private void Window_Closed(object sender, EventArgs e)
{
//清理预览图组数据
foreach (int iid in imgs.Values)
{
PreviewImg pi = (imgGrid.Children[iid] as ScrollViewer).Content as PreviewImg;
var dicSort = from pireq in pi.Reqs orderby pireq.Value descending select pireq;
foreach (KeyValuePair <int, System.Net.HttpWebRequest> req in dicSort)
{
req.Value.Abort();
}
pi.Reqs.Clear();
}
imgs.Clear();
descs.Clear();
oriIndex.Clear();
imgGrid.Children.Clear();
mainW.previewFrm = null;
(new System.Threading.Thread(
new System.Threading.ThreadStart(delegate()
{
//启动回收
System.Threading.Thread.Sleep(2000);
GC.Collect();
})
)).Start();
}
private void CloseImg()
{
//close
int oriId = selectedId;
int imgc = imgs.Count;
PreviewImg pi = (imgGrid.Children[imgs[oriId]] as ScrollViewer).Content as PreviewImg;
pi.StopLoadImg(oriId, "");
//移除按钮和预览图
btns.Children.Remove(btns.Children[imgs[oriId]]);
imgGrid.Children.Remove(imgGrid.Children[imgs[oriId]]);
if (imgc > 0)
{
index = imgs[oriId];
}
//删除关闭数据
imgs.Remove(oriId);
descs.Remove(oriId);
oriIndex.Remove(oriId);
imgc = imgs.Count;
if (imgc > 0)
{
//更新数组索引值
for (int i = index; i < imgc; i++)
{
int newindex = imgs[(int)((ToggleButton)btns.Children[i]).Content];
imgs[(int)((ToggleButton)btns.Children[i]).Content] = --newindex;
}
//切换预览图
//选择关闭的图前一张
index--;
//没有前一张就选第一张
index = index < 0 ? 0 : index;
//选中按钮
ToggleButton checkedTB = (ToggleButton)btns.Children[index];
checkedTB.IsChecked = true;
//index为0时添加图片不能自增、因此需要在此设1
index = index < 1 ? 1 : index;
GC.Collect();
}
else
{
selectedId = index = 0;
GC.Collect();
Close();
}
}
public ProductImage(PreviewImg image)
{
if (image.ImgReal != null)
{
Real = new ProductImageParameters(image.ImgReal);
}
if (image.ImgSmall != null)
{
Preview = new ProductImageParameters(image.ImgSmall);
}
}
/// <summary>
/// 保存预览图到文件
/// </summary>
/// <param name="silent">静默模式</param>
/// <param name="path">保存路径</param>
/// <returns>预览文件类型</returns>
private string SavePreview(bool silent, string path)
{
try
{
if (!((imgGrid.Children[imgs[selectedId]] as ScrollViewer).Content as PreviewImg).ImgLoaded)
{
ShowMessage("图片尚未加载完毕", MessageBoxButton.OK, MessageBoxImage.Warning);
return("");
}
PreviewImg pimg = (PreviewImg)((ScrollViewer)imgGrid.Children[imgs[selectedId]]).Content;
switch (pimg.ImgType)
{
case "bmp":
case "jpg":
case "png":
Image im = (Image)pimg.prewimg.Children[0];
DataHelpers.ImageToFile((BitmapSource)im.Source, pimg.ImgType, path);
break;
case "gif":
AnimatedGIF gi = (AnimatedGIF)pimg.prewimg.Children[0];
DataHelpers.MemoryStreamToFile((MemoryStream)gi.GIFSource, path);
break;
default:
throw new Exception(pimg.ImgType + "类型不支持保存");
}
if (!silent)
{
ShowMessage("已成功保存至下载文件夹", MessageBoxButton.OK, MessageBoxImage.Information);
}
return(pimg.ImgType);
}
catch (Exception ex)
{
if (!silent)
{
ShowMessage("保存失败\r\n" + ex.Message, MessageBoxButton.OK, MessageBoxImage.Warning);
}
return("");
}
}
private void Window_Closed(object sender, EventArgs e)
{
//清理预览图组数据
foreach (int iid in imgs.Values)
{
PreviewImg pi = (imgGrid.Children[iid] as ScrollViewer).Content as PreviewImg;
var dicSort = from pireq in pi.Reqs orderby pireq.Value descending select pireq;
foreach (KeyValuePair <int, System.Net.HttpWebRequest> req in dicSort)
{
req.Value.Abort();
}
pi.Reqs.Clear();
}
imgs.Clear();
descs.Clear();
oriIndex.Clear();
imgGrid.Children.Clear();
mainW.previewFrm = null;
GC.Collect(2, GCCollectionMode.Optimized);
}
/// <summary>
/// 缩放
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void Button_Click_2(object sender, RoutedEventArgs e)
{
if (!((imgGrid.Children[imgs[selectedId]] as ScrollViewer).Content as PreviewImg).ImgLoaded)
{
ShowMessage("图片尚未加载完毕", MessageBoxButton.OK, MessageBoxImage.Warning);
}
else
{
PreviewImg img = (imgGrid.Children[imgs[selectedId]] as ScrollViewer).Content as PreviewImg;
if (img.isZoom)
{
(imgGrid.Children[imgs[selectedId]] as ScrollViewer).HorizontalScrollBarVisibility = ScrollBarVisibility.Auto;
(imgGrid.Children[imgs[selectedId]] as ScrollViewer).VerticalScrollBarVisibility = ScrollBarVisibility.Auto;
img.ImgZoom(false, false);
}
else
{
(imgGrid.Children[imgs[selectedId]] as ScrollViewer).HorizontalScrollBarVisibility = ScrollBarVisibility.Disabled;
(imgGrid.Children[imgs[selectedId]] as ScrollViewer).VerticalScrollBarVisibility = ScrollBarVisibility.Disabled;
img.ImgZoom(false);
}
}
}
/// <summary>
/// 复制预览图
/// 以QQ剪切板格式创建
/// http://blog.csdn.net/crystal_lz/article/details/51737713
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void MenuItem_Click(object sender, RoutedEventArgs e)
{
try
{
//取当前预览内容、类型、保存路径
PreviewImg pimg = (PreviewImg)((ScrollViewer)imgGrid.Children[imgs[selectedId]]).Content;
bool novprew = false;
string ttype = pimg.ImgType;
string tempfile = GetTempFilePath();
if (!File.Exists(tempfile))
{
if (SavePreview(true, tempfile) == "")
{
return;
}
}
//构建剪贴对象
IDataObject clipobj = new DataObject();
//根据类型分类处理
switch (ttype)
{
case "bmp":
case "jpg":
case "png":
case "gif":
//--- 复制编辑框格式 ---
StringBuilder sb = new StringBuilder();
sb.Append("<QQRichEditFormat><Info version=\"1001\"></Info>");
sb.AppendFormat("<EditElement type=\"1\" filepath=\"{0}\" shortcut=\"\"></EditElement>", tempfile);
sb.Append("<EditElement type=\"0\"><![CDATA[]]></EditElement></QQRichEditFormat>");
byte[] bydate = Encoding.UTF8.GetBytes(sb.ToSafeString());
clipobj.SetData("QQ_Unicode_RichEdit_Format", new MemoryStream(bydate));
clipobj.SetData("QQ_RichEdit_Format", new MemoryStream(bydate));
//--- 复制图像数据 ---
System.Drawing.Image di = System.Drawing.Image.FromStream(pimg.Strs);
clipobj.SetData(DataFormats.Dib, di);
break;
default:
novprew = true;
break;
}
if (novprew)
{
ShowMessage(ttype + "类型不支持复制预览，仅复制了文件", MessageBoxButton.OK, MessageBoxImage.Warning);
}
//--- 复制预览文件 ---
string[] tempfs = new string[] { tempfile };
clipobj.SetData("FileDrop", tempfs);
clipobj.SetData("FileNameW", tempfs);
clipobj.SetData("FileName", tempfs);
//置入剪贴对象到剪贴板
Clipboard.SetDataObject(clipobj, true);
}
catch (Exception ex)
{
ShowMessage("复制预览 " + selectedId + " 失败\r\n" + ex.Message, MessageBoxButton.OK, MessageBoxImage.Warning);
}
}
/// <summary>
/// 添加预览
/// </summary>
/// <param name="img"></param>
/// <param name="parentIndex"></param>
/// <param name="needReferer"></param>
public void AddPreview(Img img, int parentIndex, string needReferer)
{
if (!imgs.ContainsKey(img.Id))
{
imgs.Add(img.Id, index++);
oriIndex.Add(img.Id, parentIndex);
descs.Add(img.Id, img);
//添加预览图分页按钮
ToggleButton btn = new ToggleButton
{
Content = img.Id,
Margin = new Thickness(3, 1, 3, 1)
};
btn.Checked += new RoutedEventHandler(btn_Click);
btns.Children.Add(btn);
//初始化预览图
PreviewImg prei = new PreviewImg(this, img);
prei.MouseLeftButtonUp += new MouseButtonEventHandler(delegate(object s1, MouseButtonEventArgs ea)
{
preMX = 0; preMY = 0;
});
prei.MouseLeftButtonDown += new MouseButtonEventHandler(delegate(object s1, MouseButtonEventArgs ea)
{
preMX = 0; preMY = 0;
});
prei.MouseDown += new MouseButtonEventHandler(delegate(object s1, MouseButtonEventArgs ea)
{
//中键缩放
if (ea.MiddleButton == MouseButtonState.Pressed)
{
Button_Click_2(null, null);
}
});
prei.MouseMove += new MouseEventHandler(delegate(object s1, MouseEventArgs ea)
{
//拖动
if (ea.LeftButton == MouseButtonState.Pressed)
{
if (preMY != 0 && preMX != 0)
{
int offX = (int)(ea.GetPosition(LayoutRoot).X) - preMX;
int offY = (int)(ea.GetPosition(LayoutRoot).Y) - preMY;
ScrollViewer sc = (imgGrid.Children[imgs[selectedId]] as ScrollViewer);
sc.ScrollToHorizontalOffset(sc.HorizontalOffset - offX);
sc.ScrollToVerticalOffset(sc.VerticalOffset - offY);
}
preMX = (int)(ea.GetPosition(LayoutRoot).X);
preMY = (int)(ea.GetPosition(LayoutRoot).Y);
}
});
//加入预览图控件
imgGrid.Children.Add(new ScrollViewer()
{
Content = prei,
Visibility = Visibility.Hidden,
HorizontalScrollBarVisibility = ScrollBarVisibility.Disabled,
VerticalScrollBarVisibility = ScrollBarVisibility.Disabled
});
//开始下载图片
prei.DownloadImg(needReferer);
if (selectedId == 0)
{
(btns.Children[btns.Children.Count - 1] as ToggleButton).IsChecked = true;
}
ChangePreBtnText();
}
}
