From e32c1177c3f548503c8a51961d1f250a6875274a Mon Sep 17 00:00:00 2001
From: blue <blue@macaw.me>
Date: Thu, 5 Sep 2019 18:25:31 +0300
Subject: [PATCH] rookie shaky messages history request in progress animation

---
 ui/widgets/conversation.cpp | 11 +++++---
 ui/widgets/messageline.cpp  | 53 ++++++++++++++++++++++++++++++++++++-
 ui/widgets/messageline.h    |  9 +++++++
 3 files changed, 68 insertions(+), 5 deletions(-)

diff --git a/ui/widgets/conversation.cpp b/ui/widgets/conversation.cpp
index 22cf909..9673983 100644
--- a/ui/widgets/conversation.cpp
+++ b/ui/widgets/conversation.cpp
@@ -202,11 +202,13 @@ void Conversation::onSliderValueChanged(int value)
             scroll = down;
         } else {
             if (!requestingHistory && value == 0) {
-                m_ui->historyStatus->setPixmap(Shared::icon("view-refresh", true).pixmap(25));
                 requestingHistory = true;
+                line->showBusyIndicator();
                 emit requestArchive(line->firstMessageId());
+                scroll = keep;
+            } else {
+                scroll = nothing;
             }
-            scroll = nothing;
         }
     }
 }
@@ -216,7 +218,7 @@ void Conversation::responseArchive(const std::list<Shared::Message> list)
     requestingHistory = false;
     scroll = keep;
     
-    m_ui->historyStatus->clear();
+    line->hideBusyIndicator();
     for (std::list<Shared::Message>::const_iterator itr = list.begin(), end = list.end(); itr != end; ++itr) {
         addMessage(*itr);
     }
@@ -226,8 +228,9 @@ void Conversation::showEvent(QShowEvent* event)
 {
     if (!everShown) {
         everShown = true;
-        m_ui->historyStatus->setPixmap(Shared::icon("view-refresh", true).pixmap(25));
+        line->showBusyIndicator();
         requestingHistory = true;
+        scroll = keep;
         emit requestArchive(line->firstMessageId());
     }
     emit shown();
diff --git a/ui/widgets/messageline.cpp b/ui/widgets/messageline.cpp
index f4ec827..ea07145 100644
--- a/ui/widgets/messageline.cpp
+++ b/ui/widgets/messageline.cpp
@@ -31,11 +31,27 @@ MessageLine::MessageLine(bool p_room, QWidget* parent):
     myName(),
     palNames(),
     views(),
-    room(p_room)
+    room(p_room),
+    busyLabel(),
+    busyLayout(),
+    busyShown(false),
+    rotation()
 {
     setLayout(layout);
     setBackgroundRole(QPalette::Base);
     layout->addStretch();
+    
+    busyLabel.setPixmap(Shared::icon("view-refresh", true).pixmap(50));
+    busyLayout.addStretch();
+    busyLayout.addWidget(&busyLabel);
+    busyLayout.addStretch();
+    
+    busyLabel.hide();
+    rotation.setDuration(500);
+    rotation.setStartValue(0.0f);
+    rotation.setEndValue(180.0f);
+    rotation.setLoopCount(-1);
+    connect(&rotation, SIGNAL(valueChanged(const QVariant&)), this, SLOT(onAnimationValueChanged(const QVariant&)));
 }
 
 MessageLine::~MessageLine()
@@ -72,6 +88,10 @@ MessageLine::Position MessageLine::message(const Shared::Message& msg)
         res = middle;
     }
     
+    if (busyShown) {
+        index += 1;
+    }
+    
     QVBoxLayout* vBox = new QVBoxLayout();
     QHBoxLayout* hBox = new QHBoxLayout();
     QWidget* message = new QWidget();
@@ -184,3 +204,34 @@ QString MessageLine::firstMessageId() const
         return messageOrder.begin()->second->getId();
     }
 }
+
+void MessageLine::showBusyIndicator()
+{
+    if (!busyShown)  {
+        layout->insertLayout(0, &busyLayout);
+        busyShown = true;
+        rotation.start();
+        busyLabel.show();
+    }
+}
+
+void MessageLine::hideBusyIndicator()
+{
+    if (busyShown) {
+        busyLabel.hide();
+        rotation.stop();
+        layout->removeItem(&busyLayout);
+        busyShown = false;
+    }
+}
+
+void MessageLine::onAnimationValueChanged(const QVariant& value)
+{
+    QTransform r;
+    r.rotate(value.toReal());
+    QPixmap pxm = Shared::icon("view-refresh", true).pixmap(50).transformed(r, Qt::SmoothTransformation);
+    int dw = pxm.width() - 50;
+    int dh = pxm.height() - 50;
+    pxm = pxm.copy(dw/2, dh/2, 50, 50);
+    busyLabel.setPixmap(pxm);
+}
diff --git a/ui/widgets/messageline.h b/ui/widgets/messageline.h
index 407120c..1cd294c 100644
--- a/ui/widgets/messageline.h
+++ b/ui/widgets/messageline.h
@@ -24,6 +24,8 @@
 #include <QHBoxLayout>
 #include <QLabel>
 #include <QResizeEvent>
+#include <QIcon>
+#include <QVariantAnimation>
 #include "../global.h"
 
 class MessageLine : public QWidget
@@ -71,6 +73,13 @@ private:
     std::map<QString, QString> palNames;
     std::deque<QHBoxLayout*> views;
     bool room;
+    QLabel busyLabel;
+    QHBoxLayout busyLayout;
+    bool busyShown;
+    QVariantAnimation rotation;
+    
+private slots:
+    void onAnimationValueChanged(const QVariant& value);
 };
 
 #endif // MESSAGELINE_H