Search
lxdream.org :: lxdream/src/drivers/video_gtk.c
lxdream 0.9.1
released Jun 29
Download Now
filename src/drivers/video_gtk.c
changeset 449:21440948c684
prev443:1163eb5c0590
next477:9a373f2ff009
author nkeynes
date Tue Oct 16 12:38:01 2007 +0000 (12 years ago)
permissions -rw-r--r--
last change Modify keyboard input to use unmodified key values only
view annotate diff log raw
     1 /**
     2  * $Id: video_gtk.c,v 1.16 2007-10-16 12:38:01 nkeynes Exp $
     3  *
     4  * The PC side of the video support (responsible for actually displaying / 
     5  * rendering frames)
     6  *
     7  * Copyright (c) 2005 Nathan Keynes.
     8  *
     9  * This program is free software; you can redistribute it and/or modify
    10  * it under the terms of the GNU General Public License as published by
    11  * the Free Software Foundation; either version 2 of the License, or
    12  * (at your option) any later version.
    13  *
    14  * This program is distributed in the hope that it will be useful,
    15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    17  * GNU General Public License for more details.
    18  */
    20 #include <gnome.h>
    21 #include <gdk/gdkx.h>
    22 #include <stdint.h>
    23 #include "dream.h"
    24 #include "display.h"
    25 #include "drivers/video_x11.h"
    26 #include "gui/gtkui.h"
    28 static GtkWidget *video_win = NULL;
    29 int video_width = 640;
    30 int video_height = 480;
    32 gboolean video_gtk_init();
    33 void video_gtk_shutdown();
    34 uint16_t video_gtk_resolve_keysym( const gchar *keysym );
    36 struct display_driver display_gtk_driver = { "gtk", video_gtk_init, video_gtk_shutdown,
    37 					     video_gtk_resolve_keysym,
    38 					     NULL, NULL, NULL, NULL, NULL, NULL, NULL };
    40 /**
    41  * Extract the keyval of the key event if no modifier keys were pressed -
    42  * in other words get the keyval of the key by itself. The other way around
    43  * would be to use the hardware keysyms directly rather than the keyvals,
    44  * but the mapping looks to be messier.
    45  */
    46 uint16_t video_gtk_unmodified_keyval( GdkEventKey *event )
    47 {
    48     GdkKeymap *keymap = gdk_keymap_get_default();
    49     guint keyval;
    51     gdk_keymap_translate_keyboard_state( keymap, event->hardware_keycode, 0, 0, &keyval, 
    52 					 NULL, NULL, NULL );
    53     return keyval;
    54 }
    56 gboolean video_gtk_keydown_callback(GtkWidget       *widget,
    57 				     GdkEventKey     *event,
    58 				     gpointer         user_data)
    59 {
    60     input_event_keydown( video_gtk_unmodified_keyval(event) );
    61     return TRUE;
    62 }
    64 gboolean video_gtk_keyup_callback(GtkWidget       *widget,
    65 				  GdkEventKey     *event,
    66 				  gpointer         user_data)
    67 {
    68     input_event_keyup( video_gtk_unmodified_keyval(event) );
    69     return TRUE;
    70 }
    72 uint16_t video_gtk_resolve_keysym( const gchar *keysym )
    73 {
    74     int val = gdk_keyval_from_name( keysym );
    75     if( val == GDK_VoidSymbol )
    76 	return 0;
    77     return (uint16_t)val;
    78 }
    80 gboolean video_gtk_expose_callback(GtkWidget *widget, GdkEventExpose *event, gpointer data )
    81 {
    82     gl_redisplay_last();
    83     return TRUE;
    84 }
    86 gboolean video_gtk_resize_callback(GtkWidget *widget, GdkEventConfigure *event, gpointer data )
    87 {
    88     video_width = event->width;
    89     video_height = event->height;
    90     gl_redisplay_last();
    91     return TRUE;
    92 }
    94 gboolean video_gtk_init()
    95 {
    96     video_win = gtk_gui_get_renderarea();
    98     g_signal_connect( video_win, "key_press_event", 
    99 		      G_CALLBACK(video_gtk_keydown_callback), NULL );
   100     g_signal_connect( video_win, "key_release_event", 
   101 		      G_CALLBACK(video_gtk_keyup_callback), NULL );
   102     g_signal_connect( video_win, "expose_event",
   103 		      G_CALLBACK(video_gtk_expose_callback), NULL );
   104     g_signal_connect( video_win, "configure_event",
   105 		      G_CALLBACK(video_gtk_resize_callback), NULL );
   106     gtk_widget_add_events( video_win, 
   107 			   GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK |
   108 			   GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK );
   109     gtk_widget_set_double_buffered( video_win, FALSE );
   110     video_width = video_win->allocation.width;
   111     video_height = video_win->allocation.height;
   112     return video_glx_init( gdk_x11_display_get_xdisplay( gtk_widget_get_display(GTK_WIDGET(video_win))),
   113 			   gdk_x11_screen_get_xscreen( gtk_widget_get_screen(GTK_WIDGET(video_win))),
   114 			   GDK_WINDOW_XWINDOW( GTK_WIDGET(video_win)->window ),
   115 			   video_width, video_height, &display_gtk_driver );
   116 }
   118 void video_gtk_shutdown()
   119 {
   120     video_glx_shutdown();
   121     gtk_widget_destroy( GTK_WIDGET(video_win) );
   123 }
.