mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-12-25 05:27:00 +03:00
ea5e026f7d
svn path=/trunk/netsurf/; revision=5075
221 lines
5.3 KiB
C
221 lines
5.3 KiB
C
/*
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* Copyright 2005 James Bursa <bursa@users.sourceforge.net>
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* 2008 Chris Young <chris@unsatisfactorysoftware.co.uk>
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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 <assert.h>
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#include "css/css.h"
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#include "render/font.h"
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#include "amiga/gui.h"
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#include <proto/graphics.h>
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#include <proto/diskfont.h>
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#include <graphics/rpattr.h>
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#include "amiga/font.h"
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#include "desktop/options.h"
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static bool nsfont_width(const struct css_style *style,
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const char *string, size_t length,
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int *width);
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static bool nsfont_position_in_string(const struct css_style *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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static bool nsfont_split(const struct css_style *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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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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bool nsfont_width(const struct css_style *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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ami_open_font(style);
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*width = TextLength(currp,string,length);
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return true;
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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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bool nsfont_position_in_string(const struct css_style *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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struct TextExtent extent;
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ami_open_font(style);
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*char_offset = TextFit(currp,string,length,
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&extent,NULL,1,x,32767);
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*actual_x = extent.te_Extent.MaxX;
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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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bool nsfont_split(const struct css_style *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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struct TextExtent extent;
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ULONG co;
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char *charp;
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ami_open_font(style);
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co = TextFit(currp,string,length,
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&extent,NULL,1,x,32767);
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charp = string+co;
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while((*charp != ' ') && (charp >= string))
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{
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charp--;
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co--;
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}
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*char_offset = co;
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*actual_x = TextLength(currp,string,co);
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return true;
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}
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void ami_open_font(struct css_style *style)
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{
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struct TextFont *tfont;
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struct TTextAttr tattr;
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struct TagItem tattrtags[2];
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switch(style->font_family)
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{
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case CSS_FONT_FAMILY_SANS_SERIF:
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tattr.tta_Name = option_font_sans;
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break;
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case CSS_FONT_FAMILY_SERIF:
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tattr.tta_Name = option_font_serif;
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break;
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case CSS_FONT_FAMILY_MONOSPACE:
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tattr.tta_Name = option_font_mono;
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break;
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case CSS_FONT_FAMILY_CURSIVE:
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tattr.tta_Name = option_font_cursive;
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break;
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case CSS_FONT_FAMILY_FANTASY:
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tattr.tta_Name = option_font_fantasy;
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break;
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default:
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tattr.tta_Name = option_font_sans;
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break;
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}
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switch(style->font_style)
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{
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case CSS_FONT_STYLE_ITALIC:
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tattr.tta_Style = FSB_ITALIC;
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break;
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case CSS_FONT_STYLE_OBLIQUE:
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tattr.tta_Style = FSB_BOLD;
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break;
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default:
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tattr.tta_Style = FS_NORMAL;
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break;
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}
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/* not supported
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switch(style->font_variant)
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{
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default:
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//printf("font variant: %ld\n",style->font_variant);
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break;
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}
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*/
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switch(style->font_size.size)
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{
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case CSS_FONT_SIZE_LENGTH:
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tattr.tta_YSize = (UWORD)style->font_size.value.length.value;
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break;
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default:
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printf("FONT SIZE TYPE: %ld\n",style->font_size.size);
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break;
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}
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if(tattr.tta_YSize < option_font_min_size)
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tattr.tta_YSize = option_font_min_size;
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tattr.tta_Flags = 0;
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/* Uncommenting this changes the font's charset.
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106 is UTF-8 but OS4 doesn't support it so this only results in a crash!
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tattrtags[0].ti_Tag = TA_CharSet;
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tattrtags[0].ti_Data = 106;
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tattrtags[1].ti_Tag = TAG_DONE;
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tattr.tta_Flags = FSB_TAGGED;
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tattr.tta_Tags = &tattrtags;
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*/
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tfont = OpenDiskFont((struct TextAttr *)&tattr);
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if(tfont)
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{
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SetRPAttrs(currp,
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RPTAG_Font,tfont,
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TAG_DONE);
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}
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CloseFont(tfont);
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}
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