增加清除缓存功能，并翻译

app/Scanner/Scanner/Scanner.pro

@@ -78,7 +78,8 @@ SOURCES += \
     widget_statusbar.cpp \
     hg_settingdialog.cpp \
     dialog_logmanager.cpp \
-    global.cpp
+    global.cpp \
+    dialog_clrcache.cpp
 
 HEADERS += \
     ../../../ui/HGUIGlobal.h \
@@ -104,7 +105,8 @@ HEADERS += \
     widget_statusbar.h \
     hg_settingdialog.h \
     dialog_logmanager.h \
-    global.h
+    global.h \
+    dialog_clrcache.h
 
 FORMS += \
     dialog_admin.ui \
@@ -125,7 +127,8 @@ FORMS += \
     mainwindow.ui \
     widget_imgproc_base.ui \
     widget_statusbar.ui \
-    dialog_logmanager.ui
+    dialog_logmanager.ui \
+    dialog_clrcache.ui
 
 TRANSLATIONS += \
     Scanner_zh_CN.ts

app/Scanner/Scanner/dialog_aquireinto.cpp

 #include "dialog_aquireinto.h"
 #include "ui_dialog_aquireinto.h"
 #include "dialog_savequality.h"
+#include "global.h"
 #include <QFileDialog>
 #include <QDateTime>
 #include <QRegExpValidator>
@@ -16,7 +17,7 @@ Dialog_AquireInto::Dialog_AquireInto(QWidget* parent) :
     QRegExp rx("[^\\\\/:*?\"<>|]+$");
     ui->lineEdit_fileName->setValidator(new QRegExpValidator(rx, this));
 
-    QString filePath = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation) + "/Huago/ScannerApp/AquireInto";
+    QString filePath = APP_AQUIREINTO_PATH;
     ui->lineEdit_directory->setText(filePath);
     ui->cbtn_subFolder->setChecked(false);
     ui->cbtn_subFolderByBlank->setChecked(false);

app/Scanner/Scanner/dialog_clrcache.cpp

+#include "dialog_clrcache.h"
+#include "ui_dialog_clrcache.h"
+
+#include "global.h"
+#include <QMessageBox>
+#include <QDir>
+#include <QFileInfo>
+#include <QKeyEvent>
+
+Dialog_ClrCache::Dialog_ClrCache(QWidget *parent) :
+    QDialog(parent),
+    ui(new Ui::Dialog_ClrCache)
+{
+    ui->setupUi(this);
+    ui->lineEdit->setText(APP_CACHE_PATH);
+    setInformation(APP_CACHE_PATH);
+}
+
+Dialog_ClrCache::~Dialog_ClrCache()
+{
+    delete ui;
+}
+
+void Dialog_ClrCache::closeEvent(QCloseEvent *event)
+{
+    (void)event;
+    if(m_isClear)
+        accept();
+    else
+        reject();
+}
+
+void Dialog_ClrCache::keyPressEvent(QKeyEvent* event)
+{
+    switch (event->key())
+    {
+    case Qt::Key_Escape:
+        break;
+    default:
+        QDialog::keyPressEvent(event);
+    }
+}
+
+void Dialog_ClrCache::on_btn_clr_clicked()
+{
+    QFileInfo file(APP_CACHE_PATH);
+    if(file.exists())
+    {
+        int ret = QMessageBox::question(this, tr("Question"), tr("Main window contains temporary files, clear cache would remove all of them.\n"
+                                                                 "Continue to clear?"));
+        if(ret != QMessageBox::Yes)
+            return;
+    }
+    else
+    {
+          QMessageBox::information(this, tr("Information"), tr("No cached file is available"));
+    }
+
+    if(file.exists() && clrCache(APP_CACHE_PATH))
+    {
+        QMessageBox::information(this, tr("Information"), tr("Cache clear successfully."));
+        Global::writeSyslog(user_level_messages, Informational, "User try to clear cache and succeed.");
+    }
+    else if(file.exists() && !clrCache(APP_CACHE_PATH))
+    {
+        QMessageBox::warning(this, tr("Warning"), tr("Cache clear failed or incompletely clear."));
+        Global::writeSyslog(user_level_messages, Informational, "User try to clear cache, but failed or incompletely clear.");
+    }
+    setInformation(APP_CACHE_PATH);
+}
+
+void Dialog_ClrCache::on_btn_close_clicked()
+{
+    close();
+}
+
+bool Dialog_ClrCache::clrCache(const QString &path)
+{
+    m_isClear = true;
+    QDir dir = QDir(path);
+    bool isSuccessful = dir.removeRecursively();
+    dir.mkpath(APP_CACHE_PATH);
+    return isSuccessful;
+}
+
+qint64 Dialog_ClrCache::getDirSize(const QString &path)
+{
+    QDir dir(path);
+    qint64 size = 0;
+    foreach(QFileInfo info, dir.entryInfoList(QDir::Files))
+        size += info.size();
+    foreach(QString subDir, dir.entryList(QDir::Dirs | QDir::NoDotAndDotDot))
+        size += getDirSize(path + QDir::separator() + subDir);
+
+    return size;
+}
+
+int Dialog_ClrCache::getFileNum(const QString &path)
+{
+    QDir dir(path);
+    int num = 0;
+    foreach(QFileInfo info, dir.entryInfoList(QDir::Files))
+        num++;
+    foreach(QString subDir, dir.entryList(QDir::Dirs | QDir::NoDotAndDotDot))
+        num += getFileNum(path + QDir::separator() + subDir);
+
+    return num;
+}
+
+void Dialog_ClrCache::setInformation(const QString &path)
+{
+    //生成缓存占用空间大小信息
+    qint64 size = getDirSize(path);
+    double s = size;
+    int unit = 0;
+    while(true)
+    {
+        if(s > 1024.0)
+        {
+            s /= 1024.0;
+            unit += 1;
+        }
+        else
+            break;
+    }
+    QString sstring = QString::number(s, 'f', 2);
+    ui->lab_size->setText(sstring);
+    QString unitstring = unit == 3 ? "GB" : (unit == 2 ? "MB" : (unit == 1 ? "KB" : "B"));
+    ui->lab_unit->setText(unitstring);
+
+    QString Bstring = QString::number(size);
+    int commaNum = Bstring.size() / 3;
+    if(Bstring.size() % 3 == 0)
+        commaNum -= 1;
+    int offset = 0;
+    for(int i = 0; i < commaNum; i++)
+    {
+        Bstring.insert(Bstring.size() - 3 - offset * 4, ",");
+        offset += 1;
+    }
+    ui->lab_sizeByB->setText("(" + Bstring + " Byte)");
+    //生成文件个数信息
+    ui->lab_num->setNum(getFileNum(path));
+}

app/Scanner/Scanner/dialog_clrcache.h

+#ifndef DIALOG_CLRCACHE_H
+#define DIALOG_CLRCACHE_H
+
+#include <QDialog>
+
+namespace Ui {
+class Dialog_ClrCache;
+}
+
+class Dialog_ClrCache : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit Dialog_ClrCache(QWidget *parent = nullptr);
+    ~Dialog_ClrCache();
+
+protected:
+    void closeEvent(QCloseEvent *event);
+
+    void keyPressEvent(QKeyEvent* event);
+
+private slots:
+    void on_btn_clr_clicked();
+    void on_btn_close_clicked();
+
+private:
+    bool clrCache(const QString &path);
+    qint64 getDirSize(const QString &path);
+    int getFileNum(const QString &path);
+    void setInformation(const QString &path);
+
+private:
+    Ui::Dialog_ClrCache *ui;
+    bool m_containTempFile, m_isClear;
+};
+
+#endif // DIALOG_CLRCACHE_H

app/Scanner/Scanner/dialog_clrcache.ui

+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>Dialog_ClrCache</class>
+ <widget class="QDialog" name="Dialog_ClrCache">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>490</width>
+    <height>159</height>
+   </rect>
+  </property>
+  <property name="minimumSize">
+   <size>
+    <width>0</width>
+    <height>159</height>
+   </size>
+  </property>
+  <property name="maximumSize">
+   <size>
+    <width>16777215</width>
+    <height>159</height>
+   </size>
+  </property>
+  <property name="windowTitle">
+   <string>Dialog</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout">
+     <item>
+      <widget class="QLabel" name="label">
+       <property name="text">
+        <string>Cache path:</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QLineEdit" name="lineEdit">
+       <property name="enabled">
+        <bool>false</bool>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout_2">
+     <item>
+      <widget class="QLabel" name="label_2">
+       <property name="text">
+        <string>Cache occupied space:</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QLabel" name="lab_size">
+       <property name="text">
+        <string>0</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QLabel" name="lab_unit">
+       <property name="text">
+        <string>B</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QLabel" name="lab_sizeByB">
+       <property name="text">
+        <string>(0 Byte)</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <spacer name="horizontalSpacer">
+       <property name="orientation">
+        <enum>Qt::Horizontal</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>40</width>
+         <height>20</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout_4">
+     <item>
+      <widget class="QLabel" name="label_3">
+       <property name="text">
+        <string>Number of files:</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QLabel" name="lab_num">
+       <property name="text">
+        <string>0</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <spacer name="horizontalSpacer_3">
+       <property name="orientation">
+        <enum>Qt::Horizontal</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>40</width>
+         <height>20</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <layout class="QHBoxLayout" name="horizontalLayout_3">
+     <item>
+      <spacer name="horizontalSpacer_2">
+       <property name="orientation">
+        <enum>Qt::Horizontal</enum>
+       </property>
+       <property name="sizeHint" stdset="0">
+        <size>
+         <width>40</width>
+         <height>20</height>
+        </size>
+       </property>
+      </spacer>
+     </item>
+     <item>
+      <widget class="QPushButton" name="btn_clr">
+       <property name="text">
+        <string>Clear Cache</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QPushButton" name="btn_close">
+       <property name="text">
+        <string>Close</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>

app/Scanner/Scanner/global.h

@@ -3,8 +3,9 @@
 
 #include <QStandardPaths>
 
-static const QString APP_FILE_PATH = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation) + "/Huago/ScannerApp/Cache";
-static const QString LOG_PATH = APP_FILE_PATH + "/log";
+static const QString APP_AQUIREINTO_PATH = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation) + "/Huago/ScannerApp/AquireInto";
+static const QString APP_CACHE_PATH = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation) + "/Huago/ScannerApp/Cache";
+static const QString LOG_PATH = QStandardPaths::writableLocation(QStandardPaths::DocumentsLocation) + "/Huago/ScannerApp/Cache/Log";
 
 enum LogFacility {
     kernel_messages,

app/Scanner/Scanner/mainwindow.cpp

@@ -24,6 +24,7 @@
 #include "dialog_insertindex.h"
 #include "dialog_aquireinto.h"
 #include "dialog_logmanager.h"
+#include "dialog_clrcache.h"
 #if !defined(HG_CMP_MSC) || !defined(APP_USE_TWAIN)
 #include "hg_settingdialog.h"
 #endif
@@ -1721,6 +1722,10 @@ void MainWindow::on_act_clrCache_triggered()
     {
         return;
     }
+
+    Dialog_ClrCache d(this);
+    d.setWindowFlags(Qt::Dialog | Qt::WindowCloseButtonHint);
+    d.exec();
 }
 
 void MainWindow::on_act_consume_triggered()