/// <summary>
/// unscale the supplied NativeSizeFloat according to the supplied dpi
/// </summary>
/// <param name="size">NativeSizeFloat to resize</param>
/// <param name="dpi">current dpi, normal is 96.</param>
/// <param name="scaleModifier">A function which can modify the scale factor</param>
/// <returns>NativeSize unscaled</returns>
public static NativeSizeFloat UnscaleWithDpi(NativeSizeFloat size, uint dpi, Func <double, double> scaleModifier = null)
{
var dpiUnscaleFactor = DpiUnscaleFactor(dpi);
if (scaleModifier != null)
{
dpiUnscaleFactor = scaleModifier(dpiUnscaleFactor);
}
return(new NativeSizeFloat(dpiUnscaleFactor * size.Width, dpiUnscaleFactor * size.Height));
}
private void Test_NativeSizeFloat_Operators()
{
var nativeSize1 = new NativeSizeFloat(123, 456);
var nativeSize2 = new NativeSizeFloat(123, 456);
var drawingSize = new System.Drawing.Size(123, 456);
var windowsSize = new System.Windows.Size(123, 456);
var drawingSizeNotEqual = new System.Drawing.Size(456, 123);
var windowsSizeNotEqual = new System.Windows.Size(456, 123);
Assert.True(nativeSize1 == nativeSize2);
Assert.True(nativeSize1 == drawingSize);
Assert.True(drawingSize == nativeSize1);
Assert.False(nativeSize1 != drawingSize);
Assert.False(drawingSize != nativeSize1);
Assert.True(drawingSizeNotEqual != nativeSize1);
Assert.True(nativeSize1 == windowsSize);
Assert.True(windowsSize == nativeSize1);
Assert.False(nativeSize1 != windowsSize);
Assert.False(windowsSize != nativeSize1);
Assert.True(windowsSizeNotEqual != nativeSize1);
}
public static NativeSize Round(this NativeSizeFloat size)
{
return(new NativeSize((int)Math.Round(size.Width), (int)Math.Round(size.Height)));
}
public static NativeSizeFloat ChangeHeight(this NativeSizeFloat size, float height)
{
return(new NativeSizeFloat(size.Width, height));
}
public static NativeSizeFloat ChangeWidth(this NativeSizeFloat size, float width)
{
return(new NativeSizeFloat(width, size.Height));
}
/// <summary>
/// Unscale the supplied NativeSizeFloat to the current dpi
/// </summary>
/// <param name="size">NativeSizeFloat to unscale</param>
/// <param name="scaleModifier">A function which can modify the scale factor</param>
/// <returns>NativeSizeFloat unscaled</returns>
public NativeSizeFloat UnscaleWithCurrentDpi(NativeSizeFloat size, Func <double, double> scaleModifier = null)
{
return(UnscaleWithDpi(size, Dpi, scaleModifier));
}
public static NativeRectFloat Resize(this NativeRectFloat rect, NativeSizeFloat size)
{
return(new NativeRectFloat(rect.Location, size));
}
private void DrawImageForPrint(object sender, PrintPageEventArgs e)
{
// Create the output settins
var printOutputSettings = new SurfaceOutputSettings(OutputFormats.png, 100, false);
ApplyEffects(printOutputSettings);
var disposeImage = ImageOutput.CreateBitmapFromSurface(_surface, printOutputSettings, out var bitmap);
try
{
var alignment = _coreConfig.OutputPrintCenter ? ContentAlignment.MiddleCenter : ContentAlignment.TopLeft;
// prepare timestamp
float footerStringWidth = 0;
float footerStringHeight = 0;
string footerString = null; //DateTime.Now.ToLongDateString() + " " + DateTime.Now.ToLongTimeString();
if (_coreConfig.OutputPrintFooter)
{
footerString = FilenameHelper.FillPattern(_coreConfig.OutputPrintFooterPattern, _captureDetails, false);
using (var f = new Font(FontFamily.GenericSansSerif, 10, FontStyle.Regular))
{
footerStringWidth = e.Graphics.MeasureString(footerString, f).Width;
footerStringHeight = e.Graphics.MeasureString(footerString, f).Height;
}
}
// Get a rectangle representing the printable Area
var pageRect = e.PageSettings.PrintableArea;
if (e.PageSettings.Landscape)
{
var origWidth = pageRect.Width;
pageRect.Width = pageRect.Height;
pageRect.Height = origWidth;
}
// Subtract the dateString height from the available area, this way the area stays free
pageRect.Height -= footerStringHeight;
var gu = GraphicsUnit.Pixel;
var imageRect = bitmap.GetBounds(ref gu);
// rotate the image if it fits the page better
if (_coreConfig.OutputPrintAllowRotate)
{
if (pageRect.Width > pageRect.Height && imageRect.Width < imageRect.Height || pageRect.Width < pageRect.Height && imageRect.Width > imageRect.Height)
{
bitmap.RotateFlip(RotateFlipType.Rotate270FlipNone);
imageRect = bitmap.GetBounds(ref gu);
if (alignment.Equals(ContentAlignment.TopLeft))
{
alignment = ContentAlignment.TopRight;
}
}
}
NativeSizeFloat size = imageRect.Size;
var printRect = new NativeRect(0, 0, size.Round());
// scale the image to fit the page better
if (_coreConfig.OutputPrintAllowEnlarge || _coreConfig.OutputPrintAllowShrink)
{
var resizedRect = ScaleHelper.GetScaledSize(imageRect.Size, pageRect.Size, false);
if (_coreConfig.OutputPrintAllowShrink && resizedRect.Width < printRect.Width || _coreConfig.OutputPrintAllowEnlarge && resizedRect.Width > printRect.Width)
{
printRect = printRect.Resize(resizedRect.Round());
}
}
// align the image
printRect = ScaleHelper.GetAlignedRectangle(printRect, new NativeRect(0, 0, new NativeSizeFloat(pageRect.Width, pageRect.Height).Round()), alignment).Round();
if (_coreConfig.OutputPrintFooter)
{
//printRect = new NativeRect(0, 0, printRect.Width, printRect.Height - (dateStringHeight * 2));
using (var f = new Font(FontFamily.GenericSansSerif, 10, FontStyle.Regular))
{
e.Graphics.DrawString(footerString, f, Brushes.Black, pageRect.Width / 2 - footerStringWidth / 2, pageRect.Height);
}
}
e.Graphics.DrawImage(bitmap, printRect, imageRect, GraphicsUnit.Pixel);
}
finally
{
if (disposeImage)
{
bitmap?.Dispose();
}
}
}