ba350c1664
Having trouble with the implementation of getHandleToPeer. Current problem is that JAWT_DrawingSurface->Lock() is failing. Why would that be? git-svn-id: svn://10.0.0.236/trunk@173357 18797224-902f-48f8-a5cc-f745e15eee43
115 lines
3.7 KiB
Plaintext
115 lines
3.7 KiB
Plaintext
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s): edburns <edburns@acm.org>
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*/
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/*
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* CocoaBrowserControlCanvas.cpp
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*/
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#include <jawt_md.h>
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#include <assert.h>
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#include "CocoaBrowserControlCanvas.h"
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#include "jni_util.h" //for throwing Exceptions to Java
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jint CocoaBrowserControlCanvas::cocoaGetHandleToPeer(JNIEnv *env, jobject canvas, jobject graphics) {
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printf("debug: edburns: in CocoaBrowserControlCanvas::nativeGetHandleToPeer\n");
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JAWT awt;
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JAWT_DrawingSurface* ds = NULL;
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JAWT_DrawingSurfaceInfo* dsi = NULL;
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JAWT_MacOSXDrawingSurfaceInfo* dsi_mac = NULL;
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jboolean result = JNI_FALSE;
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jint lock = 0;
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NSView *view = NULL;
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printf("debug: edburns: about to get AWT\n");
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// get the AWT
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awt.version = JAWT_VERSION_1_4;
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printf("debug: edburns: set awt version: ok\n");
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result = JAWT_GetAWT(env, &awt);
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printf("debug: edburns: got awt: result: %d\n",result);
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printf("debug: edburns: additional printf\n");
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printf("debug: edburns: got AWT\n");
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printf("debug: edburns: about to get drawing surface\n");
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fflush(stdout);
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// Get the drawing surface. This can be safely cached.
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// Anything below the DS (DSI, contexts, etc)
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// can possibly change/go away and should not be cached.
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ds = awt.GetDrawingSurface(env, canvas);
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printf("debug: edburns: got drawing surface: %d\n", ds);
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fflush(stdout);
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if (NULL == ds) {
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util_ThrowExceptionToJava(env, "CocoaBrowserControlCanvas: can't get drawing surface");
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}
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printf("debug: edburns: about to lock drawing surface: %d\n", ds);
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fflush(stdout);
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// Lock the drawing surface
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// You must lock EACH TIME before drawing
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lock = ds->Lock(ds);
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printf("debug: edburns: acquired lock: %d\n", lock);
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fflush(stdout);
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if (NULL == lock) {
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util_ThrowExceptionToJava(env, "CocoaBrowserControlCanvas: can't lock drawing surface");
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}
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assert((lock & JAWT_LOCK_ERROR) == 0);
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// Get the drawing surface info
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dsi = ds->GetDrawingSurfaceInfo(ds);
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// Check DrawingSurfaceInfo. This can be NULL on Mac OS X
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// if the windowing system is not ready
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if (dsi != NULL) {
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// Get the platform-specific drawing info
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// We will use this to get at Cocoa and CoreGraphics
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// See <JavaVM/jawt_md.h>
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dsi_mac = (JAWT_MacOSXDrawingSurfaceInfo*)dsi->platformInfo;
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if (NULL == dsi_mac) {
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util_ThrowExceptionToJava(env, "CocoaBrowserControlCanvas: can't get DrawingSurfaceInfo");
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}
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// Get the corresponding peer from the caller canvas
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view = dsi_mac->cocoaViewRef;
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// Free the DrawingSurfaceInfo
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ds->FreeDrawingSurfaceInfo(dsi);
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}
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// Unlock the drawing surface
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// You must unlock EACH TIME when done drawing
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ds->Unlock(ds);
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// Free the drawing surface (if not caching it)
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awt.FreeDrawingSurface(ds);
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return (jint) view;
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}
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