diff options
Diffstat (limited to 'native/jni/gtk-peer/gnu_java_awt_peer_gtk_GtkVolatileImage.c')
| -rw-r--r-- | native/jni/gtk-peer/gnu_java_awt_peer_gtk_GtkVolatileImage.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/native/jni/gtk-peer/gnu_java_awt_peer_gtk_GtkVolatileImage.c b/native/jni/gtk-peer/gnu_java_awt_peer_gtk_GtkVolatileImage.c new file mode 100644 index 000000000..0234943b2 --- /dev/null +++ b/native/jni/gtk-peer/gnu_java_awt_peer_gtk_GtkVolatileImage.c @@ -0,0 +1,190 @@ +/* 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" + +/* prototypes */ +static void *getNativeObject( JNIEnv *env, jobject obj ); +/* static void setNativeObject( JNIEnv *env, jobject obj, void *ptr ); */ + +GdkPixmap *cp_gtk_get_pixmap( JNIEnv *env, jobject obj); + +/** + * 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, 16 ); + + 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, jobject obj) +{ + GdkPixmap* pixmap = getNativeObject(env, obj); + 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_getPixels +(JNIEnv *env, jobject obj) +{ + /* 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 = GDK_PIXMAP(getNativeObject(env, obj)); + 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; +} + +/** + * Update the pixels. + */ +JNIEXPORT void JNICALL +Java_gnu_java_awt_peer_gtk_GtkVolatileImage_update +(JNIEnv *env, jobject obj, jobject gtkimage) +{ + GdkPixmap *pixmap = getNativeObject(env, obj); + GdkPixbuf *pixbuf; + + gdk_threads_enter(); + g_assert( pixmap != NULL ); + + pixbuf = cp_gtk_image_get_pixbuf (env, gtkimage); + g_assert( pixbuf != NULL ); + + gdk_draw_pixbuf (pixmap, NULL, pixbuf, + 0, 0, 0, 0, /* src and dest x, y */ + -1, -1, /* full width, height */ + GDK_RGB_DITHER_NORMAL, 0, 0); + gdk_threads_leave(); +} + +GdkPixmap *cp_gtk_get_pixmap( JNIEnv *env, jobject obj) +{ + return (GdkPixmap *)getNativeObject(env, obj); +} + +/** + * Gets the native object field. + */ +static void * +getNativeObject( JNIEnv *env, jobject obj ) +{ + jclass cls; + jlong value; + jfieldID nofid; + cls = (*env)->GetObjectClass( env, obj ); + nofid = (*env)->GetFieldID( env, cls, "nativePointer", "J" ); + value = (*env)->GetLongField( env, obj, nofid ); + (*env)->DeleteLocalRef( env, cls ); + return JLONG_TO_PTR(void, value); +} |