/* | ============================================================================== | Copyright (C) 2006-2011 Allied Vision Technologies. All Rights Reserved. | | This code may be used in part, or in whole for your application development. | |============================================================================== | | File: ImageView.cpp | | Project/lib: Linux Sample Viewer | | Target: | | Description: Render the camera image (live view) window. | | Notes: | |============================================================================== | | THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED | WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF TITLE, | NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, | OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, | EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |============================================================================== */ //===== INCLUDE FILES ========================================================= #include #include #include #include #include #include //===== DEFINES =============================================================== #define ULONG_PADDING(x) (((x+3) & ~3) - x) #define max(a,b) (a > b ? a : b ) #define min(a,b) (a < b ? a : b ) //#define _USE_BITMAP 1 //===== TYPES ================================================================= typedef struct { unsigned char LByte; unsigned char MByte; unsigned char UByte; } Packed12BitsPixel_t; //===== EVENTS TABLE ========================================================== BEGIN_DECLARE_EVENT_TYPES() DECLARE_EVENT_TYPE(dADAPT,wxID_ANY) END_DECLARE_EVENT_TYPES() DEFINE_EVENT_TYPE(dADAPT) BEGIN_EVENT_TABLE(CImageView, wxScrolledWindow) EVT_SIZE(CImageView::OnSize) EVT_COMMAND(wxID_ANY,dADAPT,CImageView::OnAdapt) EVT_RIGHT_DOWN(CImageView::OnRightClick) EVT_ERASE_BACKGROUND(CImageView::OnEraseBackground) END_EVENT_TABLE() //===== LOCAL DATA ============================================================ #ifdef _USE_BITMAP typedef wxPixelData tPixelData; #endif //===== CLASS DEFINITION ====================================================== // convert YUV to RGB inline void YUV2RGB(int y,int u,int v,int& r,int& g,int& b) { // u and v are +-0.5 u -= 128; v -= 128; // Conversion (clamped to 0..255) r = min(max(0,(int)(y + 1.370705 * (float)v)),255); g = min(max(0,(int)(y - 0.698001 * (float)v - 0.337633 * (float)u)),255); b = min(max(0,(int)(y + 1.732446 * (float)u)),255); } // convert YUV to RGB inline void YUV2RGB(int y,int u,int v,int& r,int& g,int& b,bool interpolate) { if(interpolate) { // u and v are +-0.5 u -= 128; v -= 128; // Conversion (clamped to 0..255) r = min(max(0,(int)(y + 1.370705 * (float)v)),255); g = min(max(0,(int)(y - 0.698001 * (float)v - 0.337633 * (float)u)),255); b = min(max(0,(int)(y + 1.732446 * (float)u)),255); } else { r = g = b = min(max(0,y),255); } } #ifdef _ppc // sawp a short little endian into big endian inline unsigned short swap16(unsigned short aValue) { unsigned short lValue = aValue; unsigned char* lArray = (unsigned char*)&lValue; unsigned char lTmp; lTmp = lArray[0]; lArray[0] = lArray[1]; lArray[1] = lTmp; return lValue; } #endif /* * Method: CImageView() * Purpose: constructor * Comments: none */ CImageView::CImageView(wxWindow* aParent,const wxSize& aSize,tPvInterface aInterface) : wxScrolledWindow(aParent,wxID_ANY,wxDefaultPosition,aSize) , iInterface(aInterface) { iScale = false; iColorInterpolate = false; iFreshData = false; iWidth = 0; iHeight = 0; iWRatio = 1; iHRatio = 1; iImage = NULL; iBitmap = NULL; SetBackgroundColour(*wxLIGHT_GREY); } /* * Method: ~CImageView() * Purpose: destructor * Comments: none */ CImageView::~CImageView() { delete iImage; delete iBitmap; } /* * Method: Update() * Purpose: update the rendering with a given frame * Comments: none */ bool CImageView::Update(tPvFrame* aFrame) { iFreshData = true; Process(aFrame); wxScrolledWindow::Update(); return true; } /* * Method: SetToScale() * Purpose: instruct the view to scale the image to fit * in the window * Comments: none */ void CImageView::SetToScale(bool aScale) { iScale = aScale; AdaptToSize(); } /* * Method: Reset() * Purpose: do whatever need to be done when the streaming is re-started * Comments: none */ void CImageView::Reset() { } /* * Method: CopyImage() * Purpose: copy the last image data received into a new image object * Comments: none */ wxImage* CImageView::CopyImage() { #ifdef _USE_BITMAP wxImage* lImage = NULL; iLock.Lock(); if(iBitmap) lImage = new wxImage(iBitmap->ConvertToImage()); else lImage = NULL; iLock.Unlock(); return lImage; #else wxImage* lImage = NULL; iLock.Lock(); if(iImage) lImage = new wxImage(*iImage); else lImage = NULL; iLock.Unlock(); return lImage; #endif } /* * Method: Process() * Purpose: process a given frame for rendering * Comments: none */ void CImageView::Process(tPvFrame* aFrame) { // if we don't have an image yet, or if the frame size have changed, we need // to allocate a new image #ifdef _USE_BITMAP if(!iBitmap || iWidth != aFrame->Width || iHeight != aFrame->Height) #else if(!iImage || iWidth != aFrame->Width || iHeight != aFrame->Height) #endif { #ifdef _USE_BITMAP // delete the previous bitmap (if there was one) delete iBitmap; #else // delete the previous image (if there was one) delete iImage; #endif // set the data iWidth = aFrame->Width; iHeight = aFrame->Height; #ifdef _USE_BITMAP // create the image iBitmap = new wxBitmap(iWidth,iHeight,24); #else // create the image iImage = new wxImage(iWidth,iHeight,false); #endif // and send a async event so that the view take the new // image size in consideration wxCommandEvent lEvent(dADAPT,wxID_ANY); lEvent.SetEventObject(this); GetEventHandler()->AddPendingEvent(lEvent); } #ifdef _USE_BITMAP if(iBitmap) { tPixelData lPixels(*iBitmap); tPixelData::Iterator lData(lPixels); long lRemainder = lPixels.GetRowStride() - 3 * iWidth; #else if(iImage) { #endif if(!iColorInterpolate) { switch(aFrame->Format) { case ePvFmtBayer8: { aFrame->Format = ePvFmtMono8; break; } case ePvFmtBayer16: { aFrame->Format = ePvFmtMono16; break; } case ePvFmtBayer12Packed: { aFrame->Format = ePvFmtMono12Packed; break; } default: break; } } // copy the frame data into the image switch(aFrame->Format) { case ePvFmtMono8: { #ifdef _USE_BITMAP const unsigned char* lSrc = (unsigned char*)aFrame->ImageBuffer; const unsigned char* lSrcEnd = lSrc + (iWidth * iHeight); unsigned char* lDest = (unsigned char*)&lData.Data(); while(lSrc < lSrcEnd) { for (unsigned long i = 0;iGetData(); const unsigned char* lSrc = (unsigned char*)aFrame->ImageBuffer; const unsigned char* lSrcEnd = lSrc + (iWidth * iHeight); while(lSrc < lSrcEnd) { lDest[0] = lDest[1] = lDest[2] = *lSrc; lSrc++; lDest += 3; } #endif break; } case ePvFmtMono16: { #ifdef _USE_BITMAP const unsigned short* lSrc = (unsigned short*)aFrame->ImageBuffer; const unsigned short* lSrcEnd = lSrc + (iWidth * iHeight); const unsigned char lBitshift = (unsigned char)aFrame->BitDepth - 8; unsigned char* lDest = (unsigned char*)&lData.Data(); while(lSrc < lSrcEnd) { for (unsigned long i = 0;i> lBitshift; #endif lSrc++; lDest+=3; } if(lRemainder) lDest+=lRemainder; } #else unsigned char* lDest = iImage->GetData(); const unsigned short* lSrc = (unsigned short*)aFrame->ImageBuffer; const unsigned short* lSrcEnd = lSrc + (iWidth * iHeight); const unsigned char lBitshift = (unsigned char)aFrame->BitDepth - 8; while(lSrc < lSrcEnd) { #ifdef _ppc lDest[0] = lDest[1] = lDest[2] = *lSrc << lBitshift; #else lDest[0] = lDest[1] = lDest[2] = *lSrc >> lBitshift; #endif lSrc++; lDest += 3; } #endif break; } case ePvFmtBayer8: { #ifdef _USE_BITMAP unsigned char* lDest = (unsigned char*)&lData.Data(); PvUtilityColorInterpolate(aFrame,&lDest[0],&lDest[1],&lDest[2],2,lRemainder); #else unsigned char* lDest = iImage->GetData(); PvUtilityColorInterpolate(aFrame,&lDest[0],&lDest[1],&lDest[2],2,0); #endif break; } case ePvFmtBayer16: { #ifdef _USE_BITMAP unsigned char* lDest = (unsigned char*)&lData.Data(); unsigned char* lSrc = (unsigned char*)aFrame->ImageBuffer; const unsigned short* lSrcS = (unsigned short*)aFrame->ImageBuffer; const unsigned short* lSrcEnd = lSrcS + (iWidth * iHeight); const unsigned char lBitshift = (unsigned char)aFrame->BitDepth - 8; // convert to 8 bit while(lSrcS < lSrcEnd) { #ifdef _ppc *(lSrc++) = swap16(*(lSrcS++)) >> lBitshift; #else *(lSrc++) = *(lSrcS++) >> lBitshift; #endif } aFrame->Format = ePvFmtBayer8; PvUtilityColorInterpolate(aFrame,&lDest[0],&lDest[1],&lDest[2],2,lRemainder); #else unsigned char* lDest = iImage->GetData(); unsigned char* lSrc = (unsigned char*)aFrame->ImageBuffer; const unsigned short* lSrcS = (unsigned short*)aFrame->ImageBuffer; const unsigned short* lSrcEnd = lSrcS + (iWidth * iHeight); const unsigned char lBitshift = (unsigned char)aFrame->BitDepth - 8; // convert to 8 bit while(lSrcS < lSrcEnd) { #ifdef _ppc *(lSrc++) = swap16(*(lSrcS++)) >> lBitshift; #else *(lSrc++) = *(lSrcS++) >> lBitshift; #endif } aFrame->Format = ePvFmtBayer8; PvUtilityColorInterpolate(aFrame,&lDest[0],&lDest[1],&lDest[2],2,0); #endif break; } case ePvFmtRgb24: { #ifdef _USE_BITMAP unsigned char* lDest = (unsigned char*)&lData.Data(); const unsigned char* lSrc = (unsigned char*)aFrame->ImageBuffer; const unsigned char* lSrcEnd = lSrc + (iWidth * iHeight * 3); while(lSrc < lSrcEnd) { memcpy(lDest,lSrc,iWidth * 3); lDest += iWidth * 3; lSrc += iWidth * 3; if(lRemainder) lDest+=lRemainder; } #else unsigned char* lDest = iImage->GetData(); const unsigned char* lSrc = (unsigned char*)aFrame->ImageBuffer; const unsigned char* lSrcEnd = lSrc + (iWidth * iHeight * 3); while(lSrc < lSrcEnd) { lDest[0] = lSrc[0]; lDest[1] = lSrc[1]; lDest[2] = lSrc[2]; lSrc += 3; lDest += 3; } #endif break; } case ePvFmtBgr24: { #ifdef _USE_BITMAP unsigned char* lDest = (unsigned char*)&lData.Data(); const unsigned char* lSrc = (unsigned char*)aFrame->ImageBuffer; const unsigned char* lSrcEnd = lSrc + (iWidth * iHeight * 3); while(lSrc < lSrcEnd) { for(unsigned long i = 0;iGetData(); const unsigned char* lSrc = (unsigned char*)aFrame->ImageBuffer; const unsigned char* lSrcEnd = lSrc + (iWidth * iHeight * 3); while(lSrc < lSrcEnd) { lDest[0] = lSrc[2]; lDest[1] = lSrc[1]; lDest[2] = lSrc[0]; lSrc += 3; lDest += 3; } #endif break; } case ePvFmtRgba32: { #ifdef _USE_BITMAP unsigned char* lDest = (unsigned char*)&lData.Data(); const unsigned char* lSrc = (unsigned char*)aFrame->ImageBuffer; const unsigned char* lSrcEnd = lSrc + (iWidth * iHeight * 4); while(lSrc < lSrcEnd) { for(unsigned long i = 0;iGetData(); const unsigned char* lSrc = (unsigned char*)aFrame->ImageBuffer; const unsigned char* lSrcEnd = lSrc + (iWidth * iHeight * 4); while(lSrc < lSrcEnd) { lDest[0] = lSrc[0]; lDest[1] = lSrc[1]; lDest[2] = lSrc[2]; lSrc += 4; lDest += 3; } #endif break; } case ePvFmtBgra32: { #ifdef _USE_BITMAP unsigned char* lDest = (unsigned char*)&lData.Data(); const unsigned char* lSrc = (unsigned char*)aFrame->ImageBuffer; const unsigned char* lSrcEnd = lSrc + (iWidth * iHeight * 4); while(lSrc < lSrcEnd) { for(unsigned long i = 0;iGetData(); const unsigned char* lSrc = (unsigned char*)aFrame->ImageBuffer; const unsigned char* lSrcEnd = lSrc + (iWidth * iHeight * 4); while(lSrc < lSrcEnd) { lDest[0] = lSrc[2]; lDest[1] = lSrc[1]; lDest[2] = lSrc[0]; lSrc += 4; lDest += 3; } #endif break; } case ePvFmtYuv411: { #ifdef _USE_BITMAP unsigned char* lDest = (unsigned char*)&lData.Data(); unsigned char* lDestEnd = lDest + ((iWidth + lRemainder) * iHeight * 3); const unsigned char* pSrc = (unsigned char*) aFrame->ImageBuffer; const unsigned char* pSrcEnd = pSrc + (unsigned int)(iWidth * iHeight * 1.5); if(iColorInterpolate) { int y1,y2,y3,y4,u,v; int r,g,b; while (pSrc < pSrcEnd) { for(unsigned long i = 0;iImageBuffer; const unsigned char* pSrcEnd = pSrc + (unsigned int)(iWidth * iHeight * 1.5); unsigned char* lDest = iImage->GetData(); unsigned char* lDestEnd = lDest + (iWidth * iHeight * 3); int y1,y2,y3,y4,u,v; int r,g,b; while (pSrc < pSrcEnd) { u = pSrc[0]; y1 = pSrc[1]; y2 = pSrc[2]; v = pSrc[3]; y3 = pSrc[4]; y4 = pSrc[5]; pSrc+=6; if(lDest < lDestEnd) { YUV2RGB(y1,u,v,r,g,b); lDest[2] = (unsigned char)b; lDest[1] = (unsigned char)g; lDest[0] = (unsigned char)r; lDest += 3; if(lDest < lDestEnd) { YUV2RGB(y2,u,v,r,g,b); lDest[2] = (unsigned char)b; lDest[1] = (unsigned char)g; lDest[0] = (unsigned char)r; lDest += 3; if(lDest < lDestEnd) { YUV2RGB(y3,u,v,r,g,b); lDest[2] = (unsigned char)b; lDest[1] = (unsigned char)g; lDest[0] = (unsigned char)r; lDest += 3; if(lDest < lDestEnd) { YUV2RGB(y4,u,v,r,g,b); lDest[2] = (unsigned char)b; lDest[1] = (unsigned char)g; lDest[0] = (unsigned char)r; lDest += 3; } } } } } #endif break; } case ePvFmtYuv422: { #ifdef _USE_BITMAP unsigned char* lDest = (unsigned char*)&lData.Data(); unsigned char* lDestEnd = lDest + ((iWidth + lRemainder) * iHeight * 3); const unsigned char* pSrc = (unsigned char*) aFrame->ImageBuffer; const unsigned char* pSrcEnd = pSrc + (iWidth * iHeight * 2); if(iColorInterpolate) { int y1,y2,u,v; int r,g,b; while (pSrc < pSrcEnd) { for(unsigned long i = 0;iImageBuffer; const unsigned char* pSrcEnd = pSrc + (iWidth * iHeight * 2); unsigned char* lDest = iImage->GetData(); unsigned char* lDestEnd = lDest + (iWidth * iHeight * 3); int y1,y2,u,v; int r,g,b; while (pSrc < pSrcEnd) { u = pSrc[0]; y1 = pSrc[1]; v = pSrc[2]; y2 = pSrc[3]; pSrc+=4; if(lDest < lDestEnd) { YUV2RGB(y1,u,v,r,g,b); lDest[2] = (unsigned char)b; lDest[1] = (unsigned char)g; lDest[0] = (unsigned char)r; lDest += 3; if(lDest < lDestEnd) { YUV2RGB(y2,u,v,r,g,b); lDest[2] = (unsigned char)b; lDest[1] = (unsigned char)g; lDest[0] = (unsigned char)r; lDest += 3; } } } #endif break; } case ePvFmtYuv444: { #ifdef _USE_BITMAP unsigned char* lDest = (unsigned char*)&lData.Data(); unsigned char* lDestEnd = lDest + ((iWidth + lRemainder) * iHeight * 3); const unsigned char* pSrc = (unsigned char*) aFrame->ImageBuffer; const unsigned char* pSrcEnd = pSrc + (iWidth * iHeight * 3); if(iColorInterpolate) { int y2,y1,u,v; int r,g,b; r = b = g = 0; while (pSrc < pSrcEnd) { for(unsigned long i = 0;iImageBuffer; const unsigned char* pSrcEnd = pSrc + (iWidth * iHeight * 3); unsigned char* lDest = iImage->GetData(); unsigned char* lDestEnd = lDest + (iWidth * iHeight * 3); int y2,y1,u,v; int r,g,b; r = b = g = 0; while (pSrc < pSrcEnd) { u = pSrc[0]; y1 = pSrc[1]; v = pSrc[2]; y2 = pSrc[4]; pSrc+=6; if(lDest < lDestEnd) { YUV2RGB(y1,u,v,r,g,b); lDest[2] = (unsigned char)b; lDest[1] = (unsigned char)g; lDest[0] = (unsigned char)r; lDest += 3; if(lDest < lDestEnd) { YUV2RGB(y2,u,v,r,g,b); lDest[2] = (unsigned char)b; lDest[1] = (unsigned char)g; lDest[0] = (unsigned char)r; lDest += 3; } } } #endif break; } case ePvFmtMono12Packed: { #ifdef _USE_BITMAP unsigned char* lDest = (unsigned char*)&lData.Data(); const Packed12BitsPixel_t* pSrc = (const Packed12BitsPixel_t*)aFrame->ImageBuffer; const Packed12BitsPixel_t* pSrcEnd = (const Packed12BitsPixel_t*)((unsigned char*)aFrame->ImageBuffer + aFrame->ImageSize); const unsigned char bitshift = (unsigned char)aFrame->BitDepth - 8; unsigned short pixel; while (pSrc < pSrcEnd) { for (unsigned long i = 0; i < iWidth; i+=2) { pixel = (unsigned short)pSrc->LByte << 4; pixel += ((unsigned short)pSrc->MByte & 0xF0) >> 4; lDest[0] = lDest[1] = lDest[2] = pixel >> bitshift; lDest+=3; pixel = (unsigned short)pSrc->UByte << 4; pixel += ((unsigned short)pSrc->MByte & 0x0F) >> 4; lDest[0] = lDest[1] = lDest[2] = pixel >> bitshift; lDest+=3; pSrc++; } if(lRemainder) lDest+=lRemainder; } #else const Packed12BitsPixel_t* pSrc = (const Packed12BitsPixel_t*)aFrame->ImageBuffer; const Packed12BitsPixel_t* pSrcEnd = (const Packed12BitsPixel_t*)((unsigned char*)aFrame->ImageBuffer + aFrame->ImageSize); unsigned char* pDest = iImage->GetData(); const unsigned char bitshift = (unsigned char)aFrame->BitDepth - 8; unsigned short pixel; while (pSrc < pSrcEnd) { for (unsigned long i = 0; i < iWidth; i+=2) { pixel = (unsigned short)pSrc->LByte << 4; pixel += ((unsigned short)pSrc->MByte & 0xF0) >> 4; pDest[0] = pDest[1] = pDest[2] = pixel >> bitshift; pDest += 3; pixel = (unsigned short)pSrc->UByte << 4; pixel += ((unsigned short)pSrc->MByte & 0x0F) >> 4; pDest[0] = pDest[1] = pDest[2] = pixel >> bitshift; pDest += 3; pSrc++; } } #endif break; } case ePvFmtBayer12Packed: { #ifdef _USE_BITMAP const Packed12BitsPixel_t* pSrc = (const Packed12BitsPixel_t*)aFrame->ImageBuffer; const Packed12BitsPixel_t* pSrcEnd = (const Packed12BitsPixel_t*)((unsigned char*)aFrame->ImageBuffer + aFrame->ImageSize); unsigned char* pDest = (unsigned char*)aFrame->ImageBuffer; const unsigned char bitshift = (unsigned char)aFrame->BitDepth - 8; unsigned short pixel1,pixel2; unsigned char* lDest = (unsigned char*)&lData.Data(); while (pSrc < pSrcEnd) { for (unsigned long i = 0; i < iWidth; i+=2) { pixel1 = (unsigned short)pSrc->LByte << 4; pixel1 += ((unsigned short)pSrc->MByte & 0xF0) >> 4; pixel2 = (unsigned short)pSrc->UByte << 4; pixel2 += ((unsigned short)pSrc->MByte & 0x0F) >> 4; *(pDest++) = pixel1 >> bitshift; *(pDest++) = pixel2 >> bitshift; pSrc++; } } aFrame->Format = ePvFmtBayer8; PvUtilityColorInterpolate(aFrame,&lDest[0],&lDest[1],&lDest[2],2,lRemainder); #else const Packed12BitsPixel_t* pSrc = (const Packed12BitsPixel_t*)aFrame->ImageBuffer; const Packed12BitsPixel_t* pSrcEnd = (const Packed12BitsPixel_t*)((unsigned char*)aFrame->ImageBuffer + aFrame->ImageSize); unsigned char* pDest = (unsigned char*)aFrame->ImageBuffer; const unsigned char bitshift = (unsigned char)aFrame->BitDepth - 8; unsigned short pixel1,pixel2; unsigned char* lDest = iImage->GetData(); while (pSrc < pSrcEnd) { for (unsigned long i = 0; i < iWidth; i+=2) { pixel1 = (unsigned short)pSrc->LByte << 4; pixel1 += ((unsigned short)pSrc->MByte & 0xF0) >> 4; pixel2 = (unsigned short)pSrc->UByte << 4; pixel2 += ((unsigned short)pSrc->MByte & 0x0F) >> 4; *(pDest++) = pixel1 >> bitshift; *(pDest++) = pixel2 >> bitshift; pSrc++; } } aFrame->Format = ePvFmtBayer8; PvUtilityColorInterpolate(aFrame,&lDest[0],&lDest[1],&lDest[2],2,0); #endif break; } default: break; } } } /* * Method: AdaptToSize() * Purpose: adapt the view to the image size * Comments: none */ void CImageView::AdaptToSize() { #if defined(__WXMSW__) || defined(__WXMAC__) wxRect lView(GetClientSize()); #else wxRect lView(GetSize()); #endif if(!iScale) { wxRect lImage(wxSize(iWidth,iHeight)); wxPoint lCimage(lImage.GetWidth() / 2 - 1,lImage.GetHeight() / 2 - 1); wxPoint lCview(lView.GetWidth() / 2 - 1,lView.GetHeight() / 2 - 1); int lX,lY; int lXU,lYU; // get the current position of the left/top corner so that we can // set the scrollbar to the same position once they are reset GetViewStart(&lX,&lY); GetScrollPixelsPerUnit(&lXU,&lYU); if(lView.GetWidth() > iWidth) iLeft = lCview.x - lCimage.x; else iLeft = 0; if(lView.GetHeight() > iHeight) iTop = lCview.y - lCimage.y; else iTop = 0; int lW = max(lView.GetWidth(),iWidth); int lH = max(lView.GetHeight(),iHeight); if(lW != lView.GetWidth() && lH != lView.GetHeight()) SetScrollbars(1,1,max(0,lW),max(0,lH),lX * lXU,lY * lYU,true); else if(lW != lView.GetWidth()) SetScrollbars(1,1,max(0,lW),0,lX * lXU,lY * lYU,true); else if(lH != lView.GetHeight()) SetScrollbars(1,1,0,max(0,lH),lX * lXU,lY * lYU,true); else SetScrollbars(1,1,0,0,lX * lXU,lY * lYU,true); } else { iLeft = 0; iTop = 0; iWRatio = (float)lView.GetWidth() / (float)iWidth; iHRatio = (float)lView.GetHeight() / (float)iHeight; SetScrollbars(1,1,0,0,0,0,true); } } /* * Method: OnDraw() * Purpose: called when the view need to be redraw * Comments: none */ void CImageView::OnDraw(wxDC& aDC) { if(iScale) { #ifdef __WXMSW__ SetStretchBltMode((HDC)aDC.GetHDC(),COLORONCOLOR); #endif aDC.SetUserScale(iWRatio,iHRatio); } #ifdef _USE_BITMAP if(iBitmap) aDC.DrawBitmap(*iBitmap,iLeft,iTop,false); #else // blit the image if(iImage) { if(iFreshData) { delete iBitmap; iBitmap = new wxBitmap(*iImage); } if(iBitmap) aDC.DrawBitmap(*iBitmap,iLeft,iTop,false); } #endif // reset the fresh data flag iFreshData = false; } /* * Method: OnSize() * Purpose: called when the window size is been changed * Comments: none */ void CImageView::OnSize(wxSizeEvent& aEvent) { AdaptToSize(); Refresh(); } /* * Method: OnAdapt() * Purpose: called when the view need to be adapted due to * a change in the image size * Comments: none */ void CImageView::OnAdapt(wxCommandEvent& aEvent) { AdaptToSize(); Refresh(); } /* * Method: OnRightClick() * Purpose: called when the right button of the mouse * is been pressed * Comments: none */ void CImageView::OnRightClick(wxMouseEvent& aEvent) { // forward the event to the parent GetParent()->GetEventHandler()->ProcessEvent(aEvent); } /* * Method: OnEraseBackground() * Purpose: called when the background of the frame should be * erased * Comments: none */ void CImageView::OnEraseBackground(wxEraseEvent& aEvent) { wxClientDC* lDC = NULL; wxSize lSize = GetClientSize(); wxColour lColor = GetBackgroundColour(); wxRect lRect(iLeft,iTop,iWidth,iHeight); wxRegion lRegion(0,0,lSize.GetWidth(),lSize.GetHeight()); // get or create DC if (!(lDC = (wxClientDC*)aEvent.GetDC())) lDC = new wxClientDC(this); // substract with the area occupied by the image lRegion.Subtract(lRect); // set the clipping to be applied lDC->SetClippingRegion(lRegion); // set the brush lDC->SetBrush(wxBrush(lColor)); // draw the rectangle lDC->DrawRectangle(0,0,lSize.GetWidth(),lSize.GetHeight()); // then destroy the clipping lDC->DestroyClippingRegion(); // delete DC if created if (!aEvent.GetDC()) delete lDC; }