public ImageWorkUI()
{
InitializeComponent();
cbFormats.DataSource = new BindingSource(FormatPreset.ComboBoxOptions, null);
cbFormats.DisplayMember = "Name";
_currentFormatPreset = FormatPreset.Original;
cbResolutions.DataSource = new BindingSource(ResolutionPreset.ComboBoxOptions, null);
cbResolutions.DisplayMember = "Name";
_currentResolutionPreset = ResolutionPreset.Original;
}
public ImageWorkUI(string imageFile, XmlNode relationshipXmlNode) : this()
{
Original = new ImageWithInfo(imageFile);
Optimized = Original;
this.RelationshipNode = relationshipXmlNode;
// Automatic recommendation - set the upper max resolution to 1600x900 and change to 80% JPEG
if ((Original.Width > 1600) || (Original.Height > 900))
{
_currentResolutionPreset = ResolutionPreset.ComboBoxOptions.First(opt => (opt.Width == 1600) && (opt.Height == 900));
_currentFormatPreset = FormatPreset.ComboBoxOptions.First(opt => (opt.FormatName == "JPG") && (opt.QualityLevel == 80));
}
cbResolutions.SelectedItem = _currentResolutionPreset;
// Automatic recommendation - if pixel-byte density is higher than 20% and the format is PNG, convert to a 70% JPG
if ((Original.BytesPerPixel > 0.2) && (Original.Type == ImageWithInfo.ImageTypes.Png) && (_currentFormatPreset == FormatPreset.Original))
{
_currentFormatPreset = FormatPreset.ComboBoxOptions.First(opt => (opt.FormatName == "JPG") && (opt.QualityLevel == 70));
}
// If we're scaling a JPG, try to preserve the quality (use 80% instead of 70%)
//if ((_currentResolutionPreset != ResolutionPreset.Original) && (Original.Type == ImageWithInfo.ImageTypes.Jpg))
//{
// _currentFormatPreset = FormatPreset.ComboBoxOptions.First(opt => (opt.FormatName == "JPG") && (opt.QualityLevel == 80));
//}
cbFormats.SelectedItem = _currentFormatPreset;
// Set up originals
pbOriginal.Image = Original.Image;
pbOptimized.Image = Original.Image; // This will get updated with the optimized image when initialization is done
pbOriginal.MaximumSize = new Size(Original.Width, Original.Height);
pbOptimized.MaximumSize = pbOriginal.MaximumSize;
int[] scaledSizes = Original.GetScaledSizeFromWidth(pbOriginal.Size.Width);
pbOriginal.Size = new Size(scaledSizes[0], scaledSizes[1]);
pbOptimized.Size = new Size(scaledSizes[0], scaledSizes[1]);
// Populate info about the original file
lblOriginalImage.Text = "Original Image: " + Original.GetShortInfo();
// Finished
Initialized = true;
}
public Bitmap GetScaledImage(ResolutionPreset Resolution)
{
// Set our maximum height/width
float maxWidth = Resolution.Width;
float maxHeight = Resolution.Height;
// Allow scaling down but prevent scaling up (we don't want to increase file size!)
float scale = Math.Min(1, Math.Min(maxWidth / Width, maxHeight / Height));
// If we're not scaling down, just skip the rest of the process
if (scale == 1)
{
return(Image);
}
// If we're scaling down, calculate the new width/height
int scaledWidth = (int)(Width * scale);
int scaledHeight = (int)(Height * scale);
// Create a target, empty image with the new size
Bitmap scaledImage = new Bitmap((int)scaledWidth, (int)scaledHeight);
using (Graphics g = Graphics.FromImage(scaledImage))
{
// Use the highest quality scaling operations available
g.SmoothingMode = SmoothingMode.AntiAlias;
g.InterpolationMode = InterpolationMode.High;
g.CompositingQuality = CompositingQuality.HighQuality;
// Fill in our background with black
g.FillRectangle(Brushes.Black, new RectangleF(0, 0, scaledWidth, scaledHeight));
// Copy our scaled image into place
g.DrawImage(Image, new Rectangle(0, 0, scaledWidth, scaledHeight));
}
// Return the result
return(scaledImage);
}
public ImageWithInfo GenerateOptimized_PNG(long BitDepth, ResolutionPreset Resolution)
{
// Initialize encoders
if (_pngEncoder == null)
{
_initEncoderInfo();
}
EncoderParameters toFormatParams = new EncoderParameters(1);
toFormatParams.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.ColorDepth, BitDepth);
MemoryStream ms = new MemoryStream();
Bitmap scaledImage = Image;
if (Resolution.Width > 0)
{
scaledImage = GetScaledImage(Resolution);
}
scaledImage.Save(ms, _pngEncoder, toFormatParams);
return(new ImageWithInfo(ms));
}
