我有一个网格,我知道我用鼠标单击的位置的 X 值和 Y 值。
示例:X:235,Y:235 --> 这应该是列:3 和行:3
如何获得 x,y 坐标上的列和行?
我真的需要添加行/列的每个宽度直到达到所需的 x/y 值吗?
我正在使用 WPF(用于我的网格)和 c#(用于 x 和 y 位置)
有人可以帮我吗?
Math.Floor 函数,例如:
Math.Floor(235/scale)
where scale is the the width or height of the grid cell.
定义:返回小于或等于指定数的最大整数。Math.ceil 正好相反。
为此,请考虑...
Transparent
可以)。这是为了命中测试(鼠标点击空白网格区域)工作。GridSplitter
本身就是网格中的一个成员。了解这一点很重要,因为单击网格拆分器还会显示网格拆分器所在的相应单元格索引(列、行)。ColumnSpan
和RowSpan
这里。XAML ...
<Window x:Class="WpfApplication3.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="300" Width="300">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Grid Mouse.PreviewMouseDown="Grid_MouseDown"
Background="Transparent">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<GridSplitter ResizeDirection="Rows"
Width="{Binding ActualWidth,
RelativeSource={RelativeSource
AncestorType=Grid}}"
Height="4" Grid.ColumnSpan="3"
Background="Red" Grid.Row="1" />
<TextBox Height="60" AcceptsReturn="True"
Text="Element1"
ScrollViewer.VerticalScrollBarVisibility="Visible" />
<Button Content="Element2" Grid.Column="1"/>
<TextBlock Text="Element4" Grid.Row="2" Width="100"
Height="40" HorizontalAlignment="Left"
VerticalAlignment="Center"/>
<ComboBox SelectedIndex="0" Height="20"
Grid.Column="1" Grid.Row="2">
<ComboBoxItem Content="Element5"/>
</ComboBox>
<CheckBox Content="Element3" Grid.Column="2"/>
<RadioButton Content="Element6" Grid.Row="2"
Grid.Column="2" VerticalAlignment="Center"
HorizontalAlignment="Center"/>
</Grid>
<StackPanel Orientation="Horizontal" Grid.Row="1">
<TextBlock Text="Selected Column and Row is ... " Margin="5"/>
<TextBlock x:Name="StatusTextBlock" FontSize="12"
FontWeight="SemiBold" Margin="5"/>
</StackPanel>
</Grid>
</Window>
代码背后..
private void Grid_MouseDown(object sender, MouseButtonEventArgs e)
{
int selectedColumnIndex = -1, selectedRowIndex = -1;
var grid = sender as Grid;
if (grid != null)
{
var pos = e.GetPosition(grid);
var temp = pos.X;
for (var i = 0; i < grid.ColumnDefinitions.Count; i++ )
{
var colDef = grid.ColumnDefinitions[i];
temp -= colDef.ActualWidth;
if (temp <= -1)
{
selectedColumnIndex = i;
break;
}
}
temp = pos.Y;
for (var i = 0; i < grid.RowDefinitions.Count; i++)
{
var rowDef = grid.RowDefinitions[i];
temp -= rowDef.ActualHeight;
if (temp <= -1)
{
selectedRowIndex = i;
break;
}
}
}
StatusTextBlock.Text = selectedColumnIndex + ", " + selectedRowIndex;
}