Skip to content
Navigation Menu
{{ message }}
forked from wyrover/book-code
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathBlt.cpp
More file actions
870 lines (712 loc) · 26 KB
/
Copy pathBlt.cpp
File metadata and controls
870 lines (712 loc) · 26 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
// Blt.cpp : implementation file
//
#include "stdafx.h"
#include "GDIExplorer.h"
#include "source.h"
#include "dest.h"
#include "IntEdit.h"
#include "image.h"
#include "idcombo.h"
#include "bmselect.h"
#include "brdemo.h"
#include "bmw.h"
#include "strmode.h"
#include "extrops.h"
#include "Blt.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CBlt property page
IMPLEMENT_DYNCREATE(CBlt, CPropertyPage)
CBlt::CBlt() : CPropertyPage(CBlt::IDD)
{
lasterror = 0;
}
CBlt::CBlt(int caption) : CPropertyPage(CBlt::IDD, caption)
{
initialized = FALSE;
lasterror = 0;
//{{AFX_DATA_INIT(CBlt)
//}}AFX_DATA_INIT
}
CBlt::~CBlt()
{
}
void CBlt::DoDataExchange(CDataExchange* pDX)
{
CPropertyPage::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CBlt)
DDX_Control(pDX, IDC_XSRC_CAPTION, c_c_SrcX);
DDX_Control(pDX, IDC_YSRC_CAPTION, c_c_SrcY);
DDX_Control(pDX, IDC_ROP_BORDER, c_Rop_Caption);
DDX_Control(pDX, IDC_YMASKSPIN, c_YMaskSpin);
DDX_Control(pDX, IDC_YMASK_CAPTION, c_c_YMask);
DDX_Control(pDX, IDC_YMASK, c_YMask);
DDX_Control(pDX, IDC_XMASKSPIN, c_XMaskSpin);
DDX_Control(pDX, IDC_XMASK_CAPTION, c_c_XMask);
DDX_Control(pDX, IDC_XMASK, c_XMask);
DDX_Control(pDX, IDC_WIDTH, c_c_SourceWidth);
DDX_Control(pDX, IDC_HEIGHT, c_c_SourceHeight);
DDX_Control(pDX, IDC_PT2_Y, c_c_pt2y);
DDX_Control(pDX, IDC_PT2_X, c_c_pt2x);
DDX_Control(pDX, IDC_PT1_Y, c_c_pt1y);
DDX_Control(pDX, IDC_PT1_X, c_c_pt1x);
DDX_Control(pDX, IDC_PT0_Y, c_c_pt0y);
DDX_Control(pDX, IDC_PT0_X, c_c_pt0x);
DDX_Control(pDX, IDC_ROP_CAPTION, c_c_Rop);
DDX_Control(pDX, IDC_MASK_CTL_CAPTION, c_c_MaskCtl);
DDX_Control(pDX, IDC_CLEARMASK, c_ClearMask);
DDX_Control(pDX, IDC_SETMASK, c_SetMask);
DDX_Control(pDX, IDC_EXTENDED, c_Extended);
DDX_Control(pDX, IDC_SRCLRYSPIN, c_SrclrYSpin);
DDX_Control(pDX, IDC_SRCLRXSPIN, c_SrclrXSpin);
DDX_Control(pDX, IDC_PLGYSPIN, c_PlgYSpin);
DDX_Control(pDX, IDC_PLGY, c_PlgY);
DDX_Control(pDX, IDC_PLGXSPIN, c_PlgXSpin);
DDX_Control(pDX, IDC_PLGX, c_PlgX);
DDX_Control(pDX, IDC_BITMAP_CAPTION, c_c_Bitmap);
DDX_Control(pDX, IDC_SRCLRY, c_SrclrY);
DDX_Control(pDX, IDC_SRCLRX, c_SrclrX);
DDX_Control(pDX, IDC_BRUSH_CAPTION, c_c_Brush);
DDX_Control(pDX, IDC_ERROR, c_Error);
DDX_Control(pDX, IDC_CLEARW, c_ClearW);
DDX_Control(pDX, IDC_CLEARB, c_ClearB);
DDX_Control(pDX, IDC_DEST, c_Dest);
DDX_Control(pDX, IDC_SOURCE, c_Source);
DDX_Control(pDX, IDC_ULYSPIN, c_ulYSpin);
DDX_Control(pDX, IDC_ULXSPIN, c_ulXSpin);
DDX_Control(pDX, IDC_LRYSPIN, c_lrYSpin);
DDX_Control(pDX, IDC_LRY, c_lrY);
DDX_Control(pDX, IDC_LRXSPIN, c_lrXSpin);
DDX_Control(pDX, IDC_LRX, c_lrX);
DDX_Control(pDX, IDC_SRCYSPIN, c_SrcYSpin);
DDX_Control(pDX, IDC_SRCY, c_SrcY);
DDX_Control(pDX, IDC_SRCXSPIN, c_SrcXSpin);
DDX_Control(pDX, IDC_SRCX, c_SrcX);
DDX_Control(pDX, IDC_ULY, c_ulY);
DDX_Control(pDX, IDC_ULX, c_ulX);
DDX_Control(pDX, IDC_DOBLT, c_DoBlt);
DDX_Control(pDX, IDC_BITMAP, c_BitmapSelect);
DDX_Control(pDX, IDC_OP, c_Op);
DDX_Control(pDX, IDC_MASK, c_Mask);
DDX_Control(pDX, IDC_MASK_CAPTION, c_c_Mask);
DDX_Control(pDX, IDC_BRUSH, c_BrDemo);
//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CBlt, CPropertyPage)
//{{AFX_MSG_MAP(CBlt)
ON_EN_CHANGE(IDC_SRCX, OnChangeSrcx)
ON_EN_CHANGE(IDC_SRCY, OnChangeSrcy)
ON_EN_CHANGE(IDC_LRX, OnChangeLrx)
ON_EN_CHANGE(IDC_LRY, OnChangeLry)
ON_EN_CHANGE(IDC_ULX, OnChangeUlx)
ON_EN_CHANGE(IDC_ULY, OnChangeUly)
ON_BN_CLICKED(IDC_DOBLT, OnDoblt)
ON_BN_CLICKED(IDC_CLEARW, OnClearW)
ON_BN_CLICKED(IDC_CLEARB, OnClearB)
ON_CBN_SELENDOK(IDC_BITMAP, OnSelendokBitmap)
ON_BN_CLICKED(IDC_EXTENDED, OnExtended)
ON_EN_CHANGE(IDC_SRCLRX, OnChangeSrclrx)
ON_EN_CHANGE(IDC_SRCLRY, OnChangeSrclry)
ON_BN_CLICKED(ID_EDIT_COPY, OnCopy)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CBlt message handlers
/****************************************************************************
* CBlt::endInitDialog
* Result: void
*
* Effect:
* Finishes up dialog initialization
****************************************************************************/
void CBlt::endInitDialog()
{
//================================================================
initialized = TRUE;
//================================================================
makeOp();
updateSource();
updateControls();
}
/****************************************************************************
* CBlt::maskShow
* Inputs:
* BOOL show: TRUE to show, FALSE to hide
* Result: void
*
* Effect:
* Shows all the mask-related controls
****************************************************************************/
void CBlt::maskShow(BOOL show)
{
int sw = (show ? SW_SHOW : SW_HIDE);
int nsw= (show ? SW_HIDE : SW_SHOW);
c_SetMask.ShowWindow(sw);
c_ClearMask.ShowWindow(sw);
c_c_MaskCtl.ShowWindow(sw);
c_c_Mask.ShowWindow(sw);
c_Mask.ShowWindow(sw);
c_XMask.ShowWindow(sw);
c_c_XMask.ShowWindow(sw);
c_XMaskSpin.ShowWindow(sw);
c_YMask.ShowWindow(sw);
c_c_YMask.ShowWindow(sw);
c_YMaskSpin.ShowWindow(sw);
}
/****************************************************************************
* CBlt::plgShow
* Inputs:
* BOOL show: TRUE to show, FALSE to hide
* Result: void
*
* Effect:
* Shows or hides the PlgBlt coordinate controls
****************************************************************************/
void CBlt::plgShow(BOOL show)
{
int sw = (show ? SW_SHOW : SW_HIDE);
int nsw= (show ? SW_HIDE : SW_SHOW);
c_PlgX.ShowWindow(sw);
c_PlgXSpin.ShowWindow(sw);
c_PlgY.ShowWindow(sw);
c_PlgYSpin.ShowWindow(sw);
c_SrclrYSpin.ShowWindow(sw);
c_SrclrXSpin.ShowWindow(sw);
c_SrclrX.SetReadOnly(!show);
c_SrclrY.SetReadOnly(!show);
c_c_pt1x.ShowWindow(sw);
c_c_pt1y.ShowWindow(sw);
c_c_pt2x.ShowWindow(sw);
c_c_pt2y.ShowWindow(sw);
c_SrclrXSpin.ShowWindow(sw);
c_SrclrYSpin.ShowWindow(sw);
c_SrclrXSpin.EnableWindow(show);
c_SrclrYSpin.EnableWindow(show);
c_SrclrX.SetReadOnly(!show);
c_SrclrY.SetReadOnly(!show);
maskShow(show);
c_Rop_Caption.ShowWindow(nsw); // HIDE this for plg
c_c_Rop.ShowWindow(sw); // replace with this caption
}
/****************************************************************************
* CBlt::makeOp
* Result: void
*
* Effect:
* Formats the operation in printable form
*
* Notes:
* This is not implemented in this class but by each of the subclasses
****************************************************************************/
void CBlt::makeOp()
{
// Does nothing
}
BOOL CBlt::OnInitDialog()
{
CPropertyPage::OnInitDialog();
CRect r;
c_Dest.getObjectRect(&r);
c_ulX.SetVal(0);
c_ulY.SetVal(0);
c_lrX.SetVal(r.Width());
c_lrY.SetVal(r.Height());
c_ulXSpin.SetRange(0,r.Width());
c_ulYSpin.SetRange(0,r.Height());
c_lrXSpin.SetRange(0,r.Width() );
c_lrYSpin.SetRange(0,r.Height());
c_Source.getObjectRect(&r);
c_SrcX.SetVal(0);
c_SrcY.SetVal(0);
c_SrcXSpin.SetRange(0, r.Width() - 1);
c_SrcYSpin.SetRange(0, r.Height() - 1);
c_Error.SetWindowText(_T(""));
c_BitmapSelect.Load(); // no selection by ID
c_BitmapSelect.SetCurSel(0); // select by position, position 0
c_Dest.createBitmap();
// For now, assume that we are *not* a PlgBlt window
plgShow(FALSE);
// Place the correct opcode in the button
CString s;
s.LoadString(opid);
c_DoBlt.SetWindowText(s);
return TRUE; // return TRUE unless you set the focus to a control
// EXCEPTION: OCX Property Pages should return FALSE
}
void CBlt::OnChangeSrcx()
{
makeOp();
}
void CBlt::OnChangeSrcy()
{
makeOp();
}
void CBlt::OnChangeLrx()
{
makeOp();
}
void CBlt::OnChangeLry()
{
makeOp();
}
void CBlt::OnChangeUlx()
{
makeOp();
}
void CBlt::OnChangeUly()
{
makeOp();
}
/****************************************************************************
* CBlt::doBLT
* Result: void
*
* Effect:
* Does nothing. This must be implemented in derived classes from this
* abstract base class
****************************************************************************/
void CBlt::doBLT()
{
// Does nothing. Subclasses must implement this
ASSERT(FALSE); // this should never happen
}
/****************************************************************************
* CBlt::OnDoblt
* Result: void
*
* Effect:
* Performs the BitBlt desired. This works by doing the BitBlt from
* the offscreen bitmap in source to the offscreen bitmap in dest,
* then forcing dest to redraw.
****************************************************************************/
void CBlt::OnDoblt()
{
doBLT();
}
void CBlt::OnClearW()
{
c_Dest.clearBitmap();
}
void CBlt::OnClearB()
{
c_Dest.clearBitmap(0);
}
/****************************************************************************
* CBlt::isSourceRop
* Inputs:
* int rop: ROP code
* Result: BOOL
* TRUE if ROP is a source-using ROP
* FALSE if ROP is not a source-using ROP
****************************************************************************/
BOOL CBlt::isSourceRop(int rop)
{
// These come from the extended ROP codes...
switch(rop)
{ /* extended rop code */
case extrop_0: // 00: BLACKNESS
case extrop_DPon: // 05: --
case extrop_DPna: // 0A: --
case extrop_Pn: // 0F: --
case extrop_PDna: // 50: --
case extrop_Dn: // 55: DSTINVERT
case extrop_DPx: // 5A: PATINVERT
case extrop_DPan: // 5F: --
case extrop_DPa: // A0: --
case extrop_PDxn: // A5: --
case extrop_D: // AA: --
case extrop_DPno: // AF: --
case extrop_P: // F0: PATCOPY
case extrop_PDno: // F5: --
case extrop_DPo: // FA: --
case extrop_1: // FF: WHITENESS
return FALSE;
} /* extended rop code */
return TRUE;
}
/****************************************************************************
* CBlt::isPatRop
* Inputs:
* int rop: ROP code
* Result: BOOL
* TRUE if the rop requires a pattern (brush)
* FALSE if the rop does not require a pattern
****************************************************************************/
BOOL CBlt::isPatRop(int rop)
{
switch(rop)
{ /* has pattern? */
case extrop_0: // BLACKNESS
case extrop_DSon: // NOTSRCERASE
case extrop_DSna:
case extrop_Sn: // NOTSRCCOPY
case extrop_SDna:
case extrop_Dn: // DSTINVERT
case extrop_DSx: // SRCINVERT
case extrop_DSan:
case extrop_DSa: // SRCAND
case extrop_DSxn:
case extrop_D:
case extrop_DSno: // MERGEPAINT
case extrop_S: // SRCCOPY
case extrop_SDno:
case extrop_DSo: // SRCPAINT
case extrop_1: // WHITENESS
return FALSE;
} /* has pattern? */
return TRUE;
}
/****************************************************************************
* CBlt::hasSource
* Result: BOOL
* TRUE if the rop operator uses a source operand
* FALSE if it does not use a source operand
* Notes:
* The base class always returns true; the derived classes may return
* false as well
****************************************************************************/
BOOL CBlt::hasSource()
{
return TRUE;
}
/****************************************************************************
* CBlt::showSourceControls
* Inputs:
* BOOL show: TRUE to show, FALSE to hide
* Result: void
*
* Effect:
* Shows or hides all the source controls
****************************************************************************/
void CBlt::showSourceControls(BOOL show)
{
int sw = (show ? SW_SHOW : SW_HIDE);
if(!initialized)
return;
c_SrcXSpin.ShowWindow(sw);
c_SrcYSpin.ShowWindow(sw);
c_SrcX.ShowWindow(sw);
c_SrcY.ShowWindow(sw);
c_SrclrX.ShowWindow(sw);
c_SrclrY.ShowWindow(sw);
c_BitmapSelect.ShowWindow(sw);
c_Source.ShowWindow(sw);
c_c_Bitmap.ShowWindow(sw);
c_c_SrcX.ShowWindow(sw);
c_c_SrcY.ShowWindow(sw);
c_c_SourceWidth.ShowWindow(sw);
c_c_SourceHeight.ShowWindow(sw);
// We only show the spin controls if they are enabled and we are
// in show mode; otherwise they are always hidden
int sw1 = show && c_SrclrXSpin.IsWindowEnabled() ? SW_SHOW : SW_HIDE;
c_SrclrXSpin.ShowWindow(sw1);
c_SrclrYSpin.ShowWindow(sw1);
}
/****************************************************************************
* CBlt::updateControls
* Result: void
*
* Effect:
* Adjusts values of the controls. This includes:
* - Setting the limits for the source bitmap controls
****************************************************************************/
void CBlt::updateControls()
{
if(!initialized)
return;
showSourceControls(hasSource());
if(hasSource())
{ /* has source */
CBitmap * bitmap = c_Source.getBitmap();
CClientDC dc(&c_Source);
if(bitmap != NULL)
{ /* has source bitmap */
CSize newsz = getBitmapSize(&dc, *bitmap);
CSize oldsz(c_SrcX.GetVal(), c_SrcY.GetVal());
// Constrain the starting position to be within the size
if(oldsz.cx >= newsz.cx)
{ /* make smaller x */
c_SrcX.SetVal(newsz.cx - 1);
c_SrcXSpin.SetRange(0, newsz.cx - 1);
} /* make smaller x */
if(oldsz.cy >= newsz.cy)
{ /* make smaller y */
c_SrcY.SetVal(newsz.cy - 1);
c_SrcYSpin.SetRange(0, newsz.cy - 1);
} /* make smaller y */
c_SrcXSpin.SetRange(0, newsz.cx - 1);
c_SrcYSpin.SetRange(0, newsz.cy - 1);
// Constrain the height and width of the destination to not exceed
// the source dimensions.
// TODO: implement this
// Set size parameters for display. Do test to avoid recursive
// loop caused by this set triggering another EN_CHANGE
// notification
if(c_SrclrX.GetVal() != newsz.cx)
c_SrclrX.SetVal(newsz.cx);
if(c_SrclrY.GetVal() != newsz.cy)
c_SrclrY.SetVal(newsz.cy);
// Set the spin range in case we actually use it
c_SrclrXSpin.SetRange(0, newsz.cx);
c_SrclrYSpin.SetRange(0, newsz.cy);
// Now enable the controls for setting the x,y source position
c_SrcXSpin.EnableWindow(TRUE);
c_SrcYSpin.EnableWindow(TRUE);
c_SrcX.EnableWindow(TRUE);
c_SrcY.EnableWindow(TRUE);
c_SrclrX.ShowWindow(SW_SHOW);
c_SrclrY.ShowWindow(SW_SHOW);
// Show the spin controls only if they are enabled...
if(c_SrclrXSpin.IsWindowEnabled())
c_SrclrXSpin.ShowWindow(SW_SHOW);
if(c_SrclrYSpin.IsWindowEnabled())
c_SrclrYSpin.ShowWindow(SW_SHOW);
} /* has source bitmap */
else
{ /* no source bitmap */
c_SrcXSpin.EnableWindow(FALSE);
c_SrcYSpin.EnableWindow(FALSE);
c_SrcX.EnableWindow(FALSE);
c_SrcY.EnableWindow(FALSE);
c_SrclrX.ShowWindow(SW_HIDE);
c_SrclrY.ShowWindow(SW_HIDE);
c_SrclrXSpin.ShowWindow(SW_HIDE);
c_SrclrYSpin.ShowWindow(SW_HIDE);
} /* no source bitmap */
} /* has source */
enableOp();
}
/****************************************************************************
* CBlt::getSourceBitmapSize
* Result: CSize
* Size of bitmap, or 0,0 if not loaded
****************************************************************************/
CSize CBlt::getSourceBitmapSize()
{
CBitmap * bm = c_Source.getBitmap();
CClientDC dc(&c_Source);
return getBitmapSize(&dc, *bm);
}
/****************************************************************************
* CBlt::updateSource
* Inputs:
*
* Result: void
*
* Effect:
* Updates the source bitmap
****************************************************************************/
void CBlt::updateSource()
{
int item = c_BitmapSelect.GetCurItem();
c_Source.setBitmap(item);
}
void CBlt::OnSelendokBitmap()
{
updateSource();
updateControls();
}
/****************************************************************************
* CBlt::getRopName
* Inputs:
* CString &s: Pointer to a string of the form "NAME: description"
* Result: CString
* A string which contains only "NAME"
* Effect:
* Creates a new temporary string object
****************************************************************************/
CString CBlt::getRopName(CString &s)
{
return s.SpanExcluding(_T(":"));
}
/****************************************************************************
* CBlt::loadRop
* Inputs:
* BOOL ext: TRUE to load extended opcodes, FALSE to load normal
* Result: void
*
* Effect:
* This has no effect; it must be defined in the derived classes to
* have an implementation
****************************************************************************/
void CBlt::loadRop(BOOL ext)
{
// Does nothing. Implement in subclasses
}
void CBlt::OnExtended()
{
loadRop(c_Extended.GetCheck());
}
/****************************************************************************
* CBlt::OnChangeSrclr[xy]
* Result: void
*
* Effect:
* Updates the set of controls including updating the opcode display.
* If we have controls that are readonly or disabled, then any changes
* were made by other parts of the program, not by user action, so
* we avoid doing a redundant update by checking for these conditions.
****************************************************************************/
void CBlt::OnChangeSrclrx()
{
if(::IsWindow(c_SrclrX.m_hWnd) && c_SrclrX.IsWindowEnabled() && !c_SrclrX.GetReadOnly())
makeOp();
}
void CBlt::OnChangeSrclry()
{
if(::IsWindow(c_SrclrY.m_hWnd) && c_SrclrY.IsWindowEnabled() && !c_SrclrY.GetReadOnly())
makeOp();
}
/****************************************************************************
* CBlt::queryBrush
* Inputs:
* LOGBRUSH * lb: Pointer to brush structure
* Result: BOOL
* TRUE if a brush was returned
* FALSE if no brush was returned
* Effect:
* Sends a query to all siblings. If a sibling fills in the brush
* structure, it returns TRUE having filled in the brush structure.
* If the brush dialog is not active, no other dialog is supposed to
* return a nonzero value (as from DefWindowProc).
****************************************************************************/
BOOL CBlt::queryBrush(LOGBRUSH * lb)
{
return QuerySiblings(0, (LPARAM)lb);
}
BOOL CBlt::OnSetActive()
{
// TODO: Add your specialized code here and/or call the base class
return CPropertyPage::OnSetActive();
}
/****************************************************************************
* CBlt::createBrush
* Inputs:
* CBrush * br: Brush object to have real brush attached
* Result: BOOL
* TRUE if successful
* FALSE if error
* Effect:
* If the brush selector is active, will create a real brush
****************************************************************************/
BOOL CBlt::createBrush(CBrush * br)
{
LOGBRUSH lbr;
if(!queryBrush(&lbr))
return FALSE; // brush selector page not active
if(br->m_hObject != NULL)
br->DeleteObject();
if(lbr.lbStyle == (UINT)-1)
{ /* stock brush */
return br->CreateStockObject(lbr.lbColor);
} /* stock brush */
return br->CreateBrushIndirect(&lbr);
}
/****************************************************************************
* CBlt::setLastError
* Result: void
*
* Effect:
* Sets the lasterror code to the c_Error box
****************************************************************************/
void CBlt::setLastError()
{
if(lasterror == 0)
{ /* no error */
c_Error.SetWindowText(_T(""));
return;
} /* no error */
LPTSTR s;
if(::FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM,
NULL,
lasterror,
0,
(LPTSTR)&s,
0,
NULL) == 0)
{ /* failed */
CString t;
t.Format(_T("%08lx"), lasterror);
c_Error.SetWindowText(t);
} /* failed */
else
{ /* success */
c_Error.SetWindowText(s);
LocalFree(s);
} /* success */
MessageBeep(MB_ICONERROR); // warn user that error occurred
}
/****************************************************************************
* CBlt::enableOp
* Result: void
*
* Effect:
* None. Implement in subclass
****************************************************************************/
void CBlt::enableOp()
{
ASSERT(FALSE);
}
/****************************************************************************
* CBlt::OnCopy
* Result: void
*
* Effect:
* Creates a new bitmap, copies the contents of the target bitmap to it,
* and adds the resulting bitmap to the clipboard.
* Notes:
* The coordinates transferred are based on the origin and width
* parameters for the destintation bitmap.
****************************************************************************/
void CBlt::OnCopy()
{
CClientDC destDC(&c_Dest);
// Create a bitmap into which we copy the current dest bitmap
CDC memDC;
memDC.CreateCompatibleDC(&destDC);
CBitmap bm;
CRect r;
c_Dest.getObjectRect(&r);
CPoint org = getCopyOrg();
CSize ext = getCopyExt();
bm.CreateCompatibleBitmap(&destDC, ext.cx, ext.cy);
CBitmap * oldbm = memDC.SelectObject(&bm);
memDC.BitBlt(0, 0, ext.cx, ext.cy, &destDC, org.x, org.y, SRCCOPY);
OpenClipboard();
::EmptyClipboard();
::SetClipboardData(CF_BITMAP, bm.m_hObject);
CloseClipboard();
memDC.SelectObject(oldbm);
bm.Detach(); // make sure bitmap not deleted with CBitmap object
}
/****************************************************************************
* CBlt::getCopyOrg
* Result: CPoint
* The point at which a blt copy is supposed to start
* Notes:
* This is the default operation. More complex operations, such as
* PlgBlt, may override this
****************************************************************************/
CPoint CBlt::getCopyOrg()
{
CRect r;
c_Dest.getObjectRect(&r);
return CPoint(r.left + c_ulX.GetVal(), r.top + c_ulY.GetVal());
}
/****************************************************************************
* CBlt::getCopyExt
* Result: CSize
*
* Effect:
* Returns the size of the copy bitmap. More complex operations may
* override this virtual method
****************************************************************************/
CSize CBlt::getCopyExt()
{
return CSize(c_lrX.GetVal(), c_lrY.GetVal());
}
You can’t perform that action at this time.