128 lines
3.1 KiB
C++
128 lines
3.1 KiB
C++
/*
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* Copyright (C) 2018 CERN
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* Author: Maciej Suminski <maciej.suminski@cern.ch>
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* Author: Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
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*
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* This program is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation, either version 3 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _CAIRO_PRINT_H_
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#define _CAIRO_PRINT_H_
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#include <gal/cairo/cairo_gal.h>
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#include <gal/gal_print.h>
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class wxDC;
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class wxGCDC;
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namespace KIGFX
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{
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/**
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* CAIRO_PRINT_CTX provides a Cairo context created from wxPrintDC.
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* It allows one to prepare printouts using the Cairo library and let wxWidgets handle the rest.
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*/
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class CAIRO_PRINT_CTX : public PRINT_CONTEXT
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{
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public:
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CAIRO_PRINT_CTX( wxDC* aDC );
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~CAIRO_PRINT_CTX();
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cairo_t* GetContext() const
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{
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return m_ctx;
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}
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cairo_surface_t* GetSurface() const
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{
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return m_surface;
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}
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double GetNativeDPI() const override
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{
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return m_dpi;
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}
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bool HasNativeLandscapeRotation() const override
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{
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#if defined(__WXGTK__) && !defined(__WXGTK3__)
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return false;
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#else
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return true;
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#endif
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}
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private:
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wxGCDC* m_gcdc;
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cairo_t* m_ctx;
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cairo_surface_t* m_surface;
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#ifdef __WXMSW__
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///> DC handle on Windows
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void* m_hdc; // the real type is HDC, but do not pull in extra headers
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#endif /* __WXMSW__ */
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double m_dpi;
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};
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class CAIRO_PRINT_GAL : public CAIRO_GAL_BASE, public GAL_PRINT
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{
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public:
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CAIRO_PRINT_GAL( GAL_DISPLAY_OPTIONS& aDisplayOptions,
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std::unique_ptr<CAIRO_PRINT_CTX> aContext );
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void ComputeWorldScreenMatrix() override;
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GAL* GetGAL() override
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{
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return this;
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}
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PRINT_CONTEXT* GetPrintCtx() const override
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{
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return m_printCtx.get();
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}
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/**
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* @param aSize is the printing sheet size expressed in inches.
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* @param aRotateIfLandscape true if the platform requires 90 degrees
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* rotation in order to print in landscape format.
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*/
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void SetNativePaperSize( const VECTOR2D& aSize, bool aRotateIfLandscape ) override;
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/**
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* @param aSize is the schematics sheet size expressed in inches.
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*/
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void SetSheetSize( const VECTOR2D& aSize ) override;
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private:
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///> Returns true if page orientation is landscape
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bool isLandscape() const
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{
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return m_nativePaperSize.x > m_nativePaperSize.y;
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}
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///> Printout size
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VECTOR2D m_nativePaperSize;
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///> Flag indicating whether the platform rotates page automatically or
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///> GAL needs to handle it in the transformation matrix
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bool m_hasNativeLandscapeRotation;
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std::unique_ptr<CAIRO_PRINT_CTX> m_printCtx;
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};
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} // namespace KIGFX
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#endif /* _CAIRO_PRINT_H_ */
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