MapPainterGDI.h

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#ifndef OSMSCOUT_MAP_MAPPAINTERGDI_H
#define OSMSCOUT_MAP_MAPPAINTERGDI_H
 
/*
  This source is part of the libosmscout-map-gdi library
  Copyright (C) 2020 Transporter
 
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.
 
  This library 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
  Lesser General Public License for more details.
 
  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
*/
 
#include <osmscoutmapgdi/MapGDIImportExport.h>
 
#include <osmscoutmap/MapPainter.h>
 
namespace osmscout {
 
  class OSMSCOUT_MAP_GDI_API MapPainterGDI : public MapPainter
    {
    public:
        struct NativeLabel {
            std::wstring wstr;
            void* font;
            void* render;
        };
 
        struct NativeGlyph {
            std::string character;
            double width;
            double height;
        };
 
        using GdiLabel = Label<NativeGlyph, NativeLabel>;
 
    private:
        using GdiGlyph = Glyph<NativeGlyph>;
        using GdiLabelInstance = LabelInstance<NativeGlyph, NativeLabel>;
        using GdiLabelLayouter = LabelLayouter<NativeGlyph, NativeLabel, MapPainterGDI>;
        friend GdiLabelLayouter;
 
        GdiLabelLayouter                   m_labelLayouter;
    void                               *m_pBuffer;
        static ULONG_PTR                   m_gdiplusToken;
        static DWORD                       m_gdiplusInstCount;
 
    private:
    osmscout::ScreenVectorRectangle GlyphBoundingBox(const NativeGlyph &glyph) const;
 
    std::shared_ptr<GdiLabel> Layout(const Projection &projection,
                                     const MapParameter &parameter,
                                     const std::string &text,
                                     double fontSize,
                                     double objectWidth,
                                     bool enableWrapping = false,
                                     bool contourLabel = false);
 
    void DrawLabel(const Projection &projection,
                   const MapParameter &parameter,
                   const ScreenVectorRectangle &labelRectangle,
                   const LabelData &label,
                   const NativeLabel &layout);
 
    void DrawGlyphs(const Projection &projection,
                    const MapParameter &parameter,
                    const osmscout::PathTextStyleRef &style,
                    const std::vector<GdiGlyph> &glyphs);
 
    protected:
    void AfterPreprocessing(const StyleConfig &styleConfig,
                            const Projection &projection,
                            const MapParameter &parameter,
                            const MapData &data) override;
 
    void BeforeDrawing(const StyleConfig &styleConfig,
                       const Projection &projection,
                       const MapParameter &parameter,
                       const MapData &data) override;
 
    void AfterDrawing(const StyleConfig &styleConfig,
                      const Projection &projection,
                      const MapParameter &parameter,
                      const MapData &data) override;
 
    bool HasIcon(const StyleConfig &styleConfig,
                 const Projection &projection,
                 const MapParameter &parameter,
                 IconStyle &style) override;
 
    double GetFontHeight(const Projection &projection,
                         const MapParameter &parameter,
                         double fontSize) override;
 
    void DrawGround(const Projection &projection,
                    const MapParameter &parameter,
                    const FillStyle &style) override;

    void RegisterRegularLabel(const Projection &projection,
                              const MapParameter &parameter,
                              const ObjectFileRef& ref,
                              const std::vector<LabelData> &labels,
                              const Vertex2D &position,
                              double objectWidth) override;

    void RegisterContourLabel(const Projection &projection,
                              const MapParameter &parameter,
                              const ObjectFileRef& ref,
                              const PathLabelData &label,
                              const LabelPath &labelPath) override;
 
    void DrawLabels(const Projection &projection,
                    const MapParameter &parameter,
                    const MapData &data) override;
 
    void DrawSymbol(const Projection &projection,
                    const MapParameter &parameter,
                    const Symbol &style,
                    const Vertex2D& screenPos,
                    double scaleFactor) override;
 
    void DrawIcon(const IconStyle *style,
                  const Vertex2D& centerPos,
                  double width, double height) override;
 
    void DrawPath(const Projection &projection,
                  const MapParameter &parameter,
                  const Color &color,
                  double width,
                  const std::vector<double> &dash,
                  LineStyle::CapStyle startCap,
                  LineStyle::CapStyle endCap,
                  const CoordBufferRange& coordRange) override;
 
    void DrawWayOutline(const StyleConfig &styleConfig,
                        const Projection &projection,
                        const MapParameter &parameter,
                        const WayData &data);
 
    void DrawWay(const StyleConfig &styleConfig,
                 const Projection &projection,
                 const MapParameter &parameter,
                 const WayData &data) override;
 
    void DrawContourSymbol(const Projection &projection,
                           const MapParameter &parameter,
                           const Symbol &symbol,
                           const ContourSymbolData& data) override;
 
    void DrawArea(const Projection &projection,
                  const MapParameter &parameter,
                  const AreaData &area) override;
 
    public:
        bool DrawMap(const Projection& projection,
                 const MapParameter& parameter,
                 const MapData& data,
                 HDC hdc,
                 RenderSteps startStep=RenderSteps::FirstStep,
                 RenderSteps endStep=RenderSteps::LastStep);

        explicit MapPainterGDI(const StyleConfigRef& styleConfig);
        ~MapPainterGDI() override;
    };
}
 
#endif