| void OglGui::DocFlowDrag::FlowDragDisplay | ( | ) | [inline] |
Definition at line 77 of file DocFlowDrag.h.
References ClampDocY(), OglGui::DocDimensions::DocY(), OglGui::OglWindow::H(), mFlowDoc, mFlowDragStartTime, mFlowing, mFlowPageExtra, mFlowPageThresh, mFlowSpeed, mFlowStartY, mFlowWnd, mFriction, mKineticScrolling, mOldDocY, OglGui::RepeatTimer::RepeatTime(), OglGui::OglWindow::SetAlwaysDraw(), and OglGui::OglWindow::UpdateScene().
Referenced by Impala::Visualization::ImageSetIdxGrid::DisplayFunc(), and Impala::Visualization::DirImViewer::DisplayFunc().
00078 { 00079 if (!mFlowing) 00080 return; 00081 00082 int docY = mFlowDoc->DocY(); 00083 int wndH = mFlowWnd->H(); 00084 float d; 00085 00086 if (mOldDocY != docY) 00087 { 00088 mFlowWnd->SetAlwaysDraw(mFlowing=false); 00089 return; 00090 } 00091 00092 if (mKineticScrolling) 00093 { 00094 float t = (OglClock() - mFlowDragStartTime); 00095 float endT = fabs(mFlowSpeed / mFriction); 00096 //printf("t %f endT %f flowSpeed %f\n", t, endT, mFlowSpeed); 00097 if (t >= endT) 00098 { 00099 t = endT; 00100 mFlowWnd->SetAlwaysDraw(mFlowing=false); 00101 mFlowWnd->UpdateScene(); 00102 } 00103 d = mFlowSpeed*t + (0.5*(mFlowSpeed>0?1:-1)*mFriction * (t*t)); 00104 docY = mFlowStartY - d; 00105 } 00106 else 00107 { 00108 // To prevent rushing by images that cause flicker 00109 if (mFlowSpeed > mFlowPageThresh || mFlowSpeed <-mFlowPageThresh) 00110 { 00111 d = (mFlowSpeed>0) ? -wndH+mFlowPageExtra : wndH-mFlowPageExtra; 00112 if (RepeatTime()) 00113 docY += d; 00114 } 00115 else 00116 { 00117 d = -mFlowSpeed * (OglClock()-mFlowDragStartTime); 00118 docY = mFlowStartY + d; 00119 } 00120 } 00121 ClampDocY(docY); 00122 mOldDocY = mFlowDoc->DocY(); 00123 }
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