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comparison dwtx/draw2d/ScalableLayeredPane.d @ 98:95307ad235d9

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Added Draw2d code, still work in progress
author Frank Benoit <benoit@tionex.de>
date Sun, 03 Aug 2008 00:52:14 +0200
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96:b492ba44e44d 98:95307ad235d9
1 /*******************************************************************************
2 * Copyright (c) 2000, 2005 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 * Port to the D programming language:
11 * Frank Benoit <benoit@tionex.de>
12 *******************************************************************************/
13 module dwtx.draw2d.ScalableLayeredPane;
14
15 import dwt.dwthelper.utils;
16
17 import dwtx.draw2d.geometry.Dimension;
18 import dwtx.draw2d.geometry.Rectangle;
19 import dwtx.draw2d.geometry.Translatable;
20 import dwtx.draw2d.LayeredPane;
21 import dwtx.draw2d.ScalableFigure;
22 import dwtx.draw2d.Graphics;
23 import dwtx.draw2d.ScaledGraphics;
24
25 /**
26 * A non-freeform, scalable layered pane.
27 * @author Eric Bordeau
28 * @since 2.1.1
29 */
30 public class ScalableLayeredPane
31 : LayeredPane
32 , ScalableFigure
33 {
34
35 private double scale = 1.0;
36
37 /**
38 * @see IFigure#getClientArea(Rectangle)
39 */
40 public Rectangle getClientArea(Rectangle rect) {
41 super.getClientArea(rect);
42 rect.width /= scale;
43 rect.height /= scale;
44 rect.x /= scale;
45 rect.y /= scale;
46 return rect;
47 }
48
49 /**
50 * @see Figure#getPreferredSize(int, int)
51 */
52 public Dimension getMinimumSize(int wHint, int hHint) {
53 Dimension d = super.getMinimumSize(cast(int) (wHint / getScale()), cast(int)(hHint / getScale()));
54 int w = getInsets().getWidth();
55 int h = getInsets().getHeight();
56 return d.getExpanded(-w, -h)
57 .scale(scale)
58 .expand(w, h);
59 }
60
61 /**
62 * @see Figure#getPreferredSize(int, int)
63 */
64 public Dimension getPreferredSize(int wHint, int hHint) {
65 Dimension d = super.getPreferredSize(cast(int) (wHint / getScale()), cast(int)(hHint / getScale()));
66 int w = getInsets().getWidth();
67 int h = getInsets().getHeight();
68 return d.getExpanded(-w, -h)
69 .scale(scale)
70 .expand(w, h);
71 }
72
73 /**
74 * Returns the scale level, default is 1.0.
75 * @return the scale level
76 */
77 public double getScale() {
78 return scale;
79 }
80
81 /**
82 * @see dwtx.draw2d.IFigure#isCoordinateSystem()
83 */
84 public bool isCoordinateSystem() {
85 return true;
86 }
87
88 /**
89 * @see dwtx.draw2d.Figure#paintClientArea(Graphics)
90 */
91 protected void paintClientArea(Graphics graphics) {
92 if (getChildren().isEmpty())
93 return;
94 if (scale is 1.0) {
95 super.paintClientArea(graphics);
96 } else {
97 ScaledGraphics g = new ScaledGraphics(graphics);
98 bool optimizeClip = getBorder() is null || getBorder().isOpaque();
99 if (!optimizeClip)
100 g.clipRect(getBounds().getCropped(getInsets()));
101 g.scale(scale);
102 g.pushState();
103 paintChildren(g);
104 g.dispose();
105 graphics.restoreState();
106 }
107 }
108
109 /**
110 * Sets the zoom level
111 * @param newZoom The new zoom level
112 */
113 public void setScale(double newZoom) {
114 if (scale is newZoom)
115 return;
116 scale = newZoom;
117 fireMoved(); //for AncestorListener compatibility
118 revalidate();
119 repaint();
120 }
121
122 /**
123 * @see dwtx.draw2d.Figure#translateFromParent(Translatable)
124 */
125 public void translateFromParent(Translatable t) {
126 t.performScale(1 / scale);
127 }
128
129 /**
130 * @see dwtx.draw2d.Figure#translateToParent(Translatable)
131 */
132 public void translateToParent(Translatable t) {
133 t.performScale(scale);
134 }
135
136 }