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59 lines
1.3 KiB
C++
59 lines
1.3 KiB
C++
#pragma once
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#include <QCanvasCustomBrush>
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#include <QCanvasPainterItemRenderer>
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#include <QHash>
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#include <QRectF>
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#include <QVector4D>
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#include <qcontainerfwd.h>
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#include "stroke.hpp"
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namespace ZShell::internal {
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struct BrushEntry {
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QCanvasCustomBrush brush;
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qint64 holeToken = -1; // hole generation this brush was built with
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};
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class StrokeCanvasRenderer final : public QCanvasPainterItemRenderer {
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public:
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void synchronizeData(QCanvasPainterItem* item) override;
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void paint(QCanvasPainter* painter) override;
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private:
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QCanvasCustomBrush& brushFor(const QColor& color);
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void updateBrushHole();
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void drawStroke(
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QCanvasPainter* painter,
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const QVector<QPointF>& points,
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const QColor& color,
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qreal width,
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bool polyline);
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void drawHoverCursor(
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QCanvasPainter* painter,
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const QPointF& point,
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qreal penWidth,
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QColor penColor,
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bool isDrawing);
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QColor m_penColor;
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qreal m_penWidth = 4.0;
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bool m_hoverVisible = false;
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QPointF m_hoverPoint;
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bool m_isDrawing = false;
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QRectF m_hole;
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qreal m_holeRadius = 0.0;
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qreal m_devicePixelRatio = 1.0;
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QVector4D m_lastHoleData1;
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QVector4D m_lastHoleData3;
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QVector4D m_lastHoleData4;
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qint64 m_holeToken = 0;
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QVector<Stroke> m_strokes;
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Stroke m_currentStroke;
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QVector<int> m_pendingGroupRemovals;
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QHash<QRgb, BrushEntry> m_brushes;
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};
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}; // namespace ZShell::internal
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