qwt3d_label.h

#ifndef QWT3D_LABEL_H
#define QWT3D_LABEL_H
 
#include <qpixmap.h>
#include <qimage.h>
#include <qfont.h>
#include <qpainter.h>
#include <qfontmetrics.h>
 
#include "qwt3d_drawable.h"
 
namespace Qwt3D
{
 
class QWT3D_EXPORT Label : public Drawable
{
    QWT_DECLARE_PRIVATE(Label)
 
public:
    Label();
    ~Label() override;
    Label(const Label& other);
    Label(Label&& other) noexcept;
    Label& operator=(const Label& other);
    Label& operator=(Label&& other) noexcept;
    // Construct label and initialize with font
    Label(const QString& family, int pointSize, int weight = QFont::Normal, bool italic = false);
 
    // Sets the labels font
    void setFont(QString const& family, int pointSize, int weight = QFont::Normal, bool italic = false);
 
    // Fine tunes label
    void adjust(int gap);
    // Returns the gap caused by adjust()
    double gap() const;
    // Sets the labels position
    void setPosition(Qwt3D::Triple pos, ANCHOR a = BottomLeft);
    // Sets the labels position relative to screen
    void setRelPosition(Tuple rpos, ANCHOR a);
    // Receives bottom left label position
    Qwt3D::Triple first() const;
    // Receives top right label position
    Qwt3D::Triple second() const;
    // Defines an anchor point for the labels surrounding rectangle
    ANCHOR anchor() const;
    virtual void setColor(double r, double g, double b, double a = 1) override;
    virtual void setColor(Qwt3D::RGBA rgba) override;
 
    // Sets the labels string
    void setString(QString const& s);
    // Actual drawing
    virtual void draw() override;
 
    // Decides about use of PDF standard fonts for PDF output
    static void useDeviceFonts(bool val);
 
private:
    void init();
    void init(const QString& family, int pointSize, int weight = QFont::Normal, bool italic = false);
    void update();
    void convert2screen();
    double width() const;
    double height() const;
};
 
}  // ns
 
#endif  // QWT3D_LABEL_H