Commit | Line | Data |
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edfda783 | 1 | /* Image support for the NeXT/Open/GNUstep and MacOSX window system. |
114f9c96 | 2 | Copyright (C) 1989, 1992, 1993, 1994, 2005, 2006, 2008, 2009, 2010 |
32d235f8 | 3 | Free Software Foundation, Inc. |
edfda783 AR |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
32d235f8 | 7 | GNU Emacs is free software: you can redistribute it and/or modify |
edfda783 | 8 | it under the terms of the GNU General Public License as published by |
32d235f8 GM |
9 | the Free Software Foundation, either version 3 of the License, or |
10 | (at your option) any later version. | |
edfda783 AR |
11 | |
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
32d235f8 | 18 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
edfda783 | 19 | |
32d235f8 | 20 | /* |
edfda783 AR |
21 | Originally by Carl Edman |
22 | Updated by Christian Limpach (chris@nice.ch) | |
23 | OpenStep/Rhapsody port by Scott Bender (sbender@harmony-ds.com) | |
24 | MacOSX/Aqua port by Christophe de Dinechin (descubes@earthlink.net) | |
25 | GNUstep port and post-20 update by Adrian Robert (arobert@cogsci.ucsd.edu) | |
edfda783 AR |
26 | */ |
27 | ||
5a06864f AR |
28 | /* This should be the first include, as it may set up #defines affecting |
29 | interpretation of even the system includes. */ | |
08a494a3 | 30 | #include <config.h> |
b024548b | 31 | #include <setjmp.h> |
5a06864f | 32 | |
edfda783 AR |
33 | #include "lisp.h" |
34 | #include "dispextern.h" | |
35 | #include "nsterm.h" | |
36 | #include "frame.h" | |
37 | ||
38 | extern Lisp_Object QCfile, QCdata; | |
39 | ||
40 | /* call tracing */ | |
41 | #if 0 | |
42 | int image_trace_num = 0; | |
43 | #define NSTRACE(x) fprintf (stderr, "%s:%d: [%d] " #x "\n", \ | |
44 | __FILE__, __LINE__, ++image_trace_num) | |
45 | #else | |
46 | #define NSTRACE(x) | |
47 | #endif | |
48 | ||
49 | ||
50 | /* ========================================================================== | |
51 | ||
52 | C interface. This allows easy calling from C files. We could just | |
53 | compile everything as Objective-C, but that might mean slower | |
54 | compilation and possible difficulties on some platforms.. | |
55 | ||
56 | ========================================================================== */ | |
57 | ||
58 | void * | |
59 | ns_image_from_XBM (unsigned char *bits, int width, int height) | |
60 | { | |
61 | NSTRACE (ns_image_from_XBM); | |
62 | return [[EmacsImage alloc] initFromXBM: bits | |
63 | width: width height: height | |
64 | flip: YES]; | |
65 | } | |
66 | ||
67 | void * | |
68 | ns_image_for_XPM (int width, int height, int depth) | |
69 | { | |
70 | NSTRACE (ns_image_for_XPM); | |
71 | return [[EmacsImage alloc] initForXPMWithDepth: depth | |
72 | width: width height: height]; | |
73 | } | |
74 | ||
75 | void * | |
76 | ns_image_from_file (Lisp_Object file) | |
77 | { | |
78 | NSTRACE (ns_image_from_bitmap_file); | |
79 | return [EmacsImage allocInitFromFile: file]; | |
80 | } | |
81 | ||
82 | int | |
83 | ns_load_image (struct frame *f, struct image *img, | |
84 | Lisp_Object spec_file, Lisp_Object spec_data) | |
85 | { | |
7574650a | 86 | EmacsImage *eImg = nil; |
edfda783 AR |
87 | NSSize size; |
88 | ||
3d608a86 J |
89 | NSTRACE (ns_load_image); |
90 | ||
7574650a | 91 | if (STRINGP (spec_file)) |
edfda783 AR |
92 | { |
93 | eImg = [EmacsImage allocInitFromFile: spec_file]; | |
94 | } | |
7574650a | 95 | else if (STRINGP (spec_data)) |
edfda783 | 96 | { |
7574650a AS |
97 | NSData *data; |
98 | ||
99 | data = [NSData dataWithBytes: SDATA (spec_data) | |
100 | length: SBYTES (spec_data)]; | |
edfda783 AR |
101 | eImg = [[EmacsImage alloc] initWithData: data]; |
102 | [eImg setPixmapData]; | |
103 | } | |
104 | ||
105 | if (eImg == nil) | |
106 | { | |
107 | add_to_log ("Unable to load image %s", img->spec, Qnil); | |
108 | return 0; | |
109 | } | |
110 | ||
111 | size = [eImg size]; | |
112 | img->width = size.width; | |
113 | img->height = size.height; | |
114 | ||
115 | /* 4) set img->pixmap = emacsimage */ | |
116 | img->pixmap = eImg; | |
117 | return 1; | |
118 | } | |
119 | ||
120 | ||
121 | int | |
122 | ns_image_width (void *img) | |
123 | { | |
124 | return [(id)img size].width; | |
125 | } | |
126 | ||
127 | int | |
128 | ns_image_height (void *img) | |
129 | { | |
130 | return [(id)img size].height; | |
131 | } | |
132 | ||
133 | unsigned long | |
134 | ns_get_pixel (void *img, int x, int y) | |
135 | { | |
136 | return [(EmacsImage *)img getPixelAtX: x Y: y]; | |
137 | } | |
138 | ||
139 | void | |
140 | ns_put_pixel (void *img, int x, int y, unsigned long argb) | |
141 | { | |
142 | unsigned char alpha = (argb >> 24) & 0xFF; | |
143 | if (alpha == 0) | |
144 | alpha = 0xFF; | |
145 | [(EmacsImage *)img setPixelAtX: x Y: y toRed: (argb >> 16) & 0xFF | |
146 | green: (argb >> 8) & 0xFF blue: (argb & 0xFF) alpha: alpha]; | |
147 | } | |
148 | ||
149 | void | |
150 | ns_set_alpha (void *img, int x, int y, unsigned char a) | |
151 | { | |
152 | [(EmacsImage *)img setAlphaAtX: x Y: y to: a]; | |
153 | } | |
154 | ||
155 | ||
156 | /* ========================================================================== | |
157 | ||
158 | Class supporting bitmaps and images of various sorts. | |
159 | ||
160 | ========================================================================== */ | |
161 | ||
162 | @implementation EmacsImage | |
163 | ||
164 | static EmacsImage *ImageList = nil; | |
165 | ||
166 | + allocInitFromFile: (Lisp_Object)file | |
167 | { | |
168 | EmacsImage *image = ImageList; | |
4c7077c3 | 169 | NSImageRep *imgRep; |
edfda783 AR |
170 | Lisp_Object found; |
171 | ||
172 | /* look for an existing image of the same name */ | |
173 | while (image != nil && | |
174 | [[image name] compare: [NSString stringWithUTF8String: SDATA (file)]] | |
175 | != NSOrderedSame) | |
176 | image = [image imageListNext]; | |
177 | ||
178 | if (image != nil) | |
179 | { | |
180 | [image reference]; | |
181 | return image; | |
182 | } | |
183 | ||
184 | /* Search bitmap-file-path for the file, if appropriate. */ | |
185 | found = x_find_image_file (file); | |
186 | if (!STRINGP (found)) | |
187 | return nil; | |
188 | ||
189 | image = [[EmacsImage alloc] initByReferencingFile: | |
190 | [NSString stringWithUTF8String: SDATA (found)]]; | |
191 | ||
4c7077c3 AR |
192 | imgRep = [image bestRepresentationForDevice: nil]; |
193 | if (imgRep == nil) | |
edfda783 AR |
194 | { |
195 | [image release]; | |
196 | return nil; | |
197 | } | |
198 | ||
4c7077c3 AR |
199 | /* The next two lines cause the DPI of the image to be ignored. |
200 | This seems to be the behavior users expect. */ | |
201 | [image setScalesWhenResized: YES]; | |
202 | [image setSize: NSMakeSize([imgRep pixelsWide], [imgRep pixelsHigh])]; | |
203 | ||
edfda783 AR |
204 | [image setName: [NSString stringWithUTF8String: SDATA (file)]]; |
205 | [image reference]; | |
206 | ImageList = [image imageListSetNext: ImageList]; | |
207 | ||
208 | return image; | |
209 | } | |
210 | ||
211 | ||
212 | - reference | |
213 | { | |
214 | refCount++; | |
215 | return self; | |
216 | } | |
217 | ||
218 | ||
219 | - imageListSetNext: (id)arg | |
220 | { | |
221 | imageListNext = arg; | |
222 | return self; | |
223 | } | |
224 | ||
225 | ||
226 | - imageListNext | |
227 | { | |
228 | return imageListNext; | |
229 | } | |
230 | ||
231 | ||
232 | - (void)dealloc | |
233 | { | |
234 | id list = ImageList; | |
235 | ||
236 | if (refCount > 1) | |
237 | { | |
238 | refCount--; | |
239 | return; | |
240 | } | |
241 | ||
242 | [stippleMask release]; | |
243 | ||
244 | if (list == self) | |
245 | ImageList = imageListNext; | |
246 | else | |
247 | { | |
248 | while (list != nil && [list imageListNext] != self) | |
249 | list = [list imageListNext]; | |
250 | [list imageListSetNext: imageListNext]; | |
251 | } | |
252 | ||
253 | [super dealloc]; | |
254 | } | |
255 | ||
256 | ||
257 | - initFromXBM: (unsigned char *)bits width: (int)w height: (int)h | |
258 | flip: (BOOL)flip | |
259 | { | |
260 | return [self initFromSkipXBM: bits width: w height: h flip: flip length: 0]; | |
261 | } | |
262 | ||
263 | ||
264 | - initFromSkipXBM: (unsigned char *)bits width: (int)w height: (int)h | |
265 | flip: (BOOL)flip length: (int)length; | |
266 | { | |
267 | int bpr = (w + 7) / 8; | |
268 | unsigned char *planes[5]; | |
269 | ||
270 | [self initWithSize: NSMakeSize (w, h)]; | |
271 | ||
272 | bmRep = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes: NULL | |
273 | pixelsWide: w pixelsHigh: h | |
274 | bitsPerSample: 8 samplesPerPixel: 4 | |
275 | hasAlpha: YES isPlanar: YES | |
276 | colorSpaceName: NSCalibratedRGBColorSpace | |
277 | bytesPerRow: w bitsPerPixel: 0]; | |
278 | ||
279 | [bmRep getBitmapDataPlanes: planes]; | |
280 | { | |
281 | /* pull bits out to set the (bytewise) alpha mask */ | |
282 | int i, j, k; | |
283 | unsigned char *s = bits; | |
284 | unsigned char *alpha = planes[3]; | |
285 | unsigned char swt[16] = {0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, | |
286 | 3, 11, 7, 15}; | |
287 | unsigned char c, bitPat; | |
288 | ||
289 | for (j = 0; j < h; j++) | |
290 | for (i = 0; i < bpr; i++) | |
291 | { | |
292 | if (length) | |
293 | { | |
294 | unsigned char s1, s2; | |
295 | while (*s++ != 'x' && s < bits + length); | |
296 | if (s >= bits + length) | |
297 | { | |
298 | [bmRep release]; | |
299 | return nil; | |
300 | } | |
301 | #define hexchar(x) (isdigit (x) ? x - '0' : x - 'a' + 10) | |
302 | s1 = *s++; | |
303 | s2 = *s++; | |
304 | c = hexchar (s1) * 0x10 + hexchar (s2); | |
305 | } | |
306 | else | |
307 | c = *s++; | |
308 | ||
309 | bitPat = flip ? swt[c >> 4] | (swt[c & 0xf] << 4) : c ^ 255; | |
310 | for (k =0; k<8; k++) | |
311 | { | |
312 | *alpha++ = (bitPat & 0x80) ? 0xff : 0; | |
313 | bitPat <<= 1; | |
314 | } | |
315 | } | |
316 | } | |
317 | ||
318 | [self addRepresentation: bmRep]; | |
319 | ||
72af86bd AS |
320 | memset (planes[0], 0, w*h); |
321 | memset (planes[1], 0, w*h); | |
322 | memset (planes[2], 0, w*h); | |
edfda783 AR |
323 | [self setXBMColor: [NSColor blackColor]]; |
324 | return self; | |
325 | } | |
326 | ||
327 | ||
328 | /* Set color for a bitmap image (see initFromSkipXBM). Note that the alpha | |
329 | is used as a mask, so we just memset the entire array. */ | |
330 | - setXBMColor: (NSColor *)color | |
331 | { | |
332 | NSSize s = [self size]; | |
333 | int len = (int) s.width * s.height; | |
334 | unsigned char *planes[5]; | |
31e88bd8 | 335 | CGFloat r, g, b, a; |
edfda783 AR |
336 | NSColor *rgbColor; |
337 | ||
338 | if (bmRep == nil || color == nil) | |
339 | return; | |
340 | ||
341 | if ([color colorSpaceName] != NSCalibratedRGBColorSpace) | |
342 | rgbColor = [color colorUsingColorSpaceName: NSCalibratedRGBColorSpace]; | |
343 | else | |
344 | rgbColor = color; | |
345 | ||
346 | [rgbColor getRed: &r green: &g blue: &b alpha: &a]; | |
347 | ||
348 | [bmRep getBitmapDataPlanes: planes]; | |
349 | ||
350 | /* we used to just do this, but Cocoa seems to have a bug when rendering | |
351 | an alpha-masked image onto a dark background where it bloats the mask */ | |
352 | /* memset (planes[0..2], r, g, b*0xff, len); */ | |
353 | { | |
354 | int i, len = s.width*s.height; | |
355 | int rr = r * 0xff, gg = g * 0xff, bb = b * 0xff; | |
356 | for (i =0; i<len; i++) | |
357 | if (planes[3][i] != 0) | |
358 | { | |
359 | planes[0][i] = rr; | |
360 | planes[1][i] = gg; | |
361 | planes[2][i] = bb; | |
362 | } | |
363 | } | |
364 | } | |
365 | ||
366 | ||
367 | - initForXPMWithDepth: (int)depth width: (int)width height: (int)height | |
368 | { | |
369 | NSSize s = {width, height}; | |
370 | int i; | |
371 | ||
372 | [self initWithSize: s]; | |
373 | ||
374 | bmRep = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes: NULL | |
375 | pixelsWide: width pixelsHigh: height | |
376 | /* keep things simple for now */ | |
377 | bitsPerSample: 8 samplesPerPixel: 4 /*RGB+A*/ | |
378 | hasAlpha: YES isPlanar: YES | |
379 | colorSpaceName: NSCalibratedRGBColorSpace | |
380 | bytesPerRow: width bitsPerPixel: 0]; | |
381 | ||
382 | [bmRep getBitmapDataPlanes: pixmapData]; | |
383 | for (i =0; i<4; i++) | |
72af86bd | 384 | memset (pixmapData[i], 0, width*height); |
edfda783 AR |
385 | [self addRepresentation: bmRep]; |
386 | return self; | |
387 | } | |
388 | ||
389 | ||
390 | /* attempt to pull out pixmap data from a BitmapImageRep; returns NO if fails */ | |
391 | - (void) setPixmapData | |
392 | { | |
393 | NSEnumerator *reps; | |
394 | NSImageRep *rep; | |
395 | ||
396 | reps = [[self representations] objectEnumerator]; | |
397 | while (rep = (NSImageRep *) [reps nextObject]) | |
398 | { | |
399 | if ([rep respondsToSelector: @selector (getBitmapDataPlanes:)]) | |
400 | { | |
401 | bmRep = (NSBitmapImageRep *) rep; | |
402 | onTiger = [bmRep respondsToSelector: @selector (colorAtX:y:)]; | |
403 | ||
404 | if ([bmRep numberOfPlanes] >= 3) | |
405 | [bmRep getBitmapDataPlanes: pixmapData]; | |
e0d2e69a AR |
406 | |
407 | /* The next two lines cause the DPI of the image to be ignored. | |
408 | This seems to be the behavior users expect. */ | |
409 | [self setScalesWhenResized: YES]; | |
410 | [self setSize: NSMakeSize([bmRep pixelsWide], [bmRep pixelsHigh])]; | |
411 | ||
edfda783 AR |
412 | break; |
413 | } | |
414 | } | |
415 | } | |
416 | ||
417 | ||
418 | /* note; this and next work only for image created with initForXPMWithDepth, | |
419 | initFromSkipXBM, or where setPixmapData was called successfully */ | |
420 | /* return ARGB */ | |
421 | - (unsigned long) getPixelAtX: (int)x Y: (int)y | |
422 | { | |
423 | if (bmRep == nil) | |
424 | return 0; | |
425 | ||
426 | /* this method is faster but won't work for bitmaps */ | |
427 | if (pixmapData[0] != NULL) | |
428 | { | |
429 | int loc = x + y * [self size].width; | |
430 | return (pixmapData[3][loc] << 24) /* alpha */ | |
431 | | (pixmapData[0][loc] << 16) | (pixmapData[1][loc] << 8) | |
432 | | (pixmapData[2][loc]); | |
433 | } | |
434 | else if (onTiger) | |
435 | { | |
436 | NSColor *color = [bmRep colorAtX: x y: y]; | |
31e88bd8 | 437 | CGFloat r, g, b, a; |
edfda783 AR |
438 | [color getRed: &r green: &g blue: &b alpha: &a]; |
439 | return ((int)(a * 255.0) << 24) | |
440 | | ((int)(r * 255.0) << 16) | ((int)(g * 255.0) << 8) | |
441 | | ((int)(b * 255.0)); | |
442 | ||
443 | } | |
444 | return 0; | |
445 | } | |
446 | ||
447 | - (void) setPixelAtX: (int)x Y: (int)y toRed: (unsigned char)r | |
448 | green: (unsigned char)g blue: (unsigned char)b | |
449 | alpha:(unsigned char)a; | |
450 | { | |
451 | if (bmRep == nil) | |
452 | return; | |
453 | ||
454 | if (pixmapData[0] != NULL) | |
455 | { | |
456 | int loc = x + y * [self size].width; | |
457 | pixmapData[0][loc] = r; | |
458 | pixmapData[1][loc] = g; | |
459 | pixmapData[2][loc] = b; | |
460 | pixmapData[3][loc] = a; | |
461 | } | |
462 | else if (onTiger) | |
463 | { | |
464 | [bmRep setColor: | |
d3810c21 AR |
465 | [NSColor colorWithCalibratedRed: (r/255.0) green: (g/255.0) |
466 | blue: (b/255.0) alpha: (a/255.0)] | |
edfda783 AR |
467 | atX: x y: y]; |
468 | } | |
469 | } | |
470 | ||
471 | - (void) setAlphaAtX: (int) x Y: (int) y to: (unsigned char) a | |
472 | { | |
473 | if (bmRep == nil) | |
474 | return; | |
475 | ||
476 | if (pixmapData[0] != NULL) | |
477 | { | |
478 | int loc = x + y * [self size].width; | |
479 | ||
480 | pixmapData[3][loc] = a; | |
481 | } | |
482 | else if (onTiger) | |
483 | { | |
484 | NSColor *color = [bmRep colorAtX: x y: y]; | |
485 | color = [color colorWithAlphaComponent: (a / 255.0)]; | |
486 | [bmRep setColor: color atX: x y: y]; | |
487 | } | |
488 | } | |
489 | ||
490 | /* returns a pattern color, which is cached here */ | |
491 | - (NSColor *)stippleMask | |
492 | { | |
493 | if (stippleMask == nil) | |
494 | stippleMask = [[NSColor colorWithPatternImage: self] retain]; | |
495 | return stippleMask; | |
496 | } | |
497 | ||
498 | @end | |
0ae1e5e5 | 499 | |
2f8e74bb | 500 | // arch-tag: 6b310280-6892-4e5e-8f34-41c4d384874f |