54 lines
1.4 KiB
C++
54 lines
1.4 KiB
C++
#include "SARibbonTabBar.h"
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#include <QStyleOptionTab>
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#include <QFontMetrics>
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SARibbonTabBar::SARibbonTabBar(QWidget* parent) : QTabBar(parent), m_tabMargin(6, 0, 0, 0)
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{
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setExpanding(false);
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}
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const QMargins& SARibbonTabBar::tabMargin() const
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{
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return (m_tabMargin);
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}
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void SARibbonTabBar::setTabMargin(const QMargins& tabMargin)
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{
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m_tabMargin = tabMargin;
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}
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/**
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* @brief tab的尺寸预估
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*
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* 有别于系统默认的tabbar，SARibbonTabBar的tab高度和tabbar高度一致，且不考虑纵向分布情况
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* @param index
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* @return
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*/
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QSize SARibbonTabBar::tabSizeHint(int index) const
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{
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if (index < 0) {
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return QSize();
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}
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QStyleOptionTab opt;
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initStyleOption(&opt, index);
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int hframe = style()->pixelMetric(QStyle::PM_TabBarTabHSpace, &opt, this);
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const QFontMetrics fm = fontMetrics();
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int widgetWidth = 0;
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int padding = 0;
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if (!opt.leftButtonSize.isEmpty()) {
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padding += 4;
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widgetWidth += opt.leftButtonSize.width();
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}
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if (!opt.rightButtonSize.isEmpty()) {
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padding += 4;
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widgetWidth += opt.rightButtonSize.width();
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}
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if (!opt.icon.isNull()) {
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padding += 4;
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}
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const int textWidth = fm.size(Qt::TextShowMnemonic, opt.text).width();
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QSize csz = QSize(textWidth + opt.iconSize.width() + hframe + widgetWidth + padding, height());
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return style()->sizeFromContents(QStyle::CT_TabBarTab, &opt, csz, this);
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}
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