Impala Documentation

virtual void Impala::Visualization::TimeLineViewStrip::InitDisplayFunc ( ) [inline, virtual]

Definition at line 249 of file TimeLineViewStrip.h.

References FirstVisibleFrame(), OglGui::Window::InitDisplayFunc(), Impala::Core::Stream::RgbDataSrc::LastFrame(), LastVisibleFrame(), mBothMpg, mCurrentViewOnTop, mFrameError, mMinViewW, mOldSpace, mOldStartFrame, mRgbDataSrc, mShow, mViewers, mViewFrameStep, ShowCurrentViewOnTop(), OglGui::ZoomShiftRuler::Unit2Pixel(), ViewStripClearView(), ViewStripClearViews(), ViewStripCopyImageFromView(), ViewStripCreateImage(), ViewStripFindIndex(), ViewStripFindIndexBwd(), and ViewStripNewPositionNeedsIm().

00250     {
00251         WindowTimeLine::InitDisplayFunc();
00252         if (!mShow || !mRgbDataSrc)
00253             return;
00254 
00255         int space = Unit2Pixel(mViewFrameStep*40)-Unit2Pixel(0);
00256         if (space < mMinViewW && mOldSpace >= mMinViewW)
00257             ViewStripClearViews(0, mViewers.size());
00258 
00259         if ((mOldSpace = space) < mMinViewW)
00260         {
00261             if (mCurrentViewOnTop==2)
00262                 ShowCurrentViewOnTop();
00263             else
00264                 ViewStripClearView(mViewers.size()-1);
00265             mOldStartFrame = -1;
00266             return;
00267         }
00268 
00269         int err = mBothMpg ? 1 : mFrameError;
00270 
00271         int startFrame = FirstVisibleFrame()+err-mViewFrameStep;
00272         if (startFrame < 0)
00273             startFrame = 0;
00274         int endFrame   = LastVisibleFrame()+err+mViewFrameStep;
00275         if (endFrame > mRgbDataSrc->LastFrame())
00276             endFrame   = mRgbDataSrc->LastFrame();
00277         int range      = endFrame-startFrame-1;
00278 
00279         if (range/mViewFrameStep >= mViewers.size())
00280             range = (mViewers.size()*mViewFrameStep)-1;
00281 
00282         int i, idx, frameNr, vCnt;
00283         if (mOldStartFrame <= startFrame)
00284         {
00285             for (i=0, vCnt=-1; i <= range; i++)
00286             {
00287                 if ((frameNr = i+startFrame) % mViewFrameStep)
00288                     continue;
00289                 if (!ViewStripNewPositionNeedsIm(++vCnt, frameNr, space))
00290                     continue;
00291                 if ((idx = ViewStripFindIndex(frameNr,vCnt))!=-1)
00292                     ViewStripCopyImageFromView(vCnt,idx,frameNr);
00293                 else
00294                     ViewStripCreateImage(vCnt,frameNr);
00295             }
00296             ViewStripClearViews(vCnt+1, mViewers.size());
00297         }
00298         else
00299         {
00300             for (vCnt=0,i=range; i>=0; i--)
00301                 if (!((i+startFrame) % mViewFrameStep))
00302                     vCnt++;
00303             if (!vCnt) return;
00304             int lastV = vCnt;
00305             for (i=range; i>=0; i--)
00306             {
00307                 if ((frameNr = i+startFrame) % mViewFrameStep)
00308                     continue;
00309                 if (!ViewStripNewPositionNeedsIm(--vCnt, frameNr, space))
00310                     continue;
00311                 if ((idx = ViewStripFindIndexBwd(frameNr,vCnt))!=-1)
00312                     ViewStripCopyImageFromView(vCnt,idx,frameNr);
00313                 else
00314                     ViewStripCreateImage(vCnt,frameNr);
00315             }
00316             ViewStripClearViews(lastV, mViewers.size());
00317         }
00318 
00319         if (mCurrentViewOnTop)
00320             ShowCurrentViewOnTop();
00321 
00322         mOldStartFrame = startFrame;
00323     }

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