From ea21b36836abd6c2bb6d139c9d4b8149acdc4785 Mon Sep 17 00:00:00 2001 From: Yulong Bai Date: Tue, 13 Feb 2018 16:33:32 +0100 Subject: [PATCH] QFusionStyle: fix the checkbox rendering in low DPI settings Fixed some regression of checkbox's size brought in by c9f68a5. Using qreal and QRectF to avoid the round error accumulation of sizes in low dpi situations. Tweaked the look of the check mark. Task-number: QTBUG-66343 Change-Id: I8f68144f60437907701021bb43ee736dfcb7241f Reviewed-by: Richard Moe Gustavsen --- src/widgets/styles/qfusionstyle.cpp | 35 ++++++++++++++++------------- 1 file changed, 20 insertions(+), 15 deletions(-) diff --git a/src/widgets/styles/qfusionstyle.cpp b/src/widgets/styles/qfusionstyle.cpp index 554c45d570..6873ca876e 100644 --- a/src/widgets/styles/qfusionstyle.cpp +++ b/src/widgets/styles/qfusionstyle.cpp @@ -763,7 +763,7 @@ void QFusionStyle::drawPrimitive(PrimitiveElement elem, painter->drawRect(rect); QColor checkMarkColor = option->palette.text().color().darker(120); - const int checkMarkPadding = 1 + rect.width() * 0.2; // at least one pixel padding + const qreal checkMarkPadding = 1 + rect.width() * 0.13; // at least one pixel padding if (checkbox->state & State_NoChange) { gradient = QLinearGradient(rect.topLeft(), rect.bottomLeft()); @@ -775,20 +775,23 @@ void QFusionStyle::drawPrimitive(PrimitiveElement elem, painter->setPen(QPen(checkMarkColor, 1)); painter->setBrush(gradient); painter->drawRect(rect.adjusted(checkMarkPadding, checkMarkPadding, -checkMarkPadding, -checkMarkPadding)); + } else if (checkbox->state & State_On) { - qreal penWidth = QStyleHelper::dpiScaled(1.8); - penWidth = qMax(penWidth , 0.18 * rect.height()); - penWidth = qMin(penWidth , 0.30 * rect.height()); + qreal penWidth = QStyleHelper::dpiScaled(1.5); + penWidth = qMax(penWidth , 0.13 * rect.height()); + penWidth = qMin(penWidth , 0.20 * rect.height()); + QPen checkPen = QPen(checkMarkColor, penWidth); checkMarkColor.setAlpha(210); - painter->setPen(QPen(checkMarkColor, penWidth)); + painter->translate(dpiScaled(-0.8), dpiScaled(0.5)); + painter->setPen(checkPen); painter->setBrush(Qt::NoBrush); - painter->translate(-0.8, 0.5); // Draw checkmark QPainterPath path; - path.moveTo(1.33 * checkMarkPadding, rect.height() / 2.0); - path.lineTo(rect.width() / 2.0, rect.height() - checkMarkPadding); - path.lineTo(rect.width() - checkMarkPadding * 0.92, checkMarkPadding); + const qreal rectHeight = rect.height(); // assuming height equals width + path.moveTo(checkMarkPadding + rectHeight * 0.11, rectHeight * 0.47); + path.lineTo(rectHeight * 0.5, rectHeight - checkMarkPadding); + path.lineTo(rectHeight - checkMarkPadding, checkMarkPadding); painter->drawPath(path.translated(rect.topLeft())); } } @@ -1559,8 +1562,8 @@ void QFusionStyle::drawControl(ControlElement element, const QStyleOption *optio bool ignoreCheckMark = false; const int checkColHOffset = windowsItemHMargin + windowsItemFrame - 1; - int checkcol = qMax(menuItem->rect.height() * 0.7, - qMax(menuItem->maxIconWidth * 1.0, dpiScaled(17))); // icon checkbox's highlihgt column width + int checkcol = qMax(menuItem->rect.height() * 0.79, + qMax(menuItem->maxIconWidth * 1.0, dpiScaled(21))); // icon checkbox's highlihgt column width if ( #if QT_CONFIG(combobox) qobject_cast(widget) || @@ -1569,10 +1572,12 @@ void QFusionStyle::drawControl(ControlElement element, const QStyleOption *optio ignoreCheckMark = true; //ignore the checkmarks provided by the QComboMenuDelegate if (!ignoreCheckMark) { - // Check - const int boxMargin = dpiScaled(4); - const int boxWidth = checkcol - 2 * boxMargin; - QRect checkRect(option->rect.left() + boxMargin + checkColHOffset, option->rect.center().y() - boxWidth/2 + 1, boxWidth, boxWidth); + // Check, using qreal and QRectF to avoid error accumulation + const qreal boxMargin = dpiScaled(3.5); + const qreal boxWidth = checkcol - 2 * boxMargin; + QRectF checkRectF(option->rect.left() + boxMargin + checkColHOffset, option->rect.center().y() - boxWidth/2 + 1, boxWidth, boxWidth); + QRect checkRect = checkRectF.toRect(); + checkRect.setWidth(checkRect.height()); // avoid .toRect() round error results in non-perfect square checkRect = visualRect(menuItem->direction, menuItem->rect, checkRect); if (checkable) { if (menuItem->checkType & QStyleOptionMenuItem::Exclusive) {