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comparison test/testime.c @ 4757:140be6839185

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Correctly draw cursor based on position. Had to add UTF-8 functions utf8_length, utf8_next, utf8_advance.
author dewyatt
date Sun, 25 Jul 2010 13:17:31 -0400
parents b99b1024607a
children 518d1679d2d0
comparison
equal deleted inserted replaced
4756:b99b1024607a 4757:140be6839185
24 #endif 24 #endif
25 SDL_Rect textRect, markedRect; 25 SDL_Rect textRect, markedRect;
26 Uint32 lineColor, backColor; 26 Uint32 lineColor, backColor;
27 SDL_Color textColor = { 0, 0, 0 }; 27 SDL_Color textColor = { 0, 0, 0 };
28 char text[MAX_TEXT_LENGTH], markedText[SDL_TEXTEDITINGEVENT_TEXT_SIZE]; 28 char text[MAX_TEXT_LENGTH], markedText[SDL_TEXTEDITINGEVENT_TEXT_SIZE];
29 int cursor = 0;
30
31 size_t utf8_length(unsigned char c)
32 {
33 c = (unsigned char)(0xff & c);
34 if (c < 0x80)
35 return 1;
36 else if ((c >> 5) ==0x6)
37 return 2;
38 else if ((c >> 4) == 0xe)
39 return 3;
40 else if ((c >> 3) == 0x1e)
41 return 4;
42 else
43 return 0;
44 }
45
46 char *utf8_next(char *p)
47 {
48 size_t len = utf8_length(*p);
49 size_t i = 0;
50 if (!len)
51 return 0;
52
53 for (; i < len; ++i)
54 {
55 ++p;
56 if (!*p)
57 return 0;
58 }
59 return p;
60 }
61
62 char *utf8_advance(char *p, size_t distance)
63 {
64 size_t i = 0;
65 for (; i < distance && p; ++i)
66 {
67 p = utf8_next(p);
68 }
69 return p;
70 }
29 71
30 void usage() 72 void usage()
31 { 73 {
32 printf("usage: testime [--font fontfile] [--fullscreen]\n"); 74 printf("usage: testime [--font fontfile] [--fullscreen]\n");
33 exit(0); 75 exit(0);
179 221
180 SDL_FillRect(screen, &markedRect, backColor); 222 SDL_FillRect(screen, &markedRect, backColor);
181 if (markedText[0]) 223 if (markedText[0])
182 { 224 {
183 #ifdef HAVE_SDL_TTF 225 #ifdef HAVE_SDL_TTF
226 if (cursor)
227 {
228 char *p = utf8_advance(markedText, cursor);
229 char c = 0;
230 if (!p)
231 p = &markedText[strlen(markedText)];
232
233 c = *p;
234 *p = 0;
235 TTF_SizeUTF8(font, markedText, &w, 0);
236 cursorRect.x += w;
237 *p = c;
238 }
184 RenderText(screen, font, markedText, markedRect.x, markedRect.y, textColor); 239 RenderText(screen, font, markedText, markedRect.x, markedRect.y, textColor);
185 TTF_SizeUTF8(font, markedText, &w, &h); 240 TTF_SizeUTF8(font, markedText, &w, &h);
186 #endif 241 #endif
187 242
188 underlineRect = markedRect; 243 underlineRect = markedRect;
189 underlineRect.y += (h - 2); 244 underlineRect.y += (h - 2);
190 underlineRect.h = 2; 245 underlineRect.h = 2;
191 underlineRect.w = w; 246 underlineRect.w = w;
192
193 cursorRect.x += w + 1;
194 247
195 SDL_FillRect(screen, &underlineRect, lineColor); 248 SDL_FillRect(screen, &underlineRect, lineColor);
196 } 249 }
197 250
198 SDL_FillRect(screen, &cursorRect, lineColor); 251 SDL_FillRect(screen, &cursorRect, lineColor);
306 case SDL_TEXTEDITING: 359 case SDL_TEXTEDITING:
307 fprintf(stderr, "text editing \"%s\", selected range (%d, %d)\n", 360 fprintf(stderr, "text editing \"%s\", selected range (%d, %d)\n",
308 event.edit.text, event.edit.start, event.edit.length); 361 event.edit.text, event.edit.start, event.edit.length);
309 362
310 strcpy(markedText, event.edit.text); 363 strcpy(markedText, event.edit.text);
364 cursor = event.edit.start;
311 Redraw(); 365 Redraw();
312 break; 366 break;
313 367
314 case SDL_QUIT: 368 case SDL_QUIT:
315 done = 1; 369 done = 1;