public Bitmap Caption(Bitmap original, string caption, bool?appendDateTakenToCaption, string dateTaken, Rotations rotation, CaptionAlignments?captionAlignment, string fontName, float fontSize, string fontType, bool fontBold, Brush brush, Color backgroundColour, CancellationToken cancellationToken)
{
using (var logger = _logger.Block())
{
if (cancellationToken.IsCancellationRequested)
{
return(null);
}
logger.Trace("Rotating image...");
var rotated = _imageRotationService.Rotate(original, rotation);
if (cancellationToken.IsCancellationRequested)
{
return(null);
}
logger.Trace($@"Captioning image with ""{caption}""...");
return(_imageCaptionService.Caption(rotated, caption, appendDateTakenToCaption, dateTaken, rotation, captionAlignment, fontName, fontSize, fontType, fontBold, brush, backgroundColour, cancellationToken));
}
}
public Bitmap Caption(Bitmap image, string caption, bool?appendDateTakenToCaption, string dateTaken, Rotations?rotation, CaptionAlignments?captionAlignment, string fontName, float fontSize, string fontType, bool fontBold, Brush brush, Color backgroundColor, CancellationToken cancellationToken)
{
using (var logger = _logger.Block())
{
if (cancellationToken.IsCancellationRequested)
{
return(null);
}
logger.Trace($"Creating a canvas {_canvasWidth}px x {_canvasHeight}px...");
var canvas = new Bitmap(_canvasWidth, _canvasHeight);
try
{
if (cancellationToken.IsCancellationRequested)
{
return(null);
}
logger.Trace($"Resizing image to fit canvas {_canvasWidth}px x {_canvasHeight}px...");
var aspectRatio = Math.Max((double)image.Width / _canvasWidth, (double)image.Height / _canvasHeight);
var imageHeight = (int)(image.Height / aspectRatio);
var imageWidth = (int)(image.Width / aspectRatio);
var imageX = (_canvasWidth - imageWidth) / 2;
var imageY = (_canvasHeight - imageHeight) / 2;
using (var resizedImage = new Bitmap(imageWidth, imageHeight))
{
if (cancellationToken.IsCancellationRequested)
{
return(null);
}
logger.Trace("Getting graphics manager for new image...");
using (var graphics = Graphics.FromImage(resizedImage))
{
logger.Trace("Setting up graphics manager...");
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.CompositingQuality = CompositingQuality.HighQuality;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
logger.Trace("Drawing resized image...");
graphics.DrawImage(image, 0, 0, imageWidth, imageHeight);
}
logger.Trace($@"Adding caption ""{caption}"" to image...");
using (var resizedWithCaptionImage = _imageCaptionService.Caption(resizedImage, caption, appendDateTakenToCaption, dateTaken, rotation, captionAlignment, fontName, fontSize, fontType, fontBold, brush, backgroundColor, cancellationToken))
{
if (cancellationToken.IsCancellationRequested)
{
return(null);
}
logger.Trace("Getting graphics manager for canvas...");
using (var graphics = Graphics.FromImage(canvas))
{
logger.Trace("Setting up graphics manager...");
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.CompositingQuality = CompositingQuality.HighQuality;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
logger.Trace("Drawing resized image...");
graphics.DrawImage(resizedWithCaptionImage, imageX, imageY, imageWidth, imageHeight);
}
}
}
return(canvas);
}
finally
{
// release memory
if (cancellationToken.IsCancellationRequested)
{
canvas.Dispose();
}
}
}
}
public Bitmap Caption(Bitmap original, string caption, bool?appendDateTakenToCaption, string dateTaken, Rotations rotation, CaptionAlignments?captionAlignment, string fontName, float fontSize, string fontType, bool fontBold, Brush brush, Color backgroundColour, CancellationToken cancellationToken)
{
using (var logger = _logger.Block())
{
logger.Trace($"Creating a canvas {_canvasWidth}px x {_canvasHeight}px...");
var canvas = new Bitmap(_canvasWidth, _canvasHeight);
try
{
if (cancellationToken.IsCancellationRequested)
{
return(null);
}
logger.Trace("Rotating image...");
using (var rotated = _imageRotationService.Rotate(original, rotation))
{
if (cancellationToken.IsCancellationRequested)
{
return(null);
}
logger.Trace($@"Resizing rotated image to fit a canvas {_canvasWidth}px x {_canvasHeight}px...");
var aspectRatio = Math.Max(rotated.Height / (double)_canvasHeight, rotated.Width / (double)_canvasWidth);
var resizedHeight = Convert.ToInt32(original.Height / aspectRatio);
var resizedWidth = Convert.ToInt32(original.Width / aspectRatio);
var resizedX = (_canvasWidth - resizedWidth) / 2;
var resizedY = (_canvasHeight - resizedHeight) / 2;
using (var resized = new Bitmap(resizedWidth, resizedHeight))
{
if (cancellationToken.IsCancellationRequested)
{
return(null);
}
using (var graphics = Graphics.FromImage(resized))
{
graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
graphics.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
graphics.DrawImage(rotated, 0, 0, resizedWidth, resizedHeight);
}
using (var captioned = _imageCaptionService.Caption(resized, caption, appendDateTakenToCaption, dateTaken, rotation, captionAlignment, fontName, fontSize, fontType, fontBold, brush, backgroundColour, cancellationToken))
{
if (cancellationToken.IsCancellationRequested)
{
return(null);
}
using (var graphics = Graphics.FromImage(canvas))
{
graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
graphics.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
graphics.DrawImage(captioned, resizedX, resizedY, resizedWidth, resizedHeight);
}
}
}
}
if (cancellationToken.IsCancellationRequested)
{
return(null);
}
return(canvas);
}
finally
{
if (cancellationToken.IsCancellationRequested)
{
canvas.Dispose();
}
}
}
}