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comparison dwt/widgets/ScrollBar.d @ 26:74a3be48bba8

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Ported dwt.widgets.ScrollBar
author Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
date Mon, 08 Sep 2008 17:55:37 +0200
parents e831403a80a9
children 642f460a0908
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25:060cdd4457aa 26:74a3be48bba8
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 *
11 * Port to the D programming language:
12 * Jacob Carlborg <jacob.carlborg@gmail.com>
10 *******************************************************************************/ 13 *******************************************************************************/
11 module dwt.widgets.ScrollBar; 14 module dwt.widgets.ScrollBar;
12
13 import dwt.dwthelper.utils;
14 15
15 16
16 import dwt.DWT; 17 import dwt.DWT;
17 import dwt.DWTException; 18 import dwt.DWTException;
18 import dwt.events.SelectionEvent; 19 import dwt.events.SelectionEvent;
19 import dwt.events.SelectionListener; 20 import dwt.events.SelectionListener;
20 import dwt.graphics.Point; 21 import dwt.graphics.Point;
21 import dwt.internal.cocoa.NSScroller; 22 import dwt.internal.cocoa.NSScroller;
22 import dwt.internal.cocoa.OS; 23 import dwt.internal.cocoa.OS;
23 import dwt.internal.cocoa.id; 24 import dwt.internal.cocoa.id;
25
26 import dwt.dwthelper.utils;
27 import dwt.internal.cocoa.CGFloat;
28 import dwt.widgets.Event;
29 import dwt.widgets.Scrollable;
30 import dwt.widgets.TypedListener;
31 import dwt.widgets.Widget;
24 32
25 /** 33 /**
26 * Instances of this class are selectable user interface 34 * Instances of this class are selectable user interface
27 * objects that represent a range of positive, numeric values. 35 * objects that represent a range of positive, numeric values.
28 * <p> 36 * <p>
410 view.sendAction(actionSelector, target); 418 view.sendAction(actionSelector, target);
411 } else { 419 } else {
412 value = getSelection (); 420 value = getSelection ();
413 } 421 }
414 Event event = new Event(); 422 Event event = new Event();
415 int hitPart = (cast(NSScroller)view).hitPart(); 423 NSScrollerPart hitPart = (cast(NSScroller)view).hitPart();
416 switch (hitPart) { 424 switch (hitPart) {
417 case OS.NSScrollerDecrementLine: 425 case OS.NSScrollerDecrementLine:
418 value -= increment; 426 value -= increment;
419 event.detail = DWT.ARROW_UP; 427 event.detail = DWT.ARROW_UP;
420 break; 428 break;
654 void updateBar(int selection, int minimum, int maximum, int thumb) { 662 void updateBar(int selection, int minimum, int maximum, int thumb) {
655 NSScroller widget = cast(NSScroller)view; 663 NSScroller widget = cast(NSScroller)view;
656 selection = Math.max(minimum, Math.min(maximum - thumb, selection)); 664 selection = Math.max(minimum, Math.min(maximum - thumb, selection));
657 int range = maximum - thumb - minimum; 665 int range = maximum - thumb - minimum;
658 float fraction = range < 0 ? 1 : cast(float)(selection - minimum) / range; 666 float fraction = range < 0 ? 1 : cast(float)(selection - minimum) / range;
659 float knob = minimum is maximum ? 1 : cast(float)(thumb - minimum) / maximum - minimum; 667 CGFloat knob = minimum is maximum ? 1 : cast(CGFloat)(thumb - minimum) / maximum - minimum;
660 widget.setFloatValue(fraction, knob); 668 widget.setFloatValue(fraction, knob);
661 widget.setEnabled(range > 0); 669 widget.setEnabled(range > 0);
662 } 670 }
663 671
664 } 672 }