Wednesday, September 25, 2013

Create Custom Windows in WPF with DropShadowEffect.

In this article, I am demonstrating how to create a custom window with with DropShadowEffect, In some situations, you need to change your window ‘Standard’ view and make it ‘Rounded’.

Lets do it. It takes few lines of code and its very easy to get clear. First, you need to hide current window styles.

Set WindowStyle to none, Background to transparent and AllowsTransparency to true. It is always better to create a visual template.
One more thing to note is that while defining the window template, you must declare theContentPresenter(which ultimately contains window content) within AdornerDecorator tag (which is the adorner layer for the window) as this is a WPF requirement.

Here is the template I have created. You can download the full source code here.


<Style x:Key="WindowStyle" TargetType="{x:Type Window}">
        <Setter Property="FontSize" Value="12" />
        <Setter Property="ShowActivated" Value="True"/>
        <Setter Property="WindowState" Value="Normal"/>
        <Setter Property="ResizeMode" Value="NoResize" />
        <Setter Property="WindowStyle" Value="None" />
        <Setter Property="AllowsTransparency" Value="True" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type Window}">
                    <Border BorderBrush="Transparent" BorderThickness="0,0,1,1" CornerRadius="0,0,10,10">
                        <Grid MouseLeftButtonDown="Window_MouseLeftButtonDown" Margin="0,0,10,10">
                            <Border BorderThickness="1" Background="White" BorderBrush="{DynamicResource WinBorderBrush}">
                                <DockPanel LastChildFill="True">
                                    <Border x:Name="PART_TITLEBAR" 
                                        Margin="0" 
                                        Height="30" 
                                        DockPanel.Dock="Top" 
                                        Background="Transparent">
                                        <DockPanel LastChildFill="False" Background="{DynamicResource WinBackground}" Margin="0">
                                            <Image Source="{TemplateBinding Icon}" Height="20" Width="20" Margin="5,0"/>
                                            <TextBlock Padding="8,0,0,4" 
                                                   Margin="0"
                                                   VerticalAlignment="Center" 
                                                   FontStretch="UltraExpanded" 
                                                   Foreground="Black" 
                                                   TextTrimming="CharacterEllipsis" 
                                                   TextWrapping="NoWrap" 
                                                   Text="{TemplateBinding Title}"
                                                   FontWeight="DemiBold"
                                                   FontSize="16"/>
                                            <Button x:Name="PART_CLOSE" 
                                                DockPanel.Dock="Right" 
                                                ToolTip="Close"
                                                Click="PART_CLOSE_Click"
                                                Style="{DynamicResource WinButton}">
                                                <Image Source="../Images/close.png"/>
                                            </Button>
                                            <Button x:Name="PART_MAXIMIZE_RESTORE" 
                                                DockPanel.Dock="Right"
                                                ToolTip="Maximize"
                                                Click="PART_MAXIMIZE_RESTORE_Click"
                                                Style="{DynamicResource WinButton}">
                                                <Image Source="../Images/max.ico"/>
                                            </Button>
                                            <Button x:Name="PART_MINIMIZE" 
                                                DockPanel.Dock="Right"
                                                ToolTip="Minimize"
                                                Click="PART_MINIMIZE_Click"
                                                Style="{DynamicResource WinButton}">
                                                <Image Source="../Images/min.png"/>
                                            </Button>
                                        </DockPanel>
                                    </Border>

                                    <AdornerDecorator DockPanel.Dock="Bottom">
                                        <ContentPresenter Content="{TemplateBinding Content}" Margin="{TemplateBinding Margin}" DataContext="{TemplateBinding DataContext}" ContextMenu="{TemplateBinding ContextMenu}"/>
                                    </AdornerDecorator>

                                </DockPanel>
                            </Border>
                        </Grid>
                        <Border.Effect>
                            <DropShadowEffect Color="Black"
                              Direction="315"
                              BlurRadius="10"
                              ShadowDepth="7" />
                        </Border.Effect>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

The window created looks like the following:


How to make a part of the TextBox ReadOnly in WPF

The following post contains example how to make a part of textbox readonly.


Download Sample

<Window x:Class="PartialReadOnlyTextBox.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Icon="Resources/Images/favicon-image.png"
        Title="Partial ReadOnly TextBox"
        Height="157"
        Width="536"
        ResizeMode="NoResize"
        ShowActivated="True"
        WindowStartupLocation="CenterScreen"
        Loaded="Window_Loaded">
    <Grid>
        <TextBox Name="txtControl" VerticalAlignment="Center" ContextMenu="{x:Null}" PreviewKeyDown="txtControl_PreviewKeyDown"/>
    </Grid>
</Window>

**********************************************************************************

using System;
using System.Windows;
using System.Windows.Input;

namespace PartialReadOnlyTextBox
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        /// <summary>
        /// Get the original text.
        /// </summary>
        internal String OriginalText { get; private set; }

        public MainWindow()
        {
            InitializeComponent();
        }

        /// <summary>
        /// Handels the Loaded event of Window.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        /// <Developer>Kaushik Kumar Mistry</Developer>
        /// <DateCreated>25 Sep, 2013</DateCreated>
        /// <ModifiedBy>...</ModifiedBy>
        /// <ModifiedDate>...</ModifiedDate>
        /// <ModificationLog>...</ModificationLog>
        private void Window_Loaded(object sender, RoutedEventArgs e)
        {
            try
            {
                this.txtControl.Text = this.OriginalText = "Hello softwareKaffee.";
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
        }

        /// <summary>
        /// Handels the PreviewKeyDown event of txtControl.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        /// <Developer>Kaushik Kumar Mistry</Developer>
        /// <DateCreated>25 Sep, 2013</DateCreated>
        /// <ModifiedBy>...</ModifiedBy>
        /// <ModifiedDate>...</ModifiedDate>
        /// <ModificationLog>...</ModificationLog>
        private void txtControl_PreviewKeyDown(object sender, KeyEventArgs e)
        {
            try
            {
                if (this.txtControl.CaretIndex < this.OriginalText.Length)
                {
                    e.Handled = true;
                }
                else if (e.Key == Key.Back && this.txtControl.CaretIndex == this.OriginalText.Length)
                {
                    e.Handled = true;
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
        }
    }
}

Wednesday, September 11, 2013

Styling A ScrollViewer/Scrollbar In WPF

The following post contains a basic example of how to customize the WPF ScrollViewer/Scrollbar.


Look up MSDN, for example

The following post contains a basic example of how to customise the WPF ScrollView scroll bars. The original XAML was built using Expression Blend, and has been further simplified for clarity. The resulting ScrollView looks like this:- Download



<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

    <SolidColorBrush x:Key="DisabledForegroundBrush" Color="#BFBFBF" />
    <SolidColorBrush x:Key="NormalBrush" Color="#42BCED" />
    <SolidColorBrush x:Key="GlyphBrush" Color="Black" />

    <LinearGradientBrush x:Key="GradientBrush" StartPoint="0,0" EndPoint="0,1">
        <LinearGradientBrush.GradientStops>
            <GradientStopCollection>
                <GradientStop Color="#FFFFFF" Offset="0"/>
                <GradientStop Color="#71E4FD" Offset="0.50"/>
                <GradientStop Color="#FFFFFF" Offset="1"/>
            </GradientStopCollection>
        </LinearGradientBrush.GradientStops>
    </LinearGradientBrush>

    <LinearGradientBrush x:Key="PressedBrush"
StartPoint="0,0" EndPoint="0,1">
        <GradientBrush.GradientStops>
            <GradientStopCollection>
                <GradientStop Color="#FFFFFF" Offset="0"/>
                <GradientStop Color="#FAE78D" Offset="0.50"/>
                <GradientStop Color="#FFFFFF" Offset="1"/>
            </GradientStopCollection>
        </GradientBrush.GradientStops>
    </LinearGradientBrush>

    <LinearGradientBrush x:Key="GradientButtonBrush" StartPoint="0,1" EndPoint="0,0">
        <LinearGradientBrush.GradientStops>
            <GradientStopCollection>
                <GradientStop Color="#FFFFFF" Offset="0"/>
                <GradientStop Color="#71E4FD" Offset="1"/>
            </GradientStopCollection>
        </LinearGradientBrush.GradientStops>
    </LinearGradientBrush>

    <Style x:Key="ScrollBarLineButton" TargetType="{x:Type RepeatButton}">
        <Setter Property="SnapsToDevicePixels" Value="True"/>
        <Setter Property="OverridesDefaultStyle" Value="true"/>
        <Setter Property="Focusable" Value="false"/>
        <Setter Property="Cursor" Value="Hand"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type RepeatButton}">
                    <Border
Name="Border"
Margin="1"
CornerRadius="2"
Background="{StaticResource GradientButtonBrush}"
BorderBrush="{StaticResource NormalBrush}"
BorderThickness="1">
                        <Path
HorizontalAlignment="Center"
VerticalAlignment="Center"
Fill="{StaticResource GlyphBrush}"
Data="{Binding Path=Content,
RelativeSource={RelativeSource TemplatedParent}}" />
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsPressed" Value="true">
                            <Setter TargetName="Border" Property="Background"
Value="{StaticResource PressedBrush}" />
                        </Trigger>

                        <Trigger Property="IsEnabled" Value="false">
                            <Setter Property="Foreground"
Value="{StaticResource DisabledForegroundBrush}"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <Style x:Key="ScrollBarPageButton" TargetType="{x:Type RepeatButton}">
        <Setter Property="SnapsToDevicePixels" Value="True"/>
        <Setter Property="OverridesDefaultStyle" Value="true"/>
        <Setter Property="IsTabStop" Value="false"/>
        <Setter Property="Focusable" Value="false"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type RepeatButton}">
                    <Border Background="Transparent" />
                </ControlTemplate>
            </Setter.Value>
        </Setter>

    </Style>
    <Style x:Key="ScrollBarThumb" TargetType="{x:Type Thumb}">
        <Setter Property="SnapsToDevicePixels" Value="True"/>
        <Setter Property="OverridesDefaultStyle" Value="true"/>
        <Setter Property="IsTabStop" Value="false"/>
        <Setter Property="Focusable" Value="false"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type Thumb}">
                    <Border
CornerRadius="2"
Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="1" />
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <ControlTemplate x:Key="VerticalScrollBar"
TargetType="{x:Type ScrollBar}">
        <Grid >
            <Grid.RowDefinitions>
                <RowDefinition MaxHeight="18"/>
                <RowDefinition Height="0.00001*"/>
                <RowDefinition MaxHeight="18"/>
            </Grid.RowDefinitions>
            <Border
Grid.RowSpan="3"
CornerRadius="2"
Background="#F0F0F0" />

            <RepeatButton
Grid.Row="0"
Style="{StaticResource ScrollBarLineButton}"
Height="18"
Command="ScrollBar.LineUpCommand"
Content="M 0 4 L 8 4 L 4 0 Z" />

            <Track
Name="PART_Track"
Grid.Row="1"
Cursor="Hand"
IsDirectionReversed="true">
                <Track.DecreaseRepeatButton>

                    <RepeatButton
Style="{StaticResource ScrollBarPageButton}"
Command="ScrollBar.PageUpCommand" />
                </Track.DecreaseRepeatButton>
                <Track.Thumb>
                    <Thumb
Style="{StaticResource ScrollBarThumb}"
Margin="1,0,1,0"
Background="{StaticResource GradientBrush}"
BorderBrush="{StaticResource NormalBrush}" />
                </Track.Thumb>
                <Track.IncreaseRepeatButton>

                    <RepeatButton
Style="{StaticResource ScrollBarPageButton}"
Command="ScrollBar.PageDownCommand" />
                </Track.IncreaseRepeatButton>
            </Track>

            <RepeatButton
Grid.Row="3"
Style="{StaticResource ScrollBarLineButton}"
Height="18"
Command="ScrollBar.LineDownCommand"
Content="M 0 0 L 4 4 L 8 0 Z"/>
        </Grid>
    </ControlTemplate>

    <ControlTemplate x:Key="HorizontalScrollBar"
TargetType="{x:Type ScrollBar}">
        <Grid >
            <Grid.ColumnDefinitions>
                <ColumnDefinition MaxWidth="18"/>
                <ColumnDefinition Width="0.00001*"/>
                <ColumnDefinition MaxWidth="18"/>
            </Grid.ColumnDefinitions>
            <Border

Grid.ColumnSpan="3"
CornerRadius="3"
Background="#F0F0F0" />

            <RepeatButton
Grid.Column="0"
Style="{StaticResource ScrollBarLineButton}"
Width="18"
Command="ScrollBar.LineLeftCommand"
Content="M 4 0 L 4 8 L 0 4 Z" />
            <Track
Name="PART_Track"
Grid.Column="1"
Cursor="Hand"
IsDirectionReversed="False">
                <Track.DecreaseRepeatButton>
                    <RepeatButton
Style="{StaticResource ScrollBarPageButton}"
Command="ScrollBar.PageLeftCommand" />
                </Track.DecreaseRepeatButton>
                <Track.Thumb>

                    <Thumb
Style="{StaticResource ScrollBarThumb}"
Margin="0,1,0,1"
Background="{StaticResource GradientBrush}"
BorderBrush="{StaticResource NormalBrush}" />
                </Track.Thumb>
                <Track.IncreaseRepeatButton>
                    <RepeatButton
Style="{StaticResource ScrollBarPageButton}"
Command="ScrollBar.PageRightCommand" />
                </Track.IncreaseRepeatButton>

            </Track>

            <RepeatButton
Grid.Column="3"
Style="{StaticResource ScrollBarLineButton}"
Width="18"
Command="ScrollBar.LineRightCommand"
Content="M 0 0 L 4 4 L 0 8 Z"/>
        </Grid>
    </ControlTemplate>

    <Style x:Key="{x:Type ScrollBar}" TargetType="{x:Type ScrollBar}">
        <Setter Property="SnapsToDevicePixels" Value="True"/>
        <Setter Property="OverridesDefaultStyle" Value="true"/>
        <Style.Triggers>
            <Trigger Property="Orientation" Value="Horizontal">
                <Setter Property="Width" Value="Auto"/>
                <Setter Property="Height" Value="18" />
                <Setter Property="Template"
Value="{StaticResource HorizontalScrollBar}" />

            </Trigger>
            <Trigger Property="Orientation" Value="Vertical">
                <Setter Property="Width" Value="18"/>
                <Setter Property="Height" Value="Auto" />
                <Setter Property="Template"
Value="{StaticResource VerticalScrollBar}" />
            </Trigger>
        </Style.Triggers>
    </Style>

    <Style x:Key="FavsScrollViewer" TargetType="{x:Type ScrollViewer}">
        <Setter Property="OverridesDefaultStyle" Value="True"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type ScrollViewer}">
                    <Grid>

                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="Auto"/>
                            <ColumnDefinition/>
                        </Grid.ColumnDefinitions>
                        <Grid.RowDefinitions>
                            <RowDefinition/>
                            <RowDefinition Height="Auto"/>
                        </Grid.RowDefinitions>

                        <ScrollContentPresenter Grid.Column="1"/>
                        <ScrollBar Name="PART_VerticalScrollBar"
Value="{TemplateBinding VerticalOffset}"
Maximum="{TemplateBinding ScrollableHeight}"
ViewportSize="{TemplateBinding ViewportHeight}"
Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}"/>
                        <ScrollBar Name="PART_HorizontalScrollBar"
Orientation="Horizontal"
Grid.Row="1"
Grid.Column="1"
Value="{TemplateBinding HorizontalOffset}"
Maximum="{TemplateBinding ScrollableWidth}"
ViewportSize="{TemplateBinding ViewportWidth}"
Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}"/>

                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

</ResourceDictionary>