重新想象 Windows 8 Store Apps (14) 控件 UI: RenderTransform, Projection, Clip, UseLayoutRounding

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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
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