Repository navigation
Expand file tree
/
Copy pathSurface.cpp
More file actions
893 lines (796 loc) · 19.9 KB
/
Copy pathSurface.cpp
File metadata and controls
893 lines (796 loc) · 19.9 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
/*
* Copyright 2010-2013 OpenXcom Developers.
*
* This file is part of OpenXcom.
*
* OpenXcom is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* OpenXcom is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with OpenXcom. If not, see <http://www.gnu.org/licenses/>.
*/
#include "Surface.h"
#include "Screen.h"
#include "ShaderDraw.h"
#include <vector>
#include <fstream>
#include <SDL_gfxPrimitives.h>
#include <SDL_image.h>
#include <SDL_endian.h>
#include "Palette.h"
#include "Exception.h"
#include "ShaderMove.h"
#include <stdlib.h>
#ifdef _WIN32
#include <malloc.h>
#endif
#if defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR)
#define _aligned_malloc __mingw_aligned_malloc
#define _aligned_free __mingw_aligned_free
#endif //MINGW
#include "Language.h"
#ifdef __MORPHOS__
#include <ppcinline/exec.h>
#endif
namespace OpenXcom
{
namespace
{
/**
* Helper function counting pitch in bytes with 16byte padding
* @param bpp bytes per pixel
* @param width number of pixel in row
* @return pitch in bytes
*/
inline int GetPitch(int bpp, int width)
{
return ((bpp/8) * width + 15) & ~0xF;
}
/**
* Helper function creating aligned buffer
* @param bpp bytes per pixel
* @param width number of pixel in row
* @param height number of rows
* @return pointer to memory
*/
inline void* NewAligned(int bpp, int width, int height)
{
const int pitch = GetPitch(bpp, width);
const int total = pitch * height;
void* buffer = 0;
#ifndef _WIN32
#ifdef __MORPHOS__
buffer = calloc( total, 1 );
if (!buffer)
{
throw Exception("Failed to allocate surface");
}
#else
int rc;
if ((rc = posix_memalign(&buffer, 16, total)))
{
throw Exception(strerror(rc));
}
#endif
#else
// of course Windows has to be difficult about this!
buffer = _aligned_malloc(total, 16);
if (!buffer)
{
throw Exception("Failed to allocate surface");
}
#endif
memset(buffer, 0, total);
return buffer;
}
/**
* Helper function release aligned memory
* @param buffer buffer to delete
*/
inline void DeleteAligned(void* buffer)
{
if (buffer)
{
#ifdef _WIN32
_aligned_free(buffer);
#else
free(buffer);
#endif
}
}
} //namespace
/**
* Sets up a blank 8bpp surface with the specified size and position,
* with pure black as the transparent color.
* @note Surfaces don't have to fill the whole size since their
* background is transparent, specially subclasses with their own
* drawing logic, so it just covers the maximum drawing area.
* @param width Width in pixels.
* @param height Height in pixels.
* @param x X position in pixels.
* @param y Y position in pixels.
* @param bpp Bits-per-pixel depth.
*/
Surface::Surface(int width, int height, int x, int y, int bpp) : _x(x), _y(y), _visible(true), _hidden(false), _redraw(false), _alignedBuffer(0)
{
_alignedBuffer = NewAligned(bpp, width, height);
_surface = SDL_CreateRGBSurfaceFrom(_alignedBuffer, width, height, bpp, GetPitch(bpp, width), 0, 0, 0, 0);
if (_surface == 0)
{
throw Exception(SDL_GetError());
}
SDL_SetColorKey(_surface, SDL_SRCCOLORKEY, 0);
_crop.w = 0;
_crop.h = 0;
_crop.x = 0;
_crop.y = 0;
_clear.x = 0;
_clear.y = 0;
_clear.w = getWidth();
_clear.h = getHeight();
}
/**
* Performs a deep copy of an existing surface.
* @param other Surface to copy from.
*/
Surface::Surface(const Surface& other)
{
//if is native OpenXcom aligned surface
if(other._alignedBuffer)
{
Uint8 bpp = other._surface->format->BitsPerPixel;
int width = other.getWidth();
int height = other.getHeight();
int pitch = GetPitch(bpp, width);
_alignedBuffer = NewAligned(bpp, width, height);
_surface = SDL_CreateRGBSurfaceFrom(_alignedBuffer, width, height, bpp, pitch, 0, 0, 0, 0);
SDL_SetColorKey(_surface, SDL_SRCCOLORKEY, 0);
//cant call `setPalette` because its virtual function and it dont work correctly in constructor
SDL_SetColors(_surface, other.getPalette(), 0, 255);
memcpy(_alignedBuffer, other._alignedBuffer, height*pitch);
}
else
{
_surface = SDL_ConvertSurface(other._surface, other._surface->format, other._surface->flags);
_alignedBuffer = 0;
}
if (_surface == 0)
{
throw Exception(SDL_GetError());
}
_x = other._x;
_y = other._y;
_crop.w = other._crop.w;
_crop.h = other._crop.h;
_crop.x = other._crop.x;
_crop.y = other._crop.y;
_clear.w = other._clear.w;
_clear.h = other._clear.h;
_clear.x = other._clear.x;
_clear.y = other._clear.y;
_visible = other._visible;
_hidden = other._hidden;
_redraw = other._redraw;
}
/**
* Deletes the surface from memory.
*/
Surface::~Surface()
{
DeleteAligned(_alignedBuffer);
SDL_FreeSurface(_surface);
}
/**
* Loads the contents of an X-Com SCR image file into
* the surface. SCR files are simply uncompressed images
* containing the palette offset of each pixel.
* @param filename Filename of the SCR image.
* @sa http://www.ufopaedia.org/index.php?title=Image_Formats#SCR_.26_DAT
*/
void Surface::loadScr(const std::string &filename)
{
// Load file and put pixels in surface
std::ifstream imgFile(filename.c_str(), std::ios::binary);
if (!imgFile)
{
throw Exception(filename + " not found");
}
std::vector<char> buffer((std::istreambuf_iterator<char>(imgFile)), (std::istreambuf_iterator<char>()));
// Lock the surface
lock();
int x = 0, y = 0;
for (std::vector<char>::iterator i = buffer.begin(); i != buffer.end(); ++i)
{
setPixelIterative(&x, &y, *i);
}
// Unlock the surface
unlock();
}
/**
* Loads the contents of an image file of a
* known format into the surface.
* @param filename Filename of the image.
*/
void Surface::loadImage(const std::string &filename)
{
// Destroy current surface (will be replaced)
DeleteAligned(_alignedBuffer);
SDL_FreeSurface(_surface);
_alignedBuffer = 0;
_surface = 0;
// SDL only takes UTF-8 filenames
// so here's an ugly hack to match this ugly reasoning
std::string utf8 = Language::wstrToUtf8(Language::fsToWstr(filename));
// Load file
_surface = IMG_Load(utf8.c_str());
if (!_surface)
{
std::string err = filename + ":" + IMG_GetError();
throw Exception(err);
}
}
/**
* Loads the contents of an X-Com SPK image file into
* the surface. SPK files are compressed with a custom
* algorithm since they're usually full-screen images.
* @param filename Filename of the SPK image.
* @sa http://www.ufopaedia.org/index.php?title=Image_Formats#SPK
*/
void Surface::loadSpk(const std::string &filename)
{
// Load file and put pixels in surface
std::ifstream imgFile (filename.c_str(), std::ios::in | std::ios::binary);
if (!imgFile)
{
throw Exception(filename + " not found");
}
// Lock the surface
lock();
Uint16 flag;
Uint8 value;
int x = 0, y = 0;
while (imgFile.read((char*)&flag, sizeof(flag)))
{
flag = SDL_SwapLE16(flag);
if (flag == 65535)
{
imgFile.read((char*)&flag, sizeof(flag));
flag = SDL_SwapLE16(flag);
for (int i = 0; i < flag * 2; ++i)
{
setPixelIterative(&x, &y, 0);
}
}
else if (flag == 65534)
{
imgFile.read((char*)&flag, sizeof(flag));
flag = SDL_SwapLE16(flag);
for (int i = 0; i < flag * 2; ++i)
{
imgFile.read((char*)&value, 1);
setPixelIterative(&x, &y, value);
}
}
}
// Unlock the surface
unlock();
imgFile.close();
}
/**
* Loads the contents of a TFTD BDY image file into
* the surface. BDY files are compressed with a custom
* algorithm.
* @param filename Filename of the BDY image.
* @sa http://www.ufopaedia.org/index.php?title=Image_Formats#BDY
*/
void Surface::loadBdy(const std::string &filename)
{
// Load file and put pixels in surface
std::ifstream imgFile (filename.c_str(), std::ios::in | std::ios::binary);
if (!imgFile)
{
throw Exception(filename + " not found");
}
// Lock the surface
lock();
Uint8 dataByte;
int pixelCnt;
int x = 0, y = 0;
int currentRow = 0;
while (imgFile.read((char*)&dataByte, sizeof(dataByte)))
{
if (dataByte >= 129)
{
pixelCnt = 257 - (int)dataByte;
imgFile.read((char*)&dataByte, sizeof(dataByte));
currentRow = y;
for (int i = 0; i < pixelCnt; ++i)
{
if (currentRow == y) // avoid overscan into next row
setPixelIterative(&x, &y, dataByte);
}
}
else
{
pixelCnt = 1 + (int)dataByte;
currentRow = y;
for (int i = 0; i < pixelCnt; ++i)
{
imgFile.read((char*)&dataByte, sizeof(dataByte));
if (currentRow == y) // avoid overscan into next row
setPixelIterative(&x, &y, dataByte);
}
}
}
// Unlock the surface
unlock();
imgFile.close();
}
/**
* Clears the entire contents of the surface, resulting
* in a blank image.
*/
void Surface::clear()
{
if (_surface->flags & SDL_SWSURFACE) memset(_surface->pixels, 0, _surface->h*_surface->pitch);
else SDL_FillRect(_surface, &_clear, 0);
}
/**
* Shifts all the colors in the surface by a set amount.
* This is a common method in 8bpp games to simulate color
* effects for cheap.
* @param off Amount to shift.
* @param min Minimum color to shift to.
* @param max Maximum color to shift to.
* @param mul Shift multiplier.
*/
void Surface::offset(int off, int min, int max, int mul)
{
if (off == 0)
return;
// Lock the surface
lock();
for (int x = 0, y = 0; x < getWidth() && y < getHeight();)
{
Uint8 pixel = getPixel(x, y);
int p;
if (off > 0)
{
p = pixel * mul + off;
}
else
{
p = (pixel + off) / mul;
}
if (min != -1 && p < min)
{
p = min;
}
else if (max != -1 && p > max)
{
p = max;
}
if (pixel > 0)
{
setPixelIterative(&x, &y, p);
}
else
{
setPixelIterative(&x, &y, 0);
}
}
// Unlock the surface
unlock();
}
/**
* Inverts all the colors in the surface according to a middle point.
* Used for effects like shifting a button between pressed and unpressed.
* @param mid Middle point.
*/
void Surface::invert(Uint8 mid)
{
// Lock the surface
lock();
for (int x = 0, y = 0; x < getWidth() && y < getHeight();)
{
Uint8 pixel = getPixel(x, y);
if (pixel > 0)
{
setPixelIterative(&x, &y, pixel + 2 * ((int)mid - (int)pixel));
}
else
{
setPixelIterative(&x, &y, 0);
}
}
// Unlock the surface
unlock();
}
/**
* Runs any code the surface needs to keep updating every
* game cycle, like animations and other real-time elements.
*/
void Surface::think()
{
}
/**
* Draws the graphic that the surface contains before it
* gets blitted onto other surfaces. The surface is only
* redrawn if the flag is set by a property change, to
* avoid unecessary drawing.
*/
void Surface::draw()
{
_redraw = false;
clear();
}
/**
* Blits this surface onto another one, with its position
* relative to the top-left corner of the target surface.
* The cropping rectangle controls the portion of the surface
* that is blitted.
* @param surface Pointer to surface to blit onto.
*/
void Surface::blit(Surface *surface)
{
if (_visible && !_hidden)
{
if (_redraw)
draw();
SDL_Rect* cropper;
SDL_Rect target;
if (_crop.w == 0 && _crop.h == 0)
{
cropper = 0;
}
else
{
cropper = &_crop;
}
target.x = getX();
target.y = getY();
SDL_BlitSurface(_surface, cropper, surface->getSurface(), &target);
}
}
/**
* Copies the exact contents of another surface onto this one.
* Only the content that would overlap both surfaces is copied, in
* accordance with their positions. This is handy for applying
* effects over another surface without modifying the original.
* @param surface Pointer to surface to copy from.
*/
void Surface::copy(Surface *surface)
{
SDL_Rect from;
from.x = getX() - surface->getX();
from.y = getY() - surface->getY();
from.w = getWidth();
from.h = getHeight();
SDL_BlitSurface(surface->getSurface(), &from, _surface, 0);
}
/**
* Draws a filled rectangle on the surface.
* @param rect Pointer to Rect.
* @param color Color of the rectangle.
*/
void Surface::drawRect(SDL_Rect *rect, Uint8 color)
{
SDL_FillRect(_surface, rect, color);
}
/**
* Draws a line on the surface.
* @param x1 Start x coordinate in pixels.
* @param y1 Start y coordinate in pixels.
* @param x2 End x coordinate in pixels.
* @param y2 End y coordinate in pixels.
* @param color Color of the line.
*/
void Surface::drawLine(Sint16 x1, Sint16 y1, Sint16 x2, Sint16 y2, Uint8 color)
{
lineColor(_surface, x1, y1, x2, y2, Palette::getRGBA(getPalette(), color));
}
/**
* Draws a filled circle on the surface.
* @param x X coordinate in pixels.
* @param y Y coordinate in pixels.
* @param r Radius in pixels.
* @param color Color of the circle.
*/
void Surface::drawCircle(Sint16 x, Sint16 y, Sint16 r, Uint8 color)
{
filledCircleColor(_surface, x, y, r, Palette::getRGBA(getPalette(), color));
}
/**
* Draws a filled polygon on the surface.
* @param x Array of x coordinates.
* @param y Array of y coordinates.
* @param n Number of points.
* @param color Color of the polygon.
*/
void Surface::drawPolygon(Sint16 *x, Sint16 *y, int n, Uint8 color)
{
filledPolygonColor(_surface, x, y, n, Palette::getRGBA(getPalette(), color));
}
/**
* Draws a textured polygon on the surface.
* @param x Array of x coordinates.
* @param y Array of y coordinates.
* @param n Number of points.
* @param texture Texture for polygon.
* @param dx X offset of texture relative to the screen.
* @param dy Y offset of texture relative to the screen.
*/
void Surface::drawTexturedPolygon(Sint16 *x, Sint16 *y, int n, Surface *texture, int dx, int dy)
{
texturedPolygon(_surface, x, y, n, texture->getSurface(), dx, dy);
}
/**
* Draws a text string on the surface.
* @param x X coordinate in pixels.
* @param y Y coordinate in pixels.
* @param s Character string to draw.
* @param color Color of string.
*/
void Surface::drawString(Sint16 x, Sint16 y, const char *s, Uint8 color)
{
stringColor(_surface, x, y, s, Palette::getRGBA(getPalette(), color));
}
/**
* Changes the position of the surface in the X axis.
* @param x X position in pixels.
*/
void Surface::setX(int x)
{
_x = x;
}
/**
* Changes the position of the surface in the Y axis.
* @param y Y position in pixels.
*/
void Surface::setY(int y)
{
_y = y;
}
/**
* Changes the visibility of the surface. A hidden surface
* isn't blitted nor receives events.
* @param visible New visibility.
*/
void Surface::setVisible(bool visible)
{
_visible = visible;
}
/**
* Returns the visible state of the surface.
* @return Current visibility.
*/
bool Surface::getVisible() const
{
return _visible;
}
/**
* Resets the cropping rectangle set for this surface,
* so the whole surface is blitted.
*/
void Surface::resetCrop()
{
_crop.w = 0;
_crop.h = 0;
_crop.x = 0;
_crop.y = 0;
}
/**
* Returns the cropping rectangle for this surface.
* @return Pointer to the cropping rectangle.
*/
SDL_Rect *Surface::getCrop()
{
return &_crop;
}
/**
* Replaces a certain amount of colors in the surface's palette.
* @param colors Pointer to the set of colors.
* @param firstcolor Offset of the first color to replace.
* @param ncolors Amount of colors to replace.
*/
void Surface::setPalette(SDL_Color *colors, int firstcolor, int ncolors)
{
SDL_SetColors(_surface, colors, firstcolor, ncolors);
}
/**
* This is a separate visibility setting intended
* for temporary effects like window popups,
* so as to not override the default visibility setting.
* @note Do not confuse with setVisible!
* @param hidden Shown or hidden.
*/
void Surface::setHidden(bool hidden)
{
_hidden = hidden;
}
/**
* Locks the surface from outside access
* for pixel-level access. Must be unlocked
* afterwards.
* @sa unlock()
*/
void Surface::lock()
{
SDL_LockSurface(_surface);
}
/**
* Unlocks the surface after it's been locked
* to resume blitting operations.
* @sa lock()
*/
void Surface::unlock()
{
SDL_UnlockSurface(_surface);
}
/**
* help class used for Surface::blitNShade
*/
struct ColorReplace
{
/**
* Function used by ShaderDraw in Surface::blitNShade
* set shade and replace color in that surface
* @param dest destination pixel
* @param src source pixel
* @param shade value of shade of this surface
* @param newColor new color to set (it should be offseted by 4)
*/
static inline void func(Uint8& dest, const Uint8& src, const int& shade, const int& newColor, const int&)
{
if(src)
{
const int newShade = (src&15) + shade;
if (newShade > 15)
// so dark it would flip over to another color - make it black instead
dest = 15;
else
dest = newColor | newShade;
}
}
};
/**
* help class used for Surface::blitNShade
*/
struct StandartShade
{
/**
* Function used by ShaderDraw in Surface::blitNShade
* set shade
* @param dest destination pixel
* @param src source pixel
* @param shade value of shade of this surface
* @param notused
* @param notused
*/
static inline void func(Uint8& dest, const Uint8& src, const int& shade, const int&, const int&)
{
if(src)
{
const int newShade = (src&15) + shade;
if (newShade > 15)
// so dark it would flip over to another color - make it black instead
dest = 15;
else
dest = (src&(15<<4)) | newShade;
}
}
};
/**
* Specific blit function to blit battlescape terrain data in different shades in a fast way.
* Notice there is no surface locking here - you have to make sure you lock the surface yourself
* at the start of blitting and unlock it when done.
* @param surface to blit to
* @param x
* @param y
* @param off
* @param half some tiles are blitted only the right half
* @param newBaseColor Attention: the actual color + 1, because 0 is no new base color.
*/
void Surface::blitNShade(Surface *surface, int x, int y, int off, bool half, int newBaseColor)
{
ShaderMove<Uint8> src(this, x, y);
if(half)
{
GraphSubset g = src.getDomain();
g.beg_x = g.end_x/2;
src.setDomain(g);
}
if(newBaseColor)
{
--newBaseColor;
newBaseColor <<= 4;
ShaderDraw<ColorReplace>(ShaderSurface(surface), src, ShaderScalar(off), ShaderScalar(newBaseColor));
}
else
ShaderDraw<StandartShade>(ShaderSurface(surface), src, ShaderScalar(off));
}
/**
* Set the surface to be redrawn
*/
void Surface::invalidate()
{
_redraw = true;
}
/**
* Returns the help description of this surface,
* for example for showing in tooltips.
* @return String ID.
*/
std::string Surface::getTooltip() const
{
return _tooltip;
}
/**
* Changes the help description of this surface,
* for example for showing in tooltips.
* @param str String ID.
*/
void Surface::setTooltip(const std::string &tooltip)
{
_tooltip = tooltip;
}
/**
* Recreates the surface with a new size.
* Old contents will not be altered, and may be
* cropped to fit the new size.
* @param width Width in pixels.
* @param height Height in pixels.
*/
void Surface::resize(int width, int height)
{
// Set up new surface
Uint8 bpp = _surface->format->BitsPerPixel;
int pitch = GetPitch(bpp, width);
void *alignedBuffer = NewAligned(bpp, width, height);
SDL_Surface *surface = SDL_CreateRGBSurfaceFrom(alignedBuffer, width, height, bpp, pitch, 0, 0, 0, 0);
if (surface == 0)
{
throw Exception(SDL_GetError());
}
// Copy old contents
SDL_SetColorKey(surface, SDL_SRCCOLORKEY, 0);
SDL_SetColors(surface, getPalette(), 0, 255);
SDL_BlitSurface(_surface, 0, surface, 0);
// Delete old surface
DeleteAligned(_alignedBuffer);
SDL_FreeSurface(_surface);
_alignedBuffer = alignedBuffer;
_surface = surface;
_clear.w = getWidth();
_clear.h = getHeight();
}
/**
* Changes the width of the surface.
* @warning This is not a trivial setter!
* It will force the surface to be recreated for the new size.
* @param width New width in pixels.
*/
void Surface::setWidth(int width)
{
resize(width, getHeight());
_redraw = true;
}
/**
* Changes the height of the surface.
* @warning This is not a trivial setter!
* It will force the surface to be recreated for the new size.
* @param height New height in pixels.
*/
void Surface::setHeight(int height)
{
resize(getWidth(), height);
_redraw = true;
}
}