Fix #1883623 where the canvas size could shrink in one dimension when…

… pasting.

CHANGELOG.md

@@ -41,6 +41,7 @@ Thanks to the following contributors who worked on this release:
 - Cairo blend operations are now used instead of PDN's managed blend modes (#98, [#1248933](https://bugs.launchpad.net/pinta/+bug/1248933), [#1091910](https://bugs.launchpad.net/pinta/+bug/1091910)).
 
 ### Fixed
+- The option to expand the canvas when pasting an image now only changes the canvas size in the dimension where the pasted image is larger ([#1883623](https://bugs.launchpad.net/pinta/+bug/1883623)).
 - Fixed a bug where Auto Crop used the current layer instead of the entire image when deciding what to crop, and takes the selection into account ([#1434928](https://bugs.launchpad.net/pinta/+bug/1434928), [#1434906](https://bugs.launchpad.net/pinta/+bug/1434906)).
 - Fixed potential crashes when switching tools without any open documents ([#1425612](https://bugs.launchpad.net/pinta/+bug/1425612)).
 - Fixed a potential bug where the OK button in the New Image dialog could be incorrectly disabled ([#1430203](https://bugs.launchpad.net/pinta/+bug/1430203)).

Pinta.Core/Classes/Document.cs

@@ -828,9 +828,10 @@ public void Paste (bool toNewLayer, int x = 0, int y = 0)
 
  if (response == ResponseType.Accept)
  {
- PintaCore.Workspace.ResizeCanvas (cbImage.Width, cbImage.Height,
- Pinta.Core.Anchor.Center, paste_action);
- PintaCore.Actions.View.UpdateCanvasScale ();
+ var new_width = Math.Max(canvas_size.Width, cbImage.Width);
+ var new_height = Math.Max(canvas_size.Height, cbImage.Height);
+ PintaCore.Workspace.ResizeCanvas(new_width, new_height, Pinta.Core.Anchor.Center, paste_action);
+ PintaCore.Actions.View.UpdateCanvasScale ();
  }
  else if (response == ResponseType.Cancel || response == ResponseType.DeleteEvent)
  {