| 0,0 → 1,133 |
|---|
| #include "fitz.h" |
| |
| fz_text * |
| fz_new_text(fz_font *font, fz_matrix trm, int wmode) |
| { |
| fz_text *text; |
| |
| text = fz_malloc(sizeof(fz_text)); |
| text->font = fz_keep_font(font); |
| text->trm = trm; |
| text->wmode = wmode; |
| text->len = 0; |
| text->cap = 0; |
| text->items = NULL; |
| |
| return text; |
| } |
| |
| void |
| fz_free_text(fz_text *text) |
| { |
| fz_drop_font(text->font); |
| fz_free(text->items); |
| fz_free(text); |
| } |
| |
| fz_text * |
| fz_clone_text(fz_text *old) |
| { |
| fz_text *text; |
| |
| text = fz_malloc(sizeof(fz_text)); |
| text->font = fz_keep_font(old->font); |
| text->trm = old->trm; |
| text->wmode = old->wmode; |
| text->len = old->len; |
| text->cap = text->len; |
| text->items = fz_calloc(text->len, sizeof(fz_text_item)); |
| memcpy(text->items, old->items, text->len * sizeof(fz_text_item)); |
| |
| return text; |
| } |
| |
| fz_rect |
| fz_bound_text(fz_text *text, fz_matrix ctm) |
| { |
| fz_matrix trm; |
| fz_rect bbox; |
| fz_rect fbox; |
| int i; |
| |
| if (text->len == 0) |
| return fz_empty_rect; |
| |
| /* find bbox of glyph origins in ctm space */ |
| |
| bbox.x0 = bbox.x1 = text->items[0].x; |
| bbox.y0 = bbox.y1 = text->items[0].y; |
| |
| for (i = 1; i < text->len; i++) |
| { |
| bbox.x0 = MIN(bbox.x0, text->items[i].x); |
| bbox.y0 = MIN(bbox.y0, text->items[i].y); |
| bbox.x1 = MAX(bbox.x1, text->items[i].x); |
| bbox.y1 = MAX(bbox.y1, text->items[i].y); |
| } |
| |
| bbox = fz_transform_rect(ctm, bbox); |
| |
| /* find bbox of font in trm * ctm space */ |
| |
| trm = fz_concat(text->trm, ctm); |
| trm.e = 0; |
| trm.f = 0; |
| |
| fbox.x0 = text->font->bbox.x0 * 0.001f; |
| fbox.y0 = text->font->bbox.y0 * 0.001f; |
| fbox.x1 = text->font->bbox.x1 * 0.001f; |
| fbox.y1 = text->font->bbox.y1 * 0.001f; |
| |
| fbox = fz_transform_rect(trm, fbox); |
| |
| /* expand glyph origin bbox by font bbox */ |
| |
| bbox.x0 += fbox.x0; |
| bbox.y0 += fbox.y0; |
| bbox.x1 += fbox.x1; |
| bbox.y1 += fbox.y1; |
| |
| return bbox; |
| } |
| |
| static void |
| fz_grow_text(fz_text *text, int n) |
| { |
| if (text->len + n < text->cap) |
| return; |
| while (text->len + n > text->cap) |
| text->cap = text->cap + 36; |
| text->items = fz_realloc(text->items, text->cap, sizeof(fz_text_item)); |
| } |
| |
| void |
| fz_add_text(fz_text *text, int gid, int ucs, float x, float y) |
| { |
| fz_grow_text(text, 1); |
| text->items[text->len].ucs = ucs; |
| text->items[text->len].gid = gid; |
| text->items[text->len].x = x; |
| text->items[text->len].y = y; |
| text->len++; |
| } |
| |
| static int isxmlmeta(int c) |
| { |
| return c < 32 || c >= 128 || c == '&' || c == '<' || c == '>' || c == '\'' || c == '"'; |
| } |
| |
| void fz_debug_text(fz_text *text, int indent) |
| { |
| int i, n; |
| for (i = 0; i < text->len; i++) |
| { |
| for (n = 0; n < indent; n++) |
| putchar(' '); |
| if (!isxmlmeta(text->items[i].ucs)) |
| printf("<g ucs=\"%c\" gid=\"%d\" x=\"%g\" y=\"%g\" />\n", |
| text->items[i].ucs, text->items[i].gid, text->items[i].x, text->items[i].y); |
| else |
| printf("<g ucs=\"U+%04X\" gid=\"%d\" x=\"%g\" y=\"%g\" />\n", |
| text->items[i].ucs, text->items[i].gid, text->items[i].x, text->items[i].y); |
| } |
| } |