QSize TabBar::tabSizeHint(int index, bool fast) const
{
if (!m_window->isVisible()) {
// Don't calculate it when window is not visible
// It produces invalid size anyway
return QSize(-1, -1);
}
const int pinnedTabWidth = comboTabBarPixelMetric(ComboTabBar::PinnedTabWidth);
const int minTabWidth = comboTabBarPixelMetric(ComboTabBar::NormalTabMinimumWidth);
QSize size = ComboTabBar::tabSizeHint(index);
// The overflowed tabs have same size and we can use this fast method
if (fast) {
size.setWidth(index >= pinnedTabsCount() ? minTabWidth : pinnedTabWidth);
return size;
}
WebTab* webTab = qobject_cast<WebTab*>(m_tabWidget->widget(index));
TabBar* tabBar = const_cast <TabBar*>(this);
if (webTab && webTab->isPinned()) {
size.setWidth(pinnedTabWidth);
}
else {
int availableWidth = mainTabBarWidth() - comboTabBarPixelMetric(ExtraReservedWidth);
if (availableWidth < 0) {
return QSize(-1, -1);
}
const int normalTabsCount = ComboTabBar::normalTabsCount();
const int maxTabWidth = comboTabBarPixelMetric(ComboTabBar::NormalTabMaximumWidth);
if (availableWidth >= maxTabWidth * normalTabsCount) {
m_normalTabWidth = maxTabWidth;
size.setWidth(m_normalTabWidth);
}
else if (normalTabsCount > 0) {
const int minActiveTabWidth = comboTabBarPixelMetric(ComboTabBar::ActiveTabMinimumWidth);
int maxWidthForTab = availableWidth / normalTabsCount;
int realTabWidth = maxWidthForTab;
bool adjustingActiveTab = false;
if (realTabWidth < minActiveTabWidth) {
maxWidthForTab = normalTabsCount > 1 ? (availableWidth - minActiveTabWidth) / (normalTabsCount - 1) : 0;
realTabWidth = minActiveTabWidth;
adjustingActiveTab = true;
}
bool tryAdjusting = availableWidth >= minTabWidth * normalTabsCount;
if (m_showCloseOnInactive != 1 && tabsClosable() && availableWidth < (minTabWidth + 25) * normalTabsCount) {
// Hiding close buttons to save some space
tabBar->setTabsClosable(false);
tabBar->showCloseButton(currentIndex());
}
if (m_showCloseOnInactive == 1) {
// Always showing close buttons
tabBar->setTabsClosable(true);
tabBar->showCloseButton(currentIndex());
}
if (tryAdjusting) {
m_normalTabWidth = maxWidthForTab;
// Fill any empty space (we've got from rounding) with active tab
if (index == mainTabBarCurrentIndex()) {
if (adjustingActiveTab) {
m_activeTabWidth = (availableWidth - minActiveTabWidth
- maxWidthForTab * (normalTabsCount - 1)) + realTabWidth;
}
else {
m_activeTabWidth = (availableWidth - maxWidthForTab * normalTabsCount) + maxWidthForTab;
}
size.setWidth(m_activeTabWidth);
}
else {
size.setWidth(m_normalTabWidth);
}
}
}
// Restore close buttons according to preferences
if (m_showCloseOnInactive != 2 && !tabsClosable() && availableWidth >= (minTabWidth + 25) * normalTabsCount) {
tabBar->setTabsClosable(true);
// Hide close buttons on pinned tabs
for (int i = 0; i < count(); ++i) {
tabBar->updatePinnedTabCloseButton(i);
}
}
}
if (index == count() - 1) {
WebTab* lastMainActiveTab = qobject_cast<WebTab*>(m_tabWidget->widget(mainTabBarCurrentIndex()));
int xForAddTabButton = cornerWidth(Qt::TopLeftCorner) + pinTabBarWidth() + normalTabsCount() * m_normalTabWidth;
if (lastMainActiveTab && m_activeTabWidth > m_normalTabWidth) {
xForAddTabButton += m_activeTabWidth - m_normalTabWidth;
}
if (QApplication::layoutDirection() == Qt::RightToLeft) {
xForAddTabButton = width() - xForAddTabButton;
}
emit tabBar->moveAddTabButton(xForAddTabButton);
}
return size;
}
QSize TabBar::tabSizeHint(int index) const
{
if (!isVisible()) {
// Don't calculate it when tabbar is not visible
// It produces invalid size anyway
return QSize(-1, -1);
}
static int PINNED_TAB_WIDTH = -1;
static int MINIMUM_ACTIVE_TAB_WIDTH = -1;
if (PINNED_TAB_WIDTH == -1) {
PINNED_TAB_WIDTH = 16 + style()->pixelMetric(QStyle::PM_TabBarTabHSpace, 0, this);
MINIMUM_ACTIVE_TAB_WIDTH = PINNED_TAB_WIDTH + style()->pixelMetric(QStyle::PM_TabCloseIndicatorWidth, 0, this);
// just a hack: we want to be sure buttonAddTab and buttonListTabs can't cover the active tab
MINIMUM_ACTIVE_TAB_WIDTH = qMax(MINIMUM_ACTIVE_TAB_WIDTH, 6 + m_tabWidget->buttonListTabs()->width() + m_tabWidget->buttonAddTab()->width());
}
QSize size = QTabBar::tabSizeHint(index);
WebTab* webTab = qobject_cast<WebTab*>(m_tabWidget->widget(index));
TabBar* tabBar = const_cast <TabBar*>(this);
bool adjustingActiveTab = false;
if (webTab && webTab->isPinned()) {
size.setWidth(PINNED_TAB_WIDTH);
}
else {
int availableWidth = width() - (PINNED_TAB_WIDTH * m_pinnedTabsCount) - m_tabWidget->buttonListTabs()->width() - m_tabWidget->buttonAddTab()->width();
int normalTabsCount = count() - m_pinnedTabsCount;
if (availableWidth >= MAXIMUM_TAB_WIDTH * normalTabsCount) {
m_normalTabWidth = MAXIMUM_TAB_WIDTH;
size.setWidth(m_normalTabWidth);
}
else if (availableWidth < MINIMUM_TAB_WIDTH * normalTabsCount) {
// Tabs don't fit at all in tabbar even with MINIMUM_TAB_WIDTH
// We will try to use as low width of tabs as possible
// to try avoid overflowing tabs into tabbar buttons
int maxWidthForTab = availableWidth / normalTabsCount;
m_activeTabWidth = maxWidthForTab;
if (m_activeTabWidth < MINIMUM_ACTIVE_TAB_WIDTH) {
maxWidthForTab = (availableWidth - MINIMUM_ACTIVE_TAB_WIDTH) / (normalTabsCount - 1);
m_activeTabWidth = MINIMUM_ACTIVE_TAB_WIDTH;
adjustingActiveTab = true;
}
if (maxWidthForTab < PINNED_TAB_WIDTH) {
// FIXME: It overflows now
m_normalTabWidth = PINNED_TAB_WIDTH;
if (index == currentIndex()) {
size.setWidth(m_activeTabWidth);
}
else {
size.setWidth(m_normalTabWidth);
}
}
else {
m_normalTabWidth = maxWidthForTab;
// Fill any empty space (we've got from rounding) with active tab
if (index == currentIndex()) {
if (adjustingActiveTab) {
m_activeTabWidth = (availableWidth - MINIMUM_ACTIVE_TAB_WIDTH
- maxWidthForTab * (normalTabsCount - 1)) + m_activeTabWidth;
}
else {
m_activeTabWidth = (availableWidth - maxWidthForTab * normalTabsCount) + maxWidthForTab;
}
adjustingActiveTab = true;
size.setWidth(m_activeTabWidth);
}
else {
size.setWidth(m_normalTabWidth);
}
if (tabsClosable()) {
// Hiding close buttons to save some space
tabBar->setTabsClosable(false);
tabBar->showCloseButton(currentIndex());
}
}
}
else {
int maxWidthForTab = availableWidth / normalTabsCount;
m_activeTabWidth = maxWidthForTab;
if (m_activeTabWidth < MINIMUM_ACTIVE_TAB_WIDTH) {
maxWidthForTab = (availableWidth - MINIMUM_ACTIVE_TAB_WIDTH) / (normalTabsCount - 1);
m_activeTabWidth = MINIMUM_ACTIVE_TAB_WIDTH;
adjustingActiveTab = true;
}
m_normalTabWidth = maxWidthForTab;
// Fill any empty space (we've got from rounding) with active tab
if (index == currentIndex()) {
if (adjustingActiveTab) {
m_activeTabWidth = (availableWidth - MINIMUM_ACTIVE_TAB_WIDTH
- maxWidthForTab * (normalTabsCount - 1)) + m_activeTabWidth;
}
else {
m_activeTabWidth = (availableWidth - maxWidthForTab * normalTabsCount) + maxWidthForTab;
}
adjustingActiveTab = true;
size.setWidth(m_activeTabWidth);
}
else {
size.setWidth(m_normalTabWidth);
}
// Restore close buttons according to preferences
if (!tabsClosable()) {
tabBar->setTabsClosable(true);
// Hide close buttons on pinned tabs
for (int i = 0; i < count(); ++i) {
tabBar->updatePinnedTabCloseButton(i);
}
}
}
}
if (index == currentIndex()) {
int xForAddTabButton = (PINNED_TAB_WIDTH * m_pinnedTabsCount) + (count() - m_pinnedTabsCount) * (m_normalTabWidth);
if (adjustingActiveTab) {
xForAddTabButton += m_activeTabWidth - m_normalTabWidth;
}
// RTL Support
if (QApplication::layoutDirection() == Qt::RightToLeft) {
xForAddTabButton = width() - xForAddTabButton;
}
emit tabBar->moveAddTabButton(xForAddTabButton);
}
return size;
}
