/// <summary>
/// 获取指定文件的等比例缩略图。
/// </summary>
/// <param name="FileName">图片文件全名。</param>
/// <param name="Width">缩略图宽度。</param>
/// <param name="Height">缩略图高度。</param>
/// <param name="Proportion">缩放时维持等比例。</param>
/// <param name="LockSmallImage">锁定小尺寸图片。如果此项设置为 true，当原图像尺寸小于缩略图限制尺寸时返回原图像尺寸。</param>
/// <param name="ImageQuality">输出图片质量。</param>
/// <param name="KeepWhite">指示是否保留空白边距。如果保留空白边距则使用指定的颜色填充，以确保输出的图像的尺寸与指定的尺寸相等。否则输出的图像的尺寸可能小于指定的尺寸。</param>
/// <param name="WhiteFillColor">空白区域填充颜色。</param>
/// <returns>一个 System.Drawing.Image 实例。</returns>
public static System.Drawing.Bitmap GetThumbnailImage(string FileName, int Width, int Height, bool Proportion, bool LockSmallImage, Thinksea.eImageQuality ImageQuality, bool KeepWhite, System.Drawing.Color WhiteFillColor)
{
System.Drawing.Image img = Thinksea.Image.GetImageFromFile(FileName);
try
{
return(Thinksea.Image.GetThumbnailImage(img, Width, Height, Proportion, LockSmallImage, ImageQuality, KeepWhite, WhiteFillColor));
}
finally
{
img.Dispose();
}
}
/// <summary>
/// 获取指定图像的等比例缩略图。
/// </summary>
/// <param name="image">用于提供图像数据的 System.Drawing.Image 实例。</param>
/// <param name="Width">缩略图宽度。</param>
/// <param name="Height">缩略图高度。</param>
/// <param name="Proportion">缩放时维持等比例。</param>
/// <param name="LockSmallImage">锁定小尺寸图片。如果此项设置为 true，当原图像尺寸小于缩略图限制尺寸时返回原图像尺寸。</param>
/// <param name="ImageQuality">输出图片质量。</param>
/// <param name="KeepWhite">指示是否保留空白边距。如果保留空白边距则使用指定的颜色填充，以确保输出的图像的尺寸与指定的尺寸相等。否则输出的图像的尺寸可能小于指定的尺寸。</param>
/// <param name="WhiteFillColor">空白区域填充颜色。</param>
/// <returns>一个 System.Drawing.Image 实例。</returns>
public static System.Drawing.Bitmap GetThumbnailImage(System.Drawing.Image image, int Width, int Height, bool Proportion, bool LockSmallImage, Thinksea.eImageQuality ImageQuality, bool KeepWhite, System.Drawing.Color WhiteFillColor)
{
if (image == null)
{
throw new System.ArgumentNullException("image");
}
System.Drawing.RectangleF ImageRectangleF;
if (Proportion || (LockSmallImage && KeepWhite))
{
ImageRectangleF = Thinksea.Image.GetThumbnailImageSize(image.Width, image.Height, Width, Height, LockSmallImage);
}
else
{
ImageRectangleF = new System.Drawing.RectangleF(0, 0, Width, Height);
if (LockSmallImage)
{
if (image.Width < Width)
{
ImageRectangleF.Width = image.Width;
}
if (image.Height < Height)
{
ImageRectangleF.Height = image.Height;
}
}
}
System.Drawing.Imaging.PixelFormat outputFormat;
System.Drawing.Bitmap bitmap = null;
if (Image.IsPixelFormatIndexed(image.PixelFormat))
{
outputFormat = System.Drawing.Imaging.PixelFormat.Format32bppArgb;
if (KeepWhite)
{
bitmap = new System.Drawing.Bitmap(Width, Height, outputFormat);
}
else
{
bitmap = new System.Drawing.Bitmap(System.Convert.ToInt32(ImageRectangleF.Width == 0 ? 1 : ImageRectangleF.Width), System.Convert.ToInt32(ImageRectangleF.Height == 0 ? 1 : ImageRectangleF.Height), outputFormat);
}
}
else
{
switch (image.PixelFormat)
{
case System.Drawing.Imaging.PixelFormat.Format48bppRgb:
case System.Drawing.Imaging.PixelFormat.Format64bppPArgb:
case System.Drawing.Imaging.PixelFormat.Format64bppArgb:
outputFormat = System.Drawing.Imaging.PixelFormat.Format32bppArgb;
break;
default:
outputFormat = image.PixelFormat;
break;
}
if (KeepWhite)
{
bitmap = new System.Drawing.Bitmap(Width, Height, outputFormat);
}
else
{
bitmap = new System.Drawing.Bitmap(System.Convert.ToInt32(ImageRectangleF.Width == 0 ? 1 : ImageRectangleF.Width), System.Convert.ToInt32(ImageRectangleF.Height == 0 ? 1 : ImageRectangleF.Height), outputFormat);
}
}
using (System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap))
{
switch (ImageQuality)
{
case Thinksea.eImageQuality.High:
{
bitmap.SetResolution(image.HorizontalResolution, image.VerticalResolution);
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
}
break;
case Thinksea.eImageQuality.Low:
{
//System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(System.Convert.ToInt32(ImageRectangleF.Width == 0 ? 1 : ImageRectangleF.Width), System.Convert.ToInt32(ImageRectangleF.Height == 0 ? 1 : ImageRectangleF.Height));
//System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);
//g.DrawImage(image, 0, 0, bitmap.Width, bitmap.Height);
bitmap.SetResolution((image.HorizontalResolution > 96.0F ? 96.0F : image.HorizontalResolution), (image.VerticalResolution > 96.0F ? 96.0F : image.VerticalResolution));
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.None;
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.Low;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.Default;
}
break;
case Thinksea.eImageQuality.Web:
{
//System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(System.Convert.ToInt32(ImageRectangleF.Width == 0 ? 1 : ImageRectangleF.Width), System.Convert.ToInt32(ImageRectangleF.Height == 0 ? 1 : ImageRectangleF.Height));
//System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);
//g.DrawImage(image, 0, 0, bitmap.Width, bitmap.Height);
bitmap.SetResolution((image.HorizontalResolution > 72.0F ? 72.0F : image.HorizontalResolution), (image.VerticalResolution > 72.0F ? 72.0F : image.VerticalResolution));
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.None;
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.Low;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.Default;
}
break;
}
if (KeepWhite)
{
if (WhiteFillColor != System.Drawing.Color.Transparent)
{
g.Clear(WhiteFillColor);
}
g.DrawImage(image, ImageRectangleF);
}
else
{
g.DrawImage(image, 0, 0, bitmap.Width, bitmap.Height);
}
}
//switch (ImageQuality)
//{
// case Thinksea.eImageQuality.High:
// {
// }
// break;
// case Thinksea.eImageQuality.Low:
// {
// //System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(System.Convert.ToInt32(ImageRectangleF.Width == 0 ? 1 : ImageRectangleF.Width), System.Convert.ToInt32(ImageRectangleF.Height == 0 ? 1 : ImageRectangleF.Height));
// //System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);
// //g.DrawImage(image, 0, 0, bitmap.Width, bitmap.Height);
// //g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.None;
// //g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.Bilinear;
// //g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.Default;
// bitmap = new System.Drawing.Bitmap(image.GetThumbnailImage(System.Convert.ToInt32(ImageRectangleF.Width == 0 ? 1 : ImageRectangleF.Width), System.Convert.ToInt32(ImageRectangleF.Height == 0 ? 1 : ImageRectangleF.Height), delegate()
// {
// return false;
// }, System.IntPtr.Zero));
// }
// break;
//}
return(bitmap);
}
/// <summary>
/// 获取指定图像的等比例缩略图。
/// </summary>
/// <param name="image">用于提供图像数据的 System.Drawing.Image 实例。</param>
/// <param name="width">缩略图宽度。取值为 0 时表示忽略此参数。</param>
/// <param name="height">缩略图高度。取值为 0 时表示忽略此参数。</param>
/// <param name="proportion">缩放时维持等比例。</param>
/// <param name="lockSmallImage">锁定小尺寸图片。如果此项设置为 true，当原图像尺寸小于缩略图限制尺寸时返回原图像尺寸。</param>
/// <param name="imageQuality">输出图片质量。</param>
/// <param name="keepWhite">指示是否保留空白边距。如果保留空白边距则使用指定的颜色填充，以确保输出的图像的尺寸与指定的尺寸相等。否则输出的图像的尺寸可能小于指定的尺寸。</param>
/// <param name="whiteFillColor">空白区域填充颜色。</param>
/// <returns>一个 System.Drawing.Image 实例。</returns>
public static System.Drawing.Bitmap GetThumbnailImage(System.Drawing.Image image, int width, int height, bool proportion, bool lockSmallImage, Thinksea.eImageQuality imageQuality, bool keepWhite, System.Drawing.Color whiteFillColor)
{
if (image == null)
{
throw new System.ArgumentNullException(nameof(image));
}
System.Drawing.RectangleF ImageRectangleF;
if (width > 0 && height > 0 && proportion == false && keepWhite == true)
{
ImageRectangleF = new System.Drawing.RectangleF(0, 0, width, height);
if (lockSmallImage)
{
if (image.Width < width)
{
ImageRectangleF.Width = image.Width;
ImageRectangleF.X = (width - image.Width) / 2.0F;
}
if (image.Height < height)
{
ImageRectangleF.Height = image.Height;
ImageRectangleF.Y = (height - image.Height) / 2.0F;
}
}
}
else
{
ImageRectangleF = Thinksea.Image.GetThumbnailImageSize(image.Width, image.Height, width, height, lockSmallImage);
if (width == 0)
{
width = (int)System.Math.Floor(ImageRectangleF.Right);
}
if (height == 0)
{
height = (int)System.Math.Floor(ImageRectangleF.Bottom);
}
}
System.Drawing.Imaging.PixelFormat outputFormat;
System.Drawing.Bitmap bitmap;
if (Image.IsPixelFormatIndexed(image.PixelFormat))
{
outputFormat = System.Drawing.Imaging.PixelFormat.Format32bppArgb;
bitmap = new System.Drawing.Bitmap(width, height, outputFormat);
}
else
{
switch (image.PixelFormat)
{
case System.Drawing.Imaging.PixelFormat.Format48bppRgb:
case System.Drawing.Imaging.PixelFormat.Format64bppPArgb:
case System.Drawing.Imaging.PixelFormat.Format64bppArgb:
outputFormat = System.Drawing.Imaging.PixelFormat.Format32bppArgb;
break;
default:
outputFormat = image.PixelFormat;
break;
}
bitmap = new System.Drawing.Bitmap(width, height, outputFormat);
}
using (System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap))
{
switch (imageQuality)
{
case Thinksea.eImageQuality.High:
{
bitmap.SetResolution(image.HorizontalResolution, image.VerticalResolution);
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
}
break;
case Thinksea.eImageQuality.Low:
{
//System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(System.Convert.ToInt32(ImageRectangleF.Width == 0 ? 1 : ImageRectangleF.Width), System.Convert.ToInt32(ImageRectangleF.Height == 0 ? 1 : ImageRectangleF.Height));
//System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);
//g.DrawImage(image, 0, 0, bitmap.Width, bitmap.Height);
bitmap.SetResolution((image.HorizontalResolution > 96.0F ? 96.0F : image.HorizontalResolution), (image.VerticalResolution > 96.0F ? 96.0F : image.VerticalResolution));
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.None;
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.Low;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.Default;
}
break;
case Thinksea.eImageQuality.Web:
{
//System.Drawing.Bitmap bitmap = new System.Drawing.Bitmap(System.Convert.ToInt32(ImageRectangleF.Width == 0 ? 1 : ImageRectangleF.Width), System.Convert.ToInt32(ImageRectangleF.Height == 0 ? 1 : ImageRectangleF.Height));
//System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitmap);
//g.DrawImage(image, 0, 0, bitmap.Width, bitmap.Height);
bitmap.SetResolution((image.HorizontalResolution > 72.0F ? 72.0F : image.HorizontalResolution), (image.VerticalResolution > 72.0F ? 72.0F : image.VerticalResolution));
g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.None;
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.Low;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.Default;
}
break;
}
if (keepWhite && whiteFillColor != System.Drawing.Color.Transparent)
{
g.Clear(whiteFillColor);
}
g.DrawImage(image, ImageRectangleF);
}
return(bitmap);
}
/// <summary>
/// 获取指定文件的等比例缩略图。
/// </summary>
/// <param name="fileName">图片文件全名。</param>
/// <param name="width">缩略图宽度。取值为 0 时表示忽略此参数。</param>
/// <param name="height">缩略图高度。取值为 0 时表示忽略此参数。</param>
/// <param name="proportion">缩放时维持等比例。</param>
/// <param name="lockSmallImage">锁定小尺寸图片。如果此项设置为 true，当原图像尺寸小于缩略图限制尺寸时返回原图像尺寸。</param>
/// <param name="imageQuality">输出图片质量。</param>
/// <param name="keepWhite">指示是否保留空白边距。如果保留空白边距则使用指定的颜色填充，以确保输出的图像的尺寸与指定的尺寸相等。否则输出的图像的尺寸可能小于指定的尺寸。</param>
/// <param name="whiteFillColor">空白区域填充颜色。</param>
/// <returns>一个 System.Drawing.Image 实例。</returns>
public static System.Drawing.Bitmap GetThumbnailImage(string fileName, int width, int height, bool proportion, bool lockSmallImage, Thinksea.eImageQuality imageQuality, bool keepWhite, System.Drawing.Color whiteFillColor)
{
using (System.Drawing.Image img = Thinksea.Image.GetImageFromFile(fileName))
{
return(Thinksea.Image.GetThumbnailImage(img, width, height, proportion, lockSmallImage, imageQuality, keepWhite, whiteFillColor));
}
}
private void Run()
{
try
{
bool 保持原图比例 = (bool)this.GetPropertyValue(this.cb保持原图比例, "Checked");
bool 保持小图尺寸 = (bool)this.GetPropertyValue(this.cb保持小图尺寸, "Checked");
bool 转换为统一格式 = (bool)this.GetPropertyValue(this.cb转换为统一格式, "Checked");
Thinksea.eImageQuality 图片质量 = (Thinksea.eImageQuality) this.GetPropertyValue(this.cmb输出图片质量, "SelectedValue");
ImageFormat 中的统一格式 = (ImageFormat)this.GetPropertyValue(this.cmb存盘格式, "SelectedItem");
int maxWidth = 0;
if ((bool)this.GetPropertyValue(this.cb最大宽度, "Checked"))
{
maxWidth = System.Convert.ToInt32(this.GetPropertyValue(this.nud最大宽度, "Value"));
}
int maxHeight = 0;
if ((bool)this.GetPropertyValue(this.cb最大高度, "Checked"))
{
maxHeight = System.Convert.ToInt32(this.GetPropertyValue(this.nud最大高度, "Value"));
}
string[] files = this.GetFiles();
this.SetPropertyValue(this.toolStripProgressBar1, "Maximum", files.Length);
for (int i = 0; i < files.Length && this.请求中止全部任务 == false; i++)
{
string file = files[i];
this.SetPropertyValue(this.toolStripProgressBar1, "Value", i);
//this.SetPropertyValue(this.toolStripStatusLabel正在处理的文件, "Text", file);
this.正在处理的文件 = file;
string outputFile = file;
System.IO.MemoryStream outputTempFileStream = new System.IO.MemoryStream();
System.Drawing.Imaging.ImageFormat imageFormat;
System.Drawing.Bitmap bmp = Thinksea.Image.GetThumbnailImage(file, maxWidth, maxHeight, 保持原图比例, 保持小图尺寸, 图片质量, false, System.Drawing.Color.Transparent);
try
{
imageFormat = bmp.RawFormat;
if (转换为统一格式)
{
imageFormat = 中的统一格式.Format;
outputFile = System.IO.Path.ChangeExtension(outputFile, 中的统一格式.Extension);
}
else
{
string ext = System.IO.Path.GetExtension(file);
foreach (var tmp in this.ImageFormats)
{
if (tmp.Extension == ext.ToLower())
{
imageFormat = tmp.Format;
break;
}
}
}
//bmp.Save(outputTempFile, imageFormat);
bmp.Save(outputTempFileStream, imageFormat);
}
finally
{
bmp.Dispose();
}
// {
// System.IO.FileInfo fiSource = new System.IO.FileInfo(file);
// System.IO.FileInfo fiTemp = new System.IO.FileInfo(outputTempFile);
// if (fiTemp.Length > fiSource.Length)
// {
// fiTemp.Delete();
// fiSource.CopyTo(outputTempFile);
// this.WriteLog(string.Format(@"文件压缩失败，由于压缩后比原始文件大，所以输出文件使用原始文件数据。
// 文件：{0}", file));
// }
// }
// if (System.IO.File.Exists(outputFile))
// {
// System.IO.File.Delete(outputFile);
// }
// System.IO.File.Move(outputTempFile, outputFile);
System.IO.FileInfo fiSource = new System.IO.FileInfo(file);
System.IO.FileInfo fiOutputFile = new System.IO.FileInfo(outputFile);
if (outputTempFileStream.Length < fiSource.Length || fiSource.Extension.ToLower() != fiOutputFile.Extension.ToLower()) //如果可以压缩的更小或者输出文件类型不同，则保留压缩后的文件。
{
string outputTempFile = System.IO.Path.Combine(System.IO.Path.GetDirectoryName(outputFile), System.Guid.NewGuid().ToString("N"));
System.IO.File.WriteAllBytes(outputTempFile, outputTempFileStream.ToArray()); //输出到临时文件。
if (System.IO.File.Exists(outputFile)) //删除目标文件。
{
System.IO.File.Delete(outputFile);
}
//if (fiSource.FullName != fiOutputFile.FullName) //删除原始文件。
//{
// fiSource.Delete();
//}
System.IO.File.Move(outputTempFile, outputFile); //将临时文件名更名为目标文件。
}
else
{
if (fiSource.FullName.ToLower() != fiOutputFile.FullName.ToLower()) //如果原始文件与目标文件名称不同则直接改名，否则保留原始文件即可。
{
//fiTemp.Delete();
//fiSource.CopyTo(outputTempFile);
System.IO.File.Move(file, outputFile); //将临时文件名更名为目标文件。
}
this.WriteLog(string.Format(@"文件压缩失败，由于压缩后比原始文件大，所以输出文件使用原始文件数据。
文件：{0}", file));
}
}
if (this.请求中止全部任务)
{
//this.SetPropertyValue(this.toolStripStatusLabel正在处理的文件, "Text", "用户中止任务。");
this.正在处理的文件 = "用户中止任务。";
}
else
{
this.SetPropertyValue(this.toolStripProgressBar1, "Value", files.Length);
//this.SetPropertyValue(this.toolStripStatusLabel正在处理的文件, "Text", "任务已完成。");
this.正在处理的文件 = "任务已完成。";
}
}
finally
{
this.SetPropertyValue(this.toolStripButton添加文件, "Enabled", true);
this.SetPropertyValue(this.toolStripButton添加文件夹, "Enabled", true);
//this.SetPropertyValue(this.toolStripButton开始, "Enabled", true);
this.SetPropertyValue(this.toolStripButton开始, "Image", global::CompressPics.Properties.Resources.run);
this.SetPropertyValue(this.toolStripButton开始, "Text", "开始");
this.SetPropertyValue(this.panel2, "Enabled", true);
//this.timer1.Stop();
this.thread压缩 = null;
}
}
