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// Copyright (c) 2012 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.
#import "chrome/browser/ui/cocoa/constrained_window/constrained_window_custom_window.h"
#import "base/mac/scoped_nsobject.h"
#import "chrome/browser/ui/chrome_style.h"
#import "chrome/browser/ui/cocoa/constrained_window/constrained_window_sheet_controller.h"
#include "skia/ext/skia_utils_mac.h"
#include "ui/gfx/scoped_ns_graphics_context_save_gstate_mac.h"
@implementation ConstrainedWindowCustomWindow
- (id)initWithContentRect:(NSRect)contentRect {
if ((self = [self initWithContentRect:contentRect
styleMask:NSBorderlessWindowMask
backing:NSBackingStoreBuffered
defer:NO])) {
base::scoped_nsobject<NSView> contentView(
[[ConstrainedWindowCustomWindowContentView alloc]
initWithFrame:NSZeroRect]);
[self setContentView:contentView];
}
return self;
}
- (id)initWithContentRect:(NSRect)contentRect
styleMask:(NSUInteger)windowStyle
backing:(NSBackingStoreType)bufferingType
defer:(BOOL)deferCreation {
if ((self = [super initWithContentRect:contentRect
styleMask:NSBorderlessWindowMask
backing:bufferingType
defer:NO])) {
[self setHasShadow:YES];
[self setBackgroundColor:gfx::SkColorToCalibratedNSColor(
chrome_style::GetBackgroundColor())];
[self setOpaque:NO];
[self setReleasedWhenClosed:NO];
}
return self;
}
- (BOOL)canBecomeKeyWindow {
return YES;
}
- (NSRect)frameRectForContentRect:(NSRect)windowContent {
id<ConstrainedWindowSheet> sheet = [ConstrainedWindowSheetController
sheetForOverlayWindow:[self parentWindow]];
ConstrainedWindowSheetController* sheetController =
[ConstrainedWindowSheetController controllerForSheet:sheet];
// Sheet controller may be nil if this window hasn't been shown yet.
if (!sheetController)
return windowContent;
NSRect frame;
frame.origin = [sheetController originForSheet:sheet
withWindowSize:windowContent.size];
frame.size = windowContent.size;
return frame;
}
@end
@implementation ConstrainedWindowCustomWindowContentView
- (void)drawRect:(NSRect)rect {
gfx::ScopedNSGraphicsContextSaveGState state;
// Draw symmetric difference between rect path and oval path as "clear".
NSBezierPath* ovalPath = [NSBezierPath
bezierPathWithRoundedRect:[self bounds]
xRadius:chrome_style::kBorderRadius
yRadius:chrome_style::kBorderRadius];
NSBezierPath* path = [NSBezierPath bezierPathWithRect:[self bounds]];
[path appendBezierPath:ovalPath];
[path setWindingRule:NSEvenOddWindingRule];
[[NSGraphicsContext currentContext] setCompositingOperation:
NSCompositeCopy];
[[NSColor clearColor] set];
[path fill];
[[self window] invalidateShadow];
}
@end
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