138 lines
4.2 KiB
Text
138 lines
4.2 KiB
Text
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#import "browser/ui/cocoa/custom_frame_view.h"
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#import <objc/runtime.h>
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#import <Carbon/Carbon.h>
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#include "base/logging.h"
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#include "base/mac/mac_util.h"
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#include "base/mac/scoped_nsautorelease_pool.h"
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namespace {
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BOOL gCanDrawTitle = NO;
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BOOL gCanGetCornerRadius = NO;
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} // namespace
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@interface NSView (Swizzles)
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- (void)drawRectOriginal:(NSRect)rect;
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- (NSPoint)_fullScreenButtonOriginOriginal;
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@end
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@interface NSWindow (FramedBrowserWindow)
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- (NSPoint)fullScreenButtonOriginAdjustment;
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@end
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@implementation NSWindow (CustomFrameView)
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- (void)drawCustomFrameRect:(NSRect)rect forView:(NSView*)view {
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[view drawRectOriginal:rect];
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}
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@end
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@interface CustomFrameView : NSView
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@end
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@implementation CustomFrameView
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// This is where we swizzle drawRect, and add in two methods that we
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// need. If any of these fail it shouldn't affect the functionality of the
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// others. If they all fail, we will lose window frame theming and
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// roll overs for our close widgets, but things should still function
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// correctly.
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+ (void)load {
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base::mac::ScopedNSAutoreleasePool pool;
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// On 10.8+ the background for textured windows are no longer drawn by
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// NSGrayFrame, and NSThemeFrame is used instead <http://crbug.com/114745>.
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Class borderViewClass = NSClassFromString(
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base::mac::IsOSMountainLionOrLater() ? @"NSThemeFrame" : @"NSGrayFrame");
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DCHECK(borderViewClass);
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if (!borderViewClass) return;
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// Exchange draw rect.
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Method m0 = class_getInstanceMethod([self class], @selector(drawRect:));
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DCHECK(m0);
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if (m0) {
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BOOL didAdd = class_addMethod(borderViewClass,
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@selector(drawRectOriginal:),
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method_getImplementation(m0),
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method_getTypeEncoding(m0));
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DCHECK(didAdd);
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if (didAdd) {
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Method m1 = class_getInstanceMethod(borderViewClass,
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@selector(drawRect:));
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Method m2 = class_getInstanceMethod(borderViewClass,
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@selector(drawRectOriginal:));
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DCHECK(m1 && m2);
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if (m1 && m2) {
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method_exchangeImplementations(m1, m2);
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}
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}
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}
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// Swizzle the method that sets the origin for the Lion fullscreen button. Do
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// nothing if it cannot be found.
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m0 = class_getInstanceMethod([self class],
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@selector(_fullScreenButtonOrigin));
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if (m0) {
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BOOL didAdd = class_addMethod(borderViewClass,
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@selector(_fullScreenButtonOriginOriginal),
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method_getImplementation(m0),
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method_getTypeEncoding(m0));
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if (didAdd) {
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Method m1 = class_getInstanceMethod(borderViewClass,
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@selector(_fullScreenButtonOrigin));
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Method m2 = class_getInstanceMethod(borderViewClass,
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@selector(_fullScreenButtonOriginOriginal));
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if (m1 && m2) {
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method_exchangeImplementations(m1, m2);
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}
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}
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}
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}
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+ (BOOL)canDrawTitle {
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return gCanDrawTitle;
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}
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+ (BOOL)canGetCornerRadius {
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return gCanGetCornerRadius;
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}
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- (id)initWithFrame:(NSRect)frame {
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// This class is not for instantiating.
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[self doesNotRecognizeSelector:_cmd];
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return nil;
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}
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- (id)initWithCoder:(NSCoder*)coder {
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// This class is not for instantiating.
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[self doesNotRecognizeSelector:_cmd];
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return nil;
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}
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// Here is our custom drawing for our frame.
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- (void)drawRect:(NSRect)rect {
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// Delegate drawing to the window, whose default implementation (above) is to
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// call into the original implementation.
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[[self window] drawCustomFrameRect:rect forView:self];
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}
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// Override to move the fullscreen button to the left of the profile avatar.
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- (NSPoint)_fullScreenButtonOrigin {
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NSWindow* window = [self window];
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NSPoint offset = NSZeroPoint;
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if ([window respondsToSelector:@selector(fullScreenButtonOriginAdjustment)])
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offset = [window fullScreenButtonOriginAdjustment];
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NSPoint origin = [self _fullScreenButtonOriginOriginal];
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origin.x += offset.x;
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origin.y += offset.y;
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return origin;
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}
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@end
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