signal][GtkBindingSignal]
* which gets emitted when the user unselects all items.
*
* Applications should not connect to it, but may emit it with
* g_signal_emit_by_name() if they need to control selection
* programmatically.
*
* The default binding for this signal is Ctrl-Shift-a.
*/
icon_view_signals[UNSELECT_ALL] =
g_signal_new (I_("unselect-all"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkIconViewClass, unselect_all),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkIconView::select-cursor-item:
* @iconview: the object on which the signal is emitted
*
* A [keybinding signal][GtkBindingSignal]
* which gets emitted when the user selects the item that is currently
* focused.
*
* Applications should not connect to it, but may emit it with
* g_signal_emit_by_name() if they need to control selection
* programmatically.
*
* There is no default binding for this signal.
*/
icon_view_signals[SELECT_CURSOR_ITEM] =
g_signal_new (I_("select-cursor-item"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkIconViewClass, select_cursor_item),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkIconView::toggle-cursor-item:
* @iconview: the object on which the signal is emitted
*
* A [keybinding signal][GtkBindingSignal]
* which gets emitted when the user toggles whether the currently
* focused item is selected or not. The exact effect of this
* depend on the selection mode.
*
* Applications should not connect to it, but may emit it with
* g_signal_emit_by_name() if they need to control selection
* programmatically.
*
* There is no default binding for this signal is Ctrl-Space.
*/
icon_view_signals[TOGGLE_CURSOR_ITEM] =
g_signal_new (I_("toggle-cursor-item"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkIconViewClass, toggle_cursor_item),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GtkIconView::activate-cursor-item:
* @iconview: the object on which the signal is emitted
*
* A [keybinding signal][GtkBindingSignal]
* which gets emitted when the user activates the currently
* focused item.
*
* Applications should not connect to it, but may emit it with
* g_signal_emit_by_name() if they need to control activation
* programmatically.
*
* The default bindings for this signal are Space, Return and Enter.
*/
icon_view_signals[ACTIVATE_CURSOR_ITEM] =
g_signal_new (I_("activate-cursor-item"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkIconViewClass, activate_cursor_item),
NULL, NULL,
_gtk_marshal_BOOLEAN__VOID,
G_TYPE_BOOLEAN, 0);
/**
* GtkIconView::move-cursor:
* @iconview: the object which received the signal
* @step: the granularity of the move, as a #GtkMovementStep
* @count: the number of @step units to move
*
* The ::move-cursor signal is a
* [keybinding signal][GtkBindingSignal]
* which gets emitted when the user initiates a cursor movement.
*
* Applications should not connect to it, but may emit it with
* g_signal_emit_by_name() if they need to control the cursor
* programmatically.
*
* The default bindings for this signal include
* - Arrow keys which move by individual steps
* - Home/End keys which move to the first/last item
* - PageUp/PageDown which move by "pages"
* All of these will extend the selection when combined with
* the Shift modifier.
*/
icon_view_signals[MOVE_CURSOR] =
g_signal_new (I_("move-cursor"),
G_TYPE_FROM_CLASS (gobject_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkIconViewClass, move_cursor),
NULL, NULL,
_gtk_marshal_BOOLEAN__ENUM_INT,
G_TYPE_BOOLEAN, 2,
GTK_TYPE_MOVEMENT_STEP,
G_TYPE_INT);
/* Key bindings */
gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK,
"select-all", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
"unselect-all", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_CONTROL_MASK,
"toggle-cursor-item", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK,
"toggle-cursor-item", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0,
"activate-cursor-item", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0,
"activate-cursor-item", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0,
"activate-cursor-item", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0,
"activate-cursor-item", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0,
"activate-cursor-item", 0);
gtk_icon_view_add_move_binding (binding_set, GDK_KEY_Up, 0,
GTK_MOVEMENT_DISPLAY_LINES, -1);
gtk_icon_view_add_move_binding (binding_set, GDK_KEY_KP_Up, 0,
GTK_MOVEMENT_DISPLAY_LINES, -1);
gtk_icon_view_add_move_binding (binding_set, GDK_KEY_Down, 0,
GTK_MOVEMENT_DISPLAY_LINES, 1);
gtk_icon_view_add_move_binding (binding_set, GDK_KEY_KP_Down, 0,
GTK_MOVEMENT_DISPLAY_LINES, 1);
gtk_icon_view_add_move_binding (binding_set, GDK_KEY_p, GDK_CONTROL_MASK,
GTK_MOVEMENT_DISPLAY_LINES, -1);
gtk_icon_view_add_move_binding (binding_set, GDK_KEY_n, GDK_CONTROL_MASK,
GTK_MOVEMENT_DISPLAY_LINES, 1);
gtk_icon_view_add_move_binding (binding_set, GDK_KEY_Home, 0,
GTK_MOVEMENT_BUFFER_ENDS, -1);
gtk_icon_view_add_move_binding (binding_set, GDK_KEY_KP_Home, 0,
GTK_MOVEMENT_BUFFER_ENDS, -1);
gtk_icon_view_add_move_binding (binding_set, GDK_KEY_End, 0,
GTK_MOVEMENT_BUFFER_ENDS, 1);
gtk_icon_view_add_move_binding (binding_set, GDK_KEY_KP_End, 0,
GTK_MOVEMENT_BUFFER_ENDS, 1);
gtk_icon_view_add_move_binding (binding_set, GDK_KEY_Page_Up, 0,
GTK_MOVEMENT_PAGES, -1);
gtk_icon_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0,
GTK_MOVEMENT_PAGES, -1);
gtk_icon_view_add_move_binding (binding_set, GDK_KEY_Page_Down, 0,
GTK_MOVEMENT_PAGES, 1);
gtk_icon_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0,
GTK_MOVEMENT_PAGES, 1);
gtk_icon_view_add_move_binding (binding_set, GDK_KEY_Right, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, 1);
gtk_icon_view_add_move_binding (binding_set, GDK_KEY_Left, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, -1);
gtk_icon_view_add_move_binding (binding_set, GDK_KEY_KP_Right, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, 1);
gtk_icon_view_add_move_binding (binding_set, GDK_KEY_KP_Left, 0,
GTK_MOVEMENT_VISUAL_POSITIONS, -1);
gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_ICON_VIEW_ACCESSIBLE);
gtk_widget_class_set_css_name (widget_class, I_("iconview"));
}
static void
gtk_icon_view_buildable_init (GtkBuildableIface *iface)
{
parent_buildable_iface = g_type_interface_peek_parent (iface);
iface->add_child = _gtk_cell_layout_buildable_add_child;
iface->custom_tag_start = gtk_icon_view_buildable_custom_tag_start;
iface->custom_tag_end = gtk_icon_view_buildable_custom_tag_end;
}
static void
gtk_icon_view_cell_layout_init (GtkCellLayoutIface *iface)
{
iface->get_area = gtk_icon_view_cell_layout_get_area;
}
static void
gtk_icon_view_init (GtkIconView *icon_view)
{
icon_view->priv = gtk_icon_view_get_instance_private (icon_view);
icon_view->priv->width = 0;
icon_view->priv->height = 0;
icon_view->priv->selection_mode = GTK_SELECTION_SINGLE;
icon_view->priv->pressed_button = -1;
icon_view->priv->press_start_x = -1;
icon_view->priv->press_start_y = -1;
icon_view->priv->text_column = -1;
icon_view->priv->markup_column = -1;
icon_view->priv->pixbuf_column = -1;
icon_view->priv->text_cell = NULL;
icon_view->priv->pixbuf_cell = NULL;
icon_view->priv->tooltip_column = -1;
icon_view->priv->mouse_x = -1;
icon_view->priv->mouse_y = -1;
gtk_widget_set_has_surface (GTK_WIDGET (icon_view), FALSE);
gtk_widget_set_can_focus (GTK_WIDGET (icon_view), TRUE);
icon_view->priv->item_orientation = GTK_ORIENTATION_VERTICAL;
icon_view->priv->columns = -1;
icon_view->priv->item_width = -1;
icon_view->priv->spacing = 0;
icon_view->priv->row_spacing = 6;
icon_view->priv->column_spacing = 6;
icon_view->priv->margin = 6;
icon_view->priv->item_padding = 6;
icon_view->priv->activate_on_single_click = FALSE;
icon_view->priv->draw_focus = TRUE;
icon_view->priv->row_contexts =
g_ptr_array_new_with_free_func ((GDestroyNotify)g_object_unref);
gtk_style_context_add_class (gtk_widget_get_style_context (GTK_WIDGET (icon_view)),
GTK_STYLE_CLASS_VIEW);
icon_view->priv->press_gesture = gtk_gesture_multi_press_new (GTK_WIDGET (icon_view));
g_signal_connect (icon_view->priv->press_gesture, "pressed", G_CALLBACK (gtk_icon_view_button_press),
icon_view);
g_signal_connect (icon_view->priv->press_gesture, "released", G_CALLBACK (gtk_icon_view_button_release),
icon_view);
icon_view->priv->motion_controller = gtk_event_controller_motion_new (GTK_WIDGET (icon_view));
g_signal_connect (icon_view->priv->motion_controller, "leave", G_CALLBACK (gtk_icon_view_leave),
icon_view);
g_signal_connect (icon_view->priv->motion_controller, "motion", G_CALLBACK (gtk_icon_view_motion),
icon_view);
icon_view->priv->key_controller = gtk_event_controller_key_new (GTK_WIDGET (icon_view));
g_signal_connect (icon_view->priv->key_controller, "key-pressed", G_CALLBACK (gtk_icon_view_key_pressed),
icon_view);
}
/* GObject methods */
static void
gtk_icon_view_constructed (GObject *object)
{
GtkIconView *icon_view = GTK_ICON_VIEW (object);
G_OBJECT_CLASS (gtk_icon_view_parent_class)->constructed (object);
gtk_icon_view_ensure_cell_area (icon_view, NULL);
}
static void
gtk_icon_view_dispose (GObject *object)
{
GtkIconView *icon_view;
GtkIconViewPrivate *priv;
icon_view = GTK_ICON_VIEW (object);
priv = icon_view->priv;
if (priv->cell_area_context)
{
g_object_unref (priv->cell_area_context);
priv->cell_area_context = NULL;
}
if (priv->row_contexts)
{
g_ptr_array_free (priv->row_contexts, TRUE);
priv->row_contexts = NULL;
}
if (priv->cell_area)
{
gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
g_signal_handler_disconnect (priv->cell_area, priv->add_editable_id);
g_signal_handler_disconnect (priv->cell_area, priv->remove_editable_id);
priv->add_editable_id = 0;
priv->remove_editable_id = 0;
g_object_unref (priv->cell_area);
priv->cell_area = NULL;
}
g_clear_object (&priv->press_gesture);
g_clear_object (&priv->motion_controller);
g_clear_object (&priv->key_controller);
G_OBJECT_CLASS (gtk_icon_view_parent_class)->dispose (object);
}
static void
gtk_icon_view_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkIconView *icon_view;
GtkCellArea *area;
icon_view = GTK_ICON_VIEW (object);
switch (prop_id)
{
case PROP_SELECTION_MODE:
gtk_icon_view_set_selection_mode (icon_view, g_value_get_enum (value));
break;
case PROP_PIXBUF_COLUMN:
gtk_icon_view_set_pixbuf_column (icon_view, g_value_get_int (value));
break;
case PROP_TEXT_COLUMN:
gtk_icon_view_set_text_column (icon_view, g_value_get_int (value));
break;
case PROP_MARKUP_COLUMN:
gtk_icon_view_set_markup_column (icon_view, g_value_get_int (value));
break;
case PROP_MODEL:
gtk_icon_view_set_model (icon_view, g_value_get_object (value));
break;
case PROP_ITEM_ORIENTATION:
gtk_icon_view_set_item_orientation (icon_view, g_value_get_enum (value));
break;
case PROP_COLUMNS:
gtk_icon_view_set_columns (icon_view, g_value_get_int (value));
break;
case PROP_ITEM_WIDTH:
gtk_icon_view_set_item_width (icon_view, g_value_get_int (value));
break;
case PROP_SPACING:
gtk_icon_view_set_spacing (icon_view, g_value_get_int (value));
break;
case PROP_ROW_SPACING:
gtk_icon_view_set_row_spacing (icon_view, g_value_get_int (value));
break;
case PROP_COLUMN_SPACING:
gtk_icon_view_set_column_spacing (icon_view, g_value_get_int (value));
break;
case PROP_MARGIN:
gtk_icon_view_set_margin (icon_view, g_value_get_int (value));
break;
case PROP_REORDERABLE:
gtk_icon_view_set_reorderable (icon_view, g_value_get_boolean (value));
break;
case PROP_TOOLTIP_COLUMN:
gtk_icon_view_set_tooltip_column (icon_view, g_value_get_int (value));
break;
case PROP_ITEM_PADDING:
gtk_icon_view_set_item_padding (icon_view, g_value_get_int (value));
break;
case PROP_ACTIVATE_ON_SINGLE_CLICK:
gtk_icon_view_set_activate_on_single_click (icon_view, g_value_get_boolean (value));
break;
case PROP_CELL_AREA:
/* Construct-only, can only be assigned once */
area = g_value_get_object (value);
if (area)
{
if (icon_view->priv->cell_area != NULL)
{
g_warning ("cell-area has already been set, ignoring construct property");
g_object_ref_sink (area);
g_object_unref (area);
}
else
gtk_icon_view_ensure_cell_area (icon_view, area);
}
break;
case PROP_HADJUSTMENT:
gtk_icon_view_set_hadjustment (icon_view, g_value_get_object (value));
break;
case PROP_VADJUSTMENT:
gtk_icon_view_set_vadjustment (icon_view, g_value_get_object (value));
break;
case PROP_HSCROLL_POLICY:
if (icon_view->priv->hscroll_policy != g_value_get_enum (value))
{
icon_view->priv->hscroll_policy = g_value_get_enum (value);
gtk_widget_queue_resize (GTK_WIDGET (icon_view));
g_object_notify_by_pspec (object, pspec);
}
break;
case PROP_VSCROLL_POLICY:
if (icon_view->priv->vscroll_policy != g_value_get_enum (value))
{
icon_view->priv->vscroll_policy = g_value_get_enum (value);
gtk_widget_queue_resize (GTK_WIDGET (icon_view));
g_object_notify_by_pspec (object, pspec);
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_icon_view_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkIconView *icon_view;
icon_view = GTK_ICON_VIEW (object);
switch (prop_id)
{
case PROP_SELECTION_MODE:
g_value_set_enum (value, icon_view->priv->selection_mode);
break;
case PROP_PIXBUF_COLUMN:
g_value_set_int (value, icon_view->priv->pixbuf_column);
break;
case PROP_TEXT_COLUMN:
g_value_set_int (value, icon_view->priv->text_column);
break;
case PROP_MARKUP_COLUMN:
g_value_set_int (value, icon_view->priv->markup_column);
break;
case PROP_MODEL:
g_value_set_object (value, icon_view->priv->model);
break;
case PROP_ITEM_ORIENTATION:
g_value_set_enum (value, icon_view->priv->item_orientation);
break;
case PROP_COLUMNS:
g_value_set_int (value, icon_view->priv->columns);
break;
case PROP_ITEM_WIDTH:
g_value_set_int (value, icon_view->priv->item_width);
break;
case PROP_SPACING:
g_value_set_int (value, icon_view->priv->spacing);
break;
case PROP_ROW_SPACING:
g_value_set_int (value, icon_view->priv->row_spacing);
break;
case PROP_COLUMN_SPACING:
g_value_set_int (value, icon_view->priv->column_spacing);
break;
case PROP_MARGIN:
g_value_set_int (value, icon_view->priv->margin);
break;
case PROP_REORDERABLE:
g_value_set_boolean (value, icon_view->priv->reorderable);
break;
case PROP_TOOLTIP_COLUMN:
g_value_set_int (value, icon_view->priv->tooltip_column);
break;
case PROP_ITEM_PADDING:
g_value_set_int (value, icon_view->priv->item_padding);
break;
case PROP_ACTIVATE_ON_SINGLE_CLICK:
g_value_set_boolean (value, icon_view->priv->activate_on_single_click);
break;
case PROP_CELL_AREA:
g_value_set_object (value, icon_view->priv->cell_area);
break;
case PROP_HADJUSTMENT:
g_value_set_object (value, icon_view->priv->hadjustment);
break;
case PROP_VADJUSTMENT:
g_value_set_object (value, icon_view->priv->vadjustment);
break;
case PROP_HSCROLL_POLICY:
g_value_set_enum (value, icon_view->priv->hscroll_policy);
break;
case PROP_VSCROLL_POLICY:
g_value_set_enum (value, icon_view->priv->vscroll_policy);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* GtkWidget methods */
static void
gtk_icon_view_destroy (GtkWidget *widget)
{
GtkIconView *icon_view = GTK_ICON_VIEW (widget);
gtk_icon_view_set_model (icon_view, NULL);
if (icon_view->priv->scroll_to_path != NULL)
{
gtk_tree_row_reference_free (icon_view->priv->scroll_to_path);
icon_view->priv->scroll_to_path = NULL;
}
remove_scroll_timeout (icon_view);
if (icon_view->priv->hadjustment != NULL)
{
g_object_unref (icon_view->priv->hadjustment);
icon_view->priv->hadjustment = NULL;
}
if (icon_view->priv->vadjustment != NULL)
{
g_object_unref (icon_view->priv->vadjustment);
icon_view->priv->vadjustment = NULL;
}
GTK_WIDGET_CLASS (gtk_icon_view_parent_class)->destroy (widget);
}
static gint
gtk_icon_view_get_n_items (GtkIconView *icon_view)
{
GtkIconViewPrivate *priv = icon_view->priv;
if (priv->model == NULL)
return 0;
return gtk_tree_model_iter_n_children (priv->model, NULL);
}
static void
adjust_wrap_width (GtkIconView *icon_view)
{
if (icon_view->priv->text_cell)
{
gint pixbuf_width, wrap_width;
if (icon_view->priv->items && icon_view->priv->pixbuf_cell)
{
gtk_cell_renderer_get_preferred_width (icon_view->priv->pixbuf_cell,
GTK_WIDGET (icon_view),
&pixbuf_width, NULL);
}
else
{
pixbuf_width = 0;
}
if (icon_view->priv->item_width >= 0)
{
if (icon_view->priv->item_orientation == GTK_ORIENTATION_VERTICAL)
{
wrap_width = icon_view->priv->item_width;
}
else
{
wrap_width = icon_view->priv->item_width - pixbuf_width;
}
wrap_width -= 2 * icon_view->priv->item_padding * 2;
}
else
{
wrap_width = MAX (pixbuf_width * 2, 50);
}
if (icon_view->priv->items && icon_view->priv->pixbuf_cell)
{
/* Here we go with the same old guess, try the icon size and set double
* the size of the first icon found in the list, naive but works much
* of the time */
wrap_width = MAX (wrap_width * 2, 50);
}
g_object_set (icon_view->priv->text_cell, "wrap-width", wrap_width, NULL);
g_object_set (icon_view->priv->text_cell, "width", wrap_width, NULL);
}
}
/* General notes about layout
*
* The icon view is layouted like this:
*
* +----------+ s +----------+
* | padding | p | padding |
* | +------+ | a | +------+ |
* | | cell | | c | | cell | |
* | +------+ | i | +------+ |
* | | n | |
* +----------+ g +----------+
*
* In size request and allocation code, there are 3 sizes that are used:
* * cell size
* This is the size returned by gtk_cell_area_get_preferred_foo(). In places
* where code is interacting with the cell area and renderers this is useful.
* * padded size
* This is the cell size plus the item padding on each side.
* * spaced size
* This is the padded size plus the spacing. This is what’s used for most
* calculations because it can (ab)use the following formula:
* iconview_size = 2 * margin + n_items * spaced_size - spacing
* So when reading this code and fixing my bugs where I confuse these two, be
* aware of this distinction.
*/
static void
cell_area_get_preferred_size (GtkIconView *icon_view,
GtkCellAreaContext *context,
GtkOrientation orientation,
gint for_size,
gint *minimum,
gint *natural)
{
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
if (for_size > 0)
gtk_cell_area_get_preferred_width_for_height (icon_view->priv->cell_area,
context,
GTK_WIDGET (icon_view),
for_size,
minimum, natural);
else
gtk_cell_area_get_preferred_width (icon_view->priv->cell_area,
context,
GTK_WIDGET (icon_view),
minimum, natural);
}
else
{
if (for_size > 0)
gtk_cell_area_get_preferred_height_for_width (icon_view->priv->cell_area,
context,
GTK_WIDGET (icon_view),
for_size,
minimum, natural);
else
gtk_cell_area_get_preferred_height (icon_view->priv->cell_area,
context,
GTK_WIDGET (icon_view),
minimum, natural);
}
}
static gboolean
gtk_icon_view_is_empty (GtkIconView *icon_view)
{
return icon_view->priv->items == NULL;
}
static void
gtk_icon_view_get_preferred_item_size (GtkIconView *icon_view,
GtkOrientation orientation,
gint for_size,
gint *minimum,
gint *natural)
{
GtkIconViewPrivate *priv = icon_view->priv;
GtkCellAreaContext *context;
GList *items;
g_assert (!gtk_icon_view_is_empty (icon_view));
context = gtk_cell_area_create_context (priv->cell_area);
for_size -= 2 * priv->item_padding;
if (for_size > 0)
{
/* This is necessary for the context to work properly */
for (items = priv->items; items; items = items->next)
{
GtkIconViewItem *item = items->data;
_gtk_icon_view_set_cell_data (icon_view, item);
cell_area_get_preferred_size (icon_view, context, 1 - orientation, -1, NULL, NULL);
}
}
for (items = priv->items; items; items = items->next)
{
GtkIconViewItem *item = items->data;
_gtk_icon_view_set_cell_data (icon_view, item);
if (items == priv->items)
adjust_wrap_width (icon_view);
cell_area_get_preferred_size (icon_view, context, orientation, for_size, NULL, NULL);
}
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
if (for_size > 0)
gtk_cell_area_context_get_preferred_width_for_height (context,
for_size,
minimum, natural);
else
gtk_cell_area_context_get_preferred_width (context,
minimum, natural);
}
else
{
if (for_size > 0)
gtk_cell_area_context_get_preferred_height_for_width (context,
for_size,
minimum, natural);
else
gtk_cell_area_context_get_preferred_height (context,
minimum, natural);
}
if (orientation == GTK_ORIENTATION_HORIZONTAL && priv->item_width >= 0)
{
if (minimum)
*minimum = MAX (*minimum, priv->item_width);
if (natural)
*natural = *minimum;
}
if (minimum)
*minimum = MAX (1, *minimum + 2 * priv->item_padding);
if (natural)
*natural = MAX (1, *natural + 2 * priv->item_padding);
g_object_unref (context);
}
static void
gtk_icon_view_compute_n_items_for_size (GtkIconView *icon_view,
GtkOrientation orientation,
gint size,
gint *min_items,
gint *min_item_size,
gint *max_items,
gint *max_item_size)
{
GtkIconViewPrivate *priv = icon_view->priv;
int minimum, natural, spacing;
g_return_if_fail (min_item_size == NULL || min_items != NULL);
g_return_if_fail (max_item_size == NULL || max_items != NULL);
g_return_if_fail (!gtk_icon_view_is_empty (icon_view));
gtk_icon_view_get_preferred_item_size (icon_view, orientation, -1, &minimum, &natural);
if (orientation == GTK_ORIENTATION_HORIZONTAL)
spacing = priv->column_spacing;
else
spacing = priv->row_spacing;
size -= 2 * priv->margin;
size += spacing;
minimum += spacing;
natural += spacing;
if (priv->columns > 0)
{
if (orientation == GTK_ORIENTATION_HORIZONTAL)
{
if (min_items)
*min_items = priv->columns;
if (max_items)
*max_items = priv->columns;
}
else
{
int n_items = gtk_icon_view_get_n_items (icon_view);
if (min_items)
*min_items = (n_items + priv->columns - 1) / priv->columns;
if (max_items)
*max_items = (n_items + priv->columns - 1) / priv->columns;
}
}
else
{
if (max_items)
{
if (size <= minimum)
*max_items = 1;
else
*max_items = size / minimum;
}
if (min_items)
{
if (size <= natural)
*min_items = 1;
else
*min_items = size / natural;
}
}
if (min_item_size)
{
*min_item_size = size / *min_items;
*min_item_size = CLAMP (*min_item_size, minimum, natural);
*min_item_size -= spacing;
*min_item_size -= 2 * priv->item_padding;
}
if (max_item_size)
{
*max_item_size = size / *max_items;
*max_item_size = CLAMP (*max_item_size, minimum, natural);
*max_item_size -= spacing;
*max_item_size -= 2 * priv->item_padding;
}
}
static GtkSizeRequestMode
gtk_icon_view_get_request_mode (GtkWidget *widget)
{
return GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
}
static void
gtk_icon_view_measure (GtkWidget *widget,
GtkOrientation orientation,
int for_size,
int *minimum,
int *natural,
int *minimum_baseline,
int *natural_baseline)
{
GtkIconView *icon_view = GTK_ICON_VIEW (widget);
GtkIconViewPrivate *priv = icon_view->priv;
GtkOrientation other_orientation = orientation == GTK_ORIENTATION_HORIZONTAL ?
GTK_ORIENTATION_VERTICAL : GTK_ORIENTATION_HORIZONTAL;
int item_min, item_nat, items, item_size, n_items;
if (gtk_icon_view_is_empty (icon_view))
{
*minimum = *natural = 2 * priv->margin;
return;
}
n_items = gtk_icon_view_get_n_items (icon_view);
if (for_size < 0)
{
gtk_icon_view_get_preferred_item_size (icon_view, orientation, -1, &item_min, &item_nat);
if (priv->columns > 0)
{
int n_rows = (n_items + priv->columns - 1) / priv->columns;
*minimum = item_min * n_rows + priv->row_spacing * (n_rows - 1);
*natural = item_nat * n_rows + priv->row_spacing * (n_rows - 1);
}
else
{
*minimum = item_min;
*natural = item_nat * n_items + priv->row_spacing * (n_items - 1);
}
}
else
{
gtk_icon_view_compute_n_items_for_size (icon_view, orientation, for_size, NULL, NULL, &items, &item_size);
gtk_icon_view_get_preferred_item_size (icon_view, other_orientation, item_size, &item_min, &item_nat);
*minimum = (item_min + priv->row_spacing) * ((n_items + items - 1) / items) - priv->row_spacing;
*natural = (item_nat + priv->row_spacing) * ((n_items + items - 1) / items) - priv->row_spacing;
}
*minimum += 2 * priv->margin;
*natural += 2 * priv->margin;
}
static void
gtk_icon_view_allocate_children (GtkIconView *icon_view)
{
GList *list;
for (list = icon_view->priv->children; list; list = list->next)
{
GtkIconViewChild *child = list->data;
/* totally ignore our child's requisition */
gtk_widget_size_allocate (child->widget, &child->area, -1);
}
}
static void
gtk_icon_view_size_allocate (GtkWidget *widget,
const GtkAllocation *allocation,
int baseline)
{
GtkIconView *icon_view = GTK_ICON_VIEW (widget);
gtk_icon_view_layout (icon_view);
gtk_icon_view_allocate_children (icon_view);
/* Delay signal emission */
g_object_freeze_notify (G_OBJECT (icon_view->priv->hadjustment));
g_object_freeze_notify (G_OBJECT (icon_view->priv->vadjustment));
gtk_icon_view_set_hadjustment_values (icon_view);
gtk_icon_view_set_vadjustment_values (icon_view);
if (gtk_widget_get_realized (widget) &&
icon_view->priv->scroll_to_path)
{
GtkTreePath *path;
path = gtk_tree_row_reference_get_path (icon_view->priv->scroll_to_path);
gtk_tree_row_reference_free (icon_view->priv->scroll_to_path);
icon_view->priv->scroll_to_path = NULL;
gtk_icon_view_scroll_to_path (icon_view, path,
icon_view->priv->scroll_to_use_align,
icon_view->priv->scroll_to_row_align,
icon_view->priv->scroll_to_col_align);
gtk_tree_path_free (path);
}
/* Emit any pending signals now */
g_object_thaw_notify (G_OBJECT (icon_view->priv->hadjustment));
g_object_thaw_notify (G_OBJECT (icon_view->priv->vadjustment));
}
static void
gtk_icon_view_snapshot (GtkWidget *widget,
GtkSnapshot *snapshot)
{
GtkIconView *icon_view;
GList *icons;
GtkTreePath *path;
gint dest_index;
GtkIconViewDropPosition dest_pos;
GtkIconViewItem *dest_item = NULL;
GtkStyleContext *context;
int width, height;
icon_view = GTK_ICON_VIEW (widget);
context = gtk_widget_get_style_context (widget);
width = gtk_widget_get_width (widget);
height = gtk_widget_get_height (widget);
gtk_snapshot_push_clip (snapshot,
&GRAPHENE_RECT_INIT (
0, 0,
width, height
));
gtk_snapshot_offset (snapshot,
- gtk_adjustment_get_value (icon_view->priv->hadjustment),
- gtk_adjustment_get_value (icon_view->priv->vadjustment));
gtk_icon_view_get_drag_dest_item (icon_view, &path, &dest_pos);
if (path)
{
dest_index = gtk_tree_path_get_indices (path)[0];
gtk_tree_path_free (path);
}
else
dest_index = -1;
for (icons = icon_view->priv->items; icons; icons = icons->next)
{
GtkIconViewItem *item = icons->data;
graphene_rect_t area;
graphene_rect_init (&area,
item->cell_area.x - icon_view->priv->item_padding,
item->cell_area.y - icon_view->priv->item_padding,
item->cell_area.width + icon_view->priv->item_padding * 2,
item->cell_area.height + icon_view->priv->item_padding * 2);
if (gdk_rectangle_intersect (&item->cell_area, &(GdkRectangle) { 0, 0, width, height }, NULL))
{
gtk_icon_view_snapshot_item (icon_view, snapshot, item,
item->cell_area.x, item->cell_area.y,
icon_view->priv->draw_focus);
if (dest_index == item->index)
dest_item = item;
}
}
if (dest_item &&
dest_pos != GTK_ICON_VIEW_NO_DROP)
{
GdkRectangle rect = { 0 };
switch (dest_pos)
{
case GTK_ICON_VIEW_DROP_INTO:
rect = dest_item->cell_area;
break;
case GTK_ICON_VIEW_DROP_ABOVE:
rect.x = dest_item->cell_area.x;
rect.y = dest_item->cell_area.y - 1;
rect.width = dest_item->cell_area.width;
rect.height = 2;
break;
case GTK_ICON_VIEW_DROP_LEFT:
rect.x = dest_item->cell_area.x - 1;
rect.y = dest_item->cell_area.y;
rect.width = 2;
rect.height = dest_item->cell_area.height;
break;
case GTK_ICON_VIEW_DROP_BELOW:
rect.x = dest_item->cell_area.x;
rect.y = dest_item->cell_area.y + dest_item->cell_area.height - 1;
rect.width = dest_item->cell_area.width;
rect.height = 2;
break;
case GTK_ICON_VIEW_DROP_RIGHT:
rect.x = dest_item->cell_area.x + dest_item->cell_area.width - 1;
rect.y = dest_item->cell_area.y;
rect.width = 2;
rect.height = dest_item->cell_area.height;
case GTK_ICON_VIEW_NO_DROP:
default:
break;
}
gtk_snapshot_render_focus (snapshot, context,
rect.x, rect.y,
rect.width, rect.height);
}
if (icon_view->priv->doing_rubberband)
gtk_icon_view_snapshot_rubberband (icon_view, snapshot);
gtk_snapshot_pop (snapshot);
GTK_WIDGET_CLASS (gtk_icon_view_parent_class)->snapshot (widget, snapshot);
}
static gboolean
rubberband_scroll_timeout (gpointer data)
{
GtkIconView *icon_view = data;
gtk_adjustment_set_value (icon_view->priv->vadjustment,
gtk_adjustment_get_value (icon_view->priv->vadjustment) +
icon_view->priv->scroll_value_diff);
gtk_icon_view_update_rubberband (icon_view);
return TRUE;
}
static GtkIconViewItem *
_gtk_icon_view_get_item_at_widget_coords (GtkIconView *icon_view,
gint x,
gint y,
gboolean only_in_cell,
GtkCellRenderer **cell_at_pos)
{
x += gtk_adjustment_get_value (icon_view->priv->hadjustment);
y += gtk_adjustment_get_value (icon_view->priv->vadjustment);
return _gtk_icon_view_get_item_at_coords (icon_view, x, y,
only_in_cell, cell_at_pos);
}
static void
gtk_icon_view_motion (GtkEventController *controller,
double x,
double y,
gpointer user_data)
{
GtkIconView *icon_view;
gint abs_y;
GdkDevice *device;
icon_view = GTK_ICON_VIEW (user_data);
icon_view->priv->mouse_x = x;
icon_view->priv->mouse_y = y;
device = gtk_get_current_event_device (); /* FIXME: controller device */
gtk_icon_view_maybe_begin_drag (icon_view, x, y, device);
if (icon_view->priv->doing_rubberband)
{
int height;
gtk_icon_view_update_rubberband (icon_view);
abs_y = icon_view->priv->mouse_y - icon_view->priv->height *
(gtk_adjustment_get_value (icon_view->priv->vadjustment) /
(gtk_adjustment_get_upper (icon_view->priv->vadjustment) -
gtk_adjustment_get_lower (icon_view->priv->vadjustment)));
height = gtk_widget_get_height (GTK_WIDGET (icon_view));
if (abs_y < 0 || abs_y > height)
{
if (abs_y < 0)
icon_view->priv->scroll_value_diff = abs_y;
else
icon_view->priv->scroll_value_diff = abs_y - height;
icon_view->priv->event_last_x = icon_view->priv->mouse_x;
icon_view->priv->event_last_y = icon_view->priv->mouse_x;
if (icon_view->priv->scroll_timeout_id == 0) {
icon_view->priv->scroll_timeout_id = g_timeout_add (30, rubberband_scroll_timeout, icon_view);
g_source_set_name_by_id (icon_view->priv->scroll_timeout_id, "[gtk+] rubberband_scroll_timeout");
}
}
else
remove_scroll_timeout (icon_view);
}
else
{
GtkIconViewItem *item, *last_prelight_item;
GtkCellRenderer *cell = NULL;
last_prelight_item = icon_view->priv->last_prelight;
item = _gtk_icon_view_get_item_at_widget_coords (icon_view,
icon_view->priv->mouse_x,
icon_view->priv->mouse_y,
FALSE,
&cell);
if (item != last_prelight_item)
{
if (item != NULL)
{
gtk_icon_view_queue_draw_item (icon_view, item);
}
if (last_prelight_item != NULL)
{
gtk_icon_view_queue_draw_item (icon_view,
icon_view->priv->last_prelight);
}
icon_view->priv->last_prelight = item;
}
}
}
static void
gtk_icon_view_leave (GtkEventController *controller,
gpointer user_data)
{
GtkIconView *icon_view;
GtkIconViewPrivate *priv;
icon_view = GTK_ICON_VIEW (user_data);
priv = icon_view->priv;
if (priv->last_prelight)
{
gtk_icon_view_queue_draw_item (icon_view, priv->last_prelight);
priv->last_prelight = NULL;
}
}
static void
gtk_icon_view_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkIconView *icon_view;
GtkIconViewChild *child = NULL;
GList *tmp_list;
icon_view = GTK_ICON_VIEW (container);
tmp_list = icon_view->priv->children;
while (tmp_list)
{
child = tmp_list->data;
if (child->widget == widget)
{
gtk_widget_unparent (widget);
icon_view->priv->children = g_list_remove_link (icon_view->priv->children, tmp_list);
g_list_free_1 (tmp_list);
g_free (child);
return;
}
tmp_list = tmp_list->next;
}
}
static void
gtk_icon_view_forall (GtkContainer *container,
GtkCallback callback,
gpointer callback_data)
{
GtkIconView *icon_view;
GtkIconViewChild *child = NULL;
GList *tmp_list;
icon_view = GTK_ICON_VIEW (container);
tmp_list = icon_view->priv->children;
while (tmp_list)
{
child = tmp_list->data;
tmp_list = tmp_list->next;
(* callback) (child->widget, callback_data);
}
}
static void
gtk_icon_view_item_selected_changed (GtkIconView *icon_view,
GtkIconViewItem *item)
{
AtkObject *obj;
AtkObject *item_obj;
obj = gtk_widget_get_accessible (GTK_WIDGET (icon_view));
if (obj != NULL)
{
item_obj = atk_object_ref_accessible_child (obj, item->index);
if (item_obj != NULL)
{
atk_object_notify_state_change (item_obj, ATK_STATE_SELECTED, item->selected);
g_object_unref (item_obj);
}
}
}
static void
gtk_icon_view_add_editable (GtkCellArea *area,
GtkCellRenderer *renderer,
GtkCellEditable *editable,
GdkRectangle *cell_area,
const gchar *path,
GtkIconView *icon_view)
{
GtkIconViewChild *child;
GtkWidget *widget = GTK_WIDGET (editable);
child = g_new (GtkIconViewChild, 1);
child->widget = widget;
child->area.x = cell_area->x;
child->area.y = cell_area->y;
child->area.width = cell_area->width;
child->area.height = cell_area->height;
icon_view->priv->children = g_list_append (icon_view->priv->children, child);
gtk_widget_set_parent (widget, GTK_WIDGET (icon_view));
}
static void
gtk_icon_view_remove_editable (GtkCellArea *area,
GtkCellRenderer *renderer,
GtkCellEditable *editable,
GtkIconView *icon_view)
{
GtkTreePath *path;
if (gtk_widget_has_focus (GTK_WIDGET (editable)))
gtk_widget_grab_focus (GTK_WIDGET (icon_view));
gtk_container_remove (GTK_CONTAINER (icon_view),
GTK_WIDGET (editable));
path = gtk_tree_path_new_from_string (gtk_cell_area_get_current_path_string (area));
gtk_icon_view_queue_draw_path (icon_view, path);
gtk_tree_path_free (path);
}
/**
* gtk_icon_view_set_cursor:
* @icon_view: A #GtkIconView
* @path: A #GtkTreePath
* @cell: (allow-none): One of the cell renderers of @icon_view, or %NULL
* @start_editing: %TRUE if the specified cell should start being edited.
*
* Sets the current keyboard focus to be at @path, and selects it. This is
* useful when you want to focus the user’s attention on a particular item.
* If @cell is not %NULL, then focus is given to the cell specified by
* it. Additionally, if @start_editing is %TRUE, then editing should be
* started in the specified cell.
*
* This function is often followed by `gtk_widget_grab_focus
* (icon_view)` in order to give keyboard focus to the widget.
* Please note that editing can only happen when the widget is realized.
**/
void
gtk_icon_view_set_cursor (GtkIconView *icon_view,
GtkTreePath *path,
GtkCellRenderer *cell,
gboolean start_editing)
{
GtkIconViewItem *item = NULL;
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
g_return_if_fail (path != NULL);
g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
if (icon_view->priv->cell_area)
gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
if (gtk_tree_path_get_depth (path) == 1)
item = g_list_nth_data (icon_view->priv->items,
gtk_tree_path_get_indices(path)[0]);
if (!item)
return;
_gtk_icon_view_set_cursor_item (icon_view, item, cell);
gtk_icon_view_scroll_to_path (icon_view, path, FALSE, 0.0, 0.0);
if (start_editing &&
icon_view->priv->cell_area)
{
GtkCellAreaContext *context;
context = g_ptr_array_index (icon_view->priv->row_contexts, item->row);
_gtk_icon_view_set_cell_data (icon_view, item);
gtk_cell_area_activate (icon_view->priv->cell_area, context,
GTK_WIDGET (icon_view), &item->cell_area,
0 /* XXX flags */, TRUE);
}
}
/**
* gtk_icon_view_get_cursor:
* @icon_view: A #GtkIconView
* @path: (out) (allow-none) (transfer full): Return location for the current
* cursor path, or %NULL
* @cell: (out) (allow-none) (transfer none): Return location the current
* focus cell, or %NULL
*
* Fills in @path and @cell with the current cursor path and cell.
* If the cursor isn’t currently set, then *@path will be %NULL.
* If no cell currently has focus, then *@cell will be %NULL.
*
* The returned #GtkTreePath must be freed with gtk_tree_path_free().
*
* Returns: %TRUE if the cursor is set.
**/
gboolean
gtk_icon_view_get_cursor (GtkIconView *icon_view,
GtkTreePath **path,
GtkCellRenderer **cell)
{
GtkIconViewItem *item;
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
item = icon_view->priv->cursor_item;
if (path != NULL)
{
if (item != NULL)
*path = gtk_tree_path_new_from_indices (item->index, -1);
else
*path = NULL;
}
if (cell != NULL && item != NULL && icon_view->priv->cell_area != NULL)
*cell = gtk_cell_area_get_focus_cell (icon_view->priv->cell_area);
return (item != NULL);
}
static void
gtk_icon_view_button_press (GtkGestureMultiPress *gesture,
int n_press,
double x,
double y,
gpointer user_data)
{
GtkIconView *icon_view = user_data;
GtkWidget *widget = GTK_WIDGET (icon_view);
GtkIconViewItem *item;
gboolean dirty = FALSE;
GtkCellRenderer *cell = NULL, *cursor_cell = NULL;
int button = gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture));
GdkEventSequence *sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
const GdkEventButton *event = (const GdkEventButton *)gtk_gesture_get_last_event (GTK_GESTURE (gesture), sequence);
GdkModifierType state;
if (!gtk_widget_has_focus (widget))
gtk_widget_grab_focus (widget);
if (button == GDK_BUTTON_PRIMARY &&
gdk_event_get_state ((GdkEvent *) event, &state))
{
GdkModifierType extend_mod_mask;
GdkModifierType modify_mod_mask;
extend_mod_mask =
gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_EXTEND_SELECTION);
modify_mod_mask =
gtk_widget_get_modifier_mask (widget, GDK_MODIFIER_INTENT_MODIFY_SELECTION);
item = _gtk_icon_view_get_item_at_widget_coords (icon_view,
x, y,
FALSE,
&cell);
/*
* We consider only the cells' area as the item area if the
* item is not selected, but if it *is* selected, the complete
* selection rectangle is considered to be part of the item.
*/
if (item != NULL && (cell != NULL || item->selected))
{
if (cell != NULL)
{
if (gtk_cell_renderer_is_activatable (cell))
cursor_cell = cell;
}
gtk_icon_view_scroll_to_item (icon_view, item);
if (icon_view->priv->selection_mode == GTK_SELECTION_NONE)
{
_gtk_icon_view_set_cursor_item (icon_view, item, cursor_cell);
}
else if (icon_view->priv->selection_mode == GTK_SELECTION_MULTIPLE &&
(state & extend_mod_mask))
{
gtk_icon_view_unselect_all_internal (icon_view);
_gtk_icon_view_set_cursor_item (icon_view, item, cursor_cell);
if (!icon_view->priv->anchor_item)
icon_view->priv->anchor_item = item;
else
gtk_icon_view_select_all_between (icon_view,
icon_view->priv->anchor_item,
item);
dirty = TRUE;
}
else
{
if ((icon_view->priv->selection_mode == GTK_SELECTION_MULTIPLE ||
((icon_view->priv->selection_mode == GTK_SELECTION_SINGLE) && item->selected)) &&
(state & modify_mod_mask))
{
item->selected = !item->selected;
gtk_icon_view_queue_draw_item (icon_view, item);
dirty = TRUE;
}
else
{
gtk_icon_view_unselect_all_internal (icon_view);
item->selected = TRUE;
gtk_icon_view_queue_draw_item (icon_view, item);
dirty = TRUE;
}
_gtk_icon_view_set_cursor_item (icon_view, item, cursor_cell);
icon_view->priv->anchor_item = item;
}
/* Save press to possibly begin a drag */
if (icon_view->priv->pressed_button < 0)
{
icon_view->priv->pressed_button = button;
icon_view->priv->press_start_x = x;
icon_view->priv->press_start_y = y;
}
icon_view->priv->last_single_clicked = item;
/* cancel the current editing, if it exists */
gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
if (cell != NULL && gtk_cell_renderer_is_activatable (cell))
{
GtkCellAreaContext *context;
context = g_ptr_array_index (icon_view->priv->row_contexts, item->row);
_gtk_icon_view_set_cell_data (icon_view, item);
gtk_cell_area_activate (icon_view->priv->cell_area, context,
GTK_WIDGET (icon_view),
&item->cell_area, 0/* XXX flags */, FALSE);
}
}
else
{
if (icon_view->priv->selection_mode != GTK_SELECTION_BROWSE &&
!(state & modify_mod_mask))
{
dirty = gtk_icon_view_unselect_all_internal (icon_view);
}
if (icon_view->priv->selection_mode == GTK_SELECTION_MULTIPLE)
gtk_icon_view_start_rubberbanding (icon_view,
gtk_gesture_get_device (GTK_GESTURE (gesture)),
x, y);
}
/* don't draw keyboard focus around an clicked-on item */
icon_view->priv->draw_focus = FALSE;
}
if (!icon_view->priv->activate_on_single_click
&& button == GDK_BUTTON_PRIMARY
&& n_press == 2)
{
item = _gtk_icon_view_get_item_at_widget_coords (icon_view,
x, y,
FALSE,
NULL);
if (item && item == icon_view->priv->last_single_clicked)
{
GtkTreePath *path;
path = gtk_tree_path_new_from_indices (item->index, -1);
gtk_icon_view_item_activated (icon_view, path);
gtk_tree_path_free (path);
}
icon_view->priv->last_single_clicked = NULL;
icon_view->priv->pressed_button = -1;
}
if (dirty)
g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
}
static gboolean
button_event_modifies_selection (const GdkEventButton *event)
{
guint state;
gdk_event_get_state ((GdkEvent *) event, &state);
return (state & (GDK_CONTROL_MASK | GDK_SHIFT_MASK)) != 0;
}
static void
gtk_icon_view_button_release (GtkGestureMultiPress *gesture,
int n_press,
double x,
double y,
gpointer user_data)
{
GtkIconView *icon_view = user_data;
int button = gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture));
GdkEventSequence *sequence = gtk_gesture_single_get_current_sequence (GTK_GESTURE_SINGLE (gesture));
const GdkEventButton *event = (const GdkEventButton *)gtk_gesture_get_last_event (GTK_GESTURE (gesture), sequence);
if (icon_view->priv->pressed_button == button)
icon_view->priv->pressed_button = -1;
gtk_icon_view_stop_rubberbanding (icon_view);
remove_scroll_timeout (icon_view);
if (button == GDK_BUTTON_PRIMARY
&& icon_view->priv->activate_on_single_click
&& !button_event_modifies_selection (event)
&& icon_view->priv->last_single_clicked != NULL)
{
GtkIconViewItem *item;
item = _gtk_icon_view_get_item_at_widget_coords (icon_view,
x, y,
FALSE,
NULL);
if (item == icon_view->priv->last_single_clicked)
{
GtkTreePath *path;
path = gtk_tree_path_new_from_indices (item->index, -1);
gtk_icon_view_item_activated (icon_view, path);
gtk_tree_path_free (path);
}
icon_view->priv->last_single_clicked = NULL;
}
}
static gboolean
gtk_icon_view_key_pressed (GtkEventControllerKey *controller,
guint keyval,
guint keycode,
GdkModifierType state,
GtkWidget *widget)
{
GtkIconView *icon_view = GTK_ICON_VIEW (widget);
if (icon_view->priv->doing_rubberband)
{
if (keyval == GDK_KEY_Escape)
gtk_icon_view_stop_rubberbanding (icon_view);
return TRUE;
}
return FALSE;
}
static void
gtk_icon_view_update_rubberband (GtkIconView *icon_view)
{
gint x, y;
x = MAX (icon_view->priv->mouse_x, 0);
y = MAX (icon_view->priv->mouse_y, 0);
icon_view->priv->rubberband_x2 = x + gtk_adjustment_get_value (icon_view->priv->hadjustment);
icon_view->priv->rubberband_y2 = y + gtk_adjustment_get_value (icon_view->priv->vadjustment);
gtk_icon_view_update_rubberband_selection (icon_view);
gtk_widget_queue_draw (GTK_WIDGET (icon_view));
}
static void
gtk_icon_view_start_rubberbanding (GtkIconView *icon_view,
GdkDevice *device,
gint x,
gint y)
{
GtkIconViewPrivate *priv = icon_view->priv;
GList *items;
GtkCssNode *widget_node;
if (priv->rubberband_device)
return;
for (items = priv->items; items; items = items->next)
{
GtkIconViewItem *item = items->data;
item->selected_before_rubberbanding = item->selected;
}
priv->rubberband_x1 = x + gtk_adjustment_get_value (priv->hadjustment);
priv->rubberband_y1 = y + gtk_adjustment_get_value (priv->vadjustment);
priv->rubberband_x2 = priv->rubberband_x1;
priv->rubberband_y2 = priv->rubberband_y1;
priv->doing_rubberband = TRUE;
priv->rubberband_device = device;
widget_node = gtk_widget_get_css_node (GTK_WIDGET (icon_view));
priv->rubberband_node = gtk_css_node_new ();
gtk_css_node_set_name (priv->rubberband_node, I_("rubberband"));
gtk_css_node_set_parent (priv->rubberband_node, widget_node);
gtk_css_node_set_state (priv->rubberband_node, gtk_css_node_get_state (widget_node));
g_object_unref (priv->rubberband_node);
}
static void
gtk_icon_view_stop_rubberbanding (GtkIconView *icon_view)
{
GtkIconViewPrivate *priv = icon_view->priv;
if (!priv->doing_rubberband)
return;
priv->doing_rubberband = FALSE;
priv->rubberband_device = NULL;
gtk_css_node_set_parent (priv->rubberband_node, NULL);
priv->rubberband_node = NULL;
gtk_widget_queue_draw (GTK_WIDGET (icon_view));
}
static void
gtk_icon_view_update_rubberband_selection (GtkIconView *icon_view)
{
GList *items;
gint x, y, width, height;
gboolean dirty = FALSE;
x = MIN (icon_view->priv->rubberband_x1,
icon_view->priv->rubberband_x2);
y = MIN (icon_view->priv->rubberband_y1,
icon_view->priv->rubberband_y2);
width = ABS (icon_view->priv->rubberband_x1 -
icon_view->priv->rubberband_x2);
height = ABS (icon_view->priv->rubberband_y1 -
icon_view->priv->rubberband_y2);
for (items = icon_view->priv->items; items; items = items->next)
{
GtkIconViewItem *item = items->data;
gboolean is_in;
gboolean selected;
is_in = gtk_icon_view_item_hit_test (icon_view, item,
x, y, width, height);
selected = is_in ^ item->selected_before_rubberbanding;
if (item->selected != selected)
{
item->selected = selected;
dirty = TRUE;
gtk_icon_view_queue_draw_item (icon_view, item);
}
}
if (dirty)
g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
}
typedef struct {
GdkRectangle hit_rect;
gboolean hit;
} HitTestData;
static gboolean
hit_test (GtkCellRenderer *renderer,
const GdkRectangle *cell_area,
const GdkRectangle *cell_background,
HitTestData *data)
{
if (MIN (data->hit_rect.x + data->hit_rect.width, cell_area->x + cell_area->width) -
MAX (data->hit_rect.x, cell_area->x) > 0 &&
MIN (data->hit_rect.y + data->hit_rect.height, cell_area->y + cell_area->height) -
MAX (data->hit_rect.y, cell_area->y) > 0)
data->hit = TRUE;
return (data->hit != FALSE);
}
static gboolean
gtk_icon_view_item_hit_test (GtkIconView *icon_view,
GtkIconViewItem *item,
gint x,
gint y,
gint width,
gint height)
{
HitTestData data = { { x, y, width, height }, FALSE };
GtkCellAreaContext *context;
GdkRectangle *item_area = &item->cell_area;
if (MIN (x + width, item_area->x + item_area->width) - MAX (x, item_area->x) <= 0 ||
MIN (y + height, item_area->y + item_area->height) - MAX (y, item_area->y) <= 0)
return FALSE;
context = g_ptr_array_index (icon_view->priv->row_contexts, item->row);
_gtk_icon_view_set_cell_data (icon_view, item);
gtk_cell_area_foreach_alloc (icon_view->priv->cell_area, context,
GTK_WIDGET (icon_view),
item_area, item_area,
(GtkCellAllocCallback)hit_test, &data);
return data.hit;
}
static gboolean
gtk_icon_view_unselect_all_internal (GtkIconView *icon_view)
{
gboolean dirty = FALSE;
GList *items;
if (icon_view->priv->selection_mode == GTK_SELECTION_NONE)
return FALSE;
for (items = icon_view->priv->items; items; items = items->next)
{
GtkIconViewItem *item = items->data;
if (item->selected)
{
item->selected = FALSE;
dirty = TRUE;
gtk_icon_view_queue_draw_item (icon_view, item);
gtk_icon_view_item_selected_changed (icon_view, item);
}
}
return dirty;
}
/* GtkIconView signals */
static void
gtk_icon_view_real_select_all (GtkIconView *icon_view)
{
gtk_icon_view_select_all (icon_view);
}
static void
gtk_icon_view_real_unselect_all (GtkIconView *icon_view)
{
gtk_icon_view_unselect_all (icon_view);
}
static void
gtk_icon_view_real_select_cursor_item (GtkIconView *icon_view)
{
gtk_icon_view_unselect_all (icon_view);
if (icon_view->priv->cursor_item != NULL)
_gtk_icon_view_select_item (icon_view, icon_view->priv->cursor_item);
}
static gboolean
gtk_icon_view_real_activate_cursor_item (GtkIconView *icon_view)
{
GtkTreePath *path;
GtkCellAreaContext *context;
if (!icon_view->priv->cursor_item)
return FALSE;
context = g_ptr_array_index (icon_view->priv->row_contexts, icon_view->priv->cursor_item->row);
_gtk_icon_view_set_cell_data (icon_view, icon_view->priv->cursor_item);
gtk_cell_area_activate (icon_view->priv->cell_area, context,
GTK_WIDGET (icon_view),
&icon_view->priv->cursor_item->cell_area,
0 /* XXX flags */,
FALSE);
path = gtk_tree_path_new_from_indices (icon_view->priv->cursor_item->index, -1);
gtk_icon_view_item_activated (icon_view, path);
gtk_tree_path_free (path);
return TRUE;
}
static void
gtk_icon_view_real_toggle_cursor_item (GtkIconView *icon_view)
{
if (!icon_view->priv->cursor_item)
return;
switch (icon_view->priv->selection_mode)
{
case GTK_SELECTION_NONE:
default:
break;
case GTK_SELECTION_BROWSE:
_gtk_icon_view_select_item (icon_view, icon_view->priv->cursor_item);
break;
case GTK_SELECTION_SINGLE:
if (icon_view->priv->cursor_item->selected)
_gtk_icon_view_unselect_item (icon_view, icon_view->priv->cursor_item);
else
_gtk_icon_view_select_item (icon_view, icon_view->priv->cursor_item);
break;
case GTK_SELECTION_MULTIPLE:
icon_view->priv->cursor_item->selected = !icon_view->priv->cursor_item->selected;
g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
gtk_icon_view_item_selected_changed (icon_view, icon_view->priv->cursor_item);
gtk_icon_view_queue_draw_item (icon_view, icon_view->priv->cursor_item);
break;
}
}
static void
gtk_icon_view_set_hadjustment_values (GtkIconView *icon_view)
{
int width;
GtkAdjustment *adj = icon_view->priv->hadjustment;
gdouble old_page_size;
gdouble old_upper;
gdouble old_value;
gdouble new_value;
gdouble new_upper;
width = gtk_widget_get_width (GTK_WIDGET (icon_view));
old_value = gtk_adjustment_get_value (adj);
old_upper = gtk_adjustment_get_upper (adj);
old_page_size = gtk_adjustment_get_page_size (adj);
new_upper = MAX (width, icon_view->priv->width);
if (gtk_widget_get_direction (GTK_WIDGET (icon_view)) == GTK_TEXT_DIR_RTL)
{
/* Make sure no scrolling occurs for RTL locales also (if possible) */
/* Quick explanation:
* In LTR locales, leftmost portion of visible rectangle should stay
* fixed, which means left edge of scrollbar thumb should remain fixed
* and thus adjustment's value should stay the same.
*
* In RTL locales, we want to keep rightmost portion of visible
* rectangle fixed. This means right edge of thumb should remain fixed.
* In this case, upper - value - page_size should remain constant.
*/
new_value = (new_upper - width) -
(old_upper - old_value - old_page_size);
new_value = CLAMP (new_value, 0, new_upper - width);
}
else
new_value = CLAMP (old_value, 0, new_upper - width);
gtk_adjustment_configure (adj,
new_value,
0.0,
new_upper,
width * 0.1,
width * 0.9,
width);
}
static void
gtk_icon_view_set_vadjustment_values (GtkIconView *icon_view)
{
int height;
GtkAdjustment *adj = icon_view->priv->vadjustment;
height = gtk_widget_get_height (GTK_WIDGET (icon_view));
gtk_adjustment_configure (adj,
gtk_adjustment_get_value (adj),
0.0,
MAX (height, icon_view->priv->height),
height * 0.1,
height * 0.9,
height);
}
static void
gtk_icon_view_set_hadjustment (GtkIconView *icon_view,
GtkAdjustment *adjustment)
{
GtkIconViewPrivate *priv = icon_view->priv;
if (adjustment && priv->hadjustment == adjustment)
return;
if (priv->hadjustment != NULL)
{
g_signal_handlers_disconnect_matched (priv->hadjustment,
G_SIGNAL_MATCH_DATA,
0, 0, NULL, NULL, icon_view);
g_object_unref (priv->hadjustment);
}
if (!adjustment)
adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
0.0, 0.0, 0.0);
g_signal_connect (adjustment, "value-changed",
G_CALLBACK (gtk_icon_view_adjustment_changed), icon_view);
priv->hadjustment = g_object_ref_sink (adjustment);
gtk_icon_view_set_hadjustment_values (icon_view);
g_object_notify (G_OBJECT (icon_view), "hadjustment");
}
static void
gtk_icon_view_set_vadjustment (GtkIconView *icon_view,
GtkAdjustment *adjustment)
{
GtkIconViewPrivate *priv = icon_view->priv;
if (adjustment && priv->vadjustment == adjustment)
return;
if (priv->vadjustment != NULL)
{
g_signal_handlers_disconnect_matched (priv->vadjustment,
G_SIGNAL_MATCH_DATA,
0, 0, NULL, NULL, icon_view);
g_object_unref (priv->vadjustment);
}
if (!adjustment)
adjustment = gtk_adjustment_new (0.0, 0.0, 0.0,
0.0, 0.0, 0.0);
g_signal_connect (adjustment, "value-changed",
G_CALLBACK (gtk_icon_view_adjustment_changed), icon_view);
priv->vadjustment = g_object_ref_sink (adjustment);
gtk_icon_view_set_vadjustment_values (icon_view);
g_object_notify (G_OBJECT (icon_view), "vadjustment");
}
static void
gtk_icon_view_adjustment_changed (GtkAdjustment *adjustment,
GtkIconView *icon_view)
{
if (gtk_widget_get_realized (GTK_WIDGET (icon_view)))
{
if (icon_view->priv->doing_rubberband)
gtk_icon_view_update_rubberband (icon_view);
_gtk_icon_view_accessible_adjustment_changed (icon_view);
}
gtk_widget_queue_draw (GTK_WIDGET (icon_view));
}
static gint
compare_sizes (gconstpointer p1,
gconstpointer p2,
gpointer unused)
{
return GPOINTER_TO_INT (((const GtkRequestedSize *) p1)->data)
- GPOINTER_TO_INT (((const GtkRequestedSize *) p2)->data);
}
static void
gtk_icon_view_layout (GtkIconView *icon_view)
{
GtkIconViewPrivate *priv = icon_view->priv;
GtkWidget *widget = GTK_WIDGET (icon_view);
GList *items;
gint item_width; /* this doesn't include item_padding */
gint n_columns, n_rows, n_items;
gint col, row;
GtkRequestedSize *sizes;
gboolean rtl;
int width, height;
if (gtk_icon_view_is_empty (icon_view))
return;
rtl = gtk_widget_get_direction (GTK_WIDGET (icon_view)) == GTK_TEXT_DIR_RTL;
n_items = gtk_icon_view_get_n_items (icon_view);
width = gtk_widget_get_width (widget);
height = gtk_widget_get_height (widget);
gtk_icon_view_compute_n_items_for_size (icon_view,
GTK_ORIENTATION_HORIZONTAL,
width,
NULL, NULL,
&n_columns, &item_width);
n_rows = (n_items + n_columns - 1) / n_columns;
priv->width = n_columns * (item_width + 2 * priv->item_padding + priv->column_spacing) - priv->column_spacing;
priv->width += 2 * priv->margin;
priv->width = MAX (priv->width, width);
/* Clear the per row contexts */
g_ptr_array_set_size (icon_view->priv->row_contexts, 0);
gtk_cell_area_context_reset (priv->cell_area_context);
/* because layouting is complicated. We designed an API
* that is O(N²) and nonsensical.
* And we're proud of it. */
for (items = priv->items; items; items = items->next)
{
_gtk_icon_view_set_cell_data (icon_view, items->data);
gtk_cell_area_get_preferred_width (priv->cell_area,
priv->cell_area_context,
widget,
NULL, NULL);
}
sizes = g_newa (GtkRequestedSize, n_rows);
items = priv->items;
priv->height = priv->margin;
/* Collect the heights for all rows */
for (row = 0; row < n_rows; row++)
{
GtkCellAreaContext *context = gtk_cell_area_copy_context (priv->cell_area, priv->cell_area_context);
g_ptr_array_add (priv->row_contexts, context);
for (col = 0; col < n_columns && items; col++, items = items->next)
{
GtkIconViewItem *item = items->data;
_gtk_icon_view_set_cell_data (icon_view, item);
gtk_cell_area_get_preferred_height_for_width (priv->cell_area,
context,
widget,
item_width,
NULL, NULL);
}
sizes[row].data = GINT_TO_POINTER (row);
gtk_cell_area_context_get_preferred_height_for_width (context,
item_width,
&sizes[row].minimum_size,
&sizes[row].natural_size);
priv->height += sizes[row].minimum_size + 2 * priv->item_padding + priv->row_spacing;
}
priv->height -= priv->row_spacing;
priv->height += priv->margin;
priv->height = MIN (priv->height, height);
gtk_distribute_natural_allocation (height - priv->height,
n_rows,
sizes);
/* Actually allocate the rows */
g_qsort_with_data (sizes, n_rows, sizeof (GtkRequestedSize), compare_sizes, NULL);
items = priv->items;
priv->height = priv->margin;
for (row = 0; row < n_rows; row++)
{
GtkCellAreaContext *context = g_ptr_array_index (priv->row_contexts, row);
gtk_cell_area_context_allocate (context, item_width, sizes[row].minimum_size);
priv->height += priv->item_padding;
for (col = 0; col < n_columns && items; col++, items = items->next)
{
GtkIconViewItem *item = items->data;
item->cell_area.x = priv->margin + (col * 2 + 1) * priv->item_padding + col * (priv->column_spacing + item_width);
item->cell_area.width = item_width;
item->cell_area.y = priv->height;
item->cell_area.height = sizes[row].minimum_size;
item->row = row;
item->col = col;
if (rtl)
{
item->cell_area.x = priv->width - item_width - item->cell_area.x;
item->col = n_columns - 1 - col;
}
}
priv->height += sizes[row].minimum_size + priv->item_padding + priv->row_spacing;
}
priv->height -= priv->row_spacing;
priv->height += priv->margin;
priv->height = MAX (priv->height, height);
}
static void
gtk_icon_view_invalidate_sizes (GtkIconView *icon_view)
{
/* Clear all item sizes */
g_list_foreach (icon_view->priv->items,
(GFunc)gtk_icon_view_item_invalidate_size, NULL);
/* Re-layout the items */
gtk_widget_queue_resize (GTK_WIDGET (icon_view));
}
static void
gtk_icon_view_item_invalidate_size (GtkIconViewItem *item)
{
item->cell_area.width = -1;
item->cell_area.height = -1;
}
static void
gtk_icon_view_snapshot_item (GtkIconView *icon_view,
GtkSnapshot *snapshot,
GtkIconViewItem *item,
gint x,
gint y,
gboolean draw_focus)
{
GdkRectangle cell_area;
GtkStateFlags state = 0;
GtkCellRendererState flags = 0;
GtkStyleContext *style_context;
GtkWidget *widget = GTK_WIDGET (icon_view);
GtkIconViewPrivate *priv = icon_view->priv;
GtkCellAreaContext *context;
if (priv->model == NULL || item->cell_area.width <= 0 || item->cell_area.height <= 0)
return;
_gtk_icon_view_set_cell_data (icon_view, item);
style_context = gtk_widget_get_style_context (widget);
state = gtk_widget_get_state_flags (widget);
gtk_style_context_save (style_context);
gtk_style_context_add_class (style_context, GTK_STYLE_CLASS_CELL);
state &= ~(GTK_STATE_FLAG_SELECTED | GTK_STATE_FLAG_PRELIGHT);
if ((state & GTK_STATE_FLAG_FOCUSED) &&
item == icon_view->priv->cursor_item)
flags |= GTK_CELL_RENDERER_FOCUSED;
if (item->selected)
{
state |= GTK_STATE_FLAG_SELECTED;
flags |= GTK_CELL_RENDERER_SELECTED;
}
if (item == priv->last_prelight)
{
state |= GTK_STATE_FLAG_PRELIGHT;
flags |= GTK_CELL_RENDERER_PRELIT;
}
gtk_style_context_set_state (style_context, state);
gtk_snapshot_render_background (snapshot, style_context,
x - priv->item_padding,
y - priv->item_padding,
item->cell_area.width + priv->item_padding * 2,
item->cell_area.height + priv->item_padding * 2);
gtk_snapshot_render_frame (snapshot, style_context,
x - priv->item_padding,
y - priv->item_padding,
item->cell_area.width + priv->item_padding * 2,
item->cell_area.height + priv->item_padding * 2);
cell_area.x = x;
cell_area.y = y;
cell_area.width = item->cell_area.width;
cell_area.height = item->cell_area.height;
context = g_ptr_array_index (priv->row_contexts, item->row);
gtk_cell_area_snapshot (priv->cell_area, context,
widget, snapshot, &cell_area, &cell_area, flags,
draw_focus);
gtk_style_context_restore (style_context);
}
static void
gtk_icon_view_snapshot_rubberband (GtkIconView *icon_view,
GtkSnapshot *snapshot)
{
GtkIconViewPrivate *priv = icon_view->priv;
GtkStyleContext *context;
GdkRectangle rect;
rect.x = MIN (priv->rubberband_x1, priv->rubberband_x2);
rect.y = MIN (priv->rubberband_y1, priv->rubberband_y2);
rect.width = ABS (priv->rubberband_x1 - priv->rubberband_x2) + 1;
rect.height = ABS (priv->rubberband_y1 - priv->rubberband_y2) + 1;
context = gtk_widget_get_style_context (GTK_WIDGET (icon_view));
gtk_style_context_save_to_node (context, priv->rubberband_node);
gtk_snapshot_render_background (snapshot, context,
rect.x, rect.y,
rect.width, rect.height);
gtk_snapshot_render_frame (snapshot, context,
rect.x, rect.y,
rect.width, rect.height);
gtk_style_context_restore (context);
}
static void
gtk_icon_view_queue_draw_path (GtkIconView *icon_view,
GtkTreePath *path)
{
GList *l;
gint index;
index = gtk_tree_path_get_indices (path)[0];
for (l = icon_view->priv->items; l; l = l->next)
{
GtkIconViewItem *item = l->data;
if (item->index == index)
{
gtk_icon_view_queue_draw_item (icon_view, item);
break;
}
}
}
static void
gtk_icon_view_queue_draw_item (GtkIconView *icon_view,
GtkIconViewItem *item)
{
gtk_widget_queue_draw (GTK_WIDGET (icon_view));
}
void
_gtk_icon_view_set_cursor_item (GtkIconView *icon_view,
GtkIconViewItem *item,
GtkCellRenderer *cursor_cell)
{
AtkObject *obj;
AtkObject *item_obj;
AtkObject *cursor_item_obj;
/* When hitting this path from keynav, the focus cell is
* already set, we dont need to notify the atk object
* but we still need to queue the draw here (in the case
* that the focus cell changes but not the cursor item).
*/
gtk_icon_view_queue_draw_item (icon_view, item);
if (icon_view->priv->cursor_item == item &&
(cursor_cell == NULL || cursor_cell == gtk_cell_area_get_focus_cell (icon_view->priv->cell_area)))
return;
obj = gtk_widget_get_accessible (GTK_WIDGET (icon_view));
if (icon_view->priv->cursor_item != NULL)
{
gtk_icon_view_queue_draw_item (icon_view, icon_view->priv->cursor_item);
if (obj != NULL)
{
cursor_item_obj = atk_object_ref_accessible_child (obj, icon_view->priv->cursor_item->index);
if (cursor_item_obj != NULL)
atk_object_notify_state_change (cursor_item_obj, ATK_STATE_FOCUSED, FALSE);
}
}
icon_view->priv->cursor_item = item;
if (cursor_cell)
gtk_cell_area_set_focus_cell (icon_view->priv->cell_area, cursor_cell);
else
{
/* Make sure there is a cell in focus initially */
if (!gtk_cell_area_get_focus_cell (icon_view->priv->cell_area))
gtk_cell_area_focus (icon_view->priv->cell_area, GTK_DIR_TAB_FORWARD);
}
/* Notify that accessible focus object has changed */
item_obj = atk_object_ref_accessible_child (obj, item->index);
if (item_obj != NULL)
{
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
atk_focus_tracker_notify (item_obj);
G_GNUC_END_IGNORE_DEPRECATIONS;
atk_object_notify_state_change (item_obj, ATK_STATE_FOCUSED, TRUE);
g_object_unref (item_obj);
}
}
static GtkIconViewItem *
gtk_icon_view_item_new (void)
{
GtkIconViewItem *item;
item = g_slice_new0 (GtkIconViewItem);
item->cell_area.width = -1;
item->cell_area.height = -1;
return item;
}
static void
gtk_icon_view_item_free (GtkIconViewItem *item)
{
g_return_if_fail (item != NULL);
g_slice_free (GtkIconViewItem, item);
}
GtkIconViewItem *
_gtk_icon_view_get_item_at_coords (GtkIconView *icon_view,
gint x,
gint y,
gboolean only_in_cell,
GtkCellRenderer **cell_at_pos)
{
GList *items;
if (cell_at_pos)
*cell_at_pos = NULL;
for (items = icon_view->priv->items; items; items = items->next)
{
GtkIconViewItem *item = items->data;
GdkRectangle *item_area = &item->cell_area;
if (x >= item_area->x - icon_view->priv->column_spacing/2 &&
x <= item_area->x + item_area->width + icon_view->priv->column_spacing/2 &&
y >= item_area->y - icon_view->priv->row_spacing/2 &&
y <= item_area->y + item_area->height + icon_view->priv->row_spacing/2)
{
if (only_in_cell || cell_at_pos)
{
GtkCellRenderer *cell = NULL;
GtkCellAreaContext *context;
context = g_ptr_array_index (icon_view->priv->row_contexts, item->row);
_gtk_icon_view_set_cell_data (icon_view, item);
if (x >= item_area->x && x <= item_area->x + item_area->width &&
y >= item_area->y && y <= item_area->y + item_area->height)
cell = gtk_cell_area_get_cell_at_position (icon_view->priv->cell_area, context,
GTK_WIDGET (icon_view),
item_area,
x, y, NULL);
if (cell_at_pos)
*cell_at_pos = cell;
if (only_in_cell)
return cell != NULL ? item : NULL;
else
return item;
}
return item;
}
}
return NULL;
}
void
_gtk_icon_view_select_item (GtkIconView *icon_view,
GtkIconViewItem *item)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
g_return_if_fail (item != NULL);
if (item->selected)
return;
if (icon_view->priv->selection_mode == GTK_SELECTION_NONE)
return;
else if (icon_view->priv->selection_mode != GTK_SELECTION_MULTIPLE)
gtk_icon_view_unselect_all_internal (icon_view);
item->selected = TRUE;
gtk_icon_view_item_selected_changed (icon_view, item);
g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
gtk_icon_view_queue_draw_item (icon_view, item);
}
void
_gtk_icon_view_unselect_item (GtkIconView *icon_view,
GtkIconViewItem *item)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
g_return_if_fail (item != NULL);
if (!item->selected)
return;
if (icon_view->priv->selection_mode == GTK_SELECTION_NONE ||
icon_view->priv->selection_mode == GTK_SELECTION_BROWSE)
return;
item->selected = FALSE;
gtk_icon_view_item_selected_changed (icon_view, item);
g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
gtk_icon_view_queue_draw_item (icon_view, item);
}
static void
verify_items (GtkIconView *icon_view)
{
GList *items;
int i = 0;
for (items = icon_view->priv->items; items; items = items->next)
{
GtkIconViewItem *item = items->data;
if (item->index != i)
g_error ("List item does not match its index: "
"item index %d and list index %d\n", item->index, i);
i++;
}
}
static void
gtk_icon_view_row_changed (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data)
{
GtkIconView *icon_view = GTK_ICON_VIEW (data);
/* ignore changes in branches */
if (gtk_tree_path_get_depth (path) > 1)
return;
/* An icon view subclass might add it's own model and populate
* things at init() time instead of waiting for the constructor()
* to be called
*/
if (icon_view->priv->cell_area)
gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
/* Here we can use a "grow-only" strategy for optimization
* and only invalidate a single item and queue a relayout
* instead of invalidating the whole thing.
*
* For now GtkIconView still cant deal with huge models
* so just invalidate the whole thing when the model
* changes.
*/
gtk_icon_view_invalidate_sizes (icon_view);
verify_items (icon_view);
}
static void
gtk_icon_view_row_inserted (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data)
{
GtkIconView *icon_view = GTK_ICON_VIEW (data);
gint index;
GtkIconViewItem *item;
GList *list;
/* ignore changes in branches */
if (gtk_tree_path_get_depth (path) > 1)
return;
gtk_tree_model_ref_node (model, iter);
index = gtk_tree_path_get_indices(path)[0];
item = gtk_icon_view_item_new ();
item->index = index;
/* FIXME: We can be more efficient here,
we can store a tail pointer and use that when
appending (which is a rather common operation)
*/
icon_view->priv->items = g_list_insert (icon_view->priv->items,
item, index);
list = g_list_nth (icon_view->priv->items, index + 1);
for (; list; list = list->next)
{
item = list->data;
item->index++;
}
verify_items (icon_view);
gtk_widget_queue_resize (GTK_WIDGET (icon_view));
}
static void
gtk_icon_view_row_deleted (GtkTreeModel *model,
GtkTreePath *path,
gpointer data)
{
GtkIconView *icon_view = GTK_ICON_VIEW (data);
gint index;
GtkIconViewItem *item;
GList *list, *next;
gboolean emit = FALSE;
GtkTreeIter iter;
/* ignore changes in branches */
if (gtk_tree_path_get_depth (path) > 1)
return;
if (gtk_tree_model_get_iter (model, &iter, path))
gtk_tree_model_unref_node (model, &iter);
index = gtk_tree_path_get_indices(path)[0];
list = g_list_nth (icon_view->priv->items, index);
item = list->data;
if (icon_view->priv->cell_area)
gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
if (item == icon_view->priv->anchor_item)
icon_view->priv->anchor_item = NULL;
if (item == icon_view->priv->cursor_item)
icon_view->priv->cursor_item = NULL;
if (item == icon_view->priv->last_prelight)
icon_view->priv->last_prelight = NULL;
if (item->selected)
emit = TRUE;
gtk_icon_view_item_free (item);
for (next = list->next; next; next = next->next)
{
item = next->data;
item->index--;
}
icon_view->priv->items = g_list_delete_link (icon_view->priv->items, list);
verify_items (icon_view);
gtk_widget_queue_resize (GTK_WIDGET (icon_view));
if (emit)
g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
}
static void
gtk_icon_view_rows_reordered (GtkTreeModel *model,
GtkTreePath *parent,
GtkTreeIter *iter,
gint *new_order,
gpointer data)
{
GtkIconView *icon_view = GTK_ICON_VIEW (data);
int i;
int length;
GList *items = NULL, *list;
GtkIconViewItem **item_array;
gint *order;
/* ignore changes in branches */
if (iter != NULL)
return;
if (icon_view->priv->cell_area)
gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
length = gtk_tree_model_iter_n_children (model, NULL);
order = g_new (gint, length);
for (i = 0; i < length; i++)
order [new_order[i]] = i;
item_array = g_new (GtkIconViewItem *, length);
for (i = 0, list = icon_view->priv->items; list != NULL; list = list->next, i++)
item_array[order[i]] = list->data;
g_free (order);
for (i = length - 1; i >= 0; i--)
{
item_array[i]->index = i;
items = g_list_prepend (items, item_array[i]);
}
g_free (item_array);
g_list_free (icon_view->priv->items);
icon_view->priv->items = items;
gtk_widget_queue_resize (GTK_WIDGET (icon_view));
verify_items (icon_view);
}
static void
gtk_icon_view_build_items (GtkIconView *icon_view)
{
GtkTreeIter iter;
int i;
GList *items = NULL;
if (!gtk_tree_model_get_iter_first (icon_view->priv->model,
&iter))
return;
i = 0;
do
{
GtkIconViewItem *item = gtk_icon_view_item_new ();
item->index = i;
i++;
items = g_list_prepend (items, item);
} while (gtk_tree_model_iter_next (icon_view->priv->model, &iter));
icon_view->priv->items = g_list_reverse (items);
}
static void
gtk_icon_view_add_move_binding (GtkBindingSet *binding_set,
guint keyval,
guint modmask,
GtkMovementStep step,
gint count)
{
gtk_binding_entry_add_signal (binding_set, keyval, modmask,
I_("move-cursor"), 2,
G_TYPE_ENUM, step,
G_TYPE_INT, count);
gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
"move-cursor", 2,
G_TYPE_ENUM, step,
G_TYPE_INT, count);
if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
return;
gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
"move-cursor", 2,
G_TYPE_ENUM, step,
G_TYPE_INT, count);
gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
"move-cursor", 2,
G_TYPE_ENUM, step,
G_TYPE_INT, count);
}
static gboolean
gtk_icon_view_real_move_cursor (GtkIconView *icon_view,
GtkMovementStep step,
gint count)
{
GdkModifierType state;
g_return_val_if_fail (GTK_ICON_VIEW (icon_view), FALSE);
g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
step == GTK_MOVEMENT_VISUAL_POSITIONS ||
step == GTK_MOVEMENT_DISPLAY_LINES ||
step == GTK_MOVEMENT_PAGES ||
step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
if (!gtk_widget_has_focus (GTK_WIDGET (icon_view)))
return FALSE;
gtk_cell_area_stop_editing (icon_view->priv->cell_area, FALSE);
gtk_widget_grab_focus (GTK_WIDGET (icon_view));
if (gtk_get_current_event_state (&state))
{
GdkModifierType extend_mod_mask;
GdkModifierType modify_mod_mask;
extend_mod_mask =
gtk_widget_get_modifier_mask (GTK_WIDGET (icon_view),
GDK_MODIFIER_INTENT_EXTEND_SELECTION);
modify_mod_mask =
gtk_widget_get_modifier_mask (GTK_WIDGET (icon_view),
GDK_MODIFIER_INTENT_MODIFY_SELECTION);
if ((state & modify_mod_mask) == modify_mod_mask)
icon_view->priv->modify_selection_pressed = TRUE;
if ((state & extend_mod_mask) == extend_mod_mask)
icon_view->priv->extend_selection_pressed = TRUE;
}
/* else we assume not pressed */
switch (step)
{
case GTK_MOVEMENT_LOGICAL_POSITIONS:
case GTK_MOVEMENT_VISUAL_POSITIONS:
gtk_icon_view_move_cursor_left_right (icon_view, count);
break;
case GTK_MOVEMENT_DISPLAY_LINES:
gtk_icon_view_move_cursor_up_down (icon_view, count);
break;
case GTK_MOVEMENT_PAGES:
gtk_icon_view_move_cursor_page_up_down (icon_view, count);
break;
case GTK_MOVEMENT_BUFFER_ENDS:
gtk_icon_view_move_cursor_start_end (icon_view, count);
break;
case GTK_MOVEMENT_WORDS:
case GTK_MOVEMENT_DISPLAY_LINE_ENDS:
case GTK_MOVEMENT_PARAGRAPHS:
case GTK_MOVEMENT_PARAGRAPH_ENDS:
case GTK_MOVEMENT_HORIZONTAL_PAGES:
default:
g_assert_not_reached ();
break;
}
icon_view->priv->modify_selection_pressed = FALSE;
icon_view->priv->extend_selection_pressed = FALSE;
icon_view->priv->draw_focus = TRUE;
return TRUE;
}
static GtkIconViewItem *
find_item (GtkIconView *icon_view,
GtkIconViewItem *current,
gint row_ofs,
gint col_ofs)
{
gint row, col;
GList *items;
GtkIconViewItem *item;
/* FIXME: this could be more efficient
*/
row = current->row + row_ofs;
col = current->col + col_ofs;
for (items = icon_view->priv->items; items; items = items->next)
{
item = items->data;
if (item->row == row && item->col == col)
return item;
}
return NULL;
}
static GtkIconViewItem *
find_item_page_up_down (GtkIconView *icon_view,
GtkIconViewItem *current,
gint count)
{
GList *item, *next;
gint y, col;
col = current->col;
y = current->cell_area.y + count * gtk_adjustment_get_page_size (icon_view->priv->vadjustment);
item = g_list_find (icon_view->priv->items, current);
if (count > 0)
{
while (item)
{
for (next = item->next; next; next = next->next)
{
if (((GtkIconViewItem *)next->data)->col == col)
break;
}
if (!next || ((GtkIconViewItem *)next->data)->cell_area.y > y)
break;
item = next;
}
}
else
{
while (item)
{
for (next = item->prev; next; next = next->prev)
{
if (((GtkIconViewItem *)next->data)->col == col)
break;
}
if (!next || ((GtkIconViewItem *)next->data)->cell_area.y < y)
break;
item = next;
}
}
if (item)
return item->data;
return NULL;
}
static gboolean
gtk_icon_view_select_all_between (GtkIconView *icon_view,
GtkIconViewItem *anchor,
GtkIconViewItem *cursor)
{
GList *items;
GtkIconViewItem *item;
gint row1, row2, col1, col2;
gboolean dirty = FALSE;
if (anchor->row < cursor->row)
{
row1 = anchor->row;
row2 = cursor->row;
}
else
{
row1 = cursor->row;
row2 = anchor->row;
}
if (anchor->col < cursor->col)
{
col1 = anchor->col;
col2 = cursor->col;
}
else
{
col1 = cursor->col;
col2 = anchor->col;
}
for (items = icon_view->priv->items; items; items = items->next)
{
item = items->data;
if (row1 <= item->row && item->row <= row2 &&
col1 <= item->col && item->col <= col2)
{
if (!item->selected)
{
dirty = TRUE;
item->selected = TRUE;
gtk_icon_view_item_selected_changed (icon_view, item);
}
gtk_icon_view_queue_draw_item (icon_view, item);
}
}
return dirty;
}
static void
gtk_icon_view_move_cursor_up_down (GtkIconView *icon_view,
gint count)
{
GtkIconViewItem *item;
GtkCellRenderer *cell = NULL;
gboolean dirty = FALSE;
gint step;
GtkDirectionType direction;
if (!gtk_widget_has_focus (GTK_WIDGET (icon_view)))
return;
direction = count < 0 ? GTK_DIR_UP : GTK_DIR_DOWN;
if (!icon_view->priv->cursor_item)
{
GList *list;
if (count > 0)
list = icon_view->priv->items;
else
list = g_list_last (icon_view->priv->items);
if (list)
{
item = list->data;
/* Give focus to the first cell initially */
_gtk_icon_view_set_cell_data (icon_view, item);
gtk_cell_area_focus (icon_view->priv->cell_area, direction);
}
else
{
item = NULL;
}
}
else
{
item = icon_view->priv->cursor_item;
step = count > 0 ? 1 : -1;
/* Save the current focus cell in case we hit the edge */
cell = gtk_cell_area_get_focus_cell (icon_view->priv->cell_area);
while (item)
{
_gtk_icon_view_set_cell_data (icon_view, item);
if (gtk_cell_area_focus (icon_view->priv->cell_area, direction))
break;
item = find_item (icon_view, item, step, 0);
}
}
if (!item)
{
if (!gtk_widget_keynav_failed (GTK_WIDGET (icon_view), direction))
{
GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (icon_view));
if (toplevel)
gtk_widget_child_focus (toplevel,
direction == GTK_DIR_UP ?
GTK_DIR_TAB_BACKWARD :
GTK_DIR_TAB_FORWARD);
}
gtk_cell_area_set_focus_cell (icon_view->priv->cell_area, cell);
return;
}
if (icon_view->priv->modify_selection_pressed ||
!icon_view->priv->extend_selection_pressed ||
!icon_view->priv->anchor_item ||
icon_view->priv->selection_mode != GTK_SELECTION_MULTIPLE)
icon_view->priv->anchor_item = item;
cell = gtk_cell_area_get_focus_cell (icon_view->priv->cell_area);
_gtk_icon_view_set_cursor_item (icon_view, item, cell);
if (!icon_view->priv->modify_selection_pressed &&
icon_view->priv->selection_mode != GTK_SELECTION_NONE)
{
dirty = gtk_icon_view_unselect_all_internal (icon_view);
dirty = gtk_icon_view_select_all_between (icon_view,
icon_view->priv->anchor_item,
item) || dirty;
}
gtk_icon_view_scroll_to_item (icon_view, item);
if (dirty)
g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
}
static void
gtk_icon_view_move_cursor_page_up_down (GtkIconView *icon_view,
gint count)
{
GtkIconViewItem *item;
gboolean dirty = FALSE;
if (!gtk_widget_has_focus (GTK_WIDGET (icon_view)))
return;
if (!icon_view->priv->cursor_item)
{
GList *list;
if (count > 0)
list = icon_view->priv->items;
else
list = g_list_last (icon_view->priv->items);
item = list ? list->data : NULL;
}
else
item = find_item_page_up_down (icon_view,
icon_view->priv->cursor_item,
count);
if (item == icon_view->priv->cursor_item)
gtk_widget_error_bell (GTK_WIDGET (icon_view));
if (!item)
return;
if (icon_view->priv->modify_selection_pressed ||
!icon_view->priv->extend_selection_pressed ||
!icon_view->priv->anchor_item ||
icon_view->priv->selection_mode != GTK_SELECTION_MULTIPLE)
icon_view->priv->anchor_item = item;
_gtk_icon_view_set_cursor_item (icon_view, item, NULL);
if (!icon_view->priv->modify_selection_pressed &&
icon_view->priv->selection_mode != GTK_SELECTION_NONE)
{
dirty = gtk_icon_view_unselect_all_internal (icon_view);
dirty = gtk_icon_view_select_all_between (icon_view,
icon_view->priv->anchor_item,
item) || dirty;
}
gtk_icon_view_scroll_to_item (icon_view, item);
if (dirty)
g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
}
static void
gtk_icon_view_move_cursor_left_right (GtkIconView *icon_view,
gint count)
{
GtkIconViewItem *item;
GtkCellRenderer *cell = NULL;
gboolean dirty = FALSE;
gint step;
GtkDirectionType direction;
if (!gtk_widget_has_focus (GTK_WIDGET (icon_view)))
return;
direction = count < 0 ? GTK_DIR_LEFT : GTK_DIR_RIGHT;
if (!icon_view->priv->cursor_item)
{
GList *list;
if (count > 0)
list = icon_view->priv->items;
else
list = g_list_last (icon_view->priv->items);
if (list)
{
item = list->data;
/* Give focus to the first cell initially */
_gtk_icon_view_set_cell_data (icon_view, item);
gtk_cell_area_focus (icon_view->priv->cell_area, direction);
}
else
{
item = NULL;
}
}
else
{
item = icon_view->priv->cursor_item;
step = count > 0 ? 1 : -1;
/* Save the current focus cell in case we hit the edge */
cell = gtk_cell_area_get_focus_cell (icon_view->priv->cell_area);
while (item)
{
_gtk_icon_view_set_cell_data (icon_view, item);
if (gtk_cell_area_focus (icon_view->priv->cell_area, direction))
break;
item = find_item (icon_view, item, 0, step);
}
}
if (!item)
{
if (!gtk_widget_keynav_failed (GTK_WIDGET (icon_view), direction))
{
GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (icon_view));
if (toplevel)
gtk_widget_child_focus (toplevel,
direction == GTK_DIR_LEFT ?
GTK_DIR_TAB_BACKWARD :
GTK_DIR_TAB_FORWARD);
}
gtk_cell_area_set_focus_cell (icon_view->priv->cell_area, cell);
return;
}
if (icon_view->priv->modify_selection_pressed ||
!icon_view->priv->extend_selection_pressed ||
!icon_view->priv->anchor_item ||
icon_view->priv->selection_mode != GTK_SELECTION_MULTIPLE)
icon_view->priv->anchor_item = item;
cell = gtk_cell_area_get_focus_cell (icon_view->priv->cell_area);
_gtk_icon_view_set_cursor_item (icon_view, item, cell);
if (!icon_view->priv->modify_selection_pressed &&
icon_view->priv->selection_mode != GTK_SELECTION_NONE)
{
dirty = gtk_icon_view_unselect_all_internal (icon_view);
dirty = gtk_icon_view_select_all_between (icon_view,
icon_view->priv->anchor_item,
item) || dirty;
}
gtk_icon_view_scroll_to_item (icon_view, item);
if (dirty)
g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
}
static void
gtk_icon_view_move_cursor_start_end (GtkIconView *icon_view,
gint count)
{
GtkIconViewItem *item;
GList *list;
gboolean dirty = FALSE;
if (!gtk_widget_has_focus (GTK_WIDGET (icon_view)))
return;
if (count < 0)
list = icon_view->priv->items;
else
list = g_list_last (icon_view->priv->items);
item = list ? list->data : NULL;
if (item == icon_view->priv->cursor_item)
gtk_widget_error_bell (GTK_WIDGET (icon_view));
if (!item)
return;
if (icon_view->priv->modify_selection_pressed ||
!icon_view->priv->extend_selection_pressed ||
!icon_view->priv->anchor_item ||
icon_view->priv->selection_mode != GTK_SELECTION_MULTIPLE)
icon_view->priv->anchor_item = item;
_gtk_icon_view_set_cursor_item (icon_view, item, NULL);
if (!icon_view->priv->modify_selection_pressed &&
icon_view->priv->selection_mode != GTK_SELECTION_NONE)
{
dirty = gtk_icon_view_unselect_all_internal (icon_view);
dirty = gtk_icon_view_select_all_between (icon_view,
icon_view->priv->anchor_item,
item) || dirty;
}
gtk_icon_view_scroll_to_item (icon_view, item);
if (dirty)
g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
}
/**
* gtk_icon_view_scroll_to_path:
* @icon_view: A #GtkIconView.
* @path: The path of the item to move to.
* @use_align: whether to use alignment arguments, or %FALSE.
* @row_align: The vertical alignment of the item specified by @path.
* @col_align: The horizontal alignment of the item specified by @path.
*
* Moves the alignments of @icon_view to the position specified by @path.
* @row_align determines where the row is placed, and @col_align determines
* where @column is placed. Both are expected to be between 0.0 and 1.0.
* 0.0 means left/top alignment, 1.0 means right/bottom alignment, 0.5 means
* center.
*
* If @use_align is %FALSE, then the alignment arguments are ignored, and the
* tree does the minimum amount of work to scroll the item onto the screen.
* This means that the item will be scrolled to the edge closest to its current
* position. If the item is currently visible on the screen, nothing is done.
*
* This function only works if the model is set, and @path is a valid row on
* the model. If the model changes before the @icon_view is realized, the
* centered path will be modified to reflect this change.
**/
void
gtk_icon_view_scroll_to_path (GtkIconView *icon_view,
GtkTreePath *path,
gboolean use_align,
gfloat row_align,
gfloat col_align)
{
GtkIconViewItem *item = NULL;
GtkWidget *widget;
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
g_return_if_fail (path != NULL);
g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
widget = GTK_WIDGET (icon_view);
if (gtk_tree_path_get_depth (path) > 0)
item = g_list_nth_data (icon_view->priv->items,
gtk_tree_path_get_indices(path)[0]);
if (!item || item->cell_area.width < 0 ||
!gtk_widget_get_realized (widget))
{
if (icon_view->priv->scroll_to_path)
gtk_tree_row_reference_free (icon_view->priv->scroll_to_path);
icon_view->priv->scroll_to_path = NULL;
if (path)
icon_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (icon_view), icon_view->priv->model, path);
icon_view->priv->scroll_to_use_align = use_align;
icon_view->priv->scroll_to_row_align = row_align;
icon_view->priv->scroll_to_col_align = col_align;
return;
}
if (use_align)
{
int width, height;
gint x, y;
gfloat offset;
GdkRectangle item_area =
{
item->cell_area.x - icon_view->priv->item_padding,
item->cell_area.y - icon_view->priv->item_padding,
item->cell_area.width + icon_view->priv->item_padding * 2,
item->cell_area.height + icon_view->priv->item_padding * 2
};
x =0;
y =0;
width = gtk_widget_get_width (widget);
height = gtk_widget_get_height (widget);
offset = y + item_area.y - row_align * (height - item_area.height);
gtk_adjustment_set_value (icon_view->priv->vadjustment,
gtk_adjustment_get_value (icon_view->priv->vadjustment) + offset);
offset = x + item_area.x - col_align * (width - item_area.width);
gtk_adjustment_set_value (icon_view->priv->hadjustment,
gtk_adjustment_get_value (icon_view->priv->hadjustment) + offset);
}
else
gtk_icon_view_scroll_to_item (icon_view, item);
}
static void
gtk_icon_view_scroll_to_item (GtkIconView *icon_view,
GtkIconViewItem *item)
{
GtkIconViewPrivate *priv = icon_view->priv;
GtkWidget *widget = GTK_WIDGET (icon_view);
GtkAdjustment *hadj, *vadj;
int widget_width, widget_height;
gint x, y;
GdkRectangle item_area;
item_area.x = item->cell_area.x - priv->item_padding;
item_area.y = item->cell_area.y - priv->item_padding;
item_area.width = item->cell_area.width + priv->item_padding * 2;
item_area.height = item->cell_area.height + priv->item_padding * 2;
widget_width = gtk_widget_get_width (widget);
widget_height = gtk_widget_get_height (widget);
hadj = icon_view->priv->hadjustment;
vadj = icon_view->priv->vadjustment;
x = - gtk_adjustment_get_value (hadj);
y = - gtk_adjustment_get_value (vadj);
if (y + item_area.y < 0)
gtk_adjustment_animate_to_value (vadj,
gtk_adjustment_get_value (vadj)
+ y + item_area.y);
else if (y + item_area.y + item_area.height > widget_height)
gtk_adjustment_animate_to_value (vadj,
gtk_adjustment_get_value (vadj)
+ y + item_area.y + item_area.height - widget_height);
if (x + item_area.x < 0)
gtk_adjustment_animate_to_value (hadj,
gtk_adjustment_get_value (hadj)
+ x + item_area.x);
else if (x + item_area.x + item_area.width > widget_width)
gtk_adjustment_animate_to_value (hadj,
gtk_adjustment_get_value (hadj)
+ x + item_area.x + item_area.width - widget_width);
}
/* GtkCellLayout implementation */
static void
gtk_icon_view_ensure_cell_area (GtkIconView *icon_view,
GtkCellArea *cell_area)
{
GtkIconViewPrivate *priv = icon_view->priv;
if (priv->cell_area)
return;
if (cell_area)
priv->cell_area = cell_area;
else
priv->cell_area = gtk_cell_area_box_new ();
g_object_ref_sink (priv->cell_area);
if (GTK_IS_ORIENTABLE (priv->cell_area))
gtk_orientable_set_orientation (GTK_ORIENTABLE (priv->cell_area), priv->item_orientation);
priv->cell_area_context = gtk_cell_area_create_context (priv->cell_area);
priv->add_editable_id =
g_signal_connect (priv->cell_area, "add-editable",
G_CALLBACK (gtk_icon_view_add_editable), icon_view);
priv->remove_editable_id =
g_signal_connect (priv->cell_area, "remove-editable",
G_CALLBACK (gtk_icon_view_remove_editable), icon_view);
update_text_cell (icon_view);
update_pixbuf_cell (icon_view);
}
static GtkCellArea *
gtk_icon_view_cell_layout_get_area (GtkCellLayout *cell_layout)
{
GtkIconView *icon_view = GTK_ICON_VIEW (cell_layout);
GtkIconViewPrivate *priv = icon_view->priv;
if (G_UNLIKELY (!priv->cell_area))
gtk_icon_view_ensure_cell_area (icon_view, NULL);
return icon_view->priv->cell_area;
}
void
_gtk_icon_view_set_cell_data (GtkIconView *icon_view,
GtkIconViewItem *item)
{
GtkTreeIter iter;
GtkTreePath *path;
path = gtk_tree_path_new_from_indices (item->index, -1);
if (!gtk_tree_model_get_iter (icon_view->priv->model, &iter, path))
return;
gtk_tree_path_free (path);
gtk_cell_area_apply_attributes (icon_view->priv->cell_area,
icon_view->priv->model,
&iter, FALSE, FALSE);
}
/* Public API */
/**
* gtk_icon_view_new:
*
* Creates a new #GtkIconView widget
*
* Returns: A newly created #GtkIconView widget
**/
GtkWidget *
gtk_icon_view_new (void)
{
return g_object_new (GTK_TYPE_ICON_VIEW, NULL);
}
/**
* gtk_icon_view_new_with_area:
* @area: the #GtkCellArea to use to layout cells
*
* Creates a new #GtkIconView widget using the
* specified @area to layout cells inside the icons.
*
* Returns: A newly created #GtkIconView widget
**/
GtkWidget *
gtk_icon_view_new_with_area (GtkCellArea *area)
{
return g_object_new (GTK_TYPE_ICON_VIEW, "cell-area", area, NULL);
}
/**
* gtk_icon_view_new_with_model:
* @model: The model.
*
* Creates a new #GtkIconView widget with the model @model.
*
* Returns: A newly created #GtkIconView widget.
**/
GtkWidget *
gtk_icon_view_new_with_model (GtkTreeModel *model)
{
return g_object_new (GTK_TYPE_ICON_VIEW, "model", model, NULL);
}
/**
* gtk_icon_view_get_path_at_pos:
* @icon_view: A #GtkIconView.
* @x: The x position to be identified
* @y: The y position to be identified
*
* Returns: (nullable) (transfer full): The #GtkTreePath corresponding
* to the icon or %NULL if no icon exists at that position.
**/
GtkTreePath *
gtk_icon_view_get_path_at_pos (GtkIconView *icon_view,
gint x,
gint y)
{
GtkIconViewItem *item;
GtkTreePath *path;
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), NULL);
item = _gtk_icon_view_get_item_at_coords (icon_view, x, y, TRUE, NULL);
if (!item)
return NULL;
path = gtk_tree_path_new_from_indices (item->index, -1);
return path;
}
/**
* gtk_icon_view_get_item_at_pos:
* @icon_view: A #GtkIconView.
* @x: The x position to be identified
* @y: The y position to be identified
* @path: (out) (allow-none): Return location for the path, or %NULL
* @cell: (out) (allow-none) (transfer none): Return location for the renderer
* responsible for the cell at (@x, @y), or %NULL
*
* Returns: %TRUE if an item exists at the specified position
**/
gboolean
gtk_icon_view_get_item_at_pos (GtkIconView *icon_view,
gint x,
gint y,
GtkTreePath **path,
GtkCellRenderer **cell)
{
GtkIconViewItem *item;
GtkCellRenderer *renderer = NULL;
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
item = _gtk_icon_view_get_item_at_coords (icon_view, x, y, TRUE, &renderer);
if (path != NULL)
{
if (item != NULL)
*path = gtk_tree_path_new_from_indices (item->index, -1);
else
*path = NULL;
}
if (cell != NULL)
*cell = renderer;
return (item != NULL);
}
/**
* gtk_icon_view_get_cell_rect:
* @icon_view: a #GtkIconView
* @path: a #GtkTreePath
* @cell: (allow-none): a #GtkCellRenderer or %NULL
* @rect: (out): rectangle to fill with cell rect
*
* Fills the bounding rectangle in widget coordinates for the cell specified by
* @path and @cell. If @cell is %NULL the main cell area is used.
*
* This function is only valid if @icon_view is realized.
*
* Returns: %FALSE if there is no such item, %TRUE otherwise
*/
gboolean
gtk_icon_view_get_cell_rect (GtkIconView *icon_view,
GtkTreePath *path,
GtkCellRenderer *cell,
GdkRectangle *rect)
{
GtkIconViewItem *item = NULL;
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
g_return_val_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell), FALSE);
if (gtk_tree_path_get_depth (path) > 0)
item = g_list_nth_data (icon_view->priv->items,
gtk_tree_path_get_indices(path)[0]);
if (!item)
return FALSE;
if (cell)
{
GtkCellAreaContext *context;
context = g_ptr_array_index (icon_view->priv->row_contexts, item->row);
_gtk_icon_view_set_cell_data (icon_view, item);
gtk_cell_area_get_cell_allocation (icon_view->priv->cell_area, context,
GTK_WIDGET (icon_view),
cell, &item->cell_area, rect);
}
else
{
rect->x = item->cell_area.x - icon_view->priv->item_padding;
rect->y = item->cell_area.y - icon_view->priv->item_padding;
rect->width = item->cell_area.width + icon_view->priv->item_padding * 2;
rect->height = item->cell_area.height + icon_view->priv->item_padding * 2;
}
return TRUE;
}
/**
* gtk_icon_view_set_tooltip_item:
* @icon_view: a #GtkIconView
* @tooltip: a #GtkTooltip
* @path: a #GtkTreePath
*
* Sets the tip area of @tooltip to be the area covered by the item at @path.
* See also gtk_icon_view_set_tooltip_column() for a simpler alternative.
* See also gtk_tooltip_set_tip_area().
*/
void
gtk_icon_view_set_tooltip_item (GtkIconView *icon_view,
GtkTooltip *tooltip,
GtkTreePath *path)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
gtk_icon_view_set_tooltip_cell (icon_view, tooltip, path, NULL);
}
/**
* gtk_icon_view_set_tooltip_cell:
* @icon_view: a #GtkIconView
* @tooltip: a #GtkTooltip
* @path: a #GtkTreePath
* @cell: (allow-none): a #GtkCellRenderer or %NULL
*
* Sets the tip area of @tooltip to the area which @cell occupies in
* the item pointed to by @path. See also gtk_tooltip_set_tip_area().
*
* See also gtk_icon_view_set_tooltip_column() for a simpler alternative.
*/
void
gtk_icon_view_set_tooltip_cell (GtkIconView *icon_view,
GtkTooltip *tooltip,
GtkTreePath *path,
GtkCellRenderer *cell)
{
GdkRectangle rect;
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
if (!gtk_icon_view_get_cell_rect (icon_view, path, cell, &rect))
return;
gtk_tooltip_set_tip_area (tooltip, &rect);
}
/**
* gtk_icon_view_get_tooltip_context:
* @icon_view: an #GtkIconView
* @x: (inout): the x coordinate (relative to widget coordinates)
* @y: (inout): the y coordinate (relative to widget coordinates)
* @keyboard_tip: whether this is a keyboard tooltip or not
* @model: (out) (allow-none) (transfer none): a pointer to receive a
* #GtkTreeModel or %NULL
* @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
* @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
*
* This function is supposed to be used in a #GtkWidget::query-tooltip
* signal handler for #GtkIconView. The @x, @y and @keyboard_tip values
* which are received in the signal handler, should be passed to this
* function without modification.
*
* The return value indicates whether there is an icon view item at the given
* coordinates (%TRUE) or not (%FALSE) for mouse tooltips. For keyboard
* tooltips the item returned will be the cursor item. When %TRUE, then any of
* @model, @path and @iter which have been provided will be set to point to
* that row and the corresponding model.
*
* Returns: whether or not the given tooltip context points to a item
*/
gboolean
gtk_icon_view_get_tooltip_context (GtkIconView *icon_view,
gint *x,
gint *y,
gboolean keyboard_tip,
GtkTreeModel **model,
GtkTreePath **path,
GtkTreeIter *iter)
{
GtkTreePath *tmppath = NULL;
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
g_return_val_if_fail (x != NULL, FALSE);
g_return_val_if_fail (y != NULL, FALSE);
if (keyboard_tip)
{
gtk_icon_view_get_cursor (icon_view, &tmppath, NULL);
if (!tmppath)
return FALSE;
}
else
{
if (!gtk_icon_view_get_item_at_pos (icon_view, *x, *y, &tmppath, NULL))
return FALSE;
}
if (model)
*model = gtk_icon_view_get_model (icon_view);
if (iter)
gtk_tree_model_get_iter (gtk_icon_view_get_model (icon_view),
iter, tmppath);
if (path)
*path = tmppath;
else
gtk_tree_path_free (tmppath);
return TRUE;
}
static gboolean
gtk_icon_view_set_tooltip_query_cb (GtkWidget *widget,
gint x,
gint y,
gboolean keyboard_tip,
GtkTooltip *tooltip,
gpointer data)
{
gchar *str;
GtkTreeIter iter;
GtkTreePath *path;
GtkTreeModel *model;
GtkIconView *icon_view = GTK_ICON_VIEW (widget);
if (!gtk_icon_view_get_tooltip_context (GTK_ICON_VIEW (widget),
&x, &y,
keyboard_tip,
&model, &path, &iter))
return FALSE;
gtk_tree_model_get (model, &iter, icon_view->priv->tooltip_column, &str, -1);
if (!str)
{
gtk_tree_path_free (path);
return FALSE;
}
gtk_tooltip_set_markup (tooltip, str);
gtk_icon_view_set_tooltip_item (icon_view, tooltip, path);
gtk_tree_path_free (path);
g_free (str);
return TRUE;
}
/**
* gtk_icon_view_set_tooltip_column:
* @icon_view: a #GtkIconView
* @column: an integer, which is a valid column number for @icon_view’s model
*
* If you only plan to have simple (text-only) tooltips on full items, you
* can use this function to have #GtkIconView handle these automatically
* for you. @column should be set to the column in @icon_view’s model
* containing the tooltip texts, or -1 to disable this feature.
*
* When enabled, #GtkWidget:has-tooltip will be set to %TRUE and
* @icon_view will connect a #GtkWidget::query-tooltip signal handler.
*
* Note that the signal handler sets the text with gtk_tooltip_set_markup(),
* so &, <, etc have to be escaped in the text.
*/
void
gtk_icon_view_set_tooltip_column (GtkIconView *icon_view,
gint column)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
if (column == icon_view->priv->tooltip_column)
return;
if (column == -1)
{
g_signal_handlers_disconnect_by_func (icon_view,
gtk_icon_view_set_tooltip_query_cb,
NULL);
gtk_widget_set_has_tooltip (GTK_WIDGET (icon_view), FALSE);
}
else
{
if (icon_view->priv->tooltip_column == -1)
{
g_signal_connect (icon_view, "query-tooltip",
G_CALLBACK (gtk_icon_view_set_tooltip_query_cb), NULL);
gtk_widget_set_has_tooltip (GTK_WIDGET (icon_view), TRUE);
}
}
icon_view->priv->tooltip_column = column;
g_object_notify (G_OBJECT (icon_view), "tooltip-column");
}
/**
* gtk_icon_view_get_tooltip_column:
* @icon_view: a #GtkIconView
*
* Returns the column of @icon_view’s model which is being used for
* displaying tooltips on @icon_view’s rows.
*
* Returns: the index of the tooltip column that is currently being
* used, or -1 if this is disabled.
*/
gint
gtk_icon_view_get_tooltip_column (GtkIconView *icon_view)
{
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), 0);
return icon_view->priv->tooltip_column;
}
/**
* gtk_icon_view_get_visible_range:
* @icon_view: A #GtkIconView
* @start_path: (out) (allow-none): Return location for start of region,
* or %NULL
* @end_path: (out) (allow-none): Return location for end of region, or %NULL
*
* Sets @start_path and @end_path to be the first and last visible path.
* Note that there may be invisible paths in between.
*
* Both paths should be freed with gtk_tree_path_free() after use.
*
* Returns: %TRUE, if valid paths were placed in @start_path and @end_path
**/
gboolean
gtk_icon_view_get_visible_range (GtkIconView *icon_view,
GtkTreePath **start_path,
GtkTreePath **end_path)
{
gint start_index = -1;
gint end_index = -1;
GList *icons;
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
if (icon_view->priv->hadjustment == NULL ||
icon_view->priv->vadjustment == NULL)
return FALSE;
if (start_path == NULL && end_path == NULL)
return FALSE;
for (icons = icon_view->priv->items; icons; icons = icons->next)
{
GtkIconViewItem *item = icons->data;
GdkRectangle *item_area = &item->cell_area;
if ((item_area->x + item_area->width >= (int)gtk_adjustment_get_value (icon_view->priv->hadjustment)) &&
(item_area->y + item_area->height >= (int)gtk_adjustment_get_value (icon_view->priv->vadjustment)) &&
(item_area->x <=
(int) (gtk_adjustment_get_value (icon_view->priv->hadjustment) +
gtk_adjustment_get_page_size (icon_view->priv->hadjustment))) &&
(item_area->y <=
(int) (gtk_adjustment_get_value (icon_view->priv->vadjustment) +
gtk_adjustment_get_page_size (icon_view->priv->vadjustment))))
{
if (start_index == -1)
start_index = item->index;
end_index = item->index;
}
}
if (start_path && start_index != -1)
*start_path = gtk_tree_path_new_from_indices (start_index, -1);
if (end_path && end_index != -1)
*end_path = gtk_tree_path_new_from_indices (end_index, -1);
return start_index != -1;
}
/**
* gtk_icon_view_selected_foreach:
* @icon_view: A #GtkIconView.
* @func: (scope call): The function to call for each selected icon.
* @data: User data to pass to the function.
*
* Calls a function for each selected icon. Note that the model or
* selection cannot be modified from within this function.
**/
void
gtk_icon_view_selected_foreach (GtkIconView *icon_view,
GtkIconViewForeachFunc func,
gpointer data)
{
GList *list;
for (list = icon_view->priv->items; list; list = list->next)
{
GtkIconViewItem *item = list->data;
GtkTreePath *path = gtk_tree_path_new_from_indices (item->index, -1);
if (item->selected)
(* func) (icon_view, path, data);
gtk_tree_path_free (path);
}
}
/**
* gtk_icon_view_set_selection_mode:
* @icon_view: A #GtkIconView.
* @mode: The selection mode
*
* Sets the selection mode of the @icon_view.
**/
void
gtk_icon_view_set_selection_mode (GtkIconView *icon_view,
GtkSelectionMode mode)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
if (mode == icon_view->priv->selection_mode)
return;
if (mode == GTK_SELECTION_NONE ||
icon_view->priv->selection_mode == GTK_SELECTION_MULTIPLE)
gtk_icon_view_unselect_all (icon_view);
icon_view->priv->selection_mode = mode;
g_object_notify (G_OBJECT (icon_view), "selection-mode");
}
/**
* gtk_icon_view_get_selection_mode:
* @icon_view: A #GtkIconView.
*
* Gets the selection mode of the @icon_view.
*
* Returns: the current selection mode
**/
GtkSelectionMode
gtk_icon_view_get_selection_mode (GtkIconView *icon_view)
{
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), GTK_SELECTION_SINGLE);
return icon_view->priv->selection_mode;
}
/**
* gtk_icon_view_set_model:
* @icon_view: A #GtkIconView.
* @model: (allow-none): The model.
*
* Sets the model for a #GtkIconView.
* If the @icon_view already has a model set, it will remove
* it before setting the new model. If @model is %NULL, then
* it will unset the old model.
**/
void
gtk_icon_view_set_model (GtkIconView *icon_view,
GtkTreeModel *model)
{
gboolean dirty;
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
if (icon_view->priv->model == model)
return;
if (icon_view->priv->scroll_to_path)
{
gtk_tree_row_reference_free (icon_view->priv->scroll_to_path);
icon_view->priv->scroll_to_path = NULL;
}
/* The area can be NULL while disposing */
if (icon_view->priv->cell_area)
gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
dirty = gtk_icon_view_unselect_all_internal (icon_view);
if (model)
{
GType column_type;
if (icon_view->priv->pixbuf_column != -1)
{
column_type = gtk_tree_model_get_column_type (model,
icon_view->priv->pixbuf_column);
g_return_if_fail (column_type == GDK_TYPE_PIXBUF);
}
if (icon_view->priv->text_column != -1)
{
column_type = gtk_tree_model_get_column_type (model,
icon_view->priv->text_column);
g_return_if_fail (column_type == G_TYPE_STRING);
}
if (icon_view->priv->markup_column != -1)
{
column_type = gtk_tree_model_get_column_type (model,
icon_view->priv->markup_column);
g_return_if_fail (column_type == G_TYPE_STRING);
}
}
if (icon_view->priv->model)
{
g_signal_handlers_disconnect_by_func (icon_view->priv->model,
gtk_icon_view_row_changed,
icon_view);
g_signal_handlers_disconnect_by_func (icon_view->priv->model,
gtk_icon_view_row_inserted,
icon_view);
g_signal_handlers_disconnect_by_func (icon_view->priv->model,
gtk_icon_view_row_deleted,
icon_view);
g_signal_handlers_disconnect_by_func (icon_view->priv->model,
gtk_icon_view_rows_reordered,
icon_view);
g_object_unref (icon_view->priv->model);
g_list_free_full (icon_view->priv->items, (GDestroyNotify) gtk_icon_view_item_free);
icon_view->priv->items = NULL;
icon_view->priv->anchor_item = NULL;
icon_view->priv->cursor_item = NULL;
icon_view->priv->last_single_clicked = NULL;
icon_view->priv->last_prelight = NULL;
icon_view->priv->width = 0;
icon_view->priv->height = 0;
}
icon_view->priv->model = model;
if (icon_view->priv->model)
{
g_object_ref (icon_view->priv->model);
g_signal_connect (icon_view->priv->model,
"row-changed",
G_CALLBACK (gtk_icon_view_row_changed),
icon_view);
g_signal_connect (icon_view->priv->model,
"row-inserted",
G_CALLBACK (gtk_icon_view_row_inserted),
icon_view);
g_signal_connect (icon_view->priv->model,
"row-deleted",
G_CALLBACK (gtk_icon_view_row_deleted),
icon_view);
g_signal_connect (icon_view->priv->model,
"rows-reordered",
G_CALLBACK (gtk_icon_view_rows_reordered),
icon_view);
gtk_icon_view_build_items (icon_view);
}
g_object_notify (G_OBJECT (icon_view), "model");
if (dirty)
g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
gtk_widget_queue_resize (GTK_WIDGET (icon_view));
}
/**
* gtk_icon_view_get_model:
* @icon_view: a #GtkIconView
*
* Returns the model the #GtkIconView is based on. Returns %NULL if the
* model is unset.
*
* Returns: (nullable) (transfer none): A #GtkTreeModel, or %NULL if none is
* currently being used.
**/
GtkTreeModel *
gtk_icon_view_get_model (GtkIconView *icon_view)
{
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), NULL);
return icon_view->priv->model;
}
static void
update_text_cell (GtkIconView *icon_view)
{
if (!icon_view->priv->cell_area)
return;
if (icon_view->priv->text_column == -1 &&
icon_view->priv->markup_column == -1)
{
if (icon_view->priv->text_cell != NULL)
{
gtk_cell_area_remove (icon_view->priv->cell_area,
icon_view->priv->text_cell);
icon_view->priv->text_cell = NULL;
}
}
else
{
if (icon_view->priv->text_cell == NULL)
{
icon_view->priv->text_cell = gtk_cell_renderer_text_new ();
gtk_cell_layout_pack_end (GTK_CELL_LAYOUT (icon_view), icon_view->priv->text_cell, FALSE);
}
if (icon_view->priv->markup_column != -1)
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (icon_view),
icon_view->priv->text_cell,
"markup", icon_view->priv->markup_column,
NULL);
else
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (icon_view),
icon_view->priv->text_cell,
"text", icon_view->priv->text_column,
NULL);
if (icon_view->priv->item_orientation == GTK_ORIENTATION_VERTICAL)
g_object_set (icon_view->priv->text_cell,
"alignment", PANGO_ALIGN_CENTER,
"wrap-mode", PANGO_WRAP_WORD_CHAR,
"xalign", 0.5,
"yalign", 0.0,
NULL);
else
g_object_set (icon_view->priv->text_cell,
"alignment", PANGO_ALIGN_LEFT,
"wrap-mode", PANGO_WRAP_WORD_CHAR,
"xalign", 0.0,
"yalign", 0.5,
NULL);
}
}
static void
update_pixbuf_cell (GtkIconView *icon_view)
{
if (!icon_view->priv->cell_area)
return;
if (icon_view->priv->pixbuf_column == -1)
{
if (icon_view->priv->pixbuf_cell != NULL)
{
gtk_cell_area_remove (icon_view->priv->cell_area,
icon_view->priv->pixbuf_cell);
icon_view->priv->pixbuf_cell = NULL;
}
}
else
{
if (icon_view->priv->pixbuf_cell == NULL)
{
icon_view->priv->pixbuf_cell = gtk_cell_renderer_pixbuf_new ();
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (icon_view), icon_view->priv->pixbuf_cell, FALSE);
}
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (icon_view),
icon_view->priv->pixbuf_cell,
"pixbuf", icon_view->priv->pixbuf_column,
NULL);
if (icon_view->priv->item_orientation == GTK_ORIENTATION_VERTICAL)
g_object_set (icon_view->priv->pixbuf_cell,
"xalign", 0.5,
"yalign", 1.0,
NULL);
else
g_object_set (icon_view->priv->pixbuf_cell,
"xalign", 0.0,
"yalign", 0.0,
NULL);
}
}
/**
* gtk_icon_view_set_text_column:
* @icon_view: A #GtkIconView.
* @column: A column in the currently used model, or -1 to display no text
*
* Sets the column with text for @icon_view to be @column. The text
* column must be of type #G_TYPE_STRING.
**/
void
gtk_icon_view_set_text_column (GtkIconView *icon_view,
gint column)
{
if (column == icon_view->priv->text_column)
return;
if (column == -1)
icon_view->priv->text_column = -1;
else
{
if (icon_view->priv->model != NULL)
{
GType column_type;
column_type = gtk_tree_model_get_column_type (icon_view->priv->model, column);
g_return_if_fail (column_type == G_TYPE_STRING);
}
icon_view->priv->text_column = column;
}
if (icon_view->priv->cell_area)
gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
update_text_cell (icon_view);
gtk_icon_view_invalidate_sizes (icon_view);
g_object_notify (G_OBJECT (icon_view), "text-column");
}
/**
* gtk_icon_view_get_text_column:
* @icon_view: A #GtkIconView.
*
* Returns the column with text for @icon_view.
*
* Returns: the text column, or -1 if it’s unset.
*/
gint
gtk_icon_view_get_text_column (GtkIconView *icon_view)
{
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
return icon_view->priv->text_column;
}
/**
* gtk_icon_view_set_markup_column:
* @icon_view: A #GtkIconView.
* @column: A column in the currently used model, or -1 to display no text
*
* Sets the column with markup information for @icon_view to be
* @column. The markup column must be of type #G_TYPE_STRING.
* If the markup column is set to something, it overrides
* the text column set by gtk_icon_view_set_text_column().
**/
void
gtk_icon_view_set_markup_column (GtkIconView *icon_view,
gint column)
{
if (column == icon_view->priv->markup_column)
return;
if (column == -1)
icon_view->priv->markup_column = -1;
else
{
if (icon_view->priv->model != NULL)
{
GType column_type;
column_type = gtk_tree_model_get_column_type (icon_view->priv->model, column);
g_return_if_fail (column_type == G_TYPE_STRING);
}
icon_view->priv->markup_column = column;
}
if (icon_view->priv->cell_area)
gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
update_text_cell (icon_view);
gtk_icon_view_invalidate_sizes (icon_view);
g_object_notify (G_OBJECT (icon_view), "markup-column");
}
/**
* gtk_icon_view_get_markup_column:
* @icon_view: A #GtkIconView.
*
* Returns the column with markup text for @icon_view.
*
* Returns: the markup column, or -1 if it’s unset.
*/
gint
gtk_icon_view_get_markup_column (GtkIconView *icon_view)
{
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
return icon_view->priv->markup_column;
}
/**
* gtk_icon_view_set_pixbuf_column:
* @icon_view: A #GtkIconView.
* @column: A column in the currently used model, or -1 to disable
*
* Sets the column with pixbufs for @icon_view to be @column. The pixbuf
* column must be of type #GDK_TYPE_PIXBUF
**/
void
gtk_icon_view_set_pixbuf_column (GtkIconView *icon_view,
gint column)
{
if (column == icon_view->priv->pixbuf_column)
return;
if (column == -1)
icon_view->priv->pixbuf_column = -1;
else
{
if (icon_view->priv->model != NULL)
{
GType column_type;
column_type = gtk_tree_model_get_column_type (icon_view->priv->model, column);
g_return_if_fail (column_type == GDK_TYPE_PIXBUF);
}
icon_view->priv->pixbuf_column = column;
}
if (icon_view->priv->cell_area)
gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
update_pixbuf_cell (icon_view);
gtk_icon_view_invalidate_sizes (icon_view);
g_object_notify (G_OBJECT (icon_view), "pixbuf-column");
}
/**
* gtk_icon_view_get_pixbuf_column:
* @icon_view: A #GtkIconView.
*
* Returns the column with pixbufs for @icon_view.
*
* Returns: the pixbuf column, or -1 if it’s unset.
*/
gint
gtk_icon_view_get_pixbuf_column (GtkIconView *icon_view)
{
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
return icon_view->priv->pixbuf_column;
}
/**
* gtk_icon_view_select_path:
* @icon_view: A #GtkIconView.
* @path: The #GtkTreePath to be selected.
*
* Selects the row at @path.
**/
void
gtk_icon_view_select_path (GtkIconView *icon_view,
GtkTreePath *path)
{
GtkIconViewItem *item = NULL;
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
g_return_if_fail (icon_view->priv->model != NULL);
g_return_if_fail (path != NULL);
if (gtk_tree_path_get_depth (path) > 0)
item = g_list_nth_data (icon_view->priv->items,
gtk_tree_path_get_indices(path)[0]);
if (item)
_gtk_icon_view_select_item (icon_view, item);
}
/**
* gtk_icon_view_unselect_path:
* @icon_view: A #GtkIconView.
* @path: The #GtkTreePath to be unselected.
*
* Unselects the row at @path.
**/
void
gtk_icon_view_unselect_path (GtkIconView *icon_view,
GtkTreePath *path)
{
GtkIconViewItem *item;
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
g_return_if_fail (icon_view->priv->model != NULL);
g_return_if_fail (path != NULL);
item = g_list_nth_data (icon_view->priv->items,
gtk_tree_path_get_indices(path)[0]);
if (!item)
return;
_gtk_icon_view_unselect_item (icon_view, item);
}
/**
* gtk_icon_view_get_selected_items:
* @icon_view: A #GtkIconView.
*
* Creates a list of paths of all selected items. Additionally, if you are
* planning on modifying the model after calling this function, you may
* want to convert the returned list into a list of #GtkTreeRowReferences.
* To do this, you can use gtk_tree_row_reference_new().
*
* To free the return value, use:
* |[<!-- language="C" -->
* g_list_free_full (list, (GDestroyNotify) gtk_tree_path_free);
* ]|
*
* Returns: (element-type GtkTreePath) (transfer full): A #GList containing a #GtkTreePath for each selected row.
**/
GList *
gtk_icon_view_get_selected_items (GtkIconView *icon_view)
{
GList *list;
GList *selected = NULL;
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), NULL);
for (list = icon_view->priv->items; list != NULL; list = list->next)
{
GtkIconViewItem *item = list->data;
if (item->selected)
{
GtkTreePath *path = gtk_tree_path_new_from_indices (item->index, -1);
selected = g_list_prepend (selected, path);
}
}
return selected;
}
/**
* gtk_icon_view_select_all:
* @icon_view: A #GtkIconView.
*
* Selects all the icons. @icon_view must has its selection mode set
* to #GTK_SELECTION_MULTIPLE.
**/
void
gtk_icon_view_select_all (GtkIconView *icon_view)
{
GList *items;
gboolean dirty = FALSE;
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
if (icon_view->priv->selection_mode != GTK_SELECTION_MULTIPLE)
return;
for (items = icon_view->priv->items; items; items = items->next)
{
GtkIconViewItem *item = items->data;
if (!item->selected)
{
dirty = TRUE;
item->selected = TRUE;
gtk_icon_view_queue_draw_item (icon_view, item);
}
}
if (dirty)
g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
}
/**
* gtk_icon_view_unselect_all:
* @icon_view: A #GtkIconView.
*
* Unselects all the icons.
**/
void
gtk_icon_view_unselect_all (GtkIconView *icon_view)
{
gboolean dirty = FALSE;
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
if (icon_view->priv->selection_mode == GTK_SELECTION_BROWSE)
return;
dirty = gtk_icon_view_unselect_all_internal (icon_view);
if (dirty)
g_signal_emit (icon_view, icon_view_signals[SELECTION_CHANGED], 0);
}
/**
* gtk_icon_view_path_is_selected:
* @icon_view: A #GtkIconView.
* @path: A #GtkTreePath to check selection on.
*
* Returns %TRUE if the icon pointed to by @path is currently
* selected. If @path does not point to a valid location, %FALSE is returned.
*
* Returns: %TRUE if @path is selected.
**/
gboolean
gtk_icon_view_path_is_selected (GtkIconView *icon_view,
GtkTreePath *path)
{
GtkIconViewItem *item;
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
g_return_val_if_fail (icon_view->priv->model != NULL, FALSE);
g_return_val_if_fail (path != NULL, FALSE);
item = g_list_nth_data (icon_view->priv->items,
gtk_tree_path_get_indices(path)[0]);
if (!item)
return FALSE;
return item->selected;
}
/**
* gtk_icon_view_get_item_row:
* @icon_view: a #GtkIconView
* @path: the #GtkTreePath of the item
*
* Gets the row in which the item @path is currently
* displayed. Row numbers start at 0.
*
* Returns: The row in which the item is displayed
*/
gint
gtk_icon_view_get_item_row (GtkIconView *icon_view,
GtkTreePath *path)
{
GtkIconViewItem *item;
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
g_return_val_if_fail (icon_view->priv->model != NULL, -1);
g_return_val_if_fail (path != NULL, -1);
item = g_list_nth_data (icon_view->priv->items,
gtk_tree_path_get_indices(path)[0]);
if (!item)
return -1;
return item->row;
}
/**
* gtk_icon_view_get_item_column:
* @icon_view: a #GtkIconView
* @path: the #GtkTreePath of the item
*
* Gets the column in which the item @path is currently
* displayed. Column numbers start at 0.
*
* Returns: The column in which the item is displayed
*/
gint
gtk_icon_view_get_item_column (GtkIconView *icon_view,
GtkTreePath *path)
{
GtkIconViewItem *item;
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
g_return_val_if_fail (icon_view->priv->model != NULL, -1);
g_return_val_if_fail (path != NULL, -1);
item = g_list_nth_data (icon_view->priv->items,
gtk_tree_path_get_indices(path)[0]);
if (!item)
return -1;
return item->col;
}
/**
* gtk_icon_view_item_activated:
* @icon_view: A #GtkIconView
* @path: The #GtkTreePath to be activated
*
* Activates the item determined by @path.
**/
void
gtk_icon_view_item_activated (GtkIconView *icon_view,
GtkTreePath *path)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
g_return_if_fail (path != NULL);
g_signal_emit (icon_view, icon_view_signals[ITEM_ACTIVATED], 0, path);
}
/**
* gtk_icon_view_set_item_orientation:
* @icon_view: a #GtkIconView
* @orientation: the relative position of texts and icons
*
* Sets the ::item-orientation property which determines whether the labels
* are drawn beside the icons instead of below.
**/
void
gtk_icon_view_set_item_orientation (GtkIconView *icon_view,
GtkOrientation orientation)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
if (icon_view->priv->item_orientation != orientation)
{
icon_view->priv->item_orientation = orientation;
if (icon_view->priv->cell_area)
{
if (GTK_IS_ORIENTABLE (icon_view->priv->cell_area))
gtk_orientable_set_orientation (GTK_ORIENTABLE (icon_view->priv->cell_area),
icon_view->priv->item_orientation);
gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
}
gtk_icon_view_invalidate_sizes (icon_view);
update_text_cell (icon_view);
update_pixbuf_cell (icon_view);
g_object_notify (G_OBJECT (icon_view), "item-orientation");
}
}
/**
* gtk_icon_view_get_item_orientation:
* @icon_view: a #GtkIconView
*
* Returns the value of the ::item-orientation property which determines
* whether the labels are drawn beside the icons instead of below.
*
* Returns: the relative position of texts and icons
**/
GtkOrientation
gtk_icon_view_get_item_orientation (GtkIconView *icon_view)
{
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view),
GTK_ORIENTATION_VERTICAL);
return icon_view->priv->item_orientation;
}
/**
* gtk_icon_view_set_columns:
* @icon_view: a #GtkIconView
* @columns: the number of columns
*
* Sets the ::columns property which determines in how
* many columns the icons are arranged. If @columns is
* -1, the number of columns will be chosen automatically
* to fill the available area.
*/
void
gtk_icon_view_set_columns (GtkIconView *icon_view,
gint columns)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
if (icon_view->priv->columns != columns)
{
icon_view->priv->columns = columns;
if (icon_view->priv->cell_area)
gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
gtk_widget_queue_resize (GTK_WIDGET (icon_view));
g_object_notify (G_OBJECT (icon_view), "columns");
}
}
/**
* gtk_icon_view_get_columns:
* @icon_view: a #GtkIconView
*
* Returns the value of the ::columns property.
*
* Returns: the number of columns, or -1
*/
gint
gtk_icon_view_get_columns (GtkIconView *icon_view)
{
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
return icon_view->priv->columns;
}
/**
* gtk_icon_view_set_item_width:
* @icon_view: a #GtkIconView
* @item_width: the width for each item
*
* Sets the ::item-width property which specifies the width
* to use for each item. If it is set to -1, the icon view will
* automatically determine a suitable item size.
*/
void
gtk_icon_view_set_item_width (GtkIconView *icon_view,
gint item_width)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
if (icon_view->priv->item_width != item_width)
{
icon_view->priv->item_width = item_width;
if (icon_view->priv->cell_area)
gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
gtk_icon_view_invalidate_sizes (icon_view);
update_text_cell (icon_view);
g_object_notify (G_OBJECT (icon_view), "item-width");
}
}
/**
* gtk_icon_view_get_item_width:
* @icon_view: a #GtkIconView
*
* Returns the value of the ::item-width property.
*
* Returns: the width of a single item, or -1
*/
gint
gtk_icon_view_get_item_width (GtkIconView *icon_view)
{
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
return icon_view->priv->item_width;
}
/**
* gtk_icon_view_set_spacing:
* @icon_view: a #GtkIconView
* @spacing: the spacing
*
* Sets the ::spacing property which specifies the space
* which is inserted between the cells (i.e. the icon and
* the text) of an item.
*/
void
gtk_icon_view_set_spacing (GtkIconView *icon_view,
gint spacing)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
if (icon_view->priv->spacing != spacing)
{
icon_view->priv->spacing = spacing;
if (icon_view->priv->cell_area)
gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
gtk_icon_view_invalidate_sizes (icon_view);
g_object_notify (G_OBJECT (icon_view), "spacing");
}
}
/**
* gtk_icon_view_get_spacing:
* @icon_view: a #GtkIconView
*
* Returns the value of the ::spacing property.
*
* Returns: the space between cells
*/
gint
gtk_icon_view_get_spacing (GtkIconView *icon_view)
{
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
return icon_view->priv->spacing;
}
/**
* gtk_icon_view_set_row_spacing:
* @icon_view: a #GtkIconView
* @row_spacing: the row spacing
*
* Sets the ::row-spacing property which specifies the space
* which is inserted between the rows of the icon view.
*/
void
gtk_icon_view_set_row_spacing (GtkIconView *icon_view,
gint row_spacing)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
if (icon_view->priv->row_spacing != row_spacing)
{
icon_view->priv->row_spacing = row_spacing;
if (icon_view->priv->cell_area)
gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
gtk_icon_view_invalidate_sizes (icon_view);
g_object_notify (G_OBJECT (icon_view), "row-spacing");
}
}
/**
* gtk_icon_view_get_row_spacing:
* @icon_view: a #GtkIconView
*
* Returns the value of the ::row-spacing property.
*
* Returns: the space between rows
*/
gint
gtk_icon_view_get_row_spacing (GtkIconView *icon_view)
{
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
return icon_view->priv->row_spacing;
}
/**
* gtk_icon_view_set_column_spacing:
* @icon_view: a #GtkIconView
* @column_spacing: the column spacing
*
* Sets the ::column-spacing property which specifies the space
* which is inserted between the columns of the icon view.
*/
void
gtk_icon_view_set_column_spacing (GtkIconView *icon_view,
gint column_spacing)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
if (icon_view->priv->column_spacing != column_spacing)
{
icon_view->priv->column_spacing = column_spacing;
if (icon_view->priv->cell_area)
gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
gtk_icon_view_invalidate_sizes (icon_view);
g_object_notify (G_OBJECT (icon_view), "column-spacing");
}
}
/**
* gtk_icon_view_get_column_spacing:
* @icon_view: a #GtkIconView
*
* Returns the value of the ::column-spacing property.
*
* Returns: the space between columns
*/
gint
gtk_icon_view_get_column_spacing (GtkIconView *icon_view)
{
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
return icon_view->priv->column_spacing;
}
/**
* gtk_icon_view_set_margin:
* @icon_view: a #GtkIconView
* @margin: the margin
*
* Sets the ::margin property which specifies the space
* which is inserted at the top, bottom, left and right
* of the icon view.
*/
void
gtk_icon_view_set_margin (GtkIconView *icon_view,
gint margin)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
if (icon_view->priv->margin != margin)
{
icon_view->priv->margin = margin;
if (icon_view->priv->cell_area)
gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
gtk_icon_view_invalidate_sizes (icon_view);
g_object_notify (G_OBJECT (icon_view), "margin");
}
}
/**
* gtk_icon_view_get_margin:
* @icon_view: a #GtkIconView
*
* Returns the value of the ::margin property.
*
* Returns: the space at the borders
*/
gint
gtk_icon_view_get_margin (GtkIconView *icon_view)
{
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
return icon_view->priv->margin;
}
/**
* gtk_icon_view_set_item_padding:
* @icon_view: a #GtkIconView
* @item_padding: the item padding
*
* Sets the #GtkIconView:item-padding property which specifies the padding
* around each of the icon view’s items.
*/
void
gtk_icon_view_set_item_padding (GtkIconView *icon_view,
gint item_padding)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
if (icon_view->priv->item_padding != item_padding)
{
icon_view->priv->item_padding = item_padding;
if (icon_view->priv->cell_area)
gtk_cell_area_stop_editing (icon_view->priv->cell_area, TRUE);
gtk_icon_view_invalidate_sizes (icon_view);
g_object_notify (G_OBJECT (icon_view), "item-padding");
}
}
/**
* gtk_icon_view_get_item_padding:
* @icon_view: a #GtkIconView
*
* Returns the value of the ::item-padding property.
*
* Returns: the padding around items
*/
gint
gtk_icon_view_get_item_padding (GtkIconView *icon_view)
{
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), -1);
return icon_view->priv->item_padding;
}
/* Get/set whether drag_motion requested the drag data and
* drag_data_received should thus not actually insert the data,
* since the data doesn’t result from a drop.
*/
static void
set_status_pending (GdkDragContext *context,
GdkDragAction suggested_action)
{
g_object_set_data (G_OBJECT (context),
I_("gtk-icon-view-status-pending"),
GINT_TO_POINTER (suggested_action));
}
static GdkDragAction
get_status_pending (GdkDragContext *context)
{
return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
"gtk-icon-view-status-pending"));
}
static void
unset_reorderable (GtkIconView *icon_view)
{
if (icon_view->priv->reorderable)
{
icon_view->priv->reorderable = FALSE;
g_object_notify (G_OBJECT (icon_view), "reorderable");
}
}
static void
set_source_row (GdkDragContext *context,
GtkTreeModel *model,
GtkTreePath *source_row)
{
if (source_row)
g_object_set_data_full (G_OBJECT (context),
I_("gtk-icon-view-source-row"),
gtk_tree_row_reference_new (model, source_row),
(GDestroyNotify) gtk_tree_row_reference_free);
else
g_object_set_data_full (G_OBJECT (context),
I_("gtk-icon-view-source-row"),
NULL, NULL);
}
static GtkTreePath*
get_source_row (GdkDragContext *context)
{
GtkTreeRowReference *ref;
ref = g_object_get_data (G_OBJECT (context), "gtk-icon-view-source-row");
if (ref)
return gtk_tree_row_reference_get_path (ref);
else
return NULL;
}
typedef struct
{
GtkTreeRowReference *dest_row;
gboolean empty_view_drop;
gboolean drop_append_mode;
} DestRow;
static void
dest_row_free (gpointer data)
{
DestRow *dr = (DestRow *)data;
gtk_tree_row_reference_free (dr->dest_row);
g_free (dr);
}
static void
set_dest_row (GdkDragContext *context,
GtkTreeModel *model,
GtkTreePath *dest_row,
gboolean empty_view_drop,
gboolean drop_append_mode)
{
DestRow *dr;
if (!dest_row)
{
g_object_set_data_full (G_OBJECT (context),
I_("gtk-icon-view-dest-row"),
NULL, NULL);
return;
}
dr = g_new0 (DestRow, 1);
dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
dr->empty_view_drop = empty_view_drop;
dr->drop_append_mode = drop_append_mode;
g_object_set_data_full (G_OBJECT (context),
I_("gtk-icon-view-dest-row"),
dr, (GDestroyNotify) dest_row_free);
}
static GtkTreePath*
get_dest_row (GdkDragContext *context)
{
DestRow *dr;
dr = g_object_get_data (G_OBJECT (context), "gtk-icon-view-dest-row");
if (dr)
{
GtkTreePath *path = NULL;
if (dr->dest_row)
path = gtk_tree_row_reference_get_path (dr->dest_row);
else if (dr->empty_view_drop)
path = gtk_tree_path_new_from_indices (0, -1);
else
path = NULL;
if (path && dr->drop_append_mode)
gtk_tree_path_next (path);
return path;
}
else
return NULL;
}
static gboolean
check_model_dnd (GtkTreeModel *model,
GType required_iface,
const gchar *signal)
{
if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
{
g_warning ("You must override the default '%s' handler "
"on GtkIconView when using models that don't support "
"the %s interface and enabling drag-and-drop. The simplest way to do this "
"is to connect to '%s' and call "
"g_signal_stop_emission_by_name() in your signal handler to prevent "
"the default handler from running. Look at the source code "
"for the default handler in gtkiconview.c to get an idea what "
"your handler should do. (gtkiconview.c is in the GTK+ source "
"code.) If you're using GTK+ from a language other than C, "
"there may be a more natural way to override default handlers, e.g. via derivation.",
signal, g_type_name (required_iface), signal);
return FALSE;
}
else
return TRUE;
}
static void
remove_scroll_timeout (GtkIconView *icon_view)
{
if (icon_view->priv->scroll_timeout_id != 0)
{
g_source_remove (icon_view->priv->scroll_timeout_id);
icon_view->priv->scroll_timeout_id = 0;
}
}
static void
gtk_icon_view_autoscroll (GtkIconView *icon_view)
{
gint px, py, width, height;
gint hoffset, voffset;
px = icon_view->priv->event_last_x;
py = icon_view->priv->event_last_y;
width = gtk_widget_get_width (GTK_WIDGET (icon_view));
height = gtk_widget_get_height (GTK_WIDGET (icon_view));
/* see if we are near the edge. */
voffset = py - 2 * SCROLL_EDGE_SIZE;
if (voffset > 0)
voffset = MAX (py - (height - 2 * SCROLL_EDGE_SIZE), 0);
hoffset = px - 2 * SCROLL_EDGE_SIZE;
if (hoffset > 0)
hoffset = MAX (px - (width - 2 * SCROLL_EDGE_SIZE), 0);
if (voffset != 0)
gtk_adjustment_set_value (icon_view->priv->vadjustment,
gtk_adjustment_get_value (icon_view->priv->vadjustment) + voffset);
if (hoffset != 0)
gtk_adjustment_set_value (icon_view->priv->hadjustment,
gtk_adjustment_get_value (icon_view->priv->hadjustment) + hoffset);
}
static gboolean
drag_scroll_timeout (gpointer data)
{
gtk_icon_view_autoscroll (data);
return TRUE;
}
static gboolean
set_destination (GtkIconView *icon_view,
GdkDragContext *context,
gint x,
gint y,
GdkDragAction *suggested_action,
GdkAtom *target)
{
GtkWidget *widget;
GtkTreePath *path = NULL;
GtkIconViewDropPosition pos;
GtkIconViewDropPosition old_pos;
GtkTreePath *old_dest_path = NULL;
gboolean can_drop = FALSE;
widget = GTK_WIDGET (icon_view);
*suggested_action = 0;
*target = NULL;
if (!icon_view->priv->dest_set)
{
/* someone unset us as a drag dest, note that if
* we return FALSE drag_leave isn't called
*/
gtk_icon_view_set_drag_dest_item (icon_view,
NULL,
GTK_ICON_VIEW_DROP_LEFT);
remove_scroll_timeout (GTK_ICON_VIEW (widget));
return FALSE; /* no longer a drop site */
}
*target = gtk_drag_dest_find_target (widget, context,
gtk_drag_dest_get_target_list (widget));
if (*target == NULL)
return FALSE;
if (!gtk_icon_view_get_dest_item_at_pos (icon_view, x, y, &path, &pos))
{
gint n_children;
GtkTreeModel *model;
/* the row got dropped on empty space, let's setup a special case
*/
if (path)
gtk_tree_path_free (path);
model = gtk_icon_view_get_model (icon_view);
n_children = gtk_tree_model_iter_n_children (model, NULL);
if (n_children)
{
pos = GTK_ICON_VIEW_DROP_BELOW;
path = gtk_tree_path_new_from_indices (n_children - 1, -1);
}
else
{
pos = GTK_ICON_VIEW_DROP_ABOVE;
path = gtk_tree_path_new_from_indices (0, -1);
}
can_drop = TRUE;
goto out;
}
g_assert (path);
gtk_icon_view_get_drag_dest_item (icon_view,
&old_dest_path,
&old_pos);
if (old_dest_path)
gtk_tree_path_free (old_dest_path);
if (TRUE /* FIXME if the location droppable predicate */)
{
can_drop = TRUE;
}
out:
if (can_drop)
{
GtkWidget *source_widget;
*suggested_action = gdk_drag_context_get_suggested_action (context);
source_widget = gtk_drag_get_source_widget (context);
if (source_widget == widget)
{
/* Default to MOVE, unless the user has
* pressed ctrl or shift to affect available actions
*/
if ((gdk_drag_context_get_actions (context) & GDK_ACTION_MOVE) != 0)
*suggested_action = GDK_ACTION_MOVE;
}
gtk_icon_view_set_drag_dest_item (GTK_ICON_VIEW (widget),
path, pos);
}
else
{
/* can't drop here */
gtk_icon_view_set_drag_dest_item (GTK_ICON_VIEW (widget),
NULL,
GTK_ICON_VIEW_DROP_LEFT);
}
if (path)
gtk_tree_path_free (path);
return TRUE;
}
static GtkTreePath*
get_logical_destination (GtkIconView *icon_view,
gboolean *drop_append_mode)
{
/* adjust path to point to the row the drop goes in front of */
GtkTreePath *path = NULL;
GtkIconViewDropPosition pos;
*drop_append_mode = FALSE;
gtk_icon_view_get_drag_dest_item (icon_view, &path, &pos);
if (path == NULL)
return NULL;
if (pos == GTK_ICON_VIEW_DROP_RIGHT ||
pos == GTK_ICON_VIEW_DROP_BELOW)
{
GtkTreeIter iter;
GtkTreeModel *model = icon_view->priv->model;
if (!gtk_tree_model_get_iter (model, &iter, path) ||
!gtk_tree_model_iter_next (model, &iter))
*drop_append_mode = TRUE;
else
{
*drop_append_mode = FALSE;
gtk_tree_path_next (path);
}
}
return path;
}
static gboolean
gtk_icon_view_maybe_begin_drag (GtkIconView *icon_view,
double x,
double y,
GdkDevice *device)
{
GtkWidget *widget = GTK_WIDGET (icon_view);
GdkDragContext *context;
GtkTreePath *path = NULL;
GtkTreeModel *model;
gboolean retval = FALSE;
if (!icon_view->priv->source_set)
goto out;
if (icon_view->priv->pressed_button < 0)
goto out;
if (!gtk_drag_check_threshold (GTK_WIDGET (icon_view),
icon_view->priv->press_start_x,
icon_view->priv->press_start_y,
x, y))
goto out;
model = gtk_icon_view_get_model (icon_view);
if (model == NULL)
goto out;
icon_view->priv->pressed_button = -1;
path = gtk_icon_view_get_path_at_pos (icon_view,
icon_view->priv->press_start_x,
icon_view->priv->press_start_y);
if (path == NULL)
goto out;
if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
!gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
path))
goto out;
/* FIXME Check whether we're a start button, if not return FALSE and
* free path
*/
/* Now we can begin the drag */
retval = TRUE;
context = gtk_drag_begin_with_coordinates (widget,
device,
gtk_drag_source_get_target_list (widget),
icon_view->priv->source_actions,
icon_view->priv->press_start_x,
icon_view->priv->press_start_y);
set_source_row (context, model, path);
out:
if (path)
gtk_tree_path_free (path);
return retval;
}
/* Source side drag signals */
static void
gtk_icon_view_drag_begin (GtkWidget *widget,
GdkDragContext *context)
{
GtkIconView *icon_view;
GtkIconViewItem *item;
GdkPaintable *icon;
gint x, y;
GtkTreePath *path;
icon_view = GTK_ICON_VIEW (widget);
/* if the user uses a custom DnD impl, we don't set the icon here */
if (!icon_view->priv->dest_set && !icon_view->priv->source_set)
return;
item = _gtk_icon_view_get_item_at_coords (icon_view,
icon_view->priv->press_start_x,
icon_view->priv->press_start_y,
TRUE,
NULL);
g_return_if_fail (item != NULL);
x = icon_view->priv->press_start_x - item->cell_area.x + icon_view->priv->item_padding;
y = icon_view->priv->press_start_y - item->cell_area.y + icon_view->priv->item_padding;
path = gtk_tree_path_new_from_indices (item->index, -1);
icon = gtk_icon_view_create_drag_icon (icon_view, path);
gtk_tree_path_free (path);
gtk_drag_set_icon_paintable (context, icon, x, y);
g_object_unref (icon);
}
static void
gtk_icon_view_drag_end (GtkWidget *widget,
GdkDragContext *context)
{
/* do nothing */
}
static void
gtk_icon_view_drag_data_get (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint time)
{
GtkIconView *icon_view;
GtkTreeModel *model;
GtkTreePath *source_row;
icon_view = GTK_ICON_VIEW (widget);
model = gtk_icon_view_get_model (icon_view);
if (model == NULL)
return;
if (!icon_view->priv->source_set)
return;
source_row = get_source_row (context);
if (source_row == NULL)
return;
/* We can implement the GTK_TREE_MODEL_ROW target generically for
* any model; for DragSource models there are some other formats
* we also support.
*/
if (GTK_IS_TREE_DRAG_SOURCE (model) &&
gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
source_row,
selection_data))
goto done;
/* If drag_data_get does nothing, try providing row data. */
if (gtk_selection_data_get_target (selection_data) == g_intern_static_string ("GTK_TREE_MODEL_ROW"))
gtk_tree_set_row_drag_data (selection_data,
model,
source_row);
done:
gtk_tree_path_free (source_row);
}
static void
gtk_icon_view_drag_data_delete (GtkWidget *widget,
GdkDragContext *context)
{
GtkTreeModel *model;
GtkIconView *icon_view;
GtkTreePath *source_row;
icon_view = GTK_ICON_VIEW (widget);
model = gtk_icon_view_get_model (icon_view);
if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag-data-delete"))
return;
if (!icon_view->priv->source_set)
return;
source_row = get_source_row (context);
if (source_row == NULL)
return;
gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
source_row);
gtk_tree_path_free (source_row);
set_source_row (context, NULL, NULL);
}
/* Target side drag signals */
static void
gtk_icon_view_drag_leave (GtkWidget *widget,
GdkDragContext *context,
guint time)
{
GtkIconView *icon_view;
icon_view = GTK_ICON_VIEW (widget);
/* unset any highlight row */
gtk_icon_view_set_drag_dest_item (icon_view,
NULL,
GTK_ICON_VIEW_DROP_LEFT);
remove_scroll_timeout (icon_view);
}
static gboolean
gtk_icon_view_drag_motion (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
GtkTreePath *path = NULL;
GtkIconViewDropPosition pos;
GtkIconView *icon_view;
GdkDragAction suggested_action = 0;
GdkAtom target;
gboolean empty;
icon_view = GTK_ICON_VIEW (widget);
if (!set_destination (icon_view, context, x, y, &suggested_action, &target))
return FALSE;
icon_view->priv->event_last_x = x;
icon_view->priv->event_last_y = y;
gtk_icon_view_get_drag_dest_item (icon_view, &path, &pos);
/* we only know this *after* set_desination_row */
empty = icon_view->priv->empty_view_drop;
if (path == NULL && !empty)
{
/* Can't drop here. */
gdk_drag_status (context, 0, time);
}
else
{
if (icon_view->priv->scroll_timeout_id == 0)
{
icon_view->priv->scroll_timeout_id = g_timeout_add (50, drag_scroll_timeout, icon_view);
g_source_set_name_by_id (icon_view->priv->scroll_timeout_id, "[gtk+] drag_scroll_timeout");
}
if (target == g_intern_static_string ("GTK_TREE_MODEL_ROW"))
{
/* Request data so we can use the source row when
* determining whether to accept the drop
*/
set_status_pending (context, suggested_action);
gtk_drag_get_data (widget, context, target, time);
}
else
{
set_status_pending (context, 0);
gdk_drag_status (context, suggested_action, time);
}
}
if (path)
gtk_tree_path_free (path);
return TRUE;
}
static gboolean
gtk_icon_view_drag_drop (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
GtkIconView *icon_view;
GtkTreePath *path;
GdkDragAction suggested_action = 0;
GdkAtom target = NULL;
GtkTreeModel *model;
gboolean drop_append_mode;
icon_view = GTK_ICON_VIEW (widget);
model = gtk_icon_view_get_model (icon_view);
remove_scroll_timeout (GTK_ICON_VIEW (widget));
if (!icon_view->priv->dest_set)
return FALSE;
if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag-drop"))
return FALSE;
if (!set_destination (icon_view, context, x, y, &suggested_action, &target))
return FALSE;
path = get_logical_destination (icon_view, &drop_append_mode);
if (target != NULL && path != NULL)
{
/* in case a motion had requested drag data, change things so we
* treat drag data receives as a drop.
*/
set_status_pending (context, 0);
set_dest_row (context, model, path,
icon_view->priv->empty_view_drop, drop_append_mode);
}
if (path)
gtk_tree_path_free (path);
/* Unset this thing */
gtk_icon_view_set_drag_dest_item (icon_view, NULL, GTK_ICON_VIEW_DROP_LEFT);
if (target != NULL)
{
gtk_drag_get_data (widget, context, target, time);
return TRUE;
}
else
return FALSE;
}
static void
gtk_icon_view_drag_data_received (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint time)
{
GtkTreePath *path;
gboolean accepted = FALSE;
GtkTreeModel *model;
GtkIconView *icon_view;
GtkTreePath *dest_row;
GdkDragAction suggested_action;
gboolean drop_append_mode;
icon_view = GTK_ICON_VIEW (widget);
model = gtk_icon_view_get_model (icon_view);
if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag-data-received"))
return;
if (!icon_view->priv->dest_set)
return;
suggested_action = get_status_pending (context);
if (suggested_action)
{
/* We are getting this data due to a request in drag_motion,
* rather than due to a request in drag_drop, so we are just
* supposed to call drag_status, not actually paste in the
* data.
*/
path = get_logical_destination (icon_view, &drop_append_mode);
if (path == NULL)
suggested_action = 0;
if (suggested_action)
{
if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
path,
selection_data))
suggested_action = 0;
}
gdk_drag_status (context, suggested_action, time);
if (path)
gtk_tree_path_free (path);
/* If you can't drop, remove user drop indicator until the next motion */
if (suggested_action == 0)
gtk_icon_view_set_drag_dest_item (icon_view,
NULL,
GTK_ICON_VIEW_DROP_LEFT);
return;
}
dest_row = get_dest_row (context);
if (dest_row == NULL)
return;
if (gtk_selection_data_get_length (selection_data) >= 0)
{
if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
dest_row,
selection_data))
accepted = TRUE;
}
gtk_drag_finish (context,
accepted,
time);
gtk_tree_path_free (dest_row);
/* drop dest_row */
set_dest_row (context, NULL, NULL, FALSE, FALSE);
}
/* Drag-and-Drop support */
/**
* gtk_icon_view_enable_model_drag_source:
* @icon_view: a #GtkIconView
* @start_button_mask: Mask of allowed buttons to start drag
* @formats: the formats that the drag will support
* @actions: the bitmask of possible actions for a drag from this
* widget
*
* Turns @icon_view into a drag source for automatic DND. Calling this
* method sets #GtkIconView:reorderable to %FALSE.
**/
void
gtk_icon_view_enable_model_drag_source (GtkIconView *icon_view,
GdkModifierType start_button_mask,
GdkContentFormats *formats,
GdkDragAction actions)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
gtk_drag_source_set (GTK_WIDGET (icon_view), 0, formats, actions);
icon_view->priv->start_button_mask = start_button_mask;
icon_view->priv->source_actions = actions;
icon_view->priv->source_set = TRUE;
unset_reorderable (icon_view);
}
/**
* gtk_icon_view_enable_model_drag_dest:
* @icon_view: a #GtkIconView
* @formats: the formats that the drag will support
* @actions: the bitmask of possible actions for a drag to this
* widget
*
* Turns @icon_view into a drop destination for automatic DND. Calling this
* method sets #GtkIconView:reorderable to %FALSE.
**/
void
gtk_icon_view_enable_model_drag_dest (GtkIconView *icon_view,
GdkContentFormats *formats,
GdkDragAction actions)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
gtk_drag_dest_set (GTK_WIDGET (icon_view), 0, formats, actions);
icon_view->priv->dest_actions = actions;
icon_view->priv->dest_set = TRUE;
unset_reorderable (icon_view);
}
/**
* gtk_icon_view_unset_model_drag_source:
* @icon_view: a #GtkIconView
*
* Undoes the effect of gtk_icon_view_enable_model_drag_source(). Calling this
* method sets #GtkIconView:reorderable to %FALSE.
**/
void
gtk_icon_view_unset_model_drag_source (GtkIconView *icon_view)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
if (icon_view->priv->source_set)
{
gtk_drag_source_unset (GTK_WIDGET (icon_view));
icon_view->priv->source_set = FALSE;
}
unset_reorderable (icon_view);
}
/**
* gtk_icon_view_unset_model_drag_dest:
* @icon_view: a #GtkIconView
*
* Undoes the effect of gtk_icon_view_enable_model_drag_dest(). Calling this
* method sets #GtkIconView:reorderable to %FALSE.
**/
void
gtk_icon_view_unset_model_drag_dest (GtkIconView *icon_view)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
if (icon_view->priv->dest_set)
{
gtk_drag_dest_unset (GTK_WIDGET (icon_view));
icon_view->priv->dest_set = FALSE;
}
unset_reorderable (icon_view);
}
/* These are useful to implement your own custom stuff. */
/**
* gtk_icon_view_set_drag_dest_item:
* @icon_view: a #GtkIconView
* @path: (allow-none): The path of the item to highlight, or %NULL.
* @pos: Specifies where to drop, relative to the item
*
* Sets the item that is highlighted for feedback.
*/
void
gtk_icon_view_set_drag_dest_item (GtkIconView *icon_view,
GtkTreePath *path,
GtkIconViewDropPosition pos)
{
/* Note; this function is exported to allow a custom DND
* implementation, so it can't touch TreeViewDragInfo
*/
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
if (icon_view->priv->dest_item)
{
GtkTreePath *current_path;
current_path = gtk_tree_row_reference_get_path (icon_view->priv->dest_item);
gtk_tree_row_reference_free (icon_view->priv->dest_item);
icon_view->priv->dest_item = NULL;
gtk_icon_view_queue_draw_path (icon_view, current_path);
gtk_tree_path_free (current_path);
}
/* special case a drop on an empty model */
icon_view->priv->empty_view_drop = FALSE;
if (pos == GTK_ICON_VIEW_DROP_ABOVE && path
&& gtk_tree_path_get_depth (path) == 1
&& gtk_tree_path_get_indices (path)[0] == 0)
{
gint n_children;
n_children = gtk_tree_model_iter_n_children (icon_view->priv->model,
NULL);
if (n_children == 0)
icon_view->priv->empty_view_drop = TRUE;
}
icon_view->priv->dest_pos = pos;
if (path)
{
icon_view->priv->dest_item =
gtk_tree_row_reference_new_proxy (G_OBJECT (icon_view),
icon_view->priv->model, path);
gtk_icon_view_queue_draw_path (icon_view, path);
}
}
/**
* gtk_icon_view_get_drag_dest_item:
* @icon_view: a #GtkIconView
* @path: (out) (allow-none): Return location for the path of
* the highlighted item, or %NULL.
* @pos: (out) (allow-none): Return location for the drop position, or %NULL
*
* Gets information about the item that is highlighted for feedback.
**/
void
gtk_icon_view_get_drag_dest_item (GtkIconView *icon_view,
GtkTreePath **path,
GtkIconViewDropPosition *pos)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
if (path)
{
if (icon_view->priv->dest_item)
*path = gtk_tree_row_reference_get_path (icon_view->priv->dest_item);
else
*path = NULL;
}
if (pos)
*pos = icon_view->priv->dest_pos;
}
/**
* gtk_icon_view_get_dest_item_at_pos:
* @icon_view: a #GtkIconView
* @drag_x: the position to determine the destination item for
* @drag_y: the position to determine the destination item for
* @path: (out) (allow-none): Return location for the path of the item,
* or %NULL.
* @pos: (out) (allow-none): Return location for the drop position, or %NULL
*
* Determines the destination item for a given position.
*
* Returns: whether there is an item at the given position.
**/
gboolean
gtk_icon_view_get_dest_item_at_pos (GtkIconView *icon_view,
gint drag_x,
gint drag_y,
GtkTreePath **path,
GtkIconViewDropPosition *pos)
{
GtkIconViewItem *item;
/* Note; this function is exported to allow a custom DND
* implementation, so it can't touch TreeViewDragInfo
*/
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
g_return_val_if_fail (drag_x >= 0, FALSE);
g_return_val_if_fail (drag_y >= 0, FALSE);
if (path)
*path = NULL;
item = _gtk_icon_view_get_item_at_coords (icon_view,
drag_x + gtk_adjustment_get_value (icon_view->priv->hadjustment),
drag_y + gtk_adjustment_get_value (icon_view->priv->vadjustment),
FALSE, NULL);
if (item == NULL)
return FALSE;
if (path)
*path = gtk_tree_path_new_from_indices (item->index, -1);
if (pos)
{
if (drag_x < item->cell_area.x + item->cell_area.width / 4)
*pos = GTK_ICON_VIEW_DROP_LEFT;
else if (drag_x > item->cell_area.x + item->cell_area.width * 3 / 4)
*pos = GTK_ICON_VIEW_DROP_RIGHT;
else if (drag_y < item->cell_area.y + item->cell_area.height / 4)
*pos = GTK_ICON_VIEW_DROP_ABOVE;
else if (drag_y > item->cell_area.y + item->cell_area.height * 3 / 4)
*pos = GTK_ICON_VIEW_DROP_BELOW;
else
*pos = GTK_ICON_VIEW_DROP_INTO;
}
return TRUE;
}
/**
* gtk_icon_view_create_drag_icon:
* @icon_view: a #GtkIconView
* @path: a #GtkTreePath in @icon_view
*
* Creates a #cairo_surface_t representation of the item at @path.
* This image is used for a drag icon.
*
* Returns: (transfer full): a newly-allocated surface of the drag icon.
**/
GdkPaintable *
gtk_icon_view_create_drag_icon (GtkIconView *icon_view,
GtkTreePath *path)
{
GtkWidget *widget;
GtkSnapshot *snapshot;
GdkPaintable *paintable;
GList *l;
gint index;
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), NULL);
g_return_val_if_fail (path != NULL, NULL);
widget = GTK_WIDGET (icon_view);
if (!gtk_widget_get_realized (widget))
return NULL;
index = gtk_tree_path_get_indices (path)[0];
for (l = icon_view->priv->items; l; l = l->next)
{
GtkIconViewItem *item = l->data;
if (index == item->index)
{
snapshot = gtk_snapshot_new ();
gtk_icon_view_snapshot_item (icon_view, snapshot, item,
icon_view->priv->item_padding,
icon_view->priv->item_padding,
FALSE);
paintable = gtk_snapshot_free_to_paintable (snapshot, NULL);
return paintable;
}
}
return NULL;
}
/**
* gtk_icon_view_get_reorderable:
* @icon_view: a #GtkIconView
*
* Retrieves whether the user can reorder the list via drag-and-drop.
* See gtk_icon_view_set_reorderable().
*
* Returns: %TRUE if the list can be reordered.
**/
gboolean
gtk_icon_view_get_reorderable (GtkIconView *icon_view)
{
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
return icon_view->priv->reorderable;
}
static const char *item_formats[] = {
"GTK_TREE_MODEL_ROW"
};
/**
* gtk_icon_view_set_reorderable:
* @icon_view: A #GtkIconView.
* @reorderable: %TRUE, if the list of items can be reordered.
*
* This function is a convenience function to allow you to reorder models that
* support the #GtkTreeDragSourceIface and the #GtkTreeDragDestIface. Both
* #GtkTreeStore and #GtkListStore support these. If @reorderable is %TRUE, then
* the user can reorder the model by dragging and dropping rows. The
* developer can listen to these changes by connecting to the model's
* row_inserted and row_deleted signals. The reordering is implemented by setting up
* the icon view as a drag source and destination. Therefore, drag and
* drop can not be used in a reorderable view for any other purpose.
*
* This function does not give you any degree of control over the order -- any
* reordering is allowed. If more control is needed, you should probably
* handle drag and drop manually.
**/
void
gtk_icon_view_set_reorderable (GtkIconView *icon_view,
gboolean reorderable)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
reorderable = reorderable != FALSE;
if (icon_view->priv->reorderable == reorderable)
return;
if (reorderable)
{
GdkContentFormats *formats = gdk_content_formats_new (item_formats, G_N_ELEMENTS (item_formats));
gtk_icon_view_enable_model_drag_source (icon_view,
GDK_BUTTON1_MASK,
formats,
GDK_ACTION_MOVE);
gtk_icon_view_enable_model_drag_dest (icon_view,
formats,
GDK_ACTION_MOVE);
gdk_content_formats_unref (formats);
}
else
{
gtk_icon_view_unset_model_drag_source (icon_view);
gtk_icon_view_unset_model_drag_dest (icon_view);
}
icon_view->priv->reorderable = reorderable;
g_object_notify (G_OBJECT (icon_view), "reorderable");
}
/**
* gtk_icon_view_set_activate_on_single_click:
* @icon_view: a #GtkIconView
* @single: %TRUE to emit item-activated on a single click
*
* Causes the #GtkIconView::item-activated signal to be emitted on
* a single click instead of a double click.
**/
void
gtk_icon_view_set_activate_on_single_click (GtkIconView *icon_view,
gboolean single)
{
g_return_if_fail (GTK_IS_ICON_VIEW (icon_view));
single = single != FALSE;
if (icon_view->priv->activate_on_single_click == single)
return;
icon_view->priv->activate_on_single_click = single;
g_object_notify (G_OBJECT (icon_view), "activate-on-single-click");
}
/**
* gtk_icon_view_get_activate_on_single_click:
* @icon_view: a #GtkIconView
*
* Gets the setting set by gtk_icon_view_set_activate_on_single_click().
*
* Returns: %TRUE if item-activated will be emitted on a single click
**/
gboolean
gtk_icon_view_get_activate_on_single_click (GtkIconView *icon_view)
{
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), FALSE);
return icon_view->priv->activate_on_single_click;
}
static gboolean
gtk_icon_view_buildable_custom_tag_start (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
GMarkupParser *parser,
gpointer *data)
{
if (parent_buildable_iface->custom_tag_start (buildable, builder, child,
tagname, parser, data))
return TRUE;
return _gtk_cell_layout_buildable_custom_tag_start (buildable, builder, child,
tagname, parser, data);
}
static void
gtk_icon_view_buildable_custom_tag_end (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *tagname,
gpointer *data)
{
if (!_gtk_cell_layout_buildable_custom_tag_end (buildable, builder,
child, tagname, data))
parent_buildable_iface->custom_tag_end (buildable, builder,
child, tagname, data);
}
Reference in New Issue View Git Blame Copy Permalink