Mercurial > projects > dwt-samples
annotate examples/controlexample/CanvasTab.d @ 161:eb84f9418bbf
Change module names to this not have examples in the FQN.
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Mon, 01 Sep 2008 22:24:27 +0200 |
| parents | 8a1930f94cbb |
| children |
| rev | line source |
|---|---|
| 78 | 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 *******************************************************************************/ | |
|
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Change module names to this not have examples in the FQN.
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parents:
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diff
changeset
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13 module controlexample.CanvasTab; |
| 78 | 14 |
| 15 | |
| 16 | |
| 17 import dwt.DWT; | |
| 18 import dwt.events.ControlAdapter; | |
| 19 import dwt.events.ControlEvent; | |
| 20 import dwt.events.PaintEvent; | |
| 21 import dwt.events.PaintListener; | |
| 22 import dwt.events.SelectionAdapter; | |
| 23 import dwt.events.SelectionEvent; | |
| 24 import dwt.graphics.Color; | |
| 25 import dwt.graphics.Font; | |
| 26 import dwt.graphics.GC; | |
| 27 import dwt.graphics.Point; | |
| 28 import dwt.graphics.Rectangle; | |
| 29 import dwt.layout.GridData; | |
| 30 import dwt.layout.GridLayout; | |
| 31 import dwt.widgets.Button; | |
| 32 import dwt.widgets.Canvas; | |
| 33 import dwt.widgets.Caret; | |
| 34 import dwt.widgets.Composite; | |
| 35 import dwt.widgets.Group; | |
| 36 import dwt.widgets.ScrollBar; | |
| 37 import dwt.widgets.TabFolder; | |
| 38 import dwt.widgets.Widget; | |
| 39 | |
|
161
eb84f9418bbf
Change module names to this not have examples in the FQN.
Frank Benoit <benoit@tionex.de>
parents:
80
diff
changeset
|
40 import controlexample.Tab; |
|
eb84f9418bbf
Change module names to this not have examples in the FQN.
Frank Benoit <benoit@tionex.de>
parents:
80
diff
changeset
|
41 import controlexample.ControlExample; |
| 78 | 42 |
| 43 class CanvasTab : Tab { | |
| 44 static const int colors [] = [ | |
| 45 DWT.COLOR_RED, | |
| 46 DWT.COLOR_GREEN, | |
| 47 DWT.COLOR_BLUE, | |
| 48 DWT.COLOR_MAGENTA, | |
| 49 DWT.COLOR_YELLOW, | |
| 50 DWT.COLOR_CYAN, | |
| 51 DWT.COLOR_DARK_RED, | |
| 52 DWT.COLOR_DARK_GREEN, | |
| 53 DWT.COLOR_DARK_BLUE, | |
| 54 DWT.COLOR_DARK_MAGENTA, | |
| 55 DWT.COLOR_DARK_YELLOW, | |
| 56 DWT.COLOR_DARK_CYAN | |
| 57 ]; | |
| 58 static final char[] canvasString = "Canvas"; //$NON-NLS-1$ | |
| 59 | |
| 60 /* Example widgets and groups that contain them */ | |
| 61 Canvas canvas; | |
| 62 Group canvasGroup; | |
| 63 | |
| 64 /* Style widgets added to the "Style" group */ | |
| 65 Button horizontalButton, verticalButton, noBackgroundButton, noFocusButton, | |
| 66 noMergePaintsButton, noRedrawResizeButton, doubleBufferedButton; | |
| 67 | |
| 68 /* Other widgets added to the "Other" group */ | |
| 69 Button caretButton, fillDamageButton; | |
| 70 | |
| 71 int paintCount; | |
| 72 int cx, cy; | |
| 73 int maxX, maxY; | |
| 74 | |
| 75 /** | |
| 76 * Creates the Tab within a given instance of ControlExample. | |
| 77 */ | |
| 78 this(ControlExample instance) { | |
| 79 super(instance); | |
| 80 } | |
| 81 | |
| 82 /** | |
| 83 * Creates the "Other" group. | |
| 84 */ | |
| 85 void createOtherGroup () { | |
| 86 super.createOtherGroup (); | |
| 87 | |
| 88 /* Create display controls specific to this example */ | |
| 89 caretButton = new Button (otherGroup, DWT.CHECK); | |
| 90 caretButton.setText (ControlExample.getResourceString("Caret")); | |
| 91 fillDamageButton = new Button (otherGroup, DWT.CHECK); | |
| 92 fillDamageButton.setText (ControlExample.getResourceString("FillDamage")); | |
| 93 | |
| 94 /* Add the listeners */ | |
| 95 caretButton.addSelectionListener (new class() SelectionAdapter { | |
| 96 public void widgetSelected (SelectionEvent event) { | |
| 97 setCaret (); | |
| 98 } | |
| 99 }); | |
| 100 } | |
| 101 | |
| 102 /** | |
| 103 * Creates the "Example" group. | |
| 104 */ | |
| 105 void createExampleGroup () { | |
| 106 super.createExampleGroup (); | |
| 107 | |
| 108 /* Create a group for the canvas widget */ | |
| 109 canvasGroup = new Group (exampleGroup, DWT.NONE); | |
| 110 canvasGroup.setLayout (new GridLayout ()); | |
| 111 canvasGroup.setLayoutData (new GridData (DWT.FILL, DWT.FILL, true, true)); | |
| 112 canvasGroup.setText ("Canvas"); | |
| 113 } | |
| 114 | |
| 115 /** | |
| 116 * Creates the "Example" widgets. | |
| 117 */ | |
| 118 void createExampleWidgets () { | |
| 119 | |
| 120 /* Compute the widget style */ | |
| 121 int style = getDefaultStyle(); | |
| 122 if (horizontalButton.getSelection ()) style |= DWT.H_SCROLL; | |
| 123 if (verticalButton.getSelection ()) style |= DWT.V_SCROLL; | |
| 124 if (borderButton.getSelection ()) style |= DWT.BORDER; | |
| 125 if (noBackgroundButton.getSelection ()) style |= DWT.NO_BACKGROUND; | |
| 126 if (noFocusButton.getSelection ()) style |= DWT.NO_FOCUS; | |
| 127 if (noMergePaintsButton.getSelection ()) style |= DWT.NO_MERGE_PAINTS; | |
| 128 if (noRedrawResizeButton.getSelection ()) style |= DWT.NO_REDRAW_RESIZE; | |
| 129 if (doubleBufferedButton.getSelection ()) style |= DWT.DOUBLE_BUFFERED; | |
| 130 | |
| 131 /* Create the example widgets */ | |
| 132 paintCount = 0; cx = 0; cy = 0; | |
| 133 canvas = new Canvas (canvasGroup, style); | |
| 134 canvas.addPaintListener(new class() PaintListener { | |
| 135 public void paintControl(PaintEvent e) { | |
| 136 paintCount++; | |
| 137 GC gc = e.gc; | |
| 138 if (fillDamageButton.getSelection ()) { | |
| 139 Color color = e.display.getSystemColor (colors [paintCount % colors.length]); | |
| 140 gc.setBackground(color); | |
| 141 gc.fillRectangle(e.x, e.y, e.width, e.height); | |
| 142 } | |
| 143 Point size = canvas.getSize (); | |
| 144 gc.drawArc(cx + 1, cy + 1, size.x - 2, size.y - 2, 0, 360); | |
| 145 gc.drawRectangle(cx + (size.x - 10) / 2, cy + (size.y - 10) / 2, 10, 10); | |
| 146 Point extent = gc.textExtent(canvasString); | |
| 147 gc.drawString(canvasString, cx + (size.x - extent.x) / 2, cy - extent.y + (size.y - 10) / 2, true); | |
| 148 } | |
| 149 }); | |
| 150 canvas.addControlListener(new class() ControlAdapter { | |
| 151 public void controlResized(ControlEvent event) { | |
| 152 Point size = canvas.getSize (); | |
| 153 maxX = size.x * 3 / 2; maxY = size.y * 3 / 2; | |
| 154 resizeScrollBars (); | |
| 155 } | |
| 156 }); | |
| 157 ScrollBar bar = canvas.getHorizontalBar(); | |
| 158 if (bar !is null) { | |
| 159 hookListeners (bar); | |
| 160 bar.addSelectionListener(new class() SelectionAdapter { | |
| 161 public void widgetSelected(SelectionEvent event) { | |
| 162 scrollHorizontal (cast(ScrollBar)event.widget); | |
| 163 } | |
| 164 }); | |
| 165 } | |
| 166 bar = canvas.getVerticalBar(); | |
| 167 if (bar !is null) { | |
| 168 hookListeners (bar); | |
| 169 bar.addSelectionListener(new class() SelectionAdapter { | |
| 170 public void widgetSelected(SelectionEvent event) { | |
| 171 scrollVertical (cast(ScrollBar)event.widget); | |
| 172 } | |
| 173 }); | |
| 174 } | |
| 175 } | |
| 176 | |
| 177 /** | |
| 178 * Creates the "Style" group. | |
| 179 */ | |
| 180 void createStyleGroup() { | |
| 181 super.createStyleGroup(); | |
| 182 | |
| 183 /* Create the extra widgets */ | |
| 184 horizontalButton = new Button (styleGroup, DWT.CHECK); | |
| 185 horizontalButton.setText ("DWT.H_SCROLL"); | |
| 186 horizontalButton.setSelection(true); | |
| 187 verticalButton = new Button (styleGroup, DWT.CHECK); | |
| 188 verticalButton.setText ("DWT.V_SCROLL"); | |
| 189 verticalButton.setSelection(true); | |
| 190 borderButton = new Button (styleGroup, DWT.CHECK); | |
| 191 borderButton.setText ("DWT.BORDER"); | |
| 192 noBackgroundButton = new Button (styleGroup, DWT.CHECK); | |
| 193 noBackgroundButton.setText ("DWT.NO_BACKGROUND"); | |
| 194 noFocusButton = new Button (styleGroup, DWT.CHECK); | |
| 195 noFocusButton.setText ("DWT.NO_FOCUS"); | |
| 196 noMergePaintsButton = new Button (styleGroup, DWT.CHECK); | |
| 197 noMergePaintsButton.setText ("DWT.NO_MERGE_PAINTS"); | |
| 198 noRedrawResizeButton = new Button (styleGroup, DWT.CHECK); | |
| 199 noRedrawResizeButton.setText ("DWT.NO_REDRAW_RESIZE"); | |
| 200 doubleBufferedButton = new Button (styleGroup, DWT.CHECK); | |
| 201 doubleBufferedButton.setText ("DWT.DOUBLE_BUFFERED"); | |
| 202 } | |
| 203 | |
| 204 /** | |
| 205 * Creates the tab folder page. | |
| 206 * | |
| 207 * @param tabFolder org.eclipse.swt.widgets.TabFolder | |
| 208 * @return the new page for the tab folder | |
| 209 */ | |
| 210 Composite createTabFolderPage (TabFolder tabFolder) { | |
| 211 super.createTabFolderPage (tabFolder); | |
| 212 | |
| 213 /* | |
| 214 * Add a resize listener to the tabFolderPage so that | |
| 215 * if the user types into the example widget to change | |
| 216 * its preferred size, and then resizes the shell, we | |
| 217 * recalculate the preferred size correctly. | |
| 218 */ | |
| 219 tabFolderPage.addControlListener(new class() ControlAdapter { | |
| 220 public void controlResized(ControlEvent e) { | |
| 221 setExampleWidgetSize (); | |
| 222 } | |
| 223 }); | |
| 224 | |
| 225 return tabFolderPage; | |
| 226 } | |
| 227 | |
| 228 /** | |
| 229 * Gets the "Example" widget children. | |
| 230 */ | |
| 231 Widget [] getExampleWidgets () { | |
| 232 return [ cast(Widget) canvas ]; | |
| 233 } | |
| 234 | |
| 235 /** | |
| 236 * Returns a list of set/get API method names (without the set/get prefix) | |
| 237 * that can be used to set/get values in the example control(s). | |
| 238 */ | |
| 239 char[][] getMethodNames() { | |
| 240 return ["ToolTipText"]; | |
| 241 } | |
| 242 | |
| 243 /** | |
| 244 * Gets the text for the tab folder item. | |
| 245 */ | |
| 246 char[] getTabText () { | |
| 247 return "Canvas"; | |
| 248 } | |
| 249 | |
| 250 /** | |
| 251 * Resizes the maximum and thumb of both scrollbars. | |
| 252 */ | |
| 253 void resizeScrollBars () { | |
| 254 Rectangle clientArea = canvas.getClientArea(); | |
| 255 ScrollBar bar = canvas.getHorizontalBar(); | |
| 256 if (bar !is null) { | |
| 257 bar.setMaximum(maxX); | |
| 258 bar.setThumb(clientArea.width); | |
| 259 bar.setPageIncrement(clientArea.width); | |
| 260 } | |
| 261 bar = canvas.getVerticalBar(); | |
| 262 if (bar !is null) { | |
| 263 bar.setMaximum(maxY); | |
| 264 bar.setThumb(clientArea.height); | |
| 265 bar.setPageIncrement(clientArea.height); | |
| 266 } | |
| 267 } | |
| 268 | |
| 269 /** | |
| 270 * Scrolls the canvas horizontally. | |
| 271 * | |
| 272 * @param scrollBar | |
| 273 */ | |
| 274 void scrollHorizontal (ScrollBar scrollBar) { | |
| 275 Rectangle bounds = canvas.getClientArea(); | |
| 276 int x = -scrollBar.getSelection(); | |
| 277 if (x + maxX < bounds.width) { | |
| 278 x = bounds.width - maxX; | |
| 279 } | |
| 280 canvas.scroll(x, cy, cx, cy, maxX, maxY, false); | |
| 281 cx = x; | |
| 282 } | |
| 283 | |
| 284 /** | |
| 285 * Scrolls the canvas vertically. | |
| 286 * | |
| 287 * @param scrollBar | |
| 288 */ | |
| 289 void scrollVertical (ScrollBar scrollBar) { | |
| 290 Rectangle bounds = canvas.getClientArea(); | |
| 291 int y = -scrollBar.getSelection(); | |
| 292 if (y + maxY < bounds.height) { | |
| 293 y = bounds.height - maxY; | |
| 294 } | |
| 295 canvas.scroll(cx, y, cx, cy, maxX, maxY, false); | |
| 296 cy = y; | |
| 297 } | |
| 298 | |
| 299 /** | |
| 300 * Sets or clears the caret in the "Example" widget. | |
| 301 */ | |
| 302 void setCaret () { | |
| 303 Caret oldCaret = canvas.getCaret (); | |
| 304 if (caretButton.getSelection ()) { | |
| 305 Caret newCaret = new Caret(canvas, DWT.NONE); | |
| 306 Font font = canvas.getFont(); | |
| 307 newCaret.setFont(font); | |
| 308 GC gc = new GC(canvas); | |
| 309 gc.setFont(font); | |
| 310 newCaret.setBounds(1, 1, 1, gc.getFontMetrics().getHeight()); | |
| 311 gc.dispose(); | |
| 312 canvas.setCaret (newCaret); | |
| 313 canvas.setFocus(); | |
| 314 } else { | |
| 315 canvas.setCaret (null); | |
| 316 } | |
| 317 if (oldCaret !is null) oldCaret.dispose (); | |
| 318 } | |
| 319 | |
| 320 /** | |
| 321 * Sets the state of the "Example" widgets. | |
| 322 */ | |
| 323 void setExampleWidgetState () { | |
| 324 super.setExampleWidgetState (); | |
| 325 horizontalButton.setSelection ((canvas.getStyle () & DWT.H_SCROLL) !is 0); | |
| 326 verticalButton.setSelection ((canvas.getStyle () & DWT.V_SCROLL) !is 0); | |
| 327 borderButton.setSelection ((canvas.getStyle () & DWT.BORDER) !is 0); | |
| 328 noBackgroundButton.setSelection ((canvas.getStyle () & DWT.NO_BACKGROUND) !is 0); | |
| 329 noFocusButton.setSelection ((canvas.getStyle () & DWT.NO_FOCUS) !is 0); | |
| 330 noMergePaintsButton.setSelection ((canvas.getStyle () & DWT.NO_MERGE_PAINTS) !is 0); | |
| 331 noRedrawResizeButton.setSelection ((canvas.getStyle () & DWT.NO_REDRAW_RESIZE) !is 0); | |
| 332 doubleBufferedButton.setSelection ((canvas.getStyle () & DWT.DOUBLE_BUFFERED) !is 0); | |
| 333 if (!instance.startup) setCaret (); | |
| 334 } | |
| 335 } |