void tst_QGraphicsLinearLayout::heightForWidth() { QFETCH(bool, hfw); QFETCH(bool, nested); QGraphicsScene scene; QGraphicsWidget *form = new QGraphicsWidget; scene.addItem(form); QGraphicsLinearLayout *outerlayout = 0; if (nested) { outerlayout = new QGraphicsLinearLayout(form); for (int i = 0; i < 8; i++) { QGraphicsLinearLayout *layout = new QGraphicsLinearLayout(Qt::Vertical); outerlayout->addItem(layout); outerlayout = layout; } } QGraphicsLinearLayout *qlayout = 0; qlayout = new QGraphicsLinearLayout(Qt::Vertical); if (nested) outerlayout->addItem(qlayout); else form->setLayout(qlayout); MySquareWidget *widget = new MySquareWidget; for (int i = 0; i < 1; i++) { widget = new MySquareWidget; QSizePolicy sizepolicy = widget->sizePolicy(); sizepolicy.setHeightForWidth(hfw); widget->setSizePolicy(sizepolicy); qlayout->addItem(widget); } // make sure only one iteration is done. // run with tst_QGraphicsLinearLayout.exe "heightForWidth" -tickcounter -iterations 6 // this will iterate 6 times the whole test, (not only the benchmark) // which should reduce warmup time and give a realistic picture of the performance of // effectiveSizeHint() QSizeF constraint(hfw ? 100 : -1, -1); QBENCHMARK { (void)form->effectiveSizeHint(Qt::PreferredSize, constraint); } }
void Pt_MLayout::heightForWidthPerformance() { QFETCH(bool, qtOnly); QFETCH(bool, hfw); QFETCH(bool, nested); QGraphicsLinearLayout *outerlayout = NULL; if(nested) { outerlayout = new QGraphicsLinearLayout(m_form); for(int i = 0; i < 5; i++) { QGraphicsLinearLayout *layout = new QGraphicsLinearLayout(Qt::Vertical); outerlayout->addItem(layout); outerlayout = layout; } } QGraphicsLinearLayout *qlayout = NULL; MLayout *layout = NULL; MLinearLayoutPolicy *policy = NULL; if(qtOnly) { qlayout = new QGraphicsLinearLayout(Qt::Vertical); if (nested) outerlayout->addItem(qlayout); else m_form->setLayout(qlayout); } else { layout = new MLayout; policy = new MLinearLayoutPolicy(layout, Qt::Vertical); if (nested) outerlayout->addItem(layout); else m_form->setLayout(layout); } for(int i = 0; i < 1; i++) { MySquareWidget *widget = new MySquareWidget; QSizePolicy sizepolicy = widget->sizePolicy(); sizepolicy.setHeightForWidth(hfw); widget->setSizePolicy(sizepolicy); if (qtOnly) qlayout->addItem(widget); else policy->addItem(widget); } while (MTheme::hasPendingRequests()) { usleep(10); QCoreApplication::processEvents(); } QBENCHMARK { if (qtOnly) { qlayout->invalidate(); QCoreApplication::processEvents(); (void)qlayout->preferredSize(); } else { layout->invalidate(); QCoreApplication::processEvents(); (void)layout->preferredSize(); } } }