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netsurf/amiga/iff_dr2d.c

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/*
* Copyright 2009 Chris Young <chris@unsatisfactorysoftware.co.uk>
*
* 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_NS_SVG
#include <stdio.h>
#include <inttypes.h>
#include <svgtiny.h>
#include <proto/exec.h>
#include <string.h>
#include <proto/dos.h>
#ifndef AMIGA_DR2D_STANDALONE
#include "amiga/os3support.h"
#include "amiga/iff_dr2d.h"
#include "content/hlcache.h"
#else
#include "os3support.h"
#include "iff_dr2d.h"
#endif
struct ColorRegister cm[1000];
ULONG numcols;
static ULONG findcolour(ULONG newcol)
{
ULONG i;
ULONG colr = 0xFFFFFFFF;
UBYTE red,grn,blu;
red = svgtiny_RED(newcol);
grn = svgtiny_GREEN(newcol);
blu = svgtiny_BLUE(newcol);
for(i=0;i<numcols;i++)
{
if((cm[i].red == red) && (cm[i].green == grn) && (cm[i].blue == blu))
colr = i;
}
return colr;
}
static void addcolour(ULONG newcol)
{
ULONG colr = findcolour(newcol);
if(colr == 0xFFFFFFFF)
{
cm[numcols].red = svgtiny_RED(newcol);
cm[numcols].green = svgtiny_GREEN(newcol);
cm[numcols].blue = svgtiny_BLUE(newcol);
numcols++;
}
}
bool ami_svg_to_dr2d(struct IFFHandle *iffh, const char *buffer,
uint32_t size, const char *url)
{
struct svgtiny_diagram *diagram;
svgtiny_code code;
unsigned int i;
unsigned int j;
BOOL fons_written = FALSE;
struct fons_struct *fons;
struct stxt_struct *stxt;
struct attr_struct *attr;
/* create svgtiny object */
diagram = svgtiny_create();
if (!diagram) {
fprintf(stderr, "svgtiny_create failed\n");
return 1;
}
/* parse */
code = svgtiny_parse(diagram, buffer, size, url, 1000, 1000);
if (code != svgtiny_OK) {
fprintf(stderr, "svgtiny_parse failed: ");
switch (code) {
case svgtiny_OUT_OF_MEMORY:
fprintf(stderr, "svgtiny_OUT_OF_MEMORY");
break;
case svgtiny_LIBDOM_ERROR:
fprintf(stderr, "svgtiny_LIBDOM_ERROR");
break;
case svgtiny_NOT_SVG:
fprintf(stderr, "svgtiny_NOT_SVG");
break;
case svgtiny_SVG_ERROR:
fprintf(stderr, "svgtiny_SVG_ERROR: line %i: %s",
diagram->error_line,
diagram->error_message);
break;
default:
fprintf(stderr, "unknown svgtiny_code %i", code);
break;
}
fprintf(stderr, "\n");
}
if(!(PushChunk(iffh,ID_DR2D,ID_FORM,IFFSIZE_UNKNOWN)))
{
if(!(PushChunk(iffh,0,ID_NAME,IFFSIZE_UNKNOWN)))
{
WriteChunkBytes(iffh,url,strlen(url));
PopChunk(iffh);
}
if(!(PushChunk(iffh,0,ID_ANNO,18)))
{
WriteChunkBytes(iffh,"Created by NetSurf",18);
PopChunk(iffh);
}
if(!(PushChunk(iffh,0,ID_DRHD,16)))
{
struct drhd_struct drhd;
drhd.XLeft = (float) 0.0;
drhd.YTop = (float) 0.0;
drhd.XRight = (float) diagram->width;
drhd.YBot = (float) diagram->height;
WriteChunkBytes(iffh,&drhd,16);
PopChunk(iffh);
}
if(!(PushChunk(iffh,0,ID_DASH,IFFSIZE_UNKNOWN)))
{
struct dash_struct dash;
dash.DashID = 1;
dash.NumDashes = 0;
WriteChunkBytes(iffh,&dash,sizeof(struct dash_struct));
PopChunk(iffh);
}
if(!(PushChunk(iffh,0,ID_CMAP,IFFSIZE_UNKNOWN)))
{
for (i = 0; i != diagram->shape_count; i++) {
if(diagram->shape[i].fill != svgtiny_TRANSPARENT)
{
addcolour(diagram->shape[i].fill);
}
if(diagram->shape[i].stroke != svgtiny_TRANSPARENT)
{
addcolour(diagram->shape[i].stroke);
}
}
WriteChunkBytes(iffh,cm,3*numcols);
PopChunk(iffh);
}
for (i = 0; i != diagram->shape_count; i++) {
attr = AllocVecTagList(sizeof(struct attr_struct), NULL);
if (diagram->shape[i].fill == svgtiny_TRANSPARENT)
attr->FillType = FT_NONE;
else
{
attr->FillType = FT_COLOR;
attr->FillValue = findcolour(diagram->shape[i].fill);
}
if (diagram->shape[i].stroke == svgtiny_TRANSPARENT)
attr->DashPattern = 0;
else
{
attr->DashPattern = 1;
attr->EdgeValue = findcolour(diagram->shape[i].stroke);
}
attr->EdgeThick = (float) diagram->shape[i].stroke_width;
if(!(PushChunk(iffh,0,ID_ATTR,IFFSIZE_UNKNOWN)))
{
WriteChunkBytes(iffh,attr,14);
PopChunk(iffh);
}
FreeVec(attr);
if (diagram->shape[i].path) {
union {
float PolyPoints;
ULONG val;
} poly[(diagram->shape[i].path_length)*2];
USHORT NumPoints;
long type;
float curx,cury;
curx = 0.0;
cury = 0.0;
NumPoints = 0;
type = ID_OPLY;
for (j = 0;
j != diagram->shape[i].path_length; ) {
switch ((int) diagram->shape[i].path[j]) {
case svgtiny_PATH_MOVE:
if(j != 0)
{
poly[NumPoints*2].val = INDICATOR;
poly[(NumPoints*2)+1].val = IND_MOVETO;
NumPoints++;
}
poly[(NumPoints*2)].PolyPoints = diagram->shape[i].path[j + 1];
poly[(NumPoints*2)+1].PolyPoints = diagram->shape[i].path[j + 2];
NumPoints++;
curx = (float) diagram->shape[i].path[j + 1];
cury = (float) diagram->shape[i].path[j + 2];
j += 3;
break;
case svgtiny_PATH_CLOSE:
type = ID_CPLY;
j += 1;
break;
case svgtiny_PATH_LINE:
poly[(NumPoints*2)].PolyPoints = (float) diagram->shape[i].path[j + 1];
poly[(NumPoints*2)+1].PolyPoints = (float) diagram->shape[i].path[j + 2];
NumPoints++;
curx = (float) diagram->shape[i].path[j + 1];
cury = (float) diagram->shape[i].path[j + 2];
j += 3;
break;
case svgtiny_PATH_BEZIER:
poly[NumPoints*2].val = INDICATOR;
poly[(NumPoints*2)+1].val = IND_CURVE;
NumPoints++;
poly[(NumPoints*2)].PolyPoints = curx;
poly[(NumPoints*2)+1].PolyPoints = cury;
NumPoints++;
poly[(NumPoints*2)].PolyPoints = (float) diagram->shape[i].path[j + 1];
poly[(NumPoints*2)+1].PolyPoints = (float) diagram->shape[i].path[j + 2];
NumPoints++;
poly[(NumPoints*2)].PolyPoints = (float) diagram->shape[i].path[j + 3];
poly[(NumPoints*2)+1].PolyPoints = (float) diagram->shape[i].path[j + 4];
NumPoints++;
poly[(NumPoints*2)].PolyPoints = (float) diagram->shape[i].path[j + 5];
poly[(NumPoints*2)+1].PolyPoints = (float) diagram->shape[i].path[j + 6];
curx = poly[(NumPoints*2)].PolyPoints;
cury = poly[(NumPoints*2)+1].PolyPoints;
NumPoints++;
j += 7;
break;
default:
printf("error\n");
j += 1;
}
}
if(!(PushChunk(iffh,0,type,IFFSIZE_UNKNOWN)))
{
WriteChunkBytes(iffh,&NumPoints,sizeof(USHORT));
WriteChunkBytes(iffh,poly,NumPoints*2*4);
PopChunk(iffh);
}
} else if (diagram->shape[i].text) {
stxt = AllocVecTagList(sizeof(struct stxt_struct), NULL);
stxt->BaseX = diagram->shape[i].text_x;
stxt->BaseY = diagram->shape[i].text_y;
stxt->NumChars = strlen(diagram->shape[i].text);
if(!fons_written)
{
fons = AllocVecTagList(sizeof(struct fons_struct), NULL);
if(!(PushChunk(iffh,0,ID_FONS,IFFSIZE_UNKNOWN)))
{
WriteChunkBytes(iffh,fons,sizeof(struct fons_struct));
WriteChunkBytes(iffh,"Topaz",5);
PopChunk(iffh);
}
FreeVec(fons);
fons_written = TRUE;
}
if(!(PushChunk(iffh,0,ID_STXT,IFFSIZE_UNKNOWN)))
{
WriteChunkBytes(iffh,stxt,26);
WriteChunkBytes(iffh,diagram->shape[i].text,strlen(diagram->shape[i].text));
PopChunk(iffh);
}
FreeVec(stxt);
}
}
PopChunk(iffh);
}
svgtiny_free(diagram);
return 0;
}
#ifndef AMIGA_DR2D_STANDALONE
bool ami_save_svg(struct hlcache_handle *c,char *filename)
{
struct IFFHandle *iffh;
const char *source_data;
ULONG source_size;
if(!ami_download_check_overwrite(filename, NULL, 0)) return false;
if((iffh = AllocIFF())) {
if((iffh->iff_Stream = Open(filename,MODE_NEWFILE))) {
InitIFFasDOS(iffh);
}
else return false;
}
if((OpenIFF(iffh,IFFF_WRITE))) return false;
if((source_data = content_get_source_data(c, &source_size)))
ami_svg_to_dr2d(iffh, source_data, source_size, nsurl_access(hlcache_handle_get_url(c)));
if(iffh) CloseIFF(iffh);
if(iffh->iff_Stream) Close((BPTR)iffh->iff_Stream);
if(iffh) FreeIFF(iffh);
return true;
}
#else
/*
* This code can be compiled as a standalone program for testing etc.
* Use something like the following line:
* gcc -o svg2dr2d iff_dr2d.c -lauto -lsvgtiny -lpthread -lsvgtiny
* -ldom -lwapcaplet -lexpat -lparserutils
* -DWITH_NS_SVG -DAMIGA_DR2D_STANDALONE -D__USE_INLINE__ -D__NOLIBBASE__
*/
const char __attribute__((used)) ver[] = "\0$VER: svg2dr2d 1.2 (05.01.2015)\0";
int main(int argc, char **argv)
{
BPTR fh = 0;
char *buffer;
struct IFFHandle *iffh = NULL;
int64_t size;
LONG rarray[] = {0,0};
struct RDArgs *args;
STRPTR template = "SVG=INPUT/A,DR2D=OUTPUT/A";
enum
{
A_SVG,
A_DR2D
};
#ifndef __amigaos4__
DOSBase = OpenLibrary("dos.library", 37);
if(!DOSBase) return RETURN_FAIL;
IFFParseBase = OpenLibrary("iffparse.library", 37);
if(!IFFParseBase) return RETURN_FAIL;
#endif
args = ReadArgs(template,rarray,NULL);
if(!args)
{
printf("Required argument missing\n");
return 20;
}
if(fh = Open((char *)rarray[A_SVG],MODE_OLDFILE))
{
size = GetFileSize(fh);
buffer = AllocVecTagList((uint32_t)size, NULL);
Read(fh,buffer,(uint32_t)size);
Close(fh);
}
else
{
printf("Unable to open file\n");
return 20;
}
if(iffh = AllocIFF())
{
if(iffh->iff_Stream = Open((char *)rarray[A_DR2D],MODE_NEWFILE))
{
InitIFFasDOS(iffh);
}
else return 20;
}
if((OpenIFF(iffh,IFFF_WRITE))) return 20;
ami_svg_to_dr2d(iffh,buffer,size,(char *)rarray[A_SVG]);
FreeVec(buffer);
if(iffh) CloseIFF(iffh);
if(iffh->iff_Stream) Close((BPTR)iffh->iff_Stream);
if(iffh) FreeIFF(iffh);
FreeArgs(args);
#ifndef __amigaos4__
if(DOSBase) CloseLibrary(DOSBase);
if(IFFParseBase) CloseLibrary(IFFParseBase);
#endif
}
#endif // AMIGA_DR2D_STANDALONE
#endif // WITH_NS_SVG
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