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WndImage.cpp
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// =======================================================
//
// CWndImage.cpp
// WndImage class implementation
//
// Copyright (C) 2000 Peter Hauptmann
//
// Can be used and distributed freely
// as long as the source copyright stays intact
//
// updated version can be found under
// http://buerger.metropolis.de/bitbucket/
//
// -------------------------------------------------------
#include "stdafx.h"
#include "WndImage.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
const DWORD TIMERID_TRACKLEAVE = 1;
static HBITMAP GetSubImage(HBITMAP hBitmap, CRect & rcSource)
{
HBITMAP hBitmapResult;
HDC hScreenDC;
HDC hTgtDC;
HDC hSrcDC;
hScreenDC = GetDC(NULL);
hTgtDC = CreateCompatibleDC(hScreenDC);
hSrcDC = CreateCompatibleDC(hScreenDC);
hBitmapResult = CreateCompatibleBitmap(hScreenDC, rcSource.Width(), rcSource.Height());
HBITMAP hOldSrcBitmap;
HBITMAP hOldTgtBitmap;
hOldSrcBitmap = (HBITMAP)SelectObject(hSrcDC, hBitmap);
hOldTgtBitmap = (HBITMAP)SelectObject(hTgtDC, hBitmapResult);
BitBlt(hTgtDC, 0, 0, rcSource.Width(), rcSource.Height(), hSrcDC, rcSource.left, rcSource.top, SRCCOPY);
// Add the crosshair
SelectObject(hSrcDC, hOldSrcBitmap);
SelectObject(hTgtDC, hOldTgtBitmap);
ReleaseDC(NULL, hScreenDC);
DeleteDC(hTgtDC);
DeleteDC(hSrcDC);
return hBitmapResult;
};
// ==================================================================
// CTor / DTor
// ------------------------------------------------------------------
CWndImage::CWndImage()
{
m_shared = false;
m_bmpSize = CSize(0,0);
m_bltMode = bltNormal;
m_alignX = bltLeft;
m_alignY = bltTop;
m_srcRect.SetRectEmpty();
m_dstRect.SetRectEmpty();
m_bCaptured = FALSE;
m_zoomX = 1.0;
m_zoomY = 1.0;
m_origin.x = 0;
m_origin.y = 0;
m_bEnableZoom = FALSE;
m_bTrackTimerSet = FALSE;
m_bInvalidateInternalBitmap = TRUE;
m_bInvalidateToolbarBitmap = TRUE;
m_bInvalidateZoomBitmap = TRUE;
m_bInvalidateOverlayBitmap = TRUE;
m_pButtonToolbar = NULL;
m_pToolbarImage = NULL;
m_bToolbarTop = FALSE;
m_bOnToolbar = FALSE;
m_pBaseImage = NULL;
m_pOverlayImage = NULL;
m_pZoomImage = NULL;
m_pBufferImage = NULL;
m_pImageSink = NULL;
m_4Corners = false;
}
CWndImage::~CWndImage()
{
SetImg((HBITMAP) 0);
if (m_pToolbarImage)
delete m_pToolbarImage;
if (m_pBaseImage)
delete m_pBaseImage;
if (m_pOverlayImage)
delete m_pOverlayImage;
if (m_pZoomImage)
delete m_pZoomImage;
if (m_pBufferImage)
delete m_pBufferImage;
}
BEGIN_MESSAGE_MAP(CWndImage, CWnd)
//{{AFX_MSG_MAP(CWndImage)
ON_WM_ERASEBKGND()
ON_WM_PAINT()
ON_WM_SIZE()
ON_WM_LBUTTONDOWN()
ON_WM_RBUTTONDOWN()
ON_WM_LBUTTONUP()
ON_WM_MOUSEMOVE()
ON_WM_SETFOCUS()
ON_WM_MOUSEWHEEL()
ON_WM_TIMER()
ON_WM_KEYDOWN()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
// ==================================================================
// OnPaint
// ------------------------------------------------------------------
#include <gdiplus.h>
using namespace Gdiplus;
static Bitmap * GetBitmap(CRect & rcOut, HBITMAP hBitmap, CRect & rcSrc, CRect & rcDst, BOOL bInterpolate, Bitmap * pInBitmap = NULL)
{
Bitmap * pBitmap = new Bitmap(hBitmap, NULL);
Bitmap * pOutBitmap;
if (pInBitmap)
{
// Check the size of the bitmap and if it's the same keep it
if (pInBitmap->GetWidth()!=rcOut.Width() ||
pInBitmap->GetHeight()!=rcOut.Height())
{
delete pInBitmap;
pInBitmap = NULL;
};
};
if (!pInBitmap)
pOutBitmap = new Bitmap(rcOut.Width(), rcOut.Height(), PixelFormat24bppRGB);
else
pOutBitmap = pInBitmap;
Graphics * pGraphics = new Graphics(pOutBitmap);
if (pBitmap && pGraphics && pOutBitmap)
{
RectF rcfSrc(rcSrc.left, rcSrc.top, rcSrc.Width(), rcSrc.Height());
RectF rcfDst(rcDst.left, rcDst.top, rcDst.Width(), rcDst.Height());
ImageAttributes * pAttr = NULL;
SolidBrush brush(Color(200, 200, 200));
pGraphics->FillRectangle(&brush, 0, 0, rcOut.Width(), rcOut.Height());
if (bInterpolate)
pGraphics->SetInterpolationMode(InterpolationModeHighQualityBicubic);
else
pGraphics->SetInterpolationMode(InterpolationModeNearestNeighbor);
if (pBitmap)
pGraphics->DrawImage(pBitmap, rcfDst, rcfSrc.X, rcfSrc.Y, rcfSrc.Width, rcfSrc.Height, UnitPixel, pAttr, NULL, NULL);
if (pAttr)
delete pAttr;
delete pGraphics;
}
else
{
if (pOutBitmap)
delete pOutBitmap;
pOutBitmap = NULL;
};
if (pBitmap)
delete pBitmap;
return pOutBitmap;
};
/* ------------------------------------------------------------------- */
BOOL CWndImage::CreateInternalBitmap()
{
BOOL bResult = FALSE;
if (m_bInvalidateInternalBitmap)
{
CRect r;
GetClientRect(&r);
//if (m_pBaseImage)
// delete m_pBaseImage;
CRect & src = m_srcRect;
CRect & dst = m_dstRect;
m_pBaseImage = ::GetBitmap(r, (HBITMAP)m_bmp.GetSafeHandle(), src, dst, (m_zoomX < 1), m_pBaseImage);
bResult = TRUE;
};
m_bInvalidateInternalBitmap = FALSE;
return bResult;
};
/* ------------------------------------------------------------------- */
BOOL CWndImage::CreateToolbarBitmap()
{
BOOL bResult = FALSE;
if (m_pButtonToolbar && m_bInvalidateToolbarBitmap)
{
if (m_pToolbarImage)
delete m_pToolbarImage;
m_pToolbarImage = m_pButtonToolbar->GetImage();
m_bInvalidateToolbarBitmap = FALSE;
bResult = TRUE;
};
return bResult;
};
/* ------------------------------------------------------------------- */
BOOL CWndImage::CreateZoomBitmap()
{
BOOL bResult = FALSE;
if (m_bEnableZoom && m_bInvalidateZoomBitmap)
{
BOOL bNeedRefresh = FALSE;
if (m_pZoomImage)
bNeedRefresh = TRUE;
if (m_pZoomImage)
delete m_pZoomImage;
m_pZoomImage = NULL;
if ((m_zoomX < 3) && m_bmp.m_hObject)
{
CPoint ptBitmap = m_ptZoomPos;
CRect rcClient;
GetClientRect(&rcClient);
if (rcClient.PtInRect(ptBitmap))
{
ScreenToBitmap(ptBitmap);
CRect src;
CRect dst;
dst.left = dst.top = 0;
dst.right = dst.bottom = 90;
if (ptBitmap.x >= 15)
{
src.right = min(m_bmpSize.cx, ptBitmap.x + 15);
src.left = src.right-30;
}
else
{
src.left = 0;
src.right = 30;
};
if (ptBitmap.y >= 15)
{
src.bottom= min(m_bmpSize.cy, ptBitmap.y + 15);
src.top = src.bottom-30;;
}
else
{
src.top = 0;
src.bottom = 30;
};
HBITMAP hSubImage;
CRect rcOut;
hSubImage = GetSubImage((HBITMAP)m_bmp.GetSafeHandle(), src);
src.left = src.top = 0;
src.right = src.bottom = 30;
rcOut.left = rcOut.top = 0;
rcOut.right = rcOut.bottom = 90;
m_pZoomImage = ::GetBitmap(rcOut, hSubImage, src, dst, FALSE);
DeleteObject(hSubImage);
if (m_pZoomImage)
{
Graphics graphics(m_pZoomImage);
Pen pen(Color(255, 255, 255), 1.0);
graphics.DrawRectangle(&pen, dst.left, dst.top, dst.Width(), dst.Height());
pen.SetColor(Color(170, 255, 0, 0));
graphics.DrawLine(&pen, dst.left+dst.Width()/2-10, dst.top+dst.Height()/2, dst.left+dst.Width()/2-3, dst.Height()/2);
graphics.DrawLine(&pen, dst.left+dst.Width()/2+10, dst.top+dst.Height()/2, dst.left+dst.Width()/2+3, dst.Height()/2);
graphics.DrawLine(&pen, dst.left+dst.Width()/2, dst.top+dst.Height()/2-10, dst.left+dst.Width()/2, dst.Height()/2-3);
graphics.DrawLine(&pen, dst.left+dst.Width()/2, dst.top+dst.Height()/2+10, dst.left+dst.Width()/2, dst.Height()/2+3);
};
};
bResult = bNeedRefresh;
}
};
return bResult;
};
/* ------------------------------------------------------------------- */
BOOL CWndImage::Draw4Corners(Graphics * pGraphics)
{
BOOL bResult = FALSE;
CRect rcClient;
LONG lWidth,
lHeight;
GetClientRect(&rcClient);
lWidth = (rcClient.right-rcClient.left)/2.7;
lHeight = (rcClient.bottom-rcClient.top)/2.7;
if (lWidth > 100 && lHeight > 70)
{
CRect rcOut, rcSrc, rcDst;
LONG lZoomWidth = lWidth / m_zoomX,
lZoomHeight = lHeight / m_zoomY;
rcOut.left = rcOut.top = 0;
rcOut.right = lWidth;
rcOut.bottom = lHeight;
// Top left corner
rcSrc.left = rcSrc.top = 0;
rcSrc.right = lZoomWidth;
rcSrc.bottom = lZoomHeight;
rcDst.left = rcDst.top = 0;
rcDst.right = lWidth;
rcDst.bottom = lHeight;
Pen pen(Color(255, 255, 255), 1.0);
Bitmap * pCorner;
pCorner = ::GetBitmap(rcOut, (HBITMAP)m_bmp.GetSafeHandle(), rcSrc, rcDst, (m_zoomX<1));
if (pCorner)
{
pGraphics->DrawImage(pCorner, 0, 0);
pGraphics->DrawRectangle(&pen, 0, 0, lWidth, lHeight);
delete pCorner;
};
// Top right corner
rcSrc.left = m_bmpSize.cx - lZoomWidth-1;
rcSrc.top = 0;
rcSrc.right = m_bmpSize.cx-1;
rcSrc.bottom = lZoomHeight;
rcDst.left = rcDst.top = 0;
rcDst.right = lWidth;
rcDst.bottom = lHeight;
pCorner = ::GetBitmap(rcOut, (HBITMAP)m_bmp.GetSafeHandle(), rcSrc, rcDst, (m_zoomX<1));
if (pCorner)
{
pGraphics->DrawImage(pCorner, rcClient.right-lWidth, 0);
pGraphics->DrawRectangle(&pen, rcClient.right-lWidth, 0, lWidth, lHeight);
delete pCorner;
};
// bottom left corner
rcSrc.left = 0;
rcSrc.top = m_bmpSize.cy - lZoomHeight - 1;
rcSrc.right = lZoomWidth;
rcSrc.bottom = m_bmpSize.cy-1;
rcDst.left = rcDst.top = 0;
rcDst.right = lWidth;
rcDst.bottom = lHeight;
pCorner = ::GetBitmap(rcOut, (HBITMAP)m_bmp.GetSafeHandle(), rcSrc, rcDst, (m_zoomX<1));
if (pCorner)
{
pGraphics->DrawImage(pCorner, 0, rcClient.bottom-lHeight);
pGraphics->DrawRectangle(&pen, 0, rcClient.bottom-lHeight, lWidth, lHeight);
delete pCorner;
};
// bottom right corner
rcSrc.left = m_bmpSize.cx - lZoomWidth-1;
rcSrc.top = m_bmpSize.cy - lZoomHeight - 1;
rcSrc.right = m_bmpSize.cx-1;
rcSrc.bottom = m_bmpSize.cy-1;
rcDst.left = rcDst.top = 0;
rcDst.right = lWidth;
rcDst.bottom = lHeight;
pCorner = ::GetBitmap(rcOut, (HBITMAP)m_bmp.GetSafeHandle(), rcSrc, rcDst, (m_zoomX<1));
if (pCorner)
{
pGraphics->DrawImage(pCorner, rcClient.right-lWidth, rcClient.bottom-lHeight);
pGraphics->DrawRectangle(&pen, rcClient.right-lWidth, rcClient.bottom-lHeight, lWidth, lHeight);
delete pCorner;
};
bResult = TRUE;
};
return bResult;
};
/* ------------------------------------------------------------------- */
BOOL CWndImage::CreateBufferBitmap()
{
BOOL bResult = FALSE;
BOOL bNeedRefresh = FALSE;
bNeedRefresh = m_bInvalidateOverlayBitmap;
bNeedRefresh = CreateInternalBitmap() || bNeedRefresh;
bNeedRefresh = CreateToolbarBitmap() || bNeedRefresh;
bNeedRefresh = CreateZoomBitmap() || bNeedRefresh;
m_bInvalidateZoomBitmap = FALSE;
m_bInvalidateInternalBitmap = FALSE;
m_bInvalidateToolbarBitmap = FALSE;
if (bNeedRefresh || !m_pBufferImage)
{
CRect rcClient;
GetClientRect(&rcClient);
if (m_pBufferImage)
{
// Check the size
if ((m_pBufferImage->GetWidth() != rcClient.Width()) ||
(m_pBufferImage->GetHeight() != rcClient.Height()))
{
delete m_pBufferImage;
m_pBufferImage = NULL;
};
};
if (!m_pBufferImage)
{
m_pBufferImage = new Bitmap(rcClient.Width(), rcClient.Height(), PixelFormat24bppRGB);
if (m_pBufferImage->GetLastStatus()!=Ok)
{
delete m_pBufferImage;
m_pBufferImage = NULL;
};
};
if (m_pBufferImage)
{
Graphics graphics(m_pBufferImage);
// Draw the internal Bitmap
graphics.DrawImage(m_pBaseImage, 0, 0);
if (m_4Corners)
Draw4Corners(&graphics);
else
{
// Then the overlay layer is available
if (m_bInvalidateOverlayBitmap)
{
m_bInvalidateOverlayBitmap = FALSE;
if (m_pOverlayImage)
delete m_pOverlayImage;
m_pOverlayImage = NULL;
if (m_pImageSink && m_bmp.m_hObject)
m_pOverlayImage = m_pImageSink->GetOverlayImage(rcClient);
};
if (m_pOverlayImage && m_bmp.m_hObject)
graphics.DrawImage(m_pOverlayImage, RectF(rcClient.left, rcClient.top, rcClient.Width(), rcClient.Height()));
// Then the zoom if available
if (m_pZoomImage && m_bmp.m_hObject)
graphics.DrawImage(m_pZoomImage, m_rcZoom.left, m_rcZoom.top);
// then the toolbar
if (m_pToolbarImage && m_bmp.m_hObject)
{
CRect rcToolbar;
GetToolbarRect(rcToolbar);
// Check the cursor position against the toolbar position
CPoint pt;
float fTransparency = 0.50;
GetCursorPos(&pt);
ScreenToClient(&pt);
m_bOnToolbar = FALSE;
if (rcToolbar.PtInRect(pt) && !m_bCaptured)
{
fTransparency = 1.0;
m_bOnToolbar = TRUE;
};
ImageAttributes imgAttr;
ColorMatrix TransMatrix[] = {1.0f, 0.0f, 0.0f, 0.0f, 0.0f,
0.0f, 1.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, fTransparency, 0.0f,
0.0f, 0.0f, 0.0f, 0.0f, 1.0f};
Rect rcfDst(rcToolbar.left, rcToolbar.top, rcToolbar.Width(), rcToolbar.Height());
imgAttr.SetColorMatrix(TransMatrix, ColorMatrixFlagsDefault, ColorAdjustTypeBitmap);
graphics.DrawImage(m_pToolbarImage, rcfDst, 0, 0, rcToolbar.Width(), rcToolbar.Height(), UnitPixel, &imgAttr, NULL, NULL);
if (m_bOnToolbar && m_pButtonToolbar)
{
Image * pTooltipImage;
CRect rcTooltip;
CPoint ptTooltip;
pTooltipImage = m_pButtonToolbar->GetTooltipImage(rcTooltip);
if (pTooltipImage)
{
// Move the rectangle
ptTooltip.x = rcToolbar.left - rcTooltip.Width();
ptTooltip.y = rcToolbar.top + rcTooltip.top;
graphics.DrawImage(pTooltipImage, ptTooltip.x, ptTooltip.y);
delete pTooltipImage;
};
};
};
};
graphics.Flush(FlushIntentionSync);
};
};
return bResult;
};
/* ------------------------------------------------------------------- */
BOOL CWndImage::OnEraseBkgnd(CDC* pDC)
{
CRect r;
CreateBufferBitmap();
GetClientRect(&r);
if (m_pBufferImage && m_pBufferImage->GetLastStatus()==Ok)
{
Graphics graphics(pDC->GetSafeHdc());
if (graphics.GetLastStatus()==Ok)
graphics.DrawImage(m_pBufferImage, 0, 0);
};
return TRUE;
};
/* ------------------------------------------------------------------- */
void CWndImage::OnPaint()
{
DWORD style = GetStyle();
if (!(style & WS_VISIBLE)) return;
CRect r;
CreateBufferBitmap();
GetClientRect(&r);
CPaintDC dc(this);
if (m_pBufferImage && m_pBufferImage->GetLastStatus()==Ok)
{
Graphics graphics(dc.GetSafeHdc());
if (graphics.GetLastStatus()==Ok)
graphics.DrawImage(m_pBufferImage, 0, 0);
};
}
// ==================================================================
// Create
// ------------------------------------------------------------------
BOOL CWndImage::Create(RECT const & r, CWnd * parent, UINT id, DWORD dwStyle)
{
BOOL ok = CWnd::Create(NULL, NULL, dwStyle, r, parent, id, NULL);
return ok;
}
// ==================================================================
// CreateFromStatic
// ------------------------------------------------------------------
BOOL CWndImage::CreateFromStatic(CWnd * sc)
{
_ASSERTE(!::IsWindow(m_hWnd)); // image control already created
if (!sc || !::IsWindow(sc->m_hWnd)) return false;
CWnd * dlg = sc->GetParent();
if (!dlg || !::IsWindow(dlg->m_hWnd)) return false;
CRect r;
sc->GetWindowRect(&r);
dlg->ScreenToClient(&r);
CString s;
DWORD style = sc->GetStyle() | WS_TABSTOP;
DWORD exstyle = sc->GetExStyle();
sc->GetWindowText(s);
UINT dlgID = sc->GetDlgCtrlID();
HBITMAP bmp = (HBITMAP) sc->SendMessage(STM_GETIMAGE, IMAGE_BITMAP, 0);
if (bmp)
sc->SendMessage(STM_SETIMAGE, IMAGE_BITMAP, 0);
sc->DestroyWindow();
CreateEx(exstyle, NULL, s, style, r, dlg, dlgID);
SetFocus();
if (bmp)
{
SetImg(bmp, false);
SetBltMode(bltFitXY);
}
return true;
}
// ==================================================================
// SetImage
// ------------------------------------------------------------------
void CWndImage::SetImg(HBITMAP bmp, bool shared)
{
if ((HBITMAP)m_bmp.m_hObject != bmp)
{
HGDIOBJ prev = m_bmp.Detach();
if (prev && !m_shared)
DeleteObject(prev);
m_bmp.Attach(bmp);
m_shared = shared;
if (bmp != 0)
{
BITMAP bmp;
m_bmp.GetBitmap(&bmp);
m_bmpSize.cx = bmp.bmWidth;
m_bmpSize.cy = bmp.bmHeight;
}
else
m_bmpSize = CSize(0,0);
SetSourceRect(); // use entire new image
Recalc();
};
return;
}
// ==================================================================
// SetImage Clones
// ------------------------------------------------------------------
void CWndImage::SetImg(CBitmap * bmp)
{
SetImg(bmp ? (HBITMAP) (bmp->m_hObject) : 0);
}
/* ------------------------------------------------------------------- */
bool CWndImage::SetImg(LPCTSTR resID, HINSTANCE instance)
{
if (!instance)
instance = AfxGetResourceHandle();
HBITMAP bmp = ::LoadBitmap(instance, resID);
SetImg(bmp, false);
return bmp != 0;
}
/* ------------------------------------------------------------------- */
bool CWndImage::SetImg(UINT resID, HINSTANCE instance)
{
return SetImg(MAKEINTRESOURCE(resID), instance);
}
/* ------------------------------------------------------------------- */
bool CWndImage::SetImgFile(LPCTSTR fileName)
{
HBITMAP bmp = (HBITMAP) ::LoadImage(NULL, fileName, IMAGE_BITMAP, 0,0, LR_LOADFROMFILE);
SetImg(bmp);
return bmp != 0;
}
// ==================================================================
// SetBltMode
// ------------------------------------------------------------------
void CWndImage::SetBltMode(int mode)
{
if (mode <=0 || mode > blt_MaxMode) mode = bltNormal;
if (mode == m_bltMode) return;
m_bltMode = mode;
Recalc();
}
// ==================================================================
// SetAlign
// ------------------------------------------------------------------
void CWndImage::SetAlign(int alignX, int alignY)
{
if (alignX < 0 || alignX > blt_MaxAlign || alignX == m_alignX) alignX = 0;
if (alignY < 0 || alignY > blt_MaxAlign || alignY == m_alignY) alignY = 0;
if (alignX == 0 && alignY == 0) return; // no change
if (alignX) m_alignX = alignX;
if (alignY) m_alignY = alignY;
Recalc();
}
// ==================================================================
// SetSourceRect
// ------------------------------------------------------------------
void CWndImage::SetSourceRect(RECT const & r)
{
CRect bmpRect(0,0, m_bmpSize.cx, m_bmpSize.cy);
m_srcRect.IntersectRect(&r, &bmpRect);
Recalc();
}
// ==================================================================
// SetSourceRect
// ------------------------------------------------------------------
void CWndImage::SetSourceRect()
{
m_srcRect.SetRect(0,0, m_bmpSize.cx, m_bmpSize.cy);
Recalc();
}
// ==================================================================
// Recalc
// ------------------------------------------------------------------
void CWndImage::Recalc(bool invalidate)
{
if (!::IsWindow(m_hWnd))
return;
CRect & src = m_srcRect;
CRect & dst = m_dstRect;
CRect r;
GetClientRect(&r);
CSize wndSize = r.Size();
if (wndSize.cx == 0 || wndSize.cy == 0 || src.IsRectEmpty())
dst.SetRectEmpty();
else
{
dst.left = dst.top = 0;
switch (m_bltMode)
{
default :
case bltNormal : dst.right = src.Width(); dst.bottom = src.Height(); break;
case bltStretch : dst.right = wndSize.cx; dst.bottom = wndSize.cy; break;
case bltCustom : dst.right = (int)(src.Width() * m_zoomX);
dst.bottom = (int)(src.Height() * m_zoomY);
break;
case bltFitX :
case bltFitY :
case bltFitXY :
case bltFitSm : {
double zoom = 1;
double zoomX = ((double) wndSize.cx) / src.Width();
double zoomY = ((double) wndSize.cy) / src.Height();
if (m_bltMode == bltFitX)
zoom = zoomX;
else if (m_bltMode == bltFitY)
zoom = zoomY;
else // for stretchXY take smaller, for stretchSm take larger:
zoom = ((m_bltMode == bltFitXY) ^ (zoomX > zoomY)) ? zoomX : zoomY;
m_zoomX = m_zoomY = zoom; // so user can query these values
dst.right = (int)(src.Width() * zoom);
dst.bottom = (int)(src.Height() * zoom);
break;
}
case bltTile : break;
}
switch (m_alignX)
{
case bltCenter :
m_origin.x = (wndSize.cx-dst.Width()) / 2;
break;
case bltRight :
m_origin.x = wndSize.cx-dst.Width();
break;
case bltLeft :
m_origin.x = 0;
break;
}
dst.left += m_origin.x;
dst.right += m_origin.x;
switch (m_alignY)
{
case bltCenter :
m_origin.y = (wndSize.cy-dst.Height()) / 2;
break;
case bltRight :
m_origin.y = wndSize.cy-dst.Height();
break;
case bltTop :
m_origin.y = 0;
break;
}
dst.top += m_origin.y;
dst.bottom += m_origin.y;
}
if (m_bltMode == bltTile)
{
dst.SetRect(0,0, wndSize.cx, wndSize.cy);
}
if (invalidate)
{
m_bInvalidateInternalBitmap = TRUE;
m_bInvalidateOverlayBitmap = TRUE;
Invalidate();
};
}
// ------------------------------------------------------------------
void CWndImage::OnSize(UINT nType, int cx, int cy)
{
CWnd::OnSize(nType, cx, cy);
Recalc();
}
// ==================================================================
// SetZoom, origin
// ------------------------------------------------------------------
void CWndImage::SetZoom(double zoomX, double zoomY)
{
m_zoomX = zoomX;
m_zoomY = zoomY;
m_bltMode = bltCustom;
Recalc();
}
void CWndImage::SetZoom(double zoom)
{
SetZoom(zoom, zoom);
}
void CWndImage::SetOrigin(int origX, int origY)
{
SetOriginX(origX);
SetOriginY(origY);
}
void CWndImage::SetOriginX(int origX)
{
m_origin.x = origX;
m_alignX = bltCustom;
Recalc();
}
void CWndImage::SetOriginY(int origY)
{
m_origin.y = origY;
m_alignY = bltCustom;
Recalc();
}
// ==================================================================
// GetBitmap
// ------------------------------------------------------------------
HBITMAP CWndImage::GetBitmap(bool detach)
{
HBITMAP ret = (HBITMAP) m_bmp.m_hObject;
if (detach)
{
m_shared = true;
//SetImg((HBITMAP)0);
}
return ret;
}
// ==================================================================
// SetbackBrush
// ------------------------------------------------------------------
void CWndImage::OnLButtonDown(UINT nFlags, CPoint point)
{
BOOL bPass = TRUE;
SetFocus();
if (m_pButtonToolbar && m_bmp.m_hObject && !m_4Corners)
{
CRect rcToolbar;
BOOL bRefresh = FALSE;
GetToolbarRect(rcToolbar);
if (rcToolbar.PtInRect(point))
{
if (m_pButtonToolbar->OnLButtonDown(point.x-rcToolbar.left, point.y-rcToolbar.top))
RefreshToolbar();
bPass = FALSE;
};
};
if (bPass && m_pImageSink && m_bmp.m_hObject && !m_4Corners)
{
if (m_pImageSink->Image_OnLButtonDown(point.x, point.y))
{
RefreshOverlay();
m_bCaptured = TRUE;
SetCapture();
};
};
CWnd::OnLButtonDown(nFlags, point);
}
// ------------------------------------------------------------------
void CWndImage::OnLButtonUp(UINT nFlags, CPoint point)
{
BOOL bPass = TRUE;
ReleaseCapture();
if (!m_bCaptured && m_pButtonToolbar && m_bmp.m_hObject && !m_4Corners)
{
CRect rcToolbar;
GetToolbarRect(rcToolbar);
if (rcToolbar.PtInRect(point))
{
if (m_pButtonToolbar->OnLButtonUp(point.x-rcToolbar.left, point.y-rcToolbar.top))