File indexing completed on 2025-02-16 04:21:47

 /*
     SPDX-FileCopyrightText: 2020 Volker Krause <vkrause@kde.org>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #ifndef KOSMINDOORMAP_PAINTERRENDERER_H
 #define KOSMINDOORMAP_PAINTERRENDERER_H
 
 #include "kosmindoormap_export.h"
 
 #include <KOSMIndoorMap/SceneGraphItem>
 
 class QPainter;
 
 namespace KOSMIndoorMap {
 
 class SceneGraph;
 class View;
 
 /** QPainter-based renderer of a SceneGraph.
  *  Trying to keep this somewhat backend-agnostic to possibly implement a 3D renderer in the future.
  */
 class KOSMINDOORMAP_EXPORT PainterRenderer
 {
 public:
     explicit PainterRenderer();
     ~PainterRenderer();
 
     void setPainter(QPainter *painter);
     void render(const SceneGraph &sg, View *view);
 
 private:
     void beginRender();
     void beginPhase(SceneGraphItemPayload::RenderPhase phase);
     void prepareBatch(SceneGraphItemPayload::RenderPhase phase);
     void renderBackground(const QColor &bgColor);
     void renderPolygon(PolygonItem *item, SceneGraphItemPayload::RenderPhase phase);
     void renderMultiPolygon(MultiPolygonItem *item, SceneGraphItemPayload::RenderPhase phase);
     void renderPolyline(PolylineItem *item, SceneGraphItemPayload::RenderPhase phase);
     void renderLabel(LabelItem *item, SceneGraphItemPayload::RenderPhase phase);
     void renderForeground(const QColor &bgColor);
     void endRender();
 
     template <typename T>
     void renderPolygonFill(PolygonBaseItem *item, const T &geom);
     template <typename T>
     void renderPolygonLine(PolygonBaseItem *item, const T &geom);
     template <typename T>
     void renderPolygonCasing(PolygonBaseItem *item, const T &geom);
 
     [[nodiscard]] double mapToSceneWidth(double width, Unit unit) const;
     // inverse view transformation with translation applied
     // needed for textured brushes
     [[nodiscard]] QTransform brushTransform() const;
 
     QPainter *m_painter = nullptr;
     View *m_view = nullptr;
 
     std::vector<SceneGraphItemPayload*> m_renderBatch; // member rather than function-local to preserve allocations
 };
 
 }
 
 #endif // KOSMINDOORMAP_PAINTERRENDERER_H