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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.
#ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_
#define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_
#if defined(OS_MACOSX)
#include <OpenGL/OpenGL.h>
#endif
#if defined(TOOLKIT_GTK)
#include <gdk/gdk.h>
#endif
#include <string>
#include <vector>
#include "base/memory/scoped_ptr.h"
#include "base/callback_forward.h"
#include "base/timer/timer.h"
#include "content/common/content_export.h"
#include "content/port/browser/render_widget_host_view_port.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/gfx/range/range.h"
#include "ui/gfx/rect.h"
namespace content {
class RenderWidgetHostImpl;
// Basic implementation shared by concrete RenderWidgetHostView
// subclasses.
//
// Note that nothing should use this class, except concrete subclasses
// that are deriving from it, and code that is written specifically to
// use one of these concrete subclasses (i.e. platform-specific code).
//
// To enable embedders that add ports, everything else in content/
// should use the RenderWidgetHostViewPort interface.
//
// RenderWidgetHostView class hierarchy described in render_widget_host_view.h.
class CONTENT_EXPORT RenderWidgetHostViewBase
: public RenderWidgetHostViewPort {
public:
virtual ~RenderWidgetHostViewBase();
// RenderWidgetHostViewPort implementation.
virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
virtual void SelectionChanged(const string16& text,
size_t offset,
const gfx::Range& range) OVERRIDE;
virtual void SetBackground(const SkBitmap& background) OVERRIDE;
virtual const SkBitmap& GetBackground() OVERRIDE;
virtual gfx::Size GetPhysicalBackingSize() const OVERRIDE;
virtual float GetOverdrawBottomHeight() const OVERRIDE;
virtual bool IsShowingContextMenu() const OVERRIDE;
virtual void SetShowingContextMenu(bool showing_menu) OVERRIDE;
virtual string16 GetSelectedText() const OVERRIDE;
virtual bool IsMouseLocked() OVERRIDE;
virtual void UnhandledWheelEvent(
const blink::WebMouseWheelEvent& event) OVERRIDE;
virtual InputEventAckState FilterInputEvent(
const blink::WebInputEvent& input_event) OVERRIDE;
virtual void OnSetNeedsFlushInput() OVERRIDE;
virtual void OnDidFlushInput() OVERRIDE;
virtual void GestureEventAck(int gesture_event_type,
InputEventAckState ack_result) OVERRIDE;
virtual void SetPopupType(blink::WebPopupType popup_type) OVERRIDE;
virtual blink::WebPopupType GetPopupType() OVERRIDE;
virtual BrowserAccessibilityManager*
GetBrowserAccessibilityManager() const OVERRIDE;
virtual void ProcessAckedTouchEvent(const TouchEventWithLatencyInfo& touch,
InputEventAckState ack_result) OVERRIDE;
virtual scoped_ptr<SyntheticGestureTarget> CreateSyntheticGestureTarget()
OVERRIDE;
virtual bool CanSubscribeFrame() const OVERRIDE;
virtual void BeginFrameSubscription(
scoped_ptr<RenderWidgetHostViewFrameSubscriber> subscriber) OVERRIDE;
virtual void EndFrameSubscription() OVERRIDE;
virtual void OnSwapCompositorFrame(
uint32 output_surface_id,
scoped_ptr<cc::CompositorFrame> frame) OVERRIDE {}
virtual void ResizeCompositingSurface(const gfx::Size&) OVERRIDE {}
virtual void OnOverscrolled(gfx::Vector2dF accumulated_overscroll,
gfx::Vector2dF current_fling_velocity) OVERRIDE;
virtual uint32 RendererFrameNumber() OVERRIDE;
virtual void DidReceiveRendererFrame() OVERRIDE;
void SetBrowserAccessibilityManager(BrowserAccessibilityManager* manager);
// Notification that a resize or move session ended on the native widget.
void UpdateScreenInfo(gfx::NativeView view);
// Tells if the display property (work area/scale factor) has
// changed since the last time.
bool HasDisplayPropertyChanged(gfx::NativeView view);
#if defined(OS_WIN)
// The callback that DetachPluginsHelper calls for each child window. Call
// this directly if you want to do custom filtering on plugin windows first.
static void DetachPluginWindowsCallback(HWND window);
#endif
protected:
// Interface class only, do not construct.
RenderWidgetHostViewBase();
#if defined(OS_WIN)
// Shared implementation of MovePluginWindows for use by win and aura/wina.
static void MovePluginWindowsHelper(
HWND parent,
const std::vector<WebPluginGeometry>& moves);
static void PaintPluginWindowsHelper(
HWND parent,
const gfx::Rect& damaged_screen_rect);
// Needs to be called before the HWND backing the view goes away to avoid
// crashes in Windowed plugins.
static void DetachPluginsHelper(HWND parent);
#endif
// Whether this view is a popup and what kind of popup it is (select,
// autofill...).
blink::WebPopupType popup_type_;
// A custom background to paint behind the web content. This will be tiled
// horizontally. Can be null, in which case we fall back to painting white.
SkBitmap background_;
// While the mouse is locked, the cursor is hidden from the user. Mouse events
// are still generated. However, the position they report is the last known
// mouse position just as mouse lock was entered; the movement they report
// indicates what the change in position of the mouse would be had it not been
// locked.
bool mouse_locked_;
// Whether we are showing a context menu.
bool showing_context_menu_;
// A buffer containing the text inside and around the current selection range.
string16 selection_text_;
// The offset of the text stored in |selection_text_| relative to the start of
// the web page.
size_t selection_text_offset_;
// The current selection range relative to the start of the web page.
gfx::Range selection_range_;
protected:
// The scale factor of the display the renderer is currently on.
float current_device_scale_factor_;
private:
void FlushInput();
// Manager of the tree representation of the WebKit render tree.
scoped_ptr<BrowserAccessibilityManager> browser_accessibility_manager_;
gfx::Rect current_display_area_;
uint32 renderer_frame_number_;
base::OneShotTimer<RenderWidgetHostViewBase> flush_input_timer_;
DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewBase);
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_
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