1 /******************************************************************************* 2 * Copyright (c) 2011 Google, Inc. 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 * Google, Inc. - initial API and implementation 10 *******************************************************************************/ 11 package org.eclipse.wb.core.controls; 12 13 import org.eclipse.wb.draw2d.IColorConstants; 14 import org.eclipse.wb.internal.core.utils.ui.DrawUtils; 15 16 import org.eclipse.swt.SWT; 17 import org.eclipse.swt.events.PaintEvent; 18 import org.eclipse.swt.events.PaintListener; 19 import org.eclipse.swt.graphics.Color; 20 import org.eclipse.swt.graphics.GC; 21 import org.eclipse.swt.graphics.Image; 22 import org.eclipse.swt.graphics.Rectangle; 23 import org.eclipse.swt.widgets.Canvas; 24 import org.eclipse.swt.widgets.Composite; 25 import org.eclipse.swt.widgets.Event; 26 import org.eclipse.swt.widgets.Listener; 27 28 /** 29 * Class representing flat push button as it looks in Mac OSX. 30 * 31 * It doesn't draw text, not need for now. ;-) 32 * 33 * @author mitin_aa 34 */ 35 public final class CFlatButton extends Canvas { 36 // colors 37 private static final Color COLOR_FACE = DrawUtils.getShiftedColor(IColorConstants.button, 12); 38 private static final Color COLOR_FACE_SELECTED = IColorConstants.buttonDarker; 39 private static final Color COLOR_BORDER_GRADIENT1 = DrawUtils.getShiftedColor( 40 IColorConstants.button, 41 -12); 42 private static final Color COLOR_BORDER_GRADIENT1_SELECTED = DrawUtils.getShiftedColor( 43 IColorConstants.buttonDarker, 44 64); 45 private static final Color COLOR_BORDER_GRADIENT2 = DrawUtils.getShiftedColor(COLOR_FACE, -8); 46 private static final Color COLOR_BORDER_GRADIENT2_SELECTED = DrawUtils.getShiftedColor( 47 COLOR_FACE_SELECTED, 48 -8); 49 // fields 50 private Image m_image; 51 private boolean m_down; 52 private boolean m_selected; 53 54 //////////////////////////////////////////////////////////////////////////// 55 // 56 // Constructor 57 // 58 //////////////////////////////////////////////////////////////////////////// 59 public CFlatButton(Composite parent, int style) { 60 super(parent, style); 61 addPaintListener(new PaintListener() { 62 public void paintControl(PaintEvent e) { 63 boolean isSelected = m_down | m_selected; 64 Color faceColor = isSelected ? COLOR_FACE_SELECTED : COLOR_FACE; 65 Color borderGradientColor1 = 66 isSelected ? COLOR_BORDER_GRADIENT1_SELECTED : COLOR_BORDER_GRADIENT1; 67 Color borderGradientColor2 = 68 isSelected ? COLOR_BORDER_GRADIENT2_SELECTED : COLOR_BORDER_GRADIENT2; 69 GC gc = e.gc; 70 Rectangle ca = getClientArea(); 71 // draw client area 72 // dark border 73 gc.setForeground(IColorConstants.buttonDarker); 74 gc.drawRectangle(ca.x, ca.y, ca.width - 1, ca.height - 1); 75 cropClientArea(ca); 76 // gradient border 77 gc.setForeground(borderGradientColor1); 78 gc.setBackground(borderGradientColor2); 79 gc.fillGradientRectangle(ca.x, ca.y, ca.width, ca.height, true); 80 cropClientArea(ca); 81 // fill background 82 gc.setBackground(faceColor); 83 gc.fillRectangle(ca); 84 // draw face upper-half gradient 85 Rectangle ca1 = getClientArea(); 86 cropClientArea(ca1); 87 gc.setForeground(faceColor); 88 gc.setBackground(borderGradientColor1); 89 gc.fillGradientRectangle(ca1.x, ca1.y, ca1.width, ca1.height / 4, true); 90 // draw face down-half gradient 91 ca1.x += 1; 92 ca1.width -= 2; 93 gc.setForeground(borderGradientColor1); 94 gc.setBackground(faceColor); 95 gc.fillGradientRectangle(ca1.x, ca1.y + ca1.height / 4 - 1, ca1.width, ca1.height / 2, true); 96 // draw image 97 Image image = getImage(); 98 if (image != null) { 99 Rectangle imageBounds = image.getBounds(); 100 // center it in client area 101 int x = ca.x + (ca.width - imageBounds.width) / 2; 102 int y = ca.y + (ca.height - imageBounds.height) / 2; 103 gc.drawImage(image, x, y); 104 } 105 } 106 }); 107 addListener(SWT.MouseDown, new Listener() { 108 public void handleEvent(Event e) { 109 m_down = true; 110 redraw(); 111 } 112 }); 113 addListener(SWT.MouseUp, new Listener() { 114 public void handleEvent(Event e) { 115 m_down = false; 116 redraw(); 117 update(); 118 if (getClientArea().contains(e.x, e.y)) { 119 fireSelectionEvent(e.time, e.stateMask); 120 } 121 } 122 }); 123 } 124 125 //////////////////////////////////////////////////////////////////////////// 126 // 127 // Utils 128 // 129 //////////////////////////////////////////////////////////////////////////// 130 private void fireSelectionEvent(int time, int stateMask) { 131 Event event = new Event(); 132 event.time = time; 133 event.stateMask = stateMask; 134 notifyListeners(SWT.Selection, event); 135 } 136 137 private void cropClientArea(Rectangle ca) { 138 ca.x += 1; 139 ca.y += 1; 140 ca.width -= 2; 141 ca.height -= 2; 142 } 143 144 //////////////////////////////////////////////////////////////////////////// 145 // 146 // Access 147 // 148 //////////////////////////////////////////////////////////////////////////// 149 public final Image getImage() { 150 return m_image; 151 } 152 153 public void setImage(Image image) { 154 m_image = image; 155 } 156 157 public void setSelected(boolean selected) { 158 m_selected = selected; 159 } 160 } 161
