Render non-ascii glyphs.
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Steve
parent
a851ea6c01
commit
3d4d9fcf14
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# POfileorTBFS:handWCpygt2015-6,JwsbuGNUL3.Emj@c/"IV\RMD8+v?x;=%!AYq()'kH[]KzQX4Z79*àéí¡Çóè·úïçüºòÉÒÍÀ°æåøÆÅØ<>öÄäßÜá¿ñÁÊûâîôÈêùœÙìëęąłćżńśźŻŚŁĆÖ
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@ -77,6 +77,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#define NUM_TEXTURE_BUCKETS 32
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#define NUM_ATLAS_BUCKETS 64
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#define NUM_GLYPH_BUCKETS 128
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#define MAX_STARS 500
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@ -43,6 +43,7 @@ typedef struct Tuple Tuple;
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typedef struct Credit Credit;
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typedef struct AtlasImage AtlasImage;
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typedef struct Font Font;
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typedef struct Glyph Glyph;
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typedef struct {
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int debug;
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@ -544,10 +545,16 @@ struct Credit {
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Credit *next;
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};
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struct Glyph {
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char character[MAX_NAME_LENGTH];
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SDL_Rect rect;
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Glyph *next;
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};
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struct Font {
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char name[MAX_NAME_LENGTH];
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SDL_Texture *texture;
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AtlasImage glyphs[128];
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Glyph glyphHead[NUM_GLYPH_BUCKETS];
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Font *next;
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};
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@ -46,9 +46,11 @@ char *getFileLocation(char *filename)
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char *readFile(char *filename)
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{
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char *buffer = 0;
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char *buffer;
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long length;
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FILE *file = fopen(getFileLocation(filename), "rb");
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FILE *file;
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file = fopen(getFileLocation(filename), "rb");
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if (file)
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{
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@ -26,6 +26,10 @@ static void drawTextLines(int x, int y, int size, int align, SDL_Color color);
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static void drawTextLine(int x, int y, int size, int align, SDL_Color color, const char *line);
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void calcTextDimensions(const char *text, int size, int *w, int *h);
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void useFont(char *name);
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static void initChars(Font *f);
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static char *nextCharacter(const char *str, int *i);
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static Glyph *findGlyph(char *c);
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static int strlenMB(char *text);
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static SDL_Color white = {255, 255, 255, 255};
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static char drawTextBuffer[1024];
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@ -40,6 +44,7 @@ void initFonts(void)
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fontTail = &fontHead;
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initFont("roboto", getFileLocation("data/fonts/Roboto-Medium.ttf"));
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initFont("khosrau", getFileLocation("data/fonts/Khosrau.ttf"));
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useFont("roboto");
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@ -52,8 +57,13 @@ static void initFont(char *name, char *filename)
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Font *f;
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SDL_Surface *surface, *text;
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SDL_Rect dest;
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Glyph *g;
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int i;
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char c[2];
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f = malloc(sizeof(Font));
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memset(f, 0, sizeof(Font));
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initChars(f);
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surface = SDL_CreateRGBSurface(0, FONT_TEXTURE_SIZE, FONT_TEXTURE_SIZE, 32, 0, 0, 0, 0xff);
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@ -61,35 +71,31 @@ static void initFont(char *name, char *filename)
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font = TTF_OpenFont(filename, FONT_SIZE);
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f = malloc(sizeof(Font));
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memset(f, 0, sizeof(Font));
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dest.x = dest.y = 0;
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for (i = ' ' ; i <= 'z' ; i++)
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for (i = 0 ; i < NUM_GLYPH_BUCKETS ; i++)
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{
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memset(c, 0, 2);
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sprintf(c, "%c", i);
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text = TTF_RenderUTF8_Blended(font, c, white);
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TTF_SizeText(font, c, &dest.w, &dest.h);
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if (dest.x + dest.w >= FONT_TEXTURE_SIZE)
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for (g = f->glyphHead[i].next ; g != NULL ; g = g->next)
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{
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dest.x = 0;
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text = TTF_RenderUTF8_Blended(font, g->character, white);
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dest.y += dest.h + 1;
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TTF_SizeText(font, g->character, &dest.w, &dest.h);
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if (dest.x + dest.w >= FONT_TEXTURE_SIZE)
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{
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dest.x = 0;
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dest.y += dest.h + 1;
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}
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SDL_BlitSurface(text, NULL, surface, &dest);
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g->rect = dest;
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SDL_FreeSurface(text);
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dest.x += dest.w;
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}
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SDL_BlitSurface(text, NULL, surface, &dest);
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f->glyphs[i].rect = dest;
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SDL_FreeSurface(text);
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dest.x += dest.w;
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}
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TTF_CloseFont(font);
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@ -98,17 +104,47 @@ static void initFont(char *name, char *filename)
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f->texture = texture;
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for (i = 0 ; i < 128 ; i++)
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{
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f->glyphs[i].texture = texture;
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}
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strcpy(f->name, name);
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fontTail->next = f;
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fontTail = f;
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}
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static void initChars(Font *f)
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{
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char *characters, *character;
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Glyph *g, *glyphTail;
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int i, bucket;
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characters = readFile("data/locale/characters.dat");
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i = 0;
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character = nextCharacter(characters, &i);
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while (character)
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{
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bucket = hashcode(character) % NUM_GLYPH_BUCKETS;
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glyphTail = &f->glyphHead[bucket];
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/* horrible bit to look for the tail */
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while (glyphTail->next)
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{
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glyphTail = glyphTail->next;
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}
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g = malloc(sizeof(Glyph));
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memset(g, 0, sizeof(Glyph));
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glyphTail->next = g;
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glyphTail = g;
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STRNCPY(g->character, character, MAX_NAME_LENGTH);
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character = nextCharacter(characters, &i);
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}
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}
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void drawText(int x, int y, int size, int align, SDL_Color color, const char *format, ...)
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{
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va_list args;
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@ -143,7 +179,7 @@ static void drawTextLines(int x, int y, int size, int align, SDL_Color color)
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memset(&line, '\0', sizeof(line));
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memset(&token, '\0', sizeof(token));
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len = strlen(drawTextBuffer);
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len = strlenMB(drawTextBuffer);
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n = currentWidth = 0;
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@ -222,24 +258,53 @@ static void drawTextLine(int x, int y, int size, int align, SDL_Color color, con
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static void drawWord(char *word, int *x, int *y, int startX)
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{
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int i, c;
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int i;
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char *character;
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SDL_Rect dest;
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Glyph *g;
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for (i = 0 ; i < strlen(word) ; i++)
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i = 0;
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character = nextCharacter(word, &i);
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while (character)
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{
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c = word[i];
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g = findGlyph(character);
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dest.x = *x;
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dest.y = *y;
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dest.w = activeFont->glyphs[c].rect.w * scale;
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dest.h = activeFont->glyphs[c].rect.h * scale;
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dest.w = g->rect.w * scale;
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dest.h = g->rect.h * scale;
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SDL_RenderCopy(app.renderer, activeFont->texture, &activeFont->glyphs[c].rect, &dest);
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SDL_RenderCopy(app.renderer, activeFont->texture, &g->rect, &dest);
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*x += activeFont->glyphs[c].rect.w * scale;
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*x += g->rect.w * scale;
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character = nextCharacter(word, &i);
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}
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}
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static Glyph *findGlyph(char *c)
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{
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Glyph *g;
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int bucket;
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bucket = hashcode(c) % NUM_GLYPH_BUCKETS;
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for (g = activeFont->glyphHead[bucket].next ; g != NULL ; g = g->next)
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{
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if (strcmp(g->character, c) == 0)
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{
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return g;
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}
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}
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SDL_LogMessage(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_CRITICAL, "Couldn't find glyph for '%s'\n", c);
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exit(1);
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return NULL;
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}
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void useFont(char *name)
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{
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Font *f;
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@ -256,20 +321,28 @@ void useFont(char *name)
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void calcTextDimensions(const char *text, int size, int *w, int *h)
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{
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int i, c;
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float scale;
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int i;
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char *character;
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Glyph *g;
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scale = size / (FONT_SIZE * 1.0f);
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*w = 0;
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*h = 0;
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for (i = 0 ; i < strlen(text) ; i++)
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i = 0;
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character = nextCharacter(text, &i);
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while (character)
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{
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c = text[i];
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g = findGlyph(character);
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*w += activeFont->glyphs[c].rect.w * scale;
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*h = MAX(activeFont->glyphs[c].rect.h * scale, *h);
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*w += g->rect.w * scale;
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*h = MAX(g->rect.h * scale, *h);
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character = nextCharacter(text, &i);
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}
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}
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@ -284,7 +357,7 @@ int getWrappedTextHeight(char *text, int size)
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y = 0;
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h = 0;
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currentWidth = 0;
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len = strlen(drawTextBuffer);
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len = strlenMB(drawTextBuffer);
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memset(word, 0, MAX_WORD_LENGTH);
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for (i = 0 ; i < len ; i++)
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@ -311,3 +384,52 @@ int getWrappedTextHeight(char *text, int size)
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return y + h;
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}
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static char *nextCharacter(const char *str, int *i)
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{
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static char character[MAX_NAME_LENGTH];
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unsigned char bit;
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int n;
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memset(character, '\0', MAX_NAME_LENGTH);
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n = 0;
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while (1)
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{
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bit = (unsigned char)str[*i];
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if ((bit >= ' ' && bit <= 'z') || bit >= 0xC0 || bit == '\0')
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{
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if (n > 0)
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{
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return character[0] != '\0' ? character : NULL;
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}
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}
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character[n++] = str[*i];
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*i = *i + 1;
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}
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}
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static int strlenMB(char *text)
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{
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int i, n;
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unsigned char bit;
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n = 0;
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for (i = 0 ; i < strlen(text) ; i++)
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{
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bit = (unsigned char)text[i];
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if ((bit >= ' ' && bit <= 'z') || bit >= 0xC0)
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{
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n++;
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}
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}
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return n;
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}
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@ -31,6 +31,8 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#define MAX_WORD_LENGTH 128
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extern char *getFileLocation(char *filename);
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extern unsigned long hashcode(const char *str);
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extern char *readFile(char *filename);
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extern SDL_Texture *toTexture(SDL_Surface *surface, int destroySurface);
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extern App app;
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