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Fix crash when splitting a S&T group. 

- Hold a ref to the old crossings till we cleaned up.
- Additionally use a safer method to delete constraints.
- Clean up.
This commit is contained in:
czeidler 2012-09-01 14:56:06 +12:00
parent 83092a04a4
commit 7dd16a4c95
2 changed files with 18 additions and 13 deletions
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27
src/servers/app/stackandtile/SATGroup.cpp
View File

@ -47,7 +47,6 @@ WindowArea::WindowArea(Crossing* leftTop, Crossing* rightTop,
fWidthConstraint(NULL),
fHeightConstraint(NULL)
{
}
@ -320,6 +319,12 @@ WindowArea::PropagateToGroup(SATGroup* group)
if (!newLeftTop || !newRightTop || !newLeftBottom || !newRightBottom)
return false;
// hold a ref to the crossings till we cleaned up everything
BReference<Crossing> oldLeftTop = fLeftTopCrossing;
BReference<Crossing> oldRightTop = fRightTopCrossing;
BReference<Crossing> oldLeftBottom = fLeftBottomCrossing;
BReference<Crossing> oldRightBottom = fRightBottomCrossing;
fLeftTopCrossing = newLeftTop;
fRightTopCrossing = newRightTop;
fLeftBottomCrossing = newLeftBottom;
@ -331,6 +336,7 @@ WindowArea::PropagateToGroup(SATGroup* group)
// manage constraints
if (Init(group) == false)
return false;
oldGroup->fWindowAreaList.RemoveItem(this);
for (int32 i = 0; i < fWindowList.CountItems(); i++) {
SATWindow* window = fWindowList.ItemAt(i);
@ -360,12 +366,15 @@ WindowArea::MoveToTopLayer(SATWindow* window)
void
WindowArea::_UninitConstraints()
{
delete fMinWidthConstraint;
delete fMinHeightConstraint;
delete fMaxWidthConstraint;
delete fMaxHeightConstraint;
delete fWidthConstraint;
delete fHeightConstraint;
LinearSpec* linearSpec = fGroup->GetLinearSpec();
linearSpec->RemoveConstraint(fMinWidthConstraint, true);
linearSpec->RemoveConstraint(fMinHeightConstraint, true);
linearSpec->RemoveConstraint(fMaxWidthConstraint, true);
linearSpec->RemoveConstraint(fMaxHeightConstraint, true);
linearSpec->RemoveConstraint(fWidthConstraint, true);
linearSpec->RemoveConstraint(fHeightConstraint, true);
fMinWidthConstraint = NULL;
fMinHeightConstraint = NULL;
fMaxWidthConstraint = NULL;
@ -1157,14 +1166,12 @@ SATGroup::_SplitGroupIfNecessary(WindowArea* removedArea)
while (_FindConnectedGroup(neighbourWindows, removedArea, newGroup)) {
STRACE_SAT("Connected group found; %i window(s)\n",
(int)newGroup.CountItems());
if (newGroup.CountItems() == 1
&& newGroup.ItemAt(0)->WindowList().CountItems() == 1) {
SATWindow* window = newGroup.ItemAt(0)->WindowList().ItemAt(0);
RemoveWindow(window);
_EnsureGroupIsOnScreen(window->GetGroup());
}
else if (ownGroupProcessed)
} else if (ownGroupProcessed)
_SpawnNewGroup(newGroup);
else {
_EnsureGroupIsOnScreen(this);

4
src/servers/app/stackandtile/SATGroup.h
View File

@ -220,11 +220,9 @@ private:
Constraint* fMinHeightConstraint;
Constraint* fMaxWidthConstraint;
Constraint* fMaxHeightConstraint;
Constraint* fKeepMaxWidthConstraint;
Constraint* fKeepMaxHeightConstraint;
Constraint* fWidthConstraint;
Constraint* fHeightConstraint;
MagneticBorder fMagneticBorder;
};