public BitmapLayer(int width, int height, ColorBgra fillColor)
: base(width, height)
{
this.surface = new Surface(width, height);
// clear to see-through white, 0x00ffffff
this.Surface.Clear(fillColor);
this.properties = new BitmapLayerProperties(UserBlendOps.CreateDefaultBlendOp());
}
private void CompileBlendOp()
{
bool isDefaultOp = (properties.blendOp.GetType() == UserBlendOps.GetDefaultBlendOp());
if (this.Opacity == 255)
{
this.compiledBlendOp = properties.blendOp;
}
else
{
this.compiledBlendOp = properties.blendOp.CreateWithOpacity(this.Opacity);
}
}
/// <summary>
/// Creates a new BitmapLayer of the same size as the given Surface, and either
/// copies the pixels of the given Surface or takes ownership of it.
/// </summary>
/// <param name="surface">The Surface.</param>
/// <param name="takeOwnership">
/// true to take ownership of the surface (make sure to Dispose() it yourself), or
/// false to copy its pixels
/// </param>
public BitmapLayer(Surface surface, bool takeOwnership)
: base(surface.Width, surface.Height)
{
if (takeOwnership)
{
this.surface = surface;
}
else
{
this.surface = surface.Clone();
}
this.properties = new BitmapLayerProperties(UserBlendOps.CreateDefaultBlendOp());
}
public BitmapLayerPropertiesDialog()
{
// This call is required by the Windows Form Designer.
InitializeComponent();
this.blendingHeader.Text = PdnResources.GetString("BitmapLayerPropertiesDialog.BlendingHeader.Text");
this.blendModeLabel.Text = PdnResources.GetString("BitmapLayerPropertiesDialog.BlendModeLabel.Text");
this.opacityLabel.Text = PdnResources.GetString("BitmapLayerPropertiesDialog.OpacityLabel.Text");
// populate the blendOpComboBox with all the blend modes they're allowed to use
foreach (Type type in UserBlendOps.GetBlendOps())
{
blendOpComboBox.Items.Add(UserBlendOps.CreateBlendOp(type));
}
}
public void Render(RenderArgs args, Rectangle[] roi, int startIndex, int length, bool clearBackground)
{
int startLayerIndex;
if (clearBackground)
{
BitmapLayer layer0;
layer0 = this.layers[0] as BitmapLayer;
// Special case: if the first layer is a visible BitmapLayer with full opacity using
// the default blend op, we can just copy the pixels straight over
if (layer0 != null &&
layer0.Visible &&
layer0.Opacity == 255 &&
layer0.BlendOp.GetType() == UserBlendOps.GetDefaultBlendOp())
{
args.Surface.CopySurface(layer0.Surface, roi, startIndex, length);
startLayerIndex = 1;
}
else
{
ClearBackground(args.Surface, roi, startIndex, length);
startLayerIndex = 0;
}
}
else
{
startLayerIndex = 0;
}
for (int i = startLayerIndex; i < this.layers.Count; ++i)
{
Layer layer = (Layer)this.layers[i];
if (layer.Visible)
{
layer.RenderUnchecked(args, roi, startIndex, length);
}
}
}
