private void _btnOk_Click(object sender, System.EventArgs e)
{
ImageWidth = (int)_numWidth.Value;
ImageHeight = (int)_numHeight.Value;
if (_rbButtonNormal.Checked)
{
Flags = RasterSizeFlags.None;
}
else if (_rbButtonFavorBlack.Checked)
{
Flags = RasterSizeFlags.FavorBlack;
}
else if (_rbButtonResample.Checked)
{
Flags = RasterSizeFlags.Resample;
}
else if (_rbButtonFavorBlackOrResample.Checked)
{
Flags = RasterSizeFlags.FavorBlack | RasterSizeFlags.Resample;
}
else if (_rbButtonBicubic.Checked)
{
Flags = RasterSizeFlags.Bicubic;
}
else if (_rbButtonFavorBlackOrBicubic.Checked)
{
Flags = RasterSizeFlags.FavorBlack | RasterSizeFlags.Bicubic;
}
_initialFlags = Flags;
}
private void ResizeDialog_Load(object sender, System.EventArgs e)
{
Flags = _initialFlags;
_numWidth.Value = ImageWidth;
_numHeight.Value = ImageHeight;
switch (Flags)
{
case RasterSizeFlags.FavorBlack:
_rbButtonFavorBlack.Checked = true;
break;
case RasterSizeFlags.Resample:
_rbButtonResample.Checked = true;
break;
case RasterSizeFlags.FavorBlack | RasterSizeFlags.Resample:
_rbButtonFavorBlackOrResample.Checked = true;
break;
case RasterSizeFlags.Bicubic:
_rbButtonBicubic.Checked = true;
break;
case RasterSizeFlags.Bicubic | RasterSizeFlags.FavorBlack:
_rbButtonFavorBlackOrBicubic.Checked = true;
break;
default:
_rbButtonNormal.Checked = true;
break;
}
}
private void _btnOk_Click(object sender, System.EventArgs e)
{
// Set the new values for the selected RasterSizeFlags flags and apply to the loaded image.
ImageWidth = (int)_numWidth.Value;
ImageHeight = (int)_numHeight.Value;
if (_rbButtonNormal.Checked)
{
Flags = RasterSizeFlags.None;
}
else if (_rbButtonFavorBlack.Checked)
{
Flags = RasterSizeFlags.FavorBlack;
}
else if (_rbButtonResample.Checked)
{
Flags = RasterSizeFlags.Resample;
}
else if (_rbButtonFavorBlackOrResample.Checked)
{
Flags = RasterSizeFlags.FavorBlack | RasterSizeFlags.Resample;
}
else if (_rbButtonBicubic.Checked)
{
Flags = RasterSizeFlags.Bicubic;
}
else if (_rbButtonFavorBlackOrBicubic.Checked)
{
Flags = RasterSizeFlags.FavorBlack | RasterSizeFlags.Bicubic;
}
_initialFlags = Flags;
}
// Optionally resizes the image before saving it (always preserving the original aspect ratio)
public static void ResizeImage(RasterImage image, int width, int height)
{
SizeCommand sizeCommand;
int resizeWidth;
int resizeHeight;
RasterSizeFlags flags = RasterSizeFlags.Resample;
if (image.BitsPerPixel == 1)
{
flags |= RasterSizeFlags.FavorBlack;
}
// First check if its a FAX image (with different resolution), if so, resize it too
if (image.XResolution != 0 && image.YResolution != 0 && Math.Abs(image.XResolution - image.YResolution) > 2)
{
// Yes
if (image.XResolution > image.YResolution)
{
resizeWidth = image.ImageWidth;
resizeHeight = (int)((double)image.ImageHeight * (double)image.XResolution / (double)image.YResolution);
}
else
{
resizeHeight = image.ImageHeight;
resizeWidth = (int)((double)image.ImageWidth * (double)image.YResolution / (double)image.XResolution);
}
sizeCommand = new SizeCommand(resizeWidth, resizeHeight, flags);
sizeCommand.Run(image);
image.XResolution = Math.Max(image.XResolution, image.YResolution);
image.YResolution = image.XResolution;
}
// Check user resize options, and resize only if needed
if ((width == 0 && height == 0) ||
(image.ImageWidth <= width && image.ImageHeight <= height))
{
return;
}
resizeWidth = width;
resizeHeight = height;
// If width or height is 0, means the other is a fixed value and the missing value must be calculated
// saving the aspect ratio
if (resizeHeight == 0)
{
resizeHeight = (int)((double)image.ImageHeight * (double)resizeWidth / (double)image.ImageWidth + 0.5);
}
else if (resizeWidth == 0)
{
resizeWidth = (int)((double)image.ImageWidth * (double)resizeHeight / (double)image.ImageHeight + 0.5);
}
// Calculate the destination size
LeadRect rc = new LeadRect(0, 0, resizeWidth, resizeHeight);
rc = RasterImage.CalculatePaintModeRectangle(
image.ImageWidth,
image.ImageHeight,
rc,
RasterPaintSizeMode.Fit,
RasterPaintAlignMode.Near,
RasterPaintAlignMode.Near);
image.ChangeViewPerspective(RasterViewPerspective.TopLeft);
sizeCommand = new SizeCommand(rc.Width, rc.Height, flags);
sizeCommand.Run(image);
// Note, if the image was 1BPP, ScaleToGray converts it to 8, the format of the returned image is dealt with
// in PrepareToSave
// Since we resized the image, the original DPI is not correct anymore
image.XResolution = 96;
image.YResolution = 96;
}
