insufficient since there can be windows/content on top of the
moved window and the labels are painted on top of the scene
BUG: 318390
FIXED-IN: 4.11
REVIEW: 111861
Instead have a synthetic motion after the effect started
and explicitly set the selected window on click/drags
BUG: 314840
BUG: 314715
FIXED-IN: 4.11
CCBUG: 314717
REVIEW: 111276
Eg. gtk+ alters the modality after mapping and
before unmapping the window.
Therfore the former implementation ahd a wrong idea
about the modality until the window was activated and
again had a wrong idea when the dialog closed, keeping
the main client dimmed.
Modality changes at runtime are uncommon but legal and can
happen anytime.
BUG: 321340
FIXED-IN: 4.11
REVIEW: 111154
Supported Features:
* move/resize
* active/inactive
* special window type
* window decoration as missing in AnimationEffect
The animations are cancelled when they go into an invisible state (e.g.
desktop changed, minimized) and are set again when the window becomes
visible.
Where a transition is useful, the window gets animated, e.g. start/finish
of move resize.
BUG: 294856
FIXED-IN: 4.11
REVIEW: 110747
Cross fading with previous pixmap is achieved by referencing the old
window pixmap. WindowPaintData has a cross-fade-factor which interpolates
between 0.0 (completely old pixmap) to 1.0 (completely new pixmap).
If a cross fading factor is set and a previous pixmap is valid this one
is rendered on top of the current pixmap with opacity adjusted. This
results in a smoother fading.
To simplify the setup the AnimationEffect is extended and also takes care
about correctly (un)referencing the previous window pixmap. The maximize
effect is adjusted to make use of this new capabilities.
Unfortunately this setup has a huge problem with the case that the window
decoration gets smaller (e.g. from normal to maximized state). In this
situation it can happen that the old window is rendered with parts outside
the content resulting in video garbage being shown. To prevent this a set
of new WindowQuads is generated with normalized texture coordinates in
the safe area which contains real content.
For OpenGL2Window a PreviousContentLeaf is added which is only set up in
case the crass fading factor is set.
REVIEW: 110578