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