性能

使用 Item::antialiasing property improves the appearance of a rounded rectangle at the cost of rendering performance. You should consider unsetting this property for rectangles in motion, and only set it when they are stationary.

另請參閱 圖像 .

特性文檔編製

抗鋸齒 : bool

Used to decide if the Rectangle should use antialiasing or not. 抗鋸齒 provides information on the performance implications of this property.

The default is true for Rectangles with a radius, and false otherwise.

邊框組
border.color : color
border.pixelAligned : bool
border.width : int

The width and color used to draw the border of the rectangle.

A width of 1 creates a thin line. For no line, use a width of 0 or a transparent color.

注意： The width of the rectangle's border does not affect the geometry of the rectangle itself or its position relative to other items if anchors are used.

The border is rendered within the rectangle's boundaries.

若 pixelAligned is true (the default), the rendered border width is rounded to a whole number of pixels, after device pixel ratio scaling. Setting pixelAligned to false will allow fractional border widths, which may be desirable when antialiasing 被啓用。

bottomLeftRadius : real [since 6.7]

This property holds the radius used to draw the bottom left corner.

若 bottomLeftRadius 未設置， radius will be used instead. If bottomLeftRadius is zero, the corner will be sharp.

注意： This API is considered tech preview and may change or be removed in future versions of Qt.

該特性在 Qt 6.7 引入。

另請參閱 radius , topLeftRadius , topRightRadius ，和 bottomRightRadius .

bottomRightRadius : real [since 6.7]

This property holds the radius used to draw the bottom right corner.

若 bottomRightRadius 未設置， radius will be used instead. If bottomRightRadius is zero, the corner will be sharp.

注意： This API is considered tech preview and may change or be removed in future versions of Qt.

該特性在 Qt 6.7 引入。

另請參閱 radius , topLeftRadius , topRightRadius ，和 bottomLeftRadius .

color : color

This property holds the color used to fill the rectangle.

默認顔色為白色。

The following example shows rectangles with colors specified using hexadecimal and named color notation:

Rectangle {
    color: "#00B000"
    width: 80; height: 80
}
Rectangle {
    color: "steelblue"
    y: 100; width: 80; height: 80
}
				

If both a gradient and a color are specified, the gradient will be used.

另請參閱 gradient .

gradient : var

用於填充矩形的漸變。

This property allows for the construction of simple vertical or horizontal gradients. Other gradients may be formed by adding rotation to the rectangle.

Rectangle {
    width: 80; height: 80
    color: "lightsteelblue"
}
Rectangle {
    width: 80; height: 80
    gradient: Gradient {
        GradientStop { position: 0.0; color: "lightsteelblue" }
        GradientStop { position: 1.0; color: "blue" }
    }
}
Rectangle {
    width: 80; height: 80
    gradient: Gradient {
        orientation: Gradient.Horizontal
        GradientStop { position: 0.0; color: "lightsteelblue" }
        GradientStop { position: 1.0; color: "blue" }
    }
}
Rectangle {
    width: 80; height: 80
    rotation: 90
    gradient: Gradient {
        GradientStop { position: 0.0; color: "lightsteelblue" }
        GradientStop { position: 1.0; color: "blue" }
    }
}
				

The property also accepts gradient presets from QGradient::Preset . Note however that due to Rectangle only supporting simple vertical or horizontal gradients, any preset with an unsupported angle will revert to the closest representation.

Rectangle {
    width: 80; height: 80
    gradient: Gradient.NightFade
}
Rectangle {
    width: 80; height: 80
    gradient: "SunnyMorning"
}
				

If both a gradient and a color are specified, the gradient will be used.

另請參閱 漸變 and color .

radius : real

This property holds the corner radius used to draw a rounded rectangle.

If radius is non-zero, the rectangle will be painted as a rounded rectangle, otherwise it will be painted as a normal rectangle. Individual corner radii can be set as well (see below). These values will override radius. If they are unset (by setting them to undefined ), radius will be used instead.

另請參閱 topLeftRadius , topRightRadius , bottomLeftRadius ，和 bottomRightRadius .

topLeftRadius : real [since 6.7]

This property holds the radius used to draw the top left corner.

若 topLeftRadius 未設置， radius will be used instead. If topLeftRadius is zero, the corner will be sharp.

注意： This API is considered tech preview and may change or be removed in future versions of Qt.

該特性在 Qt 6.7 引入。

另請參閱 radius , topRightRadius , bottomLeftRadius ，和 bottomRightRadius .

topRightRadius : real [since 6.7]

This property holds the radius used to draw the top right corner.

若 topRightRadius 未設置， radius will be used instead. If topRightRadius is zero, the corner will be sharp.

注意： This API is considered tech preview and may change or be removed in future versions of Qt.

該特性在 Qt 6.7 引入。

另請參閱 radius , topLeftRadius , bottomLeftRadius ，和 bottomRightRadius .