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-rw-r--r--lib/widgets/ephy-node-view.c284
1 files changed, 233 insertions, 51 deletions
diff --git a/lib/widgets/ephy-node-view.c b/lib/widgets/ephy-node-view.c
index 1b4c91f3f..c49924b37 100644
--- a/lib/widgets/ephy-node-view.c
+++ b/lib/widgets/ephy-node-view.c
@@ -74,6 +74,11 @@ struct EphyNodeViewPrivate
int drag_x;
int drag_y;
GtkTargetList *source_target_list;
+
+ gboolean drop_occurred;
+ gboolean have_drag_data;
+ GtkSelectionData *drag_data;
+ guint scroll_id;
};
enum
@@ -92,6 +97,8 @@ enum
PROP_FILTER
};
+#define AUTO_SCROLL_MARGIN 20
+
static GObjectClass *parent_class = NULL;
static guint ephy_node_view_signals[LAST_SIGNAL] = { 0 };
@@ -224,6 +231,8 @@ get_node_from_path (EphyNodeView *view, GtkTreePath *path)
EphyNode *node;
GtkTreeIter iter, iter2;
+ if (path == NULL) return NULL;
+
gtk_tree_model_get_iter (view->priv->sortmodel, &iter, path);
gtk_tree_model_sort_convert_iter_to_child_iter
(GTK_TREE_MODEL_SORT (view->priv->sortmodel), &iter2, &iter);
@@ -234,99 +243,270 @@ get_node_from_path (EphyNodeView *view, GtkTreePath *path)
return node;
}
-static gboolean
-drag_motion_cb (GtkWidget *widget,
- GdkDragContext *context,
- gint x,
- gint y,
- guint time,
- EphyNodeView *view)
+static void
+gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
{
- EphyNode *node;
- GtkTreePath *path = NULL;
- GtkTreeViewDropPosition pos;
- gboolean res;
- EphyNodeViewPriority priority;
+ GdkRectangle visible_rect;
+ GtkAdjustment *vadjustment;
+ GdkWindow *window;
+ int y;
+ int offset;
+ float value;
+
+ window = gtk_tree_view_get_bin_window (tree_view);
+ vadjustment = gtk_tree_view_get_vadjustment (tree_view);
+
+ gdk_window_get_pointer (window, NULL, &y, NULL);
+
+ y += vadjustment->value;
+
+ gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
+
+ offset = y - (visible_rect.y + 2 * AUTO_SCROLL_MARGIN);
+ if (offset > 0)
+ {
+ offset = y - (visible_rect.y + visible_rect.height - 2 * AUTO_SCROLL_MARGIN);
+ if (offset < 0)
+ {
+ return;
+ }
+ }
- res = gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget),
- x, y, &path, &pos);
- if (!res) return TRUE;
+ value = CLAMP (vadjustment->value + offset, 0.0,
+ vadjustment->upper - vadjustment->page_size);
+ gtk_adjustment_set_value (vadjustment, value);
+}
- node = get_node_from_path (view, path);
+static int
+scroll_timeout (gpointer data)
+{
+ GtkTreeView *tree_view = GTK_TREE_VIEW (data);
+
+ gtk_tree_view_vertical_autoscroll (tree_view);
- priority = ephy_node_get_property_int (node, view->priv->priority_prop_id);
+ return TRUE;
+}
- if (priority != EPHY_NODE_VIEW_ALL_PRIORITY &&
- priority != EPHY_NODE_VIEW_SPECIAL_PRIORITY)
+static void
+remove_scroll_timeout (EphyNodeView *view)
+{
+ if (view->priv->scroll_id)
+ {
+ g_source_remove (view->priv->scroll_id);
+ view->priv->scroll_id = 0;
+ }
+}
+static void
+set_drag_dest_row (EphyNodeView *view,
+ GtkTreePath *path)
+{
+ if (path)
{
- gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget), path,
- GTK_TREE_VIEW_DROP_INTO_OR_AFTER);
- gdk_drag_status (context, context->suggested_action, time);
+ gtk_tree_view_set_drag_dest_row
+ (GTK_TREE_VIEW (view),
+ path,
+ GTK_TREE_VIEW_DROP_INTO_OR_BEFORE);
}
else
{
- gdk_drag_status (context, 0, time);
+ gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (view),
+ NULL,
+ 0);
}
+}
- gtk_tree_path_free (path);
+static void
+clear_drag_dest_row (EphyNodeView *view)
+{
+ gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (view), NULL, 0);
+}
- return TRUE;
+static void
+get_drag_data (EphyNodeView *view,
+ GdkDragContext *context,
+ guint32 time)
+{
+ GdkAtom target;
+
+ target = gtk_drag_dest_find_target (GTK_WIDGET (view),
+ context,
+ NULL);
+
+ gtk_drag_get_data (GTK_WIDGET (view),
+ context, target, time);
+}
+
+static void
+free_drag_data (EphyNodeView *view)
+{
+ view->priv->have_drag_data = FALSE;
+
+ if (view->priv->drag_data)
+ {
+ gtk_selection_data_free (view->priv->drag_data);
+ view->priv->drag_data = NULL;
+ }
}
static gboolean
-drag_drop_cb (GtkWidget *widget,
- GdkDragContext *context,
- gint x,
- gint y,
- guint time,
- EphyNodeView *view)
+drag_motion_cb (GtkWidget *widget,
+ GdkDragContext *context,
+ int x,
+ int y,
+ guint32 time,
+ EphyNodeView *view)
{
- GdkAtom target;
+ EphyNode *node;
+ GtkTreePath *path;
+ GtkTreeViewDropPosition pos;
+ guint action = 0;
+ int priority;
- target = gtk_drag_dest_find_target (widget, context,
- view->priv->drag_targets);
+ gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget),
+ x, y, &path, &pos);
+
+ if (!view->priv->have_drag_data)
+ {
+ get_drag_data (view, context, time);
+ }
+
+ node = get_node_from_path (view, path);
- if (target != GDK_NONE)
+ if (node)
{
- gtk_drag_get_data (widget, context, target, time);
+ priority = ephy_node_get_property_int
+ (node, view->priv->priority_prop_id);
+
+ if (priority != EPHY_NODE_VIEW_ALL_PRIORITY &&
+ priority != EPHY_NODE_VIEW_SPECIAL_PRIORITY)
+ {
+ action = context->suggested_action;
+ }
}
+
+ if (action)
+ {
+ set_drag_dest_row (view, path);
+ }
+ else
+ {
+ clear_drag_dest_row (view);
+ }
+
+ if (path)
+ {
+ gtk_tree_path_free (path);
+ }
+
+ if (view->priv->scroll_id == 0)
+ {
+ view->priv->scroll_id =
+ g_timeout_add (150,
+ scroll_timeout,
+ GTK_TREE_VIEW (view));
+ }
+
+ gdk_drag_status (context, action, time);
return TRUE;
}
+static void
+drag_leave_cb (GtkWidget *widget,
+ GdkDragContext *context,
+ guint32 time,
+ EphyNodeView *view)
+{
+ clear_drag_dest_row (view);
+
+ free_drag_data (view);
+
+ remove_scroll_timeout (view);
+}
+
static gboolean
drag_data_received_cb (GtkWidget *widget,
- GdkDragContext *context,
- gint x,
- gint y,
- GtkSelectionData *selection_data,
- guint info,
- guint time,
- EphyNodeView *view)
+ GdkDragContext *context,
+ int x,
+ int y,
+ GtkSelectionData *selection_data,
+ guint info,
+ guint32 time,
+ EphyNodeView *view)
{
- GtkTreePath *path = NULL;
+ GtkTreePath *path;
GtkTreeViewDropPosition pos;
+ gboolean on_row;
- if (gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget),
- x, y, &path, &pos))
+ if (selection_data->length <= 0 || selection_data->data == NULL)
+ {
+ return FALSE;
+ }
+
+ on_row = gtk_tree_view_get_dest_row_at_pos (GTK_TREE_VIEW (widget),
+ x, y, &path, &pos);
+
+ if (!view->priv->have_drag_data)
+ {
+ view->priv->have_drag_data = TRUE;
+ view->priv->drag_data =
+ gtk_selection_data_copy (selection_data);
+ }
+
+ if (view->priv->drop_occurred)
{
EphyNode *node;
GList *uris;
+ gboolean success = FALSE;
+
+ g_return_val_if_fail (on_row || path != NULL, FALSE);
node = get_node_from_path (view, path);
uris = gnome_vfs_uri_list_parse (selection_data->data);
- g_signal_emit (G_OBJECT (view),
- ephy_node_view_signals[NODE_DROPPED], 0,
- node, uris);
- gnome_vfs_uri_list_free (uris);
+
+ if (uris != NULL)
+ {
+ /* FIXME fill success */
+ g_signal_emit (G_OBJECT (view),
+ ephy_node_view_signals[NODE_DROPPED], 0,
+ node, uris);
+ gnome_vfs_uri_list_free (uris);
+ }
+
+ view->priv->drop_occurred = FALSE;
+ free_drag_data (view);
+ gtk_drag_finish (context, success, FALSE, time);
+ }
+ if (path)
+ {
gtk_tree_path_free (path);
}
- g_signal_stop_emission_by_name (widget, "drag_data_received");
+ /* appease GtkTreeView by preventing its drag_data_receive
+ * from being called */
+ g_signal_stop_emission_by_name (GTK_TREE_VIEW (view),
+ "drag_data_received");
+
+ return TRUE;
+}
+
+static gboolean
+drag_drop_cb (GtkWidget *widget,
+ GdkDragContext *context,
+ int x,
+ int y,
+ guint32 time,
+ EphyNodeView *view)
+{
+ view->priv->drop_occurred = TRUE;
+ get_drag_data (view, context, time);
+ remove_scroll_timeout (view);
+ clear_drag_dest_row (view);
+
return TRUE;
}
@@ -352,6 +532,8 @@ ephy_node_view_enable_drag_dest (EphyNodeView *view,
G_CALLBACK (drag_drop_cb), view);
g_signal_connect (treeview, "drag_motion",
G_CALLBACK (drag_motion_cb), view);
+ g_signal_connect (treeview, "drag_leave",
+ G_CALLBACK (drag_leave_cb), view);
}
static void
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 23:12:33 +0800