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lxdream.org :: lxdream/src/gtkui/gtk_win.c
lxdream 0.9.1
released Jun 29
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filename src/gtkui/gtk_win.c
changeset 849:bbe26d798fc2
prev843:7936c1162ce9
next850:28782ebbd01d
author nkeynes
date Mon Sep 08 05:13:51 2008 +0000 (12 years ago)
permissions -rw-r--r--
last change Refactor mouse event management - button events are now usable for controllers
file annotate diff log raw
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/**
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 * $Id$
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 *
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 * Define the main (emu) GTK window, along with its menubars,
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 * toolbars, etc.
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 *
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 * Copyright (c) 2005 Nathan Keynes.
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 */
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#include <assert.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <gtk/gtk.h>
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#include <gdk/gdk.h>
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#include <gdk/gdkkeysyms.h>
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#include <X11/Xutil.h>
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#include "lxdream.h"
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#include "dreamcast.h"
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#include "display.h"
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#include "gdrom/gdrom.h"
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#include "gtkui/gtkui.h"
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struct main_window_info {
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    GtkWidget *window;
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    GtkWidget *video;
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    GtkWidget *menubar;
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    GtkWidget *toolbar;
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    GtkWidget *statusbar;
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    GtkActionGroup *actions;
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    gboolean use_grab;
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    gboolean is_grabbed;
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    int32_t mouse_x, mouse_y;
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};
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/******************** Video window **************************/
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#if !(GTK_CHECK_VERSION(2,8,0))
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void gdk_display_warp_pointer (GdkDisplay *display,
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                               GdkScreen  *screen,
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                               gint        x,
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                               gint        y);
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#endif
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/**
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 * Adjust the mouse pointer so that it appears in the center of the video
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 * window. Mainly used for when we have the mouse grab
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 */
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void video_window_center_pointer( main_window_t win )
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{
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    GdkDisplay *display = gtk_widget_get_display(win->video);
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    GdkScreen *screen = gtk_widget_get_screen(win->video);
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    int x,y;
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    int width, height;
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    gdk_window_get_origin(win->video->window, &x, &y);
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    gdk_drawable_get_size(GDK_DRAWABLE(win->video->window), &width, &height);
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    x += width / 2;
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    y += height / 2;
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    gdk_display_warp_pointer( display, screen, x, y );
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    win->mouse_x = width/2;
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    win->mouse_y = height/2;
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}
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/**
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 * Grab the keyboard and mouse for the display. The mouse cursor is hidden and
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 * moved to the centre of the window.
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 *
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 * @param win The window receiving the grab
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 * @return TRUE if the grab was successful, FALSE on failure.
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 */
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gboolean video_window_grab_display( main_window_t win )
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{
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    GdkWindow *gdkwin = win->video->window;
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    GdkColor color = { 0,0,0,0 };
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    char bytes[32]; /* 16 * 16 / 8 */
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    memset(bytes, 0, 32);
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    GdkPixmap *pixmap = gdk_bitmap_create_from_data(NULL, bytes, 16, 16);
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    GdkCursor *cursor = gdk_cursor_new_from_pixmap(pixmap, pixmap, &color, &color, 16, 16);
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    gdk_pixmap_unref(pixmap);
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    gboolean success =
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        gdk_pointer_grab( gdkwin, FALSE, 
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                GDK_POINTER_MOTION_MASK|GDK_BUTTON_PRESS_MASK|GDK_BUTTON_RELEASE_MASK, 
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                gdkwin, cursor, GDK_CURRENT_TIME ) == GDK_GRAB_SUCCESS;
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    gdk_cursor_unref(cursor);
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    if( success ) {
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        success = gdk_keyboard_grab( gdkwin, FALSE, GDK_CURRENT_TIME ) == GDK_GRAB_SUCCESS;
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        if( !success ) {
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            gdk_pointer_ungrab(GDK_CURRENT_TIME);
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        }
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    }
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    win->is_grabbed = success;
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    main_window_set_running(win, dreamcast_is_running());
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    return success;
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}
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/**
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 * Release the display grab.
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 */
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void video_window_ungrab_display( main_window_t win )
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{
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    gdk_pointer_ungrab(GDK_CURRENT_TIME);
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    gdk_keyboard_ungrab(GDK_CURRENT_TIME);
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    win->is_grabbed = FALSE;
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    main_window_set_running(win, dreamcast_is_running());
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}
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static gboolean on_video_window_mouse_motion( GtkWidget *widget, GdkEventMotion *event,
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                                              gpointer user_data )
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{
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    main_window_t win = (main_window_t)user_data;
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    int32_t x = (int32_t)event->x;
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    int32_t y = (int32_t)event->y;
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    if( win->is_grabbed && 
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            (x != win->mouse_x || y != win->mouse_y) ) {
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        input_event_mousemove( x - win->mouse_x, y - win->mouse_y, FALSE );
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        video_window_center_pointer(win);
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    } else {
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        input_event_mousemove( x, y, TRUE );
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    }
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    return TRUE;
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}
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static gboolean on_video_window_mouse_pressed( GtkWidget *widget, GdkEventButton *event,
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                                               gpointer user_data )
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{
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    main_window_t win = (main_window_t)user_data;
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    if( win->is_grabbed ) {
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        input_event_mousedown( event->button-1, 0, 0, FALSE );
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    } else {
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        input_event_mousedown( event->button-1, (int32_t)event->x, (int32_t)event->y, TRUE );
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    }
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    return TRUE;
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}
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static gboolean on_video_window_mouse_released( GtkWidget *widget, GdkEventButton *event,
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                                                gpointer user_data )
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{
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    main_window_t win = (main_window_t)user_data;
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    if( win->is_grabbed ) {
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        input_event_mouseup( event->button-1, 0, 0, FALSE );
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    } else if( win->use_grab) {
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        video_window_grab_display(win);
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    } else {
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        input_event_mouseup( event->button-1, (int32_t)event->x, (int32_t)event->y, TRUE );
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    }        
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    return TRUE;
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}
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static gboolean on_video_window_key_pressed( GtkWidget *widget, GdkEventKey *event,
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                                             gpointer user_data )
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{
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    main_window_t win = (main_window_t)user_data;
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    if( win->is_grabbed ) {
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#ifdef HAVE_GTK_OSX
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        /* On OSX, use the command key rather than ctrl-alt. Mainly because GTK/OSX 
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         * doesn't seem to be able to get ctrl-alt reliably 
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         **/
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        if( event->keyval == GDK_Meta_L || event->keyval == GDK_Meta_R ) {
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            video_window_ungrab_display(win);
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            return TRUE;
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        }
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#else    	
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        /* Check for ungrab key combo (ctrl-alt). Unfortunately GDK sends it as
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         * a singly-modified keypress rather than a double-modified 'null' press, 
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         * so we have to do a little more work.
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         * Only check Ctrl/Shift/Alt for state - don't want to check numlock/capslock/
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         * mouse buttons/etc
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         */
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        int mod = gdk_keycode_to_modifier(gtk_widget_get_display(widget), event->hardware_keycode);
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        int state = event->state & gtk_accelerator_get_default_mod_mask();
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        if( (state == GDK_CONTROL_MASK && mod == GDK_MOD1_MASK) ||
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                (state == GDK_MOD1_MASK && mod == GDK_CONTROL_MASK) ) {
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            video_window_ungrab_display(win);
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            // Consume the keypress, DC doesn't get it.
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            return TRUE;
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        }
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#endif
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    }
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    input_event_keydown( NULL, gtk_get_unmodified_keyval(event), 1 );
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    return TRUE;
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}
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static gboolean on_video_window_key_released( GtkWidget *widget, GdkEventKey *event,
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                                              gpointer user_data )
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{
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    input_event_keyup( NULL, gtk_get_unmodified_keyval(event), 0 );
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    return TRUE;
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}
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static gboolean on_video_window_focus_changed( GtkWidget *widget, GdkEventFocus *event,
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                                               gpointer user_data )
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{
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    display_set_focused(event->in);
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    return TRUE;
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}
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/*************************** Main window (frame) ******************************/
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static gboolean on_main_window_deleted( GtkWidget *widget, GdkEvent event, gpointer user_data )
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{
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    dreamcast_shutdown();
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    exit(0);
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}
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static void on_main_window_state_changed( GtkWidget *widget, GdkEventWindowState *state, 
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                                          gpointer userdata )
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{
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    main_window_t win = (main_window_t)userdata;
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    if( state->changed_mask & GDK_WINDOW_STATE_FULLSCREEN ) {
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        gboolean fs = (state->new_window_state & GDK_WINDOW_STATE_FULLSCREEN);
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        GtkWidget *frame = gtk_widget_get_parent(win->video);
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        if( frame->style == NULL ) {
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            gtk_widget_set_style( frame, gtk_style_new() );
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        }
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        if( fs ) {
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            gtk_widget_hide( win->menubar );
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            gtk_widget_hide( win->toolbar );
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            gtk_widget_hide( win->statusbar );
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            frame->style->xthickness = 0;
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            frame->style->ythickness = 0;
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        } else {
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            frame->style->xthickness = 2;
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            frame->style->ythickness = 2;
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            gtk_widget_show( win->menubar );
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            gtk_widget_show( win->toolbar );
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            gtk_widget_show( win->statusbar );
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        }
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        gtk_widget_queue_draw( win->window );
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    }
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}
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main_window_t main_window_new( const gchar *title, GtkWidget *menubar, GtkWidget *toolbar,
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                               GtkAccelGroup *accel_group )
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{
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    GtkWidget *vbox;
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    GtkWidget *frame;
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    main_window_t win = g_malloc0( sizeof(struct main_window_info) );
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    win->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
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    win->menubar = menubar;
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    win->toolbar = toolbar;
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    win->use_grab = FALSE;
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    win->is_grabbed = FALSE;
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    gtk_window_set_title( GTK_WINDOW(win->window), title );
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    gtk_window_add_accel_group (GTK_WINDOW (win->window), accel_group);
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    gtk_toolbar_set_style( GTK_TOOLBAR(toolbar), GTK_TOOLBAR_ICONS );
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    win->video = video_gtk_create_drawable();
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    gtk_widget_set_size_request( win->video, 640, 480 ); 
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    gtk_widget_set_double_buffered( win->video, FALSE );
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    frame = gtk_frame_new(NULL);
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    gtk_frame_set_shadow_type( GTK_FRAME(frame), GTK_SHADOW_IN );
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    gtk_container_add( GTK_CONTAINER(frame), win->video );
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    win->statusbar = gtk_statusbar_new();
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    vbox = gtk_vbox_new(FALSE, 0);
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    gtk_container_add( GTK_CONTAINER(win->window), vbox );
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    gtk_box_pack_start( GTK_BOX(vbox), menubar, FALSE, FALSE, 0 );
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    gtk_box_pack_start( GTK_BOX(vbox), toolbar, FALSE, FALSE, 0 );
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    gtk_box_pack_start( GTK_BOX(vbox), frame, TRUE, TRUE, 0 );
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    gtk_box_pack_start( GTK_BOX(vbox), win->statusbar, FALSE, FALSE, 0 );
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    gtk_widget_show_all( win->window );
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    gtk_widget_grab_focus( win->video );
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    gtk_statusbar_push( GTK_STATUSBAR(win->statusbar), 1, "Stopped" );
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    g_signal_connect( win->window, "delete_event", 
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                      G_CALLBACK(on_main_window_deleted), win );
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    g_signal_connect( win->window, "window-state-event",
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                      G_CALLBACK(on_main_window_state_changed), win );
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    g_signal_connect( win->video, "key-press-event",
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                      G_CALLBACK(on_video_window_key_pressed), win );
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    g_signal_connect( win->video, "key-release-event",
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                      G_CALLBACK(on_video_window_key_released), win );
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    g_signal_connect( win->video, "motion-notify-event",
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                      G_CALLBACK(on_video_window_mouse_motion), win );
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    g_signal_connect( win->video, "button-press-event",
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                      G_CALLBACK(on_video_window_mouse_pressed), win );
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    g_signal_connect( win->video, "button-release-event", 
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                      G_CALLBACK(on_video_window_mouse_released), win );
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    g_signal_connect( win->video, "focus-in-event",
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                      G_CALLBACK(on_video_window_focus_changed), win);
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    g_signal_connect( win->video, "focus-out-event",
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                      G_CALLBACK(on_video_window_focus_changed), win);
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    gtk_widget_add_events( win->video, 
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                           GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK |
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                           GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
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                           GDK_POINTER_MOTION_MASK | GDK_FOCUS_CHANGE_MASK );
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    return win;
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}
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void main_window_set_status_text( main_window_t win, char *text )
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{
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    gtk_statusbar_pop( GTK_STATUSBAR(win->statusbar), 1 );
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    if( win->is_grabbed ) {
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        char buf[128];
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#ifdef HAVE_GTK_OSX
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        snprintf( buf, sizeof(buf), "%s %s", text, _("(Press <command> to release grab)") );
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#else	
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        snprintf( buf, sizeof(buf), "%s %s", text, _("(Press <ctrl><alt> to release grab)") );
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#endif
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        gtk_statusbar_push( GTK_STATUSBAR(win->statusbar), 1, buf );
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    } else {
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        gtk_statusbar_push( GTK_STATUSBAR(win->statusbar), 1, text );
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    }
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}
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void main_window_set_running( main_window_t win, gboolean running )
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{
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   336
    char *text = running ? _("Running") : _("Stopped");
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   337
    gtk_gui_enable_action( "Pause", running );
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   338
    gtk_gui_enable_action( "Run", !running && dreamcast_can_run() );
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   339
    main_window_set_status_text( win, text );
nkeynes@435
   340
}
nkeynes@435
   341
nkeynes@435
   342
void main_window_set_framerate( main_window_t win, float rate )
nkeynes@435
   343
{
nkeynes@435
   344
nkeynes@435
   345
nkeynes@435
   346
}
nkeynes@435
   347
nkeynes@437
   348
void main_window_set_speed( main_window_t win, double speed )
nkeynes@437
   349
{
nkeynes@437
   350
    char buf[32];
nkeynes@437
   351
nkeynes@480
   352
    snprintf( buf, 32, "Running (%2.4f%%)", speed );
nkeynes@608
   353
    main_window_set_status_text( win, buf );
nkeynes@437
   354
}
nkeynes@437
   355
nkeynes@435
   356
GtkWidget *main_window_get_renderarea( main_window_t win )
nkeynes@435
   357
{
nkeynes@435
   358
    return win->video;
nkeynes@435
   359
}
nkeynes@447
   360
nkeynes@447
   361
GtkWindow *main_window_get_frame( main_window_t win )
nkeynes@447
   362
{
nkeynes@447
   363
    return GTK_WINDOW(win->window);
nkeynes@447
   364
}
nkeynes@486
   365
nkeynes@486
   366
void main_window_set_fullscreen( main_window_t win, gboolean fullscreen )
nkeynes@486
   367
{
nkeynes@486
   368
    if( fullscreen ) {
nkeynes@736
   369
        gtk_window_fullscreen( GTK_WINDOW(win->window) );
nkeynes@486
   370
    } else {
nkeynes@736
   371
        gtk_window_unfullscreen( GTK_WINDOW(win->window) );
nkeynes@486
   372
    }
nkeynes@486
   373
}
nkeynes@608
   374
nkeynes@608
   375
void main_window_set_use_grab( main_window_t win, gboolean use_grab )
nkeynes@608
   376
{
nkeynes@608
   377
    if( use_grab != win->use_grab ) {
nkeynes@736
   378
        if( use_grab ) {
nkeynes@736
   379
            GdkCursor *cursor = gdk_cursor_new( GDK_HAND2 );
nkeynes@736
   380
            gdk_window_set_cursor( win->video->window, cursor );
nkeynes@736
   381
            gdk_cursor_unref( cursor );
nkeynes@736
   382
        } else {
nkeynes@736
   383
            gdk_window_set_cursor( win->video->window, NULL );
nkeynes@736
   384
            if( gdk_pointer_is_grabbed() ) {
nkeynes@736
   385
                video_window_ungrab_display(win);
nkeynes@736
   386
            }
nkeynes@736
   387
        }
nkeynes@736
   388
        win->use_grab = use_grab;
nkeynes@608
   389
    }
nkeynes@608
   390
}
nkeynes@837
   391
nkeynes@837
   392
void main_window_update_title( main_window_t win )
nkeynes@837
   393
{
nkeynes@837
   394
    const char *disc = gdrom_get_current_disc_title();
nkeynes@837
   395
    
nkeynes@837
   396
    if( disc == NULL ) {
nkeynes@837
   397
        gtk_window_set_title( GTK_WINDOW(win->window), lxdream_package_name );
nkeynes@837
   398
    } else {
nkeynes@837
   399
        char buf[256];
nkeynes@837
   400
        snprintf( buf, sizeof(buf), "%s - %s", lxdream_package_name, disc );
nkeynes@837
   401
        gtk_window_set_title( GTK_WINDOW(win->window), buf );
nkeynes@837
   402
    }
nkeynes@843
   403
}
.