horizontallabeleddivider.h

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*
*      Copyright (c) 2011-2012 Hewlett-Packard Development Company, L.P.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
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#ifndef HORIZONTALLABELEDDIVIDER_H_
#define HORIZONTALLABELEDDIVIDER_H_


#include "horizontaldivider.h"

#include <QFont>
#include <QTextLayout>

class HorizontalLabeledDivider : public HorizontalDivider
{
        Q_OBJECT

public:

        static HorizontalLabeledDivider * NewHorizontalLabeledDivider(const QString& label,quint32 width,PixmapObject * p_dividerPixmapObject);
        virtual ~HorizontalLabeledDivider();

        // override the geometry logic from the base class...it must be done in order to make use of "alignment" geometry, if it is used
        //      see the icongeometrysettings.h/cpp files
        // essentially, it's a way to trick the users of this class into thinking the geometry is actually different (intended only to be < than the actual geom)
        virtual QRectF geometry() const;
        virtual QRectF positionRelativeGeometry() const;

        virtual bool resize(const QSize& newSize);
        virtual bool resize(quint32 newWidth,quint32 newHeight);

        virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option=0,QWidget *widget=0);
        virtual void paint(QPainter *painter, const QRectF& sourceRect);
        virtual void paint(QPainter *painter, const QRectF& sourceRect,qint32 renderOpts);
        virtual void paintOffscreen(QPainter *painter);

        //TODO: temporary; remove when a better system (like styles) goes in place
        static QFont staticLabelFontForHDiv();

        static QRectF AGEOM(const QRectF& geom);        //alignment geom, if used

protected Q_SLOTS:

        virtual void slotPixmapObjectInvalidated();


protected:

        HorizontalLabeledDivider();
        HorizontalLabeledDivider(const QRectF& geom,const QString& label,PixmapObject * p_dividerPixmapObject);

        //      PREREQUISITE: m_geom must be set correctly
        //  RESULT: m_textLayoutObject will have the correct layout, m_labelGeom will be set correctly for the current label,
        virtual void    redoLabelTextLayout();          //run this after the geometry changes. This is absolutely necessary
        // ALSO run this after the label changes. don't ask, just do it. Not necessary now, but it most likely will be later

        //      PREREQUISITE: m_geom and m_labelGeom are set
        //      RESULT: m_labelPosICS is set
        virtual void    recalculateLabelPosition();

        // PREREQUISITE: m_geom, m_labelGeom, m_labelPosICS, m_labelPixmapSpacing must be set correctly
        // RESULT:      m_pixmapGeom and m_pixmapPosICS will be set
        virtual void    recalculateDividerPixmapSizeAndPosition();

        QRectF                                  m_alignmentGeomPrecomputed;             //populated only if StaticElementSettings::horizLabeledDivider_useAlignmentGeom is set true

        QPointer<PixmapObject>  m_qp_divPixmap;                         // the graphic part of the divider
        QPoint                          m_pixmapPosICS;                         //the position of the div pixmap (see base class) in ICS
        QRect                                   m_pixmapGeom;                           // using QRect so that it's easier on paint() (it doesn't have to pixalign constantly)

        qreal                                   m_labelPixmapSpacing;           //between the label and pixmap

        //text layout for the label
        QString                                 m_labelString;
        QColor                                  m_labelFontColor;

        QPoint                                  m_labelPosICS;                          // position in ICS, and corresponds to m_labelGeom
        QRect                                   m_labelGeom;

        QTextLayout                             m_textLayoutObject;

};

#endif /* HORIZONTALLABELEDDIVIDER_H_ */