Implement pepper flash fullscreen on Mac

content/browser/renderer_host/render_widget_host_view_mac.mm

 // 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.
 
 #include "content/browser/renderer_host/render_widget_host_view_mac.h"
 
 #include <QuartzCore/QuartzCore.h>
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
@@ skipping 26 matching lines @@
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/native_web_keyboard_event.h"
 #import "content/public/browser/render_widget_host_view_mac_delegate.h"
 #include "skia/ext/platform_canvas.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebScreenInfo.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/mac/WebInputEventFactory.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/mac/WebScreenInfoFactory.h"
 #import "third_party/mozilla/ComplexTextInputPanel.h"
 #include "third_party/skia/include/core/SkColor.h"
+#import "ui/base/cocoa/fullscreen_window_manager.h"
+#import "ui/base/cocoa/underlay_opengl_hosting_window.h"
 #include "ui/gfx/point.h"
 #include "ui/gfx/scoped_ns_graphics_context_save_gstate_mac.h"
 #include "ui/gfx/surface/io_surface_support_mac.h"
 #include "webkit/glue/webaccessibility.h"
 #include "webkit/plugins/npapi/webplugin.h"
 
 using content::BrowserThread;
 using content::RenderWidgetHostView;
 using WebKit::WebInputEvent;
 using WebKit::WebInputEventFactory;
@@ skipping 53 matching lines @@
 - (void)scrollOffsetPinnedToLeft:(BOOL)left toRight:(BOOL)right;
 - (void)setHasHorizontalScrollbar:(BOOL)has_horizontal_scrollbar;
 - (void)keyEvent:(NSEvent*)theEvent wasKeyEquivalent:(BOOL)equiv;
 - (void)cancelChildPopups;
 - (void)checkForPluginImeCancellation;
 @end
 
 // NSEvent subtype for scroll gestures events.
 static const short kIOHIDEventTypeScroll = 6;
 
+// A window subclass that allows the fullscreen window to become main and gain
+// keyboard focus. This is only used for pepper flash. Normal fullscreen is
+// handled by the browser.
+@interface PepperFlashFullscreenWindow : UnderlayOpenGLHostingWindow
+@end
+
+@implementation PepperFlashFullscreenWindow
+
+- (BOOL)canBecomeKeyWindow {
+  return YES;
+}
+
+- (BOOL)canBecomeMainWindow {
+  return YES;
+}
+
+@end
+
+
 namespace {
 
 // Maximum number of characters we allow in a tooltip.
 const size_t kMaxTooltipLength = 1024;
 
 // TODO(suzhe): Upstream this function.
 WebKit::WebColor WebColorFromNSColor(NSColor *color) {
   CGFloat r, g, b, a;
   [color getRed:&r green:&g blue:&b alpha:&a];
 
@@ skipping 156 matching lines @@
   NSPoint origin_view =
       [cocoa_view_ convertPoint:origin_window fromView:nil];
   NSRect initial_frame = NSMakeRect(origin_view.x,
                                     origin_view.y,
                                     pos.width(),
                                     pos.height());
   [cocoa_view_ setFrame:initial_frame];
 }
 
 void RenderWidgetHostViewMac::InitAsFullscreen(
-    RenderWidgetHostView* /*reference_host_view*/) {
-  NOTIMPLEMENTED() << "Full screen not implemented on Mac";
+    RenderWidgetHostView* reference_host_view) {

[Nico, 2012/03/30 19:33:57]

Comment that this is only used for plugin fullscreen (copy parts of the cl
description as comment)

[sail, 2012/03/30 23:06:06]

Done.

+  NSWindow* parent_window = nil;
+  if (reference_host_view)
+    parent_window = [reference_host_view->GetNativeView() window];
+  NSScreen* screen = [parent_window screen];
+  if (!screen)
+    screen = [NSScreen mainScreen];
+
+  fullscreen_window_.reset([[PepperFlashFullscreenWindow alloc]
+      initWithContentRect:[screen frame]
+                styleMask:NSBorderlessWindowMask
+                  backing:NSBackingStoreBuffered
+                    defer:NO]);
+  [fullscreen_window_ setLevel:NSFloatingWindowLevel];
+  [fullscreen_window_ setReleasedWhenClosed:NO];
+  [cocoa_view_ setCanBeKeyView:YES];
+  [cocoa_view_ setFrame:[[fullscreen_window_ contentView] bounds]];
+  [cocoa_view_ setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
+  [[fullscreen_window_ contentView] addSubview:cocoa_view_];
+
+  fullscreen_window_manager_.reset([[FullscreenWindowManager alloc]
+      initWithWindow:fullscreen_window_.get()
+       desiredScreen:screen]);
+  [fullscreen_window_manager_ enterFullscreenMode];
+  [fullscreen_window_ makeKeyAndOrderFront:nil];
 }
 
 RenderWidgetHost* RenderWidgetHostViewMac::GetRenderWidgetHost() const {
   return render_widget_host_;
 }
 
 void RenderWidgetHostViewMac::DidBecomeSelected() {
   if (!is_hidden_)
     return;
 
@@ skipping 317 matching lines @@
       [static_cast<AcceleratedPluginView*>(subview)
           onRenderWidgetHostViewGone];
     }
   }
 
   // We've been told to destroy.
   [cocoa_view_ retain];
   [cocoa_view_ removeFromSuperview];
   [cocoa_view_ autorelease];
 
+  [fullscreen_window_manager_ exitFullscreenMode];
+  fullscreen_window_manager_.reset();
+  [fullscreen_window_ close];
+  fullscreen_window_.reset();
+
   // We get this call just before |render_widget_host_| deletes
   // itself.  But we are owned by |cocoa_view_|, which may be retained
   // by some other code.  Examples are WebContentsViewMac's
   // |latent_focus_view_| and TabWindowController's
   // |cachedContentView_|.
   render_widget_host_ = NULL;
 }
 
 // Called from the renderer to tell us what the tooltip text should be. It
 // calls us frequently so we need to cache the value to prevent doing a lot
@@ skipping 817 matching lines @@
   }
 
   // Don't cancel child popups; the key events are probably what's triggering
   // the popup in the first place.
 
   RenderWidgetHostImpl* widgetHost = renderWidgetHostView_->render_widget_host_;
   DCHECK(widgetHost);
 
   NativeWebKeyboardEvent event(theEvent);
 
+  // When Escape is pressed, force fullscreen windows to close.
+  if (event.type == NativeWebKeyboardEvent::RawKeyDown &&
+      event.windowsKeyCode == ui::VKEY_ESCAPE &&
+      renderWidgetHostView_->fullscreen_window()) {
+    widgetHost->Shutdown();
+    return;

[Nico, 2012/03/30 19:33:57]

Is flash responsible for the "hit esc to exit" message? Should it be responsible
for handling this event then too?

[sail, 2012/03/30 23:06:06]

This additional check is needed incase the render is hung.
I copy/pasted a comment from the GTK code that explains this.

+  }
+
   // We only handle key down events and just simply forward other events.
   if ([theEvent type] != NSKeyDown) {
     widgetHost->ForwardKeyboardEvent(event);
 
     // Possibly autohide the cursor.
     if ([RenderWidgetHostViewCocoa shouldAutohideCursorForEvent:theEvent])
       [NSCursor setHiddenUntilMouseMoves:YES];
 
     return;
   }
@@ skipping 1285 matching lines @@
   if (!string) return NO;
 
   // If the user is currently using an IME, confirm the IME input,
   // and then insert the text from the service, the same as TextEdit and Safari.
   [self confirmComposition];
   [self insertText:string];
   return YES;
 }
 
 @end