llvm-gcc-4.2/libjava/classpath/native/jni/gtk-peer/gnu_java_awt_peer_gtk_ComponentGraphics.c - llvm-archive - Git at Google

 /* 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();
 }
	/* 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();
	}