private static Bitmap DrawToIcon(IPresentationImage image, int width, int height)
{
//We just hide the text overlay and application graphics because it creates ugly icons.
var textOverlayHider = new TextOverlayVisibilityHelper(image);
var applicationGraphicsHider = GraphicsVisibilityHelper.CreateForApplicationGraphics(image);
textOverlayHider.Hide();
applicationGraphicsHider.HideAll();
try
{
return(image.DrawToBitmap(width, height));
}
catch (Exception ex)
{
// rendering the error text to a 100x100 icon is useless, so we'll just paint a placeholder error icon and log the icon error
Platform.Log(LogLevel.Warn, ex, "Failed to render icon with dimensions {0}x{1}", width, height);
var bitmap = new Bitmap(width, height);
using (var graphics = System.Drawing.Graphics.FromImage(bitmap))
{
graphics.FillRectangle(Brushes.Black, 0, 0, width, height);
graphics.DrawLine(Pens.WhiteSmoke, 0, 0, width, height);
graphics.DrawLine(Pens.WhiteSmoke, 0, height, width, 0);
}
return(bitmap);
}
finally
{
textOverlayHider.Restore();
applicationGraphicsHider.RestoreAll();
}
}
public void TestRestoreVisible()
{
var layout = CreateLayout(true);
var helper = new TextOverlayVisibilityHelper(layout);
Assert.IsTrue(layout.Visible);
helper.Hide();
Assert.IsFalse(layout.Visible);
helper.Restore();
Assert.IsTrue(layout.Visible);
}
public void TestRestoreVisible()
{
var layout = CreateLayout(true);
var helper = new TextOverlayVisibilityHelper(layout);
Assert.IsTrue(layout.Visible);
helper.Hide();
Assert.IsFalse(layout.Visible);
helper.Restore();
Assert.IsTrue(layout.Visible);
}
public static Bitmap CreateThumbnail(IPresentationImage image, int width, int height)
{
var visibilityHelper = new TextOverlayVisibilityHelper(image);
visibilityHelper.Hide();
var bitmap = CreateThumbnailImage(image, width, height);
using (System.Drawing.Graphics graphics = System.Drawing.Graphics.FromImage(bitmap))
DrawBorder(graphics, width, height);
visibilityHelper.Restore();
return(bitmap);
}