fix: 初次启动音乐不添加歌曲时托盘菜单中的播放未置灰，单首歌播放时工具栏上下按钮没置灰

首次启动未获取当前歌曲数目

Log: 初次启动按钮状态正常
Bug: https://pms.uniontech.com/bug-view-119251.html

src/music-player/icons/icons.qrc

@@ -45,5 +45,7 @@
         <file>texts/music_singer_24px.svg</file>
         <file>texts/sort_rank_texts_36px.svg</file>
         <file>icons/dcc_collectiondis_36px.svg</file>
+        <file>texts/music_next_light_36px.svg</file>
+        <file>texts/music_last_light_36px.svg</file>
     </qresource>
 </RCC>

src/music-player/mainFrame/footerwidget.cpp

@@ -122,7 +122,7 @@ void FooterWidget::initUI(QWidget *parent)
 //    layout->setContentsMargins(0, 0, 10, 0);
 //    mainVBoxlayout->addWidget(downWidget);
 
-    m_btPrev = new DButtonBoxButton(QIcon::fromTheme("music_last"), "", this);
+    m_btPrev = new DButtonBoxButton(QIcon(":/icons/deepin/builtin/texts/music_last_36px.svg"), "", this);
     m_btPrev->setIconSize(QSize(36, 36));
     m_btPrev->setObjectName("FooterActionPrev");
     m_btPrev->setFixedSize(40, 50);
@@ -136,7 +136,7 @@ void FooterWidget::initUI(QWidget *parent)
     AC_SET_OBJECT_NAME(m_btPlay, AC_Play);
     AC_SET_ACCESSIBLE_NAME(m_btPlay, AC_Play);
 
-    m_btNext = new DButtonBoxButton(QIcon::fromTheme("music_next"), "", this);
+    m_btNext = new DButtonBoxButton(QIcon(":/icons/deepin/builtin/texts/music_next_36px.svg"), "", this);
     m_btNext->setIconSize(QSize(36, 36));
     m_btNext->setObjectName("FooterActionNext");
     m_btNext->setFixedSize(40, 50);
@@ -883,6 +883,9 @@ void FooterWidget::slotTheme(int type)
         pl.setColor(DPalette::FrameBorder, framecolor);
         pl.setColor(DPalette::Shadow, framecolor);
         DApplicationHelper::instance()->setPalette(m_ctlWidget, pl);
+
+        m_btPrev->setIcon(QIcon(":/icons/deepin/builtin/texts/music_last_36px.svg"));
+        m_btNext->setIcon(QIcon(":/icons/deepin/builtin/texts/music_next_36px.svg"));
     } else {
         QColor maskColor(32, 32, 32);
         maskColor.setAlphaF(0.80);
@@ -919,6 +922,9 @@ void FooterWidget::slotTheme(int type)
         pl.setColor(DPalette::FrameBorder, framecolor);
         pl.setColor(DPalette::Shadow, framecolor);
         DApplicationHelper::instance()->setPalette(m_ctlWidget, pl);
+
+        m_btPrev->setIcon(QIcon(":/icons/deepin/builtin/texts/music_last_light_36px.svg"));
+        m_btNext->setIcon(QIcon(":/icons/deepin/builtin/texts/music_next_light_36px.svg"));
     }
 
     m_waveform->setThemeType(type);

src/music-player/mainFrame/mainframe.cpp

@@ -322,7 +322,7 @@ void MainFrame::initMenuAndShortcut()
 
     //初始化托盘
     auto playAction = new QAction(tr("Play/Pause"), this);
-    playAction->setEnabled(m_importWidget == nullptr);
+    playAction->setEnabled(DataBaseService::getInstance()->allMusicInfos().size() > 0);
     auto prevAction = new QAction(tr("Previous"), this);
     prevAction->setEnabled(false);
     auto nextAction = new QAction(tr("Next"), this);