559 lines
21 KiB
C
559 lines
21 KiB
C
#include <stdio.h>
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#include <stdbool.h>
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#include <stdint.h>
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#include <assert.h>
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#include <math.h>
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#include FT_LCD_FILTER_H
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#include FT_OUTLINE_H
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#include FT_SYSTEM_H
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#ifdef _WIN32
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#include <windows.h>
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#include "utfconv.h"
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#endif
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#include "renderer.h"
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#include "renwindow.h"
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#define MAX_UNICODE 0x100000
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#define GLYPHSET_SIZE 256
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#define MAX_LOADABLE_GLYPHSETS (MAX_UNICODE / GLYPHSET_SIZE)
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#define SUBPIXEL_BITMAPS_CACHED 3
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RenWindow* window_renderer = NULL;
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static FT_Library library;
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// draw_rect_surface is used as a 1x1 surface to simplify ren_draw_rect with blending
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static SDL_Surface *draw_rect_surface;
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static void* check_alloc(void *ptr) {
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if (!ptr) {
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fprintf(stderr, "Fatal error: memory allocation failed\n");
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exit(EXIT_FAILURE);
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}
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return ptr;
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}
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/************************* Fonts *************************/
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typedef struct {
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unsigned int x0, x1, y0, y1, loaded;
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int bitmap_left, bitmap_top;
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float xadvance;
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} GlyphMetric;
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typedef struct {
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SDL_Surface* surface;
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GlyphMetric metrics[GLYPHSET_SIZE];
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} GlyphSet;
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typedef struct RenFont {
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FT_Face face;
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FT_StreamRec stream;
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GlyphSet* sets[SUBPIXEL_BITMAPS_CACHED][MAX_LOADABLE_GLYPHSETS];
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float size, space_advance, tab_advance;
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unsigned short max_height, baseline, height;
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ERenFontAntialiasing antialiasing;
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ERenFontHinting hinting;
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unsigned char style;
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unsigned short underline_thickness;
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char path[];
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} RenFont;
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static const char* utf8_to_codepoint(const char *p, unsigned *dst) {
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const unsigned char *up = (unsigned char*)p;
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unsigned res, n;
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switch (*p & 0xf0) {
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case 0xf0 : res = *up & 0x07; n = 3; break;
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case 0xe0 : res = *up & 0x0f; n = 2; break;
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case 0xd0 :
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case 0xc0 : res = *up & 0x1f; n = 1; break;
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default : res = *up; n = 0; break;
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}
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while (n--) {
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res = (res << 6) | (*(++up) & 0x3f);
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}
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*dst = res;
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return (const char*)up + 1;
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}
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static int font_set_load_options(RenFont* font) {
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int load_target = font->antialiasing == FONT_ANTIALIASING_NONE ? FT_LOAD_TARGET_MONO
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: (font->hinting == FONT_HINTING_SLIGHT ? FT_LOAD_TARGET_LIGHT : FT_LOAD_TARGET_NORMAL);
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int hinting = font->hinting == FONT_HINTING_NONE ? FT_LOAD_NO_HINTING : FT_LOAD_FORCE_AUTOHINT;
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return load_target | hinting;
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}
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static int font_set_render_options(RenFont* font) {
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if (font->antialiasing == FONT_ANTIALIASING_NONE)
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return FT_RENDER_MODE_MONO;
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if (font->antialiasing == FONT_ANTIALIASING_SUBPIXEL) {
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unsigned char weights[] = { 0x10, 0x40, 0x70, 0x40, 0x10 } ;
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switch (font->hinting) {
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case FONT_HINTING_NONE: FT_Library_SetLcdFilter(library, FT_LCD_FILTER_NONE); break;
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case FONT_HINTING_SLIGHT:
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case FONT_HINTING_FULL: FT_Library_SetLcdFilterWeights(library, weights); break;
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}
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return FT_RENDER_MODE_LCD;
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} else {
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switch (font->hinting) {
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case FONT_HINTING_NONE: return FT_RENDER_MODE_NORMAL; break;
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case FONT_HINTING_SLIGHT: return FT_RENDER_MODE_LIGHT; break;
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case FONT_HINTING_FULL: return FT_RENDER_MODE_LIGHT; break;
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}
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}
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return 0;
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}
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static int font_set_style(FT_Outline* outline, int x_translation, unsigned char style) {
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FT_Outline_Translate(outline, x_translation, 0 );
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if (style & FONT_STYLE_SMOOTH)
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FT_Outline_Embolden(outline, 1 << 5);
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if (style & FONT_STYLE_BOLD)
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FT_Outline_EmboldenXY(outline, 1 << 5, 0);
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if (style & FONT_STYLE_ITALIC) {
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FT_Matrix matrix = { 1 << 16, 1 << 14, 0, 1 << 16 };
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FT_Outline_Transform(outline, &matrix);
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}
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return 0;
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}
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static void font_load_glyphset(RenFont* font, int idx) {
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unsigned int render_option = font_set_render_options(font), load_option = font_set_load_options(font);
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int bitmaps_cached = font->antialiasing == FONT_ANTIALIASING_SUBPIXEL ? SUBPIXEL_BITMAPS_CACHED : 1;
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unsigned int byte_width = font->antialiasing == FONT_ANTIALIASING_SUBPIXEL ? 3 : 1;
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for (int j = 0, pen_x = 0; j < bitmaps_cached; ++j) {
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GlyphSet* set = check_alloc(calloc(1, sizeof(GlyphSet)));
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font->sets[j][idx] = set;
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for (int i = 0; i < GLYPHSET_SIZE; ++i) {
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int glyph_index = FT_Get_Char_Index(font->face, i + idx * GLYPHSET_SIZE);
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if (!glyph_index || FT_Load_Glyph(font->face, glyph_index, load_option | FT_LOAD_BITMAP_METRICS_ONLY)
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|| font_set_style(&font->face->glyph->outline, j * (64 / SUBPIXEL_BITMAPS_CACHED), font->style) || FT_Render_Glyph(font->face->glyph, render_option)) {
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continue;
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}
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FT_GlyphSlot slot = font->face->glyph;
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unsigned int glyph_width = slot->bitmap.width / byte_width;
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if (font->antialiasing == FONT_ANTIALIASING_NONE)
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glyph_width *= 8;
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set->metrics[i] = (GlyphMetric){ pen_x, pen_x + glyph_width, 0, slot->bitmap.rows, true, slot->bitmap_left, slot->bitmap_top, (slot->advance.x + slot->lsb_delta - slot->rsb_delta) / 64.0f};
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pen_x += glyph_width;
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font->max_height = slot->bitmap.rows > font->max_height ? slot->bitmap.rows : font->max_height;
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// In order to fix issues with monospacing; we need the unhinted xadvance; as FreeType doesn't correctly report the hinted advance for spaces on monospace fonts (like RobotoMono). See #843.
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if (!glyph_index || FT_Load_Glyph(font->face, glyph_index, (load_option | FT_LOAD_BITMAP_METRICS_ONLY | FT_LOAD_NO_HINTING) & ~FT_LOAD_FORCE_AUTOHINT)
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|| font_set_style(&font->face->glyph->outline, j * (64 / SUBPIXEL_BITMAPS_CACHED), font->style) || FT_Render_Glyph(font->face->glyph, render_option)) {
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continue;
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}
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slot = font->face->glyph;
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set->metrics[i].xadvance = slot->advance.x / 64.0f;
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}
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if (pen_x == 0)
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continue;
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set->surface = check_alloc(SDL_CreateRGBSurface(0, pen_x, font->max_height, font->antialiasing == FONT_ANTIALIASING_SUBPIXEL ? 24 : 8, 0, 0, 0, 0));
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uint8_t* pixels = set->surface->pixels;
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for (int i = 0; i < GLYPHSET_SIZE; ++i) {
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int glyph_index = FT_Get_Char_Index(font->face, i + idx * GLYPHSET_SIZE);
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if (!glyph_index || FT_Load_Glyph(font->face, glyph_index, load_option))
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continue;
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FT_GlyphSlot slot = font->face->glyph;
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font_set_style(&slot->outline, (64 / bitmaps_cached) * j, font->style);
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if (FT_Render_Glyph(slot, render_option))
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continue;
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for (unsigned int line = 0; line < slot->bitmap.rows; ++line) {
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int target_offset = set->surface->pitch * line + set->metrics[i].x0 * byte_width;
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int source_offset = line * slot->bitmap.pitch;
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if (font->antialiasing == FONT_ANTIALIASING_NONE) {
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for (unsigned int column = 0; column < slot->bitmap.width; ++column) {
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int current_source_offset = source_offset + (column / 8);
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int source_pixel = slot->bitmap.buffer[current_source_offset];
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pixels[++target_offset] = ((source_pixel >> (7 - (column % 8))) & 0x1) * 0xFF;
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}
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} else
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memcpy(&pixels[target_offset], &slot->bitmap.buffer[source_offset], slot->bitmap.width);
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}
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}
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}
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}
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static GlyphSet* font_get_glyphset(RenFont* font, unsigned int codepoint, int subpixel_idx) {
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int idx = (codepoint / GLYPHSET_SIZE) % MAX_LOADABLE_GLYPHSETS;
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if (!font->sets[font->antialiasing == FONT_ANTIALIASING_SUBPIXEL ? subpixel_idx : 0][idx])
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font_load_glyphset(font, idx);
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return font->sets[font->antialiasing == FONT_ANTIALIASING_SUBPIXEL ? subpixel_idx : 0][idx];
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}
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static RenFont* font_group_get_glyph(GlyphSet** set, GlyphMetric** metric, RenFont** fonts, unsigned int codepoint, int bitmap_index) {
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if (!metric) {
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return NULL;
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}
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if (bitmap_index < 0)
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bitmap_index += SUBPIXEL_BITMAPS_CACHED;
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for (int i = 0; i < FONT_FALLBACK_MAX && fonts[i]; ++i) {
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*set = font_get_glyphset(fonts[i], codepoint, bitmap_index);
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*metric = &(*set)->metrics[codepoint % GLYPHSET_SIZE];
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if ((*metric)->loaded || codepoint < 0xFF)
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return fonts[i];
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}
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if (*metric && !(*metric)->loaded && codepoint > 0xFF && codepoint != 0x25A1)
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return font_group_get_glyph(set, metric, fonts, 0x25A1, bitmap_index);
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return fonts[0];
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}
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static void font_clear_glyph_cache(RenFont* font) {
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for (int i = 0; i < SUBPIXEL_BITMAPS_CACHED; ++i) {
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for (int j = 0; j < MAX_LOADABLE_GLYPHSETS; ++j) {
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if (font->sets[i][j]) {
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if (font->sets[i][j]->surface)
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SDL_FreeSurface(font->sets[i][j]->surface);
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free(font->sets[i][j]);
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font->sets[i][j] = NULL;
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}
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}
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}
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}
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// based on https://github.com/libsdl-org/SDL_ttf/blob/2a094959055fba09f7deed6e1ffeb986188982ae/SDL_ttf.c#L1735
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static unsigned long font_file_read(FT_Stream stream, unsigned long offset, unsigned char *buffer, unsigned long count) {
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uint64_t amount;
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SDL_RWops *file = (SDL_RWops *) stream->descriptor.pointer;
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SDL_RWseek(file, (int) offset, RW_SEEK_SET);
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if (count == 0)
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return 0;
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amount = SDL_RWread(file, buffer, sizeof(char), count);
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if (amount <= 0)
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return 0;
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return (unsigned long) amount;
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}
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static void font_file_close(FT_Stream stream) {
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if (stream && stream->descriptor.pointer) {
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SDL_RWclose((SDL_RWops *) stream->descriptor.pointer);
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stream->descriptor.pointer = NULL;
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}
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}
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RenFont* ren_font_load(RenWindow *window_renderer, const char* path, float size, ERenFontAntialiasing antialiasing, ERenFontHinting hinting, unsigned char style) {
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RenFont *font = NULL;
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FT_Face face = NULL;
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SDL_RWops *file = SDL_RWFromFile(path, "rb");
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if (!file)
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goto rwops_failure;
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int len = strlen(path);
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font = check_alloc(calloc(1, sizeof(RenFont) + len + 1));
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font->stream.read = font_file_read;
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font->stream.close = font_file_close;
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font->stream.descriptor.pointer = file;
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font->stream.pos = 0;
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font->stream.size = (unsigned long) SDL_RWsize(file);
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if (FT_Open_Face(library, &(FT_Open_Args){ .flags = FT_OPEN_STREAM, .stream = &font->stream }, 0, &face))
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goto failure;
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const int surface_scale = renwin_get_surface(window_renderer).scale;
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if (FT_Set_Pixel_Sizes(face, 0, (int)(size*surface_scale)))
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goto failure;
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strcpy(font->path, path);
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font->face = face;
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font->size = size;
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font->height = (short)((face->height / (float)face->units_per_EM) * font->size);
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font->baseline = (short)((face->ascender / (float)face->units_per_EM) * font->size);
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font->antialiasing = antialiasing;
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font->hinting = hinting;
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font->style = style;
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if(FT_IS_SCALABLE(face))
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font->underline_thickness = (unsigned short)((face->underline_thickness / (float)face->units_per_EM) * font->size);
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if(!font->underline_thickness)
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font->underline_thickness = ceil((double) font->height / 14.0);
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if (FT_Load_Char(face, ' ', font_set_load_options(font)))
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goto failure;
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font->space_advance = face->glyph->advance.x / 64.0f;
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font->tab_advance = font->space_advance * 2;
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return font;
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failure:
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if (face)
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FT_Done_Face(face);
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if (font)
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free(font);
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return NULL;
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rwops_failure:
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if (file)
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SDL_RWclose(file);
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return NULL;
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}
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RenFont* ren_font_copy(RenWindow *window_renderer, RenFont* font, float size, ERenFontAntialiasing antialiasing, ERenFontHinting hinting, int style) {
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antialiasing = antialiasing == -1 ? font->antialiasing : antialiasing;
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hinting = hinting == -1 ? font->hinting : hinting;
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style = style == -1 ? font->style : style;
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return ren_font_load(window_renderer, font->path, size, antialiasing, hinting, style);
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}
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const char* ren_font_get_path(RenFont *font) {
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return font->path;
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}
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void ren_font_free(RenFont* font) {
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font_clear_glyph_cache(font);
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FT_Done_Face(font->face);
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free(font);
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}
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void ren_font_group_set_tab_size(RenFont **fonts, int n) {
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unsigned int tab_index = '\t' % GLYPHSET_SIZE;
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for (int j = 0; j < FONT_FALLBACK_MAX && fonts[j]; ++j) {
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for (int i = 0; i < (fonts[j]->antialiasing == FONT_ANTIALIASING_SUBPIXEL ? SUBPIXEL_BITMAPS_CACHED : 1); ++i)
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font_get_glyphset(fonts[j], '\t', i)->metrics[tab_index].xadvance = fonts[j]->space_advance * n;
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}
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}
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int ren_font_group_get_tab_size(RenFont **fonts) {
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unsigned int tab_index = '\t' % GLYPHSET_SIZE;
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float advance = font_get_glyphset(fonts[0], '\t', 0)->metrics[tab_index].xadvance;
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if (fonts[0]->space_advance) {
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advance /= fonts[0]->space_advance;
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}
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return advance;
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}
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float ren_font_group_get_size(RenFont **fonts) {
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return fonts[0]->size;
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}
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void ren_font_group_set_size(RenWindow *window_renderer, RenFont **fonts, float size) {
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const int surface_scale = renwin_get_surface(window_renderer).scale;
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for (int i = 0; i < FONT_FALLBACK_MAX && fonts[i]; ++i) {
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font_clear_glyph_cache(fonts[i]);
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FT_Face face = fonts[i]->face;
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FT_Set_Pixel_Sizes(face, 0, (int)(size*surface_scale));
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fonts[i]->size = size;
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fonts[i]->height = (short)((face->height / (float)face->units_per_EM) * size);
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fonts[i]->baseline = (short)((face->ascender / (float)face->units_per_EM) * size);
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FT_Load_Char(face, ' ', font_set_load_options(fonts[i]));
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fonts[i]->space_advance = face->glyph->advance.x / 64.0f;
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fonts[i]->tab_advance = fonts[i]->space_advance * 2;
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}
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}
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int ren_font_group_get_height(RenFont **fonts) {
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return fonts[0]->height;
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}
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double ren_font_group_get_width(RenWindow *window_renderer, RenFont **fonts, const char *text, size_t len, int *x_offset) {
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double width = 0;
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const char* end = text + len;
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GlyphMetric* metric = NULL; GlyphSet* set = NULL;
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bool set_x_offset = x_offset == NULL;
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while (text < end) {
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unsigned int codepoint;
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text = utf8_to_codepoint(text, &codepoint);
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RenFont* font = font_group_get_glyph(&set, &metric, fonts, codepoint, 0);
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if (!metric)
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break;
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width += (!font || metric->xadvance) ? metric->xadvance : fonts[0]->space_advance;
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if (!set_x_offset) {
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set_x_offset = true;
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*x_offset = metric->bitmap_left; // TODO: should this be scaled by the surface scale?
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}
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}
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const int surface_scale = renwin_get_surface(window_renderer).scale;
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if (!set_x_offset) {
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*x_offset = 0;
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}
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return width / surface_scale;
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}
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double ren_draw_text(RenSurface *rs, RenFont **fonts, const char *text, size_t len, float x, int y, RenColor color) {
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SDL_Surface *surface = rs->surface;
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SDL_Rect clip;
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SDL_GetClipRect(surface, &clip);
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const int surface_scale = rs->scale;
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double pen_x = x * surface_scale;
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y *= surface_scale;
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int bytes_per_pixel = surface->format->BytesPerPixel;
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const char* end = text + len;
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uint8_t* destination_pixels = surface->pixels;
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int clip_end_x = clip.x + clip.w, clip_end_y = clip.y + clip.h;
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RenFont* last = NULL;
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double last_pen_x = x;
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bool underline = fonts[0]->style & FONT_STYLE_UNDERLINE;
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bool strikethrough = fonts[0]->style & FONT_STYLE_STRIKETHROUGH;
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while (text < end) {
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unsigned int codepoint, r, g, b;
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text = utf8_to_codepoint(text, &codepoint);
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GlyphSet* set = NULL; GlyphMetric* metric = NULL;
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RenFont* font = font_group_get_glyph(&set, &metric, fonts, codepoint, (int)(fmod(pen_x, 1.0) * SUBPIXEL_BITMAPS_CACHED));
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if (!metric)
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break;
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int start_x = floor(pen_x) + metric->bitmap_left;
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int end_x = (metric->x1 - metric->x0) + start_x;
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int glyph_end = metric->x1, glyph_start = metric->x0;
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if (!metric->loaded && codepoint > 0xFF)
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ren_draw_rect(rs, (RenRect){ start_x + 1, y, font->space_advance - 1, ren_font_group_get_height(fonts) }, color);
|
|
if (set->surface && color.a > 0 && end_x >= clip.x && start_x < clip_end_x) {
|
|
uint8_t* source_pixels = set->surface->pixels;
|
|
for (int line = metric->y0; line < metric->y1; ++line) {
|
|
int target_y = line + y - metric->bitmap_top + fonts[0]->baseline * surface_scale;
|
|
if (target_y < clip.y)
|
|
continue;
|
|
if (target_y >= clip_end_y)
|
|
break;
|
|
if (start_x + (glyph_end - glyph_start) >= clip_end_x)
|
|
glyph_end = glyph_start + (clip_end_x - start_x);
|
|
if (start_x < clip.x) {
|
|
int offset = clip.x - start_x;
|
|
start_x += offset;
|
|
glyph_start += offset;
|
|
}
|
|
uint32_t* destination_pixel = (uint32_t*)&(destination_pixels[surface->pitch * target_y + start_x * bytes_per_pixel]);
|
|
uint8_t* source_pixel = &source_pixels[line * set->surface->pitch + glyph_start * (font->antialiasing == FONT_ANTIALIASING_SUBPIXEL ? 3 : 1)];
|
|
for (int x = glyph_start; x < glyph_end; ++x) {
|
|
uint32_t destination_color = *destination_pixel;
|
|
// the standard way of doing this would be SDL_GetRGBA, but that introduces a performance regression. needs to be investigated
|
|
SDL_Color dst = { (destination_color & surface->format->Rmask) >> surface->format->Rshift, (destination_color & surface->format->Gmask) >> surface->format->Gshift, (destination_color & surface->format->Bmask) >> surface->format->Bshift, (destination_color & surface->format->Amask) >> surface->format->Ashift };
|
|
SDL_Color src;
|
|
|
|
if (font->antialiasing == FONT_ANTIALIASING_SUBPIXEL) {
|
|
src.r = *(source_pixel++);
|
|
src.g = *(source_pixel++);
|
|
}
|
|
else {
|
|
src.r = *(source_pixel);
|
|
src.g = *(source_pixel);
|
|
}
|
|
|
|
src.b = *(source_pixel++);
|
|
src.a = 0xFF;
|
|
|
|
r = (color.r * src.r * color.a + dst.r * (65025 - src.r * color.a) + 32767) / 65025;
|
|
g = (color.g * src.g * color.a + dst.g * (65025 - src.g * color.a) + 32767) / 65025;
|
|
b = (color.b * src.b * color.a + dst.b * (65025 - src.b * color.a) + 32767) / 65025;
|
|
// the standard way of doing this would be SDL_GetRGBA, but that introduces a performance regression. needs to be investigated
|
|
*destination_pixel++ = dst.a << surface->format->Ashift | r << surface->format->Rshift | g << surface->format->Gshift | b << surface->format->Bshift;
|
|
}
|
|
}
|
|
}
|
|
|
|
float adv = metric->xadvance ? metric->xadvance : font->space_advance;
|
|
|
|
if(!last) last = font;
|
|
else if(font != last || text == end) {
|
|
double local_pen_x = text == end ? pen_x + adv : pen_x;
|
|
if (underline)
|
|
ren_draw_rect(rs, (RenRect){last_pen_x, y / surface_scale + last->height - 1, (local_pen_x - last_pen_x) / surface_scale, last->underline_thickness * surface_scale}, color);
|
|
if (strikethrough)
|
|
ren_draw_rect(rs, (RenRect){last_pen_x, y / surface_scale + last->height / 2, (local_pen_x - last_pen_x) / surface_scale, last->underline_thickness * surface_scale}, color);
|
|
last = font;
|
|
last_pen_x = pen_x;
|
|
}
|
|
|
|
pen_x += adv;
|
|
}
|
|
return pen_x / surface_scale;
|
|
}
|
|
|
|
/******************* Rectangles **********************/
|
|
static inline RenColor blend_pixel(RenColor dst, RenColor src) {
|
|
int ia = 0xff - src.a;
|
|
dst.r = ((src.r * src.a) + (dst.r * ia)) >> 8;
|
|
dst.g = ((src.g * src.a) + (dst.g * ia)) >> 8;
|
|
dst.b = ((src.b * src.a) + (dst.b * ia)) >> 8;
|
|
return dst;
|
|
}
|
|
|
|
void ren_draw_rect(RenSurface *rs, RenRect rect, RenColor color) {
|
|
if (color.a == 0) { return; }
|
|
|
|
SDL_Surface *surface = rs->surface;
|
|
const int surface_scale = rs->scale;
|
|
|
|
SDL_Rect dest_rect = { rect.x * surface_scale,
|
|
rect.y * surface_scale,
|
|
rect.width * surface_scale,
|
|
rect.height * surface_scale };
|
|
|
|
if (color.a == 0xff) {
|
|
uint32_t translated = SDL_MapRGB(surface->format, color.r, color.g, color.b);
|
|
SDL_FillRect(surface, &dest_rect, translated);
|
|
} else {
|
|
// Seems like SDL doesn't handle clipping as we expect when using
|
|
// scaled blitting, so we "clip" manually.
|
|
SDL_Rect clip;
|
|
SDL_GetClipRect(surface, &clip);
|
|
if (!SDL_IntersectRect(&clip, &dest_rect, &dest_rect)) return;
|
|
|
|
uint32_t *pixel = (uint32_t *)draw_rect_surface->pixels;
|
|
*pixel = SDL_MapRGBA(draw_rect_surface->format, color.r, color.g, color.b, color.a);
|
|
SDL_BlitScaled(draw_rect_surface, NULL, surface, &dest_rect);
|
|
}
|
|
}
|
|
|
|
/*************** Window Management ****************/
|
|
RenWindow* ren_init(SDL_Window *win) {
|
|
assert(win);
|
|
int error = FT_Init_FreeType( &library );
|
|
if ( error ) {
|
|
fprintf(stderr, "internal font error when starting the application\n");
|
|
return NULL;
|
|
}
|
|
RenWindow* window_renderer = calloc(1, sizeof(RenWindow));
|
|
|
|
window_renderer->window = win;
|
|
renwin_init_surface(window_renderer);
|
|
renwin_init_command_buf(window_renderer);
|
|
renwin_clip_to_surface(window_renderer);
|
|
draw_rect_surface = SDL_CreateRGBSurface(0, 1, 1, 32,
|
|
0xFF000000, 0x00FF0000, 0x0000FF00, 0x000000FF);
|
|
|
|
return window_renderer;
|
|
}
|
|
|
|
void ren_free(RenWindow* window_renderer) {
|
|
assert(window_renderer);
|
|
renwin_free(window_renderer);
|
|
SDL_FreeSurface(draw_rect_surface);
|
|
free(window_renderer->command_buf);
|
|
window_renderer->command_buf = NULL;
|
|
window_renderer->command_buf_size = 0;
|
|
free(window_renderer);
|
|
}
|
|
|
|
void ren_resize_window(RenWindow *window_renderer) {
|
|
renwin_resize_surface(window_renderer);
|
|
renwin_update_scale(window_renderer);
|
|
}
|
|
|
|
|
|
void ren_update_rects(RenWindow *window_renderer, RenRect *rects, int count) {
|
|
static bool initial_frame = true;
|
|
if (initial_frame) {
|
|
renwin_show_window(window_renderer);
|
|
initial_frame = false;
|
|
}
|
|
renwin_update_rects(window_renderer, rects, count);
|
|
}
|
|
|
|
|
|
void ren_set_clip_rect(RenWindow *window_renderer, RenRect rect) {
|
|
renwin_set_clip_rect(window_renderer, rect);
|
|
}
|
|
|
|
|
|
void ren_get_size(RenWindow *window_renderer, int *x, int *y) {
|
|
RenSurface rs = renwin_get_surface(window_renderer);
|
|
*x = rs.surface->w / rs.scale;
|
|
*y = rs.surface->h / rs.scale;
|
|
}
|