summaryrefslogtreecommitdiff
path: root/third_party/agg23/agg_rendering_buffer.h
diff options
context:
space:
mode:
authorTom Sepez <tsepez@chromium.org>2015-06-17 10:01:00 -0700
committerTom Sepez <tsepez@chromium.org>2015-06-17 10:01:00 -0700
commitb7d358b498800e4c240d381fa6f098af17a4d95b (patch)
treeaa0d8677af748caf9881ecd011af2b00af925188 /third_party/agg23/agg_rendering_buffer.h
parent9555022ee550ee97415a86957686cc28716c4dee (diff)
downloadpdfium-b7d358b498800e4c240d381fa6f098af17a4d95b.tar.xz
Merge to XFA: Separate agg-authored code from fx-authored code.
Original Review URL: https://codereview.chromium.org/1152743007. BUG=pdfium:166 R=brucedawson@chromium.org, thestig@chromium.org TBR=brucedawson@chromium.org, thestig@chromium.org Review URL: https://codereview.chromium.org/1186423003.
Diffstat (limited to 'third_party/agg23/agg_rendering_buffer.h')
-rw-r--r--third_party/agg23/agg_rendering_buffer.h145
1 files changed, 145 insertions, 0 deletions
diff --git a/third_party/agg23/agg_rendering_buffer.h b/third_party/agg23/agg_rendering_buffer.h
new file mode 100644
index 0000000000..9c1c0c6899
--- /dev/null
+++ b/third_party/agg23/agg_rendering_buffer.h
@@ -0,0 +1,145 @@
+
+//----------------------------------------------------------------------------
+// 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
+//----------------------------------------------------------------------------
+//
+// class rendering_buffer
+//
+//----------------------------------------------------------------------------
+#ifndef AGG_RENDERING_BUFFER_INCLUDED
+#define AGG_RENDERING_BUFFER_INCLUDED
+#include "agg_basics.h"
+namespace agg
+{
+class rendering_buffer
+{
+public:
+ struct row_data {
+ int x1, x2;
+ const int8u* ptr;
+ row_data() {}
+ row_data(int x1_, int x2_, const int8u* ptr_) :
+ x1(x1_), x2(x2_), ptr(ptr_) {}
+ };
+ struct span_data {
+ int x;
+ unsigned len;
+ int8u* ptr;
+ span_data() {}
+ span_data(int) : x(0), len(0), ptr(0) {}
+ span_data(int x_, unsigned len_, int8u* ptr_) :
+ x(x_), len(len_), ptr(ptr_) {}
+ };
+ ~rendering_buffer()
+ {
+ FX_Free(m_rows);
+ }
+ rendering_buffer() :
+ m_buf(0),
+ m_rows(0),
+ m_width(0),
+ m_height(0),
+ m_stride(0),
+ m_max_height(0)
+ {
+ }
+ rendering_buffer(int8u* buf, unsigned width, unsigned height, int stride) :
+ m_buf(0),
+ m_rows(0),
+ m_width(0),
+ m_height(0),
+ m_stride(0),
+ m_max_height(0)
+ {
+ attach(buf, width, height, stride);
+ }
+ void attach(int8u* buf, unsigned width, unsigned height, int stride)
+ {
+ m_buf = buf;
+ m_width = width;
+ m_height = height;
+ m_stride = stride;
+ if(height > m_max_height) {
+ FX_Free(m_rows);
+ m_rows = FX_Alloc(int8u*, m_max_height = height);
+ }
+ int8u* row_ptr = m_buf;
+ if(stride < 0) {
+ row_ptr = m_buf - int(height - 1) * stride;
+ }
+ int8u** rows = m_rows;
+ while(height--) {
+ *rows++ = row_ptr;
+ row_ptr += stride;
+ }
+ }
+ int8u* buf()
+ {
+ return m_buf;
+ }
+ const int8u* buf() const
+ {
+ return m_buf;
+ }
+ unsigned width() const
+ {
+ return m_width;
+ }
+ unsigned height() const
+ {
+ return m_height;
+ }
+ int stride() const
+ {
+ return m_stride;
+ }
+ unsigned stride_abs() const
+ {
+ return (m_stride < 0) ?
+ unsigned(-m_stride) :
+ unsigned(m_stride);
+ }
+ int8u* row(unsigned y)
+ {
+ return m_rows[y];
+ }
+ const int8u* row(unsigned y) const
+ {
+ return m_rows[y];
+ }
+ int8u* next_row(void* p)
+ {
+ return (int8u*)p + m_stride;
+ }
+ const int8u* next_row(const void* p) const
+ {
+ return (int8u*)p + m_stride;
+ }
+ int8u const* const* rows() const
+ {
+ return m_rows;
+ }
+private:
+ rendering_buffer(const rendering_buffer&);
+ const rendering_buffer& operator = (const rendering_buffer&);
+private:
+ int8u* m_buf;
+ int8u** m_rows;
+ unsigned m_width;
+ unsigned m_height;
+ int m_stride;
+ unsigned m_max_height;
+};
+}
+#endif