Mercurial > vba-linux

     1 // BitmapControl.cpp : implementation file

     2 //

     3 

     4 #include "stdafx.h"

     5 #include "BitmapControl.h"

     6 

     7 bool BitmapControl::isRegistered = false;

     8 

     9 /////////////////////////////////////////////////////////////////////////////

    10 // BitmapControl

    11 

    12 IMPLEMENT_DYNCREATE(BitmapControl, CScrollView)

    13 

    14   BitmapControl::BitmapControl()

    15 {

    16   w = 0;

    17   h = 0;

    18   data = NULL;

    19   bmpInfo = NULL;

    20   stretch = false;

    21   registerClass();

    22   CSize sizeTotal;

    23   sizeTotal.cx = sizeTotal.cy = 0;

    24   SetScrollSizes(MM_TEXT, sizeTotal);

    25 }

    26 

    27 BitmapControl::~BitmapControl()

    28 {

    29 }

    30 

    31 

    32 BEGIN_MESSAGE_MAP(BitmapControl, CScrollView)

    33   //{{AFX_MSG_MAP(BitmapControl)

    34   ON_WM_ERASEBKGND()

    35   ON_WM_SIZE()

    36   ON_WM_LBUTTONDOWN()

    37   //}}AFX_MSG_MAP

    38   END_MESSAGE_MAP()

    39 

    40   /////////////////////////////////////////////////////////////////////////////

    41 // BitmapControl drawing

    42 

    43 void BitmapControl::OnInitialUpdate()

    44 {

    45   CScrollView::OnInitialUpdate();

    46 

    47   CSize sizeTotal;

    48   // TODO: calculate the total size of this view

    49   sizeTotal.cx = sizeTotal.cy = 100;

    50   SetScrollSizes(MM_TEXT, sizeTotal);

    51 }

    52 

    53 void BitmapControl::OnDraw(CDC* dc)

    54 {

    55   RECT r;

    56   GetClientRect(&r);

    57   int w1 = r.right - r.left;

    58   int h1 = r.bottom - r.top;

    59   CDC memDC;

    60   memDC.CreateCompatibleDC(dc);

    61   if(!stretch) {

    62     if(w > w1)

    63       w1 = w;

    64     if(h > h1)

    65       h1 = h;

    66   }

    67   CBitmap bitmap, *pOldBitmap;

    68   bitmap.CreateCompatibleBitmap(dc, w1, h1);

    69   pOldBitmap = memDC.SelectObject(&bitmap);

    70   if(stretch) {

    71     bmpInfo->bmiHeader.biWidth = w;

    72     bmpInfo->bmiHeader.biHeight = -h;

    73     

    74     StretchDIBits(memDC.GetSafeHdc(),

    75                   0,

    76                   0,

    77                   w1,

    78                   h1, 

    79                   0,

    80                   0,

    81                   w,

    82                   h,

    83                   data,

    84                   bmpInfo,

    85                   DIB_RGB_COLORS,

    86                   SRCCOPY);

    87   } else {

    88     FillOutsideRect(&memDC, CBrush::FromHandle(GetSysColorBrush(COLOR_BTNFACE)));

    89     

    90     bmpInfo->bmiHeader.biWidth = w;

    91     bmpInfo->bmiHeader.biHeight = -h;

    92     SetDIBitsToDevice(memDC.GetSafeHdc(),

    93                       0,

    94                       0,

    95                       w,

    96                       h,

    97                       0,

    98                       0,

    99                       0,

   100                       h,

   101                       data,

   102                       bmpInfo,

   103                       DIB_RGB_COLORS);

   104   }

   105 

   106   dc->BitBlt(0,0,w1,h1,

   107              &memDC,0,0,SRCCOPY);

   108   memDC.SelectObject(pOldBitmap);

   109 

   110   bitmap.DeleteObject();

   111   memDC.DeleteDC();  

   112 }

   113 

   114 /////////////////////////////////////////////////////////////////////////////

   115 // BitmapControl diagnostics

   116 

   117 #ifdef _DEBUG

   118 void BitmapControl::AssertValid() const

   119 {

   120   CScrollView::AssertValid();

   121 }

   122 

   123 void BitmapControl::Dump(CDumpContext& dc) const

   124 {

   125   CScrollView::Dump(dc);

   126 }

   127 #endif //_DEBUG

   128 

   129 /////////////////////////////////////////////////////////////////////////////

   130 // BitmapControl message handlers

   131 

   132 BOOL BitmapControl::OnEraseBkgnd(CDC* pDC) 

   133 {

   134   return TRUE;

   135 }

   136 

   137 void BitmapControl::OnSize(UINT nType, int cx, int cy) 

   138 {

   139   if(!stretch)

   140     CScrollView::OnSize(nType, cx, cy);

   141 }

   142 

   143 void BitmapControl::OnLButtonDown(UINT nFlags, CPoint pt) 

   144 {

   145   if(!data)

   146     return;

   147   int x = pt.x;

   148   int y = pt.y;

   149 

   150   WPARAM point;

   151   

   152   if(stretch) {

   153     RECT rect;

   154     GetClientRect(&rect);

   155   

   156     int height = rect.bottom - rect.top;

   157     int width = rect.right - rect.left;

   158   

   159     int xx = (x * w) / width;

   160     int yy = (y * h) / height;

   161 

   162     point = xx | (yy<<16);

   163 

   164     int xxx = xx / 8;

   165     int yyy = yy / 8;

   166 

   167     for(int i = 0; i < 8; i++) {

   168       memcpy(&colors[i*3*8], &data[xxx * 8 * 3 +

   169                                    w * yyy * 8 * 3 +

   170                                    i * w * 3], 8 * 3);

   171     }

   172   } else {

   173     POINT p;

   174     p.x = GetScrollPos(SB_HORZ);

   175     p.y = GetScrollPos(SB_VERT);

   176 

   177     p.x += x;

   178     p.y += y;

   179 

   180     if(p.x >= w ||

   181        p.y >= h)

   182       return;

   183 

   184     point = p.x | (p.y<<16);

   185     

   186     int xxx = p.x / 8;

   187     int yyy = p.y / 8;

   188 

   189     for(int i = 0; i < 8; i++) {

   190       memcpy(&colors[i*3*8], &data[xxx * 8 * 3 +

   191                                    w * yyy * 8 * 3 +

   192                                    i * w * 3], 8 * 3);

   193     }

   194   }

   195   

   196   GetParent()->SendMessage(WM_MAPINFO,

   197                            point,

   198                            (LPARAM)colors);

   199 }

   200 

   201 void BitmapControl::setBmpInfo(BITMAPINFO *info)

   202 {

   203   bmpInfo = info;

   204 }

   205 

   206 void BitmapControl::setData(u8 *d)

   207 {

   208   data = d;

   209 }

   210 

   211 void BitmapControl::setSize(int w1, int h1)

   212 {

   213   if(w != w1 || h != h1) {

   214     w = w1;

   215     h = h1;

   216     SIZE s;

   217     s.cx = w;

   218     s.cy = h;

   219     SetScrollSizes(MM_TEXT, s);

   220   }

   221 }

   222 

   223 void BitmapControl::refresh()

   224 {

   225   Invalidate();

   226 }

   227 

   228 

   229 void BitmapControl::registerClass()

   230 {

   231   if(!isRegistered) {

   232     WNDCLASS wc;

   233     ZeroMemory(&wc, sizeof(wc));

   234     wc.style = CS_HREDRAW | CS_VREDRAW | CS_GLOBALCLASS;

   235     wc.lpfnWndProc = (WNDPROC)::DefWindowProc;

   236     wc.hInstance = AfxGetInstanceHandle();

   237     wc.hIcon = NULL;

   238     wc.hCursor = LoadCursor(NULL, IDC_ARROW);

   239     wc.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);

   240     wc.lpszMenuName = NULL;

   241     wc.lpszClassName = "VbaBitmapControl";

   242     AfxRegisterClass(&wc);

   243     isRegistered = true;

   244   }

   245 }

   246 

   247 void BitmapControl::setStretch(bool b)

   248 {

   249   if(b != stretch) {

   250     stretch = b;

   251     Invalidate();

   252   }

   253 }

   254 

   255 bool BitmapControl::getStretch()

   256 {

   257   return stretch;

   258 }

   259 

   260 void BitmapControl::PostNcDestroy() 

   261 {

   262 }
author	Robert McIntyre <rlm@mit.edu>
date	Sat, 03 Mar 2012 10:31:27 -0600
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