private bool PushRenderStates()
{
var clipped = !_activeGroup.Bound.IsEmpty;
// Push clipping rect
if (clipped)
{
var clipTransform = new Transform(_activeGroup.Transform);
// Push clipping transform
{
var transform = new System.Windows.Media.MatrixTransform(clipTransform.XX, clipTransform.XY,
clipTransform.YX, clipTransform.YY,
clipTransform.TX, clipTransform.TY);
_drawingContext.PushTransform(transform);
}
// Push clipping rect
{
var geometry = new System.Windows.Media.RectangleGeometry(_activeGroup.Bound);
_drawingContext.PushClip(geometry);
}
// Push inverse clipping transform
{
clipTransform.Invert();
var transform = new System.Windows.Media.MatrixTransform(clipTransform.XX, clipTransform.XY,
clipTransform.YX, clipTransform.YY,
clipTransform.TX, clipTransform.TY);
_drawingContext.PushTransform(transform);
}
}
// Push current transform
{
var transform = new System.Windows.Media.MatrixTransform(_transform.XX, _transform.XY,
_transform.YX, _transform.YY,
_transform.TX, _transform.TY);
_drawingContext.PushTransform(transform);
}
return(clipped);
}
public void StartGroup(string id, float x, float y, float width, float height, bool clipContent)
{
if (clipContent)
{
// Save previous
_groups.Add(id, _activeGroup);
// Apply transform to clipping rect
var rect = new Rect(x, y, width, height);
var transform = new System.Windows.Media.Matrix(_transform.XX, _transform.XY,
_transform.YX, _transform.YY,
_transform.TX, _transform.TY);
rect = Rect.Transform(rect, transform);
// Push clipping rect
_activeGroup = new Group(rect, _transform);
var geometry = new System.Windows.Media.RectangleGeometry(_activeGroup.Bound);
_drawingContext.PushClip(geometry);
}
}
public override DocumentPage GetPage(int pageNumber)
{
// This is called starting at zero, but we are really starting at the given page.
pageNumber += startingPage;
if (showProgressDialog)
{
if (outer.controller.UpdateProgressDialog(string.Format(MiscText.PrintingPage, pageNumber + 1, outer.totalPages), (double)pageNumber / (double)outer.totalPages))
{
throw new Exception(MiscText.CancelledByUser);
}
}
Margins margins = new Margins(this.margins.Left, this.margins.Right, this.margins.Top, this.margins.Bottom);
bool landscape = outer.pageSettings.Landscape;
PaperSize paperSize = outer.pageSettings.PaperSize;
bool rotate;
outer.ChangePageSettings(pageNumber, ref landscape, ref paperSize, margins);
rotate = (landscape != outer.pageSettings.Landscape);
this.pageSize = new System.Windows.Size(HundrethsToPoints(paperSize.Width), HundrethsToPoints(paperSize.Height));
if (outer.pageSettings.Landscape)
{
this.pageSize = new System.Windows.Size(this.pageSize.Height, this.pageSize.Width);
}
// Get margins in terms of normal page orientation, in points.
double leftMargin = HundrethsToPoints(rotate ? margins.Bottom : margins.Left);
double rightMargin = HundrethsToPoints(rotate ? margins.Top : margins.Right);
double topMargin = HundrethsToPoints(rotate ? margins.Left : margins.Top);
double bottomMargin = HundrethsToPoints(rotate ? margins.Right : margins.Bottom);
System.Windows.Rect contentRect = new System.Windows.Rect(leftMargin, topMargin, pageSize.Width - leftMargin - rightMargin, pageSize.Height - topMargin - bottomMargin);
System.Windows.Rect boundingRect = new System.Windows.Rect(0, 0, pageSize.Width - leftMargin - rightMargin, pageSize.Height - topMargin - bottomMargin);
System.Windows.Media.DrawingVisual visual = new System.Windows.Media.DrawingVisual();
using (System.Windows.Media.DrawingContext dc = visual.RenderOpen()) {
if (outer.printingToBitmaps)
{
// This is kind of hacky way to get the printing to bitmaps white, but much easier than the alternative.
dc.DrawRectangle(System.Windows.Media.Brushes.White, null, new System.Windows.Rect(-1, -1, pageSize.Width + 2, pageSize.Height + 2));
}
// Clip to the bounding rect within margins.
dc.PushClip(new System.Windows.Media.RectangleGeometry(boundingRect));
if (rotate)
{
// Rotate and translate to handle landscape mode.
dc.PushTransform(new System.Windows.Media.TranslateTransform(0, boundingRect.Height));
dc.PushTransform(new System.Windows.Media.RotateTransform(-90));
}
// Scale to hundreths of an inch instead of points (1/96 of inch).
dc.PushTransform(new System.Windows.Media.ScaleTransform(96.0 / 100.0, 96.0 / 100.0));
IGraphicsTarget graphicsTarget;
if (outer.colorModel == ColorModel.RGB)
{
graphicsTarget = new WPF_GraphicsTarget(dc);
}
else if (outer.colorModel == ColorModel.CMYK)
{
graphicsTarget = new WPF_GraphicsTarget(dc, new WPFSwopColorConverter());
}
else
{
throw new NotImplementedException();
}
using (graphicsTarget) {
outer.DrawPage(graphicsTarget, pageNumber, new SizeF((float)contentRect.Width, (float)contentRect.Height), dpi);
}
graphicsTarget = null;
}
return(new DocumentPage(visual, pageSize, contentRect, contentRect));
}