diff options
Diffstat (limited to 'src/font.c')
| -rw-r--r-- | src/font.c | 32 |
1 files changed, 31 insertions, 1 deletions
@@ -326,6 +326,30 @@ bool load_sprite_font(SDL_Renderer* renderer, const char* filename, sprite_font* return true; } +void measure_text +( + sprite_font* font, + const unsigned char* text, + float scale, + float* width, float* height +) { + *width = 0; + *height = 0; + + while (*text) { + const font_char* fc = &font->characters[*text-font->smallest_character]; + if (!fc->active) { + text++; + continue; + } + + *width += fc->x_advance * scale; + *height = SDL_max(*height, (fc->y_offset+fc->height) * scale); + + text++; + } +} + void draw_text_with_spritefont_extended ( SDL_Renderer* renderer, @@ -334,6 +358,12 @@ void draw_text_with_spritefont_extended float x_position, float y_position, float scale ) { + float text_column_length, text_column_height; + measure_text(font, text, scale, &text_column_length, &text_column_height); + + x_position -= text_column_length / 2; + y_position -= text_column_height / 2; + while (*text) { const font_char* fc = &font->characters[*text-font->smallest_character]; if (!fc->active) { @@ -351,7 +381,7 @@ void draw_text_with_spritefont_extended }, &(SDL_FRect){ .x = x_position + fc->x_offset*scale, - .y = (y_position + fc->y_offset) * scale, + .y = y_position + fc->y_offset * scale, .w = fc->width * scale, .h = fc->height * scale }); |