forked from AuroraMiddleware/gtk
85d8c33706
Sun Jun 8 22:03:09 2003 Owen Taylor <otaylor@redhat.com>
* tests/testdnd.c: Use application/x-rootwindow-drop for
root window drops. (#108670, Alex Larsson)
* gdk/x11/gdkdnd-x11.c (gdk_drag_motion) gtk/gtkdnd.c (gtk_drag_drop):
Accept either application/x-rootwin-drop (what GTK+ has always used)
or application/x-rootwindow-drop (what the XDND standard specifies).
3414 lines
92 KiB
C
3414 lines
92 KiB
C
/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1999 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "gdkconfig.h"
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#include "gdk/gdkkeysyms.h"
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#include "gtkdnd.h"
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#include "gtkimage.h"
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#include "gtkinvisible.h"
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#include "gtkmain.h"
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#include "gtkstock.h"
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#include "gtkwindow.h"
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static GSList *source_widgets = NULL;
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typedef struct _GtkDragSourceSite GtkDragSourceSite;
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typedef struct _GtkDragSourceInfo GtkDragSourceInfo;
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typedef struct _GtkDragDestSite GtkDragDestSite;
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typedef struct _GtkDragDestInfo GtkDragDestInfo;
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typedef struct _GtkDragAnim GtkDragAnim;
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typedef struct _GtkDragFindData GtkDragFindData;
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typedef enum
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{
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GTK_DRAG_STATUS_DRAG,
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GTK_DRAG_STATUS_WAIT,
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GTK_DRAG_STATUS_DROP
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} GtkDragStatus;
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struct _GtkDragSourceSite
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{
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GdkModifierType start_button_mask;
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GtkTargetList *target_list; /* Targets for drag data */
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GdkDragAction actions; /* Possible actions */
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/* Drag icon */
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GtkImageType icon_type;
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union
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{
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GtkImagePixmapData pixmap;
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GtkImagePixbufData pixbuf;
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GtkImageStockData stock;
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} icon_data;
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GdkBitmap *icon_mask;
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GdkColormap *colormap; /* Colormap for drag icon */
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/* Stored button press information to detect drag beginning */
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gint state;
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gint x, y;
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};
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struct _GtkDragSourceInfo
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{
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GtkWidget *widget;
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GtkTargetList *target_list; /* Targets for drag data */
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GdkDragAction possible_actions; /* Actions allowed by source */
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GdkDragContext *context; /* drag context */
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GtkWidget *icon_window; /* Window for drag */
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GtkWidget *fallback_icon; /* Window for drag used on other screens */
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GtkWidget *ipc_widget; /* GtkInvisible for grab, message passing */
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GdkCursor *cursor; /* Cursor for drag */
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gint hot_x, hot_y; /* Hot spot for drag */
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gint button; /* mouse button starting drag */
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GtkDragStatus status; /* drag status */
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GdkEvent *last_event; /* motion event waiting for response */
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gint start_x, start_y; /* Initial position */
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gint cur_x, cur_y; /* Current Position */
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GdkScreen *cur_screen; /* Current screen for pointer */
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guint32 grab_time; /* timestamp for initial grab */
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GList *selections; /* selections we've claimed */
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GtkDragDestInfo *proxy_dest; /* Set if this is a proxy drag */
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guint drop_timeout; /* Timeout for aborting drop */
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guint destroy_icon : 1; /* If true, destroy icon_window
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*/
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guint have_grab : 1; /* Do we still have the pointer grab
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*/
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};
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struct _GtkDragDestSite
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{
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GtkDestDefaults flags;
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GtkTargetList *target_list;
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GdkDragAction actions;
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GdkWindow *proxy_window;
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GdkDragProtocol proxy_protocol;
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guint do_proxy : 1;
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guint proxy_coords : 1;
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guint have_drag : 1;
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};
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struct _GtkDragDestInfo
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{
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GtkWidget *widget; /* Widget in which drag is in */
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GdkDragContext *context; /* Drag context */
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GtkDragSourceInfo *proxy_source; /* Set if this is a proxy drag */
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GtkSelectionData *proxy_data; /* Set while retrieving proxied data */
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guint dropped : 1; /* Set after we receive a drop */
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guint32 proxy_drop_time; /* Timestamp for proxied drop */
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guint proxy_drop_wait : 1; /* Set if we are waiting for a
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* status reply before sending
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* a proxied drop on.
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*/
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gint drop_x, drop_y; /* Position of drop */
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};
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#define DROP_ABORT_TIME 300000
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#define ANIM_STEP_TIME 50
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#define ANIM_STEP_LENGTH 50
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#define ANIM_MIN_STEPS 5
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#define ANIM_MAX_STEPS 10
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struct _GtkDragAnim
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{
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GtkDragSourceInfo *info;
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gint step;
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gint n_steps;
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};
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struct _GtkDragFindData
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{
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gint x;
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gint y;
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GdkDragContext *context;
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GtkDragDestInfo *info;
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gboolean found;
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gboolean toplevel;
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gboolean (*callback) (GtkWidget *widget, GdkDragContext *context,
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gint x, gint y, guint32 time);
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guint32 time;
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};
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/* Enumeration for some targets we handle internally */
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enum {
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TARGET_MOTIF_SUCCESS = 0x40000000,
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TARGET_MOTIF_FAILURE,
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TARGET_DELETE
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};
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/* Drag icons */
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static GdkPixmap *default_icon_pixmap = NULL;
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static GdkPixmap *default_icon_mask = NULL;
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static GdkColormap *default_icon_colormap = NULL;
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static gint default_icon_hot_x;
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static gint default_icon_hot_y;
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/* Forward declarations */
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static void gtk_drag_get_event_actions (GdkEvent *event,
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gint button,
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GdkDragAction actions,
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GdkDragAction *suggested_action,
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GdkDragAction *possible_actions);
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static GdkCursor * gtk_drag_get_cursor (GdkDisplay *display,
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GdkDragAction action);
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static GtkWidget *gtk_drag_get_ipc_widget (GdkScreen *screen);
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static void gtk_drag_release_ipc_widget (GtkWidget *widget);
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static gboolean gtk_drag_highlight_expose (GtkWidget *widget,
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GdkEventExpose *event,
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gpointer data);
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static void gtk_drag_selection_received (GtkWidget *widget,
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GtkSelectionData *selection_data,
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guint32 time,
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gpointer data);
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static void gtk_drag_find_widget (GtkWidget *widget,
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GtkDragFindData *data);
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static void gtk_drag_proxy_begin (GtkWidget *widget,
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GtkDragDestInfo *dest_info,
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guint32 time);
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static void gtk_drag_dest_realized (GtkWidget *widget);
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static void gtk_drag_dest_hierarchy_changed (GtkWidget *widget,
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GtkWidget *previous_toplevel);
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static void gtk_drag_dest_site_destroy (gpointer data);
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static void gtk_drag_dest_leave (GtkWidget *widget,
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GdkDragContext *context,
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guint time);
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static gboolean gtk_drag_dest_motion (GtkWidget *widget,
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GdkDragContext *context,
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gint x,
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gint y,
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guint time);
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static gboolean gtk_drag_dest_drop (GtkWidget *widget,
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GdkDragContext *context,
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gint x,
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gint y,
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guint time);
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static GtkDragDestInfo * gtk_drag_get_dest_info (GdkDragContext *context,
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gboolean create);
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static GtkDragSourceInfo *gtk_drag_get_source_info (GdkDragContext *context,
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gboolean create);
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static void gtk_drag_clear_source_info (GdkDragContext *context);
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static void gtk_drag_source_check_selection (GtkDragSourceInfo *info,
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GdkAtom selection,
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guint32 time);
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static void gtk_drag_source_release_selections (GtkDragSourceInfo *info,
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guint32 time);
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static void gtk_drag_drop (GtkDragSourceInfo *info,
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guint32 time);
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static void gtk_drag_drop_finished (GtkDragSourceInfo *info,
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gboolean success,
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guint time);
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static void gtk_drag_cancel (GtkDragSourceInfo *info,
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guint32 time);
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static gint gtk_drag_source_event_cb (GtkWidget *widget,
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GdkEvent *event,
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gpointer data);
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static void gtk_drag_source_site_destroy (gpointer data);
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static void gtk_drag_selection_get (GtkWidget *widget,
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GtkSelectionData *selection_data,
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guint sel_info,
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guint32 time,
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gpointer data);
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static gint gtk_drag_anim_timeout (gpointer data);
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static void gtk_drag_remove_icon (GtkDragSourceInfo *info);
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static void gtk_drag_source_info_destroy (GtkDragSourceInfo *info);
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static void gtk_drag_update (GtkDragSourceInfo *info,
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GdkScreen *screen,
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gint x_root,
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gint y_root,
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GdkEvent *event);
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static gint gtk_drag_motion_cb (GtkWidget *widget,
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GdkEventMotion *event,
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gpointer data);
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static gint gtk_drag_key_cb (GtkWidget *widget,
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GdkEventKey *event,
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gpointer data);
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static gint gtk_drag_button_release_cb (GtkWidget *widget,
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GdkEventButton *event,
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gpointer data);
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static gint gtk_drag_abort_timeout (gpointer data);
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/************************
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* Cursor and Icon data *
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************************/
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#define action_ask_width 16
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#define action_ask_height 16
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static const guchar action_ask_bits[] = {
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0x00, 0x00, 0xfe, 0x7f, 0xfe, 0x1f, 0x06, 0xc0, 0x76, 0xf8, 0xb6, 0xf7,
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0xd6, 0xec, 0x66, 0xdb, 0x66, 0xdb, 0x96, 0xec, 0x76, 0xf7, 0x76, 0xfb,
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0xf6, 0xfc, 0x72, 0xfb, 0x7a, 0xfb, 0xf8, 0xfc, };
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#define action_ask_mask_width 16
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#define action_ask_mask_height 16
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static const guchar action_ask_mask_bits[] = {
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0x8f, 0x07, 0xcf, 0x0f,
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0xef, 0x1f, 0xff, 0x3c, 0xff, 0x3c, 0x6f, 0x1f, 0x8f, 0x0f, 0x8f, 0x07,
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0x0f, 0x03, 0x8f, 0x07, 0x87, 0x07, 0x07, 0x03, };
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#define action_copy_width 16
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#define action_copy_height 16
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static const guchar action_copy_bits[] = {
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0x00, 0x00, 0xfe, 0x7f, 0xfe, 0x1f, 0x06, 0xc0, 0x76, 0xfb, 0x76, 0xfb,
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0x76, 0xfb, 0x06, 0x83, 0xf6, 0xbf, 0xf6, 0xbf, 0x06, 0x83, 0x76, 0xfb,
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0x76, 0xfb, 0x72, 0xfb, 0x7a, 0xf8, 0xf8, 0xff, };
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#define action_copy_mask_width 16
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#define action_copy_mask_height 16
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static const guchar action_copy_mask_bits[] = {
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0x8f, 0x07, 0x8f, 0x07,
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0x8f, 0x07, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0x8f, 0x07,
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0x8f, 0x07, 0x8f, 0x07, 0x87, 0x07, 0x07, 0x00, };
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#define action_move_width 16
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#define action_move_height 16
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static const guchar action_move_bits[] = {
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0x00, 0x00, 0xfe, 0x7f, 0xfe, 0x1f, 0x06, 0xc0, 0x96, 0xff, 0x26, 0xff,
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0xc6, 0xf8, 0xd6, 0xe3, 0x96, 0x8f, 0xb6, 0xbf, 0x36, 0xc3, 0x76, 0xfb,
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0x76, 0xfa, 0xf2, 0xfa, 0xfa, 0xf8, 0xf8, 0xff, };
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#define action_move_mask_width 16
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#define action_move_mask_height 16
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static const guchar action_move_mask_bits[] = {
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0x6f, 0x00, 0xff, 0x00,
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0xff, 0x07, 0xef, 0x1f, 0xef, 0x7f, 0xcf, 0x7f, 0xcf, 0x3f, 0x8f, 0x07,
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0x8f, 0x07, 0x0f, 0x07, 0x07, 0x07, 0x07, 0x00, };
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#define action_link_width 16
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#define action_link_height 16
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static const guchar action_link_bits[] = {
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0x00, 0x00, 0xfe, 0x7f, 0xfe, 0x1f, 0x06, 0xc0, 0x36, 0xf8, 0xd6, 0xf7,
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0x66, 0xec, 0xa6, 0xe8, 0x26, 0xdf, 0xe6, 0xbd, 0xd6, 0xa7, 0xb6, 0xa8,
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0xb6, 0xb1, 0x72, 0xdf, 0xfa, 0xe0, 0xf8, 0xff, };
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#define action_link_mask_width 16
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#define action_link_mask_height 16
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static const guchar action_link_mask_bits[] = {
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xcf, 0x07, 0xef, 0x0f,
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0xff, 0x1f, 0x7f, 0x1f, 0xff, 0x3f, 0xff, 0x7f, 0xef, 0x7f, 0xcf, 0x77,
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0xcf, 0x7f, 0x8f, 0x3f, 0x07, 0x1f, 0x07, 0x00, };
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#define action_none_width 16
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#define action_none_height 16
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static const guchar action_none_bits[] = {
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0x00, 0x00, 0xfe, 0x7f, 0xfe, 0x1f, 0x06, 0xc0, 0xf6, 0xff, 0xf6, 0xff,
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0xf6, 0xff, 0xf6, 0xff, 0xf6, 0xff, 0xf6, 0xff, 0xf6, 0xff, 0xf6, 0xff,
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0xf6, 0xff, 0xf2, 0xff, 0xfa, 0xff, 0xf8, 0xff, };
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#define action_none_mask_width 16
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#define action_none_mask_height 16
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static const guchar action_none_mask_bits[] = {
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0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0x0f, 0x00, 0x0f, 0x00,
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0x0f, 0x00, 0x0f, 0x00, 0x0f, 0x00, 0x0f, 0x00, 0x0f, 0x00, 0x0f, 0x00,
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0x0f, 0x00, 0x0f, 0x00, 0x07, 0x00, 0x07, 0x00, };
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#define CURSOR_WIDTH 16
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#define CURSOR_HEIGHT 16
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static struct {
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GdkDragAction action;
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const guchar *bits;
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const guchar *mask;
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GdkCursor *cursor;
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} drag_cursors[] = {
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{ GDK_ACTION_DEFAULT, 0 },
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{ GDK_ACTION_ASK, action_ask_bits, action_ask_mask_bits, NULL },
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{ GDK_ACTION_COPY, action_copy_bits, action_copy_mask_bits, NULL },
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{ GDK_ACTION_MOVE, action_move_bits, action_move_mask_bits, NULL },
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{ GDK_ACTION_LINK, action_link_bits, action_link_mask_bits, NULL },
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{ 0 , action_none_bits, action_none_mask_bits, NULL },
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};
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static const gint n_drag_cursors = sizeof (drag_cursors) / sizeof (drag_cursors[0]);
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/*********************
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* Utility functions *
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*********************/
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static void
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set_can_change_screen (GtkWidget *widget,
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gboolean can_change_screen)
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{
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can_change_screen = can_change_screen != FALSE;
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g_object_set_data (G_OBJECT (widget), "gtk-dnd-can-change-screen",
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GUINT_TO_POINTER (can_change_screen));
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}
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static gboolean
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get_can_change_screen (GtkWidget *widget)
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{
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return g_object_get_data (G_OBJECT (widget), "gtk-dnd-can-change-screen") != NULL;
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}
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/*************************************************************
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* gtk_drag_get_ipc_widget:
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* Return a invisible, off-screen, override-redirect
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* widget for IPC.
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* arguments:
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*
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* results:
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*************************************************************/
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static GtkWidget *
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gtk_drag_get_ipc_widget (GdkScreen *screen)
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{
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GtkWidget *result;
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GSList *drag_widgets = g_object_get_data (G_OBJECT (screen),
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"gtk-dnd-ipc-widgets");
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if (drag_widgets)
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{
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GSList *tmp = drag_widgets;
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result = drag_widgets->data;
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drag_widgets = drag_widgets->next;
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g_object_set_data (G_OBJECT (screen),
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"gtk-dnd-ipc-widgets",
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drag_widgets);
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g_slist_free_1 (tmp);
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}
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else
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{
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result = gtk_invisible_new_for_screen (screen);
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gtk_widget_show (result);
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}
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return result;
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}
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/***************************************************************
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* gtk_drag_release_ipc_widget:
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* Releases widget retrieved with gtk_drag_get_ipc_widget ()
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* arguments:
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* widget: the widget to release.
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* results:
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***************************************************************/
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static void
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gtk_drag_release_ipc_widget (GtkWidget *widget)
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{
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GdkScreen *screen = gtk_widget_get_screen (widget);
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GSList *drag_widgets = g_object_get_data (G_OBJECT (screen),
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"gtk-dnd-ipc-widgets");
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drag_widgets = g_slist_prepend (drag_widgets, widget);
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g_object_set_data (G_OBJECT (screen),
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"gtk-dnd-ipc-widgets",
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drag_widgets);
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}
|
|
|
|
static guint32
|
|
gtk_drag_get_event_time (GdkEvent *event)
|
|
{
|
|
guint32 tm = GDK_CURRENT_TIME;
|
|
|
|
if (event)
|
|
switch (event->type)
|
|
{
|
|
case GDK_MOTION_NOTIFY:
|
|
tm = event->motion.time; break;
|
|
case GDK_BUTTON_PRESS:
|
|
case GDK_2BUTTON_PRESS:
|
|
case GDK_3BUTTON_PRESS:
|
|
case GDK_BUTTON_RELEASE:
|
|
tm = event->button.time; break;
|
|
case GDK_KEY_PRESS:
|
|
case GDK_KEY_RELEASE:
|
|
tm = event->key.time; break;
|
|
case GDK_ENTER_NOTIFY:
|
|
case GDK_LEAVE_NOTIFY:
|
|
tm = event->crossing.time; break;
|
|
case GDK_PROPERTY_NOTIFY:
|
|
tm = event->property.time; break;
|
|
case GDK_SELECTION_CLEAR:
|
|
case GDK_SELECTION_REQUEST:
|
|
case GDK_SELECTION_NOTIFY:
|
|
tm = event->selection.time; break;
|
|
case GDK_PROXIMITY_IN:
|
|
case GDK_PROXIMITY_OUT:
|
|
tm = event->proximity.time; break;
|
|
default: /* use current time */
|
|
break;
|
|
}
|
|
|
|
return tm;
|
|
}
|
|
|
|
static void
|
|
gtk_drag_get_event_actions (GdkEvent *event,
|
|
gint button,
|
|
GdkDragAction actions,
|
|
GdkDragAction *suggested_action,
|
|
GdkDragAction *possible_actions)
|
|
{
|
|
*suggested_action = 0;
|
|
*possible_actions = 0;
|
|
|
|
if (event)
|
|
{
|
|
GdkModifierType state = 0;
|
|
|
|
switch (event->type)
|
|
{
|
|
case GDK_MOTION_NOTIFY:
|
|
state = event->motion.state;
|
|
break;
|
|
case GDK_BUTTON_PRESS:
|
|
case GDK_2BUTTON_PRESS:
|
|
case GDK_3BUTTON_PRESS:
|
|
case GDK_BUTTON_RELEASE:
|
|
state = event->button.state;
|
|
break;
|
|
case GDK_KEY_PRESS:
|
|
case GDK_KEY_RELEASE:
|
|
state = event->key.state;
|
|
break;
|
|
case GDK_ENTER_NOTIFY:
|
|
case GDK_LEAVE_NOTIFY:
|
|
state = event->crossing.state;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if ((button == 2 || button == 3) && (actions & GDK_ACTION_ASK))
|
|
{
|
|
*suggested_action = GDK_ACTION_ASK;
|
|
*possible_actions = actions;
|
|
}
|
|
else if (state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK))
|
|
{
|
|
if ((state & GDK_SHIFT_MASK) && (state & GDK_CONTROL_MASK))
|
|
{
|
|
if (actions & GDK_ACTION_LINK)
|
|
{
|
|
*suggested_action = GDK_ACTION_LINK;
|
|
*possible_actions = GDK_ACTION_LINK;
|
|
}
|
|
}
|
|
else if (state & GDK_CONTROL_MASK)
|
|
{
|
|
if (actions & GDK_ACTION_COPY)
|
|
{
|
|
*suggested_action = GDK_ACTION_COPY;
|
|
*possible_actions = GDK_ACTION_COPY;
|
|
}
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
if (actions & GDK_ACTION_MOVE)
|
|
{
|
|
*suggested_action = GDK_ACTION_MOVE;
|
|
*possible_actions = GDK_ACTION_MOVE;
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
*possible_actions = actions;
|
|
|
|
if ((state & (GDK_MOD1_MASK)) && (actions & GDK_ACTION_ASK))
|
|
*suggested_action = GDK_ACTION_ASK;
|
|
else if (actions & GDK_ACTION_COPY)
|
|
*suggested_action = GDK_ACTION_COPY;
|
|
else if (actions & GDK_ACTION_MOVE)
|
|
*suggested_action = GDK_ACTION_MOVE;
|
|
else if (actions & GDK_ACTION_LINK)
|
|
*suggested_action = GDK_ACTION_LINK;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
*possible_actions = actions;
|
|
|
|
if (actions & GDK_ACTION_COPY)
|
|
*suggested_action = GDK_ACTION_COPY;
|
|
else if (actions & GDK_ACTION_MOVE)
|
|
*suggested_action = GDK_ACTION_MOVE;
|
|
else if (actions & GDK_ACTION_LINK)
|
|
*suggested_action = GDK_ACTION_LINK;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
static GdkCursor *
|
|
gtk_drag_get_cursor (GdkDisplay *display,
|
|
GdkDragAction action)
|
|
{
|
|
gint i;
|
|
|
|
for (i = 0 ; i < n_drag_cursors - 1; i++)
|
|
if (drag_cursors[i].action == action)
|
|
break;
|
|
if (drag_cursors[i].cursor != NULL)
|
|
{
|
|
if (display != gdk_cursor_get_display (drag_cursors[i].cursor))
|
|
{
|
|
gdk_cursor_unref (drag_cursors[i].cursor);
|
|
drag_cursors[i].cursor = NULL;
|
|
}
|
|
}
|
|
|
|
if (drag_cursors[i].cursor == NULL)
|
|
{
|
|
GdkColor bg = { 0, 0xffff, 0xffff, 0xffff };
|
|
GdkColor fg = { 0, 0x0000, 0x0000, 0x0000 };
|
|
GdkScreen *screen = gdk_display_get_default_screen (display);
|
|
GdkWindow *window = gdk_screen_get_root_window (screen);
|
|
|
|
GdkPixmap *pixmap =
|
|
gdk_bitmap_create_from_data (window, (gchar *)drag_cursors[i].bits, CURSOR_WIDTH, CURSOR_HEIGHT);
|
|
|
|
GdkPixmap *mask =
|
|
gdk_bitmap_create_from_data (window, (gchar *)drag_cursors[i].mask, CURSOR_WIDTH, CURSOR_HEIGHT);
|
|
|
|
drag_cursors[i].cursor = gdk_cursor_new_from_pixmap (pixmap, mask, &fg, &bg, 0, 0);
|
|
|
|
g_object_unref (pixmap);
|
|
g_object_unref (mask);
|
|
}
|
|
|
|
return drag_cursors[i].cursor;
|
|
}
|
|
|
|
/********************
|
|
* Destination side *
|
|
********************/
|
|
|
|
/*************************************************************
|
|
* gtk_drag_get_data:
|
|
* Get the data for a drag or drop
|
|
* arguments:
|
|
* context - drag context
|
|
* target - format to retrieve the data in.
|
|
* time - timestamp of triggering event.
|
|
*
|
|
* results:
|
|
*************************************************************/
|
|
|
|
void
|
|
gtk_drag_get_data (GtkWidget *widget,
|
|
GdkDragContext *context,
|
|
GdkAtom target,
|
|
guint32 time)
|
|
{
|
|
GtkWidget *selection_widget;
|
|
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
|
|
g_return_if_fail (!context->is_source);
|
|
|
|
selection_widget = gtk_drag_get_ipc_widget (gtk_widget_get_screen (widget));
|
|
|
|
g_object_ref (context);
|
|
g_object_ref (widget);
|
|
|
|
g_signal_connect (selection_widget, "selection_received",
|
|
G_CALLBACK (gtk_drag_selection_received), widget);
|
|
|
|
g_object_set_data (G_OBJECT (selection_widget), "drag-context", context);
|
|
|
|
gtk_selection_convert (selection_widget,
|
|
gdk_drag_get_selection (context),
|
|
target,
|
|
time);
|
|
}
|
|
|
|
|
|
/*************************************************************
|
|
* gtk_drag_get_source_widget:
|
|
* Get the widget the was the source of this drag, if
|
|
* the drag originated from this application.
|
|
* arguments:
|
|
* context: The drag context for this drag
|
|
* results:
|
|
* The source widget, or NULL if the drag originated from
|
|
* a different application.
|
|
*************************************************************/
|
|
|
|
GtkWidget *
|
|
gtk_drag_get_source_widget (GdkDragContext *context)
|
|
{
|
|
GSList *tmp_list;
|
|
|
|
g_return_val_if_fail (GDK_IS_DRAG_CONTEXT (context), NULL);
|
|
g_return_val_if_fail (!context->is_source, NULL);
|
|
|
|
tmp_list = source_widgets;
|
|
while (tmp_list)
|
|
{
|
|
GtkWidget *ipc_widget = tmp_list->data;
|
|
|
|
if (ipc_widget->window == context->source_window)
|
|
{
|
|
GtkDragSourceInfo *info;
|
|
info = g_object_get_data (G_OBJECT (ipc_widget), "gtk-info");
|
|
|
|
return info ? info->widget : NULL;
|
|
}
|
|
|
|
tmp_list = tmp_list->next;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/*************************************************************
|
|
* gtk_drag_finish:
|
|
* Notify the drag source that the transfer of data
|
|
* is complete.
|
|
* arguments:
|
|
* context: The drag context for this drag
|
|
* success: Was the data successfully transferred?
|
|
* time: The timestamp to use when notifying the destination.
|
|
* results:
|
|
*************************************************************/
|
|
|
|
void
|
|
gtk_drag_finish (GdkDragContext *context,
|
|
gboolean success,
|
|
gboolean del,
|
|
guint32 time)
|
|
{
|
|
GdkAtom target = GDK_NONE;
|
|
|
|
g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
|
|
g_return_if_fail (!context->is_source);
|
|
|
|
if (success && del)
|
|
{
|
|
target = gdk_atom_intern ("DELETE", FALSE);
|
|
}
|
|
else if (context->protocol == GDK_DRAG_PROTO_MOTIF)
|
|
{
|
|
target = gdk_atom_intern (success ?
|
|
"XmTRANSFER_SUCCESS" :
|
|
"XmTRANSFER_FAILURE",
|
|
FALSE);
|
|
}
|
|
|
|
if (target != GDK_NONE)
|
|
{
|
|
GtkWidget *selection_widget = gtk_drag_get_ipc_widget (gdk_drawable_get_screen (context->source_window));
|
|
|
|
g_object_ref (context);
|
|
|
|
g_object_set_data (G_OBJECT (selection_widget), "drag-context", context);
|
|
g_signal_connect (selection_widget, "selection_received",
|
|
G_CALLBACK (gtk_drag_selection_received),
|
|
NULL);
|
|
|
|
gtk_selection_convert (selection_widget,
|
|
gdk_drag_get_selection (context),
|
|
target,
|
|
time);
|
|
}
|
|
|
|
if (!(success && del))
|
|
gdk_drop_finish (context, success, time);
|
|
}
|
|
|
|
/*************************************************************
|
|
* gtk_drag_highlight_expose:
|
|
* Callback for expose_event for highlighted widgets.
|
|
* arguments:
|
|
* widget:
|
|
* event:
|
|
* data:
|
|
* results:
|
|
*************************************************************/
|
|
|
|
static gboolean
|
|
gtk_drag_highlight_expose (GtkWidget *widget,
|
|
GdkEventExpose *event,
|
|
gpointer data)
|
|
{
|
|
gint x, y, width, height;
|
|
|
|
if (GTK_WIDGET_DRAWABLE (widget))
|
|
{
|
|
if (GTK_WIDGET_NO_WINDOW (widget))
|
|
{
|
|
x = widget->allocation.x;
|
|
y = widget->allocation.y;
|
|
width = widget->allocation.width;
|
|
height = widget->allocation.height;
|
|
}
|
|
else
|
|
{
|
|
x = 0;
|
|
y = 0;
|
|
gdk_drawable_get_size (widget->window, &width, &height);
|
|
}
|
|
|
|
gtk_paint_shadow (widget->style, widget->window,
|
|
GTK_STATE_NORMAL, GTK_SHADOW_OUT,
|
|
NULL, widget, "dnd",
|
|
x, y, width, height);
|
|
|
|
gdk_draw_rectangle (widget->window,
|
|
widget->style->black_gc,
|
|
FALSE,
|
|
x, y, width - 1, height - 1);
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/*************************************************************
|
|
* gtk_drag_highlight:
|
|
* Highlight the given widget in the default manner.
|
|
* arguments:
|
|
* widget:
|
|
* results:
|
|
*************************************************************/
|
|
|
|
void
|
|
gtk_drag_highlight (GtkWidget *widget)
|
|
{
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
|
|
g_signal_connect_after (widget, "expose_event",
|
|
G_CALLBACK (gtk_drag_highlight_expose),
|
|
NULL);
|
|
|
|
gtk_widget_queue_draw (widget);
|
|
}
|
|
|
|
/*************************************************************
|
|
* gtk_drag_unhighlight:
|
|
* Refresh the given widget to remove the highlight.
|
|
* arguments:
|
|
* widget:
|
|
* results:
|
|
*************************************************************/
|
|
|
|
void
|
|
gtk_drag_unhighlight (GtkWidget *widget)
|
|
{
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
|
|
g_signal_handlers_disconnect_by_func (widget,
|
|
gtk_drag_highlight_expose,
|
|
NULL);
|
|
|
|
gtk_widget_queue_draw (widget);
|
|
}
|
|
|
|
static void
|
|
gtk_drag_dest_set_internal (GtkWidget *widget,
|
|
GtkDragDestSite *site)
|
|
{
|
|
GtkDragDestSite *old_site;
|
|
|
|
g_return_if_fail (widget != NULL);
|
|
|
|
/* HACK, do this in the destroy */
|
|
old_site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest");
|
|
if (old_site)
|
|
{
|
|
g_signal_handlers_disconnect_by_func (widget,
|
|
gtk_drag_dest_realized,
|
|
old_site);
|
|
g_signal_handlers_disconnect_by_func (widget,
|
|
gtk_drag_dest_hierarchy_changed,
|
|
old_site);
|
|
}
|
|
|
|
if (GTK_WIDGET_REALIZED (widget))
|
|
gtk_drag_dest_realized (widget);
|
|
|
|
g_signal_connect (widget, "realize",
|
|
G_CALLBACK (gtk_drag_dest_realized), site);
|
|
g_signal_connect (widget, "hierarchy_changed",
|
|
G_CALLBACK (gtk_drag_dest_hierarchy_changed), site);
|
|
|
|
g_object_set_data_full (G_OBJECT (widget), "gtk-drag-dest",
|
|
site, gtk_drag_dest_site_destroy);
|
|
}
|
|
|
|
|
|
/*************************************************************
|
|
* gtk_drag_dest_set:
|
|
* Register a drop site, and possibly add default behaviors.
|
|
* arguments:
|
|
* widget:
|
|
* flags: Which types of default drag behavior to use
|
|
* targets: Table of targets that can be accepted
|
|
* n_targets: Number of of entries in targets
|
|
* actions:
|
|
* results:
|
|
*************************************************************/
|
|
|
|
void
|
|
gtk_drag_dest_set (GtkWidget *widget,
|
|
GtkDestDefaults flags,
|
|
const GtkTargetEntry *targets,
|
|
gint n_targets,
|
|
GdkDragAction actions)
|
|
{
|
|
GtkDragDestSite *site;
|
|
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
|
|
site = g_new (GtkDragDestSite, 1);
|
|
|
|
site->flags = flags;
|
|
site->have_drag = FALSE;
|
|
if (targets)
|
|
site->target_list = gtk_target_list_new (targets, n_targets);
|
|
else
|
|
site->target_list = NULL;
|
|
site->actions = actions;
|
|
site->do_proxy = FALSE;
|
|
site->proxy_window = NULL;
|
|
|
|
gtk_drag_dest_set_internal (widget, site);
|
|
}
|
|
|
|
/*************************************************************
|
|
* gtk_drag_dest_set_proxy:
|
|
* Set up this widget to proxy drags elsewhere.
|
|
* arguments:
|
|
* widget:
|
|
* proxy_window: window to which forward drag events
|
|
* protocol: Drag protocol which the dest widget accepts
|
|
* use_coordinates: If true, send the same coordinates to the
|
|
* destination, because it is a embedded
|
|
* subwindow.
|
|
* results:
|
|
*************************************************************/
|
|
|
|
void
|
|
gtk_drag_dest_set_proxy (GtkWidget *widget,
|
|
GdkWindow *proxy_window,
|
|
GdkDragProtocol protocol,
|
|
gboolean use_coordinates)
|
|
{
|
|
GtkDragDestSite *site;
|
|
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
g_return_if_fail (!proxy_window || GDK_IS_WINDOW (proxy_window));
|
|
|
|
site = g_new (GtkDragDestSite, 1);
|
|
|
|
site->flags = 0;
|
|
site->have_drag = FALSE;
|
|
site->target_list = NULL;
|
|
site->actions = 0;
|
|
site->proxy_window = proxy_window;
|
|
if (proxy_window)
|
|
g_object_ref (proxy_window);
|
|
site->do_proxy = TRUE;
|
|
site->proxy_protocol = protocol;
|
|
site->proxy_coords = use_coordinates;
|
|
|
|
gtk_drag_dest_set_internal (widget, site);
|
|
}
|
|
|
|
/*************************************************************
|
|
* gtk_drag_dest_unset
|
|
* Unregister this widget as a drag target.
|
|
* arguments:
|
|
* widget:
|
|
* results:
|
|
*************************************************************/
|
|
|
|
void
|
|
gtk_drag_dest_unset (GtkWidget *widget)
|
|
{
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
|
|
g_object_set_data (G_OBJECT (widget), "gtk-drag-dest", NULL);
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_dest_get_target_list:
|
|
* @widget: a #GtkWidget
|
|
*
|
|
* Returns the list of targets this widget can accept from
|
|
* drag-and-drop.
|
|
*
|
|
* Return value: the #GtkTargetList, or %NULL if none
|
|
**/
|
|
GtkTargetList*
|
|
gtk_drag_dest_get_target_list (GtkWidget *widget)
|
|
{
|
|
GtkDragDestSite *site;
|
|
|
|
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
|
|
|
|
site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest");
|
|
|
|
return site ? site->target_list : NULL;
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_dest_set_target_list:
|
|
* @widget: a #GtkWidget that's a drag destination
|
|
* @target_list: list of droppable targets, or %NULL for none
|
|
*
|
|
* Sets the target types that this widget can accept from drag-and-drop.
|
|
* The widget must first be made into a drag destination with
|
|
* gtk_drag_dest_set().
|
|
**/
|
|
void
|
|
gtk_drag_dest_set_target_list (GtkWidget *widget,
|
|
GtkTargetList *target_list)
|
|
{
|
|
GtkDragDestSite *site;
|
|
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
|
|
site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest");
|
|
|
|
if (site == NULL)
|
|
{
|
|
g_warning ("can't set a target list on a widget until you've called gtk_drag_dest_set() to make the widget into a drag destination");
|
|
return;
|
|
}
|
|
|
|
if (target_list)
|
|
gtk_target_list_ref (target_list);
|
|
|
|
if (site->target_list)
|
|
gtk_target_list_unref (site->target_list);
|
|
|
|
site->target_list = target_list;
|
|
}
|
|
|
|
|
|
/*************************************************************
|
|
* _gtk_drag_dest_handle_event:
|
|
* Called from widget event handling code on Drag events
|
|
* for destinations.
|
|
*
|
|
* arguments:
|
|
* toplevel: Toplevel widget that received the event
|
|
* event:
|
|
* results:
|
|
*************************************************************/
|
|
|
|
void
|
|
_gtk_drag_dest_handle_event (GtkWidget *toplevel,
|
|
GdkEvent *event)
|
|
{
|
|
GtkDragDestInfo *info;
|
|
GdkDragContext *context;
|
|
|
|
g_return_if_fail (toplevel != NULL);
|
|
g_return_if_fail (event != NULL);
|
|
|
|
context = event->dnd.context;
|
|
|
|
info = gtk_drag_get_dest_info (context, TRUE);
|
|
|
|
/* Find the widget for the event */
|
|
switch (event->type)
|
|
{
|
|
case GDK_DRAG_ENTER:
|
|
break;
|
|
|
|
case GDK_DRAG_LEAVE:
|
|
if (info->widget)
|
|
{
|
|
gtk_drag_dest_leave (info->widget, context, event->dnd.time);
|
|
info->widget = NULL;
|
|
}
|
|
break;
|
|
|
|
case GDK_DRAG_MOTION:
|
|
case GDK_DROP_START:
|
|
{
|
|
GtkDragFindData data;
|
|
gint tx, ty;
|
|
|
|
if (event->type == GDK_DROP_START)
|
|
{
|
|
info->dropped = TRUE;
|
|
/* We send a leave here so that the widget unhighlights
|
|
* properly.
|
|
*/
|
|
if (info->widget)
|
|
{
|
|
gtk_drag_dest_leave (info->widget, context, event->dnd.time);
|
|
info->widget = NULL;
|
|
}
|
|
}
|
|
|
|
gdk_window_get_origin (toplevel->window, &tx, &ty);
|
|
|
|
data.x = event->dnd.x_root - tx;
|
|
data.y = event->dnd.y_root - ty;
|
|
data.context = context;
|
|
data.info = info;
|
|
data.found = FALSE;
|
|
data.toplevel = TRUE;
|
|
data.callback = (event->type == GDK_DRAG_MOTION) ?
|
|
gtk_drag_dest_motion : gtk_drag_dest_drop;
|
|
data.time = event->dnd.time;
|
|
|
|
gtk_drag_find_widget (toplevel, &data);
|
|
|
|
if (info->widget && !data.found)
|
|
{
|
|
gtk_drag_dest_leave (info->widget, context, event->dnd.time);
|
|
info->widget = NULL;
|
|
}
|
|
|
|
/* Send a reply.
|
|
*/
|
|
if (event->type == GDK_DRAG_MOTION)
|
|
{
|
|
if (!data.found)
|
|
gdk_drag_status (context, 0, event->dnd.time);
|
|
}
|
|
else if (event->type == GDK_DROP_START && !info->proxy_source)
|
|
{
|
|
gdk_drop_reply (context, data.found, event->dnd.time);
|
|
if ((context->protocol == GDK_DRAG_PROTO_MOTIF) && !data.found)
|
|
gtk_drag_finish (context, FALSE, FALSE, event->dnd.time);
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
g_assert_not_reached ();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_dest_find_target:
|
|
* @widget: drag destination widget
|
|
* @context: drag context
|
|
* @target_list: list of droppable targets, or %NULL to use
|
|
* gtk_drag_dest_get_target_list (@widget).
|
|
*
|
|
* Looks for a match between @context->targets and the
|
|
* @dest_target_list, returning the first matching target, otherwise
|
|
* returning %GDK_NONE. @dest_target_list should usually be the return
|
|
* value from gtk_drag_dest_get_target_list(), but some widgets may
|
|
* have different valid targets for different parts of the widget; in
|
|
* that case, they will have to implement a drag_motion handler that
|
|
* passes the correct target list to this function.
|
|
*
|
|
* Return value: first target that the source offers and the dest can accept, or %GDK_NONE
|
|
**/
|
|
GdkAtom
|
|
gtk_drag_dest_find_target (GtkWidget *widget,
|
|
GdkDragContext *context,
|
|
GtkTargetList *target_list)
|
|
{
|
|
GList *tmp_target;
|
|
GList *tmp_source = NULL;
|
|
GtkWidget *source_widget;
|
|
|
|
g_return_val_if_fail (GTK_IS_WIDGET (widget), GDK_NONE);
|
|
g_return_val_if_fail (GDK_IS_DRAG_CONTEXT (context), GDK_NONE);
|
|
g_return_val_if_fail (!context->is_source, GDK_NONE);
|
|
|
|
|
|
source_widget = gtk_drag_get_source_widget (context);
|
|
|
|
if (target_list == NULL)
|
|
target_list = gtk_drag_dest_get_target_list (widget);
|
|
|
|
if (target_list == NULL)
|
|
return GDK_NONE;
|
|
|
|
tmp_target = target_list->list;
|
|
while (tmp_target)
|
|
{
|
|
GtkTargetPair *pair = tmp_target->data;
|
|
tmp_source = context->targets;
|
|
while (tmp_source)
|
|
{
|
|
if (tmp_source->data == GUINT_TO_POINTER (pair->target))
|
|
{
|
|
if ((!(pair->flags & GTK_TARGET_SAME_APP) || source_widget) &&
|
|
(!(pair->flags & GTK_TARGET_SAME_WIDGET) || (source_widget == widget)))
|
|
return pair->target;
|
|
else
|
|
break;
|
|
}
|
|
tmp_source = tmp_source->next;
|
|
}
|
|
tmp_target = tmp_target->next;
|
|
}
|
|
|
|
return GDK_NONE;
|
|
}
|
|
|
|
static void
|
|
gtk_drag_selection_received (GtkWidget *widget,
|
|
GtkSelectionData *selection_data,
|
|
guint32 time,
|
|
gpointer data)
|
|
{
|
|
GdkDragContext *context;
|
|
GtkDragDestInfo *info;
|
|
GtkWidget *drop_widget;
|
|
|
|
drop_widget = data;
|
|
|
|
context = g_object_get_data (G_OBJECT (widget), "drag-context");
|
|
info = gtk_drag_get_dest_info (context, FALSE);
|
|
|
|
if (info->proxy_data &&
|
|
info->proxy_data->target == selection_data->target)
|
|
{
|
|
gtk_selection_data_set (info->proxy_data,
|
|
selection_data->type,
|
|
selection_data->format,
|
|
selection_data->data,
|
|
selection_data->length);
|
|
gtk_main_quit ();
|
|
return;
|
|
}
|
|
|
|
if (selection_data->target == gdk_atom_intern ("DELETE", FALSE))
|
|
{
|
|
gtk_drag_finish (context, TRUE, FALSE, time);
|
|
}
|
|
else if ((selection_data->target == gdk_atom_intern ("XmTRANSFER_SUCCESS", FALSE)) ||
|
|
(selection_data->target == gdk_atom_intern ("XmTRANSFER_FAILURE", FALSE)))
|
|
{
|
|
/* Do nothing */
|
|
}
|
|
else
|
|
{
|
|
GtkDragDestSite *site;
|
|
|
|
site = g_object_get_data (G_OBJECT (drop_widget), "gtk-drag-dest");
|
|
|
|
if (site && site->target_list)
|
|
{
|
|
guint target_info;
|
|
|
|
if (gtk_target_list_find (site->target_list,
|
|
selection_data->target,
|
|
&target_info))
|
|
{
|
|
if (!(site->flags & GTK_DEST_DEFAULT_DROP) ||
|
|
selection_data->length >= 0)
|
|
g_signal_emit_by_name (drop_widget,
|
|
"drag_data_received",
|
|
context, info->drop_x, info->drop_y,
|
|
selection_data,
|
|
target_info, time);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
g_signal_emit_by_name (drop_widget,
|
|
"drag_data_received",
|
|
context, info->drop_x, info->drop_y,
|
|
selection_data,
|
|
0, time);
|
|
}
|
|
|
|
if (site && site->flags & GTK_DEST_DEFAULT_DROP)
|
|
{
|
|
|
|
gtk_drag_finish (context,
|
|
(selection_data->length >= 0),
|
|
(context->action == GDK_ACTION_MOVE),
|
|
time);
|
|
}
|
|
|
|
g_object_unref (drop_widget);
|
|
}
|
|
|
|
g_signal_handlers_disconnect_by_func (widget,
|
|
gtk_drag_selection_received,
|
|
data);
|
|
|
|
g_object_set_data (G_OBJECT (widget), "drag-context", NULL);
|
|
g_object_unref (context);
|
|
|
|
gtk_drag_release_ipc_widget (widget);
|
|
}
|
|
|
|
static void
|
|
prepend_and_ref_widget (GtkWidget *widget,
|
|
gpointer data)
|
|
{
|
|
GSList **slist_p = data;
|
|
|
|
*slist_p = g_slist_prepend (*slist_p, g_object_ref (widget));
|
|
}
|
|
|
|
/*************************************************************
|
|
* gtk_drag_find_widget:
|
|
* Recursive callback used to locate widgets for
|
|
* DRAG_MOTION and DROP_START events.
|
|
* arguments:
|
|
*
|
|
* results:
|
|
*************************************************************/
|
|
|
|
static void
|
|
gtk_drag_find_widget (GtkWidget *widget,
|
|
GtkDragFindData *data)
|
|
{
|
|
GtkAllocation new_allocation;
|
|
gint allocation_to_window_x = 0;
|
|
gint allocation_to_window_y = 0;
|
|
gint x_offset = 0;
|
|
gint y_offset = 0;
|
|
|
|
if (data->found || !GTK_WIDGET_MAPPED (widget) || !GTK_WIDGET_SENSITIVE (widget))
|
|
return;
|
|
|
|
/* Note that in the following code, we only count the
|
|
* position as being inside a WINDOW widget if it is inside
|
|
* widget->window; points that are outside of widget->window
|
|
* but within the allocation are not counted. This is consistent
|
|
* with the way we highlight drag targets.
|
|
*
|
|
* data->x,y are relative to widget->parent->window (if
|
|
* widget is not a toplevel, widget->window otherwise).
|
|
* We compute the allocation of widget in the same coordinates,
|
|
* clipping to widget->window, and all intermediate
|
|
* windows. If data->x,y is inside that, then we translate
|
|
* our coordinates to be relative to widget->window and
|
|
* recurse.
|
|
*/
|
|
new_allocation = widget->allocation;
|
|
|
|
if (widget->parent)
|
|
{
|
|
gint tx, ty;
|
|
GdkWindow *window = widget->window;
|
|
|
|
/* Compute the offset from allocation-relative to
|
|
* window-relative coordinates.
|
|
*/
|
|
allocation_to_window_x = widget->allocation.x;
|
|
allocation_to_window_y = widget->allocation.y;
|
|
|
|
if (!GTK_WIDGET_NO_WINDOW (widget))
|
|
{
|
|
/* The allocation is relative to the parent window for
|
|
* window widgets, not to widget->window.
|
|
*/
|
|
gdk_window_get_position (window, &tx, &ty);
|
|
|
|
allocation_to_window_x -= tx;
|
|
allocation_to_window_y -= ty;
|
|
}
|
|
|
|
new_allocation.x = 0 + allocation_to_window_x;
|
|
new_allocation.y = 0 + allocation_to_window_y;
|
|
|
|
while (window && window != widget->parent->window)
|
|
{
|
|
GdkRectangle window_rect = { 0, 0, 0, 0 };
|
|
|
|
gdk_drawable_get_size (window, &window_rect.width, &window_rect.height);
|
|
|
|
gdk_rectangle_intersect (&new_allocation, &window_rect, &new_allocation);
|
|
|
|
gdk_window_get_position (window, &tx, &ty);
|
|
new_allocation.x += tx;
|
|
x_offset += tx;
|
|
new_allocation.y += ty;
|
|
y_offset += ty;
|
|
|
|
window = gdk_window_get_parent (window);
|
|
}
|
|
|
|
if (!window) /* Window and widget heirarchies didn't match. */
|
|
return;
|
|
}
|
|
|
|
if (data->toplevel ||
|
|
((data->x >= new_allocation.x) && (data->y >= new_allocation.y) &&
|
|
(data->x < new_allocation.x + new_allocation.width) &&
|
|
(data->y < new_allocation.y + new_allocation.height)))
|
|
{
|
|
/* First, check if the drag is in a valid drop site in
|
|
* one of our children
|
|
*/
|
|
if (GTK_IS_CONTAINER (widget))
|
|
{
|
|
GtkDragFindData new_data = *data;
|
|
GSList *children = NULL;
|
|
GSList *tmp_list;
|
|
|
|
new_data.x -= x_offset;
|
|
new_data.y -= y_offset;
|
|
new_data.found = FALSE;
|
|
new_data.toplevel = FALSE;
|
|
|
|
/* need to reference children temporarily in case the
|
|
* ::drag_motion/::drag_drop callbacks change the widget heirarchy.
|
|
*/
|
|
gtk_container_forall (GTK_CONTAINER (widget), prepend_and_ref_widget, &children);
|
|
for (tmp_list = children; tmp_list; tmp_list = tmp_list->next)
|
|
{
|
|
if (!new_data.found && GTK_WIDGET_DRAWABLE (tmp_list->data))
|
|
gtk_drag_find_widget (tmp_list->data, &new_data);
|
|
g_object_unref (tmp_list->data);
|
|
}
|
|
g_slist_free (children);
|
|
|
|
data->found = new_data.found;
|
|
}
|
|
|
|
/* If not, and this widget is registered as a drop site, check to
|
|
* emit "drag_motion" to check if we are actually in
|
|
* a drop site.
|
|
*/
|
|
if (!data->found &&
|
|
g_object_get_data (G_OBJECT (widget), "gtk-drag-dest"))
|
|
{
|
|
data->found = data->callback (widget,
|
|
data->context,
|
|
data->x - x_offset - allocation_to_window_x,
|
|
data->y - y_offset - allocation_to_window_y,
|
|
data->time);
|
|
/* If so, send a "drag_leave" to the last widget */
|
|
if (data->found)
|
|
{
|
|
if (data->info->widget && data->info->widget != widget)
|
|
{
|
|
gtk_drag_dest_leave (data->info->widget, data->context, data->time);
|
|
}
|
|
data->info->widget = widget;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_drag_proxy_begin (GtkWidget *widget,
|
|
GtkDragDestInfo *dest_info,
|
|
guint32 time)
|
|
{
|
|
GtkDragSourceInfo *source_info;
|
|
GList *tmp_list;
|
|
GdkDragContext *context;
|
|
GtkWidget *ipc_widget;
|
|
|
|
if (dest_info->proxy_source)
|
|
{
|
|
gdk_drag_abort (dest_info->proxy_source->context, time);
|
|
gtk_drag_source_info_destroy (dest_info->proxy_source);
|
|
dest_info->proxy_source = NULL;
|
|
}
|
|
|
|
ipc_widget = gtk_drag_get_ipc_widget (gtk_widget_get_screen (widget));
|
|
context = gdk_drag_begin (ipc_widget->window,
|
|
dest_info->context->targets);
|
|
|
|
source_info = gtk_drag_get_source_info (context, TRUE);
|
|
|
|
source_info->ipc_widget = ipc_widget;
|
|
source_info->widget = gtk_widget_ref (widget);
|
|
|
|
source_info->target_list = gtk_target_list_new (NULL, 0);
|
|
tmp_list = dest_info->context->targets;
|
|
while (tmp_list)
|
|
{
|
|
gtk_target_list_add (source_info->target_list,
|
|
GDK_POINTER_TO_ATOM (tmp_list->data), 0, 0);
|
|
tmp_list = tmp_list->next;
|
|
}
|
|
|
|
source_info->proxy_dest = dest_info;
|
|
|
|
g_signal_connect (ipc_widget,
|
|
"selection_get",
|
|
G_CALLBACK (gtk_drag_selection_get),
|
|
source_info);
|
|
|
|
dest_info->proxy_source = source_info;
|
|
}
|
|
|
|
static void
|
|
gtk_drag_dest_info_destroy (gpointer data)
|
|
{
|
|
GtkDragDestInfo *info = data;
|
|
|
|
g_free (info);
|
|
}
|
|
|
|
static GtkDragDestInfo *
|
|
gtk_drag_get_dest_info (GdkDragContext *context,
|
|
gboolean create)
|
|
{
|
|
GtkDragDestInfo *info;
|
|
static GQuark info_quark = 0;
|
|
if (!info_quark)
|
|
info_quark = g_quark_from_static_string ("gtk-dest-info");
|
|
|
|
info = g_object_get_qdata (G_OBJECT (context), info_quark);
|
|
if (!info && create)
|
|
{
|
|
info = g_new (GtkDragDestInfo, 1);
|
|
info->widget = NULL;
|
|
info->context = context;
|
|
info->proxy_source = NULL;
|
|
info->proxy_data = NULL;
|
|
info->dropped = FALSE;
|
|
info->proxy_drop_wait = FALSE;
|
|
g_object_set_qdata_full (G_OBJECT (context), info_quark,
|
|
info, gtk_drag_dest_info_destroy);
|
|
}
|
|
|
|
return info;
|
|
}
|
|
|
|
static GQuark dest_info_quark = 0;
|
|
|
|
static GtkDragSourceInfo *
|
|
gtk_drag_get_source_info (GdkDragContext *context,
|
|
gboolean create)
|
|
{
|
|
GtkDragSourceInfo *info;
|
|
if (!dest_info_quark)
|
|
dest_info_quark = g_quark_from_static_string ("gtk-source-info");
|
|
|
|
info = g_object_get_qdata (G_OBJECT (context), dest_info_quark);
|
|
if (!info && create)
|
|
{
|
|
info = g_new0 (GtkDragSourceInfo, 1);
|
|
info->context = context;
|
|
g_object_set_qdata (G_OBJECT (context), dest_info_quark, info);
|
|
}
|
|
|
|
return info;
|
|
}
|
|
|
|
static void
|
|
gtk_drag_clear_source_info (GdkDragContext *context)
|
|
{
|
|
g_object_set_qdata (G_OBJECT (context), dest_info_quark, NULL);
|
|
}
|
|
|
|
static void
|
|
gtk_drag_dest_realized (GtkWidget *widget)
|
|
{
|
|
GtkWidget *toplevel = gtk_widget_get_toplevel (widget);
|
|
|
|
if (GTK_WIDGET_TOPLEVEL (toplevel))
|
|
gdk_window_register_dnd (toplevel->window);
|
|
}
|
|
|
|
static void
|
|
gtk_drag_dest_hierarchy_changed (GtkWidget *widget,
|
|
GtkWidget *previous_toplevel)
|
|
{
|
|
GtkWidget *toplevel = gtk_widget_get_toplevel (widget);
|
|
|
|
if (GTK_WIDGET_TOPLEVEL (toplevel) && GTK_WIDGET_REALIZED (toplevel))
|
|
gdk_window_register_dnd (toplevel->window);
|
|
}
|
|
|
|
static void
|
|
gtk_drag_dest_site_destroy (gpointer data)
|
|
{
|
|
GtkDragDestSite *site = data;
|
|
|
|
if (site->proxy_window)
|
|
g_object_unref (site->proxy_window);
|
|
|
|
if (site->target_list)
|
|
gtk_target_list_unref (site->target_list);
|
|
|
|
g_free (site);
|
|
}
|
|
|
|
/*
|
|
* Default drag handlers
|
|
*/
|
|
static void
|
|
gtk_drag_dest_leave (GtkWidget *widget,
|
|
GdkDragContext *context,
|
|
guint time)
|
|
{
|
|
GtkDragDestSite *site;
|
|
|
|
site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest");
|
|
g_return_if_fail (site != NULL);
|
|
|
|
if (site->do_proxy)
|
|
{
|
|
GtkDragDestInfo *info = gtk_drag_get_dest_info (context, FALSE);
|
|
|
|
if (info->proxy_source && info->proxy_source->widget == widget && !info->dropped)
|
|
{
|
|
gdk_drag_abort (info->proxy_source->context, time);
|
|
gtk_drag_source_info_destroy (info->proxy_source);
|
|
info->proxy_source = NULL;
|
|
}
|
|
|
|
return;
|
|
}
|
|
else
|
|
{
|
|
if ((site->flags & GTK_DEST_DEFAULT_HIGHLIGHT) && site->have_drag)
|
|
gtk_drag_unhighlight (widget);
|
|
|
|
if (!(site->flags & GTK_DEST_DEFAULT_MOTION) || site->have_drag)
|
|
g_signal_emit_by_name (widget, "drag_leave",
|
|
context, time);
|
|
|
|
site->have_drag = FALSE;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gtk_drag_dest_motion (GtkWidget *widget,
|
|
GdkDragContext *context,
|
|
gint x,
|
|
gint y,
|
|
guint time)
|
|
{
|
|
GtkDragDestSite *site;
|
|
GdkDragAction action = 0;
|
|
gboolean retval;
|
|
|
|
site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest");
|
|
g_return_val_if_fail (site != NULL, FALSE);
|
|
|
|
if (site->do_proxy)
|
|
{
|
|
GdkAtom selection;
|
|
GdkEvent *current_event;
|
|
GdkWindow *dest_window;
|
|
GdkDragProtocol proto;
|
|
|
|
GtkDragDestInfo *info = gtk_drag_get_dest_info (context, FALSE);
|
|
|
|
if (!info->proxy_source || info->proxy_source->widget != widget)
|
|
gtk_drag_proxy_begin (widget, info, time);
|
|
|
|
current_event = gtk_get_current_event ();
|
|
|
|
if (site->proxy_window)
|
|
{
|
|
dest_window = site->proxy_window;
|
|
proto = site->proxy_protocol;
|
|
}
|
|
else
|
|
{
|
|
gdk_drag_find_window_for_screen (info->proxy_source->context,
|
|
NULL,
|
|
gdk_drawable_get_screen (current_event->dnd.window),
|
|
current_event->dnd.x_root,
|
|
current_event->dnd.y_root,
|
|
&dest_window, &proto);
|
|
}
|
|
|
|
gdk_drag_motion (info->proxy_source->context,
|
|
dest_window, proto,
|
|
current_event->dnd.x_root,
|
|
current_event->dnd.y_root,
|
|
context->suggested_action,
|
|
context->actions, time);
|
|
|
|
if (!site->proxy_window && dest_window)
|
|
g_object_unref (dest_window);
|
|
|
|
selection = gdk_drag_get_selection (info->proxy_source->context);
|
|
if (selection &&
|
|
selection != gdk_drag_get_selection (info->context))
|
|
gtk_drag_source_check_selection (info->proxy_source, selection, time);
|
|
|
|
gdk_event_free (current_event);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
if (site->flags & GTK_DEST_DEFAULT_MOTION)
|
|
{
|
|
if (context->suggested_action & site->actions)
|
|
action = context->suggested_action;
|
|
else
|
|
{
|
|
gint i;
|
|
|
|
for (i=0; i<8; i++)
|
|
{
|
|
if ((site->actions & (1 << i)) &&
|
|
(context->actions & (1 << i)))
|
|
{
|
|
action = (1 << i);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (action && gtk_drag_dest_find_target (widget, context, NULL))
|
|
{
|
|
if (!site->have_drag)
|
|
{
|
|
site->have_drag = TRUE;
|
|
if (site->flags & GTK_DEST_DEFAULT_HIGHLIGHT)
|
|
gtk_drag_highlight (widget);
|
|
}
|
|
|
|
gdk_drag_status (context, action, time);
|
|
}
|
|
else
|
|
{
|
|
gdk_drag_status (context, 0, time);
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
g_signal_emit_by_name (widget, "drag_motion",
|
|
context, x, y, time, &retval);
|
|
|
|
return (site->flags & GTK_DEST_DEFAULT_MOTION) ? TRUE : retval;
|
|
}
|
|
|
|
static gboolean
|
|
gtk_drag_dest_drop (GtkWidget *widget,
|
|
GdkDragContext *context,
|
|
gint x,
|
|
gint y,
|
|
guint time)
|
|
{
|
|
GtkDragDestSite *site;
|
|
GtkDragDestInfo *info;
|
|
|
|
site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest");
|
|
g_return_val_if_fail (site != NULL, FALSE);
|
|
|
|
info = gtk_drag_get_dest_info (context, FALSE);
|
|
g_return_val_if_fail (info != NULL, FALSE);
|
|
|
|
info->drop_x = x;
|
|
info->drop_y = y;
|
|
|
|
if (site->do_proxy)
|
|
{
|
|
if (info->proxy_source ||
|
|
(info->context->protocol == GDK_DRAG_PROTO_ROOTWIN))
|
|
{
|
|
gtk_drag_drop (info->proxy_source, time);
|
|
}
|
|
else
|
|
{
|
|
/* We need to synthesize a motion event, wait for a status,
|
|
* and, if we get a good one, do a drop.
|
|
*/
|
|
|
|
GdkEvent *current_event;
|
|
GdkAtom selection;
|
|
GdkWindow *dest_window;
|
|
GdkDragProtocol proto;
|
|
|
|
gtk_drag_proxy_begin (widget, info, time);
|
|
info->proxy_drop_wait = TRUE;
|
|
info->proxy_drop_time = time;
|
|
|
|
current_event = gtk_get_current_event ();
|
|
|
|
if (site->proxy_window)
|
|
{
|
|
dest_window = site->proxy_window;
|
|
proto = site->proxy_protocol;
|
|
}
|
|
else
|
|
{
|
|
gdk_drag_find_window_for_screen (info->proxy_source->context,
|
|
NULL,
|
|
gdk_drawable_get_screen (current_event->dnd.window),
|
|
current_event->dnd.x_root,
|
|
current_event->dnd.y_root,
|
|
&dest_window, &proto);
|
|
}
|
|
|
|
gdk_drag_motion (info->proxy_source->context,
|
|
dest_window, proto,
|
|
current_event->dnd.x_root,
|
|
current_event->dnd.y_root,
|
|
context->suggested_action,
|
|
context->actions, time);
|
|
|
|
if (!site->proxy_window && dest_window)
|
|
g_object_unref (dest_window);
|
|
|
|
selection = gdk_drag_get_selection (info->proxy_source->context);
|
|
if (selection &&
|
|
selection != gdk_drag_get_selection (info->context))
|
|
gtk_drag_source_check_selection (info->proxy_source, selection, time);
|
|
|
|
gdk_event_free (current_event);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
else
|
|
{
|
|
gboolean retval;
|
|
|
|
if (site->flags & GTK_DEST_DEFAULT_DROP)
|
|
{
|
|
GdkAtom target = gtk_drag_dest_find_target (widget, context, NULL);
|
|
|
|
if (target == GDK_NONE)
|
|
{
|
|
gtk_drag_finish (context, FALSE, FALSE, time);
|
|
return TRUE;
|
|
}
|
|
else
|
|
gtk_drag_get_data (widget, context, target, time);
|
|
}
|
|
|
|
g_signal_emit_by_name (widget, "drag_drop",
|
|
context, x, y, time, &retval);
|
|
|
|
return (site->flags & GTK_DEST_DEFAULT_DROP) ? TRUE : retval;
|
|
}
|
|
}
|
|
|
|
/***************
|
|
* Source side *
|
|
***************/
|
|
|
|
/*************************************************************
|
|
* gtk_drag_begin: Start a drag operation
|
|
*
|
|
* arguments:
|
|
* widget: Widget from which drag starts
|
|
* handlers: List of handlers to supply the data for the drag
|
|
* button: Button user used to start drag
|
|
* time: Time of event starting drag
|
|
*
|
|
* results:
|
|
*************************************************************/
|
|
|
|
GdkDragContext *
|
|
gtk_drag_begin (GtkWidget *widget,
|
|
GtkTargetList *target_list,
|
|
GdkDragAction actions,
|
|
gint button,
|
|
GdkEvent *event)
|
|
{
|
|
GtkDragSourceInfo *info;
|
|
GList *targets = NULL;
|
|
GList *tmp_list;
|
|
guint32 time = GDK_CURRENT_TIME;
|
|
GdkDragAction possible_actions, suggested_action;
|
|
GdkDragContext *context;
|
|
GtkWidget *ipc_widget;
|
|
|
|
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
|
|
g_return_val_if_fail (GTK_WIDGET_REALIZED (widget), NULL);
|
|
g_return_val_if_fail (target_list != NULL, NULL);
|
|
|
|
if (event)
|
|
time = gdk_event_get_time (event);
|
|
|
|
tmp_list = g_list_last (target_list->list);
|
|
while (tmp_list)
|
|
{
|
|
GtkTargetPair *pair = tmp_list->data;
|
|
targets = g_list_prepend (targets,
|
|
GINT_TO_POINTER (pair->target));
|
|
tmp_list = tmp_list->prev;
|
|
}
|
|
|
|
ipc_widget = gtk_drag_get_ipc_widget (gtk_widget_get_screen (widget));
|
|
source_widgets = g_slist_prepend (source_widgets, ipc_widget);
|
|
|
|
context = gdk_drag_begin (ipc_widget->window, targets);
|
|
g_list_free (targets);
|
|
|
|
info = gtk_drag_get_source_info (context, TRUE);
|
|
|
|
info->ipc_widget = ipc_widget;
|
|
g_object_set_data (G_OBJECT (info->ipc_widget), "gtk-info", info);
|
|
|
|
info->widget = gtk_widget_ref (widget);
|
|
|
|
info->button = button;
|
|
info->target_list = target_list;
|
|
gtk_target_list_ref (target_list);
|
|
|
|
info->possible_actions = actions;
|
|
|
|
info->cursor = NULL;
|
|
info->status = GTK_DRAG_STATUS_DRAG;
|
|
info->last_event = NULL;
|
|
info->selections = NULL;
|
|
info->icon_window = NULL;
|
|
info->destroy_icon = FALSE;
|
|
|
|
gtk_drag_get_event_actions (event, info->button, actions,
|
|
&suggested_action, &possible_actions);
|
|
|
|
info->cursor = gtk_drag_get_cursor (gtk_widget_get_display (widget), suggested_action);
|
|
|
|
/* Set cur_x, cur_y here so if the "drag_begin" signal shows
|
|
* the drag icon, it will be in the right place
|
|
*/
|
|
if (event && event->type == GDK_MOTION_NOTIFY)
|
|
{
|
|
info->cur_screen = gtk_widget_get_screen (widget);
|
|
info->cur_x = event->motion.x_root;
|
|
info->cur_y = event->motion.y_root;
|
|
}
|
|
else
|
|
{
|
|
gdk_display_get_pointer (gtk_widget_get_display (widget),
|
|
&info->cur_screen, &info->cur_x, &info->cur_y, NULL);
|
|
}
|
|
|
|
g_signal_emit_by_name (widget, "drag_begin",
|
|
info->context);
|
|
|
|
if (event && event->type == GDK_MOTION_NOTIFY)
|
|
gtk_drag_motion_cb (info->ipc_widget, (GdkEventMotion *)event, info);
|
|
|
|
info->start_x = info->cur_x;
|
|
info->start_y = info->cur_y;
|
|
|
|
g_signal_connect (info->ipc_widget, "button_release_event",
|
|
G_CALLBACK (gtk_drag_button_release_cb), info);
|
|
g_signal_connect (info->ipc_widget, "motion_notify_event",
|
|
G_CALLBACK (gtk_drag_motion_cb), info);
|
|
g_signal_connect (info->ipc_widget, "key_press_event",
|
|
G_CALLBACK (gtk_drag_key_cb), info);
|
|
g_signal_connect (info->ipc_widget, "key_release_event",
|
|
G_CALLBACK (gtk_drag_key_cb), info);
|
|
g_signal_connect (info->ipc_widget, "selection_get",
|
|
G_CALLBACK (gtk_drag_selection_get), info);
|
|
|
|
/* We use a GTK grab here to override any grabs that the widget
|
|
* we are dragging from might have held
|
|
*/
|
|
gtk_grab_add (info->ipc_widget);
|
|
if (gdk_pointer_grab (info->ipc_widget->window, FALSE,
|
|
GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK |
|
|
GDK_BUTTON_RELEASE_MASK, NULL,
|
|
info->cursor, time) == 0)
|
|
{
|
|
if (gdk_keyboard_grab (info->ipc_widget->window, FALSE, time) != 0)
|
|
{
|
|
gtk_drag_cancel (info, time);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
info->have_grab = TRUE;
|
|
info->grab_time = time;
|
|
|
|
return info->context;
|
|
}
|
|
|
|
/*************************************************************
|
|
* gtk_drag_source_set:
|
|
* Register a drop site, and possibly add default behaviors.
|
|
* arguments:
|
|
* widget:
|
|
* start_button_mask: Mask of allowed buttons to start drag
|
|
* targets: Table of targets for this source
|
|
* n_targets:
|
|
* actions: Actions allowed for this source
|
|
* results:
|
|
*************************************************************/
|
|
|
|
void
|
|
gtk_drag_source_set (GtkWidget *widget,
|
|
GdkModifierType start_button_mask,
|
|
const GtkTargetEntry *targets,
|
|
gint n_targets,
|
|
GdkDragAction actions)
|
|
{
|
|
GtkDragSourceSite *site;
|
|
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
|
|
site = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
|
|
|
|
gtk_widget_add_events (widget,
|
|
gtk_widget_get_events (widget) |
|
|
GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
|
|
GDK_BUTTON_MOTION_MASK);
|
|
|
|
if (site)
|
|
{
|
|
if (site->target_list)
|
|
gtk_target_list_unref (site->target_list);
|
|
}
|
|
else
|
|
{
|
|
site = g_new0 (GtkDragSourceSite, 1);
|
|
|
|
site->icon_type = GTK_IMAGE_EMPTY;
|
|
|
|
g_signal_connect (widget, "button_press_event",
|
|
G_CALLBACK (gtk_drag_source_event_cb),
|
|
site);
|
|
g_signal_connect (widget, "motion_notify_event",
|
|
G_CALLBACK (gtk_drag_source_event_cb),
|
|
site);
|
|
|
|
g_object_set_data_full (G_OBJECT (widget),
|
|
"gtk-site-data",
|
|
site, gtk_drag_source_site_destroy);
|
|
}
|
|
|
|
site->start_button_mask = start_button_mask;
|
|
|
|
if (targets)
|
|
site->target_list = gtk_target_list_new (targets, n_targets);
|
|
else
|
|
site->target_list = NULL;
|
|
|
|
site->actions = actions;
|
|
|
|
}
|
|
|
|
/*************************************************************
|
|
* gtk_drag_source_unset
|
|
* Unregister this widget as a drag source.
|
|
* arguments:
|
|
* widget:
|
|
* results:
|
|
*************************************************************/
|
|
|
|
void
|
|
gtk_drag_source_unset (GtkWidget *widget)
|
|
{
|
|
GtkDragSourceSite *site;
|
|
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
|
|
site = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
|
|
|
|
if (site)
|
|
{
|
|
g_signal_handlers_disconnect_by_func (widget,
|
|
gtk_drag_source_event_cb,
|
|
site);
|
|
g_signal_handlers_disconnect_by_func (widget,
|
|
gtk_drag_source_event_cb,
|
|
site);
|
|
g_object_set_data (G_OBJECT (widget), "gtk-site-data", NULL);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_drag_source_unset_icon (GtkDragSourceSite *site)
|
|
{
|
|
switch (site->icon_type)
|
|
{
|
|
case GTK_IMAGE_EMPTY:
|
|
break;
|
|
case GTK_IMAGE_PIXMAP:
|
|
if (site->icon_data.pixmap.pixmap)
|
|
g_object_unref (site->icon_data.pixmap.pixmap);
|
|
if (site->icon_mask)
|
|
g_object_unref (site->icon_mask);
|
|
break;
|
|
case GTK_IMAGE_PIXBUF:
|
|
g_object_unref (site->icon_data.pixbuf.pixbuf);
|
|
break;
|
|
case GTK_IMAGE_STOCK:
|
|
g_free (site->icon_data.stock.stock_id);
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
break;
|
|
}
|
|
site->icon_type = GTK_IMAGE_EMPTY;
|
|
|
|
if (site->colormap)
|
|
g_object_unref (site->colormap);
|
|
site->colormap = NULL;
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_source_set_icon:
|
|
* @widget: a #GtkWidget
|
|
* @colormap: the colormap of the icon
|
|
* @pixmap: the image data for the icon
|
|
* @mask: the transparency mask for an image.
|
|
*
|
|
* Sets the icon that will be used for drags from a particular widget
|
|
* from a pixmap/mask. GTK+ retains references for the arguments, and
|
|
* will release them when they are no longer needed.
|
|
* Use gtk_drag_source_set_icon_pixbuf() instead.
|
|
**/
|
|
void
|
|
gtk_drag_source_set_icon (GtkWidget *widget,
|
|
GdkColormap *colormap,
|
|
GdkPixmap *pixmap,
|
|
GdkBitmap *mask)
|
|
{
|
|
GtkDragSourceSite *site;
|
|
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
g_return_if_fail (GDK_IS_COLORMAP (colormap));
|
|
g_return_if_fail (GDK_IS_PIXMAP (pixmap));
|
|
g_return_if_fail (!mask || GDK_IS_PIXMAP (mask));
|
|
|
|
site = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
|
|
g_return_if_fail (site != NULL);
|
|
|
|
g_object_ref (colormap);
|
|
g_object_ref (pixmap);
|
|
if (mask)
|
|
g_object_ref (mask);
|
|
|
|
gtk_drag_source_unset_icon (site);
|
|
|
|
site->icon_type = GTK_IMAGE_PIXMAP;
|
|
|
|
site->icon_data.pixmap.pixmap = pixmap;
|
|
site->icon_mask = mask;
|
|
site->colormap = colormap;
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_source_set_icon_pixbuf:
|
|
* @widget: a #GtkWidget
|
|
* @pixbuf: the #GdkPixbuf for the drag icon
|
|
*
|
|
* Sets the icon that will be used for drags from a particular widget
|
|
* from a #GdkPixbuf. GTK+ retains a reference for @pixbuf and will
|
|
* release it when it is no longer needed.
|
|
**/
|
|
void
|
|
gtk_drag_source_set_icon_pixbuf (GtkWidget *widget,
|
|
GdkPixbuf *pixbuf)
|
|
{
|
|
GtkDragSourceSite *site;
|
|
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
g_return_if_fail (GDK_IS_PIXBUF (pixbuf));
|
|
|
|
site = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
|
|
g_return_if_fail (site != NULL);
|
|
g_object_ref (pixbuf);
|
|
|
|
gtk_drag_source_unset_icon (site);
|
|
|
|
site->icon_type = GTK_IMAGE_PIXBUF;
|
|
site->icon_data.pixbuf.pixbuf = pixbuf;
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_source_set_icon_stock:
|
|
* @widget: a #GtkWidget
|
|
* @stock_id: the ID of the stock icon to use
|
|
*
|
|
* Sets the icon that will be used for drags from a particular source
|
|
* to a stock icon.
|
|
**/
|
|
void
|
|
gtk_drag_source_set_icon_stock (GtkWidget *widget,
|
|
const gchar *stock_id)
|
|
{
|
|
GtkDragSourceSite *site;
|
|
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
g_return_if_fail (stock_id != NULL);
|
|
|
|
site = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
|
|
g_return_if_fail (site != NULL);
|
|
|
|
gtk_drag_source_unset_icon (site);
|
|
|
|
site->icon_type = GTK_IMAGE_STOCK;
|
|
site->icon_data.stock.stock_id = g_strdup (stock_id);
|
|
}
|
|
|
|
static void
|
|
gtk_drag_get_icon (GtkDragSourceInfo *info,
|
|
GtkWidget **icon_window,
|
|
gint *hot_x,
|
|
gint *hot_y)
|
|
{
|
|
if (get_can_change_screen (info->icon_window))
|
|
gtk_window_set_screen (GTK_WINDOW (info->icon_window),
|
|
info->cur_screen);
|
|
|
|
if (gtk_widget_get_screen (info->icon_window) != info->cur_screen)
|
|
{
|
|
if (!info->fallback_icon)
|
|
{
|
|
gint save_hot_x, save_hot_y;
|
|
gboolean save_destroy_icon;
|
|
GtkWidget *save_icon_window;
|
|
|
|
/* HACK to get the appropriate icon
|
|
*/
|
|
save_icon_window = info->icon_window;
|
|
save_hot_x = info->hot_x;
|
|
save_hot_y = info->hot_x;
|
|
save_destroy_icon = info->destroy_icon;
|
|
|
|
info->icon_window = NULL;
|
|
gtk_drag_set_icon_default (info->context);
|
|
info->fallback_icon = info->icon_window;
|
|
|
|
info->icon_window = save_icon_window;
|
|
info->hot_x = save_hot_x;
|
|
info->hot_y = save_hot_y;
|
|
info->destroy_icon = save_destroy_icon;
|
|
}
|
|
|
|
gtk_widget_hide (info->icon_window);
|
|
|
|
*icon_window = info->fallback_icon;
|
|
gtk_window_set_screen (GTK_WINDOW (*icon_window), info->cur_screen);
|
|
|
|
if (!default_icon_pixmap)
|
|
{
|
|
*hot_x = -2;
|
|
*hot_y = -2;
|
|
}
|
|
else
|
|
{
|
|
*hot_x = default_icon_hot_x;
|
|
*hot_y = default_icon_hot_y;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (info->fallback_icon)
|
|
gtk_widget_hide (info->fallback_icon);
|
|
|
|
*icon_window = info->icon_window;
|
|
*hot_x = info->hot_x;
|
|
*hot_y = info->hot_y;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_drag_update_icon (GtkDragSourceInfo *info)
|
|
{
|
|
if (info->icon_window)
|
|
{
|
|
GtkWidget *icon_window;
|
|
gint hot_x, hot_y;
|
|
|
|
gtk_drag_get_icon (info, &icon_window, &hot_x, &hot_y);
|
|
|
|
gtk_window_move (GTK_WINDOW (icon_window),
|
|
info->cur_x - hot_x,
|
|
info->cur_y - hot_y);
|
|
|
|
if (GTK_WIDGET_VISIBLE (icon_window))
|
|
gdk_window_raise (icon_window->window);
|
|
else
|
|
gtk_widget_show (icon_window);
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_drag_set_icon_window (GdkDragContext *context,
|
|
GtkWidget *widget,
|
|
gint hot_x,
|
|
gint hot_y,
|
|
gboolean destroy_on_release)
|
|
{
|
|
GtkDragSourceInfo *info;
|
|
|
|
info = gtk_drag_get_source_info (context, FALSE);
|
|
gtk_drag_remove_icon (info);
|
|
|
|
if (widget)
|
|
gtk_widget_ref (widget);
|
|
|
|
info->icon_window = widget;
|
|
info->hot_x = hot_x;
|
|
info->hot_y = hot_y;
|
|
info->destroy_icon = destroy_on_release;
|
|
|
|
gtk_drag_update_icon (info);
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_set_icon_widget:
|
|
* @context: the context for a drag. (This must be called
|
|
with a context for the source side of a drag)
|
|
* @widget: a toplevel window to use as an icon.
|
|
* @hot_x: the X offset within @widget of the hotspot.
|
|
* @hot_y: the Y offset within @widget of the hotspot.
|
|
*
|
|
* Changes the icon for a widget to a given widget. GTK+
|
|
* will not destroy the icon, so if you don't want
|
|
* it to persist, you should connect to the "drag_end"
|
|
* signal and destroy it yourself.
|
|
**/
|
|
void
|
|
gtk_drag_set_icon_widget (GdkDragContext *context,
|
|
GtkWidget *widget,
|
|
gint hot_x,
|
|
gint hot_y)
|
|
{
|
|
g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
|
|
g_return_if_fail (context->is_source);
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
|
|
gtk_drag_set_icon_window (context, widget, hot_x, hot_y, FALSE);
|
|
}
|
|
|
|
static void
|
|
icon_window_realize (GtkWidget *window,
|
|
GdkPixbuf *pixbuf)
|
|
{
|
|
GdkPixmap *pixmap;
|
|
GdkPixmap *mask;
|
|
|
|
gdk_pixbuf_render_pixmap_and_mask_for_colormap (pixbuf,
|
|
gtk_widget_get_colormap (window),
|
|
&pixmap, &mask, 128);
|
|
|
|
gdk_window_set_back_pixmap (window->window, pixmap, FALSE);
|
|
|
|
if (mask)
|
|
gtk_widget_shape_combine_mask (window, mask, 0, 0);
|
|
|
|
g_object_unref (pixmap);
|
|
|
|
if (mask)
|
|
g_object_unref (mask);
|
|
}
|
|
|
|
static void
|
|
set_icon_stock_pixbuf (GdkDragContext *context,
|
|
const gchar *stock_id,
|
|
GdkPixbuf *pixbuf,
|
|
gint hot_x,
|
|
gint hot_y)
|
|
{
|
|
GtkWidget *window;
|
|
gint width, height;
|
|
GdkScreen *screen;
|
|
|
|
g_return_if_fail (context != NULL);
|
|
g_return_if_fail (pixbuf != NULL || stock_id != NULL);
|
|
g_return_if_fail (pixbuf == NULL || stock_id == NULL);
|
|
|
|
screen = gdk_drawable_get_screen (context->source_window);
|
|
|
|
/* Push a NULL colormap to guard against gtk_widget_push_colormap() */
|
|
gtk_widget_push_colormap (NULL);
|
|
window = gtk_window_new (GTK_WINDOW_POPUP);
|
|
gtk_window_set_screen (GTK_WINDOW (window), screen);
|
|
set_can_change_screen (window, TRUE);
|
|
gtk_widget_pop_colormap ();
|
|
|
|
gtk_widget_set_events (window, GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK);
|
|
gtk_widget_set_app_paintable (GTK_WIDGET (window), TRUE);
|
|
|
|
if (stock_id)
|
|
{
|
|
pixbuf = gtk_widget_render_icon (window, stock_id,
|
|
GTK_ICON_SIZE_DND, NULL);
|
|
|
|
if (!pixbuf)
|
|
{
|
|
g_warning ("Cannot load drag icon from stock_id %s", stock_id);
|
|
gtk_widget_destroy (window);
|
|
return;
|
|
}
|
|
|
|
}
|
|
else
|
|
g_object_ref (pixbuf);
|
|
|
|
width = gdk_pixbuf_get_width (pixbuf);
|
|
height = gdk_pixbuf_get_width (pixbuf);
|
|
|
|
gtk_widget_set_size_request (window,
|
|
gdk_pixbuf_get_width (pixbuf),
|
|
gdk_pixbuf_get_height (pixbuf));
|
|
|
|
g_signal_connect_closure (window, "realize",
|
|
g_cclosure_new (G_CALLBACK (icon_window_realize),
|
|
pixbuf,
|
|
(GClosureNotify)g_object_unref),
|
|
FALSE);
|
|
|
|
gtk_drag_set_icon_window (context, window, hot_x, hot_y, TRUE);
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_set_icon_pixbuf:
|
|
* @context: the context for a drag. (This must be called
|
|
* with a context for the source side of a drag)
|
|
* @pixbuf: the #GdkPixbuf to use as the drag icon.
|
|
* @hot_x: the X offset within @widget of the hotspot.
|
|
* @hot_y: the Y offset within @widget of the hotspot.
|
|
*
|
|
* Sets @pixbuf as the icon for a given drag.
|
|
**/
|
|
void
|
|
gtk_drag_set_icon_pixbuf (GdkDragContext *context,
|
|
GdkPixbuf *pixbuf,
|
|
gint hot_x,
|
|
gint hot_y)
|
|
{
|
|
g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
|
|
g_return_if_fail (context->is_source);
|
|
g_return_if_fail (GDK_IS_PIXBUF (pixbuf));
|
|
|
|
set_icon_stock_pixbuf (context, NULL, pixbuf, hot_x, hot_y);
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_set_icon_stock:
|
|
* @context: the context for a drag. (This must be called
|
|
* with a context for the source side of a drag)
|
|
* @stock_id: the ID of the stock icon to use for the drag.
|
|
* @hot_x: the X offset within the icon of the hotspot.
|
|
* @hot_y: the Y offset within the icon of the hotspot.
|
|
*
|
|
* Sets the the icon for a given drag from a stock ID.
|
|
**/
|
|
void
|
|
gtk_drag_set_icon_stock (GdkDragContext *context,
|
|
const gchar *stock_id,
|
|
gint hot_x,
|
|
gint hot_y)
|
|
{
|
|
g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
|
|
g_return_if_fail (context->is_source);
|
|
g_return_if_fail (stock_id != NULL);
|
|
|
|
set_icon_stock_pixbuf (context, stock_id, NULL, hot_x, hot_y);
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_set_icon_pixmap:
|
|
* @context: the context for a drag. (This must be called
|
|
* with a context for the source side of a drag)
|
|
* @colormap: the colormap of the icon
|
|
* @pixmap: the image data for the icon
|
|
* @mask: the transparency mask for the icon
|
|
* @hot_x: the X offset within @pixmap of the hotspot.
|
|
* @hot_y: the Y offset within @pixmap of the hotspot.
|
|
*
|
|
* Sets @pixmap as the icon for a given drag. GTK+ retains
|
|
* references for the arguments, and will release them when
|
|
* they are no longer needed. In general, gtk_drag_set_icon_pixbuf()
|
|
* will be more convenient to use.
|
|
**/
|
|
void
|
|
gtk_drag_set_icon_pixmap (GdkDragContext *context,
|
|
GdkColormap *colormap,
|
|
GdkPixmap *pixmap,
|
|
GdkBitmap *mask,
|
|
gint hot_x,
|
|
gint hot_y)
|
|
{
|
|
GtkWidget *window;
|
|
GdkScreen *screen;
|
|
gint width, height;
|
|
|
|
g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
|
|
g_return_if_fail (context->is_source);
|
|
g_return_if_fail (GDK_IS_COLORMAP (colormap));
|
|
g_return_if_fail (GDK_IS_PIXMAP (pixmap));
|
|
g_return_if_fail (!mask || GDK_IS_PIXMAP (mask));
|
|
|
|
screen = gdk_colormap_get_screen (colormap);
|
|
|
|
g_return_if_fail (gdk_drawable_get_screen (pixmap) == screen);
|
|
g_return_if_fail (!mask || gdk_drawable_get_screen (mask) == screen);
|
|
|
|
gdk_drawable_get_size (pixmap, &width, &height);
|
|
|
|
gtk_widget_push_colormap (colormap);
|
|
|
|
window = gtk_window_new (GTK_WINDOW_POPUP);
|
|
gtk_window_set_screen (GTK_WINDOW (window), screen);
|
|
set_can_change_screen (window, FALSE);
|
|
gtk_widget_set_events (window, GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK);
|
|
gtk_widget_set_app_paintable (GTK_WIDGET (window), TRUE);
|
|
|
|
gtk_widget_pop_colormap ();
|
|
|
|
gtk_widget_set_size_request (window, width, height);
|
|
gtk_widget_realize (window);
|
|
|
|
gdk_window_set_back_pixmap (window->window, pixmap, FALSE);
|
|
|
|
if (mask)
|
|
gtk_widget_shape_combine_mask (window, mask, 0, 0);
|
|
|
|
gtk_drag_set_icon_window (context, window, hot_x, hot_y, TRUE);
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_set_icon_default:
|
|
* @context: the context for a drag. (This must be called
|
|
with a context for the source side of a drag)
|
|
*
|
|
* Sets the icon for a particular drag to the default
|
|
* icon.
|
|
**/
|
|
void
|
|
gtk_drag_set_icon_default (GdkDragContext *context)
|
|
{
|
|
g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
|
|
g_return_if_fail (context->is_source);
|
|
|
|
if (!default_icon_pixmap)
|
|
gtk_drag_set_icon_stock (context, GTK_STOCK_DND, -2, -2);
|
|
else
|
|
gtk_drag_set_icon_pixmap (context,
|
|
default_icon_colormap,
|
|
default_icon_pixmap,
|
|
default_icon_mask,
|
|
default_icon_hot_x,
|
|
default_icon_hot_y);
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_set_default_icon:
|
|
* @colormap: the colormap of the icon
|
|
* @pixmap: the image data for the icon
|
|
* @mask: the transparency mask for an image.
|
|
* @hot_x: The X offset within @widget of the hotspot.
|
|
* @hot_y: The Y offset within @widget of the hotspot.
|
|
*
|
|
* Changes the default drag icon. GTK+ retains references for the
|
|
* arguments, and will release them when they are no longer needed.
|
|
* This function is obsolete. The default icon should now be changed
|
|
* via the stock system by changing the stock pixbuf for #GTK_STOCK_DND.
|
|
**/
|
|
void
|
|
gtk_drag_set_default_icon (GdkColormap *colormap,
|
|
GdkPixmap *pixmap,
|
|
GdkBitmap *mask,
|
|
gint hot_x,
|
|
gint hot_y)
|
|
{
|
|
g_return_if_fail (GDK_IS_COLORMAP (colormap));
|
|
g_return_if_fail (GDK_IS_PIXMAP (pixmap));
|
|
g_return_if_fail (!mask || GDK_IS_PIXMAP (mask));
|
|
|
|
if (default_icon_colormap)
|
|
g_object_unref (default_icon_colormap);
|
|
if (default_icon_pixmap)
|
|
g_object_unref (default_icon_pixmap);
|
|
if (default_icon_mask)
|
|
g_object_unref (default_icon_mask);
|
|
|
|
default_icon_colormap = colormap;
|
|
g_object_ref (colormap);
|
|
|
|
default_icon_pixmap = pixmap;
|
|
g_object_ref (pixmap);
|
|
|
|
default_icon_mask = mask;
|
|
if (mask)
|
|
g_object_ref (mask);
|
|
|
|
default_icon_hot_x = hot_x;
|
|
default_icon_hot_y = hot_y;
|
|
}
|
|
|
|
|
|
/*************************************************************
|
|
* _gtk_drag_source_handle_event:
|
|
* Called from widget event handling code on Drag events
|
|
* for drag sources.
|
|
*
|
|
* arguments:
|
|
* toplevel: Toplevel widget that received the event
|
|
* event:
|
|
* results:
|
|
*************************************************************/
|
|
|
|
void
|
|
_gtk_drag_source_handle_event (GtkWidget *widget,
|
|
GdkEvent *event)
|
|
{
|
|
GtkDragSourceInfo *info;
|
|
GdkDragContext *context;
|
|
|
|
g_return_if_fail (widget != NULL);
|
|
g_return_if_fail (event != NULL);
|
|
|
|
context = event->dnd.context;
|
|
info = gtk_drag_get_source_info (context, FALSE);
|
|
if (!info)
|
|
return;
|
|
|
|
switch (event->type)
|
|
{
|
|
case GDK_DRAG_STATUS:
|
|
{
|
|
GdkCursor *cursor;
|
|
|
|
if (info->proxy_dest)
|
|
{
|
|
if (!event->dnd.send_event)
|
|
{
|
|
if (info->proxy_dest->proxy_drop_wait)
|
|
{
|
|
gboolean result = context->action != 0;
|
|
|
|
/* Aha - we can finally pass the MOTIF DROP on... */
|
|
gdk_drop_reply (info->proxy_dest->context, result, info->proxy_dest->proxy_drop_time);
|
|
if (result)
|
|
gdk_drag_drop (info->context, info->proxy_dest->proxy_drop_time);
|
|
else
|
|
gtk_drag_finish (info->proxy_dest->context, FALSE, FALSE, info->proxy_dest->proxy_drop_time);
|
|
}
|
|
else
|
|
{
|
|
gdk_drag_status (info->proxy_dest->context,
|
|
event->dnd.context->action,
|
|
event->dnd.time);
|
|
}
|
|
}
|
|
}
|
|
else if (info->have_grab)
|
|
{
|
|
cursor = gtk_drag_get_cursor (gtk_widget_get_display (widget),
|
|
event->dnd.context->action);
|
|
if (info->cursor != cursor)
|
|
{
|
|
gdk_pointer_grab (widget->window, FALSE,
|
|
GDK_POINTER_MOTION_MASK |
|
|
GDK_POINTER_MOTION_HINT_MASK |
|
|
GDK_BUTTON_RELEASE_MASK,
|
|
NULL,
|
|
cursor, info->grab_time);
|
|
info->cursor = cursor;
|
|
}
|
|
|
|
if (info->last_event)
|
|
{
|
|
gtk_drag_update (info,
|
|
info->cur_screen, info->cur_x, info->cur_y,
|
|
info->last_event);
|
|
info->last_event = NULL;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
case GDK_DROP_FINISHED:
|
|
gtk_drag_drop_finished (info, TRUE, event->dnd.time);
|
|
break;
|
|
default:
|
|
g_assert_not_reached ();
|
|
}
|
|
}
|
|
|
|
/*************************************************************
|
|
* gtk_drag_source_check_selection:
|
|
* Check if we've set up handlers/claimed the selection
|
|
* for a given drag. If not, add them.
|
|
* arguments:
|
|
*
|
|
* results:
|
|
*************************************************************/
|
|
|
|
static void
|
|
gtk_drag_source_check_selection (GtkDragSourceInfo *info,
|
|
GdkAtom selection,
|
|
guint32 time)
|
|
{
|
|
GList *tmp_list;
|
|
|
|
tmp_list = info->selections;
|
|
while (tmp_list)
|
|
{
|
|
if (GDK_POINTER_TO_ATOM (tmp_list->data) == selection)
|
|
return;
|
|
tmp_list = tmp_list->next;
|
|
}
|
|
|
|
gtk_selection_owner_set_for_display (gtk_widget_get_display (info->widget),
|
|
info->ipc_widget,
|
|
selection,
|
|
time);
|
|
info->selections = g_list_prepend (info->selections,
|
|
GUINT_TO_POINTER (selection));
|
|
|
|
tmp_list = info->target_list->list;
|
|
while (tmp_list)
|
|
{
|
|
GtkTargetPair *pair = tmp_list->data;
|
|
|
|
gtk_selection_add_target (info->ipc_widget,
|
|
selection,
|
|
pair->target,
|
|
pair->info);
|
|
tmp_list = tmp_list->next;
|
|
}
|
|
|
|
if (info->context->protocol == GDK_DRAG_PROTO_MOTIF)
|
|
{
|
|
gtk_selection_add_target (info->ipc_widget,
|
|
selection,
|
|
gdk_atom_intern ("XmTRANSFER_SUCCESS", FALSE),
|
|
TARGET_MOTIF_SUCCESS);
|
|
gtk_selection_add_target (info->ipc_widget,
|
|
selection,
|
|
gdk_atom_intern ("XmTRANSFER_FAILURE", FALSE),
|
|
TARGET_MOTIF_FAILURE);
|
|
}
|
|
|
|
gtk_selection_add_target (info->ipc_widget,
|
|
selection,
|
|
gdk_atom_intern ("DELETE", FALSE),
|
|
TARGET_DELETE);
|
|
}
|
|
|
|
/*************************************************************
|
|
* gtk_drag_drop_finished:
|
|
* Clean up from the drag, and display snapback, if necessary.
|
|
* arguments:
|
|
* info:
|
|
* success:
|
|
* time:
|
|
* results:
|
|
*************************************************************/
|
|
|
|
static void
|
|
gtk_drag_drop_finished (GtkDragSourceInfo *info,
|
|
gboolean success,
|
|
guint time)
|
|
{
|
|
gtk_drag_source_release_selections (info, time);
|
|
|
|
if (info->proxy_dest)
|
|
{
|
|
/* The time from the event isn't reliable for Xdnd drags */
|
|
gtk_drag_finish (info->proxy_dest->context, success, FALSE,
|
|
info->proxy_dest->proxy_drop_time);
|
|
gtk_drag_source_info_destroy (info);
|
|
}
|
|
else
|
|
{
|
|
if (success)
|
|
{
|
|
gtk_drag_source_info_destroy (info);
|
|
}
|
|
else
|
|
{
|
|
GtkDragAnim *anim = g_new (GtkDragAnim, 1);
|
|
anim->info = info;
|
|
anim->step = 0;
|
|
|
|
anim->n_steps = MAX (info->cur_x - info->start_x,
|
|
info->cur_y - info->start_y) / ANIM_STEP_LENGTH;
|
|
anim->n_steps = CLAMP (anim->n_steps, ANIM_MIN_STEPS, ANIM_MAX_STEPS);
|
|
|
|
info->cur_screen = gtk_widget_get_screen (info->widget);
|
|
gtk_drag_update_icon (info);
|
|
|
|
/* Mark the context as dead, so if the destination decides
|
|
* to respond really late, we still are OK.
|
|
*/
|
|
gtk_drag_clear_source_info (info->context);
|
|
g_timeout_add (ANIM_STEP_TIME, gtk_drag_anim_timeout, anim);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_drag_source_release_selections (GtkDragSourceInfo *info,
|
|
guint32 time)
|
|
{
|
|
GdkDisplay *display = gtk_widget_get_display (info->widget);
|
|
GList *tmp_list = info->selections;
|
|
|
|
while (tmp_list)
|
|
{
|
|
GdkAtom selection = GDK_POINTER_TO_ATOM (tmp_list->data);
|
|
if (gdk_selection_owner_get_for_display (display, selection) == info->ipc_widget->window)
|
|
gtk_selection_owner_set_for_display (display, NULL, selection, time);
|
|
|
|
tmp_list = tmp_list->next;
|
|
}
|
|
|
|
g_list_free (info->selections);
|
|
info->selections = NULL;
|
|
}
|
|
|
|
/*************************************************************
|
|
* gtk_drag_drop:
|
|
* Send a drop event.
|
|
* arguments:
|
|
*
|
|
* results:
|
|
*************************************************************/
|
|
|
|
static void
|
|
gtk_drag_drop (GtkDragSourceInfo *info,
|
|
guint32 time)
|
|
{
|
|
if (info->context->protocol == GDK_DRAG_PROTO_ROOTWIN)
|
|
{
|
|
GtkSelectionData selection_data;
|
|
GList *tmp_list;
|
|
/* GTK+ traditionally has used application/x-rootwin-drop, but the
|
|
* XDND spec specifies x-rootwindow-drop.
|
|
*/
|
|
GdkAtom target1 = gdk_atom_intern ("application/x-rootwindow-drop", FALSE);
|
|
GdkAtom target2 = gdk_atom_intern ("application/x-rootwin-drop", FALSE);
|
|
|
|
tmp_list = info->target_list->list;
|
|
while (tmp_list)
|
|
{
|
|
GtkTargetPair *pair = tmp_list->data;
|
|
|
|
if (pair->target == target1 || pair->target == target2)
|
|
{
|
|
selection_data.selection = GDK_NONE;
|
|
selection_data.target = pair->target;
|
|
selection_data.data = NULL;
|
|
selection_data.length = -1;
|
|
|
|
g_signal_emit_by_name (info->widget, "drag_data_get",
|
|
info->context, &selection_data,
|
|
pair->info,
|
|
time);
|
|
|
|
/* FIXME: Should we check for length >= 0 here? */
|
|
gtk_drag_drop_finished (info, TRUE, time);
|
|
return;
|
|
}
|
|
tmp_list = tmp_list->next;
|
|
}
|
|
gtk_drag_drop_finished (info, FALSE, time);
|
|
}
|
|
else
|
|
{
|
|
if (info->icon_window)
|
|
gtk_widget_hide (info->icon_window);
|
|
|
|
gdk_drag_drop (info->context, time);
|
|
info->drop_timeout = g_timeout_add (DROP_ABORT_TIME,
|
|
gtk_drag_abort_timeout,
|
|
info);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Source side callbacks.
|
|
*/
|
|
|
|
static gint
|
|
gtk_drag_source_event_cb (GtkWidget *widget,
|
|
GdkEvent *event,
|
|
gpointer data)
|
|
{
|
|
GtkDragSourceSite *site;
|
|
gboolean retval = FALSE;
|
|
site = (GtkDragSourceSite *)data;
|
|
|
|
switch (event->type)
|
|
{
|
|
case GDK_BUTTON_PRESS:
|
|
if ((GDK_BUTTON1_MASK << (event->button.button - 1)) & site->start_button_mask)
|
|
{
|
|
site->state |= (GDK_BUTTON1_MASK << (event->button.button - 1));
|
|
site->x = event->button.x;
|
|
site->y = event->button.y;
|
|
}
|
|
break;
|
|
|
|
case GDK_BUTTON_RELEASE:
|
|
if ((GDK_BUTTON1_MASK << (event->button.button - 1)) & site->start_button_mask)
|
|
site->state &= ~(GDK_BUTTON1_MASK << (event->button.button - 1));
|
|
break;
|
|
|
|
case GDK_MOTION_NOTIFY:
|
|
if (site->state & event->motion.state & site->start_button_mask)
|
|
{
|
|
/* FIXME: This is really broken and can leave us
|
|
* with a stuck grab
|
|
*/
|
|
int i;
|
|
for (i=1; i<6; i++)
|
|
{
|
|
if (site->state & event->motion.state &
|
|
GDK_BUTTON1_MASK << (i - 1))
|
|
break;
|
|
}
|
|
|
|
if (gtk_drag_check_threshold (widget, site->x, site->y,
|
|
event->motion.x, event->motion.y))
|
|
{
|
|
GtkDragSourceInfo *info;
|
|
GdkDragContext *context;
|
|
|
|
site->state = 0;
|
|
context = gtk_drag_begin (widget, site->target_list,
|
|
site->actions,
|
|
i, event);
|
|
|
|
info = gtk_drag_get_source_info (context, FALSE);
|
|
|
|
if (!info->icon_window)
|
|
{
|
|
switch (site->icon_type)
|
|
{
|
|
case GTK_IMAGE_EMPTY:
|
|
gtk_drag_set_icon_default (context);
|
|
break;
|
|
case GTK_IMAGE_PIXMAP:
|
|
gtk_drag_set_icon_pixmap (context,
|
|
site->colormap,
|
|
site->icon_data.pixmap.pixmap,
|
|
site->icon_mask,
|
|
-2, -2);
|
|
break;
|
|
case GTK_IMAGE_PIXBUF:
|
|
gtk_drag_set_icon_pixbuf (context,
|
|
site->icon_data.pixbuf.pixbuf,
|
|
-2, -2);
|
|
break;
|
|
case GTK_IMAGE_STOCK:
|
|
gtk_drag_set_icon_stock (context,
|
|
site->icon_data.stock.stock_id,
|
|
-2, -2);
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
break;
|
|
}
|
|
}
|
|
|
|
retval = TRUE;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default: /* hit for 2/3BUTTON_PRESS */
|
|
break;
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
static void
|
|
gtk_drag_source_site_destroy (gpointer data)
|
|
{
|
|
GtkDragSourceSite *site = data;
|
|
|
|
if (site->target_list)
|
|
gtk_target_list_unref (site->target_list);
|
|
|
|
gtk_drag_source_unset_icon (site);
|
|
g_free (site);
|
|
}
|
|
|
|
static void
|
|
gtk_drag_selection_get (GtkWidget *widget,
|
|
GtkSelectionData *selection_data,
|
|
guint sel_info,
|
|
guint32 time,
|
|
gpointer data)
|
|
{
|
|
GtkDragSourceInfo *info = data;
|
|
static GdkAtom null_atom = GDK_NONE;
|
|
guint target_info;
|
|
|
|
if (!null_atom)
|
|
null_atom = gdk_atom_intern ("NULL", FALSE);
|
|
|
|
switch (sel_info)
|
|
{
|
|
case TARGET_DELETE:
|
|
g_signal_emit_by_name (info->widget,
|
|
"drag_data_delete",
|
|
info->context);
|
|
gtk_selection_data_set (selection_data, null_atom, 8, NULL, 0);
|
|
break;
|
|
case TARGET_MOTIF_SUCCESS:
|
|
gtk_drag_drop_finished (info, TRUE, time);
|
|
gtk_selection_data_set (selection_data, null_atom, 8, NULL, 0);
|
|
break;
|
|
case TARGET_MOTIF_FAILURE:
|
|
gtk_drag_drop_finished (info, FALSE, time);
|
|
gtk_selection_data_set (selection_data, null_atom, 8, NULL, 0);
|
|
break;
|
|
default:
|
|
if (info->proxy_dest)
|
|
{
|
|
/* This is sort of dangerous and needs to be thought
|
|
* through better
|
|
*/
|
|
info->proxy_dest->proxy_data = selection_data;
|
|
gtk_drag_get_data (info->widget,
|
|
info->proxy_dest->context,
|
|
selection_data->target,
|
|
time);
|
|
gtk_main ();
|
|
info->proxy_dest->proxy_data = NULL;
|
|
}
|
|
else
|
|
{
|
|
if (gtk_target_list_find (info->target_list,
|
|
selection_data->target,
|
|
&target_info))
|
|
{
|
|
g_signal_emit_by_name (info->widget, "drag_data_get",
|
|
info->context,
|
|
selection_data,
|
|
target_info,
|
|
time);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
static gint
|
|
gtk_drag_anim_timeout (gpointer data)
|
|
{
|
|
GtkDragAnim *anim = data;
|
|
gint x, y;
|
|
gboolean retval;
|
|
|
|
GDK_THREADS_ENTER ();
|
|
|
|
if (anim->step == anim->n_steps)
|
|
{
|
|
gtk_drag_source_info_destroy (anim->info);
|
|
g_free (anim);
|
|
|
|
retval = FALSE;
|
|
}
|
|
else
|
|
{
|
|
x = (anim->info->start_x * (anim->step + 1) +
|
|
anim->info->cur_x * (anim->n_steps - anim->step - 1)) / anim->n_steps;
|
|
y = (anim->info->start_y * (anim->step + 1) +
|
|
anim->info->cur_y * (anim->n_steps - anim->step - 1)) / anim->n_steps;
|
|
if (anim->info->icon_window)
|
|
{
|
|
GtkWidget *icon_window;
|
|
gint hot_x, hot_y;
|
|
|
|
gtk_drag_get_icon (anim->info, &icon_window, &hot_x, &hot_y);
|
|
|
|
gtk_window_move (GTK_WINDOW (icon_window),
|
|
x - hot_x,
|
|
y - hot_y);
|
|
}
|
|
|
|
anim->step++;
|
|
|
|
retval = TRUE;
|
|
}
|
|
|
|
GDK_THREADS_LEAVE ();
|
|
|
|
return retval;
|
|
}
|
|
|
|
static void
|
|
gtk_drag_remove_icon (GtkDragSourceInfo *info)
|
|
{
|
|
if (info->icon_window)
|
|
{
|
|
gtk_widget_hide (info->icon_window);
|
|
if (info->destroy_icon)
|
|
gtk_widget_destroy (info->icon_window);
|
|
|
|
if (info->fallback_icon)
|
|
{
|
|
gtk_widget_destroy (info->fallback_icon);
|
|
info->fallback_icon = NULL;
|
|
}
|
|
|
|
g_object_unref (info->icon_window);
|
|
info->icon_window = NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gtk_drag_source_info_destroy (GtkDragSourceInfo *info)
|
|
{
|
|
gtk_drag_remove_icon (info);
|
|
|
|
if (!info->proxy_dest)
|
|
g_signal_emit_by_name (info->widget, "drag_end",
|
|
info->context);
|
|
|
|
if (info->widget)
|
|
g_object_unref (info->widget);
|
|
|
|
|
|
g_signal_handlers_disconnect_by_func (info->ipc_widget,
|
|
gtk_drag_button_release_cb,
|
|
info);
|
|
g_signal_handlers_disconnect_by_func (info->ipc_widget,
|
|
gtk_drag_motion_cb,
|
|
info);
|
|
g_signal_handlers_disconnect_by_func (info->ipc_widget,
|
|
gtk_drag_key_cb,
|
|
info);
|
|
g_signal_handlers_disconnect_by_func (info->ipc_widget,
|
|
gtk_drag_selection_get,
|
|
info);
|
|
|
|
gtk_selection_remove_all (info->ipc_widget);
|
|
g_object_set_data (G_OBJECT (info->ipc_widget), "gtk-info", NULL);
|
|
source_widgets = g_slist_remove (source_widgets, info->ipc_widget);
|
|
gtk_drag_release_ipc_widget (info->ipc_widget);
|
|
|
|
gtk_target_list_unref (info->target_list);
|
|
|
|
gtk_drag_clear_source_info (info->context);
|
|
g_object_unref (info->context);
|
|
|
|
if (info->drop_timeout)
|
|
g_source_remove (info->drop_timeout);
|
|
|
|
g_free (info);
|
|
}
|
|
|
|
/*************************************************************
|
|
* gtk_drag_update:
|
|
* Function to update the status of the drag when the
|
|
* cursor moves or the modifier changes
|
|
* arguments:
|
|
* info: DragSourceInfo for the drag
|
|
* x_root, y_root: position of darg
|
|
* event: The event that triggered this call
|
|
* results:
|
|
*************************************************************/
|
|
|
|
static void
|
|
gtk_drag_update (GtkDragSourceInfo *info,
|
|
GdkScreen *screen,
|
|
gint x_root,
|
|
gint y_root,
|
|
GdkEvent *event)
|
|
{
|
|
GdkDragAction action;
|
|
GdkDragAction possible_actions;
|
|
GdkWindow *dest_window;
|
|
GdkDragProtocol protocol;
|
|
GdkAtom selection;
|
|
guint32 time = gtk_drag_get_event_time (event);
|
|
|
|
gtk_drag_get_event_actions (event,
|
|
info->button,
|
|
info->possible_actions,
|
|
&action, &possible_actions);
|
|
info->cur_screen = screen;
|
|
info->cur_x = x_root;
|
|
info->cur_y = y_root;
|
|
|
|
gtk_drag_update_icon (info);
|
|
gdk_drag_find_window_for_screen (info->context,
|
|
info->icon_window ? info->icon_window->window : NULL,
|
|
screen, x_root, y_root,
|
|
&dest_window, &protocol);
|
|
|
|
if (gdk_drag_motion (info->context, dest_window, protocol,
|
|
x_root, y_root, action,
|
|
possible_actions,
|
|
time))
|
|
{
|
|
if (info->last_event != event) /* Paranoia, should not happen */
|
|
{
|
|
if (info->last_event)
|
|
gdk_event_free ((GdkEvent *)info->last_event);
|
|
info->last_event = gdk_event_copy ((GdkEvent *)event);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (info->last_event)
|
|
{
|
|
gdk_event_free ((GdkEvent *)info->last_event);
|
|
info->last_event = NULL;
|
|
}
|
|
}
|
|
|
|
if (dest_window)
|
|
g_object_unref (dest_window);
|
|
|
|
selection = gdk_drag_get_selection (info->context);
|
|
if (selection)
|
|
gtk_drag_source_check_selection (info, selection, time);
|
|
}
|
|
|
|
/*************************************************************
|
|
* gtk_drag_end:
|
|
* Called when the user finishes to drag, either by
|
|
* releasing the mouse, or by pressing Esc.
|
|
* arguments:
|
|
* info: Source info for the drag
|
|
* time: Timestamp for ending the drag
|
|
* results:
|
|
*************************************************************/
|
|
|
|
static void
|
|
gtk_drag_end (GtkDragSourceInfo *info, guint32 time)
|
|
{
|
|
GdkEvent *send_event;
|
|
GtkWidget *source_widget = info->widget;
|
|
GdkDisplay *display = gtk_widget_get_display (source_widget);
|
|
|
|
info->have_grab = FALSE;
|
|
|
|
gdk_display_pointer_ungrab (display, time);
|
|
gdk_display_keyboard_ungrab (display, time);
|
|
gtk_grab_remove (info->ipc_widget);
|
|
|
|
g_signal_handlers_disconnect_by_func (info->ipc_widget,
|
|
gtk_drag_button_release_cb,
|
|
info);
|
|
g_signal_handlers_disconnect_by_func (info->ipc_widget,
|
|
gtk_drag_motion_cb,
|
|
info);
|
|
g_signal_handlers_disconnect_by_func (info->ipc_widget,
|
|
gtk_drag_key_cb,
|
|
info);
|
|
|
|
/* Send on a release pair to the the original
|
|
* widget to convince it to release its grab. We need to
|
|
* call gtk_propagate_event() here, instead of
|
|
* gtk_widget_event() because widget like GtkList may
|
|
* expect propagation.
|
|
*/
|
|
|
|
send_event = gdk_event_new (GDK_BUTTON_RELEASE);
|
|
send_event->button.window = g_object_ref (gtk_widget_get_root_window (source_widget));
|
|
send_event->button.send_event = TRUE;
|
|
send_event->button.time = time;
|
|
send_event->button.x = 0;
|
|
send_event->button.y = 0;
|
|
send_event->button.axes = NULL;
|
|
send_event->button.state = 0;
|
|
send_event->button.button = info->button;
|
|
send_event->button.device = gdk_display_get_core_pointer (display);
|
|
send_event->button.x_root = 0;
|
|
send_event->button.y_root = 0;
|
|
|
|
gtk_propagate_event (source_widget, send_event);
|
|
gdk_event_free (send_event);
|
|
}
|
|
|
|
/*************************************************************
|
|
* gtk_drag_cancel:
|
|
* Called on cancellation of a drag, either by the user
|
|
* or programmatically.
|
|
* arguments:
|
|
* info: Source info for the drag
|
|
* time: Timestamp for ending the drag
|
|
* results:
|
|
*************************************************************/
|
|
|
|
static void
|
|
gtk_drag_cancel (GtkDragSourceInfo *info, guint32 time)
|
|
{
|
|
gtk_drag_end (info, time);
|
|
gdk_drag_abort (info->context, time);
|
|
gtk_drag_drop_finished (info, FALSE, time);
|
|
}
|
|
|
|
/*************************************************************
|
|
* gtk_drag_motion_cb:
|
|
* "motion_notify_event" callback during drag.
|
|
* arguments:
|
|
*
|
|
* results:
|
|
*************************************************************/
|
|
|
|
static gint
|
|
gtk_drag_motion_cb (GtkWidget *widget,
|
|
GdkEventMotion *event,
|
|
gpointer data)
|
|
{
|
|
GtkDragSourceInfo *info = (GtkDragSourceInfo *)data;
|
|
GdkScreen *screen;
|
|
gint x_root, y_root;
|
|
|
|
if (event->is_hint)
|
|
{
|
|
GdkDisplay *display = gtk_widget_get_display (widget);
|
|
|
|
gdk_display_get_pointer (display, &screen, &x_root, &y_root, NULL);
|
|
event->x_root = x_root;
|
|
event->y_root = y_root;
|
|
}
|
|
else
|
|
screen = gdk_event_get_screen ((GdkEvent *)event);
|
|
|
|
gtk_drag_update (info, screen, event->x_root, event->y_root, (GdkEvent *)event);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*************************************************************
|
|
* gtk_drag_key_cb:
|
|
* "key_press/release_event" callback during drag.
|
|
* arguments:
|
|
*
|
|
* results:
|
|
*************************************************************/
|
|
|
|
static gint
|
|
gtk_drag_key_cb (GtkWidget *widget,
|
|
GdkEventKey *event,
|
|
gpointer data)
|
|
{
|
|
GtkDragSourceInfo *info = (GtkDragSourceInfo *)data;
|
|
GdkModifierType state;
|
|
GdkWindow *root_window;
|
|
|
|
if (event->type == GDK_KEY_PRESS)
|
|
{
|
|
if (event->keyval == GDK_Escape)
|
|
{
|
|
gtk_drag_cancel (info, event->time);
|
|
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
/* Now send a "motion" so that the modifier state is updated */
|
|
|
|
/* The state is not yet updated in the event, so we need
|
|
* to query it here. We could use XGetModifierMapping, but
|
|
* that would be overkill.
|
|
*/
|
|
root_window = gtk_widget_get_root_window (widget);
|
|
gdk_window_get_pointer (root_window, NULL, NULL, &state);
|
|
|
|
event->state = state;
|
|
gtk_drag_update (info, info->cur_screen, info->cur_x, info->cur_y, (GdkEvent *)event);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*************************************************************
|
|
* gtk_drag_button_release_cb:
|
|
* "button_release_event" callback during drag.
|
|
* arguments:
|
|
*
|
|
* results:
|
|
*************************************************************/
|
|
|
|
static gint
|
|
gtk_drag_button_release_cb (GtkWidget *widget,
|
|
GdkEventButton *event,
|
|
gpointer data)
|
|
{
|
|
GtkDragSourceInfo *info = (GtkDragSourceInfo *)data;
|
|
|
|
if (event->button != info->button)
|
|
return FALSE;
|
|
|
|
if ((info->context->action != 0) && (info->context->dest_window != NULL))
|
|
{
|
|
gtk_drag_end (info, event->time);
|
|
gtk_drag_drop (info, event->time);
|
|
}
|
|
else
|
|
{
|
|
gtk_drag_cancel (info, event->time);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gint
|
|
gtk_drag_abort_timeout (gpointer data)
|
|
{
|
|
GtkDragSourceInfo *info = data;
|
|
guint32 time = GDK_CURRENT_TIME;
|
|
|
|
GDK_THREADS_ENTER ();
|
|
|
|
if (info->proxy_dest)
|
|
time = info->proxy_dest->proxy_drop_time;
|
|
|
|
info->drop_timeout = 0;
|
|
gtk_drag_drop_finished (info, FALSE, time);
|
|
|
|
GDK_THREADS_LEAVE ();
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_check_threshold:
|
|
* @widget: a #GtkWidget
|
|
* @start_x: X coordinate of start of drag
|
|
* @start_y: Y coordinate of start of drag
|
|
* @current_x: current X coordinate
|
|
* @current_y: current Y coordinate
|
|
*
|
|
* Checks to see if a mouse drag starting at (@start_x, @start_y) and ending
|
|
* at (@current_x, @current_y) has passed the GTK+ drag threshhold, and thus
|
|
* should trigger the beginning of a drag-and-drop operation.
|
|
*
|
|
* Return Value: %TRUE if the drag threshold has been passed.
|
|
**/
|
|
gboolean
|
|
gtk_drag_check_threshold (GtkWidget *widget,
|
|
gint start_x,
|
|
gint start_y,
|
|
gint current_x,
|
|
gint current_y)
|
|
{
|
|
gint drag_threshold;
|
|
|
|
g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
|
|
|
|
g_object_get (gtk_widget_get_settings (widget),
|
|
"gtk-dnd-drag-threshold", &drag_threshold,
|
|
NULL);
|
|
|
|
return (ABS (current_x - start_x) > drag_threshold ||
|
|
ABS (current_y - start_y) > drag_threshold);
|
|
}
|