private bool AddTextToGIF(List<string> listText, string pathFileGIF, string pathSaveFile)
{
Image originalImg = Image.FromFile(pathFileGIF);
Image[] frames = getFrames(originalImg); //get array frame of GIF
PropertyItem item = originalImg.GetPropertyItem(0x5100); // FrameDelay in libgdiplus
int delay = (item.Value[0] + item.Value[1] * 256) * 10; // Time is in 1/100ths of a second
//decode GIF
for (int i = 0; i < listText.Count; i++)
{
AnimatedGifEncoder e = new AnimatedGifEncoder();
e.Start(pathSaveFile);
e.SetDelay(delay);
pathSaveFile = pathSaveFile + "\\aaaaa"+i+".gif";
e.SetRepeat(0);
for (int j = 0; j < frames.Length; j++)
{
Image temp = frames[j];
Graphics graphics = Graphics.FromImage(temp);
graphics.DrawString(listText[i], this.Font, Brushes.Red, 0, 0);
e.AddFrame(temp);
}
e.Finish();
}
return true;
}
private void Demo()
{
/* create Gif */
//you should replace filepath
String[] imageFilePaths = new String[] { "c:\\01.png", "c:\\02.png", "c:\\03.png" };
String outputFilePath = "c:\\test.gif";
AnimatedGifEncoder e = new AnimatedGifEncoder();
e.Start(outputFilePath);
e.SetDelay(500);
//-1:no repeat,0:always repeat
e.SetRepeat(0);
for (int i = 0, count = imageFilePaths.Length; i < count; i++)
{
e.AddFrame(Image.FromFile(imageFilePaths[i]));
}
e.Finish();
/* extract Gif */
string outputPath = "c:\\";
GifDecoder gifDecoder = new GifDecoder();
gifDecoder.Read("c:\\test.gif");
for (int i = 0, count = gifDecoder.GetFrameCount(); i < count; i++)
{
Image frame = gifDecoder.GetFrame(i); // frame i
frame.Save(outputPath + Guid.NewGuid().ToString() + ".png", ImageFormat.Png);
}
}