public static IEnumerable<Rectangle> ComputeView(this Page page, IPageViewer viewer)
{
viewer.ViewTransformation = Page.ReadingDirectionToMatrix(page.Direction);
IEnumerable<Rectangle> view = viewer.ComputeView(page.TransformedCells);
Matrix invert = Page.ReadingDirectionToInverseMatrix(page.Direction);
return (from rectangle in view select rectangle.Transform(invert));
}
private void NotifyPropertyChanged([CallerMemberName] string propertyName = "")
{
_viewer = null;
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
private IPageViewer getViewer()
{
if (_viewer == null) {
switch (_viewMode)
{
case MangaConfiguration.ViewModeKind.Strip:
_viewer = new StripPageViewer(_width, _height);
break;
case MangaConfiguration.ViewModeKind.Cell:
_viewer = new CellsPageViewer(_width, _height);
break;
case MangaConfiguration.ViewModeKind.Free:
_viewer = new FullPageViewer();
break;
default:
_viewer = null;
break;
}
if (_viewer != null) _viewer.ViewTransformation = _viewTransformation;
}
return _viewer;
}
private Bitmap drawPageView(Bitmap input, IPageViewer viewer)
{
return MakeBitmap(input.Width, input.Height, (Graphics g) =>
{
Page page = getPage(input);
using (Pen p = new Pen(Color.Red, 3)) {
g.DrawImageUnscaled(input, 0, 0);
System.Drawing.Point? lastPoint = null;
foreach (var rectangle in page.ComputeView(viewer))
{
g.DrawRectangle(p, rectangle);
var newPoint = rectangleCenter(rectangle);
if (lastPoint != null)
{
drawArrow(g, Color.DarkGreen, lastPoint.Value, newPoint);
}
lastPoint = newPoint;
}
}
});
}
