修复在第一次下载进度报告前取消下载导致崩溃的问题

gui/page/spkpagedownloads.cpp

@@ -13,11 +13,11 @@ SpkUi::SpkPageDownloads::SpkPageDownloads(QWidget *parent) :
   mScrollWidget = new QWidget;
   mScrollArea = new QScrollArea(this);
 
+  mLayEntries->setAlignment(Qt::AlignTop);
   mScrollWidget->setLayout(mLayEntries);
   mScrollArea->setWidget(mScrollWidget);
   mScrollArea->setWidgetResizable(true);
   mMainLay->addWidget(mScrollArea);
-  mMainLay->addStretch();
   setLayout(mMainLay);
 
   mDownloadMgr = new SpkDownloadMgr(this);
@@ -118,6 +118,8 @@ void SpkUi::SpkPageDownloads::DownloadStopped(SpkDownloadMgr::TaskResult status,
   if(!mWaitingDownloads.isEmpty())
   {
     auto nextTask = mWaitingDownloads.dequeue();
+    auto nextEntry = mEntries[nextTask.first];
+    nextEntry->SetStatus(SpkDownloadEntry::Starting);
     mDownloadMgr->StartNewDownload(nextTask.second, nextTask.first);
     mCurrentStatus = Waiting;
   }
@@ -199,6 +201,8 @@ void SpkUi::SpkPageDownloads::NewDownloadTask(int id, QString downloadPath)
     mWaitingDownloads.enqueue({ id, downloadPath }); // Queue download task for future
   else
   {
+    auto nextEntry = mEntries[id];
+    nextEntry->SetStatus(SpkDownloadEntry::Starting);
     mCurrentStatus = Waiting;
     if(!mDownloadMgr->StartNewDownload(downloadPath, id)) // Initiate a download task when idle
     {

gui/spkdownloadentry.cpp

@@ -81,10 +81,16 @@ void SpkDownloadEntry::SetStatus(DownloadEntryStatus status, QString msg)
       mBtnDelete->setText(tr("Cancel"));
       break;
 
+    case Starting:
+      mMessage->setText(tr("Starting download"));
+      mBtnDelete->setVisible(false);
+      break;
+
     case Downloading:
       mMessage->setText(tr(""));
       mProgress->setVisible(true);
       mBtnActions->setVisible(false);
+      mBtnDelete->setVisible(true);
       break;
 
     case DownloadFailed:

inc/spkdownloadentry.h

@@ -25,6 +25,7 @@ class SpkDownloadEntry : public QWidget
     {
       Invalid = -1,
       Waiting,
+      Starting,
       Downloading,
       DownloadFailed,
       ToBeInstalled,

lang/zh.ts

@@ -201,38 +201,43 @@ Right now we are not just a Chinese group. We are discovering our way into more
     </message>
     <message>
         <location filename="../gui/spkdownloadentry.cpp" line="81"/>
-        <location filename="../gui/spkdownloadentry.cpp" line="130"/>
+        <location filename="../gui/spkdownloadentry.cpp" line="136"/>
         <source>Cancel</source>
         <translation>取消</translation>
     </message>
     <message>
-        <location filename="../gui/spkdownloadentry.cpp" line="94"/>
+        <location filename="../gui/spkdownloadentry.cpp" line="85"/>
+        <source>Starting download</source>
+        <translation>正在开始下载</translation>
+    </message>
+    <message>
+        <location filename="../gui/spkdownloadentry.cpp" line="100"/>
         <source>Retry</source>
         <translation>重试</translation>
     </message>
     <message>
-        <location filename="../gui/spkdownloadentry.cpp" line="99"/>
+        <location filename="../gui/spkdownloadentry.cpp" line="105"/>
         <source>Download Finished</source>
         <translation>下载完成</translation>
     </message>
     <message>
-        <location filename="../gui/spkdownloadentry.cpp" line="103"/>
+        <location filename="../gui/spkdownloadentry.cpp" line="109"/>
-        <location filename="../gui/spkdownloadentry.cpp" line="128"/>
+        <location filename="../gui/spkdownloadentry.cpp" line="134"/>
         <source>Install</source>
         <translation>安装</translation>
     </message>
     <message>
-        <location filename="../gui/spkdownloadentry.cpp" line="116"/>
+        <location filename="../gui/spkdownloadentry.cpp" line="122"/>
         <source>Installed</source>
         <translation>已安装完成</translation>
     </message>
     <message>
-        <location filename="../gui/spkdownloadentry.cpp" line="120"/>
+        <location filename="../gui/spkdownloadentry.cpp" line="126"/>
         <source>Delete</source>
         <translation>删除</translation>
     </message>
     <message>
-        <location filename="../gui/spkdownloadentry.cpp" line="124"/>
+        <location filename="../gui/spkdownloadentry.cpp" line="130"/>
         <source>Install Failed</source>
         <translation>安装失败</translation>
     </message>
@@ -772,12 +777,12 @@ to use terminal for program output.</source>
         <translation>下载“%1”时出错。</translation>
     </message>
     <message>
-        <location filename="../gui/page/spkpagedownloads.cpp" line="156"/>
+        <location filename="../gui/page/spkpagedownloads.cpp" line="158"/>
         <source>Failed to start installation.</source>
         <translation>无法开始安装。</translation>
     </message>
     <message>
-        <location filename="../gui/page/spkpagedownloads.cpp" line="192"/>
+        <location filename="../gui/page/spkpagedownloads.cpp" line="194"/>
         <source>Install failed, exit code: %1.</source>
         <translation>安装失败，退出代码：%1。</translation>
     </message>