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/*******************************************************************************
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* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* Nokia Corporation - initial implementation
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*******************************************************************************/
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package org.eclipse.swt.internal.extension;
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import org.eclipse.swt.graphics.Internal_GfxPackageSupport;
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import org.eclipse.swt.widgets.Internal_PackageSupport;
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import org.eclipse.swt.widgets.Control;
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import org.eclipse.swt.graphics.Rectangle;
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import org.eclipse.swt.graphics.GC;
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import org.eclipse.swt.internal.qt.graphics.WindowSurface;
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public final class GraphicsUtil {
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/**
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* Ends window surface session started with startExternalRendering() -call.
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* Must be called after the rendering of external renderer has finished.
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*
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* @param gc The gc instance where the rendering is targeted
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*/
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public static void endExternalRendering(GC gc) {
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Internal_GfxPackageSupport.endExternalRendering(gc);
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}
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/**
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* Returns the WindowSurface instance that is the ultimate target of the
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* rendering for the given gc instance.
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*
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* @param gc The gc instance asossiated with the WindowSurface
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* @return The WindowSurface instance that is the target of given gc instance
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*/
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public static WindowSurface getWindowSurface(GC gc) {
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return Internal_GfxPackageSupport.getWindowSurface(gc);
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}
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/**
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* Start a window surface rendering session on the surface that is the
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* target of the given gc instance. This method must be called before
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* rendering to the window surface from external rendering APIs like m3g and m2g.
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* The caller must not render outside the area defined by the returned rectangle,
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* as it may result in rendering on top of other controls.
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*
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* @param gc The gc instance where the rendering is targeted
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* @return The current clip of the gc in window surface coordinates or
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* null if the target of given gc is not a Control
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*/
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public static Rectangle startExternalRendering(GC gc) {
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return Internal_GfxPackageSupport.startExternalRendering(gc);
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}
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/**
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* Converts the given rectangle to window surface coordinates.
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*
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* @param c The Control instance on which coordinates the conversion is done
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* @param rect The rectangle to be converted
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* @return Rectangcular area in window surface coordinates
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*/
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public static Rectangle toWindowSurface(Control c, Rectangle rect) {
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return Internal_PackageSupport.toWindowSurface(c, rect);
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}
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} |