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/* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 8; tab-width: 8 -*-
 *
 * Copyright (C) 2005 William Jon McCann <mccann@jhu.edu>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 *
 */

#include "config.h"

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#include <glib.h>
#include <gtk/gtk.h>

#include "gs-theme-engine.h"
#include "gs-theme-engine-marshal.h"

static void     gs_theme_engine_class_init (GSThemeEngineClass *klass);
static void     gs_theme_engine_init       (GSThemeEngine      *engine);
static void     gs_theme_engine_finalize   (GObject            *object);

struct GSThemeEnginePrivate
{
        gpointer reserved;
};

#define GS_THEME_ENGINE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GS_TYPE_THEME_ENGINE, GSThemeEnginePrivate))

static GObjectClass *parent_class = NULL;

G_DEFINE_ABSTRACT_TYPE (GSThemeEngine, gs_theme_engine, GTK_TYPE_DRAWING_AREA)

void
_gs_theme_engine_profile_log (const char *func,
                              const char *note,
                              const char *format,
                              ...)
{
        va_list args;
        char   *str;
        char   *formatted;

        va_start (args, format);
        formatted = g_strdup_vprintf (format, args);
        va_end (args);

        if (func != NULL) {
                str = g_strdup_printf ("MARK: %s %s: %s %s", g_get_prgname(), func, note ? note : "", formatted);
        } else {
                str = g_strdup_printf ("MARK: %s: %s %s", g_get_prgname(), note ? note : "", formatted);
        }

        g_free (formatted);

        access (str, F_OK);
        g_free (str);
}

static void
gs_theme_engine_set_property (GObject            *object,
                              guint               prop_id,
                              const GValue       *value,
                              GParamSpec         *pspec)
{
        GSThemeEngine *self;

        self = GS_THEME_ENGINE (object);

        switch (prop_id) {
        default:
                G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
                break;
        }
}

static void
gs_theme_engine_get_property (GObject            *object,
                              guint               prop_id,
                              GValue             *value,
                              GParamSpec         *pspec)
{
        GSThemeEngine *self;

        self = GS_THEME_ENGINE (object);

        switch (prop_id) {
        default:
                G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
                break;
        }
}

static void
gs_theme_engine_clear (GtkWidget *widget)
{
        GdkColor     color = { 0, 0x0000, 0x0000, 0x0000 };
        GdkColormap *colormap;
        GtkStateType state;

        g_return_if_fail (GS_IS_THEME_ENGINE (widget));

        if (! GTK_WIDGET_VISIBLE (widget)) {
                return;
        }

        state = (GtkStateType) 0;
        while (state < (GtkStateType) G_N_ELEMENTS (widget->style->bg)) {
                gtk_widget_modify_bg (widget, state, &color);
                state++;
        }

        colormap = gdk_drawable_get_colormap (widget->window);
        gdk_colormap_alloc_color (colormap, &color, FALSE, TRUE);
        gdk_window_set_background (widget->window, &color);
        gdk_window_clear (widget->window);
        gdk_flush ();
}

static gboolean
gs_theme_engine_real_map_event (GtkWidget   *widget,
                                GdkEventAny *event)
{
        gboolean handled = FALSE;

        gs_theme_engine_clear (widget);

        return handled;
}

static void
gs_theme_engine_class_init (GSThemeEngineClass *klass)
{
        GObjectClass   *object_class = G_OBJECT_CLASS (klass);
        GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);

        parent_class = g_type_class_peek_parent (klass);

        object_class->finalize = gs_theme_engine_finalize;
        object_class->get_property = gs_theme_engine_get_property;
        object_class->set_property = gs_theme_engine_set_property;

        widget_class->map_event = gs_theme_engine_real_map_event;

        g_type_class_add_private (klass, sizeof (GSThemeEnginePrivate));
}

static void
gs_theme_engine_init (GSThemeEngine *engine)
{
        engine->priv = GS_THEME_ENGINE_GET_PRIVATE (engine);
}

static void
gs_theme_engine_finalize (GObject *object)
{
        GSThemeEngine *engine;

        g_return_if_fail (object != NULL);
        g_return_if_fail (GS_IS_THEME_ENGINE (object));

        engine = GS_THEME_ENGINE (object);

        g_return_if_fail (engine->priv != NULL);

        G_OBJECT_CLASS (parent_class)->finalize (object);
}

void
gs_theme_engine_get_window_size (GSThemeEngine *engine,
                                 int           *width,
                                 int           *height)
{
        if (width != NULL) {
                *width = 0;
        }
        if (height != NULL) {
                *height = 0;
        }

        g_return_if_fail (GS_IS_THEME_ENGINE (engine));

        if (! GTK_WIDGET_VISIBLE (GTK_WIDGET (engine))) {
                return;
        }

        gdk_window_get_geometry (GTK_WIDGET (engine)->window,
                                 NULL,
                                 NULL,
                                 width,
                                 height,
                                 NULL);
}

GdkWindow *
gs_theme_engine_get_window (GSThemeEngine *engine)
{
        g_return_val_if_fail (GS_IS_THEME_ENGINE (engine), NULL);

        return GTK_WIDGET (engine)->window;
}