C++ (Cpp) QCPLayoutGrid::setColumnStretchFactor Examples

Example #1

File: mainwindow.cpp Project: pabigot/qcustomplot

void MainWindow::genLayoutsystem_MultipleAxisRects()
{
  resetPlot(false);
  
  customPlot->plotLayout()->clear(); // let's start from scratch and remove the default axis rect
  // add the first axis rect in second row (row index 1):
  QCPAxisRect *topAxisRect = new QCPAxisRect(customPlot);
  customPlot->plotLayout()->addElement(1, 0, topAxisRect);
  // create a sub layout that we'll place in first row:
  QCPLayoutGrid *subLayout = new QCPLayoutGrid;
  customPlot->plotLayout()->addElement(0, 0, subLayout);
  // add two axis rects in the sub layout next to each other:
  QCPAxisRect *leftAxisRect = new QCPAxisRect(customPlot);
  QCPAxisRect *rightAxisRect = new QCPAxisRect(customPlot);
  subLayout->addElement(0, 0, leftAxisRect);
  subLayout->addElement(0, 1, rightAxisRect);
  subLayout->setColumnStretchFactor(0, 3); // left axis rect shall have 60% of width
  subLayout->setColumnStretchFactor(1, 2); // right one only 40% (3:2 = 60:40)
  // since we've created the axis rects and axes from scratch, we need to place them on
  // according layers, if we don't want the grid to be drawn above the axes etc.
  // place the axis on "axes" layer and grids on the "grid" layer, which is below "axes":
  QList<QCPAxis*> allAxes;
  allAxes << topAxisRect->axes() << leftAxisRect->axes() << rightAxisRect->axes();
  foreach (QCPAxis *axis, allAxes)
  {
    axis->setLayer("axes");
    axis->grid()->setLayer("grid");
  }