87503 - Implement OSX opengl binding

1 files changed, 116 insertions, 0 deletions

diff --git a/bundles/org.eclipse.swt.opengl/carbon/org/eclipse/swt/opengl/GLCanvas.java b/bundles/org.eclipse.swt.opengl/carbon/org/eclipse/swt/opengl/GLCanvas.java
new file mode 100755
index 0000000000..5fc3576ac2
--- /dev/null
+++ b/bundles/org.eclipse.swt.opengl/carbon/org/eclipse/swt/opengl/GLCanvas.java
@@ -0,0 +1,116 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2005 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.swt.opengl;
+
+import org.eclipse.swt.*;
+import org.eclipse.swt.graphics.*;
+import org.eclipse.swt.widgets.*;
+import org.eclipse.swt.internal.carbon.*;
+import org.eclipse.swt.internal.opengl.carbon.*;
+
+public class GLCanvas extends Canvas {	
+	int glContext;
+	static final int MAX_ATTRIBUTES = 32;
+
+public GLCanvas (Composite parent, int style, GLFormatData data) {
+	super (parent, style);
+	if (data == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
+	int aglAttrib [] = new int [MAX_ATTRIBUTES];
+	int pos = 0;
+	aglAttrib [pos++] = AGL.AGL_RGBA;
+	if (data.doubleBuffer) aglAttrib [pos++] = AGL.AGL_DOUBLEBUFFER;
+	if (data.stereo) aglAttrib [pos++] = AGL.AGL_STEREO;
+	if (data.redSize > 0) {
+		aglAttrib [pos++] = AGL.AGL_RED_SIZE;
+		aglAttrib [pos++] = data.redSize;
+	}
+	if (data.greenSize > 0) {
+		aglAttrib [pos++] = AGL.AGL_GREEN_SIZE;
+		aglAttrib [pos++] = data.greenSize;
+	}
+	if (data.blueSize > 0) {
+		aglAttrib [pos++] = AGL.AGL_BLUE_SIZE;
+		aglAttrib [pos++] = data.blueSize;
+	}
+	if (data.depthSize > 0) {
+		aglAttrib [pos++] = AGL.AGL_DEPTH_SIZE;
+		aglAttrib [pos++] = data.depthSize;
+	}
+	if (data.stencilSize > 0) {
+		aglAttrib [pos++] = AGL.AGL_STENCIL_SIZE;
+		aglAttrib [pos++] = data.stencilSize;
+	}
+	if (data.accumRedSize > 0) {
+		aglAttrib [pos++] = AGL.AGL_ACCUM_RED_SIZE;
+		aglAttrib [pos++] = data.accumRedSize;
+	}
+	if (data.accumGreenSize > 0) {
+		aglAttrib [pos++] = AGL.AGL_ACCUM_GREEN_SIZE;
+		aglAttrib [pos++] = data.accumGreenSize;
+	}
+	if (data.accumBlueSize > 0) {
+		aglAttrib [pos++] = AGL.AGL_ACCUM_BLUE_SIZE;
+		aglAttrib [pos++] = data.accumBlueSize;
+	}
+	if (data.accumAlphaSize > 0) {
+		aglAttrib [pos++] = AGL.AGL_ACCUM_ALPHA_SIZE;
+		aglAttrib [pos++] = data.accumAlphaSize;
+	}
+	if (data.sampleBuffers > 0) {
+		aglAttrib [pos++] = AGL.AGL_SAMPLE_BUFFERS_ARB;
+		aglAttrib [pos++] = data.sampleBuffers;
+	}
+	if (data.samples > 0) {
+		aglAttrib [pos++] = AGL.AGL_SAMPLES_ARB;
+		aglAttrib [pos++] = data.samples;
+	}
+	aglAttrib [pos++] = AGL.AGL_NONE;
+	int pixelFormat = AGL.aglChoosePixelFormat (0, 0, aglAttrib);
+	glContext = AGL.aglCreateContext (pixelFormat, 0);
+	int window = OS.GetControlOwner (handle);
+	int port = OS.GetWindowPort (window);
+	AGL.aglSetDrawable (glContext, port);
+
+	Listener listener = new Listener () {
+		public void handleEvent (Event event) {
+			switch (event.type) {
+			case SWT.Resize: handleResize (event); break;
+			}
+		}
+	};	
+	addListener (SWT.Resize, listener);
+}
+
+void handleResize (Event event) {
+	Rectangle bounds = getBounds ();
+	AGL.aglUpdateContext (glContext);
+	int[] glbounds = new int[4];
+	glbounds[0] = bounds.x;
+	glbounds[1] = bounds.y;
+	glbounds[2] = bounds.width;
+	glbounds[3] = bounds.height;
+	AGL.aglSetInteger (glContext, AGL.AGL_BUFFER_RECT, glbounds);
+	AGL.aglEnable (glContext, AGL.AGL_BUFFER_RECT);
+}
+
+public boolean isCurrent () {
+	return AGL.aglGetCurrentContext () == glContext;
+}
+
+public void setCurrent () {
+	if (AGL.aglGetCurrentContext () == glContext) return;
+	AGL.aglSetCurrentContext (glContext);
+}
+
+public void swapBuffers () {
+	AGL.aglSwapBuffers (glContext);
+}
+}