在带有 WPF 的 C# 中，如何绘制Image? 我尝试过在线搜索，但我似乎找到的所有教程都涉及绘制形状或设置背景Image。
我有兴趣尝试创建一个国际象棋程序。我将棋盘设置为背景Image，但不知道如何为棋子绘制图像。
问问题
4092 次
3 回答
7
好的，这是我对棋盘的看法：
<Window x:Class="MiscSamples.ChessBoard"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:MiscSamples"
Title="ChessBoard" Height="300" Width="300">
<Window.Resources>
<DataTemplate DataType="{x:Type local:ChessPiece}">
<Image Source="{Binding ImageSource}"/>
</DataTemplate>
</Window.Resources>
<Grid>
<UniformGrid Rows="8" Columns="8" Opacity=".5">
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
<Rectangle Fill="Black"/>
<Rectangle Fill="White"/>
</UniformGrid>
<ItemsControl ItemsSource="{Binding}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<Grid IsItemsHost="True">
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
</Grid>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemContainerStyle>
<Style TargetType="ContentPresenter">
<Setter Property="Grid.Row" Value="{Binding Row}"/>
<Setter Property="Grid.Column" Value="{Binding Column}"/>
</Style>
</ItemsControl.ItemContainerStyle>
</ItemsControl>
</Grid>
</Window>
代码背后：
using System.Linq;
using System.Windows;
using System.ComponentModel;
using System.Collections.ObjectModel;
namespace MiscSamples
{
public partial class ChessBoard : Window
{
public ObservableCollection<ChessPiece> Pieces { get; set; }
public ChessBoard()
{
Pieces = new ObservableCollection<ChessPiece>();
InitializeComponent();
DataContext = Pieces;
NewGame();
}
private void NewGame()
{
Pieces.Clear();
Pieces.Add(new ChessPiece() { Row = 0, Column = 0, Type = ChessPieceTypes.Tower, IsBlack = true});
Pieces.Add(new ChessPiece() { Row = 0, Column = 1, Type = ChessPieceTypes.Knight, IsBlack = true });
Pieces.Add(new ChessPiece() { Row = 0, Column = 2, Type = ChessPieceTypes.Bishop, IsBlack = true });
Pieces.Add(new ChessPiece() { Row = 0, Column = 3, Type = ChessPieceTypes.Queen, IsBlack = true });
Pieces.Add(new ChessPiece() { Row = 0, Column = 4, Type = ChessPieceTypes.King, IsBlack = true });
Pieces.Add(new ChessPiece() { Row = 0, Column = 5, Type = ChessPieceTypes.Bishop, IsBlack = true });
Pieces.Add(new ChessPiece() { Row = 0, Column = 6, Type = ChessPieceTypes.Knight, IsBlack = true });
Pieces.Add(new ChessPiece() { Row = 0, Column = 7, Type = ChessPieceTypes.Tower, IsBlack = true });
Enumerable.Range(0, 8).Select(x => new ChessPiece()
{
Row = 1,
Column = x,
IsBlack = true,
Type = ChessPieceTypes.Pawn
}).ToList().ForEach(Pieces.Add);
Pieces.Add(new ChessPiece() { Row = 7, Column = 0, Type = ChessPieceTypes.Tower, IsBlack = false });
Pieces.Add(new ChessPiece() { Row = 7, Column = 1, Type = ChessPieceTypes.Knight, IsBlack = false });
Pieces.Add(new ChessPiece() { Row = 7, Column = 2, Type = ChessPieceTypes.Bishop, IsBlack = false });
Pieces.Add(new ChessPiece() { Row = 7, Column = 3, Type = ChessPieceTypes.Queen, IsBlack = false });
Pieces.Add(new ChessPiece() { Row = 7, Column = 4, Type = ChessPieceTypes.King, IsBlack = false });
Pieces.Add(new ChessPiece() { Row = 7, Column = 5, Type = ChessPieceTypes.Bishop, IsBlack = false });
Pieces.Add(new ChessPiece() { Row = 7, Column = 6, Type = ChessPieceTypes.Knight, IsBlack = false });
Pieces.Add(new ChessPiece() { Row = 7, Column = 7, Type = ChessPieceTypes.Tower, IsBlack = false });
Enumerable.Range(0, 8).Select(x => new ChessPiece()
{
Row = 6,
Column = x,
IsBlack = false,
Type = ChessPieceTypes.Pawn
}).ToList().ForEach(Pieces.Add);
}
}
视图模型：
public class ChessPiece: INotifyPropertyChanged
{
public bool IsBlack { get; set; }
public ChessPieceTypes Type { get; set; }
private int _row;
public int Row
{
get { return _row; }
set
{
_row = value;
OnPropertyChanged("Row");
}
}
private int _column;
public int Column
{
get { return _column; }
set
{
_column = value;
OnPropertyChanged("Column");
}
}
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void OnPropertyChanged(string propertyName)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
}
public string ImageSource
{
get { return "../ChessPieces/" + (IsBlack ? "Black" : "White") + Type.ToString() + ".png"; }
}
}
public enum ChessPieceTypes
{
Pawn,
Tower,
Knight,
Bishop,
Queen,
King,
}
}
这是它在我的电脑中的样子：
请注意，我使用纯 XAML 来创建 UI。我绝不会在代码中创建或操作 UI 元素。WPF 不需要，也不推荐。
您可以将我的代码复制并粘贴到 a 中File -> New Project -> WPF Application，然后自己查看结果。您将需要以下项目结构：
另请注意，图像文件需要设置为Build Action: Resource.
请记住：这是 WPF 的EVERYTHING. 您很少需要在 WPF 中的代码中操作 UI 元素，或者执行诸如绘图之类的事情。
于 2013-03-20T01:54:11.067 回答
0
这取决于你想怎么画我通常使用位图，这就是我这样做的方式。
//Initialize image and stuff
int Width = 100;
int Height = 100;
int nStride = (Width * PixelFormats.Bgra32.BitsPerPixel + 7) / 8;
Int32Rect ImageDimentions = new Int32Rect(0, 0, Width, Height);
int[] ImageArr = new ImageArr[Height * nStride];
//Manually paint your image
for (int Y = 0; Y < Height; Y++)
{
for (int X = 0; X < Width; X++)
{
//X and Y means pixel(X,Y) in cartesian plane 1 quadrant mirrored around X axis
//Down is the Y from 0 to height, and right to left is X from 0 to width
int index = (Y * Width + X) * 4;
ImageArr[index + 0] = (byte)0; //Blue
ImageArr[index + 1] = (byte)0; //Green
ImageArr[index + 2] = (byte)0; //Red
ImageArr[index + 3] = (byte)255; //Alpha
}
}
//Push your data to a Bitmap
WriteableBitmap BmpToWriteOn = new WriteableBitmap(Width, Height, 96, 96, PixelFormats.Bgra32, null);
BmpToWriteOn.WritePixels(ImageDimentions, ImageArr, nStride, 0, 0);
//Push your bitmap to Xaml Image
YourXamlImage.Source = BmpToWriteOn;
于 2013-03-20T02:22:55.113 回答
0
对于位图，您可以使用BitmapImage：
http://msdn.microsoft.com/en-us/library/system.windows.media.imaging.bitmapimage.aspx
于 2013-03-20T00:57:59.223 回答