tMove common text functions to text-common.* - ltkx - GUI toolkit for X11 (WIP)
HTML git clone git://lumidify.org/ltkx.git
DIR Log
DIR Files
DIR Refs
DIR README
DIR LICENSE
---
DIR commit f344c3f28da7995f19ec0549d90f275d3fd1715a
DIR parent 57d85ccfe4c9ac3de63dab6979e65dbe0696f4b7
HTML Author: lumidify <nobody@lumidify.org>
Date: Fri, 8 May 2020 20:57:03 +0200
Move common text functions to text-common.*
Diffstat:
M Makefile | 4 ++--
M button.c | 1 +
M gap_buffer.h | 4 ++--
M ltk.c | 1 +
M ltkx.h | 1 +
A text-common.c | 409 +++++++++++++++++++++++++++++++
A text-common.h | 125 +++++++++++++++++++++++++++++++
M text-hb.c | 291 +------------------------------
M text-hb.h | 83 +------------------------------
9 files changed, 544 insertions(+), 375 deletions(-)
---
DIR diff --git a/Makefile b/Makefile
t@@ -1,7 +1,7 @@
LIBS = -lm `pkg-config --libs x11 harfbuzz fontconfig fribidi`
STD = -std=c99
CFLAGS = -g -w -fcommon -Wall -Werror -Wextra `pkg-config --cflags x11 harfbuzz fontconfig fribidi` -pedantic
-OBJ = stb_truetype.o text-hb.o ltk.o ini.o grid.o button.o test1.o
+OBJ = stb_truetype.o text-common.o text-hb.o ltk.o ini.o grid.o button.o test1.o
test1: $(OBJ)
gcc $(STD) -o $@ $(OBJ) $(LIBS)
t@@ -12,4 +12,4 @@ test1: $(OBJ)
.PHONY: clean
clean:
- rm -f stb_truetype.o text-hb.o ltk.o ini.o grid.o button.o test1.o test1
+ rm -f stb_truetype.o text-common.o text-hb.o ltk.o ini.o grid.o button.o test1.o test1
DIR diff --git a/button.c b/button.c
t@@ -29,6 +29,7 @@
#include <fribidi.h>
#include <harfbuzz/hb.h>
#include <fontconfig/fontconfig.h>
+#include "text-common.h"
#include "text-hb.h"
#include "button.h"
DIR diff --git a/gap_buffer.h b/gap_buffer.h
t@@ -27,7 +27,7 @@
#include <stdio.h>
#include <stdlib.h>
-#define LTK_INIT_GAP_BUFFER_DECL(type) \
+#define LTK_GAP_BUFFER_INIT_DECL(type) \
struct ltk_gap_buffer_##type## { \
type *buf; \
size_t buf_size; \
t@@ -47,7 +47,7 @@ void ltk_gap_buffer_move_gap_##type##( \
struct ltk_gap_buffer_##type## *gb, size_t pos); \
void ltk_gap_buffer_destroy_##type##(struct ltk_gap_buffer_##type## *gb);
-#define LTK_INIT_GAP_BUFFER_IMPL(type) \
+#define LTK_GAP_BUFFER_INIT_IMPL(type) \
struct ltk_gap_buffer_##type## * \
ltk_gap_buffer_create_##type##(void) { \
struct ltk_gap_buffer_##type## *gb = \
DIR diff --git a/ltk.c b/ltk.c
t@@ -32,6 +32,7 @@
#include <fribidi.h>
#include <harfbuzz/hb.h>
#include <fontconfig/fontconfig.h>
+#include "text-common.h"
#include "text-hb.h"
Ltk *ltk_global;
DIR diff --git a/ltkx.h b/ltkx.h
t@@ -8,6 +8,7 @@
#include <fribidi.h>
#include <harfbuzz/hb.h>
#include <harfbuzz/hb-ot.h>
+#include "text-common.h"
#include "text-hb.h"
#include "button.h"
#include "grid.h"
DIR diff --git a/text-common.c b/text-common.c
t@@ -0,0 +1,409 @@
+/*
+ * This file is part of the Lumidify ToolKit (LTK)
+ * Copyright (c) 2017, 2018, 2020 lumidify <nobody@lumidify.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <limits.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include "stb_truetype.h" /* http://nothings.org/stb/stb_truetype.h */
+#include <fontconfig/fontconfig.h>
+#include "khash.h"
+#include <fribidi.h>
+#include <harfbuzz/hb.h>
+#include <harfbuzz/hb-ot.h>
+#include "text-common.h"
+#include "ltk.h"
+
+extern Ltk *ltk_global;
+
+/* These unicode routines are taken from
+ * https://github.com/JeffBezanson/cutef8 */
+
+/* is c the start of a utf8 sequence? */
+#define isutf(c) (((c)&0xC0)!=0x80)
+
+static const uint32_t offsetsFromUTF8[6] = {
+ 0x00000000UL, 0x00003080UL, 0x000E2080UL,
+ 0x03C82080UL, 0xFA082080UL, 0x82082080UL
+};
+
+/* next character without NUL character terminator */
+uint32_t u8_nextmemchar(const char *s, size_t *i)
+{
+ uint32_t ch = 0;
+ size_t sz = 0;
+ do {
+ ch <<= 6;
+ ch += (unsigned char)s[(*i)++];
+ sz++;
+ } while (!isutf(s[*i]));
+ ch -= offsetsFromUTF8[sz-1];
+
+ return ch;
+}
+
+/* number of characters in NUL-terminated string */
+size_t u8_strlen(const char *s)
+{
+ size_t count = 0;
+ size_t i = 0, lasti;
+
+ while (1) {
+ lasti = i;
+ while (s[i] > 0)
+ i++;
+ count += (i-lasti);
+ if (s[i++]==0) break;
+ (void)(isutf(s[++i]) || isutf(s[++i]) || ++i);
+ count++;
+ }
+ return count;
+}
+
+size_t u8_wc_toutf8(char *dest, uint32_t ch)
+{
+ if (ch < 0x80) {
+ dest[0] = (char)ch;
+ return 1;
+ }
+ if (ch < 0x800) {
+ dest[0] = (ch>>6) | 0xC0;
+ dest[1] = (ch & 0x3F) | 0x80;
+ return 2;
+ }
+ if (ch < 0x10000) {
+ dest[0] = (ch>>12) | 0xE0;
+ dest[1] = ((ch>>6) & 0x3F) | 0x80;
+ dest[2] = (ch & 0x3F) | 0x80;
+ return 3;
+ }
+ if (ch < 0x110000) {
+ dest[0] = (ch>>18) | 0xF0;
+ dest[1] = ((ch>>12) & 0x3F) | 0x80;
+ dest[2] = ((ch>>6) & 0x3F) | 0x80;
+ dest[3] = (ch & 0x3F) | 0x80;
+ return 4;
+ }
+ return 0;
+}
+
+LtkTextManager *
+ltk_init_text(char *font_name)
+{
+ LtkTextManager *tm = malloc(sizeof(LtkTextManager));
+ if (!tm) {
+ (void)printf("Memory exhausted when trying to create text manager.");
+ exit(1);
+ }
+ tm->font_paths = kh_init(fontid);
+ tm->font_cache = kh_init(fontstruct);
+ tm->glyph_cache = kh_init(glyphcache);
+ tm->font_id_cur = 0;
+ ltk_load_default_font(tm, font_name);
+
+ return tm;
+}
+
+void
+ltk_destroy_text_manager(LtkTextManager *tm)
+{
+ int k;
+
+ kh_destroy(fontid, tm->font_paths);
+
+ for (k = kh_begin(tm->font_cache); k != kh_end(tm->font_cache); k++) {
+ if (kh_exist(tm->font_cache, k)) {
+ ltk_destroy_font(kh_value(tm->font_cache, k));
+ }
+ }
+ kh_destroy(fontstruct, tm->font_cache);
+
+ for (k = kh_begin(tm->glyph_cache); k != kh_end(tm->glyph_cache); k++) {
+ if (kh_exist(tm->glyph_cache, k)) {
+ ltk_destroy_glyph_cache(kh_value(tm->glyph_cache, k));
+ }
+ }
+ kh_destroy(glyphcache, tm->glyph_cache);
+
+ free(tm);
+}
+
+LtkGlyphInfo *
+ltk_create_glyph_info(LtkFont *font, unsigned int id, float scale)
+{
+ LtkGlyphInfo *glyph = malloc(sizeof(LtkGlyphInfo));
+ if (!glyph) {
+ (void)printf("Out of memory!\n");
+ exit(1);
+ }
+
+ glyph->id = id;
+ glyph->refs = 0;
+ glyph->alphamap = stbtt_GetGlyphBitmap(
+ &font->info, scale, scale, id, &glyph->w,
+ &glyph->h, &glyph->xoff, &glyph->yoff
+ );
+
+ return glyph;
+}
+
+void
+ltk_destroy_glyph_info(LtkGlyphInfo *gi)
+{
+ free(gi->alphamap);
+ free(gi);
+}
+
+LtkGlyphInfo *
+ltk_get_glyph_info(LtkFont *font, unsigned int id, float scale, khash_t(glyphinfo) *cache)
+{
+ int ret;
+ khint_t k;
+ LtkGlyphInfo *glyph;
+ k = kh_get(glyphinfo, cache, id);
+ if (k == kh_end(cache)) {
+ glyph = ltk_create_glyph_info(font, id, scale);
+ /* FIXME: error checking with ret */
+ k = kh_put(glyphinfo, cache, id, &ret);
+ kh_value(cache, k) = glyph;
+ } else {
+ glyph = kh_value(cache, k);
+ }
+
+ return glyph;
+}
+
+khint_t
+ltk_create_glyph_cache(LtkTextManager *tm, uint16_t font_id, uint16_t font_size)
+{
+ khash_t(glyphinfo) *cache = kh_init(glyphinfo);
+ int ret;
+ khint_t k;
+ /* I guess I can just ignore ret for now */
+ k = kh_put(glyphcache, tm->glyph_cache, font_id << 16 + font_size, &ret);
+ kh_value(tm->glyph_cache, k) = cache;
+
+ return k;
+}
+
+void
+ltk_destroy_glyph_cache(khash_t(glyphinfo) *cache)
+{
+ int k;
+ for (k = kh_begin(cache); k != kh_end(cache); k++) {
+ if (kh_exist(cache, k)) {
+ ltk_destroy_glyph_info(kh_value(cache, k));
+ }
+ }
+ kh_destroy(glyphinfo, cache);
+}
+
+void
+ltk_load_default_font(LtkTextManager *tm, char *name)
+{
+ FcPattern *match;
+ FcResult result;
+ char *file;
+ int index;
+ uint16_t font;
+
+ tm->fcpattern = FcNameParse(name);
+ FcPatternAddString(tm->fcpattern, FC_FONTFORMAT, "truetype");
+ FcConfigSubstitute(NULL, tm->fcpattern, FcMatchPattern);
+ FcDefaultSubstitute(tm->fcpattern);
+ match = FcFontMatch(NULL, tm->fcpattern, &result);
+
+ FcPatternGetString (match, FC_FILE, 0, (FcChar8 **) &file);
+ /* FIXME: Why is index never used? This is the index within the font file,
+ so it might be important, although I'm not sure if stb_truetype even
+ supports it */
+ FcPatternGetInteger (match, FC_INDEX, 0, &index);
+
+ tm->default_font = ltk_get_font(tm, file);
+
+ FcPatternDestroy (match);
+}
+
+LtkFont *
+ltk_create_font(char *path, uint16_t id)
+{
+ long len;
+ LtkFont *font = malloc(sizeof(LtkFont));
+ if (!font) {
+ (void)fprintf(stderr, "Out of memory!\n");
+ exit(1);
+ }
+ char *contents = ltk_read_file(path, &len);
+ if (!stbtt_InitFont(&font->info, contents, 0))
+ {
+ (void)fprintf(stderr, "Failed to load font %s\n", path);
+ exit(1);
+ }
+ /* FIXME: make use of the destroy function (last argument to hb_blob_create - see hb-blob.cc in harfbuzz source) */
+ hb_blob_t *blob = hb_blob_create(contents, len, HB_MEMORY_MODE_READONLY, NULL, NULL);
+ hb_face_t *face = hb_face_create(blob, 0);
+ /* FIXME: need to use destroy function in order for the original file data to be freed? */
+ hb_blob_destroy(blob);
+ font->hb = hb_font_create(face);
+ hb_face_destroy(face);
+ hb_ot_font_set_funcs(font->hb);
+ font->id = id;
+ font->refs = 0;
+
+ return font;
+}
+
+void
+ltk_destroy_font(LtkFont *font)
+{
+ free(font->info.data);
+ hb_font_destroy(font->hb);
+ free(font);
+}
+
+uint16_t
+ltk_load_font(LtkTextManager *tm, char *path)
+{
+ LtkFont *font = ltk_create_font(path, tm->font_id_cur++);
+ int ret;
+ khint_t k;
+ /* FIXME: does kh_destroy also free these copied strings properly? */
+ char *key = strdup(path);
+ k = kh_put(fontid, tm->font_paths, key, &ret);
+ kh_value(tm->font_paths, k) = font->id;
+ k = kh_put(fontstruct, tm->font_cache, (khint_t) font->id, &ret);
+ kh_value(tm->font_cache, k) = font;
+ k = kh_get(fontid, tm->font_paths, path);
+
+ return font->id;
+}
+
+uint16_t
+ltk_get_font(LtkTextManager *tm, char *path)
+{
+ int ret;
+ khint_t k;
+ uint16_t id;
+ k = kh_get(fontid, tm->font_paths, path);
+ if (k == kh_end(tm->font_paths)) {
+ id = ltk_load_font(tm, path);
+ } else {
+ id = kh_value(tm->font_paths, k);
+ }
+
+ return id;
+}
+
+void
+ltk_destroy_glyph(LtkGlyph *glyph, khash_t(glyphinfo) *cache)
+{
+ int k;
+ if (--glyph->info->refs < 1) {
+ k = kh_get(glyphinfo, cache, glyph->info->id);
+ kh_del(glyphinfo, cache, k);
+ ltk_destroy_glyph_info(glyph->info);
+ }
+ free(glyph);
+}
+
+#if 0
+/* based on http://codemadness.org/git/dwm-font/file/drw.c.html#l315 */
+XImage *
+ltk_render_text_line(
+ LtkTextLine *tl,
+ Display *dpy,
+ Window window,
+ GC gc,
+ Colormap colormap,
+ XColor fg,
+ XColor bg)
+{
+ XWindowAttributes attrs;
+ XGetWindowAttributes(dpy, window, &attrs);
+ int depth = attrs.depth;
+ XImage *img = XCreateImage(dpy, CopyFromParent, depth, ZPixmap, 0, NULL, tl->w, tl->h, 32, 0);
+ img->data = calloc(img->bytes_per_line, img->height);
+ XInitImage(img);
+ int b;
+ for (int i = 0; i < tl->h; i++) {
+ b = img->bytes_per_line * i;
+ for (int j = 0; j < tl->w; j++) {
+ img->data[b++] = bg.blue / 257;
+ img->data[b++] = bg.green / 257;
+ img->data[b++] = bg.red / 257;
+ b++;
+ }
+ }
+
+ LtkTextSegment *ts = tl->start_segment;
+ int x = 0;
+ int y = 0;
+ int is_hor = HB_DIRECTION_IS_HORIZONTAL(ts->dir);
+ do {
+ if (is_hor) {
+ y = tl->h - tl->y_max;
+ ltk_render_text_segment(ts, x + ts->start_x, y, img, fg);
+ x += ts->w;
+ } else {
+ x = tl->w - tl->x_max;
+ ltk_render_text_segment(ts, x, y + ts->start_y, img, fg);
+ y += ts->h;
+ }
+ } while (ts = ts->next);
+
+ return img;
+}
+
+void
+ltk_render_text_segment(
+ LtkTextSegment *ts,
+ unsigned int start_x,
+ unsigned int start_y,
+ XImage *img,
+ XColor fg)
+{
+ LtkGlyph *glyph = ts->start_glyph;
+ int x_cur = start_x;
+ int y_cur = start_y;
+ int x, y;
+ double a;
+ int b;
+ do {
+ x = x_cur + glyph->info->xoff + glyph->x_offset;
+ y = y_cur + glyph->info->yoff - glyph->y_offset;
+ for (int i = 0; i < glyph->info->h; i++) {
+ for (int j = 0; j < glyph->info->w; j++) {
+ b = (y + i) * img->bytes_per_line + (x + j) * 4;
+ a = glyph->info->alphamap[i * glyph->info->w + j] / 255.0;
+ img->data[b] = (fg.blue * a + (1 - a) * (uint16_t)img->data[b] * 257) / 257;
+ img->data[b + 1] = (fg.green * a + (1 - a) * (uint16_t)img->data[b + 1] * 257) / 257;
+ img->data[b + 2] = (fg.red * a + (1 - a) * (uint16_t)img->data[b + 2] * 257) / 257;
+ }
+ }
+ x_cur += glyph->x_advance;
+ y_cur -= glyph->y_advance;
+ } while (glyph = glyph->next);
+}
+#endif
DIR diff --git a/text-common.h b/text-common.h
t@@ -0,0 +1,125 @@
+/*
+ * This file is part of the Lumidify ToolKit (LTK)
+ * Copyright (c) 2017, 2018, 2020 lumidify <nobody@lumidify.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef _TEXT_COMMON_H_
+#define _TEXT_COMMON_H_
+
+/*
+Requires the following includes:
+<X11/Xlib.h>, <X11/Xutil.h>, "stb_truetype.h",
+"khash.h", <harfbuzz/hb.h>, <fribidi.h>,
+<fontconfig/fontconfig.h>
+*/
+
+typedef struct {
+ stbtt_fontinfo info;
+ hb_font_t *hb;
+ uint16_t id;
+ unsigned int refs;
+} LtkFont;
+
+/* Contains general info on glyphs that doesn't change regardless of the context */
+typedef struct _LtkGlyphInfo {
+ unsigned int id;
+ unsigned char *alphamap;
+ unsigned int w;
+ unsigned int h;
+ unsigned int xoff; /* x offset from origin to top left corner of glyph */
+ unsigned int yoff; /* y offset from origin to top left corner of glyph */
+ unsigned int refs;
+ /* FIXME: does refs need to be long? It could cause problems if a
+ program tries to cache/"keep alive" a lot of pages of text. */
+} LtkGlyphInfo;
+
+/* Contains glyph info specific to one run of text */
+typedef struct _LtkGlyph {
+ LtkGlyphInfo *info;
+ int x_offset; /* additional x offset given by harfbuzz */
+ int y_offset; /* additional y offset given by harfbuzz */
+ int x_advance;
+ int y_advance;
+ int x_abs;
+ int y_abs;
+ uint32_t cluster; /* index of char in original text - from harfbuzz */
+ struct _LtkGlyph *next;
+} LtkGlyph;
+
+/* Hash definitions */
+/* glyph id -> glyph info struct */
+KHASH_MAP_INIT_INT(glyphinfo, LtkGlyphInfo*)
+/* font path, size -> glyph cache hash */
+KHASH_MAP_INIT_INT(glyphcache, khash_t(glyphinfo)*)
+/* font path -> font id */
+KHASH_MAP_INIT_STR(fontid, uint16_t)
+/* font id -> font struct */
+KHASH_MAP_INIT_INT(fontstruct, LtkFont*)
+
+typedef struct LtkTextManager {
+ khash_t(fontid) *font_paths;
+ khash_t(fontstruct) *font_cache;
+ khash_t(glyphcache) *glyph_cache;
+ FcPattern *fcpattern;
+ uint16_t default_font;
+ uint16_t font_id_cur;
+} LtkTextManager;
+
+uint32_t u8_nextmemchar(const char *s, size_t *i);
+
+size_t u8_strlen(const char *s);
+
+size_t u8_wc_toutf8(char *dest, uint32_t ch);
+
+LtkTextManager *ltk_init_text(char *font_name);
+
+void ltk_destroy_text_manager(LtkTextManager *tm);
+
+LtkGlyphInfo *ltk_create_glyph_info(LtkFont *font, unsigned int id, float scale);
+
+void ltk_destroy_glyph_info(LtkGlyphInfo *gi);
+
+LtkGlyphInfo *ltk_get_glyph_info(LtkFont *font, unsigned int id, float scale, khash_t(glyphinfo) *cache);
+
+khint_t ltk_create_glyph_cache(LtkTextManager *tm, uint16_t font_id, uint16_t font_size);
+
+void ltk_destroy_glyph_cache(khash_t(glyphinfo) *cache);
+
+void ltk_load_default_font(LtkTextManager *tm, char *name);
+
+LtkFont *ltk_create_font(char *path, uint16_t id);
+
+void ltk_destroy_font(LtkFont *font);
+
+/* FIXME: need to figure out how exactly the whole font system is going to work, especially with default fonts, etc. */
+uint16_t ltk_load_font(LtkTextManager *tm, char *path);
+
+uint16_t ltk_get_font(LtkTextManager *tm, char *path);
+
+void ltk_destroy_glyph(LtkGlyph *glyph, khash_t(glyphinfo) *cache);
+
+/*
+XImage *ltk_render_text_line(LtkTextLine *tl, Display *dpy, Window window, GC gc, Colormap colormap, XColor fg, XColor bg);
+
+void ltk_render_text_segment(LtkTextSegment *ts, unsigned int start_x, unsigned int start_y, XImage *img, XColor fg);
+*/
+
+#endif /* _TEXT_COMMON_H_ */
DIR diff --git a/text-hb.c b/text-hb.c
t@@ -33,289 +33,12 @@
#include <fribidi.h>
#include <harfbuzz/hb.h>
#include <harfbuzz/hb-ot.h>
+#include "text-common.h"
#include "text-hb.h"
#include "ltk.h"
extern Ltk *ltk_global;
-/* These unicode routines are taken from
- * https://github.com/JeffBezanson/cutef8 */
-
-/* is c the start of a utf8 sequence? */
-#define isutf(c) (((c)&0xC0)!=0x80)
-
-static const uint32_t offsetsFromUTF8[6] = {
- 0x00000000UL, 0x00003080UL, 0x000E2080UL,
- 0x03C82080UL, 0xFA082080UL, 0x82082080UL
-};
-
-/* next character without NUL character terminator */
-uint32_t u8_nextmemchar(const char *s, size_t *i)
-{
- uint32_t ch = 0;
- size_t sz = 0;
- do {
- ch <<= 6;
- ch += (unsigned char)s[(*i)++];
- sz++;
- } while (!isutf(s[*i]));
- ch -= offsetsFromUTF8[sz-1];
-
- return ch;
-}
-
-/* number of characters in NUL-terminated string */
-size_t u8_strlen(const char *s)
-{
- size_t count = 0;
- size_t i = 0, lasti;
-
- while (1) {
- lasti = i;
- while (s[i] > 0)
- i++;
- count += (i-lasti);
- if (s[i++]==0) break;
- (void)(isutf(s[++i]) || isutf(s[++i]) || ++i);
- count++;
- }
- return count;
-}
-
-size_t u8_wc_toutf8(char *dest, uint32_t ch)
-{
- if (ch < 0x80) {
- dest[0] = (char)ch;
- return 1;
- }
- if (ch < 0x800) {
- dest[0] = (ch>>6) | 0xC0;
- dest[1] = (ch & 0x3F) | 0x80;
- return 2;
- }
- if (ch < 0x10000) {
- dest[0] = (ch>>12) | 0xE0;
- dest[1] = ((ch>>6) & 0x3F) | 0x80;
- dest[2] = (ch & 0x3F) | 0x80;
- return 3;
- }
- if (ch < 0x110000) {
- dest[0] = (ch>>18) | 0xF0;
- dest[1] = ((ch>>12) & 0x3F) | 0x80;
- dest[2] = ((ch>>6) & 0x3F) | 0x80;
- dest[3] = (ch & 0x3F) | 0x80;
- return 4;
- }
- return 0;
-}
-
-LtkTextManager *
-ltk_init_text(char *font_name)
-{
- LtkTextManager *tm = malloc(sizeof(LtkTextManager));
- if (!tm) {
- (void)printf("Memory exhausted when trying to create text manager.");
- exit(1);
- }
- tm->font_paths = kh_init(fontid);
- tm->font_cache = kh_init(fontstruct);
- tm->glyph_cache = kh_init(glyphcache);
- tm->font_id_cur = 0;
- ltk_load_default_font(tm, font_name);
-
- return tm;
-}
-
-void
-ltk_destroy_text_manager(LtkTextManager *tm)
-{
- int k;
-
- kh_destroy(fontid, tm->font_paths);
-
- for (k = kh_begin(tm->font_cache); k != kh_end(tm->font_cache); k++) {
- if (kh_exist(tm->font_cache, k)) {
- ltk_destroy_font(kh_value(tm->font_cache, k));
- }
- }
- kh_destroy(fontstruct, tm->font_cache);
-
- for (k = kh_begin(tm->glyph_cache); k != kh_end(tm->glyph_cache); k++) {
- if (kh_exist(tm->glyph_cache, k)) {
- ltk_destroy_glyph_cache(kh_value(tm->glyph_cache, k));
- }
- }
- kh_destroy(glyphcache, tm->glyph_cache);
-
- free(tm);
-}
-
-LtkGlyphInfo *
-ltk_create_glyph_info(LtkFont *font, unsigned int id, float scale)
-{
- LtkGlyphInfo *glyph = malloc(sizeof(LtkGlyphInfo));
- if (!glyph) {
- (void)printf("Out of memory!\n");
- exit(1);
- }
-
- glyph->id = id;
- glyph->refs = 0;
- glyph->alphamap = stbtt_GetGlyphBitmap(
- &font->info, scale, scale, id, &glyph->w,
- &glyph->h, &glyph->xoff, &glyph->yoff
- );
-
- return glyph;
-}
-
-void
-ltk_destroy_glyph_info(LtkGlyphInfo *gi)
-{
- free(gi->alphamap);
- free(gi);
-}
-
-LtkGlyphInfo *
-ltk_get_glyph_info(LtkFont *font, unsigned int id, float scale, khash_t(glyphinfo) *cache)
-{
- int ret;
- khint_t k;
- LtkGlyphInfo *glyph;
- k = kh_get(glyphinfo, cache, id);
- if (k == kh_end(cache)) {
- glyph = ltk_create_glyph_info(font, id, scale);
- /* FIXME: error checking with ret */
- k = kh_put(glyphinfo, cache, id, &ret);
- kh_value(cache, k) = glyph;
- } else {
- glyph = kh_value(cache, k);
- }
-
- return glyph;
-}
-
-khint_t
-ltk_create_glyph_cache(LtkTextManager *tm, uint16_t font_id, uint16_t font_size)
-{
- khash_t(glyphinfo) *cache = kh_init(glyphinfo);
- int ret;
- khint_t k;
- /* I guess I can just ignore ret for now */
- k = kh_put(glyphcache, tm->glyph_cache, font_id << 16 + font_size, &ret);
- kh_value(tm->glyph_cache, k) = cache;
-
- return k;
-}
-
-void
-ltk_destroy_glyph_cache(khash_t(glyphinfo) *cache)
-{
- int k;
- for (k = kh_begin(cache); k != kh_end(cache); k++) {
- if (kh_exist(cache, k)) {
- ltk_destroy_glyph_info(kh_value(cache, k));
- }
- }
- kh_destroy(glyphinfo, cache);
-}
-
-void
-ltk_load_default_font(LtkTextManager *tm, char *name)
-{
- FcPattern *match;
- FcResult result;
- char *file;
- int index;
- uint16_t font;
-
- tm->fcpattern = FcNameParse(name);
- FcPatternAddString(tm->fcpattern, FC_FONTFORMAT, "truetype");
- FcConfigSubstitute(NULL, tm->fcpattern, FcMatchPattern);
- FcDefaultSubstitute(tm->fcpattern);
- match = FcFontMatch(NULL, tm->fcpattern, &result);
-
- FcPatternGetString (match, FC_FILE, 0, (FcChar8 **) &file);
- /* FIXME: Why is index never used? This is the index within the font file,
- so it might be important, although I'm not sure if stb_truetype even
- supports it */
- FcPatternGetInteger (match, FC_INDEX, 0, &index);
-
- tm->default_font = ltk_get_font(tm, file);
-
- FcPatternDestroy (match);
-}
-
-LtkFont *
-ltk_create_font(char *path, uint16_t id)
-{
- long len;
- LtkFont *font = malloc(sizeof(LtkFont));
- if (!font) {
- (void)fprintf(stderr, "Out of memory!\n");
- exit(1);
- }
- char *contents = ltk_read_file(path, &len);
- if (!stbtt_InitFont(&font->info, contents, 0))
- {
- (void)fprintf(stderr, "Failed to load font %s\n", path);
- exit(1);
- }
- /* FIXME: make use of the destroy function (last argument to hb_blob_create - see hb-blob.cc in harfbuzz source) */
- hb_blob_t *blob = hb_blob_create(contents, len, HB_MEMORY_MODE_READONLY, NULL, NULL);
- hb_face_t *face = hb_face_create(blob, 0);
- /* FIXME: need to use destroy function in order for the original file data to be freed? */
- hb_blob_destroy(blob);
- font->hb = hb_font_create(face);
- hb_face_destroy(face);
- hb_ot_font_set_funcs(font->hb);
- font->id = id;
- font->refs = 0;
-
- return font;
-}
-
-void
-ltk_destroy_font(LtkFont *font)
-{
- free(font->info.data);
- hb_font_destroy(font->hb);
- free(font);
-}
-
-uint16_t
-ltk_load_font(LtkTextManager *tm, char *path)
-{
- LtkFont *font = ltk_create_font(path, tm->font_id_cur++);
- int ret;
- khint_t k;
- /* FIXME: does kh_destroy also free these copied strings properly? */
- char *key = strdup(path);
- k = kh_put(fontid, tm->font_paths, key, &ret);
- kh_value(tm->font_paths, k) = font->id;
- k = kh_put(fontstruct, tm->font_cache, (khint_t) font->id, &ret);
- kh_value(tm->font_cache, k) = font;
- k = kh_get(fontid, tm->font_paths, path);
-
- return font->id;
-}
-
-uint16_t
-ltk_get_font(LtkTextManager *tm, char *path)
-{
- int ret;
- khint_t k;
- uint16_t id;
- k = kh_get(fontid, tm->font_paths, path);
- if (k == kh_end(tm->font_paths)) {
- id = ltk_load_font(tm, path);
- } else {
- id = kh_value(tm->font_paths, k);
- }
-
- return id;
-}
-
/* FIXME: allow to either use fribidi for basic shaping and don't use harfbuzz then,
or just use harfbuzz (then fribidi doesn't need to do any shaping) */
LtkTextLine *
t@@ -586,18 +309,6 @@ ltk_create_text_segment(LtkTextManager *tm, uint32_t *text, unsigned int len, ui
}
void
-ltk_destroy_glyph(LtkGlyph *glyph, khash_t(glyphinfo) *cache)
-{
- int k;
- if (--glyph->info->refs < 1) {
- k = kh_get(glyphinfo, cache, glyph->info->id);
- kh_del(glyphinfo, cache, k);
- ltk_destroy_glyph_info(glyph->info);
- }
- free(glyph);
-}
-
-void
ltk_destroy_text_segment(LtkTextSegment *ts)
{
LtkGlyph *glyph, *next_glyph;
DIR diff --git a/text-hb.h b/text-hb.h
t@@ -28,42 +28,9 @@
Requires the following includes:
<X11/Xlib.h>, <X11/Xutil.h>, "stb_truetype.h",
"khash.h", <harfbuzz/hb.h>, <fribidi.h>,
-<fontconfig/fontconfig.h>
+<fontconfig/fontconfig.h>, "text-common.h"
*/
-typedef struct {
- stbtt_fontinfo info;
- hb_font_t *hb;
- uint16_t id;
- unsigned int refs;
-} LtkFont;
-
-/* Contains general info on glyphs that doesn't change regardless of the context */
-typedef struct _LtkGlyphInfo {
- unsigned int id;
- unsigned char *alphamap;
- unsigned int w;
- unsigned int h;
- unsigned int xoff; /* x offset from origin to top left corner of glyph */
- unsigned int yoff; /* y offset from origin to top left corner of glyph */
- unsigned int refs;
- /* FIXME: does refs need to be long? It could cause problems if a
- program tries to cache/"keep alive" a lot of pages of text. */
-} LtkGlyphInfo;
-
-/* Contains glyph info specific to one run of text */
-typedef struct _LtkGlyph {
- LtkGlyphInfo *info;
- int x_offset; /* additional x offset given by harfbuzz */
- int y_offset; /* additional y offset given by harfbuzz */
- int x_advance;
- int y_advance;
- int x_abs;
- int y_abs;
- uint32_t cluster; /* index of char in original text - from harfbuzz */
- struct _LtkGlyph *next;
-} LtkGlyph;
-
/* Single segment of text with same font */
typedef struct LtkTextSegment {
uint16_t font_id;
t@@ -94,50 +61,6 @@ typedef struct {
LtkTextSegment *start_segment;
} LtkTextLine;
-/* Hash definitions */
-/* glyph id -> glyph info struct */
-KHASH_MAP_INIT_INT(glyphinfo, LtkGlyphInfo*)
-/* font path, size -> glyph cache hash */
-KHASH_MAP_INIT_INT(glyphcache, khash_t(glyphinfo)*)
-/* font path -> font id */
-KHASH_MAP_INIT_STR(fontid, uint16_t)
-/* font id -> font struct */
-KHASH_MAP_INIT_INT(fontstruct, LtkFont*)
-
-typedef struct LtkTextManager {
- khash_t(fontid) *font_paths;
- khash_t(fontstruct) *font_cache;
- khash_t(glyphcache) *glyph_cache;
- FcPattern *fcpattern;
- uint16_t default_font;
- uint16_t font_id_cur;
-} LtkTextManager;
-
-LtkTextManager *ltk_init_text(char *font_name);
-
-void ltk_destroy_text_manager(LtkTextManager *tm);
-
-LtkGlyphInfo *ltk_create_glyph_info(LtkFont *font, unsigned int id, float scale);
-
-void ltk_destroy_glyph_info(LtkGlyphInfo *gi);
-
-LtkGlyphInfo *ltk_get_glyph_info(LtkFont *font, unsigned int id, float scale, khash_t(glyphinfo) *cache);
-
-khint_t ltk_create_glyph_cache(LtkTextManager *tm, uint16_t font_id, uint16_t font_size);
-
-void ltk_destroy_glyph_cache(khash_t(glyphinfo) *cache);
-
-void ltk_load_default_font(LtkTextManager *tm, char *name);
-
-LtkFont *ltk_create_font(char *path, uint16_t id);
-
-void ltk_destroy_font(LtkFont *font);
-
-/* FIXME: need to figure out how exactly the whole font system is going to work, especially with default fonts, etc. */
-uint16_t ltk_load_font(LtkTextManager *tm, char *path);
-
-uint16_t ltk_get_font(LtkTextManager *tm, char *path);
-
/* TODO: different sizes, colors, styles, etc. */
LtkTextLine *ltk_create_text_line(LtkTextManager *tm, char *text, uint16_t fontid, uint16_t size);
t@@ -145,8 +68,6 @@ LtkTextLine *ltk_create_text_line(LtkTextManager *tm, char *text, uint16_t fonti
-> in case I want to get rid of uint_16_t, etc. */
LtkTextSegment *ltk_create_text_segment(LtkTextManager *tm, uint32_t *text, unsigned int text_len, uint16_t fontid, uint16_t size, hb_script_t script);
-void ltk_destroy_glyph(LtkGlyph *glyph, khash_t(glyphinfo) *cache);
-
void ltk_destroy_text_segment(LtkTextSegment *ts);
XImage *ltk_render_text_line(LtkTextLine *tl, Display *dpy, Window window, GC gc, Colormap colormap, XColor fg, XColor bg);
t@@ -154,4 +75,4 @@ XImage *ltk_render_text_line(LtkTextLine *tl, Display *dpy, Window window, GC gc
void ltk_render_text_segment(LtkTextSegment *ts, unsigned int start_x, unsigned int start_y, XImage *img, XColor fg);
-#endif
+#endif /* _TEXT_HB_H_ */