mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-12-29 15:29:42 +03:00
43029944ae
svn path=/trunk/netsurf/; revision=10885
210 lines
5.7 KiB
C
210 lines
5.7 KiB
C
/*
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* Copyright 2005 James Bursa <bursa@users.sourceforge.net>
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* Copyright 2008 Vincent Sanders <vince@simtec.co.uk>
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* Copyright 2009 Mark Benjamin <netsurf-browser.org.MarkBenjamin@dfgh.net>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* NetSurf is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <inttypes.h>
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#include <assert.h>
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#include <windows.h>
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#include "css/css.h"
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#include "render/font.h"
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#include "desktop/options.h"
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#include "utils/utf8.h"
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#include "windows/font.h"
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#include "windows/gui.h"
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#include "windows/plot.h"
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utf8_convert_ret utf8_to_font_encoding(const struct font_desc* font,
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const char *string,
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size_t len,
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char **result)
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{
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return utf8_to_enc(string, font->encoding, len, result);
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}
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utf8_convert_ret utf8_to_local_encoding(const char *string,
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size_t len,
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char **result)
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{
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return utf8_to_enc(string, "UCS-2", len, result);
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}
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HFONT get_font(const plot_font_style_t *style)
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{
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char *face = NULL;
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DWORD family;
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switch(style->family) {
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case PLOT_FONT_FAMILY_SERIF:
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face = strdup(option_font_serif);
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family = FF_ROMAN | DEFAULT_PITCH;
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break;
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case PLOT_FONT_FAMILY_MONOSPACE:
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face = strdup(option_font_mono);
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family = FF_MODERN | DEFAULT_PITCH;
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break;
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case PLOT_FONT_FAMILY_CURSIVE:
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face = strdup(option_font_cursive);
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family = FF_SCRIPT | DEFAULT_PITCH;
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break;
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case PLOT_FONT_FAMILY_FANTASY:
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face = strdup(option_font_fantasy);
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family = FF_DECORATIVE | DEFAULT_PITCH;
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break;
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case PLOT_FONT_FAMILY_SANS_SERIF:
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default:
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face = strdup(option_font_sans);
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family = FF_SWISS | DEFAULT_PITCH;
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break;
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}
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int nHeight = -10;
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HDC hdc = GetDC(font_hwnd);
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nHeight = -MulDiv(style->size, GetDeviceCaps(hdc, LOGPIXELSY), 72 * FONT_SIZE_SCALE);
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ReleaseDC(font_hwnd, hdc);
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HFONT font = CreateFont(
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nHeight, /* height */
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0, /* width */
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0, /* escapement*/
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0, /* orientation */
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style->weight,
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(style->flags & FONTF_ITALIC) ? TRUE : FALSE,
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FALSE, /* underline */
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FALSE, /* strike */
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DEFAULT_CHARSET, /* for locale */
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OUT_DEFAULT_PRECIS, /* general 'best match' */
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CLIP_DEFAULT_PRECIS,
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DEFAULT_QUALITY,
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family,
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face /* name of font face */
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);
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if (face != NULL)
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free(face);
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if (font == NULL) {
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if (style->family == PLOT_FONT_FAMILY_MONOSPACE)
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font = (HFONT) GetStockObject(ANSI_FIXED_FONT);
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else
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font = (HFONT) GetStockObject(ANSI_VAR_FONT);
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}
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if (font == NULL)
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font = (HFONT) GetStockObject(SYSTEM_FONT);
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return font;
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}
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static bool nsfont_width(const plot_font_style_t *style,
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const char *string, size_t length,
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int *width)
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{
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HDC hdc = GetDC(NULL);
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HFONT font = get_font(style);
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HFONT fontbak = SelectObject(hdc, font);
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SIZE s;
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if (length < 8192) { /* win 95/98/ME */
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/* may well need to convert utf-8 to lpctstr */
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GetTextExtentPoint32(hdc, string,
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utf8_bounded_length(string, length), &s);
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*width = s.cx;
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font = SelectObject(hdc, fontbak);
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DeleteObject(font);
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ReleaseDC(NULL, hdc);
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return true;
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}
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font = SelectObject(hdc, fontbak);
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DeleteObject(font);
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ReleaseDC(NULL, hdc);
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return false;
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}
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/**
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* Find the position in a string where an x coordinate falls.
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*
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* \param style css_style for this text, with style->font_size.size ==
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* CSS_FONT_SIZE_LENGTH
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* \param string UTF-8 string to measure
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* \param length length of string
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* \param x x coordinate to search for
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* \param char_offset updated to offset in string of actual_x, [0..length]
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* \param actual_x updated to x coordinate of character closest to x
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* \return true on success, false on error and error reported
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*/
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static bool nsfont_position_in_string(const plot_font_style_t *style,
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const char *string, size_t length,
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int x, size_t *char_offset, int *actual_x)
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{
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HDC hdc = GetDC(NULL);
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HFONT font = get_font(style);
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HFONT fontbak = SelectObject(hdc, font);
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SIZE s;
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int offset;
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GetTextExtentExPoint(hdc, string, length, x, &offset, NULL, &s);
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*char_offset = (size_t)offset;
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nsfont_width(style, string, *char_offset, actual_x);
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font = SelectObject(hdc, fontbak);
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DeleteObject(font);
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ReleaseDC(NULL, hdc);
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return true;
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}
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/**
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* Find where to split a string to make it fit a width.
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*
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* \param style css_style for this text, with style->font_size.size ==
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* CSS_FONT_SIZE_LENGTH
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* \param string UTF-8 string to measure
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* \param length length of string
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* \param x width available
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* \param char_offset updated to offset in string of actual_x, [0..length]
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* \param actual_x updated to x coordinate of character closest to x
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* \return true on success, false on error and error reported
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*
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* On exit, [char_offset == 0 ||
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* string[char_offset] == ' ' ||
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* char_offset == length]
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*/
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static bool nsfont_split(const plot_font_style_t *style,
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const char *string, size_t length,
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int x, size_t *char_offset, int *actual_x)
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{
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nsfont_position_in_string(style, string, length, x, char_offset,
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actual_x);
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if (*char_offset == length) {
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printf("%s %d\n",string, (int)(*char_offset));
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return true;
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}
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while ((string[*char_offset] != ' ') && (*char_offset > 0))
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(*char_offset)--;
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nsfont_position_in_string(style, string, *char_offset, x, char_offset,
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actual_x);
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return true;
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}
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const struct font_functions nsfont = {
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nsfont_width,
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nsfont_position_in_string,
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nsfont_split
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};
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