重新想象 Windows 8 Store Apps (14) - 控件 UI: RenderTransform, Projection, Clip, UseLayoutRounding
原文:重新想象 Windows 8 Store Apps (14) - 控件 UI: RenderTransform, Projection, Clip, UseLayoutRounding
重新想象 Windows 8 Store Apps (14) - 控件 UI: RenderTransform, Projection, Clip, UseLayoutRounding
作者：webabcd
介绍
重新想象 Windows 8 Store Apps 之 控件 UI
- RenderTransform - 变换（用于做位移，旋转，缩放，扭曲等变换）
- Projection - 映射
- Clip - 剪裁并显示 UIElement 的指定区域
- UseLayoutRounding - 是否使用完整像素布局
示例
1、演示 RenderTransform 的应用
Controls/UI/RenderTransform.xaml
<Page
x:Class="XamlDemo.Controls.UI.RenderTransform"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:XamlDemo.Controls.UI"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"> <Grid Background="Transparent">
<Grid Margin="120 0 0 0"> <!--
RenderTransform - 变换（用于做位移，旋转，缩放，扭曲等变换）
--> <Grid HorizontalAlignment="Left" VerticalAlignment="Top">
<Rectangle Width="200" Height="100" StrokeDashArray="3,1" Stroke="Blue" StrokeThickness="3" />
<Rectangle Width="200" Height="100" Fill="Yellow" Stroke="Red" StrokeThickness="3" Opacity="0.3">
<Rectangle.RenderTransform> <!--RotateTransform - 旋转变换（顺时针）-->
<!--
Angle - 旋转角度。默认值 0
CenterX - 旋转中心点的 X 轴坐标。默认值 0
CenterY - 旋转中心点的 Y 轴坐标。默认值 0
-->
<RotateTransform Angle="15" CenterX="100" CenterY="50" /> </Rectangle.RenderTransform>
</Rectangle>
</Grid> <Grid Margin="400 0 0 0" HorizontalAlignment="Left" VerticalAlignment="Top">
<Rectangle Width="200" Height="100" StrokeDashArray="3,1" Stroke="Blue" StrokeThickness="3" />
<!--
RenderTransformOrigin - 位置变换的中心点
-->
<Rectangle Width="200" Height="100" Fill="Yellow" Stroke="Red" StrokeThickness="3" Opacity="0.3" RenderTransformOrigin="0.5,0.5">
<Rectangle.RenderTransform>
<RotateTransform Angle="15" />
</Rectangle.RenderTransform>
</Rectangle>
</Grid> <Grid Margin="800 0 0 0" HorizontalAlignment="Left" VerticalAlignment="Top">
<Rectangle Width="200" Height="100" StrokeDashArray="3,1" Stroke="Blue" StrokeThickness="3" />
<Rectangle Width="200" Height="100" Fill="Yellow" Stroke="Red" StrokeThickness="3" Opacity="0.3">
<Rectangle.RenderTransform> <!--TranslateTransform - 平移变换-->
<!--
X - 水平方向上移动的距离。默认值 0
Y - 垂直方向上移动的距离。默认值 0
-->
<TranslateTransform X="100" Y="10" /> </Rectangle.RenderTransform>
</Rectangle>
</Grid> <Grid Margin="0 200 0 0" HorizontalAlignment="Left" VerticalAlignment="Top">
<Rectangle Width="200" Height="100" StrokeDashArray="3,1" Stroke="Blue" StrokeThickness="3" />
<Rectangle Width="200" Height="100" Fill="Yellow" Stroke="Red" StrokeThickness="3" Opacity="0.3">
<Rectangle.RenderTransform> <!--ScaleTransform - 缩放变换-->
<!--
ScaleX - X 轴方向上缩放的倍数。默认值 1
ScaleY - Y 轴方向上缩放的倍数。默认值 1
CenterX - 缩放中心点的 X 轴坐标。默认值 0
CenterY - 缩放中心点的 Y 轴坐标。默认值 0
-->
<ScaleTransform ScaleX="1.1" ScaleY="1.3" CenterX="100" CenterY="50" /> </Rectangle.RenderTransform>
</Rectangle>
</Grid> <Grid Margin="400 200 0 0" HorizontalAlignment="Left" VerticalAlignment="Top">
<Rectangle Width="200" Height="100" StrokeDashArray="3,1" Stroke="Blue" StrokeThickness="3" />
<Rectangle Width="200" Height="100" Fill="Yellow" Stroke="Red" StrokeThickness="3" Opacity="0.3">
<Rectangle.RenderTransform> <!--SkewTransform - 扭曲变换（典型应用：在 二维 对象中模拟 三维 深度）-->
<!--
CenterX - 扭曲中心点的 X 轴坐标。默认值 0
CenterY - 扭曲中心点的 Y 轴坐标。默认值 0
AngleX - X 轴扭曲角度，Y 轴绕原点旋转（逆时针）。CenterX 对此值所产生的呈现结果没有影响。默认值 0
AngleY - Y 轴扭曲角度，X 轴绕原点旋转（顺时针）。CenterY 对此值所产生的呈现结果没有影响。默认值 0
-->
<SkewTransform AngleX="30" AngleY="5" CenterX="0" CenterY="0" /> </Rectangle.RenderTransform>
</Rectangle>
</Grid> <Grid Margin="800 200 0 0" HorizontalAlignment="Left" VerticalAlignment="Top">
<Rectangle Width="200" Height="100" StrokeDashArray="3,1" Stroke="Blue" StrokeThickness="3" />
<Rectangle Width="200" Height="100" Fill="Yellow" Stroke="Red" StrokeThickness="3" Opacity="0.3">
<Rectangle.RenderTransform> <!--TransformGroup - 多个 Transform 组成的复合变换-->
<TransformGroup>
<TranslateTransform X="100" Y="10" />
<RotateTransform Angle="15" CenterX="100" CenterY="50" />
</TransformGroup> </Rectangle.RenderTransform>
</Rectangle>
</Grid> <!--
CompositeTransform - 将多种变换方式合而为一
CenterX - 变换中心点的 X 坐标
CenterY - 变换中心点的 Y 坐标
Rotation - 顺时针旋转角度
ScaleX - 沿 X 轴方向上的缩放比例
ScaleY - 沿 Y 轴方向上的缩放比例
SkewX - X 轴扭曲角度
SkewY - Y 轴扭曲角度
TranslateX - 沿 X 轴方向上的平移距离
TranslateY - 沿 Y 轴方向上的平移距离
-->
<Grid Margin="0 400 0 0" HorizontalAlignment="Left" VerticalAlignment="Top">
<Rectangle Width="200" Height="100" StrokeDashArray="3,1" Stroke="Blue" StrokeThickness="3" />
<Rectangle Width="200" Height="100" Fill="Yellow" Stroke="Red" StrokeThickness="3" Opacity="0.3">
<Rectangle.RenderTransform>
<CompositeTransform SkewX="30" Rotation="60" ScaleX="0.6" ScaleY="0.3" />
</Rectangle.RenderTransform>
</Rectangle>
</Grid> <!--
MatrixTransform - 仿射矩阵变换 |X| |M11（默认值 1） M21（默认值 0） 0|
|Y| = |x y 1| * |M12（默认值 0） M22（默认值 1） 0|
|1| |OffsetX（默认值 0） OffsetY（默认值 0） 1| X = x * M11 + y * M12 + OffsetX
Y = x * M21 + y * M22 + OffsetY 利用 MatrixTransform 实现平移、旋转、缩放、扭曲的 Demo 详见 http://www.cnblogs.com/webabcd/archive/2008/11/03/1325150.html
-->
<Grid Margin="400 400 0 0" HorizontalAlignment="Left" VerticalAlignment="Top">
<Rectangle Width="200" Height="100" StrokeDashArray="3,1" Stroke="Blue" StrokeThickness="3" />
<Rectangle Width="200" Height="100" Fill="Yellow" Stroke="Red" StrokeThickness="3" Opacity="0.3">
<Rectangle.RenderTransform>
<!--
m11, m12, m21, m22, offsetX, offsetY
-->
<MatrixTransform Matrix="1, 0.5, 0, 1, 30, 10" />
</Rectangle.RenderTransform>
</Rectangle>
</Grid> </Grid>
</Grid>
</Page>
2、演示 Projection 的应用
Controls/UI/Projection.xaml
<Page
x:Class="XamlDemo.Controls.UI.Projection"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:XamlDemo.Controls.UI"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"> <Grid Background="Transparent">
<Grid Margin="120 0 0 0"> <!--
Projection - 映射 PlaneProjection - 平面映射，使 UIElement 实现 3D 效果
RotationX, RotationY, RotationZ - 绕 X轴, Y轴, Z轴 旋转的角度
CenterOfRotationX, CenterOfRotationY, CenterOfRotationZ - X轴, Y轴, Z轴 旋转中心点的相对位置（CenterOfRotationX, CenterOfRotationY 默认值为 0.5 ， CenterOfRotationZ 默认值为 0）
GlobalOffsetX, GlobalOffsetY, GlobalOffsetZ - 沿 X轴, Y轴, Z轴 的偏移量，此 3 个方向与屏幕的 3 个方向相同
LocalOffsetX, LocalOffsetY, LocalOffsetZ - 沿 X轴, Y轴, Z轴 的偏移量，此 3 个方向与相关的 UIElement 当前的 3 个方向相同 Matrix3DProjection - 矩阵映射
--> <Grid HorizontalAlignment="Center" VerticalAlignment="Center">
<Rectangle Width="200" Height="100" StrokeDashArray="3,1" Stroke="Blue" StrokeThickness="3" />
<Rectangle Width="200" Height="100" Fill="Yellow" Stroke="Red" StrokeThickness="3" Opacity="0.3">
<Rectangle.Projection>
<PlaneProjection x:Name="planeProjection" />
</Rectangle.Projection>
</Rectangle>
</Grid> <StackPanel>
<TextBlock FontSize="14.667" Text="RotationX:" Margin="0 10 0 0" />
<Slider Width="150" Minimum="0" Maximum="360" HorizontalAlignment="Left" VerticalAlignment="Center" Margin="0 -10 0 0"
Value="{Binding ElementName=planeProjection, Path=RotationX, Mode=TwoWay}" /> <TextBlock FontSize="14.667" Text="RotationY:" Margin="0 -10 0 0" />
<Slider Width="150" Minimum="0" Maximum="360" HorizontalAlignment="Left" VerticalAlignment="Center" Margin="0 -10 0 0"
Value="{Binding ElementName=planeProjection, Path=RotationY, Mode=TwoWay}" /> <TextBlock FontSize="14.667" Text="RotationZ:" Margin="0 -10 0 0" />
<Slider Width="150" Minimum="0" Maximum="360" HorizontalAlignment="Left" VerticalAlignment="Center" Margin="0 -10 0 0"
Value="{Binding ElementName=planeProjection, Path=RotationZ, Mode=TwoWay}" /> <TextBlock FontSize="14.667" Text="LocalOffsetX:" Margin="0 -10 0 0" />
<Slider Width="150" Minimum="-150" Maximum="150" HorizontalAlignment="Left" VerticalAlignment="Center" Margin="0 -10 0 0"
Value="{Binding ElementName=planeProjection, Path=LocalOffsetX, Mode=TwoWay}" /> <TextBlock FontSize="14.667" Text="LocalOffsetY:" Margin="0 -10 0 0" />
<Slider Width="150" Minimum="-150" Maximum="150" HorizontalAlignment="Left" VerticalAlignment="Center" Margin="0 -10 0 0"
Value="{Binding ElementName=planeProjection, Path=LocalOffsetY, Mode=TwoWay}" /> <TextBlock FontSize="14.667" Text="LocalOffsetZ:" Margin="0 -10 0 0" />
<Slider Width="150" Minimum="-150" Maximum="150" HorizontalAlignment="Left" VerticalAlignment="Center" Margin="0 -10 0 0"
Value="{Binding ElementName=planeProjection, Path=LocalOffsetZ, Mode=TwoWay}" /> <TextBlock FontSize="14.667" Text="GlobalOffsetX:" Margin="0 -10 0 0" />
<Slider Width="150" Minimum="-150" Maximum="150" HorizontalAlignment="Left" VerticalAlignment="Center" Margin="0 -10 0 0"
Value="{Binding ElementName=planeProjection, Path=GlobalOffsetX, Mode=TwoWay}" /> <TextBlock FontSize="14.667" Text="GlobalOffsetY:" Margin="0 -10 0 0" />
<Slider Width="150" Minimum="-150" Maximum="150" HorizontalAlignment="Left" VerticalAlignment="Center" Margin="0 -10 0 0"
Value="{Binding ElementName=planeProjection, Path=GlobalOffsetY, Mode=TwoWay}" /> <TextBlock FontSize="14.667" Text="GlobalOffsetZ:" Margin="0 -10 0 0" />
<Slider Width="150" Minimum="-150" Maximum="150" HorizontalAlignment="Left" VerticalAlignment="Center" Margin="0 -10 0 0"
Value="{Binding ElementName=planeProjection, Path=GlobalOffsetZ, Mode=TwoWay}" />
</StackPanel> </Grid>
</Grid>
</Page>
3、演示 Clip 的应用
Controls/UI/Clip.xaml
<Page
x:Class="XamlDemo.Controls.UI.Clip"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:XamlDemo.Controls.UI"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"> <Grid Background="Transparent">
<StackPanel Margin="120 0 0 0"> <Grid HorizontalAlignment="Left" VerticalAlignment="Top">
<Rectangle Width="200" Height="100" Fill="Red" />
<Rectangle Width="200" Height="100" Fill="Green"> <!--
Clip - 剪裁并显示 UIElement 的指定区域 注：win8 中只能通过 RectangleGeometry 剪裁 UIElement
-->
<Rectangle.Clip>
<RectangleGeometry Rect="10 10 50 50" />
</Rectangle.Clip>
</Rectangle>
</Grid> </StackPanel>
</Grid>
</Page>
4、演示 UseLayoutRounding 的应用
Controls/UI/UseLayoutRounding.xaml
<Page
x:Class="XamlDemo.Controls.UI.UseLayoutRounding"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:XamlDemo.Controls.UI"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"> <Grid Background="Transparent">
<StackPanel Margin="120 0 0 0"> <!--
UseLayoutRounding - 是否使用完整像素布局。默认值为 true
举例：
1、如果设置了Margin="1.6"（非完整像素）
2、那么UseLayoutRounding="true"时，则容器的外边距不相等；UseLayoutRounding="false"时，则容器的外边距相等
-->
<Grid Width="200" Height="200" HorizontalAlignment="Left" UseLayoutRounding="True">
<Border BorderBrush="#FF884909" Background="#FFFBECA3" BorderThickness="1"></Border>
<Border BorderBrush="#FF884909" Background="#FFFBECA3" BorderThickness="1" Margin="1.6"></Border>
</Grid> <Grid Width="200" Height="200" Margin="0 10 0 0" HorizontalAlignment="Left" UseLayoutRounding="False">
<Border BorderBrush="#FF884909" Background="#FFFBECA3" BorderThickness="1"></Border>
<Border BorderBrush="#FF884909" Background="#FFFBECA3" BorderThickness="1" Margin="1.6"></Border>
</Grid> </StackPanel>
</Grid>
</Page>
OK
[源码下载]
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