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#include "fitz.h"
#include "muxps.h"
static int
xps_decode_image(fz_pixmap **imagep, byte *buf, int len)
{
int error;
if (len < 8)
return fz_throw("unknown image file format");
if (buf[0] == 0xff && buf[1] == 0xd8)
{
error = xps_decode_jpeg(imagep, buf, len);
if (error)
return fz_rethrow(error, "cannot decode jpeg image");
}
else if (memcmp(buf, "\211PNG\r\n\032\n", 8) == 0)
{
error = xps_decode_png(imagep, buf, len);
if (error)
return fz_rethrow(error, "cannot decode png image");
}
else if (memcmp(buf, "II", 2) == 0 && buf[2] == 0xBC)
{
return fz_throw("JPEG-XR codec is not available");
}
else if (memcmp(buf, "MM", 2) == 0 || memcmp(buf, "II", 2) == 0)
{
error = xps_decode_tiff(imagep, buf, len);
if (error)
return fz_rethrow(error, "cannot decode TIFF image");
}
else
return fz_throw("unknown image file format");
return fz_okay;
}
static void
xps_paint_image_brush(xps_context *ctx, fz_matrix ctm, fz_rect area, char *base_uri, xps_resource *dict,
xml_element *root, void *vimage)
{
fz_pixmap *pixmap = vimage;
float xs = pixmap->w * 96 / pixmap->xres;
float ys = pixmap->h * 96 / pixmap->yres;
fz_matrix im = fz_scale(xs, -ys);
im.f = ys;
ctm = fz_concat(im, ctm);
fz_fill_image(ctx->dev, pixmap, ctm, ctx->opacity[ctx->opacity_top]);
}
static xps_part *
xps_find_image_brush_source_part(xps_context *ctx, char *base_uri, xml_element *root)
{
char *image_source_att;
char buf[1024];
char partname[1024];
char *image_name;
char *profile_name;
char *p;
image_source_att = xml_att(root, "ImageSource");
if (!image_source_att)
return NULL;
/* "{ColorConvertedBitmap /Resources/Image.tiff /Resources/Profile.icc}" */
if (strstr(image_source_att, "{ColorConvertedBitmap") == image_source_att)
{
image_name = NULL;
profile_name = NULL;
fz_strlcpy(buf, image_source_att, sizeof buf);
p = strchr(buf, ' ');
if (p)
{
image_name = p + 1;
p = strchr(p + 1, ' ');
if (p)
{
*p = 0;
profile_name = p + 1;
p = strchr(p + 1, '}');
if (p)
*p = 0;
}
}
}
else
{
image_name = image_source_att;
profile_name = NULL;
}
if (!image_name)
return NULL;
xps_absolute_path(partname, base_uri, image_name, sizeof partname);
return xps_read_part(ctx, partname);
}
void
xps_parse_image_brush(xps_context *ctx, fz_matrix ctm, fz_rect area,
char *base_uri, xps_resource *dict, xml_element *root)
{
xps_part *part;
fz_pixmap *image;
int code;
part = xps_find_image_brush_source_part(ctx, base_uri, root);
if (!part) {
fz_warn("cannot find image source");
return;
}
code = xps_decode_image(&image, part->data, part->size);
if (code < 0) {
xps_free_part(ctx, part);
fz_catch(-1, "cannot decode image resource");
return;
}
xps_parse_tiling_brush(ctx, ctm, area, base_uri, dict, root, xps_paint_image_brush, image);
fz_drop_pixmap(image);
xps_free_part(ctx, part);
}
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