forked from cellularmitosis/ADC-reference-library-2009-july
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathlisting1.html
More file actions
executable file
·1045 lines (865 loc) · 31.1 KB
/
Copy pathlisting1.html
File metadata and controls
executable file
·1045 lines (865 loc) · 31.1 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
<html>
<head>
<!-- BEGIN META TAG INFO -->
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<link rel="home" href="http://developer.apple.com/">
<link rel="find" href="http://developer.apple.com/search/">
<link rel="stylesheet" type="text/css" href="../../documentation/css/adcstyle.css" title="fonts">
<script language="JavaScript" src="../../documentation/js/adc.js" type="text/javascript"></script>
<!-- END META TAG INFO -->
<!-- BEGIN TITLE -->
<title>ColorSwatchView - /ColorSwatch.cp</title>
<!-- END TITLE -->
<script language="JavaScript">
function JumpToNewPage() {
window.location=document.scpopupmenu.gotop.value;
return true;
}
</script>
</head>
<!-- BEGIN BODY OPEN -->
<body>
<!--END BODY OPEN -->
<!-- START CENTER OPEN -->
<center>
<!-- END CENTER OPEN -->
<!-- BEGIN LOGO AND SEARCH -->
<!--#include virtual="/includes/adcnavbar"-->
<!-- END LOGO AND SEARCH -->
<!-- START BREADCRUMB -->
<div id="breadcrumb">
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr>
<td scope="row"><img width="340" height="10" src="images/1dot.gif" alt=""></td>
<td><img width="340" height="10" src="images/1dot.gif" alt=""></td>
</tr>
<tr valign="middle">
<td align="left" colspan="2">
<a href="http://developer.apple.com/">ADC Home</a> > <a href="../../referencelibrary/index.html">Reference Library</a> > <a href="../../samplecode/index.html">Sample Code</a> > <a href="../../samplecode/Carbon/index.html">Carbon</a> > <a href="../../samplecode/Carbon/idxHumanInterfaceToolbox-date.html">Human Interface Toolbox</a> > <A HREF="javascript:location.replace('index.html');">ColorSwatchView</A> >
</td>
</tr>
<tr>
<td colspan="2" scope="row"><img width="680" height="35" src="images/1dot.gif" alt=""></td>
</tr>
</table>
</div>
<!-- END BREADCRUMB -->
<!-- START MAIN CONTENT -->
<!-- START TITLE GRAPHIC AND INTRO-->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr align="left" valign="top">
<td><h1><div id="pagehead">ColorSwatchView</div></h1></td>
</tr>
</table>
<!-- END TITLE GRAPHIC AND INTRO -->
<!-- START WIDE COLUMN -->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr align="left" valign="top">
<td id="scdetails">
<h2>/ColorSwatch.cp</h2>
<form name="scpopupmenu" onSubmit="return false;" method=post>
<p><strong>View Source Code:</strong>
<select name="gotop" onChange="JumpToNewPage();" style="width:340px"><option selected value="ingnore">Select File</option>
<option value="listing1.html">/ColorSwatch.cp</option>
<option value="listing2.html">/ColorSwatch.h</option>
<option value="listing3.html">/main.cp</option></select>
</p>
</form>
<p><strong><a href="ColorSwatchView.zip">Download Sample</a></strong> (“ColorSwatchView.zip”, 18.0K)<BR>
<strong><a href="ColorSwatchView.dmg">Download Sample</a></strong> (“ColorSwatchView.dmg”, 76.9K)</p>
<!--
<p><strong><a href="#">Download Sample</a></strong> (“filename.sit”, 500K)</p>
-->
</td>
</tr>
<tr>
<td scope="row"><img width="680" height="10" src="images/1dot.gif" alt=""><br>
<img height="1" width="680" src="images/1dot_919699.gif" alt=""><br>
<img width="680" height="20" src="images/1dot.gif" alt=""></td>
</tr>
<tr>
<td scope="row">
<!--googleon: index -->
<pre class="sourcecodebox">/*
File: ColorSwatch.cp
Version: Mac OS X
Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc.
("Apple") in consideration of your agreement to the following terms, and your
use, installation, modification or redistribution of this Apple software
constitutes acceptance of these terms. If you do not agree with these terms,
please do not use, install, modify or redistribute this Apple software.
In consideration of your agreement to abide by the following terms, and subject
to these terms, Apple grants you a personal, non-exclusive license, under Apple's
copyrights in this original Apple software (the "Apple Software"), to use,
reproduce, modify and redistribute the Apple Software, with or without
modifications, in source and/or binary forms; provided that if you redistribute
the Apple Software in its entirety and without modifications, you must retain
this notice and the following text and disclaimers in all such redistributions of
the Apple Software. Neither the name, trademarks, service marks or logos of
Apple Computer, Inc. may be used to endorse or promote products derived from the
Apple Software without specific prior written permission from Apple. Except as
expressly stated in this notice, no other rights or licenses, express or implied,
are granted by Apple herein, including but not limited to any patent rights that
may be infringed by your derivative works or by other works in which the Apple
Software may be incorporated.
The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED
WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN
COMBINATION WITH YOUR PRODUCTS.
IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION
OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT
(INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Copyright © 2002 Apple Computer, Inc., All Rights Reserved
*/
#include "ColorSwatch.h"
// -----------------------------------------------------------------------------
// constants
// -----------------------------------------------------------------------------
//
#define kTViewColorSwatchClassID CFSTR( "com.apple.colorswatch" )
#define kEventParamSwatchColor 'sClr'
// This constant was accidentally left private for Jaguar.
// It is to be used with the drag tracking events to indicate that a control
// can accept the incoming drag.
//
// Use it with a typeBoolean
const UInt32 kEventParamControlLikesDrag = 'cldg';
// -----------------------------------------------------------------------------
// HIColorSwatchCreate
// -----------------------------------------------------------------------------
// High-level API for creating a color swatch control.
//
OSStatus HIColorSwatchCreate(
WindowRef inWindow,
const HIRect* inBounds,
RGBColor inSwatchColor,
ControlRef* outControl )
{
return ColorSwatch::Create( inWindow, inBounds, inSwatchColor, outControl );
}
// -----------------------------------------------------------------------------
// HIColorSwatchGetColor
// -----------------------------------------------------------------------------
// High-level APIs for getting and setting the swatch color.
//
OSStatus HIColorSwatchGetColor(
ControlRef inControl,
RGBColor* inColor )
{
return GetControlData( inControl, kControlEntireControl,
kControlSwatchColorTag, sizeof( RGBColor ), inColor, NULL );
}
// -----------------------------------------------------------------------------
// HIColorSwatchSetColor
// -----------------------------------------------------------------------------
//
OSStatus HIColorSwatchSetColor(
ControlRef inControl,
RGBColor inColor )
{
return SetControlData( inControl, kControlEntireControl,
kControlSwatchColorTag, sizeof( RGBColor ), &inColor );
}
// -----------------------------------------------------------------------------
// ColorSwatch constructor
// -----------------------------------------------------------------------------
//
ColorSwatch::ColorSwatch(
HIViewRef inControl )
: TView( inControl ),
fCanAcceptDrag( false ),
fCurrentFocusPart( kControlNoPart )
{
// turn on drag tracking for this view
SetControlDragTrackingEnabled( GetViewRef(), true );
// add autoinvalidation
ChangeAutoInvalidateFlags( kAutoInvalidateOnHilite |
kAutoInvalidateOnActivate |
kAutoInvalidateOnEnable,
NULL );
}
// -----------------------------------------------------------------------------
// ColorSwatch destructor
// -----------------------------------------------------------------------------
//
ColorSwatch::~ColorSwatch()
{
}
// -----------------------------------------------------------------------------
// Create
// -----------------------------------------------------------------------------
// Public class method for creating a ColorSwatch
//
OSStatus ColorSwatch::Create(
WindowRef inWindow,
const HIRect* inBounds,
RGBColor inSwatchColor,
ControlRef* outControl )
{
OSStatus err = noErr;
ControlRef root;
EventRef event = TView::CreateInitializationEvent(); // create initialization event
require_action( event != NULL, CantCreateEvent, err = eventInternalErr );
// register the subclass
static bool sRegistered = false;
if( !sRegistered )
{
TView::RegisterSubclass( kTViewColorSwatchClassID, ColorSwatch::Construct );
sRegistered = true;
}
// add swatch color parameter
err = SetEventParameter( event, kEventParamSwatchColor, typeRGBColor,
sizeof( inSwatchColor ), &inSwatchColor );
require_noerr( err, CantAddParameter );
// instantiate the object
err = HIObjectCreate( kTViewColorSwatchClassID, event, (HIObjectRef*) outControl );
// add to color swatch view to parent view
if( err == noErr )
{
if( inWindow != NULL )
{
GetRootControl( inWindow, &root );
HIViewAddSubview( root, *outControl );
}
HIViewSetFrame( *outControl, inBounds );
}
CantAddParameter:
ReleaseEvent( event );
CantCreateEvent:
return err;
}
// -----------------------------------------------------------------------------
// GetKind
// -----------------------------------------------------------------------------
//
ControlKind ColorSwatch::GetKind()
{
const ControlKind kColorSwatchKind = { 'cSwh', 'cSwh' };
return kColorSwatchKind;
}
// -----------------------------------------------------------------------------
// Construct
// -----------------------------------------------------------------------------
//
OSStatus ColorSwatch::Construct(
ControlRef inControl,
TView** outView )
{
*outView = new ColorSwatch( inControl );
return noErr;
}
// -----------------------------------------------------------------------------
// Initialize
// -----------------------------------------------------------------------------
// Called during HIObject construction, this is your subclasses' chance to
// extract any parameters it might have added to the initialization event
// passed into the HIObjectCreate call.
//
OSStatus ColorSwatch::Initialize(
TCarbonEvent& inEvent )
{
OSStatus err = noErr;
err = TView::Initialize( inEvent );
require_noerr( err, CantInitBaseClass );
// look for the color
err = GetEventParameter( inEvent, kEventParamSwatchColor, typeRGBColor,
NULL, sizeof( fSwatchColor ), NULL, &fSwatchColor );
// add drag & drop and focusing behaviors
ActivateInterface( kDragAndDrop );
ActivateInterface( kKeyboardFocus );
CantInitBaseClass:
return err;
}
// -----------------------------------------------------------------------------
// GetBehaviors
// -----------------------------------------------------------------------------
// Returns our behaviors.
//
UInt32 ColorSwatch::GetBehaviors()
{
return TView::GetBehaviors() | kControlSupportsDragAndDrop |
kControlSupportsFocus;
}
// -----------------------------------------------------------------------------
// Draw
// -----------------------------------------------------------------------------
// Draw your view. You should draw based on VIEW coordinates, not frame
// coordinates.
//
void ColorSwatch::Draw(
RgnHandle inLimitRgn,
CGContextRef inContext )
{
#pragma unused( inLimitRgn, inContext )
ThemeDrawState state = kThemeStateDisabled;
ThemeButtonAdornment adornment = ( fCurrentFocusPart == kControlButtonPart ) ?
(ThemeButtonAdornment)kThemeFocusAdornment :
(ThemeButtonAdornment)kThemeAdornmentNone;
// set up button draw info
if( IsActive() )
state |= kThemeStateActive;
if( GetControlHilite( GetViewRef() ) == kControlButtonPart )
state |= kThemeStatePressed;
ThemeButtonDrawInfo info = { state, 0, adornment };
RgnHandle drawRgn = NewRgn();
Rect qdBounds;
GetRegion( kControlButtonPart, drawRgn );
GetRegionBounds( drawRgn, &qdBounds );
// draw the bevel button background
DrawThemeButton( &qdBounds, kThemeSmallBevelButton, &info, NULL, NULL, NULL, NULL );
GetRegion( kControlImageWellPart, drawRgn );
// draw the swatch color
RGBForeColor( &fSwatchColor );
PaintRgn( drawRgn );
// draw the drag highlight if the view is capable of accepting it
if( fCanAcceptDrag )
{
InsetRect( &qdBounds, 2, 2 );
DrawThemeFocusRect( &qdBounds, true );
}
DisposeRgn( drawRgn );
}
// -----------------------------------------------------------------------------
// HitTest
// -----------------------------------------------------------------------------
// Asks your view to return what part of itself (if any) is hit by the point
// given to it. The point is in VIEW coordinates, so you should get the view
// rect to do bounds checking.
//
ControlPartCode ColorSwatch::HitTest(
const HIPoint& inWhere )
{
ControlPartCode part;
// is the mouse on the button?
if( CGRectContainsPoint( Bounds(), inWhere ) )
part = kControlButtonPart;
else
part = kControlNoPart;
return part;
}
// -----------------------------------------------------------------------------
// GetRegion
// -----------------------------------------------------------------------------
// This is called when someone wants to know certain metrics regarding this
// view. The base class does nothing. Subclasses should handle their own parts,
// such as the content region by overriding this method. The structure region
// is, by default, the view's bounds. If a subclass does not have a region for
// a given part, it should always call the inherited method.
//
OSStatus ColorSwatch::GetRegion(
ControlPartCode inPart,
RgnHandle outRgn )
{
OSStatus err = noErr;
HIRect bounds = Bounds();
Rect qdBounds;
qdBounds.top = (short)CGRectGetMinY( bounds );
qdBounds.left = (short)CGRectGetMinX( bounds );
qdBounds.bottom = (short)CGRectGetMaxY( bounds );
qdBounds.right = (short)CGRectGetMaxX( bounds );
// handle regions for these parts
if( inPart == kControlContentMetaPart || inPart == kControlStructureMetaPart ||
inPart == kControlButtonPart || inPart == kControlImageWellPart )
{
if( inPart == kControlImageWellPart ) // inset for the swatch
InsetRect( &qdBounds, 5, 5 );
RectRgn( outRgn, &qdBounds );
}
else
err = errInvalidPartCode;
return err;
}
// -----------------------------------------------------------------------------
// GetData
// -----------------------------------------------------------------------------
// Gets some data from our view.
//
OSStatus ColorSwatch::GetData(
OSType inTag,
ControlPartCode inPart,
Size inSize,
Size* outSize,
void* inPtr )
{
#pragma unused( inPart )
OSStatus err = noErr;
switch( inTag )
{
case kControlKindTag:
if ( inPtr )
{
if ( inSize != sizeof( ControlKind ) )
err = errDataSizeMismatch;
else
(*(ControlKind*) inPtr) = GetKind();
}
*outSize = sizeof( ControlKind );
break;
case kControlSwatchColorTag:
if ( inPtr )
{
if ( inSize != sizeof( RGBColor ) )
err = errDataSizeMismatch;
else
{
(*(RGBColor*) inPtr).red = fSwatchColor.red;
(*(RGBColor*) inPtr).green = fSwatchColor.green;
(*(RGBColor*) inPtr).blue = fSwatchColor.blue;
}
}
*outSize = sizeof( RGBColor );
break;
default:
err = eventNotHandledErr;
break;
}
return err;
}
// -----------------------------------------------------------------------------
// SetData
// -----------------------------------------------------------------------------
// Sets some data on our control.
//
OSStatus ColorSwatch::SetData(
OSType inTag,
ControlPartCode inPart,
Size inSize,
const void* inPtr )
{
#pragma unused( inPart )
OSStatus err = noErr;
switch( inTag )
{
case kControlSwatchColorTag:
if ( inPtr )
{
if ( inSize != sizeof( RGBColor ) )
err = errDataSizeMismatch;
else
{
fSwatchColor.red = (*(RGBColor*) inPtr).red;
fSwatchColor.green = (*(RGBColor*) inPtr).green;
fSwatchColor.blue = (*(RGBColor*) inPtr).blue;
err = Invalidate();
}
}
break;
default:
err = eventNotHandledErr;
break;
}
return err;
}
// -----------------------------------------------------------------------------
// GetOptimalSize
// -----------------------------------------------------------------------------
// Someone wants to know this view's optimal size and text baseline, probably
// to help do some type of layout.
//
OSStatus ColorSwatch::GetOptimalSize(
HISize* outSize,
float* outBaseLine )
{
#pragma unused( outBaseLine )
if( outSize )
{
outSize->width = 30;
outSize->height = 20;
}
return noErr;
}
// -----------------------------------------------------------------------------
// GetSizeConstraints
// -----------------------------------------------------------------------------
// Someone wants to know this view's minimum and maximum sizes, probably to
// help do some type of layout.
//
OSStatus ColorSwatch::GetSizeConstraints(
HISize* outMin,
HISize* outMax )
{
#pragma unused( outMax )
if( outMin )
{
outMin->width = 20;
outMin->height = 20;
}
return noErr;
}
// -----------------------------------------------------------------------------
// BoundsChanged
// -----------------------------------------------------------------------------
// The bounds of our view have changed.
//
OSStatus ColorSwatch::BoundsChanged(
UInt32 inOptions,
const HIRect& inOriginalBounds,
const HIRect& inCurrentBounds,
RgnHandle inInvalRgn )
{
#pragma unused( inOptions, inOriginalBounds, inCurrentBounds, inInvalRgn )
// force redraw with new bounds
return Invalidate();
}
// -----------------------------------------------------------------------------
// DragEnter
// -----------------------------------------------------------------------------
// A drag has entered our bounds.
//
bool ColorSwatch::DragEnter(
DragRef inDrag )
{
RGBColor tempColor;
fCanAcceptDrag = GetColorFromDrag( inDrag, &tempColor );
// allow the view to redraw with the drag highlight
if( fCanAcceptDrag )
{
// add event parameter to make HIView dragging work
SetEventParameter( GetCurrentEvent(), kEventParamControlLikesDrag,
typeBoolean, sizeof( fCanAcceptDrag ), &fCanAcceptDrag );
Invalidate();
}
return fCanAcceptDrag;
}
// -----------------------------------------------------------------------------
// DragLeave
// -----------------------------------------------------------------------------
// A drag has left. Deal with it.
//
bool ColorSwatch::DragLeave(
DragRef inDrag )
{
RGBColor tempColor;
// if the drag was acceptable, redraw without the drag highlight
if( fCanAcceptDrag )
{
Invalidate();
fCanAcceptDrag = false;
}
return GetColorFromDrag( inDrag, &tempColor );
}
// -----------------------------------------------------------------------------
// DragReceive
// -----------------------------------------------------------------------------
// Deal with receiving a drag.
//
OSStatus ColorSwatch::DragReceive(
DragRef inDrag )
{
// grab the color from the drag and if it exists, cause the view to redraw
if( GetColorFromDrag( inDrag, &fSwatchColor ) )
{
Invalidate();
SendColorChangedCommandEvent(); // messge that the color changed
return noErr;
}
return dragNotAcceptedErr;
}
// -----------------------------------------------------------------------------
// Hit
// -----------------------------------------------------------------------------
// Default hit method.
//
OSStatus ColorSwatch::ControlHit(
ControlPartCode inPart,
UInt32 inModifiers )
{
#pragma unused( inPart, inModifiers )
OSStatus err = noErr;
Point p = { -1, -1 };
Str255 prompt = "\pChoose a color.";
// choose a new color when the button is hit
if( GetColor( p, prompt, &fSwatchColor, &fSwatchColor ) )
{
err = Invalidate();
SendColorChangedCommandEvent(); // messge that the color changed
}
return err;
}
// -----------------------------------------------------------------------------
// Track
// -----------------------------------------------------------------------------
// Default tracking method.
//
OSStatus ColorSwatch::Track(
TCarbonEvent& inEvent,
ControlPartCode* outPart )
{
OSStatus err = noErr;
RgnHandle tempRgn = NewRgn();
Point qdPoint;
err = GetRegion( kControlImageWellPart, tempRgn );
require_noerr( err, CantGetRegion );
// grab the point from the carbon event
err = inEvent.GetParameter( kEventParamMouseLocation, &qdPoint );
require_noerr( err, CantGetParameter );
// test if the point was in the swatch region
if( PtInRgn( qdPoint, tempRgn ) && err == noErr )
{
Hilite( kControlButtonPart );
// if it was, see if a drag should be initiated
if( WaitMouseMoved( qdPoint ) )
{
Hilite( kControlNoPart );
PerformColorDrag( inEvent );
*outPart = kControlNoPart;
return noErr;
}
}
*outPart = kControlButtonPart;
CantGetParameter:
CantGetRegion:
DisposeRgn( tempRgn );
return eventNotHandledErr;
}
// -----------------------------------------------------------------------------
// SetFocusPart
// -----------------------------------------------------------------------------
// Handle focusing.
//
OSStatus ColorSwatch::SetFocusPart(
ControlPartCode inDesiredFocus,
RgnHandle inInvalidRgn,
Boolean inFocusEverything,
ControlPartCode* outActualFocus )
{
#pragma unused( inInvalidRgn )
OSStatus err = noErr;
// resolve the desired focus
switch( inDesiredFocus )
{
case kControlFocusNextPart:
case kControlFocusPrevPart: // toggle between focused or not
if( (fCurrentFocusPart == kControlNoPart) && inFocusEverything )
inDesiredFocus = kControlButtonPart;
else
inDesiredFocus = kControlNoPart;
break;
default: // we don't focus anything but the button
if( inDesiredFocus != kControlButtonPart )
inDesiredFocus = kControlNoPart;
break;
}
// handle invalidation if focus changed
if( fCurrentFocusPart != inDesiredFocus )
{
fCurrentFocusPart = inDesiredFocus;
err = Invalidate();
}
if( err == noErr )
*outActualFocus = fCurrentFocusPart;
return err;
}
// -----------------------------------------------------------------------------
// TextInput
// -----------------------------------------------------------------------------
// Handles text input.
//
OSStatus ColorSwatch::TextInput(
TCarbonEvent& inEvent )
{
if( inEvent.GetKind() == kEventTextInputUnicodeForKeyEvent )
{
UniChar uch = 0;
inEvent.GetParameter<UniChar>( kEventParamTextInputSendText,
typeUnicodeText, &uch );
// if space was hit, simulate a click in the button for keyboard nav support
if( uch == kSpaceCharCode )
{
ControlPartCode part;
HIViewSimulateClick( GetViewRef(), kControlButtonPart, 0, &part );
return noErr;
}
}
return eventNotHandledErr;
}
// -----------------------------------------------------------------------------
// PerformColorDrag
// -----------------------------------------------------------------------------
// Create a drag with a flavor containing the color swatch color.
//
void ColorSwatch::PerformColorDrag( EventRef event )
{
OSStatus err = noErr;
DragRef dragRef;
EventRecord convertedEvent;
ConvertEventRefToEventRecord( event, &convertedEvent );
// create the drag
err = NewDrag( &dragRef );
require_noerr( err, CantCreateDrag );
// add the color swatch flavor
err = AddDragItemFlavor( dragRef, 1, kFlavorTypeColor, &fSwatchColor,
sizeof( fSwatchColor ), NULL );
require_noerr( err, CantAddFlavor );
// create the drag image
GWorldPtr world;
{
GrafPtr save;
Rect bounds = { 0, 0, 10, 10 };
RGBColor black = { 0, 0, 0 };
err = NewGWorld( &world, 16, &bounds, NULL, NULL, 0 );
require_noerr( err, CantCreateGWorld );
GetPort( &save );
SetPort( world );
RGBForeColor( &fSwatchColor );
PaintRect( &bounds );
RGBForeColor( &black );
FrameRect( &bounds );
SetPort( save );
}
// add the drag image
{
Point dragPoint = { convertedEvent.where.v - 5, convertedEvent.where.h - 5 };
err = SetDragImage( dragRef, GetGWorldPixMap( world ), NULL, dragPoint,
kDragOpaqueTranslucency );
require_noerr( err, CantSetDragImage );
}
// perform the drag
{
RgnHandle tempRgn = NewRgn();
err = TrackDrag( dragRef, &convertedEvent, tempRgn );
DisposeRgn( tempRgn );
}
CantSetDragImage:
DisposeGWorld( world );
CantCreateGWorld:
CantAddFlavor:
CantCreateDrag:
return;
}
// -----------------------------------------------------------------------------
// GetColorFromDrag
// -----------------------------------------------------------------------------
// Grab the color from the drag. If the color flavor doesn't exist, return false.
//
bool ColorSwatch::GetColorFromDrag(
DragRef dragRef,
RGBColor* color )
{
OSStatus err = noErr;
UInt16 itemCount;
static DragRef lastDragRef = 0;
static bool lastResponse;
static RGBColor lastColor;
// return cached responses if this is the same drag
if( dragRef == lastDragRef )
{
color->red = lastColor.red;
color->green = lastColor.green;
color->blue = lastColor.blue;
return lastResponse;
}
lastDragRef = dragRef; // cache drag reference
err = CountDragItems( dragRef, &itemCount );
require_noerr( err, CantGetDragItemCount );
for( UInt16 i = 1; i <= itemCount; i++ )
{
DragItemRef itemRef;
UInt16 flavorCount;
err = GetDragItemReferenceNumber( dragRef, i, &itemRef );
require_noerr( err, CantGetDragItemReferenceNumber );
err = CountDragItemFlavors( dragRef, itemRef, &flavorCount );
require_noerr( err, CantGetDragItemFlavorCount );
for( UInt16 f = 1; f <= flavorCount; f++ )
{
FlavorType flavor;
Size size;
RGBColor tempColor;
err = GetFlavorType( dragRef, itemRef, f, &flavor );
require_noerr( err, CantGetDragFlavor );
if( flavor == kFlavorTypeColor )
{
err = GetFlavorDataSize( dragRef, itemRef, flavor, &size );
require_noerr( err, CantGetDragFlavorDataSize );
if( size == sizeof( tempColor ) )
{
err = GetFlavorData( dragRef, itemRef, flavor, &tempColor, &size, 0 );
require_noerr( err, CantGetDragFlavorData );
color->red = tempColor.red;
color->green = tempColor.green;
color->blue = tempColor.blue;
// cache responses
lastResponse = true;
lastColor.red = tempColor.red;
lastColor.green = tempColor.green;
lastColor.blue = tempColor.blue;
return true;
}
}
}
}
CantGetDragFlavorData:
CantGetDragFlavorDataSize:
CantGetDragFlavor:
CantGetDragItemFlavorCount:
CantGetDragItemReferenceNumber:
CantGetDragItemCount:
lastResponse = false; // cache response
return false;
}
// -----------------------------------------------------------------------------
// SendColorChangedCommandEvent
// -----------------------------------------------------------------------------
//
OSStatus ColorSwatch::SendColorChangedCommandEvent()
{
OSStatus err = noErr;
EventRef commandEvent;
HICommand theCommand;
err = CreateEvent( NULL, kEventClassCommand, kEventProcessCommand,
GetCurrentEventTime(), kEventAttributeNone, &commandEvent );
require_noerr( err, CantCreateEvent );
err = GetControlCommandID( GetViewRef(), &theCommand.commandID );
require_noerr( err, CantGetCommandID );
err = SetEventParameter( commandEvent, kEventParamDirectObject,
typeHICommand, sizeof( HICommand ), &theCommand );
require_noerr( err, CantSetEventParameter );
err = SendEventToEventTarget( commandEvent, GetApplicationEventTarget() );
CantSetEventParameter: