我只是想问一下你如何使用Windows Presentation Foundation从iPhone实现'Slide to Unlock'功能。
我已经看过这篇文章：iPhone slide to unlock progress bar (part 1)，并想知道你是否可以给我一些其他资源以获得良好的开端。谢谢。
答案 0 :(得分：7)
我会重新尝试滑块，因为这是最接近的控件，功能方面。
您应该捕获Value_Changed的事件，如果Value == Maximum，则滑块被“打开”。
重新设置控件会让它看起来像你的“解锁控件”。我稍后会粘贴一个例子。
- 编辑 - 有空闲时间在工作，所以我为你开始。 用法如下：
<Grid x:Name="LayoutRoot">
<Slider Margin="185,193,145,199" Style="{DynamicResource SliderStyle1}"/>
</Grid>
和ResourceDictionary：
<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d">
<LinearGradientBrush x:Key="MouseOverBrush" EndPoint="0,1" StartPoint="0,0">
<GradientStop Color="#FFF" Offset="0.0"/>
<GradientStop Color="#AAA" Offset="1.0"/>
</LinearGradientBrush>
<LinearGradientBrush x:Key="LightBrush" EndPoint="0,1" StartPoint="0,0">
<GradientStop Color="#FFF" Offset="0.0"/>
<GradientStop Color="#EEE" Offset="1.0"/>
</LinearGradientBrush>
<LinearGradientBrush x:Key="NormalBorderBrush" EndPoint="0,1" StartPoint="0,0">
<GradientStop Color="#CCC" Offset="0.0"/>
<GradientStop Color="#444" Offset="1.0"/>
</LinearGradientBrush>
<Style x:Key="SimpleScrollRepeatButtonStyle" d:IsControlPart="True" TargetType="{x:Type RepeatButton}">
<Setter Property="Background" Value="Transparent"/>
<Setter Property="BorderBrush" Value="Transparent"/>
<Setter Property="IsTabStop" Value="false"/>
<Setter Property="Focusable" Value="false"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type RepeatButton}">
<Grid>
<Rectangle Fill="{TemplateBinding Background}" Stroke="{TemplateBinding BorderBrush}" StrokeThickness="{TemplateBinding BorderThickness}"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ThumbStyle1" d:IsControlPart="True" TargetType="{x:Type Thumb}">
<Setter Property="SnapsToDevicePixels" Value="true"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Thumb}">
<Grid Width="54">
<Ellipse x:Name="Ellipse" />
<Border CornerRadius="10" >
<Border.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FFFBFBFB" Offset="0.075"/>
<GradientStop Color="Gainsboro" Offset="0.491"/>
<GradientStop Color="#FFCECECE" Offset="0.509"/>
<GradientStop Color="#FFA6A6A6" Offset="0.943"/>
</LinearGradientBrush>
</Border.Background>
</Border>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Fill" Value="{StaticResource MouseOverBrush}" TargetName="Ellipse"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Fill" Value="{StaticResource DisabledBackgroundBrush}" TargetName="Ellipse"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="SliderStyle1" TargetType="{x:Type Slider}">
<Setter Property="Background" Value="{StaticResource LightBrush}"/>
<Setter Property="BorderBrush" Value="{StaticResource NormalBorderBrush}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Slider}">
<Border CornerRadius="14" Padding="4">
<Border.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FF252525" Offset="0"/>
<GradientStop Color="#FF5C5C5C" Offset="1"/>
</LinearGradientBrush>
</Border.Background>
<Grid x:Name="GridRoot">
<TextBlock Text="Slide to unlock" HorizontalAlignment="Center" VerticalAlignment="Center" />
<!-- TickBar shows the ticks for Slider -->
<!-- The Track lays out the repeat buttons and thumb -->
<Track x:Name="PART_Track" Height="Auto">
<Track.Thumb>
<Thumb Style="{StaticResource ThumbStyle1}"/>
</Track.Thumb>
<Track.IncreaseRepeatButton>
<RepeatButton Style="{StaticResource SimpleScrollRepeatButtonStyle}" Command="Slider.IncreaseLarge" Background="Transparent"/>
</Track.IncreaseRepeatButton>
<Track.DecreaseRepeatButton>
<RepeatButton Style="{StaticResource SimpleScrollRepeatButtonStyle}" Command="Slider.DecreaseLarge" d:IsHidden="True"/>
</Track.DecreaseRepeatButton>
</Track>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="TickPlacement" Value="TopLeft"/>
<Trigger Property="TickPlacement" Value="BottomRight"/>
<Trigger Property="TickPlacement" Value="Both"/>
<Trigger Property="IsEnabled" Value="false"/>
<!-- Use a rotation to create a Vertical Slider form the default Horizontal -->
<Trigger Property="Orientation" Value="Vertical">
<Setter Property="LayoutTransform" TargetName="GridRoot">
<Setter.Value>
<RotateTransform Angle="-90"/>
</Setter.Value>
</Setter>
<!-- Track rotates itself based on orientation so need to force it back -->
<Setter TargetName="PART_Track" Property="Orientation" Value="Horizontal"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ResourceDictionary>
请注意，这是一个非常好的开始，但并不是一切。 我还将定义一个自定义控件，该控件派生自滑块并自动使用此样式。当用户向右滑动时，我也会暴露一个SlideUnlocked事件。 为了完成所有这一切，我还会添加一个动画，将拇指向左移动，以防用户将其向右拖动，但不是一直向前（完全模仿iPhone的用户体验。）
祝你好运，如果你不知道如何实施我建议的任何阶段，请随时提出。
答案 1 :(得分：0)
WPF滑块有一个“ - ”，它是值， 总是当你移动它时，值是例如十进制1,122213174所以一个“ - ”。 但另一种创建滑块的方法是Windows窗体。
创建trackBar1，最多= 100个点。 这适用于Windows窗体应用程序： 在trackBar1_mouse_up上：
if(trackBar1.Value < 100)
{
//Animation - slide back dynamicaly.
for(int i=0;i<=trackBar1.Value;i++){
int secondVal=trackBar1.Value-i;
trackBar1.Value=secondVal;
System.Threading.Thread.Sleep(15);
}
}
if(trackBar1.Value==100)
{
//sets enabled to false, then after load cannot move it.
trackBar1.Enabled=false;
MessageBox.Show("Done!");
}
这适用于WPF Slider :(在PreviewMouseUp上）
if (Convert.ToInt16(slider1.Value) < 99)
{
//Animation - slide back dynamicaly.
for (int i = 0; i < Convert.ToInt16(slider1.Value); i++)
{
int secondVal = Convert.ToInt32(slider1.Value) - i;
slider1.Value = secondVal;
System.Threading.Thread.Sleep(10);
if (secondVal < 2)
{
slider1.Value = 0;
}
}
}
if (Convert.ToInt16(slider1.Value) > 99)
{
//sets enabled to false, then after load cannot move it.
slider1.IsEnabled = false;
slider1.Value = 100;
MessageBox.Show("Done!");
}