1167514Skmacy/*
2167514Skmacy * Copyright 2005, Stephan A��mus <superstippi@gmx.de>.
3189643Sgnn * Copyright 2008, Andrej Spielmann <andrej.spielmann@seh.ox.ac.uk>.
4167514Skmacy * All rights reserved. Distributed under the terms of the MIT License.
5167514Skmacy *
6167514Skmacy * DrawingMode implementing B_OP_INVERT on B_RGBA32.
7167514Skmacy *
8167514Skmacy */
9167514Skmacy
10167514Skmacy#ifndef DRAWING_MODE_INVERT_SUBPIX_H
11167514Skmacy#define DRAWING_MODE_INVERT_SUBPIX_H
12170076Skmacy
13167514Skmacy#include "DrawingMode.h"
14167514Skmacy#include "GlobalSubpixelSettings.h"
15167514Skmacy
16167514Skmacy// BLEND_INVERT_SUBPIX
17167514Skmacy#define BLEND_INVERT_SUBPIX(d, a1, a2, a3) \
18167514Skmacy{ \
19167514Skmacy	pixel32 _p; \
20167514Skmacy	_p.data32 = *(uint32*)d; \
21167514Skmacy	BLEND_SUBPIX(d, 255 - _p.data8[2], 255 - _p.data8[1], 255 - _p.data8[0], \
22167514Skmacy					a1, a2, a3); \
23167514Skmacy	(void)_p; \
24167514Skmacy}
25167514Skmacy
26167514Skmacy
27167514Skmacy// blend_solid_hspan_invert_subpix
28167514Skmacyvoid
29167514Skmacyblend_solid_hspan_invert_subpix(int x, int y, unsigned len, const color_type& c,
30167514Skmacy	const uint8* covers, agg_buffer* buffer, const PatternHandler* pattern)
31167514Skmacy{
32167514Skmacy	uint8* p = buffer->row_ptr(y) + (x << 2);
33167514Skmacy	const int subpixelL = gSubpixelOrderingRGB ? 2 : 0;
34170076Skmacy	const int subpixelM = 1;
35167514Skmacy	const int subpixelR = gSubpixelOrderingRGB ? 0 : 2;
36167514Skmacy	do {
37170654Skmacy		if (pattern->IsHighColor(x, y))	{
38167514Skmacy			BLEND_INVERT_SUBPIX(p, covers[subpixelL], covers[subpixelM],
39172096Skmacy				covers[subpixelR]);
40185157Sgnn		}
41167514Skmacy		covers += 3;
42167514Skmacy		p += 4;
43167514Skmacy		x++;
44167514Skmacy		len -= 3;
45167746Skmacy	} while (len);
46170654Skmacy}
47180583Skmacy
48167514Skmacy
49167514Skmacy#endif // DRAWING_MODE_INVERT_SUBPIX_H
50170654Skmacy
51167514Skmacy