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/** \file
* \brief Cairo SVG Driver
*
* See Copyright Notice in cd.h
*/
#include <stdlib.h>
#include <stdio.h>
#include <limits.h>
#include "cd.h"
#include "cdcairo.h"
#include "cdcairoctx.h"
#include <cairo-svg.h>
static void cdflush(cdCtxCanvas *ctxcanvas)
{
(void)ctxcanvas;
/* does nothing in SVG */
}
static void cdkillcanvas (cdCtxCanvas *ctxcanvas)
{
cdcairoKillCanvas(ctxcanvas);
}
static void cdcreatecanvas(cdCanvas* canvas, void* data)
{
cdCtxCanvas* ctxcanvas;
char* strdata = (char*)data;
char filename[10240] = "";
double w_mm = INT_MAX*3.78, h_mm = INT_MAX*3.78, res = 3.78;
cairo_surface_t *surface;
/* Starting parameters */
if (strdata == NULL)
return;
strdata += cdGetFileName(strdata, filename);
if (filename[0] == 0)
return;
sscanf(strdata, "%lgx%lg %lg", &w_mm, &h_mm, &res);
/* update canvas context */
canvas->w = (int)(w_mm * res);
canvas->h = (int)(h_mm * res);
canvas->w_mm = w_mm;
canvas->h_mm = h_mm;
canvas->bpp = 24;
canvas->xres = res;
canvas->yres = res;
surface = cairo_svg_surface_create(filename, CD_MM2PT*w_mm, CD_MM2PT*h_mm);
/* Starting Cairo driver */
ctxcanvas = cdcairoCreateCanvas(canvas, cairo_create(surface));
cairo_surface_destroy(surface);
}
static void cdinittable(cdCanvas* canvas)
{
cdcairoInitTable(canvas);
canvas->cxKillCanvas = cdkillcanvas;
canvas->cxFlush = cdflush;
}
static cdContext cdCairoSVGContext =
{
CD_CAP_ALL & ~(CD_CAP_PLAY | CD_CAP_YAXIS | CD_CAP_REGION | CD_CAP_WRITEMODE | CD_CAP_PALETTE),
0, /* not a plus driver */
CD_CTX_FILE,
cdcreatecanvas,
cdinittable,
NULL,
NULL
};
cdContext* cdContextCairoSVG(void)
{
return &cdCairoSVGContext;
}
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