summaryrefslogtreecommitdiff
path: root/third_party/agg23/agg_renderer_scanline.h
diff options
context:
space:
mode:
authorTom Sepez <tsepez@chromium.org>2015-06-16 16:29:44 -0700
committerTom Sepez <tsepez@chromium.org>2015-06-16 16:29:44 -0700
commit2ca8fcbc8a7a3ef6adfac154c47068c1696205d0 (patch)
treede3f825c75b1b92908825f68af8a4e7146cf97fd /third_party/agg23/agg_renderer_scanline.h
parentea44bd064a86679a47a7265020f997d6e3b88336 (diff)
downloadpdfium-2ca8fcbc8a7a3ef6adfac154c47068c1696205d0.tar.xz
Separate agg-authored code from fx-authored code.chromium/2439chromium/2438chromium/2437chromium/2436chromium/2435
Creates a separate library so we can apply less-strict warnings to the code we can't change from upstream vs. the code we can change, reducing noise in the standalone build. Remove needless foo.{cpp,h} files that merely perform indirection via #include "some_other_path/foo.{cpp,h}". BUG=pdfium:166 R=brucedawson@chromium.org, thestig@chromium.org Review URL: https://codereview.chromium.org/1152743007.
Diffstat (limited to 'third_party/agg23/agg_renderer_scanline.h')
-rw-r--r--third_party/agg23/agg_renderer_scanline.h93
1 files changed, 93 insertions, 0 deletions
diff --git a/third_party/agg23/agg_renderer_scanline.h b/third_party/agg23/agg_renderer_scanline.h
new file mode 100644
index 0000000000..62d104f7f2
--- /dev/null
+++ b/third_party/agg23/agg_renderer_scanline.h
@@ -0,0 +1,93 @@
+
+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.3
+// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
+//
+// Permission to copy, use, modify, sell and distribute this software
+// is granted provided this copyright notice appears in all copies.
+// This software is provided "as is" without express or implied
+// warranty, and with no claim as to its suitability for any purpose.
+//
+//----------------------------------------------------------------------------
+// Contact: mcseem@antigrain.com
+// mcseemagg@yahoo.com
+// http://www.antigrain.com
+//----------------------------------------------------------------------------
+#ifndef AGG_RENDERER_SCANLINE_INCLUDED
+#define AGG_RENDERER_SCANLINE_INCLUDED
+#include "agg_basics.h"
+#include "agg_renderer_base.h"
+#include "agg_render_scanlines.h"
+namespace agg
+{
+template<class BaseRenderer, class SpanGenerator> class renderer_scanline_aa
+{
+public:
+ typedef BaseRenderer base_ren_type;
+ typedef SpanGenerator span_gen_type;
+ renderer_scanline_aa() : m_ren(0), m_span_gen(0) {}
+ renderer_scanline_aa(base_ren_type& ren, span_gen_type& span_gen) :
+ m_ren(&ren),
+ m_span_gen(&span_gen)
+ {}
+ void attach(base_ren_type& ren, span_gen_type& span_gen)
+ {
+ m_ren = &ren;
+ m_span_gen = &span_gen;
+ }
+ void prepare(unsigned max_span_len)
+ {
+ m_span_gen->prepare(max_span_len);
+ }
+ template<class Scanline> void render(const Scanline& sl)
+ {
+ int y = sl.y();
+ m_ren->first_clip_box();
+ do {
+ int xmin = m_ren->xmin();
+ int xmax = m_ren->xmax();
+ if(y >= m_ren->ymin() && y <= m_ren->ymax()) {
+ unsigned num_spans = sl.num_spans();
+ typename Scanline::const_iterator span = sl.begin();
+ for(;;) {
+ int x = span->x;
+ int len = span->len;
+ bool solid = false;
+ const typename Scanline::cover_type* covers = span->covers;
+ if(len < 0) {
+ solid = true;
+ len = -len;
+ }
+ if(x < xmin) {
+ len -= xmin - x;
+ if(!solid) {
+ covers += xmin - x;
+ }
+ x = xmin;
+ }
+ if(len > 0) {
+ if(x + len > xmax) {
+ len = xmax - x + 1;
+ }
+ if(len > 0) {
+ m_ren->blend_color_hspan_no_clip(
+ x, y, len,
+ m_span_gen->generate(x, y, len),
+ solid ? 0 : covers,
+ *covers);
+ }
+ }
+ if(--num_spans == 0) {
+ break;
+ }
+ ++span;
+ }
+ }
+ } while(m_ren->next_clip_box());
+ }
+private:
+ base_ren_type* m_ren;
+ SpanGenerator* m_span_gen;
+};
+}
+#endif