不规则形状按钮

// UniButton.cpp : implementation file // #include "stdafx.h" #include "UniBtn.h" #include "UniButton.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CUniButton CUniButton::CUniButton() { m_nColor = GetSysColor(COLOR_BTNFACE); m_sColor = m_nColor; m_hColor = m_nColor; m_dColor = m_nColor; m_nBorder = 1; m_lfEscapement = 0; m_pNormal = NULL; m_pSelected = NULL; m_pHover = NULL; m_pDisabled = NULL; m_hRgn = 0; m_bHover = false; m_bCapture = false; m_bMouseDown = false; m_bNeedBitmaps = true; } CUniButton::~CUniButton() { delete m_pNormal; delete m_pSelected; delete m_pHover; delete m_pDisabled; DeleteObject(m_hRgn); } BEGIN_MESSAGE_MAP(CUniButton, CButton) //{{AFX_MSG_MAP(CUniButton) ON_WM_ERASEBKGND() ON_WM_MOUSEMOVE() ON_WM_CREATE() ON_WM_LBUTTONDOWN() ON_WM_LBUTTONUP() //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CUniButton message handlers BOOL CUniButton::Create(LPCTSTR lpszCaption, DWORD dwStyle, const CPoint point, const HRGN hRgn, CWnd* pParentWnd, UINT nID) { DeleteObject(m_hRgn); m_hRgn = CreateRectRgn(0, 0, 31, 31); CRect box(0, 0, 0, 0); if (m_hRgn != 0) CombineRgn(m_hRgn, hRgn, 0, RGN_COPY); GetRgnBox(m_hRgn, &box); OffsetRgn(m_hRgn, -box.left, -box.top); GetRgnBox(m_hRgn, &box); m_CenterPoint = CPoint(box.left + box.Width() /2 , box.top + box.Height() /2); box.OffsetRect(point); return CButton::Create(lpszCaption, dwStyle, box, pParentWnd, nID); } BOOL CUniButton::Create(LPCTSTR lpszCaption, DWORD dwStyle, const CPoint point, const HRGN hRgn, CWnd* pParentWnd, UINT nID, COLORREF color) { m_sColor = color; m_hColor = color; return Create(lpszCaption, dwStyle, point, hRgn, pParentWnd, nID); } BOOL CUniButton::Create(LPCTSTR lpszCaption, DWORD dwStyle, const CPoint point, const HRGN hRgn, CWnd* pParentWnd, UINT nID, UINT nBorder, LONG lfEscapement, COLORREF nColor, COLORREF sColor, COLORREF hColor, COLORREF dColor) { m_lfEscapement = lfEscapement; return Create(lpszCaption, dwStyle, point, hRgn, pParentWnd, nID, nBorder, nColor, sColor, hColor, dColor); } BOOL CUniButton::Create(LPCTSTR lpszCaption, DWORD dwStyle, const CPoint point, const HRGN hRgn, CWnd* pParentWnd, UINT nID, UINT nBorder, COLORREF nColor, COLORREF sColor, COLORREF hColor, COLORREF dColor) { m_nBorder = nBorder; m_nColor = nColor; m_sColor = sColor; m_hColor = hColor; m_dColor = dColor; return Create(lpszCaption, dwStyle, point, hRgn, pParentWnd, nID); } void CUniButton::PreSubclassWindow() { ModifyStyle(0, BS_OWNERDRAW | BS_PUSHBUTTON); CButton::PreSubclassWindow(); } int CUniButton::OnCreate(LPCREATESTRUCT lpCreateStruct) { if (CButton::OnCreate(lpCreateStruct) == -1) return -1; m_bNeedBitmaps = true; SetWindowRgn(m_hRgn, TRUE); return 0; } void CUniButton::OnLButtonDown(UINT nFlags, CPoint point) { m_bMouseDown = true; if (!m_bCapture) { SetCapture(); m_bCapture = true; } CButton::OnLButtonDown(nFlags, point); } void CUniButton::OnLButtonUp(UINT nFlags, CPoint point) { CButton::OnLButtonUp(nFlags, point); m_bMouseDown = false; if (m_bCapture) { ReleaseCapture(); m_bCapture = false; } CheckHover(point); } void CUniButton::OnMouseMove(UINT nFlags, CPoint point) { if (!m_bMouseDown) CheckHover(point); CButton::OnMouseMove(nFlags, point); } void CUniButton::CheckHover(CPoint point) { if (HitTest(point)) { if (!m_bCapture) { SetCapture(); m_bCapture = true; } if (!m_bHover) { m_bHover = true; RedrawWindow(); } } else { if (m_bCapture) { ReleaseCapture(); m_bCapture = false; } m_bHover = false; RedrawWindow(); } } LRESULT CUniButton::DefWindowProc(UINT message, WPARAM wParam, LPARAM lParam) { if (message == WM_LBUTTONDBLCLK) message = WM_LBUTTONDOWN; return CButton::DefWindowProc(message, wParam, lParam); } BOOL CUniButton::HitTest(CPoint point) { BOOL result = FALSE; HRGN hRgn = CreateRectRgn(0, 0, 0, 0); GetWindowRgn(hRgn); CRect rgnRect; GetRgnBox(hRgn, &rgnRect); result = PtInRect(&rgnRect, point) && PtInRegion(hRgn, point.x, point.y); DeleteObject(hRgn); return result; } BOOL CUniButton::OnEraseBkgnd(CDC* pDC) { return TRUE; } void CUniButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct) { CDC* pDC = CDC::FromHandle(lpDrawItemStruct -> hDC); CRect rect; GetClientRect(rect); if (m_bNeedBitmaps) PrepareStateBitmaps(pDC, &rect); DrawButton(pDC, &rect, lpDrawItemStruct -> itemState); } void CUniButton::PrepareStateBitmaps(CDC * pDC, CRect * pRect) { CDC * pMemDC; pMemDC = new CDC; pMemDC -> CreateCompatibleDC(pDC); PrepareNormalState(pDC, pMemDC, pRect); PrepareSelectedState(pDC, pMemDC, pRect); PrepareHoverState(pDC, pMemDC, pRect); PrepareDisabledState(pDC, pMemDC, pRect); delete pMemDC; m_bNeedBitmaps = false; } void CUniButton::PrepareNormalState(CDC * pDC, CDC * pMemDC, CRect * pRect) { delete m_pNormal; m_pNormal = new CBitmap; PaintRgn(pDC, pMemDC, m_pNormal, m_nColor, pRect, true, false); } void CUniButton::PrepareSelectedState(CDC * pDC, CDC * pMemDC, CRect * pRect) { delete m_pSelected; m_pSelected = new CBitmap; PaintRgn(pDC, pMemDC, m_pSelected, m_sColor, pRect, true, true); } void CUniButton::PrepareHoverState(CDC * pDC, CDC * pMemDC, CRect * pRect) { delete m_pHover; m_pHover = new CBitmap; PaintRgn(pDC, pMemDC, m_pHover, m_hColor, pRect, true, false); } void CUniButton::PrepareDisabledState(CDC * pDC, CDC * pMemDC, CRect * pRect) { delete m_pDisabled; m_pDisabled = new CBitmap; PaintRgn(pDC, pMemDC, m_pDisabled, m_dColor, pRect, false, false); } void CUniButton::PaintRgn(CDC * pDC, CDC * pMemDC, CBitmap * pBitmap, COLORREF color, CRect * pRect, BOOL bEnabled, BOOL bSunken) { pBitmap -> CreateCompatibleBitmap(pDC, pRect -> Width(), pRect -> Height()); CBitmap * pOldBitmap = pMemDC -> SelectObject(pBitmap); HRGN hRgn = CreateRectRgn(0, 0, 0, 0); GetWindowRgn(hRgn); HBRUSH hBrush = CreateSolidBrush(color); pMemDC -> FillSolidRect(pRect, RGB(0, 0, 0)); FillRgn(pMemDC -> GetSafeHdc(), hRgn, hBrush); DeleteObject(hBrush); DrawButtonCaption(pMemDC -> GetSafeHdc(), pRect, bEnabled, bSunken); FrameRgn3D(pMemDC -> GetSafeHdc(), hRgn, bSunken); DeleteObject(hRgn); pMemDC -> SelectObject(pOldBitmap); } void CUniButton::DrawButtonCaption(HDC hDC, CRect * pRect, BOOL bEnabled, BOOL bSunken) { int nOldMode = SetBkMode(hDC, TRANSPARENT); CString text; GetWindowText(text); LOGFONT lf; GetParent() -> GetFont() -> GetLogFont(&lf); HFONT hFont = CreateFontIndirect(&lf); HFONT hOldFont = (HFONT) SelectObject(hDC, hFont); TEXTMETRIC tm; GetTextMetrics(hDC, &tm); CPoint p = CPoint(m_CenterPoint.x, m_CenterPoint.y + tm.tmHeight/ 2); if (bSunken) p.Offset(m_nBorder, m_nBorder); if (bEnabled) { SetTextColor(hDC, GetSysColor(COLOR_BTNTEXT)); SetTextAlign(hDC, TA_CENTER | TA_BOTTOM); TextOut(hDC, p.x, p.y, text, text.GetLength()); } else { SetTextColor(hDC, GetSysColor(COLOR_3DHILIGHT)); TextOut(hDC, p.x + 1, p.y + 1, text, text.GetLength()); SetTextColor(hDC, GetSysColor(COLOR_3DSHADOW)); TextOut(hDC, p.x, p.y, text, text.GetLength()); } SelectObject(hDC, hOldFont); DeleteObject(hFont); SetBkMode(hDC, nOldMode); } void CUniButton::FrameRgn3D(HDC hDC, const HRGN hRgn, BOOL bSunken) { HBRUSH hBrush; HRGN hBaseRgn = CreateRectRgn(0, 0, 0, 0); COLORREF ltOuter, ltInner, rbOuter, rbInner; if (!bSunken) { ltOuter = GetSysColor(COLOR_3DLIGHT); ltInner = GetSysColor(COLOR_3DHILIGHT); rbOute