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We need to invalidate the graphics source pixmap cache for both child
items and parent items when changing the opacity of a graphics item.
Reviewed-by: Bjørn Erik Nilsen
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Don't invalidate the cache if we're only translating and the effect rect
is fully contained within the device rect of the painter.
Task-number: QTBUG-6901
Reviewed-by: Bjørn Erik Nilsen
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Reviewed-by: Trust Me
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Even for DeviceCoordinate mode we can return the raw pixmap if the
graphics item size is untransformed.
Reviewed-by: Bjørn Erik Nilsen
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This broke after commit: fb78a402b512b017c850e7410745c4d20da04a7c
Effects and auto-tests are now in line with the documentation.
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* Get rid of QGraphicsEffectSource from the public API, instead add
convenience functions in QGraphicsEffect. This way we commit to less
API, and are free to introduce a customizable QGraphicsEffectSource
in a future release.
* Move PixmapPadMode into QGraphicsEffect and tweak the names of the
enum values.
* Make QGraphicsBlurEffect::BlurHint into a bit flag, for extensibility.
Reviewed-by: Bjørn Erik Nilsen
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There's no grayscale effect anymore, use colorize effect.
Reviewed-by: Gunnar Sletta
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Reviewed-by: Paul Olav Tvete
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Autotest: included
Reviewed-by: Bjørn Erik Nilsen
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Reviewed-by: Bjørn Erik Nilsen
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Reviewed-by: Bjørn Erik Nilsen
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We have to initialize the painter with the 'effected' item's
opacity before calling QGraphicsEffect::draw; otherwise we'll
use the previous rendered item's opacity (which is wrong).
Reviewed-by: Michael Brasser
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Reviewed-by: Trust Me
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Reviewed-by: Trust Me
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Reviewed-by: Trust Me
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In case of caching, the effect must be notified whenever the source has
been invalidated; otherwise the cached pixmap will not be up-to-date.
Auto-test included.
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This is way more flexible as it allows for extension in the future.
Instead of having several virtual functions, which in most cases when
re-implemented have to do exactly the same, we now have one virtual
function which takes a ChangedFlags parameter do describe what kind of
changes that occurred to the source.
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