1 /*
2 Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
3
4 This software is provided 'as-is', without any express or implied
5 warranty. In no event will the authors be held liable for any damages
6 arising from the use of this software.
7
8 Permission is granted to anyone to use this software for any purpose,
9 including commercial applications, and to alter it and redistribute it
10 freely.
11 */
12 /* A simple program to test the Input Method support in the SDL library (2.0+)
13 If you build without SDL_ttf, you can use the GNU Unifont hex file instead.
14 Download at http://unifoundry.com/unifont.html */
15
16 #include <stdlib.h>
17 #include <stdio.h>
18 #include <string.h>
19
20 #include "SDL.h"
21 #ifdef HAVE_SDL_TTF
22 #include "SDL_ttf.h"
23 #endif
24
25 #include "SDL_test_common.h"
26
27 #define DEFAULT_PTSIZE 30
28 #ifdef HAVE_SDL_TTF
29 #ifdef __MACOSX__
30 #define DEFAULT_FONT "/System/Library/Fonts/华文细黑.ttf"
31 #elif __WIN32__
32 /* Some japanese font present on at least Windows 8.1. */
33 #define DEFAULT_FONT "C:\\Windows\\Fonts\\yugothic.ttf"
34 #else
35 #define DEFAULT_FONT "NoDefaultFont.ttf"
36 #endif
37 #else
38 #define DEFAULT_FONT "unifont-9.0.02.hex"
39 #endif
40 #define MAX_TEXT_LENGTH 256
41
42 static SDLTest_CommonState *state;
43 static SDL_Rect textRect, markedRect;
44 static SDL_Color lineColor = {0,0,0,255};
45 static SDL_Color backColor = {255,255,255,255};
46 static SDL_Color textColor = {0,0,0,255};
47 static char text[MAX_TEXT_LENGTH], markedText[SDL_TEXTEDITINGEVENT_TEXT_SIZE];
48 static int cursor = 0;
49 #ifdef HAVE_SDL_TTF
50 static TTF_Font *font;
51 #else
52 #define UNIFONT_MAX_CODEPOINT 0x1ffff
53 #define UNIFONT_NUM_GLYPHS 0x20000
54 /* Using 512x512 textures that are supported everywhere. */
55 #define UNIFONT_TEXTURE_WIDTH 512
56 #define UNIFONT_GLYPHS_IN_ROW (UNIFONT_TEXTURE_WIDTH / 16)
57 #define UNIFONT_GLYPHS_IN_TEXTURE (UNIFONT_GLYPHS_IN_ROW * UNIFONT_GLYPHS_IN_ROW)
58 #define UNIFONT_NUM_TEXTURES ((UNIFONT_NUM_GLYPHS + UNIFONT_GLYPHS_IN_TEXTURE - 1) / UNIFONT_GLYPHS_IN_TEXTURE)
59 #define UNIFONT_TEXTURE_SIZE (UNIFONT_TEXTURE_WIDTH * UNIFONT_TEXTURE_WIDTH * 4)
60 #define UNIFONT_TEXTURE_PITCH (UNIFONT_TEXTURE_WIDTH * 4)
61 #define UNIFONT_DRAW_SCALE 2
62 struct UnifontGlyph {
63 Uint8 width;
64 Uint8 data[32];
65 } *unifontGlyph;
66 static SDL_Texture **unifontTexture;
67 static Uint8 unifontTextureLoaded[UNIFONT_NUM_TEXTURES] = {0};
68
69 /* Unifont loading code start */
70
dehex(char c)71 static Uint8 dehex(char c)
72 {
73 if (c >= '0' && c <= '9')
74 return c - '0';
75 else if (c >= 'a' && c <= 'f')
76 return c - 'a' + 10;
77 else if (c >= 'A' && c <= 'F')
78 return c - 'A' + 10;
79 return 255;
80 }
81
dehex2(char c1,char c2)82 static Uint8 dehex2(char c1, char c2)
83 {
84 return (dehex(c1) << 4) | dehex(c2);
85 }
86
validate_hex(const char * cp,size_t len,Uint32 * np)87 static Uint8 validate_hex(const char *cp, size_t len, Uint32 *np)
88 {
89 Uint32 n = 0;
90 for (; len > 0; cp++, len--)
91 {
92 Uint8 c = dehex(*cp);
93 if (c == 255)
94 return 0;
95 n = (n << 4) | c;
96 }
97 if (np != NULL)
98 *np = n;
99 return 1;
100 }
101
unifont_init(const char * fontname)102 static void unifont_init(const char *fontname)
103 {
104 Uint8 hexBuffer[65];
105 Uint32 numGlyphs = 0;
106 int lineNumber = 1;
107 size_t bytesRead;
108 SDL_RWops *hexFile;
109 const size_t unifontGlyphSize = UNIFONT_NUM_GLYPHS * sizeof(struct UnifontGlyph);
110 const size_t unifontTextureSize = UNIFONT_NUM_TEXTURES * state->num_windows * sizeof(void *);
111
112 /* Allocate memory for the glyph data so the file can be closed after initialization. */
113 unifontGlyph = (struct UnifontGlyph *)SDL_malloc(unifontGlyphSize);
114 if (unifontGlyph == NULL)
115 {
116 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Failed to allocate %d KiB for glyph data.\n", (int)(unifontGlyphSize + 1023) / 1024);
117 exit(-1);
118 }
119 SDL_memset(unifontGlyph, 0, unifontGlyphSize);
120
121 /* Allocate memory for texture pointers for all renderers. */
122 unifontTexture = (SDL_Texture **)SDL_malloc(unifontTextureSize);
123 if (unifontTexture == NULL)
124 {
125 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Failed to allocate %d KiB for texture pointer data.\n", (int)(unifontTextureSize + 1023) / 1024);
126 exit(-1);
127 }
128 SDL_memset(unifontTexture, 0, unifontTextureSize);
129
130 hexFile = SDL_RWFromFile(fontname, "rb");
131 if (hexFile == NULL)
132 {
133 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Failed to open font file: %s\n", fontname);
134 exit(-1);
135 }
136
137 /* Read all the glyph data into memory to make it accessible later when textures are created. */
138 do {
139 int i, codepointHexSize;
140 size_t bytesOverread;
141 Uint8 glyphWidth;
142 Uint32 codepoint;
143
144 bytesRead = SDL_RWread(hexFile, hexBuffer, 1, 9);
145 if (numGlyphs > 0 && bytesRead == 0)
146 break; /* EOF */
147 if ((numGlyphs == 0 && bytesRead == 0) || (numGlyphs > 0 && bytesRead < 9))
148 {
149 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unfiont: Unexpected end of hex file.\n");
150 exit(-1);
151 }
152
153 /* Looking for the colon that separates the codepoint and glyph data at position 2, 4, 6 and 8. */
154 if (hexBuffer[2] == ':')
155 codepointHexSize = 2;
156 else if (hexBuffer[4] == ':')
157 codepointHexSize = 4;
158 else if (hexBuffer[6] == ':')
159 codepointHexSize = 6;
160 else if (hexBuffer[8] == ':')
161 codepointHexSize = 8;
162 else
163 {
164 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Could not find codepoint and glyph data separator symbol in hex file on line %d.\n", lineNumber);
165 exit(-1);
166 }
167
168 if (!validate_hex((const char *)hexBuffer, codepointHexSize, &codepoint))
169 {
170 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Malformed hexadecimal number in hex file on line %d.\n", lineNumber);
171 exit(-1);
172 }
173 if (codepoint > UNIFONT_MAX_CODEPOINT)
174 SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION, "unifont: Codepoint on line %d exceeded limit of 0x%x.\n", lineNumber, UNIFONT_MAX_CODEPOINT);
175
176 /* If there was glyph data read in the last file read, move it to the front of the buffer. */
177 bytesOverread = 8 - codepointHexSize;
178 if (codepointHexSize < 8)
179 SDL_memmove(hexBuffer, hexBuffer + codepointHexSize + 1, bytesOverread);
180 bytesRead = SDL_RWread(hexFile, hexBuffer + bytesOverread, 1, 33 - bytesOverread);
181 if (bytesRead < (33 - bytesOverread))
182 {
183 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Unexpected end of hex file.\n");
184 exit(-1);
185 }
186 if (hexBuffer[32] == '\n')
187 glyphWidth = 8;
188 else
189 {
190 glyphWidth = 16;
191 bytesRead = SDL_RWread(hexFile, hexBuffer + 33, 1, 32);
192 if (bytesRead < 32)
193 {
194 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Unexpected end of hex file.\n");
195 exit(-1);
196 }
197 }
198
199 if (!validate_hex((const char *)hexBuffer, glyphWidth * 4, NULL))
200 {
201 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Malformed hexadecimal glyph data in hex file on line %d.\n", lineNumber);
202 exit(-1);
203 }
204
205 if (codepoint <= UNIFONT_MAX_CODEPOINT)
206 {
207 if (unifontGlyph[codepoint].width > 0)
208 SDL_LogWarn(SDL_LOG_CATEGORY_APPLICATION, "unifont: Ignoring duplicate codepoint 0x%08x in hex file on line %d.\n", codepoint, lineNumber);
209 else
210 {
211 unifontGlyph[codepoint].width = glyphWidth;
212 /* Pack the hex data into a more compact form. */
213 for (i = 0; i < glyphWidth * 2; i++)
214 unifontGlyph[codepoint].data[i] = dehex2(hexBuffer[i * 2], hexBuffer[i * 2 + 1]);
215 numGlyphs++;
216 }
217 }
218
219 lineNumber++;
220 } while (bytesRead > 0);
221
222 SDL_RWclose(hexFile);
223 SDL_Log("unifont: Loaded %u glyphs.\n", numGlyphs);
224 }
225
unifont_make_rgba(Uint8 * src,Uint8 * dst,Uint8 width)226 static void unifont_make_rgba(Uint8 *src, Uint8 *dst, Uint8 width)
227 {
228 int i, j;
229 Uint8 *row = dst;
230
231 for (i = 0; i < width * 2; i++)
232 {
233 Uint8 data = src[i];
234 for (j = 0; j < 8; j++)
235 {
236 if (data & 0x80)
237 {
238 row[0] = textColor.r;
239 row[1] = textColor.g;
240 row[2] = textColor.b;
241 row[3] = textColor.a;
242 }
243 else
244 {
245 row[0] = 0;
246 row[1] = 0;
247 row[2] = 0;
248 row[3] = 0;
249 }
250 data <<= 1;
251 row += 4;
252 }
253
254 if (width == 8 || (width == 16 && i % 2 == 1))
255 {
256 dst += UNIFONT_TEXTURE_PITCH;
257 row = dst;
258 }
259 }
260 }
261
unifont_load_texture(Uint32 textureID)262 static void unifont_load_texture(Uint32 textureID)
263 {
264 int i;
265 Uint8 * textureRGBA;
266
267 if (textureID >= UNIFONT_NUM_TEXTURES)
268 {
269 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Tried to load out of range texture %u.\n", textureID);
270 exit(-1);
271 }
272
273 textureRGBA = (Uint8 *)SDL_malloc(UNIFONT_TEXTURE_SIZE);
274 if (textureRGBA == NULL)
275 {
276 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Failed to allocate %d MiB for a texture.\n", UNIFONT_TEXTURE_SIZE / 1024 / 1024);
277 exit(-1);
278 }
279 SDL_memset(textureRGBA, 0, UNIFONT_TEXTURE_SIZE);
280
281 /* Copy the glyphs into memory in RGBA format. */
282 for (i = 0; i < UNIFONT_GLYPHS_IN_TEXTURE; i++)
283 {
284 Uint32 codepoint = UNIFONT_GLYPHS_IN_TEXTURE * textureID + i;
285 if (unifontGlyph[codepoint].width > 0)
286 {
287 const Uint32 cInTex = codepoint % UNIFONT_GLYPHS_IN_TEXTURE;
288 const size_t offset = (cInTex / UNIFONT_GLYPHS_IN_ROW) * UNIFONT_TEXTURE_PITCH * 16 + (cInTex % UNIFONT_GLYPHS_IN_ROW) * 16 * 4;
289 unifont_make_rgba(unifontGlyph[codepoint].data, textureRGBA + offset, unifontGlyph[codepoint].width);
290 }
291 }
292
293 /* Create textures and upload the RGBA data from above. */
294 for (i = 0; i < state->num_windows; ++i)
295 {
296 SDL_Renderer *renderer = state->renderers[i];
297 SDL_Texture *tex = unifontTexture[UNIFONT_NUM_TEXTURES * i + textureID];
298 if (state->windows[i] == NULL || renderer == NULL || tex != NULL)
299 continue;
300 tex = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STATIC, UNIFONT_TEXTURE_WIDTH, UNIFONT_TEXTURE_WIDTH);
301 if (tex == NULL)
302 {
303 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Failed to create texture %u for renderer %d.\n", textureID, i);
304 exit(-1);
305 }
306 unifontTexture[UNIFONT_NUM_TEXTURES * i + textureID] = tex;
307 SDL_SetTextureBlendMode(tex, SDL_BLENDMODE_BLEND);
308 if (SDL_UpdateTexture(tex, NULL, textureRGBA, UNIFONT_TEXTURE_PITCH) != 0)
309 {
310 SDL_Log("unifont error: Failed to update texture %u data for renderer %d.\n", textureID, i);
311 }
312 }
313
314 SDL_free(textureRGBA);
315 unifontTextureLoaded[textureID] = 1;
316 }
317
unifont_draw_glyph(Uint32 codepoint,int rendererID,SDL_Rect * dstrect)318 static Sint32 unifont_draw_glyph(Uint32 codepoint, int rendererID, SDL_Rect *dstrect)
319 {
320 SDL_Texture *texture;
321 const Uint32 textureID = codepoint / UNIFONT_GLYPHS_IN_TEXTURE;
322 SDL_Rect srcrect;
323 srcrect.w = srcrect.h = 16;
324 if (codepoint > UNIFONT_MAX_CODEPOINT)
325 return 0;
326 if (!unifontTextureLoaded[textureID])
327 unifont_load_texture(textureID);
328 texture = unifontTexture[UNIFONT_NUM_TEXTURES * rendererID + textureID];
329 if (texture != NULL)
330 {
331 const Uint32 cInTex = codepoint % UNIFONT_GLYPHS_IN_TEXTURE;
332 srcrect.x = cInTex % UNIFONT_GLYPHS_IN_ROW * 16;
333 srcrect.y = cInTex / UNIFONT_GLYPHS_IN_ROW * 16;
334 SDL_RenderCopy(state->renderers[rendererID], texture, &srcrect, dstrect);
335 }
336 return unifontGlyph[codepoint].width;
337 }
338
unifont_cleanup()339 static void unifont_cleanup()
340 {
341 int i, j;
342 for (i = 0; i < state->num_windows; ++i)
343 {
344 SDL_Renderer *renderer = state->renderers[i];
345 if (state->windows[i] == NULL || renderer == NULL)
346 continue;
347 for (j = 0; j < UNIFONT_NUM_TEXTURES; j++)
348 {
349 SDL_Texture *tex = unifontTexture[UNIFONT_NUM_TEXTURES * i + j];
350 if (tex != NULL)
351 SDL_DestroyTexture(tex);
352 }
353 }
354
355 for (j = 0; j < UNIFONT_NUM_TEXTURES; j++)
356 unifontTextureLoaded[j] = 0;
357
358 SDL_free(unifontTexture);
359 SDL_free(unifontGlyph);
360 }
361
362 /* Unifont code end */
363 #endif
364
utf8_length(unsigned char c)365 size_t utf8_length(unsigned char c)
366 {
367 c = (unsigned char)(0xff & c);
368 if (c < 0x80)
369 return 1;
370 else if ((c >> 5) ==0x6)
371 return 2;
372 else if ((c >> 4) == 0xe)
373 return 3;
374 else if ((c >> 3) == 0x1e)
375 return 4;
376 else
377 return 0;
378 }
379
utf8_next(char * p)380 char *utf8_next(char *p)
381 {
382 size_t len = utf8_length(*p);
383 size_t i = 0;
384 if (!len)
385 return 0;
386
387 for (; i < len; ++i)
388 {
389 ++p;
390 if (!*p)
391 return 0;
392 }
393 return p;
394 }
395
utf8_advance(char * p,size_t distance)396 char *utf8_advance(char *p, size_t distance)
397 {
398 size_t i = 0;
399 for (; i < distance && p; ++i)
400 {
401 p = utf8_next(p);
402 }
403 return p;
404 }
405
utf8_decode(char * p,size_t len)406 Uint32 utf8_decode(char *p, size_t len)
407 {
408 Uint32 codepoint = 0;
409 size_t i = 0;
410 if (!len)
411 return 0;
412
413 for (; i < len; ++i)
414 {
415 if (i == 0)
416 codepoint = (0xff >> len) & *p;
417 else
418 {
419 codepoint <<= 6;
420 codepoint |= 0x3f & *p;
421 }
422 if (!*p)
423 return 0;
424 p++;
425 }
426
427 return codepoint;
428 }
429
usage()430 void usage()
431 {
432 SDL_Log("usage: testime [--font fontfile]\n");
433 exit(0);
434 }
435
InitInput()436 void InitInput()
437 {
438
439 /* Prepare a rect for text input */
440 textRect.x = textRect.y = 100;
441 textRect.w = DEFAULT_WINDOW_WIDTH - 2 * textRect.x;
442 textRect.h = 50;
443
444 text[0] = 0;
445 markedRect = textRect;
446 markedText[0] = 0;
447
448 SDL_StartTextInput();
449 }
450
CleanupVideo()451 void CleanupVideo()
452 {
453 SDL_StopTextInput();
454 #ifdef HAVE_SDL_TTF
455 TTF_CloseFont(font);
456 TTF_Quit();
457 #else
458 unifont_cleanup();
459 #endif
460 }
461
_Redraw(int rendererID)462 void _Redraw(int rendererID) {
463 SDL_Renderer * renderer = state->renderers[rendererID];
464 SDL_Rect drawnTextRect, cursorRect, underlineRect;
465 drawnTextRect = textRect;
466 drawnTextRect.w = 0;
467
468 SDL_SetRenderDrawColor(renderer, backColor.r, backColor.g, backColor.b, backColor.a);
469 SDL_RenderFillRect(renderer,&textRect);
470
471 if (*text)
472 {
473 #ifdef HAVE_SDL_TTF
474 SDL_Surface *textSur = TTF_RenderUTF8_Blended(font, text, textColor);
475 SDL_Texture *texture;
476
477 /* Vertically center text */
478 drawnTextRect.y = textRect.y + (textRect.h - textSur->h) / 2;
479 drawnTextRect.w = textSur->w;
480 drawnTextRect.h = textSur->h;
481
482 texture = SDL_CreateTextureFromSurface(renderer,textSur);
483 SDL_FreeSurface(textSur);
484
485 SDL_RenderCopy(renderer,texture,NULL,&drawnTextRect);
486 SDL_DestroyTexture(texture);
487 #else
488 char *utext = text;
489 Uint32 codepoint;
490 size_t len;
491 SDL_Rect dstrect;
492
493 dstrect.x = textRect.x;
494 dstrect.y = textRect.y + (textRect.h - 16 * UNIFONT_DRAW_SCALE) / 2;
495 dstrect.w = 16 * UNIFONT_DRAW_SCALE;
496 dstrect.h = 16 * UNIFONT_DRAW_SCALE;
497 drawnTextRect.y = dstrect.y;
498 drawnTextRect.h = dstrect.h;
499
500 while ((codepoint = utf8_decode(utext, len = utf8_length(*utext))))
501 {
502 Sint32 advance = unifont_draw_glyph(codepoint, rendererID, &dstrect) * UNIFONT_DRAW_SCALE;
503 dstrect.x += advance;
504 drawnTextRect.w += advance;
505 utext += len;
506 }
507 #endif
508 }
509
510 markedRect.x = textRect.x + drawnTextRect.w;
511 markedRect.w = textRect.w - drawnTextRect.w;
512 if (markedRect.w < 0)
513 {
514 /* Stop text input because we cannot hold any more characters */
515 SDL_StopTextInput();
516 return;
517 }
518 else
519 {
520 SDL_StartTextInput();
521 }
522
523 cursorRect = drawnTextRect;
524 cursorRect.x += cursorRect.w;
525 cursorRect.w = 2;
526 cursorRect.h = drawnTextRect.h;
527
528 drawnTextRect.x += drawnTextRect.w;
529 drawnTextRect.w = 0;
530
531 SDL_SetRenderDrawColor(renderer, backColor.r, backColor.g, backColor.b, backColor.a);
532 SDL_RenderFillRect(renderer,&markedRect);
533
534 if (markedText[0])
535 {
536 #ifdef HAVE_SDL_TTF
537 SDL_Surface *textSur;
538 SDL_Texture *texture;
539 if (cursor)
540 {
541 char *p = utf8_advance(markedText, cursor);
542 char c = 0;
543 if (!p)
544 p = &markedText[SDL_strlen(markedText)];
545
546 c = *p;
547 *p = 0;
548 TTF_SizeUTF8(font, markedText, &drawnTextRect.w, NULL);
549 cursorRect.x += drawnTextRect.w;
550 *p = c;
551 }
552 textSur = TTF_RenderUTF8_Blended(font, markedText, textColor);
553 /* Vertically center text */
554 drawnTextRect.y = textRect.y + (textRect.h - textSur->h) / 2;
555 drawnTextRect.w = textSur->w;
556 drawnTextRect.h = textSur->h;
557
558 texture = SDL_CreateTextureFromSurface(renderer,textSur);
559 SDL_FreeSurface(textSur);
560
561 SDL_RenderCopy(renderer,texture,NULL,&drawnTextRect);
562 SDL_DestroyTexture(texture);
563 #else
564 int i = 0;
565 char *utext = markedText;
566 Uint32 codepoint;
567 size_t len;
568 SDL_Rect dstrect;
569
570 dstrect.x = drawnTextRect.x;
571 dstrect.y = textRect.y + (textRect.h - 16 * UNIFONT_DRAW_SCALE) / 2;
572 dstrect.w = 16 * UNIFONT_DRAW_SCALE;
573 dstrect.h = 16 * UNIFONT_DRAW_SCALE;
574 drawnTextRect.y = dstrect.y;
575 drawnTextRect.h = dstrect.h;
576
577 while ((codepoint = utf8_decode(utext, len = utf8_length(*utext))))
578 {
579 Sint32 advance = unifont_draw_glyph(codepoint, rendererID, &dstrect) * UNIFONT_DRAW_SCALE;
580 dstrect.x += advance;
581 drawnTextRect.w += advance;
582 if (i < cursor)
583 cursorRect.x += advance;
584 i++;
585 utext += len;
586 }
587 #endif
588
589 if (cursor > 0)
590 {
591 cursorRect.y = drawnTextRect.y;
592 cursorRect.h = drawnTextRect.h;
593 }
594
595 underlineRect = markedRect;
596 underlineRect.y = drawnTextRect.y + drawnTextRect.h - 2;
597 underlineRect.h = 2;
598 underlineRect.w = drawnTextRect.w;
599
600 SDL_SetRenderDrawColor(renderer, lineColor.r, lineColor.g, lineColor.b, lineColor.a);
601 SDL_RenderFillRect(renderer, &underlineRect);
602 }
603
604 SDL_SetRenderDrawColor(renderer, lineColor.r, lineColor.g, lineColor.b, lineColor.a);
605 SDL_RenderFillRect(renderer,&cursorRect);
606
607 SDL_SetTextInputRect(&markedRect);
608 }
609
Redraw()610 void Redraw() {
611 int i;
612 for (i = 0; i < state->num_windows; ++i) {
613 SDL_Renderer *renderer = state->renderers[i];
614 if (state->windows[i] == NULL)
615 continue;
616 SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0);
617 SDL_RenderClear(renderer);
618
619 /* Sending in the window id to let the font renderers know which one we're working with. */
620 _Redraw(i);
621
622 SDL_RenderPresent(renderer);
623 }
624 }
625
main(int argc,char * argv[])626 int main(int argc, char *argv[]) {
627 int i, done;
628 SDL_Event event;
629 const char *fontname = DEFAULT_FONT;
630
631 /* Enable standard application logging */
632 SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
633
634 /* Initialize test framework */
635 state = SDLTest_CommonCreateState(argv, SDL_INIT_VIDEO);
636 if (!state) {
637 return 1;
638 }
639 for (i = 1; i < argc;i++) {
640 SDLTest_CommonArg(state, i);
641 }
642 for (argc--, argv++; argc > 0; argc--, argv++)
643 {
644 if (strcmp(argv[0], "--help") == 0) {
645 usage();
646 return 0;
647 }
648
649 else if (strcmp(argv[0], "--font") == 0)
650 {
651 argc--;
652 argv++;
653
654 if (argc > 0)
655 fontname = argv[0];
656 else {
657 usage();
658 return 0;
659 }
660 }
661 }
662
663 if (!SDLTest_CommonInit(state)) {
664 return 2;
665 }
666
667
668 #ifdef HAVE_SDL_TTF
669 /* Initialize fonts */
670 TTF_Init();
671
672 font = TTF_OpenFont(fontname, DEFAULT_PTSIZE);
673 if (! font)
674 {
675 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to find font: %s\n", TTF_GetError());
676 exit(-1);
677 }
678 #else
679 unifont_init(fontname);
680 #endif
681
682 SDL_Log("Using font: %s\n", fontname);
683 atexit(SDL_Quit);
684
685 InitInput();
686 /* Create the windows and initialize the renderers */
687 for (i = 0; i < state->num_windows; ++i) {
688 SDL_Renderer *renderer = state->renderers[i];
689 SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_NONE);
690 SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
691 SDL_RenderClear(renderer);
692 }
693 Redraw();
694 /* Main render loop */
695 done = 0;
696 while (!done) {
697 /* Check for events */
698 while (SDL_PollEvent(&event)) {
699 SDLTest_CommonEvent(state, &event, &done);
700 switch(event.type) {
701 case SDL_KEYDOWN: {
702 switch (event.key.keysym.sym)
703 {
704 case SDLK_RETURN:
705 text[0]=0x00;
706 Redraw();
707 break;
708 case SDLK_BACKSPACE:
709 /* Only delete text if not in editing mode. */
710 if (!markedText[0])
711 {
712 size_t textlen = SDL_strlen(text);
713
714 do {
715 if (textlen==0)
716 {
717 break;
718 }
719 if ((text[textlen-1] & 0x80) == 0x00)
720 {
721 /* One byte */
722 text[textlen-1]=0x00;
723 break;
724 }
725 if ((text[textlen-1] & 0xC0) == 0x80)
726 {
727 /* Byte from the multibyte sequence */
728 text[textlen-1]=0x00;
729 textlen--;
730 }
731 if ((text[textlen-1] & 0xC0) == 0xC0)
732 {
733 /* First byte of multibyte sequence */
734 text[textlen-1]=0x00;
735 break;
736 }
737 } while(1);
738
739 Redraw();
740 }
741 break;
742 }
743
744 if (done)
745 {
746 break;
747 }
748
749 SDL_Log("Keyboard: scancode 0x%08X = %s, keycode 0x%08X = %s\n",
750 event.key.keysym.scancode,
751 SDL_GetScancodeName(event.key.keysym.scancode),
752 event.key.keysym.sym, SDL_GetKeyName(event.key.keysym.sym));
753 break;
754
755 case SDL_TEXTINPUT:
756 if (event.text.text[0] == '\0' || event.text.text[0] == '\n' ||
757 markedRect.w < 0)
758 break;
759
760 SDL_Log("Keyboard: text input \"%s\"\n", event.text.text);
761
762 if (SDL_strlen(text) + SDL_strlen(event.text.text) < sizeof(text))
763 SDL_strlcat(text, event.text.text, sizeof(text));
764
765 SDL_Log("text inputed: %s\n", text);
766
767 /* After text inputed, we can clear up markedText because it */
768 /* is committed */
769 markedText[0] = 0;
770 Redraw();
771 break;
772
773 case SDL_TEXTEDITING:
774 SDL_Log("text editing \"%s\", selected range (%d, %d)\n",
775 event.edit.text, event.edit.start, event.edit.length);
776
777 SDL_strlcpy(markedText, event.edit.text, SDL_TEXTEDITINGEVENT_TEXT_SIZE);
778 cursor = event.edit.start;
779 Redraw();
780 break;
781 }
782 break;
783
784 }
785 }
786 }
787 CleanupVideo();
788 SDLTest_CommonQuit(state);
789 return 0;
790 }
791
792
793 /* vi: set ts=4 sw=4 expandtab: */
794