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netsurf/atari/plot/font_vdi.c

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/*
* Copyright 2010 Ole Loots <ole@monochrom.net>
*
* 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/>.
*/
#ifdef WITH_VDI_FONT_DRIVER
#include "atari/plot/plot.h"
#include "atari/plot/font_vdi.h"
#include "utils/utf8.h"
#include "utils/log.h"
static char * lstr = NULL;
static int dtor( FONT_PLOTTER self );
static int str_width( FONT_PLOTTER self,const plot_font_style_t *fstyle, const char * str, size_t length, int * width );
static int str_split( FONT_PLOTTER self, const plot_font_style_t *fstyle,const char *string,
size_t length,int x, size_t *char_offset, int *actual_x );
static int pixel_pos( FONT_PLOTTER self, const plot_font_style_t *fstyle,const char *string,
size_t length,int x, size_t *char_offset, int *actual_x );
static int text( FONT_PLOTTER self, int x, int y, const char *text, size_t length, const plot_font_style_t *fstyle );
static bool init = false;
static int vdih;
extern struct s_vdi_sysinfo vdi_sysinfo;
int ctor_font_plotter_vdi( FONT_PLOTTER self )
{
self->dtor = dtor;
self->str_width = str_width;
self->str_split = str_split;
self->pixel_pos = pixel_pos;
self->text = text;
LOG(("%s: %s\n", (char*)__FILE__, __FUNCTION__));
if( !init ) {
vdih = self->vdi_handle;
}
init = true;
return( 1 );
}
static int dtor( FONT_PLOTTER self )
{
return( 1 );
}
static int str_width( FONT_PLOTTER self,const plot_font_style_t *fstyle, const char * str,
size_t length, int * width )
{
short cw, ch, cellw, cellh;
short pxsize;
short fx=0;
lstr = (char*)str;
utf8_to_enc(str, "ATARIST", length, &lstr );
assert( lstr != NULL );
int slen = strlen(lstr);
if( fstyle->flags & FONTF_ITALIC )
fx |= 4;
if( fstyle->flags & FONTF_OBLIQUE )
fx |= 16;
if( fstyle->weight > 450 )
fx |= 1;
vst_effects( self->vdi_handle, fx );
/* TODO: replace 90 with global dpi setting */
pxsize = ceil( (fstyle->size/FONT_SIZE_SCALE) * 90 / 72 );
vst_height( self->vdi_handle, pxsize ,&cw, &ch, &cellw, &cellh);
*width = slen * cellw;
free( (void*)lstr );
lstr = NULL;
return( 0 );
}
static int str_split( FONT_PLOTTER self, const plot_font_style_t * fstyle, const char *string,
size_t length,int x, size_t *char_offset, int *actual_x )
{
short cw, ch, cellw, cellh;
short pxsize;
short fx=0;
int i;
lstr = (char*)string;
int slen = 0;
int last_space_x = 0;
int last_space_idx = 0;
utf8_to_enc(string, "ATARIST", length, &lstr );
assert( lstr != NULL );
slen = strlen(lstr);
if( fstyle->flags & FONTF_ITALIC )
fx |= 4;
if( fstyle->flags & FONTF_OBLIQUE )
fx |= 16;
if( fstyle->weight > 450 )
fx |= 1;
vst_effects( self->vdi_handle, fx );
pxsize = ceil( (fstyle->size/FONT_SIZE_SCALE) * 90 / 72 );
vst_height( self->vdi_handle, pxsize ,&cw, &ch, &cellw, &cellh);
*actual_x = 0;
*char_offset = 0;
int cpos=0;
for( i=0; i<slen; i++) {
if( lstr[i] == ' ' ) {
last_space_x = *actual_x;
last_space_idx = cpos;
}
if( *actual_x > x ) {
*actual_x = last_space_x;
*char_offset = last_space_idx;
return true;
}
*actual_x += cellw;
cpos++;
}
*char_offset = cpos;
free( (void*)lstr );
lstr = NULL;
return( 0 );
}
static int pixel_pos( FONT_PLOTTER self, const plot_font_style_t * fstyle,const char *string,
size_t length,int x, size_t *char_offset, int *actual_x )
{
short cw, ch, cellw, cellh;
short pxsize=0;
short fx=0;
lstr = (char*)string;
int i=0;
int curpx=0;
utf8_to_enc(string, "ATRIST", length, &lstr );
assert( lstr != NULL );
int slen = strlen(lstr);
if( fstyle->flags & FONTF_ITALIC )
fx |= 4;
if( fstyle->flags & FONTF_OBLIQUE )
fx |= 16;
if( fstyle->weight > 450 )
fx |= 1;
vst_effects( self->vdi_handle, fx );
pxsize = ceil( (fstyle->size/FONT_SIZE_SCALE) * 90 / 72 );
vst_height( self->vdi_handle, pxsize ,&cw, &ch, &cellw, &cellh);
*actual_x = 0;
*char_offset = 0;
for( i=0; i<slen; i++) {
*actual_x += cellw;
if( *actual_x > x) {
*actual_x -= cellw;
*char_offset = i;
break;
}
}
free( (void*)lstr );
lstr = NULL;
return( 0 );
}
static inline void vst_rgbcolor( short vdih, uint32_t cin )
{
if( vdi_sysinfo.scr_bpp > 8 ) {
unsigned short c[4];
rgb_to_vdi1000( (unsigned char*)&cin, (unsigned short*)&c );
vs_color( vdih, OFFSET_CUSTOM_COLOR, (unsigned short*)&c[0] );
vst_color( vdih, OFFSET_CUSTOM_COLOR );
} else {
if( vdi_sysinfo.scr_bpp >= 4 )
vst_color( vdih, RGB_TO_VDI(cin) );
else
vst_color( vdih, BLACK );
}
}
static int text( FONT_PLOTTER self, int x, int y, const char *text, size_t length,
const plot_font_style_t *fstyle )
{
/* todo: either limit the string to max 80 chars, or use v_ftext instead of v_gtext */
short cw, ch, cellw, cellh;
short pxsize=8;
short fx=0;
lstr = (char*)text;
utf8_to_enc(text, "ATARIST", length, &lstr );
assert( lstr != NULL );
int slen = strlen(lstr);
size_t mylen = MIN(511, slen );
char textcpy[mylen+1];
textcpy[mylen] = 0;
strncpy((char*)&textcpy, lstr, mylen+1 );
if( fstyle != NULL){
if( fstyle->flags & FONTF_ITALIC )
fx |= 4;
if( fstyle->flags & FONTF_OBLIQUE )
fx |= 4;
if( fstyle->weight > 450 )
fx |= 1;
/* TODO: netsurf uses 90 as default dpi ( somewhere defined in libcss),
use that value or pass it as arg, to reduce netsurf dependency */
pxsize = ceil( (fstyle->size/FONT_SIZE_SCALE) * 90 / 72 );
}
x += CURFB(self->plotter).x;
y += CURFB(self->plotter).y;
vst_effects( self->vdi_handle, fx );
vst_alignment(vdih, 0, 4, &cw, &ch );
vst_height( self->vdi_handle, pxsize, &cw, &ch, &cellw, &cellh);
vswr_mode( self->vdi_handle, MD_TRANS );
vst_rgbcolor(self->vdi_handle, fstyle->foreground );
if( atari_sysinfo.gdos_FSMC ){
v_ftext( self->vdi_handle, x, y, (char*)&textcpy );
} else {
v_gtext( self->vdi_handle, x, y, (char*)&textcpy );
}
free( lstr );
return( 0 );
}
#endif
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