Attachment 109836 Details for Bug 86554 – use cairo 1.14 downscaling

[patch] use cairo 1.14 downscaling

0001-cairo-1.14-now-has-high-quality-downscaling.patch (text/plain), 1.51 KB, created by Adrian Johnson on 2014-11-22 07:38:33 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Adrian Johnson

Created: 2014-11-22 07:38:33 UTC

Size: 1.51 KB

patch

obsolete

>From 5b86cfb4ad256cac40dbe020bc1adaf3a5fa6739 Mon Sep 17 00:00:00 2001
>From: Adrian Johnson <ajohnson@redneon.com>
>Date: Sat, 22 Nov 2014 17:57:34 +1030
>Subject: [PATCH] cairo 1.14 now has high quality downscaling
>
>The filter needs to be GOOD or BEST to activate the high quality
>downscaling.
>---
> poppler/CairoOutputDev.cc | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>
>diff --git a/poppler/CairoOutputDev.cc b/poppler/CairoOutputDev.cc
>index 4e8abcf..216fae9 100644
>--- a/poppler/CairoOutputDev.cc
>+++ b/poppler/CairoOutputDev.cc
>@@ -141,7 +141,11 @@ CairoOutputDev::CairoOutputDev() {
>   strokePathClip = NULL;
>   cairo = NULL;
>   currentFont = NULL;
>+#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 14, 0)
>+  prescaleImages = gFalse;
>+#else
>   prescaleImages = gTrue;
>+#endif
>   printing = gTrue;
>   use_show_text_glyphs = gFalse;
>   inUncoloredPattern = gFalse;
>@@ -1801,7 +1805,7 @@ CairoOutputDev::getFilterForSurface(cairo_surface_t *image,
> 				    GBool interpolate)
> {
>   if (interpolate)
>-    return CAIRO_FILTER_BILINEAR;
>+    return CAIRO_FILTER_BEST;
> 
>   int orig_width = cairo_image_surface_get_width (image);
>   int orig_height = cairo_image_surface_get_height (image);
>@@ -1821,7 +1825,7 @@ CairoOutputDev::getFilterForSurface(cairo_surface_t *image,
>   if (scaled_width / orig_width >= 4 || scaled_height / orig_height >= 4)
> 	  return CAIRO_FILTER_NEAREST;
> 
>-  return CAIRO_FILTER_BILINEAR;
>+  return CAIRO_FILTER_BEST;
> }
> 
> void CairoOutputDev::drawImageMask(GfxState *state, Object *ref, Stream *str,
>-- 
>2.1.3
>

Actions: View | Splinter Review

Attachments on bug 86554: 109836

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.