?? fretransview.cpp
字號:
// FreTransView.cpp : implementation of the CFreTransView class
//
#include "stdafx.h"
#include "FreTrans.h"
#include "FreTransDoc.h"
#include "FreTransView.h"
#include "MainFrm.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CFreTransView
IMPLEMENT_DYNCREATE(CFreTransView, CScrollView)
BEGIN_MESSAGE_MAP(CFreTransView, CScrollView)
//{{AFX_MSG_MAP(CFreTransView)
ON_WM_ERASEBKGND()
ON_COMMAND(ID_EDIT_COPY, OnEditCopy)
ON_UPDATE_COMMAND_UI(ID_EDIT_COPY, OnUpdateEditCopy)
ON_COMMAND(ID_EDIT_PASTE, OnEditPaste)
ON_UPDATE_COMMAND_UI(ID_EDIT_PASTE, OnUpdateEditPaste)
ON_COMMAND(ID_FREQ_DCT, OnFreqDct)
ON_COMMAND(ID_FREQ_FOUR, OnFreqFour)
ON_COMMAND(ID_FREQ_WALH, OnFreqWalh)
//}}AFX_MSG_MAP
// Standard printing commands
ON_COMMAND(ID_FILE_PRINT, CScrollView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_DIRECT, CScrollView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_PREVIEW, CScrollView::OnFilePrintPreview)
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CFreTransView construction/destruction
CFreTransView::CFreTransView()
{
// TODO: add construction code here
}
CFreTransView::~CFreTransView()
{
}
BOOL CFreTransView::PreCreateWindow(CREATESTRUCT& cs)
{
// TODO: Modify the Window class or styles here by modifying
// the CREATESTRUCT cs
return CScrollView::PreCreateWindow(cs);
}
/////////////////////////////////////////////////////////////////////////////
// CFreTransView drawing
void CFreTransView::OnDraw(CDC* pDC)
{
BeginWaitCursor();
CFreTransDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
HDIB hDIB = pDoc->GetHDIB();
if (hDIB != NULL)
{
LPSTR lpDIB = (LPSTR) ::GlobalLock((HGLOBAL) hDIB);
int cxDIB = (int) pDoc->GetDibImage()->DIBWidth(lpDIB);
int cyDIB = (int) pDoc->GetDibImage()->DIBHeight(lpDIB);
::GlobalUnlock((HGLOBAL) hDIB);
CRect rcDIB;
rcDIB.top = rcDIB.left = 0;
rcDIB.right = cxDIB;
rcDIB.bottom = cyDIB;
CRect rcDest;
if (pDC->IsPrinting())
{
// 是打印，計算輸出圖像的位置和大小，以便符合頁面
// 獲取打印頁面的水平寬度(象素)
int cxPage = pDC->GetDeviceCaps(HORZRES);
// 獲取打印頁面的垂直高度(象素)
int cyPage = pDC->GetDeviceCaps(VERTRES);
// 獲取打印機每英寸象素數
int cxInch = pDC->GetDeviceCaps(LOGPIXELSX);
int cyInch = pDC->GetDeviceCaps(LOGPIXELSY);
// 計算打印圖像大小（縮放，根據頁面寬度調整圖像大小）
rcDest.top = rcDest.left = 0;
rcDest.bottom = (int)(((double)cyDIB * cxPage * cyInch)
/ ((double)cxDIB * cxInch));
rcDest.right = cxPage;
// 計算打印圖像位置（垂直居中）
int temp = cyPage - (rcDest.bottom - rcDest.top);
rcDest.bottom += temp/2;
rcDest.top += temp/2;
}
else
{
// 不必縮放圖像
rcDest = rcDIB;
}
pDoc->GetDibImage()->PaintDIB(pDC->m_hDC, &rcDest, pDoc->GetHDIB(),
&rcDIB, pDoc->GetDocPalette());
}
EndWaitCursor();
}
void CFreTransView::OnInitialUpdate()
{
CScrollView::OnInitialUpdate();
// TODO: calculate the total size of this view
}
/////////////////////////////////////////////////////////////////////////////
// CFreTransView printing
BOOL CFreTransView::OnPreparePrinting(CPrintInfo* pInfo)
{
// 設置總頁數為一。
pInfo->SetMaxPage(1);
return DoPreparePrinting(pInfo);
}
void CFreTransView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add extra initialization before printing
}
void CFreTransView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add cleanup after printing
}
/////////////////////////////////////////////////////////////////////////////
// CFreTransView diagnostics
#ifdef _DEBUG
void CFreTransView::AssertValid() const
{
CScrollView::AssertValid();
}
void CFreTransView::Dump(CDumpContext& dc) const
{
CScrollView::Dump(dc);
}
CFreTransDoc* CFreTransView::GetDocument() // non-debug version is inline
{
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CFreTransDoc)));
return (CFreTransDoc*)m_pDocument;
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CFreTransView message handlers
BOOL CFreTransView::OnEraseBkgnd(CDC* pDC)
{
// 主要是為了設置子窗體默認的背景色
// 背景色由文檔成員變量m_refColorBKG指定
CFreTransDoc* pDoc = GetDocument();
CBrush brush(pDoc->m_refColorBKG);
CBrush* pOldBrush = pDC->SelectObject(&brush);
CRect rectClip;
pDC->GetClipBox(&rectClip); // 獲取重繪區域
pDC->PatBlt(rectClip.left, rectClip.top, rectClip.Width(),
rectClip.Height(), PATCOPY);
pDC->SelectObject(pOldBrush);
return TRUE;
}
void CFreTransView::OnEditCopy()
{
// 復制當前圖像
CFreTransDoc* pDoc = GetDocument();
if (OpenClipboard())
{
BeginWaitCursor();
EmptyClipboard();
// 復制當前圖像到剪貼板
SetClipboardData (CF_DIB, pDoc->GetDibImage()->
CopyHandle((HANDLE) pDoc->GetHDIB()) );
CloseClipboard();
EndWaitCursor();
}
}
void CFreTransView::OnUpdateEditCopy(CCmdUI* pCmdUI)
{
// 如果當前DIB對象不空，復制菜單項有效
pCmdUI->Enable(GetDocument()->GetHDIB() != NULL);
}
void CFreTransView::OnEditPaste()
{
// 粘貼圖像
HDIB hNewDIB = NULL;
CFreTransDoc* pDoc = GetDocument();
if (OpenClipboard())
{
BeginWaitCursor();
// 讀取剪貼板中的圖像
hNewDIB = (HDIB)pDoc->GetDibImage()->CopyHandle(::GetClipboardData(CF_DIB));
CloseClipboard();
if (hNewDIB != NULL)
{
pDoc->ReplaceHDIB(hNewDIB); // 替換DIB，同時釋放舊DIB對象
pDoc->InitDIBData(); // 更新DIB大小和調色板
pDoc->SetModifiedFlag(TRUE); // 設置臟標記
SetScrollSizes(MM_TEXT, pDoc->GetDocSize()); // 重新設置滾動視圖大小
OnDoRealize((WPARAM)m_hWnd,0); // 實現新的調色板
pDoc->UpdateAllViews(NULL); // 更新視圖
}
EndWaitCursor();
}
}
void CFreTransView::OnUpdateEditPaste(CCmdUI* pCmdUI)
{
// 如果當前剪貼板中有DIB對象，粘貼菜單項有效
pCmdUI->Enable(::IsClipboardFormatAvailable(CF_DIB));
}
LRESULT CFreTransView::OnDoRealize(WPARAM wParam, LPARAM)
{
ASSERT(wParam != NULL);
CFreTransDoc* pDoc = GetDocument();
if (pDoc->GetHDIB() == NULL)
{
return 0L;
}
CPalette* pPal = pDoc->GetDocPalette();
if (pPal != NULL)
{
CMainFrame* pAppFrame = (CMainFrame*) AfxGetApp()->m_pMainWnd;
ASSERT_KINDOF(CMainFrame, pAppFrame);
CClientDC appDC(pAppFrame);
// All views but one should be a background palette.
// wParam contains a handle to the active view, so the SelectPalette
// bForceBackground flag is FALSE only if wParam == m_hWnd (this view)
CPalette* oldPalette = appDC.SelectPalette(pPal,((HWND)wParam)!=m_hWnd);
if (oldPalette != NULL)
{
UINT nColorsChanged = appDC.RealizePalette();
if (nColorsChanged > 0)
{
pDoc->UpdateAllViews(NULL);
}
appDC.SelectPalette(oldPalette, TRUE);
}
else
{
TRACE0("\tCCh1_1View::OnPaletteChanged中調用SelectPalette()失敗！\n");
}
}
return 0L;
}
void CFreTransView::OnActivateView(BOOL bActivate, CView* pActivateView, CView* pDeactiveView)
{
CScrollView::OnActivateView(bActivate, pActivateView, pDeactiveView);
if (bActivate)
{
ASSERT(pActivateView == this);
OnDoRealize((WPARAM)m_hWnd, 0); // same as SendMessage(WM_DOREALIZE);
}
}
void CFreTransView::CalcWindowRect(LPRECT lpClientRect, UINT nAdjustType)
{
CScrollView::OnInitialUpdate();
ASSERT(GetDocument() != NULL);
SetScrollSizes(MM_TEXT, GetDocument()->GetDocSize());
}
void CFreTransView::OnFreqDct()
{
// 圖像離散余弦變換
CFreTransDoc* pDoc = GetDocument();
LPSTR lpDIB; // 指向DIB的指針
LPSTR lpDIBBits; // 指向DIB象素指針
lpDIB = (LPSTR) ::GlobalLock((HGLOBAL) pDoc->GetHDIB());
// 找到DIB圖像象素起始位置
lpDIBBits = pDoc->GetDibImage()->FindDIBBits(lpDIB);
// 判斷是否是8-bpp位圖（這里為了方便，只處理8-bpp位圖的離散余弦變換，其它的可以類推）
if (pDoc->GetDibImage()->DIBNumColors(lpDIB) != 256)
{
MessageBox("目前只支持256色位圖的離散余弦變換！", "系統提示" ,
MB_ICONINFORMATION | MB_OK);
::GlobalUnlock((HGLOBAL) pDoc->GetHDIB());
return;
}
BeginWaitCursor();
// 調用DIBDct()函數進行離散余弦變換
if (pDoc->GetDibImage()->DIBDct(lpDIBBits,pDoc->GetDibImage()->DIBWidth(lpDIB),
pDoc->GetDibImage()->DIBHeight(lpDIB)))
{
pDoc->SetModifiedFlag(TRUE); // 設置臟標記
pDoc->UpdateAllViews(NULL); // 更新視圖
}
else
{
MessageBox("分配內存失敗！", "系統提示" , MB_ICONINFORMATION | MB_OK);
}
::GlobalUnlock((HGLOBAL) pDoc->GetHDIB());
EndWaitCursor();
}
void CFreTransView::OnFreqFour()
{
// 圖像付立葉變換
CFreTransDoc* pDoc = GetDocument();
LPSTR lpDIB; // 指向DIB的指針
LPSTR lpDIBBits; // 指向DIB象素指針
lpDIB = (LPSTR) ::GlobalLock((HGLOBAL) pDoc->GetHDIB());
// 找到DIB圖像象素起始位置
lpDIBBits = pDoc->GetDibImage()->FindDIBBits(lpDIB);
// 判斷是否是8-bpp位圖（這里為了方便，只處理8-bpp位圖的付立葉變換，其它的可以類推）
if (pDoc->GetDibImage()->DIBNumColors(lpDIB) != 256)
{
MessageBox("目前只支持256色位圖的付立葉變換！", "系統提示" ,
MB_ICONINFORMATION | MB_OK);
::GlobalUnlock((HGLOBAL) pDoc->GetHDIB());
return;
}
BeginWaitCursor();
// 調用Fourier()函數進行付立葉變換
if (pDoc->GetDibImage()->Fourier(lpDIBBits,pDoc->GetDibImage()->DIBWidth(lpDIB),
pDoc->GetDibImage()->DIBHeight(lpDIB)))
{
pDoc->SetModifiedFlag(TRUE); // 設置臟標記
pDoc->UpdateAllViews(NULL); // 更新視圖
}
else
{
MessageBox("分配內存失敗！", "系統提示" , MB_ICONINFORMATION | MB_OK);
}
::GlobalUnlock((HGLOBAL) pDoc->GetHDIB());
EndWaitCursor();
}
void CFreTransView::OnFreqWalh()
{
// 圖像沃爾什-哈達瑪變換
CFreTransDoc* pDoc = GetDocument();
LPSTR lpDIB; // 指向DIB的指針
LPSTR lpDIBBits; // 指向DIB象素指針
lpDIB = (LPSTR) ::GlobalLock((HGLOBAL) pDoc->GetHDIB());
// 找到DIB圖像象素起始位置
lpDIBBits = pDoc->GetDibImage()->FindDIBBits(lpDIB);
// 判斷是否是8-bpp位圖（這里為了方便，只處理8-bpp位圖的沃爾什-哈達瑪變換，
// 其它的可以類推）
if (pDoc->GetDibImage()->DIBNumColors(lpDIB) != 256)
{
MessageBox("目前只支持256色位圖的沃爾什-哈達瑪變換！", "系統提示" ,
MB_ICONINFORMATION | MB_OK);
::GlobalUnlock((HGLOBAL) pDoc->GetHDIB());
return;
}
BeginWaitCursor();
// 調用DIBWalsh()或者DIBWalsh1()函數進行變換
if (pDoc->GetDibImage()->DIBWalsh1(lpDIBBits,pDoc->GetDibImage()->DIBWidth(lpDIB),
pDoc->GetDibImage()->DIBHeight(lpDIB)))
{
pDoc->SetModifiedFlag(TRUE); // 設置臟標記
pDoc->UpdateAllViews(NULL); // 更新視圖
}
else
{
MessageBox("分配內存失敗！", "系統提示" , MB_ICONINFORMATION | MB_OK);
}
::GlobalUnlock((HGLOBAL) pDoc->GetHDIB());
EndWaitCursor();
}
?? 快捷鍵說明
復制代碼
Ctrl + C
搜索代碼
Ctrl + F
全屏模式
F11
切換主題
Ctrl + Shift + D
顯示快捷鍵
?
增大字號
Ctrl + =
減小字號
Ctrl + -