添加商店内弹出窗消息

使用SpkUiMessage::SendStoreNotification激活，必须在SpkStore构造函数加载完全局SpkPopup类之后才可
使用。

gui/spkpageqsstest.cpp

@@ -1,6 +1,7 @@
 
 #include <QApplication>
 #include "spkpageqsstest.h"
+#include "spkpopup.h"
 #include "spkui_general.h"
 
 SpkUi::SpkPageQssTest::SpkPageQssTest(QWidget *parent) : QSplitter(parent)
@@ -42,6 +43,14 @@ SpkUi::SpkPageQssTest::SpkPageQssTest(QWidget *parent) : QSplitter(parent)
   Loading->setObjectName("spk_pg_qsstest_loading");
   Loading->start();
 
+  PopupText = new QLineEdit(this);
+  PopupText->setObjectName("spk_pg_qsstest_poptext");
+  PopupText->setText("Hello, world");
+
+  ShowPopup = new QPushButton(this);
+  ShowPopup->setText("Show Popup");
+  connect(ShowPopup, &QPushButton::clicked, this, &SpkPageQssTest::ShowPopupSlot);
+
   SlideV = new QSlider(this);
   SlideV->setObjectName("spk_pg_qsstest_slider_v");
   SlideV->setOrientation(Qt::Vertical);
@@ -60,6 +69,8 @@ SpkUi::SpkPageQssTest::SpkPageQssTest(QWidget *parent) : QSplitter(parent)
   VLayBtn->addWidget(Chk);
   VLayBtn->addWidget(Rad);
   VLayBtn->addWidget(Loading);
+  VLayBtn->addWidget(PopupText);
+  VLayBtn->addWidget(ShowPopup);
 
   Group = new QGroupBox(this);
   Group->setObjectName("spk_pg_qsstest_groupbox");
@@ -102,3 +113,8 @@ void SpkUi::SpkPageQssTest::FetchStylesheet()
 {
   TextStylesheet->setPlainText(SpkUi::CurrentStylesheet);
 }
+
+void SpkUi::SpkPageQssTest::ShowPopupSlot()
+{
+  SpkUi::Popup->Show(PopupText->text());
+}

gui/spkpopup.cpp

@@ -0,0 +1,55 @@
+
+#include "spkmainwindow.h"
+#include "spkpopup.h"
+#include <libavutil/avutil.h>
+namespace SpkUi
+{
+  SpkPopup::SpkPopup(QWidget *parent,  int aMillis) : QWidget(parent)
+  {
+    setAttribute(Qt::WA_TransparentForMouseEvents);
+    setAttribute(Qt::WA_TranslucentBackground);
+    setWindowFlags(Qt::ToolTip | Qt::FramelessWindowHint);
+    mText = new QLabel();
+    mText->setStyleSheet("border-radius: 11px;"
+                         "background-color: rgba(0,0,0,150);"
+                         "color: white;"
+                         "padding: 5px;");
+    mText->setText(tr("(No Text)"));
+    mBox = new QHBoxLayout(this);
+    mBox->addWidget(mText);
+    mBox->setContentsMargins(0, 0, 0, 0);
+    // The reason why we contain it in a widget is that, if we want a QLabel have rounded corners,
+    // then it must be able to be displayed with a translucent background. However, setting
+    // Qt::WA_TranslucentBackground will cause the entire background of QLabel transparent.
+    // Therefore we need a container (SpkPopup) with a transparent background as the canvas layer
+    // of the actual displayed text.
+    mAnimFadeIn = new QPropertyAnimation(this, "windowOpacity");
+    mAnimFadeOut = new QPropertyAnimation(this, "windowOpacity");
+    mAnim = new QSequentialAnimationGroup(this);
+    mAnimFadeIn->setStartValue(0);
+    mAnimFadeIn->setEndValue(1);
+    mAnimFadeIn->setDuration(250);
+    mAnimFadeOut->setStartValue(1);
+    mAnimFadeOut->setEndValue(0);
+    mAnimFadeOut->setDuration(250);
+    mAnim->addAnimation(mAnimFadeIn);
+    mAnim->addPause(aMillis);
+    mAnim->addAnimation(mAnimFadeOut);
+    setVisible(false);
+  }
+
+  void SpkPopup::Show(QString aText)
+  {
+    if(mAnim->state() == QSequentialAnimationGroup::Running)
+      mAnim->stop();
+    QSize parentSize = parentWidget()->size();
+    mText->setText(aText);
+    adjustSize();
+    move(QPoint((parentSize.width() - width()) / 2, parentSize.height() - height() - 30) +
+         parentWidget()->pos());
+    setMaximumWidth(parentSize.width() - 200);
+    setWindowOpacity(1);
+    show();
+    mAnim->start();
+  }
+}

gui/spkui_general.cpp

@@ -18,6 +18,7 @@
 
 #include "spkui_general.h"
 #include "spkmsgbox.h"
+#include "spkpopup.h"
 #include "spklogging.h"
 
 namespace SpkUi
@@ -32,6 +33,8 @@ namespace SpkUi
   QStyle *OldSystemStyle = nullptr;
   QList<QColor> CurrentColorSet;
 
+  SpkPopup *Popup;
+
   namespace States
   {
     bool IsDDE = false, IsUsingDtkPlugin = false;
@@ -112,7 +115,7 @@ namespace SpkUi
       }
     }
 
-    // FIXME: Chameleon style kept adding unwanted blue focus indication border
+    // NOTE: Chameleon style kept adding unwanted blue focus indication border
     // to widgets that shouldn't have borders.
     // We need to eliminate this irritating problem.
     if(qgetenv("SPARK_NO_QSTYLE_CHANGE").toInt())