Jim Evins
153 lines
3.4 KiB
C++
153 lines
3.4 KiB
C++
/* View.h
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*
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* Copyright (C) 2013 Jim Evins <evins@snaught.com>
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*
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* This file is part of gLabels-qt.
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*
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* gLabels-qt is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* gLabels-qt is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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 gLabels-qt. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef glabels_View_h
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#define glabels_View_h
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#include <QGraphicsView>
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class QGraphicsScene;
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class QGraphicsItemGroup;
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namespace glabels
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{
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// Forward References
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class LabelModel;
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class LabelModelObject;
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//////////////////////////////////////////////
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//////////////////////////////////////////////
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// View
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//////////////////////////////////////////////
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//////////////////////////////////////////////
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class View : public QGraphicsView
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{
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Q_OBJECT
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/////////////////////////////////////
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// Lifecycle
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/////////////////////////////////////
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public:
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View( QWidget *parent = 0 );
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/////////////////////////////////////
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// Signals
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/////////////////////////////////////
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signals:
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void zoomChanged();
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void pointerMoved( double x, double y );
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void pointerExited();
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/////////////////////////////////////
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// Parameters
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/////////////////////////////////////
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public:
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inline double zoom() const;
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/////////////////////////////////////
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// Model
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/////////////////////////////////////
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public:
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void setModel( LabelModel* model );
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/////////////////////////////////////
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// Visibility operations
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/////////////////////////////////////
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public:
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void setGridVisible( bool visibleFlag );
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void setMarkupVisible( bool visibleFlag );
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/////////////////////////////////////
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// Zoom operations
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/////////////////////////////////////
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public:
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void zoomIn();
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void zoomOut();
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void zoom1To1();
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void zoomToFit();
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bool isZoomMax() const;
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bool isZoomMin() const;
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private:
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void setZoomReal( double zoom, bool zoomToFitFlag );
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/////////////////////////////////////
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// Event handlers
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/////////////////////////////////////
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protected:
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void resizeEvent( QResizeEvent* event );
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void mouseMoveEvent( QMouseEvent* event );
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void leaveEvent( QEvent* event );
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/////////////////////////////////////
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// Private methods
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/////////////////////////////////////
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private:
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void clearLayer( QGraphicsItemGroup* layer );
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void createLabelLayer();
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void createGridLayer();
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void createMarkupLayer();
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void addObjectToObjectLayer( LabelModelObject* object );
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void createForegroundLayer();
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/////////////////////////////////////
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// Private data
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/////////////////////////////////////
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private:
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QGraphicsScene* mScene;
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QGraphicsItemGroup* mLabelLayer;
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QGraphicsItemGroup* mGridLayer;
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QGraphicsItemGroup* mMarkupLayer;
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QGraphicsItemGroup* mObjectLayer;
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QGraphicsItemGroup* mForegroundLayer;
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double mZoom;
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bool mZoomToFitFlag;
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LabelModel* mModel;
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};
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/////////////////////////////////
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// INLINE METHODS
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/////////////////////////////////
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inline double View::zoom() const
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{
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return mZoom;
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}
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}
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#endif // glabels_View_h
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