object IExtractIcon.ExtractIcon(ExtractIconType type, Size desiredSize)
{
if (type == ExtractIconType.Thumbnail)
{
//// Have we already extracted the image?
//if (cachedImage != null)
// return cachedImage;
// Do we support this extension?
string ext = base.File.Extension.ToLowerInvariant();
if (ext == ".mif")
{
#if false
using (Stream stream = base.File.OpenRead())
using (QQGame.MifImageDecoder mif = new QQGame.MifImageDecoder(stream))
{
// TODO: should we dispose the original image???
Image img = mif.DecodeFrame().Image;
return (Image)img.Clone();
}
#else
Stream stream = base.File.OpenRead();
QQGame.MifImage mif = new QQGame.MifImage(stream);
mif.Name = base.File.Name;
return mif;
#endif
}
else if (ext == ".bmp" || ext == ".png")
{
using (Stream stream = base.File.OpenRead())
using (Bitmap bmp = new Bitmap(stream))
{
// Make a copy of the bitmap, because MSDN says "You must
// keep the stream open for the lifetime of the Bitmap."
return bmp.Clone();
}
}
}
return null;
}
private void btnExport_Click(object sender, EventArgs e)
{
NewSaveImage();
return;
#if false
IVirtualItem vItem = vFolderListView.ActiveItem;
if (vItem == null || !(vItem is IExtractIcon) || !(vItem is IVirtualFile))
{
MessageBox.Show("No entry selected.");
return;
}
IExtractIcon vIcon = vItem as IExtractIcon;
object icon = vIcon.ExtractIcon(ExtractIconType.Thumbnail, Size.Empty);
MultiFrameImage image;
if (icon is MultiFrameImage)
image = icon as MultiFrameImage;
else if (icon is Image)
image = new GdiImage(icon as Image);
else
{
using (icon as IDisposable) { }
return;
}
//ResourceListViewEntry ent = viewList.ActiveEntry;
string ext = Path.GetExtension(vItem.Name).ToLowerInvariant();
string filter = "原始格式|*" + ext;
// If the selected item is a multi-frame image, export as SVG.
if (image.FrameCount > 1)
{
filter += "|SVG 动画|*.svg";
}
// If the selected item is an image, display additional format
// conversion options in the save dialog.
if (true)
{
filter += "|PNG 图片|*.png";
filter += "|BMP 图片|*.bmp";
filter += "|JPEG 图片|*.jpg";
filter += "|TIFF 图片|*.tif";
}
saveFileDialog1.Filter = filter;
saveFileDialog1.FilterIndex = 1;
if (image.FrameCount > 1)
{
saveFileDialog1.FilterIndex = 2;
}
saveFileDialog1.FileName = Path.GetFileNameWithoutExtension(
vItem.Name);
// Show the dialog.
if (saveFileDialog1.ShowDialog(this) != DialogResult.OK)
return;
string filename = saveFileDialog1.FileName;
// If the filter index is 1 (save as is), just copy the stream.
if (saveFileDialog1.FilterIndex == 1)
{
using (Stream input = (vItem as IVirtualFile).Open())
using (Stream output = new FileStream(filename, FileMode.Create, FileAccess.Write))
{
//This is .NET 2.0.
//byte[] buffer = new byte[65536];
//int n;
//while ((n = input.Read(buffer, 0, buffer.Length)) > 0)
// output.Write(buffer, 0, n);
try
{
input.CopyTo(output);
}
catch (Exception ex)
{
MessageBox.Show(this, "导出素材时遇到以下错误:\r\n" +
ex.Message + "\r\n保存的文件可能不完整。",
this.Text, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
txtStatus.Text = "保存成功";
image.Dispose();
return;
}
// Get the requested image format.
int filterIndex = saveFileDialog1.FilterIndex;
if (image.FrameCount > 1)
filterIndex--;
ImageFormat desiredFormat =
(filterIndex == 2) ? ImageFormat.Png :
(filterIndex == 3) ? ImageFormat.Bmp :
(filterIndex == 4) ? ImageFormat.Jpeg :
(filterIndex == 5) ? ImageFormat.Tiff : ImageFormat.Emf;
// If this is a single-frame image, convert and save it.
if (image.FrameCount <= 1)
{
image.Frame.Save(filename, desiredFormat);
txtStatus.Text = "保存成功";
image.Dispose();
return;
}
// If this is a multi-frame image and user chooses to save as
// SVG, do that.
if (filterIndex == 1)
{
// TODO: fix this
using (Stream input = (vItem as IVirtualFile).Open())
using (ImageDecoder decoder = new QQGame.MifImageDecoder(input))
using (Stream output = new FileStream(filename, FileMode.Create, FileAccess.Write))
using (ImageEncoder encoder = new SvgImageEncoder(output, decoder.FrameCount))
{
for (int i = 0; i < decoder.FrameCount; i++)
{
Util.Media.ImageFrame frame = decoder.DecodeFrame();
using (frame.Image)
{
encoder.EncodeFrame(frame);
}
}
}
txtStatus.Text = "保存成功";
image.Dispose();
return;
}
// Now for a multi-frame image, ask the user how they want to save it.
DialogResult result = MessageBox.Show(this,
"选中的图片包含 " + image.FrameCount + " 帧。" +
"是否将每一帧单独存为一个文件？\r\n" +
"如果选择是，则各帧将分别保存为\r\n " +
GetNumberedFileName(Path.GetFileName(filename),
1, image.FrameCount) + "\r\n" +
" ......\r\n " +
GetNumberedFileName(Path.GetFileName(filename),
image.FrameCount, image.FrameCount) + "\r\n" +
"如果选择否，则只保存第一帧到 " + Path.GetFileName(filename) +
"。", this.Text, MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question);
// Do nothing if the user is confused and canceled the action.
if (result == DialogResult.Cancel)
{
image.Dispose();
return;
}
// If the user clicked "No", then we only save the first frame,
// which is just the thumbnail.
if (result == DialogResult.No)
{
image.Frame.Save(filename, desiredFormat);
txtStatus.Text = "保存成功";
image.Dispose();
return;
}
// Now the user clicked "Yes", so we need to save each frame
// in an individual file.
for (int i = 0; i < image.FrameCount; i++)
{
image.FrameIndex = i;
FileInfo file = new FileInfo(
GetNumberedFileName(filename, i + 1, image.FrameCount));
if (file.Exists)
{
if (MessageBox.Show(this, "文件 " + file.FullName +
" 已经存在。是否要覆盖？", "保存素材",
MessageBoxButtons.YesNoCancel,
MessageBoxIcon.Exclamation) != DialogResult.Yes)
{
image.Dispose();
return;
}
}
image.Frame.Save(file.FullName);
}
txtStatus.Text = "保存成功";
image.Dispose();
#endif
}
/// <summary>
/// Entry routine of the worker thread.
/// </summary>
private static void worker_DoWork(object sender, DoWorkEventArgs e)
{
Stack<ThumbnailTask> tasks = (e.Argument as Stack<ThumbnailTask>);
while (true)
{
// Retrieve the next undone task in the task queue, starting
// from the end because those are newer tasks.
ThumbnailTask task = null;
lock (tasks)
{
while (tasks.Count > 0)
{
task = tasks.Peek();
if (task.Tag.Thumbnail == null)
break;
tasks.Pop();
}
if (tasks.Count == 0) // no more tasks
return;
}
// Perform this task.
ResourceListViewEntry tag = task.Tag;
#if DEBUG && false
System.Diagnostics.Debug.WriteLine("Starting task for item " + task.ItemIndex);
#endif
// Load the resource if its format is supported.
if (tag.ResourceEntry is IVirtualFile)
{
IVirtualFile vFile = tag.ResourceEntry as IVirtualFile;
string name = tag.ResourceEntry.Name.ToLowerInvariant();
try
{
if (name.EndsWith(".mif"))
{
using (Stream stream = vFile.Open(FileMode.Open, FileAccess.Read, FileShare.Read))
using (ImageDecoder mif = new QQGame.MifImageDecoder(stream))
{
tag.Thumbnail = mif.DecodeFrame().Image;
tag.FrameCount = mif.FrameCount;
}
}
else if (name.EndsWith(".bmp"))
{
using (Stream stream = vFile.Open(FileMode.Open, FileAccess.Read, FileShare.Read))
{
tag.Thumbnail = new Bitmap(stream);
tag.FrameCount = 1;
}
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(
"Error loading " + name + ": " + ex.Message);
}
}
// If a thumbnail image cannot be loaded, we use a default one.
if (tag.Thumbnail == null)
{
tag.Thumbnail = DefaultIcon;
tag.FrameCount = 1;
}
// Report progress.
(sender as BackgroundWorker).ReportProgress(0, task);
}
}
