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初始化

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xhm
2023-11-21 23:05:03 +08:00
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CPF.Windows/GDIPlus/GDIPlusImage.cs Normal file
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#if Net4
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Text;
using CPF.Drawing;
using ImageFormat = CPF.Drawing.ImageFormat;
namespace CPF.GDIPlus
{
public class GDIPlusImage : IImageImpl
{
public GDIPlusImage(System.Drawing.Image image)
{
this.image = image;
if (image.RawFormat.Guid == System.Drawing.Imaging.ImageFormat.Gif.Guid)
{
//var dimension = new System.Drawing.Imaging.FrameDimension(image.FrameDimensionsList[0]);
frameCount = (uint)image.GetFrameCount(FrameDimension.Time);
PropertyItem frameDelayItem = image.GetPropertyItem(PropertyTagFrameDelay);
if (frameDelayItem != null)
{
byte[] values = frameDelayItem.Value;
//Debug.Assert(values.Length == 4 * FrameCount, "PropertyItem has invalid value byte array");
frameDelay = new int[FrameCount];
for (int i = 0; i < FrameCount; ++i)
{
frameDelay[i] = (values[i * 4] + 256 * values[i * 4 + 1] + 256 * 256 * values[i * 4 + 2] + 256 * 256 * 256 * values[i * 4 + 3]) * 10;
duration += frameDelay[i];
}
}
////Store each frame
//imgList = new System.Drawing.Image[frameCount];
//for (int i = 0; i < frameCount; i++)
//{
// image.SelectActiveFrame(System.Drawing.Imaging.FrameDimension.Time, i);//This action requires the stream opened.
// imgList[i] = (System.Drawing.Image)image.Clone();
//}
}
}
internal GDIPlusImage() { }
//System.Drawing.Image[] imgList;
System.Drawing.Image image;
public System.Drawing.Image Image
{
get
{
//if (imgList != null)
//{
// return imgList[index];
//}
return image;
}
protected set { image = value; }
}
public int Width
{
get { return image.Width; }
}
public int Height
{
get { return image.Height; }
}
uint frameCount = 1;
public uint FrameCount
{
get
{
//if (frameCount == 0)
//{
// if (image.RawFormat.Guid == System.Drawing.Imaging.ImageFormat.Gif.Guid)
// {
// FrameDimension fd = new FrameDimension(image.FrameDimensionsList[0]);
// frameCount = (uint)image.GetFrameCount(fd);
// }
// else
// {
// frameCount = 1;
// }
//}
return frameCount;
}
}
uint index;
public uint Index
{
get { return index; }
set
{
index = value;
image.SelectActiveFrame(FrameDimension.Time, (int)value);
}
}
const int PropertyTagFrameDelay = 0x5100;
int[] frameDelay;
public int[] FrameDelay
{
get
{
//var d = Duration;
return frameDelay;
}
}
int duration = 0;
public int Duration
{
get
{
//if (duration < 0)
//{
// duration = 0;
// if (FrameCount > 1)
// {
// PropertyItem frameDelayItem = image.GetPropertyItem(PropertyTagFrameDelay);
// // If the image does not have a frame delay, we just return 0.
// //
// if (frameDelayItem != null)
// {
// // Convert the frame delay from byte[] to int
// //
// byte[] values = frameDelayItem.Value;
// //Debug.Assert(values.Length == 4 * FrameCount, "PropertyItem has invalid value byte array");
// frameDelay = new int[FrameCount];
// for (int i = 0; i < FrameCount; ++i)
// {
// frameDelay[i] = (values[i * 4] + 256 * values[i * 4 + 1] + 256 * 256 * values[i * 4 + 2] + 256 * 256 * 256 * values[i * 4 + 3]) * 10;
// duration += frameDelay[i];
// }
// }
// }
//}
return duration;
}
}
public void Dispose()
{
if (image != null)
{
image.Dispose();
image = null;
}
//if (imgList != null)
//{
// foreach (var item in imgList)
// {
// item.Dispose();
// }
// imgList = null;
//}
}
public void SaveToFile(string fileName, ImageFormat format)
{
var f = System.Drawing.Imaging.ImageFormat.Jpeg;
switch (format)
{
case ImageFormat.Bmp:
f = System.Drawing.Imaging.ImageFormat.Bmp;
break;
case ImageFormat.Gif:
f = System.Drawing.Imaging.ImageFormat.Gif;
break;
case ImageFormat.Jpeg:
f = System.Drawing.Imaging.ImageFormat.Jpeg;
break;
case ImageFormat.Png:
f = System.Drawing.Imaging.ImageFormat.Png;
break;
default:
break;
}
image.Save(fileName, f);
}
public Stream SaveToStream(ImageFormat format)
{
var m = new MemoryStream();
System.Drawing.Imaging.ImageFormat imageFormat = null;
switch (format)
{
case ImageFormat.Bmp:
imageFormat = System.Drawing.Imaging.ImageFormat.Bmp;
break;
case ImageFormat.Gif:
imageFormat = System.Drawing.Imaging.ImageFormat.Gif;
break;
case ImageFormat.Jpeg:
imageFormat = System.Drawing.Imaging.ImageFormat.Jpeg;
break;
case ImageFormat.Png:
imageFormat = System.Drawing.Imaging.ImageFormat.Png;
break;
}
if (imageFormat == null)
{
throw new Exception("不支持该格式图片:" + format);
}
image.Save(m, imageFormat);
m.Position = 0;
return m;
}
public void SaveToStream(ImageFormat format, Stream m)
{
//var m = new MemoryStream();
System.Drawing.Imaging.ImageFormat imageFormat = null;
switch (format)
{
case ImageFormat.Bmp:
imageFormat = System.Drawing.Imaging.ImageFormat.Bmp;
break;
case ImageFormat.Gif:
imageFormat = System.Drawing.Imaging.ImageFormat.Gif;
break;
case ImageFormat.Jpeg:
imageFormat = System.Drawing.Imaging.ImageFormat.Jpeg;
break;
case ImageFormat.Png:
imageFormat = System.Drawing.Imaging.ImageFormat.Png;
break;
}
if (imageFormat == null)
{
throw new Exception("不支持该格式图片:" + format);
}
image.Save(m, imageFormat);
//m.Position = 0;
//return m;
}
public virtual object Clone()
{
return new GDIPlusImage((System.Drawing.Image)image.Clone());
}
}
}
#endif