mirror of
https://github.com/netsurf-browser/netsurf
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119 lines
2.8 KiB
C
119 lines
2.8 KiB
C
/**
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* $Id: font.c,v 1.2 2002/09/11 14:24:02 monkeyson Exp $
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*/
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#include <stdio.h>
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#include "netsurf/render/css.h"
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#include "netsurf/render/font.h"
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#include "netsurf/render/utils.h"
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#include "netsurf/desktop/gui.h"
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#include "oslib/font.h"
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/**
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* functions
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*/
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/** it is rather inefficient calling this all the time **/
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font_f riscos_font_css_to_handle(struct css_style* style)
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{
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int width = 12 * 16;
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int height = 12 * 16;
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char font_name[255];
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if (style->font_size.size == CSS_FONT_SIZE_LENGTH)
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width = height = style->font_size.value.length.value * 16;
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strcpy(font_name, "Homerton.");
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if (style->font_weight == CSS_FONT_WEIGHT_BOLD)
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strcat(font_name, "Bold");
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else
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strcat(font_name, "Medium");
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if (style->font_style == CSS_FONT_STYLE_ITALIC || style->font_style == CSS_FONT_STYLE_OBLIQUE)
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strcat(font_name, ".Oblique");
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return font_find_font(font_name, width, height, 0, 0, 0, 0);
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}
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unsigned long font_width(struct css_style * style, const char * text, unsigned int length)
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{
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font_scan_block block;
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os_error * error;
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font_f font;
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if (length == 0)
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return 0;
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block.space.x = block.space.y = 0;
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block.letter.x = block.letter.y = 0;
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block.split_char = -1;
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font = riscos_font_css_to_handle(style);
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error = xfont_scan_string(font, (char*) text,
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font_GIVEN_BLOCK | font_GIVEN_LENGTH | font_GIVEN_FONT | font_KERN | font_RETURN_BBOX,
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0x7fffffff, 0x7fffffff,
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&block,
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0, length,
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0, 0, 0, 0);
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if (error != 0) {
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fprintf(stderr, "%s\n", error->errmess);
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die("font_scan_string failed");
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}
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// fprintf(stderr, "Stated length %d, strlen %d\n", (int)length, strlen(text));
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if (length < 0x7fffffff)
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{
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if (text[length - 1] == ' ')
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// {
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block.bbox.x1 += 4*800;
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/* int minx,miny,maxx,maxy;
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char space = ' ';
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// fprintf(stderr, "Space at the end!\n");
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error = xfont_char_bbox(font, space, 0, &minx, &miny, &maxx, &maxy);
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if (error != 0) {
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fprintf(stderr, "%s\n", error->errmess);
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die("font_char_bbox failed");
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}
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block.bbox.x1 += maxx;
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}
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// else
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// fprintf(stderr, "No space\n");*/
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}
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font_lose_font(font);
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return block.bbox.x1 / 800;
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}
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void font_position_in_string(const char* text, struct css_style* style, int length, int x, int* char_offset, int* pixel_offset)
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{
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font_f font;
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font_scan_block block;
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char* split_point;
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int x_out, y_out, length_out;
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block.space.x = block.space.y = 0;
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block.letter.x = block.letter.y = 0;
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block.split_char = -1;
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font = riscos_font_css_to_handle(style);
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xfont_scan_string(font, (char*) text,
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font_GIVEN_BLOCK | font_GIVEN_LENGTH |
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font_GIVEN_FONT | font_KERN | font_RETURN_CARET_POS,
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ro_x_units(x) * 400,
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0x7fffffff,
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&block, 0, length,
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&split_point, &x_out, &y_out, &length_out);
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font_lose_font(font);
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*char_offset = (int)(split_point - text);
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*pixel_offset = browser_x_units(x_out / 400);
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return;
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}
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