mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-18 17:30:10 +00:00
e9b6bfcc01
Mon Nov 8 14:47:04 1999 Owen Taylor <otaylor@redhat.com> Move all X specific code into the x11/ directory. Aside from shuffling things around, did the following: * gdk/gdkprivate.h gdk/gdk.h gdk/x11/gdkmain-x11.h: Add gdk_arg_context_* - a simple argument parsing system in the style of popt. * gdk/gdkdrawable.[ch] gdk/gdkprivate.h gdk/gdkwindow.[ch] gdk/x11/gdkprivate-x11.h: Remove X specific stuff from GdkDrawable and GdkWindowPrivate - add ->klass and ->klass_data fields. The klass_data field points to an auxilliary structure that is windowing system dependent. * gdk/gdkfont.c: Make most of the measurement functions simply wrappers around gdk_text_extents(). * gdk/gdkfont.c gdk/gdkprivate.h gdk/x11/gdkfont-x11.c: Add a _gdk_font_strlen() function that hides the weird behavior in gtk+-1.[02] where a string is interpreted differently for 8-bit and 16-bit fonts. * gdk/gdkevents.c: Add a new function gdk_event_button_generate() to store common code for synthesizing double/triple press events. * gdk/gdkgc.[ch]: Virtualize in the same way as gdkdrawable.h. Make all the function that modify an existing GC simply wrappers around gdk_gc_set_values(). * gdk/gdkcc.[ch]: Moved into x11/ directory in preparation for throwing out later. * gdk/gdkfont.c gdk/gdkimage.c gdk/gdkcolor.c: Change GdkFontPrivate, GdkImagePrivate and GdkColormapPrivate to have a windowing system dependent part (GdkFontPrivateX etc.) that "derives" from the system-independent part. * configure.in gdk/x11/Makefile.in gdk/x11/gdkinput*.c: Got rid of the included-source-files for XInput in favor of automake conditionals. (Which didn't exist when XInput support was originally added.) * gdk/gdkrgb.c: Remove the visual id from the debugging statements since that is X11 specific; print out type/depth info instead.
635 lines
15 KiB
C
635 lines
15 KiB
C
/* GDK - The GIMP Drawing Kit
|
|
* Copyright (C) 1995-1997 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 "gdk.h"
|
|
#include "gdkprivate.h"
|
|
|
|
typedef struct _GdkIOClosure GdkIOClosure;
|
|
typedef struct _GdkEventPrivate GdkEventPrivate;
|
|
|
|
#define DOUBLE_CLICK_TIME 250
|
|
#define TRIPLE_CLICK_TIME 500
|
|
#define DOUBLE_CLICK_DIST 5
|
|
#define TRIPLE_CLICK_DIST 5
|
|
|
|
typedef enum
|
|
{
|
|
/* Following flag is set for events on the event queue during
|
|
* translation and cleared afterwards.
|
|
*/
|
|
GDK_EVENT_PENDING = 1 << 0
|
|
} GdkEventFlags;
|
|
|
|
struct _GdkIOClosure
|
|
{
|
|
GdkInputFunction function;
|
|
GdkInputCondition condition;
|
|
GdkDestroyNotify notify;
|
|
gpointer data;
|
|
};
|
|
|
|
struct _GdkEventPrivate
|
|
{
|
|
GdkEvent event;
|
|
guint flags;
|
|
};
|
|
|
|
/*
|
|
* Private function declarations
|
|
*/
|
|
|
|
GdkFilterReturn gdk_wm_protocols_filter (GdkXEvent *xev,
|
|
GdkEvent *event,
|
|
gpointer data);
|
|
|
|
/* Private variable declarations
|
|
*/
|
|
|
|
static guint32 button_click_time[2] = { 0, 0}; /* The last 2 button click times. Used
|
|
* to determine if the latest button click
|
|
* is part of a double or triple click.
|
|
*/
|
|
static GdkWindow *button_window[2] = { NULL, NULL}; /* The last 2 windows to receive button presses.
|
|
* Also used to determine if the latest button
|
|
* click is part of a double or triple click.
|
|
*/
|
|
static guint button_number[2] = { -1, -1 }; /* The last 2 buttons to be pressed.
|
|
*/
|
|
GdkEventFunc gdk_event_func = NULL; /* Callback for events */
|
|
gpointer gdk_event_data = NULL;
|
|
GDestroyNotify gdk_event_notify = NULL;
|
|
|
|
GPollFD event_poll_fd;
|
|
|
|
/*********************************************
|
|
* Functions for maintaining the event queue *
|
|
*********************************************/
|
|
|
|
/*************************************************************
|
|
* gdk_event_queue_find_first:
|
|
* Find the first event on the queue that is not still
|
|
* being filled in.
|
|
* arguments:
|
|
*
|
|
* results:
|
|
* Pointer to the list node for that event, or NULL
|
|
*************************************************************/
|
|
|
|
GList*
|
|
gdk_event_queue_find_first (void)
|
|
{
|
|
GList *tmp_list = gdk_queued_events;
|
|
|
|
while (tmp_list)
|
|
{
|
|
GdkEventPrivate *event = tmp_list->data;
|
|
if (!(event->flags & GDK_EVENT_PENDING))
|
|
return tmp_list;
|
|
|
|
tmp_list = g_list_next (tmp_list);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/*************************************************************
|
|
* gdk_event_queue_remove_link:
|
|
* Remove a specified list node from the event queue.
|
|
* arguments:
|
|
* node: Node to remove.
|
|
* results:
|
|
*************************************************************/
|
|
|
|
void
|
|
gdk_event_queue_remove_link (GList *node)
|
|
{
|
|
if (node->prev)
|
|
node->prev->next = node->next;
|
|
else
|
|
gdk_queued_events = node->next;
|
|
|
|
if (node->next)
|
|
node->next->prev = node->prev;
|
|
else
|
|
gdk_queued_tail = node->prev;
|
|
|
|
}
|
|
|
|
/*************************************************************
|
|
* gdk_event_queue_append:
|
|
* Append an event onto the tail of the event queue.
|
|
* arguments:
|
|
* event: Event to append.
|
|
* results:
|
|
*************************************************************/
|
|
|
|
void
|
|
gdk_event_queue_append (GdkEvent *event)
|
|
{
|
|
gdk_queued_tail = g_list_append (gdk_queued_tail, event);
|
|
|
|
if (!gdk_queued_events)
|
|
gdk_queued_events = gdk_queued_tail;
|
|
else
|
|
gdk_queued_tail = gdk_queued_tail->next;
|
|
}
|
|
|
|
/*************************************************************
|
|
* gdk_event_handler_set:
|
|
*
|
|
* arguments:
|
|
* func: Callback function to be called for each event.
|
|
* data: Data supplied to the function
|
|
* notify: function called when function is no longer needed
|
|
*
|
|
* results:
|
|
*************************************************************/
|
|
|
|
void
|
|
gdk_event_handler_set (GdkEventFunc func,
|
|
gpointer data,
|
|
GDestroyNotify notify)
|
|
{
|
|
if (gdk_event_notify)
|
|
(*gdk_event_notify) (gdk_event_data);
|
|
|
|
gdk_event_func = func;
|
|
gdk_event_data = data;
|
|
gdk_event_notify = notify;
|
|
}
|
|
|
|
/*
|
|
*--------------------------------------------------------------
|
|
* gdk_event_get
|
|
*
|
|
* Gets the next event.
|
|
*
|
|
* Arguments:
|
|
*
|
|
* Results:
|
|
* If an event is waiting that we care about, returns
|
|
* a pointer to that event, to be freed with gdk_event_free.
|
|
* Otherwise, returns NULL.
|
|
*
|
|
* Side effects:
|
|
*
|
|
*--------------------------------------------------------------
|
|
*/
|
|
|
|
GdkEvent*
|
|
gdk_event_get (void)
|
|
{
|
|
gdk_events_queue ();
|
|
|
|
return gdk_event_unqueue ();
|
|
}
|
|
|
|
/*
|
|
*--------------------------------------------------------------
|
|
* gdk_event_peek
|
|
*
|
|
* Gets the next event.
|
|
*
|
|
* Arguments:
|
|
*
|
|
* Results:
|
|
* If an event is waiting that we care about, returns
|
|
* a copy of that event, but does not remove it from
|
|
* the queue. The pointer is to be freed with gdk_event_free.
|
|
* Otherwise, returns NULL.
|
|
*
|
|
* Side effects:
|
|
*
|
|
*--------------------------------------------------------------
|
|
*/
|
|
|
|
GdkEvent*
|
|
gdk_event_peek (void)
|
|
{
|
|
GList *tmp_list;
|
|
|
|
tmp_list = gdk_event_queue_find_first ();
|
|
|
|
if (tmp_list)
|
|
return gdk_event_copy (tmp_list->data);
|
|
else
|
|
return NULL;
|
|
}
|
|
|
|
void
|
|
gdk_event_put (GdkEvent *event)
|
|
{
|
|
GdkEvent *new_event;
|
|
|
|
g_return_if_fail (event != NULL);
|
|
|
|
new_event = gdk_event_copy (event);
|
|
|
|
gdk_event_queue_append (new_event);
|
|
}
|
|
|
|
/*
|
|
*--------------------------------------------------------------
|
|
* gdk_event_copy
|
|
*
|
|
* Copy a event structure into new storage.
|
|
*
|
|
* Arguments:
|
|
* "event" is the event struct to copy.
|
|
*
|
|
* Results:
|
|
* A new event structure. Free it with gdk_event_free.
|
|
*
|
|
* Side effects:
|
|
* The reference count of the window in the event is increased.
|
|
*
|
|
*--------------------------------------------------------------
|
|
*/
|
|
|
|
static GMemChunk *event_chunk = NULL;
|
|
|
|
GdkEvent*
|
|
gdk_event_new (void)
|
|
{
|
|
GdkEventPrivate *new_event;
|
|
|
|
if (event_chunk == NULL)
|
|
event_chunk = g_mem_chunk_new ("events",
|
|
sizeof (GdkEventPrivate),
|
|
4096,
|
|
G_ALLOC_AND_FREE);
|
|
|
|
new_event = g_chunk_new (GdkEventPrivate, event_chunk);
|
|
new_event->flags = 0;
|
|
|
|
return (GdkEvent*) new_event;
|
|
}
|
|
|
|
GdkEvent*
|
|
gdk_event_copy (GdkEvent *event)
|
|
{
|
|
GdkEvent *new_event;
|
|
|
|
g_return_val_if_fail (event != NULL, NULL);
|
|
|
|
new_event = gdk_event_new ();
|
|
|
|
*new_event = *event;
|
|
gdk_window_ref (new_event->any.window);
|
|
|
|
switch (event->any.type)
|
|
{
|
|
case GDK_KEY_PRESS:
|
|
case GDK_KEY_RELEASE:
|
|
new_event->key.string = g_strdup (event->key.string);
|
|
break;
|
|
|
|
case GDK_ENTER_NOTIFY:
|
|
case GDK_LEAVE_NOTIFY:
|
|
if (event->crossing.subwindow != NULL)
|
|
gdk_window_ref (event->crossing.subwindow);
|
|
break;
|
|
|
|
case GDK_DRAG_ENTER:
|
|
case GDK_DRAG_LEAVE:
|
|
case GDK_DRAG_MOTION:
|
|
case GDK_DRAG_STATUS:
|
|
case GDK_DROP_START:
|
|
case GDK_DROP_FINISHED:
|
|
gdk_drag_context_ref (event->dnd.context);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return new_event;
|
|
}
|
|
|
|
/*
|
|
*--------------------------------------------------------------
|
|
* gdk_event_free
|
|
*
|
|
* Free a event structure obtained from gdk_event_copy. Do not use
|
|
* with other event structures.
|
|
*
|
|
* Arguments:
|
|
* "event" is the event struct to free.
|
|
*
|
|
* Results:
|
|
*
|
|
* Side effects:
|
|
* The reference count of the window in the event is decreased and
|
|
* might be freed, too.
|
|
*
|
|
*-------------------------------------------------------------- */
|
|
|
|
void
|
|
gdk_event_free (GdkEvent *event)
|
|
{
|
|
g_return_if_fail (event != NULL);
|
|
|
|
g_assert (event_chunk != NULL); /* paranoid */
|
|
|
|
if (event->any.window)
|
|
gdk_window_unref (event->any.window);
|
|
|
|
switch (event->any.type)
|
|
{
|
|
case GDK_KEY_PRESS:
|
|
case GDK_KEY_RELEASE:
|
|
g_free (event->key.string);
|
|
break;
|
|
|
|
case GDK_ENTER_NOTIFY:
|
|
case GDK_LEAVE_NOTIFY:
|
|
if (event->crossing.subwindow != NULL)
|
|
gdk_window_unref (event->crossing.subwindow);
|
|
break;
|
|
|
|
case GDK_DRAG_ENTER:
|
|
case GDK_DRAG_LEAVE:
|
|
case GDK_DRAG_MOTION:
|
|
case GDK_DRAG_STATUS:
|
|
case GDK_DROP_START:
|
|
case GDK_DROP_FINISHED:
|
|
gdk_drag_context_unref (event->dnd.context);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
g_mem_chunk_free (event_chunk, event);
|
|
}
|
|
|
|
/*
|
|
*--------------------------------------------------------------
|
|
* gdk_event_get_time:
|
|
* Get the timestamp from an event.
|
|
* arguments:
|
|
* event:
|
|
* results:
|
|
* The event's time stamp, if it has one, otherwise
|
|
* GDK_CURRENT_TIME.
|
|
*--------------------------------------------------------------
|
|
*/
|
|
|
|
guint32
|
|
gdk_event_get_time (GdkEvent *event)
|
|
{
|
|
if (event)
|
|
switch (event->type)
|
|
{
|
|
case GDK_MOTION_NOTIFY:
|
|
return event->motion.time;
|
|
case GDK_BUTTON_PRESS:
|
|
case GDK_2BUTTON_PRESS:
|
|
case GDK_3BUTTON_PRESS:
|
|
case GDK_BUTTON_RELEASE:
|
|
return event->button.time;
|
|
case GDK_KEY_PRESS:
|
|
case GDK_KEY_RELEASE:
|
|
return event->key.time;
|
|
case GDK_ENTER_NOTIFY:
|
|
case GDK_LEAVE_NOTIFY:
|
|
return event->crossing.time;
|
|
case GDK_PROPERTY_NOTIFY:
|
|
return event->property.time;
|
|
case GDK_SELECTION_CLEAR:
|
|
case GDK_SELECTION_REQUEST:
|
|
case GDK_SELECTION_NOTIFY:
|
|
return event->selection.time;
|
|
case GDK_PROXIMITY_IN:
|
|
case GDK_PROXIMITY_OUT:
|
|
return event->proximity.time;
|
|
case GDK_DRAG_ENTER:
|
|
case GDK_DRAG_LEAVE:
|
|
case GDK_DRAG_MOTION:
|
|
case GDK_DRAG_STATUS:
|
|
case GDK_DROP_START:
|
|
case GDK_DROP_FINISHED:
|
|
return event->dnd.time;
|
|
default: /* use current time */
|
|
break;
|
|
}
|
|
|
|
return GDK_CURRENT_TIME;
|
|
}
|
|
|
|
/*
|
|
*--------------------------------------------------------------
|
|
* gdk_set_show_events
|
|
*
|
|
* Turns on/off the showing of events.
|
|
*
|
|
* Arguments:
|
|
* "show_events" is a boolean describing whether or
|
|
* not to show the events gdk receives.
|
|
*
|
|
* Results:
|
|
*
|
|
* Side effects:
|
|
* When "show_events" is TRUE, calls to "gdk_event_get"
|
|
* will output debugging informatin regarding the event
|
|
* received to stdout.
|
|
*
|
|
*--------------------------------------------------------------
|
|
*/
|
|
|
|
void
|
|
gdk_set_show_events (gint show_events)
|
|
{
|
|
if (show_events)
|
|
gdk_debug_flags |= GDK_DEBUG_EVENTS;
|
|
else
|
|
gdk_debug_flags &= ~GDK_DEBUG_EVENTS;
|
|
}
|
|
|
|
gint
|
|
gdk_get_show_events (void)
|
|
{
|
|
return gdk_debug_flags & GDK_DEBUG_EVENTS;
|
|
}
|
|
|
|
static void
|
|
gdk_io_destroy (gpointer data)
|
|
{
|
|
GdkIOClosure *closure = data;
|
|
|
|
if (closure->notify)
|
|
closure->notify (closure->data);
|
|
|
|
g_free (closure);
|
|
}
|
|
|
|
/* What do we do with G_IO_NVAL?
|
|
*/
|
|
#define READ_CONDITION (G_IO_IN | G_IO_HUP | G_IO_ERR)
|
|
#define WRITE_CONDITION (G_IO_OUT | G_IO_ERR)
|
|
#define EXCEPTION_CONDITION (G_IO_PRI)
|
|
|
|
static gboolean
|
|
gdk_io_invoke (GIOChannel *source,
|
|
GIOCondition condition,
|
|
gpointer data)
|
|
{
|
|
GdkIOClosure *closure = data;
|
|
GdkInputCondition gdk_cond = 0;
|
|
|
|
if (condition & READ_CONDITION)
|
|
gdk_cond |= GDK_INPUT_READ;
|
|
if (condition & WRITE_CONDITION)
|
|
gdk_cond |= GDK_INPUT_WRITE;
|
|
if (condition & EXCEPTION_CONDITION)
|
|
gdk_cond |= GDK_INPUT_EXCEPTION;
|
|
|
|
if (closure->condition & gdk_cond)
|
|
closure->function (closure->data, g_io_channel_unix_get_fd (source), gdk_cond);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gint
|
|
gdk_input_add_full (gint source,
|
|
GdkInputCondition condition,
|
|
GdkInputFunction function,
|
|
gpointer data,
|
|
GdkDestroyNotify destroy)
|
|
{
|
|
guint result;
|
|
GdkIOClosure *closure = g_new (GdkIOClosure, 1);
|
|
GIOChannel *channel;
|
|
GIOCondition cond = 0;
|
|
|
|
closure->function = function;
|
|
closure->condition = condition;
|
|
closure->notify = destroy;
|
|
closure->data = data;
|
|
|
|
if (condition & GDK_INPUT_READ)
|
|
cond |= READ_CONDITION;
|
|
if (condition & GDK_INPUT_WRITE)
|
|
cond |= WRITE_CONDITION;
|
|
if (condition & GDK_INPUT_EXCEPTION)
|
|
cond |= EXCEPTION_CONDITION;
|
|
|
|
channel = g_io_channel_unix_new (source);
|
|
result = g_io_add_watch_full (channel, G_PRIORITY_DEFAULT, cond,
|
|
gdk_io_invoke,
|
|
closure, gdk_io_destroy);
|
|
g_io_channel_unref (channel);
|
|
|
|
return result;
|
|
}
|
|
|
|
gint
|
|
gdk_input_add (gint source,
|
|
GdkInputCondition condition,
|
|
GdkInputFunction function,
|
|
gpointer data)
|
|
{
|
|
return gdk_input_add_full (source, condition, function, data, NULL);
|
|
}
|
|
|
|
void
|
|
gdk_input_remove (gint tag)
|
|
{
|
|
g_source_remove (tag);
|
|
}
|
|
|
|
GdkEvent*
|
|
gdk_event_unqueue (void)
|
|
{
|
|
GdkEvent *event = NULL;
|
|
GList *tmp_list;
|
|
|
|
tmp_list = gdk_event_queue_find_first ();
|
|
|
|
if (tmp_list)
|
|
{
|
|
event = tmp_list->data;
|
|
gdk_event_queue_remove_link (tmp_list);
|
|
g_list_free_1 (tmp_list);
|
|
}
|
|
|
|
return event;
|
|
}
|
|
|
|
void
|
|
gdk_synthesize_click (GdkEvent *event,
|
|
gint nclicks)
|
|
{
|
|
GdkEvent temp_event;
|
|
|
|
g_return_if_fail (event != NULL);
|
|
|
|
temp_event = *event;
|
|
temp_event.type = (nclicks == 2) ? GDK_2BUTTON_PRESS : GDK_3BUTTON_PRESS;
|
|
|
|
gdk_event_put (&temp_event);
|
|
}
|
|
|
|
void
|
|
gdk_event_button_generate (GdkEvent *event)
|
|
{
|
|
if ((event->button.time < (button_click_time[1] + TRIPLE_CLICK_TIME)) &&
|
|
(event->button.window == button_window[1]) &&
|
|
(event->button.button == button_number[1]))
|
|
{
|
|
gdk_synthesize_click (event, 3);
|
|
|
|
button_click_time[1] = 0;
|
|
button_click_time[0] = 0;
|
|
button_window[1] = NULL;
|
|
button_window[0] = 0;
|
|
button_number[1] = -1;
|
|
button_number[0] = -1;
|
|
}
|
|
else if ((event->button.time < (button_click_time[0] + DOUBLE_CLICK_TIME)) &&
|
|
(event->button.window == button_window[0]) &&
|
|
(event->button.button == button_number[0]))
|
|
{
|
|
gdk_synthesize_click (event, 2);
|
|
|
|
button_click_time[1] = button_click_time[0];
|
|
button_click_time[0] = event->button.time;
|
|
button_window[1] = button_window[0];
|
|
button_window[0] = event->button.window;
|
|
button_number[1] = button_number[0];
|
|
button_number[0] = event->button.button;
|
|
}
|
|
else
|
|
{
|
|
button_click_time[1] = 0;
|
|
button_click_time[0] = event->button.time;
|
|
button_window[1] = NULL;
|
|
button_window[0] = event->button.window;
|
|
button_number[1] = -1;
|
|
button_number[0] = event->button.button;
|
|
}
|
|
}
|