mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-12-02 10:56:57 +03:00
157 lines
4.4 KiB
C
157 lines
4.4 KiB
C
/*
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* Copyright 2010 Ole Loots <ole@monochrom.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 <stdbool.h>
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#include <stdlib.h>
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#include "utils/utf8.h"
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#include "utils/log.h"
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#include "utils/nsoption.h"
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#include "netsurf/layout.h"
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#include "netsurf/mouse.h"
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#include "netsurf/plotters.h"
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#include "atari/gui.h"
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#include "atari/plot/fontplot.h"
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#include "atari/plot/plot.h"
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#include "atari/findfile.h"
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#include "atari/font.h"
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extern FONT_PLOTTER fplotter;
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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[in] fstyle style for this text
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* \param[in] string UTF-8 string to measure
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* \param[in] length length of string, in bytes
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* \param[in] x coordinate to search for
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* \param[out] char_offset updated to offset in string of actual_x, [0..length]
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* \param[out] actual_x updated to x coordinate of character closest to x
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* \return NSERROR_OK and char_offset and actual_x updated or appropriate error code on faliure
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*/
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static nserror
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atari_font_position(const plot_font_style_t *fstyle,
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const char *string,
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size_t length,
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int x,
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size_t *char_offset,
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int *actual_x)
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{
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float scale = plot_get_scale();
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if (scale != 1.0) {
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plot_font_style_t newstyle = *fstyle;
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newstyle.size = (int)((float)fstyle->size*scale);
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fplotter->pixel_pos(fplotter, &newstyle, string, length, x,
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char_offset, actual_x);
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} else {
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fplotter->pixel_pos(fplotter, fstyle, string, length, x,
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char_offset, actual_x);
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}
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return NSERROR_OK;
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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[in] fstyle style for this text
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* \param[in] string UTF-8 string to measure
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* \param[in] length length of string, in bytes
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* \param[in] x width available
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* \param[out] char_offset updated to offset in string of actual_x, [1..length]
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* \param[out] actual_x updated to x coordinate of character closest to x
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* \return NSERROR_OK or appropriate error code on faliure
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*
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* On exit, char_offset indicates first character after split point.
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*
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* \note char_offset of 0 must never be returned.
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*
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* Returns:
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* char_offset giving split point closest to x, where actual_x <= x
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* else
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* char_offset giving split point closest to x, where actual_x > x
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*
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* Returning char_offset == length means no split possible
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*/
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static nserror
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atari_font_split(const plot_font_style_t *fstyle,
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const char *string,
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size_t length,
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int x,
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size_t *char_offset,
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int *actual_x)
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{
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float scale = plot_get_scale();
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if (scale != 1.0) {
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plot_font_style_t newstyle = *fstyle;
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newstyle.size = (int)((float)fstyle->size*scale);
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fplotter->str_split(fplotter, &newstyle, string, length, x,
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char_offset, actual_x);
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} else {
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fplotter->str_split(fplotter, fstyle, string, length, x,
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char_offset, actual_x);
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}
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return NSERROR_OK;
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}
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/**
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* Measure the width of a string.
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*
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* \param[in] fstyle plot style for this text
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* \param[in] string UTF-8 string to measure
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* \param[in] length length of string, in bytes
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* \param[out] width updated to width of string[0..length)
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* \return NSERROR_OK and width updated or appropriate error code on faliure
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*/
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static nserror
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atari_font_width(const plot_font_style_t *fstyle,
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const char *str,
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size_t length,
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int * width)
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{
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float scale = plot_get_scale();
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if (scale != 1.0) {
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plot_font_style_t newstyle = *fstyle;
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newstyle.size = (int)((float)fstyle->size*scale);
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fplotter->str_width(fplotter, &newstyle, str, length, width);
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} else {
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fplotter->str_width(fplotter, fstyle, str, length, width);
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}
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return NSERROR_OK;
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}
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static struct gui_layout_table layout_table = {
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.width = atari_font_width,
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.position = atari_font_position,
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.split = atari_font_split,
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};
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struct gui_layout_table *atari_layout_table = &layout_table;
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