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gtk2/gtk/gtktreeview.c
Jonathan Blandford fe8eecdf75 Now we listen to the reorder signal. 
Thu Mar 29 20:20:38 2001  Jonathan Blandford  <jrb@redhat.com>

        * gtk/gtktreemodel.c (gtk_tree_row_ref_reordered_callback): Now we
        listen to the reorder signal.
2001-03-30 01:26:30 +00:00

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/* gtktreeview.c
* Copyright (C) 2000 Red Hat, Inc., Jonathan Blandford <jrb@redhat.com>
*
* 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "gtktreeview.h"
#include "gtkrbtree.h"
#include "gtktreednd.h"
#include "gtktreeprivate.h"
#include "gtkcellrenderer.h"
#include "gtksignal.h"
#include "gtkmain.h"
#include "gtkbutton.h"
#include "gtkalignment.h"
#include "gtklabel.h"
#include "gtkhbox.h"
#include "gtkarrow.h"
#include "gtkintl.h"
#include <gdk/gdkkeysyms.h>
/* The "background" areas of all rows/cells add up to cover the entire tree.
* The background includes all inter-row and inter-cell spacing.
* The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
* i.e. just the cells, no spacing.
*/
#define BACKGROUND_FIRST_PIXEL(tree_view,tree,node) (_gtk_rbtree_node_find_offset ((tree), (node)) + TREE_VIEW_HEADER_HEIGHT ((tree_view)))
#define CELL_FIRST_PIXEL(tree_view,tree,node) (BACKGROUND_FIRST_PIXEL (tree_view,tree,node) + TREE_VIEW_VERTICAL_SEPARATOR/2)
#define BACKGROUND_HEIGHT(node) (GTK_RBNODE_GET_HEIGHT (node))
#define CELL_HEIGHT(node) (BACKGROUND_HEIGHT (node) - TREE_VIEW_VERTICAL_SEPARATOR);
#define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) - TREE_VIEW_HEADER_HEIGHT (tree_view))
#define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) + TREE_VIEW_HEADER_HEIGHT (tree_view))
typedef struct _GtkTreeViewChild GtkTreeViewChild;
struct _GtkTreeViewChild
{
GtkWidget *widget;
gint x;
gint y;
};
enum
{
ROW_ACTIVATED,
LAST_SIGNAL
};
enum {
PROP_0,
PROP_MODEL,
PROP_HADJUSTMENT,
PROP_VADJUSTMENT,
PROP_HEADERS_VISIBLE,
PROP_HEADERS_CLICKABLE,
PROP_EXPANDER_COLUMN,
PROP_RULES_HINT
};
static void gtk_tree_view_init (GtkTreeView *tree_view);
static void gtk_tree_view_class_init (GtkTreeViewClass *klass);
static void gtk_tree_view_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_tree_view_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
/* o signals */
static void gtk_tree_view_finalize (GObject *object);
/* object signals */
static void gtk_tree_view_destroy (GtkObject *object);
/* widget signals */
static void gtk_tree_view_setup_model (GtkTreeView *tree_view);
static void gtk_tree_view_realize (GtkWidget *widget);
static void gtk_tree_view_unrealize (GtkWidget *widget);
static void gtk_tree_view_map (GtkWidget *widget);
static void gtk_tree_view_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_tree_view_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static gboolean gtk_tree_view_expose (GtkWidget *widget,
GdkEventExpose *event);
static gboolean gtk_tree_view_motion (GtkWidget *widget,
GdkEventMotion *event);
static gboolean gtk_tree_view_enter_notify (GtkWidget *widget,
GdkEventCrossing *event);
static gboolean gtk_tree_view_leave_notify (GtkWidget *widget,
GdkEventCrossing *event);
static gboolean gtk_tree_view_button_press (GtkWidget *widget,
GdkEventButton *event);
static gboolean gtk_tree_view_button_release (GtkWidget *widget,
GdkEventButton *event);
static void gtk_tree_view_set_focus_child (GtkContainer *container,
GtkWidget *child);
static void gtk_tree_view_draw_focus (GtkWidget *widget);
static gint gtk_tree_view_focus_in (GtkWidget *widget,
GdkEventFocus *event);
static gint gtk_tree_view_focus_out (GtkWidget *widget,
GdkEventFocus *event);
static gint gtk_tree_view_focus (GtkContainer *container,
GtkDirectionType direction);
/* container signals */
static void gtk_tree_view_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_tree_view_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
/* Source side drag signals */
static void gtk_tree_view_drag_begin (GtkWidget *widget,
GdkDragContext *context);
static void gtk_tree_view_drag_end (GtkWidget *widget,
GdkDragContext *context);
static void gtk_tree_view_drag_data_get (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint info,
guint time);
static void gtk_tree_view_drag_data_delete (GtkWidget *widget,
GdkDragContext *context);
/* Target side drag signals */
static void gtk_tree_view_drag_leave (GtkWidget *widget,
GdkDragContext *context,
guint time);
static gboolean gtk_tree_view_drag_motion (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time);
static gboolean gtk_tree_view_drag_drop (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time);
static void gtk_tree_view_drag_data_received (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection_data,
guint info,
guint time);
/* tree_model signals */
static void gtk_tree_view_set_adjustments (GtkTreeView *tree_view,
GtkAdjustment *hadj,
GtkAdjustment *vadj);
static void gtk_tree_view_changed (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data);
static void gtk_tree_view_inserted (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data);
static void gtk_tree_view_has_child_toggled (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data);
static void gtk_tree_view_deleted (GtkTreeModel *model,
GtkTreePath *path,
gpointer data);
static void gtk_tree_view_reordered (GtkTreeModel *model,
GtkTreePath *parent,
GtkTreeIter *iter,
gint *new_order,
gpointer data);
/* Internal functions */
static void gtk_tree_view_unref_tree (GtkTreeView *tree_view,
GtkRBTree *tree);
static void gtk_tree_view_queue_draw_node (GtkTreeView *tree_view,
GtkRBTree *tree,
GtkRBNode *node,
GdkRectangle *clip_rect);
static void gtk_tree_view_queue_draw_path (GtkTreeView *tree_view,
GtkTreePath *path,
GdkRectangle *clip_rect);
static void gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
GtkRBTree *tree,
GtkRBNode *node,
gint x,
gint y);
static void gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
gint *x1,
gint *x2);
static gint gtk_tree_view_new_column_width (GtkTreeView *tree_view,
gint i,
gint *x);
static void gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
GtkTreeView *tree_view);
static gint gtk_tree_view_insert_iter_height (GtkTreeView *tree_view,
GtkRBTree *tree,
GtkTreeIter *iter,
gint depth);
static void gtk_tree_view_build_tree (GtkTreeView *tree_view,
GtkRBTree *tree,
GtkTreeIter *iter,
gint depth,
gboolean recurse,
gboolean calc_bounds);
static void gtk_tree_view_calc_size (GtkTreeView *priv,
GtkRBTree *tree,
GtkTreeIter *iter,
gint depth);
static gboolean gtk_tree_view_discover_dirty_iter (GtkTreeView *tree_view,
GtkTreeIter *iter,
gint depth,
gint *height);
static void gtk_tree_view_discover_dirty (GtkTreeView *tree_view,
GtkRBTree *tree,
GtkTreeIter *iter,
gint depth);
static void gtk_tree_view_check_dirty (GtkTreeView *tree_view);
#if 0
static void gtk_tree_view_create_button (GtkTreeView *tree_view,
gint i);
static void gtk_tree_view_create_buttons (GtkTreeView *tree_view);
#endif
static void gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
GtkRBTree *tree,
GtkRBNode *node);
static gboolean gtk_tree_view_maybe_begin_dragging_row (GtkTreeView *tree_view,
GdkEventMotion *event);
static void _gtk_tree_view_update_col_width (GtkTreeView *tree_view);
static GtkContainerClass *parent_class = NULL;
static guint tree_view_signals[LAST_SIGNAL] = { 0 };
/* Class Functions */
GtkType
gtk_tree_view_get_type (void)
{
static GtkType tree_view_type = 0;
if (!tree_view_type)
{
static const GTypeInfo tree_view_info =
{
sizeof (GtkTreeViewClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_tree_view_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkTreeView),
0, /* n_preallocs */
(GInstanceInitFunc) gtk_tree_view_init
};
tree_view_type = g_type_register_static (GTK_TYPE_CONTAINER, "GtkTreeView", &tree_view_info, 0);
}
return tree_view_type;
}
static void
gtk_tree_view_class_init (GtkTreeViewClass *class)
{
GObjectClass *o_class;
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
o_class = (GObjectClass *) class;
object_class = (GtkObjectClass *) class;
widget_class = (GtkWidgetClass *) class;
container_class = (GtkContainerClass *) class;
parent_class = g_type_class_peek_parent (class);
o_class->finalize = gtk_tree_view_finalize;
o_class->set_property = gtk_tree_view_set_property;
o_class->get_property = gtk_tree_view_get_property;
object_class->destroy = gtk_tree_view_destroy;
widget_class->realize = gtk_tree_view_realize;
widget_class->unrealize = gtk_tree_view_unrealize;
widget_class->map = gtk_tree_view_map;
widget_class->size_request = gtk_tree_view_size_request;
widget_class->size_allocate = gtk_tree_view_size_allocate;
widget_class->expose_event = gtk_tree_view_expose;
widget_class->motion_notify_event = gtk_tree_view_motion;
widget_class->enter_notify_event = gtk_tree_view_enter_notify;
widget_class->leave_notify_event = gtk_tree_view_leave_notify;
widget_class->button_press_event = gtk_tree_view_button_press;
widget_class->button_release_event = gtk_tree_view_button_release;
widget_class->focus_in_event = gtk_tree_view_focus_in;
widget_class->focus_out_event = gtk_tree_view_focus_out;
widget_class->drag_begin = gtk_tree_view_drag_begin;
widget_class->drag_end = gtk_tree_view_drag_end;
widget_class->drag_data_get = gtk_tree_view_drag_data_get;
widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
widget_class->drag_leave = gtk_tree_view_drag_leave;
widget_class->drag_motion = gtk_tree_view_drag_motion;
widget_class->drag_drop = gtk_tree_view_drag_drop;
widget_class->drag_data_received = gtk_tree_view_drag_data_received;
container_class->forall = gtk_tree_view_forall;
container_class->remove = gtk_tree_view_remove;
container_class->set_focus_child = gtk_tree_view_set_focus_child;
container_class->focus = gtk_tree_view_focus;
class->set_scroll_adjustments = gtk_tree_view_set_adjustments;
g_object_class_install_property (o_class,
PROP_MODEL,
g_param_spec_object ("model",
_("TreeView Model"),
_("The model for the tree view"),
GTK_TYPE_TREE_MODEL,
G_PARAM_READWRITE));
g_object_class_install_property (o_class,
PROP_HADJUSTMENT,
g_param_spec_object ("hadjustment",
_("Horizontal Adjustment"),
_("Horizontal Adjustment for the widget"),
GTK_TYPE_ADJUSTMENT,
G_PARAM_READWRITE));
g_object_class_install_property (o_class,
PROP_VADJUSTMENT,
g_param_spec_object ("vadjustment",
_("Vertical Adjustment"),
_("Vertical Adjustment for the widget"),
GTK_TYPE_ADJUSTMENT,
G_PARAM_READWRITE));
g_object_class_install_property (o_class,
PROP_HEADERS_VISIBLE,
g_param_spec_boolean ("headers_visible",
_("Visible"),
_("Show the column header buttons"),
FALSE,
G_PARAM_READWRITE));
g_object_class_install_property (o_class,
PROP_HEADERS_CLICKABLE,
g_param_spec_boolean ("headers_clickable",
_("Headers Clickable"),
_("Column headers respond to click events"),
FALSE,
G_PARAM_READWRITE));
g_object_class_install_property (o_class,
PROP_EXPANDER_COLUMN,
g_param_spec_uint ("expander_column",
_("Expand Column"),
_("Set the column number for the expander column"),
0,
G_MAXINT,
0,
G_PARAM_READWRITE));
g_object_class_install_property (o_class,
PROP_RULES_HINT,
g_param_spec_boolean ("rules_hint",
_("Rules Hint"),
_("Set a hint to the theme engine to draw rows in alternating colors"),
FALSE,
G_PARAM_READWRITE));
widget_class->set_scroll_adjustments_signal =
gtk_signal_new ("set_scroll_adjustments",
GTK_RUN_LAST,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkTreeViewClass, set_scroll_adjustments),
gtk_marshal_VOID__OBJECT_OBJECT,
GTK_TYPE_NONE, 2,
GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);
tree_view_signals[ROW_ACTIVATED] = gtk_signal_new ("row_activated",
GTK_RUN_LAST | GTK_RUN_ACTION,
GTK_CLASS_TYPE (object_class),
GTK_SIGNAL_OFFSET (GtkTreeViewClass, row_activated),
gtk_marshal_VOID__BOXED_OBJECT,
GTK_TYPE_NONE, 2,
GTK_TYPE_TREE_PATH,
GTK_TYPE_TREE_VIEW_COLUMN);
}
static void
gtk_tree_view_init (GtkTreeView *tree_view)
{
tree_view->priv = g_new0 (GtkTreeViewPrivate, 1);
GTK_WIDGET_SET_FLAGS (tree_view, GTK_CAN_FOCUS);
tree_view->priv->model = NULL;
tree_view->priv->flags = GTK_TREE_VIEW_IS_LIST | GTK_TREE_VIEW_SHOW_EXPANDERS | GTK_TREE_VIEW_DRAW_KEYFOCUS | GTK_TREE_VIEW_HEADERS_VISIBLE;
tree_view->priv->tab_offset = TREE_VIEW_EXPANDER_WIDTH;
tree_view->priv->n_columns = 0;
tree_view->priv->columns = NULL;
tree_view->priv->button_pressed_node = NULL;
tree_view->priv->button_pressed_tree = NULL;
tree_view->priv->prelight_node = NULL;
tree_view->priv->header_height = 1;
tree_view->priv->x_drag = 0;
tree_view->priv->drag_pos = -1;
tree_view->priv->selection = NULL;
tree_view->priv->anchor = NULL;
tree_view->priv->cursor = NULL;
tree_view->priv->header_has_focus = FALSE;
tree_view->priv->pressed_button = -1;
tree_view->priv->press_start_x = -1;
tree_view->priv->press_start_y = -1;
gtk_tree_view_set_adjustments (tree_view, NULL, NULL);
_gtk_tree_view_update_size (tree_view);
}
/* Object methods
*/
static void
gtk_tree_view_finalize (GObject *object)
{
GtkTreeView *tree_view = (GtkTreeView *) object;
g_free (tree_view->priv);
if (G_OBJECT_CLASS (parent_class)->finalize)
(* G_OBJECT_CLASS (parent_class)->finalize) (object);
}
static void
gtk_tree_view_destroy (GtkObject *object)
{
GtkTreeView *tree_view = (GtkTreeView *) object;
GList *list;
if (tree_view->priv->tree != NULL)
{
gtk_tree_view_unref_tree (tree_view, tree_view->priv->tree);
_gtk_rbtree_free (tree_view->priv->tree);
tree_view->priv->tree = NULL;
}
if (tree_view->priv->model != NULL)
{
g_object_unref (G_OBJECT (tree_view->priv->model));
tree_view->priv->model = NULL;
}
if (tree_view->priv->columns != NULL)
{
for (list = tree_view->priv->columns; list; list = list->next)
g_object_unref (G_OBJECT (list->data));
g_list_free (tree_view->priv->columns);
tree_view->priv->columns = NULL;
}
if (tree_view->priv->selection != NULL)
{
_gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
g_object_unref (tree_view->priv->selection);
tree_view->priv->selection = NULL;
}
if (tree_view->priv->anchor != NULL)
{
gtk_tree_row_reference_free (tree_view->priv->anchor);
tree_view->priv->anchor = NULL;
}
if (tree_view->priv->scroll_to_path != NULL)
{
gtk_tree_path_free (tree_view->priv->scroll_to_path);
tree_view->priv->scroll_to_path = NULL;
}
if (tree_view->priv->drag_dest_row != NULL)
{
gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
tree_view->priv->drag_dest_row = NULL;
}
if (tree_view->priv->cursor)
{
gtk_tree_row_reference_free (tree_view->priv->cursor);
tree_view->priv->cursor = NULL;
}
if (GTK_OBJECT_CLASS (parent_class)->destroy)
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}
/* Property handlers
*/
static void
gtk_tree_view_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkTreeView *tree_view;
tree_view = GTK_TREE_VIEW (object);
switch (prop_id)
{
case PROP_MODEL:
gtk_tree_view_set_model (tree_view, GTK_TREE_MODEL (g_value_get_object (value)));
break;
case PROP_HADJUSTMENT:
gtk_tree_view_set_hadjustment (tree_view, GTK_ADJUSTMENT (g_value_get_object (value)));
break;
case PROP_VADJUSTMENT:
gtk_tree_view_set_vadjustment (tree_view, GTK_ADJUSTMENT (g_value_get_object (value)));
break;
case PROP_HEADERS_VISIBLE:
gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
break;
case PROP_HEADERS_CLICKABLE:
gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
break;
case PROP_EXPANDER_COLUMN:
gtk_tree_view_set_expander_column (tree_view, g_value_get_uint (value));
break;
case PROP_RULES_HINT:
gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
break;
default:
break;
}
}
static void
gtk_tree_view_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkTreeView *tree_view;
tree_view = GTK_TREE_VIEW (object);
switch (prop_id)
{
case PROP_MODEL:
g_value_set_object (value, G_OBJECT (tree_view->priv->model));
break;
case PROP_HADJUSTMENT:
g_value_set_object (value, G_OBJECT (tree_view->priv->hadjustment));
break;
case PROP_VADJUSTMENT:
g_value_set_object (value, G_OBJECT (tree_view->priv->vadjustment));
break;
case PROP_HEADERS_VISIBLE:
g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
break;
case PROP_HEADERS_CLICKABLE:
/* g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view)); */
break;
case PROP_EXPANDER_COLUMN:
g_value_set_uint (value, tree_view->priv->expander_column);
break;
case PROP_RULES_HINT:
g_value_set_boolean (value, tree_view->priv->has_rules);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
/* Widget methods
*/
static void
gtk_tree_view_realize (GtkWidget *widget)
{
GList *tmp_list;
GtkTreeView *tree_view;
GdkGCValues values;
GdkWindowAttr attributes;
gint attributes_mask;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_TREE_VIEW (widget));
tree_view = GTK_TREE_VIEW (widget);
gtk_tree_view_check_dirty (GTK_TREE_VIEW (widget));
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
/* Make the main, clipping window */
attributes.window_type = GDK_WINDOW_CHILD;
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
&attributes, attributes_mask);
gdk_window_set_user_data (widget->window, widget);
/* Make the window for the tree */
attributes.x = 0;
attributes.y = 0;
attributes.width = tree_view->priv->width;
attributes.height = tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view);
attributes.event_mask = GDK_EXPOSURE_MASK |
GDK_SCROLL_MASK |
GDK_POINTER_MOTION_MASK |
GDK_ENTER_NOTIFY_MASK |
GDK_LEAVE_NOTIFY_MASK |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
gtk_widget_get_events (widget);
tree_view->priv->bin_window = gdk_window_new (widget->window,
&attributes, attributes_mask);
gdk_window_set_user_data (tree_view->priv->bin_window, widget);
/* Make the column header window */
attributes.x = 0;
attributes.y = 0;
attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
attributes.height = tree_view->priv->header_height;
attributes.event_mask = (GDK_EXPOSURE_MASK |
GDK_SCROLL_MASK |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_KEY_PRESS_MASK |
GDK_KEY_RELEASE_MASK) |
gtk_widget_get_events (widget);
tree_view->priv->header_window = gdk_window_new (widget->window,
&attributes, attributes_mask);
gdk_window_set_user_data (tree_view->priv->header_window, widget);
values.foreground = (widget->style->white.pixel==0 ?
widget->style->black:widget->style->white);
values.function = GDK_XOR;
values.subwindow_mode = GDK_INCLUDE_INFERIORS;
tree_view->priv->xor_gc = gdk_gc_new_with_values (widget->window,
&values,
GDK_GC_FOREGROUND |
GDK_GC_FUNCTION |
GDK_GC_SUBWINDOW);
/* Add them all up. */
widget->style = gtk_style_attach (widget->style, widget->window);
gdk_window_set_background (widget->window, &widget->style->base[widget->state]);
gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
tmp_list = tree_view->priv->children;
while (tmp_list)
{
GtkTreeViewChild *child = tmp_list->data;
tmp_list = tmp_list->next;
gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
}
for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
_gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
_gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
if (tree_view->priv->scroll_to_path != NULL ||
tree_view->priv->scroll_to_column != NULL)
{
gtk_tree_view_scroll_to_cell (tree_view,
tree_view->priv->scroll_to_path,
tree_view->priv->scroll_to_column,
tree_view->priv->scroll_to_row_align,
tree_view->priv->scroll_to_col_align);
if (tree_view->priv->scroll_to_path)
{
gtk_tree_path_free (tree_view->priv->scroll_to_path);
tree_view->priv->scroll_to_path = NULL;
}
tree_view->priv->scroll_to_column = NULL;
}
}
static void
gtk_tree_view_unrealize (GtkWidget *widget)
{
GtkTreeView *tree_view;
GList *list;
g_return_if_fail (GTK_IS_TREE_VIEW (widget));
tree_view = GTK_TREE_VIEW (widget);
if (tree_view->priv->scroll_timeout != 0)
{
gtk_timeout_remove (tree_view->priv->scroll_timeout);
tree_view->priv->scroll_timeout = 0;
}
if (tree_view->priv->open_dest_timeout != 0)
{
gtk_timeout_remove (tree_view->priv->open_dest_timeout);
tree_view->priv->open_dest_timeout = 0;
}
for (list = tree_view->priv->columns; list; list = list->next)
_gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
gdk_window_set_user_data (tree_view->priv->bin_window, NULL);
gdk_window_destroy (tree_view->priv->bin_window);
tree_view->priv->bin_window = NULL;
gdk_window_set_user_data (tree_view->priv->header_window, NULL);
gdk_window_destroy (tree_view->priv->header_window);
tree_view->priv->header_window = NULL;
gdk_cursor_destroy (tree_view->priv->cursor_drag);
gdk_gc_destroy (tree_view->priv->xor_gc);
/* GtkWidget::unrealize destroys children and widget->window */
if (GTK_WIDGET_CLASS (parent_class)->unrealize)
(* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
}
static void
gtk_tree_view_map_buttons (GtkTreeView *tree_view)
{
GList *list;
g_return_if_fail (GTK_WIDGET_MAPPED (tree_view));
if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
{
GtkTreeViewColumn *column;
for (list = tree_view->priv->columns; list; list = list->next)
{
column = list->data;
if (GTK_WIDGET_VISIBLE (column->button) &&
!GTK_WIDGET_MAPPED (column->button))
gtk_widget_map (column->button);
}
for (list = tree_view->priv->columns; list; list = list->next)
{
column = list->data;
if (column->visible == FALSE)
continue;
if (column->column_type == GTK_TREE_VIEW_COLUMN_RESIZEABLE)
{
gdk_window_raise (column->window);
gdk_window_show (column->window);
}
else
gdk_window_hide (column->window);
}
gdk_window_show (tree_view->priv->header_window);
}
}
static void
gtk_tree_view_map (GtkWidget *widget)
{
GList *tmp_list;
GtkTreeView *tree_view;
g_return_if_fail (GTK_IS_TREE_VIEW (widget));
tree_view = GTK_TREE_VIEW (widget);
GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
tmp_list = tree_view->priv->children;
while (tmp_list)
{
GtkTreeViewChild *child = tmp_list->data;
tmp_list = tmp_list->next;
if (GTK_WIDGET_VISIBLE (child->widget))
{
if (!GTK_WIDGET_MAPPED (child->widget))
gtk_widget_map (child->widget);
}
}
gdk_window_show (tree_view->priv->bin_window);
gtk_tree_view_map_buttons (tree_view);
gdk_window_show (widget->window);
}
static void
gtk_tree_view_size_request_buttons (GtkTreeView *tree_view)
{
GList *list;
tree_view->priv->header_height = 1;
if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_MODEL_SETUP))
{
for (list = tree_view->priv->columns; list; list = list->next)
{
GtkRequisition requisition;
GtkTreeViewColumn *column;
column = list->data;
gtk_widget_size_request (column->button, &requisition);
gtk_tree_view_column_set_width (column, MAX (column->width, requisition.width));
tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
}
}
}
static void
gtk_tree_view_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkTreeView *tree_view;
GList *tmp_list;
g_return_if_fail (GTK_IS_TREE_VIEW (widget));
tree_view = GTK_TREE_VIEW (widget);
requisition->width = 200;
requisition->height = 200;
tmp_list = tree_view->priv->children;
while (tmp_list)
{
GtkTreeViewChild *child = tmp_list->data;
GtkRequisition child_requisition;
tmp_list = tmp_list->next;
if (GTK_WIDGET_VISIBLE (child->widget))
gtk_widget_size_request (child->widget, &child_requisition);
}
gtk_tree_view_size_request_buttons (tree_view);
}
static void
gtk_tree_view_size_allocate_buttons (GtkWidget *widget)
{
GtkTreeView *tree_view;
GList *list;
GtkTreeViewColumn *column;
GtkAllocation allocation;
gint width = 0;
tree_view = GTK_TREE_VIEW (widget);
allocation.y = 0;
allocation.height = tree_view->priv->header_height;
for (list = tree_view->priv->columns; list != NULL; list = list->next)
{
column = list->data;
if (!column->visible)
continue;
allocation.x = width;
allocation.width = column->displayed_width;
width += column->width;
gtk_widget_size_allocate (column->button, &allocation);
if (column->window)
gdk_window_move_resize (column->window,
allocation.x + allocation.width - TREE_VIEW_DRAG_WIDTH/2,
allocation.y,
TREE_VIEW_DRAG_WIDTH, allocation.height);
}
}
static void
gtk_tree_view_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GList *tmp_list;
GtkTreeView *tree_view;
g_return_if_fail (GTK_IS_TREE_VIEW (widget));
widget->allocation = *allocation;
tree_view = GTK_TREE_VIEW (widget);
gtk_tree_view_check_dirty (tree_view);
tmp_list = tree_view->priv->children;
while (tmp_list)
{
GtkAllocation allocation;
GtkRequisition requisition;
GtkTreeViewChild *child = tmp_list->data;
tmp_list = tmp_list->next;
allocation.x = child->x;
allocation.y = child->y;
gtk_widget_get_child_requisition (child->widget, &requisition);
allocation.width = requisition.width;
allocation.height = requisition.height;
gtk_widget_size_allocate (child->widget, &allocation);
}
if (GTK_WIDGET_REALIZED (widget))
{
gdk_window_move_resize (widget->window,
allocation->x, allocation->y,
allocation->width, allocation->height);
gdk_window_move_resize (tree_view->priv->header_window,
0, 0,
MAX (tree_view->priv->width, allocation->width),
tree_view->priv->header_height);
if (tree_view->priv->width < allocation->width)
gdk_window_resize (tree_view->priv->bin_window,
allocation->width,
tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view));
_gtk_tree_view_update_col_width (tree_view);
}
gtk_tree_view_size_allocate_buttons (widget);
tree_view->priv->hadjustment->page_size = allocation->width;
tree_view->priv->hadjustment->page_increment = allocation->width / 2;
tree_view->priv->hadjustment->lower = 0;
tree_view->priv->hadjustment->upper = tree_view->priv->width;
if (tree_view->priv->hadjustment->value + allocation->width > tree_view->priv->width)
tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
gtk_signal_emit_by_name (GTK_OBJECT (tree_view->priv->hadjustment), "changed");
tree_view->priv->vadjustment->page_size = allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view);
tree_view->priv->vadjustment->page_increment = (allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
tree_view->priv->vadjustment->lower = 0;
tree_view->priv->vadjustment->upper = tree_view->priv->height;
if (tree_view->priv->vadjustment->value + allocation->height > tree_view->priv->height)
gtk_adjustment_set_value (tree_view->priv->vadjustment,
MAX (tree_view->priv->height - allocation->height, 0));
gtk_signal_emit_by_name (GTK_OBJECT (tree_view->priv->vadjustment), "changed");
}
GdkPixmap*
gtk_tree_view_create_row_drag_icon (GtkTreeView *tree_view,
GtkTreePath *path)
{
GtkTreeIter iter;
GtkRBTree *tree;
GtkRBNode *node;
GtkCellRenderer *cell;
gint i;
gint cell_offset;
GList *list;
GdkRectangle background_area;
GtkWidget *widget;
gint depth;
/* start drawing inside the black outline */
gint x = 1, y = 1;
GdkDrawable *drawable;
gint bin_window_width;
widget = GTK_WIDGET (tree_view);
depth = gtk_tree_path_get_depth (path);
_gtk_tree_view_find_node (tree_view,
path,
&tree,
&node);
if (tree == NULL)
return NULL;
if (!gtk_tree_model_get_iter (tree_view->priv->model,
&iter,
path))
return NULL;
cell_offset = x;
background_area.y = y;
background_area.height = BACKGROUND_HEIGHT (node);
gdk_drawable_get_size (tree_view->priv->bin_window,
&bin_window_width, NULL);
drawable = gdk_pixmap_new (tree_view->priv->bin_window,
bin_window_width + 2,
background_area.height + 2,
-1);
gdk_draw_rectangle (drawable,
widget->style->base_gc[GTK_WIDGET_STATE (widget)],
TRUE,
0, 0,
bin_window_width + 2,
background_area.height + 2);
gdk_draw_rectangle (drawable,
widget->style->black_gc,
FALSE,
0, 0,
bin_window_width + 1,
background_area.height + 1);
for (i = 0, list = tree_view->priv->columns; i < tree_view->priv->n_columns; i++, list = list->next)
{
GtkTreeViewColumn *column = list->data;
GdkRectangle cell_area;
gboolean visible;
if (!column->visible)
continue;
cell = column->cell;
gtk_tree_view_column_set_cell_data (column,
tree_view->priv->model,
&iter);
background_area.x = cell_offset;
background_area.width = column->displayed_width;
cell_area = background_area;
cell_area.y += TREE_VIEW_VERTICAL_SEPARATOR / 2;
cell_area.height -= TREE_VIEW_VERTICAL_SEPARATOR;
if (i == tree_view->priv->expander_column &&
TREE_VIEW_DRAW_EXPANDERS(tree_view))
{
cell_area.x += depth * tree_view->priv->tab_offset;
cell_area.width -= depth * tree_view->priv->tab_offset;
}
g_object_get (G_OBJECT (cell), "visible", &visible, NULL);
if (visible)
gtk_cell_renderer_render (cell,
drawable,
widget,
&background_area,
&cell_area,
NULL,
0);
cell_offset += column->displayed_width;
}
return drawable;
}
/* Warning: Very scary function.
* Modify at your own risk
*/
static gboolean
gtk_tree_view_bin_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkTreeView *tree_view;
GtkTreePath *path;
GtkRBTree *tree;
GList *list;
GtkRBNode *node;
GtkRBNode *cursor = NULL;
GtkRBTree *cursor_tree = NULL;
GtkRBNode *drag_highlight = NULL;
GtkRBTree *drag_highlight_tree = NULL;
GtkTreeIter iter;
GtkCellRenderer *cell;
gint new_y;
gint y_offset, x_offset, cell_offset;
gint i, max_height;
gint depth;
GdkRectangle background_area;
GdkRectangle cell_area;
guint flags;
gint highlight_x;
gint bin_window_width;
GtkTreePath *cursor_path;
GtkTreePath *drag_dest_path;
GList *last_column;
g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
tree_view = GTK_TREE_VIEW (widget);
if (tree_view->priv->tree == NULL)
return TRUE;
gtk_tree_view_check_dirty (GTK_TREE_VIEW (widget));
/* we want to account for a potential HEADER offset.
* That is, if the header exists, we want to offset our event by its
* height to find the right node.
*/
new_y = (event->area.y<TREE_VIEW_HEADER_HEIGHT (tree_view))?TREE_VIEW_HEADER_HEIGHT (tree_view):event->area.y;
/* y_offset is the */
y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree,
TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, new_y),
&tree,
&node) + new_y - event->area.y;
if (node == NULL)
return TRUE;
/* find the path for the node */
path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
tree,
node);
gtk_tree_model_get_iter (tree_view->priv->model,
&iter,
path);
depth = gtk_tree_path_get_depth (path);
gtk_tree_path_free (path);
cursor_path = NULL;
drag_dest_path = NULL;
if (tree_view->priv->cursor)
cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
if (cursor_path)
_gtk_tree_view_find_node (tree_view, cursor_path,
&cursor_tree, &cursor);
if (tree_view->priv->drag_dest_row)
drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
if (drag_dest_path)
_gtk_tree_view_find_node (tree_view, drag_dest_path,
&drag_highlight_tree, &drag_highlight);
gdk_drawable_get_size (tree_view->priv->bin_window,
&bin_window_width, NULL);
for (last_column = g_list_last (tree_view->priv->columns);
last_column &&
!(GTK_TREE_VIEW_COLUMN (last_column->data)->visible) &&
GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (last_column->data)->button);
last_column = last_column->prev)
;
/* Actually process the expose event. To do this, we want to
* start at the first node of the event, and walk the tree in
* order, drawing each successive node.
*/
do
{
/* Need to think about this more.
if (tree_view->priv->show_expanders)
max_height = MAX (TREE_VIEW_EXPANDER_MIN_HEIGHT, GTK_RBNODE_GET_HEIGHT (node));
else
*/
gboolean parity;
max_height = BACKGROUND_HEIGHT (node);
x_offset = -event->area.x;
cell_offset = 0;
highlight_x = 0; /* should match x coord of first cell */
background_area.y = y_offset + event->area.y;
background_area.height = max_height;
flags = 0;
if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
flags |= GTK_CELL_RENDERER_PRELIT;
parity = _gtk_rbtree_node_find_parity (tree, node);
if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
flags |= GTK_CELL_RENDERER_SELECTED;
for (i = 0, list = tree_view->priv->columns; i < tree_view->priv->n_columns; i++, list = list->next)
{
GtkTreeViewColumn *column = list->data;
const gchar *detail = NULL;
if (!column->visible)
continue;
if (cell_offset > event->area.x + event->area.width ||
cell_offset + column->displayed_width < event->area.x)
{
cell_offset += column->displayed_width;
continue;
}
if (column->show_sort_indicator)
flags |= GTK_CELL_RENDERER_SORTED;
else
flags &= ~GTK_CELL_RENDERER_SORTED;
cell = column->cell;
gtk_tree_view_column_set_cell_data (column,
tree_view->priv->model,
&iter);
background_area.x = cell_offset;
background_area.width = column->displayed_width;
cell_area = background_area;
cell_area.y += TREE_VIEW_VERTICAL_SEPARATOR / 2;
cell_area.height -= TREE_VIEW_VERTICAL_SEPARATOR;
/* Select the detail for drawing the cell. relevant
* factors are parity, sortedness, and whether to
* display rules.
*/
/* FIXME when we have style properties, clean this up.
*/
if (tree_view->priv->has_rules)
{
if (flags & GTK_CELL_RENDERER_SORTED)
{
if (parity)
detail = "cell_odd_ruled_sorted";
else
detail = "cell_even_ruled_sorted";
}
else
{
if (parity)
detail = "cell_odd_ruled";
else
detail = "cell_even_ruled";
}
}
else
{
if (flags & GTK_CELL_RENDERER_SORTED)
{
if (parity)
detail = "cell_odd_sorted";
else
detail = "cell_even_sorted";
}
else
{
if (parity)
detail = "cell_odd";
else
detail = "cell_even";
}
}
g_assert (detail);
/* Draw background */
gtk_paint_flat_box (widget->style,
event->window,
(flags & GTK_CELL_RENDERER_SELECTED) ?
GTK_STATE_SELECTED : GTK_STATE_NORMAL,
GTK_SHADOW_NONE,
&event->area,
widget,
detail,
background_area.x,
background_area.y,
background_area.width,
background_area.height);
if (i == tree_view->priv->expander_column &&
TREE_VIEW_DRAW_EXPANDERS(tree_view))
{
gboolean visible;
cell_area.x += depth*tree_view->priv->tab_offset;
cell_area.width -= depth*tree_view->priv->tab_offset;
/* If we have an expander column, the highlight underline
* starts with that column, so that it indicates which
* level of the tree we're dropping at.
*/
highlight_x = cell_area.x;
g_object_get (G_OBJECT (cell), "visible", &visible, NULL);
if (visible)
gtk_cell_renderer_render (cell,
event->window,
widget,
&background_area,
&cell_area,
&event->area,
flags);
if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
{
gint x, y;
gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, 0);
gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
tree,
node,
x, y);
}
}
else
{
gboolean visible;
g_object_get (G_OBJECT (cell), "visible", &visible, NULL);
if (visible)
gtk_cell_renderer_render (cell,
event->window,
widget,
&background_area,
&cell_area,
&event->area,
flags);
}
cell_offset += column->displayed_width;
}
if (node == cursor && GTK_WIDGET_HAS_FOCUS (widget))
gtk_tree_view_draw_focus (widget);
if (node == drag_highlight)
{
/* Draw indicator for the drop
*/
gint highlight_y = -1;
GtkRBTree *tree = NULL;
GtkRBNode *node = NULL;
gint width;
switch (tree_view->priv->drag_dest_pos)
{
case GTK_TREE_VIEW_DROP_BEFORE:
highlight_y = background_area.y - TREE_VIEW_VERTICAL_SEPARATOR/2;
break;
case GTK_TREE_VIEW_DROP_AFTER:
highlight_y = background_area.y + background_area.height + TREE_VIEW_VERTICAL_SEPARATOR/2;
break;
case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
_gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
if (tree == NULL)
break;
gdk_drawable_get_size (tree_view->priv->bin_window,
&width, NULL);
gtk_paint_focus (widget->style,
tree_view->priv->bin_window,
NULL,
widget,
"add-mode",
0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node),
width - 1, BACKGROUND_HEIGHT (node) - 1);
break;
}
if (highlight_y >= 0)
{
gdk_draw_line (event->window,
widget->style->black_gc,
highlight_x,
highlight_y,
bin_window_width - highlight_x,
highlight_y);
}
}
y_offset += max_height;
if (node->children)
{
GtkTreeIter parent = iter;
gboolean has_child;
tree = node->children;
node = tree->root;
g_assert (node != tree->nil);
while (node->left != tree->nil)
node = node->left;
has_child = gtk_tree_model_iter_children (tree_view->priv->model,
&iter,
&parent);
cell = gtk_tree_view_get_column (tree_view, 0)->cell;
depth++;
/* Sanity Check! */
TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
}
else
{
gboolean done = FALSE;
do
{
node = _gtk_rbtree_next (tree, node);
if (node != NULL)
{
gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
cell = gtk_tree_view_get_column (tree_view, 0)->cell;
done = TRUE;
/* Sanity Check! */
TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
}
else
{
GtkTreeIter parent_iter = iter;
gboolean has_parent;
node = tree->parent_node;
tree = tree->parent_tree;
if (tree == NULL)
/* we've run out of tree. It's okay to return though, as
* we'd only break out of the while loop below. */
return TRUE;
has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
&iter,
&parent_iter);
depth--;
/* Sanity check */
TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
}
}
while (!done);
}
}
while (y_offset < event->area.height);
if (cursor_path)
gtk_tree_path_free (cursor_path);
if (drag_dest_path)
gtk_tree_path_free (drag_dest_path);
return TRUE;
}
static gboolean
gtk_tree_view_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkTreeView *tree_view;
g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
tree_view = GTK_TREE_VIEW (widget);
if (event->window == tree_view->priv->bin_window)
return gtk_tree_view_bin_expose (widget, event);
return TRUE;
}
static gboolean
coords_are_over_arrow (GtkTreeView *tree_view,
GtkRBTree *tree,
GtkRBNode *node,
/* these are in tree window coords */
gint x,
gint y)
{
GdkRectangle arrow;
gint x2;
if (!GTK_WIDGET_REALIZED (tree_view))
return FALSE;
if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
return FALSE;
arrow.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
arrow.height = BACKGROUND_HEIGHT (node);
gtk_tree_view_get_arrow_xrange (tree_view, &arrow.x, &x2);
arrow.width = x2 - arrow.x;
return (x >= arrow.x &&
x < (arrow.x + arrow.height) &&
y >= arrow.y &&
y < (arrow.y + arrow.height));
}
static void
do_unprelight (GtkTreeView *tree_view,
/* these are in tree window coords */
gint x,
gint y)
{
if (tree_view->priv->prelight_node == NULL)
return;
GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node, GTK_RBNODE_IS_PRELIT);
if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT) &&
!coords_are_over_arrow (tree_view,
tree_view->priv->prelight_tree,
tree_view->priv->prelight_node,
x,
y))
/* We need to unprelight the old arrow. */
{
GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
gtk_tree_view_draw_arrow (tree_view,
tree_view->priv->prelight_tree,
tree_view->priv->prelight_node,
x,
y);
}
tree_view->priv->prelight_node = NULL;
tree_view->priv->prelight_tree = NULL;
}
static void
do_prelight (GtkTreeView *tree_view,
GtkRBTree *tree,
GtkRBNode *node,
/* these are in tree window coords */
gint x,
gint y)
{
if (coords_are_over_arrow (tree_view, tree, node, x, y))
GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
tree_view->priv->prelight_node = node;
tree_view->priv->prelight_tree = tree;
GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
}
static void
ensure_unprelighted (GtkTreeView *tree_view)
{
do_unprelight (tree_view, -1000, -1000); /* coords not possibly over an arrow */
}
static gboolean
gtk_tree_view_motion (GtkWidget *widget,
GdkEventMotion *event)
{
GtkTreeView *tree_view;
GtkRBTree *tree;
GtkRBNode *node;
gint new_y;
GtkRBTree *old_prelight_tree;
GtkRBNode *old_prelight_node;
tree_view = (GtkTreeView *) widget;
if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
{
gint x;
gint new_width;
if (event->is_hint || event->window != widget->window)
gtk_widget_get_pointer (widget, &x, NULL);
else
x = event->x;
new_width = gtk_tree_view_new_column_width (GTK_TREE_VIEW (widget), tree_view->priv->drag_pos, &x);
if (x != tree_view->priv->x_drag)
{
gtk_tree_view_column_set_width (gtk_tree_view_get_column (GTK_TREE_VIEW (widget), tree_view->priv->drag_pos), new_width);
}
/* FIXME: Do we need to scroll */
_gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
return FALSE;
}
/* Sanity check it */
if (event->window != tree_view->priv->bin_window)
return FALSE;
if (tree_view->priv->tree == NULL)
return FALSE;
gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
old_prelight_tree = tree_view->priv->prelight_tree;
old_prelight_node = tree_view->priv->prelight_node;
do_unprelight (tree_view, event->x, event->y);
new_y = ((gint)event->y<TREE_VIEW_HEADER_HEIGHT (tree_view))?TREE_VIEW_HEADER_HEIGHT (tree_view):(gint)event->y;
_gtk_rbtree_find_offset (tree_view->priv->tree,
TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, new_y),
&tree,
&node);
if (tree == NULL)
return TRUE;
/* If we are currently pressing down a button, we don't want to prelight anything else. */
if ((tree_view->priv->button_pressed_node != NULL) &&
(tree_view->priv->button_pressed_node != node))
return TRUE;
do_prelight (tree_view, tree, node, event->x, new_y);
if (old_prelight_node != tree_view->priv->prelight_node)
{
if (old_prelight_node)
gtk_tree_view_queue_draw_node (tree_view,
old_prelight_tree,
old_prelight_node,
NULL);
if (tree_view->priv->prelight_node)
gtk_tree_view_queue_draw_node (tree_view,
tree_view->priv->prelight_tree,
tree_view->priv->prelight_node,
NULL);
}
return TRUE;
}
/* FIXME Is this function necessary? Can I get an enter_notify event
* w/o either an expose event or a mouse motion event?
*/
static gboolean
gtk_tree_view_enter_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkTreeView *tree_view;
GtkRBTree *tree;
GtkRBNode *node;
gint new_y;
g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
tree_view = GTK_TREE_VIEW (widget);
/* Sanity check it */
if (event->window != tree_view->priv->bin_window)
return FALSE;
if (tree_view->priv->tree == NULL)
return FALSE;
if ((tree_view->priv->button_pressed_node != NULL) &&
(tree_view->priv->button_pressed_node != node))
return TRUE;
/* find the node internally */
new_y = ((gint)event->y<TREE_VIEW_HEADER_HEIGHT (tree_view))?TREE_VIEW_HEADER_HEIGHT (tree_view):(gint)event->y;
_gtk_rbtree_find_offset (tree_view->priv->tree,
TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, new_y),
&tree,
&node);
if (node == NULL)
return FALSE;
do_prelight (tree_view, tree, node, event->x, new_y);
if (tree_view->priv->prelight_node)
gtk_tree_view_queue_draw_node (tree_view,
tree_view->priv->prelight_tree,
tree_view->priv->prelight_node,
NULL);
return TRUE;
}
static gboolean
gtk_tree_view_leave_notify (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkTreeView *tree_view;
g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
tree_view = GTK_TREE_VIEW (widget);
if (tree_view->priv->prelight_node)
gtk_tree_view_queue_draw_node (tree_view,
tree_view->priv->prelight_tree,
tree_view->priv->prelight_node,
NULL);
ensure_unprelighted (tree_view);
return TRUE;
}
static gboolean
gtk_tree_view_button_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkTreeView *tree_view;
GList *list;
GtkTreeViewColumn *column = NULL;
gint i;
GdkRectangle background_area;
GdkRectangle cell_area;
g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
tree_view = GTK_TREE_VIEW (widget);
if (event->window == tree_view->priv->bin_window)
{
GtkRBNode *node;
GtkRBTree *tree;
GtkTreePath *path;
gchar *path_string;
gint depth;
gint new_y;
gint y_offset;
GtkTreeViewColumn *column = NULL;
if (!GTK_WIDGET_HAS_FOCUS (widget))
gtk_widget_grab_focus (widget);
GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
/* are we in an arrow? */
if (tree_view->priv->prelight_node &&
GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
{
if (event->button == 1)
{
gtk_grab_add (widget);
tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
tree_view->priv->prelight_tree,
tree_view->priv->prelight_node,
event->x,
event->y);
}
return TRUE;
}
/* find the node that was clicked */
new_y = ((gint)event->y<TREE_VIEW_HEADER_HEIGHT (tree_view))?TREE_VIEW_HEADER_HEIGHT (tree_view):(gint)event->y;
y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree,
TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, new_y),
&tree,
&node) + new_y - (gint)event->y;
if (node == NULL)
/* We clicked in dead space */
return TRUE;
/* Get the path and the node */
path = _gtk_tree_view_find_path (tree_view, tree, node);
depth = gtk_tree_path_get_depth (path);
background_area.y = y_offset + event->y + TREE_VIEW_VERTICAL_SEPARATOR;
background_area.height = GTK_RBNODE_GET_HEIGHT (node) - TREE_VIEW_VERTICAL_SEPARATOR;
background_area.x = 0;
/* Let the cell have a chance at selecting it. */
for (i = 0, list = tree_view->priv->columns; i < tree_view->priv->n_columns; i++, list = list->next)
{
GtkCellRenderer *cell;
GtkTreeIter iter;
gboolean visible;
gboolean can_activate;
column = list->data;
if (!column->visible)
continue;
background_area.width = column->displayed_width;
if (i == tree_view->priv->expander_column &&
TREE_VIEW_DRAW_EXPANDERS(tree_view))
{
cell_area = background_area;
cell_area.x += depth*tree_view->priv->tab_offset;
cell_area.width -= depth*tree_view->priv->tab_offset;
}
else
{
cell_area = background_area;
}
cell = column->cell;
if ((background_area.x > (gint) event->x) ||
(background_area.y > (gint) event->y) ||
(background_area.x + background_area.width <= (gint) event->x) ||
(background_area.y + background_area.height <= (gint) event->y))
{
background_area.x += background_area.width;
continue;
}
gtk_tree_model_get_iter (tree_view->priv->model,
&iter,
path);
gtk_tree_view_column_set_cell_data (column,
tree_view->priv->model,
&iter);
path_string = gtk_tree_path_to_string (path);
g_object_get (G_OBJECT (cell),
"visible", &visible,
"can_activate", &can_activate,
NULL);
if (visible &&
can_activate &&
gtk_cell_renderer_event (cell, (GdkEvent *)event,
widget, path_string,
&background_area,
&cell_area, 0))
{
g_free (path_string);
gtk_tree_path_free (path);
return TRUE;
}
else
{
g_free (path_string);
break;
}
}
if (column == NULL)
return FALSE;
/* Save press to possibly begin a drag
*/
if (tree_view->priv->pressed_button < 0)
{
tree_view->priv->pressed_button = event->button;
tree_view->priv->press_start_x = event->x;
tree_view->priv->press_start_y = event->y;
}
/* Handle the selection */
if (tree_view->priv->selection == NULL)
tree_view->priv->selection =
_gtk_tree_selection_new_with_tree_view (tree_view);
_gtk_tree_selection_internal_select_node (tree_view->priv->selection,
node,
tree,
path,
event->state);
if (event->button == 1 && event->type == GDK_2BUTTON_PRESS)
gtk_tree_view_row_activated (tree_view, path, column);
gtk_tree_path_free (path);
return TRUE;
}
for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
{
column = list->data;
if (event->window == column->window &&
column->column_type == GTK_TREE_VIEW_COLUMN_RESIZEABLE &&
column->window)
{
gpointer drag_data;
if (gdk_pointer_grab (column->window, FALSE,
GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON1_MOTION_MASK |
GDK_BUTTON_RELEASE_MASK,
NULL, NULL, event->time))
return FALSE;
gtk_grab_add (widget);
GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
/* block attached dnd signal handler */
drag_data = gtk_object_get_data (GTK_OBJECT (widget), "gtk-site-data");
if (drag_data)
gtk_signal_handler_block_by_data (GTK_OBJECT (widget), drag_data);
if (!GTK_WIDGET_HAS_FOCUS (widget))
gtk_widget_grab_focus (widget);
tree_view->priv->drag_pos = i;
tree_view->priv->x_drag = (column->button->allocation.x + column->button->allocation.width);
}
}
return TRUE;
}
static gboolean
gtk_tree_view_button_release (GtkWidget *widget,
GdkEventButton *event)
{
GtkTreeView *tree_view;
g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
tree_view = GTK_TREE_VIEW (widget);
if (tree_view->priv->pressed_button == event->button)
tree_view->priv->pressed_button = -1;
if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
{
gpointer drag_data;
gint width;
gint x;
gint i;
i = tree_view->priv->drag_pos;
tree_view->priv->drag_pos = -1;
/* unblock attached dnd signal handler */
drag_data = gtk_object_get_data (GTK_OBJECT (widget), "gtk-site-data");
if (drag_data)
gtk_signal_handler_unblock_by_data (GTK_OBJECT (widget), drag_data);
GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
gtk_widget_get_pointer (widget, &x, NULL);
gtk_grab_remove (widget);
gdk_pointer_ungrab (event->time);
width = gtk_tree_view_new_column_width (GTK_TREE_VIEW (widget), i, &x);
gtk_tree_view_column_set_width (gtk_tree_view_get_column (GTK_TREE_VIEW (widget), i), width);
return FALSE;
}
if (tree_view->priv->button_pressed_node == NULL)
return FALSE;
if (event->button == 1)
{
gtk_grab_remove (widget);
if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
{
GtkTreePath *path;
GtkTreeIter iter;
/* Actually activate the node */
if (tree_view->priv->button_pressed_node->children == NULL)
{
GtkTreeIter child;
path = _gtk_tree_view_find_path (GTK_TREE_VIEW (widget),
tree_view->priv->button_pressed_tree,
tree_view->priv->button_pressed_node);
tree_view->priv->button_pressed_node->children = _gtk_rbtree_new ();
tree_view->priv->button_pressed_node->children->parent_tree = tree_view->priv->button_pressed_tree;
tree_view->priv->button_pressed_node->children->parent_node = tree_view->priv->button_pressed_node;
gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
if (gtk_tree_model_iter_children (tree_view->priv->model, &child, &iter))
gtk_tree_view_build_tree (tree_view,
tree_view->priv->button_pressed_node->children,
&child,
gtk_tree_path_get_depth (path) + 1,
FALSE,
GTK_WIDGET_REALIZED (widget));
}
else
{
path = _gtk_tree_view_find_path (GTK_TREE_VIEW (widget),
tree_view->priv->button_pressed_node->children,
tree_view->priv->button_pressed_node->children->root);
gtk_tree_model_get_iter (tree_view->priv->model,
&iter,
path);
gtk_tree_view_discover_dirty (GTK_TREE_VIEW (widget),
tree_view->priv->button_pressed_node->children,
&iter,
gtk_tree_path_get_depth (path));
gtk_tree_view_unref_tree (GTK_TREE_VIEW (widget),
tree_view->priv->button_pressed_node->children);
_gtk_rbtree_remove (tree_view->priv->button_pressed_node->children);
}
gtk_tree_path_free (path);
_gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
}
tree_view->priv->button_pressed_node = NULL;
}
return TRUE;
}
static void
gtk_tree_view_set_focus_child (GtkContainer *container,
GtkWidget *child)
{
GtkTreeView *tree_view = GTK_TREE_VIEW (container);
GList *list;
for (list = tree_view->priv->columns; list; list = list->next)
{
if (GTK_TREE_VIEW_COLUMN (list->data)->button == child)
{
tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
break;
}
}
(* parent_class->set_focus_child) (container, child);
}
static void
gtk_tree_view_draw_focus (GtkWidget *widget)
{
GtkTreeView *tree_view;
GtkTreePath *cursor_path;
GtkRBTree *tree = NULL;
GtkRBNode *node = NULL;
gint x, y;
gint width, height;
g_return_if_fail (GTK_IS_TREE_VIEW (widget));
tree_view = GTK_TREE_VIEW (widget);
if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS))
return;
if (tree_view->priv->cursor == NULL)
return;
cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
if (cursor_path == NULL)
return;
_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node);
if (tree == NULL)
{
gtk_tree_path_free (cursor_path);
return;
}
gdk_drawable_get_size (tree_view->priv->bin_window,
&width, NULL);
x = 0;
y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
gdk_drawable_get_size (tree_view->priv->bin_window,
&width, NULL);
width = width - 1;
height = BACKGROUND_HEIGHT (node) - 1;
if (tree_view->priv->focus_column != NULL)
{
gboolean visible;
gboolean can_focus;
g_object_get (G_OBJECT (tree_view->priv->focus_column->cell),
"can_activate", &can_focus,
"visible", &visible,
NULL);
if (can_focus && visible)
{
GtkTreeIter iter;
GdkRectangle cell_area;
gint x_offset;
gint y_offset;
cell_area.x = tree_view->priv->focus_column->button->allocation.x;
cell_area.y = y;
cell_area.width = tree_view->priv->focus_column->displayed_width;
cell_area.height = CELL_HEIGHT (node);
gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
gtk_tree_view_column_set_cell_data (tree_view->priv->focus_column, tree_view->priv->model, &iter);
gtk_cell_renderer_get_size (tree_view->priv->focus_column->cell, GTK_WIDGET (tree_view), &cell_area, &x_offset, &y_offset, &width, &height);
width += 2;
height += 2;
x = cell_area.x + x_offset - 1;
y = cell_area.y + y_offset - 1 + TREE_VIEW_VERTICAL_SEPARATOR/2;
}
}
gtk_paint_focus (widget->style,
tree_view->priv->bin_window,
NULL,
widget,
"add-mode",
x, y, width, height);
gtk_tree_path_free (cursor_path);
}
static gint
gtk_tree_view_focus_in (GtkWidget *widget,
GdkEventFocus *event)
{
GtkTreeView *tree_view;
g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
tree_view = GTK_TREE_VIEW (widget);
GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
/* FIXME don't redraw so much */
gtk_widget_queue_draw (widget);
return FALSE;
}
static gint
gtk_tree_view_focus_out (GtkWidget *widget,
GdkEventFocus *event)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
/* FIXME don't redraw so much */
gtk_widget_queue_draw (widget);
return FALSE;
}
/* Returns TRUE if the focus is within the headers, after the focus operation is
* done
*/
static gboolean
gtk_tree_view_header_focus (GtkTreeView *tree_view,
GtkDirectionType dir)
{
GtkWidget *focus_child;
GtkContainer *container;
GList *last_column, *first_column;
GList *tmp_list;
if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
return FALSE;
focus_child = GTK_CONTAINER (tree_view)->focus_child;
container = GTK_CONTAINER (tree_view);
for (last_column = g_list_last (tree_view->priv->columns);
last_column &&
!(GTK_TREE_VIEW_COLUMN (last_column->data)->visible) &&
GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (last_column->data)->button);
last_column = last_column->prev);
for (first_column = tree_view->priv->columns;
first_column &&
!(GTK_TREE_VIEW_COLUMN (first_column->data)->visible) &&
GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (first_column->data)->button);
first_column = first_column->next);
/* No headers are visible, or are focusable. We can't focus in or out.
*/
if (last_column == NULL)
return FALSE;
switch (dir)
{
case GTK_DIR_TAB_BACKWARD:
case GTK_DIR_TAB_FORWARD:
case GTK_DIR_UP:
case GTK_DIR_DOWN:
if (focus_child == NULL)
{
if (tree_view->priv->focus_column != NULL)
focus_child = tree_view->priv->focus_column->button;
else
focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
gtk_widget_grab_focus (focus_child);
break;
}
return FALSE;
case GTK_DIR_LEFT:
case GTK_DIR_RIGHT:
if (focus_child == NULL)
{
if (tree_view->priv->focus_column != NULL)
focus_child = tree_view->priv->focus_column->button;
else if (dir == GTK_DIR_LEFT)
focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
else
focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
gtk_widget_grab_focus (focus_child);
break;
}
if (gtk_container_focus (GTK_CONTAINER (focus_child), dir))
{
/* The focus moves inside the button. */
/* This is probably a great example of bad UI */
break;
}
/* We need to move the focus among the row of buttons. */
for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
break;
if (tmp_list == first_column && dir == GTK_DIR_LEFT)
{
focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
gtk_widget_grab_focus (focus_child);
break;
}
else if (tmp_list == last_column && dir == GTK_DIR_RIGHT)
{
focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
gtk_widget_grab_focus (focus_child);
break;
}
while (tmp_list)
{
GtkTreeViewColumn *column;
if (dir == GTK_DIR_RIGHT)
tmp_list = tmp_list->next;
else
tmp_list = tmp_list->prev;
if (tmp_list == NULL)
{
g_warning ("Internal button not found");
break;
}
column = tmp_list->data;
if (column->button &&
column->visible &&
GTK_WIDGET_CAN_FOCUS (column->button))
{
focus_child = column->button;
gtk_widget_grab_focus (column->button);
break;
}
}
break;
default:
g_assert_not_reached ();
break;
}
/* if focus child is non-null, we assume it's been set to the current focus child
*/
if (focus_child)
{
for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
break;
tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
/* If the following isn't true, then the view is smaller then the scrollpane.
*/
if ((focus_child->allocation.x + focus_child->allocation.width) <=
(tree_view->priv->hadjustment->upper))
{
/* Scroll to the button, if needed */
if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) <
(focus_child->allocation.x + focus_child->allocation.width))
gtk_adjustment_set_value (tree_view->priv->hadjustment,
focus_child->allocation.x + focus_child->allocation.width -
tree_view->priv->hadjustment->page_size);
else if (tree_view->priv->hadjustment->value > focus_child->allocation.x)
gtk_adjustment_set_value (tree_view->priv->hadjustment,
focus_child->allocation.x);
}
}
return (focus_child != NULL);
}
/* WARNING: Somewhat scary function */
/* We make the assumption that if container->focus_child != NULL, the focus must
* be in the header. For now, this is accurate. It may not be in the future.
*/
/* The sordid relationship between focus_column and scroll_column:
*
* The focus_column represents the column that currently has keyboard focus, and
* is used when navigating columns by keyboard. scroll_column is used for
* handling scrolling by keyboard, such that in cases.
*/
static gint
gtk_tree_view_focus (GtkContainer *container,
GtkDirectionType direction)
{
GtkTreeView *tree_view;
GtkWidget *focus_child;
GdkEvent *event;
GtkRBTree *cursor_tree;
GtkRBNode *cursor_node;
GtkTreePath *cursor_path;
g_return_val_if_fail (GTK_IS_TREE_VIEW (container), FALSE);
g_return_val_if_fail (GTK_WIDGET_VISIBLE (container), FALSE);
tree_view = GTK_TREE_VIEW (container);
if (!GTK_WIDGET_IS_SENSITIVE (container))
return FALSE;
focus_child = container->focus_child;
/* Case 1. Headers have focus. */
if (focus_child)
{
switch (direction)
{
case GTK_DIR_LEFT:
case GTK_DIR_RIGHT:
return (gtk_tree_view_header_focus (tree_view, direction));
case GTK_DIR_TAB_BACKWARD:
case GTK_DIR_UP:
return FALSE;
case GTK_DIR_TAB_FORWARD:
case GTK_DIR_DOWN:
if (tree_view->priv->tree == NULL)
return FALSE;
GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
gtk_widget_grab_focus (GTK_WIDGET (container));
if (tree_view->priv->selection == NULL)
tree_view->priv->selection =
_gtk_tree_selection_new_with_tree_view (tree_view);
/* if there is no keyboard focus yet, we select the first node
*/
cursor_path = NULL;
if (tree_view->priv->cursor)
cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
if (cursor_path == NULL)
{
GtkTreePath *tmp_path = gtk_tree_path_new_root ();
if (tree_view->priv->cursor)
gtk_tree_row_reference_free (tree_view->priv->cursor);
tree_view->priv->cursor =
gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, tmp_path);
cursor_path = tmp_path;
}
gtk_tree_selection_select_path (tree_view->priv->selection,
cursor_path);
gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
gtk_tree_path_free (cursor_path);
return TRUE;
}
}
/* Case 2. We don't have focus at all. */
if (!GTK_WIDGET_HAS_FOCUS (container))
{
if ((direction == GTK_DIR_TAB_FORWARD) ||
(direction == GTK_DIR_RIGHT) ||
(direction == GTK_DIR_DOWN) ||
(direction == GTK_DIR_LEFT) ||
(tree_view->priv->tree == NULL))
return gtk_tree_view_header_focus (tree_view, direction);
/* The headers didn't want the focus, so we take it. */
GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
gtk_widget_grab_focus (GTK_WIDGET (container));
if (tree_view->priv->selection == NULL)
tree_view->priv->selection =
_gtk_tree_selection_new_with_tree_view (tree_view);
cursor_path = NULL;
if (tree_view->priv->cursor)
cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
if (cursor_path == NULL)
{
GtkTreePath *tmp_path = gtk_tree_path_new_root ();
if (tree_view->priv->cursor)
gtk_tree_row_reference_free (tree_view->priv->cursor);
tree_view->priv->cursor =
gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, tmp_path);
cursor_path = tmp_path;
}
gtk_tree_selection_select_path (tree_view->priv->selection,
cursor_path);
gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
gtk_tree_path_free (cursor_path);
return TRUE;
}
/* Case 3. We have focus already. */
if (tree_view->priv->tree == NULL)
return FALSE;
if (direction == GTK_DIR_TAB_BACKWARD)
return (gtk_tree_view_header_focus (tree_view, direction));
else if (direction == GTK_DIR_TAB_FORWARD)
return FALSE;
cursor_path = NULL;
if (tree_view->priv->cursor)
cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
/* Do we have a focus path? We should, unless it was deleted. */
/* in that case, we pick the first one arbitrarily */
if (cursor_path == NULL)
{
GtkTreePath *tmp_path = gtk_tree_path_new_root ();
if (tree_view->priv->cursor)
gtk_tree_row_reference_free (tree_view->priv->cursor);
tree_view->priv->cursor =
gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, tmp_path);
cursor_path = tmp_path;
gtk_tree_selection_select_path (tree_view->priv->selection,
cursor_path);
gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
gtk_tree_path_free (cursor_path);
return TRUE;
}
/* Case 4. We have focus already. Move the cursor. */
if (direction == GTK_DIR_LEFT)
{
gdouble val;
val = tree_view->priv->hadjustment->value - tree_view->priv->hadjustment->page_size/2;
val = MAX (val, 0.0);
gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->hadjustment), val);
gtk_widget_grab_focus (GTK_WIDGET (tree_view));
gtk_tree_path_free (cursor_path);
return TRUE;
}
if (direction == GTK_DIR_RIGHT)
{
gdouble val;
val = tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size/2;
val = MIN (tree_view->priv->hadjustment->upper - tree_view->priv->hadjustment->page_size, val);
gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->hadjustment), val);
gtk_widget_grab_focus (GTK_WIDGET (tree_view));
gtk_tree_path_free (cursor_path);
return TRUE;
}
cursor_tree = NULL;
cursor_node = NULL;
_gtk_tree_view_find_node (tree_view, cursor_path,
&cursor_tree,
&cursor_node);
/* undraw the old row */
gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
gtk_tree_path_free (cursor_path);
cursor_path = NULL;
if (tree_view->priv->cursor)
{
gtk_tree_row_reference_free (tree_view->priv->cursor);
tree_view->priv->cursor = NULL;
}
switch (direction)
{
case GTK_DIR_TAB_BACKWARD:
case GTK_DIR_UP:
_gtk_rbtree_prev_full (cursor_tree,
cursor_node,
&cursor_tree,
&cursor_node);
break;
case GTK_DIR_TAB_FORWARD:
case GTK_DIR_DOWN:
_gtk_rbtree_next_full (cursor_tree,
cursor_node,
&cursor_tree,
&cursor_node);
break;
default:
break;
}
if (cursor_node)
{
GdkModifierType state = 0;
event = gtk_get_current_event ();
if (event)
gdk_event_get_state (event, &state);
if (event)
gdk_event_free (event);
cursor_path = _gtk_tree_view_find_path (tree_view,
cursor_tree,
cursor_node);
if (cursor_path)
{
_gtk_tree_selection_internal_select_node (tree_view->priv->selection,
cursor_node,
cursor_tree,
cursor_path,
state);
tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, cursor_path);
/* draw the newly-selected row */
gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
gtk_tree_path_free (cursor_path);
}
gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
gtk_widget_grab_focus (GTK_WIDGET (tree_view));
return TRUE;
}
/* At this point, we've progressed beyond the edge of the rows. */
if (direction == GTK_DIR_UP)
/* We can't go back anymore. Try the headers */
return (gtk_tree_view_header_focus (tree_view, direction));
/* we've reached the end of the tree. Go on. */
return FALSE;
}
/* Container method
*/
static void
gtk_tree_view_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkTreeView *tree_view;
GtkTreeViewChild *child = NULL;
GList *tmp_list;
g_return_if_fail (GTK_IS_TREE_VIEW (container));
tree_view = GTK_TREE_VIEW (container);
tmp_list = tree_view->priv->children;
while (tmp_list)
{
child = tmp_list->data;
if (child->widget == widget)
{
gtk_widget_unparent (widget);
tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
g_list_free_1 (tmp_list);
g_free (child);
return;
}
tmp_list = tmp_list->next;
}
tmp_list = tree_view->priv->columns;
while (tmp_list)
{
GtkTreeViewColumn *column;
column = tmp_list->data;
if (column->button == widget)
{
gtk_widget_unparent (widget);
return;
}
tmp_list = tmp_list->next;
}
}
static void
gtk_tree_view_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GtkTreeView *tree_view;
GtkTreeViewChild *child = NULL;
GtkTreeViewColumn *column;
GList *tmp_list;
g_return_if_fail (GTK_IS_TREE_VIEW (container));
g_return_if_fail (callback != NULL);
tree_view = GTK_TREE_VIEW (container);
tmp_list = tree_view->priv->children;
while (tmp_list)
{
child = tmp_list->data;
tmp_list = tmp_list->next;
(* callback) (child->widget, callback_data);
}
if (include_internals == FALSE)
return;
for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
{
column = tmp_list->data;
if (column->button)
(* callback) (column->button, callback_data);
}
}
void
gtk_tree_view_row_activated (GtkTreeView *tree_view,
GtkTreePath *path,
GtkTreeViewColumn *column)
{
g_return_if_fail (tree_view != NULL);
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
g_signal_emit (G_OBJECT(tree_view), tree_view_signals[ROW_ACTIVATED], 0, path, column);
}
/* TreeModel Callbacks
*/
static void
gtk_tree_view_changed (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data)
{
GtkTreeView *tree_view = (GtkTreeView *)data;
GtkRBTree *tree;
GtkRBNode *node;
gint height;
gboolean dirty_marked;
gboolean free_path = FALSE;
g_return_if_fail (path != NULL || iter != NULL);
if (path == NULL)
{
path = gtk_tree_model_get_path (model, iter);
free_path = TRUE;
}
else if (iter == NULL)
gtk_tree_model_get_iter (model, iter, path);
if (_gtk_tree_view_find_node (tree_view,
path,
&tree,
&node))
/* We aren't actually showing the node */
goto done;
if (tree == NULL)
goto done;
dirty_marked = gtk_tree_view_discover_dirty_iter (tree_view,
iter,
gtk_tree_path_get_depth (path),
&height);
if (GTK_RBNODE_GET_HEIGHT (node) != height + TREE_VIEW_VERTICAL_SEPARATOR)
{
_gtk_rbtree_node_set_height (tree, node, height + TREE_VIEW_VERTICAL_SEPARATOR);
gtk_widget_queue_resize (GTK_WIDGET (data));
goto done;
}
if (dirty_marked)
gtk_widget_queue_resize (GTK_WIDGET (data));
else
{
gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
}
done:
if (free_path)
gtk_tree_path_free (path);
}
static void
gtk_tree_view_inserted (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data)
{
GtkTreeView *tree_view = (GtkTreeView *) data;
gint *indices;
GtkRBTree *tmptree, *tree;
GtkRBNode *tmpnode = NULL;
gint max_height;
gint depth;
gint i = 0;
gboolean free_path = FALSE;
if (tree_view->priv->tree == NULL)
tree_view->priv->tree = _gtk_rbtree_new ();
tmptree = tree = tree_view->priv->tree;
g_return_if_fail (path != NULL || iter != NULL);
if (path == NULL)
{
path = gtk_tree_model_get_path (model, iter);
free_path = TRUE;
}
else if (iter == NULL)
gtk_tree_model_get_iter (model, iter, path);
/* Update all row-references */
gtk_tree_row_reference_inserted (G_OBJECT (data), path);
depth = gtk_tree_path_get_depth (path);
indices = gtk_tree_path_get_indices (path);
/* First, find the parent tree */
while (i < depth - 1)
{
if (tmptree == NULL)
{
/* We aren't showing the node */
goto done;
}
tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
if (tmpnode == NULL)
{
g_warning ("A node was inserted with a parent that's not in the tree.\n" \
"This possibly means that a GtkTreeModel inserted a child node\n" \
"before the parent was inserted.");
goto done;
}
else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
{
/* FIXME enforce correct behavior on model, probably */
/* In theory, the model should have emitted has_child_toggled here. We
* try to catch it anyway, just to be safe, in case the model hasn't.
*/
GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
tree,
tmpnode);
gtk_tree_view_has_child_toggled (model, tmppath, NULL, data);
gtk_tree_path_free (tmppath);
goto done;
}
tmptree = tmpnode->children;
tree = tmptree;
i++;
}
if (tree == NULL)
goto done;
/* ref the node */
gtk_tree_model_ref_node (tree_view->priv->model, iter);
max_height = gtk_tree_view_insert_iter_height (tree_view,
tree,
iter,
depth);
if (indices[depth - 1] == 0)
{
tmpnode = _gtk_rbtree_find_count (tree, 1);
_gtk_rbtree_insert_before (tree, tmpnode, max_height);
}
else
{
tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
_gtk_rbtree_insert_after (tree, tmpnode, max_height);
}
_gtk_tree_view_update_size (tree_view);
done:
if (free_path)
gtk_tree_path_free (path);
}
static void
gtk_tree_view_has_child_toggled (GtkTreeModel *model,
GtkTreePath *path,
GtkTreeIter *iter,
gpointer data)
{
GtkTreeView *tree_view = (GtkTreeView *)data;
GtkTreeIter real_iter;
gboolean has_child;
GtkRBTree *tree;
GtkRBNode *node;
gboolean free_path = FALSE;
g_return_if_fail (path != NULL || iter != NULL);
if (iter)
real_iter = *iter;
if (path == NULL)
{
path = gtk_tree_model_get_path (model, iter);
free_path = TRUE;
}
else if (iter == NULL)
gtk_tree_model_get_iter (model, &real_iter, path);
if (_gtk_tree_view_find_node (tree_view,
path,
&tree,
&node))
/* We aren't actually showing the node */
goto done;
if (tree == NULL)
goto done;
has_child = gtk_tree_model_iter_has_child (model, &real_iter);
/* Sanity check.
*/
if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
goto done;
if (has_child)
GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
else
GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
if (has_child && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
{
GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS))
{
GList *list;
for (list = tree_view->priv->columns; list; list = list->next)
if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
{
GTK_TREE_VIEW_COLUMN (list->data)->dirty = TRUE;
break;
}
}
gtk_widget_queue_resize (GTK_WIDGET (tree_view));
}
else
{
/* FIXME: Just redraw the node */
gtk_widget_queue_draw (GTK_WIDGET (tree_view));
}
done:
if (free_path)
gtk_tree_path_free (path);
}
static void
gtk_tree_view_deleted (GtkTreeModel *model,
GtkTreePath *path,
gpointer data)
{
GtkTreeView *tree_view = (GtkTreeView *)data;
GtkRBTree *tree;
GtkRBNode *node;
GList *list;
g_return_if_fail (path != NULL);
if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
return;
if (tree == NULL)
return;
gtk_tree_row_reference_deleted (G_OBJECT (data), path);
/* next, update the selection */
if (tree_view->priv->anchor)
{
GtkTreePath *anchor_path;
/* the row reference may not have been updated yet. If it has not,
* then anchor_path and path being equal indicates that the anchor
* row was deleted. If it has, then anchor_path == NULL indicates the
* the anchor row was deleted.
*/
anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
if (anchor_path == NULL ||
gtk_tree_path_compare (path, anchor_path) == 0)
{
if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED) &&
tree_view->priv->selection)
gtk_signal_emit_by_name (GTK_OBJECT (tree_view->priv->selection),
"selection_changed");
}
if (anchor_path)
gtk_tree_path_free (anchor_path);
}
for (list = tree_view->priv->columns; list; list = list->next)
if (((GtkTreeViewColumn *)list->data)->visible &&
((GtkTreeViewColumn *)list->data)->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
((GtkTreeViewColumn *)list->data)->dirty = TRUE;
/* Ensure we don't have a dangling pointer to a dead node */
ensure_unprelighted (tree_view);
g_assert (tree_view->priv->prelight_node == NULL);
if (tree->root->count == 1)
{
if (tree_view->priv->tree == tree)
tree_view->priv->tree = NULL;
_gtk_rbtree_remove (tree);
}
else
{
_gtk_rbtree_remove_node (tree, node);
}
_gtk_tree_view_update_size (GTK_TREE_VIEW (data));
}
static void
gtk_tree_view_reordered (GtkTreeModel *model,
GtkTreePath *parent,
GtkTreeIter *iter,
gint *new_order,
gpointer data)
{
GtkTreeView *tree_view = GTK_TREE_VIEW (data);
GtkRBTree *tree;
GtkRBNode *node;
gint len;
len = gtk_tree_model_iter_n_children (model, iter);
if (len < 2)
return;
gtk_tree_row_reference_reordered (G_OBJECT (data),
parent,
iter,
new_order);
if (_gtk_tree_view_find_node (tree_view,
parent,
&tree,
&node))
return;
/* We need to special case the parent path */
if (tree == NULL)
tree = tree_view->priv->tree;
else
tree = node->children;
if (tree == NULL)
return;
/* FIXME: we need to unprelight our tree, if it's prelit. */
_gtk_rbtree_reorder (tree, new_order, len);
gtk_widget_queue_draw (GTK_WIDGET (tree_view));
}
/* Internal tree functions */
static gint
gtk_tree_view_insert_iter_height (GtkTreeView *tree_view,
GtkRBTree *tree,
GtkTreeIter *iter,
gint depth)
{
GtkTreeViewColumn *column;
GtkCellRenderer *cell;
GList *list;
gint max_height = 0;
gint i;
i = 0;
/* do stuff with node */
for (list = tree_view->priv->columns; list; list = list->next)
{
gint height = 0, width = 0;
column = list->data;
if (!column->visible)
continue;
if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
{
++i;
continue;
}
cell = column->cell;
gtk_tree_view_column_set_cell_data (column, tree_view->priv->model, iter);
gtk_cell_renderer_get_size (cell, GTK_WIDGET (tree_view), NULL, NULL, NULL, &width, &height);
max_height = MAX (max_height, TREE_VIEW_VERTICAL_SEPARATOR + height);
if (i == tree_view->priv->expander_column &&
TREE_VIEW_DRAW_EXPANDERS (tree_view))
gtk_tree_view_column_set_width (column,
MAX (column->width, depth * tree_view->priv->tab_offset + width));
else
gtk_tree_view_column_set_width (column,
MAX (column->width, width));
++i;
}
return max_height;
}
static void
gtk_tree_view_build_tree (GtkTreeView *tree_view,
GtkRBTree *tree,
GtkTreeIter *iter,
gint depth,
gboolean recurse,
gboolean calc_bounds)
{
GtkRBNode *temp = NULL;
gint max_height;
do
{
max_height = 0;
if (calc_bounds)
max_height = gtk_tree_view_insert_iter_height (tree_view,
tree,
iter,
depth);
gtk_tree_model_ref_node (tree_view->priv->model, iter);
temp = _gtk_rbtree_insert_after (tree, temp, max_height);
if (recurse)
{
GtkTreeIter child;
if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
{
temp->children = _gtk_rbtree_new ();
temp->children->parent_tree = tree;
temp->children->parent_node = temp;
gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse, calc_bounds);
}
}
if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
{
if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
temp->flags ^= GTK_RBNODE_IS_PARENT;
GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
}
}
while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
}
static void
gtk_tree_view_calc_size (GtkTreeView *tree_view,
GtkRBTree *tree,
GtkTreeIter *iter,
gint depth)
{
GtkRBNode *temp;
GtkTreeIter child;
GtkCellRenderer *cell;
GList *list;
GtkTreeViewColumn *column;
gint max_height;
gint i;
TREE_VIEW_INTERNAL_ASSERT_VOID (tree != NULL);
temp = tree->root;
while (temp->left != tree->nil)
temp = temp->left;
do
{
max_height = 0;
/* Do stuff with node */
for (list = tree_view->priv->columns, i = 0; i < tree_view->priv->n_columns; list = list->next, i++)
{
gint height = 0, width = 0;
column = list->data;
if (!column->visible)
continue;
gtk_tree_view_column_set_cell_data (column, tree_view->priv->model, iter);
cell = column->cell;
gtk_cell_renderer_get_size (cell, GTK_WIDGET (tree_view), NULL, NULL, NULL, &width, &height);
max_height = MAX (max_height, TREE_VIEW_VERTICAL_SEPARATOR + height);
/* FIXME: I'm getting the width of all nodes here. )-: */
if (column->dirty == FALSE)
continue;
if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
{
continue;
}
if (i == tree_view->priv->expander_column &&
TREE_VIEW_DRAW_EXPANDERS (tree_view))
gtk_tree_view_column_set_width (column,
MAX (column->width, depth * tree_view->priv->tab_offset + width));
else
gtk_tree_view_column_set_width (column, MAX (column->width, width));
}
_gtk_rbtree_node_set_height (tree, temp, max_height);
if (temp->children != NULL &&
gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
gtk_tree_view_calc_size (tree_view, temp->children, &child, depth + 1);
temp = _gtk_rbtree_next (tree, temp);
}
while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
}
static gboolean
gtk_tree_view_discover_dirty_iter (GtkTreeView *tree_view,
GtkTreeIter *iter,
gint depth,
gint *height)
{
GtkCellRenderer *cell;
GtkTreeViewColumn *column;
GList *list;
gint i;
gboolean retval = FALSE;
gint tmpheight;
if (height)
*height = 0;
for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
{
gint width;
column = list->data;
if (column->dirty == TRUE || column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
continue;
if (!column->visible)
continue;
cell = column->cell;
gtk_tree_view_column_set_cell_data (column, tree_view->priv->model, iter);
if (height)
{
gtk_cell_renderer_get_size (cell, GTK_WIDGET (tree_view), NULL, NULL, NULL, &width, &tmpheight);
*height = MAX (*height, tmpheight);
}
else
{
gtk_cell_renderer_get_size (cell, GTK_WIDGET (tree_view), NULL, NULL, NULL, &width, NULL);
}
if (i == tree_view->priv->expander_column &&
TREE_VIEW_DRAW_EXPANDERS (tree_view))
{
if (depth * tree_view->priv->tab_offset + width > column->width)
{
column->dirty = TRUE;
retval = TRUE;
}
}
else
{
if (width > column->width)
{
column->dirty = TRUE;
retval = TRUE;
}
}
}
return retval;
}
static void
gtk_tree_view_discover_dirty (GtkTreeView *tree_view,
GtkRBTree *tree,
GtkTreeIter *iter,
gint depth)
{
GtkRBNode *temp = tree->root;
GtkTreeViewColumn *column;
GList *list;
GtkTreeIter child;
gboolean is_all_dirty;
TREE_VIEW_INTERNAL_ASSERT_VOID (tree != NULL);
while (temp->left != tree->nil)
temp = temp->left;
do
{
is_all_dirty = TRUE;
for (list = tree_view->priv->columns; list; list = list->next)
{
column = list->data;
if (column->dirty == FALSE)
{
is_all_dirty = FALSE;
break;
}
}
if (is_all_dirty)
return;
gtk_tree_view_discover_dirty_iter (tree_view,
iter,
depth,
FALSE);
if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter) &&
temp->children != NULL)
gtk_tree_view_discover_dirty (tree_view, temp->children, &child, depth + 1);
temp = _gtk_rbtree_next (tree, temp);
}
while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
}
static void
gtk_tree_view_check_dirty (GtkTreeView *tree_view)
{
GtkTreePath *path;
gboolean dirty = FALSE;
GList *list;
GtkTreeViewColumn *column;
GtkTreeIter iter;
if (!GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_MODEL_SETUP) &&
tree_view->priv->model)
gtk_tree_view_setup_model (tree_view);
for (list = tree_view->priv->columns; list; list = list->next)
{
column = list->data;
if (column->dirty)
{
dirty = TRUE;
if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
{
gint w = 1;
if (column->button)
w = MAX (w, column->button->requisition.width);
gtk_tree_view_column_set_width (column, w);
}
}
}
if (dirty == FALSE)
return;
if (tree_view->priv->model == NULL)
return;
path = gtk_tree_path_new_root ();
if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
{
gtk_tree_view_calc_size (tree_view, tree_view->priv->tree, &iter, 1);
_gtk_tree_view_update_size (tree_view);
}
gtk_tree_path_free (path);
for (list = tree_view->priv->columns; list; list = list->next)
{
column = list->data;
column->dirty = FALSE;
}
}
#if 0
static void
gtk_tree_view_create_buttons (GtkTreeView *tree_view)
{
GtkWidget *alignment;
GtkWidget *label;
GList *list;
GtkTreeViewColumn *column;
gint i;
GtkWidget *hbox;
GtkWidget *arrow;
/* FIXME this has to be merged with update_button_contents() in
* gtktreeviewcolumn.c
*/
for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
{
column = list->data;
if (column->button != NULL)
continue;
gtk_tree_view_create_button (tree_view, i);
alignment = gtk_alignment_new (column->xalign, 0.5, 0.0, 0.0);
hbox = gtk_hbox_new (FALSE, 2);
arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_IN);
column->arrow = arrow;
column->alignment = alignment;
if (column->child)
label = column->child;
else
{
label = gtk_label_new (column->title);
gtk_widget_show (label);
}
if (column->xalign <= 0.5)
gtk_box_pack_end (GTK_BOX (hbox), arrow, FALSE, FALSE, 0);
else
gtk_box_pack_start (GTK_BOX (hbox), arrow, FALSE, FALSE, 0);
gtk_box_pack_start (GTK_BOX (hbox), alignment, TRUE, TRUE, 0);
gtk_container_add (GTK_CONTAINER (alignment), label);
gtk_container_add (GTK_CONTAINER (column->button), hbox);
gtk_widget_show (hbox);
gtk_widget_show (alignment);
/* don't show the arrow yet */
}
gtk_tree_view_size_request_buttons (tree_view);
if (GTK_WIDGET_REALIZED (tree_view))
gtk_tree_view_realize_buttons (tree_view);
if (GTK_WIDGET_MAPPED (tree_view))
gtk_tree_view_map_buttons (tree_view);
}
#endif
/* Make sure the node is visible vertically */
static void
gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
GtkRBTree *tree,
GtkRBNode *node)
{
gint offset;
offset = _gtk_rbtree_node_find_offset (tree, node);
/* we reverse the order, b/c in the unusual case of the
* node's height being taller then the visible area, we'd rather
* have the node flush to the top
*/
if (offset + GTK_RBNODE_GET_HEIGHT (node) >
tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size)
gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
offset + GTK_RBNODE_GET_HEIGHT (node) -
tree_view->priv->vadjustment->page_size);
if (offset < tree_view->priv->vadjustment->value)
gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
offset);
}
/* This function could be more efficient.
* I'll optimize it if profiling seems to imply that
* it's important
*/
GtkTreePath *
_gtk_tree_view_find_path (GtkTreeView *tree_view,
GtkRBTree *tree,
GtkRBNode *node)
{
GtkTreePath *path;
GtkRBTree *tmp_tree;
GtkRBNode *tmp_node, *last;
gint count;
path = gtk_tree_path_new ();
g_return_val_if_fail (node != NULL, path);
g_return_val_if_fail (node != tree->nil, path);
count = 1 + node->left->count;
last = node;
tmp_node = node->parent;
tmp_tree = tree;
while (tmp_tree)
{
while (tmp_node != tmp_tree->nil)
{
if (tmp_node->right == last)
count += 1 + tmp_node->left->count;
last = tmp_node;
tmp_node = tmp_node->parent;
}
gtk_tree_path_prepend_index (path, count - 1);
last = tmp_tree->parent_node;
tmp_tree = tmp_tree->parent_tree;
if (last)
{
count = 1 + last->left->count;
tmp_node = last->parent;
}
}
return path;
}
/* Returns TRUE if we ran out of tree before finding the path.
*/
gboolean
_gtk_tree_view_find_node (GtkTreeView *tree_view,
GtkTreePath *path,
GtkRBTree **tree,
GtkRBNode **node)
{
GtkRBNode *tmpnode = NULL;
GtkRBTree *tmptree = tree_view->priv->tree;
gint *indices = gtk_tree_path_get_indices (path);
gint depth = gtk_tree_path_get_depth (path);
gint i = 0;
*node = NULL;
*tree = NULL;
if (depth == 0)
return FALSE;
do
{
if (tmptree == NULL)
{
*node = tmpnode;
*tree = tmptree;
return TRUE;
}
tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
++i;
if (i >= depth)
{
*node = tmpnode;
*tree = tmptree;
return FALSE;
}
tmptree = tmpnode->children;
}
while (1);
}
static void
gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
GtkTreeIter *iter,
GtkRBTree *tree,
GtkRBNode *node)
{
do
{
g_return_if_fail (node != NULL);
if (node->children)
{
GtkTreeIter child;
GtkRBTree *new_tree;
GtkRBNode *new_node;
new_tree = node->children;
new_node = new_tree->root;
while (new_node && new_node->left != new_tree->nil)
new_node = new_node->left;
g_return_if_fail (gtk_tree_model_iter_children (model, &child, iter));
gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
}
gtk_tree_model_unref_node (model, iter);
node = _gtk_rbtree_next (tree, node);
}
while (gtk_tree_model_iter_next (model, iter));
}
static void
gtk_tree_view_unref_tree (GtkTreeView *tree_view,
GtkRBTree *tree)
{
GtkTreeIter iter;
GtkTreePath *path;
GtkRBNode *node;
node = tree->root;
while (node && node->left != tree->nil)
node = node->left;
g_return_if_fail (node != NULL);
path = _gtk_tree_view_find_path (tree_view, tree, node);
gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
&iter, path);
gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
gtk_tree_path_free (path);
}
static void
gtk_tree_view_queue_draw_node (GtkTreeView *tree_view,
GtkRBTree *tree,
GtkRBNode *node,
GdkRectangle *clip_rect)
{
GdkRectangle rect;
if (!GTK_WIDGET_REALIZED (tree_view))
return;
rect.x = 0;
rect.width = tree_view->priv->width;
rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
rect.height = BACKGROUND_HEIGHT (node);
if (clip_rect)
{
GdkRectangle new_rect;
gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
}
else
{
gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
}
}
static void
gtk_tree_view_queue_draw_path (GtkTreeView *tree_view,
GtkTreePath *path,
GdkRectangle *clip_rect)
{
GtkRBTree *tree = NULL;
GtkRBNode *node = NULL;
_gtk_tree_view_find_node (tree_view, path, &tree, &node);
if (tree)
gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
}
/* x and y are the mouse position
*/
static void
gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
GtkRBTree *tree,
GtkRBNode *node,
gint x,
gint y)
{
GdkRectangle area;
GtkStateType state;
GtkWidget *widget;
gint x_offset = 0;
if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
return;
widget = GTK_WIDGET (tree_view);
gtk_tree_view_get_arrow_xrange (tree_view, &x_offset, NULL);
area.x = x_offset;
area.y = CELL_FIRST_PIXEL (tree_view, tree, node);
area.width = tree_view->priv->tab_offset - 2;
area.height = CELL_HEIGHT (node);
if (node == tree_view->priv->button_pressed_node)
{
if (x >= area.x && x <= (area.x + area.width) &&
y >= area.y && y <= (area.y + area.height))
state = GTK_STATE_ACTIVE;
else
state = GTK_STATE_NORMAL;
}
else
{
if (node == tree_view->priv->prelight_node &&
GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
state = GTK_STATE_PRELIGHT;
else
state = GTK_STATE_NORMAL;
}
/* FIXME expander size should come from a style property */
#define EXPANDER_SIZE 8
gtk_paint_expander (widget->style,
tree_view->priv->bin_window,
state,
&area,
widget,
"treeview",
area.x,
(area.y + (area.height - EXPANDER_SIZE) / 2 - (area.height + 1) % 2),
node->children != NULL);
#undef EXPANDER_SIZE
}
static void
_gtk_tree_view_update_col_width (GtkTreeView *tree_view)
{
GList *list, *last_column;
GtkTreeViewColumn *column;
gint width = 0;
for (last_column = g_list_last (tree_view->priv->columns);
last_column &&
!(GTK_TREE_VIEW_COLUMN (last_column->data)->visible) &&
GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (last_column->data)->button);
last_column = last_column->prev)
;
if (last_column == NULL)
return;
for (list = tree_view->priv->columns; list != last_column; list = list->next)
{
column = GTK_TREE_VIEW_COLUMN (list->data);
if (! column->visible)
continue;
width += column->width;
column->displayed_width = (CLAMP (column->width, (column->min_width!=-1)?column->min_width:column->width, (column->max_width!=-1)?column->max_width:column->width));
}
column = GTK_TREE_VIEW_COLUMN (last_column->data);
column->displayed_width = MAX (GTK_WIDGET (tree_view)->allocation.width, tree_view->priv->width) - width;
}
void
_gtk_tree_view_update_size (GtkTreeView *tree_view)
{
gint width, height;
GList *list;
GtkTreeViewColumn *column;
gint i;
if (tree_view->priv->model == NULL)
{
tree_view->priv->width = 0;
tree_view->priv->height = 0;
gtk_widget_queue_draw (GTK_WIDGET (tree_view));
return;
}
width = 0;
for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
{
column = list->data;
if (!column->visible)
continue;
width += TREE_VIEW_COLUMN_WIDTH (column);
}
if (tree_view->priv->tree == NULL)
height = 0;
else
height = tree_view->priv->tree->root->offset + TREE_VIEW_VERTICAL_SEPARATOR;
if (tree_view->priv->width != width)
{
tree_view->priv->width = width;
tree_view->priv->hadjustment->upper = width;
gtk_signal_emit_by_name (GTK_OBJECT (tree_view->priv->hadjustment), "changed");
}
if (tree_view->priv->height != height)
{
tree_view->priv->height = height;
tree_view->priv->vadjustment->upper = tree_view->priv->height;
gtk_signal_emit_by_name (GTK_OBJECT (tree_view->priv->vadjustment), "changed");
}
if (GTK_WIDGET_REALIZED (tree_view))
{
gdk_window_resize (tree_view->priv->bin_window, MAX (width, GTK_WIDGET (tree_view)->allocation.width), height + TREE_VIEW_HEADER_HEIGHT (tree_view));
gdk_window_resize (tree_view->priv->header_window, MAX (width, GTK_WIDGET (tree_view)->allocation.width), tree_view->priv->header_height);
_gtk_tree_view_update_col_width (tree_view);
}
gtk_widget_queue_resize (GTK_WIDGET (tree_view));
}
/* this function returns the new width of the column being resized given
* the column and x position of the cursor; the x cursor position is passed
* in as a pointer and automagicly corrected if it's beyond min/max limits
*/
static gint
gtk_tree_view_new_column_width (GtkTreeView *tree_view,
gint i,
gint *x)
{
GtkTreeViewColumn *column;
gint width;
/* first translate the x position from widget->window
* to clist->clist_window
*/
column = g_list_nth (tree_view->priv->columns, i)->data;
width = *x - column->button->allocation.x;
/* Clamp down the value */
if (column->min_width == -1)
width = MAX (column->button->requisition.width,
width);
else
width = MAX (column->min_width,
width);
if (column->max_width != -1)
width = MIN (width, column->max_width != -1);
*x = column->button->allocation.x + width;
return width;
}
/* Callbacks */
static void
gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
GtkTreeView *tree_view)
{
if (GTK_WIDGET_REALIZED (tree_view))
{
gdk_window_move (tree_view->priv->bin_window,
- tree_view->priv->hadjustment->value,
- tree_view->priv->vadjustment->value);
gdk_window_move (tree_view->priv->header_window,
- tree_view->priv->hadjustment->value,
0);
gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
gdk_window_process_updates (tree_view->priv->header_window, TRUE);
}
}
/* Public methods
*/
/**
* gtk_tree_view_new:
*
* Creates a new #GtkTreeView widget.
*
* Return value: A newly created #GtkTreeView widget.
**/
GtkWidget *
gtk_tree_view_new (void)
{
GtkTreeView *tree_view;
tree_view = GTK_TREE_VIEW (gtk_type_new (gtk_tree_view_get_type ()));
return GTK_WIDGET (tree_view);
}
/**
* gtk_tree_view_new_with_model:
* @model: the model.
*
* Creates a new #GtkTreeView widget with the model initialized to @model.
*
* Return value: A newly created #GtkTreeView widget.
**/
GtkWidget *
gtk_tree_view_new_with_model (GtkTreeModel *model)
{
GtkTreeView *tree_view;
tree_view = GTK_TREE_VIEW (gtk_type_new (gtk_tree_view_get_type ()));
gtk_tree_view_set_model (tree_view, model);
return GTK_WIDGET (tree_view);
}
/**
* gtk_tree_view_get_model:
* @tree_view: a #GtkTreeView
*
* Returns the model the the #GtkTreeView is based on. Returns NULL if the
* model is unset.
*
* Return value: A #GtkTreeModel, or NULL if none is currently being used.
**/
GtkTreeModel *
gtk_tree_view_get_model (GtkTreeView *tree_view)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
return tree_view->priv->model;
}
static void
gtk_tree_view_setup_model (GtkTreeView *tree_view)
{
GtkTreePath *path;
GtkTreeIter iter;
tree_view->priv->tree = NULL;
g_signal_connectc (tree_view->priv->model,
"changed",
gtk_tree_view_changed,
tree_view,
FALSE);
g_signal_connectc (tree_view->priv->model,
"inserted",
gtk_tree_view_inserted,
tree_view,
FALSE);
g_signal_connectc (tree_view->priv->model,
"has_child_toggled",
gtk_tree_view_has_child_toggled,
tree_view,
FALSE);
g_signal_connectc (tree_view->priv->model,
"deleted",
gtk_tree_view_deleted,
tree_view,
FALSE);
g_signal_connectc (tree_view->priv->model,
"reordered",
gtk_tree_view_reordered,
tree_view,
FALSE);
if (tree_view->priv->columns == NULL)
return;
path = gtk_tree_path_new_root ();
if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
{
tree_view->priv->tree = _gtk_rbtree_new ();
gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE, GTK_WIDGET_REALIZED (tree_view));
}
gtk_tree_path_free (path);
// gtk_tree_view_create_buttons (tree_view);
GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_MODEL_SETUP);
}
/**
* gtk_tree_view_set_model:
* @tree_view: A #GtkTreeNode.
* @model: The model.
*
* Sets the model for a #GtkTreeView. If the @tree_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_tree_view_set_model (GtkTreeView *tree_view,
GtkTreeModel *model)
{
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
if (model == tree_view->priv->model)
return;
if (model != NULL)
g_object_ref (model);
if (tree_view->priv->model != NULL)
{
if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_MODEL_SETUP))
{
g_signal_handlers_disconnect_matched (G_OBJECT (tree_view->priv->model),
G_SIGNAL_MATCH_FUNC,
0, 0, NULL,
gtk_tree_view_changed, NULL);
g_signal_handlers_disconnect_matched (G_OBJECT (tree_view->priv->model),
G_SIGNAL_MATCH_FUNC,
0, 0, NULL,
gtk_tree_view_inserted, NULL);
g_signal_handlers_disconnect_matched (G_OBJECT (tree_view->priv->model),
G_SIGNAL_MATCH_FUNC,
0, 0, NULL,
gtk_tree_view_has_child_toggled, NULL);
g_signal_handlers_disconnect_matched (G_OBJECT (tree_view->priv->model),
G_SIGNAL_MATCH_FUNC,
0, 0, NULL,
gtk_tree_view_deleted, NULL);
g_signal_handlers_disconnect_matched (G_OBJECT (tree_view->priv->model),
G_SIGNAL_MATCH_FUNC,
0, 0, NULL,
gtk_tree_view_reordered, NULL);
_gtk_rbtree_free (tree_view->priv->tree);
}
if (tree_view->priv->drag_dest_row)
gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_MODEL_SETUP);
g_object_unref (tree_view->priv->model);
}
tree_view->priv->model = model;
if (model == NULL)
{
tree_view->priv->tree = NULL;
if (GTK_WIDGET_REALIZED (tree_view))
_gtk_tree_view_update_size (tree_view);
}
else if (GTK_WIDGET_REALIZED (tree_view))
{
gtk_tree_view_setup_model (tree_view);
_gtk_tree_view_update_size (tree_view);
}
g_object_notify (G_OBJECT (tree_view), "model");
}
/**
* gtk_tree_view_get_selection:
* @tree_view: A #GtkTreeView.
*
* Gets the #GtkTreeSelection associated with @tree_view.
*
* Return value: A #GtkTreeSelection object.
**/
GtkTreeSelection *
gtk_tree_view_get_selection (GtkTreeView *tree_view)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
if (tree_view->priv->selection == NULL)
tree_view->priv->selection =
_gtk_tree_selection_new_with_tree_view (tree_view);
return tree_view->priv->selection;
}
/**
* gtk_tree_view_get_hadjustment:
* @tree_view: A #GtkTreeView
*
* Gets the #GtkAdjustment currently being used for the horizontal aspect.
*
* Return value: A #GtkAdjustment object, or NULL if none is currently being
* used.
**/
GtkAdjustment *
gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
if (tree_view->priv->hadjustment == NULL)
gtk_tree_view_set_hadjustment (tree_view, NULL);
return tree_view->priv->hadjustment;
}
/**
* gtk_tree_view_set_hadjustment:
* @tree_view: A #GtkTreeView
* @adjustment: The #GtkAdjustment to set, or NULL
*
* Sets the #GtkAdjustment for the current horizontal aspect.
**/
void
gtk_tree_view_set_hadjustment (GtkTreeView *tree_view,
GtkAdjustment *adjustment)
{
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
gtk_tree_view_set_adjustments (tree_view,
adjustment,
tree_view->priv->vadjustment);
g_object_notify (G_OBJECT (tree_view), "hadjustment");
}
/**
* gtk_tree_view_get_vadjustment:
* @tree_view: A #GtkTreeView
*
* Gets the #GtkAdjustment currently being used for the vertical aspect.
*
* Return value: A #GtkAdjustment object, or NULL if none is currently being
* used.
**/
GtkAdjustment *
gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
if (tree_view->priv->vadjustment == NULL)
gtk_tree_view_set_vadjustment (tree_view, NULL);
return tree_view->priv->vadjustment;
}
/**
* gtk_tree_view_set_vadjustment:
* @tree_view: A #GtkTreeView
* @adjustment: The #GtkAdjustment to set, or NULL
*
* Sets the #GtkAdjustment for the current vertical aspect.
**/
void
gtk_tree_view_set_vadjustment (GtkTreeView *tree_view,
GtkAdjustment *adjustment)
{
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
gtk_tree_view_set_adjustments (tree_view,
tree_view->priv->hadjustment,
adjustment);
g_object_notify (G_OBJECT (tree_view), "vadjustment");
}
/**
* gtk_tree_view_set_adjustments:
* @tree_view: A #GtkTreeView
* @hadj: The horizontal #GtkAdjustment to set, or NULL
* @vadj: The vertical #GtkAdjustment to set, or NULL
*
* Sets the horizonal and or vertical #GtkAdjustment.
**/
static void
gtk_tree_view_set_adjustments (GtkTreeView *tree_view,
GtkAdjustment *hadj,
GtkAdjustment *vadj)
{
gboolean need_adjust = FALSE;
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
if (hadj)
g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
else
hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
if (vadj)
g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
else
vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
if (tree_view->priv->hadjustment && (tree_view->priv->hadjustment != hadj))
{
gtk_signal_disconnect_by_data (GTK_OBJECT (tree_view->priv->hadjustment), tree_view);
gtk_object_unref (GTK_OBJECT (tree_view->priv->hadjustment));
}
if (tree_view->priv->vadjustment && (tree_view->priv->vadjustment != vadj))
{
gtk_signal_disconnect_by_data (GTK_OBJECT (tree_view->priv->vadjustment), tree_view);
gtk_object_unref (GTK_OBJECT (tree_view->priv->vadjustment));
}
if (tree_view->priv->hadjustment != hadj)
{
tree_view->priv->hadjustment = hadj;
gtk_object_ref (GTK_OBJECT (tree_view->priv->hadjustment));
gtk_object_sink (GTK_OBJECT (tree_view->priv->hadjustment));
gtk_signal_connect (GTK_OBJECT (tree_view->priv->hadjustment), "value_changed",
(GtkSignalFunc) gtk_tree_view_adjustment_changed,
tree_view);
need_adjust = TRUE;
}
if (tree_view->priv->vadjustment != vadj)
{
tree_view->priv->vadjustment = vadj;
gtk_object_ref (GTK_OBJECT (tree_view->priv->vadjustment));
gtk_object_sink (GTK_OBJECT (tree_view->priv->vadjustment));
gtk_signal_connect (GTK_OBJECT (tree_view->priv->vadjustment), "value_changed",
(GtkSignalFunc) gtk_tree_view_adjustment_changed,
tree_view);
need_adjust = TRUE;
}
if (need_adjust)
gtk_tree_view_adjustment_changed (NULL, tree_view);
}
/* Column and header operations */
/**
* gtk_tree_view_get_headers_visible:
* @tree_view: A #GtkTreeView.
*
* Returns TRUE if the headers on the @tree_view are visible.
*
* Return value: Whether the headers are visible or not.
**/
gboolean
gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
}
/**
* gtk_tree_view_set_headers_visible:
* @tree_view: A #GtkTreeView.
* @headers_visible: TRUE if the headers are visible
*
* Sets the the visibility state of the headers.
**/
void
gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
gboolean headers_visible)
{
gint x, y;
GList *list;
GtkTreeViewColumn *column;
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
headers_visible = !! headers_visible;
if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE) == headers_visible)
return;
if (headers_visible)
GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
else
GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
if (GTK_WIDGET_REALIZED (tree_view))
{
gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
if (headers_visible)
{
gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view));
if (GTK_WIDGET_MAPPED (tree_view))
gtk_tree_view_map_buttons (tree_view);
}
else
{
gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
for (list = tree_view->priv->columns; list; list = list->next)
{
column = list->data;
gtk_widget_unmap (column->button);
}
gdk_window_hide (tree_view->priv->header_window);
}
}
tree_view->priv->vadjustment->page_size = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
tree_view->priv->vadjustment->page_increment = (GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
tree_view->priv->vadjustment->lower = 0;
tree_view->priv->vadjustment->upper = tree_view->priv->height;
gtk_signal_emit_by_name (GTK_OBJECT (tree_view->priv->vadjustment), "changed");
gtk_widget_queue_resize (GTK_WIDGET (tree_view));
g_object_notify (G_OBJECT (tree_view), "headers_visible");
}
/**
* gtk_tree_view_columns_autosize:
* @tree_view: A #GtkTreeView.
*
* Resizes all columns to their optimal width.
**/
void
gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
{
gboolean dirty = FALSE;
GList *list;
GtkTreeViewColumn *column;
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
for (list = tree_view->priv->columns; list; list = list->next)
{
column = list->data;
if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
continue;
column->dirty = TRUE;
dirty = TRUE;
}
if (dirty)
gtk_widget_queue_resize (GTK_WIDGET (tree_view));
}
/**
* gtk_tree_view_set_headers_clickable:
* @tree_view: A #GtkTreeView.
* @setting: TRUE if the columns are clickable.
*
* Allow the column title buttons to be clicked.
**/
void
gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
gboolean setting)
{
GList *list;
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
g_return_if_fail (tree_view->priv->model != NULL);
for (list = tree_view->priv->columns; list; list = list->next)
gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
g_object_notify (G_OBJECT (tree_view), "headers_clickable");
}
/**
* gtk_tree_view_append_column:
* @tree_view: A #GtkTreeView.
* @column: The #GtkTreeViewColumn to add.
*
* Appends @column to the list of columns.
*
* Return value: The number of columns in @tree_view after appending.
**/
gint
gtk_tree_view_append_column (GtkTreeView *tree_view,
GtkTreeViewColumn *column)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
g_return_val_if_fail (column->tree_view == NULL, -1);
return gtk_tree_view_insert_column (tree_view, column, -1);
}
/**
* gtk_tree_view_remove_column:
* @tree_view: A #GtkTreeView.
* @column: The #GtkTreeViewColumn to remove.
*
* Removes @column from @tree_view.
*
* Return value: The number of columns in @tree_view after removing.
**/
gint
gtk_tree_view_remove_column (GtkTreeView *tree_view,
GtkTreeViewColumn *column)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
g_return_val_if_fail (column->tree_view == GTK_WIDGET (tree_view), -1);
_gtk_tree_view_column_unset_tree_view (column);
if (tree_view->priv->focus_column == column)
tree_view->priv->focus_column = NULL;
tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
g_object_unref (G_OBJECT (column));
tree_view->priv->n_columns--;
if (GTK_WIDGET_REALIZED (tree_view))
{
GList *list;
for (list = tree_view->priv->columns; list; list = list->next)
{
column = GTK_TREE_VIEW_COLUMN (list->data);
if (column->visible)
column->dirty = TRUE;
}
if (tree_view->priv->n_columns == 0 &&
gtk_tree_view_get_headers_visible (tree_view))
gdk_window_hide (tree_view->priv->header_window);
gtk_widget_queue_resize (GTK_WIDGET (tree_view));
}
return tree_view->priv->n_columns;
}
/**
* gtk_tree_view_insert_column:
* @tree_view: A #GtkTreeView.
* @column: The #GtkTreeViewColumn to be inserted.
* @position: The position to insert @column in.
*
* This inserts the @column into the @tree_view at @position. If @position is
* -1, then the column is inserted at the end.
*
* Return value: The number of columns in @tree_view after insertion.
**/
gint
gtk_tree_view_insert_column (GtkTreeView *tree_view,
GtkTreeViewColumn *column,
gint position)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
g_return_val_if_fail (column->tree_view == NULL, -1);
g_object_ref (G_OBJECT (column));
if (tree_view->priv->n_columns == 0 &&
GTK_WIDGET_REALIZED (tree_view) &&
gtk_tree_view_get_headers_visible (tree_view))
{
gdk_window_show (tree_view->priv->header_window);
}
tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
column, position);
_gtk_tree_view_column_set_tree_view (column, tree_view);
_gtk_tree_view_column_create_button (column);
tree_view->priv->n_columns++;
if (GTK_WIDGET_REALIZED (tree_view))
{
GList *list;
for (list = tree_view->priv->columns; list; list = list->next)
{
column = GTK_TREE_VIEW_COLUMN (list->data);
if (column->visible)
column->dirty = TRUE;
}
gtk_widget_queue_resize (GTK_WIDGET (tree_view));
}
return tree_view->priv->n_columns;
}
/**
* gtk_tree_view_insert_column_with_attributes:
* @tree_view: A #GtkTreeView
* @position: The position to insert the new column in.
* @title: The title to set the header to.
* @cell: The #GtkCellRenderer.
* @Varargs: A NULL terminated list of attributes.
*
* Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
* @position. If @position is -1, then the newly created column is inserted at
* the end. The column is initialized with the attributes given.
*
* Return value: The number of columns in @tree_view after insertion.
**/
gint
gtk_tree_view_insert_column_with_attributes (GtkTreeView *tree_view,
gint position,
gchar *title,
GtkCellRenderer *cell,
...)
{
GtkTreeViewColumn *column;
gchar *attribute;
va_list args;
gint column_id;
g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
column = gtk_tree_view_column_new ();
gtk_tree_view_column_set_title (column, title);
gtk_tree_view_column_set_cell_renderer (column, cell);
va_start (args, cell);
attribute = va_arg (args, gchar *);
while (attribute != NULL)
{
column_id = va_arg (args, gint);
gtk_tree_view_column_add_attribute (column, attribute, column_id);
attribute = va_arg (args, gchar *);
}
va_end (args);
gtk_tree_view_insert_column (tree_view, column, position);
g_object_unref (column);
return tree_view->priv->n_columns;
}
/**
* gtk_tree_view_get_column:
* @tree_view: A #GtkTreeView.
* @n: The position of the column, counting from 0.
*
* Gets the #GtkTreeViewColumn at the given position in the #tree_view.
*
* Return value: The #GtkTreeViewColumn, or NULL if the position is outside the
* range of columns.
**/
GtkTreeViewColumn *
gtk_tree_view_get_column (GtkTreeView *tree_view,
gint n)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
g_return_val_if_fail (tree_view->priv->model != NULL, NULL);
if (n < 0 || n >= tree_view->priv->n_columns)
return NULL;
if (tree_view->priv->columns == NULL)
return NULL;
return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
}
void
gtk_tree_view_set_expander_column (GtkTreeView *tree_view,
gint col)
{
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
if (tree_view->priv->expander_column != col)
{
tree_view->priv->expander_column = col;
g_object_notify (G_OBJECT (tree_view), "expander_column");
}
}
gint
gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
return tree_view->priv->expander_column;
}
/**
* gtk_tree_view_scroll_to_point:
* @tree_view: a #GtkTreeView
* @tree_x: X coordinate of new top-left pixel of visible area
* @tree_y: Y coordinate of new top-left pixel of visible area
*
* Scrolls the tree view such that the top-left corner of the visible
* area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
* in tree window coordinates. The @tree_view must be realized before
* this function is called. If it isn't, you probably want ot be
* using gtk_tree_view_scroll_to_cell.
**/
void
gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
gint tree_x,
gint tree_y)
{
GtkAdjustment *hadj;
GtkAdjustment *vadj;
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
g_return_if_fail (GTK_WIDGET_REALIZED (tree_view));
hadj = tree_view->priv->hadjustment;
vadj = tree_view->priv->vadjustment;
gtk_adjustment_set_value (hadj, CLAMP (tree_x, hadj->lower, hadj->upper));
gtk_adjustment_set_value (vadj, CLAMP (tree_y, vadj->lower, vadj->upper));
}
/**
* gtk_tree_view_scroll_to_cell
* @tree_view: A #GtkTreeView.
* @path: The path of the row to move to.
* @column: The #GtkTreeViewColumn to move horizontally to.
* @row_align: The vertical alignment of the row specified by @path.
* @col_align: The horizontal alignment of the column specified by @column.
*
* Moves the alignments of @tree_view to the position specified by
* @column and @path. If @column is NULL, then no horizontal
* scrolling occurs. Likewise, if @path is NULL no vertical scrolling
* occurs. @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.
**/
void
gtk_tree_view_scroll_to_cell (GtkTreeView *tree_view,
GtkTreePath *path,
GtkTreeViewColumn *column,
gfloat row_align,
gfloat col_align)
{
GdkRectangle cell_rect;
GdkRectangle vis_rect;
gint dest_x, dest_y;
/* FIXME work on unmapped/unrealized trees? maybe implement when
* we do incremental reflow for trees
*/
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
g_return_if_fail (row_align >= 0.0);
g_return_if_fail (row_align <= 1.0);
g_return_if_fail (col_align >= 0.0);
g_return_if_fail (col_align <= 1.0);
g_return_if_fail (path != NULL || column != NULL);
row_align = CLAMP (row_align, 0.0, 1.0);
col_align = CLAMP (col_align, 0.0, 1.0);
if (! GTK_WIDGET_REALIZED (tree_view))
{
if (path)
tree_view->priv->scroll_to_path = gtk_tree_path_copy (path);
if (column)
tree_view->priv->scroll_to_column = column;
tree_view->priv->scroll_to_row_align = row_align;
tree_view->priv->scroll_to_col_align = col_align;
return;
}
gtk_tree_view_get_cell_area (tree_view, path, column, &cell_rect);
gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
dest_x = vis_rect.x;
dest_y = vis_rect.y;
if (path)
{
dest_x = cell_rect.x +
cell_rect.width * row_align -
vis_rect.width * row_align;
}
if (column)
{
dest_y = cell_rect.y +
cell_rect.height * col_align -
vis_rect.height * col_align;
}
gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
}
/**
* gtk_tree_view_get_path_at_pos:
* @tree_view: A #GtkTreeView.
* @window: The #GdkWindow to check against.
* @x: The x position to be identified.
* @y: The y position to be identified.
* @path: A pointer to a #GtkTreePath pointer to be filled in, or %NULL
* @column: A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
* @cell_x: A pointer where the X coordinate relative to the cell can be placed, or %NULL
* @cell_y: A pointer where the Y coordinate relative to the cell can be placed, or %NULL
*
* Finds the path at the point (@x, @y) relative to @window. If
* @window is NULL, then the point is found relative to the widget
* coordinates. This function is expected to be called after an
* event, with event->window being passed in as @window. It is
* primarily for things like popup menus. If @path is non-NULL, then
* it will be filled with the #GtkTreePath at that point. This path
* should be freed with #gtk_tree_path_free. If @column is non-NULL,
* then it will be filled with the column at that point. @cell_x and
* @cell_y return the coordinates relative to the cell background
* (i.e. the background_area passed to gtk_cell_renderer_render()).
*
* Return value: TRUE if a row exists at that coordinate.
**/
gboolean
gtk_tree_view_get_path_at_pos (GtkTreeView *tree_view,
GdkWindow *window,
gint x,
gint y,
GtkTreePath **path,
GtkTreeViewColumn **column,
gint *cell_x,
gint *cell_y)
{
GtkRBTree *tree;
GtkRBNode *node;
gint y_offset;
g_return_val_if_fail (tree_view != NULL, FALSE);
g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
g_return_val_if_fail (tree_view->priv->bin_window != NULL, FALSE);
if (window)
g_return_val_if_fail (window == tree_view->priv->bin_window, FALSE);
if (path)
*path = NULL;
if (column)
*column = NULL;
if (x > tree_view->priv->hadjustment->upper)
return FALSE;
if (x < 0 || y < 0)
return FALSE;
if (column || cell_x)
{
GtkTreeViewColumn *tmp_column;
GtkTreeViewColumn *last_column = NULL;
GList *list;
gint remaining_x = x;
gboolean found = FALSE;
for (list = tree_view->priv->columns; list; list = list->next)
{
tmp_column = list->data;
if (tmp_column->visible == FALSE)
continue;
last_column = tmp_column;
if (remaining_x <= tmp_column->width)
{
found = TRUE;
if (column)
*column = tmp_column;
if (cell_x)
*cell_x = remaining_x;
break;
}
remaining_x -= tmp_column->width;
}
if (!found)
{
if (column)
*column = last_column;
if (cell_x)
*cell_x = last_column->width + remaining_x;
}
}
if (window)
{
y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
&tree, &node);
}
else
{
if (y < TREE_VIEW_HEADER_HEIGHT (tree_view))
return FALSE;
y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y + tree_view->priv->vadjustment->value),
&tree, &node);
}
if (tree == NULL)
return FALSE;
if (cell_y)
*cell_y = y_offset;
if (path)
*path = _gtk_tree_view_find_path (tree_view, tree, node);
return TRUE;
}
static void
gtk_tree_view_get_background_xrange (GtkTreeView *tree_view,
GtkRBTree *tree,
GtkTreeViewColumn *column,
gint *x1,
gint *x2)
{
GtkTreeViewColumn *tmp_column = NULL;
gint total_width;
GList *list;
if (x1)
*x1 = 0;
if (x2)
*x2 = 0;
total_width = 0;
for (list = tree_view->priv->columns; list; list = list->next)
{
tmp_column = list->data;
if (tmp_column == column)
break;
if (tmp_column->visible)
total_width += tmp_column->width;
}
if (tmp_column != column)
{
g_warning (G_STRLOC": passed-in column isn't in the tree");
return;
}
if (x1)
*x1 = total_width;
if (x2)
{
if (column->visible)
*x2 = total_width + column->width;
else
*x2 = total_width; /* width of 0 */
}
}
static void
gtk_tree_view_get_cell_xrange (GtkTreeView *tree_view,
GtkRBTree *tree,
GtkTreeViewColumn *column,
gint *x1,
gint *x2)
{
GtkTreeViewColumn *tmp_column = NULL;
gint total_width;
GList *list;
gint i;
if (x1)
*x1 = 0;
if (x2)
*x2 = 0;
i = 0;
total_width = 0;
for (list = tree_view->priv->columns; list; list = list->next)
{
tmp_column = list->data;
if (tmp_column == column)
break;
if (tmp_column->visible)
total_width += tmp_column->width;
++i;
}
if (tmp_column != column)
{
g_warning (G_STRLOC": passed-in column isn't in the tree");
return;
}
/* Remember we're getting the cell range, i.e. the cell_area passed
* to the cell renderer.
*/
if (i == tree_view->priv->expander_column)
total_width += tree_view->priv->tab_offset * _gtk_rbtree_get_depth (tree);
if (x1)
*x1 = total_width;
if (x2)
{
if (column->visible)
*x2 = total_width + column->displayed_width;
else
*x2 = total_width; /* width of 0 */
}
}
static void
gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
gint *x1,
gint *x2)
{
gint x_offset = 0;
GList *list;
GtkTreeViewColumn *tmp_column = NULL;
gint total_width;
gint i;
i = 0;
total_width = 0;
for (list = tree_view->priv->columns; list; list = list->next)
{
tmp_column = list->data;
if (i == tree_view->priv->expander_column)
{
x_offset = total_width;
break;
}
if (tmp_column->visible)
total_width += tmp_column->width;
++i;
}
if (x1)
*x1 = x_offset;
if (tmp_column && tmp_column->visible)
{
/* +1 because x2 isn't included in the range. */
if (x2)
*x2 = x_offset + tree_view->priv->tab_offset + 1;
}
else
{
/* return an empty range, the expander column is hidden */
if (x2)
*x2 = x_offset;
}
}
/**
* gtk_tree_view_get_cell_area:
* @tree_view: a #GtkTreeView
* @path: a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
* @column: a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
* @rect: rectangle to fill with cell rect
*
* Fills the bounding rectangle in tree window coordinates for the
* cell at the row specified by @path and the column specified by
* @column. If @path is %NULL, the y and height fields of the
* rectangle will be filled with 0. If @column is %NULL, the x and
* width fields will be filled with 0. The sum of all cell rects does
* not cover the entire tree; there are extra pixels in between rows,
* for example. The returned rectangle is equivalent to the @cell_area
* passed to gtk_cell_renderer_render().
*
**/
void
gtk_tree_view_get_cell_area (GtkTreeView *tree_view,
GtkTreePath *path,
GtkTreeViewColumn *column,
GdkRectangle *rect)
{
GtkRBTree *tree = NULL;
GtkRBNode *node = NULL;
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
g_return_if_fail (rect != NULL);
rect->x = 0;
rect->y = 0;
rect->width = 0;
rect->height = 0;
if (path)
{
/* Get vertical coords */
_gtk_tree_view_find_node (tree_view, path, &tree, &node);
if (tree == NULL)
{
g_warning (G_STRLOC": no row corresponding to path");
return;
}
/* Remember that the rbtree stores node height including the vertical
* separator, see comment at top of file.
*/
rect->y = CELL_FIRST_PIXEL (tree_view, tree, node);
rect->height = CELL_HEIGHT (node);
}
if (column)
{
gint x2 = 0;
gtk_tree_view_get_cell_xrange (tree_view, tree, column, &rect->x, &x2);
rect->width = x2 - rect->x;
}
}
/**
* gtk_tree_view_get_background_area:
* @tree_view: a #GtkTreeView
* @path: a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
* @column: a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
* @rect: rectangle to fill with cell background rect
*
* Fills the bounding rectangle in tree window coordinates for the
* cell at the row specified by @path and the column specified by
* @column. If @path is %NULL, the y and height fields of the
* rectangle will be filled with 0. If @column is %NULL, the x and
* width fields will be filled with 0. The returned rectangle is
* equivalent to the @background_area passed to
* gtk_cell_renderer_render(). These background areas tile to cover
* the entire tree window (except for the area used for header
* buttons). Contrast with the cell_area, returned by
* gtk_tree_view_get_cell_area(), which returns only the cell itself,
* excluding surrounding borders and the tree expander area.
*
**/
void
gtk_tree_view_get_background_area (GtkTreeView *tree_view,
GtkTreePath *path,
GtkTreeViewColumn *column,
GdkRectangle *rect)
{
GtkRBTree *tree = NULL;
GtkRBNode *node = NULL;
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
g_return_if_fail (rect != NULL);
rect->x = 0;
rect->y = 0;
rect->width = 0;
rect->height = 0;
if (path)
{
/* Get vertical coords */
_gtk_tree_view_find_node (tree_view, path, &tree, &node);
if (tree == NULL)
{
g_warning (G_STRLOC": no row corresponding to path");
return;
}
rect->y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
rect->height = BACKGROUND_HEIGHT (node);
}
if (column)
{
gint x2 = 0;
gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
rect->width = x2 - rect->x;
}
}
static void
gtk_tree_view_expand_all_helper (GtkRBTree *tree,
GtkRBNode *node,
gpointer data)
{
GtkTreeView *tree_view = data;
if (node->children)
_gtk_rbtree_traverse (node->children,
node->children->root,
G_PRE_ORDER,
gtk_tree_view_expand_all_helper,
data);
else if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT && node->children == NULL)
{
GtkTreePath *path;
GtkTreeIter iter;
GtkTreeIter child;
node->children = _gtk_rbtree_new ();
node->children->parent_tree = tree;
node->children->parent_node = node;
path = _gtk_tree_view_find_path (tree_view, tree, node);
gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
gtk_tree_model_iter_children (tree_view->priv->model, &child, &iter);
gtk_tree_view_build_tree (tree_view,
node->children,
&child,
gtk_tree_path_get_depth (path) + 1,
TRUE,
GTK_WIDGET_REALIZED (tree_view));
gtk_tree_path_free (path);
}
}
/**
* gtk_tree_view_expand_all:
* @tree_view: A #GtkTreeView.
*
* Recursively expands all nodes in the @tree_view.
**/
void
gtk_tree_view_expand_all (GtkTreeView *tree_view)
{
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
g_return_if_fail (tree_view->priv->tree != NULL);
_gtk_rbtree_traverse (tree_view->priv->tree,
tree_view->priv->tree->root,
G_PRE_ORDER,
gtk_tree_view_expand_all_helper,
tree_view);
_gtk_tree_view_update_size (tree_view);
}
static void
gtk_tree_view_collapse_all_helper (GtkRBTree *tree,
GtkRBNode *node,
gpointer data)
{
if (node->children)
{
GtkTreePath *path;
GtkTreeIter iter;
path = _gtk_tree_view_find_path (GTK_TREE_VIEW (data),
node->children,
node->children->root);
gtk_tree_model_get_iter (GTK_TREE_VIEW (data)->priv->model,
&iter,
path);
gtk_tree_view_discover_dirty (GTK_TREE_VIEW (data),
node->children,
&iter,
gtk_tree_path_get_depth (path));
/* Ensure we don't have a dangling pointer to a dead node */
ensure_unprelighted (GTK_TREE_VIEW (data));
_gtk_rbtree_remove (node->children);
gtk_tree_path_free (path);
}
}
/**
* gtk_tree_view_collapse_all:
* @tree_view: A #GtkTreeView.
*
* Recursively collapses all visible, expanded nodes in @tree_view.
**/
void
gtk_tree_view_collapse_all (GtkTreeView *tree_view)
{
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
g_return_if_fail (tree_view->priv->tree != NULL);
_gtk_rbtree_traverse (tree_view->priv->tree,
tree_view->priv->tree->root,
G_PRE_ORDER,
gtk_tree_view_collapse_all_helper,
tree_view);
if (GTK_WIDGET_MAPPED (tree_view))
gtk_widget_queue_draw (GTK_WIDGET (tree_view));
}
/* FIXME the bool return values for expand_row and collapse_row are
* not analagous; they should be TRUE if the row had children and
* was not already in the requested state.
*/
/**
* gtk_tree_view_expand_row:
* @tree_view: a #GtkTreeView
* @path: path to a row
* @open_all: whether to recursively expand, or just expand immediate children
*
* Opens the row so its children are visible
*
* Return value: %TRUE if the row existed and had children
**/
gboolean
gtk_tree_view_expand_row (GtkTreeView *tree_view,
GtkTreePath *path,
gboolean open_all)
{
GtkTreeIter iter;
GtkTreeIter child;
GtkRBTree *tree;
GtkRBNode *node;
g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
g_return_val_if_fail (path != NULL, FALSE);
if (_gtk_tree_view_find_node (tree_view,
path,
&tree,
&node))
return FALSE;
if (node->children)
return TRUE;
gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
return FALSE;
node->children = _gtk_rbtree_new ();
node->children->parent_tree = tree;
node->children->parent_node = node;
gtk_tree_model_iter_children (tree_view->priv->model, &child, &iter);
gtk_tree_view_build_tree (tree_view,
node->children,
&child,
gtk_tree_path_get_depth (path) + 1,
open_all,
GTK_WIDGET_REALIZED (tree_view));
if (GTK_WIDGET_MAPPED (tree_view))
gtk_widget_queue_draw (GTK_WIDGET (tree_view));
return TRUE;
}
/**
* gtk_tree_view_collapse_row:
* @tree_view: a #GtkTreeView
* @path: path to a row in the @tree_view
*
* Collapses a row (hides its child rows).
*
* Return value: %TRUE if the row was expanded
**/
gboolean
gtk_tree_view_collapse_row (GtkTreeView *tree_view,
GtkTreePath *path)
{
GtkRBTree *tree;
GtkRBNode *node;
GtkTreeIter iter;
g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
g_return_val_if_fail (path != NULL, FALSE);
if (_gtk_tree_view_find_node (tree_view,
path,
&tree,
&node))
return FALSE;
if (node->children == NULL)
return FALSE;
gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
gtk_tree_view_discover_dirty (tree_view,
node->children,
&iter,
gtk_tree_path_get_depth (path));
/* Ensure we don't have a dangling pointer to a dead node */
ensure_unprelighted (tree_view);
g_assert (tree_view->priv->prelight_node == NULL);
_gtk_rbtree_remove (node->children);
if (GTK_WIDGET_MAPPED (tree_view))
gtk_widget_queue_draw (GTK_WIDGET (tree_view));
return TRUE;
}
/**
* gtk_tree_view_get_visible_rect:
* @tree_view: a #GtkTreeView
* @visible_rect: rectangle to fill
*
* Fills @visible_rect with the currently-visible region of the
* buffer, in tree coordinates. Convert to widget coordinates with
* gtk_tree_view_tree_to_widget_coords(). Tree coordinates start at
* 0,0 for row 0 of the tree, and cover the entire scrollable area of
* the tree.
**/
void
gtk_tree_view_get_visible_rect (GtkTreeView *tree_view,
GdkRectangle *visible_rect)
{
GtkWidget *widget;
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
widget = GTK_WIDGET (tree_view);
if (visible_rect)
{
visible_rect->x = tree_view->priv->hadjustment->value;
visible_rect->y = tree_view->priv->vadjustment->value;
visible_rect->width = widget->allocation.width;
visible_rect->height = widget->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
}
}
/**
* gtk_tree_view_widget_to_tree_coords:
* @tree_view: a #GtkTreeView
* @wx: widget X coordinate
* @wy: widget Y coordinate
* @tx: return location for tree X coordinate
* @ty: return location for tree Y coordinate
*
* Converts widget coordinates to coordinates for the
* tree window (the full scrollable area of the tree).
*
**/
void
gtk_tree_view_widget_to_tree_coords (GtkTreeView *tree_view,
gint wx,
gint wy,
gint *tx,
gint *ty)
{
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
if (tx)
{
*tx = wx + tree_view->priv->hadjustment->value;
}
if (ty)
{
*ty = wy + tree_view->priv->vadjustment->value;
}
}
/**
* gtk_tree_view_tree_to_widget_coords:
* @tree_view: a #GtkTreeView
* @tx: tree X coordinate
* @ty: tree Y coordinate
* @wx: return location for widget X coordinate
* @wy: return location for widget Y coordinate
*
* Converts tree coordinates (coordinates in full scrollable
* area of the tree) to widget coordinates.
*
**/
void
gtk_tree_view_tree_to_widget_coords (GtkTreeView *tree_view,
gint tx,
gint ty,
gint *wx,
gint *wy)
{
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
if (wx)
{
*wx = tx - tree_view->priv->hadjustment->value;
}
if (wy)
{
*wy = ty - tree_view->priv->vadjustment->value;
}
}
/**
* gtk_tree_view_set_rules_hint
* @tree_view: a #GtkTreeView
* @setting: %TRUE if the tree requires reading across rows
*
* This function tells GTK+ that the user interface for your
* application requires users to read across tree rows and associate
* cells with one another. By default, GTK+ will then render the tree
* with alternating row colors. <emphasis>DO NOT</emphasis> use it
* just because you prefer the appearance of the ruled tree; that's a
* question for the theme. Some themes will draw tree rows in
* alternating colors even when rules are turned off, and users who
* prefer that appearance all the time can choose those themes. You
* should call this function only as a <emphasis>semantic</emphasis>
* hint to the theme engine that your tree makes alternating colors
* useful from a functional standpoint (since it has lots of columns,
* generally).
*
**/
void
gtk_tree_view_set_rules_hint (GtkTreeView *tree_view,
gboolean setting)
{
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
setting = setting != FALSE;
if (tree_view->priv->has_rules != setting)
{
tree_view->priv->has_rules = setting;
gtk_widget_queue_draw (GTK_WIDGET (tree_view));
}
g_object_notify (G_OBJECT (tree_view), "rules_hint");
}
/**
* gtk_tree_view_get_rules_hint
* @tree_view: a #GtkTreeView
*
* Gets the setting set by gtk_tree_view_set_rules_hint().
*
* Return value: %TRUE if rules are useful for the user of this tree
**/
gboolean
gtk_tree_view_get_rules_hint (GtkTreeView *tree_view)
{
g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
return tree_view->priv->has_rules;
}
/* Drag-and-drop */
static void
set_source_row (GdkDragContext *context,
GtkTreeModel *model,
GtkTreePath *source_row)
{
g_object_set_data_full (G_OBJECT (context),
"gtk-tree-view-source-row",
source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
(GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
}
static GtkTreePath*
get_source_row (GdkDragContext *context)
{
GtkTreeRowReference *ref =
g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
if (ref)
return gtk_tree_row_reference_get_path (ref);
else
return NULL;
}
static void
set_dest_row (GdkDragContext *context,
GtkTreeModel *model,
GtkTreePath *dest_row)
{
g_object_set_data_full (G_OBJECT (context),
"gtk-tree-view-dest-row",
dest_row ? gtk_tree_row_reference_new (model, dest_row) : NULL,
(GDestroyNotify) (dest_row ? gtk_tree_row_reference_free : NULL));
}
static GtkTreePath*
get_dest_row (GdkDragContext *context)
{
GtkTreeRowReference *ref =
g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
if (ref)
return gtk_tree_row_reference_get_path (ref);
else
return NULL;
}
/* Get/set whether drag_motion requested the drag data and
* drag_data_received should thus not actually insert the data,
* since the data doesn't result from a drop.
*/
static void
set_status_pending (GdkDragContext *context,
GdkDragAction suggested_action)
{
g_object_set_data (G_OBJECT (context),
"gtk-tree-view-status-pending",
GINT_TO_POINTER (suggested_action));
}
static GdkDragAction
get_status_pending (GdkDragContext *context)
{
return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
"gtk-tree-view-status-pending"));
}
typedef struct _TreeViewDragInfo TreeViewDragInfo;
struct _TreeViewDragInfo
{
GdkModifierType start_button_mask;
GtkTargetList *source_target_list;
GdkDragAction source_actions;
GClosure *row_draggable_closure;
GtkTargetList *dest_target_list;
GClosure *location_droppable_closure;
guint source_set : 1;
guint dest_set : 1;
};
static TreeViewDragInfo*
get_info (GtkTreeView *tree_view)
{
return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
}
static void
clear_source_info (TreeViewDragInfo *di)
{
if (di->source_target_list)
gtk_target_list_unref (di->source_target_list);
if (di->row_draggable_closure)
g_closure_unref (di->row_draggable_closure);
di->source_target_list = NULL;
di->row_draggable_closure = NULL;
}
static void
clear_dest_info (TreeViewDragInfo *di)
{
if (di->location_droppable_closure)
g_closure_unref (di->location_droppable_closure);
if (di->dest_target_list)
gtk_target_list_unref (di->dest_target_list);
di->location_droppable_closure = NULL;
di->dest_target_list = NULL;
}
static void
destroy_info (TreeViewDragInfo *di)
{
clear_source_info (di);
clear_dest_info (di);
g_free (di);
}
static TreeViewDragInfo*
ensure_info (GtkTreeView *tree_view)
{
TreeViewDragInfo *di;
di = get_info (tree_view);
if (di == NULL)
{
di = g_new0 (TreeViewDragInfo, 1);
g_object_set_data_full (G_OBJECT (tree_view),
"gtk-tree-view-drag-info",
di,
(GDestroyNotify) destroy_info);
}
return di;
}
static void
remove_info (GtkTreeView *tree_view)
{
g_object_set_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info", NULL);
}
#define SCROLL_EDGE_SIZE 15
static gint
drag_scan_timeout (gpointer data)
{
GtkTreeView *tree_view;
gint x, y;
GdkModifierType state;
GtkTreePath *path = NULL;
GtkTreeViewColumn *column = NULL;
GdkRectangle visible_rect;
tree_view = GTK_TREE_VIEW (data);
gdk_window_get_pointer (tree_view->priv->bin_window,
&x, &y, &state);
gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
/* See if we are near the edge. */
if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
(visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
(y - visible_rect.y) < SCROLL_EDGE_SIZE ||
(visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
{
gtk_tree_view_get_path_at_pos (tree_view,
tree_view->priv->bin_window,
x, y,
&path,
&column,
NULL,
NULL);
if (path != NULL)
{
gtk_tree_view_scroll_to_cell (tree_view,
path,
column,
0.5, 0.5);
gtk_tree_path_free (path);
}
}
return TRUE;
}
static void
ensure_scroll_timeout (GtkTreeView *tree_view)
{
if (tree_view->priv->scroll_timeout == 0)
tree_view->priv->scroll_timeout = gtk_timeout_add (50, drag_scan_timeout, tree_view);
}
static void
remove_scroll_timeout (GtkTreeView *tree_view)
{
if (tree_view->priv->scroll_timeout != 0)
{
gtk_timeout_remove (tree_view->priv->scroll_timeout);
tree_view->priv->scroll_timeout = 0;
}
}
void
gtk_tree_view_set_rows_drag_source (GtkTreeView *tree_view,
GdkModifierType start_button_mask,
const GtkTargetEntry *targets,
gint n_targets,
GdkDragAction actions,
GtkTreeViewDraggableFunc row_draggable_func,
gpointer user_data)
{
TreeViewDragInfo *di;
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
di = ensure_info (tree_view);
clear_source_info (di);
di->start_button_mask = start_button_mask;
di->source_target_list = gtk_target_list_new (targets, n_targets);
di->source_actions = actions;
if (row_draggable_func)
{
di->row_draggable_closure = g_cclosure_new ((GCallback) row_draggable_func,
user_data, NULL);
g_closure_ref (di->row_draggable_closure);
g_closure_sink (di->row_draggable_closure);
}
di->source_set = TRUE;
}
void
gtk_tree_view_set_rows_drag_dest (GtkTreeView *tree_view,
const GtkTargetEntry *targets,
gint n_targets,
GdkDragAction actions,
GtkTreeViewDroppableFunc location_droppable_func,
gpointer user_data)
{
TreeViewDragInfo *di;
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
gtk_drag_dest_set (GTK_WIDGET (tree_view),
0,
NULL,
0,
actions);
di = ensure_info (tree_view);
clear_dest_info (di);
if (targets)
di->dest_target_list = gtk_target_list_new (targets, n_targets);
if (location_droppable_func)
{
di->location_droppable_closure = g_cclosure_new ((GCallback) location_droppable_func,
user_data, NULL);
g_closure_ref (di->location_droppable_closure);
g_closure_sink (di->location_droppable_closure);
}
di->dest_set = TRUE;
}
void
gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
{
TreeViewDragInfo *di;
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
di = get_info (tree_view);
if (di)
{
if (di->source_set)
{
clear_source_info (di);
di->source_set = FALSE;
}
if (!di->dest_set && !di->source_set)
remove_info (tree_view);
}
}
void
gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
{
TreeViewDragInfo *di;
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
di = get_info (tree_view);
if (di)
{
if (di->dest_set)
{
gtk_drag_dest_unset (GTK_WIDGET (tree_view));
clear_dest_info (di);
di->dest_set = FALSE;
}
if (!di->dest_set && !di->source_set)
remove_info (tree_view);
}
}
void
gtk_tree_view_set_drag_dest_row (GtkTreeView *tree_view,
GtkTreePath *path,
GtkTreeViewDropPosition pos)
{
GtkTreePath *current_dest;
/* Note; this function is exported to allow a custom DND
* implementation, so it can't touch TreeViewDragInfo
*/
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
current_dest = NULL;
if (tree_view->priv->drag_dest_row)
current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
if (current_dest)
{
gtk_tree_view_queue_draw_path (tree_view, current_dest, NULL);
gtk_tree_path_free (current_dest);
}
if (tree_view->priv->drag_dest_row)
gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
tree_view->priv->drag_dest_pos = pos;
if (path)
{
tree_view->priv->drag_dest_row =
gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
gtk_tree_view_queue_draw_path (tree_view, path, NULL);
}
else
tree_view->priv->drag_dest_row = NULL;
}
void
gtk_tree_view_get_drag_dest_row (GtkTreeView *tree_view,
GtkTreePath **path,
GtkTreeViewDropPosition *pos)
{
g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
if (path)
{
if (tree_view->priv->drag_dest_row)
*path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
else
*path = NULL;
}
if (pos)
*pos = tree_view->priv->drag_dest_pos;
}
gboolean
gtk_tree_view_get_dest_row_at_pos (GtkTreeView *tree_view,
gint drag_x,
gint drag_y,
GtkTreePath **path,
GtkTreeViewDropPosition *pos)
{
gint cell_y;
gdouble offset_into_row;
gdouble quarter;
gint x, y;
GdkRectangle cell;
GtkTreeViewColumn *column = NULL;
GtkTreePath *tmp_path = NULL;
/* Note; this function is exported to allow a custom DND
* implementation, so it can't touch TreeViewDragInfo
*/
g_return_val_if_fail (tree_view != NULL, FALSE);
g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
g_return_val_if_fail (drag_x >= 0, FALSE);
g_return_val_if_fail (drag_y >= 0, FALSE);
g_return_val_if_fail (tree_view->priv->bin_window != NULL, FALSE);
if (path)
*path = NULL;
/* remember that drag_x and drag_y are in widget coords, convert to tree window */
gtk_tree_view_widget_to_tree_coords (tree_view, drag_x, drag_y,
&x, &y);
/* If in the top quarter of a row, we drop before that row; if
* in the bottom quarter, drop after that row; if in the middle,
* and the row has children, drop into the row.
*/
if (!gtk_tree_view_get_path_at_pos (tree_view,
tree_view->priv->bin_window,
x, y,
&tmp_path,
&column,
NULL,
&cell_y))
return FALSE;
gtk_tree_view_get_background_area (tree_view, tmp_path, column,
&cell);
offset_into_row = cell_y;
if (path)
*path = tmp_path;
else
gtk_tree_path_free (tmp_path);
tmp_path = NULL;
quarter = cell.height / 4.0;
if (pos)
{
if (offset_into_row < quarter)
{
*pos = GTK_TREE_VIEW_DROP_BEFORE;
}
else if (offset_into_row < quarter * 2)
{
*pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
}
else if (offset_into_row < quarter * 3)
{
*pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
}
else
{
*pos = GTK_TREE_VIEW_DROP_AFTER;
}
}
return TRUE;
}
static gboolean
gtk_tree_view_maybe_begin_dragging_row (GtkTreeView *tree_view,
GdkEventMotion *event)
{
GdkDragContext *context;
TreeViewDragInfo *di;
GtkTreePath *path = NULL;
gint button;
gint cell_x, cell_y;
GtkTreeModel *model;
di = get_info (tree_view);
if (di == NULL)
return FALSE;
if (tree_view->priv->pressed_button < 0)
return FALSE;
if (!gtk_drag_check_threshold (GTK_WIDGET (tree_view),
tree_view->priv->press_start_x,
tree_view->priv->press_start_y,
event->x, event->y))
return FALSE;
model = gtk_tree_view_get_model (tree_view);
if (model == NULL)
return FALSE;
button = tree_view->priv->pressed_button;
tree_view->priv->pressed_button = -1;
gtk_tree_view_get_path_at_pos (tree_view,
tree_view->priv->bin_window,
tree_view->priv->press_start_x,
tree_view->priv->press_start_y,
&path,
NULL,
&cell_x,
&cell_y);
if (path == NULL)
return FALSE;
/* FIXME if the path doesn't match the row_draggable predicate,
* return FALSE and free path
*/
/* FIXME Check whether we're a start button, if not return FALSE and
* free path
*/
context = gtk_drag_begin (GTK_WIDGET (tree_view),
di->source_target_list,
di->source_actions,
button,
(GdkEvent*)event);
gtk_drag_set_icon_default (context);
{
GdkPixmap *row_pix;
row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
path);
gtk_drag_set_icon_pixmap (context,
gdk_drawable_get_colormap (row_pix),
row_pix,
NULL,
/* the + 1 is for the black border in the icon */
tree_view->priv->press_start_x + 1,
cell_y + 1);
gdk_pixmap_unref (row_pix);
}
set_source_row (context, model, path);
gtk_tree_path_free (path);
return TRUE;
}
/* Default signal implementations for the drag signals */
static void
gtk_tree_view_drag_begin (GtkWidget *widget,
GdkDragContext *context)
{
/* do nothing */
}
static void
gtk_tree_view_drag_end (GtkWidget *widget,
GdkDragContext *context)
{
/* do nothing */
}
static void
gtk_tree_view_drag_data_get (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint info,
guint time)
{
GtkTreeView *tree_view;
GtkTreeModel *model;
TreeViewDragInfo *di;
GtkTreePath *source_row;
tree_view = GTK_TREE_VIEW (widget);
model = gtk_tree_view_get_model (tree_view);
if (model == NULL)
return;
di = get_info (GTK_TREE_VIEW (widget));
if (di == NULL)
return;
source_row = get_source_row (context);
if (source_row == NULL)
return;
/* We can implement the GTK_TREE_MODEL_ROW target generically for
* any model; for DragSource models there are some other targets
* 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 (selection_data->target == gdk_atom_intern ("GTK_TREE_MODEL_ROW", FALSE))
{
gtk_selection_data_set_tree_row (selection_data,
model,
source_row);
}
done:
gtk_tree_path_free (source_row);
}
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 GtkTreeView 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 "
"gtk_signal_emit_stop_by_name() in your signal handler to prevent "
"the default handler from running. Look at the source code "
"for the default handler in gtktreeview.c to get an idea what "
"your handler should do. (gtktreeview.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
gtk_tree_view_drag_data_delete (GtkWidget *widget,
GdkDragContext *context)
{
TreeViewDragInfo *di;
GtkTreeModel *model;
GtkTreeView *tree_view;
GtkTreePath *source_row;
tree_view = GTK_TREE_VIEW (widget);
model = gtk_tree_view_get_model (tree_view);
if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
return;
di = get_info (tree_view);
if (di == NULL)
return;
source_row = get_source_row (context);
if (source_row == NULL)
return;
gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
source_row);
gtk_tree_path_free (source_row);
set_source_row (context, NULL, NULL);
}
static void
remove_open_timeout (GtkTreeView *tree_view)
{
if (tree_view->priv->open_dest_timeout != 0)
{
gtk_timeout_remove (tree_view->priv->open_dest_timeout);
tree_view->priv->open_dest_timeout = 0;
}
}
static void
gtk_tree_view_drag_leave (GtkWidget *widget,
GdkDragContext *context,
guint time)
{
TreeViewDragInfo *di;
di = get_info (GTK_TREE_VIEW (widget));
/* unset any highlight row */
gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
NULL,
GTK_TREE_VIEW_DROP_BEFORE);
remove_scroll_timeout (GTK_TREE_VIEW (widget));
remove_open_timeout (GTK_TREE_VIEW (widget));
}
static gint
open_row_timeout (gpointer data)
{
GtkTreeView *tree_view = data;
GtkTreePath *dest_path = NULL;
GtkTreeViewDropPosition pos;
gtk_tree_view_get_drag_dest_row (tree_view,
&dest_path,
&pos);
if (dest_path &&
(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
{
gtk_tree_view_expand_row (tree_view,
dest_path,
FALSE);
tree_view->priv->open_dest_timeout = 0;
gtk_tree_path_free (dest_path);
return FALSE;
}
else
{
if (dest_path)
gtk_tree_path_free (dest_path);
return TRUE;
}
}
/* Returns TRUE if event should not be propagated to parent widgets */
static gboolean
set_destination_row (GtkTreeView *tree_view,
GdkDragContext *context,
gint x,
gint y,
GdkDragAction *suggested_action,
GdkAtom *target)
{
GtkTreePath *path = NULL;
GtkTreeViewDropPosition pos;
GtkTreeViewDropPosition old_pos;
TreeViewDragInfo *di;
GtkWidget *widget;
GtkTreePath *old_dest_path = NULL;
*suggested_action = 0;
*target = GDK_NONE;
widget = GTK_WIDGET (tree_view);
di = get_info (tree_view);
if (di == NULL)
{
/* someone unset us as a drag dest, note that if
* we return FALSE drag_leave isn't called
*/
gtk_tree_view_set_drag_dest_row (tree_view,
NULL,
GTK_TREE_VIEW_DROP_BEFORE);
remove_scroll_timeout (GTK_TREE_VIEW (widget));
remove_open_timeout (GTK_TREE_VIEW (widget));
return FALSE; /* no longer a drop site */
}
*target = gtk_drag_dest_find_target (widget, context, di->dest_target_list);
if (*target == GDK_NONE)
{
return FALSE;
}
if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
x, y,
&path,
&pos))
{
/* can't drop here */
remove_open_timeout (tree_view);
gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
NULL,
GTK_TREE_VIEW_DROP_BEFORE);
/* don't propagate to parent though */
return TRUE;
}
g_assert (path);
/* If we left the current row's "open" zone, unset the timeout for
* opening the row
*/
gtk_tree_view_get_drag_dest_row (tree_view,
&old_dest_path,
&old_pos);
if (old_dest_path &&
(gtk_tree_path_compare (path, old_dest_path) != 0 ||
!(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
remove_open_timeout (tree_view);
if (old_dest_path)
gtk_tree_path_free (old_dest_path);
if (TRUE /* FIXME if the location droppable predicate */)
{
GtkWidget *source_widget;
*suggested_action = context->suggested_action;
source_widget = gtk_drag_get_source_widget (context);
if (source_widget == widget)
{
/* Default to MOVE, unless the user has
* pressed ctrl or alt to affect available actions
*/
if ((context->actions & GDK_ACTION_MOVE) != 0)
*suggested_action = GDK_ACTION_MOVE;
}
gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
path, pos);
}
else
{
/* can't drop here */
remove_open_timeout (tree_view);
gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
NULL,
GTK_TREE_VIEW_DROP_BEFORE);
}
return TRUE;
}
static gboolean
gtk_tree_view_drag_motion (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
GtkTreePath *path = NULL;
GtkTreeViewDropPosition pos;
GtkTreeView *tree_view;
GdkDragAction suggested_action = 0;
GdkAtom target;
tree_view = GTK_TREE_VIEW (widget);
if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
return FALSE;
ensure_scroll_timeout (tree_view);
gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
if (path == NULL)
{
/* Can't drop here. */
gdk_drag_status (context, 0, time);
}
else
{
if (tree_view->priv->open_dest_timeout == 0 &&
(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
{
tree_view->priv->open_dest_timeout =
gtk_timeout_add (500, open_row_timeout, tree_view);
}
if (target == gdk_atom_intern ("GTK_TREE_MODEL_ROW", FALSE))
{
/* Request data so we can use the source row when
* determining whether to accept the drop
*/
set_status_pending (context, suggested_action);
gtk_drag_get_data (widget, context, target, time);
}
else
{
set_status_pending (context, 0);
gdk_drag_status (context, suggested_action, time);
}
}
if (path)
gtk_tree_path_free (path);
return TRUE;
}
static GtkTreePath*
get_logical_dest_row (GtkTreeView *tree_view)
{
/* adjust path to point to the row the drop goes in front of */
GtkTreePath *path = NULL;
GtkTreeViewDropPosition pos;
gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
if (path == NULL)
return NULL;
if (pos == GTK_TREE_VIEW_DROP_BEFORE)
; /* do nothing */
else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
{
/* get first child, drop before it */
gtk_tree_path_append_index (path, 0);
}
else
{
g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
gtk_tree_path_next (path);
}
return path;
}
static gboolean
gtk_tree_view_drag_drop (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
guint time)
{
GtkTreeView *tree_view;
GtkTreePath *path;
GdkDragAction suggested_action = 0;
GdkAtom target = GDK_NONE;
TreeViewDragInfo *di;
GtkTreeModel *model;
tree_view = GTK_TREE_VIEW (widget);
model = gtk_tree_view_get_model (tree_view);
remove_scroll_timeout (GTK_TREE_VIEW (widget));
remove_open_timeout (GTK_TREE_VIEW (widget));
di = get_info (tree_view);
if (di == NULL)
return FALSE;
if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
return FALSE;
if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
return FALSE;
path = get_logical_dest_row (tree_view);
if (target != GDK_NONE && path != NULL)
{
/* in case a motion had requested drag data, change things so we
* treat drag data receives as a drop.
*/
set_status_pending (context, 0);
set_dest_row (context, model, path);
}
if (path)
gtk_tree_path_free (path);
/* Unset this thing */
gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
NULL,
GTK_TREE_VIEW_DROP_BEFORE);
if (target != GDK_NONE)
{
gtk_drag_get_data (widget, context, target, time);
return TRUE;
}
else
return FALSE;
}
static void
gtk_tree_view_drag_data_received (GtkWidget *widget,
GdkDragContext *context,
gint x,
gint y,
GtkSelectionData *selection_data,
guint info,
guint time)
{
GtkTreePath *path;
TreeViewDragInfo *di;
gboolean accepted = FALSE;
GtkTreeModel *model;
GtkTreeView *tree_view;
GtkTreePath *dest_row;
GdkDragAction suggested_action;
tree_view = GTK_TREE_VIEW (widget);
model = gtk_tree_view_get_model (tree_view);
if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
return;
di = get_info (tree_view);
if (di == NULL)
return;
suggested_action = get_status_pending (context);
if (suggested_action)
{
/* We are getting this data due to a request in drag_motion,
* rather than due to a request in drag_drop, so we are just
* supposed to call drag_status, not actually paste in the
* data.
*/
path = get_logical_dest_row (tree_view);
if (path == NULL)
suggested_action = 0;
if (suggested_action)
{
GtkTreeModel *src_model = NULL;
GtkTreePath *src_path = NULL;
if (!gtk_selection_data_get_tree_row (selection_data,
&src_model,
&src_path))
suggested_action = 0;
if (suggested_action)
{
if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
src_model,
src_path,
path))
suggested_action = 0;
gtk_tree_path_free (src_path);
}
}
gdk_drag_status (context, suggested_action, time);
if (path)
gtk_tree_path_free (path);
/* If you can't drop, remove user drop indicator until the next motion */
if (suggested_action == 0)
gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
NULL,
GTK_TREE_VIEW_DROP_BEFORE);
return;
}
dest_row = get_dest_row (context);
if (dest_row == NULL)
return;
if (selection_data->length >= 0)
{
if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
dest_row,
selection_data))
accepted = TRUE;
}
gtk_drag_finish (context,
accepted,
(context->action == GDK_ACTION_MOVE),
time);
gtk_tree_path_free (dest_row);
/* drop dest_row */
set_dest_row (context, NULL, NULL);
}
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