/// <summary>
/// Causes a complete redrawing of the graph. The cached graph bitmap will be marked as dirty and a repainting of the graph area is triggered with Gui render priority.
/// Note: it is save to call this function from non-Gui threads.
/// </summary>
private void StartCompleteRepaint()
{
var controller = Controller;
if (null == controller)
{
return;
}
// rendering in the background
Altaxo.Graph.Gdi.GraphDocumentRenderManager.Instance.AddTask(
controller,
controller.Doc,
(graphDocument, token) =>
{
if (graphDocument.IsDisposeInProgress)
{
return;
}
var size = _cachedGraphSize_Pixels;
if (size.Width > 1 && size.Height > 1)
{
if (!_gdiWpfBitmapManager.TryTake(size, out var bmp))
{
Current.Dispatcher.InvokeIfRequired((Action)(() => bmp = new GdiToWpfBitmap(size.Width, size.Height)));
}
var grfx = GetGraphicsContextFromWpfGdiBitmap(bmp);
controller.ScaleForPaintingGraphDocument(grfx);
var cachedGraphImage = new CachedGraphImage {
ZoomFactor = controller.ZoomFactor, ViewPortsUpperLeftCornerInGraphCoordinates = controller.PositionOfViewportsUpperLeftCornerInGraphCoordinates, Size = _cachedGraphSize_96thInch, BitmapSize_Pixel = size
};
if (!graphDocument.IsDisposeInProgress)
{
graphDocument.Paint(grfx, false);
}
Current.Dispatcher.InvokeIfRequired(() =>
{
var bmpSource = bmp.WpfBitmapSource;
cachedGraphImage.CachedGraphImageSource = bmpSource;
_cachedGraphImage = cachedGraphImage;
_graphImage.Source = bmpSource;
_isGraphUpToDate = true;
grfx.Dispose();
var overlay = GetImageSourceByRenderingOverlay(controller, bmp, cachedGraphImage);
_graphOverlay.Source = overlay;
cachedGraphImage.CachedOverlayImageSource = overlay;
_gdiWpfBitmapManager.Add(bmp.GdiSize, bmp);
ShowCachedGraphImage();
});
}
}
);
}
/// <summary>
/// Renders the overlay (the drawing that designates selected rectangles, handles and so on) immediately in the current thread.
/// Attention: if there is no cached bitmap, a new bitmap is created, but this must be done in the Gui context, so this can lead to deadlocks.
/// </summary>
private static ImageSource GetImageSourceByRenderingOverlay(GraphControllerWpf controller, GdiToWpfBitmap bmp, CachedGraphImage cachedGraphImage)
{
if (controller.IsOverlayPaintingRequired)
{
using (var grfx = GetGraphicsContextFromWpfGdiBitmap(bmp))
{
controller.DoPaintOverlay(grfx, cachedGraphImage.ZoomFactor, cachedGraphImage.ViewPortsUpperLeftCornerInGraphCoordinates);
return bmp.WpfBitmapSource;
}
}
else
{
return null;
}
}
/// <summary>
/// Causes a complete redrawing of the graph. The cached graph bitmap will be marked as dirty and a repainting of the graph area is triggered with Gui render priority.
/// Note: it is save to call this function from non-Gui threads.
/// </summary>
private void StartCompleteRepaint()
{
var controller = Controller;
if (null == controller)
return;
// rendering in the background
Altaxo.Graph.Gdi.GraphDocumentRenderManager.Instance.AddTask(
controller,
controller.Doc,
(graphDocument, token) =>
{
if (graphDocument.IsDisposeInProgress)
return;
var size = _cachedGraphSize_Pixels;
if (size.Width > 1 && size.Height > 1)
{
GdiToWpfBitmap bmp;
if (!_gdiWpfBitmapManager.TryTake(size, out bmp))
Current.Gui.Execute(() => bmp = new GdiToWpfBitmap(size.Width, size.Height));
var grfx = GetGraphicsContextFromWpfGdiBitmap(bmp);
controller.ScaleForPaintingGraphDocument(grfx);
var cachedGraphImage = new CachedGraphImage { ZoomFactor = controller.ZoomFactor, ViewPortsUpperLeftCornerInGraphCoordinates = controller.PositionOfViewportsUpperLeftCornerInGraphCoordinates, Size = _cachedGraphSize_96thInch, BitmapSize_Pixel = size };
if (!graphDocument.IsDisposeInProgress)
graphDocument.Paint(grfx, false);
Current.Gui.Execute(() =>
{
var bmpSource = bmp.WpfBitmapSource;
cachedGraphImage.CachedGraphImageSource = bmpSource;
_cachedGraphImage = cachedGraphImage;
_graphImage.Source = bmpSource;
_isGraphUpToDate = true;
grfx.Dispose();
var overlay = GetImageSourceByRenderingOverlay(controller, bmp, cachedGraphImage);
_graphOverlay.Source = overlay;
cachedGraphImage.CachedOverlayImageSource = overlay;
_gdiWpfBitmapManager.Add(bmp.GdiSize, bmp);
ShowCachedGraphImage();
});
}
}
);
}
/// <summary>
/// Renders the overlay (the drawing that designates selected rectangles, handles and so on) immediately in the current thread.
/// Attention: if there is no cached bitmap, a new bitmap is created, but this must be done in the Gui context, so this can lead to deadlocks.
/// </summary>
private static ImageSource GetImageSourceByRenderingOverlay(GraphController controller, GdiToWpfBitmap bmp, CachedGraphImage cachedGraphImage)
{
if (controller.IsOverlayPaintingRequired)
{
using (var grfx = GetGraphicsContextFromWpfGdiBitmap(bmp))
{
controller.DoPaintOverlay(grfx, cachedGraphImage.ZoomFactor, cachedGraphImage.ViewPortsUpperLeftCornerInGraphCoordinates);
return(bmp.WpfBitmapSource);
}
}
else
{
return(null);
}
}