| /* |
| * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| #include "MyCanvas.h" |
| #include "jawt_md.h" |
| |
| /* |
| * Class: MyCanvas |
| * Method: paint |
| * Signature: (Ljava/awt/Graphics;)V |
| */ |
| JNIEXPORT void JNICALL Java_MyCanvas_paint |
| (JNIEnv* env, jobject canvas, jobject graphics) |
| { |
| JAWT awt; |
| JAWT_DrawingSurface* ds; |
| JAWT_DrawingSurfaceInfo* dsi; |
| JAWT_X11DrawingSurfaceInfo* dsi_x11; |
| jboolean result; |
| jint lock; |
| GC gc; |
| jobject ref; |
| |
| /* Get the AWT */ |
| awt.version = JAWT_VERSION_1_4; |
| if (JAWT_GetAWT(env, &awt) == JNI_FALSE) { |
| printf("AWT Not found\n"); |
| return; |
| } |
| |
| /* Lock the AWT */ |
| awt.Lock(env); |
| |
| /* Unlock the AWT */ |
| awt.Unlock(env); |
| |
| /* Get the drawing surface */ |
| ds = awt.GetDrawingSurface(env, canvas); |
| if (ds == NULL) { |
| printf("NULL drawing surface\n"); |
| return; |
| } |
| |
| /* Lock the drawing surface */ |
| lock = ds->Lock(ds); |
| printf("Lock value %d\n", (int)lock); |
| if((lock & JAWT_LOCK_ERROR) != 0) { |
| printf("Error locking surface\n"); |
| awt.FreeDrawingSurface(ds); |
| return; |
| } |
| |
| /* Get the drawing surface info */ |
| dsi = ds->GetDrawingSurfaceInfo(ds); |
| if (dsi == NULL) { |
| printf("Error getting surface info\n"); |
| ds->Unlock(ds); |
| awt.FreeDrawingSurface(ds); |
| return; |
| } |
| |
| /* Get the platform-specific drawing info */ |
| dsi_x11 = (JAWT_X11DrawingSurfaceInfo*)dsi->platformInfo; |
| |
| /* Now paint */ |
| gc = XCreateGC(dsi_x11->display, dsi_x11->drawable, 0, 0); |
| XSetForeground(dsi_x11->display, gc, 0); |
| XFillRectangle(dsi_x11->display, dsi_x11->drawable, gc, |
| 5, 5, 90, 90); |
| XFreeGC(dsi_x11->display, gc); |
| ref = awt.GetComponent(env, (void*)(dsi_x11->drawable)); |
| if (!(*env)->IsSameObject(env, ref, canvas)) { |
| printf("Error! Different objects!\n"); |
| } |
| |
| /* Free the drawing surface info */ |
| ds->FreeDrawingSurfaceInfo(dsi); |
| |
| /* Unlock the drawing surface */ |
| ds->Unlock(ds); |
| |
| /* Free the drawing surface */ |
| awt.FreeDrawingSurface(ds); |
| } |