forked from AuroraMiddleware/gtk
4539 lines
125 KiB
C
4539 lines
125 KiB
C
/* GTK - The GIMP Toolkit
|
|
* Copyright (C) 1995-1999 Peter Mattis, Spencer Kimball and Josh MacDonald
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
/*
|
|
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
|
|
* file for a list of people on the GTK+ Team. See the ChangeLog
|
|
* files for a list of changes. These files are distributed with
|
|
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <math.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#include "gdkconfig.h"
|
|
|
|
#include "gdk/gdkkeysyms.h"
|
|
|
|
#ifdef GDK_WINDOWING_X11
|
|
#include <X11/Xlib.h>
|
|
#include <X11/keysym.h>
|
|
#include "gdk/x11/gdkx.h"
|
|
#endif
|
|
|
|
#include "gtkdnd.h"
|
|
#include "gtkiconfactory.h"
|
|
#include "gtkicontheme.h"
|
|
#include "gtkimage.h"
|
|
#include "gtkinvisible.h"
|
|
#include "gtkmain.h"
|
|
#include "gtkplug.h"
|
|
#include "gtkstock.h"
|
|
#include "gtktooltip.h"
|
|
#include "gtkwindow.h"
|
|
#include "gtkintl.h"
|
|
#include "gtkdndcursors.h"
|
|
|
|
static GSList *source_widgets = NULL;
|
|
|
|
typedef struct _GtkDragSourceSite GtkDragSourceSite;
|
|
typedef struct _GtkDragSourceInfo GtkDragSourceInfo;
|
|
typedef struct _GtkDragDestSite GtkDragDestSite;
|
|
typedef struct _GtkDragDestInfo GtkDragDestInfo;
|
|
typedef struct _GtkDragAnim GtkDragAnim;
|
|
|
|
|
|
typedef enum
|
|
{
|
|
GTK_DRAG_STATUS_DRAG,
|
|
GTK_DRAG_STATUS_WAIT,
|
|
GTK_DRAG_STATUS_DROP
|
|
} GtkDragStatus;
|
|
|
|
struct _GtkDragSourceSite
|
|
{
|
|
GdkModifierType start_button_mask;
|
|
GtkTargetList *target_list; /* Targets for drag data */
|
|
GdkDragAction actions; /* Possible actions */
|
|
|
|
/* Drag icon */
|
|
GtkImageType icon_type;
|
|
union
|
|
{
|
|
GtkImagePixmapData pixmap;
|
|
GtkImagePixbufData pixbuf;
|
|
GtkImageStockData stock;
|
|
GtkImageIconNameData name;
|
|
} icon_data;
|
|
GdkBitmap *icon_mask;
|
|
|
|
GdkColormap *colormap; /* Colormap for drag icon */
|
|
|
|
/* Stored button press information to detect drag beginning */
|
|
gint state;
|
|
gint x, y;
|
|
};
|
|
|
|
struct _GtkDragSourceInfo
|
|
{
|
|
GtkWidget *widget;
|
|
GtkTargetList *target_list; /* Targets for drag data */
|
|
GdkDragAction possible_actions; /* Actions allowed by source */
|
|
GdkDragContext *context; /* drag context */
|
|
GtkWidget *icon_window; /* Window for drag */
|
|
GtkWidget *fallback_icon; /* Window for drag used on other screens */
|
|
GtkWidget *ipc_widget; /* GtkInvisible for grab, message passing */
|
|
GdkCursor *cursor; /* Cursor for drag */
|
|
gint hot_x, hot_y; /* Hot spot for drag */
|
|
gint button; /* mouse button starting drag */
|
|
|
|
GtkDragStatus status; /* drag status */
|
|
GdkEvent *last_event; /* pending event */
|
|
|
|
gint start_x, start_y; /* Initial position */
|
|
gint cur_x, cur_y; /* Current Position */
|
|
GdkScreen *cur_screen; /* Current screen for pointer */
|
|
|
|
guint32 grab_time; /* timestamp for initial grab */
|
|
GList *selections; /* selections we've claimed */
|
|
|
|
GtkDragDestInfo *proxy_dest; /* Set if this is a proxy drag */
|
|
|
|
guint update_idle; /* Idle function to update the drag */
|
|
guint drop_timeout; /* Timeout for aborting drop */
|
|
guint destroy_icon : 1; /* If true, destroy icon_window */
|
|
guint have_grab : 1; /* Do we still have the pointer grab */
|
|
GdkPixbuf *icon_pixbuf;
|
|
GdkCursor *drag_cursors[6];
|
|
};
|
|
|
|
struct _GtkDragDestSite
|
|
{
|
|
GtkDestDefaults flags;
|
|
GtkTargetList *target_list;
|
|
GdkDragAction actions;
|
|
GdkWindow *proxy_window;
|
|
GdkDragProtocol proxy_protocol;
|
|
guint do_proxy : 1;
|
|
guint proxy_coords : 1;
|
|
guint have_drag : 1;
|
|
guint track_motion : 1;
|
|
};
|
|
|
|
struct _GtkDragDestInfo
|
|
{
|
|
GtkWidget *widget; /* Widget in which drag is in */
|
|
GdkDragContext *context; /* Drag context */
|
|
GtkDragSourceInfo *proxy_source; /* Set if this is a proxy drag */
|
|
GtkSelectionData *proxy_data; /* Set while retrieving proxied data */
|
|
guint32 proxy_drop_time; /* Timestamp for proxied drop */
|
|
guint proxy_drop_wait : 1; /* Set if we are waiting for a
|
|
* status reply before sending
|
|
* a proxied drop on.
|
|
*/
|
|
guint dropped : 1; /* Set after we receive a drop */
|
|
gint drop_x, drop_y; /* Position of drop */
|
|
};
|
|
|
|
#define DROP_ABORT_TIME 300000
|
|
|
|
#define ANIM_STEP_TIME 50
|
|
#define ANIM_STEP_LENGTH 50
|
|
#define ANIM_MIN_STEPS 5
|
|
#define ANIM_MAX_STEPS 10
|
|
|
|
struct _GtkDragAnim
|
|
{
|
|
GtkDragSourceInfo *info;
|
|
gint step;
|
|
gint n_steps;
|
|
};
|
|
|
|
typedef gboolean (* GtkDragDestCallback) (GtkWidget *widget,
|
|
GdkDragContext *context,
|
|
gint x,
|
|
gint y,
|
|
guint32 time);
|
|
|
|
/* Enumeration for some targets we handle internally */
|
|
|
|
enum {
|
|
TARGET_MOTIF_SUCCESS = 0x40000000,
|
|
TARGET_MOTIF_FAILURE,
|
|
TARGET_DELETE
|
|
};
|
|
|
|
/* Forward declarations */
|
|
static void gtk_drag_get_event_actions (GdkEvent *event,
|
|
gint button,
|
|
GdkDragAction actions,
|
|
GdkDragAction *suggested_action,
|
|
GdkDragAction *possible_actions);
|
|
static GdkCursor * gtk_drag_get_cursor (GdkDisplay *display,
|
|
GdkDragAction action,
|
|
GtkDragSourceInfo *info);
|
|
static void gtk_drag_update_cursor (GtkDragSourceInfo *info);
|
|
static GtkWidget *gtk_drag_get_ipc_widget (GtkWidget *widget);
|
|
static GtkWidget *gtk_drag_get_ipc_widget_for_screen (GdkScreen *screen);
|
|
static void gtk_drag_release_ipc_widget (GtkWidget *widget);
|
|
|
|
static gboolean gtk_drag_highlight_expose (GtkWidget *widget,
|
|
GdkEventExpose *event,
|
|
gpointer data);
|
|
|
|
static void gtk_drag_selection_received (GtkWidget *widget,
|
|
GtkSelectionData *selection_data,
|
|
guint time,
|
|
gpointer data);
|
|
static gboolean gtk_drag_find_widget (GtkWidget *widget,
|
|
GdkDragContext *context,
|
|
GtkDragDestInfo *info,
|
|
gint x,
|
|
gint y,
|
|
guint32 time,
|
|
GtkDragDestCallback callback);
|
|
static void gtk_drag_proxy_begin (GtkWidget *widget,
|
|
GtkDragDestInfo *dest_info,
|
|
guint32 time);
|
|
static void gtk_drag_dest_realized (GtkWidget *widget);
|
|
static void gtk_drag_dest_hierarchy_changed (GtkWidget *widget,
|
|
GtkWidget *previous_toplevel);
|
|
static void gtk_drag_dest_site_destroy (gpointer data);
|
|
static void gtk_drag_dest_leave (GtkWidget *widget,
|
|
GdkDragContext *context,
|
|
guint time);
|
|
static gboolean gtk_drag_dest_motion (GtkWidget *widget,
|
|
GdkDragContext *context,
|
|
gint x,
|
|
gint y,
|
|
guint time);
|
|
static gboolean gtk_drag_dest_drop (GtkWidget *widget,
|
|
GdkDragContext *context,
|
|
gint x,
|
|
gint y,
|
|
guint time);
|
|
|
|
static GtkDragDestInfo * gtk_drag_get_dest_info (GdkDragContext *context,
|
|
gboolean create);
|
|
static GtkDragSourceInfo *gtk_drag_get_source_info (GdkDragContext *context,
|
|
gboolean create);
|
|
static void gtk_drag_clear_source_info (GdkDragContext *context);
|
|
|
|
static void gtk_drag_source_check_selection (GtkDragSourceInfo *info,
|
|
GdkAtom selection,
|
|
guint32 time);
|
|
static void gtk_drag_source_release_selections (GtkDragSourceInfo *info,
|
|
guint32 time);
|
|
static void gtk_drag_drop (GtkDragSourceInfo *info,
|
|
guint32 time);
|
|
static void gtk_drag_drop_finished (GtkDragSourceInfo *info,
|
|
GtkDragResult result,
|
|
guint time);
|
|
static void gtk_drag_cancel (GtkDragSourceInfo *info,
|
|
GtkDragResult result,
|
|
guint32 time);
|
|
|
|
static gboolean gtk_drag_source_event_cb (GtkWidget *widget,
|
|
GdkEvent *event,
|
|
gpointer data);
|
|
static void gtk_drag_source_site_destroy (gpointer data);
|
|
static void gtk_drag_selection_get (GtkWidget *widget,
|
|
GtkSelectionData *selection_data,
|
|
guint sel_info,
|
|
guint32 time,
|
|
gpointer data);
|
|
static gboolean gtk_drag_anim_timeout (gpointer data);
|
|
static void gtk_drag_remove_icon (GtkDragSourceInfo *info);
|
|
static void gtk_drag_source_info_destroy (GtkDragSourceInfo *info);
|
|
static void gtk_drag_add_update_idle (GtkDragSourceInfo *info);
|
|
|
|
static void gtk_drag_update (GtkDragSourceInfo *info,
|
|
GdkScreen *screen,
|
|
gint x_root,
|
|
gint y_root,
|
|
GdkEvent *event);
|
|
static gboolean gtk_drag_motion_cb (GtkWidget *widget,
|
|
GdkEventMotion *event,
|
|
gpointer data);
|
|
static gboolean gtk_drag_key_cb (GtkWidget *widget,
|
|
GdkEventKey *event,
|
|
gpointer data);
|
|
static gboolean gtk_drag_grab_broken_event_cb (GtkWidget *widget,
|
|
GdkEventGrabBroken *event,
|
|
gpointer data);
|
|
static void gtk_drag_grab_notify_cb (GtkWidget *widget,
|
|
gboolean was_grabbed,
|
|
gpointer data);
|
|
static gboolean gtk_drag_button_release_cb (GtkWidget *widget,
|
|
GdkEventButton *event,
|
|
gpointer data);
|
|
static gboolean gtk_drag_abort_timeout (gpointer data);
|
|
|
|
static void set_icon_stock_pixbuf (GdkDragContext *context,
|
|
const gchar *stock_id,
|
|
GdkPixbuf *pixbuf,
|
|
gint hot_x,
|
|
gint hot_y,
|
|
gboolean force_window);
|
|
|
|
/************************
|
|
* Cursor and Icon data *
|
|
************************/
|
|
|
|
static struct {
|
|
GdkDragAction action;
|
|
const gchar *name;
|
|
const guint8 *data;
|
|
GdkPixbuf *pixbuf;
|
|
GdkCursor *cursor;
|
|
} drag_cursors[] = {
|
|
{ GDK_ACTION_DEFAULT, NULL },
|
|
{ GDK_ACTION_ASK, "dnd-ask", dnd_cursor_ask, NULL, NULL },
|
|
{ GDK_ACTION_COPY, "dnd-copy", dnd_cursor_copy, NULL, NULL },
|
|
{ GDK_ACTION_MOVE, "dnd-move", dnd_cursor_move, NULL, NULL },
|
|
{ GDK_ACTION_LINK, "dnd-link", dnd_cursor_link, NULL, NULL },
|
|
{ 0 , "dnd-none", dnd_cursor_none, NULL, NULL },
|
|
};
|
|
|
|
static const gint n_drag_cursors = sizeof (drag_cursors) / sizeof (drag_cursors[0]);
|
|
|
|
/*********************
|
|
* Utility functions *
|
|
*********************/
|
|
|
|
static void
|
|
set_can_change_screen (GtkWidget *widget,
|
|
gboolean can_change_screen)
|
|
{
|
|
can_change_screen = can_change_screen != FALSE;
|
|
|
|
g_object_set_data (G_OBJECT (widget), I_("gtk-dnd-can-change-screen"),
|
|
GUINT_TO_POINTER (can_change_screen));
|
|
}
|
|
|
|
static gboolean
|
|
get_can_change_screen (GtkWidget *widget)
|
|
{
|
|
return g_object_get_data (G_OBJECT (widget), "gtk-dnd-can-change-screen") != NULL;
|
|
|
|
}
|
|
|
|
static GtkWidget *
|
|
gtk_drag_get_ipc_widget_for_screen (GdkScreen *screen)
|
|
{
|
|
GtkWidget *result;
|
|
GSList *drag_widgets = g_object_get_data (G_OBJECT (screen),
|
|
"gtk-dnd-ipc-widgets");
|
|
|
|
if (drag_widgets)
|
|
{
|
|
GSList *tmp = drag_widgets;
|
|
result = drag_widgets->data;
|
|
drag_widgets = drag_widgets->next;
|
|
g_object_set_data (G_OBJECT (screen),
|
|
I_("gtk-dnd-ipc-widgets"),
|
|
drag_widgets);
|
|
g_slist_free_1 (tmp);
|
|
}
|
|
else
|
|
{
|
|
result = gtk_window_new (GTK_WINDOW_POPUP);
|
|
gtk_window_set_screen (GTK_WINDOW (result), screen);
|
|
gtk_window_resize (GTK_WINDOW (result), 1, 1);
|
|
gtk_window_move (GTK_WINDOW (result), -100, -100);
|
|
gtk_widget_show (result);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static GtkWidget *
|
|
gtk_drag_get_ipc_widget (GtkWidget *widget)
|
|
{
|
|
GtkWidget *result;
|
|
GtkWidget *toplevel;
|
|
|
|
result = gtk_drag_get_ipc_widget_for_screen (gtk_widget_get_screen (widget));
|
|
|
|
toplevel = gtk_widget_get_toplevel (widget);
|
|
|
|
if (GTK_IS_WINDOW (toplevel))
|
|
{
|
|
if (gtk_window_has_group (GTK_WINDOW (toplevel)))
|
|
gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
|
|
GTK_WINDOW (result));
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* FIXME: modifying the XEvent window as in root_key_filter() isn't
|
|
* going to work with XGE/XI2, since the actual event to handle would
|
|
* be allocated/freed before GDK gets to translate the event.
|
|
* Active grabs on the keyboard are used instead at the moment...
|
|
*/
|
|
#if defined (GDK_WINDOWING_X11) && !defined (XINPUT_2)
|
|
|
|
/*
|
|
* We want to handle a handful of keys during DND, e.g. Escape to abort.
|
|
* Grabbing the keyboard has the unfortunate side-effect of preventing
|
|
* useful things such as using Alt-Tab to cycle between windows or
|
|
* switching workspaces. Therefore, we just grab the few keys we are
|
|
* interested in. Note that we need to put the grabs on the root window
|
|
* in order for them to still work when the focus is moved to another
|
|
* app/workspace.
|
|
*
|
|
* GDK needs a little help to successfully deliver root key events...
|
|
*/
|
|
|
|
static GdkFilterReturn
|
|
root_key_filter (GdkXEvent *xevent,
|
|
GdkEvent *event,
|
|
gpointer data)
|
|
{
|
|
XEvent *ev = (XEvent *) xevent;
|
|
|
|
if ((ev->type == KeyPress || ev->type == KeyRelease) &&
|
|
ev->xkey.root == ev->xkey.window)
|
|
ev->xkey.window = (Window)data;
|
|
|
|
return GDK_FILTER_CONTINUE;
|
|
}
|
|
|
|
typedef struct {
|
|
gint keysym;
|
|
gint modifiers;
|
|
} GrabKey;
|
|
|
|
static GrabKey grab_keys[] = {
|
|
{ XK_Escape, 0 },
|
|
{ XK_space, 0 },
|
|
{ XK_KP_Space, 0 },
|
|
{ XK_Return, 0 },
|
|
{ XK_KP_Enter, 0 },
|
|
{ XK_Up, 0 },
|
|
{ XK_Up, Mod1Mask },
|
|
{ XK_Down, 0 },
|
|
{ XK_Down, Mod1Mask },
|
|
{ XK_Left, 0 },
|
|
{ XK_Left, Mod1Mask },
|
|
{ XK_Right, 0 },
|
|
{ XK_Right, Mod1Mask },
|
|
{ XK_KP_Up, 0 },
|
|
{ XK_KP_Up, Mod1Mask },
|
|
{ XK_KP_Down, 0 },
|
|
{ XK_KP_Down, Mod1Mask },
|
|
{ XK_KP_Left, 0 },
|
|
{ XK_KP_Left, Mod1Mask },
|
|
{ XK_KP_Right, 0 },
|
|
{ XK_KP_Right, Mod1Mask }
|
|
};
|
|
|
|
static void
|
|
grab_dnd_keys (GtkWidget *widget,
|
|
GdkDevice *device,
|
|
guint32 time)
|
|
{
|
|
guint i;
|
|
GdkWindow *window, *root;
|
|
gint keycode;
|
|
|
|
window = gtk_widget_get_window (widget);
|
|
root = gdk_screen_get_root_window (gtk_widget_get_screen (widget));
|
|
|
|
gdk_error_trap_push ();
|
|
|
|
for (i = 0; i < G_N_ELEMENTS (grab_keys); ++i)
|
|
{
|
|
keycode = XKeysymToKeycode (GDK_WINDOW_XDISPLAY (window), grab_keys[i].keysym);
|
|
XGrabKey (GDK_WINDOW_XDISPLAY (window),
|
|
keycode, grab_keys[i].modifiers,
|
|
GDK_WINDOW_XID (root),
|
|
FALSE,
|
|
GrabModeAsync,
|
|
GrabModeAsync);
|
|
}
|
|
|
|
gdk_flush ();
|
|
gdk_error_trap_pop ();
|
|
|
|
gdk_window_add_filter (NULL, root_key_filter, (gpointer) GDK_WINDOW_XID (window));
|
|
}
|
|
|
|
static void
|
|
ungrab_dnd_keys (GtkWidget *widget,
|
|
GdkDevice *device,
|
|
guint32 time)
|
|
{
|
|
guint i;
|
|
GdkWindow *window, *root;
|
|
gint keycode;
|
|
|
|
window = gtk_widget_get_window (widget);
|
|
root = gdk_screen_get_root_window (gtk_widget_get_screen (widget));
|
|
|
|
gdk_window_remove_filter (NULL, root_key_filter, (gpointer) GDK_WINDOW_XID (window));
|
|
|
|
gdk_error_trap_push ();
|
|
|
|
for (i = 0; i < G_N_ELEMENTS (grab_keys); ++i)
|
|
{
|
|
keycode = XKeysymToKeycode (GDK_WINDOW_XDISPLAY (window), grab_keys[i].keysym);
|
|
XUngrabKey (GDK_WINDOW_XDISPLAY (window),
|
|
keycode, grab_keys[i].modifiers,
|
|
GDK_WINDOW_XID (root));
|
|
}
|
|
|
|
gdk_flush ();
|
|
gdk_error_trap_pop ();
|
|
}
|
|
|
|
#else /* GDK_WINDOWING_X11 && !XINPUT_2 */
|
|
|
|
static void
|
|
grab_dnd_keys (GtkWidget *widget,
|
|
GdkDevice *device,
|
|
guint32 time)
|
|
{
|
|
gdk_device_grab (device,
|
|
gtk_widget_get_window (widget),
|
|
GDK_OWNERSHIP_APPLICATION, FALSE,
|
|
GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK,
|
|
NULL, time);
|
|
}
|
|
|
|
static void
|
|
ungrab_dnd_keys (GtkWidget *widget,
|
|
GdkDevice *device,
|
|
guint32 time)
|
|
{
|
|
gdk_device_ungrab (device, time);
|
|
}
|
|
|
|
#endif /* GDK_WINDOWING_X11 */
|
|
|
|
|
|
/***************************************************************
|
|
* gtk_drag_release_ipc_widget:
|
|
* Releases widget retrieved with gtk_drag_get_ipc_widget ()
|
|
* arguments:
|
|
* widget: the widget to release.
|
|
* results:
|
|
***************************************************************/
|
|
|
|
static void
|
|
gtk_drag_release_ipc_widget (GtkWidget *widget)
|
|
{
|
|
GtkWindow *window = GTK_WINDOW (widget);
|
|
GdkScreen *screen = gtk_widget_get_screen (widget);
|
|
GdkDragContext *context = g_object_get_data (G_OBJECT (widget), "drag-context");
|
|
GSList *drag_widgets = g_object_get_data (G_OBJECT (screen),
|
|
"gtk-dnd-ipc-widgets");
|
|
GdkDevice *pointer, *keyboard;
|
|
|
|
if (context)
|
|
{
|
|
pointer = gdk_drag_context_get_device (context);
|
|
keyboard = gdk_device_get_associated_device (pointer);
|
|
|
|
if (keyboard)
|
|
ungrab_dnd_keys (widget, keyboard, GDK_CURRENT_TIME);
|
|
}
|
|
|
|
if (gtk_window_has_group (window))
|
|
gtk_window_group_remove_window (gtk_window_get_group (window),
|
|
window);
|
|
drag_widgets = g_slist_prepend (drag_widgets, widget);
|
|
g_object_set_data (G_OBJECT (screen),
|
|
I_("gtk-dnd-ipc-widgets"),
|
|
drag_widgets);
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gtk_drag_can_use_rgba_cursor (GdkDisplay *display,
|
|
gint width,
|
|
gint height)
|
|
{
|
|
guint max_width, max_height;
|
|
|
|
if (!gdk_display_supports_cursor_color (display))
|
|
return FALSE;
|
|
|
|
if (!gdk_display_supports_cursor_alpha (display))
|
|
return FALSE;
|
|
|
|
gdk_display_get_maximal_cursor_size (display,
|
|
&max_width,
|
|
&max_height);
|
|
if (width > max_width || height > max_height)
|
|
{
|
|
/* can't use rgba cursor (too large) */
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static GdkCursor *
|
|
gtk_drag_get_cursor (GdkDisplay *display,
|
|
GdkDragAction action,
|
|
GtkDragSourceInfo *info)
|
|
{
|
|
gint i;
|
|
|
|
/* reconstruct the cursors for each new drag (thus !info),
|
|
* to catch cursor theme changes
|
|
*/
|
|
if (!info)
|
|
{
|
|
for (i = 0 ; i < n_drag_cursors - 1; i++)
|
|
if (drag_cursors[i].cursor != NULL)
|
|
{
|
|
gdk_cursor_unref (drag_cursors[i].cursor);
|
|
drag_cursors[i].cursor = NULL;
|
|
}
|
|
}
|
|
|
|
for (i = 0 ; i < n_drag_cursors - 1; i++)
|
|
if (drag_cursors[i].action == action)
|
|
break;
|
|
|
|
if (drag_cursors[i].pixbuf == NULL)
|
|
drag_cursors[i].pixbuf =
|
|
gdk_pixbuf_new_from_inline (-1, drag_cursors[i].data, FALSE, NULL);
|
|
|
|
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)
|
|
drag_cursors[i].cursor = gdk_cursor_new_from_name (display, drag_cursors[i].name);
|
|
|
|
if (drag_cursors[i].cursor == NULL)
|
|
drag_cursors[i].cursor = gdk_cursor_new_from_pixbuf (display, drag_cursors[i].pixbuf, 0, 0);
|
|
|
|
if (info && info->icon_pixbuf)
|
|
{
|
|
gint cursor_width, cursor_height;
|
|
gint icon_width, icon_height;
|
|
gint width, height;
|
|
GdkPixbuf *cursor_pixbuf, *pixbuf;
|
|
gint hot_x, hot_y;
|
|
gint icon_x, icon_y, ref_x, ref_y;
|
|
|
|
if (info->drag_cursors[i] != NULL)
|
|
{
|
|
if (display == gdk_cursor_get_display (info->drag_cursors[i]))
|
|
return info->drag_cursors[i];
|
|
|
|
gdk_cursor_unref (info->drag_cursors[i]);
|
|
info->drag_cursors[i] = NULL;
|
|
}
|
|
|
|
icon_x = info->hot_x;
|
|
icon_y = info->hot_y;
|
|
icon_width = gdk_pixbuf_get_width (info->icon_pixbuf);
|
|
icon_height = gdk_pixbuf_get_height (info->icon_pixbuf);
|
|
|
|
hot_x = hot_y = 0;
|
|
cursor_pixbuf = gdk_cursor_get_image (drag_cursors[i].cursor);
|
|
if (!cursor_pixbuf)
|
|
cursor_pixbuf = g_object_ref (drag_cursors[i].pixbuf);
|
|
else
|
|
{
|
|
if (gdk_pixbuf_get_option (cursor_pixbuf, "x_hot"))
|
|
hot_x = atoi (gdk_pixbuf_get_option (cursor_pixbuf, "x_hot"));
|
|
|
|
if (gdk_pixbuf_get_option (cursor_pixbuf, "y_hot"))
|
|
hot_y = atoi (gdk_pixbuf_get_option (cursor_pixbuf, "y_hot"));
|
|
|
|
#if 0
|
|
/* The code below is an attempt to let cursor themes
|
|
* determine the attachment of the icon to enable things
|
|
* like the following:
|
|
*
|
|
* +-----+
|
|
* | |
|
|
* | ||
|
|
* +-----+|
|
|
* ---+
|
|
*
|
|
* It does not work since Xcursor doesn't allow to attach
|
|
* any additional information to cursors in a retrievable
|
|
* way (there are comments, but no way to get at them
|
|
* short of searching for the actual cursor file).
|
|
* If this code ever gets used, the icon_window placement
|
|
* must be changed to recognize these placement options
|
|
* as well. Note that this code ignores info->hot_x/y.
|
|
*/
|
|
for (j = 0; j < 10; j++)
|
|
{
|
|
const gchar *opt;
|
|
gchar key[32];
|
|
gchar **toks;
|
|
GtkAnchorType icon_anchor;
|
|
|
|
g_snprintf (key, 32, "comment%d", j);
|
|
opt = gdk_pixbuf_get_option (cursor_pixbuf, key);
|
|
if (opt && g_str_has_prefix ("icon-attach:", opt))
|
|
{
|
|
toks = g_strsplit (opt + strlen ("icon-attach:"), "'", -1);
|
|
if (g_strv_length (toks) != 3)
|
|
{
|
|
g_strfreev (toks);
|
|
break;
|
|
}
|
|
icon_anchor = atoi (toks[0]);
|
|
icon_x = atoi (toks[1]);
|
|
icon_y = atoi (toks[2]);
|
|
|
|
switch (icon_anchor)
|
|
{
|
|
case GTK_ANCHOR_NORTH:
|
|
case GTK_ANCHOR_CENTER:
|
|
case GTK_ANCHOR_SOUTH:
|
|
icon_x += icon_width / 2;
|
|
break;
|
|
case GTK_ANCHOR_NORTH_EAST:
|
|
case GTK_ANCHOR_EAST:
|
|
case GTK_ANCHOR_SOUTH_EAST:
|
|
icon_x += icon_width;
|
|
break;
|
|
default: ;
|
|
}
|
|
|
|
switch (icon_anchor)
|
|
{
|
|
case GTK_ANCHOR_WEST:
|
|
case GTK_ANCHOR_CENTER:
|
|
case GTK_ANCHOR_EAST:
|
|
icon_y += icon_height / 2;
|
|
break;
|
|
case GTK_ANCHOR_SOUTH_WEST:
|
|
case GTK_ANCHOR_SOUTH:
|
|
case GTK_ANCHOR_SOUTH_EAST:
|
|
icon_x += icon_height;
|
|
break;
|
|
default: ;
|
|
}
|
|
|
|
g_strfreev (toks);
|
|
break;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
cursor_width = gdk_pixbuf_get_width (cursor_pixbuf);
|
|
cursor_height = gdk_pixbuf_get_height (cursor_pixbuf);
|
|
|
|
ref_x = MAX (hot_x, icon_x);
|
|
ref_y = MAX (hot_y, icon_y);
|
|
width = ref_x + MAX (cursor_width - hot_x, icon_width - icon_x);
|
|
height = ref_y + MAX (cursor_height - hot_y, icon_height - icon_y);
|
|
|
|
if (gtk_drag_can_use_rgba_cursor (display, width, height))
|
|
{
|
|
/* Composite cursor and icon so that both hotspots
|
|
* end up at (ref_x, ref_y)
|
|
*/
|
|
pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
|
|
width, height);
|
|
|
|
gdk_pixbuf_fill (pixbuf, 0xff000000);
|
|
|
|
gdk_pixbuf_composite (info->icon_pixbuf, pixbuf,
|
|
ref_x - icon_x, ref_y - icon_y,
|
|
icon_width, icon_height,
|
|
ref_x - icon_x, ref_y - icon_y,
|
|
1.0, 1.0,
|
|
GDK_INTERP_BILINEAR, 255);
|
|
|
|
gdk_pixbuf_composite (cursor_pixbuf, pixbuf,
|
|
ref_x - hot_x, ref_y - hot_y,
|
|
cursor_width, cursor_height,
|
|
ref_x - hot_x, ref_y - hot_y,
|
|
1.0, 1.0,
|
|
GDK_INTERP_BILINEAR, 255);
|
|
|
|
info->drag_cursors[i] =
|
|
gdk_cursor_new_from_pixbuf (display, pixbuf, ref_x, ref_y);
|
|
|
|
g_object_unref (pixbuf);
|
|
}
|
|
|
|
g_object_unref (cursor_pixbuf);
|
|
|
|
if (info->drag_cursors[i] != NULL)
|
|
return info->drag_cursors[i];
|
|
}
|
|
|
|
return drag_cursors[i].cursor;
|
|
}
|
|
|
|
static void
|
|
gtk_drag_update_cursor (GtkDragSourceInfo *info)
|
|
{
|
|
GdkCursor *cursor;
|
|
gint i;
|
|
|
|
if (!info->have_grab)
|
|
return;
|
|
|
|
for (i = 0 ; i < n_drag_cursors - 1; i++)
|
|
if (info->cursor == drag_cursors[i].cursor ||
|
|
info->cursor == info->drag_cursors[i])
|
|
break;
|
|
|
|
if (i == n_drag_cursors)
|
|
return;
|
|
|
|
cursor = gtk_drag_get_cursor (gdk_cursor_get_display (info->cursor),
|
|
drag_cursors[i].action, info);
|
|
|
|
if (cursor != info->cursor)
|
|
{
|
|
GdkDevice *pointer;
|
|
|
|
pointer = gdk_drag_context_get_device (info->context);
|
|
gdk_device_grab (pointer,
|
|
gtk_widget_get_window (info->ipc_widget),
|
|
GDK_OWNERSHIP_APPLICATION, FALSE,
|
|
GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
|
|
cursor, info->grab_time);
|
|
info->cursor = 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 (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), I_("drag-context"), context);
|
|
|
|
gtk_selection_convert (selection_widget,
|
|
gdk_drag_get_selection (context),
|
|
target,
|
|
time);
|
|
}
|
|
|
|
|
|
/**
|
|
* gtk_drag_get_source_widget:
|
|
* @context: a (destination side) drag context
|
|
*
|
|
* Determines the source widget for a drag.
|
|
*
|
|
* Return value: (transfer none): if the drag is occurring
|
|
* within a single application, a pointer to the source widget.
|
|
* Otherwise, %NULL.
|
|
*/
|
|
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 (gtk_widget_get_window (ipc_widget) == 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_static_string ("DELETE");
|
|
}
|
|
else if (context->protocol == GDK_DRAG_PROTO_MOTIF)
|
|
{
|
|
target = gdk_atom_intern_static_string (success ?
|
|
"XmTRANSFER_SUCCESS" :
|
|
"XmTRANSFER_FAILURE");
|
|
}
|
|
|
|
if (target != GDK_NONE)
|
|
{
|
|
GtkWidget *selection_widget = gtk_drag_get_ipc_widget_for_screen (gdk_drawable_get_screen (context->source_window));
|
|
|
|
g_object_ref (context);
|
|
|
|
g_object_set_data (G_OBJECT (selection_widget), I_("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_is_drawable (widget))
|
|
{
|
|
GdkWindow *window;
|
|
cairo_t *cr;
|
|
|
|
window = gtk_widget_get_window (widget);
|
|
|
|
if (!gtk_widget_get_has_window (widget))
|
|
{
|
|
GtkAllocation allocation;
|
|
|
|
gtk_widget_get_allocation (widget, &allocation);
|
|
x = allocation.x;
|
|
y = allocation.y;
|
|
width = allocation.width;
|
|
height = allocation.height;
|
|
}
|
|
else
|
|
{
|
|
x = 0;
|
|
y = 0;
|
|
gdk_drawable_get_size (window, &width, &height);
|
|
}
|
|
|
|
gtk_paint_shadow (gtk_widget_get_style (widget), window,
|
|
GTK_STATE_NORMAL, GTK_SHADOW_OUT,
|
|
&event->area, widget, "dnd",
|
|
x, y, width, height);
|
|
|
|
cr = gdk_cairo_create (window);
|
|
cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
|
|
cairo_set_line_width (cr, 1.0);
|
|
cairo_rectangle (cr,
|
|
x + 0.5, y + 0.5,
|
|
width - 1, height - 1);
|
|
cairo_stroke (cr);
|
|
cairo_destroy (cr);
|
|
}
|
|
|
|
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);
|
|
|
|
site->track_motion = old_site->track_motion;
|
|
}
|
|
|
|
if (gtk_widget_get_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), I_("gtk-drag-dest"),
|
|
site, gtk_drag_dest_site_destroy);
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_dest_set:
|
|
* @widget: a #GtkWidget
|
|
* @flags: which types of default drag behavior to use
|
|
* @targets: (allow-none) (array length=n_targets): a pointer to an array of #GtkTargetEntry<!-- -->s
|
|
* indicating the drop types that this @widget will accept, or %NULL.
|
|
* Later you can access the list with gtk_drag_dest_get_target_list()
|
|
* and gtk_drag_dest_find_target().
|
|
* @n_targets: the number of entries in @targets
|
|
* @actions: a bitmask of possible actions for a drop onto this @widget.
|
|
*
|
|
* Sets a widget as a potential drop destination, and adds default behaviors.
|
|
*
|
|
* The default behaviors listed in @flags have an effect similar
|
|
* to installing default handlers for the widget's drag-and-drop signals
|
|
* (#GtkWidget:drag-motion, #GtkWidget:drag-drop, ...). They all exist
|
|
* for convenience. When passing #GTK_DEST_DEFAULT_ALL for instance it is
|
|
* sufficient to connect to the widget's #GtkWidget::drag-data-received
|
|
* signal to get primitive, but consistent drag-and-drop support.
|
|
*
|
|
* Things become more complicated when you try to preview the dragged data,
|
|
* as described in the documentation for #GtkWidget:drag-motion. The default
|
|
* behaviors described by @flags make some assumptions, that can conflict
|
|
* with your own signal handlers. For instance #GTK_DEST_DEFAULT_DROP causes
|
|
* invokations of gdk_drag_status() in the context of #GtkWidget:drag-motion,
|
|
* and invokations of gtk_drag_finish() in #GtkWidget:drag-data-received.
|
|
* Especially the later is dramatic, when your own #GtkWidget:drag-motion
|
|
* handler calls gtk_drag_get_data() to inspect the dragged data.
|
|
*
|
|
* There's no way to set a default action here, you can use the
|
|
* #GtkWidget:drag-motion callback for that. Here's an example which selects
|
|
* the action to use depending on whether the control key is pressed or not:
|
|
* |[
|
|
* static void
|
|
* drag_motion (GtkWidget *widget,
|
|
* GdkDragContext *context,
|
|
* gint x,
|
|
* gint y,
|
|
* guint time)
|
|
* {
|
|
* GdkModifierType mask;
|
|
*
|
|
* gdk_window_get_pointer (gtk_widget_get_window (widget),
|
|
* NULL, NULL, &mask);
|
|
* if (mask & GDK_CONTROL_MASK)
|
|
* gdk_drag_status (context, GDK_ACTION_COPY, time);
|
|
* else
|
|
* gdk_drag_status (context, GDK_ACTION_MOVE, time);
|
|
* }
|
|
* ]|
|
|
*/
|
|
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_slice_new0 (GtkDragDestSite);
|
|
|
|
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;
|
|
site->track_motion = FALSE;
|
|
|
|
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;
|
|
site->track_motion = FALSE;
|
|
|
|
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)
|
|
{
|
|
GtkDragDestSite *old_site;
|
|
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
|
|
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);
|
|
}
|
|
|
|
g_object_set_data (G_OBJECT (widget), I_("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: (allow-none): 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)
|
|
{
|
|
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_add_text_targets:
|
|
* @widget: a #GtkWidget that's a drag destination
|
|
*
|
|
* Add the text targets supported by #GtkSelection to
|
|
* the target list of the drag destination. The targets
|
|
* are added with @info = 0. If you need another value,
|
|
* use gtk_target_list_add_text_targets() and
|
|
* gtk_drag_dest_set_target_list().
|
|
*
|
|
* Since: 2.6
|
|
**/
|
|
void
|
|
gtk_drag_dest_add_text_targets (GtkWidget *widget)
|
|
{
|
|
GtkTargetList *target_list;
|
|
|
|
target_list = gtk_drag_dest_get_target_list (widget);
|
|
if (target_list)
|
|
gtk_target_list_ref (target_list);
|
|
else
|
|
target_list = gtk_target_list_new (NULL, 0);
|
|
gtk_target_list_add_text_targets (target_list, 0);
|
|
gtk_drag_dest_set_target_list (widget, target_list);
|
|
gtk_target_list_unref (target_list);
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_dest_add_image_targets:
|
|
* @widget: a #GtkWidget that's a drag destination
|
|
*
|
|
* Add the image targets supported by #GtkSelection to
|
|
* the target list of the drag destination. The targets
|
|
* are added with @info = 0. If you need another value,
|
|
* use gtk_target_list_add_image_targets() and
|
|
* gtk_drag_dest_set_target_list().
|
|
*
|
|
* Since: 2.6
|
|
**/
|
|
void
|
|
gtk_drag_dest_add_image_targets (GtkWidget *widget)
|
|
{
|
|
GtkTargetList *target_list;
|
|
|
|
target_list = gtk_drag_dest_get_target_list (widget);
|
|
if (target_list)
|
|
gtk_target_list_ref (target_list);
|
|
else
|
|
target_list = gtk_target_list_new (NULL, 0);
|
|
gtk_target_list_add_image_targets (target_list, 0, FALSE);
|
|
gtk_drag_dest_set_target_list (widget, target_list);
|
|
gtk_target_list_unref (target_list);
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_dest_add_uri_targets:
|
|
* @widget: a #GtkWidget that's a drag destination
|
|
*
|
|
* Add the URI targets supported by #GtkSelection to
|
|
* the target list of the drag destination. The targets
|
|
* are added with @info = 0. If you need another value,
|
|
* use gtk_target_list_add_uri_targets() and
|
|
* gtk_drag_dest_set_target_list().
|
|
*
|
|
* Since: 2.6
|
|
**/
|
|
void
|
|
gtk_drag_dest_add_uri_targets (GtkWidget *widget)
|
|
{
|
|
GtkTargetList *target_list;
|
|
|
|
target_list = gtk_drag_dest_get_target_list (widget);
|
|
if (target_list)
|
|
gtk_target_list_ref (target_list);
|
|
else
|
|
target_list = gtk_target_list_new (NULL, 0);
|
|
gtk_target_list_add_uri_targets (target_list, 0);
|
|
gtk_drag_dest_set_target_list (widget, target_list);
|
|
gtk_target_list_unref (target_list);
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_dest_set_track_motion:
|
|
* @widget: a #GtkWidget that's a drag destination
|
|
* @track_motion: whether to accept all targets
|
|
*
|
|
* Tells the widget to emit ::drag-motion and ::drag-leave
|
|
* events regardless of the targets and the %GTK_DEST_DEFAULT_MOTION
|
|
* flag.
|
|
*
|
|
* This may be used when a widget wants to do generic
|
|
* actions regardless of the targets that the source offers.
|
|
*
|
|
* Since: 2.10
|
|
**/
|
|
void
|
|
gtk_drag_dest_set_track_motion (GtkWidget *widget,
|
|
gboolean track_motion)
|
|
{
|
|
GtkDragDestSite *site;
|
|
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
|
|
site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest");
|
|
|
|
g_return_if_fail (site != NULL);
|
|
|
|
site->track_motion = track_motion != FALSE;
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_dest_get_track_motion:
|
|
* @widget: a #GtkWidget that's a drag destination
|
|
*
|
|
* Returns whether the widget has been configured to always
|
|
* emit ::drag-motion signals.
|
|
*
|
|
* Return Value: %TRUE if the widget always emits ::drag-motion events
|
|
*
|
|
* Since: 2.10
|
|
**/
|
|
gboolean
|
|
gtk_drag_dest_get_track_motion (GtkWidget *widget)
|
|
{
|
|
GtkDragDestSite *site;
|
|
|
|
g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
|
|
|
|
site = g_object_get_data (G_OBJECT (widget), "gtk-drag-dest");
|
|
|
|
if (site)
|
|
return site->track_motion;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/*************************************************************
|
|
* _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:
|
|
{
|
|
GdkWindow *window;
|
|
gint tx, ty;
|
|
gboolean found;
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
window = gtk_widget_get_window (toplevel);
|
|
|
|
#ifdef GDK_WINDOWING_X11
|
|
/* Hackaround for: http://bugzilla.gnome.org/show_bug.cgi?id=136112
|
|
*
|
|
* Currently gdk_window_get_position doesn't provide reliable
|
|
* information for embedded windows, so we call the much more
|
|
* expensive gdk_window_get_origin().
|
|
*/
|
|
if (GTK_IS_PLUG (toplevel))
|
|
gdk_window_get_origin (window, &tx, &ty);
|
|
else
|
|
#endif /* GDK_WINDOWING_X11 */
|
|
gdk_window_get_position (window, &tx, &ty);
|
|
|
|
found = gtk_drag_find_widget (toplevel,
|
|
context,
|
|
info,
|
|
event->dnd.x_root - tx,
|
|
event->dnd.y_root - ty,
|
|
event->dnd.time,
|
|
(event->type == GDK_DRAG_MOTION) ?
|
|
gtk_drag_dest_motion :
|
|
gtk_drag_dest_drop);
|
|
|
|
if (info->widget && !found)
|
|
{
|
|
gtk_drag_dest_leave (info->widget, context, event->dnd.time);
|
|
info->widget = NULL;
|
|
}
|
|
|
|
/* Send a reply.
|
|
*/
|
|
if (event->type == GDK_DRAG_MOTION)
|
|
{
|
|
if (!found)
|
|
gdk_drag_status (context, 0, event->dnd.time);
|
|
}
|
|
else if (event->type == GDK_DROP_START && !info->proxy_source)
|
|
{
|
|
gdk_drop_reply (context, found, event->dnd.time);
|
|
if ((context->protocol == GDK_DRAG_PROTO_MOTIF) && !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: (allow-none): 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)) &&
|
|
(!(pair->flags & GTK_TARGET_OTHER_APP) || !source_widget) &&
|
|
(!(pair->flags & GTK_TARGET_OTHER_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,
|
|
guint 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_static_string ("DELETE"))
|
|
{
|
|
gtk_drag_finish (context, TRUE, FALSE, time);
|
|
}
|
|
else if ((selection_data->target == gdk_atom_intern_static_string ("XmTRANSFER_SUCCESS")) ||
|
|
(selection_data->target == gdk_atom_intern_static_string ("XmTRANSFER_FAILURE")))
|
|
{
|
|
/* 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), I_("drag-context"), NULL);
|
|
g_object_unref (context);
|
|
|
|
gtk_drag_release_ipc_widget (widget);
|
|
}
|
|
|
|
/*************************************************************
|
|
* gtk_drag_find_widget:
|
|
* Function used to locate widgets for
|
|
* DRAG_MOTION and DROP_START events.
|
|
*************************************************************/
|
|
|
|
static gboolean
|
|
gtk_drag_find_widget (GtkWidget *widget,
|
|
GdkDragContext *context,
|
|
GtkDragDestInfo *info,
|
|
gint x,
|
|
gint y,
|
|
guint32 time,
|
|
GtkDragDestCallback callback)
|
|
{
|
|
if (!gtk_widget_get_mapped (widget) ||
|
|
!gtk_widget_get_sensitive (widget))
|
|
return FALSE;
|
|
|
|
/* Get the widget at the pointer coordinates and travel up
|
|
* the widget hierarchy from there.
|
|
*/
|
|
widget = _gtk_widget_find_at_coords (gtk_widget_get_window (widget),
|
|
x, y, &x, &y);
|
|
if (!widget)
|
|
return FALSE;
|
|
|
|
while (widget)
|
|
{
|
|
GtkWidget *parent;
|
|
GList *hierarchy = NULL;
|
|
gboolean found = FALSE;
|
|
|
|
if (!gtk_widget_get_mapped (widget) ||
|
|
!gtk_widget_get_sensitive (widget))
|
|
return FALSE;
|
|
|
|
/* need to reference the entire hierarchy temporarily in case the
|
|
* ::drag-motion/::drag-drop callbacks change the widget hierarchy.
|
|
*/
|
|
for (parent = widget;
|
|
parent;
|
|
parent = gtk_widget_get_parent (parent))
|
|
{
|
|
hierarchy = g_list_prepend (hierarchy, g_object_ref (parent));
|
|
}
|
|
|
|
/* If the current widget is registered as a drop site, check to
|
|
* emit "drag-motion" to check if we are actually in a drop
|
|
* site.
|
|
*/
|
|
if (g_object_get_data (G_OBJECT (widget), "gtk-drag-dest"))
|
|
{
|
|
found = callback (widget, context, x, y, time);
|
|
|
|
/* If so, send a "drag-leave" to the last widget */
|
|
if (found)
|
|
{
|
|
if (info->widget && info->widget != widget)
|
|
{
|
|
gtk_drag_dest_leave (info->widget, context, time);
|
|
}
|
|
|
|
info->widget = widget;
|
|
}
|
|
}
|
|
|
|
if (!found)
|
|
{
|
|
/* Get the parent before unreffing the hierarchy because
|
|
* invoking the callback might have destroyed the widget
|
|
*/
|
|
parent = gtk_widget_get_parent (widget);
|
|
|
|
/* The parent might be going away when unreffing the
|
|
* hierarchy, so also protect againt that
|
|
*/
|
|
if (parent)
|
|
g_object_add_weak_pointer (G_OBJECT (parent), (gpointer *) &parent);
|
|
}
|
|
|
|
g_list_foreach (hierarchy, (GFunc) g_object_unref, NULL);
|
|
g_list_free (hierarchy);
|
|
|
|
if (found)
|
|
return TRUE;
|
|
|
|
if (parent)
|
|
g_object_remove_weak_pointer (G_OBJECT (parent), (gpointer *) &parent);
|
|
else
|
|
return FALSE;
|
|
|
|
if (!gtk_widget_translate_coordinates (widget, parent, x, y, &x, &y))
|
|
return FALSE;
|
|
|
|
widget = parent;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
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 (widget);
|
|
context = gdk_drag_begin (gtk_widget_get_window (ipc_widget),
|
|
dest_info->context->targets);
|
|
|
|
source_info = gtk_drag_get_source_info (context, TRUE);
|
|
|
|
source_info->ipc_widget = ipc_widget;
|
|
source_info->widget = g_object_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)
|
|
{
|
|
g_slice_free (GtkDragDestInfo, data);
|
|
}
|
|
|
|
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_slice_new0 (GtkDragDestInfo);
|
|
info->context = context;
|
|
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_is_toplevel (toplevel))
|
|
gdk_window_register_dnd (gtk_widget_get_window (toplevel));
|
|
}
|
|
|
|
static void
|
|
gtk_drag_dest_hierarchy_changed (GtkWidget *widget,
|
|
GtkWidget *previous_toplevel)
|
|
{
|
|
GtkWidget *toplevel = gtk_widget_get_toplevel (widget);
|
|
|
|
if (gtk_widget_is_toplevel (toplevel) && gtk_widget_get_realized (toplevel))
|
|
gdk_window_register_dnd (gtk_widget_get_window (toplevel));
|
|
}
|
|
|
|
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_slice_free (GtkDragDestSite, 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 ||
|
|
site->track_motion)
|
|
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->track_motion || 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);
|
|
if (!site->track_motion)
|
|
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 *
|
|
***************/
|
|
|
|
/* Like GtkDragBegin, but also takes a GtkDragSourceSite,
|
|
* so that we can set the icon from the source site information
|
|
*/
|
|
static GdkDragContext *
|
|
gtk_drag_begin_internal (GtkWidget *widget,
|
|
GtkDragSourceSite *site,
|
|
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;
|
|
GdkCursor *cursor;
|
|
GdkDevice *pointer, *keyboard;
|
|
GdkWindow *ipc_window;
|
|
|
|
pointer = keyboard = NULL;
|
|
ipc_widget = gtk_drag_get_ipc_widget (widget);
|
|
|
|
gtk_drag_get_event_actions (event, button, actions,
|
|
&suggested_action, &possible_actions);
|
|
|
|
cursor = gtk_drag_get_cursor (gtk_widget_get_display (widget),
|
|
suggested_action,
|
|
NULL);
|
|
|
|
if (event)
|
|
{
|
|
time = gdk_event_get_time (event);
|
|
if (time == GDK_CURRENT_TIME)
|
|
time = gtk_get_current_event_time ();
|
|
|
|
pointer = gdk_event_get_device (event);
|
|
|
|
if (pointer->source == GDK_SOURCE_KEYBOARD)
|
|
{
|
|
keyboard = pointer;
|
|
pointer = gdk_device_get_associated_device (keyboard);
|
|
}
|
|
else
|
|
keyboard = gdk_device_get_associated_device (pointer);
|
|
}
|
|
else
|
|
{
|
|
GdkDeviceManager *device_manager;
|
|
|
|
device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
|
|
pointer = gdk_device_manager_get_client_pointer (device_manager);
|
|
keyboard = gdk_device_get_associated_device (pointer);
|
|
}
|
|
|
|
if (!pointer)
|
|
return NULL;
|
|
|
|
ipc_window = gtk_widget_get_window (ipc_widget);
|
|
|
|
if (gdk_device_grab (pointer, ipc_window,
|
|
GDK_OWNERSHIP_APPLICATION, FALSE,
|
|
GDK_POINTER_MOTION_MASK |
|
|
GDK_BUTTON_RELEASE_MASK,
|
|
cursor, time) != GDK_GRAB_SUCCESS)
|
|
{
|
|
gtk_drag_release_ipc_widget (ipc_widget);
|
|
return NULL;
|
|
}
|
|
|
|
if (keyboard)
|
|
grab_dnd_keys (ipc_widget, keyboard, time);
|
|
|
|
/* We use a GTK grab here to override any grabs that the widget
|
|
* we are dragging from might have held
|
|
*/
|
|
gtk_device_grab_add (ipc_widget, pointer, FALSE);
|
|
|
|
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;
|
|
}
|
|
|
|
source_widgets = g_slist_prepend (source_widgets, ipc_widget);
|
|
|
|
context = gdk_drag_begin (ipc_window, targets);
|
|
gdk_drag_context_set_device (context, pointer);
|
|
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), I_("gtk-info"), info);
|
|
|
|
info->widget = g_object_ref (widget);
|
|
|
|
info->button = button;
|
|
info->cursor = cursor;
|
|
info->target_list = target_list;
|
|
gtk_target_list_ref (target_list);
|
|
|
|
info->possible_actions = actions;
|
|
|
|
info->status = GTK_DRAG_STATUS_DRAG;
|
|
info->last_event = NULL;
|
|
info->selections = NULL;
|
|
info->icon_window = NULL;
|
|
info->destroy_icon = FALSE;
|
|
|
|
/* 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_device_state (gtk_widget_get_display (widget), pointer,
|
|
&info->cur_screen, &info->cur_x, &info->cur_y, NULL);
|
|
}
|
|
|
|
g_signal_emit_by_name (widget, "drag-begin", info->context);
|
|
|
|
/* Ensure that we have an icon before we start the drag; the
|
|
* application may have set one in ::drag_begin, or it may
|
|
* not have set one.
|
|
*/
|
|
if (!info->icon_window && !info->icon_pixbuf)
|
|
{
|
|
if (!site || site->icon_type == GTK_IMAGE_EMPTY)
|
|
gtk_drag_set_icon_default (context);
|
|
else
|
|
switch (site->icon_type)
|
|
{
|
|
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;
|
|
case GTK_IMAGE_ICON_NAME:
|
|
gtk_drag_set_icon_name (context,
|
|
site->icon_data.name.icon_name,
|
|
-2, -2);
|
|
break;
|
|
case GTK_IMAGE_EMPTY:
|
|
default:
|
|
g_assert_not_reached();
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* We need to composite the icon into the cursor, if we are
|
|
* not using an icon window.
|
|
*/
|
|
if (info->icon_pixbuf)
|
|
{
|
|
cursor = gtk_drag_get_cursor (gtk_widget_get_display (widget),
|
|
suggested_action,
|
|
info);
|
|
|
|
if (cursor != info->cursor)
|
|
{
|
|
gdk_device_grab (pointer, gtk_widget_get_window (widget),
|
|
GDK_OWNERSHIP_APPLICATION, FALSE,
|
|
GDK_POINTER_MOTION_MASK |
|
|
GDK_BUTTON_RELEASE_MASK,
|
|
cursor, time);
|
|
info->cursor = cursor;
|
|
}
|
|
}
|
|
|
|
if (event && event->type == GDK_MOTION_NOTIFY)
|
|
gtk_drag_motion_cb (info->ipc_widget, (GdkEventMotion *)event, info);
|
|
else
|
|
gtk_drag_update (info, info->cur_screen, info->cur_x, info->cur_y, event);
|
|
|
|
info->start_x = info->cur_x;
|
|
info->start_y = info->cur_y;
|
|
|
|
g_signal_connect (info->ipc_widget, "grab-broken-event",
|
|
G_CALLBACK (gtk_drag_grab_broken_event_cb), info);
|
|
g_signal_connect (info->ipc_widget, "grab-notify",
|
|
G_CALLBACK (gtk_drag_grab_notify_cb), info);
|
|
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);
|
|
|
|
info->have_grab = TRUE;
|
|
info->grab_time = time;
|
|
|
|
return info->context;
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_begin:
|
|
* @widget: the source widget.
|
|
* @targets: The targets (data formats) in which the
|
|
* source can provide the data.
|
|
* @actions: A bitmask of the allowed drag actions for this drag.
|
|
* @button: The button the user clicked to start the drag.
|
|
* @event: The event that triggered the start of the drag.
|
|
*
|
|
* Initiates a drag on the source side. The function
|
|
* only needs to be used when the application is
|
|
* starting drags itself, and is not needed when
|
|
* gtk_drag_source_set() is used.
|
|
*
|
|
* The @event is used to retrieve the timestamp that will be used internally to
|
|
* grab the pointer. If @event is #NULL, then GDK_CURRENT_TIME will be used.
|
|
* However, you should try to pass a real event in all cases, since that can be
|
|
* used by GTK+ to get information about the start position of the drag, for
|
|
* example if the @event is a GDK_MOTION_NOTIFY.
|
|
*
|
|
* Generally there are three cases when you want to start a drag by hand by
|
|
* calling this function:
|
|
*
|
|
* 1. During a button-press-event handler, if you want to start a drag
|
|
* immediately when the user presses the mouse button. Pass the @event
|
|
* that you have in your button-press-event handler.
|
|
*
|
|
* 2. During a motion-notify-event handler, if you want to start a drag
|
|
* when the mouse moves past a certain threshold distance after a button-press.
|
|
* Pass the @event that you have in your motion-notify-event handler.
|
|
*
|
|
* 3. During a timeout handler, if you want to start a drag after the mouse
|
|
* button is held down for some time. Try to save the last event that you got
|
|
* from the mouse, using gdk_event_copy(), and pass it to this function
|
|
* (remember to free the event with gdk_event_free() when you are done).
|
|
* If you can really not pass a real event, pass #NULL instead.
|
|
*
|
|
* Return value: the context for this drag.
|
|
**/
|
|
GdkDragContext *
|
|
gtk_drag_begin (GtkWidget *widget,
|
|
GtkTargetList *targets,
|
|
GdkDragAction actions,
|
|
gint button,
|
|
GdkEvent *event)
|
|
{
|
|
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
|
|
g_return_val_if_fail (gtk_widget_get_realized (widget), NULL);
|
|
g_return_val_if_fail (targets != NULL, NULL);
|
|
|
|
return gtk_drag_begin_internal (widget, NULL, targets,
|
|
actions, button, event);
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_source_set:
|
|
* @widget: a #GtkWidget
|
|
* @start_button_mask: the bitmask of buttons that can start the drag
|
|
* @targets: (allow-none) (array length=n_targets): the table of targets that the drag will support,
|
|
* may be %NULL
|
|
* @n_targets: the number of items in @targets
|
|
* @actions: the bitmask of possible actions for a drag from this widget
|
|
*
|
|
* Sets up a widget so that GTK+ will start a drag operation when the user
|
|
* clicks and drags on the widget. The widget must have a window.
|
|
*/
|
|
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_slice_new0 (GtkDragSourceSite);
|
|
|
|
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, "button-release-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),
|
|
I_("gtk-site-data"),
|
|
site, gtk_drag_source_site_destroy);
|
|
}
|
|
|
|
site->start_button_mask = start_button_mask;
|
|
|
|
site->target_list = gtk_target_list_new (targets, n_targets);
|
|
|
|
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_object_set_data (G_OBJECT (widget), I_("gtk-site-data"), NULL);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_source_get_target_list:
|
|
* @widget: a #GtkWidget
|
|
*
|
|
* Gets the list of targets this widget can provide for
|
|
* drag-and-drop.
|
|
*
|
|
* Return value: the #GtkTargetList, or %NULL if none
|
|
*
|
|
* Since: 2.4
|
|
**/
|
|
GtkTargetList *
|
|
gtk_drag_source_get_target_list (GtkWidget *widget)
|
|
{
|
|
GtkDragSourceSite *site;
|
|
|
|
g_return_val_if_fail (GTK_IS_WIDGET (widget), NULL);
|
|
|
|
site = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
|
|
|
|
return site ? site->target_list : NULL;
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_source_set_target_list:
|
|
* @widget: a #GtkWidget that's a drag source
|
|
* @target_list: (allow-none): list of draggable targets, or %NULL for none
|
|
*
|
|
* Changes the target types that this widget offers for drag-and-drop.
|
|
* The widget must first be made into a drag source with
|
|
* gtk_drag_source_set().
|
|
*
|
|
* Since: 2.4
|
|
**/
|
|
void
|
|
gtk_drag_source_set_target_list (GtkWidget *widget,
|
|
GtkTargetList *target_list)
|
|
{
|
|
GtkDragSourceSite *site;
|
|
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
|
|
site = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
|
|
if (site == NULL)
|
|
{
|
|
g_warning ("gtk_drag_source_set_target_list() requires the widget "
|
|
"to already be a drag source.");
|
|
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_source_add_text_targets:
|
|
* @widget: a #GtkWidget that's is a drag source
|
|
*
|
|
* Add the text targets supported by #GtkSelection to
|
|
* the target list of the drag source. The targets
|
|
* are added with @info = 0. If you need another value,
|
|
* use gtk_target_list_add_text_targets() and
|
|
* gtk_drag_source_set_target_list().
|
|
*
|
|
* Since: 2.6
|
|
**/
|
|
void
|
|
gtk_drag_source_add_text_targets (GtkWidget *widget)
|
|
{
|
|
GtkTargetList *target_list;
|
|
|
|
target_list = gtk_drag_source_get_target_list (widget);
|
|
if (target_list)
|
|
gtk_target_list_ref (target_list);
|
|
else
|
|
target_list = gtk_target_list_new (NULL, 0);
|
|
gtk_target_list_add_text_targets (target_list, 0);
|
|
gtk_drag_source_set_target_list (widget, target_list);
|
|
gtk_target_list_unref (target_list);
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_source_add_image_targets:
|
|
* @widget: a #GtkWidget that's is a drag source
|
|
*
|
|
* Add the writable image targets supported by #GtkSelection to
|
|
* the target list of the drag source. The targets
|
|
* are added with @info = 0. If you need another value,
|
|
* use gtk_target_list_add_image_targets() and
|
|
* gtk_drag_source_set_target_list().
|
|
*
|
|
* Since: 2.6
|
|
**/
|
|
void
|
|
gtk_drag_source_add_image_targets (GtkWidget *widget)
|
|
{
|
|
GtkTargetList *target_list;
|
|
|
|
target_list = gtk_drag_source_get_target_list (widget);
|
|
if (target_list)
|
|
gtk_target_list_ref (target_list);
|
|
else
|
|
target_list = gtk_target_list_new (NULL, 0);
|
|
gtk_target_list_add_image_targets (target_list, 0, TRUE);
|
|
gtk_drag_source_set_target_list (widget, target_list);
|
|
gtk_target_list_unref (target_list);
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_source_add_uri_targets:
|
|
* @widget: a #GtkWidget that's is a drag source
|
|
*
|
|
* Add the URI targets supported by #GtkSelection to
|
|
* the target list of the drag source. The targets
|
|
* are added with @info = 0. If you need another value,
|
|
* use gtk_target_list_add_uri_targets() and
|
|
* gtk_drag_source_set_target_list().
|
|
*
|
|
* Since: 2.6
|
|
**/
|
|
void
|
|
gtk_drag_source_add_uri_targets (GtkWidget *widget)
|
|
{
|
|
GtkTargetList *target_list;
|
|
|
|
target_list = gtk_drag_source_get_target_list (widget);
|
|
if (target_list)
|
|
gtk_target_list_ref (target_list);
|
|
else
|
|
target_list = gtk_target_list_new (NULL, 0);
|
|
gtk_target_list_add_uri_targets (target_list, 0);
|
|
gtk_drag_source_set_target_list (widget, target_list);
|
|
gtk_target_list_unref (target_list);
|
|
}
|
|
|
|
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;
|
|
case GTK_IMAGE_ICON_NAME:
|
|
g_free (site->icon_data.name.icon_name);
|
|
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: (allow-none): 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);
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_source_set_icon_name:
|
|
* @widget: a #GtkWidget
|
|
* @icon_name: name of icon to use
|
|
*
|
|
* Sets the icon that will be used for drags from a particular source
|
|
* to a themed icon. See the docs for #GtkIconTheme for more details.
|
|
*
|
|
* Since: 2.8
|
|
**/
|
|
void
|
|
gtk_drag_source_set_icon_name (GtkWidget *widget,
|
|
const gchar *icon_name)
|
|
{
|
|
GtkDragSourceSite *site;
|
|
|
|
g_return_if_fail (GTK_IS_WIDGET (widget));
|
|
g_return_if_fail (icon_name != 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_ICON_NAME;
|
|
site->icon_data.name.icon_name = g_strdup (icon_name);
|
|
}
|
|
|
|
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;
|
|
set_icon_stock_pixbuf (info->context,
|
|
GTK_STOCK_DND, NULL, -2, -2, TRUE);
|
|
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);
|
|
|
|
*hot_x = -2;
|
|
*hot_y = -2;
|
|
}
|
|
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_get_visible (icon_window))
|
|
gdk_window_raise (gtk_widget_get_window (icon_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);
|
|
if (info == NULL)
|
|
{
|
|
if (destroy_on_release)
|
|
gtk_widget_destroy (widget);
|
|
return;
|
|
}
|
|
|
|
gtk_drag_remove_icon (info);
|
|
|
|
if (widget)
|
|
g_object_ref (widget);
|
|
|
|
info->icon_window = widget;
|
|
info->hot_x = hot_x;
|
|
info->hot_y = hot_y;
|
|
info->destroy_icon = destroy_on_release;
|
|
|
|
if (widget && info->icon_pixbuf)
|
|
{
|
|
g_object_unref (info->icon_pixbuf);
|
|
info->icon_pixbuf = NULL;
|
|
}
|
|
|
|
gtk_drag_update_cursor (info);
|
|
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 (gtk_widget_get_window (window),
|
|
pixmap, FALSE);
|
|
g_object_unref (pixmap);
|
|
|
|
if (mask)
|
|
{
|
|
cairo_region_t *region;
|
|
cairo_t *cr;
|
|
|
|
/* XXX: Clean this up properly */
|
|
cr = gdk_cairo_create (mask);
|
|
region = gdk_cairo_region_create_from_surface (cairo_get_target (cr));
|
|
cairo_destroy (cr);
|
|
|
|
gtk_widget_shape_combine_region (window, region);
|
|
cairo_region_destroy (region);
|
|
}
|
|
}
|
|
|
|
static void
|
|
set_icon_stock_pixbuf (GdkDragContext *context,
|
|
const gchar *stock_id,
|
|
GdkPixbuf *pixbuf,
|
|
gint hot_x,
|
|
gint hot_y,
|
|
gboolean force_window)
|
|
{
|
|
GtkWidget *window;
|
|
gint width, height;
|
|
GdkScreen *screen;
|
|
GdkDisplay *display;
|
|
|
|
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_type_hint (GTK_WINDOW (window), GDK_WINDOW_TYPE_HINT_DND);
|
|
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 (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);
|
|
|
|
display = gdk_drawable_get_display (context->source_window);
|
|
width = gdk_pixbuf_get_width (pixbuf);
|
|
height = gdk_pixbuf_get_height (pixbuf);
|
|
|
|
if (!force_window &&
|
|
gtk_drag_can_use_rgba_cursor (display, width + 2, height + 2))
|
|
{
|
|
GtkDragSourceInfo *info;
|
|
|
|
gtk_widget_destroy (window);
|
|
|
|
info = gtk_drag_get_source_info (context, FALSE);
|
|
|
|
if (info->icon_pixbuf)
|
|
g_object_unref (info->icon_pixbuf);
|
|
info->icon_pixbuf = pixbuf;
|
|
|
|
gtk_drag_set_icon_window (context, NULL, hot_x, hot_y, TRUE);
|
|
}
|
|
else
|
|
{
|
|
gtk_widget_set_size_request (window, width, height);
|
|
|
|
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, FALSE);
|
|
}
|
|
|
|
/**
|
|
* 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 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, FALSE);
|
|
}
|
|
|
|
/**
|
|
* 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: (allow-none): the transparency mask for the icon or %NULL for none.
|
|
* @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_type_hint (GTK_WINDOW (window), GDK_WINDOW_TYPE_HINT_DND);
|
|
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 (gtk_widget_get_window (window),
|
|
pixmap, FALSE);
|
|
|
|
if (mask)
|
|
{
|
|
cairo_region_t *region;
|
|
cairo_t *cr;
|
|
|
|
/* XXX: Clean this up properly */
|
|
cr = gdk_cairo_create (mask);
|
|
region = gdk_cairo_region_create_from_surface (cairo_get_target (cr));
|
|
cairo_destroy (cr);
|
|
|
|
gtk_widget_shape_combine_region (window, region);
|
|
cairo_region_destroy (region);
|
|
}
|
|
|
|
gtk_drag_set_icon_window (context, window, hot_x, hot_y, TRUE);
|
|
}
|
|
|
|
/* XXX: This function is in gdk, too. Should it be in Cairo? */
|
|
static gboolean
|
|
_gtk_cairo_surface_extents (cairo_surface_t *surface,
|
|
GdkRectangle *extents)
|
|
{
|
|
double x1, x2, y1, y2;
|
|
cairo_t *cr;
|
|
|
|
g_return_val_if_fail (surface != NULL, FALSE);
|
|
g_return_val_if_fail (extents != NULL, FALSE);
|
|
|
|
cr = cairo_create (surface);
|
|
cairo_clip_extents (cr, &x1, &y1, &x2, &y2);
|
|
|
|
x1 = floor (x1);
|
|
y1 = floor (y1);
|
|
x2 = ceil (x2);
|
|
y2 = ceil (y2);
|
|
x2 -= x1;
|
|
y2 -= y1;
|
|
|
|
if (x1 < G_MININT || x1 > G_MAXINT ||
|
|
y1 < G_MININT || y1 > G_MAXINT ||
|
|
x2 > G_MAXINT || y2 > G_MAXINT)
|
|
{
|
|
extents->x = extents->y = extents->width = extents->height = 0;
|
|
return FALSE;
|
|
}
|
|
|
|
extents->x = x1;
|
|
extents->y = y1;
|
|
extents->width = x2;
|
|
extents->height = y2;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_set_icon_surface:
|
|
* @context: the context for a drag. (This must be called
|
|
* with a context for the source side of a drag)
|
|
* @surface: the surface to use as icon
|
|
*
|
|
* Sets @surface as the icon for a given drag. GTK+ retains
|
|
* references for the arguments, and will release them when
|
|
* they are no longer needed.
|
|
**/
|
|
void
|
|
gtk_drag_set_icon_surface (GdkDragContext *context,
|
|
cairo_surface_t *surface)
|
|
{
|
|
GtkWidget *window;
|
|
GdkScreen *screen;
|
|
GdkRectangle extents;
|
|
cairo_pattern_t *pattern;
|
|
|
|
g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
|
|
g_return_if_fail (context->is_source);
|
|
g_return_if_fail (surface != NULL);
|
|
|
|
_gtk_cairo_surface_extents (surface, &extents);
|
|
|
|
|
|
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_type_hint (GTK_WINDOW (window), GDK_WINDOW_TYPE_HINT_DND);
|
|
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 (window, TRUE);
|
|
|
|
gtk_widget_set_size_request (window, extents.width, extents.height);
|
|
gtk_widget_realize (window);
|
|
|
|
if (cairo_surface_get_content (surface) != CAIRO_CONTENT_COLOR)
|
|
{
|
|
cairo_surface_t *saturated;
|
|
cairo_region_t *region;
|
|
cairo_t *cr;
|
|
|
|
region = gdk_cairo_region_create_from_surface (surface);
|
|
gtk_widget_shape_combine_region (window, region);
|
|
cairo_region_destroy (region);
|
|
|
|
/* Need to saturate the colors, so it doesn't look like semi-transparent
|
|
* pixels were painted on black. */
|
|
saturated = gdk_window_create_similar_surface (gtk_widget_get_window (window),
|
|
CAIRO_CONTENT_COLOR,
|
|
extents.width,
|
|
extents.height);
|
|
|
|
cr = cairo_create (saturated);
|
|
cairo_push_group_with_content (cr, CAIRO_CONTENT_COLOR_ALPHA);
|
|
cairo_set_source_surface (cr, surface, extents.x, extents.y);
|
|
cairo_paint (cr);
|
|
cairo_set_operator (cr, CAIRO_OPERATOR_SATURATE);
|
|
cairo_paint (cr);
|
|
cairo_pop_group_to_source (cr);
|
|
cairo_paint (cr);
|
|
cairo_destroy (cr);
|
|
|
|
pattern = cairo_pattern_create_for_surface (saturated);
|
|
|
|
cairo_surface_destroy (saturated);
|
|
}
|
|
else
|
|
{
|
|
cairo_matrix_t matrix;
|
|
|
|
pattern = cairo_pattern_create_for_surface (surface);
|
|
cairo_matrix_init_translate (&matrix, extents.x, extents.y);
|
|
cairo_pattern_set_matrix (pattern, &matrix);
|
|
}
|
|
|
|
gdk_window_set_background_pattern (gtk_widget_get_window (window), pattern);
|
|
|
|
gtk_drag_set_icon_window (context, window, extents.x, extents.y, TRUE);
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_set_icon_name:
|
|
* @context: the context for a drag. (This must be called
|
|
* with a context for the source side of a drag)
|
|
* @icon_name: name of icon to use
|
|
* @hot_x: the X offset of the hotspot within the icon
|
|
* @hot_y: the Y offset of the hotspot within the icon
|
|
*
|
|
* Sets the icon for a given drag from a named themed icon. See
|
|
* the docs for #GtkIconTheme for more details. Note that the
|
|
* size of the icon depends on the icon theme (the icon is
|
|
* loaded at the symbolic size #GTK_ICON_SIZE_DND), thus
|
|
* @hot_x and @hot_y have to be used with care.
|
|
*
|
|
* Since: 2.8
|
|
**/
|
|
void
|
|
gtk_drag_set_icon_name (GdkDragContext *context,
|
|
const gchar *icon_name,
|
|
gint hot_x,
|
|
gint hot_y)
|
|
{
|
|
GdkScreen *screen;
|
|
GtkSettings *settings;
|
|
GtkIconTheme *icon_theme;
|
|
GdkPixbuf *pixbuf;
|
|
gint width, height, icon_size;
|
|
|
|
g_return_if_fail (GDK_IS_DRAG_CONTEXT (context));
|
|
g_return_if_fail (context->is_source);
|
|
g_return_if_fail (icon_name != NULL);
|
|
|
|
screen = gdk_drawable_get_screen (context->source_window);
|
|
g_return_if_fail (screen != NULL);
|
|
|
|
settings = gtk_settings_get_for_screen (screen);
|
|
if (gtk_icon_size_lookup_for_settings (settings,
|
|
GTK_ICON_SIZE_DND,
|
|
&width, &height))
|
|
icon_size = MAX (width, height);
|
|
else
|
|
icon_size = 32; /* default value for GTK_ICON_SIZE_DND */
|
|
|
|
icon_theme = gtk_icon_theme_get_for_screen (screen);
|
|
|
|
pixbuf = gtk_icon_theme_load_icon (icon_theme, icon_name,
|
|
icon_size, 0, NULL);
|
|
if (pixbuf)
|
|
set_icon_stock_pixbuf (context, NULL, pixbuf, hot_x, hot_y, FALSE);
|
|
else
|
|
g_warning ("Cannot load drag icon from icon name %s", icon_name);
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
|
|
gtk_drag_set_icon_stock (context, GTK_STOCK_DND, -2, -2);
|
|
}
|
|
|
|
/*************************************************************
|
|
* _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,
|
|
info);
|
|
if (info->cursor != cursor)
|
|
{
|
|
GdkDevice *pointer;
|
|
|
|
pointer = gdk_drag_context_get_device (context);
|
|
gdk_device_grab (pointer, gtk_widget_get_window (widget),
|
|
GDK_OWNERSHIP_APPLICATION, FALSE,
|
|
GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK,
|
|
cursor, info->grab_time);
|
|
info->cursor = cursor;
|
|
}
|
|
|
|
gtk_drag_add_update_idle (info);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case GDK_DROP_FINISHED:
|
|
gtk_drag_drop_finished (info, GTK_DRAG_RESULT_SUCCESS, 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_static_string ("XmTRANSFER_SUCCESS"),
|
|
TARGET_MOTIF_SUCCESS);
|
|
gtk_selection_add_target (info->ipc_widget,
|
|
selection,
|
|
gdk_atom_intern_static_string ("XmTRANSFER_FAILURE"),
|
|
TARGET_MOTIF_FAILURE);
|
|
}
|
|
|
|
gtk_selection_add_target (info->ipc_widget,
|
|
selection,
|
|
gdk_atom_intern_static_string ("DELETE"),
|
|
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,
|
|
GtkDragResult result,
|
|
guint time)
|
|
{
|
|
gboolean success;
|
|
|
|
success = (result == GTK_DRAG_RESULT_SUCCESS);
|
|
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)
|
|
g_signal_emit_by_name (info->widget, "drag-failed",
|
|
info->context, result, &success);
|
|
|
|
if (success)
|
|
{
|
|
gtk_drag_source_info_destroy (info);
|
|
}
|
|
else
|
|
{
|
|
GtkDragAnim *anim = g_slice_new0 (GtkDragAnim);
|
|
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);
|
|
|
|
if (!info->icon_window)
|
|
set_icon_stock_pixbuf (info->context, NULL, info->icon_pixbuf,
|
|
0, 0, TRUE);
|
|
|
|
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);
|
|
gdk_threads_add_timeout (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) == gtk_widget_get_window (info->ipc_widget))
|
|
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_static_string ("application/x-rootwindow-drop");
|
|
GdkAtom target2 = gdk_atom_intern_static_string ("application/x-rootwin-drop");
|
|
|
|
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, GTK_DRAG_RESULT_SUCCESS, time);
|
|
return;
|
|
}
|
|
tmp_list = tmp_list->next;
|
|
}
|
|
gtk_drag_drop_finished (info, GTK_DRAG_RESULT_NO_TARGET, time);
|
|
}
|
|
else
|
|
{
|
|
if (info->icon_window)
|
|
gtk_widget_hide (info->icon_window);
|
|
|
|
gdk_drag_drop (info->context, time);
|
|
info->drop_timeout = gdk_threads_add_timeout (DROP_ABORT_TIME,
|
|
gtk_drag_abort_timeout,
|
|
info);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Source side callbacks.
|
|
*/
|
|
|
|
static gboolean
|
|
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))
|
|
{
|
|
site->state = 0;
|
|
gtk_drag_begin_internal (widget, site, site->target_list,
|
|
site->actions,
|
|
i, event);
|
|
|
|
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_slice_free (GtkDragSourceSite, 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_static_string ("NULL");
|
|
|
|
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, GTK_DRAG_RESULT_SUCCESS, time);
|
|
gtk_selection_data_set (selection_data, null_atom, 8, NULL, 0);
|
|
break;
|
|
case TARGET_MOTIF_FAILURE:
|
|
gtk_drag_drop_finished (info, GTK_DRAG_RESULT_NO_TARGET, 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 gboolean
|
|
gtk_drag_anim_timeout (gpointer data)
|
|
{
|
|
GtkDragAnim *anim;
|
|
GtkDragSourceInfo *info;
|
|
gint x, y;
|
|
gboolean retval;
|
|
|
|
anim = data;
|
|
info = anim->info;
|
|
|
|
if (anim->step == anim->n_steps)
|
|
{
|
|
gtk_drag_source_info_destroy (anim->info);
|
|
g_slice_free (GtkDragAnim, anim);
|
|
|
|
retval = FALSE;
|
|
}
|
|
else
|
|
{
|
|
x = (info->start_x * (anim->step + 1) +
|
|
info->cur_x * (anim->n_steps - anim->step - 1)) / anim->n_steps;
|
|
y = (info->start_y * (anim->step + 1) +
|
|
info->cur_y * (anim->n_steps - anim->step - 1)) / anim->n_steps;
|
|
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),
|
|
x - hot_x,
|
|
y - hot_y);
|
|
}
|
|
|
|
anim->step++;
|
|
|
|
retval = TRUE;
|
|
}
|
|
|
|
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)
|
|
{
|
|
gint i;
|
|
|
|
for (i = 0; i < n_drag_cursors; i++)
|
|
{
|
|
if (info->drag_cursors[i] != NULL)
|
|
{
|
|
gdk_cursor_unref (info->drag_cursors[i]);
|
|
info->drag_cursors[i] = NULL;
|
|
}
|
|
}
|
|
|
|
gtk_drag_remove_icon (info);
|
|
|
|
if (info->icon_pixbuf)
|
|
{
|
|
g_object_unref (info->icon_pixbuf);
|
|
info->icon_pixbuf = NULL;
|
|
}
|
|
|
|
g_signal_handlers_disconnect_by_func (info->ipc_widget,
|
|
gtk_drag_grab_broken_event_cb,
|
|
info);
|
|
g_signal_handlers_disconnect_by_func (info->ipc_widget,
|
|
gtk_drag_grab_notify_cb,
|
|
info);
|
|
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);
|
|
|
|
if (!info->proxy_dest)
|
|
g_signal_emit_by_name (info->widget, "drag-end", info->context);
|
|
|
|
if (info->widget)
|
|
g_object_unref (info->widget);
|
|
|
|
gtk_selection_remove_all (info->ipc_widget);
|
|
g_object_set_data (G_OBJECT (info->ipc_widget), I_("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);
|
|
|
|
if (info->update_idle)
|
|
g_source_remove (info->update_idle);
|
|
|
|
g_free (info);
|
|
}
|
|
|
|
static gboolean
|
|
gtk_drag_update_idle (gpointer data)
|
|
{
|
|
GtkDragSourceInfo *info = data;
|
|
GdkWindow *dest_window;
|
|
GdkDragProtocol protocol;
|
|
GdkAtom selection;
|
|
|
|
GdkDragAction action;
|
|
GdkDragAction possible_actions;
|
|
guint32 time;
|
|
|
|
info->update_idle = 0;
|
|
|
|
if (info->last_event)
|
|
{
|
|
time = gtk_drag_get_event_time (info->last_event);
|
|
gtk_drag_get_event_actions (info->last_event,
|
|
info->button,
|
|
info->possible_actions,
|
|
&action, &possible_actions);
|
|
gtk_drag_update_icon (info);
|
|
gdk_drag_find_window_for_screen (info->context,
|
|
info->icon_window ? gtk_widget_get_window (info->icon_window) : NULL,
|
|
info->cur_screen, info->cur_x, info->cur_y,
|
|
&dest_window, &protocol);
|
|
|
|
if (!gdk_drag_motion (info->context, dest_window, protocol,
|
|
info->cur_x, info->cur_y, action,
|
|
possible_actions,
|
|
time))
|
|
{
|
|
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);
|
|
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
gtk_drag_add_update_idle (GtkDragSourceInfo *info)
|
|
{
|
|
/* We use an idle lower than GDK_PRIORITY_REDRAW so that exposes
|
|
* from the last move can catch up before we move again.
|
|
*/
|
|
if (!info->update_idle)
|
|
info->update_idle = gdk_threads_add_idle_full (GDK_PRIORITY_REDRAW + 5,
|
|
gtk_drag_update_idle,
|
|
info,
|
|
NULL);
|
|
}
|
|
|
|
/**
|
|
* gtk_drag_update:
|
|
* @info: DragSourceInfo for the drag
|
|
* @screen: new screen
|
|
* @x_root: new X position
|
|
* @y_root: new y position
|
|
* @event: event received requiring update
|
|
*
|
|
* Updates the status of the drag; called when the
|
|
* cursor moves or the modifier changes
|
|
**/
|
|
static void
|
|
gtk_drag_update (GtkDragSourceInfo *info,
|
|
GdkScreen *screen,
|
|
gint x_root,
|
|
gint y_root,
|
|
GdkEvent *event)
|
|
{
|
|
info->cur_screen = screen;
|
|
info->cur_x = x_root;
|
|
info->cur_y = y_root;
|
|
if (info->last_event)
|
|
{
|
|
gdk_event_free ((GdkEvent *)info->last_event);
|
|
info->last_event = NULL;
|
|
}
|
|
if (event)
|
|
info->last_event = gdk_event_copy ((GdkEvent *)event);
|
|
|
|
gtk_drag_add_update_idle (info);
|
|
}
|
|
|
|
/*************************************************************
|
|
* 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;
|
|
GdkDevice *pointer, *keyboard;
|
|
|
|
pointer = gdk_drag_context_get_device (info->context);
|
|
keyboard = gdk_device_get_associated_device (pointer);
|
|
|
|
/* Prevent ungrab before grab (see bug 623865) */
|
|
if (info->grab_time == GDK_CURRENT_TIME)
|
|
time = GDK_CURRENT_TIME;
|
|
|
|
if (info->update_idle)
|
|
{
|
|
g_source_remove (info->update_idle);
|
|
info->update_idle = 0;
|
|
}
|
|
|
|
if (info->last_event)
|
|
{
|
|
gdk_event_free (info->last_event);
|
|
info->last_event = NULL;
|
|
}
|
|
|
|
info->have_grab = FALSE;
|
|
|
|
g_signal_handlers_disconnect_by_func (info->ipc_widget,
|
|
gtk_drag_grab_broken_event_cb,
|
|
info);
|
|
g_signal_handlers_disconnect_by_func (info->ipc_widget,
|
|
gtk_drag_grab_notify_cb,
|
|
info);
|
|
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);
|
|
|
|
gdk_device_ungrab (pointer, time);
|
|
ungrab_dnd_keys (info->ipc_widget, keyboard, time);
|
|
gtk_device_grab_remove (info->ipc_widget, pointer);
|
|
|
|
/* Send on a release pair to 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 = pointer;
|
|
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, GtkDragResult result, guint32 time)
|
|
{
|
|
gtk_drag_end (info, time);
|
|
gdk_drag_abort (info->context, time);
|
|
gtk_drag_drop_finished (info, result, time);
|
|
}
|
|
|
|
/*************************************************************
|
|
* gtk_drag_motion_cb:
|
|
* "motion-notify-event" callback during drag.
|
|
* arguments:
|
|
*
|
|
* results:
|
|
*************************************************************/
|
|
|
|
static gboolean
|
|
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_device_state (display, event->device,
|
|
&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:
|
|
*************************************************************/
|
|
|
|
#define BIG_STEP 20
|
|
#define SMALL_STEP 1
|
|
|
|
static gboolean
|
|
gtk_drag_key_cb (GtkWidget *widget,
|
|
GdkEventKey *event,
|
|
gpointer data)
|
|
{
|
|
GtkDragSourceInfo *info = (GtkDragSourceInfo *)data;
|
|
GdkModifierType state;
|
|
GdkWindow *root_window;
|
|
GdkDevice *pointer;
|
|
gint dx, dy;
|
|
|
|
dx = dy = 0;
|
|
state = event->state & gtk_accelerator_get_default_mod_mask ();
|
|
pointer = gdk_device_get_associated_device (gdk_event_get_device ((GdkEvent *) event));
|
|
|
|
if (event->type == GDK_KEY_PRESS)
|
|
{
|
|
switch (event->keyval)
|
|
{
|
|
case GDK_KEY_Escape:
|
|
gtk_drag_cancel (info, GTK_DRAG_RESULT_USER_CANCELLED, event->time);
|
|
return TRUE;
|
|
|
|
case GDK_KEY_space:
|
|
case GDK_KEY_Return:
|
|
case GDK_KEY_ISO_Enter:
|
|
case GDK_KEY_KP_Enter:
|
|
case GDK_KEY_KP_Space:
|
|
gtk_drag_end (info, event->time);
|
|
gtk_drag_drop (info, event->time);
|
|
return TRUE;
|
|
|
|
case GDK_KEY_Up:
|
|
case GDK_KEY_KP_Up:
|
|
dy = (state & GDK_MOD1_MASK) ? -BIG_STEP : -SMALL_STEP;
|
|
break;
|
|
|
|
case GDK_KEY_Down:
|
|
case GDK_KEY_KP_Down:
|
|
dy = (state & GDK_MOD1_MASK) ? BIG_STEP : SMALL_STEP;
|
|
break;
|
|
|
|
case GDK_KEY_Left:
|
|
case GDK_KEY_KP_Left:
|
|
dx = (state & GDK_MOD1_MASK) ? -BIG_STEP : -SMALL_STEP;
|
|
break;
|
|
|
|
case GDK_KEY_Right:
|
|
case GDK_KEY_KP_Right:
|
|
dx = (state & GDK_MOD1_MASK) ? BIG_STEP : SMALL_STEP;
|
|
break;
|
|
}
|
|
|
|
}
|
|
|
|
/* 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_device_position (root_window, pointer, NULL, NULL, &state);
|
|
event->state = state;
|
|
|
|
if (dx != 0 || dy != 0)
|
|
{
|
|
info->cur_x += dx;
|
|
info->cur_y += dy;
|
|
gdk_display_warp_device (gtk_widget_get_display (widget), pointer,
|
|
gtk_widget_get_screen (widget),
|
|
info->cur_x, info->cur_y);
|
|
}
|
|
|
|
gtk_drag_update (info, info->cur_screen, info->cur_x, info->cur_y, (GdkEvent *)event);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gtk_drag_grab_broken_event_cb (GtkWidget *widget,
|
|
GdkEventGrabBroken *event,
|
|
gpointer data)
|
|
{
|
|
GtkDragSourceInfo *info = (GtkDragSourceInfo *)data;
|
|
|
|
/* Don't cancel if we break the implicit grab from the initial button_press.
|
|
* Also, don't cancel if we re-grab on the widget or on our IPC window, for
|
|
* example, when changing the drag cursor.
|
|
*/
|
|
if (event->implicit
|
|
|| event->grab_window == gtk_widget_get_window (info->widget)
|
|
|| event->grab_window == gtk_widget_get_window (info->ipc_widget))
|
|
return FALSE;
|
|
|
|
gtk_drag_cancel (info, GTK_DRAG_RESULT_GRAB_BROKEN, gtk_get_current_event_time ());
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
gtk_drag_grab_notify_cb (GtkWidget *widget,
|
|
gboolean was_grabbed,
|
|
gpointer data)
|
|
{
|
|
GtkDragSourceInfo *info = (GtkDragSourceInfo *)data;
|
|
GdkDevice *pointer;
|
|
|
|
pointer = gdk_drag_context_get_device (info->context);
|
|
|
|
if (gtk_widget_device_is_shadowed (widget, pointer))
|
|
{
|
|
/* We have to block callbacks to avoid recursion here, because
|
|
gtk_drag_cancel calls gtk_grab_remove (via gtk_drag_end) */
|
|
g_signal_handlers_block_by_func (widget, gtk_drag_grab_notify_cb, data);
|
|
gtk_drag_cancel (info, GTK_DRAG_RESULT_GRAB_BROKEN, gtk_get_current_event_time ());
|
|
g_signal_handlers_unblock_by_func (widget, gtk_drag_grab_notify_cb, data);
|
|
}
|
|
}
|
|
|
|
|
|
/*************************************************************
|
|
* gtk_drag_button_release_cb:
|
|
* "button-release-event" callback during drag.
|
|
* arguments:
|
|
*
|
|
* results:
|
|
*************************************************************/
|
|
|
|
static gboolean
|
|
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, GTK_DRAG_RESULT_NO_TARGET, event->time);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gtk_drag_abort_timeout (gpointer data)
|
|
{
|
|
GtkDragSourceInfo *info = data;
|
|
guint32 time = GDK_CURRENT_TIME;
|
|
|
|
if (info->proxy_dest)
|
|
time = info->proxy_dest->proxy_drop_time;
|
|
|
|
info->drop_timeout = 0;
|
|
gtk_drag_drop_finished (info, GTK_DRAG_RESULT_TIMEOUT_EXPIRED, time);
|
|
|
|
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 threshold, 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);
|
|
}
|