Marcel Taeumel has made a lot of improvements to Morphic Squeak. This looks like an interesting one for us. I tried it in 50292 (making the changes in the right order) haven't found a problem yet. Stephan Marcel Taeumel uploaded a new version of Morphic to project The Trunk: http://source.squeak.org/trunk/Morphic-mt.900.mcz ==================== Summary ==================== Name: Morphic-mt.900 Author: mt Time: 19 April 2015, 11:27:22.653 am UUID: 950b4378-f3fe-db4c-b054-88b646a1feb0 Ancestors: Morphic-mt.899 Fix to avoid unnecessary layout computation for proportional layout. Note: Please report any visual glitches. Not 100% sure about the extent of this change... =============== Diff against Morphic-mt.899 =============== Item was changed: ----- Method: Morph>>layoutProportionallyIn: (in category 'layout') ----- layoutProportionallyIn: newBounds "Layout specific. Apply the given bounds to the receiver." | box frame | frame := self layoutFrame ifNil:[^self]. - "before applying the proportional values make sure the receiver's layout is computed" - self fullBounds. "sigh..." "compute the cell size the receiver has given its layout frame" box := frame layout: self bounds in: newBounds. (box = self bounds) ifTrue:[^self]. "no change" ^self layoutInBounds: box.! Item was added: + ----- Method: PluggableTextMorph>>isAutoFit (in category 'accessing') ----- + isAutoFit + + ^ textMorph isAutoFit! Item was added: + ----- Method: ScrollPane>>isAutoFit (in category 'access') ----- + isAutoFit + "Does this scroll pane modifies the extent of its scrollable content when it resizes itself to avoid, for example, a horizontal or vertical scrollbar?" + + ^ false! Item was added: + ----- Method: ScrollPane>>layoutProportionallyIn: (in category 'layout') ----- + layoutProportionallyIn: newBounds + + self layoutFrame ifNil:[^self]. + self isAutoFit ifTrue: [self fullBounds]. + ^ super layoutProportionallyIn: newBounds.!