Move fancy tabbar classes into separate files
This commit is contained in:
Jonas Kvinge
283
src/widgets/fancytabbar.cpp
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283
src/widgets/fancytabbar.cpp
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/*
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* Strawberry Music Player
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* This file was part of Clementine.
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* Copyright 2018, Vikram Ambrose <ambroseworks@gmail.com>
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* Copyright 2018-2024, Jonas Kvinge <jonas@jkvinge.net>
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*
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* Strawberry is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Strawberry is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <algorithm>
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#include <QTabBar>
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#include <QString>
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#include <QFontMetrics>
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#include <QFont>
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#include <QStylePainter>
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#include <QPaintEvent>
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#include <QTransform>
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#include <QLinearGradient>
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#include <QColor>
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#include <QPen>
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#include "core/stylehelper.h"
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#include "fancytabbar.h"
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#include "fancytabwidget.h"
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#include "fancytabdata.h"
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namespace {
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constexpr int TabSize_LargeSidebarMinWidth = 70;
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} // namespace
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FancyTabBar::FancyTabBar(QWidget *parent) :
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QTabBar(parent),
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mouseHoverTabIndex(-1) {
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setMouseTracking(true);
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}
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QString FancyTabBar::TabText(const int index) const {
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return tabText(index).isEmpty() ? QLatin1String("") : tabData(index).value<FancyTabData*>()->label();
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}
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QSize FancyTabBar::sizeHint() const {
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FancyTabWidget *tabWidget = qobject_cast<FancyTabWidget*>(parentWidget());
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if (tabWidget->mode() == FancyTabWidget::Mode::Tabs || tabWidget->mode() == FancyTabWidget::Mode::IconOnlyTabs) {
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return QTabBar::sizeHint();
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}
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QSize size;
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int h = 0;
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for (int i = 0; i < count(); ++i) {
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if (tabSizeHint(i).width() > size.width()) size.setWidth(tabSizeHint(i).width());
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h += tabSizeHint(i).height();
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}
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size.setHeight(h);
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return size;
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}
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int FancyTabBar::width() const {
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FancyTabWidget *tabWidget = qobject_cast<FancyTabWidget*>(parentWidget());
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if (tabWidget->mode() == FancyTabWidget::Mode::LargeSidebar || tabWidget->mode() == FancyTabWidget::Mode::SmallSidebar) {
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int w = 0;
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for (int i = 0; i < count(); ++i) {
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if (tabSizeHint(i).width() > w) w = tabSizeHint(i).width();
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}
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return w;
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}
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else {
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return QTabBar::width();
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}
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}
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QSize FancyTabBar::tabSizeHint(const int index) const {
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FancyTabWidget *tabWidget = qobject_cast<FancyTabWidget*>(parentWidget());
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QSize size;
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if (tabWidget->mode() == FancyTabWidget::Mode::LargeSidebar) {
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QFont bold_font(font());
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bold_font.setBold(true);
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QFontMetrics fm(bold_font);
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// If the text of any tab is wider than the set width then use that instead.
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int w = std::max(TabSize_LargeSidebarMinWidth, tabWidget->iconsize_largesidebar() + 22);
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for (int i = 0; i < count(); ++i) {
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QRect rect = fm.boundingRect(QRect(0, 0, std::max(TabSize_LargeSidebarMinWidth, tabWidget->iconsize_largesidebar() + 22), height()), Qt::TextWordWrap, TabText(i));
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rect.setWidth(rect.width() + 10);
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if (rect.width() > w) w = rect.width();
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}
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QRect rect = fm.boundingRect(QRect(0, 0, w, height()), Qt::TextWordWrap, TabText(index));
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size = QSize(w, tabWidget->iconsize_largesidebar() + rect.height() + 10);
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}
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else if (tabWidget->mode() == FancyTabWidget::Mode::SmallSidebar) {
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QFont bold_font(font());
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bold_font.setBold(true);
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QFontMetrics fm(bold_font);
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QRect rect = fm.boundingRect(QRect(0, 0, 100, tabWidget->height()), Qt::AlignHCenter, TabText(index));
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int w = std::max(tabWidget->iconsize_smallsidebar(), rect.height()) + 15;
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int h = tabWidget->iconsize_smallsidebar() + rect.width() + 20;
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size = QSize(w, h);
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}
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else {
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size = QTabBar::tabSizeHint(index);
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}
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return size;
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}
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void FancyTabBar::leaveEvent(QEvent *event) {
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Q_UNUSED(event);
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mouseHoverTabIndex = -1;
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update();
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}
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void FancyTabBar::mouseMoveEvent(QMouseEvent *event) {
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QPoint pos = event->pos();
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mouseHoverTabIndex = tabAt(pos);
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if (mouseHoverTabIndex > -1) {
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update();
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}
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QTabBar::mouseMoveEvent(event);
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}
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void FancyTabBar::paintEvent(QPaintEvent *pe) {
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FancyTabWidget *tabWidget = qobject_cast<FancyTabWidget*>(parentWidget());
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if (tabWidget->mode() != FancyTabWidget::Mode::LargeSidebar && tabWidget->mode() != FancyTabWidget::Mode::SmallSidebar) {
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QTabBar::paintEvent(pe);
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return;
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}
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const bool vertical_text_tabs = tabWidget->mode() == FancyTabWidget::Mode::SmallSidebar;
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QStylePainter p(this);
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for (int index = 0; index < count(); ++index) {
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const bool selected = tabWidget->currentIndex() == index;
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QRect tabrect = tabRect(index);
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QRect selectionRect = tabrect;
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if (selected) {
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// Selection highlight
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p.save();
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QLinearGradient grad(selectionRect.topLeft(), selectionRect.topRight());
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grad.setColorAt(0, QColor(255, 255, 255, 140));
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grad.setColorAt(1, QColor(255, 255, 255, 210));
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p.fillRect(selectionRect.adjusted(0,0,0,-1), grad);
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p.restore();
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// shadow lines
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p.setPen(QColor(0, 0, 0, 110));
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p.drawLine(selectionRect.topLeft() + QPoint(1, -1), selectionRect.topRight() - QPoint(0, 1));
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p.drawLine(selectionRect.bottomLeft(), selectionRect.bottomRight());
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p.setPen(QColor(0, 0, 0, 40));
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p.drawLine(selectionRect.topLeft(), selectionRect.bottomLeft());
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// highlights
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p.setPen(QColor(255, 255, 255, 50));
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p.drawLine(selectionRect.topLeft() + QPoint(0, -2), selectionRect.topRight() - QPoint(0, 2));
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p.drawLine(selectionRect.bottomLeft() + QPoint(0, 1), selectionRect.bottomRight() + QPoint(0, 1));
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p.setPen(QColor(255, 255, 255, 40));
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p.drawLine(selectionRect.topLeft() + QPoint(0, 0), selectionRect.topRight());
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p.drawLine(selectionRect.topRight() + QPoint(0, 1), selectionRect.bottomRight() - QPoint(0, 1));
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p.drawLine(selectionRect.bottomLeft() + QPoint(0, -1), selectionRect.bottomRight() - QPoint(0, 1));
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}
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// Mouse hover effect
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if (!selected && index == mouseHoverTabIndex && isTabEnabled(index)) {
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p.save();
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QLinearGradient grad(selectionRect.topLeft(), selectionRect.topRight());
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grad.setColorAt(0, Qt::transparent);
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grad.setColorAt(0.5, QColor(255, 255, 255, 40));
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grad.setColorAt(1, Qt::transparent);
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p.fillRect(selectionRect, grad);
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p.setPen(QPen(grad, 1.0));
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p.drawLine(selectionRect.topLeft(), selectionRect.topRight());
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p.drawLine(selectionRect.bottomRight(), selectionRect.bottomLeft());
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p.restore();
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}
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// Label (Icon and Text)
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{
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p.save();
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QTransform m;
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int textFlags = 0;
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Qt::Alignment iconFlags;
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QRect tabrectText;
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QRect tabrectLabel;
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if (vertical_text_tabs) {
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m = QTransform::fromTranslate(tabrect.left(), tabrect.bottom());
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m.rotate(-90);
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textFlags = Qt::AlignVCenter;
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iconFlags = Qt::AlignVCenter;
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tabrectLabel = QRect(QPoint(0, 0), m.mapRect(tabrect).size());
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tabrectText = tabrectLabel;
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tabrectText.translate(tabWidget->iconsize_smallsidebar() + 8, 0);
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}
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else {
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m = QTransform::fromTranslate(tabrect.left(), tabrect.top());
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textFlags = Qt::AlignHCenter | Qt::AlignBottom | Qt::TextWordWrap;
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iconFlags = Qt::AlignHCenter | Qt::AlignTop;
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tabrectLabel = QRect(QPoint(0, 0), m.mapRect(tabrect).size());
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tabrectText = tabrectLabel;
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tabrectText.translate(0, -5);
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}
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p.setTransform(m);
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QFont boldFont(p.font());
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boldFont.setBold(true);
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p.setFont(boldFont);
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// Text drop shadow color
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p.setPen(selected ? QColor(255, 255, 255, 160) : QColor(0, 0, 0, 110));
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p.translate(0, 3);
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p.drawText(tabrectText, textFlags, TabText(index));
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// Text foreground color
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p.translate(0, -1);
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p.setPen(selected ? QColor(60, 60, 60) : StyleHelper::panelTextColor());
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p.drawText(tabrectText, textFlags, TabText(index));
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// Draw the icon
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QRect tabrectIcon;
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if (vertical_text_tabs) {
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tabrectIcon = tabrectLabel;
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tabrectIcon.setSize(QSize(tabWidget->iconsize_smallsidebar(), tabWidget->iconsize_smallsidebar()));
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// Center the icon
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const int moveRight = (QTabBar::width() - tabWidget->iconsize_smallsidebar()) / 2;
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tabrectIcon.translate(5, moveRight);
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}
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else {
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tabrectIcon = tabrectLabel;
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tabrectIcon.setSize(QSize(tabWidget->iconsize_largesidebar(), tabWidget->iconsize_largesidebar()));
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// Center the icon
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const int moveRight = (QTabBar::width() - tabWidget->iconsize_largesidebar() - 1) / 2;
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tabrectIcon.translate(moveRight, 5);
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}
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tabIcon(index).paint(&p, tabrectIcon, iconFlags);
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p.restore();
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}
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}
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}
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