Using a weak pointer is the best way to ensure no invalid
pointer is used. This also fixes a possible crash in
simgear::canvas::Element::getParentStyle on destructing
canvas elements.
- Prevent writing to property tree in wrong thread.
- Add Element::getBoundingBox and
Element::getTightBoundingBox as uniform way to
retrieve bounding boxes of all canvas elements.
- Update path bounding boxe in update traversal.
If setting properties on a group a check is performed if
this property exists on any possible child element, and
only if this is the case the property is stored in the
groups style.
Previously elements have been only initialized during
their first usage, leading to ignored styles if they
have been set on a parent element before instantiating
an instance of the actual element type.
Removing text elements failed due to prefering removing the
style property with the same name. Add a flag to each style
indicating whether it can be inherited. The text property
is only applicable to text elements and can not be inherited.
Now groups can not have a text property, avoiding the name
clash with the text element.
Style setters are now only setup once for each element type and
not for each element instance as before. A static map holds the
setters for each element type. Also an animation type is stored
which will later allow to animate properties of Canvas elements
without specifying and animation type.
Don't reduce width of bounding box below character width
even if outline of rendered character is smaller. This
prevents trailing spaces from being ignored and also
fixes continuously chaging alignment (especially with
monospace fonts).
parseColor is used to parse a CSS color string into an osg::Vec4
which is only available in SimGearScene. If someone needs the
function also in SimGear headless mode we have to think about
where to better place this function.
- Refactor Canvas from FlightGear and fix lazy rendering with
recursive canvases.
- New classes PropertyBasedElement and PropertyBasedManager for
creating subsystems controlled by the property tree.
- New method parseColor to parse CSS 3 conformant color strings
(only basic color schemes supported)
- New Rect class representing a rectangle.
Thomas Geymayer