WPF-布局样式练习-Day02-聊天气泡
美男子玩编程
共 12437字，需浏览 25分钟
·
2022-04-15 19:59
一、前言
本章主要讲解对话气泡布局和DataTemplateSelector。
二、模仿原型
以下为模仿界面的界面布局分析结果，为三列布局，左中右。
三、模仿成果与过程
3.1 布局
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="80">ColumnDefinition>
<ColumnDefinition Width="188.8*">ColumnDefinition>
<ColumnDefinition Width="508.8*">ColumnDefinition>
Grid.ColumnDefinitions>
<Border Padding="11.2,20.8" Background="#303942">
Border>
<StackPanel Background="#363f48" Grid.Column="1" Orientation="Vertical">
StackPanel>
<DockPanel Grid.Column="2" Background="White">
DockPanel>
Grid>3.2 左列内容
<Border Padding="11.2,20.8" Background="#303942">
<DockPanel>
<Ellipse Width="44" DockPanel.Dock="Top" Height="44" VerticalAlignment="Top">
<Ellipse.Fill>
<ImageBrush ImageSource="/boy.png"/>
Ellipse.Fill>
Ellipse>
<Button local:ControlExtensions.Data="{StaticResource chat}"
Style="{StaticResource IconButton}" DockPanel.Dock="Top" Margin="0,34,0,16"/>
<Button DockPanel.Dock="Top" local:ControlExtensions.Data="{StaticResource user}"
Style="{StaticResource IconButton}" Margin="0,16"/>
<Button DockPanel.Dock="Bottom" local:ControlExtensions.Data="{StaticResource history}"
Style="{StaticResource IconButton}">Button>
<Button DockPanel.Dock="Bottom" local:ControlExtensions.Data="{StaticResource record}"
Style="{StaticResource IconButton}" Margin="0,16">Button>
<ContentControl>ContentControl>
DockPanel>
Border>3.3 对话列表
<StackPanel Background="#363f48" Grid.Column="1" Orientation="Vertical">
<TextBox Style="{DynamicResource TextBoxStyle}"
HorizontalContentAlignment="Center"
VerticalContentAlignment="Center"
Margin="20,15" Padding="10,8">TextBox>
<Border Padding="20,10" Background="#464f58">
<DockPanel>
<Ellipse Width="44" Height="44" DockPanel.Dock="Left" ClipToBounds="True" SnapsToDevicePixels="True">
<Ellipse.Fill>
<ImageBrush ImageSource="/grile.png"/>
Ellipse.Fill>
Ellipse>
<StackPanel Margin="10,10,0,0">
<TextBlock Text="苯乙烯顾问-飞飞" FontSize="14" Foreground="#eeeeef">TextBlock>
<TextBlock Text="看起来只能是这样" FontSize="10" Margin="0,5" Foreground="#929394">TextBlock>
StackPanel>
DockPanel>
Border>
<Border Padding="20,10">
<DockPanel>
<Ellipse Width="44" Height="44" DockPanel.Dock="Left" ClipToBounds="True" SnapsToDevicePixels="True">
<Ellipse.Fill>
<ImageBrush ImageSource="/boy.png"/>
Ellipse.Fill>
Ellipse>
<StackPanel Margin="10,10,0,0">
<TextBlock Text="苯乙烯顾问-白白" FontSize="14" Foreground="#eeeeef">TextBlock>
<TextBlock Text="看起来只能是这样" FontSize="10" Margin="0,5" Foreground="#929394">TextBlock>
StackPanel>
DockPanel>
Border>
StackPanel>3.4 当前对话框
<DockPanel Grid.Column="2" Background="White">
<Border DockPanel.Dock="Top" Padding="20,0" Height="62" BorderBrush="#ededed" SnapsToDevicePixels="True" BorderThickness="0,0,0,1.5">
<TextBlock HorizontalAlignment="Left" VerticalAlignment="Center" Text="妞妞" FontSize="18">TextBlock>
Border>
<Border DockPanel.Dock="Bottom" BorderBrush="#ededed" SnapsToDevicePixels="True" Padding="5" BorderThickness="0,1.5,0,0" Height="150">
Border>
<ScrollViewer VerticalScrollBarVisibility="Auto" BorderThickness="0">
ScrollViewer>
DockPanel>3.5 聊天气泡样式
改样式内容为方便模板查找器查找，可以放到App.xaml作为全局资源。
1）接收样式
<DataTemplate x:Key="chatother" DataType="{x:Type local:ChatContent}">
<StackPanel Orientation="Horizontal">
<Ellipse Width="34" Height="34" ClipToBounds="True" SnapsToDevicePixels="True" VerticalAlignment="Top">
<Ellipse.Fill>
<ImageBrush ImageSource="/grile.png"/>
Ellipse.Fill>
Ellipse>
<Path Fill="#9EEA6A" Stretch="Uniform" Height="10" SnapsToDevicePixels="True" HorizontalAlignment="Right" VerticalAlignment="Top" Margin="10,16,-1,0">
<Path.Data>
M316.906804 600.553647l369.209487 292.918955a166.898002 166.898002 0 0 1 65.243759 130.527398V0a167.017642 167.017642 0 0 1-65.243759 130.527398L316.906804 423.446353a110.707014 110.707014 0 0 0-22.093547 154.973867 110.667134 110.667134 0 0 0 22.093547 22.133427z
Path.Data>
Path>
<Border Padding="10,10,10,10" Margin="0,2" VerticalAlignment="Center"
HorizontalAlignment="Left" CornerRadius="2" ClipToBounds="True"
SnapsToDevicePixels="True" Background="#9EEA6A">
<StackPanel>
<TextBlock Text="{Binding Content}" TextWrapping="Wrap" MaxWidth="100" FontSize="14" Foreground="Black">TextBlock>
StackPanel>
Border>
StackPanel>
DataTemplate>效果如下：
2）发送样式
<DataTemplate x:Key="chatowner" DataType="{x:Type local:ChatContent}">
<StackPanel HorizontalAlignment="Right" Orientation="Horizontal">
<Border Padding="10,10,10,10" Margin="0,2" VerticalAlignment="Top"
HorizontalAlignment="Right" CornerRadius="2" ClipToBounds="True"
SnapsToDevicePixels="True" Background="#9EEA6A">
<StackPanel>
<TextBlock Text="{Binding Content}" TextWrapping="Wrap" MaxWidth="100" FontSize="14" Foreground="Black">TextBlock>
StackPanel>
Border>
<Path Fill="#9EEA6A" Stretch="Uniform" Height="10" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="-1,16,10,0">
<Path.Data>
M377.4780684453485 789.1111583709719l279.6549224853515-279.65492248535156-278.8075160980225-278.80751609802246z
Path.Data>
Path>
<Ellipse Width="34" Height="34" VerticalAlignment="Top" ClipToBounds="True" SnapsToDevicePixels="True">
<Ellipse.Fill>
<ImageBrush ImageSource="/boy.png"/>
Ellipse.Fill>
Ellipse>
StackPanel>
DataTemplate>效果如下：
3）数据类型实体
public class ChatContent
{
//用户
public string Name { get; set; }
//类型
public int Type { get; set; }
//消息内容
public object Content { get; set; }
//日期
public DateTime DateTime { get; set; }
//状态
public int Status { get; set; }
}4）模板选择器内容
///
/// Chat数据模板选择器
///
public class ChatTemplateSelector: DataTemplateSelector
{
public override DataTemplate SelectTemplate(object item, DependencyObject container)
{
ChatContent content = item as ChatContent;
if (content != null)
{
DataTemplate template;
//判定数据实体类型选择不同的数据模板
if (content.Type == 1)
{
template = Application.Current.TryFindResource("chatother") as DataTemplate;
}
else
{
template = Application.Current.TryFindResource("chatowner") as DataTemplate;
}
return template;
}
return null;
}
}5）页面模板使用
HorizontalContentAlignment="Stretch"
ItemTemplateSelector="{StaticResource ChatTemplateSelector}" x:Name="chats" Background="White" Margin="10">
需要获取demo的读者，可私信作者留言WPFDay2。
四、页面资源
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Width="{TemplateBinding Width}"
Height="{TemplateBinding Width}"
Fill="{TemplateBinding Foreground}">
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