GTK: wrap GTK_WIDGET
[xonotic/netradiant.git] / libs / gtkutil / cursor.cpp
1 /*
2    Copyright (C) 2001-2006, William Joseph.
3    All Rights Reserved.
4
5    This file is part of GtkRadiant.
6
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.
11
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.
16
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
20  */
21
22 #include "cursor.h"
23
24 #include "stream/textstream.h"
25
26 #include <string.h>
27 #include <gdk/gdk.h>
28 #include <gtk/gtk.h>
29
30
31 GdkCursor* create_blank_cursor(){
32         return gdk_cursor_new(GDK_BLANK_CURSOR);
33 }
34
35 void blank_cursor( ui::Widget widget ){
36         GdkCursor* cursor = create_blank_cursor();
37         gdk_window_set_cursor( gtk_widget_get_window(widget), cursor );
38         gdk_cursor_unref( cursor );
39 }
40
41 void default_cursor( ui::Widget widget ){
42         gdk_window_set_cursor( gtk_widget_get_window(widget), 0 );
43 }
44
45
46 void Sys_GetCursorPos( ui::Window window, int *x, int *y ){
47         gdk_display_get_pointer( gdk_display_get_default(), 0, x, y, 0 );
48 }
49
50 void Sys_SetCursorPos( ui::Window window, int x, int y ){
51         GdkScreen *screen;
52         gdk_display_get_pointer( gdk_display_get_default(), &screen, 0, 0, 0 );
53         gdk_display_warp_pointer( gdk_display_get_default(), screen, x, y );
54 }
55
56 gboolean DeferredMotion::gtk_motion(ui::Widget widget, GdkEventMotion *event, DeferredMotion *self)
57 {
58     self->motion( event->x, event->y, event->state );
59     return FALSE;
60 }
61
62 gboolean FreezePointer::motion_delta(ui::Widget widget, GdkEventMotion *event, FreezePointer *self)
63 {
64         int current_x, current_y;
65         Sys_GetCursorPos( ui::Window(GTK_WINDOW( widget )), &current_x, &current_y );
66         int dx = current_x - self->last_x;
67         int dy = current_y - self->last_y;
68         int ddx = current_x - self->recorded_x;
69         int ddy = current_y - self->recorded_y;
70         self->last_x = current_x;
71         self->last_y = current_y;
72         if ( dx != 0 || dy != 0 ) {
73                 //globalOutputStream() << "motion x: " << dx << ", y: " << dy << "\n";
74                 if (ddx < -32 || ddx > 32 || ddy < -32 || ddy > 32) {
75                         Sys_SetCursorPos( ui::Window(GTK_WINDOW( widget )), self->recorded_x, self->recorded_y );
76                         self->last_x = self->recorded_x;
77                         self->last_y = self->recorded_y;
78                 }
79                 self->m_function( dx, dy, event->state, self->m_data );
80         }
81         return FALSE;
82 }
83
84 void FreezePointer::freeze_pointer(ui::Window window, FreezePointer::MotionDeltaFunction function, void *data)
85 {
86         ASSERT_MESSAGE( m_function == 0, "can't freeze pointer" );
87
88         const GdkEventMask mask = static_cast<GdkEventMask>( GDK_POINTER_MOTION_MASK
89                                                                                                                  | GDK_POINTER_MOTION_HINT_MASK
90                                                                                                                  | GDK_BUTTON_MOTION_MASK
91                                                                                                                  | GDK_BUTTON1_MOTION_MASK
92                                                                                                                  | GDK_BUTTON2_MOTION_MASK
93                                                                                                                  | GDK_BUTTON3_MOTION_MASK
94                                                                                                                  | GDK_BUTTON_PRESS_MASK
95                                                                                                                  | GDK_BUTTON_RELEASE_MASK
96                                                                                                                  | GDK_VISIBILITY_NOTIFY_MASK );
97
98         GdkCursor* cursor = create_blank_cursor();
99         //GdkGrabStatus status =
100         gdk_pointer_grab( gtk_widget_get_window(window), TRUE, mask, 0, cursor, GDK_CURRENT_TIME );
101         gdk_cursor_unref( cursor );
102
103         Sys_GetCursorPos( window, &recorded_x, &recorded_y );
104
105         Sys_SetCursorPos( window, recorded_x, recorded_y );
106
107         last_x = recorded_x;
108         last_y = recorded_y;
109
110         m_function = function;
111         m_data = data;
112
113         handle_motion = window.connect( "motion_notify_event", G_CALLBACK( motion_delta ), this );
114 }
115
116 void FreezePointer::unfreeze_pointer(ui::Window window)
117 {
118         g_signal_handler_disconnect( G_OBJECT( window ), handle_motion );
119
120         m_function = 0;
121         m_data = 0;
122
123         Sys_SetCursorPos( window, recorded_x, recorded_y );
124
125         gdk_pointer_ungrab( GDK_CURRENT_TIME );
126 }