private void RenderGradient(Surface surface, PdnRegion clipRegion, CompositingMode compositingMode,
PointF startPointF, ColorBgra startColor, PointF endPointF, ColorBgra endColor)
{
GradientRenderer gr = AppEnvironment.GradientInfo.CreateGradientRenderer();
gr.StartColor = startColor;
gr.EndColor = endColor;
gr.StartPoint = startPointF;
gr.EndPoint = endPointF;
gr.AlphaBlending = (compositingMode == CompositingMode.SourceOver);
gr.BeforeRender();
Rectangle[] oldRois = clipRegion.GetRegionScansReadOnlyInt();
Rectangle[] newRois;
if (oldRois.Length == 1)
{
newRois = new Rectangle[Processor.LogicalCpuCount];
Utility.SplitRectangle(oldRois[0], newRois);
}
else
{
newRois = oldRois;
}
RenderContext rc = new RenderContext();
rc.surface = surface;
rc.rois = newRois;
rc.renderer = gr;
WaitCallback wc = new WaitCallback(rc.Render);
for (int i = 0; i < Processor.LogicalCpuCount; ++i)
{
if (i == Processor.LogicalCpuCount - 1)
{
wc(BoxedConstants.GetInt32(i));
}
else
{
PaintDotNet.Threading.ThreadPool.Global.QueueUserWorkItem(wc, BoxedConstants.GetInt32(i));
}
}
PaintDotNet.Threading.ThreadPool.Global.Drain();
}
protected override void OnMouseMove(object o, Gtk.MotionNotifyEventArgs args, Cairo.PointD point)
{
Document doc = PintaCore.Workspace.ActiveDocument;
if (tracking)
{
GradientRenderer gr = CreateGradientRenderer();
if (button == 3) // Right-click
{
gr.StartColor = PintaCore.Palette.SecondaryColor.ToColorBgra();
gr.EndColor = PintaCore.Palette.PrimaryColor.ToColorBgra();
}
else //1 Left-click
{
gr.StartColor = PintaCore.Palette.PrimaryColor.ToColorBgra();
gr.EndColor = PintaCore.Palette.SecondaryColor.ToColorBgra();
}
gr.StartPoint = startpoint;
gr.EndPoint = point;
gr.AlphaBlending = UseAlphaBlending;
gr.BeforeRender();
Gdk.Rectangle selection_bounds = doc.GetSelectedBounds(true);
ImageSurface scratch_layer = doc.ToolLayer.Surface;
gr.Render(scratch_layer, new Gdk.Rectangle[] { selection_bounds });
using (var g = doc.CreateClippedContext()) {
g.SetSource(scratch_layer);
g.Paint();
}
doc.ToolLayer.Clear();
selection_bounds.Inflate(5, 5);
doc.Workspace.Invalidate(selection_bounds);
}
}