BCardLayout: make the first item visible.

Change-Id: I7b836a22bc5c281bec9b44859c42fec56af45574
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2683
Reviewed-by: Andrew Lindesay <apl@lindesay.co.nz>

BCardLayout: Do not recompute size limits on visible item switch.

The size limits are already the minimum/maximum for all views,
not just the current one, so we do not need to recompute them
when the layout is invalidated due to an item switch.

Fixes #14675, and other performance issues on switching tabs
in layouted BTabViews, among other things.

Change-Id: I55bfe4ddb8c8a79c634634cfc27113205a790c42
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2677
Reviewed-by: Andrew Lindesay <apl@lindesay.co.nz>

HaikuBook: Add documentation for BCardLayout

This adds documentation for BCardView, BCardLayout and BLayoutBuilder::Cards.
There is also a bit of cleanup for the BSplitView documentation.

It also makes explicit when a developer passes an invalid argument to
BCardLayout::SetVisibleItem(), by making that a debugger() call.

Change-Id: I17ac52cc773bb76c4f81beaa76f72af62a9e10f4
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2460
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

More whitespace cleanup all over the place.

Add a bit more FBC stuff for the Layout API, which I missed before.

Override a bunch of methods in layout related classes for FBC stability.

* Especially made sure to override archiving methods, since these are called rarely, so the cost is very minimal
* Otherwise, the closer a class is to a base class, the more likely I was to give it all the overrides.

Add FBC padding to all (I think..) of the visible Layout related classes.

Add Perform() methods to all the layout-related classes that needed them.

Devirtualize BLayout::InvalidateLayout(), add a protected hook BLayout::DoLayout(). This will allow for much better control over the propagation of layout invalidations, and therefore cleaner, more optimal code.

Rename BLayout::DerivedLayoutItems() to DoLayout(), which is consistent with BView::DoLayout(). Also adjusted child classes and documentation.

Big change deriving BLayout from BLayoutItem, and allowing viewless BLayouts.
a few highlights:
* BLayout now derives publicly from BLayoutItem
* Added BAbstractLayout class, which our layouts now derive from
* updated layout builders to avoid creating views when they don't need to
* updated layout classes
* updated AboutSystem to fix a little regression
* more details on #6407
* please tell me about any regressions, I've tried to find them all, but some
may have slipped by.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38207 a95241bf-73f2-0310-859d-f6bbb57e9c96

Update BLayout::ItemAdded() and BLayout::ItemRemoved() to take an int32 index parameter, and ItemAdded() to return a bool indicating success or failure. Update BLayout::AddItem() to take the result of ItemAdded() into account. Also update BLayout::AllUnarchived() to take this into account. In either situation, if ItemAdded() returns false, the item does not get added to the layout. Removed various TODOs about code that could be removed once this change was made. In BSplitLayout, an item's LayoutData was lazy-initialized, but would always be created during ItemAdded(). Now we create the LayoutData explicitly, so that we can catch failed memory allocations. Closes #5524.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37817 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Alex Wilson:
* Added support for archiving/unarchiving.
* Coding style cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37613 a95241bf-73f2-0310-859d-f6bbb57e9c96

After the first call to BView::InvalidateLayout() further invocations don't
invoke the layout's InvalidateLayout() anymore. This could cause problems when
the layout caches layout related information and also updates those on calls
other than LayoutView(). A call to such a method after an InvalidateLayout()
would mark the cached info valid and the layout would use the cached info
until the first InvalidateLayout() after the next LayoutView(), even if
BView::InvalidateLayout() had been called again in the meantime.

* Introduced a new method BView::ResetLayoutInvalidation(), which must be
called by layout implementations whenever they have updated their cached
information and need further InvalidateLayout() notifications.
* Adjusted the existing layout implementations to use the method.

Fixes bug #4047.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31316 a95241bf-73f2-0310-859d-f6bbb57e9c96

Removed the BSize(const BRect&) constructor and added BRect::Size()
instead. Also added a BRect(BPoint, BSize) constructor.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21120 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merge from layout management branch.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18649 a95241bf-73f2-0310-859d-f6bbb57e9c96

More whitespace cleanup all over the place.

Add a bit more FBC stuff for the Layout API, which I missed before.

Override a bunch of methods in layout related classes for FBC stability.

* Especially made sure to override archiving methods, since these are called rarely, so the cost is very minimal
* Otherwise, the closer a class is to a base class, the more likely I was to give it all the overrides.

Add FBC padding to all (I think..) of the visible Layout related classes.

Add Perform() methods to all the layout-related classes that needed them.

Devirtualize BLayout::InvalidateLayout(), add a protected hook BLayout::DoLayout(). This will allow for much better control over the propagation of layout invalidations, and therefore cleaner, more optimal code.

Rename BLayout::DerivedLayoutItems() to DoLayout(), which is consistent with BView::DoLayout(). Also adjusted child classes and documentation.

Big change deriving BLayout from BLayoutItem, and allowing viewless BLayouts.
a few highlights:
* BLayout now derives publicly from BLayoutItem
* Added BAbstractLayout class, which our layouts now derive from
* updated layout builders to avoid creating views when they don't need to
* updated layout classes
* updated AboutSystem to fix a little regression
* more details on #6407
* please tell me about any regressions, I've tried to find them all, but some
may have slipped by.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38207 a95241bf-73f2-0310-859d-f6bbb57e9c96

Update BLayout::ItemAdded() and BLayout::ItemRemoved() to take an int32 index parameter, and ItemAdded() to return a bool indicating success or failure. Update BLayout::AddItem() to take the result of ItemAdded() into account. Also update BLayout::AllUnarchived() to take this into account. In either situation, if ItemAdded() returns false, the item does not get added to the layout. Removed various TODOs about code that could be removed once this change was made. In BSplitLayout, an item's LayoutData was lazy-initialized, but would always be created during ItemAdded(). Now we create the LayoutData explicitly, so that we can catch failed memory allocations. Closes #5524.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37817 a95241bf-73f2-0310-859d-f6bbb57e9c96

Patch by Alex Wilson:
* Added support for archiving/unarchiving.
* Coding style cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37613 a95241bf-73f2-0310-859d-f6bbb57e9c96

After the first call to BView::InvalidateLayout() further invocations don't
invoke the layout's InvalidateLayout() anymore. This could cause problems when
the layout caches layout related information and also updates those on calls
other than LayoutView(). A call to such a method after an InvalidateLayout()
would mark the cached info valid and the layout would use the cached info
until the first InvalidateLayout() after the next LayoutView(), even if
BView::InvalidateLayout() had been called again in the meantime.

* Introduced a new method BView::ResetLayoutInvalidation(), which must be
called by layout implementations whenever they have updated their cached
information and need further InvalidateLayout() notifications.
* Adjusted the existing layout implementations to use the method.

Fixes bug #4047.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31316 a95241bf-73f2-0310-859d-f6bbb57e9c96

Removed the BSize(const BRect&) constructor and added BRect::Size()
instead. Also added a BRect(BPoint, BSize) constructor.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21120 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merge from layout management branch.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18649 a95241bf-73f2-0310-859d-f6bbb57e9c96