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#include "muxps-internal.h"
typedef struct xps_image_s xps_image;
struct xps_image_s
{
fz_image base;
fz_pixmap *pix;
int xres;
int yres;
};
static void
xps_free_image(fz_context *ctx, fz_storable *image_)
{
xps_image *image = (xps_image *)image_;
if (image == NULL)
return;
fz_drop_colorspace(ctx, image->base.colorspace);
fz_drop_pixmap(ctx, image->pix);
fz_free(ctx, image);
}
static fz_pixmap *
xps_image_to_pixmap(fz_context *ctx, fz_image *image_, int x, int w)
{
xps_image *image = (xps_image *)image_;
return fz_keep_pixmap(ctx, image->pix);
}
static fz_image *
xps_load_image(fz_context *ctx, byte *buf, int len)
{
fz_pixmap *pix;
xps_image *image;
if (len < 8)
fz_throw(ctx, "unknown image file format");
if (buf[0] == 0xff && buf[1] == 0xd8)
pix = fz_load_jpeg(ctx, buf, len);
else if (memcmp(buf, "\211PNG\r\n\032\n", 8) == 0)
pix = fz_load_png(ctx, buf, len);
else if (memcmp(buf, "II", 2) == 0 && buf[2] == 0xBC)
fz_throw(ctx, "JPEG-XR codec is not available");
else if (memcmp(buf, "MM", 2) == 0 || memcmp(buf, "II", 2) == 0)
pix = fz_load_tiff(ctx, buf, len);
else
fz_throw(ctx, "unknown image file format");
fz_try(ctx)
{
image = fz_malloc_struct(ctx, xps_image);
FZ_INIT_STORABLE(&image->base, 1, xps_free_image);
image->base.w = pix->w;
image->base.h = pix->h;
image->base.mask = NULL;
image->base.colorspace = pix->colorspace;
image->base.get_pixmap = xps_image_to_pixmap;
image->xres = pix->xres;
image->yres = pix->yres;
image->pix = pix;
}
fz_catch(ctx)
{
fz_drop_pixmap(ctx, pix);
fz_rethrow(ctx);
}
return &image->base;
}
static void
xps_paint_image_brush(xps_document *doc, fz_matrix ctm, fz_rect area, char *base_uri, xps_resource *dict,
xml_element *root, void *vimage)
{
xps_image *image = vimage;
float xs, ys;
if (image->xres == 0 || image->yres == 0)
return;
xs = image->base.w * 96 / image->xres;
ys = image->base.h * 96 / image->yres;
ctm = fz_concat(fz_scale(xs, ys), ctm);
fz_fill_image(doc->dev, &image->base, ctm, doc->opacity[doc->opacity_top]);
}
static xps_part *
xps_find_image_brush_source_part(xps_document *doc, 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)
fz_throw(doc->ctx, "cannot find image source attribute");
/* "{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)
fz_throw(doc->ctx, "cannot find image source");
xps_resolve_url(partname, base_uri, image_name, sizeof partname);
return xps_read_part(doc, partname);
}
void
xps_parse_image_brush(xps_document *doc, fz_matrix ctm, fz_rect area,
char *base_uri, xps_resource *dict, xml_element *root)
{
xps_part *part;
fz_image *image;
fz_try(doc->ctx)
{
part = xps_find_image_brush_source_part(doc, base_uri, root);
}
fz_catch(doc->ctx)
{
fz_warn(doc->ctx, "cannot find image source");
return;
}
fz_try(doc->ctx)
{
image = xps_load_image(doc->ctx, part->data, part->size);
}
fz_catch(doc->ctx)
{
fz_warn(doc->ctx, "cannot decode image resource");
xps_free_part(doc, part);
return;
}
xps_free_part(doc, part);
xps_parse_tiling_brush(doc, ctm, area, base_uri, dict, root, xps_paint_image_brush, image);
fz_drop_image(doc->ctx, image);
}
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