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 = doc.Selection.Clone();
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;
//Use same BlendMode, Opacity and Visibility for SelectionLayer
doc.SelectionLayer.BlendMode = doc.CurrentUserLayer.BlendMode;
doc.SelectionLayer.Opacity = doc.CurrentUserLayer.Opacity;
doc.SelectionLayer.Hidden = doc.CurrentUserLayer.Hidden;
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;
if (is_alt_pressed)
{
g.Operator = Cairo.Operator.Clear;
}
else
{
g.Operator = Operator.Source;
g.SetSourceColor(PintaCore.Palette.SecondaryColor);
}
g.Fill();
}
}
PintaCore.Workspace.Invalidate();
}
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 OnFinishTransform()
{
base.OnFinishTransform();
if (hist != null)
{
PintaCore.History.PushNewItem(hist);
}
hist = null;
original_selection = null;
original_transform.InitIdentity();
}
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(
doc.SelectionLayer.Surface, 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 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.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.SelectionPath);
g.FillRule = FillRule.EvenOdd;
g.Operator = Cairo.Operator.Clear;
g.Fill();
}
}
canvas.GdkWindow.Invalidate();
}
protected override void OnFinishTransform(Matrix transform)
{
base.OnFinishTransform(transform);
// Also transform the base selection used for the various select modes.
var doc = PintaCore.Workspace.ActiveDocument;
using (var prev_selection = doc.PreviousSelection)
doc.PreviousSelection = prev_selection.Transform(transform);
if (hist != null)
{
PintaCore.History.PushNewItem(hist);
}
hist = null;
original_selection.Dispose();
original_selection = null;
original_transform.InitIdentity();
}
