439 lines
15 KiB
C++
439 lines
15 KiB
C++
/* This file is part of Clementine.
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Copyright 2018, Vikram Ambrose <ambroseworks@gmail.com>
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Clementine 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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Clementine 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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You should have received a copy of the GNU General Public License
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along with Clementine. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "fancytabwidget.h"
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#include "stylehelper.h"
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#include "core/logging.h"
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#include <QDebug>
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#include <QMenu>
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#include <QMouseEvent>
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#include <QPainter>
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#include <QTabBar>
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#include <QStylePainter>
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#include <QTimer>
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#include <QVBoxLayout>
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#include <QSettings>
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const QSize FancyTabWidget::IconSize_LargeSidebar = QSize(24,24);
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const QSize FancyTabWidget::IconSize_SmallSidebar = QSize(22,22);
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const QSize FancyTabWidget::TabSize_LargeSidebar = QSize(70,47);
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class FancyTabBar: public QTabBar {
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private:
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int mouseHoverTabIndex = -1;
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QMap<QWidget*,QString> labelCache;
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public:
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explicit FancyTabBar(QWidget* parent=0) : QTabBar(parent) {
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setMouseTracking(true);
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}
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QSize sizeHint() const {
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QSize size(QTabBar::sizeHint());
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FancyTabWidget *tabWidget = (FancyTabWidget*) parentWidget();
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if(tabWidget->mode() == FancyTabWidget::Mode_Tabs ||
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tabWidget->mode() == FancyTabWidget::Mode_IconOnlyTabs)
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return size;
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QSize tabSize(tabSizeHint(0));
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size.setWidth(tabSize.width());
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int guessHeight = tabSize.height()*count();
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if(guessHeight > size.height())
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size.setHeight(guessHeight);
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return size;
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}
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int width() {
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return tabSizeHint(0).width();
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}
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protected:
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QSize tabSizeHint(int index) const {
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FancyTabWidget *tabWidget = (FancyTabWidget*) parentWidget();
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QSize size = FancyTabWidget::TabSize_LargeSidebar;
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if(tabWidget->mode() != FancyTabWidget::Mode_LargeSidebar) {
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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 leaveEvent(QEvent * event) {
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mouseHoverTabIndex = -1;
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update();
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}
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void 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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QTabBar::mouseMoveEvent(event);
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}
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void paintEvent(QPaintEvent *pe) {
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FancyTabWidget *tabWidget = (FancyTabWidget*) parentWidget();
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bool verticalTextTabs = false;
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if(tabWidget->mode() == FancyTabWidget::Mode_SmallSidebar)
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verticalTextTabs = true;
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// Restore any label text that was hidden/cached for the IconOnlyTabs mode
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if(labelCache.count() > 0 && tabWidget->mode() != FancyTabWidget::Mode_IconOnlyTabs) {
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for(int i =0; i < count(); i++) {
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setTabText(i,labelCache[tabWidget->widget(i)]);
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}
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labelCache.clear();
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}
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if(tabWidget->mode() != FancyTabWidget::Mode_LargeSidebar &&
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tabWidget->mode() != FancyTabWidget::Mode_SmallSidebar) {
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// Cache and hide label text for IconOnlyTabs mode
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if(tabWidget->mode() == FancyTabWidget::Mode_IconOnlyTabs && labelCache.count() == 0) {
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for(int i =0; i < count(); i++) {
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labelCache[tabWidget->widget(i)] = tabText(i);
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setTabText(i,"");
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}
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}
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QTabBar::paintEvent(pe);
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return;
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}
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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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{
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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;
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Qt::Alignment iconFlags;
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QRect tabrectText;
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QRect tabrectLabel;
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if (verticalTextTabs) {
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m = QTransform::fromTranslate(tabrect.left(), tabrect.bottom());
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m.rotate(-90);
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textFlags = Qt::AlignLeft | Qt::AlignVCenter ;
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iconFlags = Qt::AlignLeft | 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(30,0);
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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 ;
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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.setPointSizeF(Utils::StyleHelper::sidebarFontSize());
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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) : Utils::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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const int PADDING = 5;
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if(verticalTextTabs) {
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tabrectIcon = tabrectLabel;
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tabrectIcon.setSize(FancyTabWidget::IconSize_SmallSidebar);
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tabrectIcon.translate(PADDING,PADDING);
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} else {
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tabrectIcon = tabrectLabel;
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tabrectIcon.setSize(FancyTabWidget::IconSize_LargeSidebar);
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// Center the icon
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const int moveRight = (FancyTabWidget::TabSize_LargeSidebar.width() -
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FancyTabWidget::IconSize_LargeSidebar.width() -1)/2;
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tabrectIcon.translate(moveRight,PADDING);
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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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};
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// Spacers are just disabled pages
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void FancyTabWidget::addSpacer() {
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QWidget *spacer = new QWidget();
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const int index = addTab(spacer,QIcon(),QString());
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setTabEnabled(index,false);
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}
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void FancyTabWidget::setBackgroundPixmap(const QPixmap& pixmap) {
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background_pixmap_ = pixmap;
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update();
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}
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void FancyTabWidget::setCurrentIndex(int index) {
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QWidget* currentPage = widget(index);
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QLayout *layout = currentPage->layout();
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if(bottom_widget_ != nullptr)
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layout->addWidget(bottom_widget_);
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QTabWidget::setCurrentIndex(index);
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}
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// Slot
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void FancyTabWidget::currentTabChanged(int index) {
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QWidget* currentPage = currentWidget();
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QLayout *layout = currentPage->layout();
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if(bottom_widget_ != nullptr)
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layout->addWidget(bottom_widget_);
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emit CurrentChanged(index);
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}
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FancyTabWidget::FancyTabWidget(QWidget* parent) : QTabWidget(parent),
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menu_(nullptr),
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mode_(Mode_None),
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bottom_widget_(nullptr) {
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FancyTabBar *tabBar = new FancyTabBar(this);
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setTabBar(tabBar);
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setTabPosition(QTabWidget::West);
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setMovable(true);
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connect(tabBar, SIGNAL(currentChanged(int)), this, SLOT(currentTabChanged(int)));
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}
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void FancyTabWidget::loadSettings(const QSettings& settings) {
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for (int i = 0; i < count(); i++) {
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int originalIndex = tabBar()->tabData(i).toInt();
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QString k = "tab_index_" + QString::number(originalIndex);
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int newIndex = settings.value(k, i).toInt();
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if (newIndex >= 0)
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tabBar()->moveTab(i, newIndex);
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else
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removeTab(i); // Does not delete page
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}
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}
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void FancyTabWidget::saveSettings(QSettings* settings) {
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for (int i = 0; i < count(); i++) {
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int originalIndex = tabBar()->tabData(i).toInt();
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QString k = "tab_index_" + QString::number(originalIndex);
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settings->setValue(k, i);
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}
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}
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void FancyTabWidget::addBottomWidget(QWidget* widget) {
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bottom_widget_ = widget;
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}
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int FancyTabWidget::addTab(QWidget * page, const QIcon & icon, const QString & label) {
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return insertTab(count(),page,icon,label);
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}
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int FancyTabWidget::insertTab(int index, QWidget * page, const QIcon & icon, const QString & label) {
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// In order to achieve the same effect as the "Bottom Widget" of the
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// old Nokia based FancyTabWidget a VBoxLayout is used on each page
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QVBoxLayout *layout = new QVBoxLayout();
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layout->setSpacing(0);
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layout->setContentsMargins(0,0,0,0);
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layout->addWidget(page);
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QWidget *newPage = new QWidget();
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newPage->setLayout(layout);
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const int actualIndex = QTabWidget::insertTab(index,newPage,icon,label);
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// Remember the original index. Needed to save order of tabs
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tabBar()->setTabData(actualIndex,QVariant(actualIndex));
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return actualIndex;
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}
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void FancyTabWidget::paintEvent(QPaintEvent *pe) {
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if(mode() != FancyTabWidget::Mode_LargeSidebar &&
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mode() != FancyTabWidget::Mode_SmallSidebar) {
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QTabWidget::paintEvent(pe);
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return;
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}
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QStylePainter p(this);
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// The brown color (Ubuntu) you see on the background gradient
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QColor baseColor = StyleHelper::baseColor();
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QRect backgroundRect = rect();
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backgroundRect.setWidth(((FancyTabBar*)tabBar())->width());
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p.fillRect(backgroundRect,baseColor);
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// Horizontal gradient over the sidebar from transparent to dark
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Utils::StyleHelper::verticalGradient(&p,backgroundRect,backgroundRect,false);
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// Draw the translucent png graphics over the gradient fill
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{
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if (!background_pixmap_.isNull()) {
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QRect pixmap_rect(background_pixmap_.rect());
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pixmap_rect.moveTo(backgroundRect.topLeft());
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while (pixmap_rect.top() < backgroundRect.bottom()) {
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QRect source_rect(pixmap_rect.intersected(backgroundRect));
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source_rect.moveTo(0, 0);
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p.drawPixmap(pixmap_rect.topLeft(), background_pixmap_,source_rect);
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pixmap_rect.moveTop(pixmap_rect.bottom() - 10);
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}
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}
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}
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// Shadow effect of the background
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{
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QColor light(255, 255, 255, 80);
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p.setPen(light);
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p.drawLine(backgroundRect.topRight() - QPoint(1, 0), backgroundRect.bottomRight() - QPoint(1, 0));
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QColor dark(0, 0, 0, 90);
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p.setPen(dark);
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p.drawLine(backgroundRect.topLeft(), backgroundRect.bottomLeft());
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p.setPen(Utils::StyleHelper::borderColor());
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p.drawLine(backgroundRect.topRight(), backgroundRect.bottomRight());
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}
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}
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void FancyTabWidget::tabBarUpdateGeometry() {
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tabBar()->updateGeometry();
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}
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void FancyTabWidget::SetMode(FancyTabWidget::Mode mode) {
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mode_ = mode;
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if(mode == FancyTabWidget::Mode_Tabs ||
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mode == FancyTabWidget::Mode_IconOnlyTabs) {
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setTabPosition(QTabWidget::North);
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} else {
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setTabPosition(QTabWidget::West);
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}
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tabBar()->updateGeometry();
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updateGeometry();
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// There appears to be a bug in QTabBar which causes tabSizeHint
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// to be ignored thus the need for this second shot repaint
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QTimer::singleShot(1,this,SLOT(tabBarUpdateGeometry()));
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emit ModeChanged(mode);
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}
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void FancyTabWidget::addMenuItem(QActionGroup* group, const QString& text,
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Mode mode) {
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QAction* action = group->addAction(text);
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action->setCheckable(true);
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connect(action, &QAction::triggered, [this, mode]() { SetMode(mode); });
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if (mode == mode_) action->setChecked(true);
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}
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void FancyTabWidget::contextMenuEvent(QContextMenuEvent* e) {
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if (!menu_) {
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menu_ = new QMenu(this);
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QActionGroup* group = new QActionGroup(this);
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addMenuItem(group, tr("Large sidebar"), Mode_LargeSidebar);
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addMenuItem(group, tr("Small sidebar"), Mode_SmallSidebar);
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addMenuItem(group, tr("Plain sidebar"), Mode_PlainSidebar);
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addMenuItem(group, tr("Tabs on top"), Mode_Tabs);
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addMenuItem(group, tr("Icons on top"), Mode_IconOnlyTabs);
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menu_->addActions(group->actions());
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}
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menu_->popup(e->globalPos());
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}
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