mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-28 15:23:51 +00:00
5ee44d898b
MozReview-Commit-ID: RrVzLcv27T --HG-- extra : amend_source : d14dc262bf300a81feaf03954d5783ea1c7451cb extra : histedit_source : aa39b53c122a719a5181b5a41d5351bbdf04cbd8
54 lines
1.6 KiB
Objective-C
54 lines
1.6 KiB
Objective-C
/* -*- 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 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] : nil; }
|
|
|
|
private:
|
|
mozilla::LayoutDeviceIntRegion mRegion;
|
|
nsTArray<NSView*> mViews;
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif // ViewRegion_h
|