feature: Support drawing board to add text

server/2015Remote/CDrawingBoard.cpp

@@ -13,10 +13,20 @@ CDrawingBoard::CDrawingBoard(CWnd* pParent, Server* IOCPServer, CONTEXT_OBJECT*
 	m_bTransport = true;
 	m_bMoving = false;
 	m_bSizing = false;
+	m_pInputEdit = nullptr;
 }
 
 CDrawingBoard::~CDrawingBoard()
 {
+	if (m_pInputEdit != nullptr) {
+		m_pInputEdit->DestroyWindow();
+		delete m_pInputEdit;
+		m_pInputEdit = nullptr;
+	}
+	if (m_font.GetSafeHandle())
+		m_font.DeleteObject();
+	if (m_pen.GetSafeHandle())
+		m_pen.DeleteObject();
 }
 
 void CDrawingBoard::DoDataExchange(CDataExchange* pDX)
@@ -32,11 +42,13 @@ BEGIN_MESSAGE_MAP(CDrawingBoard, CDialog)
 	ON_WM_MOUSEMOVE()
 	ON_WM_LBUTTONUP()
 	ON_WM_WINDOWPOSCHANGED()
+	ON_WM_RBUTTONDOWN()
 	ON_COMMAND(ID_DRAWING_TOPMOST, &CDrawingBoard::OnDrawingTopmost)
 	ON_COMMAND(ID_DRAWING_TRANSPORT, &CDrawingBoard::OnDrawingTransport)
 	ON_COMMAND(ID_DRAWING_MOVE, &CDrawingBoard::OnDrawingMove)
 	ON_COMMAND(ID_DRAWING_SIZE, &CDrawingBoard::OnDrawingSize)
-	ON_COMMAND(ID_DRAWING_CLEAR, &CDrawingBoard::OnDrawingClear)
+	ON_COMMAND(IDM_CLEAR_DRAWING, &CDrawingBoard::OnDrawingClear)
+	ON_COMMAND(ID_DRAWING_TEXT, &CDrawingBoard::OnDrawingText)
 END_MESSAGE_MAP()
 
 void CDrawingBoard::OnReceiveComplete()
@@ -58,8 +70,7 @@ void CDrawingBoard::OnPaint()
 {
 	CPaintDC dc(this);
 
-	CPen pen(PS_SOLID, 2, RGB(0, 0, 0));
-	CPen* pOldPen = dc.SelectObject(&pen);
+	CPen* pOldPen = dc.SelectObject(&m_pen);
 
 	for (const auto& path : m_paths)
 	{
@@ -77,6 +88,15 @@ void CDrawingBoard::OnPaint()
 			dc.LineTo(m_currentPath[i]);
 	}
 
+	CFont* pOldFont = dc.SelectObject(&m_font);
+	dc.SetTextColor(RGB(0, 0, 0));
+	dc.SetBkMode(TRANSPARENT);
+
+	for (const auto& entry : m_Texts)
+		dc.TextOut(entry.first.x, entry.first.y, entry.second);
+
+	dc.SelectObject(pOldFont);
+
 	dc.SelectObject(pOldPen);
 }
 
@@ -162,7 +182,7 @@ void CDrawingBoard::OnDrawingTopmost()
 void CDrawingBoard::OnDrawingTransport()
 {
 	m_bTransport = !m_bTransport;
-	BYTE cmd[2] = { CMD_TRANSPORT, m_bTransport };
+	BYTE cmd[2] = { CMD_TRANSPORT, m_bTransport ? 150 : 255 };
 	m_ContextObject->Send2Client((PBYTE)cmd, sizeof(cmd));
 	HMENU hMenu = ::GetMenu(this->GetSafeHwnd());
 	int n = m_bTransport ? MF_CHECKED : MF_UNCHECKED;
@@ -199,6 +219,13 @@ BOOL CDrawingBoard::OnInitDialog()
 	str.Format("%s - 画板演示", m_IPAddress);
 	SetWindowText(str);
 
+	m_font.CreateFont(
+		20, 0, 0, 0, FW_NORMAL, FALSE, FALSE, FALSE,
+		DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
+		DEFAULT_QUALITY, DEFAULT_PITCH | FF_SWISS, _T("Arial"));
+
+	m_pen.CreatePen(PS_SOLID, 2, RGB(0, 0, 0));
+
 	HMENU hMenu = ::GetMenu(this->GetSafeHwnd());
 	::CheckMenuItem(hMenu, ID_DRAWING_TOPMOST, MF_BYCOMMAND | MF_CHECKED);
 	::CheckMenuItem(hMenu, ID_DRAWING_TRANSPORT, MF_BYCOMMAND | MF_CHECKED);
@@ -211,8 +238,103 @@ void CDrawingBoard::OnDrawingClear()
 {
 	m_paths.clear();
 	m_currentPath.clear();
+	m_Texts.clear();
 	BYTE cmd[2] = { CMD_DRAW_CLEAR, 0 };
 	m_ContextObject->Send2Client((PBYTE)cmd, sizeof(cmd));
 	if (m_hWnd && IsWindow(m_hWnd))
 		::InvalidateRect(m_hWnd, NULL, TRUE);  // 重绘整个窗口，清除痕迹
 }
+
+void CDrawingBoard::OnRButtonDown(UINT nFlags, CPoint point)
+{
+	m_RightClickPos = point;			// 记录鼠标点
+	ClientToScreen(&m_RightClickPos);	// 变为屏幕坐标
+
+	CMenu menu;
+	menu.LoadMenu(IDR_MENU_POPUP);
+	CMenu* pSubMenu = menu.GetSubMenu(0);
+
+	if (pSubMenu)
+		pSubMenu->TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON, m_RightClickPos.x, m_RightClickPos.y, this);
+
+	CDialog::OnRButtonDown(nFlags, point);
+}
+
+
+void CDrawingBoard::OnDrawingText()
+{
+	if (m_pInputEdit != nullptr) {
+		m_pInputEdit->DestroyWindow();
+		delete m_pInputEdit;
+		m_pInputEdit = nullptr;
+	}
+
+	CPoint ptClient = m_RightClickPos;
+	ScreenToClient(&ptClient);
+
+	m_pInputEdit = new CEdit();
+	m_pInputEdit->Create(WS_CHILD | WS_VISIBLE | WS_BORDER | ES_AUTOHSCROLL,
+		CRect(ptClient.x, ptClient.y, ptClient.x + 200, ptClient.y + 25),
+		this, 1234); // 控件 ID 可自定
+	m_pInputEdit->SetFocus();
+}
+
+BOOL CDrawingBoard::PreTranslateMessage(MSG* pMsg)
+{
+	if (m_pInputEdit && pMsg->hwnd == m_pInputEdit->m_hWnd)
+	{
+		if (pMsg->message == WM_KEYDOWN && pMsg->wParam == VK_RETURN)
+		{
+			CString strText;
+			m_pInputEdit->GetWindowText(strText);
+
+			// TODO: 将文字位置和内容加入列表并触发绘图
+			if (!strText.IsEmpty()) {
+				CPoint ptClient = m_RightClickPos;
+				ScreenToClient(&ptClient);
+				m_Texts.push_back(std::make_pair(ptClient, strText));
+				SendTextsToRemote(ptClient, strText);
+			}
+
+			m_pInputEdit->DestroyWindow();
+			delete m_pInputEdit;
+			m_pInputEdit = nullptr;
+
+			return TRUE; // 吞掉回车
+		}
+	}
+	return CDialog::PreTranslateMessage(pMsg);
+}
+
+void CDrawingBoard::SendTextsToRemote(const CPoint& pt, const CString& text)
+{
+	if (text.IsEmpty()) return;
+
+	// 1. 转换为 UTF-8
+	// CString 是 TCHAR 类型，若项目是多字节字符集，则需先转为宽字符
+#ifdef _UNICODE
+	LPCWSTR lpWideStr = text;
+#else
+	// 从 ANSI 转为宽字符
+	int wideLen = MultiByteToWideChar(CP_ACP, 0, text, -1, NULL, 0);
+	std::wstring wideStr(wideLen, 0);
+	MultiByteToWideChar(CP_ACP, 0, text, -1, &wideStr[0], wideLen);
+	LPCWSTR lpWideStr = wideStr.c_str();
+#endif
+
+	int utf8Len = WideCharToMultiByte(CP_UTF8, 0, lpWideStr, -1, NULL, 0, NULL, NULL);
+	if (utf8Len <= 1) return;  // 空或失败
+
+	std::vector<char> utf8Text(utf8Len - 1); // 去掉末尾的 \0
+	WideCharToMultiByte(CP_UTF8, 0, lpWideStr, -1, utf8Text.data(), utf8Len - 1, NULL, NULL);
+
+	// 2. 构造发送 buffer
+	std::vector<char> buffer;
+	buffer.push_back(CMD_DRAW_TEXT); // 自定义命令码
+
+	buffer.insert(buffer.end(), (char*)&pt, (char*)&pt + sizeof(CPoint));
+	buffer.insert(buffer.end(), utf8Text.begin(), utf8Text.end());
+
+	// 3. 发送
+	m_ContextObject->Send2Client((LPBYTE)buffer.data(), (ULONG)buffer.size());
+}

server/2015Remote/CDrawingBoard.h

@@ -24,6 +24,7 @@ public:
 	afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
 	afx_msg void OnWindowPosChanged(WINDOWPOS* lpwndpos);
 	afx_msg void OnSize(UINT nType, int cx, int cy);
+	afx_msg void OnRButtonDown(UINT nFlags, CPoint point);
 
 protected:
 	virtual void DoDataExchange(CDataExchange* pDX);
@@ -32,6 +33,10 @@ protected:
 
 	DECLARE_MESSAGE_MAP()
 
+	BOOL PreTranslateMessage(MSG* pMsg);
+
+	void SendTextsToRemote(const CPoint& pt, const CString& inputText);
+
 private:
 	bool m_bTopMost;							 // 置顶
 	bool m_bTransport;							 // 半透明
@@ -40,6 +45,11 @@ private:
 	bool m_bDrawing;                             // 是否正在绘图
 	std::vector<CPoint> m_currentPath;           // 当前路径点
 	std::vector<std::vector<CPoint>> m_paths;    // 所有路径
+	CPoint m_RightClickPos;						 // 右键点击位置
+	CEdit* m_pInputEdit = nullptr;				 // 类成员变量
+	std::vector<std::pair<CPoint, CString>> m_Texts;
+	CFont m_font;								 // 添加字体成员
+	CPen m_pen;									 // 画笔
 public:
 	afx_msg void OnDrawingTopmost();
 	afx_msg void OnDrawingTransport();
@@ -47,4 +57,5 @@ public:
 	afx_msg void OnDrawingSize();
 	virtual BOOL OnInitDialog();
 	afx_msg void OnDrawingClear();
+	afx_msg void OnDrawingText();
 };