341 lines
8.5 KiB
C++
341 lines
8.5 KiB
C++
#include "stdafx.h"
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#include "CDrawingBoard.h"
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#include "afxdialogex.h"
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#include "Resource.h"
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IMPLEMENT_DYNAMIC(CDrawingBoard, CDialog)
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CDrawingBoard::CDrawingBoard(CWnd* pParent, Server* IOCPServer, CONTEXT_OBJECT* ContextObject)
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: DialogBase(IDD_DRAWING_BOARD, pParent, IOCPServer, ContextObject, IDI_ICON_DRAWING),
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m_bDrawing(false)
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{
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m_bTopMost = true;
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m_bTransport = true;
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m_bMoving = false;
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m_bSizing = false;
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m_pInputEdit = nullptr;
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}
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CDrawingBoard::~CDrawingBoard()
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{
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if (m_pInputEdit != nullptr) {
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m_pInputEdit->DestroyWindow();
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delete m_pInputEdit;
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m_pInputEdit = nullptr;
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}
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if (m_font.GetSafeHandle())
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m_font.DeleteObject();
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if (m_pen.GetSafeHandle())
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m_pen.DeleteObject();
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}
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void CDrawingBoard::DoDataExchange(CDataExchange* pDX)
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{
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CDialog::DoDataExchange(pDX);
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}
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BEGIN_MESSAGE_MAP(CDrawingBoard, CDialog)
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ON_WM_CLOSE()
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ON_WM_SIZE()
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ON_WM_PAINT()
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ON_WM_LBUTTONDOWN()
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ON_WM_MOUSEMOVE()
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ON_WM_LBUTTONUP()
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ON_WM_WINDOWPOSCHANGED()
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ON_WM_RBUTTONDOWN()
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ON_COMMAND(ID_DRAWING_TOPMOST, &CDrawingBoard::OnDrawingTopmost)
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ON_COMMAND(ID_DRAWING_TRANSPORT, &CDrawingBoard::OnDrawingTransport)
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ON_COMMAND(ID_DRAWING_MOVE, &CDrawingBoard::OnDrawingMove)
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ON_COMMAND(ID_DRAWING_SIZE, &CDrawingBoard::OnDrawingSize)
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ON_COMMAND(IDM_CLEAR_DRAWING, &CDrawingBoard::OnDrawingClear)
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ON_COMMAND(ID_DRAWING_TEXT, &CDrawingBoard::OnDrawingText)
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END_MESSAGE_MAP()
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void CDrawingBoard::OnReceiveComplete()
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{
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// 接收时处理逻辑（暂空）
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}
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void CDrawingBoard::OnClose()
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{
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CancelIO();
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if (IsProcessing()) {
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ShowWindow(SW_HIDE);
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return;
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}
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DialogBase::OnClose();
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}
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void CDrawingBoard::OnPaint()
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{
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CPaintDC dc(this);
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CPen* pOldPen = dc.SelectObject(&m_pen);
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for (const auto& path : m_paths)
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{
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if (path.size() < 2) continue;
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dc.MoveTo(path[0]);
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for (size_t i = 1; i < path.size(); ++i)
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dc.LineTo(path[i]);
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}
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if (m_bDrawing && m_currentPath.size() >= 2)
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{
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dc.MoveTo(m_currentPath[0]);
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for (size_t i = 1; i < m_currentPath.size(); ++i)
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dc.LineTo(m_currentPath[i]);
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}
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CFont* pOldFont = dc.SelectObject(&m_font);
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dc.SetTextColor(RGB(0, 0, 0));
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dc.SetBkMode(TRANSPARENT);
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for (const auto& entry : m_Texts)
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dc.TextOut(entry.first.x, entry.first.y, entry.second);
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dc.SelectObject(pOldFont);
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dc.SelectObject(pOldPen);
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}
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void CDrawingBoard::OnLButtonDown(UINT nFlags, CPoint point)
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{
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m_bDrawing = true;
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m_currentPath.clear();
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m_currentPath.push_back(point);
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SetCapture();
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}
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void CDrawingBoard::OnMouseMove(UINT nFlags, CPoint point)
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{
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if (m_bDrawing)
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{
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m_currentPath.push_back(point);
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Invalidate(FALSE);
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// 发送当前点
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BYTE pkg[1 + sizeof(POINT)] = { CMD_DRAW_POINT };
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memcpy(pkg + 1, &point, sizeof(POINT));
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m_ContextObject->Send2Client((BYTE*)pkg, sizeof(pkg));
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}
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}
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void CDrawingBoard::OnLButtonUp(UINT nFlags, CPoint point)
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{
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if (m_bDrawing)
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{
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m_bDrawing = false;
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m_currentPath.push_back(point);
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ReleaseCapture();
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m_paths.push_back(m_currentPath);
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Invalidate();
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// 发送结束命令，表示当前路径完成
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BYTE endCmd = CMD_DRAW_END;
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m_ContextObject->Send2Client(&endCmd, 1);
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}
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}
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void CDrawingBoard::OnWindowPosChanged(WINDOWPOS* lpwndpos)
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{
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CDialog::OnWindowPosChanged(lpwndpos);
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if (!m_bMoving) return;
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CRect rect;
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GetWindowRect(&rect); // 获取当前窗口屏幕位置
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BYTE pkg[1 + sizeof(CRect)] = { CMD_MOVEWINDOW };
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if (!m_bSizing) {
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rect.right = rect.left;
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rect.bottom = rect.top;
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}
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memcpy(pkg + 1, &rect, sizeof(CRect));
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m_ContextObject->Send2Client((BYTE*)pkg, sizeof(pkg));
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}
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void CDrawingBoard::OnSize(UINT nType, int cx, int cy)
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{
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CDialog::OnSize(nType, cx, cy);
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if (!m_bSizing) return;
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// 发送新的窗口尺寸到客户端
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int sizeData[2] = { cx, cy };
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BYTE pkg[sizeof(sizeData) + 1] = { CMD_SET_SIZE };
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memcpy(pkg + 1, &sizeData, sizeof(sizeData));
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m_ContextObject->Send2Client((PBYTE)pkg, sizeof(pkg));
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}
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void CDrawingBoard::OnDrawingTopmost()
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{
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m_bTopMost = !m_bTopMost;
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BYTE cmd[2] = { CMD_TOPMOST, m_bTopMost };
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m_ContextObject->Send2Client((PBYTE)cmd, sizeof(cmd));
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HMENU hMenu = ::GetMenu(this->GetSafeHwnd());
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int n = m_bTopMost ? MF_CHECKED : MF_UNCHECKED;
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::CheckMenuItem(hMenu, ID_DRAWING_TOPMOST, MF_BYCOMMAND | n);
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}
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void CDrawingBoard::OnDrawingTransport()
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{
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m_bTransport = !m_bTransport;
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BYTE cmd[2] = { CMD_TRANSPORT, m_bTransport ? 150 : 255 };
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m_ContextObject->Send2Client((PBYTE)cmd, sizeof(cmd));
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HMENU hMenu = ::GetMenu(this->GetSafeHwnd());
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int n = m_bTransport ? MF_CHECKED : MF_UNCHECKED;
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::CheckMenuItem(hMenu, ID_DRAWING_TRANSPORT, MF_BYCOMMAND | n);
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}
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void CDrawingBoard::OnDrawingMove()
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{
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m_bMoving = !m_bMoving;
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HMENU hMenu = ::GetMenu(this->GetSafeHwnd());
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int cmd = m_bMoving ? MF_CHECKED : MF_UNCHECKED;
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::CheckMenuItem(hMenu, ID_DRAWING_MOVE, MF_BYCOMMAND | cmd);
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}
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void CDrawingBoard::OnDrawingSize()
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{
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m_bSizing = !m_bSizing;
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HMENU hMenu = ::GetMenu(this->GetSafeHwnd());
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int cmd = m_bSizing ? MF_CHECKED : MF_UNCHECKED;
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::CheckMenuItem(hMenu, ID_DRAWING_SIZE, MF_BYCOMMAND | cmd);
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}
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BOOL CDrawingBoard::OnInitDialog()
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{
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DialogBase::OnInitDialog();
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SetIcon(m_hIcon, TRUE);
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SetIcon(m_hIcon, FALSE);
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CString str;
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str.Format("%s - 画板演示", m_IPAddress);
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SetWindowText(str);
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m_font.CreateFont(
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20, 0, 0, 0, FW_NORMAL, FALSE, FALSE, FALSE,
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DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
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DEFAULT_QUALITY, DEFAULT_PITCH | FF_SWISS, _T("Arial"));
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m_pen.CreatePen(PS_SOLID, 2, RGB(0, 0, 0));
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HMENU hMenu = ::GetMenu(this->GetSafeHwnd());
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::CheckMenuItem(hMenu, ID_DRAWING_TOPMOST, MF_BYCOMMAND | MF_CHECKED);
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::CheckMenuItem(hMenu, ID_DRAWING_TRANSPORT, MF_BYCOMMAND | MF_CHECKED);
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return TRUE;
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}
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void CDrawingBoard::OnDrawingClear()
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{
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m_paths.clear();
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m_currentPath.clear();
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m_Texts.clear();
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BYTE cmd[2] = { CMD_DRAW_CLEAR, 0 };
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m_ContextObject->Send2Client((PBYTE)cmd, sizeof(cmd));
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if (m_hWnd && IsWindow(m_hWnd))
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::InvalidateRect(m_hWnd, NULL, TRUE); // 重绘整个窗口，清除痕迹
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}
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void CDrawingBoard::OnRButtonDown(UINT nFlags, CPoint point)
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{
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m_RightClickPos = point; // 记录鼠标点
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ClientToScreen(&m_RightClickPos); // 变为屏幕坐标
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CMenu menu;
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menu.LoadMenu(IDR_MENU_POPUP);
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CMenu* pSubMenu = menu.GetSubMenu(0);
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if (pSubMenu)
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pSubMenu->TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON, m_RightClickPos.x, m_RightClickPos.y, this);
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CDialog::OnRButtonDown(nFlags, point);
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}
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void CDrawingBoard::OnDrawingText()
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{
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if (m_pInputEdit != nullptr) {
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m_pInputEdit->DestroyWindow();
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delete m_pInputEdit;
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m_pInputEdit = nullptr;
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}
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CPoint ptClient = m_RightClickPos;
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ScreenToClient(&ptClient);
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m_pInputEdit = new CEdit();
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m_pInputEdit->Create(WS_CHILD | WS_VISIBLE | WS_BORDER | ES_AUTOHSCROLL,
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CRect(ptClient.x, ptClient.y, ptClient.x + 200, ptClient.y + 25),
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this, 1234); // 控件 ID 可自定
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m_pInputEdit->SetFocus();
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}
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BOOL CDrawingBoard::PreTranslateMessage(MSG* pMsg)
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{
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if (m_pInputEdit && pMsg->hwnd == m_pInputEdit->m_hWnd)
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{
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if (pMsg->message == WM_KEYDOWN && pMsg->wParam == VK_RETURN)
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{
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CString strText;
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m_pInputEdit->GetWindowText(strText);
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// TODO: 将文字位置和内容加入列表并触发绘图
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if (!strText.IsEmpty()) {
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CPoint ptClient = m_RightClickPos;
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ScreenToClient(&ptClient);
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m_Texts.push_back(std::make_pair(ptClient, strText));
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SendTextsToRemote(ptClient, strText);
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}
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m_pInputEdit->DestroyWindow();
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delete m_pInputEdit;
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m_pInputEdit = nullptr;
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return TRUE; // 吞掉回车
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}
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}
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return CDialog::PreTranslateMessage(pMsg);
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}
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void CDrawingBoard::SendTextsToRemote(const CPoint& pt, const CString& text)
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{
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if (text.IsEmpty()) return;
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// 1. 转换为 UTF-8
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// CString 是 TCHAR 类型，若项目是多字节字符集，则需先转为宽字符
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#ifdef _UNICODE
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LPCWSTR lpWideStr = text;
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#else
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// 从 ANSI 转为宽字符
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int wideLen = MultiByteToWideChar(CP_ACP, 0, text, -1, NULL, 0);
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std::wstring wideStr(wideLen, 0);
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MultiByteToWideChar(CP_ACP, 0, text, -1, &wideStr[0], wideLen);
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LPCWSTR lpWideStr = wideStr.c_str();
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#endif
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int utf8Len = WideCharToMultiByte(CP_UTF8, 0, lpWideStr, -1, NULL, 0, NULL, NULL);
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if (utf8Len <= 1) return; // 空或失败
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std::vector<char> utf8Text(utf8Len - 1); // 去掉末尾的 \0
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WideCharToMultiByte(CP_UTF8, 0, lpWideStr, -1, utf8Text.data(), utf8Len - 1, NULL, NULL);
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// 2. 构造发送 buffer
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std::vector<char> buffer;
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buffer.push_back(CMD_DRAW_TEXT); // 自定义命令码
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buffer.insert(buffer.end(), (char*)&pt, (char*)&pt + sizeof(CPoint));
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buffer.insert(buffer.end(), utf8Text.begin(), utf8Text.end());
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// 3. 发送
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m_ContextObject->Send2Client((LPBYTE)buffer.data(), (ULONG)buffer.size());
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}
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