Move webcursors code from webkit/ to content.

webkit/common/cursors/webcursor.h

-// 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 WEBKIT_COMMON_CURSORS_WEBCURSOR_H_
-#define WEBKIT_COMMON_CURSORS_WEBCURSOR_H_
-
-#include "base/basictypes.h"
-#include "third_party/WebKit/public/platform/WebCursorInfo.h"
-#include "ui/gfx/display.h"
-#include "ui/gfx/native_widget_types.h"
-#include "ui/gfx/point.h"
-#include "ui/gfx/size.h"
-#include "webkit/common/webkit_common_export.h"
-
-#include <vector>
-
-#if defined(USE_AURA)
-#include "ui/base/cursor/cursor.h"
-#endif
-
-#if defined(OS_WIN)
-typedef struct HINSTANCE__* HINSTANCE;
-typedef struct HICON__* HICON;
-typedef HICON HCURSOR;
-#elif defined(TOOLKIT_GTK)
-typedef struct _GdkCursor GdkCursor;
-#elif defined(OS_MACOSX)
-#ifdef __OBJC__
-@class NSCursor;
-#else
-class NSCursor;
-#endif
-#endif
-
-class Pickle;
-class PickleIterator;
-
-// This class encapsulates a cross-platform description of a cursor.  Platform
-// specific methods are provided to translate the cross-platform cursor into a
-// platform specific cursor.  It is also possible to serialize / de-serialize a
-// WebCursor.
-class WEBKIT_COMMON_EXPORT WebCursor {
- public:
-  struct CursorInfo {
-    explicit CursorInfo(blink::WebCursorInfo::Type cursor_type)
-        : type(cursor_type),
-          image_scale_factor(1) {
-#if defined(OS_WIN)
-      external_handle = NULL;
-#endif
-    }
-
-    CursorInfo()
-        : type(blink::WebCursorInfo::TypePointer),
-          image_scale_factor(1) {
-#if defined(OS_WIN)
-      external_handle = NULL;
-#endif
-    }
-
-    blink::WebCursorInfo::Type type;
-    gfx::Point hotspot;
-    float image_scale_factor;
-    SkBitmap custom_image;
-#if defined(OS_WIN)
-    HCURSOR external_handle;
-#endif
-  };
-
-  WebCursor();
-  explicit WebCursor(const CursorInfo& cursor_info);
-  ~WebCursor();
-
-  // Copy constructor/assignment operator combine.
-  WebCursor(const WebCursor& other);
-  const WebCursor& operator=(const WebCursor& other);
-
-  // Conversion from/to CursorInfo.
-  void InitFromCursorInfo(const CursorInfo& cursor_info);
-  void GetCursorInfo(CursorInfo* cursor_info) const;
-
-  // Serialization / De-serialization
-  bool Deserialize(PickleIterator* iter);
-  bool Serialize(Pickle* pickle) const;
-
-  // Returns true if GetCustomCursor should be used to allocate a platform
-  // specific cursor object.  Otherwise GetCursor should be used.
-  bool IsCustom() const;
-
-  // Returns true if the current cursor object contains the same cursor as the
-  // cursor object passed in. If the current cursor is a custom cursor, we also
-  // compare the bitmaps to verify whether they are equal.
-  bool IsEqual(const WebCursor& other) const;
-
-  // Returns a native cursor representing the current WebCursor instance.
-  gfx::NativeCursor GetNativeCursor();
-
-#if defined(OS_WIN)
-  // Initialize this from the given Windows cursor. The caller must ensure that
-  // the HCURSOR remains valid by not invoking the DestroyCursor/DestroyIcon
-  // APIs on it.
-  void InitFromExternalCursor(HCURSOR handle);
-#endif
-
-#if defined(USE_AURA)
-  const ui::PlatformCursor GetPlatformCursor();
-
-  // Updates |device_scale_factor_| and |rotation_| based on |display|.
-  void SetDisplayInfo(const gfx::Display& display);
-
-#elif defined(OS_WIN)
-  // Returns a HCURSOR representing the current WebCursor instance.
-  // The ownership of the HCURSOR (does not apply to external cursors) remains
-  // with the WebCursor instance.
-  HCURSOR GetCursor(HINSTANCE module_handle);
-
-#elif defined(TOOLKIT_GTK)
-  // Return the stock GdkCursorType for this cursor, or GDK_CURSOR_IS_PIXMAP
-  // if it's a custom cursor. Return GDK_LAST_CURSOR to indicate that the cursor
-  // should be set to the system default.
-  // Returns an int so we don't need to include GDK headers in this header file.
-  int GetCursorType() const;
-
-  // Return a new GdkCursor* for this cursor.  Only valid if GetCursorType
-  // returns GDK_CURSOR_IS_PIXMAP.
-  GdkCursor* GetCustomCursor();
-#elif defined(OS_MACOSX)
-  // Initialize this from the given Cocoa NSCursor.
-  void InitFromNSCursor(NSCursor* cursor);
-#endif
-
- private:
-  // Copies the contents of the WebCursor instance passed in.
-  void Copy(const WebCursor& other);
-
-  // Cleans up the WebCursor instance.
-  void Clear();
-
-  // Platform specific initialization goes here.
-  void InitPlatformData();
-
-  // Platform specific Serialization / De-serialization
-  bool SerializePlatformData(Pickle* pickle) const;
-  bool DeserializePlatformData(PickleIterator* iter);
-
-  // Returns true if the platform data in the current cursor object
-  // matches that of the cursor passed in.
-  bool IsPlatformDataEqual(const WebCursor& other) const ;
-
-  // Copies platform specific data from the WebCursor instance passed in.
-  void CopyPlatformData(const WebCursor& other);
-
-  // Platform specific cleanup.
-  void CleanupPlatformData();
-
-  void SetCustomData(const SkBitmap& image);
-  void ImageFromCustomData(SkBitmap* image) const;
-
-  // Clamp the hotspot to the custom image's bounds, if this is a custom cursor.
-  void ClampHotspot();
-
-  // WebCore::PlatformCursor type.
-  int type_;
-
-  // Hotspot in cursor image in pixels.
-  gfx::Point hotspot_;
-
-  // Custom cursor data, as 32-bit RGBA.
-  // Platform-inspecific because it can be serialized.
-  gfx::Size custom_size_;  // In pixels.
-  float custom_scale_;
-  std::vector<char> custom_data_;
-
-#if defined(OS_WIN)
-  // An externally generated HCURSOR. We assume that it remains valid, i.e we
-  // don't attempt to copy the HCURSOR.
-  HCURSOR external_cursor_;
-#endif
-
-#if defined(USE_AURA) && defined(USE_X11)
-  // Only used for custom cursors.
-  ui::PlatformCursor platform_cursor_;
-  float device_scale_factor_;
-  gfx::Display::Rotation rotation_;
-#elif defined(OS_WIN)
-  // A custom cursor created from custom bitmap data by Webkit.
-  HCURSOR custom_cursor_;
-#elif defined(TOOLKIT_GTK)
-  // A custom cursor created that should be unref'ed from the destructor.
-  GdkCursor* unref_;
-#endif
-};
-
-#endif  // WEBKIT_COMMON_CURSORS_WEBCURSOR_H_