ImageBrush 类

定义

使用图像绘制区域。Paints an area with an image.

public ref class ImageBrush sealed : System::Windows::Media::TileBrush
public sealed class ImageBrush : System.Windows.Media.TileBrush
type ImageBrush = class
    inherit TileBrush
Public NotInheritable Class ImageBrush
Inherits TileBrush
继承

注解

ImageBrush 是一种 TileBrush,它将其内容定义为图像,它由其 ImageSource 属性指定。An ImageBrush is a type of TileBrush that defines its content as an image, which is specified by its ImageSource property. 您可以控制图像的拉伸、对齐和平铺方式,从而生成模式和其他效果。You can control how the image is stretched, aligned, and tiled, enabling you to produce patterns and other effects. 以下图像显示了可通过 ImageBrush实现的一些效果。The following images show some effects that can be achieved with an ImageBrush.

ImageBrush 输出示例ImageBrush output examples
System.windows.media.imagebrush> 可以绘制形状、控件、文本等An ImageBrush can paint shapes, controls, text, and more

如前所述,ImageBrush 使用 ImageSource绘制区域。As mentioned, an ImageBrush paints an area with an ImageSource. ImageBrush 一起使用的最常见 ImageSource 类型是 BitmapImage,它描述位图图形。The most common type of ImageSource to use with an ImageBrush is a BitmapImage, which describes a bitmap graphic. 您可以使用 DrawingImage 来绘制 Drawing 对象,但改用 DrawingBrush 会更简单。You can use a DrawingImage to paint using a Drawing object, but it is simpler to use a DrawingBrush instead. 有关 ImageSource 对象的详细信息,请参阅图像处理概述For more information about ImageSource objects, see Imaging Overview.

有关 ImageBrush 功能的详细信息,请参阅通过图像、绘图和视觉对象进行绘制概述。For more information about ImageBrush features, see Painting with Images, Drawings, and Visuals overview.

Freezable 功能Freezable Features

由于 ImageBrush 类继承自 Freezable,因此 ImageBrush 对象获取几个特殊功能,其中包括:它们可以声明为、在多个对象之间共享、变为只读以提高性能、克隆以及使线程安全。Because the ImageBrush class inherits from Freezable, ImageBrush objects gain several special features, which include the following: they can be declared as , shared among multiple objects, made read-only to improve performance, cloned, and made thread safe. 有关 Freezable 对象提供的功能的详细信息,请参阅可冻结对象概述For more information about the features provided by Freezable objects, see Freezable Objects Overview.

构造函数

ImageBrush()

不使用任何内容初始化 ImageBrush 类的新实例。Initializes a new instance of the ImageBrush class with no content.

ImageBrush(ImageSource)

初始化 ImageBrush 类的新实例,该实例利用指定的图像绘制区域。Initializes a new instance of the ImageBrush class that paints an area with the specified image.

字段

ImageSourceProperty

标识 ImageSource 依赖项属性。Identifies the ImageSource dependency property.

属性

AlignmentX

获取或设置 TileBrush 基本磁贴中内容的水平对齐方式。Gets or sets the horizontal alignment of content in the TileBrush base tile.

(继承自 TileBrush)
AlignmentY

获取或设置 TileBrush 基本图块中内容的垂直对齐方式。Gets or sets the vertical alignment of content in the TileBrush base tile.

(继承自 TileBrush)
CanFreeze

获取一个值,该值指示是否可将对象变为不可修改。Gets a value that indicates whether the object can be made unmodifiable.

(继承自 Freezable)
DependencyObjectType

获取对此实例的 DependencyObjectType 类型进行包装的 CLRCLRGets the DependencyObjectType that wraps the CLRCLR type of this instance.

(继承自 DependencyObject)
Dispatcher

获取与此 Dispatcher 关联的 DispatcherObjectGets the Dispatcher this DispatcherObject is associated with.

(继承自 DispatcherObject)
HasAnimatedProperties

获取一个值,该值指示一个或多个 AnimationClock 对象是否与此对象的任何依赖项属性相关联。Gets a value that indicates whether one or more AnimationClock objects is associated with any of this object's dependency properties.

(继承自 Animatable)
ImageSource

获取或设置此 ImageBrush 显示的图像。Gets or sets the image displayed by this ImageBrush.

IsFrozen

获取一个值,该值指示对象当前是否可修改。Gets a value that indicates whether the object is currently modifiable.

(继承自 Freezable)
IsSealed

获取一个值,该值指示此实例当前是否为密封的(只读)。Gets a value that indicates whether this instance is currently sealed (read-only).

(继承自 DependencyObject)
Opacity

获取或设置 Brush 的不透明度。Gets or sets the degree of opacity of a Brush.

(继承自 Brush)
RelativeTransform

获取或设置使用相对坐标应用到画笔的转换。Gets or sets the transformation that is applied to the brush using relative coordinates.

(继承自 Brush)
Stretch

获取或设置一个值,它指定此 TileBrush 的内容如何拉伸才适合其磁贴。Gets or sets a value that specifies how the content of this TileBrush stretches to fit its tiles.

(继承自 TileBrush)
TileMode

获取或设置一个值,该值指定在基本图块小于输出区时 TileBrush 如何填充你正在绘画的区域。Gets or sets a value that specifies how a TileBrush fills the area that you are painting if the base tile is smaller than the output area.

(继承自 TileBrush)
Transform

获取或设置应用于画笔的转换。Gets or sets the transformation that is applied to the brush. 此转换在完成画笔输出的映射和定位后应用。This transformation is applied after the brush's output has been mapped and positioned.

(继承自 Brush)
Viewbox

获取或设置 TileBrush 图块中内容的位置和尺寸。Gets or sets the position and dimensions of the content in a TileBrush tile.

(继承自 TileBrush)
ViewboxUnits

获取或设置一个值,该值指定 Viewbox 值是相对于 TileBrush 内容的边界框而言,还是绝对值。Gets or sets a value that specifies whether the Viewbox value is relative to the bounding box of the TileBrush contents or whether the value is absolute.

(继承自 TileBrush)
Viewport

获取或设置 TileBrush 的基本图块的位置和尺寸。Gets or sets the position and dimensions of the base tile for a TileBrush.

(继承自 TileBrush)
ViewportUnits

获取或设置 BrushMappingMode 枚举,该枚举指定 Viewport 的值(该值指示 TileBrush 基本图块的大小和位置)是否是相对于输出区域的大小。Gets or sets a BrushMappingMode enumeration that specifies whether the value of the Viewport, which indicates the size and position of the TileBrush base tile, is relative to the size of the output area.

(继承自 TileBrush)

方法

ApplyAnimationClock(DependencyProperty, AnimationClock)

AnimationClock 应用到指定的 DependencyPropertyApplies an AnimationClock to the specified DependencyProperty. 如果该属性已进行动画处理,则使用 SnapshotAndReplace 切换行为。If the property is already animated, the SnapshotAndReplace handoff behavior is used.

(继承自 Animatable)
ApplyAnimationClock(DependencyProperty, AnimationClock, HandoffBehavior)

AnimationClock 应用到指定的 DependencyPropertyApplies an AnimationClock to the specified DependencyProperty. 如果该属性已进行动画处理,则使用指定的 HandoffBehaviorIf the property is already animated, the specified HandoffBehavior is used.

(继承自 Animatable)
BeginAnimation(DependencyProperty, AnimationTimeline)

将动画应用于指定 DependencyPropertyApplies an animation to the specified DependencyProperty. 动画会在呈现下一帧时启动。The animation is started when the next frame is rendered. 如果指定属性已进行动画处理,则使用 SnapshotAndReplace 切换行为。If the specified property is already animated, the SnapshotAndReplace handoff behavior is used.

(继承自 Animatable)
BeginAnimation(DependencyProperty, AnimationTimeline, HandoffBehavior)

将动画应用于指定 DependencyPropertyApplies an animation to the specified DependencyProperty. 动画会在呈现下一帧时启动。The animation is started when the next frame is rendered. 如果指定的属性已进行动画处理,则使用指定的 HandoffBehaviorIf the specified property is already animated, the specified HandoffBehavior is used.

(继承自 Animatable)
CheckAccess()

确定调用线程是否可以访问此 DispatcherObjectDetermines whether the calling thread has access to this DispatcherObject.

(继承自 DispatcherObject)
ClearValue(DependencyProperty)

清除属性的本地值。Clears the local value of a property. 要清除的属性由 DependencyProperty 标识符指定。The property to be cleared is specified by a DependencyProperty identifier.

(继承自 DependencyObject)
ClearValue(DependencyPropertyKey)

清除只读属性的本地值。Clears the local value of a read-only property. 要清除的属性由 DependencyPropertyKey 指定。The property to be cleared is specified by a DependencyPropertyKey.

(继承自 DependencyObject)
Clone()

创建此 ImageBrush 的可修改克隆,从而深度复制此对象的值。Creates a modifiable clone of this ImageBrush, making deep copies of this object's values.

CloneCore(Freezable)

使用基(未经过动画处理的)属性值使该实例成为指定 Freezable 的克隆(深层复制)。Makes the instance a clone (deep copy) of the specified Freezable using base (non-animated) property values.

(继承自 Freezable)
CloneCurrentValue()

创建此 ImageBrush 对象的可修改复本,从而深度复制此对象的当前值。Creates a modifiable clone of this ImageBrush object, making deep copies of this object's current values.

CloneCurrentValueCore(Freezable)

使用当前属性值使该实例成为指定 Freezable 的可修改克隆(深层复制)。Makes the instance a modifiable clone (deep copy) of the specified Freezable using current property values.

(继承自 Freezable)
CoerceValue(DependencyProperty)

对指定依赖属性的值进行强制。Coerces the value of the specified dependency property. 通过对调用方 CoerceValueCallback 上存在的依赖属性的属性元数据中所指定的任何 DependencyObject 函数进行调用来完成此操作。This is accomplished by invoking any CoerceValueCallback function specified in property metadata for the dependency property as it exists on the calling DependencyObject.

(继承自 DependencyObject)
CreateInstance()

初始化 Freezable 类的新实例。Initializes a new instance of the Freezable class.

(继承自 Freezable)
CreateInstanceCore()

在派生类中实现时,创建 Freezable 派生类的新实例。When implemented in a derived class, creates a new instance of the Freezable derived class.

(继承自 Freezable)
Equals(Object)

确定提供的 DependencyObject 是否等效于当前 DependencyObjectDetermines whether a provided DependencyObject is equivalent to the current DependencyObject.

(继承自 DependencyObject)
Freeze()

使当前对象不可修改,并且将其 IsFrozen 属性设置为 trueMakes the current object unmodifiable and sets its IsFrozen property to true.

(继承自 Freezable)
FreezeCore(Boolean)

使此 Animatable 对象成为不可修改的对象,或确定是否可使其成为不可修改的对象。Makes this Animatable object unmodifiable or determines whether it can be made unmodifiable.

(继承自 Animatable)
GetAnimationBaseValue(DependencyProperty)

返回指定的 DependencyProperty 的未经过动画处理的值。Returns the non-animated value of the specified DependencyProperty.

(继承自 Animatable)
GetAsFrozen()

使用基(未经过动画处理的)属性值创建 Freezable 的冻结副本。Creates a frozen copy of the Freezable, using base (non-animated) property values. 由于副本已冻结,因此将通过引用复制任何冻结的子对象。Because the copy is frozen, any frozen sub-objects are copied by reference.

(继承自 Freezable)
GetAsFrozenCore(Freezable)

让该实例成为指定的 Freezable 的冻结克隆,前者使用基(非动画的)属性值。Makes the instance a frozen clone of the specified Freezable using base (non-animated) property values.

(继承自 Freezable)
GetContentBounds(Rect)

获取 TileBrush 内容的当前边界。Obtains the current bounds of the TileBrush content.

(继承自 TileBrush)
GetCurrentValueAsFrozen()

使用当前属性值创建 Freezable 的冻结副本。Creates a frozen copy of the Freezable using current property values. 由于副本已冻结,因此将通过引用复制任何冻结的子对象。Because the copy is frozen, any frozen sub-objects are copied by reference.

(继承自 Freezable)
GetCurrentValueAsFrozenCore(Freezable)

使当前实例成为指定的 Freezable 的冻结复本。Makes the current instance a frozen clone of the specified Freezable. 如果对象具有动画依赖属性,则复制其当前的动画值。If the object has animated dependency properties, their current animated values are copied.

(继承自 Freezable)
GetHashCode()

获取此 DependencyObject 的哈希代码。Gets a hash code for this DependencyObject.

(继承自 DependencyObject)
GetLocalValueEnumerator()

创建一个专用的枚举数,用于确定哪些依赖项属性在此 DependencyObject 上具有以本地方式设置的值。Creates a specialized enumerator for determining which dependency properties have locally set values on this DependencyObject.

(继承自 DependencyObject)
GetType()

获取当前实例的 TypeGets the Type of the current instance.

(继承自 Object)
GetValue(DependencyProperty)

DependencyObject 的此实例返回依赖属性的当前有效值。Returns the current effective value of a dependency property on this instance of a DependencyObject.

(继承自 DependencyObject)
InvalidateProperty(DependencyProperty)

重新评估指定依赖属性的有效值。Re-evaluates the effective value for the specified dependency property.

(继承自 DependencyObject)
MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(继承自 Object)
OnChanged()

修改当前 Freezable 对象时调用。Called when the current Freezable object is modified.

(继承自 Freezable)
OnFreezablePropertyChanged(DependencyObject, DependencyObject)

确保为刚刚设置的 DependencyObjectType 数据成员建立适当的上下文指针。Ensures that appropriate context pointers are established for a DependencyObjectType data member that has just been set.

(继承自 Freezable)
OnFreezablePropertyChanged(DependencyObject, DependencyObject, DependencyProperty)

此成员支持 Windows Presentation Foundation (WPF)Windows Presentation Foundation (WPF) 基础结构,但不能在代码中直接使用。This member supports the Windows Presentation Foundation (WPF)Windows Presentation Foundation (WPF) infrastructure and is not intended to be used directly from your code.

(继承自 Freezable)
OnPropertyChanged(DependencyPropertyChangedEventArgs)

重写 OnPropertyChanged(DependencyPropertyChangedEventArgs)DependencyObject 实现,以同时调用任何响应类型 Freezable 不断变化的依赖属性的 Changed 处理程序。Overrides the DependencyObject implementation of OnPropertyChanged(DependencyPropertyChangedEventArgs) to also invoke any Changed handlers in response to a changing dependency property of type Freezable.

(继承自 Freezable)
ReadLocalValue(DependencyProperty)

如果存在,则返回依赖属性的本地值。Returns the local value of a dependency property, if it exists.

(继承自 DependencyObject)
ReadPreamble()

确保正在从有效的线程访问 FreezableEnsures that the Freezable is being accessed from a valid thread. Freezable 的继承者必须在任何 API 一开始读取不属于依赖项对象的数据成员时调用此方法。Inheritors of Freezable must call this method at the beginning of any API that reads data members that are not dependency properties.

(继承自 Freezable)
SetCurrentValue(DependencyProperty, Object)

设置依赖属性的值而不更改其值源。Sets the value of a dependency property without changing its value source.

(继承自 DependencyObject)
SetValue(DependencyProperty, Object)

设置依赖属性的本地值,该值由其依赖属性标识符指定。Sets the local value of a dependency property, specified by its dependency property identifier.

(继承自 DependencyObject)
SetValue(DependencyPropertyKey, Object)

设置一个只读依赖属性的本地值,该值由依赖属性的 DependencyPropertyKey 标识符指定。Sets the local value of a read-only dependency property, specified by the DependencyPropertyKey identifier of the dependency property.

(继承自 DependencyObject)
ShouldSerializeProperty(DependencyProperty)

返回一个值,该值指示序列化进程是否应序列化所提供的依赖属性的值。Returns a value that indicates whether serialization processes should serialize the value for the provided dependency property.

(继承自 DependencyObject)
ToString()

返回此 Brush 的字符串表示形式。Return string representation of this Brush.

(继承自 Brush)
ToString(IFormatProvider)

基于指定的区域性特定格式设置信息创建此对象的字符串表示形式。Creates a string representation of this object based on the specified culture-specific formatting information.

(继承自 Brush)
VerifyAccess()

强制调用线程具有此 DispatcherObject 的访问权限。Enforces that the calling thread has access to this DispatcherObject.

(继承自 DispatcherObject)
WritePostscript()

引发 FreezableChanged 事件并调用其 OnChanged() 方法。Raises the Changed event for the Freezable and invokes its OnChanged() method. Freezable 派生的类应在修改的类成员不存储为依赖属性的任何 API 的末尾调用此方法。Classes that derive from Freezable should call this method at the end of any API that modifies class members that are not stored as dependency properties.

(继承自 Freezable)
WritePreamble()

验证 Freezable 是否未被冻结,并且是否正在从有效的线程上下文中访问它。Verifies that the Freezable is not frozen and that it is being accessed from a valid threading context. Freezable 的继承项应当在任何 API 一开始写入不属于依赖项属性的数据成员时调用此方法。Freezable inheritors should call this method at the beginning of any API that writes to data members that are not dependency properties.

(继承自 Freezable)

事件

Changed

在修改 Freezable 或其包含的对象时发生。Occurs when the Freezable or an object it contains is modified.

(继承自 Freezable)

显式接口实现

IFormattable.ToString(String, IFormatProvider)

使用指定格式对当前实例的值设置格式。Formats the value of the current instance using the specified format.

(继承自 Brush)

适用于

另请参阅