public unsafe void Extract(out IntPtr phBmpThumbnail)
{
System.IO.StreamWriter logfile = new System.IO.StreamWriter("C:\thumbs-log.txt", true);
logfile.WriteLine("Called Extract");
logfile.Close();
System.Drawing.Bitmap designBitmap = designFile.DesignToBitmap(3, false, 0, 1.0f);
IntPtr hBmp = designBitmap.GetHbitmap();
phBmpThumbnail = new IntPtr();
// Assuming you already have hBmp as the handle to your Bitmap object...
if (IntPtr.Size == 4)
{
int *pBuffer = (int *)phBmpThumbnail.ToPointer();
* pBuffer = hBmp.ToInt32();
// IMO, casting back to (void*) is not necessary.
// I guess just for formality, that pBuffer points
// to an object, not an int. :)
phBmpThumbnail = new IntPtr((void *)pBuffer);
}
else // 8-bytes, or 64-bit
{
long *pBuffer = (long *)phBmpThumbnail.ToPointer();
* pBuffer = hBmp.ToInt64();
phBmpThumbnail = new IntPtr((void *)pBuffer);
}
}
static void GenerateImage(string filename)
{
try
{
PesFile.PesFile design = new PesFile.PesFile(filename);
Bitmap DrawArea = design.DesignToBitmap(5.0f, false, 0.0f, 1.0f);
Bitmap temp = new Bitmap(DrawArea.Width, DrawArea.Height, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
using (Graphics tempGraph = Graphics.FromImage(temp))
{
tempGraph.FillRectangle(Brushes.White, 0, 0, temp.Width, temp.Height);
tempGraph.DrawImageUnscaled(DrawArea, 0, 0);
tempGraph.Dispose();
temp.Save(System.IO.Path.ChangeExtension(filename, ".png"));
}
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}
private void UpdateDesignImage()
{
if (design == null)
{
// No design loaded - nothing to update
return;
}
// Assume 96 DPI until we can come up with a better way to calculate it
float screenDPI = 96;
Bitmap tempImage = design.DesignToBitmap((float)settings.threadThickness, (settings.filterStiches), settings.filterStitchesThreshold, (screenDPI / design.NativeDPI));
// Rotate image
switch (designRotation)
{
case 90:
tempImage.RotateFlip(RotateFlipType.Rotate90FlipNone);
break;
case 180:
tempImage.RotateFlip(RotateFlipType.Rotate180FlipNone);
break;
case 270:
tempImage.RotateFlip(RotateFlipType.Rotate270FlipNone);
break;
}
// Scale image
if (fitToWindowToolStripMenuItem.Checked)
{
// Calculate size of image based on available drawing area
float windowWidth = panel2.Width - 3;
float windowHeight = panel2.Height - 3;
// Figure out which dimension is more constrained
float widthScale = windowWidth / tempImage.Width;
float heightScale = windowHeight / tempImage.Height;
if (widthScale < heightScale)
{
designScale = widthScale;
}
else
{
designScale = heightScale;
}
}
int width = (int)(tempImage.Width * designScale);
int height = (int)(tempImage.Height * designScale);
if (width < 1 || height < 1)
{
// Image area is too small to update
return;
}
if (width != tempImage.Width || height != tempImage.Height)
{
// Scale image code from http://stackoverflow.com/questions/1922040/resize-an-image-c-sharp
Rectangle destRect = new Rectangle(0, 0, width, height);
Bitmap scaledImage = new Bitmap(width, height);
scaledImage.SetResolution(tempImage.HorizontalResolution, tempImage.VerticalResolution);
using (var graphics = Graphics.FromImage(scaledImage))
{
graphics.CompositingMode = CompositingMode.SourceCopy;
graphics.CompositingQuality = CompositingQuality.HighQuality;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
using (var wrapMode = new ImageAttributes())
{
wrapMode.SetWrapMode(WrapMode.TileFlipXY);
graphics.DrawImage(tempImage, destRect, 0, 0, tempImage.Width, tempImage.Height, GraphicsUnit.Pixel, wrapMode);
}
}
// Keep the scaled image and dispose the intermediate image
tempImage.Dispose();
tempImage = scaledImage;
}
// About to abandon the current DrawArea object, dispose it now
if (DrawArea != null)
{
DrawArea.Dispose();
DrawArea = null;
}
// Add transparency grid
if (settings.transparencyGridEnabled)
{
DrawArea = new Bitmap(tempImage.Width, tempImage.Height);
using (Graphics g = Graphics.FromImage(DrawArea))
{
Color gridColor = settings.transparencyGridColor;
using (Pen gridPen = new Pen(gridColor))
{
int gridSize = settings.transparencyGridSize;
for (int xStart = 0; (xStart * gridSize) < DrawArea.Width; xStart++)
{
for (int yStart = 0; (yStart * gridSize) < DrawArea.Height; yStart++)
{
// Fill even columns in even rows and odd columns in odd rows
if ((xStart % 2) == (yStart % 2))
{
g.FillRectangle(gridPen.Brush, (xStart * gridSize), (yStart * gridSize), gridSize, gridSize);
}
}
}
}
g.DrawImage(tempImage, 0, 0);
// Done with tempImage
tempImage.Dispose();
tempImage = null;
}
}
else
{
// Keeping the object tempImage was pointing at, so don't dispose it
DrawArea = tempImage;
}
panel1.Width = DrawArea.Width;
panel1.Height = DrawArea.Height;
panel1.Invalidate();
panel2LastUpdateSize = panel2.Size;
// Update window title
this.Text = System.IO.Path.GetFileName(loadedFileName) + " (" + (designScale * 100).ToString("0") + "%) - " + APP_TITLE;
}
