DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135
/* -*- Mode: C++; tab-width: 4; 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 nsWindowBase_h_
#define nsWindowBase_h_

#include "mozilla/EventForwards.h"
#include "nsBaseWidget.h"
#include "nsClassHashtable.h"

#include <windows.h>
#include "touchinjection_sdk80.h"

/*
 * nsWindowBase - Base class of common methods other classes need to access
 * in both win32 and winrt window classes.
 */
class nsWindowBase : public nsBaseWidget
{
public:
  /*
   * Return the HWND or null for this widget.
   */
  virtual HWND GetWindowHandle() final {
    return static_cast<HWND>(GetNativeData(NS_NATIVE_WINDOW));
  }

  /*
   * Return the parent window, if it exists.
   */
  virtual nsWindowBase* GetParentWindowBase(bool aIncludeOwner) = 0;

  /*
   * Return true if this is a top level widget.
   */
  virtual bool IsTopLevelWidget() = 0;

  /*
   * Init a standard gecko event for this widget.
   * @param aEvent the event to initialize.
   * @param aPoint message position in physical coordinates.
   */
  virtual void InitEvent(mozilla::WidgetGUIEvent& aEvent,
                         nsIntPoint* aPoint = nullptr) = 0;

  /*
   * Dispatch a gecko event for this widget.
   * Returns true if it's consumed.  Otherwise, false.
   */
  virtual bool DispatchWindowEvent(mozilla::WidgetGUIEvent* aEvent) = 0;

  /*
   * Dispatch a gecko keyboard event for this widget. This
   * is called by KeyboardLayout to dispatch gecko events.
   * Returns true if it's consumed.  Otherwise, false.
   */
  virtual bool DispatchKeyboardEvent(mozilla::WidgetKeyboardEvent* aEvent) = 0;

  /*
   * Dispatch a gecko wheel event for this widget. This
   * is called by ScrollHandler to dispatch gecko events.
   * Returns true if it's consumed.  Otherwise, false.
   */
  virtual bool DispatchWheelEvent(mozilla::WidgetWheelEvent* aEvent) = 0;

  /*
   * Dispatch a gecko content command event for this widget. This
   * is called by ScrollHandler to dispatch gecko events.
   * Returns true if it's consumed.  Otherwise, false.
   */
  virtual bool DispatchContentCommandEvent(mozilla::WidgetContentCommandEvent* aEvent) = 0;

  /*
   * Default dispatch of a plugin event.
   */
  virtual bool DispatchPluginEvent(const MSG& aMsg);

  /*
   * Returns true if a plugin has focus on this widget.  Otherwise, false.
   */
  virtual bool PluginHasFocus() const final
  {
    return (mInputContext.mIMEState.mEnabled == IMEState::PLUGIN);
  }

  /*
   * Touch input injection apis
   */
  virtual nsresult SynthesizeNativeTouchPoint(uint32_t aPointerId,
                                              TouchPointerState aPointerState,
                                              nsIntPoint aPointerScreenPoint,
                                              double aPointerPressure,
                                              uint32_t aPointerOrientation,
                                              nsIObserver* aObserver) override;
  virtual nsresult ClearNativeTouchSequence(nsIObserver* aObserver) override;

  /*
   * WM_APPCOMMAND common handler.
   * Sends events via NativeKey::HandleAppCommandMessage().
   */
  virtual bool HandleAppCommandMsg(const MSG& aAppCommandMsg,
                                   LRESULT *aRetValue);

protected:
  static bool InitTouchInjection();
  bool InjectTouchPoint(uint32_t aId, nsIntPoint& aPointerScreenPoint,
                        POINTER_FLAGS aFlags, uint32_t aPressure = 1024,
                        uint32_t aOrientation = 90);

  class PointerInfo
  {
  public:
    PointerInfo(int32_t aPointerId, nsIntPoint& aPoint) :
      mPointerId(aPointerId),
      mPosition(aPoint)
    {
    }

    int32_t mPointerId;
    nsIntPoint mPosition;
  };

  static PLDHashOperator CancelTouchPoints(const unsigned int& aPointerId, nsAutoPtr<PointerInfo>& aInfo, void* aUserArg);

  nsClassHashtable<nsUint32HashKey, PointerInfo> mActivePointers;
  static bool sTouchInjectInitialized;
  static InjectTouchInputPtr sInjectTouchFuncPtr;

protected:
  InputContext mInputContext;
};

#endif // nsWindowBase_h_