From c3bcb70d875c35534f44c2395cbde08cfb9a0ca0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20K=C3=A4berich?= <jan.kaeberich@francis-weiler.de>
Date: Fri, 6 Nov 2020 11:43:22 +0100
Subject: [PATCH] Limit number of saved lines in devicelog

---
 Software/PC_Application/Device/devicelog.cpp | 12 +++++
 Software/PC_Application/Device/devicelog.ui  | 46 ++++++++++++++++++--
 2 files changed, 55 insertions(+), 3 deletions(-)

diff --git a/Software/PC_Application/Device/devicelog.cpp b/Software/PC_Application/Device/devicelog.cpp
index 297e2e2..660f494 100644
--- a/Software/PC_Application/Device/devicelog.cpp
+++ b/Software/PC_Application/Device/devicelog.cpp
@@ -12,6 +12,18 @@ DeviceLog::DeviceLog(QWidget *parent) :
 {
     ui->setupUi(this);
     connect(ui->bClear, &QPushButton::clicked, this, &DeviceLog::clear);
+    connect(ui->limitLines, &QCheckBox::toggled, [=](bool enabled){
+        if(enabled) {
+            ui->text->setMaximumBlockCount(ui->numLines->value());
+            ui->numLines->setEnabled(true);
+        } else {
+            ui->text->setMaximumBlockCount(0);
+            ui->numLines->setEnabled(false);
+        }
+    });
+    connect(ui->numLines, qOverload<int>(&QSpinBox::valueChanged), [=](int lines) {
+        ui->text->setMaximumBlockCount(lines);
+    });
 }
 
 DeviceLog::~DeviceLog()
diff --git a/Software/PC_Application/Device/devicelog.ui b/Software/PC_Application/Device/devicelog.ui
index 7737120..567bb6d 100644
--- a/Software/PC_Application/Device/devicelog.ui
+++ b/Software/PC_Application/Device/devicelog.ui
@@ -6,14 +6,14 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>810</width>
-    <height>211</height>
+    <width>929</width>
+    <height>253</height>
    </rect>
   </property>
   <property name="windowTitle">
    <string>Form</string>
   </property>
-  <layout class="QHBoxLayout" name="horizontalLayout">
+  <layout class="QHBoxLayout" name="horizontalLayout_2">
    <item>
     <widget class="QPlainTextEdit" name="text">
      <property name="readOnly">
@@ -55,6 +55,46 @@
        </property>
       </widget>
      </item>
+     <item>
+      <layout class="QHBoxLayout" name="horizontalLayout">
+       <property name="spacing">
+        <number>2</number>
+       </property>
+       <item>
+        <widget class="QCheckBox" name="limitLines">
+         <property name="text">
+          <string>Only keep</string>
+         </property>
+         <property name="checked">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QSpinBox" name="numLines">
+         <property name="minimum">
+          <number>1</number>
+         </property>
+         <property name="maximum">
+          <number>1000</number>
+         </property>
+         <property name="singleStep">
+          <number>100</number>
+         </property>
+         <property name="value">
+          <number>200</number>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QLabel" name="label">
+         <property name="text">
+          <string>lines</string>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </item>
      <item>
       <spacer name="verticalSpacer">
        <property name="orientation">