2 Copyright (C) 2001-2006, William Joseph.
5 This file is part of GtkRadiant.
7 GtkRadiant is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 GtkRadiant is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GtkRadiant; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #if !defined( INCLUDED_GTKUTIL_CURSOR_H )
23 #define INCLUDED_GTKUTIL_CURSOR_H
26 #include <gdk/gdkevents.h>
27 #include <gtk/gtkwidget.h>
28 #include <gtk/gtkwindow.h>
30 #include "debugging/debugging.h"
32 typedef struct _GdkCursor GdkCursor;
33 typedef struct _GtkWidget GtkWidget;
34 typedef struct _GtkWindow GtkWindow;
36 GdkCursor* create_blank_cursor();
37 void blank_cursor( GtkWidget* widget );
38 void default_cursor( GtkWidget* widget );
39 void Sys_GetCursorPos( GtkWindow* window, int *x, int *y );
40 void Sys_SetCursorPos( GtkWindow* window, int x, int y );
47 typedef void ( *MotionFunction )( gdouble x, gdouble y, guint state, void* data );
48 MotionFunction m_function;
54 static gboolean deferred( DeferredMotion* self ){
56 self->m_function( self->m_x, self->m_y, self->m_state, self->m_data );
60 DeferredMotion( MotionFunction function, void* data ) : m_handler( 0 ), m_function( function ), m_data( data ){
62 void motion( gdouble x, gdouble y, guint state ){
66 if ( m_handler == 0 ) {
67 m_handler = g_idle_add( (GSourceFunc)deferred, this );
70 static gboolean gtk_motion( GtkWidget *widget, GdkEventMotion *event, DeferredMotion* self ){
71 self->motion( event->x, event->y, event->state );
76 class DeferredMotionDelta
80 guint m_motion_handler;
81 typedef void ( *MotionDeltaFunction )( int x, int y, void* data );
82 MotionDeltaFunction m_function;
85 static gboolean deferred_motion( gpointer data ){
86 reinterpret_cast<DeferredMotionDelta*>( data )->m_function(
87 reinterpret_cast<DeferredMotionDelta*>( data )->m_delta_x,
88 reinterpret_cast<DeferredMotionDelta*>( data )->m_delta_y,
89 reinterpret_cast<DeferredMotionDelta*>( data )->m_data
91 reinterpret_cast<DeferredMotionDelta*>( data )->m_motion_handler = 0;
92 reinterpret_cast<DeferredMotionDelta*>( data )->m_delta_x = 0;
93 reinterpret_cast<DeferredMotionDelta*>( data )->m_delta_y = 0;
97 DeferredMotionDelta( MotionDeltaFunction function, void* data ) : m_delta_x( 0 ), m_delta_y( 0 ), m_motion_handler( 0 ), m_function( function ), m_data( data ){
100 if ( m_motion_handler != 0 ) {
101 g_source_remove( m_motion_handler );
102 deferred_motion( this );
105 void motion_delta( int x, int y, unsigned int state ){
108 if ( m_motion_handler == 0 ) {
109 m_motion_handler = g_idle_add( deferred_motion, this );
116 unsigned int handle_motion;
117 int recorded_x, recorded_y, last_x, last_y;
118 typedef void ( *MotionDeltaFunction )( int x, int y, unsigned int state, void* data );
119 MotionDeltaFunction m_function;
122 FreezePointer() : handle_motion( 0 ), m_function( 0 ), m_data( 0 ){
124 static gboolean motion_delta( GtkWidget *widget, GdkEventMotion *event, FreezePointer* self ){
125 int current_x, current_y;
126 Sys_GetCursorPos( GTK_WINDOW( widget ), ¤t_x, ¤t_y );
127 int dx = current_x - self->last_x;
128 int dy = current_y - self->last_y;
129 int ddx = current_x - self->recorded_x;
130 int ddy = current_y - self->recorded_y;
131 self->last_x = current_x;
132 self->last_y = current_y;
133 if ( dx != 0 || dy != 0 ) {
134 //globalOutputStream() << "motion x: " << dx << ", y: " << dy << "\n";
135 if (ddx < -32 || ddx > 32 || ddy < -32 || ddy > 32) {
136 Sys_SetCursorPos( GTK_WINDOW( widget ), self->recorded_x, self->recorded_y );
137 self->last_x = self->recorded_x;
138 self->last_y = self->recorded_y;
140 self->m_function( dx, dy, event->state, self->m_data );
145 void freeze_pointer( GtkWindow* window, MotionDeltaFunction function, void* data ){
146 ASSERT_MESSAGE( m_function == 0, "can't freeze pointer" );
148 const GdkEventMask mask = static_cast<GdkEventMask>( GDK_POINTER_MOTION_MASK
149 | GDK_POINTER_MOTION_HINT_MASK
150 | GDK_BUTTON_MOTION_MASK
151 | GDK_BUTTON1_MOTION_MASK
152 | GDK_BUTTON2_MOTION_MASK
153 | GDK_BUTTON3_MOTION_MASK
154 | GDK_BUTTON_PRESS_MASK
155 | GDK_BUTTON_RELEASE_MASK
156 | GDK_VISIBILITY_NOTIFY_MASK );
158 GdkCursor* cursor = create_blank_cursor();
159 //GdkGrabStatus status =
160 gdk_pointer_grab( GTK_WIDGET( window )->window, TRUE, mask, 0, cursor, GDK_CURRENT_TIME );
161 gdk_cursor_unref( cursor );
163 Sys_GetCursorPos( window, &recorded_x, &recorded_y );
165 Sys_SetCursorPos( window, recorded_x, recorded_y );
170 m_function = function;
173 handle_motion = g_signal_connect( G_OBJECT( window ), "motion_notify_event", G_CALLBACK( motion_delta ), this );
176 void unfreeze_pointer( GtkWindow* window ){
177 g_signal_handler_disconnect( G_OBJECT( window ), handle_motion );
182 Sys_SetCursorPos( window, recorded_x, recorded_y );
184 gdk_pointer_ungrab( GDK_CURRENT_TIME );