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comparison dwt/widgets/ScrollBar.d @ 45:d8635bb48c7c

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Merge with SWT 3.5
author Jacob Carlborg <doob@me.com>
date Mon, 01 Dec 2008 17:07:00 +0100
parents 642f460a0908
children 34237ae5156a
comparison
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44:ca5e494f2bbf 45:d8635bb48c7c
1 /******************************************************************************* 1 /*******************************************************************************
2 * Copyright (c) 2000, 2007 IBM Corporation and others. 2 * Copyright (c) 2000, 2008 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials 3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0 4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at 5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html 6 * http://www.eclipse.org/legal/epl-v10.html
7 * 7 *
8 * Contributors: 8 * Contributors:
9 * IBM Corporation - initial API and implementation 9 * IBM Corporation - initial API and implementation
10 * 10 *
11 * Port to the D programming language: 11 * Port to the D programming language:
12 * Jacob Carlborg <jacob.carlborg@gmail.com> 12 * Jacob Carlborg <doob@me.com>
13 *******************************************************************************/ 13 *******************************************************************************/
14 module dwt.widgets.ScrollBar; 14 module dwt.widgets.ScrollBar;
15 15
16 16
17 import dwt.DWT; 17 import dwt.DWT;
18 import dwt.DWTException; 18 import dwt.DWTException;
19 import dwt.events.SelectionEvent; 19 import dwt.events.SelectionEvent;
20 import dwt.events.SelectionListener; 20 import dwt.events.SelectionListener;
21 import dwt.graphics.Point; 21 import dwt.graphics.Point;
22 import dwt.internal.cocoa.NSRect;
22 import dwt.internal.cocoa.NSScroller; 23 import dwt.internal.cocoa.NSScroller;
23 import dwt.internal.cocoa.OS; 24 import dwt.internal.cocoa.OS;
24 import dwt.internal.cocoa.id; 25 import dwt.internal.cocoa.id;
25 26
26 import dwt.dwthelper.utils; 27 import dwt.dwthelper.utils;
90 * 91 *
91 * @see Slider 92 * @see Slider
92 * @see Scrollable 93 * @see Scrollable
93 * @see Scrollable#getHorizontalBar 94 * @see Scrollable#getHorizontalBar
94 * @see Scrollable#getVerticalBar 95 * @see Scrollable#getVerticalBar
96 * @see <a href="http://www.eclipse.org/swt/examples.php">DWT Example: ControlExample</a>
97 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
95 */ 98 */
96 public class ScrollBar : Widget { 99 public class ScrollBar : Widget {
97 NSScroller view; 100 NSScroller view;
98 Scrollable parent; 101 Scrollable parent;
99 int minimum, maximum, thumb; 102 int minimum, maximum = 100, thumb = 10;
100 int increment = 1; 103 int increment = 1;
101 int pageIncrement = 10; 104 int pageIncrement = 10;
102 id target; 105 id target;
103 String actionSelector;; 106 String actionSelector;;
104 107
148 151
149 static int checkStyle (int style) { 152 static int checkStyle (int style) {
150 return checkBits (style, DWT.HORIZONTAL, DWT.VERTICAL, 0, 0, 0, 0); 153 return checkBits (style, DWT.HORIZONTAL, DWT.VERTICAL, 0, 0, 0, 0);
151 } 154 }
152 155
153 void createWidget () { 156 void deregister () {
154 maximum = 100; 157 super.deregister ();
155 thumb = 10; 158 display.removeWidget (view);
156 super.createWidget();
157 } 159 }
158 160
159 /** 161 /**
160 * Returns <code>true</code> if the receiver is enabled, and 162 * Returns <code>true</code> if the receiver is enabled, and
161 * <code>false</code> otherwise. A disabled control is typically 163 * <code>false</code> otherwise. A disabled control is typically
266 * </ul> 268 * </ul>
267 */ 269 */
268 public int getSelection () { 270 public int getSelection () {
269 checkWidget(); 271 checkWidget();
270 NSScroller widget = cast(NSScroller)view; 272 NSScroller widget = cast(NSScroller)view;
271 float value = widget.floatValue(); 273 double value = widget.doubleValue();
272 return cast(int)((maximum - thumb - minimum) * value + minimum); 274 return cast(int)((maximum - thumb - minimum) * value + minimum);
273 } 275 }
274 276
275 /** 277 /**
276 * Returns a point describing the receiver's size. The 278 * Returns a point describing the receiver's size. The
285 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> 287 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
286 * </ul> 288 * </ul>
287 */ 289 */
288 public Point getSize () { 290 public Point getSize () {
289 checkWidget(); 291 checkWidget();
290 // return getControlSize (handle); 292 NSRect rect = ((NSScroller)view).frame();
291 return new Point(0, 0); 293 return new Point((int)rect.width, (int)rect.height);
292 } 294 }
293 295
294 /** 296 /**
295 * Returns the size of the receiver's thumb relative to the 297 * Returns the size of the receiver's thumb relative to the
296 * difference between its maximum and minimum values. 298 * difference between its maximum and minimum values.
393 if (eventTable is null) return; 395 if (eventTable is null) return;
394 eventTable.unhook(DWT.Selection, listener); 396 eventTable.unhook(DWT.Selection, listener);
395 eventTable.unhook(DWT.DefaultSelection,listener); 397 eventTable.unhook(DWT.DefaultSelection,listener);
396 } 398 }
397 399
400 void register () {
401 super.register ();
402 display.addWidget (view, this);
403 }
404
398 void releaseHandle () { 405 void releaseHandle () {
399 super.releaseHandle (); 406 super.releaseHandle ();
407 if (view !is null) view.release();
400 view = null; 408 view = null;
401 } 409 }
402 410
403 void releaseParent () { 411 void releaseParent () {
404 super.releaseParent (); 412 super.releaseParent ();
405 if (parent.horizontalBar is this) parent.horizontalBar = null; 413 if (parent.horizontalBar is this) parent.horizontalBar = null;
406 if (parent.verticalBar is this) parent.verticalBar = null; 414 if (parent.verticalBar is this) parent.verticalBar = null;
407 parent.resizeClientArea ();
408 } 415 }
409 416
410 void releaseWidget () { 417 void releaseWidget () {
411 super.releaseWidget (); 418 super.releaseWidget ();
412 parent = null; 419 parent = null;
482 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> 489 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
483 * </ul> 490 * </ul>
484 */ 491 */
485 public void setEnabled (bool enabled) { 492 public void setEnabled (bool enabled) {
486 checkWidget(); 493 checkWidget();
487 // if (enabled) { 494 if (enabled) {
488 // if ((state & DISABLED) is 0) return; 495 if ((state & DISABLED) is 0) return;
489 // state &= ~DISABLED; 496 state &= ~DISABLED;
490 // OS.EnableControl (handle); 497 } else {
491 // } else { 498 if ((state & DISABLED) !is 0) return;
492 // if ((state & DISABLED) !is 0) return; 499 state |= DISABLED;
493 // state |= DISABLED; 500 }
494 // OS.DisableControl (handle); 501 view.setEnabled(enabled);
495 // }
496 } 502 }
497 503
498 /** 504 /**
499 * Sets the maximum. If this value is negative or less than or 505 * Sets the maximum. If this value is negative or less than or
500 * equal to the minimum, the value is ignored. If necessary, first 506 * equal to the minimum, the value is ignored. If necessary, first
629 if (minimum < 0) return; 635 if (minimum < 0) return;
630 if (maximum < 0) return; 636 if (maximum < 0) return;
631 if (thumb < 1) return; 637 if (thumb < 1) return;
632 if (increment < 1) return; 638 if (increment < 1) return;
633 if (pageIncrement < 1) return; 639 if (pageIncrement < 1) return;
634 thumb = Math.min (thumb, maximum - minimum); 640 this.thumb = thumb = Math.min (thumb, maximum - minimum);
641 this.maximum = maximum;
642 this.minimum = minimum;
635 this.increment = increment; 643 this.increment = increment;
636 this.pageIncrement = pageIncrement; 644 this.pageIncrement = pageIncrement;
637 updateBar(selection, minimum, maximum, thumb); 645 updateBar (selection, minimum, maximum, thumb);
638 } 646 }
639 647
640 /** 648 /**
641 * Marks the receiver as visible if the argument is <code>true</code>, 649 * Marks the receiver as visible if the argument is <code>true</code>,
642 * and marks it invisible otherwise. 650 * and marks it invisible otherwise.
653 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> 661 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
654 * </ul> 662 * </ul>
655 */ 663 */
656 public void setVisible (bool visible) { 664 public void setVisible (bool visible) {
657 checkWidget(); 665 checkWidget();
658 //TODO visibility
659 parent.setScrollBarVisible (this, visible); 666 parent.setScrollBarVisible (this, visible);
660 } 667 }
661 668
662 void updateBar(int selection, int minimum, int maximum, int thumb) { 669 void updateBar (int selection, int minimum, int maximum, int thumb) {
663 NSScroller widget = cast(NSScroller)view; 670 NSScroller widget = cast(NSScroller) view;
664 selection = Math.max(minimum, Math.min(maximum - thumb, selection)); 671 selection = Math.max (minimum, Math.min (maximum - thumb, selection));
665 int range = maximum - thumb - minimum; 672 int range = maximum - thumb - minimum;
666 float fraction = range < 0 ? 1 : cast(float)(selection - minimum) / range; 673 float fraction = range <= 0 ? 1 : cast(float) (selection - minimum) / range;
667 CGFloat knob = minimum is maximum ? 1 : cast(CGFloat)(thumb - minimum) / maximum - minimum; 674 CGFloat knob = range <= 0 ? 1 : cast(CGFloat) thumb / (maximum - minimum);
668 widget.setFloatValue(fraction, knob); 675 widget.setFloatValue (fraction, knob);
669 widget.setEnabled(range > 0); 676 widget.setEnabled (range > 0);
670 } 677 }
671 678
672 } 679 }