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comparison dwtexamples/controlexample/StyledTextTab.d @ 0:052c3aebd1d3

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initial import
author Frank Benoit <benoit@tionex.de>
date Fri, 01 Feb 2008 21:46:26 +0100
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1 /*******************************************************************************
2 * Copyright (c) 2000, 2007 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 dwtexamples.controlexample.StyledTextTab;
14
15
16 import dwt.dwthelper.ByteArrayInputStream;
17
18
19 import dwt.DWT;
20 import dwt.custom.StyleRange;
21 import dwt.custom.StyledText;
22 import dwt.events.ControlAdapter;
23 import dwt.events.ControlEvent;
24 import dwt.events.DisposeEvent;
25 import dwt.events.DisposeListener;
26 import dwt.events.SelectionAdapter;
27 import dwt.events.SelectionEvent;
28 import dwt.events.SelectionListener;
29 import dwt.graphics.Color;
30 import dwt.graphics.Image;
31 import dwt.graphics.ImageData;
32 import dwt.graphics.Point;
33 import dwt.layout.GridData;
34 import dwt.layout.GridLayout;
35 import dwt.widgets.Button;
36 import dwt.widgets.Composite;
37 import dwt.widgets.Display;
38 import dwt.widgets.Group;
39 import dwt.widgets.Label;
40 import dwt.widgets.TabFolder;
41 import dwt.widgets.Widget;
42
43 import dwtexamples.controlexample.ScrollableTab;
44 import dwtexamples.controlexample.ControlExample;
45 import tango.core.Exception;
46 import tango.io.Stdout;
47
48 class StyledTextTab : ScrollableTab {
49 /* Example widgets and groups that contain them */
50 StyledText styledText;
51 Group styledTextGroup, styledTextStyleGroup;
52
53 /* Style widgets added to the "Style" group */
54 Button wrapButton, readOnlyButton, fullSelectionButton;
55
56 /* Buttons for adding StyleRanges to StyledText */
57 Button boldButton, italicButton, redButton, yellowButton, underlineButton, strikeoutButton;
58 Image boldImage, italicImage, redImage, yellowImage, underlineImage, strikeoutImage;
59
60 /* Variables for saving state. */
61 char[] text;
62 StyleRange[] styleRanges;
63
64 /**
65 * Creates the Tab within a given instance of ControlExample.
66 */
67 this(ControlExample instance) {
68 super(instance);
69 }
70
71 /**
72 * Creates a bitmap image.
73 */
74 Image createBitmapImage (Display display, void[] sourceData, void[] maskData ) {
75 InputStream sourceStream = new ByteArrayInputStream ( cast(byte[])sourceData );
76 InputStream maskStream = new ByteArrayInputStream ( cast(byte[])maskData );
77 ImageData source = new ImageData (sourceStream);
78 ImageData mask = new ImageData (maskStream);
79 Image result = new Image (display, source, mask);
80 try {
81 sourceStream.close ();
82 maskStream.close ();
83 } catch (IOException e) {
84 Stderr.formatln( "Stacktrace: {}", e );
85 }
86 return result;
87 }
88
89 /**
90 * Creates the "Control" widget children.
91 */
92 void createControlWidgets () {
93 super.createControlWidgets ();
94
95 /* Add a group for modifying the StyledText widget */
96 createStyledTextStyleGroup ();
97 }
98
99 /**
100 * Creates the "Example" group.
101 */
102 void createExampleGroup () {
103 super.createExampleGroup ();
104
105 /* Create a group for the styled text widget */
106 styledTextGroup = new Group (exampleGroup, DWT.NONE);
107 styledTextGroup.setLayout (new GridLayout ());
108 styledTextGroup.setLayoutData (new GridData (DWT.FILL, DWT.FILL, true, true));
109 styledTextGroup.setText ("StyledText");
110 }
111
112 /**
113 * Creates the "Example" widgets.
114 */
115 void createExampleWidgets () {
116
117 /* Compute the widget style */
118 int style = getDefaultStyle();
119 if (singleButton.getSelection ()) style |= DWT.SINGLE;
120 if (multiButton.getSelection ()) style |= DWT.MULTI;
121 if (horizontalButton.getSelection ()) style |= DWT.H_SCROLL;
122 if (verticalButton.getSelection ()) style |= DWT.V_SCROLL;
123 if (wrapButton.getSelection ()) style |= DWT.WRAP;
124 if (readOnlyButton.getSelection ()) style |= DWT.READ_ONLY;
125 if (borderButton.getSelection ()) style |= DWT.BORDER;
126 if (fullSelectionButton.getSelection ()) style |= DWT.FULL_SELECTION;
127
128 /* Create the example widgets */
129 styledText = new StyledText (styledTextGroup, style);
130 styledText.setText (ControlExample.getResourceString("Example_string"));
131 styledText.append ("\n");
132 styledText.append (ControlExample.getResourceString("One_Two_Three"));
133
134 if (text !is null) {
135 styledText.setText(text);
136 text = null;
137 }
138 if (styleRanges !is null) {
139 styledText.setStyleRanges(styleRanges);
140 styleRanges = null;
141 }
142 }
143
144 /**
145 * Creates the "Style" group.
146 */
147 void createStyleGroup() {
148 super.createStyleGroup();
149
150 /* Create the extra widgets */
151 wrapButton = new Button (styleGroup, DWT.CHECK);
152 wrapButton.setText ("DWT.WRAP");
153 readOnlyButton = new Button (styleGroup, DWT.CHECK);
154 readOnlyButton.setText ("DWT.READ_ONLY");
155 fullSelectionButton = new Button (styleGroup, DWT.CHECK);
156 fullSelectionButton.setText ("DWT.FULL_SELECTION");
157 }
158
159 /**
160 * Creates the "StyledText Style" group.
161 */
162 void createStyledTextStyleGroup () {
163 styledTextStyleGroup = new Group (controlGroup, DWT.NONE);
164 styledTextStyleGroup.setText (ControlExample.getResourceString ("StyledText_Styles"));
165 styledTextStyleGroup.setLayout (new GridLayout(6, false));
166 GridData data = new GridData (GridData.HORIZONTAL_ALIGN_FILL);
167 data.horizontalSpan = 2;
168 styledTextStyleGroup.setLayoutData (data);
169
170 /* Get images */
171 boldImage = createBitmapImage (display, import("bold.bmp"), import("bold_mask.bmp"));
172 italicImage = createBitmapImage (display, import("italic.bmp"), import("italic_mask.bmp"));
173 redImage = createBitmapImage (display, import("red.bmp"), import("red_mask.bmp"));
174 yellowImage = createBitmapImage (display, import("yellow.bmp"), import("yellow_mask.bmp"));
175 underlineImage = createBitmapImage (display, import("underline.bmp"), import("underline_mask.bmp"));
176 strikeoutImage = createBitmapImage (display, import("strikeout.bmp"), import("strikeout_mask.bmp"));
177
178 /* Create controls to modify the StyledText */
179 Label label = new Label (styledTextStyleGroup, DWT.NONE);
180 label.setText (ControlExample.getResourceString ("StyledText_Style_Instructions"));
181 label.setLayoutData(new GridData(DWT.FILL, DWT.CENTER, false, false, 6, 1));
182 label = new Label (styledTextStyleGroup, DWT.NONE);
183 label.setText (ControlExample.getResourceString ("Bold"));
184 label.setLayoutData(new GridData(DWT.END, DWT.CENTER, true, false));
185 boldButton = new Button (styledTextStyleGroup, DWT.PUSH);
186 boldButton.setImage (boldImage);
187 label = new Label (styledTextStyleGroup, DWT.NONE);
188 label.setText (ControlExample.getResourceString ("Underline"));
189 label.setLayoutData(new GridData(DWT.END, DWT.CENTER, true, false));
190 underlineButton = new Button (styledTextStyleGroup, DWT.PUSH);
191 underlineButton.setImage (underlineImage);
192 label = new Label (styledTextStyleGroup, DWT.NONE);
193 label.setText (ControlExample.getResourceString ("Foreground_Style"));
194 label.setLayoutData(new GridData(DWT.END, DWT.CENTER, true, false));
195 redButton = new Button (styledTextStyleGroup, DWT.PUSH);
196 redButton.setImage (redImage);
197 label = new Label (styledTextStyleGroup, DWT.NONE);
198 label.setText (ControlExample.getResourceString ("Italic"));
199 label.setLayoutData(new GridData(DWT.END, DWT.CENTER, true, false));
200 italicButton = new Button (styledTextStyleGroup, DWT.PUSH);
201 italicButton.setImage (italicImage);
202 label = new Label (styledTextStyleGroup, DWT.NONE);
203 label.setText (ControlExample.getResourceString ("Strikeout"));
204 label.setLayoutData(new GridData(DWT.END, DWT.CENTER, true, false));
205 strikeoutButton = new Button (styledTextStyleGroup, DWT.PUSH);
206 strikeoutButton.setImage (strikeoutImage);
207 label = new Label (styledTextStyleGroup, DWT.NONE);
208 label.setText (ControlExample.getResourceString ("Background_Style"));
209 label.setLayoutData(new GridData(DWT.END, DWT.CENTER, true, false));
210 yellowButton = new Button (styledTextStyleGroup, DWT.PUSH);
211 yellowButton.setImage (yellowImage);
212 SelectionListener styleListener = new class() SelectionAdapter {
213 public void widgetSelected (SelectionEvent e) {
214 Point sel = styledText.getSelectionRange();
215 if ((sel is null) || (sel.y is 0)) return;
216 StyleRange style;
217 for (int i = sel.x; i<sel.x+sel.y; i++) {
218 StyleRange range = styledText.getStyleRangeAtOffset(i);
219 if (range !is null) {
220 style = cast(StyleRange)range.clone();
221 style.start = i;
222 style.length = 1;
223 } else {
224 style = new StyleRange(i, 1, null, null, DWT.NORMAL);
225 }
226 if (e.widget is boldButton) {
227 style.fontStyle ^= DWT.BOLD;
228 } else if (e.widget is italicButton) {
229 style.fontStyle ^= DWT.ITALIC;
230 } else if (e.widget is underlineButton) {
231 style.underline = !style.underline;
232 } else if (e.widget is strikeoutButton) {
233 style.strikeout = !style.strikeout;
234 }
235 styledText.setStyleRange(style);
236 }
237 styledText.setSelectionRange(sel.x + sel.y, 0);
238 }
239 };
240 SelectionListener colorListener = new class() SelectionAdapter {
241 public void widgetSelected (SelectionEvent e) {
242 Point sel = styledText.getSelectionRange();
243 if ((sel is null) || (sel.y is 0)) return;
244 Color fg = null, bg = null;
245 if (e.widget is redButton) {
246 fg = display.getSystemColor (DWT.COLOR_RED);
247 } else if (e.widget is yellowButton) {
248 bg = display.getSystemColor (DWT.COLOR_YELLOW);
249 }
250 StyleRange style;
251 for (int i = sel.x; i<sel.x+sel.y; i++) {
252 StyleRange range = styledText.getStyleRangeAtOffset(i);
253 if (range !is null) {
254 style = cast(StyleRange)range.clone();
255 style.start = i;
256 style.length = 1;
257 style.foreground = style.foreground !is null ? null : fg;
258 style.background = style.background !is null ? null : bg;
259 } else {
260 style = new StyleRange (i, 1, fg, bg, DWT.NORMAL);
261 }
262 styledText.setStyleRange(style);
263 }
264 styledText.setSelectionRange(sel.x + sel.y, 0);
265 }
266 };
267 boldButton.addSelectionListener(styleListener);
268 italicButton.addSelectionListener(styleListener);
269 underlineButton.addSelectionListener(styleListener);
270 strikeoutButton.addSelectionListener(styleListener);
271 redButton.addSelectionListener(colorListener);
272 yellowButton.addSelectionListener(colorListener);
273 yellowButton.addDisposeListener(new class() DisposeListener {
274 public void widgetDisposed (DisposeEvent e) {
275 boldImage.dispose();
276 italicImage.dispose();
277 redImage.dispose();
278 yellowImage.dispose();
279 underlineImage.dispose();
280 strikeoutImage.dispose();
281 }
282 });
283 }
284
285 /**
286 * Creates the tab folder page.
287 *
288 * @param tabFolder org.eclipse.swt.widgets.TabFolder
289 * @return the new page for the tab folder
290 */
291 Composite createTabFolderPage (TabFolder tabFolder) {
292 super.createTabFolderPage (tabFolder);
293
294 /*
295 * Add a resize listener to the tabFolderPage so that
296 * if the user types into the example widget to change
297 * its preferred size, and then resizes the shell, we
298 * recalculate the preferred size correctly.
299 */
300 tabFolderPage.addControlListener(new class() ControlAdapter {
301 public void controlResized(ControlEvent e) {
302 setExampleWidgetSize ();
303 }
304 });
305
306 return tabFolderPage;
307 }
308
309 /**
310 * Disposes the "Example" widgets.
311 */
312 void disposeExampleWidgets () {
313 /* store the state of the styledText if applicable */
314 if (styledText !is null) {
315 styleRanges = styledText.getStyleRanges();
316 text = styledText.getText();
317 }
318 super.disposeExampleWidgets();
319 }
320
321 /**
322 * Gets the "Example" widget children.
323 */
324 Widget [] getExampleWidgets () {
325 return [ cast(Widget) styledText];
326 }
327
328 /**
329 * Returns a list of set/get API method names (without the set/get prefix)
330 * that can be used to set/get values in the example control(s).
331 */
332 char[][] getMethodNames() {
333 return ["CaretOffset", "DoubleClickEnabled", "Editable", "HorizontalIndex", "HorizontalPixel", "Orientation", "Selection", "Tabs", "Text", "TextLimit", "ToolTipText", "TopIndex", "TopPixel", "WordWrap"];
334 }
335
336
337 /**
338 * Gets the text for the tab folder item.
339 */
340 char[] getTabText () {
341 return "StyledText";
342 }
343
344 /**
345 * Sets the state of the "Example" widgets.
346 */
347 void setExampleWidgetState () {
348 super.setExampleWidgetState ();
349 wrapButton.setSelection ((styledText.getStyle () & DWT.WRAP) !is 0);
350 readOnlyButton.setSelection ((styledText.getStyle () & DWT.READ_ONLY) !is 0);
351 fullSelectionButton.setSelection ((styledText.getStyle () & DWT.FULL_SELECTION) !is 0);
352 horizontalButton.setEnabled ((styledText.getStyle () & DWT.MULTI) !is 0);
353 verticalButton.setEnabled ((styledText.getStyle () & DWT.MULTI) !is 0);
354 wrapButton.setEnabled ((styledText.getStyle () & DWT.MULTI) !is 0);
355 }
356 }