private void GenerateGif(object sender, DoWorkEventArgs e)
{
GifArgument argument = e.Argument as GifArgument;
AnimatedGifEncoder encoder = new AnimatedGifEncoder();
encoder.Start(argument.outputFilePath);
encoder.SetDelay(argument.frameRate);
encoder.SetRepeat(0);
// generate gif
for (int i = 0; i < argument.fileList.Count; i++)
{
if (worker.CancellationPending)
{
e.Cancel = true;
return;
}
encoder.AddFrame(System.Drawing.Image.FromFile(argument.fileList[i]));
if (i == argument.fileList.Count - 1)
{
worker.ReportProgress(100);
}
else
{
worker.ReportProgress((int)(100.0 * i / argument.fileList.Count));
}
}
e.Result = argument.outputFilePath;
}
private void Generate_Button_Click(object sender, RoutedEventArgs e)
{
if (!targetTextBox.Text.EndsWith(".gif"))
{
targetTextBox.Text += ".gif";
}
string outputFilePath = targetTextBox.Text;
// 时间间隔设定
int frameStepTime;
if (!int.TryParse(frameTextBox.Text, out frameStepTime))
{
frameStepTime = 500;
}
frameTextBox.Text = frameStepTime.ToString();
var files = new List <string>();
foreach (var item in fileList.Items)
{
files.Add((string)item);
}
var argument = new GifArgument()
{
outputFilePath = outputFilePath,
frameRate = frameStepTime,
fileList = files
};
worker = new BackgroundWorker()
{
WorkerReportsProgress = true,
WorkerSupportsCancellation = true
};
worker.DoWork += GenerateGif;
worker.RunWorkerCompleted += OnGifCompleted;
worker.ProgressChanged += Worker_ProgressChanged;
worker.RunWorkerAsync(argument);
LockUIElements();
}
