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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /widget/cocoa/ViewRegion.h | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'widget/cocoa/ViewRegion.h')
-rw-r--r-- | widget/cocoa/ViewRegion.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/widget/cocoa/ViewRegion.h b/widget/cocoa/ViewRegion.h new file mode 100644 index 0000000000..4c98fab882 --- /dev/null +++ b/widget/cocoa/ViewRegion.h @@ -0,0 +1,54 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef ViewRegion_h +#define ViewRegion_h + +#include "Units.h" +#include "nsTArray.h" + +class nsChildView; + +@class NSView; + +namespace mozilla { + +/** + * Manages a set of NSViews to cover a LayoutDeviceIntRegion. + */ +class ViewRegion { + public: + ~ViewRegion(); + + mozilla::LayoutDeviceIntRegion Region() { return mRegion; } + + /** + * Update the region. + * @param aRegion The new region. + * @param aCoordinateConverter The nsChildView to use for converting + * LayoutDeviceIntRect device pixel coordinates into Cocoa NSRect coordinates. + * @param aContainerView The view that's going to be the superview of the + * NSViews which will be created for this region. + * @param aViewCreationCallback A block that instantiates new NSViews. + * @return Whether or not the region changed. + */ + bool UpdateRegion(const mozilla::LayoutDeviceIntRegion& aRegion, + const nsChildView& aCoordinateConverter, NSView* aContainerView, + NSView* (^aViewCreationCallback)()); + + /** + * Return an NSView from the region, if there is any. + */ + NSView* GetAnyView() { return mViews.Length() > 0 ? mViews[0] : NULL; } + + private: + mozilla::LayoutDeviceIntRegion mRegion; + nsTArray<NSView*> mViews; +}; + +} // namespace mozilla + +#endif // ViewRegion_h |