MacViews: views_examples_with_content_exe working!

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 "ui/gfx/mac/point_utils.h"
+#include "ui/accessibility/ax_view_state.h"
+#include "ui/gfx/canvas.h"
+#include "ui/gfx/canvas_paint_mac.h"
+#include "ui/views/view.h"
+#include "ui/views/widget/widget.h"
+
+namespace {
+
+template <class OSTREAM>
+OSTREAM& operator<<(OSTREAM& out, const NSRect& rect) {
+  CGFloat x = rect.origin.x;
+  CGFloat y = rect.origin.y;
+  out << '[' << rect.size.width << 'x' << rect.size.height
+      << (x < 0 ? '-' : '+') << x << (y < 0 ? '-' : '+') << y << ']';
+  return out;
+}
+
+template <class OSTREAM>
+OSTREAM& operator<<(OSTREAM& out, const NSPoint& point) {
+  out << '(' << point.x << ',' << point.y << ')';
+  return out;
+}
+}
+
+@implementation BridgedContentView
+
+- (id)initWithView:(views::View*)viewToHost {
+  DCHECK(viewToHost);
+  NSRect initialFrame = ScreenRectToNSRect(viewToHost->bounds());
+  if ((self = [super initWithFrame:initialFrame])) {
+    hostedView_ = viewToHost;
+  }
+  return self;
+}
+
+- (views::View*)view {
+  return hostedView_;
+}
+
+- (void)clearView {
+  hostedView_ = NULL;
+}
+
+// BridgedContentView private implementation.
+
+- (void)handleMouseEvent:(NSEvent*)theEvent {
+  if (!hostedView_)
+    return;
+
+  ui::MouseEvent event(theEvent);
+
+  NSPoint windowLocation = [theEvent locationInWindow];
+  NSPoint viewLocation = [self convertPoint:windowLocation fromView:nil];
+  event.set_location(event.location() +
+                     gfx::Vector2dF(viewLocation.x - windowLocation.x,
+                                    viewLocation.y - windowLocation.y));
+
+  {
+    gfx::Point uiViewLocation = event.location();
+    views::View::ConvertPointFromWidget(hostedView_, &uiViewLocation);
+
+    DLOG(INFO) << "Forwarding mouse event in " << [self frame] << " "
+               << hostedView_->GetClassName() << ":"
+               << " window" << windowLocation << " view" << viewLocation
+               << " ui.Location: " << event.location_f().ToString()
+               << " ui.ViewLocation: " << uiViewLocation.ToString();
+  }
+
+  hostedView_->GetWidget()->OnMouseEvent(&event);
+}
+
+// NSView implementation.
+
+- (void)setFrame:(NSRect)newFrame {
+  [super setFrame:newFrame];
+  hostedView_->SetSize(gfx::Size(NSWidth(newFrame), NSHeight(newFrame)));
+}
+
+- (void)drawRect:(NSRect)dirtyRect {
+  if (!hostedView_)
+    return;
+
+  gfx::CanvasSkiaPaint canvas(dirtyRect, false /* opaque */);
+  hostedView_->Paint(&canvas, views::CullSet());
+}
+
+- (void)mouseDown:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)mouseDragged:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+- (void)mouseUp:(NSEvent*)theEvent {
+  [self handleMouseEvent:theEvent];
+}
+
+// NSAccessibility informal protocol implementation.
+
+- (NSArray*)accessibilityAttributeNames {
+  NSMutableArray* attributes =
+      [[super accessibilityAttributeNames] mutableCopy];
+  if (!hostedView_)
+    return [attributes autorelease];
+
+  [attributes addObject:NSAccessibilityValueAttribute];
+  [attributes addObject:NSAccessibilityDescriptionAttribute];
+  return [attributes autorelease];
+}
+
+- (id)accessibilityAttributeValue:(NSString*)attribute {
+  if (!hostedView_)
+    return [super accessibilityAttributeValue:attribute];
+
+  ui::AXViewState state;
+  hostedView_->GetAccessibleState(&state);
+  switch (state.role) {
+    default:
+      NOTREACHED();
+  }
+#if 0
+  if ([attribute isEqual:NSAccessibilityRoleAttribute])
+    return NSAccessibilityTabGroupRole;
+  if ([attribute isEqual:NSAccessibilityTabsAttribute]) {
+    NSMutableArray* tabs = [[[NSMutableArray alloc] init] autorelease];
+    NSArray* children =
+        [self accessibilityAttributeValue:NSAccessibilityChildrenAttribute];
+    for (id child in children) {
+      if ([[child accessibilityAttributeValue:NSAccessibilityRoleAttribute]
+          isEqual:NSAccessibilityRadioButtonRole]) {
+        [tabs addObject:child];
+      }
+    }
+    return tabs;
+  }
+  if ([attribute isEqual:NSAccessibilityContentsAttribute])
+    return [self accessibilityAttributeValue:NSAccessibilityChildrenAttribute];
+  if ([attribute isEqual:NSAccessibilityValueAttribute])
+    return [controller_ activeTabView];
+#endif
+
+  return [super accessibilityAttributeValue:attribute];
+}
+
+@end