不规则图片按钮mfc实现

// CxSkinButton.cpp : implementation file /** 15/03/2001 v1.00 * ing.davide.pizzolato@libero.it ** 29/03/2001 v1.10 * Milan.Gardian@LEIBINGER.com * - mouse tracking ** 02/04/2001 v1.20 * ing.davide.pizzolato@libero.it * - new CreateRgnFromBitmap ** 14/04/2001 v1.21 * - OnMouseLeave cast fixed * - Over bitmap consistency check ** 25/04/2001 v1.30 * Fable@aramszu.net * - ExtCreateRegion replacement ** 24/06/2001 v1.40 * - check & radio button add on * - added "focus" bitmap * - fixed CreateRgnFromBitmap bug * - fixed shortcut bug ** 27/10/2001 v1.41 * - fixed memory leakage in CreateRgnFromBitmap */ #include "stdafx.h" #include "xSkinButton.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CxSkinButton CxSkinButton::CxSkinButton() { m_DrawMode=1; // normal drawing mode m_FocusRectMargin=0; // disable focus dotted rect hClipRgn=NULL; // no clipping region m_TextColor=GetSysColor(COLOR_BTNTEXT); // default button text color m_button_down = m_tracking = m_Checked = false; } ///////////////////////////////////////////////////////////////////////////// CxSkinButton::~CxSkinButton() { if (hClipRgn) DeleteObject(hClipRgn); // free clip region } ///////////////////////////////////////////////////////////////////////////// BEGIN_MESSAGE_MAP(CxSkinButton, CButton) //{{AFX_MSG_MAP(CxSkinButton) ON_WM_ERASEBKGND() ON_WM_LBUTTONDOWN() ON_WM_LBUTTONUP() ON_WM_MOUSEMOVE() ON_WM_LBUTTONDBLCLK() ON_WM_KILLFOCUS() //ON_CONTROL_REFLECT_EX(BN_CLICKED, OnClicked) ON_WM_KEYDOWN() //}}AFX_MSG_MAP ON_MESSAGE(WM_MOUSELEAVE, OnMouseLeave) ON_MESSAGE(WM_CXSHADE_RADIO , OnRadioInfo) ON_MESSAGE(BM_SETCHECK , OnBMSetCheck) ON_MESSAGE(BM_GETCHECK , OnBMGetCheck) END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CxSkinButton message handlers ///////////////////////////////////////////////////////////////////////////// void CxSkinButton::PreSubclassWindow() { m_Style=GetButtonStyle(); ///get specific BS_ styles if ((m_Style & BS_AUTOCHECKBOX)==BS_AUTOCHECKBOX) // ||((m_Style & BS_CHECKBOX)==BS_CHECKBOX)) m_Style=BS_CHECKBOX; else if ((m_Style & BS_AUTORADIOBUTTON)==BS_AUTORADIOBUTTON) // ||((m_Style & BS_RADIOBUTTON)==BS_RADIOBUTTON)) m_Style=BS_RADIOBUTTON; else { m_Style=BS_PUSHBUTTON; } CButton::PreSubclassWindow(); ModifyStyle(0, BS_OWNERDRAW); } ///////////////////////////////////////////////////////////////////////////// BOOL CxSkinButton::OnEraseBkgnd(CDC* pDC) { return 1; } // doesn't erase the button background ///////////////////////////////////////////////////////////////////////////// void CxSkinButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct) { ASSERT (lpDrawItemStruct); //TRACE("* Captured: %08X\n", ::GetCapture()); //Check if the button state in not in inconsistent mode... POINT mouse_position; if ((m_button_down) && (::GetCapture() == m_hWnd) && (::GetCursorPos(&mouse_position))){ if (::WindowFromPoint(mouse_position) == m_hWnd){ if ((GetState() & BST_PUSHED) != BST_PUSHED) { //TRACE("* Inconsistency up detected! Fixing.\n"); SetState(TRUE); return; } } else { if ((GetState() & BST_PUSHED) == BST_PUSHED) { //TRACE("* Inconsistency up detected! Fixing.\n"); SetState(FALSE); return; } } } //TRACE("* Drawing: %08x\n", lpDrawItemStruct->itemState); CString sCaption; CDC *pDC = CDC::FromHandle(lpDrawItemStruct->hDC); // get device context RECT r=lpDrawItemStruct->rcItem; // context rectangle int cx = r.right - r.left ; // get width int cy = r.bottom - r.top ; // get height // get text box position RECT tr={r.left+m_FocusRectMargin+2,r.top,r.right-m_FocusRectMargin-2,r.bottom}; GetWindowText(sCaption); // get button text pDC->SetBkMode(TRANSPARENT); // Select the correct skin if (lpDrawItemStruct->itemState & ODS_DISABLED){ // DISABLED BUTTON if(m_bDisabled.m_hObject==NULL) // no skin selected for disabled state -> standard button pDC->FillSolidRect(&r,GetSysColor(COLOR_BTNFACE)); else // paint the skin DrawBitmap(pDC,(HBITMAP)m_bDisabled,r,m_DrawMode); // if needed, draw the standard 3D rectangular border if (m_Border) pDC->DrawEdge(&r,EDGE_RAISED,BF_RECT); // paint the etched button text pDC->SetTextColor(GetSysColor(COLOR_3DHILIGHT)); pDC->DrawText(sCaption,&tr,DT_SINGLELINE|DT_VCENTER|DT_CENTER); pDC->SetTextColor(GetSysColor(COLOR_GRAYTEXT)); OffsetRect(&tr,-1,-1); pDC->DrawText(sCaption,&tr,DT_SINGLELINE|DT_VCENTER|DT_CENTER); } else { // SELECTED (DOWN) BUTTON if ((lpDrawItemStruct->itemState & ODS_SELECTED)||m_Checked){ if(m_bDown.m_hObject==NULL) // no skin selected for selected state -> standard button pDC->FillSolidRect(&r,GetSysColor(COLOR_BTNFACE)); else { // paint the skin DrawBitmap(pDC,(HBITMAP)m_bDown,r,m_DrawMode); } OffsetRect(&tr,1,1); //shift text // if needed, draw the standard 3D rectangular border if (m_Border) pDC->DrawEdge(&r,EDGE_SUNKEN,BF_RECT); } else { // DEFAULT BUTTON if(m_bNormal.m_hObject==NULL) // no skin selected for normal state -> standard button pDC->FillSolidRect(&r,GetSysColor(COLOR_BTNFACE)); else // paint the skin if ((m_tracking)&&(m_bOver.m_hObject!=NULL)){ DrawBitmap(pDC,(HBITMAP)m_bOver,r,m_DrawMode); } else { if ((lpDrawItemStruct->itemState & ODS_FOCUS)&&(m_bFocus.m_hObject!=NULL)){ DrawBitmap(pDC,(HBITMAP)m_bFocus,r,m_DrawMode); } else { DrawBitmap(pDC,(HBITMAP)m_bNormal,r,m_DrawMode); } } // if needed, draw the standard 3D rectangular border if (m_Border) pDC->DrawEdge(&r,EDGE_RAISED,BF_RECT); } // paint the focus rect if ((lpDrawItemStruct->itemState & ODS_FOCUS)&&(m_FocusRectMargin>0)){ r.left += m_FocusRectMargin ; r.top += m_FocusRectMargin ; r.right -= m_FocusRectMargin ; r.bottom -= m_FocusRectMargin ; DrawFocusRect (lpDrawItemStruct->hDC, &r) ; } // paint the enabled button text pDC->SetTextColor(m_TextColor); pDC->DrawText(sCaption,&tr,DT_SINGLELINE|DT_VCENTER|DT_CENTER); } } ///////////////////////////////////////////////////////////////////////////// int CxSkinButton::GetBitmapWidth (HBITMAP hBitmap) { BITMAP bm; GetObject(hBitmap,sizeof(BITMAP),(PSTR)&bm); return bm.bmWidth;} ///////////////////////////////////////////////////////////////////////////// int CxSkinButton::GetBitmapHeight (HBITMAP hBitmap) { BITMAP bm; GetObject(hBitmap,sizeof(BITMAP),(PSTR)&bm); return bm.bmHeight;} ///////////////////////////////////////////////////////////////////////////// void CxSkinButton::DrawBitmap(CDC* dc, HBITMAP hbmp, RECT r, int DrawMode) { // DrawMode: 0=Normal; 1=stretch; 2=tiled fill if(DrawMode==2){ FillWithBitmap(dc,hbmp,r); return; } if(!hbmp) return; //safe check int cx=r.right - r.left; int cy=r.bottom - r.top; CDC dcBmp,dcMask; dcBmp.CreateCompatibleDC(dc); dcBmp.SelectObject(hbmp); if (m_bMask.m_hObject!=NULL){ dcMask.CreateCompatibleDC(dc); dcMask.SelectObject(m_bMask); CDC hdcMem; hdcMem.CreateCompatibleDC(dc); CBitmap hBitmap; hBitmap.CreateCompatibleBitmap(dc,cx,cy); hdcMem.SelectObject(hBitmap); hdcMem.BitBlt(r.left,r.top,cx,cy,dc,0,0,SRCCOPY); if(!DrawMode){ hdcMem.BitBlt(r.left,r.top,cx,cy,&dcBmp,0,0,SRCINVERT); hdcMem.BitBlt(r.left,r.top,cx,cy,&dcMask,0,0,SRCAND); hdcMem.BitBlt(r.left,r.top,cx,cy,&dcBmp,0,0,SRCINVERT); } else { int bx=GetBitmapWidth(hbmp); int by=GetBitmapHeight(hbmp); hdcMem.StretchBlt(r.left,r.top,cx,cy,&dcBmp,0,0,bx,by,SRCINVERT); hdcM