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gdk: Add api to set drag window hotspot

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With GdkDragContext now being in charge of placing the window,
it needs to know about the hotspot to place under the cursor.
This commit is contained in:
Matthias Clasen 2015-12-07 21:52:03 -05:00
parent 08ecf19907
commit f4ebdb64ee
4 changed files with 32 additions and 0 deletions
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1
docs/reference/gdk/gdk3-sections.txt
View File

@ -968,6 +968,7 @@ gdk_drag_context_get_source_window
gdk_drag_context_get_dest_window
gdk_drag_context_get_protocol
gdk_drag_context_get_drag_window
gdk_drag_context_set_hotspot
<SUBSECTION Standard>
GDK_DRAG_CONTEXT

23
gdk/gdkdnd.c
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@ -480,3 +480,26 @@ gdk_drag_context_get_drag_window (GdkDragContext *context)
return NULL;
}
/**
* gdk_drag_context_set_hotspot:
* @context: a #GdkDragContext
* @hot_x: x coordinate of the drag window hotspot
* @hot_y: y coordinate of the drag window hotspot
*
* Sets the position of the drag window that will be kept
* under the cursor hotspot. Initially, the hotspot is at the
* top left corner of the drag window.
*
* Since: 3.20
*/
void
gdk_drag_context_set_hotspot (GdkDragContext *context,
gint hot_x,
gint hot_y)
{
g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
if (GDK_DRAG_CONTEXT_GET_CLASS (context)->set_hotspot)
GDK_DRAG_CONTEXT_GET_CLASS (context)->set_hotspot (context, hot_x, hot_y);
}

5
gdk/gdkdnd.h
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@ -174,6 +174,11 @@ gboolean gdk_drag_drop_succeeded (GdkDragContext *context);
GDK_AVAILABLE_IN_3_20
GdkWindow *gdk_drag_context_get_drag_window (GdkDragContext *context);
GDK_AVAILABLE_IN_3_20
void gdk_drag_context_set_hotspot (GdkDragContext *context,
gint hot_x,
gint hot_y);
G_END_DECLS
#endif /* __GDK_DND_H__ */

3
gdk/gdkdndprivate.h
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@ -63,6 +63,9 @@ struct _GdkDragContextClass {
guint32 time_);
gboolean (*drop_status) (GdkDragContext *context);
GdkWindow* (*get_drag_window) (GdkDragContext *context);
void (*set_hotspot) (GdkDragContext *context,
gint hot_x,
gint hot_y);
};
struct _GdkDragContext {