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- // Copyright 2014 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #ifndef COMPONENTS_REMOTE_COCOA_APP_SHIM_VIEWS_NSWINDOW_DELEGATE_H_
- #define COMPONENTS_REMOTE_COCOA_APP_SHIM_VIEWS_NSWINDOW_DELEGATE_H_
- #include "base/memory/raw_ptr.h"
- #import <Cocoa/Cocoa.h>
- #import "base/mac/scoped_nsobject.h"
- #include "components/remote_cocoa/app_shim/remote_cocoa_app_shim_export.h"
- #include "third_party/abseil-cpp/absl/types/optional.h"
- namespace remote_cocoa {
- class NativeWidgetNSWindowBridge;
- } // namespace remote_cocoa
- // The delegate set on the NSWindow when a
- // remote_cocoa::NativeWidgetNSWindowBridge is initialized.
- REMOTE_COCOA_APP_SHIM_EXPORT
- @interface ViewsNSWindowDelegate : NSObject <NSWindowDelegate> {
- @private
- raw_ptr<remote_cocoa::NativeWidgetNSWindowBridge>
- _parent; // Weak. Owns this.
- base::scoped_nsobject<NSCursor> _cursor;
- absl::optional<float> _aspectRatio;
- // Only valid during a live resize.
- // Used to keep track of whether a resize is happening horizontally or
- // vertically, even if physically the user is resizing in both directions.
- // The value is significant when |_aspectRatio| is set, i.e., we are
- // responsible for maintaining the aspect ratio of the window. As the user is
- // dragging one of the corners to resize, we need the resize to be either
- // horizontal or vertical all the time, so we pick one of the directions and
- // stick to it. This is necessary to achieve stable results, because in order
- // to keep the aspect ratio fixed we override one window dimension with a
- // value computed from the other dimension.
- absl::optional<bool> _resizingHorizontally;
- }
- // If set, the cursor set in -[NSResponder updateCursor:] when the window is
- // reached along the responder chain.
- @property(retain, nonatomic) NSCursor* cursor;
- // Initialize with the given |parent|.
- - (instancetype)initWithBridgedNativeWidget:
- (remote_cocoa::NativeWidgetNSWindowBridge*)parent;
- // Notify that the window has been reordered in (or removed from) the window
- // server's screen list. This is a substitute for -[NSWindowDelegate
- // windowDidExpose:], which is only sent for nonretained windows (those without
- // a backing store). |notification| is optional and can be set when redirecting
- // a notification such as NSApplicationDidHideNotification.
- - (void)onWindowOrderChanged:(NSNotification*)notification;
- // Notify that the system control tint changed.
- - (void)onSystemControlTintChanged:(NSNotification*)notification;
- // Called on the delegate of a modal sheet when its modal session ends.
- - (void)sheetDidEnd:(NSWindow*)sheet
- returnCode:(NSInteger)returnCode
- contextInfo:(void*)contextInfo;
- // Set the aspect ratio of the window. Window resizes will be constrained in an
- // attempt to maintain the aspect ratio.
- // Cocoa provides this functionality via the [NSWindow aspectRatio] property,
- // but its implementation prioritizes the aspect ratio over the minimum size:
- // one of the dimensions can go below the minimum size if that's what it takes
- // to maintain the aspect ratio. This is inacceptable for us.
- - (void)setAspectRatio:(float)aspectRatio;
- @end
- #endif // COMPONENTS_REMOTE_COCOA_APP_SHIM_VIEWS_NSWINDOW_DELEGATE_H_
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