qt5-qtwayland/qtwayland-do-not-redraw-decorations-everytime.patch

34 lines
1.5 KiB
Diff
Raw Normal View History

2019-07-30 13:39:18 +00:00
diff --git a/src/client/qwaylandshmbackingstore.cpp b/src/client/qwaylandshmbackingstore.cpp
index 3fe2ce80..6d660e64 100644
--- a/src/client/qwaylandshmbackingstore.cpp
+++ b/src/client/qwaylandshmbackingstore.cpp
@@ -289,11 +289,13 @@ void QWaylandShmBackingStore::resize(const QSize &size)
buffer = getBuffer(sizeWithMargins);
}
- qsizetype oldSize = mBackBuffer ? mBackBuffer->image()->sizeInBytes() : 0;
+ qsizetype oldSizeInBytes = mBackBuffer ? mBackBuffer->image()->sizeInBytes() : 0;
+ qsizetype newSizeInBytes = buffer->image()->sizeInBytes();
+
// mBackBuffer may have been deleted here but if so it means its size was different so we wouldn't copy it anyway
- if (mBackBuffer != buffer && oldSize == buffer->image()->sizeInBytes()) {
- memcpy(buffer->image()->bits(), mBackBuffer->image()->constBits(), buffer->image()->sizeInBytes());
- }
+ if (mBackBuffer != buffer && oldSizeInBytes == newSizeInBytes)
+ memcpy(buffer->image()->bits(), mBackBuffer->image()->constBits(), newSizeInBytes);
+
mBackBuffer = buffer;
// ensure the new buffer is at the beginning of the list so next time getBuffer() will pick
// it if possible
@@ -302,8 +304,9 @@ void QWaylandShmBackingStore::resize(const QSize &size)
mBuffers.prepend(buffer);
}
- if (windowDecoration() && window()->isVisible())
+ if (windowDecoration() && window()->isVisible() && oldSizeInBytes != newSizeInBytes) {
windowDecoration()->update();
+ }
}
QImage *QWaylandShmBackingStore::entireSurface() const