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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2007 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module dwtexamples.controlexample.StyledTextTab;
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14
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15
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16 import dwt.dwthelper.ByteArrayInputStream;
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17
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18
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19 import dwt.DWT;
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20 import dwt.custom.StyleRange;
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21 import dwt.custom.StyledText;
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22 import dwt.events.ControlAdapter;
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23 import dwt.events.ControlEvent;
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24 import dwt.events.DisposeEvent;
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25 import dwt.events.DisposeListener;
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26 import dwt.events.SelectionAdapter;
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27 import dwt.events.SelectionEvent;
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28 import dwt.events.SelectionListener;
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29 import dwt.graphics.Color;
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30 import dwt.graphics.Image;
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31 import dwt.graphics.ImageData;
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32 import dwt.graphics.Point;
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33 import dwt.layout.GridData;
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34 import dwt.layout.GridLayout;
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35 import dwt.widgets.Button;
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36 import dwt.widgets.Composite;
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37 import dwt.widgets.Display;
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38 import dwt.widgets.Group;
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39 import dwt.widgets.Label;
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40 import dwt.widgets.TabFolder;
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41 import dwt.widgets.Widget;
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42
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43 import dwtexamples.controlexample.ScrollableTab;
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44 import dwtexamples.controlexample.ControlExample;
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45 import tango.core.Exception;
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46 import tango.io.Stdout;
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47
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48 class StyledTextTab : ScrollableTab {
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49 /* Example widgets and groups that contain them */
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50 StyledText styledText;
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51 Group styledTextGroup, styledTextStyleGroup;
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52
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53 /* Style widgets added to the "Style" group */
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54 Button wrapButton, readOnlyButton, fullSelectionButton;
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55
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56 /* Buttons for adding StyleRanges to StyledText */
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57 Button boldButton, italicButton, redButton, yellowButton, underlineButton, strikeoutButton;
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58 Image boldImage, italicImage, redImage, yellowImage, underlineImage, strikeoutImage;
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59
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60 /* Variables for saving state. */
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61 char[] text;
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62 StyleRange[] styleRanges;
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63
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64 /**
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65 * Creates the Tab within a given instance of ControlExample.
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66 */
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67 this(ControlExample instance) {
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68 super(instance);
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69 }
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70
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71 /**
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72 * Creates a bitmap image.
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73 */
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74 Image createBitmapImage (Display display, void[] sourceData, void[] maskData ) {
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75 InputStream sourceStream = new ByteArrayInputStream ( cast(byte[])sourceData );
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76 InputStream maskStream = new ByteArrayInputStream ( cast(byte[])maskData );
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77 ImageData source = new ImageData (sourceStream);
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78 ImageData mask = new ImageData (maskStream);
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79 Image result = new Image (display, source, mask);
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80 try {
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81 sourceStream.close ();
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82 maskStream.close ();
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83 } catch (IOException e) {
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84 Stderr.formatln( "Stacktrace: {}", e );
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85 }
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86 return result;
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87 }
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88
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89 /**
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90 * Creates the "Control" widget children.
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91 */
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92 void createControlWidgets () {
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93 super.createControlWidgets ();
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94
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95 /* Add a group for modifying the StyledText widget */
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96 createStyledTextStyleGroup ();
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97 }
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98
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99 /**
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100 * Creates the "Example" group.
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101 */
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102 void createExampleGroup () {
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103 super.createExampleGroup ();
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104
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105 /* Create a group for the styled text widget */
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106 styledTextGroup = new Group (exampleGroup, DWT.NONE);
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107 styledTextGroup.setLayout (new GridLayout ());
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108 styledTextGroup.setLayoutData (new GridData (DWT.FILL, DWT.FILL, true, true));
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109 styledTextGroup.setText ("StyledText");
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110 }
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111
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112 /**
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113 * Creates the "Example" widgets.
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114 */
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115 void createExampleWidgets () {
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116
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117 /* Compute the widget style */
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118 int style = getDefaultStyle();
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119 if (singleButton.getSelection ()) style |= DWT.SINGLE;
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120 if (multiButton.getSelection ()) style |= DWT.MULTI;
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121 if (horizontalButton.getSelection ()) style |= DWT.H_SCROLL;
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122 if (verticalButton.getSelection ()) style |= DWT.V_SCROLL;
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123 if (wrapButton.getSelection ()) style |= DWT.WRAP;
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124 if (readOnlyButton.getSelection ()) style |= DWT.READ_ONLY;
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125 if (borderButton.getSelection ()) style |= DWT.BORDER;
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126 if (fullSelectionButton.getSelection ()) style |= DWT.FULL_SELECTION;
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127
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128 /* Create the example widgets */
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129 styledText = new StyledText (styledTextGroup, style);
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130 styledText.setText (ControlExample.getResourceString("Example_string"));
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131 styledText.append ("\n");
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132 styledText.append (ControlExample.getResourceString("One_Two_Three"));
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133
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134 if (text !is null) {
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135 styledText.setText(text);
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136 text = null;
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137 }
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138 if (styleRanges !is null) {
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139 styledText.setStyleRanges(styleRanges);
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140 styleRanges = null;
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141 }
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142 }
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143
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144 /**
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145 * Creates the "Style" group.
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146 */
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147 void createStyleGroup() {
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148 super.createStyleGroup();
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149
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150 /* Create the extra widgets */
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151 wrapButton = new Button (styleGroup, DWT.CHECK);
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152 wrapButton.setText ("DWT.WRAP");
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153 readOnlyButton = new Button (styleGroup, DWT.CHECK);
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154 readOnlyButton.setText ("DWT.READ_ONLY");
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155 fullSelectionButton = new Button (styleGroup, DWT.CHECK);
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156 fullSelectionButton.setText ("DWT.FULL_SELECTION");
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157 }
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158
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159 /**
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160 * Creates the "StyledText Style" group.
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161 */
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162 void createStyledTextStyleGroup () {
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163 styledTextStyleGroup = new Group (controlGroup, DWT.NONE);
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164 styledTextStyleGroup.setText (ControlExample.getResourceString ("StyledText_Styles"));
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165 styledTextStyleGroup.setLayout (new GridLayout(6, false));
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166 GridData data = new GridData (GridData.HORIZONTAL_ALIGN_FILL);
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167 data.horizontalSpan = 2;
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168 styledTextStyleGroup.setLayoutData (data);
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169
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170 /* Get images */
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171 boldImage = createBitmapImage (display, import("bold.bmp"), import("bold_mask.bmp"));
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172 italicImage = createBitmapImage (display, import("italic.bmp"), import("italic_mask.bmp"));
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173 redImage = createBitmapImage (display, import("red.bmp"), import("red_mask.bmp"));
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174 yellowImage = createBitmapImage (display, import("yellow.bmp"), import("yellow_mask.bmp"));
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175 underlineImage = createBitmapImage (display, import("underline.bmp"), import("underline_mask.bmp"));
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176 strikeoutImage = createBitmapImage (display, import("strikeout.bmp"), import("strikeout_mask.bmp"));
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177
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178 /* Create controls to modify the StyledText */
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179 Label label = new Label (styledTextStyleGroup, DWT.NONE);
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180 label.setText (ControlExample.getResourceString ("StyledText_Style_Instructions"));
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181 label.setLayoutData(new GridData(DWT.FILL, DWT.CENTER, false, false, 6, 1));
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182 label = new Label (styledTextStyleGroup, DWT.NONE);
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183 label.setText (ControlExample.getResourceString ("Bold"));
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184 label.setLayoutData(new GridData(DWT.END, DWT.CENTER, true, false));
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185 boldButton = new Button (styledTextStyleGroup, DWT.PUSH);
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186 boldButton.setImage (boldImage);
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187 label = new Label (styledTextStyleGroup, DWT.NONE);
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188 label.setText (ControlExample.getResourceString ("Underline"));
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189 label.setLayoutData(new GridData(DWT.END, DWT.CENTER, true, false));
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190 underlineButton = new Button (styledTextStyleGroup, DWT.PUSH);
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191 underlineButton.setImage (underlineImage);
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192 label = new Label (styledTextStyleGroup, DWT.NONE);
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193 label.setText (ControlExample.getResourceString ("Foreground_Style"));
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194 label.setLayoutData(new GridData(DWT.END, DWT.CENTER, true, false));
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195 redButton = new Button (styledTextStyleGroup, DWT.PUSH);
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196 redButton.setImage (redImage);
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197 label = new Label (styledTextStyleGroup, DWT.NONE);
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198 label.setText (ControlExample.getResourceString ("Italic"));
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199 label.setLayoutData(new GridData(DWT.END, DWT.CENTER, true, false));
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200 italicButton = new Button (styledTextStyleGroup, DWT.PUSH);
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201 italicButton.setImage (italicImage);
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202 label = new Label (styledTextStyleGroup, DWT.NONE);
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203 label.setText (ControlExample.getResourceString ("Strikeout"));
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204 label.setLayoutData(new GridData(DWT.END, DWT.CENTER, true, false));
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205 strikeoutButton = new Button (styledTextStyleGroup, DWT.PUSH);
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206 strikeoutButton.setImage (strikeoutImage);
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207 label = new Label (styledTextStyleGroup, DWT.NONE);
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208 label.setText (ControlExample.getResourceString ("Background_Style"));
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209 label.setLayoutData(new GridData(DWT.END, DWT.CENTER, true, false));
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210 yellowButton = new Button (styledTextStyleGroup, DWT.PUSH);
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211 yellowButton.setImage (yellowImage);
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212 SelectionListener styleListener = new class() SelectionAdapter {
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213 public void widgetSelected (SelectionEvent e) {
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214 Point sel = styledText.getSelectionRange();
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215 if ((sel is null) || (sel.y is 0)) return;
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216 StyleRange style;
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217 for (int i = sel.x; i<sel.x+sel.y; i++) {
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218 StyleRange range = styledText.getStyleRangeAtOffset(i);
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219 if (range !is null) {
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220 style = cast(StyleRange)range.clone();
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221 style.start = i;
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222 style.length = 1;
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223 } else {
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224 style = new StyleRange(i, 1, null, null, DWT.NORMAL);
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225 }
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226 if (e.widget is boldButton) {
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227 style.fontStyle ^= DWT.BOLD;
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228 } else if (e.widget is italicButton) {
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229 style.fontStyle ^= DWT.ITALIC;
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230 } else if (e.widget is underlineButton) {
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231 style.underline = !style.underline;
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232 } else if (e.widget is strikeoutButton) {
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233 style.strikeout = !style.strikeout;
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234 }
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235 styledText.setStyleRange(style);
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236 }
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237 styledText.setSelectionRange(sel.x + sel.y, 0);
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238 }
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239 };
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240 SelectionListener colorListener = new class() SelectionAdapter {
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241 public void widgetSelected (SelectionEvent e) {
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242 Point sel = styledText.getSelectionRange();
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243 if ((sel is null) || (sel.y is 0)) return;
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244 Color fg = null, bg = null;
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245 if (e.widget is redButton) {
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246 fg = display.getSystemColor (DWT.COLOR_RED);
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247 } else if (e.widget is yellowButton) {
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248 bg = display.getSystemColor (DWT.COLOR_YELLOW);
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249 }
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250 StyleRange style;
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251 for (int i = sel.x; i<sel.x+sel.y; i++) {
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252 StyleRange range = styledText.getStyleRangeAtOffset(i);
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253 if (range !is null) {
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254 style = cast(StyleRange)range.clone();
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255 style.start = i;
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256 style.length = 1;
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257 style.foreground = style.foreground !is null ? null : fg;
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258 style.background = style.background !is null ? null : bg;
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259 } else {
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260 style = new StyleRange (i, 1, fg, bg, DWT.NORMAL);
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261 }
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262 styledText.setStyleRange(style);
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263 }
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264 styledText.setSelectionRange(sel.x + sel.y, 0);
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265 }
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266 };
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267 boldButton.addSelectionListener(styleListener);
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268 italicButton.addSelectionListener(styleListener);
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269 underlineButton.addSelectionListener(styleListener);
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270 strikeoutButton.addSelectionListener(styleListener);
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271 redButton.addSelectionListener(colorListener);
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272 yellowButton.addSelectionListener(colorListener);
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273 yellowButton.addDisposeListener(new class() DisposeListener {
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274 public void widgetDisposed (DisposeEvent e) {
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275 boldImage.dispose();
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276 italicImage.dispose();
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277 redImage.dispose();
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278 yellowImage.dispose();
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279 underlineImage.dispose();
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280 strikeoutImage.dispose();
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281 }
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282 });
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283 }
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284
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285 /**
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286 * Creates the tab folder page.
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287 *
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288 * @param tabFolder org.eclipse.swt.widgets.TabFolder
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289 * @return the new page for the tab folder
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290 */
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291 Composite createTabFolderPage (TabFolder tabFolder) {
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292 super.createTabFolderPage (tabFolder);
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293
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294 /*
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295 * Add a resize listener to the tabFolderPage so that
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296 * if the user types into the example widget to change
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297 * its preferred size, and then resizes the shell, we
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298 * recalculate the preferred size correctly.
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299 */
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300 tabFolderPage.addControlListener(new class() ControlAdapter {
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301 public void controlResized(ControlEvent e) {
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302 setExampleWidgetSize ();
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303 }
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304 });
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305
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306 return tabFolderPage;
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307 }
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308
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309 /**
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310 * Disposes the "Example" widgets.
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311 */
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312 void disposeExampleWidgets () {
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313 /* store the state of the styledText if applicable */
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314 if (styledText !is null) {
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315 styleRanges = styledText.getStyleRanges();
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316 text = styledText.getText();
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317 }
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318 super.disposeExampleWidgets();
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319 }
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320
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321 /**
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322 * Gets the "Example" widget children.
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323 */
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324 Widget [] getExampleWidgets () {
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325 return [ cast(Widget) styledText];
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326 }
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327
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328 /**
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329 * Returns a list of set/get API method names (without the set/get prefix)
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330 * that can be used to set/get values in the example control(s).
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331 */
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332 char[][] getMethodNames() {
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333 return ["CaretOffset", "DoubleClickEnabled", "Editable", "HorizontalIndex", "HorizontalPixel", "Orientation", "Selection", "Tabs", "Text", "TextLimit", "ToolTipText", "TopIndex", "TopPixel", "WordWrap"];
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334 }
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335
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336
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337 /**
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338 * Gets the text for the tab folder item.
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339 */
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340 char[] getTabText () {
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341 return "StyledText";
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342 }
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343
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344 /**
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345 * Sets the state of the "Example" widgets.
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346 */
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347 void setExampleWidgetState () {
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348 super.setExampleWidgetState ();
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349 wrapButton.setSelection ((styledText.getStyle () & DWT.WRAP) !is 0);
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350 readOnlyButton.setSelection ((styledText.getStyle () & DWT.READ_ONLY) !is 0);
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351 fullSelectionButton.setSelection ((styledText.getStyle () & DWT.FULL_SELECTION) !is 0);
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352 horizontalButton.setEnabled ((styledText.getStyle () & DWT.MULTI) !is 0);
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353 verticalButton.setEnabled ((styledText.getStyle () & DWT.MULTI) !is 0);
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354 wrapButton.setEnabled ((styledText.getStyle () & DWT.MULTI) !is 0);
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355 }
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356 }
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