8f205040dc
Different canvas clip reference frames are handled now, and updating the clip nodes should not longer crash. Unfortunately, clips set on groups don't work yet, further work is needed here.
146 lines
3.5 KiB
C++
146 lines
3.5 KiB
C++
//
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// Copyright (C) 2017 James Turner zakalawe@mac.com
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your 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
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#ifndef FGCANVASELEMENT_H
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#define FGCANVASELEMENT_H
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#include <QObject>
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#include <QTransform>
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#include <QColor>
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#include <QVariant>
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#include <vector>
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class LocalProp;
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class FGCanvasPaintContext;
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class FGCanvasGroup;
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class CanvasItem;
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class QQuickItem;
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class CanvasConnection;
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/**
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* Coordinate reference frame (eg. "clip" property)
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*/
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enum class ReferenceFrame
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{
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GLOBAL, ///< Global coordinates
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PARENT, ///< Coordinates relative to parent coordinate frame
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LOCAL ///< Coordinates relative to local coordinates (parent
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/// coordinates with local transformations applied)
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};
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class FGCanvasElement : public QObject
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{
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Q_OBJECT
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public:
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explicit FGCanvasElement(FGCanvasGroup* pr, LocalProp* prop);
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void paint(FGCanvasPaintContext* context) const;
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QTransform combinedTransform() const;
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bool isVisible() const;
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int zIndex() const;
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const FGCanvasGroup* parentGroup() const;
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const FGCanvasGroup* rootGroup() const;
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CanvasConnection* connection() const;
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static bool isStyleProperty(QByteArray name);
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LocalProp* property() const;
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void setHighlighted(bool hilighted);
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bool isHighlighted() const;
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virtual CanvasItem* quickItem() const;
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virtual CanvasItem* createQuickItem(QQuickItem* parent);
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void requestPolish();
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void polish();
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protected:
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virtual void doPaint(FGCanvasPaintContext* context) const;
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virtual void doPolish();
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virtual bool onChildAdded(LocalProp* prop);
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virtual bool onChildRemoved(LocalProp* prop);
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virtual void doDestroy();
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const LocalProp* _propertyRoot;
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const FGCanvasGroup* _parent;
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QColor fillColor() const;
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QColor parseColorValue(QVariant value) const;
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virtual void markStyleDirty();
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QVariant getCascadedStyle(const char* name, QVariant defaultValue = QVariant()) const;
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private slots:
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void onPropDestroyed();
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private:
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void onCenterChanged(QVariant value);
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void markTransformsDirty();
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void markZIndexDirty(QVariant value);
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void onVisibleChanged(QVariant value);
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void markClipDirty();
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private:
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friend class FGCanvasGroup;
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bool _polishRequired = false;
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bool _visible = true;
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bool _highlighted = false;
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mutable bool _transformsDirty = true;
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mutable bool _styleDirty = true;
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mutable QTransform _combinedTransform;
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QPointF _center;
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mutable QColor _fillColor;
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int _zIndex = 0;
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QByteArray _svgElementId;
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mutable bool _clipDirty = true;
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mutable bool _hasClip = false;
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mutable QRectF _clipRect;
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mutable ReferenceFrame _clipFrame = ReferenceFrame::GLOBAL;
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void parseCSSClip(QByteArray value);
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float parseCSSValue(QByteArray value) const;
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};
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using FGCanvasElementVec = std::vector<FGCanvasElement*>;
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#endif // FGCANVASELEMENT_H
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