1/*
2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24#include "MyCanvas.h"
25#include "jawt_md.h"
26
27/*
28 * Class:     MyCanvas
29 * Method:    paint
30 * Signature: (Ljava/awt/Graphics;)V
31 */
32JNIEXPORT void JNICALL Java_MyCanvas_paint
33(JNIEnv* env, jobject canvas, jobject graphics)
34{
35    JAWT awt;
36    JAWT_DrawingSurface* ds;
37    JAWT_DrawingSurfaceInfo* dsi;
38    JAWT_X11DrawingSurfaceInfo* dsi_x11;
39    jboolean result;
40    jint lock;
41    GC gc;
42    jobject ref;
43
44    /* Get the AWT */
45    awt.version = JAWT_VERSION_1_4;
46    if (JAWT_GetAWT(env, &awt) == JNI_FALSE) {
47        printf("AWT Not found\n");
48        return;
49    }
50
51    /* Lock the AWT */
52    awt.Lock(env);
53
54    /* Unlock the AWT */
55    awt.Unlock(env);
56
57    /* Get the drawing surface */
58    ds = awt.GetDrawingSurface(env, canvas);
59    if (ds == NULL) {
60        printf("NULL drawing surface\n");
61        return;
62    }
63
64    /* Lock the drawing surface */
65    lock = ds->Lock(ds);
66    printf("Lock value %d\n", (int)lock);
67    if((lock & JAWT_LOCK_ERROR) != 0) {
68        printf("Error locking surface\n");
69        awt.FreeDrawingSurface(ds);
70        return;
71    }
72
73    /* Get the drawing surface info */
74    dsi = ds->GetDrawingSurfaceInfo(ds);
75    if (dsi == NULL) {
76        printf("Error getting surface info\n");
77        ds->Unlock(ds);
78        awt.FreeDrawingSurface(ds);
79        return;
80    }
81
82    /* Get the platform-specific drawing info */
83    dsi_x11 = (JAWT_X11DrawingSurfaceInfo*)dsi->platformInfo;
84
85    /* Now paint */
86    gc = XCreateGC(dsi_x11->display, dsi_x11->drawable, 0, 0);
87    XSetForeground(dsi_x11->display, gc, 0);
88    XFillRectangle(dsi_x11->display, dsi_x11->drawable, gc,
89                   5, 5, 90, 90);
90    XFreeGC(dsi_x11->display, gc);
91    ref = awt.GetComponent(env, (void*)(dsi_x11->drawable));
92    if (!(*env)->IsSameObject(env, ref, canvas)) {
93        printf("Error! Different objects!\n");
94    }
95
96    /* Free the drawing surface info */
97    ds->FreeDrawingSurfaceInfo(dsi);
98
99    /* Unlock the drawing surface */
100    ds->Unlock(ds);
101
102    /* Free the drawing surface */
103    awt.FreeDrawingSurface(ds);
104}
105