Mercurial > hg > release > thermostat-0.9
view laf-utils/src/main/native/GTKThemeUtils.c @ 1103:27b8deb8a6b2
Refactor theme management
review-thread: http://icedtea.classpath.org/pipermail/thermostat/2013-May/006692.html
reviewed-by: vanaltj, obryan
author | Mario Torre <neugens.limasoftware@gmail.com> |
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date | Tue, 21 May 2013 20:13:26 +0200 |
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/* * Copyright 2012, 2013 Red Hat, Inc. * * This file is part of Thermostat. * * Thermostat 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, or (at your * option) any later version. * * Thermostat 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 Thermostat; see the file COPYING. If not see * <http://www.gnu.org/licenses/>. * * Linking this code with other modules is making a combined work * based on this code. Thus, the terms and conditions of the GNU * General Public License cover the whole combination. * * As a special exception, the copyright holders of this code give * you permission to link this code with independent modules to * produce an executable, regardless of the license terms of these * independent modules, and to copy and distribute the resulting * executable under terms of your choice, provided that you also * meet, for each linked independent module, the terms and conditions * of the license of that module. An independent module is a module * which is not derived from or based on this code. If you modify * this code, you may extend this exception to your version of the * library, but you are not obligated to do so. If you do not wish * to do so, delete this exception statement from your version. */ #include "com_redhat_thermostat_internal_utils_laf_gtk_GTKThemeUtils.h" #include <jni.h> #include <glib.h> #include <stdio.h> #include <stdlib.h> #include <gtk/gtk.h> #include <gdk/gdk.h> #include <X11/Xlib.h> JNIEXPORT jboolean JNICALL Java_com_redhat_thermostat_internal_utils_laf_gtk_GTKThemeUtils_init (JNIEnv *env, jclass GTKThemeUtils) { int (*handler)(); int (*io_handler)(); // without this code we will get BadWindow handler = XSetErrorHandler(NULL); io_handler = XSetIOErrorHandler(NULL); g_thread_init(NULL); gdk_threads_init(); gdk_threads_enter(); gboolean result = gtk_init_check(NULL, NULL); XSetErrorHandler(handler); XSetIOErrorHandler(io_handler); gdk_threads_leave(); return (result == TRUE) ? JNI_TRUE : JNI_FALSE; } JNIEXPORT jboolean JNICALL Java_com_redhat_thermostat_internal_utils_laf_gtk_GTKThemeUtils_hasColor (JNIEnv *env, jclass GTKThemeUtils, jstring jColourID) { gdk_threads_enter(); const char *colourID = (*env)->GetStringUTFChars(env, jColourID, NULL); gboolean result = FALSE; GtkWidget *dummy = gtk_window_new(GTK_WINDOW_TOPLEVEL); if (dummy == NULL) { goto bailString; } gtk_widget_ensure_style(dummy); GtkStyle *style = gtk_rc_get_style(dummy); if (style == NULL) { goto bailWidget; } GdkColor color; result = gtk_style_lookup_color(style, colourID, &color); bailWidget: gtk_widget_destroy(dummy); bailString: (*env)->ReleaseStringUTFChars(env, jColourID, colourID); gdk_threads_leave(); return (result == TRUE) ? JNI_TRUE : JNI_FALSE; } JNIEXPORT jint JNICALL Java_com_redhat_thermostat_internal_utils_laf_gtk_GTKThemeUtils_getColor (JNIEnv *env, jclass GTKThemeUtils, jstring jColourID) { gdk_threads_enter(); const char *colourID = (*env)->GetStringUTFChars(env, jColourID, NULL); GtkWidget *dummy = gtk_window_new(GTK_WINDOW_TOPLEVEL); if (dummy == NULL) { goto bailString; } gtk_widget_ensure_style(dummy); GtkStyle *style = gtk_rc_get_style(dummy); if (style == NULL) { goto bailWidget; } jint pixel = 0L; GdkColor color; if (gtk_style_lookup_color(style, colourID, &color)) { gdk_color_parse(colourID, &color); // GTK uses 48 bits to represent colours, while we want a format with // 8 bits per channel. We just save the most significant bits rather // than trying to normalise the values. jint r = color.red >> 8; jint g = color.green >> 8; jint b = color.blue >> 8; pixel = (r << 16) | (g << 8) | b; // fprintf(stderr, "bg colour: %x%x%x\n", r, g, b); // fprintf(stderr, "bg colour: %x%x%x\n", color.red, color.green, color.blue); // fprintf(stderr, "bg colour: %u%u %u\n", color.red, color.green, color.blue); } bailWidget: gtk_widget_destroy(dummy); bailString: (*env)->ReleaseStringUTFChars(env, jColourID, colourID); gdk_threads_leave(); return pixel; }