First steps to control brightness from MainWindow and show battery

level/status

eink.qrc

@@ -30,5 +30,6 @@
         <file>resources/battery_charging.png</file>
         <file>resources/alert.png</file>
         <file>resources/eink_dark.qss</file>
+        <file>resources/frontlight.png</file>
     </qresource>
 </RCC>

mainwindow.cpp

@@ -30,12 +30,14 @@ MainWindow::MainWindow(QWidget *parent)
     ui->quitBtn->setProperty("type", "borderless");
     ui->searchBtn->setProperty("type", "borderless");
     ui->pushButton->setProperty("type", "borderless");
+    ui->brightnessBtn->setProperty("type", "borderless");
 
     ui->settingsBtn->setText("");
     ui->appsBtn->setText("");
     ui->pushButton->setText("");
     ui->quitBtn->setText("");
     ui->searchBtn->setText("");
+    ui->brightnessBtn->setText("");
 
     // Getting the screen's size
     float sW = QGuiApplication::screens()[0]->size().width();
@@ -44,15 +46,21 @@ MainWindow::MainWindow(QWidget *parent)
 
     float stdIconWidth;
     float stdIconHeight;
+    float brightnessIconWidth;
+    float brightnessIconHeight;
 
     string_checkconfig("/opt/inkbox_device");
     if(checkconfig_str_val == "n705\n") {
         stdIconWidth = sW / 12;
         stdIconHeight = sH / 12;
+        brightnessIconWidth = sW / 30;
+        brightnessIconHeight = sH / 30;
     }
     else {
         stdIconWidth = sW / 14;
         stdIconHeight = sH / 14;
+        brightnessIconWidth = sW / 28;
+        brightnessIconHeight = sH / 28;
     }
 
     // Setting icons up
@@ -67,11 +75,18 @@ MainWindow::MainWindow(QWidget *parent)
     ui->quitBtn->setIcon(QIcon(":/resources/power.png"));
     ui->quitBtn->setIconSize(QSize(stdIconWidth, stdIconHeight));
 
+    ui->brightnessBtn->setIcon(QIcon(":/resources/frontlight.png"));
+    ui->brightnessBtn->setIconSize(QSize(brightnessIconWidth, brightnessIconHeight));
+
     ui->book1Btn->setStyleSheet("font-size: 11pt; padding: 25px");
     ui->book2Btn->setStyleSheet("font-size: 11pt; padding: 25px");
     ui->book3Btn->setStyleSheet("font-size: 11pt; padding: 25px");
     ui->book4Btn->setStyleSheet("font-size: 11pt; padding: 25px");
 
+    ui->brightnessBtn->setStyleSheet("font-size: 9pt; padding-bottom: 5px; padding-top: 5px; padding-left: 10px; padding-right: 10px;");
+    ui->batteryIcon->setStyleSheet("font-size: 5pt");
+    ui->batteryIcon->setText("");
+
     ui->book1Btn->hide();
     ui->book2Btn->hide();
     ui->book3Btn->hide();
@@ -167,10 +182,10 @@ MainWindow::MainWindow(QWidget *parent)
         QTimer *t = new QTimer(this);
         t->setInterval(500);
         connect(t, &QTimer::timeout, [&]() {
-           QString date = QDateTime::currentDateTime().toString("yyyy-MM-dd");
            QString time = QTime::currentTime().toString("hh:mm:ss");
+           get_battery_level();
            ui->timeLabel->setText(time);
-           ui->dateLabel->setText(date);
+           ui->batteryLabel->setText(batt_level);
         } );
         t->start();
     }
@@ -178,10 +193,10 @@ MainWindow::MainWindow(QWidget *parent)
         QTimer *t = new QTimer(this);
         t->setInterval(500);
         connect(t, &QTimer::timeout, [&]() {
-           QString date = QDateTime::currentDateTime().toString("yyyy-MM-dd");
            QString time = QTime::currentTime().toString("hh:mm");
+           get_battery_level();
            ui->timeLabel->setText(time);
-           ui->dateLabel->setText(date);
+           ui->batteryLabel->setText(batt_level);
         } );
         t->start();
     }

mainwindow.h

@@ -26,8 +26,10 @@ public:
     bool checked_box = false;
     bool existing_recent_books = false;
     bool reboot_after_update = false;
+    int batt_level_int;
     QString checkconfig_str_val;
     QString relative_path;
+    QString batt_level;
     bool checkconfig(QString file) {
         QFile config(file);
         config.open(QIODevice::ReadOnly);
@@ -48,6 +50,15 @@ public:
             fhandler << config << boolalpha << checked_box << endl;
             fhandler.close();
     }
+    void get_battery_level() {
+        QFile batt_level_file("/sys/devices/platform/pmic_battery.1/power_supply/mc13892_bat/capacity");
+        batt_level_file.open(QIODevice::ReadOnly);
+        batt_level = batt_level_file.readAll();
+        batt_level = batt_level.trimmed();
+        batt_level_int = batt_level.toInt();
+        batt_level = batt_level.append("%");
+        batt_level_file.close();
+    }
     int brightness_checkconfig(QString file) {
         QFile config(file);
         config.open(QIODevice::ReadWrite);

mainwindow.ui

@@ -17,34 +17,50 @@
    <layout class="QVBoxLayout" name="verticalLayout">
     <item>
      <layout class="QGridLayout" name="gridLayout_2">
-      <item row="0" column="1">
+      <item row="0" column="6">
-       <spacer name="horizontalSpacer">
+       <widget class="QPushButton" name="brightnessBtn">
-        <property name="orientation">
+        <property name="text">
-         <enum>Qt::Horizontal</enum>
+         <string>Brightness</string>
         </property>
-        <property name="sizeHint" stdset="0">
+       </widget>
-         <size>
-          <width>40</width>
-          <height>20</height>
-         </size>
-        </property>
-       </spacer>
       </item>
-      <item row="0" column="5">
+      <item row="0" column="3">
-       <spacer name="horizontalSpacer_2">
+       <widget class="QLabel" name="inkboxLabel">
-        <property name="orientation">
+        <property name="font">
-         <enum>Qt::Horizontal</enum>
+         <font>
+          <pointsize>11</pointsize>
+         </font>
         </property>
-        <property name="sizeHint" stdset="0">
+        <property name="text">
-         <size>
+         <string>Welcome to InkBox</string>
-          <width>40</width>
-          <height>20</height>
-         </size>
         </property>
-       </spacer>
+        <property name="alignment">
+         <set>Qt::AlignCenter</set>
+        </property>
+       </widget>
       </item>
-      <item row="0" column="4">
+      <item row="0" column="9">
-       <widget class="QLabel" name="label_2">
+       <widget class="QLabel" name="batteryLabel">
+        <property name="font">
+         <font>
+          <weight>75</weight>
+          <bold>true</bold>
+         </font>
+        </property>
+        <property name="text">
+         <string>batteryLevel</string>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="8">
+       <widget class="QLabel" name="batteryIcon">
+        <property name="text">
+         <string>batteryIcon</string>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="2">
+       <widget class="QLabel" name="label">
         <property name="text">
          <string>―</string>
         </property>
@@ -67,39 +83,46 @@
         </property>
        </widget>
       </item>
-      <item row="0" column="3">
+      <item row="0" column="1">
-       <widget class="QLabel" name="inkboxLabel">
+       <spacer name="horizontalSpacer">
-        <property name="font">
+        <property name="orientation">
-         <font>
+         <enum>Qt::Horizontal</enum>
-          <pointsize>11</pointsize>
-         </font>
         </property>
-        <property name="text">
+        <property name="sizeHint" stdset="0">
-         <string>Welcome to InkBox</string>
+         <size>
+          <width>40</width>
+          <height>20</height>
+         </size>
         </property>
-        <property name="alignment">
+       </spacer>
-         <set>Qt::AlignCenter</set>
-        </property>
-       </widget>
       </item>
-      <item row="0" column="2">
+      <item row="0" column="4">
-       <widget class="QLabel" name="label">
+       <widget class="QLabel" name="label_2">
         <property name="text">
          <string>―</string>
         </property>
        </widget>
       </item>
-      <item row="0" column="6">
+      <item row="0" column="5">
-       <widget class="QLabel" name="dateLabel">
+       <spacer name="horizontalSpacer_2">
-        <property name="font">
+        <property name="orientation">
-         <font>
+         <enum>Qt::Horizontal</enum>
-          <pointsize>11</pointsize>
-          <weight>75</weight>
-          <bold>true</bold>
-         </font>
         </property>
-        <property name="text">
+        <property name="sizeHint" stdset="0">
-         <string>date</string>
+         <size>
+          <width>40</width>
+          <height>20</height>
+         </size>
+        </property>
+       </spacer>
+      </item>
+      <item row="0" column="7">
+       <widget class="Line" name="line_7">
+        <property name="frameShadow">
+         <enum>QFrame::Plain</enum>
+        </property>
+        <property name="orientation">
+         <enum>Qt::Vertical</enum>
         </property>
        </widget>
       </item>
@@ -140,22 +163,6 @@
        <layout class="QVBoxLayout" name="verticalLayout_2">
         <item>
          <layout class="QGridLayout" name="gridLayout_3">
-          <item row="3" column="0">
-           <widget class="QLabel" name="recentBooksLabel">
-            <property name="font">
-             <font>
-              <family>Chivo</family>
-              <italic>true</italic>
-             </font>
-            </property>
-            <property name="text">
-             <string>Recently read books will appear here.</string>
-            </property>
-            <property name="alignment">
-             <set>Qt::AlignCenter</set>
-            </property>
-           </widget>
-          </item>
           <item row="2" column="0">
            <spacer name="verticalSpacer_5">
             <property name="orientation">
@@ -185,6 +192,84 @@
             </property>
            </widget>
           </item>
+          <item row="3" column="0">
+           <widget class="QLabel" name="recentBooksLabel">
+            <property name="font">
+             <font>
+              <family>Chivo</family>
+              <italic>true</italic>
+             </font>
+            </property>
+            <property name="text">
+             <string>Recently read books will appear here.</string>
+            </property>
+            <property name="alignment">
+             <set>Qt::AlignCenter</set>
+            </property>
+           </widget>
+          </item>
+          <item row="0" column="0">
+           <spacer name="verticalSpacer_4">
+            <property name="orientation">
+             <enum>Qt::Vertical</enum>
+            </property>
+            <property name="sizeHint" stdset="0">
+             <size>
+              <width>20</width>
+              <height>40</height>
+             </size>
+            </property>
+           </spacer>
+          </item>
+          <item row="4" column="0">
+           <layout class="QGridLayout" name="gridLayout">
+            <property name="bottomMargin">
+             <number>0</number>
+            </property>
+            <item row="0" column="0">
+             <layout class="QGridLayout" name="gridLayout_6">
+              <property name="bottomMargin">
+               <number>0</number>
+              </property>
+              <item row="0" column="0">
+               <widget class="QPushButton" name="book1Btn">
+                <property name="text">
+                 <string>Book 1</string>
+                </property>
+               </widget>
+              </item>
+              <item row="0" column="1">
+               <widget class="QPushButton" name="book2Btn">
+                <property name="text">
+                 <string>Book 2</string>
+                </property>
+               </widget>
+              </item>
+             </layout>
+            </item>
+            <item row="1" column="0">
+             <layout class="QGridLayout" name="gridLayout_8">
+              <property name="bottomMargin">
+               <number>0</number>
+              </property>
+              <item row="0" column="0">
+               <widget class="QPushButton" name="book3Btn">
+                <property name="text">
+                 <string>Book 3</string>
+                </property>
+               </widget>
+              </item>
+              <item row="0" column="1">
+               <widget class="QPushButton" name="book4Btn">
+                <property name="text">
+                 <string>Book 4</string>
+                </property>
+               </widget>
+              </item>
+             </layout>
+            </item>
+           </layout>
+          </item>
           <item row="5" column="0">
            <layout class="QGridLayout" name="gridLayout_4">
             <property name="bottomMargin">
@@ -277,68 +362,6 @@
             </item>
            </layout>
           </item>
-          <item row="4" column="0">
-           <layout class="QGridLayout" name="gridLayout">
-            <property name="bottomMargin">
-             <number>0</number>
-            </property>
-            <item row="0" column="0">
-             <layout class="QGridLayout" name="gridLayout_6">
-              <property name="bottomMargin">
-               <number>0</number>
-              </property>
-              <item row="0" column="0">
-               <widget class="QPushButton" name="book1Btn">
-                <property name="text">
-                 <string>Book 1</string>
-                </property>
-               </widget>
-              </item>
-              <item row="0" column="1">
-               <widget class="QPushButton" name="book2Btn">
-                <property name="text">
-                 <string>Book 2</string>
-                </property>
-               </widget>
-              </item>
-             </layout>
-            </item>
-            <item row="1" column="0">
-             <layout class="QGridLayout" name="gridLayout_8">
-              <property name="bottomMargin">
-               <number>0</number>
-              </property>
-              <item row="0" column="0">
-               <widget class="QPushButton" name="book3Btn">
-                <property name="text">
-                 <string>Book 3</string>
-                </property>
-               </widget>
-              </item>
-              <item row="0" column="1">
-               <widget class="QPushButton" name="book4Btn">
-                <property name="text">
-                 <string>Book 4</string>
-                </property>
-               </widget>
-              </item>
-             </layout>
-            </item>
-           </layout>
-          </item>
-          <item row="0" column="0">
-           <spacer name="verticalSpacer_4">
-            <property name="orientation">
-             <enum>Qt::Vertical</enum>
-            </property>
-            <property name="sizeHint" stdset="0">
-             <size>
-              <width>20</width>
-              <height>40</height>
-             </size>
-            </property>
-           </spacer>
-          </item>
          </layout>
         </item>
        </layout>