protected override void OnMouseDown(Gtk.DrawingArea canvas, Gtk.ButtonPressEventArgs args, Cairo.PointD point)
{
origin_offset = point;
is_dragging = true;
hist = new MovePixelsHistoryItem (Icon, Name);
hist.TakeSnapshot ();
if (!PintaCore.Layers.ShowSelectionLayer) {
// Copy the selection to the temp layer
PintaCore.Layers.CreateSelectionLayer ();
PintaCore.Layers.ShowSelectionLayer = true;
using (Cairo.Context g = new Cairo.Context (PintaCore.Layers.SelectionLayer.Surface)) {
g.AppendPath (PintaCore.Layers.SelectionPath);
g.FillRule = FillRule.EvenOdd;
g.SetSource (PintaCore.Layers.CurrentLayer.Surface);
g.Clip ();
g.Paint ();
}
Cairo.ImageSurface surf = PintaCore.Layers.CurrentLayer.Surface;
using (Cairo.Context g = new Cairo.Context (surf)) {
g.AppendPath (PintaCore.Layers.SelectionPath);
g.FillRule = FillRule.EvenOdd;
g.Operator = Cairo.Operator.Clear;
g.Fill ();
}
}
canvas.GdkWindow.Invalidate ();
}
protected override void OnStartTransform ()
{
base.OnStartTransform ();
Document doc = PintaCore.Workspace.ActiveDocument;
// If there is no selection, select the whole image.
if (doc.Selection.SelectionPolygons.Count == 0) {
doc.Selection.CreateRectangleSelection (
new Cairo.Rectangle (0, 0, doc.ImageSize.Width, doc.ImageSize.Height));
}
original_selection = new List<List<IntPoint>> (doc.Selection.SelectionPolygons);
original_transform.InitMatrix (doc.SelectionLayer.Transform);
hist = new MovePixelsHistoryItem (Icon, Name, doc);
hist.TakeSnapshot (!doc.ShowSelectionLayer);
if (!doc.ShowSelectionLayer) {
// Copy the selection to the temp layer
doc.CreateSelectionLayer ();
doc.ShowSelectionLayer = true;
using (Cairo.Context g = new Cairo.Context (doc.SelectionLayer.Surface)) {
g.AppendPath (doc.Selection.SelectionPath);
g.FillRule = FillRule.EvenOdd;
g.SetSource (doc.CurrentUserLayer.Surface);
g.Clip ();
g.Paint ();
}
Cairo.ImageSurface surf = doc.CurrentUserLayer.Surface;
using (Cairo.Context g = new Cairo.Context (surf)) {
g.AppendPath (doc.Selection.SelectionPath);
g.FillRule = FillRule.EvenOdd;
g.Operator = Cairo.Operator.Clear;
g.Fill ();
}
}
PintaCore.Workspace.Invalidate ();
}
protected override void OnFinishTransform()
{
base.OnFinishTransform ();
if (hist != null)
PintaCore.History.PushNewItem (hist);
hist = null;
original_selection = null;
original_transform.InitIdentity ();
}
protected override void OnMouseUp(Gtk.DrawingArea canvas, Gtk.ButtonReleaseEventArgs args, Cairo.PointD point)
{
is_dragging = false;
if (hist != null)
PintaCore.History.PushNewItem (hist);
hist = null;
}
protected override void OnMouseDown(Gtk.DrawingArea canvas, Gtk.ButtonPressEventArgs args, Cairo.PointD point)
{
// If we are already drawing, ignore any additional mouse down events
if (is_dragging)
return;
Document doc = PintaCore.Workspace.ActiveDocument;
origin_offset = point;
is_dragging = true;
hist = new MovePixelsHistoryItem (Icon, Name, doc);
hist.TakeSnapshot (!doc.ShowSelectionLayer);
if (!doc.ShowSelectionLayer) {
// Copy the selection to the temp layer
doc.CreateSelectionLayer ();
doc.ShowSelectionLayer = true;
using (Cairo.Context g = new Cairo.Context (doc.SelectionLayer.Surface)) {
g.AppendPath (doc.Selection.SelectionPath);
g.FillRule = FillRule.EvenOdd;
g.SetSource (doc.CurrentLayer.Surface);
g.Clip ();
g.Paint ();
}
Cairo.ImageSurface surf = doc.CurrentLayer.Surface;
using (Cairo.Context g = new Cairo.Context (surf)) {
g.AppendPath (doc.Selection.SelectionPath);
g.FillRule = FillRule.EvenOdd;
g.Operator = Cairo.Operator.Clear;
g.Fill ();
}
}
canvas.GdkWindow.Invalidate ();
}
