Mercurial > projects > dwt-addons
diff dwtx/draw2d/ScalableFreeformLayeredPane.d @ 98:95307ad235d9
Added Draw2d code, still work in progress
author | Frank Benoit <benoit@tionex.de> |
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date | Sun, 03 Aug 2008 00:52:14 +0200 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/dwtx/draw2d/ScalableFreeformLayeredPane.d Sun Aug 03 00:52:14 2008 +0200 @@ -0,0 +1,117 @@ +/******************************************************************************* + * 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 + * Port to the D programming language: + * Frank Benoit <benoit@tionex.de> + *******************************************************************************/ +module dwtx.draw2d.ScalableFreeformLayeredPane; + +import dwt.dwthelper.utils; + +import dwtx.draw2d.geometry.Rectangle; +import dwtx.draw2d.geometry.Translatable; +import dwtx.draw2d.FreeformLayeredPane; +import dwtx.draw2d.ScalableFigure; +import dwtx.draw2d.Graphics; +import dwtx.draw2d.ScaledGraphics; + +/** + * @author hudsonr + * @since 2.1 + */ +public class ScalableFreeformLayeredPane + : FreeformLayeredPane + , ScalableFigure +{ + +private double scale = 1.0; + +/** + * @see dwtx.draw2d.Figure#getClientArea() + */ +public Rectangle getClientArea(Rectangle rect) { + super.getClientArea(rect); + rect.width /= scale; + rect.height /= scale; + rect.x /= scale; + rect.y /= scale; + return rect; +} + +/** + * Returns the current zoom scale level. + * @return the scale + */ +public double getScale() { + return scale; +} + +/** + * @see dwtx.draw2d.IFigure#isCoordinateSystem() + */ +public bool isCoordinateSystem() { + return true; +} + +/** + * @see dwtx.draw2d.Figure#paintClientArea(Graphics) + */ +protected void paintClientArea(Graphics graphics) { + if (getChildren().isEmpty()) + return; + if (scale is 1.0) { + super.paintClientArea(graphics); + } else { + ScaledGraphics g = new ScaledGraphics(graphics); + bool optimizeClip = getBorder() is null || getBorder().isOpaque(); + if (!optimizeClip) + g.clipRect(getBounds().getCropped(getInsets())); + g.scale(scale); + g.pushState(); + paintChildren(g); + g.dispose(); + graphics.restoreState(); + } +} + +/** + * Sets the zoom level + * @param newZoom The new zoom level + */ +public void setScale(double newZoom) { + if (scale is newZoom) + return; + scale = newZoom; + superFireMoved(); //For AncestorListener compatibility + getFreeformHelper().invalidate(); + repaint(); +} + +/** + * @see dwtx.draw2d.Figure#translateToParent(Translatable) + */ +public void translateToParent(Translatable t) { + t.performScale(scale); +} + +/** + * @see dwtx.draw2d.Figure#translateFromParent(Translatable) + */ +public void translateFromParent(Translatable t) { + t.performScale(1 / scale); +} + +/** + * @see dwtx.draw2d.Figure#useLocalCoordinates() + */ +protected final bool useLocalCoordinates() { + return false; +} + +}