diff options
Diffstat (limited to 'native/jni/gtk-peer/gnu_java_awt_peer_gtk_ComponentGraphics.c')
-rw-r--r-- | native/jni/gtk-peer/gnu_java_awt_peer_gtk_ComponentGraphics.c | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/native/jni/gtk-peer/gnu_java_awt_peer_gtk_ComponentGraphics.c b/native/jni/gtk-peer/gnu_java_awt_peer_gtk_ComponentGraphics.c new file mode 100644 index 000000000..eea219569 --- /dev/null +++ b/native/jni/gtk-peer/gnu_java_awt_peer_gtk_ComponentGraphics.c @@ -0,0 +1,243 @@ +/* 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" + +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); +} + +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 void JNICALL +Java_gnu_java_awt_peer_gtk_ComponentGraphics_drawVolatile +(JNIEnv *env, jobject obj __attribute__ ((unused)), jobject peer, + jobject img, jint x, jint y, jint w, jint h) +{ + GdkPixmap *pixmap; + GtkWidget *widget = NULL; + void *ptr = NULL; + GdkGC *gc; + + gdk_threads_enter(); + + ptr = NSA_GET_PTR (env, peer); + g_assert (ptr != NULL); + + widget = GTK_WIDGET (ptr); + g_assert (widget != NULL); + + pixmap = cp_gtk_get_pixmap( env, img ); + + gc = gdk_gc_new(GDK_DRAWABLE(widget->window)); + gdk_draw_drawable(GDK_DRAWABLE(widget->window), + gc, + pixmap, + 0, 0, + x, y, + w, h); + + schedule_flush (); + + gdk_threads_leave(); +} |