gecko-dev/widget/nsWidgetInitData.h

/* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef nsWidgetInitData_h__
#define nsWidgetInitData_h__

/**
 * Window types
 *
 * Don't alter previously encoded enum values - 3rd party apps may look at
 * these.
 */
enum nsWindowType {
  eWindowType_toplevel,           // default top level window
  eWindowType_dialog,             // top level window but usually handled differently
                                  // by the OS
  eWindowType_popup,              // used for combo boxes, etc
  eWindowType_child,              // child windows (contained inside a window on the
                                  // desktop (has no border))
  eWindowType_invisible,          // windows that are invisible or offscreen
  eWindowType_plugin,             // plugin window
  eWindowType_plugin_ipc_chrome,  // chrome side native widget for plugins (e10s)
  eWindowType_plugin_ipc_content, // content side puppet widget for plugins (e10s)
  eWindowType_sheet,              // MacOSX sheet (special dialog class)
};

/**
 * Popup types
 *
 * For eWindowType_popup
 */
enum nsPopupType {
  ePopupTypePanel,
  ePopupTypeMenu,
  ePopupTypeTooltip,
  ePopupTypeAny      = 0xF000 // used only to pass to
                              // nsXULPopupManager::GetTopPopup
};

/**
 * Popup levels specify the window ordering behaviour.
 */
enum nsPopupLevel {
  // the popup appears just above its parent and maintains its position
  // relative to the parent
  ePopupLevelParent,
  // the popup is a floating popup used for tool palettes. A parent window
  // must be specified, but a platform implementation need not use this.
  // On Windows, floating is generally equivalent to parent. On Mac, floating
  // puts the popup at toplevel, but it will hide when the application is deactivated
  ePopupLevelFloating,
  // the popup appears on top of other windows, including those of other applications
  ePopupLevelTop
};

/**
 * Border styles
 */
enum nsBorderStyle {
  eBorderStyle_none     = 0,      // no border, titlebar, etc.. opposite of
                                  // all
  eBorderStyle_all      = 1 << 0, // all window decorations
  eBorderStyle_border   = 1 << 1, // enables the border on the window. these
                                  // are only for decoration and are not
                                  // resize handles
  eBorderStyle_resizeh  = 1 << 2, // enables the resize handles for the
                                  // window. if this is set, border is
                                  // implied to also be set
  eBorderStyle_title    = 1 << 3, // enables the titlebar for the window
  eBorderStyle_menu     = 1 << 4, // enables the window menu button on the
                                  // title bar. this being on should force
                                  // the title bar to display
  eBorderStyle_minimize = 1 << 5, // enables the minimize button so the user
                                  // can minimize the window. turned off for
                                  // tranient windows since they can not be
                                  // minimized separate from their parent
  eBorderStyle_maximize = 1 << 6, // enables the maxmize button so the user
                                  // can maximize the window
  eBorderStyle_close    = 1 << 7, // show the close button
  eBorderStyle_default  = -1      // whatever the OS wants... i.e. don't do
                                  // anything
};

/**
 * Basic struct for widget initialization data.
 * @see Create member function of nsIWidget
 */

struct nsWidgetInitData {
  nsWidgetInitData() :
      mWindowType(eWindowType_child),
      mBorderStyle(eBorderStyle_default),
      mPopupHint(ePopupTypePanel),
      mPopupLevel(ePopupLevelTop),
      mScreenId(0),
      clipChildren(false),
      clipSiblings(false),
      mDropShadow(false),
      mListenForResizes(false),
      mUnicode(true),
      mRTL(false),
      mNoAutoHide(false),
      mIsDragPopup(false),
      mIsAnimationSuppressed(false),
      mSupportTranslucency(false),
      mMouseTransparent(false),
      mHasRemoteContent(false)
  {
  }

  nsWindowType  mWindowType;
  nsBorderStyle mBorderStyle;
  nsPopupType   mPopupHint;
  nsPopupLevel  mPopupLevel;
  // B2G multi-screen support. Screen ID is for differentiating screens of
  // windows, and due to the hardware limitation, it is platform-specific for
  // now, which align with the value of display type defined in HWC.
  uint32_t      mScreenId;
  // when painting exclude area occupied by child windows and sibling windows
  bool          clipChildren, clipSiblings, mDropShadow;
  bool          mListenForResizes;
  bool          mUnicode;
  bool          mRTL;
  bool          mNoAutoHide; // true for noautohide panels
  bool          mIsDragPopup;  // true for drag feedback panels
  // true if window creation animation is suppressed, e.g. for session restore
  bool          mIsAnimationSuppressed;
  // true if the window should support an alpha channel, if available.
  bool          mSupportTranslucency;
  // true if the window should be transparent to mouse events. Currently this is
  // only valid for eWindowType_popup widgets
  bool          mMouseTransparent;
  bool          mHasRemoteContent;
};

#endif // nsWidgetInitData_h__