blob: 3dd430d4d0a055179bd35cc635a84468499bcce0 [file] [log] [blame]
// Copyright (c) 2011 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 "base/basictypes.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "skia/ext/platform_canvas.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/gfx/rect.h"
namespace gfx {
class Size;
namespace WebKit {
class WebWidget;
class WebWidgetClient;
struct WebScreenInfo;
#if defined(OS_MACOSX)
#ifdef __OBJC__
@class NSEvent;
class NSEvent;
// This class is a simple NativeView-based host for a WebWidget
class WebWidgetHost {
// 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);
#if defined(OS_MACOSX)
static void HandleEvent(gfx::NativeView view, NSEvent* event);
gfx::NativeView view_handle() const { return view_; }
WebKit::WebWidget* webwidget() const { return webwidget_; }
void DidInvalidateRect(const gfx::Rect& rect);
void DidScrollRect(int dx, int dy, const gfx::Rect& clip_rect);
void ScheduleComposite();
void ScheduleAnimation();
#if defined(OS_WIN)
void SetCursor(HCURSOR cursor);
void DiscardBackingStore();
// Allow clients to update the paint rect. For example, if we get a gdk
// expose or WM_PAINT event, we need to update the paint rect.
void UpdatePaintRect(const gfx::Rect& rect);
void Paint();
skia::PlatformCanvas* canvas() const { return canvas_.get(); }
WebKit::WebScreenInfo GetScreenInfo();
// Paints the entire canvas a semi-transparent black (grayish). This is used
// by the layout tests in fast/repaint. The alpha value matches upstream.
void DisplayRepaintMask() {
canvas()->drawARGB(167, 0, 0, 0);
void PaintRect(const gfx::Rect& rect);
#if defined(OS_WIN)
// Per-class wndproc. Returns true if the event should be swallowed.
virtual bool WndProc(UINT message, WPARAM wparam, LPARAM lparam);
void Resize(LPARAM lparam);
void MouseEvent(UINT message, WPARAM wparam, LPARAM lparam);
void WheelEvent(WPARAM wparam, LPARAM lparam);
void KeyEvent(UINT message, WPARAM wparam, LPARAM lparam);
void CaptureLostEvent();
void SetFocus(bool enable);
#elif defined(OS_MACOSX)
// These need to be called from a non-subclass, so they need to be public.
void Resize(const gfx::Rect& rect);
void MouseEvent(NSEvent *);
void WheelEvent(NSEvent *);
void KeyEvent(NSEvent *);
void SetFocus(bool enable);
#elif defined(TOOLKIT_GTK)
// ---------------------------------------------------------------------------
// 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);
void WindowDestroyed();
void Resize(const gfx::Size& size);
#if defined(OS_WIN)
void TrackMouseLeave(bool enable);
void ResetScrollRect();
void set_painting(bool value) {
#ifndef NDEBUG
painting_ = value;
gfx::NativeView view_;
WebKit::WebWidget* webwidget_;
scoped_ptr<skia::PlatformCanvas> canvas_;
// specifies the portion of the webwidget that needs painting
gfx::Rect paint_rect_;
// specifies the portion of the webwidget that needs scrolling
gfx::Rect scroll_rect_;
int scroll_dx_;
int scroll_dy_;
#if defined(OS_WIN)
bool track_mouse_leave_;
#if defined(TOOLKIT_GTK)
// Since GtkWindow resize is asynchronous, we have to stash the dimensions,
// so that the backing store doesn't have to wait for sizing to take place.
gfx::Size logical_size_;
#ifndef NDEBUG
bool painting_;
base::WeakPtrFactory<WebWidgetHost> weak_factory_;