/// <summary>
/// Colorize and setup image for final WPF rendering
/// </summary>
/// <param name="x"></param>
/// <param name="vocabularyImage"></param>
/// <param name="templateColor"></param>
void processImage(System.Windows.Media.Brush x, VocabularyImage vocabularyImage, System.Windows.Media.Color templateColor)
{
// store copy of parameters used to generate this image
imageColor = templateColor;
BitmapFrame bitmapFrame = null; // used for colorizing and ultimately drawing to screen
if (vocabularyImage.ImageBytes != null)
{
Stream imageStream = new MemoryStream(vocabularyImage.ImageBytes); // imagebytes expected to be in Pbgra32 or Rgba64
PngBitmapDecoder decoder = new PngBitmapDecoder(imageStream, BitmapCreateOptions.PreservePixelFormat, BitmapCacheOption.Default);
bitmapFrame = decoder.Frames[0];
}
else if (vocabularyImage.EmojiChar != null)
{
bitmapFrame = GetBitmapFrameForEmoji(vocabularyImage.EmojiChar);
}
if (bitmapFrame != null)
{
// if everything worked correctly up to this point we should have a real bitmapFrame
int iWidth = (int)bitmapFrame.PixelWidth;
int iHeight = (int)bitmapFrame.PixelHeight;
Int32 stride = (bitmapFrame.PixelWidth * bitmapFrame.Format.BitsPerPixel + 7) / 8;
byte[] iPixel = ApplyColoring(templateColor, bitmapFrame, iWidth, iHeight);
BitmapSource myBitmapSource = bitmapFrame;
WriteableBitmap wBmp = new WriteableBitmap(myBitmapSource);
wBmp.WritePixels(new Int32Rect(0, 0, iWidth, iHeight), iPixel, stride, 0);
MyImage.Source = wBmp;
}
}
/// <summary>
/// Directly pass a vocabularyImage (emoji or png) to create and colorize
/// </summary>
/// <param name="x"></param>
/// <param name="vocabularyImage"></param>
/// <param name="templateColor"></param>
public CoolImage(System.Windows.Media.Brush x, VocabularyImage vocabularyImage, System.Windows.Media.Color templateColor) : this()
{
if (vocabularyImage == null)
{
throw new ArgumentNullException("null vocabulary image");
}
this.processImage(x, vocabularyImage, templateColor);
}
public static UserControl NewUserControlFrom(FigureTemplate template, VocabularyImage img)
{
UserControl retVal = null;
// create a CoolImage based on a provided image in the ImageDictionary
retVal = new CoolImage(template.Fill.Clone(), template.Letter, template.Color);
return(retVal);
}
/// <summary>
/// Given a word, perform a vocabulary lookup and find/generated associated image then colorize and render to WPF image field
/// </summary>
/// <param name="x"></param>
/// <param name="itemName"></param>
/// <param name="templateColor"></param>
public CoolImage(System.Windows.Media.Brush x, string itemName, System.Windows.Media.Color templateColor) : this()
{
// store copy of parameters used to generate this image
vocabularyImage = Controller.ImageVocab.GetVocabularyImageForWord(itemName);
if (vocabularyImage != null)
{
processImage(x, vocabularyImage, templateColor);
}
else
{
// if no bitmapFrame then fallback to just drawing a letter
this.Character = itemName[0];
this.letterPath.Fill = x;
this.letterPath.Data = MakeCharacterGeometry(GetLetterCharacter(itemName[0]));
this.Width = this.letterPath.Data.Bounds.Width + this.letterPath.Data.Bounds.X + this.letterPath.StrokeThickness / 2;
this.Height = this.letterPath.Data.Bounds.Height + this.letterPath.Data.Bounds.Y + this.letterPath.StrokeThickness / 2;
}
}
