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gtk2/gtk/gtkiconview.c
Timm Bäder ea2f66226a iconview: Fix scrolled drawing 
We were only drawing the scrolled away first few items
2019-01-18 19:41:19 +01:00

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/* 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,
int width,
int height,
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,
GdkDrag *drag);
static void gtk_icon_view_drag_end (GtkWidget *widget,
GdkDrag *drag);
static void gtk_icon_view_drag_data_get (GtkWidget *widget,
GdkDrag *drag,
GtkSelectionData *selection_data);
static void gtk_icon_view_drag_data_delete (GtkWidget *widget,
GdkDrag *drag);
/* Target side drag signals */
static void gtk_icon_view_drag_leave (GtkWidget *widget,
GdkDrop *drop);
static gboolean gtk_icon_view_drag_motion (GtkWidget *widget,
GdkDrop *drop,
gint x,
gint y);
static gboolean gtk_icon_view_drag_drop (GtkWidget *widget,
GdkDrop *drop,
gint x,
gint y);
static void gtk_icon_view_drag_data_received (GtkWidget *widget,
GdkDrop *drop,
GtkSelectionData *selection_data);
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_add_child (GtkBuildable *buildable,
GtkBuilder *builder,
GObject *child,
const gchar *type)
{
if (GTK_IS_CELL_RENDERER (child))
_gtk_cell_layout_buildable_add_child (buildable, builder, child, type);
else
parent_buildable_iface->add_child (buildable, builder, child, type);
}
static void
gtk_icon_view_buildable_init (GtkBuildableIface *iface)
{
parent_buildable_iface = g_type_interface_peek_parent (iface);
iface->add_child = gtk_icon_view_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)
{
GtkEventController *controller;
GtkGesture *gesture;
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);
gesture = gtk_gesture_multi_press_new ();
g_signal_connect (gesture, "pressed", G_CALLBACK (gtk_icon_view_button_press),
icon_view);
g_signal_connect (gesture, "released", G_CALLBACK (gtk_icon_view_button_release),
icon_view);
gtk_widget_add_controller (GTK_WIDGET (icon_view), GTK_EVENT_CONTROLLER (gesture));
controller = gtk_event_controller_motion_new ();
g_signal_connect (controller, "leave", G_CALLBACK (gtk_icon_view_leave),
icon_view);
g_signal_connect (controller, "motion", G_CALLBACK (gtk_icon_view_motion),
icon_view);
gtk_widget_add_controller (GTK_WIDGET (icon_view), controller);
controller = gtk_event_controller_key_new ();
g_signal_connect (controller, "key-pressed", G_CALLBACK (gtk_icon_view_key_pressed),
icon_view);
gtk_widget_add_controller (GTK_WIDGET (icon_view), controller);
}
/* 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->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,
int width,
int height,
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;
double offset_x, offset_y;
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
));
offset_x = gtk_adjustment_get_value (icon_view->priv->hadjustment);
offset_y = gtk_adjustment_get_value (icon_view->priv->vadjustment);
gtk_snapshot_offset (snapshot, - offset_x, - offset_y);
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) { offset_x, offset_y, 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 (GdkDrop *drop,
GdkDragAction suggested_action)
{
g_object_set_data (G_OBJECT (drop),
I_("gtk-icon-view-status-pending"),
GINT_TO_POINTER (suggested_action));
}
static GdkDragAction
get_status_pending (GdkDrop *drop)
{
return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (drop),
"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 (GdkDrag *drag,
GtkTreeModel *model,
GtkTreePath *source_row)
{
if (source_row)
g_object_set_data_full (G_OBJECT (drag),
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 (drag),
I_("gtk-icon-view-source-row"),
NULL, NULL);
}
static GtkTreePath*
get_source_row (GdkDrag *drag)
{
GtkTreeRowReference *ref;
ref = g_object_get_data (G_OBJECT (drag), "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 (GdkDrop *drop,
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 (drop),
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 (drop),
I_("gtk-icon-view-dest-row"),
dr, (GDestroyNotify) dest_row_free);
}
static GtkTreePath*
get_dest_row (GdkDrop *drop)
{
DestRow *dr;
dr = g_object_get_data (G_OBJECT (drop), "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,
GdkDrop *drop,
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, drop,
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)
{
*suggested_action = GDK_ACTION_ALL;
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);
GdkDrag *drag;
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;
drag = gtk_drag_begin (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 (drag, 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,
GdkDrag *drag)
{
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 (drag, icon, x, y);
g_object_unref (icon);
}
static void
gtk_icon_view_drag_end (GtkWidget *widget,
GdkDrag *drag)
{
/* do nothing */
}
static void
gtk_icon_view_drag_data_get (GtkWidget *widget,
GdkDrag *drag,
GtkSelectionData *selection_data)
{
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 (drag);
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,
GdkDrag *drag)
{
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 (drag);
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 (drag, NULL, NULL);
}
/* Target side drag signals */
static void
gtk_icon_view_drag_leave (GtkWidget *widget,
GdkDrop *drop)
{
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,
GdkDrop *drop,
gint x,
gint y)
{
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, drop, 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_drop_status (drop, 0);
}
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 (drop, suggested_action);
gtk_drag_get_data (widget, drop, target);
}
else
{
set_status_pending (drop, 0);
gdk_drop_status (drop, suggested_action);
}
}
if (path)
gtk_tree_path_free (path);
return TRUE;
}
static gboolean
gtk_icon_view_drag_drop (GtkWidget *widget,
GdkDrop *drop,
gint x,
gint y)
{
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, drop, 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 (drop, 0);
set_dest_row (drop, 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, drop, target);
return TRUE;
}
else
return FALSE;
}
static GdkDragAction
gtk_icon_view_get_action (GtkWidget *treeview,
GdkDrop *drop)
{
GdkDrag *drag = gdk_drop_get_drag (drop);
GtkWidget *source_widget = gtk_drag_get_source_widget (drag);
GdkDragAction actions;
actions = gdk_drop_get_actions (drop);
if (source_widget == treeview &&
actions & GDK_ACTION_MOVE)
return GDK_ACTION_MOVE;
if (actions & GDK_ACTION_COPY)
return GDK_ACTION_COPY;
if (actions & GDK_ACTION_MOVE)
return GDK_ACTION_MOVE;
if (actions & GDK_ACTION_LINK)
return GDK_ACTION_LINK;
return 0;
}
static void
gtk_icon_view_drag_data_received (GtkWidget *widget,
GdkDrop *drop,
GtkSelectionData *selection_data)
{
GtkTreePath *path;
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 (drop);
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_drop_status (drop, suggested_action);
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 (drop);
if (dest_row == NULL)
return;
if (gtk_selection_data_get_length (selection_data) >= 0)
{
suggested_action = gtk_icon_view_get_action (widget, drop);
if (suggested_action &&
!gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
dest_row,
selection_data))
suggested_action = 0;
}
gdk_drop_finish (drop, suggested_action);
gtk_tree_path_free (dest_row);
/* drop dest_row */
set_dest_row (drop, 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);
}
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