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gtk2/gtk/gtkdnd.c
Havoc Pennington df4fc36721 Make this compile without framebuffer enabled 
2000-06-20  Havoc Pennington  <hp@redhat.com>

* modules/linux-fb/Makefile.am: Make this compile
without framebuffer enabled

* gdk/linux-fb/Makefile.am: Add conditional to not build
framebuffer unless specified in configure

* gdk/gdkdraw.c (gdk_draw_drawable): Fix bug where I was getting
the size of the target instead of source if -1 was passed for
width/height

* gdk/x11/gdkgeometry-x11.c (gdk_window_compute_position): Fix
width/height confusion.

2000-06-19  Havoc Pennington  <hp@redhat.com>

* gdk/x11/gdkx.h (GDK_WINDOW_XWINDOW): change this to be
GDK_DRAWABLE_XID. In the future, we probably want to make it
faster with G_DISABLE_CHECKS turned on.

2000-06-14  Havoc Pennington  <hp@redhat.com>

        * gdk/Makefile.am: add gdkpixmap.c

	* gdk/gdk.c: s/gdk_window_init/_gdk_windowing_window_init/
	s/gdk_image_init/_gdk_windowing_image_init

	* gdk/gdkcolor.c: make ref/unref compat wrappers for GObject
	ref/unref

	* gdk/gdkcolor.h: make GdkColormap a GObject subclass

	* gdk/gdkcompat.h: remove GdkWindowType compat, since
	GdkWindowType is now non-deprecated;
	change gdk_window_get_type() compat to be
	gdk_window_get_window_type().

	* gdk/gdkdnd.h: make GdkDragContext a GObject.

	* gdk/gdkdraw.c, gdk/gdkdraw.h: Convert GdkDrawable to a pure
	virtual GObject. Make all functions call into the vtable.
	Move gdk_image_put() guts in here. Remove GdkDrawableType
	and gdk_drawable_get_type(), these are now GdkWindow-specific.
	draw_image, get_depth, get_size, set_colormap, get_colormap,
	get_visual added to the vtable.

	* gdk/gdkgc.h, gdk/gdkgc.c: Convert GdkGC to a pure virtual
	GObject. Virtualize everything.
	(gdk_gc_new_with_values): remove check for destroyed window,
	because now GdkWindow::create_gc will check this.
	(gdk_gc_set_values): New function to set GC values, this
	was already implemented but wasn't in the header

	* gdk/gdkimage.h, gdk/gdkimage.c: Convert GdkImage to a GObject.

	* gdk/gdkinternals.h: Remove _gdk_window_alloc(), remove
	_gdk_window_draw_image(), remove _gdk_windowing_window_class,
	remove _gdk_window_class; add _gdk_window_impl_get_type() and
	_gdk_pixmap_impl_get_type(). Rename gdk_window_init to
	_gdk_windowing_window_init, rename gdk_image_init to
	_gdk_windowing_image_init.

	* gdk/gdkpango.c: Reflect GObject-ification of PangoContext.
	(gdk_draw_layout): Remove check for destroyed window,
	because all the drawable methods already check it.

	* gdk/gdkpixmap.h, gdk/gdkpixmap.c: Convert GdkPixmap to GObject.
	Add gdkpixmap.c which contains implementation of GdkDrawable
	virtual table (by chaining to a platform-specific implementation
	object).

	* gdk/gdkprivate.h: Remove GDK_IS_WINDOW, GDK_IS_PIXMAP,
	GDK_DRAWABLE_DESTROYED. Add GDK_WINDOW_DESTROYED. Replace
	GDK_DRAWABLE_TYPE with GDK_WINDOW_TYPE. Remove GdkDrawablePrivate,
	GdkWindowPrivate, GdkImageClass, GdkImagePrivate, GdkGCPrivate,
	GdkColormapPrivate.

	* gdk/gdktypes.h: #include <glib-object.h>

	* gdk/gdkwindow.h, gdk/gdkwindow.c: Convert GdkWindow to GObject.
	Move most functionality to platform-specific implementation
	object. GdkWindow itself now handles the backing store, then
	chains to the platform-specific implementation.
	(gdk_window_get_window_type): return GdkWindowType of the window.
	(gdk_window_peek_children): New routine, returns the children of
	a GdkWindow
	(gdk_window_get_children): Was in X11-specific code and did
	XQueryTree. Changed to simply return a copy of window->children;
	so it can go in cross-platform code.

	* gdk/x11/Makefile.am: fix broken MKINSTALLDIRS path

	* gdk/x11/gdkcolor-x11.c: implement X-specific parts of
	GdkColormap; just changed to use the new private data instead
	of casting to GdkColormapPrivate.

	* gdk/x11/gdkcursor-x11.c: added a couple typechecks to
	gdk_cursor_new().

	* gdk/x11/gdkdnd-x11.c: Change the way we access private fields
	(private data member in the GObject).
	(xdnd_manager_source_filter): Function had broken
	error handling, fix it (use gdk_error_trap_push).

	* gdk/x11/gdkdrawable-x11.c: This file now implements
	a base class for GdkWindowImplX11/GdkPixmapImplX11. This
	base class is purely for the convenience of the X port,
	and not part of the interface to cross-platform GDK.

	* gdk/x11/gdkevents-x11.c: Reflect various renamings.

	* gdk/x11/gdkgc-x11.c: Implement a subclass of GdkGC that's
	specific to X, and returned by the create_gc virtual method
	of GdkDrawableImplX11.
	(gdk_x11_gc_set_dashes): Change this to take an array of gint8
	rather than gchar, this was also changed in the GdkGC vtable.
	(gdk_x11_gc_values_to_xvalues): If GdkGCValues is NULL, or the
	mask is 0, return immediately, instead of checking every flag.
	This is faster, and keeps us from segfaulting if values is NULL
	and the mask contains some nonzero flags.

	* gdk/x11/gdkgeometry-x11.c: deal with all the rearranging of
	GdkWindow.

	* gdk/x11/gdkglobals-x11.c: change type of grab window, since
	GdkWindowPrivate is gone.

	* gdk/x11/gdkim-x11.c: rename things that got renamed.

	* gdk/x11/gdkimage-x11.c: implement in terms of GObject, and
	remove the image_put stuff that got transferred to GdkDrawable.

	* gdk/x11/gdkinput.c: renamings

	* gdk/x11/gdkmain-x11.c: #include <pango/pangox.h>

	* gdk/x11/gdkpixmap-x11.c: GObject conversion

	* gdk/x11/gdkprivate-x11.h: indentation fixes

	* gdk/x11/gdkproperty-x11.c: renamings

	* gdk/x11/gdkselection-x11.c: renamings

	* gdk/x11/gdkwindow-x11.c: Restructuring and renaming; this now
	implements the platform-specific "impl" object.
	Moved gdk_window_get_children to gdk/gdkwindow.c

	* gdk/x11/gdkx.h: Remove all the private structs and private datas
	that no longer exist. Add declaration of GdkGCX11 object here.
	Fix all the macros to still work.

	* gtk/gtk-boxed.defs: Remove GtkStyle, GdkColormap, GdkWindow,
	GdkDragContext from the boxed types since they are now GObjects.

	* gtk/gtkstyle.h, gtk/gtkstyle.c: Converted GtkStyle to a GObject,
	moved xthickness/ythickness into the instance. GtkStyleClass
	functions are now in the standard vtable for GtkStyle, so you have
	to create a GObject subclass to write a theme engine.
	(gtk_style_copy): fixed a leaked PangoFontDescription
	(gtk_style_init): renamed gtk_style_realize, so gtk_style_init
	can be the standard GObject function.

	* Throughout GTK:
	s/style->klass->[xy]thickness/style->[xy]thickness
	s/pango_layout_unref/g_object_unref/

	* gtk/gtkrc.h, gtk/gtkrc.c: Converted GtkRcStyle to a GObject.

	* gtk/gtksocket.c: Use gdk_window_get_user_data() instead of
	accessing GDK internals.

	* gtk/gtkwidget.c: Use gdk_window_peek_children() instead of
	accessing GDK internals.
2000-06-20 21:04:44 +00:00

2855 lines
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/* 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 Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-1999. 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 "gdkconfig.h"
#if defined (GDK_WINDOWING_X11)
#include "x11/gdkx.h"
#elif defined (GDK_WINDOWING_WIN32)
#include "win32/gdkwin32.h"
#elif defined(GDK_WINDOWING_FB)
#include "linux-fb/gdkfb.h"
#elif defined (GDK_WINDOWING_NANOX)
#include "nanox/gdkprivate-nanox.h"
#endif
#include "gdk/gdkkeysyms.h"
#include "gtkdnd.h"
#include "gtkinvisible.h"
#include "gtkmain.h"
#include "gtksignal.h"
#include "gtkwindow.h"
static GSList *drag_widgets = NULL;
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 struct _GtkDragFindData GtkDragFindData;
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 */
GdkColormap *colormap; /* Colormap for drag icon */
GdkPixmap *pixmap; /* Icon for drag data */
GdkBitmap *mask;
/* 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 *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; /* motion event waiting for response */
gint start_x, start_y; /* Initial position */
gint cur_x, cur_y; /* Current Position */
GList *selections; /* selections we've claimed */
GtkDragDestInfo *proxy_dest; /* Set if this is a proxy drag */
guint drop_timeout; /* Timeout for aborting drop */
guint destroy_icon : 1; /* If true, destroy icon_window
*/
};
struct _GtkDragDestSite
{
GtkDestDefaults flags;
GtkTargetList *target_list;
GdkDragAction actions;
GdkWindow *proxy_window;
GdkDragProtocol proxy_protocol;
gboolean do_proxy : 1;
gboolean proxy_coords : 1;
gboolean have_drag : 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 */
gboolean dropped : 1; /* Set after we receive a drop */
guint32 proxy_drop_time; /* Timestamp for proxied drop */
gboolean proxy_drop_wait : 1; /* Set if we are waiting for a
* status reply before sending
* a proxied drop on.
*/
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;
};
struct _GtkDragFindData
{
gint x;
gint y;
GdkDragContext *context;
GtkDragDestInfo *info;
gboolean found;
gboolean toplevel;
gboolean (*callback) (GtkWidget *widget, GdkDragContext *context,
gint x, gint y, guint32 time);
guint32 time;
};
/* Enumeration for some targets we handle internally */
enum {
TARGET_MOTIF_SUCCESS = 0x40000000,
TARGET_MOTIF_FAILURE,
TARGET_DELETE
};
/* Drag icons */
static GdkPixmap *default_icon_pixmap = NULL;
static GdkPixmap *default_icon_mask = NULL;
static GdkColormap *default_icon_colormap = NULL;
static gint default_icon_hot_x;
static gint default_icon_hot_y;
/* 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 (GdkDragAction action);
static GtkWidget *gtk_drag_get_ipc_widget (void);
static void gtk_drag_release_ipc_widget (GtkWidget *widget);
static void gtk_drag_highlight_paint (GtkWidget *widget);
static gboolean gtk_drag_highlight_expose (GtkWidget *widget,
GdkEventExpose *event,
gpointer data);
static GdkAtom gtk_drag_dest_find_target (GtkWidget *widget,
GtkDragDestSite *site,
GdkDragContext *context);
static void gtk_drag_selection_received (GtkWidget *widget,
GtkSelectionData *selection_data,
guint32 time,
gpointer data);
static void gtk_drag_find_widget (GtkWidget *widget,
GtkDragFindData *data);
static void gtk_drag_proxy_begin (GtkWidget *widget,
GtkDragDestInfo *dest_info);
static void gtk_drag_dest_info_destroy (gpointer data);
static void gtk_drag_dest_realized (GtkWidget *widget);
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 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,
gboolean success,
guint time);
static gint 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 gint gtk_drag_anim_timeout (gpointer data);
static void gtk_drag_remove_icon (GtkDragSourceInfo *info);
static void gtk_drag_source_info_destroy (gpointer data);
static void gtk_drag_update (GtkDragSourceInfo *info,
gint x_root,
gint y_root,
GdkEvent *event);
static gint gtk_drag_motion_cb (GtkWidget *widget,
GdkEventMotion *event,
gpointer data);
static gint gtk_drag_key_cb (GtkWidget *widget,
GdkEventKey *event,
gpointer data);
static gint gtk_drag_button_release_cb (GtkWidget *widget,
GdkEventButton *event,
gpointer data);
static gint gtk_drag_abort_timeout (gpointer data);
/************************
* Cursor and Icon data *
************************/
#define action_ask_width 16
#define action_ask_height 16
static const guchar action_ask_bits[] = {
0x00, 0x00, 0xfe, 0x7f, 0xfe, 0x1f, 0x06, 0xc0, 0x76, 0xf8, 0xb6, 0xf7,
0xd6, 0xec, 0x66, 0xdb, 0x66, 0xdb, 0x96, 0xec, 0x76, 0xf7, 0x76, 0xfb,
0xf6, 0xfc, 0x72, 0xfb, 0x7a, 0xfb, 0xf8, 0xfc, };
#define action_ask_mask_width 16
#define action_ask_mask_height 16
static const guchar action_ask_mask_bits[] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0x8f, 0x07, 0xcf, 0x0f,
0xef, 0x1f, 0xff, 0x3c, 0xff, 0x3c, 0x6f, 0x1f, 0x8f, 0x0f, 0x8f, 0x07,
0x0f, 0x03, 0x8f, 0x07, 0x87, 0x07, 0x07, 0x03, };
#define action_copy_width 16
#define action_copy_height 16
static const guchar action_copy_bits[] = {
0x00, 0x00, 0xfe, 0x7f, 0xfe, 0x1f, 0x06, 0xc0, 0x76, 0xfb, 0x76, 0xfb,
0x76, 0xfb, 0x06, 0x83, 0xf6, 0xbf, 0xf6, 0xbf, 0x06, 0x83, 0x76, 0xfb,
0x76, 0xfb, 0x72, 0xfb, 0x7a, 0xf8, 0xf8, 0xff, };
#define action_copy_mask_width 16
#define action_copy_mask_height 16
static const guchar action_copy_mask_bits[] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0x8f, 0x07, 0x8f, 0x07,
0x8f, 0x07, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0x8f, 0x07,
0x8f, 0x07, 0x8f, 0x07, 0x87, 0x07, 0x07, 0x00, };
#define action_move_width 16
#define action_move_height 16
static const guchar action_move_bits[] = {
0x00, 0x00, 0xfe, 0x7f, 0xfe, 0x1f, 0x06, 0xc0, 0x96, 0xff, 0x26, 0xff,
0xc6, 0xf8, 0xd6, 0xe3, 0x96, 0x8f, 0xb6, 0xbf, 0x36, 0xc3, 0x76, 0xfb,
0x76, 0xfa, 0xf2, 0xfa, 0xfa, 0xf8, 0xf8, 0xff, };
#define action_move_mask_width 16
#define action_move_mask_height 16
static const guchar action_move_mask_bits[] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0x6f, 0x00, 0xff, 0x00,
0xff, 0x07, 0xef, 0x1f, 0xef, 0x7f, 0xcf, 0x7f, 0xcf, 0x3f, 0x8f, 0x07,
0x8f, 0x07, 0x0f, 0x07, 0x07, 0x07, 0x07, 0x00, };
#define action_link_width 16
#define action_link_height 16
static const guchar action_link_bits[] = {
0x00, 0x00, 0xfe, 0x7f, 0xfe, 0x1f, 0x06, 0xc0, 0x36, 0xf8, 0xd6, 0xf7,
0x66, 0xec, 0xa6, 0xe8, 0x26, 0xdf, 0xe6, 0xbd, 0xd6, 0xa7, 0xb6, 0xa8,
0xb6, 0xb1, 0x72, 0xdf, 0xfa, 0xe0, 0xf8, 0xff, };
#define action_link_mask_width 16
#define action_link_mask_height 16
static const guchar action_link_mask_bits[] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0xcf, 0x07, 0xef, 0x0f,
0xff, 0x1f, 0x7f, 0x1f, 0xff, 0x3f, 0xff, 0x7f, 0xef, 0x7f, 0xcf, 0x77,
0xcf, 0x7f, 0x8f, 0x3f, 0x07, 0x1f, 0x07, 0x00, };
#define action_none_width 16
#define action_none_height 16
static const guchar action_none_bits[] = {
0x00, 0x00, 0xfe, 0x7f, 0xfe, 0x1f, 0x06, 0xc0, 0xf6, 0xff, 0xf6, 0xff,
0xf6, 0xff, 0xf6, 0xff, 0xf6, 0xff, 0xf6, 0xff, 0xf6, 0xff, 0xf6, 0xff,
0xf6, 0xff, 0xf2, 0xff, 0xfa, 0xff, 0xf8, 0xff, };
#define action_none_mask_width 16
#define action_none_mask_height 16
static const guchar action_none_mask_bits[] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x3f, 0x0f, 0x00, 0x0f, 0x00,
0x0f, 0x00, 0x0f, 0x00, 0x0f, 0x00, 0x0f, 0x00, 0x0f, 0x00, 0x0f, 0x00,
0x0f, 0x00, 0x0f, 0x00, 0x07, 0x00, 0x07, 0x00, };
#define CURSOR_WIDTH 16
#define CURSOR_HEIGHT 16
static struct {
GdkDragAction action;
const char *bits;
const char *mask;
GdkCursor *cursor;
} drag_cursors[] = {
{ GDK_ACTION_DEFAULT, 0 },
{ GDK_ACTION_ASK, action_ask_bits, action_ask_mask_bits, NULL },
{ GDK_ACTION_COPY, action_copy_bits, action_copy_mask_bits, NULL },
{ GDK_ACTION_MOVE, action_move_bits, action_move_mask_bits, NULL },
{ GDK_ACTION_LINK, action_link_bits, action_link_mask_bits, NULL },
{ 0 , action_none_bits, action_none_mask_bits, NULL },
};
static const gint n_drag_cursors = sizeof (drag_cursors) / sizeof (drag_cursors[0]);
/* XPM */
static const char *drag_default_xpm[] = {
"32 32 3 1",
" c None",
". c #000000",
"+ c #FFFFFF",
" ",
" ",
" .. ",
" ..+. ",
" ..++.. ",
" ...++++. ",
" ...++++++.. ",
" ...+++++++++. ",
" ...+++++++++++.. ",
" ..+.++++++++++++.. ",
" .++.++++++++++++.. ",
" .+++.++++++++++++.. ",
" .++++.++++++++++++. ",
" .+++.+++++++++++++.. ",
" .++.+++++++++++++++.. ",
" .+.+++++++++++++++++.. ",
" ..+++++++++++++++++++.. ",
" ..++++++++++++++++++++. ",
" .++++++++++++++++++++.. ",
" ..+++++++++++++++++.. ",
" .++++++++++++++++.. ",
" ..+++++++++++++... ",
" .++++++++++++.. ",
" ..+++++++++.. ",
" .++++++++.. ",
" ..++++++.. ",
" .+++++.. ",
" .++.. ",
" ... ",
" .. ",
" ",
" "};
/*********************
* Utility functions *
*********************/
/*************************************************************
* gtk_drag_get_ipc_widget:
* Return a invisible, off-screen, override-redirect
* widget for IPC.
* arguments:
*
* results:
*************************************************************/
static GtkWidget *
gtk_drag_get_ipc_widget (void)
{
GtkWidget *result;
if (drag_widgets)
{
GSList *tmp = drag_widgets;
result = drag_widgets->data;
drag_widgets = drag_widgets->next;
g_slist_free_1 (tmp);
}
else
{
result = gtk_invisible_new ();
gtk_widget_show (result);
}
return result;
}
/***************************************************************
* 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)
{
drag_widgets = g_slist_prepend (drag_widgets, widget);
}
static guint32
gtk_drag_get_event_time (GdkEvent *event)
{
guint32 tm = GDK_CURRENT_TIME;
if (event)
switch (event->type)
{
case GDK_MOTION_NOTIFY:
tm = event->motion.time; break;
case GDK_BUTTON_PRESS:
case GDK_2BUTTON_PRESS:
case GDK_3BUTTON_PRESS:
case GDK_BUTTON_RELEASE:
tm = event->button.time; break;
case GDK_KEY_PRESS:
case GDK_KEY_RELEASE:
tm = event->key.time; break;
case GDK_ENTER_NOTIFY:
case GDK_LEAVE_NOTIFY:
tm = event->crossing.time; break;
case GDK_PROPERTY_NOTIFY:
tm = event->property.time; break;
case GDK_SELECTION_CLEAR:
case GDK_SELECTION_REQUEST:
case GDK_SELECTION_NOTIFY:
tm = event->selection.time; break;
case GDK_PROXIMITY_IN:
case GDK_PROXIMITY_OUT:
tm = event->proximity.time; break;
default: /* use current time */
break;
}
return tm;
}
static void
gtk_drag_get_event_actions (GdkEvent *event,
gint button,
GdkDragAction actions,
GdkDragAction *suggested_action,
GdkDragAction *possible_actions)
{
*suggested_action = 0;
*possible_actions = 0;
if (event)
{
GdkModifierType state = 0;
switch (event->type)
{
case GDK_MOTION_NOTIFY:
state = event->motion.state;
break;
case GDK_BUTTON_PRESS:
case GDK_2BUTTON_PRESS:
case GDK_3BUTTON_PRESS:
case GDK_BUTTON_RELEASE:
state = event->button.state;
break;
case GDK_KEY_PRESS:
case GDK_KEY_RELEASE:
state = event->key.state;
break;
case GDK_ENTER_NOTIFY:
case GDK_LEAVE_NOTIFY:
state = event->crossing.state;
break;
default:
break;
}
if ((button == 2 || button == 3) && (actions & GDK_ACTION_ASK))
{
*suggested_action = GDK_ACTION_ASK;
*possible_actions = actions;
}
else if (state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK))
{
if ((state & GDK_SHIFT_MASK) && (state & GDK_CONTROL_MASK))
{
if (actions & GDK_ACTION_LINK)
{
*suggested_action = GDK_ACTION_LINK;
*possible_actions = GDK_ACTION_LINK;
}
}
else if (state & GDK_CONTROL_MASK)
{
if (actions & GDK_ACTION_COPY)
{
*suggested_action = GDK_ACTION_COPY;
*possible_actions = GDK_ACTION_COPY;
}
return;
}
else
{
if (actions & GDK_ACTION_MOVE)
{
*suggested_action = GDK_ACTION_MOVE;
*possible_actions = GDK_ACTION_MOVE;
}
return;
}
}
else
{
*possible_actions = actions;
if ((state & (GDK_MOD1_MASK)) && (actions & GDK_ACTION_ASK))
*suggested_action = GDK_ACTION_ASK;
else if (actions & GDK_ACTION_COPY)
*suggested_action = GDK_ACTION_COPY;
else if (actions & GDK_ACTION_MOVE)
*suggested_action = GDK_ACTION_MOVE;
else if (actions & GDK_ACTION_LINK)
*suggested_action = GDK_ACTION_LINK;
}
}
else
{
*possible_actions = actions;
if (actions & GDK_ACTION_COPY)
*suggested_action = GDK_ACTION_COPY;
else if (actions & GDK_ACTION_MOVE)
*suggested_action = GDK_ACTION_MOVE;
else if (actions & GDK_ACTION_LINK)
*suggested_action = GDK_ACTION_LINK;
}
return;
}
static GdkCursor *
gtk_drag_get_cursor (GdkDragAction action)
{
gint i;
for (i = 0 ; i < n_drag_cursors - 1; i++)
if (drag_cursors[i].action == action)
break;
if (drag_cursors[i].cursor == NULL)
{
GdkColor fg, bg;
GdkPixmap *pixmap =
gdk_bitmap_create_from_data (NULL,
drag_cursors[i].bits,
CURSOR_WIDTH, CURSOR_HEIGHT);
GdkPixmap *mask =
gdk_bitmap_create_from_data (NULL,
drag_cursors[i].mask,
CURSOR_WIDTH, CURSOR_HEIGHT);
gdk_color_white (gdk_colormap_get_system (), &bg);
gdk_color_black (gdk_colormap_get_system (), &fg);
drag_cursors[i].cursor = gdk_cursor_new_from_pixmap (pixmap, mask, &fg, &bg, 0, 0);
gdk_pixmap_unref (pixmap);
gdk_pixmap_unref (mask);
}
return drag_cursors[i].cursor;
}
/********************
* Destination side *
********************/
/*************************************************************
* gtk_drag_get_data:
* Get the data for a drag or drop
* arguments:
* context - drag context
* target - format to retrieve the data in.
* time - timestamp of triggering event.
*
* results:
*************************************************************/
void
gtk_drag_get_data (GtkWidget *widget,
GdkDragContext *context,
GdkAtom target,
guint32 time)
{
GtkWidget *selection_widget;
g_return_if_fail (widget != NULL);
g_return_if_fail (context != NULL);
selection_widget = gtk_drag_get_ipc_widget ();
gdk_drag_context_ref (context);
gtk_widget_ref (widget);
gtk_signal_connect (GTK_OBJECT (selection_widget), "selection_received",
GTK_SIGNAL_FUNC (gtk_drag_selection_received), widget);
gtk_object_set_data (GTK_OBJECT (selection_widget), "drag-context", context);
gtk_selection_convert (selection_widget,
gdk_drag_get_selection (context),
target,
time);
}
/*************************************************************
* gtk_drag_get_source_widget:
* Get the widget the was the source of this drag, if
* the drag originated from this application.
* arguments:
* context: The drag context for this drag
* results:
* The source widget, or NULL if the drag originated from
* a different application.
*************************************************************/
GtkWidget *
gtk_drag_get_source_widget (GdkDragContext *context)
{
GSList *tmp_list;
tmp_list = source_widgets;
while (tmp_list)
{
GtkWidget *ipc_widget = tmp_list->data;
if (ipc_widget->window == context->source_window)
{
GtkDragSourceInfo *info;
info = gtk_object_get_data (GTK_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 (context != NULL);
if (success && del)
{
target = gdk_atom_intern ("DELETE", FALSE);
}
else if (context->protocol == GDK_DRAG_PROTO_MOTIF)
{
target = gdk_atom_intern (success ?
"XmTRANSFER_SUCCESS" :
"XmTRANSFER_FAILURE",
FALSE);
}
if (target != GDK_NONE)
{
GtkWidget *selection_widget = gtk_drag_get_ipc_widget ();
gdk_drag_context_ref (context);
gtk_object_set_data (GTK_OBJECT (selection_widget), "drag-context", context);
gtk_signal_connect (GTK_OBJECT (selection_widget), "selection_received",
GTK_SIGNAL_FUNC (gtk_drag_selection_received),
NULL);
gtk_selection_convert (selection_widget,
gdk_drag_get_selection (context),
target,
time);
}
if (!del)
gdk_drop_finish (context, success, time);
}
/*************************************************************
* gtk_drag_highlight_paint:
* Paint a highlight indicating drag status onto the widget.
* arguments:
* widget:
* results:
*************************************************************/
static void
gtk_drag_highlight_paint (GtkWidget *widget)
{
gint x, y, width, height;
g_return_if_fail (widget != NULL);
if (GTK_WIDGET_DRAWABLE (widget))
{
if (GTK_WIDGET_NO_WINDOW (widget))
{
x = widget->allocation.x;
y = widget->allocation.y;
width = widget->allocation.width;
height = widget->allocation.height;
}
else
{
x = 0;
y = 0;
gdk_window_get_size (widget->window, &width, &height);
}
gtk_draw_shadow (widget->style, widget->window,
GTK_STATE_NORMAL, GTK_SHADOW_OUT,
x, y, width, height);
gdk_draw_rectangle (widget->window,
widget->style->black_gc,
FALSE,
x, y, width - 1, height - 1);
}
}
/*************************************************************
* 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)
{
gtk_drag_highlight_paint (widget);
return TRUE;
}
/*************************************************************
* gtk_drag_highlight:
* Highlight the given widget in the default manner.
* arguments:
* widget:
* results:
*************************************************************/
void
gtk_drag_highlight (GtkWidget *widget)
{
gtk_signal_connect_after (GTK_OBJECT (widget), "draw",
GTK_SIGNAL_FUNC (gtk_drag_highlight_paint),
NULL);
gtk_signal_connect (GTK_OBJECT (widget), "expose_event",
GTK_SIGNAL_FUNC (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 (widget != NULL);
gtk_signal_disconnect_by_func (GTK_OBJECT (widget),
GTK_SIGNAL_FUNC (gtk_drag_highlight_paint),
NULL);
gtk_signal_disconnect_by_func (GTK_OBJECT (widget),
GTK_SIGNAL_FUNC (gtk_drag_highlight_expose),
NULL);
gtk_widget_queue_clear (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 = gtk_object_get_data (GTK_OBJECT (widget), "gtk-drag-dest");
if (old_site)
gtk_signal_disconnect_by_data (GTK_OBJECT (widget), old_site);
if (GTK_WIDGET_REALIZED (widget))
gtk_drag_dest_realized (widget);
gtk_signal_connect (GTK_OBJECT (widget), "realize",
GTK_SIGNAL_FUNC (gtk_drag_dest_realized), site);
gtk_object_set_data_full (GTK_OBJECT (widget), "gtk-drag-dest",
site, gtk_drag_dest_site_destroy);
}
/*************************************************************
* gtk_drag_dest_set:
* Register a drop site, and possibly add default behaviors.
* arguments:
* widget:
* flags: Which types of default drag behavior to use
* targets: Table of targets that can be accepted
* n_targets: Number of of entries in targets
* actions:
* results:
*************************************************************/
void
gtk_drag_dest_set (GtkWidget *widget,
GtkDestDefaults flags,
const GtkTargetEntry *targets,
gint n_targets,
GdkDragAction actions)
{
GtkDragDestSite *site;
g_return_if_fail (widget != NULL);
site = g_new (GtkDragDestSite, 1);
site->flags = flags;
site->have_drag = FALSE;
if (targets)
site->target_list = gtk_target_list_new (targets, n_targets);
else
site->target_list = NULL;
site->actions = actions;
site->do_proxy = FALSE;
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 (widget != NULL);
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)
gdk_window_ref (proxy_window);
site->do_proxy = TRUE;
site->proxy_protocol = protocol;
site->proxy_coords = use_coordinates;
gtk_drag_dest_set_internal (widget, site);
}
/*************************************************************
* gtk_drag_dest_unset
* Unregister this widget as a drag target.
* arguments:
* widget:
* results:
*************************************************************/
void
gtk_drag_dest_unset (GtkWidget *widget)
{
g_return_if_fail (widget != NULL);
gtk_object_set_data (GTK_OBJECT (widget), "gtk-drag-dest", NULL);
}
/*************************************************************
* 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 = g_dataset_get_data (context, "gtk-info");
if (!info)
{
info = g_new (GtkDragDestInfo, 1);
info->widget = NULL;
info->context = event->dnd.context;
info->proxy_source = NULL;
info->proxy_data = NULL;
info->dropped = FALSE;
info->proxy_drop_wait = FALSE;
g_object_set_qdata_full (G_OBJECT (context),
g_quark_from_static_string ("gtk-info"),
info,
gtk_drag_dest_info_destroy);
}
/* Find the widget for the event */
switch (event->type)
{
case GDK_DRAG_ENTER:
break;
case GDK_DRAG_LEAVE:
if (info->widget)
{
gtk_drag_dest_leave (info->widget, context, event->dnd.time);
info->widget = NULL;
}
break;
case GDK_DRAG_MOTION:
case GDK_DROP_START:
{
GtkDragFindData data;
gint tx, ty;
if (event->type == GDK_DROP_START)
{
info->dropped = TRUE;
/* We send a leave here so that the widget unhighlights
* properly.
*/
if (info->widget)
{
gtk_drag_dest_leave (info->widget, context, event->dnd.time);
info->widget = NULL;
}
}
gdk_window_get_origin (toplevel->window, &tx, &ty);
data.x = event->dnd.x_root - tx;
data.y = event->dnd.y_root - ty;
data.context = context;
data.info = info;
data.found = FALSE;
data.toplevel = TRUE;
data.callback = (event->type == GDK_DRAG_MOTION) ?
gtk_drag_dest_motion : gtk_drag_dest_drop;
data.time = event->dnd.time;
gtk_drag_find_widget (toplevel, &data);
if (info->widget && !data.found)
{
gtk_drag_dest_leave (info->widget, context, event->dnd.time);
info->widget = NULL;
}
/* Send a reply.
*/
if (event->type == GDK_DRAG_MOTION)
{
if (!data.found)
gdk_drag_status (context, 0, event->dnd.time);
}
else if (event->type == GDK_DROP_START && !info->proxy_source)
{
gdk_drop_reply (context, data.found, event->dnd.time);
if ((context->protocol == GDK_DRAG_PROTO_MOTIF) && !data.found)
gtk_drag_finish (context, FALSE, FALSE, event->dnd.time);
}
}
break;
default:
g_assert_not_reached ();
}
}
/*************************************************************
* gtk_drag_dest_find_target:
* Decide on a target for the drag.
* arguments:
* site:
* context:
* results:
*************************************************************/
static GdkAtom
gtk_drag_dest_find_target (GtkWidget *widget,
GtkDragDestSite *site,
GdkDragContext *context)
{
GList *tmp_target;
GList *tmp_source = NULL;
GtkWidget *source_widget = gtk_drag_get_source_widget (context);
tmp_target = site->target_list->list;
while (tmp_target)
{
GtkTargetPair *pair = tmp_target->data;
tmp_source = context->targets;
while (tmp_source)
{
if (tmp_source->data == GUINT_TO_POINTER (pair->target))
{
if ((!(pair->flags & GTK_TARGET_SAME_APP) || source_widget) &&
(!(pair->flags & GTK_TARGET_SAME_WIDGET) || (source_widget == widget)))
return pair->target;
else
break;
}
tmp_source = tmp_source->next;
}
tmp_target = tmp_target->next;
}
return GDK_NONE;
}
static void
gtk_drag_selection_received (GtkWidget *widget,
GtkSelectionData *selection_data,
guint32 time,
gpointer data)
{
GdkDragContext *context;
GtkDragDestInfo *info;
GtkWidget *drop_widget;
drop_widget = data;
context = gtk_object_get_data (GTK_OBJECT (widget), "drag-context");
info = g_object_get_qdata (G_OBJECT (context), g_quark_from_static_string ("gtk-info"));
if (info->proxy_data &&
info->proxy_data->target == selection_data->target)
{
gtk_selection_data_set (info->proxy_data,
selection_data->type,
selection_data->format,
selection_data->data,
selection_data->length);
gtk_main_quit ();
return;
}
if (selection_data->target == gdk_atom_intern ("DELETE", FALSE))
{
gtk_drag_finish (context, TRUE, FALSE, time);
}
else if ((selection_data->target == gdk_atom_intern ("XmTRANSFER_SUCCESS", FALSE)) ||
(selection_data->target == gdk_atom_intern ("XmTRANSFER_FAILURE", FALSE)))
{
/* Do nothing */
}
else
{
GtkDragDestSite *site;
site = gtk_object_get_data (GTK_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)
gtk_signal_emit_by_name (GTK_OBJECT (drop_widget),
"drag_data_received",
context, info->drop_x, info->drop_y,
selection_data,
target_info, time);
}
}
else
{
gtk_signal_emit_by_name (GTK_OBJECT (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);
}
gtk_widget_unref (drop_widget);
}
gtk_signal_disconnect_by_func (GTK_OBJECT (widget),
GTK_SIGNAL_FUNC (gtk_drag_selection_received),
data);
gtk_object_set_data (GTK_OBJECT (widget), "drag-context", NULL);
gdk_drag_context_unref (context);
gtk_drag_release_ipc_widget (widget);
}
/*************************************************************
* gtk_drag_find_widget:
* Recursive callback used to locate widgets for
* DRAG_MOTION and DROP_START events.
* arguments:
*
* results:
*************************************************************/
static void
gtk_drag_find_widget (GtkWidget *widget,
GtkDragFindData *data)
{
GtkAllocation new_allocation;
gint x_offset = 0;
gint y_offset = 0;
new_allocation = widget->allocation;
if (data->found || !GTK_WIDGET_MAPPED (widget))
return;
/* Note that in the following code, we only count the
* position as being inside a WINDOW widget if it is inside
* widget->window; points that are outside of widget->window
* but within the allocation are not counted. This is consistent
* with the way we highlight drag targets.
*/
if (!GTK_WIDGET_NO_WINDOW (widget))
{
new_allocation.x = 0;
new_allocation.y = 0;
}
if (widget->parent)
{
GdkWindow *window = widget->window;
while (window != widget->parent->window)
{
gint tx, ty, twidth, theight;
gdk_window_get_size (window, &twidth, &theight);
if (new_allocation.x < 0)
{
new_allocation.width += new_allocation.x;
new_allocation.x = 0;
}
if (new_allocation.y < 0)
{
new_allocation.height += new_allocation.y;
new_allocation.y = 0;
}
if (new_allocation.x + new_allocation.width > twidth)
new_allocation.width = twidth - new_allocation.x;
if (new_allocation.y + new_allocation.height > theight)
new_allocation.height = theight - new_allocation.y;
gdk_window_get_position (window, &tx, &ty);
new_allocation.x += tx;
x_offset += tx;
new_allocation.y += ty;
y_offset += ty;
window = gdk_window_get_parent (window);
}
}
if (data->toplevel ||
((data->x >= new_allocation.x) && (data->y >= new_allocation.y) &&
(data->x < new_allocation.x + new_allocation.width) &&
(data->y < new_allocation.y + new_allocation.height)))
{
/* First, check if the drag is in a valid drop site in
* one of our children
*/
if (GTK_IS_CONTAINER (widget))
{
GtkDragFindData new_data = *data;
new_data.x -= x_offset;
new_data.y -= y_offset;
new_data.found = FALSE;
new_data.toplevel = FALSE;
gtk_container_forall (GTK_CONTAINER (widget),
(GtkCallback)gtk_drag_find_widget,
&new_data);
data->found = new_data.found;
}
/* If not, and this widget is registered as a drop site, check to
* emit "drag_motion" to check if we are actually in
* a drop site.
*/
if (!data->found &&
gtk_object_get_data (GTK_OBJECT (widget), "gtk-drag-dest"))
{
data->found = data->callback (widget,
data->context,
data->x - new_allocation.x,
data->y - new_allocation.y,
data->time);
/* If so, send a "drag_leave" to the last widget */
if (data->found)
{
if (data->info->widget && data->info->widget != widget)
{
gtk_drag_dest_leave (data->info->widget, data->context, data->time);
}
data->info->widget = widget;
}
}
}
}
static void
gtk_drag_proxy_begin (GtkWidget *widget,
GtkDragDestInfo *dest_info)
{
GtkDragSourceInfo *source_info;
GList *tmp_list;
source_info = g_new0 (GtkDragSourceInfo, 1);
source_info->ipc_widget = gtk_drag_get_ipc_widget ();
source_info->widget = widget;
gtk_widget_ref (source_info->widget);
source_info->context = gdk_drag_begin (source_info->ipc_widget->window,
dest_info->context->targets);
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,
GPOINTER_TO_UINT (tmp_list->data), 0, 0);
tmp_list = tmp_list->next;
}
source_info->proxy_dest = dest_info;
g_object_set_qdata (G_OBJECT (source_info->context),
g_quark_from_static_string ("gtk-info"),
source_info);
gtk_signal_connect (GTK_OBJECT (source_info->ipc_widget),
"selection_get",
GTK_SIGNAL_FUNC (gtk_drag_selection_get),
source_info);
dest_info->proxy_source = source_info;
}
static void
gtk_drag_dest_info_destroy (gpointer data)
{
GtkDragDestInfo *info = data;
g_free (info);
}
static void
gtk_drag_dest_realized (GtkWidget *widget)
{
GtkWidget *toplevel = gtk_widget_get_toplevel (widget);
gdk_window_register_dnd (toplevel->window);
}
static void
gtk_drag_dest_site_destroy (gpointer data)
{
GtkDragDestSite *site = data;
if (site->target_list)
gtk_target_list_unref (site->target_list);
g_free (site);
}
/*
* Default drag handlers
*/
static void
gtk_drag_dest_leave (GtkWidget *widget,
GdkDragContext *context,
guint time)
{
GtkDragDestSite *site;
site = gtk_object_get_data (GTK_OBJECT (widget), "gtk-drag-dest");
g_return_if_fail (site != NULL);
if (site->do_proxy)
{
GtkDragDestInfo *info = g_object_get_qdata (G_OBJECT (context),
g_quark_from_static_string ("gtk-info"));
if (info->proxy_source && !info->dropped)
gdk_drag_abort (info->proxy_source->context, time);
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)
gtk_signal_emit_by_name (GTK_OBJECT (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 = gtk_object_get_data (GTK_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 = g_object_get_qdata (G_OBJECT (context),
g_quark_from_static_string ("gtk-info"));
if (!info->proxy_source)
gtk_drag_proxy_begin (widget, info);
current_event = gtk_get_current_event ();
if (site->proxy_window)
{
dest_window = site->proxy_window;
proto = site->proxy_protocol;
}
else
{
gdk_drag_find_window (info->proxy_source->context,
NULL,
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)
gdk_window_unref (dest_window);
selection = gdk_drag_get_selection (info->proxy_source->context);
if (selection &&
selection != gdk_drag_get_selection (info->context))
gtk_drag_source_check_selection (info->proxy_source, selection, time);
gdk_event_free (current_event);
return TRUE;
}
if (site->flags & GTK_DEST_DEFAULT_MOTION)
{
if (context->suggested_action & site->actions)
action = context->suggested_action;
else
{
gint i;
for (i=0; i<8; i++)
{
if ((site->actions & (1 << i)) &&
(context->actions & (1 << i)))
{
action = (1 << i);
break;
}
}
}
if (action && gtk_drag_dest_find_target (widget, site, context))
{
if (!site->have_drag)
{
site->have_drag = TRUE;
if (site->flags & GTK_DEST_DEFAULT_HIGHLIGHT)
gtk_drag_highlight (widget);
}
gdk_drag_status (context, action, time);
}
else
{
gdk_drag_status (context, 0, time);
return TRUE;
}
}
gtk_signal_emit_by_name (GTK_OBJECT (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 = gtk_object_get_data (GTK_OBJECT (widget), "gtk-drag-dest");
g_return_val_if_fail (site != NULL, FALSE);
info = g_object_get_qdata (G_OBJECT (context),
g_quark_from_static_string ("gtk-info"));
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);
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 (info->proxy_source->context,
NULL,
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)
gdk_window_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, site, context);
if (target == GDK_NONE)
return FALSE;
gtk_drag_get_data (widget, context, target, time);
}
gtk_signal_emit_by_name (GTK_OBJECT (widget), "drag_drop",
context, x, y, time, &retval);
return (site->flags & GTK_DEST_DEFAULT_DROP) ? TRUE : retval;
}
}
/***************
* Source side *
***************/
/*************************************************************
* gtk_drag_begin: Start a drag operation
*
* arguments:
* widget: Widget from which drag starts
* handlers: List of handlers to supply the data for the drag
* button: Button user used to start drag
* time: Time of event starting drag
*
* results:
*************************************************************/
GdkDragContext *
gtk_drag_begin (GtkWidget *widget,
GtkTargetList *target_list,
GdkDragAction actions,
gint button,
GdkEvent *event)
{
GtkDragSourceInfo *info;
GList *targets = NULL;
GList *tmp_list;
guint32 time = GDK_CURRENT_TIME;
GdkDragAction possible_actions, suggested_action;
g_return_val_if_fail (widget != NULL, NULL);
g_return_val_if_fail (GTK_WIDGET_REALIZED (widget), NULL);
g_return_val_if_fail (target_list != NULL, NULL);
if (event)
time = gdk_event_get_time (event);
info = g_new0 (GtkDragSourceInfo, 1);
info->ipc_widget = gtk_drag_get_ipc_widget ();
source_widgets = g_slist_prepend (source_widgets, info->ipc_widget);
gtk_object_set_data (GTK_OBJECT (info->ipc_widget), "gtk-info", info);
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;
}
info->widget = widget;
gtk_widget_ref (info->widget);
info->context = gdk_drag_begin (info->ipc_widget->window, targets);
g_list_free (targets);
g_object_set_qdata (G_OBJECT (info->context),
g_quark_from_static_string ("gtk-info"), info);
info->button = button;
info->target_list = target_list;
gtk_target_list_ref (target_list);
info->possible_actions = actions;
info->cursor = NULL;
info->status = GTK_DRAG_STATUS_DRAG;
info->last_event = NULL;
info->selections = NULL;
info->icon_window = NULL;
info->destroy_icon = FALSE;
gtk_drag_get_event_actions (event, info->button, actions,
&suggested_action, &possible_actions);
info->cursor = gtk_drag_get_cursor (suggested_action);
/* Set cur_x, cur_y here so if the "drag_begin" signal shows
* the drag icon, it will be in the right place
*/
if (event && event->type == GDK_MOTION_NOTIFY)
{
info->cur_x = event->motion.x_root;
info->cur_y = event->motion.y_root;
}
else
{
gint x, y;
gdk_window_get_pointer (GDK_ROOT_PARENT (), &x, &y, NULL);
info->cur_x = x;
info->cur_y = y;
}
gtk_signal_emit_by_name (GTK_OBJECT (widget), "drag_begin",
info->context);
if (event && event->type == GDK_MOTION_NOTIFY)
gtk_drag_motion_cb (info->ipc_widget, (GdkEventMotion *)event, info);
info->start_x = info->cur_x;
info->start_y = info->cur_y;
gtk_signal_connect (GTK_OBJECT (info->ipc_widget), "button_release_event",
GTK_SIGNAL_FUNC (gtk_drag_button_release_cb), info);
gtk_signal_connect (GTK_OBJECT (info->ipc_widget), "motion_notify_event",
GTK_SIGNAL_FUNC (gtk_drag_motion_cb), info);
gtk_signal_connect (GTK_OBJECT (info->ipc_widget), "key_press_event",
GTK_SIGNAL_FUNC (gtk_drag_key_cb), info);
gtk_signal_connect (GTK_OBJECT (info->ipc_widget), "key_release_event",
GTK_SIGNAL_FUNC (gtk_drag_key_cb), info);
gtk_signal_connect (GTK_OBJECT (info->ipc_widget), "selection_get",
GTK_SIGNAL_FUNC (gtk_drag_selection_get), info);
/* We use a GTK grab here to override any grabs that the widget
* we are dragging from might have held
*/
gtk_grab_add (info->ipc_widget);
if (gdk_pointer_grab (info->ipc_widget->window, FALSE,
GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON_RELEASE_MASK, NULL,
info->cursor, time) == 0)
{
if (gdk_keyboard_grab (info->ipc_widget->window, FALSE, time) != 0)
{
/* FIXME: This should be cleaned up... */
GdkEventButton ev;
ev.time = time;
ev.type = GDK_BUTTON_RELEASE;
ev.button = info->button;
gtk_drag_button_release_cb (widget, &ev, info);
return NULL;
}
}
return info->context;
}
/*************************************************************
* gtk_drag_source_set:
* Register a drop site, and possibly add default behaviors.
* arguments:
* widget:
* start_button_mask: Mask of allowed buttons to start drag
* targets: Table of targets for this source
* n_targets:
* actions: Actions allowed for this source
* results:
*************************************************************/
void
gtk_drag_source_set (GtkWidget *widget,
GdkModifierType start_button_mask,
const GtkTargetEntry *targets,
gint n_targets,
GdkDragAction actions)
{
GtkDragSourceSite *site;
g_return_if_fail (widget != NULL);
site = gtk_object_get_data (GTK_OBJECT (widget), "gtk-site-data");
gtk_widget_add_events (widget,
gtk_widget_get_events (widget) |
GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
GDK_BUTTON_MOTION_MASK);
if (site)
{
if (site->target_list)
gtk_target_list_unref (site->target_list);
}
else
{
site = g_new0 (GtkDragSourceSite, 1);
gtk_signal_connect (GTK_OBJECT (widget), "button_press_event",
GTK_SIGNAL_FUNC (gtk_drag_source_event_cb),
site);
gtk_signal_connect (GTK_OBJECT (widget), "motion_notify_event",
GTK_SIGNAL_FUNC (gtk_drag_source_event_cb),
site);
gtk_object_set_data_full (GTK_OBJECT (widget),
"gtk-site-data",
site, gtk_drag_source_site_destroy);
}
site->start_button_mask = start_button_mask;
if (targets)
site->target_list = gtk_target_list_new (targets, n_targets);
else
site->target_list = NULL;
site->actions = actions;
}
/*************************************************************
* gtk_drag_source_unset
* Unregister this widget as a drag source.
* arguments:
* widget:
* results:
*************************************************************/
void
gtk_drag_source_unset (GtkWidget *widget)
{
GtkDragSourceSite *site;
g_return_if_fail (widget != NULL);
site = gtk_object_get_data (GTK_OBJECT (widget), "gtk-site-data");
if (site)
{
gtk_signal_disconnect_by_data (GTK_OBJECT (widget), site);
gtk_object_set_data (GTK_OBJECT (widget), "gtk-site-data", NULL);
}
}
/*************************************************************
* gtk_drag_source_set_icon:
* Set an icon for drags from this source.
* arguments:
* colormap: Colormap for this icon
* pixmap:
* mask
* results:
*************************************************************/
void
gtk_drag_source_set_icon (GtkWidget *widget,
GdkColormap *colormap,
GdkPixmap *pixmap,
GdkBitmap *mask)
{
GtkDragSourceSite *site;
g_return_if_fail (widget != NULL);
site = gtk_object_get_data (GTK_OBJECT (widget), "gtk-site-data");
g_return_if_fail (site != NULL);
if (site->colormap)
gdk_colormap_unref (site->colormap);
if (site->pixmap)
gdk_pixmap_unref (site->pixmap);
if (site->mask)
gdk_pixmap_unref (site->mask);
site->colormap = colormap;
if (colormap)
gdk_colormap_ref (colormap);
site->pixmap = pixmap;
if (pixmap)
gdk_pixmap_ref (pixmap);
site->mask = mask;
if (mask)
gdk_pixmap_ref (mask);
}
/*************************************************************
* gtk_drag_set_icon_window:
* Set a widget as the icon for a drag.
* arguments:
* context:
* widget:
* hot_x: Hot spot
* hot_y:
* results:
*************************************************************/
static void
gtk_drag_set_icon_window (GdkDragContext *context,
GtkWidget *widget,
gint hot_x,
gint hot_y,
gboolean destroy_on_release)
{
GtkDragSourceInfo *info;
g_return_if_fail (context != NULL);
g_return_if_fail (widget != NULL);
info = g_object_get_qdata (G_OBJECT (context),
g_quark_from_static_string ("gtk-info"));
gtk_drag_remove_icon (info);
info->icon_window = widget;
info->hot_x = hot_x;
info->hot_y = hot_y;
if (widget)
{
gtk_widget_set_uposition (widget,
info->cur_x - info->hot_x,
info->cur_y - info->hot_y);
gtk_widget_ref (widget);
gdk_window_raise (widget->window);
gtk_widget_show (widget);
}
info->destroy_icon = destroy_on_release;
}
/*************************************************************
* gtk_drag_set_icon_widget:
* Set a widget as the icon for a drag.
* arguments:
* context:
* widget:
* hot_x: Hot spot
* hot_y:
* results:
*************************************************************/
void
gtk_drag_set_icon_widget (GdkDragContext *context,
GtkWidget *widget,
gint hot_x,
gint hot_y)
{
g_return_if_fail (context != NULL);
g_return_if_fail (widget != NULL);
gtk_drag_set_icon_window (context, widget, hot_x, hot_y, FALSE);
}
/*************************************************************
* gtk_drag_set_icon_pixmap:
* Set a widget as the icon for a drag.
* arguments:
* context:
* colormap: Colormap for the icon window.
* pixmap:
* mask:
* hot_x: Hot spot
* hot_y:
* results:
*************************************************************/
void
gtk_drag_set_icon_pixmap (GdkDragContext *context,
GdkColormap *colormap,
GdkPixmap *pixmap,
GdkBitmap *mask,
gint hot_x,
gint hot_y)
{
GtkWidget *window;
gint width, height;
g_return_if_fail (context != NULL);
g_return_if_fail (colormap != NULL);
g_return_if_fail (pixmap != NULL);
gdk_window_get_size (pixmap, &width, &height);
gtk_widget_push_visual (gdk_colormap_get_visual (colormap));
gtk_widget_push_colormap (colormap);
window = gtk_window_new (GTK_WINDOW_POPUP);
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_visual ();
gtk_widget_pop_colormap ();
gtk_widget_set_usize (window, width, height);
gtk_widget_realize (window);
gdk_window_set_back_pixmap (window->window, pixmap, FALSE);
if (mask)
gtk_widget_shape_combine_mask (window, mask, 0, 0);
gtk_drag_set_icon_window (context, window, hot_x, hot_y, TRUE);
}
/*************************************************************
* gtk_drag_set_icon_default:
* Set the icon for a drag to the default icon.
* arguments:
* context:
* results:
*************************************************************/
void
gtk_drag_set_icon_default (GdkDragContext *context)
{
g_return_if_fail (context != NULL);
if (!default_icon_pixmap)
{
default_icon_colormap = gdk_colormap_get_system ();
default_icon_pixmap =
gdk_pixmap_colormap_create_from_xpm_d (NULL,
default_icon_colormap,
&default_icon_mask,
NULL, (gchar **)drag_default_xpm);
default_icon_hot_x = -2;
default_icon_hot_y = -2;
}
gtk_drag_set_icon_pixmap (context,
default_icon_colormap,
default_icon_pixmap,
default_icon_mask,
default_icon_hot_x,
default_icon_hot_y);
}
/*************************************************************
* gtk_drag_set_default_icon:
* Set a default icon for all drags as a pixmap.
* arguments:
* colormap: Colormap for the icon window.
* pixmap:
* mask:
* hot_x: Hot spot
* hot_y:
* results:
*************************************************************/
void
gtk_drag_set_default_icon (GdkColormap *colormap,
GdkPixmap *pixmap,
GdkBitmap *mask,
gint hot_x,
gint hot_y)
{
g_return_if_fail (colormap != NULL);
g_return_if_fail (pixmap != NULL);
if (default_icon_colormap)
gdk_colormap_unref (default_icon_colormap);
if (default_icon_pixmap)
gdk_pixmap_unref (default_icon_pixmap);
if (default_icon_mask)
gdk_pixmap_unref (default_icon_mask);
default_icon_colormap = colormap;
gdk_colormap_ref (colormap);
default_icon_pixmap = pixmap;
gdk_pixmap_ref (pixmap);
default_icon_mask = mask;
if (mask)
gdk_pixmap_ref (mask);
default_icon_hot_x = hot_x;
default_icon_hot_y = hot_y;
}
/*************************************************************
* gtk_drag_source_handle_event:
* Called from widget event handling code on Drag events
* for drag sources.
*
* arguments:
* toplevel: Toplevel widget that received the event
* event:
* results:
*************************************************************/
void
gtk_drag_source_handle_event (GtkWidget *widget,
GdkEvent *event)
{
GtkDragSourceInfo *info;
GdkDragContext *context;
g_return_if_fail (widget != NULL);
g_return_if_fail (event != NULL);
context = event->dnd.context;
info = g_object_get_qdata (G_OBJECT (context),
g_quark_from_static_string ("gtk-info"));
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
{
cursor = gtk_drag_get_cursor (event->dnd.context->action);
if (info->cursor != cursor)
{
#ifdef GDK_WINDOWING_X11
XChangeActivePointerGrab (GDK_WINDOW_XDISPLAY (widget->window),
PointerMotionMask | PointerMotionHintMask | ButtonReleaseMask,
((GdkCursorPrivate *)cursor)->xcursor,
event->dnd.time);
#elif defined (GDK_WINDOWING_WIN32)
gdk_pointer_grab (widget->window, FALSE,
GDK_POINTER_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON_RELEASE_MASK,
NULL,
info->cursor, event->dnd.time);
#endif
info->cursor = cursor;
}
if (info->last_event)
{
gtk_drag_update (info,
info->cur_x, info->cur_y,
info->last_event);
info->last_event = NULL;
}
}
}
break;
case GDK_DROP_FINISHED:
gtk_drag_drop_finished (info, TRUE, event->dnd.time);
break;
default:
g_assert_not_reached ();
}
}
/*************************************************************
* gtk_drag_source_check_selection:
* Check if we've set up handlers/claimed the selection
* for a given drag. If not, add them.
* arguments:
*
* results:
*************************************************************/
static void
gtk_drag_source_check_selection (GtkDragSourceInfo *info,
GdkAtom selection,
guint32 time)
{
GList *tmp_list;
tmp_list = info->selections;
while (tmp_list)
{
if (GPOINTER_TO_UINT (tmp_list->data) == selection)
return;
tmp_list = tmp_list->next;
}
gtk_selection_owner_set (info->ipc_widget, selection, time);
info->selections = g_list_prepend (info->selections,
GUINT_TO_POINTER (selection));
tmp_list = info->target_list->list;
while (tmp_list)
{
GtkTargetPair *pair = tmp_list->data;
gtk_selection_add_target (info->ipc_widget,
selection,
pair->target,
pair->info);
tmp_list = tmp_list->next;
}
if (info->context->protocol == GDK_DRAG_PROTO_MOTIF)
{
gtk_selection_add_target (info->ipc_widget,
selection,
gdk_atom_intern ("XmTRANSFER_SUCCESS", FALSE),
TARGET_MOTIF_SUCCESS);
gtk_selection_add_target (info->ipc_widget,
selection,
gdk_atom_intern ("XmTRANSFER_FAILURE", FALSE),
TARGET_MOTIF_FAILURE);
}
gtk_selection_add_target (info->ipc_widget,
selection,
gdk_atom_intern ("DELETE", FALSE),
TARGET_DELETE);
}
/*************************************************************
* gtk_drag_drop_finished:
* Clean up from the drag, and display snapback, if necessary.
* arguments:
* info:
* success:
* time:
* results:
*************************************************************/
static void
gtk_drag_drop_finished (GtkDragSourceInfo *info,
gboolean success,
guint time)
{
gtk_drag_source_release_selections (info, time);
if (info->proxy_dest)
{
/* The time from the event isn't reliable for Xdnd drags */
gtk_drag_finish (info->proxy_dest->context, success, FALSE,
info->proxy_dest->proxy_drop_time);
gtk_drag_source_info_destroy (info);
}
else
{
if (success)
{
gtk_drag_source_info_destroy (info);
}
else
{
GtkDragAnim *anim = g_new (GtkDragAnim, 1);
anim->info = info;
anim->step = 0;
anim->n_steps = MAX (info->cur_x - info->start_x,
info->cur_y - info->start_y) / ANIM_STEP_LENGTH;
anim->n_steps = CLAMP (anim->n_steps, ANIM_MIN_STEPS, ANIM_MAX_STEPS);
if (info->icon_window)
{
gtk_widget_show (info->icon_window);
gdk_window_raise (info->icon_window->window);
}
/* Mark the context as dead, so if the destination decides
* to respond really late, we still are OK.
*/
g_object_set_qdata (G_OBJECT (info->context),
g_quark_from_static_string ("gtk-info"), NULL);
gtk_timeout_add (ANIM_STEP_TIME, gtk_drag_anim_timeout, anim);
}
}
}
static void
gtk_drag_source_release_selections (GtkDragSourceInfo *info,
guint32 time)
{
GList *tmp_list = info->selections;
while (tmp_list)
{
GdkAtom selection = GPOINTER_TO_UINT (tmp_list->data);
if (gdk_selection_owner_get (selection) == info->ipc_widget->window)
gtk_selection_owner_set (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;
GdkAtom target = gdk_atom_intern ("application/x-rootwin-drop", FALSE);
tmp_list = info->target_list->list;
while (tmp_list)
{
GtkTargetPair *pair = tmp_list->data;
if (pair->target == target)
{
selection_data.selection = GDK_NONE;
selection_data.target = target;
selection_data.data = NULL;
selection_data.length = -1;
gtk_signal_emit_by_name (GTK_OBJECT (info->widget), "drag_data_get",
info->context, &selection_data,
pair->info,
time);
/* FIXME: Should we check for length >= 0 here? */
gtk_drag_drop_finished (info, TRUE, time);
return;
}
tmp_list = tmp_list->next;
}
gtk_drag_drop_finished (info, FALSE, time);
}
else
{
if (info->icon_window)
gtk_widget_hide (info->icon_window);
gdk_drag_drop (info->context, time);
info->drop_timeout = gtk_timeout_add (DROP_ABORT_TIME,
gtk_drag_abort_timeout,
info);
}
}
/*
* Source side callbacks.
*/
static gint
gtk_drag_source_event_cb (GtkWidget *widget,
GdkEvent *event,
gpointer data)
{
GtkDragSourceSite *site;
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 (MAX (ABS (site->x - event->motion.x),
ABS (site->y - event->motion.y)) > 3)
{
GtkDragSourceInfo *info;
GdkDragContext *context;
site->state = 0;
context = gtk_drag_begin (widget, site->target_list,
site->actions,
i, event);
info = g_object_get_qdata (G_OBJECT (context),
g_quark_from_static_string ("gtk-info"));
if (!info->icon_window)
{
if (site->pixmap)
gtk_drag_set_icon_pixmap (context,
site->colormap,
site->pixmap,
site->mask, -2, -2);
else
gtk_drag_set_icon_default (context);
}
return TRUE;
}
}
break;
default: /* hit for 2/3BUTTON_PRESS */
break;
}
return FALSE;
}
static void
gtk_drag_source_site_destroy (gpointer data)
{
GtkDragSourceSite *site = data;
if (site->target_list)
gtk_target_list_unref (site->target_list);
if (site->pixmap)
gdk_pixmap_unref (site->pixmap);
if (site->mask)
gdk_pixmap_unref (site->mask);
g_free (site);
}
static void
gtk_drag_selection_get (GtkWidget *widget,
GtkSelectionData *selection_data,
guint sel_info,
guint32 time,
gpointer data)
{
GtkDragSourceInfo *info = data;
static GdkAtom null_atom = GDK_NONE;
guint target_info;
if (!null_atom)
null_atom = gdk_atom_intern ("NULL", FALSE);
switch (sel_info)
{
case TARGET_DELETE:
gtk_signal_emit_by_name (GTK_OBJECT (info->widget),
"drag_data_delete",
info->context);
gtk_selection_data_set (selection_data, null_atom, 8, NULL, 0);
break;
case TARGET_MOTIF_SUCCESS:
gtk_drag_drop_finished (info, TRUE, time);
gtk_selection_data_set (selection_data, null_atom, 8, NULL, 0);
break;
case TARGET_MOTIF_FAILURE:
gtk_drag_drop_finished (info, FALSE, time);
gtk_selection_data_set (selection_data, null_atom, 8, NULL, 0);
break;
default:
if (info->proxy_dest)
{
/* This is sort of dangerous and needs to be thought
* through better
*/
info->proxy_dest->proxy_data = selection_data;
gtk_drag_get_data (info->widget,
info->proxy_dest->context,
selection_data->target,
time);
gtk_main ();
info->proxy_dest->proxy_data = NULL;
}
else
{
if (gtk_target_list_find (info->target_list,
selection_data->target,
&target_info))
{
gtk_signal_emit_by_name (GTK_OBJECT (info->widget), "drag_data_get",
info->context,
selection_data,
target_info,
time);
}
}
break;
}
}
static gint
gtk_drag_anim_timeout (gpointer data)
{
GtkDragAnim *anim = data;
gint x, y;
gboolean retval;
GDK_THREADS_ENTER ();
if (anim->step == anim->n_steps)
{
gtk_drag_source_info_destroy (anim->info);
g_free (anim);
retval = FALSE;
}
else
{
x = (anim->info->start_x * (anim->step + 1) +
anim->info->cur_x * (anim->n_steps - anim->step - 1)) / anim->n_steps;
y = (anim->info->start_y * (anim->step + 1) +
anim->info->cur_y * (anim->n_steps - anim->step - 1)) / anim->n_steps;
if (anim->info->icon_window)
gtk_widget_set_uposition (anim->info->icon_window,
x - anim->info->hot_x,
y - anim->info->hot_y);
anim->step++;
retval = TRUE;
}
GDK_THREADS_LEAVE ();
return retval;
}
static void
gtk_drag_remove_icon (GtkDragSourceInfo *info)
{
if (info->icon_window)
{
gtk_widget_hide (info->icon_window);
if (info->destroy_icon)
gtk_widget_destroy (info->icon_window);
gtk_widget_unref (info->icon_window);
info->icon_window = NULL;
}
}
static void
gtk_drag_source_info_destroy (gpointer data)
{
GtkDragSourceInfo *info = data;
gtk_drag_remove_icon (data);
if (!info->proxy_dest)
gtk_signal_emit_by_name (GTK_OBJECT (info->widget), "drag_end",
info->context);
if (info->widget)
gtk_widget_unref (info->widget);
gtk_signal_disconnect_by_data (GTK_OBJECT (info->ipc_widget), info);
gtk_selection_remove_all (info->ipc_widget);
gtk_object_set_data (GTK_OBJECT (info->ipc_widget), "gtk-info", NULL);
source_widgets = g_slist_remove (source_widgets, info->ipc_widget);
gtk_drag_release_ipc_widget (info->ipc_widget);
gtk_target_list_unref (info->target_list);
g_object_set_qdata (G_OBJECT (info->context), g_quark_from_static_string ("gtk-info"), NULL);
gdk_drag_context_unref (info->context);
if (info->drop_timeout)
gtk_timeout_remove (info->drop_timeout);
g_free (info);
}
/*************************************************************
* gtk_drag_update:
* Function to update the status of the drag when the
* cursor moves or the modifier changes
* arguments:
* info: DragSourceInfo for the drag
* x_root, y_root: position of darg
* event: The event that triggered this call
* results:
*************************************************************/
static void
gtk_drag_update (GtkDragSourceInfo *info,
gint x_root,
gint y_root,
GdkEvent *event)
{
GdkDragAction action;
GdkDragAction possible_actions;
GdkWindow *window = NULL;
GdkWindow *dest_window;
GdkDragProtocol protocol;
GdkAtom selection;
guint32 time = gtk_drag_get_event_time (event);
gtk_drag_get_event_actions (event,
info->button,
info->possible_actions,
&action, &possible_actions);
info->cur_x = x_root;
info->cur_y = y_root;
if (info->icon_window)
{
gdk_window_raise (info->icon_window->window);
gtk_widget_set_uposition (info->icon_window,
info->cur_x - info->hot_x,
info->cur_y - info->hot_y);
window = info->icon_window->window;
}
gdk_drag_find_window (info->context,
window, x_root, y_root,
&dest_window, &protocol);
if (gdk_drag_motion (info->context, dest_window, protocol,
x_root, y_root, action,
possible_actions,
time))
{
if (info->last_event)
gdk_event_free ((GdkEvent *)info->last_event);
info->last_event = gdk_event_copy ((GdkEvent *)event);
}
if (dest_window)
gdk_window_unref (dest_window);
selection = gdk_drag_get_selection (info->context);
if (selection)
gtk_drag_source_check_selection (info, selection, time);
}
/*************************************************************
* gtk_drag_end:
* Called when the user finishes to drag, either by
* releasing the mouse, or by pressing Esc.
* arguments:
* widget: GtkInvisible widget for this drag
* info:
* results:
*************************************************************/
static void
gtk_drag_end (GtkDragSourceInfo *info, guint32 time)
{
GdkEvent send_event;
GtkWidget *source_widget = info->widget;
gdk_pointer_ungrab (time);
gdk_keyboard_ungrab (time);
gtk_grab_remove (info->ipc_widget);
gtk_signal_disconnect_by_func (GTK_OBJECT (info->ipc_widget),
GTK_SIGNAL_FUNC (gtk_drag_button_release_cb),
info);
gtk_signal_disconnect_by_func (GTK_OBJECT (info->ipc_widget),
GTK_SIGNAL_FUNC (gtk_drag_motion_cb),
info);
/* Send on a release pair to the the original
* widget to convince it to release its grab. We need to
* call gtk_propagate_event() here, instead of
* gtk_widget_event() because widget like GtkList may
* expect propagation.
*/
send_event.button.type = GDK_BUTTON_RELEASE;
send_event.button.window = GDK_ROOT_PARENT ();
send_event.button.send_event = TRUE;
send_event.button.time = time;
send_event.button.x = 0;
send_event.button.y = 0;
send_event.button.pressure = 0.;
send_event.button.xtilt = 0.;
send_event.button.ytilt = 0.;
send_event.button.state = 0;
send_event.button.button = info->button;
send_event.button.source = GDK_SOURCE_PEN;
send_event.button.deviceid = GDK_CORE_POINTER;
send_event.button.x_root = 0;
send_event.button.y_root = 0;
gtk_propagate_event (source_widget, &send_event);
}
/*************************************************************
* gtk_drag_motion_cb:
* "motion_notify_event" callback during drag.
* arguments:
*
* results:
*************************************************************/
static gint
gtk_drag_motion_cb (GtkWidget *widget,
GdkEventMotion *event,
gpointer data)
{
GtkDragSourceInfo *info = (GtkDragSourceInfo *)data;
gint x_root, y_root;
if (event->is_hint)
{
gdk_window_get_pointer (GDK_ROOT_PARENT(), &x_root, &y_root, NULL);
event->x_root = x_root;
event->y_root = y_root;
}
gtk_drag_update (info, event->x_root, event->y_root, (GdkEvent *)event);
return TRUE;
}
/*************************************************************
* gtk_drag_key_cb:
* "key_press/release_event" callback during drag.
* arguments:
*
* results:
*************************************************************/
static gint
gtk_drag_key_cb (GtkWidget *widget,
GdkEventKey *event,
gpointer data)
{
GtkDragSourceInfo *info = (GtkDragSourceInfo *)data;
GdkModifierType state;
if (event->type == GDK_KEY_PRESS)
{
if (event->keyval == GDK_Escape)
{
gtk_drag_end (info, event->time);
gdk_drag_abort (info->context, event->time);
gtk_drag_drop_finished (info, FALSE, event->time);
return TRUE;
}
}
/* Now send a "motion" so that the modifier state is updated */
/* The state is not yet updated in the event, so we need
* to query it here. We could use XGetModifierMapping, but
* that would be overkill.
*/
gdk_window_get_pointer (GDK_ROOT_PARENT(), NULL, NULL, &state);
event->state = state;
gtk_drag_update (info, info->cur_x, info->cur_y, (GdkEvent *)event);
return TRUE;
}
/*************************************************************
* gtk_drag_button_release_cb:
* "button_release_event" callback during drag.
* arguments:
*
* results:
*************************************************************/
static gint
gtk_drag_button_release_cb (GtkWidget *widget,
GdkEventButton *event,
gpointer data)
{
GtkDragSourceInfo *info = (GtkDragSourceInfo *)data;
if (event->button != info->button)
return FALSE;
gtk_drag_end (info, event->time);
if ((info->context->action != 0) && (info->context->dest_window != NULL))
{
gtk_drag_drop (info, event->time);
}
else
{
gdk_drag_abort (info->context, event->time);
gtk_drag_drop_finished (info, FALSE, event->time);
}
return TRUE;
}
static gint
gtk_drag_abort_timeout (gpointer data)
{
GtkDragSourceInfo *info = data;
guint32 time = GDK_CURRENT_TIME;
GDK_THREADS_ENTER ();
if (info->proxy_dest)
time = info->proxy_dest->proxy_drop_time;
info->drop_timeout = 0;
gtk_drag_drop_finished (info, FALSE, time);
GDK_THREADS_LEAVE ();
return FALSE;
}
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