MacViews: Initial skeleton for implementing NativeWidgetMac

ui/views/cocoa/bridged_content_view.mm

+// 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.
+
+#import "ui/views/cocoa/bridged_content_view.h"
+
+#include "base/logging.h"
+#include "ui/gfx/canvas_paint_mac.h"
+#include "ui/views/view.h"
+
+@implementation BridgedContentView
+
+@synthesize hostedView = hostedView_;
+
+- (id)initWithView:(views::View*)viewToHost {
+  DCHECK(viewToHost);
+  gfx::Rect bounds = viewToHost->bounds();
+  // To keep things simple, assume the origin is (0, 0) until there exists a use
+  // case for something other than that.
+  DCHECK(bounds.origin().IsOrigin());
+  NSRect initialFrame = NSMakeRect(0, 0, bounds.width(), bounds.height());
+  if ((self = [super initWithFrame:initialFrame]))
+    hostedView_ = viewToHost;
+
+  return self;
+}
+
+- (void)clearView {
+  hostedView_ = NULL;
+}
+
+// NSView implementation.
+
+- (void)setFrameSize:(NSSize)newSize {
+  [super setFrameSize:newSize];
+  if (!hostedView_)
+    return;
+
+  hostedView_->SetSize(gfx::Size(newSize.width, newSize.height));
+}
+
+- (void)drawRect:(NSRect)dirtyRect {
+  if (!hostedView_)
+    return;
+
+  gfx::CanvasSkiaPaint canvas(dirtyRect, false /* opaque */);
+  hostedView_->Paint(&canvas, views::CullSet());
+}
+
+@end