QWindowsXPStyle: Enlarge QLineEdit/QComboBox when High DPI scaling is active.

In QWindowsXPStyle::sizeFromContents(), scale the margins using the
devicePixelRatio and round the height up. Typically increases
the height by 2 pixels when the device pixel ratio equals 2.

Change-Id: I446ad518c3808a6454a08db7b66a942d37c1703f
Task-number: QTBUG-49374
Reviewed-by: Alessandro Portale <alessandro.portale@theqtcompany.com>
This commit is contained in:
Friedemann Kleint 2016-04-08 14:11:48 +02:00
parent 5fb2dceab4
commit cec15a89d0

View File

@ -3793,10 +3793,12 @@ QSize QWindowsXPStyle::sizeFromContents(ContentsType ct, const QStyleOption *opt
{
XPThemeData buttontheme(widget, 0, QWindowsXPStylePrivate::ButtonTheme, BP_PUSHBUTTON, PBS_NORMAL);
if (buttontheme.isValid()) {
const QMarginsF borderSize = buttontheme.margins() / QWindowsXPStylePrivate::devicePixelRatio(widget);
const qreal devicePixelRatio = QWindowsXPStylePrivate::devicePixelRatio(widget);
const QMarginsF borderSize = buttontheme.margins() / devicePixelRatio;
if (!borderSize.isNull()) {
sz.rwidth() += qRound(borderSize.left() + borderSize.right() - 2);
sz.rheight() += qRound(borderSize.bottom() + borderSize.top() - 2);
const qreal margin = qreal(2) / devicePixelRatio;
sz.rwidth() += qRound(borderSize.left() + borderSize.right() - margin);
sz.rheight() += int(borderSize.bottom() + borderSize.top() - margin + devicePixelRatio - 1);
}
const int textMargins = 2*(proxy()->pixelMetric(PM_FocusFrameHMargin) + 1);
sz += QSize(qMax(pixelMetric(QStyle::PM_ScrollBarExtent, option, widget)