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// aggCanvas.h
// this file is part of Context Free
// ---------------------
// Copyright (C) 2005-2008 Mark Lentczner - markl@glyphic.com
// Copyright (C) 2006-2012 John Horigan - john@glyphic.com
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// John Horigan can be contacted at john@glyphic.com or at
// John Horigan, 1209 Villa St., Mountain View, CA 94041-1123, USA
//
// Mark Lentczner can be contacted at markl@glyphic.com or at
// Mark Lentczner, 1209 Villa St., Mountain View, CA 94041-1123, USA
//
//
#ifndef INCLUDE_AGGCANVAS_H
#define INCLUDE_AGGCANVAS_H
#include "cfdg.h"
#include "agg2/agg_trans_affine.h"
#include "agg2/agg_path_storage.h"
#include <map>
class aggCanvas : public Canvas {
public:
enum PixelFormat {
UnknownPixelFormat = 0,
Gray8_Blend = 1,
RGBA8_Blend = 2,
RGB8_Blend = 3,
FF_Blend = 4,
FF24_Blend = 5,
AV_Blend = 6,
Has_16bit_Color = 8,
Has_Custom_Blend = 16,
Gray16_Blend = Gray8_Blend | Has_16bit_Color,
RGBA16_Blend = RGBA8_Blend | Has_16bit_Color,
RGB16_Blend = RGB8_Blend | Has_16bit_Color,
RGBA8_Custom_Blend = RGBA8_Blend | Has_Custom_Blend,
RGBA16_Custom_Blend = RGBA16_Blend | Has_Custom_Blend,
FF_Custom_Blend = FF_Blend | Has_Custom_Blend,
AV_Custom_Blend = AV_Blend | Has_Custom_Blend
};
static const std::map<PixelFormat, int> BytesPerPixel;
void start(bool clear, const agg::rgba& bk, int width, int height) override;
void end() override;
void primitive(int shape, RGBA8 c, agg::trans_affine tr, agg::comp_op_e blend) override;
void path(RGBA8 c, agg::trans_affine tr, const AST::CommandInfo& attr) override;
bool colorCount256();
// return whether the aggCanvas can fit in byte pixels
static PixelFormat SuggestPixelFormat(CFDG* engine);
protected:
aggCanvas(PixelFormat);
~aggCanvas() override; // defined in cpp file so that it knows how
// to call the impl dtor
void attach(void* data, unsigned width, unsigned height, int stride, bool invert = true);
// data is int8u grayscale pixels or int32u pixels
void copy(void* data, unsigned width, unsigned height,
int stride, PixelFormat format);
// copy the image from different pixel buffer
public:
int cropX();
int cropY();
int cropWidth();
int cropHeight();
void draw(const aggCanvas& src, int x, int y);
//private:
public:
class impl;
std::unique_ptr<impl> m;
};
#endif // INCLUDE_AGGCANVAS_H
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