cef/cef1/libcef/webwidget_host.h

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// Copyright (c) 2006-2008 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 CEF_LIBCEF_WEBWIDGET_HOST_H_
#define CEF_LIBCEF_WEBWIDGET_HOST_H_
#pragma once
#include <map>
#include <vector>
#include "include/internal/cef_string.h"
#include "include/internal/cef_types.h"
#include "include/internal/cef_types_wrappers.h"
#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "base/time.h"
#include "base/timer.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/platform/WebRect.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebTextInputType.h"
#include "third_party/skia/include/core/SkRegion.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/gfx/rect.h"
#include "webkit/plugins/npapi/webplugin.h"
#if defined(OS_WIN)
#include "ui/base/win/ime_input.h"
#endif
#if defined(TOOLKIT_GTK)
#include <gtk/gtk.h> // NOLINT(build/include_order)
#endif
namespace gfx {
class Rect;
class Size;
}
namespace WebKit {
class WebWidget;
class WebWidgetClient;
class WebKeyboardEvent;
struct WebScreenInfo;
}
#if defined(OS_MACOSX)
#ifdef __OBJC__
@class NSEvent;
#else
class NSEvent;
#endif
#endif
// This class is a simple NativeView-based host for a WebWidget
class WebWidgetHost {
public:
class PaintDelegate {
public:
virtual ~PaintDelegate() {}
virtual void Paint(bool popup, const std::vector<CefRect>& dirtyRects,
const void* buffer) =0;
};
// The new instance is deleted once the associated NativeView is destroyed.
// The newly created window should be resized after it is created, using the
// MoveWindow (or equivalent) function.
static WebWidgetHost* Create(gfx::NativeView parent_view,
WebKit::WebWidgetClient* client,
PaintDelegate* paint_delegate);
virtual ~WebWidgetHost();
gfx::NativeView view_handle() const { return view_; }
WebKit::WebWidget* webwidget() const { return webwidget_; }
void InvalidateRect(const gfx::Rect& rect);
void ScrollRect(int dx, int dy, const gfx::Rect& clip_rect);
// Called for accelerated content like WebGL.
void ScheduleComposite();
// Called for requestAnimationFrame animations.
void ScheduleAnimation();
#if defined(OS_WIN)
void SetCursor(HCURSOR cursor);
#endif
#if defined(OS_MACOSX)
void Paint(SkRegion& update_rgn);
#else
void Paint();
#endif
bool GetImage(int width, int height, void* buffer);
void SetSize(int width, int height);
void GetSize(int& width, int& height);
skia::PlatformCanvas* canvas() const { return canvas_.get(); }
WebKit::WebScreenInfo GetScreenInfo();
WebKit::WebKeyboardEvent GetLastKeyEvent() const { return last_key_event_; }
void SetLastKeyEvent(WebKit::WebKeyboardEvent keyEvent)
{ last_key_event_ = keyEvent; }
void SetTooltipText(const CefString& tooltip_text);
void SendKeyEvent(cef_key_type_t type, const cef_key_info_t& keyInfo,
int modifiers);
void SendMouseClickEvent(int x, int y, cef_mouse_button_type_t type,
bool mouseUp, int clickCount);
void SendMouseMoveEvent(int x, int y, bool mouseLeave);
void SendMouseWheelEvent(int x, int y, int deltaX, int deltaY);
void SendFocusEvent(bool setFocus);
void SendCaptureLostEvent();
// Manage windowed plugins when window rendering is disabled.
bool HasWindowedPlugins() { return !plugin_map_.empty(); }
void AddWindowedPlugin(gfx::PluginWindowHandle handle);
void RemoveWindowedPlugin(gfx::PluginWindowHandle handle);
void MoveWindowedPlugin(const webkit::npapi::WebPluginGeometry& geometry);
gfx::PluginWindowHandle GetWindowedPluginAt(int x, int y);
void SetFrameRate(int frames_per_second);
virtual bool IsTransparent() { return false; }
void set_popup(bool popup) { popup_ = popup; }
bool popup() { return popup_; }
PaintDelegate* paint_delegate() { return paint_delegate_; }
protected:
WebWidgetHost();
// Update the region that will be painted to the canvas by WebKit the next
// time that Paint() is called.
void UpdatePaintRect(const gfx::Rect& rect);
void PaintRect(const gfx::Rect& rect);
// Trigger the OS to invalidate/repaint the window.
void InvalidateWindow();
void InvalidateWindowRect(const gfx::Rect& rect);
// When window rendering is enabled this method invalidates the client area to
// trigger repaint via the OS. When window rendering is disabled this method
// is used to generate CefRenderHandler::OnPaint() calls.
void ScheduleTimer();
void DoTimer();
#if defined(OS_WIN)
// Per-class wndproc. Returns true if the event should be swallowed.
virtual bool WndProc(UINT message, WPARAM wparam, LPARAM lparam);
virtual void MouseEvent(UINT message, WPARAM wparam, LPARAM lparam);
void WheelEvent(WPARAM wparam, LPARAM lparam);
virtual void KeyEvent(UINT message, WPARAM wparam, LPARAM lparam);
void CaptureLostEvent();
void SetFocus(bool enable);
void OnNotify(WPARAM wparam, NMHDR* header);
static LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
LRESULT OnImeSetContext(UINT message, WPARAM wparam, LPARAM lparam,
BOOL& handled);
LRESULT OnImeStartComposition(UINT message, WPARAM wparam, LPARAM lparam,
BOOL& handled);
LRESULT OnImeComposition(UINT message, WPARAM wparam, LPARAM lparam,
BOOL& handled);
LRESULT OnImeEndComposition(UINT message, WPARAM wparam, LPARAM lparam,
BOOL& handled);
void OnInputLangChange(DWORD character_set, HKL input_language_id);
void UpdateImeInputState();
void ToggleImeTimer();
#elif defined(OS_MACOSX)
// These need to be called from a non-subclass, so they need to be public.
public:
virtual void MouseEvent(NSEvent* event);
void WheelEvent(NSEvent* event);
virtual void KeyEvent(NSEvent* event);
virtual void SetFocus(bool enable);
protected:
#elif defined(TOOLKIT_GTK)
public:
// ---------------------------------------------------------------------------
// This is needed on Linux because the GtkWidget creation is the same between
// both web view hosts and web widget hosts. The Windows code manages this by
// reusing the WndProc function (static, above). However, GTK doesn't use a
// single big callback function like that so we have a static function that
// sets up a GtkWidget correctly.
// parent: a GtkBox to pack the new widget at the end of
// host: a pointer to a WebWidgetHost (or subclass thereof)
// ---------------------------------------------------------------------------
static gfx::NativeView CreateWidget(gfx::NativeView parent_view,
WebWidgetHost* host);
virtual void KeyEvent(GdkEventKey* event);
#endif
#if defined(OS_WIN)
void TrackMouseLeave(bool enable);
#endif
void set_painting(bool value) {
painting_ = value;
}
void EnsureTooltip();
void ResetTooltip();
gfx::NativeView view_;
// The paint delegate is used instead of the view when window rendering is
// disabled.
PaintDelegate* paint_delegate_;
WebKit::WebWidget* webwidget_;
scoped_ptr<skia::PlatformCanvas> canvas_;
int canvas_w_;
int canvas_h_;
// True if this widget is a popup widget.
bool popup_;
// Specifies the portion of the webwidget that needs painting.
// TODO(cef): Update the Linux port to use regions instead of rectangles.
#if defined(OS_WIN) || defined(OS_MACOSX)
SkRegion paint_rgn_;
#else
gfx::Rect paint_rect_;
#endif
base::OneShotTimer<WebWidgetHost> timer_;
base::TimeTicks timer_last_;
bool timer_executing_;
bool timer_wanted_;
int64 frame_delay_;
#if defined(OS_WIN)
// Used to call UpdateImeInputState() while IME is active.
base::RepeatingTimer<WebWidgetHost> ime_timer_;
#endif
// The map of windowed plugins that need to be drawn when window rendering is
// disabled.
typedef std::map<gfx::PluginWindowHandle, webkit::npapi::WebPluginGeometry>
PluginMap;
PluginMap plugin_map_;
#if defined(OS_WIN)
bool track_mouse_leave_;
std::wstring tooltip_text_;
gfx::NativeView tooltip_view_;
bool tooltip_showing_;
// Wrapper class for IME input.
ui::ImeInput ime_input_;
// Represents whether or not this browser process is receiving status messages
// about the focused edit control from a renderer process.
bool ime_notification_;
// Stores the current text input type.
WebKit::WebTextInputType text_input_type_;
// Stores the current caret bounds of input focus.
WebKit::WebRect caret_bounds_;
#endif // OS_WIN
#if defined(OS_MACOSX)
int mouse_modifiers_;
WebKit::WebMouseEvent::Button mouse_button_down_;
#endif
WebKit::WebKeyboardEvent last_key_event_;
bool painting_;
bool layouting_;
static const int kDefaultFrameRate;
static const int kMaxFrameRate;
};
#endif // CEF_LIBCEF_WEBWIDGET_HOST_H_