QCanvasBrush Class
QCanvasBrush 是所有QCanvasPainter 填充/描边画笔的基类。更多内容...
| 标题： | #include <QCanvasBrush> |
| CMake： | find_package(Qt6 REQUIRED COMPONENTS CanvasPainter) target_link_libraries(mytarget PRIVATE Qt6::CanvasPainter) |
| 自： | Qt 6.11 |
公共类型
| enum class | BrushType { Invalid, LinearGradient, RadialGradient, ConicalGradient, BoxGradient, …, Custom } |
公共函数
| QCanvasBrush() | |
| QCanvasBrush(QCanvasImage &&other) | |
| QCanvasBrush(const QCanvasBrush &brush) | |
| QCanvasBrush(QCanvasBrush &&other) | |
| void | swap(QCanvasBrush &other) |
| QCanvasBrush::BrushType | type() const |
| QCanvasBrush & | operator=(QCanvasBrush &&other) |
| QCanvasBrush & | operator=(const QCanvasBrush &brush) |
相关的非成员
| bool | operator!=(const QCanvasBrush &lhs, const QCanvasBrush &rhs) |
| bool | operator==(const QCanvasBrush &lhs, const QCanvasBrush &rhs) |
详细说明
QCanvasBrush 是用于 `QCanvasPainter::fill()` 和 `QCanvasPainter::stroke()` 的所有样式的基类。
成员类型文档
enum class QCanvasBrush::BrushType
指定画笔的类型。
| 常量 | 值 | 描述 |
|---|---|---|
QCanvasBrush::BrushType::Invalid | 0 | - 空画笔。 |
QCanvasBrush::BrushType::LinearGradient | 1 | - 对起始点和终点之间的颜色进行插值（QCanvasLinearGradient ） |
QCanvasBrush::BrushType::RadialGradient | 2 | - 对围绕焦点的圆上，焦点与端点之间的颜色进行插值（QCanvasRadialGradient ）。 |
QCanvasBrush::BrushType::ConicalGradient | 3 | - 围绕中心点进行颜色插值（QCanvasConicalGradient ）。 |
QCanvasBrush::BrushType::BoxGradient | 4 | - 在圆角矩形上进行颜色插值（QCanvasBoxGradient ）。 |
QCanvasBrush::BrushType::BoxShadow | 5 | - 生成柔和的圆角矩形阴影（QCanvasBoxShadow ）。 |
QCanvasBrush::BrushType::ImagePattern | 6 | - 使用指定的图像和重复模式创建图案（QCanvasImagePattern ）。 |
QCanvasBrush::BrushType::GridPattern | 7 | - 使用指定的网格创建图案（QCanvasGridPattern ）。 |
QCanvasBrush::BrushType::Custom | 1000 | - 创建自定义着色器画笔（QCanvasCustomBrush ）。 |
另请参阅 type()。
成员函数文档
QCanvasBrush::QCanvasBrush()
创建了一个无效的画笔。
[noexcept implicit] QCanvasBrush::QCanvasBrush(QCanvasImage &&other)
从other 创建一个新的QCanvasBrush对象。
QCanvasBrush::QCanvasBrush(const QCanvasBrush &brush)
创建一个画笔，该画笔是给定brush 的副本。
[constexpr noexcept default] QCanvasBrush::QCanvasBrush(QCanvasBrush &&other)
通过“Move”操作构造一个QCanvasBrush 实例。
[noexcept] void QCanvasBrush::swap(QCanvasBrush &other)
将此画笔替换为other 。此操作非常快速，且从未失败。
QCanvasBrush::BrushType QCanvasBrush::type() const
返回画笔的类型。
[noexcept] QCanvasBrush &QCanvasBrush::operator=(QCanvasBrush &&other)
将other 通过move-assign操作赋值给此QCanvasBrush 实例。
QCanvasBrush &QCanvasBrush::operator=(const QCanvasBrush &brush)
将给定的brush 分配给此画笔，并返回对此画笔的引用。
相关的非成员
[noexcept] bool operator!=(const QCanvasBrush &lhs, const QCanvasBrush &rhs)
如果画笔lhs 与rhs 不同，则返回true ；否则返回false 。
另请参阅 operator==()。
[noexcept] bool operator==(const QCanvasBrush &lhs, const QCanvasBrush &rhs)
如果画笔lhs 等于rhs ，则返回true ；否则返回false 。
画笔按值进行比较，比较两个QCanvasBrush 的结果与比较其所创建的具体画笔（例如QCanvasGridPattern ）的结果相同。
另请参阅 operator!=()。
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