diff options
Diffstat (limited to 'bundles/org.eclipse.swt.opengl/win32/org/eclipse/swt/opengl/GLContext.java')
-rw-r--r-- | bundles/org.eclipse.swt.opengl/win32/org/eclipse/swt/opengl/GLContext.java | 313 |
1 files changed, 0 insertions, 313 deletions
diff --git a/bundles/org.eclipse.swt.opengl/win32/org/eclipse/swt/opengl/GLContext.java b/bundles/org.eclipse.swt.opengl/win32/org/eclipse/swt/opengl/GLContext.java deleted file mode 100644 index b2863df75c..0000000000 --- a/bundles/org.eclipse.swt.opengl/win32/org/eclipse/swt/opengl/GLContext.java +++ /dev/null @@ -1,313 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2000, 2003 IBM Corporation and others. - * All rights reserved. This program and the accompanying materials - * are made available under the terms of the Common Public License v1.0 - * which accompanies this distribution, and is available at - * http://www.eclipse.org/legal/cpl-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.opengl.internal.win32.*; -import org.eclipse.swt.internal.win32.*; - -/** - * Instances of <code>GLContext</code> are used to draw on swt <code>Drawable</code>s - * through invocations of provided OpenGL functions. - * <p> - * Application code must explicitly invoke the <code>GLContext.dispose ()</code> - * method to release the operating system resources managed by each instance - * when those instances are no longer required. This is <em>particularly</em> - * important on Windows95 and Windows98 where the operating system has a limited - * number of device contexts available. - * </p> - */ -public class GLContext { - int handle; - int hDC; - GCData data; - Drawable drawable; - int selectBufferPtr = 0; - - static final int MSB_FIRST = 1; - static final int LSB_FIRST = 2; - - /** - * Constructs a new instance of this class which has been - * configured to draw on the specified drawable. - * <p> - * You must dispose the <code>GLContext</code> when it is no longer required. - * </p> - * - * @param drawable the drawable to draw on - * @exception IllegalArgumentException <ul> - * <li>ERROR_NULL_ARGUMENT - if the drawable is null</li> - * </ul> - * @exception SWTError <ul> - * <li>ERROR_NO_HANDLES if a handle could not be obtained for gc creation</li> - * <li>ERROR_UNSUPPORTED_DEPTH - if the current display depth is not supported</li> - * </ul> - */ - public GLContext (Drawable drawable) { - if (drawable == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); - this.drawable = drawable; - this.data = new GCData (); - hDC = drawable.internal_new_GC (data); - if (hDC == 0) SWT.error (SWT.ERROR_NO_HANDLES); - int bits = OS.GetDeviceCaps (hDC, OS.BITSPIXEL); - int planes = OS.GetDeviceCaps (hDC, OS.PLANES); - int depth = bits * planes; - PIXELFORMATDESCRIPTOR pfd = new PIXELFORMATDESCRIPTOR (); - pfd.nSize = (short) PIXELFORMATDESCRIPTOR.sizeof; - pfd.nVersion = 1; - pfd.dwFlags = - WGL.PFD_DRAW_TO_WINDOW - | WGL.PFD_SUPPORT_OPENGL - | WGL.PFD_DOUBLEBUFFER; - pfd.dwLayerMask = WGL.PFD_MAIN_PLANE; - pfd.iPixelType = (byte) WGL.PFD_TYPE_RGBA; - pfd.cColorBits = (byte) depth; - pfd.cDepthBits = (byte) depth; - pfd.cAccumBits = 0; - pfd.cStencilBits = 0; - int pixelFormat = WGL.ChoosePixelFormat (hDC, pfd); - if (pixelFormat == 0) { - drawable.internal_dispose_GC (hDC, data); - SWT.error (SWT.ERROR_UNSUPPORTED_DEPTH); - } - if (!WGL.SetPixelFormat (hDC, pixelFormat, pfd)) { - drawable.internal_dispose_GC (hDC, data); - SWT.error (SWT.ERROR_UNSUPPORTED_DEPTH); - } - handle = WGL.wglCreateContext (hDC); - if (handle == 0) SWT.error (SWT.ERROR_NO_HANDLES); - } - - public ImageData convertImageData (ImageData source) { - PaletteData palette = new PaletteData (0xff0000, 0xff00, 0xff); - ImageData newSource = new ImageData (source.width, source.height, 24, palette); - - ImageDataUtil.blit ( - 1, - source.data, - source.depth, - source.bytesPerLine, - (source.depth != 16) ? MSB_FIRST : LSB_FIRST, - 0, - 0, - source.width, - source.height, - source.palette.redMask, - source.palette.greenMask, - source.palette.blueMask, - 255, - null, - 0, - 0, - 0, - newSource.data, - newSource.depth, - newSource.bytesPerLine, - (newSource.depth != 16) ? MSB_FIRST : LSB_FIRST, - 0, - 0, - newSource.width, - newSource.height, - newSource.palette.redMask, - newSource.palette.greenMask, - newSource.palette.blueMask, - false, - true); - - return newSource; - } - - /** - * Disposes of the operating system resources associated with - * the receiver. Applications must dispose of all <code>GLContext</code>s - * that they allocate. - */ - public void dispose () { - if (handle == 0) return; - if (WGL.wglGetCurrentContext () == handle) { - WGL.wglMakeCurrent (0, 0); - } - WGL.wglDeleteContext (handle); - handle = 0; - - // drawable may be disposed - try { - drawable.internal_dispose_GC (hDC, data); - } catch (SWTException e) { - } - int hHeap = OS.GetProcessHeap (); - if (selectBufferPtr != 0) { - OS.HeapFree (hHeap, 0, selectBufferPtr); - } - hDC = 0; - drawable = null; - data.device = null; - data = null; - } - - public int[] getSelectBuffer (int selectBufferPtr, int[] selectBuffer) { - OS.MoveMemory (selectBuffer, selectBufferPtr, selectBuffer.length * 4); - return selectBuffer; - } - - public int getSelectBufferPtr (int[] selectBuffer) { - if (selectBufferPtr == 0) { - int hHeap = OS.GetProcessHeap (); - selectBufferPtr = - OS.HeapAlloc ( - hHeap, - OS.HEAP_ZERO_MEMORY, - selectBuffer.length * 4); - } - OS.MoveMemory (selectBufferPtr, selectBuffer, selectBuffer.length * 4); - return selectBufferPtr; - } - - /** - * Returns a boolean indicating whether the receiver is the current - * <code>GLContext</code>. - * - * @return true if the receiver is the current <code>GLContext</code>, - * false otherwise - * @exception SWTError <ul> - * <li>ERROR_GRAPHIC_DISPOSED if the receiver is disposed</li> - * </ul> - */ - public boolean isCurrent () { - if (isDisposed ()) SWT.error (SWT.ERROR_GRAPHIC_DISPOSED); - return WGL.wglGetCurrentContext () == handle; - } - - /** - * Returns a boolean indicating whether the <code>GLContext</code> has been - * disposed. - * <p> - * This method gets the dispose state for the <code>GLContext</code>. - * When a <code>GLContext</code> has been disposed, it is an error to - * invoke any other method using the <code>GLContext</code>. - * - * @return true if the <code>GLContext</code> is disposed, false otherwise - */ - public boolean isDisposed () { - return handle == 0; - } - - /** - * Loads the specified bitmap font. - * - * @param fdata - * @param device - * @param base - * @param first - * @param count - */ - public void loadBitmapFont (FontData fdata, Device device, int base, int first, int count) { - Font font = new Font (device, fdata); - int oldFont = OS.SelectObject (hDC, font.handle); - WGL.wglUseFontBitmaps (hDC, first, count, base); - OS.SelectObject (hDC, oldFont); - font.dispose (); - } - - /** - * Loads the specified outline font. - * - * @param fdata - * @param device - * @param base - * @param first - * @param count - * @param deviation - * @param extrusion - * @param format - * @param lpgmf - */ - public void loadOutlineFont (FontData fdata, Device device, int base, int first, - int count, float deviation, float extrusion, int format, GLYPHMETRICSFLOAT[] lpgmf) { - int ptr = 0; - int hHeap = 0; - if (lpgmf != null && lpgmf.length == count + 1) { - hHeap = OS.GetProcessHeap (); - ptr = - OS.HeapAlloc ( - hHeap, - OS.HEAP_ZERO_MEMORY, - count * GLYPHMETRICSFLOAT.sizeof); - } - - if (format == GL.GL_POLYGON) { - format = WGL.WGL_FONT_POLYGONS; - } - if (format == GL.GL_LINE) { - format = WGL.WGL_FONT_LINES; - } - - Font font = new Font (device, fdata); - int oldFont = OS.SelectObject (hDC, font.handle); - WGL.wglUseFontOutlines (hDC, first, count, base, deviation, extrusion, format, ptr); - OS.SelectObject (hDC, oldFont); - font.dispose (); - if (ptr != 0) { - int sizeof = GLYPHMETRICSFLOAT.sizeof; - for (int i = 0; i < lpgmf.length; i++) { - WGL.MoveMemory (lpgmf [i], ptr + (sizeof * i), sizeof); - }; - OS.HeapFree (hHeap, 0, ptr); - } - } - - /** - * Resizes the receiver. - * - * @param x - * @param y - * @param width - * @param height - */ - public void resize (int x, int y, int width, int height) { - if (height == 0) height = 1; - GL.glViewport (0, 0, width, height); - float nRange = 200.0f; - GL.glMatrixMode (GL.GL_PROJECTION); - GL.glLoadIdentity (); - // load projection - GLU.gluPerspective (45.0f, (float) width / (float) height, 0.1f, 100.0f); - GL.glMatrixMode (GL.GL_MODELVIEW); - GL.glLoadIdentity (); - } - - /** - * Sets the receiver to be the current <code>GLContext</code>. - * - * @exception SWTError <ul> - * <li>ERROR_GRAPHIC_DISPOSED if the receiver is disposed</li> - * </ul> - */ - public void setCurrent () { - if (isDisposed ()) SWT.error (SWT.ERROR_GRAPHIC_DISPOSED); - if (WGL.wglGetCurrentContext () == handle) return; - WGL.wglMakeCurrent (hDC, handle); - } - - /** - * Swaps the receiver's buffers. - * - * @exception SWTError <ul> - * <li>ERROR_GRAPHIC_DISPOSED if the receiver is disposed</li> - * </ul> - */ - public void swapBuffers () { - if (isDisposed ()) SWT.error (SWT.ERROR_GRAPHIC_DISPOSED); - WGL.SwapBuffers (hDC); - } -} |