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/* Module : MAPPIN.CPP Purpose: Implementation for an MFC class to draw map pins ala AutoRoute Express Created: PJN / 12-08-1998 History: PJN / 10-09-1998 Fixed a small redraw glitch in SetIcon Copyright (c) 1998 by PJ Naughter. All rights reserved. */ //////////////// Includes //////////////////////////////////////////// #include "stdafx.h" #include "MapPin.h" //////////////// Defines ///////////////////////////////////////////// #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif //////////////// Implementation ////////////////////////////////////// BEGIN_MESSAGE_MAP(CMapPin, CWnd) //{{AFX_MSG_MAP(CMapPin) ON_WM_PAINT() ON_WM_CONTEXTMENU() ON_WM_LBUTTONDOWN() ON_WM_LBUTTONUP() ON_WM_MOUSEMOVE() ON_WM_TIMER() //}}AFX_MSG_MAP ON_MESSAGE(WM_SETTEXT, OnSetText) END_MESSAGE_MAP() CMapPin::CMapPin() { m_hIcon = NULL; m_nIconHeight = 0; m_nIconWidth = 0; m_bCaptured = FALSE; m_bAllowDrag = TRUE; } CMapPin::~CMapPin() { //Free the icon resource that we have loaded if (m_hIcon) { DestroyIcon(m_hIcon); m_hIcon = NULL; } } BOOL CMapPin::Create(LPCTSTR lpszTooltipText, DWORD dwStyle, const CPoint& p, CWnd* pParentWnd, UINT nID) { ASSERT(m_hIcon != NULL); //Icon must be setup before calling this function //Work out the size to create the window based on the icon size CRect r(p.x, p.y, p.x + m_nIconWidth, p.y + m_nIconHeight); //Let the parent do its thing BOOL bSuccess = CWnd::Create(NULL, lpszTooltipText, dwStyle, r, pParentWnd, nID); //Fire off a timer to setup the tooltip for the control m_nTimerID = SetTimer(1, 0, NULL); return bSuccess; } BOOL CMapPin::SetIcon(HINSTANCE hModule, UINT nIDResource, BOOL bSmallIcon) { return SetIcon(hModule, MAKEINTRESOURCE(nIDResource), bSmallIcon); } BOOL CMapPin::SetIcon(HINSTANCE hModule, LPCTSTR lpszResourceName, BOOL bSmallIcon) { //Release the old icon we may have if (m_hIcon != NULL) { DestroyIcon(m_hIcon); m_hIcon = NULL; } //Work out the metrics of the icon we are about to load if (bSmallIcon) { m_nIconWidth = GetSystemMetrics(SM_CXSMICON); m_nIconHeight = GetSystemMetrics(SM_CYSMICON); } else { m_nIconWidth = GetSystemMetrics(SM_CXICON); m_nIconHeight = GetSystemMetrics(SM_CYICON); } //Load up the new icon if (bSmallIcon) m_hIcon = (HICON) LoadImage(hModule, lpszResourceName, IMAGE_ICON, m_nIconWidth, m_nIconHeight, LR_DEFAULTCOLOR); else m_hIcon = LoadIcon(hModule, lpszResourceName); //With an icon change, force a repaint if (GetSafeHwnd()) { //First the parent CRect r; GetClientRect(&r); ClientToScreen(&r); CWnd* pParent = GetParent(); pParent->ScreenToClient(&r); pParent->InvalidateRect(r, FALSE); //Now this window Invalidate(); } //return success indicator return (m_hIcon != NULL); } void CMapPin::SetPopupMenu(LPCTSTR lpszResourceName) { m_lpszMenuResourceName = lpszResourceName; } void CMapPin::SetPopupMenu(UINT nIDResource) { m_lpszMenuResourceName = MAKEINTRESOURCE(nIDResource); } HICON CMapPin::GetIcon() const { return m_hIcon; } void CMapPin::OnPaint() { CPaintDC dc(this); ASSERT(m_hIcon != NULL); //You forget to setup an icon //Just draw the icon ::DrawIconEx(dc.GetSafeHdc(), 0, 0, m_hIcon, m_nIconWidth, m_nIconHeight, 0, NULL, DI_NORMAL); } void CMapPin::OnContextMenu(CWnd* /*pWnd*/, CPoint point) { //Load up the specified menu CMenu menu; VERIFY(menu.LoadMenu(m_lpszMenuResourceName)); //Pull out the first popup menu from it CMenu* pPopup = menu.GetSubMenu(0); ASSERT(pPopup != NULL); //Owner is the first non child window in the hierarchy above this window CWnd* pWndPopupOwner = this; while (pWndPopupOwner->GetStyle() & WS_CHILD) pWndPopupOwner = pWndPopupOwner->GetParent(); //Track the menu pPopup->TrackPopupMenu(TPM_LEFTALIGN | TPM_RIGHTBUTTON, point.x, point.y, pWndPopupOwner); } void CMapPin::OnLButtonDown(UINT nFlags, CPoint point) { if (m_bAllowDrag) { SetCapture(); m_bCaptured = TRUE; m_nDragOffset = point; } //Let the parent do its thing CWnd::OnLButtonDown(nFlags, point); } void CMapPin::OnLButtonUp(UINT nFlags, CPoint point) { ReleaseCapture(); m_bCaptured = FALSE; //let the parent do its thing CWnd::OnLButtonUp(nFlags, point); } void CMapPin::OnMouseMove(UINT nFlags, CPoint point) { if (m_bCaptured) { CWnd* pParent = GetParent(); //Retrieve the old postion (in parent client coordinates) CRect oldPos; GetClientRect(&oldPos); ClientToScreen(oldPos); pParent->ScreenToClient(&oldPos); //Work out the new position (in parent client coordinates) CRect newPos(point.x - m_nDragOffset.x, point.y - m_nDragOffset.y, point.x - m_nDragOffset.x + m_nIconWidth, point.y - m_nDragOffset.y + m_nIconHeight); ClientToScreen(&newPos); pParent->ScreenToClient(&newPos); //Only move the pin if it is inside the client rect of the parent window CRect clientRect; pParent->GetClientRect(&clientRect); if (newPos.left >= clientRect.left && newPos.top >= clientRect.top && newPos.right < clientRect.right && newPos.bottom < clientRect.bottom) { MoveWindow(newPos, FALSE); pParent->InvalidateRect(oldPos, FALSE); Invalidate(TRUE); CWnd::OnMouseMove(nFlags, point); //Let the parent do its thing } } else CWnd::OnMouseMove(nFlags, point); //Let the parent do its thing } void CMapPin::SetAllowDrag(BOOL bAllowDrag) { m_bAllowDrag = bAllowDrag; } BOOL CMapPin::GetAllowDrag() const { return m_bAllowDrag; } BOOL CMapPin::PreTranslateMessage(MSG* pMsg) { //Relay the message to the tooltip if its around if (IsWindow(m_ctrlToolTip.GetSafeHwnd())) m_ctrlToolTip.RelayEvent(pMsg); return CWnd::PreTranslateMessage(pMsg); } void CMapPin::OnTimer(UINT nIDEvent) { if (nIDEvent == m_nTimerID) { //Timer is being used as a once off, so kill it KillTimer(m_nTimerID); //Create the tooltip for the control BOOL bSuccess = m_ctrlToolTip.Create(GetParent()); m_ctrlToolTip.Activate(TRUE); CString sCaption; GetWindowText(sCaption); bSuccess = m_ctrlToolTip.AddTool(this, sCaption); } CWnd::OnTimer(nIDEvent); } LRESULT CMapPin::OnSetText(WPARAM /*wParam*/, LPARAM lParam) { //Update the tooltip text whenever the caption changes LPCTSTR pszText = (LPCTSTR) lParam; m_ctrlToolTip.UpdateTipText(pszText, this); return Default(); }