mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-22 23:50:19 +00:00
cbf1fd3e61
On macOS, the first time TabBar::tabSizeHint is called, the count is reportedly zero, and results in a floating point exception on x64.
130 lines
3.8 KiB
C++
130 lines
3.8 KiB
C++
/*
|
|
* Copyright (c) 2024, Tim Flynn <trflynn89@serenityos.org>
|
|
* Copyright (c) 2024, Jamie Mansfield <jmansfield@cadixdev.org>
|
|
* Copyright (c) 2024, Sam Atkins <sam@ladybird.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include "Tab.h"
|
|
#include <AK/StdLibExtras.h>
|
|
#include <AK/TypeCasts.h>
|
|
#include <Ladybird/Qt/TabBar.h>
|
|
#include <QContextMenuEvent>
|
|
#include <QEvent>
|
|
#include <QPushButton>
|
|
#include <QStylePainter>
|
|
|
|
namespace Ladybird {
|
|
|
|
TabBar::TabBar(QWidget* parent)
|
|
: QTabBar(parent)
|
|
{
|
|
}
|
|
|
|
QSize TabBar::tabSizeHint(int index) const
|
|
{
|
|
auto hint = QTabBar::tabSizeHint(index);
|
|
|
|
if (auto count = this->count(); count > 0) {
|
|
auto width = this->width() / count;
|
|
width = min(225, width);
|
|
width = max(128, width);
|
|
|
|
hint.setWidth(width);
|
|
}
|
|
|
|
return hint;
|
|
}
|
|
|
|
void TabBar::contextMenuEvent(QContextMenuEvent* event)
|
|
{
|
|
auto* tab_widget = verify_cast<QTabWidget>(this->parent());
|
|
auto* tab = verify_cast<Tab>(tab_widget->widget(tabAt(event->pos())));
|
|
if (tab)
|
|
tab->context_menu()->exec(event->globalPos());
|
|
}
|
|
|
|
TabWidget::TabWidget(QWidget* parent)
|
|
: QTabWidget(parent)
|
|
{
|
|
// This must be called first, otherwise several of the options below have no effect.
|
|
setTabBar(new TabBar(this));
|
|
|
|
setDocumentMode(true);
|
|
setElideMode(Qt::TextElideMode::ElideRight);
|
|
setMovable(true);
|
|
setTabsClosable(true);
|
|
|
|
setStyle(new TabStyle(this));
|
|
|
|
installEventFilter(parent);
|
|
}
|
|
|
|
void TabWidget::paintEvent(QPaintEvent*)
|
|
{
|
|
auto prepare_style_options = [](QTabBar* tab_bar, QSize widget_size) {
|
|
QStyleOptionTabBarBase style_options;
|
|
QStyleOptionTab tab_overlap;
|
|
tab_overlap.shape = tab_bar->shape();
|
|
auto overlap = tab_bar->style()->pixelMetric(QStyle::PM_TabBarBaseOverlap, &tab_overlap, tab_bar);
|
|
style_options.initFrom(tab_bar);
|
|
style_options.shape = tab_bar->shape();
|
|
style_options.documentMode = tab_bar->documentMode();
|
|
// NOTE: This assumes the tab bar is at the top of the tab widget.
|
|
style_options.rect = { 0, widget_size.height() - overlap, widget_size.width(), overlap };
|
|
|
|
return style_options;
|
|
};
|
|
|
|
QStylePainter painter { this, tabBar() };
|
|
if (auto* widget = cornerWidget(Qt::TopRightCorner)) {
|
|
// Manually paint the background for the area where the "new tab" button would have been
|
|
// if we hadn't relocated it in `TabStyle::subElementRect()`.
|
|
auto style_options = prepare_style_options(tabBar(), widget->size());
|
|
style_options.rect.translate(tabBar()->rect().width(), widget->y());
|
|
painter.drawPrimitive(QStyle::PE_FrameTabBarBase, style_options);
|
|
}
|
|
}
|
|
|
|
TabBarButton::TabBarButton(QIcon const& icon, QWidget* parent)
|
|
: QPushButton(icon, {}, parent)
|
|
{
|
|
resize({ 20, 20 });
|
|
setFlat(true);
|
|
}
|
|
|
|
bool TabBarButton::event(QEvent* event)
|
|
{
|
|
if (event->type() == QEvent::Enter)
|
|
setFlat(false);
|
|
if (event->type() == QEvent::Leave)
|
|
setFlat(true);
|
|
|
|
return QPushButton::event(event);
|
|
}
|
|
|
|
TabStyle::TabStyle(QObject* parent)
|
|
{
|
|
setParent(parent);
|
|
}
|
|
|
|
QRect TabStyle::subElementRect(QStyle::SubElement sub_element, QStyleOption const* option, QWidget const* widget) const
|
|
{
|
|
// Place our add-tab button (set as the top-right corner widget) directly after the last tab
|
|
if (sub_element == QStyle::SE_TabWidgetRightCorner) {
|
|
auto* tab_widget = verify_cast<TabWidget>(widget);
|
|
auto tab_bar_size = tab_widget->tabBar()->sizeHint();
|
|
auto new_tab_button_size = tab_bar_size.height();
|
|
return QRect {
|
|
qMin(tab_bar_size.width(), tab_widget->width() - new_tab_button_size),
|
|
0,
|
|
new_tab_button_size,
|
|
new_tab_button_size
|
|
};
|
|
}
|
|
|
|
return QProxyStyle::subElementRect(sub_element, option, widget);
|
|
}
|
|
|
|
}
|