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429 lines
12 KiB
Plaintext
429 lines
12 KiB
Plaintext
/** \ingroup gui
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* \class QgsColorWidget
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* A base class for interactive color widgets. Widgets can either allow setting a single component of
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* a color (eg the red or green components), or an entire color. The QgsColorWidget also keeps track of
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* any explicitly set hue for the color, so that this information is not lost when the widget is
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* set to a color with an ambiguous hue (eg black or white shades).
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* \note Added in version 2.5
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*/
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class QgsColorWidget : QWidget
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{
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%TypeHeaderCode
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#include <qgscolorwidgets.h>
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%End
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public:
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/*! Specifies the color component which the widget alters
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*/
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enum ColorComponent
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{
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Multiple = 0, /*!< widget alters multiple color components */
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Red, /*!< red component of color */
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Green, /*!< green component of color */
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Blue, /*!< blue component of color */
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Hue, /*!< hue component of color (based on HSV model) */
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Saturation, /*!< saturation component of color (based on HSV model) */
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Value, /*!< value component of color (based on HSV model) */
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Alpha /*!< alpha component (opacity) of color */
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};
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/**Construct a new color widget.
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* @param parent parent QWidget for the widget
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* @param component color component the widget alters
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*/
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QgsColorWidget( QWidget* parent /TransferThis/ = 0, const ColorComponent component = Multiple );
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virtual ~QgsColorWidget();
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/**Returns the current color for the widget
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* @returns current widget color
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* @see setColor
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*/
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QColor color() const;
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/**Returns the color component which the widget controls
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* @returns color component for widget
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* @see setComponent
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*/
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ColorComponent component() const;
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/**Returns the current value of the widget's color component
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* @returns value of color component, or -1 if widget has multiple components or an invalid color
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* set
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* @see setComponentValue
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* @see component
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*/
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int componentValue() const;
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/**Create an icon for dragging colors
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* @param color for icon
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*/
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static QPixmap createDragIcon( const QColor &color );
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public slots:
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/**Sets the color for the widget
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* @param color widget color
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* @param emitSignals set to true to emit the colorChanged signal after setting color
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* @see color
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*/
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virtual void setColor( const QColor &color, const bool emitSignals = false );
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/**Sets the color component which the widget controls
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* @param component color component for widget
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* @see component
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*/
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virtual void setComponent( const ColorComponent component );
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/**Alters the widget's color by setting the value for the widget's color component
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* @param value value for widget's color component. This value is automatically
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* clipped to the range of valid values for the color component.
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* @see componentValue
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* @see setComponent
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* @note this method has no effect if the widget is set to the QgsColorWidget::Multiple
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* component
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*/
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virtual void setComponentValue( const int value );
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signals:
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/**Emitted when the widget's color changes
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* @param color new widget color
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*/
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void colorChanged( const QColor &color );
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protected:
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/**Returns the range of valid values for the color widget's component
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* @returns maximum value allowed for color component, or -1 if widget has multiple components
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*/
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int componentRange() const;
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/**Returns the range of valid values a color component
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* @returns maximum value allowed for color component
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*/
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int componentRange( const ColorComponent component ) const;
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/**Returns the value of a component of the widget's current color. This method correctly
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* handles hue values when the color has an ambiguous hue (eg black or white shades)
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* @param component color component to return
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* @returns value of color component, or -1 if widget has an invalid color set
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* @see hue
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*/
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int componentValue( const ColorComponent component ) const;
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/**Returns the hue for the widget. This may differ from the hue for the QColor returned by color(),
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* as QColor returns a hue of -1 if the color's hue is ambiguous (eg, if the saturation is zero).
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* @returns explicitly set hue for widget
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*/
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int hue() const;
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/**Alters a color by modifiying the value of a specific color component
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* @param color color to alter
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* @param component color component to alter
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* @param newValue new value of color component. Values are automatically clipped to a
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* valid range for the color component.
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*/
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void alterColor( QColor& color, const QgsColorWidget::ColorComponent component, const int newValue ) const;
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/**Generates a checkboard pattern pixmap for use as a background to transparent colors
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* @returns checkerboard pixmap
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*/
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static const QPixmap& transparentBackground();
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//Reimplemented to accept dragged colors
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void dragEnterEvent( QDragEnterEvent * e );
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//Reimplemented to accept dropped colors
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void dropEvent( QDropEvent *e );
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};
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/** \ingroup gui
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* \class QgsColorWheel
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* A color wheel widget. This widget consists of an outer ring which allows for hue selection, and an
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* inner rotating triangle which allows for saturation and value selection.
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* \note Added in version 2.5
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*/
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class QgsColorWheel : QgsColorWidget
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{
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%TypeHeaderCode
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#include <qgscolorwidgets.h>
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%End
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public:
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/**Constructs a new color wheel widget.
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* @param parent parent QWidget for the widget
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*/
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QgsColorWheel( QWidget* parent /TransferThis/ = 0 );
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virtual ~QgsColorWheel();
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void paintEvent( QPaintEvent* event );
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public slots:
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virtual void setColor( const QColor &color, const bool emitSignals = false );
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protected:
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virtual void resizeEvent( QResizeEvent *event );
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virtual void mouseMoveEvent( QMouseEvent *event );
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virtual void mousePressEvent( QMouseEvent *event );
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virtual void mouseReleaseEvent( QMouseEvent *event );
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};
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/** \ingroup gui
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* \class QgsColorBox
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* A color box widget. This widget consists of a two dimensional rectangle filled with color
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* variations, where a different color component varies along both the horizontal and vertical
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* axis.
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* \note Added in version 2.5
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*/
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class QgsColorBox : QgsColorWidget
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{
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%TypeHeaderCode
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#include <qgscolorwidgets.h>
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%End
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public:
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/**Construct a new color box widget.
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* @param parent parent QWidget for the widget
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* @param component constant color component for the widget. The color components
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* which vary along the horizontal and vertical axis are automatically assigned
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* based on this constant color component.
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*/
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QgsColorBox( QWidget* parent /TransferThis/ = 0, const ColorComponent component = Value );
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virtual ~QgsColorBox();
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virtual QSize sizeHint() const;
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void paintEvent( QPaintEvent* event );
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virtual void setComponent( const ColorComponent component );
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public slots:
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virtual void setColor( const QColor &color, const bool emitSignals = false );
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protected:
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virtual void resizeEvent( QResizeEvent *event );
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virtual void mouseMoveEvent( QMouseEvent *event );
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virtual void mousePressEvent( QMouseEvent *event );
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};
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/** \ingroup gui
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* \class QgsColorRampWidget
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* A color ramp widget. This widget consists of an interactive box filled with a color which varies along
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* its length by a single color component (eg, varying saturation from 0 to 100%).
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* \note Added in version 2.5
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*/
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class QgsColorRampWidget : QgsColorWidget
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{
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%TypeHeaderCode
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#include <qgscolorwidgets.h>
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%End
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public:
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/*! Specifies the orientation of a color ramp
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*/
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enum Orientation
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{
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Horizontal, /*!< horizontal ramp */
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Vertical /*!< vertical ramp */
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};
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/**Construct a new color ramp widget.
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* @param parent parent QWidget for the widget
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* @param component color component which varies along the ramp
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* @param orientation orientation for widget
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*/
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QgsColorRampWidget( QWidget* parent /TransferThis/ = 0,
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const ColorComponent component = QgsColorWidget::Red,
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const Orientation orientation = QgsColorRampWidget::Horizontal );
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virtual ~QgsColorRampWidget();
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virtual QSize sizeHint() const;
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void paintEvent( QPaintEvent* event );
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/**Sets the orientation for the color ramp
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* @param orientation new orientation for the ramp
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* @see orientation
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*/
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void setOrientation( const Orientation orientation );
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/**Fetches the orientation for the color ramp
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* @returns orientation for the ramp
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* @see setOrientation
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*/
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Orientation orientation() const;
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/**Sets the margin between the edge of the widget and the ramp
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* @param margin margin around the ramp
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* @see interiorMargin
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*/
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void setInteriorMargin( const int margin );
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/**Fetches the margin between the edge of the widget and the ramp
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* @returns margin around the ramp
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* @see setInteriorMargin
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*/
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int interiorMargin() const;
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/**Sets whether the ramp should be drawn within a frame
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* @param showFrame set to true to draw a frame around the ramp
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* @see showFrame
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*/
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void setShowFrame( const bool showFrame );
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/**Fetches whether the ramp is drawn within a frame
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* @returns true if a frame is drawn around the ramp
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* @see setShowFrame
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*/
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bool showFrame() const;
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/**Sets the size for drawing the triangular markers on the ramp
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* @param markerSize marker size in pixels
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*/
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void setMarkerSize( const int markerSize );
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signals:
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/**Emitted when the widget's color component value changes
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* @param value new value of color component
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*/
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void valueChanged( const int value );
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protected:
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virtual void mouseMoveEvent( QMouseEvent *event );
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virtual void mousePressEvent( QMouseEvent *event );
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virtual void keyPressEvent( QKeyEvent * event );
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};
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/** \ingroup gui
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* \class QgsColorSliderWidget
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* A composite horizontal color ramp widget and associated spinbox for manual value entry.
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* \note Added in version 2.5
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*/
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class QgsColorSliderWidget : QgsColorWidget
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{
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%TypeHeaderCode
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#include <qgscolorwidgets.h>
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%End
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public:
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/**Construct a new color slider widget.
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* @param parent parent QWidget for the widget
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* @param component color component which is controlled by the slider
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*/
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QgsColorSliderWidget( QWidget* parent /TransferThis/ = 0, const ColorComponent component = QgsColorWidget::Red );
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virtual ~QgsColorSliderWidget();
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virtual void setComponent( const ColorComponent component );
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virtual void setComponentValue( const int value );
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virtual void setColor( const QColor &color, const bool emitSignals = false );
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};
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/** \ingroup gui
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* \class QgsColorTextWidget
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* A line edit widget which displays colors as text and accepts string representations
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* of colors.
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* \note Added in version 2.5
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*/
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class QgsColorTextWidget : QgsColorWidget
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{
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%TypeHeaderCode
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#include <qgscolorwidgets.h>
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%End
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public:
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/**Construct a new color line edit widget.
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* @param parent parent QWidget for the widget
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*/
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QgsColorTextWidget( QWidget* parent /TransferThis/ = 0 );
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virtual ~QgsColorTextWidget();
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virtual void setColor( const QColor &color, const bool emitSignals = false );
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protected:
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void resizeEvent( QResizeEvent * event );
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};
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/** \ingroup gui
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* \class QgsColorPreviewWidget
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* A preview box which displays one or two colors as swatches.
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* \note Added in version 2.5
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*/
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class QgsColorPreviewWidget : QgsColorWidget
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{
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%TypeHeaderCode
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#include <qgscolorwidgets.h>
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%End
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public:
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/**Construct a new color preview widget.
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* @param parent parent QWidget for the widget
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*/
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QgsColorPreviewWidget( QWidget* parent /TransferThis/ = 0 );
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virtual ~QgsColorPreviewWidget();
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void paintEvent( QPaintEvent* event );
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/**Returns the secondary color for the widget
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* @returns secondary widget color, or an invalid color if the widget
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* has no secondary color
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* @see color
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* @see setColor2
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*/
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QColor color2() const;
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public slots:
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/**Sets the second color for the widget
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* @param color secondary widget color. Set to an invalid color to prevent
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* drawing of a secondary color
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* @see setColor
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* @see color2
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*/
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virtual void setColor2( const QColor& color );
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protected:
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//reimplemented to allow dragging colors
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void mousePressEvent( QMouseEvent* e );
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//reimplemented to click colors
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void mouseReleaseEvent( QMouseEvent* e );
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//reimplemented to allow dragging colors
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void mouseMoveEvent( QMouseEvent *e );
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};
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