capture

PacticeSolution/Capture/App.xaml

@@ -0,0 +1,9 @@
+<Application x:Class="Capture.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:Capture"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+         
+    </Application.Resources>
+</Application>

PacticeSolution/Capture/App.xaml.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.Data;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace Capture
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+}

PacticeSolution/Capture/AssemblyInfo.cs

@@ -0,0 +1,10 @@
+using System.Windows;
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+                                     //(used if a resource is not found in the page,
+                                     // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+                                              //(used if a resource is not found in the page,
+                                              // app, or any theme specific resource dictionaries)
+)]

PacticeSolution/Capture/Capture.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net6.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="System.Drawing.Common" Version="7.0.0" />
+  </ItemGroup>
+
+</Project>

PacticeSolution/Capture/MainWindow.xaml

@@ -0,0 +1,25 @@
+<Window x:Class="Capture.MainWindow"
+        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"
+        xmlns:local="clr-namespace:Capture"
+        mc:Ignorable="d"
+        Title="MainWindow" Height="450" Width="800" AllowsTransparency="True" WindowStyle="None" ResizeMode="CanResizeWithGrip"
+        MouseDown="Window_MouseDown">
+    <Window.Background>
+        <SolidColorBrush Color="White" Opacity="0.002"/>
+    </Window.Background>
+    <Window.DataContext>
+        <local:OptionContext/>
+    </Window.DataContext>
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="*"/>
+            <RowDefinition Height="{Binding ButtonHeight}"/>
+        </Grid.RowDefinitions>
+        <Border BorderThickness="{Binding FrameThickness}" BorderBrush="{Binding FrameColor}"/>
+
+        <Button x:Name="btnCapture" Grid.Row="1" Content="Capture" Click="btnCapture_Click"/>
+    </Grid>
+</Window>

PacticeSolution/Capture/MainWindow.xaml.cs

@@ -0,0 +1,84 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+using System.Drawing;
+using System.Drawing.Imaging;
+using System.Diagnostics;
+using System.Security.Cryptography;
+
+namespace Capture
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+        private OptionContext _options;
+
+        public MainWindow()
+        {
+            InitializeComponent();
+            InitInstance();
+        }
+
+        private void InitInstance()
+        {
+            _options = this.DataContext as OptionContext;
+        }
+
+        private void CaptureScreen()
+        {
+            int width = (int)this.Width - _options.FrameThickness * 2;
+            int height = (int)this.Height - _options.FrameThickness * 2 - _options.ButtonHeight;
+            int left = (int)this.Left + _options.FrameThickness;
+            int top = (int)this.Top + _options.FrameThickness;
+
+            string path = @"C:\Temp\test.bmp";
+            using (Bitmap bitmap = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format32bppArgb))
+            {
+                using (Graphics gr = Graphics.FromImage(bitmap))
+                {
+                    gr.CopyFromScreen(left, top, 0, 0, bitmap.Size);
+                }
+
+                bitmap.Save(path, ImageFormat.Png);
+            }
+
+            OpenFile(path);
+        }
+
+        private void OpenFile(string path)
+        {
+            Process pr = new Process();
+            pr.StartInfo = new ProcessStartInfo(path)
+            {
+                UseShellExecute = true
+            };
+            pr.Start();
+        }
+
+        private void btnCapture_Click(object sender, RoutedEventArgs e)
+        {
+            CaptureScreen();
+        }
+
+        private void Window_MouseDown(object sender, MouseButtonEventArgs e)
+        {
+            if (e.ChangedButton != MouseButton.Left)
+                return;
+
+            this.DragMove();
+        }
+    }
+}

PacticeSolution/Capture/OptionContext.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Media;
+
+namespace Capture
+{
+    public class OptionContext
+    {
+        public int ButtonHeight { get; set; } = 20;
+        public Brush FrameColor { get; set; } = Brushes.Red;
+        public int FrameThickness { get; set; } = 2;
+    }
+}

PacticeSolution/PacticeSolution.sln

@@ -139,6 +139,10 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ChartSample", "ChartSample\
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "LiveChartPractice", "LiveChartPractice\LiveChartPractice.csproj", "{4B945CF3-2E74-46AA-8EFC-21B6434A4AC2}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WPFCanvas", "WPFCanvas\WPFCanvas.csproj", "{D407D4BF-1BE7-4C02-B2A8-CF15A92793CF}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Capture", "Capture\Capture.csproj", "{08694854-976A-4551-A4CA-7BA80CFCC33C}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -417,6 +421,14 @@ Global
 		{4B945CF3-2E74-46AA-8EFC-21B6434A4AC2}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{4B945CF3-2E74-46AA-8EFC-21B6434A4AC2}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{4B945CF3-2E74-46AA-8EFC-21B6434A4AC2}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D407D4BF-1BE7-4C02-B2A8-CF15A92793CF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D407D4BF-1BE7-4C02-B2A8-CF15A92793CF}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D407D4BF-1BE7-4C02-B2A8-CF15A92793CF}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D407D4BF-1BE7-4C02-B2A8-CF15A92793CF}.Release|Any CPU.Build.0 = Release|Any CPU
+		{08694854-976A-4551-A4CA-7BA80CFCC33C}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{08694854-976A-4551-A4CA-7BA80CFCC33C}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{08694854-976A-4551-A4CA-7BA80CFCC33C}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{08694854-976A-4551-A4CA-7BA80CFCC33C}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

PacticeSolution/WPFCanvas/App.xaml

@@ -0,0 +1,9 @@
+<Application x:Class="WPFCanvas.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:WPFCanvas"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+         
+    </Application.Resources>
+</Application>

PacticeSolution/WPFCanvas/App.xaml.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.Data;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace WPFCanvas
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+}

PacticeSolution/WPFCanvas/AssemblyInfo.cs

@@ -0,0 +1,10 @@
+using System.Windows;
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+                                     //(used if a resource is not found in the page,
+                                     // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+                                              //(used if a resource is not found in the page,
+                                              // app, or any theme specific resource dictionaries)
+)]

PacticeSolution/WPFCanvas/MainWindow.xaml

@@ -0,0 +1,64 @@
+<Window x:Class="WPFCanvas.MainWindow"
+        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"
+        xmlns:local="clr-namespace:WPFCanvas"
+        mc:Ignorable="d"
+        Title="Paint" Height="450" Width="800"
+        MouseMove="Window_MouseMove"
+        MouseLeftButtonDown="Window_MouseLeftButtonDown"
+        MouseLeftButtonUp="Window_MouseLeftButtonUp">
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="50"/>
+            <RowDefinition Height="*"/>
+        </Grid.RowDefinitions>
+
+        <Grid Grid.Row="0">
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition Width="*"/>
+                <ColumnDefinition Width="*"/>
+                <ColumnDefinition Width="*"/>
+                <ColumnDefinition Width="*"/>
+                <ColumnDefinition Width="*"/>
+                <ColumnDefinition Width="3*"/>
+                <ColumnDefinition Width="*"/>
+                <ColumnDefinition Width="*"/>
+                <ColumnDefinition Width="*"/>
+                <ColumnDefinition Width="*"/>
+                <ColumnDefinition Width="*"/>
+            </Grid.ColumnDefinitions>
+
+            <Button x:Name="btnLine" Grid.Column="0" Margin="5" Content="Line" Click="btnLine_Click"/>
+            <Button x:Name="btnSquare" Grid.Column="1" Margin="5" Content="Square" Click="btnSquare_Click"/>
+
+            <ComboBox x:Name="cboThickness" Grid.Column="4" SelectedValuePath="Content" HorizontalContentAlignment="Center" VerticalContentAlignment="Center" SelectedIndex="0" SelectionChanged="cboThickness_SelectionChanged">
+                <ComboBoxItem Content="1"/>
+                <ComboBoxItem Content="2"/>
+                <ComboBoxItem Content="5"/>
+                <ComboBoxItem Content="10"/>
+                <ComboBoxItem Content="20"/>
+            </ComboBox>
+            <Grid Grid.Column="5">
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition/>
+                    <ColumnDefinition/>
+                    <ColumnDefinition/>
+                    <ColumnDefinition/>
+                    <ColumnDefinition/>
+                </Grid.ColumnDefinitions>
+
+                <Button x:Name="btnBlack" Grid.Column="0" Background="Black" Margin="10 15 10 15" Click="btnBlack_Click"/>
+                <Button x:Name="btnRed" Grid.Column="1" Background="Red" Margin="10 15 10 15" Click="btnRed_Click"/>
+                <Button x:Name="btnBlue" Grid.Column="2" Background="Blue" Margin="10 15 10 15" Click="btnBlue_Click"/>
+                <Button x:Name="btnGreen" Grid.Column="3" Background="Green" Margin="10 15 10 15" Click="btnGreen_Click"/>
+                <Button x:Name="btnYellow" Grid.Column="4" Background="Yellow" Margin="10 15 10 15" Click="btnYellow_Click"/>
+            </Grid>
+        </Grid>
+
+        <Border Grid.Row="1" BorderBrush="Salmon" BorderThickness="2" CornerRadius="10" Margin="10">
+            <Canvas x:Name="canvas"/>
+        </Border>
+    </Grid>
+</Window>

PacticeSolution/WPFCanvas/MainWindow.xaml.cs

@@ -0,0 +1,161 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using System.Windows.Shapes;
+
+namespace WPFCanvas
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+        private enum DrawMode
+        {
+            Line,
+            Circle,
+            Square,
+            Eraser,
+        };
+
+        private bool _mouseClicked;
+        private Point _prePosition;
+
+        private Brush _myBrush;
+        private double _thickness;
+
+        private Rectangle _tmpRect;
+
+        private DrawMode MODE;
+
+        public MainWindow()
+        {
+            InitializeComponent();
+        }
+
+        private void btnLine_Click(object sender, RoutedEventArgs e)
+        {
+            MODE = DrawMode.Line;
+        }
+
+        private void Window_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
+        {
+            _mouseClicked = true;
+            _prePosition = e.GetPosition(canvas);
+        }
+
+        private void Window_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
+        {
+            _mouseClicked = false;
+        }
+
+        private void Window_MouseMove(object sender, MouseEventArgs e)
+        {
+            Point nowPosition = e.GetPosition(canvas);
+            if (!_mouseClicked)
+                return;
+
+            switch (MODE)
+            {
+                case DrawMode.Line:
+                    Line line = new Line()
+                    {
+                        X1 = _prePosition.X,
+                        Y1 = _prePosition.Y,
+                        X2 = nowPosition.X,
+                        Y2 = nowPosition.Y,
+                        Stroke = _myBrush == null ? Brushes.Black : _myBrush,
+                        StrokeThickness = _thickness <= 0 ? 1 : _thickness
+                    };
+                    canvas.Children.Add(line);
+
+                    _prePosition = nowPosition;
+                    break;
+                case DrawMode.Square:
+                    if (e.MouseDevice.LeftButton != MouseButtonState.Pressed)
+                        _tmpRect = null;
+                    else
+                    {
+                        Rectangle rect = new Rectangle();
+                        rect.Stroke = Brushes.Gray;
+                        rect.Fill = _myBrush == null ? Brushes.Black : _myBrush;
+                        rect.Opacity = 0.8;
+
+                        double left = _prePosition.X;
+                        double top = _prePosition.Y;
+
+                        double width = nowPosition.X - _prePosition.X;
+                        double height = nowPosition.Y - _prePosition.Y;
+
+                        if (nowPosition.X < _prePosition.X)
+                        {
+                            left = nowPosition.X;
+                            width *= -1;
+                        }
+
+                        if (nowPosition.Y < _prePosition.Y)
+                        {
+                            top = nowPosition.Y;
+                            height *= -1;
+                        }
+
+                        rect.Margin = new Thickness(left, top, 0, 0);
+                        rect.Width = width;
+                        rect.Height = height;
+
+                        canvas.Children.Remove(_tmpRect);
+                        _tmpRect = rect;
+                        canvas.Children.Add(rect);
+                    }
+                    break;
+            }
+
+            
+        }
+
+        private void btnBlack_Click(object sender, RoutedEventArgs e)
+        {
+            _myBrush = Brushes.Black;
+        }
+
+        private void btnRed_Click(object sender, RoutedEventArgs e)
+        {
+            _myBrush = Brushes.Red;
+        }
+
+        private void btnBlue_Click(object sender, RoutedEventArgs e)
+        {
+            _myBrush = Brushes.Blue;
+        }
+
+        private void btnGreen_Click(object sender, RoutedEventArgs e)
+        {
+            _myBrush = Brushes.Green;
+        }
+
+        private void btnYellow_Click(object sender, RoutedEventArgs e)
+        {
+            _myBrush = Brushes.Yellow;
+        }
+
+        private void cboThickness_SelectionChanged(object sender, SelectionChangedEventArgs e)
+        {
+            _thickness = double.Parse(cboThickness.SelectedValue.ToString());
+        }
+
+        private void btnSquare_Click(object sender, RoutedEventArgs e)
+        {
+            MODE = DrawMode.Square;
+        }
+    }
+}

PacticeSolution/WPFCanvas/WPFCanvas.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net6.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
+
+</Project>