feat: basic lyrics support

2024-09-20 20:59:40 +08:00
parent f4374a0768
commit 2a92f4ea7f
11 changed files with 484 additions and 57 deletions
--- a/lrcbar.cpp
+++ b/lrcbar.cpp
@ -0,0 +1,128 @@
+// SPDX-FileCopyrightText: 2024 Gary Wang <git@blumia.net>
+//
+// SPDX-License-Identifier: MIT
+
+#include "lrcbar.h"
+
+#include "lyricsmanager.h"
+
+#include <QMouseEvent>
+#include <QPainter>
+#include <QWindow>
+
+LrcBar::LrcBar(QWidget *parent)
+    : QWidget(parent, Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint | Qt::Tool)
+    , m_lrcMgr(new LyricsManager(this))
+{
+    m_font.setPointSize(30);
+    m_font.setStyleStrategy(QFont::PreferAntialias);
+
+    QSize windowSize(sizeHint());
+
+    QFontMetrics fm(m_font);
+    m_baseLinearGradient.setColorAt(0, QColor(20, 100, 200));
+    m_baseLinearGradient.setColorAt(1, QColor(0, 80, 255));
+    m_baseLinearGradient.setStart(0, (windowSize.height() - fm.height()) / 2);
+    m_baseLinearGradient.setFinalStop(0, (windowSize.height() + fm.height()) / 2);
+    m_maskLinearGradient.setColorAt(0, QColor(255, 128, 0));
+    m_maskLinearGradient.setColorAt(0.5, QColor(255, 255, 0));
+    m_maskLinearGradient.setColorAt(1, QColor(255, 128, 0));
+    m_maskLinearGradient.setStart(0, (windowSize.height() - fm.height()) / 2);
+    m_maskLinearGradient.setFinalStop(0, (windowSize.height() + fm.height()) / 2);
+
+    setAttribute(Qt::WA_TranslucentBackground);
+    setMouseTracking(true);
+    setGeometry(QRect(QPoint((qApp->primaryScreen()->geometry().width() - windowSize.width()) / 2,
+                             qApp->primaryScreen()->geometry().height() - windowSize.height() - 50),
+                      windowSize));
+}
+
+LrcBar::~LrcBar()
+{
+
+}
+
+bool LrcBar::loadLyrics(QString filepath)
+{
+    m_currentTimeMs = 0;
+    return m_lrcMgr->loadLyrics(filepath);
+}
+
+void LrcBar::playbackPositionChanged(int timestampMs, int totalTimeMs)
+{
+    if (!isVisible()) return;
+
+    m_currentTimeMs = timestampMs;
+    m_lrcMgr->updateCurrentTimeMs(timestampMs, totalTimeMs);
+    update();
+}
+
+QSize LrcBar::sizeHint() const
+{
+    return QSize(1000, 88);
+}
+
+void LrcBar::mouseMoveEvent(QMouseEvent *event)
+{
+    if (event->buttons() & Qt::LeftButton) {
+        window()->windowHandle()->startSystemMove();
+        event->accept();
+    }
+
+    return QWidget::mouseMoveEvent(event);
+}
+
+void LrcBar::paintEvent(QPaintEvent *)
+{
+    QPainter painter(this);
+    if (underMouse()) {
+        painter.setBrush(QBrush(QColor(255, 255, 255, 120)));
+        painter.setPen(Qt::NoPen);
+        painter.drawRect(0, 0, width(), height());
+    }
+    painter.setFont(m_font);
+    painter.setRenderHint(QPainter::Antialiasing, true);
+
+    QString curLrc(m_lrcMgr->lyrics().trimmed());
+    if (curLrc.isEmpty()) {
+        curLrc = m_lrcMgr->hasLyrics() ? tr("(Interlude...)")
+                                       : QCoreApplication::translate("MainWindow", "Pineapple Music", nullptr);
+    }
+
+    QFontMetrics fm(m_font);
+    int lrcWidth = fm.horizontalAdvance(curLrc);
+    int maskWidth = lrcWidth * m_lrcMgr->maskPercent(m_currentTimeMs);
+    int startOffsetX = 0;
+
+    if (fm.horizontalAdvance(curLrc) < width()) {
+        startOffsetX = (width() - lrcWidth) / 2;
+    } else {
+        if (maskWidth < width() / 2) {
+            startOffsetX = 0;
+        } else if (lrcWidth - maskWidth < width() / 2) {
+            startOffsetX = width() - lrcWidth;
+        } else {
+            startOffsetX = 0 - (maskWidth - width() / 2);
+        }
+    }
+
+    // shadow
+    painter.setPen(QColor(0, 0, 0, 80));
+    painter.drawText(startOffsetX + 2, 2, lrcWidth, this->height(), Qt::AlignVCenter, curLrc);
+    // text itself
+    painter.setPen(QPen(m_baseLinearGradient, 0));
+    painter.drawText(startOffsetX, 0, lrcWidth, this->height(), Qt::AlignVCenter, curLrc);
+    // mask
+    painter.setPen(QPen(m_maskLinearGradient, 0));
+    painter.drawText(startOffsetX, 0, maskWidth, this->height(), Qt::AlignVCenter, curLrc);
+}
+
+void LrcBar::enterEvent(QEnterEvent *)
+{
+    update();
+}
+
+void LrcBar::leaveEvent(QEvent *)
+{
+    update();
+}