protected override void OnMouseMove(object o, Gtk.MotionNotifyEventArgs args, Cairo.PointD point)
{
Document doc = PintaCore.Workspace.ActiveDocument;
if (mouse_button == 1)
{
StrokeColor = PintaCore.Palette.PrimaryColor;
FillColor = PintaCore.Palette.SecondaryColor;
}
else if (mouse_button == 3)
{
StrokeColor = PintaCore.Palette.SecondaryColor;
FillColor = PintaCore.Palette.PrimaryColor;
}
else
{
LastPoint = point_empty;
return;
}
// TODO: also multiply by pressure
StrokeColor = new Color(StrokeColor.R, StrokeColor.G, StrokeColor.B,
StrokeColor.A * active_brush.StrokeAlphaMultiplier);
int x = (int)point.X;
int y = (int)point.Y;
if (LastPoint.Equals(point_empty))
{
LastPoint = new Point(x, y);
}
if (doc.Workspace.PointInCanvas(point))
{
surface_modified = true;
}
var surf = doc.CurrentUserLayer.Surface;
var invalidate_rect = Gdk.Rectangle.Zero;
var brush_width = BrushWidth;
Surface = surf;
using (Drawable = new Context(surf)) {
Drawable.AppendPath(doc.Selection.SelectionPath);
Drawable.FillRule = FillRule.EvenOdd;
Drawable.Clip();
Drawable.Antialias = UseAntialiasing ? Antialias.Subpixel : Antialias.None;
Drawable.LineWidth = brush_width;
Drawable.LineJoin = LineJoin.Round;
Drawable.LineCap = BrushWidth == 1 ? LineCap.Butt : LineCap.Round;
Drawable.Color = StrokeColor;
active_brush.Tool = this;
invalidate_rect = active_brush.DoMouseMove(x, y, LastPoint.X, LastPoint.Y);
active_brush.Tool = null;
}
Surface = null;
Drawable = null;
// If we draw partially offscreen, Cairo gives us a bogus
// dirty rectangle, so redraw everything.
if (doc.Workspace.IsPartiallyOffscreen(invalidate_rect))
{
doc.Workspace.Invalidate();
}
else
{
doc.Workspace.Invalidate(doc.ClampToImageSize(invalidate_rect));
}
LastPoint = new Point(x, y);
}