From 16b9bc25e523107b2222958ab5a3f43fa2db1a27 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Mei=C3=9Fner?= <daniel.meissner@inf.h-brs.de>
Date: Mon, 21 Dec 2015 21:29:05 +0100
Subject: [PATCH] gui: added information about free disk space and needed space
---
lib/disk.py | 49 ++++++++++++++++++++++++++++
lib/gui/gui.py | 70 ++++++++++++++++++++++++++++++++++++++++
lib/gui/su_mainwindow.ui | 18 +++++++++--
3 files changed, 134 insertions(+), 3 deletions(-)
create mode 100644 lib/disk.py
diff --git a/lib/disk.py b/lib/disk.py
new file mode 100644
index 0000000..e354048
--- /dev/null
+++ b/lib/disk.py
@@ -0,0 +1,49 @@
+# -*- encoding: utf-8 -*-
+
+import os
+
+class Disk(object):
+ """
+ Class for disk operations.
+ """
+ @staticmethod
+ def free_disk_space(path):
+ """
+ Calculate free disk space for given path.
+
+ Returned available_bytes or None when path not exists or writable.
+ """
+ if Disk.path_writeble(path):
+ stats = os.statvfs(path)
+
+ available_bytes = (stats.f_bavail * stats.f_frsize)
+ return available_bytes
+ else:
+ return None
+
+
+ @staticmethod
+ def path_writeble(path):
+ """
+ Check if a given path is writable for user.
+ """
+ if os.path.exists(path):
+ return os.access(path, os.W_OK)
+ elif os.access(os.path.dirname(path), os.W_OK) and \
+ os.access(path, os.W_OK):
+ return True
+ else:
+ return False
+
+ @staticmethod
+ def sizeof_fmt(num, suffix="B"):
+ """
+ Convert number of bytes into human readable format.
+ Source: https://web.archive.org/web/20111010015624/http://blogmag.net/blog/read/38/Print_human_readable_file_size
+ """
+ for unit in ["", "Ki", "Mi", "Gi", "Ti", "Pi", "Ei", "Zi"]:
+ if abs(num) < 1024.0:
+ return "%3.1f %s%s" % (num, unit, suffix)
+ num /= 1024.0
+
+ return "%.1f %s%s" % (num, "Yi", suffix)
diff --git a/lib/gui/gui.py b/lib/gui/gui.py
index 29a089f..024f97a 100644
--- a/lib/gui/gui.py
+++ b/lib/gui/gui.py
@@ -10,6 +10,7 @@ from PyQt5 import QtCore, QtGui, QtWidgets, uic
from lib.hardware import Hardware
from lib.su import Su
+from lib.disk import Disk
class SuGui(QtWidgets.QMainWindow):
"""
@@ -36,6 +37,29 @@ class SuGui(QtWidgets.QMainWindow):
# menubar
self.actionQuit.triggered.connect(self.close_button)
self.actionAbout.triggered.connect(self.about_button)
+ # edit lines
+ self.lineEdit_dump_file.editingFinished. \
+ connect(self.check_dump_file_path)
+ # radio buttons
+ self.radio_buttons = {
+ # samp_rate
+ self.rb_1mhz: 1e6,
+ self.rb_2mhz: 2e6,
+ self.rb_3mhz: 3e6,
+ # time to measure in seconds
+ self.rb_1m: 60,
+ self.rb_5m: 300,
+ self.rb_10m: 600,
+ self.rb_1h: 3600,
+ self.rb_24h: 86400
+ }
+ # add released actions to radio buttons
+ for button in self.radio_buttons.keys():
+ button.released.connect(self._update_status_label)
+
+ # labels
+ self._update_status_label()
+ self.label_file_overwrite.setText("change path")
def start_button(self):
"""
@@ -43,6 +67,8 @@ class SuGui(QtWidgets.QMainWindow):
"""
if self._check_dependencies_before_start_capture():
print self._extract_selected_hardware_device()
+ print self.lineEdit_dump_file.text()
+ self._get_checked_radio_buttons()
def stop_button(self):
"""
@@ -75,6 +101,22 @@ class SuGui(QtWidgets.QMainWindow):
"Contact: daniel.meissner@smail.inf.h-brs.de\n" \
"Source: https://git.fslab.de/dmeiss2s/su")
+ def check_dump_file_path(self):
+ """
+ Update labels for writable state and free disk space in path.
+ """
+ free_disk_space = Disk.free_disk_space(self.lineEdit_dump_file.text())
+ if free_disk_space == None:
+ self.label_disk_space.setText("")
+ self.label_file_overwrite.setText("not writable")
+ self.label_file_overwrite.setStyleSheet('color: red')
+ else:
+ self.label_file_overwrite.setText("")
+ self.label_disk_space.setText("Free disk space:\n" \
+ "" + Disk.sizeof_fmt(free_disk_space))
+ if free_disk_space - self._calculate_needed_disk_space() < 0:
+ self.label_disk_space.setStyleSheet('color: red')
+
def _get_default_dump_file_path(self):
"""
@@ -131,3 +173,31 @@ class SuGui(QtWidgets.QMainWindow):
return False
else:
return True
+
+ def _update_status_label(self):
+ needed_disk_space = Disk.sizeof_fmt(self._calculate_needed_disk_space())
+ self.label_status. \
+ setText("Needed disk space:\n" \
+ "" + needed_disk_space)
+
+ def _calculate_needed_disk_space(self):
+ """
+ Calculate needed disk space based on current check box status. Every
+ sample needs 8 byte of disk space (32 bit I, 32 bit Q).
+
+ Returned integer value.
+ """
+ time, samp_rate = self._get_checked_radio_buttons().values()
+
+ return int((time*samp_rate) * 8)
+
+ def _get_checked_radio_buttons(self):
+ """
+ Return a list of all checked radio buttons.
+ """
+ checked_buttons = {}
+ for radio_button, value in self.radio_buttons.iteritems():
+ if radio_button.isChecked():
+ checked_buttons[radio_button] = value
+
+ return checked_buttons
diff --git a/lib/gui/su_mainwindow.ui b/lib/gui/su_mainwindow.ui
index 66c64e8..35620f3 100644
--- a/lib/gui/su_mainwindow.ui
+++ b/lib/gui/su_mainwindow.ui
@@ -93,6 +93,9 @@
<property name="text">
<string extracomment="60">1 min</string>
</property>
+ <property name="autoExclusive">
+ <bool>true</bool>
+ </property>
</widget>
<widget class="QRadioButton" name="rb_5m">
<property name="geometry">
@@ -123,7 +126,7 @@
<bool>true</bool>
</property>
</widget>
- <widget class="QRadioButton" name="rb_1h_2">
+ <widget class="QRadioButton" name="rb_1h">
<property name="geometry">
<rect>
<x>10</x>
@@ -141,8 +144,11 @@
<property name="checked">
<bool>false</bool>
</property>
+ <property name="autoExclusive">
+ <bool>true</bool>
+ </property>
</widget>
- <widget class="QRadioButton" name="rb_1h">
+ <widget class="QRadioButton" name="rb_24h">
<property name="geometry">
<rect>
<x>10</x>
@@ -154,6 +160,9 @@
<property name="text">
<string extracomment="864000">24 h</string>
</property>
+ <property name="autoExclusive">
+ <bool>true</bool>
+ </property>
</widget>
</widget>
<widget class="QPushButton" name="button_stop">
@@ -304,6 +313,9 @@
<property name="textFormat">
<enum>Qt::PlainText</enum>
</property>
+ <property name="alignment">
+ <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignTop</set>
+ </property>
</widget>
<widget class="QGroupBox" name="box_hardware">
<property name="geometry">
@@ -414,8 +426,8 @@
<tabstop>rb_1m</tabstop>
<tabstop>rb_5m</tabstop>
<tabstop>rb_10m</tabstop>
- <tabstop>rb_1h_2</tabstop>
<tabstop>rb_1h</tabstop>
+ <tabstop>rb_24h</tabstop>
<tabstop>lineEdit_dump_file</tabstop>
<tabstop>comboBox_hardware</tabstop>
<tabstop>button_start</tabstop>
--
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