VisLU Flow 0.1
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The QtColorTriangle class provides a triangular color selection widget. More...
Public Slots | |
void | setColor (const QColor &col) |
Signals | |
void | colorChanged (const QColor &col) |
Public Member Functions | |
QtColorTriangle (QWidget *parent=0) | |
~QtColorTriangle () | |
QSize | sizeHint () const |
int | heightForWidth (int w) const |
void | polish () |
QColor | color () const |
Protected Member Functions | |
void | paintEvent (QPaintEvent *) |
void | mouseMoveEvent (QMouseEvent *) |
void | mousePressEvent (QMouseEvent *) |
void | mouseReleaseEvent (QMouseEvent *) |
void | keyPressEvent (QKeyEvent *e) |
void | resizeEvent (QResizeEvent *) |
void | drawTrigon (QImage *p, const QPointF &a, const QPointF &b, const QPointF &c, const QColor &color) |
The QtColorTriangle class provides a triangular color selection widget.
This widget uses the HSV color model, and is therefore useful for selecting colors by eye.
The triangle in the center of the widget is used for selecting saturation and value, and the surrounding circle is used for selecting hue.
Use setColor() and color() to set and get the current color.
colortriangle.png
QtColorTriangle::QtColorTriangle | ( | QWidget * | parent = 0 | ) |
Constructs a color triangle widget with the given parent.
QtColorTriangle::~QtColorTriangle | ( | ) |
Destructs the color triangle.
QtColorTriangle::colorChanged | ( | const QColor & | color | ) | [signal] |
Whenever the color triangles color changes this signal is emitted with the new color.
int QtColorTriangle::heightForWidth | ( | int | w | ) | const |
Forces the triangle widget to always be square. Returns the value w.
void QtColorTriangle::paintEvent | ( | QPaintEvent * | e | ) | [protected] |
First copies a background image of the hue donut and its background color onto the frame, then draws the color triangle, and finally the selectors.
QSize QtColorTriangle::sizeHint | ( | ) | const |