Windows Phone 7 Slider控件的运用-调色板
通过对红绿蓝三个Slider控件的赋值来综合起来三种颜色调试出来大面板的颜色。
xaml
cs
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using Microsoft.Phone.Controls;
namespace ColorScroll
{
public partial class MainPage : PhoneApplicationPage
{
public MainPage()
{
InitializeComponent();
//三个slider控件的初始值
redSlider.Value = 128;
greenSlider.Value = 128;
blueSlider.Value = 128;
}
//slider控件变化时触发的事件
void OnSliderValueChanged(object sender, RoutedPropertyChangedEventArgs args)
{
Color clr = Color.FromArgb(255, (byte)redSlider.Value,
(byte)greenSlider.Value,
(byte)blueSlider.Value);//获取调剂的颜色
rect.Fill = new SolidColorBrush(clr);//用该颜色的笔刷填充大面板
redText.Text = clr.R.ToString("X2");
greenText.Text = clr.G.ToString("X2");
blueText.Text = clr.B.ToString("X2");
}
//手机方向变化触发的事件，从新布局
protected override void OnOrientationChanged(OrientationChangedEventArgs args)
{
ContentPanel.RowDefinitions.Clear();
ContentPanel.ColumnDefinitions.Clear();
// Landscape
if ((args.Orientation & PageOrientation.Landscape) != 0)
{
ColumnDefinition coldef = new ColumnDefinition();
coldef.Width = new GridLength(1, GridUnitType.Star);
ContentPanel.ColumnDefinitions.Add(coldef);
coldef = new ColumnDefinition();
coldef.Width = new GridLength(1, GridUnitType.Star);
ContentPanel.ColumnDefinitions.Add(coldef);
Grid.SetRow(controlGrid, 0);
Grid.SetColumn(controlGrid, 1);
}
// Portrait
else
{
RowDefinition rowdef = new RowDefinition();
rowdef.Height = new GridLength(1, GridUnitType.Star);
ContentPanel.RowDefinitions.Add(rowdef);
rowdef = new RowDefinition();
rowdef.Height = new GridLength(1, GridUnitType.Star);
ContentPanel.RowDefinitions.Add(rowdef);
Grid.SetRow(controlGrid, 1);
Grid.SetColumn(controlGrid, 0);
}
base.OnOrientationChanged(args);
}
}
}
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