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-rw-r--r--framebuffer/font_internal.c491
1 files changed, 0 insertions, 491 deletions
diff --git a/framebuffer/font_internal.c b/framebuffer/font_internal.c
deleted file mode 100644
index 7578e641a..000000000
--- a/framebuffer/font_internal.c
+++ /dev/null
@@ -1,491 +0,0 @@
-/*
- * Copyright 2005 James Bursa <bursa@users.sourceforge.net>
- * 2008 Vincent Sanders <vince@simtec.co.uk>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * NetSurf is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * NetSurf is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <inttypes.h>
-#include <string.h>
-#include <assert.h>
-#include <stdlib.h>
-
-#include "utils/nsoption.h"
-#include "utils/utf8.h"
-#include "desktop/gui_utf8.h"
-#include "desktop/gui_layout.h"
-
-#include "framebuffer/gui.h"
-#include "framebuffer/font.h"
-
-#include <font-ns-sans.h>
-
-#define GLYPH_LEN 16
-
-uint8_t code_point[GLYPH_LEN];
-uint8_t glyph_x2[GLYPH_LEN * 4];
-
-#define SEVEN_SET ((1 << 0) | (1 << 1) | (1 << 2) | (1 << 3) | \
- (1 << 4) | (1 << 5) | (1 << 6))
-
-#define THREE_SSS ((1 << 0) | (1 << 1) | (1 << 2))
-#define THREE_S_S ((1 << 0) | (1 << 2))
-#define THREE__SS ((1 << 0) | (1 << 1) )
-#define THREE_SS_ ( (1 << 1) | (1 << 2))
-#define THREE_S__ (1 << 2)
-#define THREE__S_ (1 << 1)
-#define THREE___S (1 << 0)
-
-uint8_t frag[16][5] = {
- { THREE_SSS,
- THREE_S_S,
- THREE_S_S,
- THREE_S_S,
- THREE_SSS },
-
- { THREE__S_,
- THREE_SS_,
- THREE__S_,
- THREE__S_,
- THREE_SSS },
-
- { THREE_SS_,
- THREE___S,
- THREE__S_,
- THREE_S__,
- THREE_SSS },
-
- { THREE_SS_,
- THREE___S,
- THREE_SS_,
- THREE___S,
- THREE_SS_ },
-
- { THREE_S_S,
- THREE_S_S,
- THREE_SSS,
- THREE___S,
- THREE___S },
-
- { THREE_SSS,
- THREE_S__,
- THREE_SSS,
- THREE___S,
- THREE_SSS },
-
- { THREE__SS,
- THREE_S__,
- THREE_SSS,
- THREE_S_S,
- THREE_SSS },
-
- { THREE_SSS,
- THREE___S,
- THREE__S_,
- THREE__S_,
- THREE__S_ },
-
- { THREE_SSS,
- THREE_S_S,
- THREE_SSS,
- THREE_S_S,
- THREE_SSS },
-
- { THREE_SSS,
- THREE_S_S,
- THREE_SSS,
- THREE___S,
- THREE___S },
-
- { THREE__S_,
- THREE_S_S,
- THREE_SSS,
- THREE_S_S,
- THREE_S_S },
-
- { THREE_SS_,
- THREE_S_S,
- THREE_SS_,
- THREE_S_S,
- THREE_SS_ },
-
- { THREE__S_,
- THREE_S_S,
- THREE_S__,
- THREE_S_S,
- THREE__S_ },
-
- { THREE_SS_,
- THREE_S_S,
- THREE_S_S,
- THREE_S_S,
- THREE_SS_ },
-
- { THREE_SSS,
- THREE_S__,
- THREE_SS_,
- THREE_S__,
- THREE_SSS },
-
- { THREE_SSS,
- THREE_S__,
- THREE_SS_,
- THREE_S__,
- THREE_S__ }
-};
-
-static uint8_t * get_codepoint(uint32_t id, bool italic)
-{
- int shift = 0;
- int l;
- int r;
-
- if (!italic)
- shift = 1;
-
- l = (id >> 12);
- r = 0xf & (id >> 8);
-
- code_point[ 0] = SEVEN_SET << shift;
-
- code_point[ 2] = (frag[l][0] << (4 + shift)) | (frag[r][0] << shift);
- code_point[ 3] = (frag[l][1] << (4 + shift)) | (frag[r][1] << shift);
- code_point[ 4] = (frag[l][2] << (4 + shift)) | (frag[r][2] << shift);
- code_point[ 5] = (frag[l][3] << (4 + shift)) | (frag[r][3] << shift);
- code_point[ 6] = (frag[l][4] << (4 + shift)) | (frag[r][4] << shift);
-
- shift = 1;
-
- l = 0xf & (id >> 4);
- r = 0xf & id;
-
- code_point[ 8] = (frag[l][0] << (4 + shift)) | (frag[r][0] << shift);
- code_point[ 9] = (frag[l][1] << (4 + shift)) | (frag[r][1] << shift);
- code_point[10] = (frag[l][2] << (4 + shift)) | (frag[r][2] << shift);
- code_point[11] = (frag[l][3] << (4 + shift)) | (frag[r][3] << shift);
- code_point[12] = (frag[l][4] << (4 + shift)) | (frag[r][4] << shift);
-
- code_point[14] = SEVEN_SET << shift;
-
- return (uint8_t *)code_point;
-}
-
-
-bool fb_font_init(void)
-{
- return true;
-}
-
-bool fb_font_finalise(void)
-{
- return true;
-}
-
-enum fb_font_style
-fb_get_font_style(const plot_font_style_t *fstyle)
-{
- enum fb_font_style style = FB_REGULAR;
-
- if (fstyle->weight >= 700)
- style |= FB_BOLD;
- if ((fstyle->flags & FONTF_ITALIC) || (fstyle->flags & FONTF_OBLIQUE))
- style |= FB_ITALIC;
-
- return style;
-}
-
-int
-fb_get_font_size(const plot_font_style_t *fstyle)
-{
- int size = fstyle->size * 10 /
- (((nsoption_int(font_min_size) * 3 +
- nsoption_int(font_size)) / 4) * FONT_SIZE_SCALE);
- if (size > 2)
- size = 2;
- else if (size <= 0)
- size = 1;
-
- return size;
-}
-
-/** Lookup table to scale 4 bits to 8 bits, so e.g. 0101 --> 00110011 */
-const uint8_t glyph_lut[16] = {
- 0x00, 0x03, 0x0c, 0x0f,
- 0x30, 0x33, 0x3c, 0x3f,
- 0xc0, 0xc3, 0xcc, 0xcf,
- 0xf0, 0xf3, 0xfc, 0xff
-};
-
-static const uint8_t *
-glyph_scale_2(const uint8_t *glyph_data)
-{
- const uint8_t *glyph_max = glyph_data + GLYPH_LEN;
- uint8_t *pos = glyph_x2;
-
- do {
- *pos++ = glyph_lut[*glyph_data >> 4];
- *pos++ = glyph_lut[*glyph_data & 0xf];
- *pos++ = glyph_lut[*glyph_data >> 4];
- *pos++ = glyph_lut[*glyph_data & 0xf];
- } while (++glyph_data < glyph_max);
-
- return glyph_x2;
-}
-
-const uint8_t *
-fb_get_glyph(uint32_t ucs4, enum fb_font_style style, int scale)
-{
- const uint8_t *glyph_data;
- unsigned int section;
- unsigned int offset;
- uint16_t g_offset;
-
- /* Internal font has no glyphs beyond U+FFFF and there isn't
- * space to render a >4 digit codepoint; just show replacement
- * character. */
- if (ucs4 > 0xffff)
- ucs4 = 0xfffd;
-
- switch (style) {
- case FB_BOLD_ITALIC:
- section = fb_bold_italic_section_table[ucs4 / 256];
- if (section != 0 || ucs4 / 256 == 0) {
- offset = section * 256 + (ucs4 & 0xff);
- g_offset = fb_bold_italic_sections[offset] * 16;
- if (g_offset != 0) {
- glyph_data = &font_glyph_data[g_offset];
- break;
- }
- }
- case FB_BOLD:
- section = fb_bold_section_table[ucs4 / 256];
- if (section != 0 || ucs4 / 256 == 0) {
- offset = section * 256 + (ucs4 & 0xff);
- g_offset = fb_bold_sections[offset] * 16;
- if (g_offset != 0) {
- glyph_data = &font_glyph_data[g_offset];
- break;
- }
- }
- case FB_ITALIC:
- section = fb_italic_section_table[ucs4 / 256];
- if (section != 0 || ucs4 / 256 == 0) {
- offset = section * 256 + (ucs4 & 0xff);
- g_offset = fb_italic_sections[offset] * 16;
- if (g_offset != 0) {
- glyph_data = &font_glyph_data[g_offset];
- break;
- }
- }
- case FB_REGULAR:
- section = fb_regular_section_table[ucs4 / 256];
- if (section != 0 || ucs4 / 256 == 0) {
- offset = section * 256 + (ucs4 & 0xff);
- g_offset = fb_regular_sections[offset] * 16;
- if (g_offset != 0) {
- glyph_data = &font_glyph_data[g_offset];
- break;
- }
- }
- default:
- glyph_data = get_codepoint(ucs4, style & FB_ITALIC);
- break;
- }
-
- switch (scale) {
- case 1:
- break;
- case 2:
- glyph_data = glyph_scale_2(glyph_data);
- break;
- default:
- assert(scale >= 1 && scale <= 2);
- break;
- }
-
- return glyph_data;
-}
-
-static nserror utf8_to_local(const char *string,
- size_t len,
- char **result)
-{
- return utf8_to_enc(string, "CP1252", len, result);
-
-}
-
-static nserror utf8_from_local(const char *string,
- size_t len,
- char **result)
-{
- *result = malloc(len + 1);
- if (*result == NULL) {
- return NSERROR_NOMEM;
- }
-
- memcpy(*result, string, len);
-
- (*result)[len] = '\0';
-
- return NSERROR_OK;
-}
-
-
-/* exported interface documented in framebuffer/freetype_font.h */
-nserror
-fb_font_width(const plot_font_style_t *fstyle,
- const char *string,
- size_t length,
- int *width)
-{
- size_t nxtchr = 0;
-
- *width = 0;
- while (nxtchr < length) {
- uint32_t ucs4;
- ucs4 = utf8_to_ucs4(string + nxtchr, length - nxtchr);
- if (codepoint_displayable(ucs4)) {
- *width += FB_FONT_WIDTH;
- }
-
- nxtchr = utf8_next(string, length, nxtchr);
- }
-
- *width *= fb_get_font_size(fstyle);
- return true;
-}
-
-
-/* exported interface documented in framebuffer/freetype_font.h */
-nserror
-fb_font_position(const plot_font_style_t *fstyle,
- const char *string,
- size_t length,
- int x,
- size_t *char_offset,
- int *actual_x)
-{
- const int width = fb_get_font_size(fstyle) * FB_FONT_WIDTH;
- size_t nxtchr = 0;
- int x_pos = 0;
-
- while (nxtchr < length) {
- uint32_t ucs4;
- if (abs(x_pos - x) <= (width / 2))
- break;
-
- ucs4 = utf8_to_ucs4(string + nxtchr, length - nxtchr);
- if (codepoint_displayable(ucs4)) {
- x_pos += width;
- }
-
- nxtchr = utf8_next(string, length, nxtchr);
- }
-
- *actual_x = x_pos;
-
- *char_offset = nxtchr;
- return true;
-}
-
-
-/**
- * Find where to split a string to make it fit a width.
- *
- * \param fstyle style for this text
- * \param string UTF-8 string to measure
- * \param length length of string, in bytes
- * \param x width available
- * \param char_offset updated to offset in string of actual_x, [1..length]
- * \param actual_x updated to x coordinate of character closest to x
- * \return true on success, false on error and error reported
- *
- * On exit, char_offset indicates first character after split point.
- *
- * Note: char_offset of 0 should never be returned.
- *
- * Returns:
- * char_offset giving split point closest to x, where actual_x <= x
- * else
- * char_offset giving split point closest to x, where actual_x > x
- *
- * Returning char_offset == length means no split possible
- */
-static nserror
-fb_font_split(const plot_font_style_t *fstyle,
- const char *string,
- size_t length,
- int x,
- size_t *char_offset,
- int *actual_x)
-{
- const int width = fb_get_font_size(fstyle) * FB_FONT_WIDTH;
- size_t nxtchr = 0;
- int last_space_x = 0;
- int last_space_idx = 0;
-
- *actual_x = 0;
- while (nxtchr < length) {
- uint32_t ucs4;
-
- if (string[nxtchr] == ' ') {
- last_space_x = *actual_x;
- last_space_idx = nxtchr;
- }
-
- ucs4 = utf8_to_ucs4(string + nxtchr, length - nxtchr);
- if (codepoint_displayable(ucs4)) {
- *actual_x += width;
- }
-
- if (*actual_x > x && last_space_idx != 0) {
- /* string has exceeded available width and we've
- * found a space; return previous space */
- *actual_x = last_space_x;
- *char_offset = last_space_idx;
- return true;
- }
-
- nxtchr = utf8_next(string, length, nxtchr);
- }
-
- *char_offset = nxtchr;
-
- return true;
-}
-
-
-static struct gui_layout_table layout_table = {
- .width = fb_font_width,
- .position = fb_font_position,
- .split = fb_font_split,
-};
-
-struct gui_layout_table *framebuffer_layout_table = &layout_table;
-
-
-static struct gui_utf8_table utf8_table = {
- .utf8_to_local = utf8_to_local,
- .local_to_utf8 = utf8_from_local,
-};
-
-struct gui_utf8_table *framebuffer_utf8_table = &utf8_table;
-
-
-/*
- * Local Variables:
- * c-basic-offset:8
- * End:
- */
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