/// <summary>
/// 按原图比例展示图像
/// </summary>
//--------------------------------------------------------------------------
//修改历史:
//日期 修改人 修改
//2010-8-27 zhanggang 创建代码
//--------------------------------------------------------------------------
public void OriginalView()
{
BitmapSource img = (BitmapSource)(ViewedPhoto.Source);
ViewedPhoto.Width = curCoef * img.Width;
ViewedPhoto.Height = curCoef * img.Height;
ViewScroll.UpdateLayout();
}
/// <summary>
/// 顺时针旋转图片
/// <param name="sender">调用对象</param>
/// <param name="e">参数信息</param>
/// </summary>
//--------------------------------------------------------------------------
//修改历史:
//日期 修改人 修改
//2010-8-3 zhanggang 创建代码
//--------------------------------------------------------------------------
private void Rotate_Click(object sender, RoutedEventArgs e)
{
logger.Debug("旋转图片处理开始。");
//1：判断命令来源
Button button = e.Source as Button;
string cmd = button.Content.ToString();
//2:根据按钮进行放大系数修改
switch (cmd)
{
case "旋转(顺)":
rotateDegree += 90;
break;
case "旋转(逆)":
rotateDegree -= 90;
break;
default:
break;
}
//3:旋转图像
using (FileStream mse = new FileStream(SelectedImageName, FileMode.Open, FileAccess.Read))
{
BitmapImage bitImage = new BitmapImage();
bitImage.BeginInit();
bitImage.StreamSource = mse;
bitImage.CacheOption = BitmapCacheOption.OnLoad;
bitImage.Rotation = InnerUtility.GetRotation(rotateDegree);
bitImage.EndInit();
bitImage.Freeze();
ViewedPhoto.Source = bitImage;
ViewedPhoto.Width = bitImage.Width * curCoef;
ViewedPhoto.Height = bitImage.Height * curCoef;
ViewScroll.UpdateLayout();
}
logger.Debug("旋转图片处理结束。");
}
/// <summary>
///
/// <param name="sender">调用对象</param>
/// <param name="e">参数信息</param>
/// </summary>
//--------------------------------------------------------------------------
//修改历史:
//日期 修改人 修改
//2010-8-5 zhanggang 创建代码
//--------------------------------------------------------------------------
private void Zoom_Click(object sender, RoutedEventArgs e)
{
logger.Debug("更新图像大小处理开始。");
orginalViewButtonPressed = false;
//1：判断命令来源
Button button = e.Source as Button;
string cmd = button.Content.ToString();
//2:根据按钮进行放大系数修改
switch (cmd)
{
case "放大":
curCoef *= 1.5;
SingleImageSizeChanged();
break;
case "缩小":
curCoef *= (double)2.0 / 3;
SingleImageSizeChanged();
break;
case "原图":
curCoef = 1.0;
orginalViewButtonPressed = true;
OriginalView();
break;
default:
break;
}
ViewScroll.UpdateLayout();
SetScrollViewerVisible(ViewScroll, ScrollBarVisibility.Auto);
logger.Debug("更新图像大小处理结束。");
}