QCRadialGradient Class

QRectF rect1(50, 50, 200, 200);
QCRadialGradient rg(rect1.center(), 100, 50);
rg.setStartColor("#fdbb2d");
rg.setEndColor("#b21f1f");
painter.setFillStyle(rg);
painter.beginPath();
painter.ellipse(rect1);
painter.fill();

Member Function Documentation

QCRadialGradient::QCRadialGradient()

Constructs a default radial gradient. Gradient center position is (0, 0). Gradient outer radius is 100.0 and inner radius is 0.0. Gradient start color is white (255, 255, 255) and end color transparent black (0, 0, 0, 0).

QCRadialGradient::QCRadialGradient(QPointF center, float outerRadius, float innerRadius = 0.0f)

Constructs a radial gradient. Gradient center position is center. Gradient outer radius is outerRadius and inner radius is innerRadius. Gradient start color is white (255,255,255) and end color transparent black (0, 0, 0, 0).

QCRadialGradient::QCRadialGradient(float centerX, float centerY, float outerRadius, float innerRadius = 0.0f)

Constructs a radial gradient. Gradient center position is ( centerX, centerY). Gradient outer radius is outerRadius and inner radius is innerRadius. Gradient start color is white (255, 255, 255) and end color transparent black (0, 0, 0, 0).

QPointF QCRadialGradient::centerPosition() const

Returns the center point of radial gradient.

See also setCenterPosition().

float QCRadialGradient::innerRadius() const

Returns the inner radius of radial gradient.

See also setInnerRadius().

float QCRadialGradient::outerRadius() const

Returns the outer radius of radial gradient.

See also setOuterRadius().

void QCRadialGradient::setCenterPosition(QPointF center)

Sets the center point of radial gradient to center.

See also centerPosition().

void QCRadialGradient::setCenterPosition(float x, float y)

Sets the center point of radial gradient to ( x, y).

void QCRadialGradient::setInnerRadius(float radius)

Sets the inner radius of radial gradient to radius. Start color will be drawn at this radius from center position. The default inner radius is 0.0 meaning that gradient starts directly from center position.

See also innerRadius().

void QCRadialGradient::setOuterRadius(float radius)

Sets the outer radius of radial gradient to radius. End color will be drawn at this radius from center position.

See also outerRadius().