1/*
2 Copyright (C) 1997-2021 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
42static SDLTest_CommonState *state;
43static SDL_Rect textRect, markedRect;
44static SDL_Color lineColor = {0,0,0,255};
45static SDL_Color backColor = {255,255,255,255};
46static SDL_Color textColor = {0,0,0,255};
47static char text[MAX_TEXT_LENGTH], markedText[SDL_TEXTEDITINGEVENT_TEXT_SIZE];
48static int cursor = 0;
49#ifdef HAVE_SDL_TTF
50static 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
62struct UnifontGlyph {
63 Uint8 width;
64 Uint8 data[32];
65} *unifontGlyph;
66static SDL_Texture **unifontTexture;
67static Uint8 unifontTextureLoaded[UNIFONT_NUM_TEXTURES] = {0};
68
69/* Unifont loading code start */
70
71static 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
82static Uint8 dehex2(char c1, char c2)
83{
84 return (dehex(c1) << 4) | dehex(c2);
85}
86
87static 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
102static int 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 return -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 return -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 return -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, "unifont: Unexpected end of hex file.\n");
150 return -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 return -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 return -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 return -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 return -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 return -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 return 0;
225}
226
227static void unifont_make_rgba(Uint8 *src, Uint8 *dst, Uint8 width)
228{
229 int i, j;
230 Uint8 *row = dst;
231
232 for (i = 0; i < width * 2; i++)
233 {
234 Uint8 data = src[i];
235 for (j = 0; j < 8; j++)
236 {
237 if (data & 0x80)
238 {
239 row[0] = textColor.r;
240 row[1] = textColor.g;
241 row[2] = textColor.b;
242 row[3] = textColor.a;
243 }
244 else
245 {
246 row[0] = 0;
247 row[1] = 0;
248 row[2] = 0;
249 row[3] = 0;
250 }
251 data <<= 1;
252 row += 4;
253 }
254
255 if (width == 8 || (width == 16 && i % 2 == 1))
256 {
257 dst += UNIFONT_TEXTURE_PITCH;
258 row = dst;
259 }
260 }
261}
262
263static int unifont_load_texture(Uint32 textureID)
264{
265 int i;
266 Uint8 * textureRGBA;
267
268 if (textureID >= UNIFONT_NUM_TEXTURES)
269 {
270 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Tried to load out of range texture %u.\n", textureID);
271 return -1;
272 }
273
274 textureRGBA = (Uint8 *)SDL_malloc(UNIFONT_TEXTURE_SIZE);
275 if (textureRGBA == NULL)
276 {
277 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Failed to allocate %d MiB for a texture.\n", UNIFONT_TEXTURE_SIZE / 1024 / 1024);
278 return -1;
279 }
280 SDL_memset(textureRGBA, 0, UNIFONT_TEXTURE_SIZE);
281
282 /* Copy the glyphs into memory in RGBA format. */
283 for (i = 0; i < UNIFONT_GLYPHS_IN_TEXTURE; i++)
284 {
285 Uint32 codepoint = UNIFONT_GLYPHS_IN_TEXTURE * textureID + i;
286 if (unifontGlyph[codepoint].width > 0)
287 {
288 const Uint32 cInTex = codepoint % UNIFONT_GLYPHS_IN_TEXTURE;
289 const size_t offset = (cInTex / UNIFONT_GLYPHS_IN_ROW) * UNIFONT_TEXTURE_PITCH * 16 + (cInTex % UNIFONT_GLYPHS_IN_ROW) * 16 * 4;
290 unifont_make_rgba(unifontGlyph[codepoint].data, textureRGBA + offset, unifontGlyph[codepoint].width);
291 }
292 }
293
294 /* Create textures and upload the RGBA data from above. */
295 for (i = 0; i < state->num_windows; ++i)
296 {
297 SDL_Renderer *renderer = state->renderers[i];
298 SDL_Texture *tex = unifontTexture[UNIFONT_NUM_TEXTURES * i + textureID];
299 if (state->windows[i] == NULL || renderer == NULL || tex != NULL)
300 continue;
301 tex = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_ARGB8888, SDL_TEXTUREACCESS_STATIC, UNIFONT_TEXTURE_WIDTH, UNIFONT_TEXTURE_WIDTH);
302 if (tex == NULL)
303 {
304 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "unifont: Failed to create texture %u for renderer %d.\n", textureID, i);
305 return -1;
306 }
307 unifontTexture[UNIFONT_NUM_TEXTURES * i + textureID] = tex;
308 SDL_SetTextureBlendMode(tex, SDL_BLENDMODE_BLEND);
309 if (SDL_UpdateTexture(tex, NULL, textureRGBA, UNIFONT_TEXTURE_PITCH) != 0)
310 {
311 SDL_Log("unifont error: Failed to update texture %u data for renderer %d.\n", textureID, i);
312 }
313 }
314
315 SDL_free(textureRGBA);
316 unifontTextureLoaded[textureID] = 1;
317 return 0;
318}
319
320static Sint32 unifont_draw_glyph(Uint32 codepoint, int rendererID, SDL_Rect *dstrect)
321{
322 SDL_Texture *texture;
323 const Uint32 textureID = codepoint / UNIFONT_GLYPHS_IN_TEXTURE;
324 SDL_Rect srcrect;
325 srcrect.w = srcrect.h = 16;
326 if (codepoint > UNIFONT_MAX_CODEPOINT) {
327 return 0;
328 }
329 if (!unifontTextureLoaded[textureID]) {
330 if (unifont_load_texture(textureID) < 0) {
331 return 0;
332 }
333 }
334 texture = unifontTexture[UNIFONT_NUM_TEXTURES * rendererID + textureID];
335 if (texture != NULL)
336 {
337 const Uint32 cInTex = codepoint % UNIFONT_GLYPHS_IN_TEXTURE;
338 srcrect.x = cInTex % UNIFONT_GLYPHS_IN_ROW * 16;
339 srcrect.y = cInTex / UNIFONT_GLYPHS_IN_ROW * 16;
340 SDL_RenderCopy(state->renderers[rendererID], texture, &srcrect, dstrect);
341 }
342 return unifontGlyph[codepoint].width;
343}
344
345static void unifont_cleanup()
346{
347 int i, j;
348 for (i = 0; i < state->num_windows; ++i)
349 {
350 SDL_Renderer *renderer = state->renderers[i];
351 if (state->windows[i] == NULL || renderer == NULL)
352 continue;
353 for (j = 0; j < UNIFONT_NUM_TEXTURES; j++)
354 {
355 SDL_Texture *tex = unifontTexture[UNIFONT_NUM_TEXTURES * i + j];
356 if (tex != NULL)
357 SDL_DestroyTexture(tex);
358 }
359 }
360
361 for (j = 0; j < UNIFONT_NUM_TEXTURES; j++)
362 unifontTextureLoaded[j] = 0;
363
364 SDL_free(unifontTexture);
365 SDL_free(unifontGlyph);
366}
367
368/* Unifont code end */
369#endif
370
371size_t utf8_length(unsigned char c)
372{
373 c = (unsigned char)(0xff & c);
374 if (c < 0x80)
375 return 1;
376 else if ((c >> 5) ==0x6)
377 return 2;
378 else if ((c >> 4) == 0xe)
379 return 3;
380 else if ((c >> 3) == 0x1e)
381 return 4;
382 else
383 return 0;
384}
385
386char *utf8_next(char *p)
387{
388 size_t len = utf8_length(*p);
389 size_t i = 0;
390 if (!len)
391 return 0;
392
393 for (; i < len; ++i)
394 {
395 ++p;
396 if (!*p)
397 return 0;
398 }
399 return p;
400}
401
402char *utf8_advance(char *p, size_t distance)
403{
404 size_t i = 0;
405 for (; i < distance && p; ++i)
406 {
407 p = utf8_next(p);
408 }
409 return p;
410}
411
412Uint32 utf8_decode(char *p, size_t len)
413{
414 Uint32 codepoint = 0;
415 size_t i = 0;
416 if (!len)
417 return 0;
418
419 for (; i < len; ++i)
420 {
421 if (i == 0)
422 codepoint = (0xff >> len) & *p;
423 else
424 {
425 codepoint <<= 6;
426 codepoint |= 0x3f & *p;
427 }
428 if (!*p)
429 return 0;
430 p++;
431 }
432
433 return codepoint;
434}
435
436void usage()
437{
438 SDL_Log("usage: testime [--font fontfile]\n");
439}
440
441void InitInput()
442{
443 /* Prepare a rect for text input */
444 textRect.x = textRect.y = 100;
445 textRect.w = DEFAULT_WINDOW_WIDTH - 2 * textRect.x;
446 textRect.h = 50;
447
448 text[0] = 0;
449 markedRect = textRect;
450 markedText[0] = 0;
451
452 SDL_StartTextInput();
453}
454
455void CleanupVideo()
456{
457 SDL_StopTextInput();
458#ifdef HAVE_SDL_TTF
459 TTF_CloseFont(font);
460 TTF_Quit();
461#else
462 unifont_cleanup();
463#endif
464}
465
466void _Redraw(int rendererID)
467{
468 SDL_Renderer * renderer = state->renderers[rendererID];
469 SDL_Rect drawnTextRect, cursorRect, underlineRect;
470 drawnTextRect = textRect;
471 drawnTextRect.w = 0;
472
473 SDL_SetRenderDrawColor(renderer, backColor.r, backColor.g, backColor.b, backColor.a);
474 SDL_RenderFillRect(renderer,&textRect);
475
476 if (*text)
477 {
478#ifdef HAVE_SDL_TTF
479 SDL_Surface *textSur = TTF_RenderUTF8_Blended(font, text, textColor);
480 SDL_Texture *texture;
481
482 /* Vertically center text */
483 drawnTextRect.y = textRect.y + (textRect.h - textSur->h) / 2;
484 drawnTextRect.w = textSur->w;
485 drawnTextRect.h = textSur->h;
486
487 texture = SDL_CreateTextureFromSurface(renderer,textSur);
488 SDL_FreeSurface(textSur);
489
490 SDL_RenderCopy(renderer,texture,NULL,&drawnTextRect);
491 SDL_DestroyTexture(texture);
492#else
493 char *utext = text;
494 Uint32 codepoint;
495 size_t len;
496 SDL_Rect dstrect;
497
498 dstrect.x = textRect.x;
499 dstrect.y = textRect.y + (textRect.h - 16 * UNIFONT_DRAW_SCALE) / 2;
500 dstrect.w = 16 * UNIFONT_DRAW_SCALE;
501 dstrect.h = 16 * UNIFONT_DRAW_SCALE;
502 drawnTextRect.y = dstrect.y;
503 drawnTextRect.h = dstrect.h;
504
505 while ((codepoint = utf8_decode(utext, len = utf8_length(*utext))))
506 {
507 Sint32 advance = unifont_draw_glyph(codepoint, rendererID, &dstrect) * UNIFONT_DRAW_SCALE;
508 dstrect.x += advance;
509 drawnTextRect.w += advance;
510 utext += len;
511 }
512#endif
513 }
514
515 markedRect.x = textRect.x + drawnTextRect.w;
516 markedRect.w = textRect.w - drawnTextRect.w;
517 if (markedRect.w < 0)
518 {
519 /* Stop text input because we cannot hold any more characters */
520 SDL_StopTextInput();
521 return;
522 }
523 else
524 {
525 SDL_StartTextInput();
526 }
527
528 cursorRect = drawnTextRect;
529 cursorRect.x += cursorRect.w;
530 cursorRect.w = 2;
531 cursorRect.h = drawnTextRect.h;
532
533 drawnTextRect.x += drawnTextRect.w;
534 drawnTextRect.w = 0;
535
536 SDL_SetRenderDrawColor(renderer, backColor.r, backColor.g, backColor.b, backColor.a);
537 SDL_RenderFillRect(renderer,&markedRect);
538
539 if (markedText[0])
540 {
541#ifdef HAVE_SDL_TTF
542 SDL_Surface *textSur;
543 SDL_Texture *texture;
544 if (cursor)
545 {
546 char *p = utf8_advance(markedText, cursor);
547 char c = 0;
548 if (!p)
549 p = &markedText[SDL_strlen(markedText)];
550
551 c = *p;
552 *p = 0;
553 TTF_SizeUTF8(font, markedText, &drawnTextRect.w, NULL);
554 cursorRect.x += drawnTextRect.w;
555 *p = c;
556 }
557 textSur = TTF_RenderUTF8_Blended(font, markedText, textColor);
558 /* Vertically center text */
559 drawnTextRect.y = textRect.y + (textRect.h - textSur->h) / 2;
560 drawnTextRect.w = textSur->w;
561 drawnTextRect.h = textSur->h;
562
563 texture = SDL_CreateTextureFromSurface(renderer,textSur);
564 SDL_FreeSurface(textSur);
565
566 SDL_RenderCopy(renderer,texture,NULL,&drawnTextRect);
567 SDL_DestroyTexture(texture);
568#else
569 int i = 0;
570 char *utext = markedText;
571 Uint32 codepoint;
572 size_t len;
573 SDL_Rect dstrect;
574
575 dstrect.x = drawnTextRect.x;
576 dstrect.y = textRect.y + (textRect.h - 16 * UNIFONT_DRAW_SCALE) / 2;
577 dstrect.w = 16 * UNIFONT_DRAW_SCALE;
578 dstrect.h = 16 * UNIFONT_DRAW_SCALE;
579 drawnTextRect.y = dstrect.y;
580 drawnTextRect.h = dstrect.h;
581
582 while ((codepoint = utf8_decode(utext, len = utf8_length(*utext))))
583 {
584 Sint32 advance = unifont_draw_glyph(codepoint, rendererID, &dstrect) * UNIFONT_DRAW_SCALE;
585 dstrect.x += advance;
586 drawnTextRect.w += advance;
587 if (i < cursor)
588 cursorRect.x += advance;
589 i++;
590 utext += len;
591 }
592#endif
593
594 if (cursor > 0)
595 {
596 cursorRect.y = drawnTextRect.y;
597 cursorRect.h = drawnTextRect.h;
598 }
599
600 underlineRect = markedRect;
601 underlineRect.y = drawnTextRect.y + drawnTextRect.h - 2;
602 underlineRect.h = 2;
603 underlineRect.w = drawnTextRect.w;
604
605 SDL_SetRenderDrawColor(renderer, lineColor.r, lineColor.g, lineColor.b, lineColor.a);
606 SDL_RenderFillRect(renderer, &underlineRect);
607 }
608
609 SDL_SetRenderDrawColor(renderer, lineColor.r, lineColor.g, lineColor.b, lineColor.a);
610 SDL_RenderFillRect(renderer,&cursorRect);
611
612 SDL_SetTextInputRect(&markedRect);
613}
614
615void Redraw()
616{
617 int i;
618 for (i = 0; i < state->num_windows; ++i) {
619 SDL_Renderer *renderer = state->renderers[i];
620 if (state->windows[i] == NULL)
621 continue;
622 SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0);
623 SDL_RenderClear(renderer);
624
625 /* Sending in the window id to let the font renderers know which one we're working with. */
626 _Redraw(i);
627
628 SDL_RenderPresent(renderer);
629 }
630}
631
632int main(int argc, char *argv[])
633{
634 int i, done;
635 SDL_Event event;
636 const char *fontname = DEFAULT_FONT;
637
638 /* Enable standard application logging */
639 SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
640
641 /* Initialize test framework */
642 state = SDLTest_CommonCreateState(argv, SDL_INIT_VIDEO);
643 if (!state) {
644 return 1;
645 }
646 for (i = 1; i < argc;i++) {
647 SDLTest_CommonArg(state, i);
648 }
649 for (argc--, argv++; argc > 0; argc--, argv++)
650 {
651 if (strcmp(argv[0], "--help") == 0) {
652 usage();
653 return 0;
654 }
655
656 else if (strcmp(argv[0], "--font") == 0)
657 {
658 argc--;
659 argv++;
660
661 if (argc > 0)
662 fontname = argv[0];
663 else {
664 usage();
665 return 0;
666 }
667 }
668 }
669
670 if (!SDLTest_CommonInit(state)) {
671 return 2;
672 }
673
674
675#ifdef HAVE_SDL_TTF
676 /* Initialize fonts */
677 TTF_Init();
678
679 font = TTF_OpenFont(fontname, DEFAULT_PTSIZE);
680 if (! font)
681 {
682 SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to find font: %s\n", TTF_GetError());
683 return -1;
684 }
685#else
686 if (unifont_init(fontname) < 0) {
687 return -1;
688 }
689#endif
690
691 SDL_Log("Using font: %s\n", fontname);
692
693 InitInput();
694 /* Create the windows and initialize the renderers */
695 for (i = 0; i < state->num_windows; ++i) {
696 SDL_Renderer *renderer = state->renderers[i];
697 SDL_SetRenderDrawBlendMode(renderer, SDL_BLENDMODE_NONE);
698 SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
699 SDL_RenderClear(renderer);
700 }
701 Redraw();
702 /* Main render loop */
703 done = 0;
704 while (!done) {
705 /* Check for events */
706 while (SDL_PollEvent(&event)) {
707 SDLTest_CommonEvent(state, &event, &done);
708 switch(event.type) {
709 case SDL_KEYDOWN: {
710 switch (event.key.keysym.sym)
711 {
712 case SDLK_RETURN:
713 text[0]=0x00;
714 Redraw();
715 break;
716 case SDLK_BACKSPACE:
717 /* Only delete text if not in editing mode. */
718 if (!markedText[0])
719 {
720 size_t textlen = SDL_strlen(text);
721
722 do {
723 if (textlen==0)
724 {
725 break;
726 }
727 if ((text[textlen-1] & 0x80) == 0x00)
728 {
729 /* One byte */
730 text[textlen-1]=0x00;
731 break;
732 }
733 if ((text[textlen-1] & 0xC0) == 0x80)
734 {
735 /* Byte from the multibyte sequence */
736 text[textlen-1]=0x00;
737 textlen--;
738 }
739 if ((text[textlen-1] & 0xC0) == 0xC0)
740 {
741 /* First byte of multibyte sequence */
742 text[textlen-1]=0x00;
743 break;
744 }
745 } while(1);
746
747 Redraw();
748 }
749 break;
750 }
751
752 if (done)
753 {
754 break;
755 }
756
757 SDL_Log("Keyboard: scancode 0x%08X = %s, keycode 0x%08X = %s\n",
758 event.key.keysym.scancode,
759 SDL_GetScancodeName(event.key.keysym.scancode),
760 event.key.keysym.sym, SDL_GetKeyName(event.key.keysym.sym));
761 break;
762
763 case SDL_TEXTINPUT:
764 if (event.text.text[0] == '\0' || event.text.text[0] == '\n' ||
765 markedRect.w < 0)
766 break;
767
768 SDL_Log("Keyboard: text input \"%s\"\n", event.text.text);
769
770 if (SDL_strlen(text) + SDL_strlen(event.text.text) < sizeof(text))
771 SDL_strlcat(text, event.text.text, sizeof(text));
772
773 SDL_Log("text inputed: %s\n", text);
774
775 /* After text inputed, we can clear up markedText because it */
776 /* is committed */
777 markedText[0] = 0;
778 Redraw();
779 break;
780
781 case SDL_TEXTEDITING:
782 SDL_Log("text editing \"%s\", selected range (%d, %d)\n",
783 event.edit.text, event.edit.start, event.edit.length);
784
785 SDL_strlcpy(markedText, event.edit.text, SDL_TEXTEDITINGEVENT_TEXT_SIZE);
786 cursor = event.edit.start;
787 Redraw();
788 break;
789 }
790 break;
791
792 }
793 }
794 }
795 CleanupVideo();
796 SDLTest_CommonQuit(state);
797 return 0;
798}
799
800
801/* vi: set ts=4 sw=4 expandtab: */
802