| /* gnu_java_awt_peer_gtk_VolatileImage.c |
| Copyright (C) 2006 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath 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. |
| |
| GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library 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 library. If you modify this library, 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 "jcl.h" |
| #include "gtkpeer.h" |
| #include <gdk/gdkx.h> |
| #include <gdk/gdktypes.h> |
| #include <gdk/gdkprivate.h> |
| #include <gdk/gdkx.h> |
| #include <gdk-pixbuf/gdk-pixbuf.h> |
| #include <gdk-pixbuf/gdk-pixdata.h> |
| |
| #include "gnu_java_awt_peer_gtk_GtkVolatileImage.h" |
| #include "cairographics2d.h" |
| |
| |
| /** |
| * Creates a cairo surface, ARGB32, native ordering, premultiplied alpha. |
| */ |
| JNIEXPORT jlong JNICALL |
| Java_gnu_java_awt_peer_gtk_GtkVolatileImage_init (JNIEnv *env, |
| jobject obj __attribute__ ((__unused__)), |
| jobject peer, |
| jint width, jint height) |
| { |
| GtkWidget *widget = NULL; |
| GdkPixmap* pixmap; |
| void *ptr = NULL; |
| |
| gdk_threads_enter(); |
| |
| if( peer != NULL ) |
| { |
| ptr = NSA_GET_PTR (env, peer); |
| g_assert (ptr != NULL); |
| |
| widget = GTK_WIDGET (ptr); |
| g_assert (widget != NULL); |
| pixmap = gdk_pixmap_new( widget->window, width, height, -1 ); |
| } |
| else |
| pixmap = gdk_pixmap_new( NULL, width, height, |
| gdk_rgb_get_visual()->depth ); |
| |
| gdk_threads_leave(); |
| |
| g_assert( pixmap != NULL ); |
| |
| return PTR_TO_JLONG( pixmap ); |
| } |
| |
| /** |
| * Destroy the surface |
| */ |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_GtkVolatileImage_destroy |
| (JNIEnv *env __attribute__((unused)), jobject obj __attribute((unused)), |
| jlong pointer) |
| { |
| GdkPixmap* pixmap = JLONG_TO_PTR(GdkPixmap, pointer); |
| if( pixmap != NULL ) |
| { |
| gdk_threads_enter(); |
| g_object_unref( pixmap ); |
| gdk_threads_leave(); |
| } |
| } |
| |
| /** |
| * Gets all pixels in an array |
| */ |
| JNIEXPORT jintArray JNICALL |
| Java_gnu_java_awt_peer_gtk_GtkVolatileImage_nativeGetPixels |
| (JNIEnv *env, jobject obj, jlong pointer) |
| { |
| /* jint *pixeldata, *jpixdata; */ |
| jint *jpixdata; |
| GdkPixmap *pixmap; |
| jintArray jpixels; |
| int width, height, depth, size; |
| jclass cls; |
| jfieldID field; |
| |
| cls = (*env)->GetObjectClass (env, obj); |
| field = (*env)->GetFieldID (env, cls, "width", "I"); |
| g_assert (field != 0); |
| width = (*env)->GetIntField (env, obj, field); |
| |
| field = (*env)->GetFieldID (env, cls, "height", "I"); |
| g_assert (field != 0); |
| height = (*env)->GetIntField (env, obj, field); |
| |
| pixmap = JLONG_TO_PTR(GdkPixmap, pointer); |
| g_assert(pixmap != NULL); |
| |
| gdk_threads_enter(); |
| |
| /* get depth in bytes */ |
| depth = gdk_drawable_get_depth( pixmap ) >> 3; |
| size = width * height * 4; |
| jpixels = (*env)->NewIntArray ( env, size ); |
| jpixdata = (*env)->GetIntArrayElements (env, jpixels, NULL); |
| /* memcpy (jpixdata, pixeldata, size * sizeof( jint )); */ |
| |
| (*env)->ReleaseIntArrayElements (env, jpixels, jpixdata, 0); |
| |
| gdk_threads_leave(); |
| |
| return jpixels; |
| } |
| |
| /** |
| * Copy area |
| */ |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_GtkVolatileImage_nativeCopyArea |
| (JNIEnv *env __attribute__((unused)), jobject obj __attribute((unused)), |
| jlong pointer, jint x, jint y, jint w, jint h, jint dx, jint dy) |
| { |
| GdkPixbuf *pixbuf; |
| GdkPixmap* pixmap = JLONG_TO_PTR(GdkPixmap, pointer); |
| |
| g_assert (pixmap != NULL); |
| |
| gdk_threads_enter(); |
| |
| pixbuf = gdk_pixbuf_new( GDK_COLORSPACE_RGB, TRUE, 8, w, h ); |
| gdk_pixbuf_get_from_drawable( pixbuf, pixmap, NULL, x, y, 0, 0, w, h ); |
| gdk_draw_pixbuf (pixmap, NULL, pixbuf, |
| 0, 0, x + dx, y + dy, |
| w, h, |
| GDK_RGB_DITHER_NORMAL, 0, 0); |
| gdk_threads_leave(); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_GtkVolatileImage_nativeDrawVolatile |
| (JNIEnv *env __attribute__((unused)), jobject obj __attribute((unused)), |
| jlong pointer, jlong srcptr, jint x, jint y, jint w, jint h) |
| { |
| GdkPixmap *dst, *src; |
| GdkGC *gc; |
| |
| src = JLONG_TO_PTR(GdkPixmap, srcptr); |
| dst = JLONG_TO_PTR(GdkPixmap, pointer); |
| g_assert (src != NULL); |
| g_assert (dst != NULL); |
| |
| gdk_threads_enter(); |
| |
| gc = gdk_gc_new( dst ); |
| gdk_draw_drawable(dst, |
| gc, |
| src, |
| 0, 0, |
| x, y, |
| w, h); |
| g_object_unref( gc ); |
| |
| gdk_threads_leave(); |
| } |
| |