public static ImageSource GetImage(LineCapExtension join, bool isForEndCap)
{
const int bmpHeight = 24;
const int bmpWidth = 48;
const double lineWidth = bmpHeight * 0.4;
if (null == _interopBitmap)
{
_interopBitmap = new GdiToWpfBitmap(bmpWidth, bmpHeight);
}
using (var grfx = _interopBitmap.BeginGdiPainting())
{
grfx.CompositingMode = sdd.CompositingMode.SourceCopy;
grfx.FillRectangle(System.Drawing.Brushes.Transparent, 0, 0, bmpWidth, bmpHeight);
var linePen = new System.Drawing.Pen(System.Drawing.Brushes.Black, (float)Math.Ceiling(lineWidth));
if (isForEndCap)
{
join.SetEndCap(linePen);
grfx.DrawLine(linePen, 0, 0.5f * bmpHeight, bmpWidth * (1 - 0.25f), 0.5f * bmpHeight);
}
else
{
join.SetStartCap(linePen);
grfx.DrawLine(linePen, 0.25f * bmpWidth, 0.5f * bmpHeight, bmpWidth, 0.5f * bmpHeight);
}
_interopBitmap.EndGdiPainting();
}
var img = new WriteableBitmap(_interopBitmap.WpfBitmap);
img.Freeze();
return(img);
}
/// <summary>
/// Called by the PresentationGraphController to get a new graphics context for painting.
/// </summary>
/// <returns></returns>
public static System.Drawing.Graphics GetGraphicsContextFromWpfGdiBitmap(GdiToWpfBitmap gdiWpfBitmap)
{
var grfx = gdiWpfBitmap.BeginGdiPainting();
grfx.ResetTransform();
grfx.PageScale = 1;
grfx.PageUnit = System.Drawing.GraphicsUnit.Pixel;
return(grfx);
}
public void InvalidatePreviewPanel()
{
if (_controller != null)
{
using (var grfx = _previewBitmap.BeginGdiPainting())
{
_controller.EhView_PreviewPanelPaint(grfx);
_previewBitmap.EndGdiPainting();
}
}
}
public void UpdatePreview(BrushX brush)
{
if (null == _previewPanel || null == brush)
{
return;
}
int height = (int)_previewPanel.ActualHeight;
int width = (int)_previewPanel.ActualWidth;
if (height <= 0)
{
height = 64;
}
if (width <= 0)
{
width = 64;
}
if (null == _previewBitmap)
{
_previewBitmap = new GdiToWpfBitmap(width, height);
_previewPanel.Source = _previewBitmap.WpfBitmap;
}
if (width != _previewBitmap.GdiRectangle.Width || height != _previewBitmap.GdiRectangle.Height)
{
_previewBitmap.Resize(width, height);
_previewPanel.Source = _previewBitmap.WpfBitmap;
}
using (var grfx = _previewBitmap.BeginGdiPainting())
{
var fullRect = _previewBitmap.GdiRectangle;
grfx.CompositingMode = System.Drawing.Drawing2D.CompositingMode.SourceCopy;
grfx.FillRectangle(System.Drawing.Brushes.Transparent, fullRect);
grfx.CompositingMode = System.Drawing.Drawing2D.CompositingMode.SourceOver;
var r2 = fullRect;
r2.Inflate(-r2.Width / 4, -r2.Height / 4);
//grfx.FillRectangle(System.Drawing.Brushes.Black, r2);
brush.SetEnvironment(fullRect, BrushX.GetEffectiveMaximumResolution(grfx));
grfx.FillRectangle(brush, fullRect);
_previewBitmap.EndGdiPainting();
}
}
private void UpdatePreview()
{
if (null == _previewBitmap || null == _previewData || _previewData.Length == 0)
{
return;
}
// original sizes
double ow = _previewData[0].PhysicalSize.Width;
double oh = _previewData[0].PhysicalSize.Height;
// destination sizes and locations
double dl = Math.Min(4, _previewBitmap.GdiRectangle.Width / 8.0); // left
double dt = Math.Min(4, _previewBitmap.GdiRectangle.Height / 8.0); // top
double dw = _previewBitmap.GdiRectangle.Width - 2 * dl; // width
double dh = _previewBitmap.GdiRectangle.Height - 2 * dt; // height
System.Drawing.Rectangle destRect;
if (oh / ow > dh / dw) // if the original image is more portrait than the destination rectangle
{
// use the full height, but restrict the destination with
var rw = dh * ow / oh;
destRect = new System.Drawing.Rectangle((int)(0.5 * (dw - rw) + dl), (int)dt, (int)rw, (int)dh);
}
else // if the original image is more landscape than the destination rectangle
{
var rh = dw * oh / ow;
destRect = new System.Drawing.Rectangle((int)dl, (int)(0.5 * (dh - rh) + dt), (int)dw, (int)rh);
}
using (var grfx = _previewBitmap.BeginGdiPainting())
{
grfx.FillRectangle(System.Drawing.Brushes.White, _previewBitmap.GdiRectangle);
grfx.DrawRectangle(System.Drawing.Pens.Black, destRect);
_previewPageNumber = Math.Max(0, Math.Min(_previewPageNumber, _previewData.Length - 1));
grfx.DrawImage(_previewData[_previewPageNumber].Image, destRect);
_previewBitmap.EndGdiPainting();
}
}
private void UpdatePreviewPanel()
{
if (null == _previewPanel || null == _pen)
{
return;
}
int height = (int)_previewPanel.ActualHeight;
int width = (int)_previewPanel.ActualWidth;
if (height <= 0)
{
height = 64;
}
if (width <= 0)
{
width = 64;
}
if (null == _previewBitmap)
{
_previewBitmap = new GdiToWpfBitmap(width, height);
_previewPanel.Source = _previewBitmap.WpfBitmap;
}
if (width != _previewBitmap.GdiRectangle.Width || height != _previewBitmap.GdiRectangle.Height)
{
_previewBitmap.Resize(width, height);
_previewPanel.Source = _previewBitmap.WpfBitmap;
}
using (var grfx = _previewBitmap.BeginGdiPainting())
{
var fullRect = _previewBitmap.GdiRectangle;
grfx.FillRectangle(System.Drawing.Brushes.White, fullRect);
_pen.BrushHolder.SetEnvironment(fullRect, BrushX.GetEffectiveMaximumResolution(grfx));
grfx.DrawLine(_pen, fullRect.Width / 6, fullRect.Height / 2, (fullRect.Width * 5) / 6, fullRect.Height / 2);
_previewBitmap.EndGdiPainting();
}
}
/// <summary>
/// Called by the PresentationGraphController to get a new graphics context for painting.
/// </summary>
/// <returns></returns>
public static System.Drawing.Graphics GetGraphicsContextFromWpfGdiBitmap(GdiToWpfBitmap gdiWpfBitmap)
{
var grfx = gdiWpfBitmap.BeginGdiPainting();
grfx.ResetTransform();
grfx.PageScale = 1;
grfx.PageUnit = System.Drawing.GraphicsUnit.Pixel;
return grfx;
}