Issue 1109 - Support notifications

src/engine/NotificationWindow.h

+#pragma once
+#include <atlbase.h>
+#include <atlwin.h>
+#include <atlctl.h>
+#include <atlimage.h>
+#include <AdblockPlus/JsValue.h>
+#include <AdblockPlus/Notification.h>
+#include <functional>
+#include <MsHtmdid.h>
+
+class IconStaticControl : public ATL::CWindow
+{
+public:
+  explicit IconStaticControl(HWND hWnd = nullptr) : ATL::CWindow(hWnd)
+  { }
+
+  IconStaticControl& operator=(HWND hWnd)
+  {
+    m_hWnd = hWnd;
+    return *this;
+  }
+
+  HWND Create(HWND hWndParent, ATL::_U_RECT rect = nullptr, LPCTSTR szWindowName = nullptr,
+      DWORD dwStyle = 0, DWORD dwExStyle = 0,
+      ATL::_U_MENUorID MenuOrID = nullptr, LPVOID lpCreateParam = nullptr)
+  {
+    return ATL::CWindow::Create(GetWndClassName(), hWndParent, rect.m_lpRect, szWindowName, dwStyle, dwExStyle, MenuOrID.m_hMenu, lpCreateParam);
+  }
+
+  static wchar_t* GetWndClassName()
+  {
+    return L"STATIC";
+  }
+
+  void SetBitmap(HBITMAP hBitmap)
+  {
+    ATLASSERT(::IsWindow(m_hWnd));
+    ::SendMessage(m_hWnd, STM_SETIMAGE, IMAGE_BITMAP, reinterpret_cast<LPARAM>(hBitmap));
+  }
+};
+
+template<typename T>
+class ScopedObjectHandle
+{
+public:
+  explicit ScopedObjectHandle(T handle = nullptr) : m_handle(handle)
+  { }
+
+  ~ScopedObjectHandle()
+  {
+    if(m_handle != nullptr)
+    {
+      ::DeleteObject(m_handle);
+      m_handle = nullptr;
+    }
+  }
+
+  ScopedObjectHandle& operator=(T handle)
+  {
+    if(m_handle != nullptr && m_handle != handle)
+      ::DeleteObject(m_handle);
+    m_handle = handle;
+    return *this;
+  }
+
+  T Detach()
+  {
+    T retValue = m_handle;
+    m_handle = nullptr;
+    return retValue;
+  }
+
+  operator T()
+  {
+    return m_handle;
+  }
+
+  operator bool() const
+  {
+    return m_handle == nullptr;
+  }
+protected:
+  T m_handle;
+private:
+  ScopedObjectHandle(const ScopedObjectHandle&);
+  ScopedObjectHandle& operator=(const ScopedObjectHandle&);
+};
+
+class CFont : public ScopedObjectHandle<HFONT>
+{
+public:
+  explicit CFont(HFONT hFont = nullptr) : ScopedObjectHandle(hFont)
+  {
+  }
+
+  void CreateFontIndirect(const LOGFONT* logFontArg, uint32_t dpi)
+  {
+    ATLASSERT(m_handle == nullptr);
+    LOGFONT logFont = *logFontArg;
+    logFont.lfHeight = -MulDiv(dpi, logFont.lfHeight, 72);

[Oleksandr, 2015/07/22 09:45:36]

I really don't see us going over the max int size with dpi * logFont.lfHeight
multiplication here. What's the reasoning behind using MulDiv instead of regular
multiplication? Would be more readable without MulDiv, IMHO. Also, I think "*
(-1)" is a more readable negation. 

[sergei, 2015/07/23 14:17:58]

We don't need CFont I forgot to remove it, I used it at the very first version
for title.

+    m_handle = ::CreateFontIndirect(&logFont);
+  }
+};
+
+class CBrush : public ScopedObjectHandle<HBRUSH>
+{
+public:
+  explicit CBrush(HBRUSH brush = nullptr) : ScopedObjectHandle(brush)
+  {
+  }
+
+  void CreateSolidBrush(COLORREF crColor)
+  {
+    ATLASSERT(m_handle == nullptr);
+    m_handle = ::CreateSolidBrush(crColor);
+  }
+};
+
+class ScopedModule
+{
+public:
+  ScopedModule()
+    : m_hModule(nullptr)
+  {
+  }
+
+  bool Open(const wchar_t* fileName, int flags)
+  {
+    m_hModule = LoadLibraryEx(fileName, nullptr, flags);
+    return m_hModule != nullptr;
+  }
+  
+  ~ScopedModule()
+  {
+    if (m_hModule != nullptr)
+    {
+      FreeLibrary(m_hModule);
+      m_hModule = nullptr;
+    }
+  }
+  operator HMODULE()
+  {
+    return m_hModule;
+  }
+private:
+  ScopedModule(const ScopedModule&);
+  ScopedModule& operator=(const ScopedModule&);
+private:
+  HMODULE m_hModule;
+};
+
+class DpiAwareness {
+public:
+  DpiAwareness() : m_dpi(96)
+  {
+  }
+protected:
+  uint32_t DPIAware(uint32_t value) const {
+    return MulDiv(value, m_dpi, 96);
+  }
+  SIZE DPIAware(SIZE value) const {
+    return CSize(DPIAware(value.cx), DPIAware(value.cy));
+  }
+  RECT DPIAware(RECT value) const {
+    return CRect(DPIAware(value.left), DPIAware(value.top), DPIAware(value.right), DPIAware(value.bottom));
+  }
+  uint32_t m_dpi;
+};
+
+enum
+{
+  // ID of HTMLDocument ActiveX control, it's used for event binding.
+  kHTMLDocumentCtrlID = 101
+};
+
+class NotificationWindow : public ATL::CWindowImpl<NotificationWindow>
+  , ATL::IDispEventImpl<kHTMLDocumentCtrlID, NotificationWindow, &DIID_HTMLDocumentEvents2, &LIBID_MSHTML, 4, 0>
+  , protected DpiAwareness
+{
+public:
+  explicit NotificationWindow(const AdblockPlus::Notification& notification, const std::wstring& htmlFileDir);
+  ~NotificationWindow();
+  BEGIN_MSG_MAP(NotificationWindow)
+    if (uMsg == WM_CREATE)
+    {
+      SetMsgHandled(TRUE);
+      lResult = OnCreate(reinterpret_cast<CREATESTRUCT*>(lParam));
+      if(IsMsgHandled())
+        return TRUE;
+    }
+    MESSAGE_HANDLER(WM_LBUTTONUP, OnClick)
+    MESSAGE_HANDLER(WM_RBUTTONUP, OnClick)
+    MESSAGE_HANDLER(WM_CTLCOLORSTATIC, OnCtlColor)
+    if (uMsg == WM_SIZE)
+    {
+      SetMsgHandled(TRUE);
+      OnSize(static_cast<uint32_t>(wParam), CSize(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)));
+      lResult = 0;
+      if(IsMsgHandled())
+        return TRUE;
+    }
+    if (uMsg == WM_DESTROY)
+    {
+      SetMsgHandled(TRUE);
+      OnDestroy();
+      lResult = 0;
+      if(IsMsgHandled())
+        return TRUE;
+    }
+  END_MSG_MAP()
+
+  BEGIN_SINK_MAP(NotificationWindow)
+    SINK_ENTRY_EX(kHTMLDocumentCtrlID, DIID_HTMLDocumentEvents2, DISPID_HTMLDOCUMENTEVENTS2_ONCLICK, OnHTMLDocumentClick)
+    SINK_ENTRY_EX(kHTMLDocumentCtrlID, DIID_HTMLDocumentEvents2, DISPID_HTMLDOCUMENTEVENTS2_ONSELECTSTART, OnHTMLDocumentSelectStart)
+  END_SINK_MAP()
+
+  void SetOnClick(const std::function<void()>& callback)
+  {
+    m_onClickCallback = callback;
+  }
+  void SetOnLinkClicked(const std::function<void(const std::wstring& url)>& callback)
+  {
+    m_onLinkClickedCallback = callback;
+  }
+  void SetOnClose(const std::function<void()>& callback)
+  {
+    m_onCloseCallback = callback;
+  }
+private:
+  LRESULT OnCreate(const CREATESTRUCT* createStruct);
+  LRESULT OnCtlColor(UINT msg, WPARAM wParam, LPARAM lParam, BOOL& handled);
+  LRESULT OnClick(UINT msg, WPARAM wParam, LPARAM lParam, BOOL& handled);
+  void OnSize(uint32_t wParam, CSize size);
+  void OnDestroy();
+
+  void __stdcall OnHTMLDocumentClick(IHTMLEventObj* pEvtObj);
+  void __stdcall OnHTMLDocumentSelectStart(IHTMLEventObj* pEvtObj);
+
+  void LoadABPIcon();
+private:
+  std::wstring m_htmlPage;
+  CBrush m_bgColor;
+  ATL::CAxWindow m_axIE;
+  ATL::CImage m_iconImg;
+  IconStaticControl m_icon;
+  std::vector<std::wstring> m_links;
+  std::function<void()> m_onClickCallback;
+  std::function<void()> m_onCloseCallback;
+  std::function<void(const std::wstring& url)> m_onLinkClickedCallback;
+};
+
+typedef ATL::CWinTraits<WS_POPUP | WS_CLIPCHILDREN | WS_CLIPSIBLINGS, WS_EX_TOOLWINDOW | WS_EX_TOPMOST> NotificationBorderWindowStyles;
+class NotificationBorderWindow : public ATL::CWindowImpl<NotificationBorderWindow, ATL::CWindow, NotificationBorderWindowStyles>
+  , protected DpiAwareness
+{
+public:
+  DECLARE_WND_CLASS_EX(/*generate class name*/nullptr, CS_DROPSHADOW, WHITE_BRUSH);
+  NotificationBorderWindow(const AdblockPlus::Notification& notification, const std::wstring& htmlFileDir);
+    BEGIN_MSG_MAP(NotificationWindow)
+    if (uMsg == WM_CREATE)
+    {
+      SetMsgHandled(TRUE);
+      lResult = OnCreate(reinterpret_cast<CREATESTRUCT*>(lParam));
+      if(IsMsgHandled())
+        return TRUE;
+    }
+    MESSAGE_HANDLER(WM_LBUTTONUP, OnClick)
+    MESSAGE_HANDLER(WM_RBUTTONUP, OnClick)
+    if (uMsg == WM_SIZE)
+    {
+      SetMsgHandled(TRUE);
+      OnSize(static_cast<uint32_t>(wParam), CSize(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)));
+      lResult = 0;
+      if(IsMsgHandled())
+        return TRUE;
+    }
+  END_MSG_MAP()
+  void SetOnDestroyed(const std::function<void()>& callback)
+  {
+    m_onDestroyedCallback = callback;
+  }
+  void SetOnLinkClicked(const std::function<void(const std::wstring& url)>& callback)
+  {
+    m_content.SetOnLinkClicked(callback);
+  }
+private:
+  LRESULT OnCreate(const CREATESTRUCT* createStruct);
+  void OnSize(uint32_t wParam, CSize size);
+  LRESULT OnClick(UINT msg, WPARAM wParam, LPARAM lParam, BOOL& handled);
+
+  void OnFinalMessage(HWND) override;
+
+  // returns {windowX, windowY} of top left corner on the monitor
+  POINT GetWindowCoordinates();
+private:
+  // m_content is used a holder of all children and we need it to have a border.

[Oleksandr, 2015/07/22 09:45:36]

NIT: "used AS a holder"

+  // It seems the most correct way to have a border to set WS_POPUPWINDOW style
+  // and paint the border in WM_NCPAINT but it simply does not work here.
+  NotificationWindow m_content;
+  std::function<void()> m_onDestroyedCallback;
+};