188 lines
5.0 KiB
C++
188 lines
5.0 KiB
C++
/*
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* Celestia GTK+ Front-End
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* Copyright (C) 2005 Pat Suwalski <pat@suwalski.net>
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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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* $Id: splash.cpp,v 1.4 2006-07-24 17:31:24 christey Exp $
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /* HAVE_CONFIG_H */
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#include <gtk/gtk.h>
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#ifdef CAIRO
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#include <cairo/cairo.h>
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#endif /* CAIRO */
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#include "splash.h"
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#include "common.h"
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/* Declarations */
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static gboolean splashExpose(GtkWidget* win, GdkEventExpose *event, SplashData* ss);
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/* OBJECT: Overrides ProgressNotifier to receive feedback from core */
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GtkSplashProgressNotifier::GtkSplashProgressNotifier(SplashData* _splash) :
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splash(_splash) {};
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void GtkSplashProgressNotifier::update(const string& filename)
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{
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splashSetText(splash, filename.c_str());
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}
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GtkSplashProgressNotifier::~GtkSplashProgressNotifier() {};
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/* ENTRY: Creates a new SplashData struct, starts the splash screen */
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SplashData* splashStart(AppData* app, gboolean showSplash)
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{
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SplashData* ss = g_new0(SplashData, 1);
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ss->app = app;
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ss->notifier = new GtkSplashProgressNotifier(ss);
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ss->hasARGB = FALSE;
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ss->redraw = TRUE;
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/* Continue the "wait" cursor until the splash is done */
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gtk_window_set_auto_startup_notification(FALSE);
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/* Don't do anything else if the splash is not to be shown */
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if (showSplash == FALSE) return ss;
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ss->splash = gtk_window_new(GTK_WINDOW_POPUP);
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gtk_window_set_position(GTK_WINDOW(ss->splash), GTK_WIN_POS_CENTER);
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gtk_widget_set_app_paintable(ss->splash, TRUE);
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#ifdef CAIRO
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/* Colormap Magic */
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GdkScreen* screen = gtk_widget_get_screen(ss->splash);
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GdkColormap* colormap = gdk_screen_get_rgba_colormap(screen);
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if (colormap != NULL)
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{
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gtk_widget_set_colormap(ss->splash, colormap);
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ss->hasARGB = TRUE;
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}
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#endif
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GtkWidget* gf = gtk_fixed_new();
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gtk_container_add(GTK_CONTAINER(ss->splash), gf);
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GtkWidget* i = gtk_image_new_from_file("splash/splash.png");
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gtk_fixed_put(GTK_FIXED(gf), i, 0, 0);
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/* The information label is right-aligned and biased to the lower-right
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* of the window. It's designed to be the full width and height of the
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* opaque parts of the splash. */
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ss->label = gtk_label_new(NULL);
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gtk_misc_set_alignment(GTK_MISC(ss->label), 1, 1);
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gtk_label_set_justify(GTK_LABEL(ss->label), GTK_JUSTIFY_RIGHT);
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gtk_widget_modify_fg(ss->label, GTK_STATE_NORMAL, &ss->label->style->white);
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gtk_widget_show_all(ss->splash);
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/* Size allocations available after showing splash. */
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gtk_widget_set_size_request(ss->label, i->allocation.width - 80,
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i->allocation.height / 2);
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gtk_fixed_put(GTK_FIXED(gf), ss->label, 40, i->allocation.height / 2 - 40);
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gtk_widget_show(ss->label);
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g_signal_connect (ss->splash, "expose_event",
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G_CALLBACK (splashExpose),
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ss);
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while (gtk_events_pending()) gtk_main_iteration();
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return ss;
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}
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/* ENTRY: destroys the splash screen */
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void splashEnd(SplashData* ss)
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{
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if (ss->splash)
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gtk_widget_destroy(ss->splash);
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/* Return the cursor from wait to normal */
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gdk_notify_startup_complete();
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delete ss->notifier;
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g_free(ss);
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}
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/* ENTRY: Sets the text to be shown in the splash */
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void splashSetText(SplashData* ss, const char* text)
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{
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char message[255];
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if (!ss->splash)
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return;
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sprintf(message, _("Version " VERSION "\n%s"), text);
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gtk_label_set_text(GTK_LABEL(ss->label), message);
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/* Update the GTK event queue */
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while (gtk_events_pending()) gtk_main_iteration();
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}
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/* CALLBACK: Called when the splash screen is exposed */
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static gboolean splashExpose(GtkWidget* win, GdkEventExpose *event, SplashData* ss)
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{
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/* All of this code is only needed at the very first drawing. This
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* operation is quite expensive. */
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if (ss->redraw != TRUE) return FALSE;
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if (ss->hasARGB)
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{
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#ifdef CAIRO
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/* Use cairo for true transparent windows */
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cairo_t *cr = gdk_cairo_create(win->window);
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cairo_rectangle(cr, event->area.x,
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event->area.y,
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event->area.width,
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event->area.height);
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cairo_clip(cr);
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/* Draw a fully transparent rectangle the size of the window */
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cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.0);
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cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
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cairo_paint(cr);
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cairo_destroy(cr);
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#endif /* CAIRO */
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}
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else
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{
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/* Fall back to compositing a screenshot of whatever is below the
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* area we are drawing in. */
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GdkPixbuf* bg;
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int x, y, w, h;
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gdk_window_get_root_origin(win->window, &x, &y);
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gdk_drawable_get_size(win->window, &w, &h);
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bg = gdk_pixbuf_get_from_drawable(NULL,
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gtk_widget_get_root_window(win),
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NULL, x, y, 0, 0, w, h);
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gdk_draw_pixbuf(win->window, NULL, bg, 0, 0, 0, 0, w, h,
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GDK_RGB_DITHER_NONE, 0, 0);
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g_object_unref(bg);
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}
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/* Never redraw again */
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ss->redraw = FALSE;
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return FALSE;
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}
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