| /* gnu_java_awt_peer_gtk_ComponentGraphics.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 <cairo-xlib.h> |
| #include <gdk/gdktypes.h> |
| #include <gdk/gdkprivate.h> |
| #include <gdk/gdkx.h> |
| #include <X11/extensions/Xrender.h> |
| |
| #include <gdk-pixbuf/gdk-pixbuf.h> |
| #include <gdk-pixbuf/gdk-pixdata.h> |
| |
| #include <cairo-ft.h> |
| #include <cairo-xlib.h> |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| |
| #include "gnu_java_awt_peer_gtk_ComponentGraphics.h" |
| |
| #include "cairographics2d.h" |
| |
| static short flush_scheduled = 0; |
| |
| static gboolean flush (gpointer data __attribute__((unused))) |
| { |
| gdk_threads_enter (); |
| |
| XFlush (GDK_DISPLAY ()); |
| flush_scheduled = 0; |
| |
| gdk_threads_leave (); |
| |
| return FALSE; |
| } |
| |
| /* The minimum time period between calls to XFlush, in |
| milliseconds. */ |
| #define MINIMUM_FLUSH_PERIOD 20 |
| |
| /* schedule_flush must be called with the GDK lock held. */ |
| static void |
| schedule_flush () |
| { |
| if (!flush_scheduled) |
| { |
| g_timeout_add (MINIMUM_FLUSH_PERIOD, flush, NULL); |
| flush_scheduled = 1; |
| } |
| } |
| |
| void cp_gtk_grab_current_drawable(GtkWidget *widget, GdkDrawable **draw, |
| GdkWindow **win) |
| { |
| g_assert (widget != NULL); |
| g_assert (draw != NULL); |
| g_assert (win != NULL); |
| |
| *win = widget->window; |
| |
| *draw = *win; |
| gdk_window_get_internal_paint_info (*win, draw, 0, 0); |
| } |
| |
| /** |
| * Returns whether the XRender extension is supported |
| */ |
| JNIEXPORT jboolean JNICALL |
| Java_gnu_java_awt_peer_gtk_ComponentGraphics_hasXRender |
| (JNIEnv *env __attribute__ ((unused)), jclass cls __attribute__ ((unused))) |
| { |
| #if HAVE_XRENDER |
| int ev = 0, err = 0; |
| if( XRenderQueryExtension (GDK_DISPLAY (), &ev, &err) ) |
| return JNI_TRUE; |
| #endif |
| return JNI_FALSE; |
| } |
| |
| |
| JNIEXPORT jlong JNICALL |
| Java_gnu_java_awt_peer_gtk_ComponentGraphics_initState |
| (JNIEnv *env, jobject obj __attribute__ ((unused)), jobject peer) |
| { |
| Drawable draw; |
| Display * dpy; |
| Visual * vis; |
| GdkDrawable *drawable; |
| cairo_surface_t *surface; |
| GdkWindow *win; |
| GtkWidget *widget = NULL; |
| void *ptr = NULL; |
| int width, height; |
| cairo_t *cr; |
| |
| gdk_threads_enter(); |
| |
| ptr = NSA_GET_PTR (env, peer); |
| g_assert (ptr != NULL); |
| |
| widget = GTK_WIDGET (ptr); |
| g_assert (widget != NULL); |
| |
| cp_gtk_grab_current_drawable (widget, &drawable, &win); |
| g_assert (drawable != NULL); |
| |
| width = widget->allocation.width; |
| height = widget->allocation.height; |
| |
| g_assert (drawable != NULL); |
| |
| draw = gdk_x11_drawable_get_xid(drawable); |
| g_assert (draw != (XID) 0); |
| |
| dpy = gdk_x11_drawable_get_xdisplay(drawable); |
| g_assert (dpy != NULL); |
| |
| vis = gdk_x11_visual_get_xvisual(gdk_drawable_get_visual(drawable)); |
| g_assert (vis != NULL); |
| |
| surface = cairo_xlib_surface_create (dpy, draw, vis, width, height); |
| g_assert (surface != NULL); |
| |
| cr = cairo_create (surface); |
| g_assert(cr != NULL); |
| |
| gdk_threads_leave(); |
| |
| return PTR_TO_JLONG(cr); |
| } |
| |
| /** |
| * Disposes of the surface |
| */ |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_ComponentGraphics_disposeSurface |
| (JNIEnv *env __attribute__((unused)), jobject obj __attribute__((unused)), |
| jlong value) |
| { |
| struct cairographics2d *gr; |
| cairo_surface_t *surface; |
| |
| gr = JLONG_TO_PTR(struct cairographics2d, value); |
| |
| if (gr == NULL) |
| return; |
| |
| if (gr->cr == NULL) |
| return; |
| |
| surface = cairo_get_target (gr->cr); |
| if (surface != NULL) |
| { |
| gdk_threads_enter(); |
| cairo_surface_destroy (surface); |
| gdk_threads_leave(); |
| } |
| } |
| |
| JNIEXPORT jlong JNICALL |
| Java_gnu_java_awt_peer_gtk_ComponentGraphics_initFromVolatile |
| (JNIEnv *env __attribute__ ((unused)), jobject obj __attribute__ ((unused)), |
| jlong ptr, jint width, jint height) |
| { |
| Drawable draw; |
| Display * dpy; |
| Visual * vis; |
| GdkDrawable *drawable; |
| cairo_surface_t *surface; |
| cairo_t *cr; |
| |
| gdk_threads_enter(); |
| |
| drawable = JLONG_TO_PTR(GdkDrawable, ptr); |
| g_assert (drawable != NULL); |
| |
| draw = gdk_x11_drawable_get_xid(drawable); |
| g_assert (draw != (XID) 0); |
| |
| dpy = gdk_x11_drawable_get_xdisplay(drawable); |
| g_assert (dpy != NULL); |
| |
| vis = gdk_x11_visual_get_xvisual(gdk_drawable_get_visual(drawable)); |
| g_assert (vis != NULL); |
| |
| surface = cairo_xlib_surface_create (dpy, draw, vis, width, height); |
| g_assert (surface != NULL); |
| |
| cr = cairo_create (surface); |
| g_assert(cr != NULL); |
| |
| gdk_threads_leave(); |
| |
| return PTR_TO_JLONG(cr); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_ComponentGraphics_start_1gdk_1drawing |
| (JNIEnv *env __attribute__ ((unused)), jobject obj __attribute__ ((unused))) |
| { |
| gdk_threads_enter(); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_ComponentGraphics_end_1gdk_1drawing |
| (JNIEnv *env __attribute__ ((unused)), jobject obj __attribute__ ((unused))) |
| { |
| schedule_flush (); |
| gdk_threads_leave(); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_ComponentGraphics_copyAreaNative |
| (JNIEnv *env, jobject obj __attribute__((unused)), jobject peer, |
| jint x, jint y, jint w, jint h, jint dx, jint dy) |
| { |
| GdkPixbuf *pixbuf; |
| GdkDrawable *drawable; |
| GdkWindow *win; |
| GtkWidget *widget = NULL; |
| void *ptr = NULL; |
| |
| gdk_threads_enter(); |
| |
| ptr = NSA_GET_PTR (env, peer); |
| g_assert (ptr != NULL); |
| |
| widget = GTK_WIDGET (ptr); |
| g_assert (widget != NULL); |
| |
| cp_gtk_grab_current_drawable (widget, &drawable, &win); |
| g_assert (drawable != NULL); |
| |
| pixbuf = gdk_pixbuf_new( GDK_COLORSPACE_RGB, TRUE, 8, w, h ); |
| gdk_pixbuf_get_from_drawable( pixbuf, drawable, NULL, x, y, 0, 0, w, h ); |
| gdk_draw_pixbuf (drawable, NULL, pixbuf, |
| 0, 0, x + dx, y + dy, |
| w, h, |
| GDK_RGB_DITHER_NORMAL, 0, 0); |
| gdk_threads_leave(); |
| } |
| |
| JNIEXPORT jobject JNICALL |
| Java_gnu_java_awt_peer_gtk_ComponentGraphics_nativeGrab |
| (JNIEnv *env, jclass cls __attribute__((unused)), jobject peer ) |
| { |
| GdkPixbuf *pixbuf; |
| GdkDrawable *drawable; |
| GdkWindow *win; |
| gint w,h; |
| GtkWidget *widget = NULL; |
| void *ptr = NULL; |
| |
| gdk_threads_enter(); |
| |
| ptr = NSA_GET_PTR (env, peer); |
| g_assert (ptr != NULL); |
| |
| widget = GTK_WIDGET (ptr); |
| g_assert (widget != NULL); |
| |
| cp_gtk_grab_current_drawable (widget, &drawable, &win); |
| g_assert (drawable != NULL); |
| |
| gdk_drawable_get_size ( drawable, &w, &h ); |
| |
| pixbuf = gdk_pixbuf_new( GDK_COLORSPACE_RGB, TRUE, 8, w, h ); |
| gdk_pixbuf_get_from_drawable( pixbuf, drawable, NULL, 0, 0, 0, 0, w, h ); |
| g_object_ref( pixbuf ); |
| gdk_draw_pixbuf (drawable, NULL, pixbuf, |
| 0, 0, 0, 0, |
| w, h, |
| GDK_RGB_DITHER_NORMAL, 0, 0); |
| gdk_threads_leave(); |
| |
| return JCL_NewRawDataObject (env, pixbuf); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_ComponentGraphics_drawVolatile |
| (JNIEnv *env, jobject obj __attribute__ ((unused)), jobject peer, |
| jlong img, jint x, jint y, jint w, jint h, jint cx, jint cy, jint cw, jint ch) |
| { |
| GdkPixmap *pixmap; |
| GtkWidget *widget = NULL; |
| void *ptr = NULL; |
| GdkGC *gc; |
| GdkRectangle clip; |
| |
| gdk_threads_enter(); |
| ptr = NSA_GET_PTR (env, peer); |
| g_assert (ptr != NULL); |
| |
| widget = GTK_WIDGET (ptr); |
| g_assert (widget != NULL); |
| |
| pixmap = JLONG_TO_PTR(GdkPixmap, img); |
| |
| gc = gdk_gc_new(widget->window); |
| |
| clip.x = cx; |
| clip.y = cy; |
| clip.width = cw; |
| clip.height = ch; |
| gdk_gc_set_clip_rectangle(gc, &clip); |
| |
| gdk_draw_drawable(widget->window, |
| gc, |
| pixmap, |
| 0, 0, |
| x, y, |
| w, h); |
| |
| g_object_unref( gc ); |
| |
| schedule_flush (); |
| |
| gdk_threads_leave(); |
| } |