eBookReaderSwitch/source/pdf/pdf-util.c

106 lines
2.0 KiB
C

#include "mupdf/fitz.h"
#include "mupdf/pdf.h"
fz_display_list *
pdf_new_display_list_from_annot(fz_context *ctx, pdf_annot *annot)
{
fz_display_list *list;
fz_device *dev = NULL;
fz_var(dev);
list = fz_new_display_list(ctx, pdf_bound_annot(ctx, annot));
fz_try(ctx)
{
dev = fz_new_list_device(ctx, list);
pdf_run_annot(ctx, annot, dev, fz_identity, NULL);
fz_close_device(ctx, dev);
}
fz_always(ctx)
{
fz_drop_device(ctx, dev);
}
fz_catch(ctx)
{
fz_drop_display_list(ctx, list);
fz_rethrow(ctx);
}
return list;
}
/*
Render an annotation suitable for blending on top of the opaque
pixmap returned by fz_new_pixmap_from_page_contents.
*/
fz_pixmap *
pdf_new_pixmap_from_annot(fz_context *ctx, pdf_annot *annot, fz_matrix ctm, fz_colorspace *cs, fz_separations *seps, int alpha)
{
fz_rect rect;
fz_irect bbox;
fz_pixmap *pix;
fz_device *dev = NULL;
fz_var(dev);
rect = pdf_bound_annot(ctx, annot);
rect = fz_transform_rect(rect, ctm);
bbox = fz_round_rect(rect);
pix = fz_new_pixmap_with_bbox(ctx, cs, bbox, seps, alpha);
if (alpha)
fz_clear_pixmap(ctx, pix);
else
fz_clear_pixmap_with_value(ctx, pix, 0xFF);
fz_try(ctx)
{
dev = fz_new_draw_device(ctx, ctm, pix);
pdf_run_annot(ctx, annot, dev, fz_identity, NULL);
fz_close_device(ctx, dev);
}
fz_always(ctx)
{
fz_drop_device(ctx, dev);
}
fz_catch(ctx)
{
fz_drop_pixmap(ctx, pix);
fz_rethrow(ctx);
}
return pix;
}
fz_stext_page *
pdf_new_stext_page_from_annot(fz_context *ctx, pdf_annot *annot, const fz_stext_options *options)
{
fz_stext_page *text;
fz_device *dev = NULL;
fz_var(dev);
if (annot == NULL)
return NULL;
text = fz_new_stext_page(ctx, pdf_bound_annot(ctx, annot));
fz_try(ctx)
{
dev = fz_new_stext_device(ctx, text, options);
pdf_run_annot(ctx, annot, dev, fz_identity, NULL);
fz_close_device(ctx, dev);
}
fz_always(ctx)
{
fz_drop_device(ctx, dev);
}
fz_catch(ctx)
{
fz_drop_stext_page(ctx, text);
fz_rethrow(ctx);
}
return text;
}