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/****************************************************************************
* Copyright (C) from 2009 to Present EPAM Systems.
*
* This file is part of Indigo toolkit.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
***************************************************************************/
#ifndef __render_context_h__
#define __render_context_h__
#include <cairo-pdf.h>
#include <cairo-svg.h>
#include <cairo.h>
#include "render_common.h"
namespace indigo
{
class RenderContext
{
public:
DECL_ERROR;
void checkPathNonEmpty() const;
RenderContext(const RenderOptions& opt, float sf, float lwf);
void setDefaultScale(float scale);
void setHDC(PVOID hdc);
int getMaxPageSize() const;
void setLineWidth(double width);
void setFontFamily(const char* ff);
void setOutput(Output* output);
void createSurface(cairo_write_func_t writer, Output* output, int width, int height);
void init();
void fillBackground();
void initNullContext();
void initContext(int width, int height);
void closeContext(bool discard);
void translate(float dx, float dy);
void scale(float s);
void storeTransform();
void restoreTransform();
void resetTransform();
void removeStoredTransform();
void drawRectangle(const Vec2f& p, const Vec2f& sz);
void drawItemBackground(const RenderItem& item);
void drawTextItemText(const TextItem& ti, bool idle);
void drawTextItemText(const TextItem& ti, const Vec3f& color, bool idle);
void drawTextItemText(const TextItem& ti, const Vec3f& color, bool bold, bool idle);
void drawBracket(RenderItemBracket& bracket);
void drawAttachmentPoint(RenderItemAttachmentPoint& ri, bool idle);
void drawRSiteAttachmentIndex(RenderItemRSiteAttachmentIndex& ri);
void drawLine(const Vec2f& v0, const Vec2f& v1);
void fillHex(const Vec2f& v0, const Vec2f& v1, const Vec2f& v2, const Vec2f& v3, const Vec2f& v4, const Vec2f& v5);
void fillQuad(const Vec2f& v0, const Vec2f& v1, const Vec2f& v2, const Vec2f& v3);
void fillQuadStripes(const Vec2f& v0r, const Vec2f& v0l, const Vec2f& v1r, const Vec2f& v1l, int cnt);
void fillPentagon(const Vec2f& v0, const Vec2f& v1, const Vec2f& v2, const Vec2f& v3, const Vec2f& v4);
void drawQuad(const Vec2f& v0, const Vec2f& v1, const Vec2f& v2, const Vec2f& v3);
void drawTriangleZigzag(const Vec2f& v0, const Vec2f& v1, const Vec2f& v2, int cnt);
void drawCircle(const Vec2f& center, const float r);
void fillCircle(const Vec2f& center, const float r);
void drawArc(const Vec2f& center, const float r, const float a0, const float a1);
void drawPoly(const Array<Vec2f>& v);
void setFontSize(double fontSize);
void setTextItemSize(TextItem& ti);
void setTextItemSize(TextItem& ti, const Vec2f& c);
void setGraphItemSizeDot(GraphItem& gi);
void setGraphItemSizeCap(GraphItem& gi);
void setGraphItemSizeSign(GraphItem& gi, GraphItem::TYPE type);
void drawGraphItem(GraphItem& gi);
void drawGraphItem(GraphItem& gi, const Vec3f& color);
void fillRect(double x, double y, double w, double h);
void getColor(float& r, float& g, float& b, int c);
int getElementColor(int label);
void getColorVec(Vec3f& v, int color);
void setSingleSource(int color);
void setSingleSource(const Vec3f& color);
void setGradientSource(const Vec3f& color1, const Vec3f& color2, const Vec2f& pos1, const Vec2f& pos2);
void clearPattern();
float _getDashedLineAlignmentOffset(float length);
void setDash(const Array<double>& dash, float offset = 0);
void resetDash();
void drawPlus(const Vec2f& pos, const float linewidth, const float size);
void drawEquality(const Vec2f& pos, const float linewidth, const float size, const float interval);
void drawArrow(const Vec2f& p1, const Vec2f& p2, const float width, const float headwidth, const float headsize);
float highlightedBondLineWidth() const;
float currentLineWidth() const;
void setHighlight();
void resetHighlight();
void resetHighlightThickness();
const RenderSettings& getRenderSettings() const
{
return _settings;
}
int getWidth() const
{
return _width;
}
int getHeight() const
{
return _height;
}
void cairoCheckStatus() const;
void cairoCheckSurfaceStatus() const;
#ifdef _WIN32
cairo_surface_t* createWin32Surface();
cairo_surface_t* createWin32PrintingSurfaceForHDC();
cairo_surface_t* createWin32PrintingSurfaceForMetafile(bool& isLarge);
void storeAndDestroyMetafile(bool discard);
#endif
void fontsClear();
void fontsInit();
void fontsDispose();
double fontGetSize(FONT_SIZE size);
void fontsSetFont(cairo_t* cr, FONT_SIZE size, bool bold);
void fontsGetTextExtents(cairo_t* cr, const char* text, int size, float& dx, float& dy, float& rx, float& ry);
void fontsDrawText(const TextItem& ti, const Vec3f& color, bool bold, bool idle);
void bbIncludePoint(const Vec2f& v);
void bbIncludePoint(double x, double y);
void bbIncludePath(bool stroke);
void bbGetMin(Vec2f& v);
void bbGetMax(Vec2f& v);
void _bbVecToUser(Vec2f& d, const Vec2f& s);
Vec2f bbmin, bbmax;
private:
static cairo_status_t writer(void* closure, const unsigned char* data, unsigned int length);
void _drawGraphItem(GraphItem& gi);
void lineTo(const Vec2f& v);
void lineToRel(float x, float y);
void lineToRel(const Vec2f& v);
void moveTo(const Vec2f& v);
void moveToRel(float x, float y);
void moveToRel(const Vec2f& v);
int _width;
int _height;
float _defaultScale;
Vec3f _backColor;
Vec3f _baseColor;
float _currentLineWidth;
cairo_pattern_t* _pattern;
class TextLock
{
public:
TextLock()
{
#ifdef _WIN32
osMutexCreate(&_mutex);
#endif
}
~TextLock()
{
#ifdef _WIN32
osMutexDelete(&_mutex);
#endif
}
void lock()
{
#ifdef _WIN32
osMutexLock(&_mutex);
#endif
}
void unlock()
{
#ifdef _WIN32
osMutexUnlock(&_mutex);
#endif
}
private:
#ifdef _WIN32
os_mutex _mutex;
#endif
};
static TextLock _tlock;
CP_DECL;
TL_CP_DECL(Array<char>, _fontfamily);
TL_CP_DECL(Array<cairo_matrix_t>, transforms);
#ifdef _WIN32
void* _h_fonts[FONT_SIZE_COUNT * 2];
#endif
cairo_font_face_t *cairoFontFaceRegular, *cairoFontFaceBold;
cairo_matrix_t fontScale, fontCtm;
cairo_font_options_t* fontOptions;
cairo_scaled_font_t* _scaled_fonts[FONT_SIZE_COUNT * 2];
bool metafileFontsToCurves;
cairo_t* _cr;
cairo_surface_t* _surface;
void* _meta_hdc;
public:
RenderSettings _settings;
const RenderOptions& opt;
};
} // namespace indigo
#endif
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