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KTemperature

1.9

KDE Logging/Monitoring

Score 82%

avasaralak
Home

Link: Link
Downloads: 8834

Submitted: May 27 2005
Updated: Oct 10 2005

Description:

KTemperature is an application to monitor the system temperature. I was motivated to develop this utility because I could not find a simple system tray resident application for monitoring the system temperature using the ACPI interface.

The application obtains the system temperature from the file /proc/acpi/thermal_zone/THRM/temperature .

I have been using Linux and Open Source for quite sometime and this is my first contribution. I hope this will lead to
many more contributions from me.

SuSE 9.2 rpm for the i686 platform is available for download.
The available rpm also works for SuSE 9.3.
The rpm available for download can be installed on SuSE 10.0 as well.

Changelog:

Version 1.1
Added check for the presence of /proc/acpi/thermal_zone/THRM/temperature file. If the file is not present the temperature will be displayed as NA.

Version 1.2
Corrected typo.
Visual representation of the "hotness" of the system.
The system maximum temperature can be provided as an input. The system tray icon will change redness depending on the ratio of provided maximum temperature to the current temperature.

Version 1.3
Configurable temperature monitoring interface, can be anything as long as the temperature can be obtained by doing a read operation on the file.
Stored configuration. The configuration is stored in $HOME/.ktemperatue and read on startup.
Increased sensitivity of redness to temperature changes.

Version 1.4
Auto adjusting text font. The color of the text adjusts to a compliment of the background color, This ensures that the text is clearly visible irrespective of the redness of the systray icon.
More prominent text. The text is bold faced and the font of the text is bigger.

Version 1.5
Changes of parameters (polling interval and max, temperature) take instantaneous effect without having to restart the application.
Boundary values cases of redness, the calculation of redness difference between the background and the foreground has been modified to ensure a minimum difference.
Text alignment, the temperature text will be aligned in the middle both vertically and horizontally.

Version 1.6
Auto loading of the neccessary ACPI thermal module and its dependencies if, required. The root password is checked prior to loading the modules.
Detection of two variants of the thermal interface, namely
/proc/acpi/thermal_zone/THRM and
/proc/acpi/thermal_zone/THM

Version 1.7
The ACPI thermal interface was being detected by searching the /proc/modules file. However, that approach will lead to an irritating request for root password in cases where the module in compiled into the kernel. The thermal interface detection has been modified to take care of the above case.

Version 1.8
Added Pause, Restart and Update options in the right click menu for more control of polling.
Cleaned the auto detection of ACPI thermal interface. The first file in the thermal_zone directory(other than .. and .)is taken as the temperature file.
Fixed the width of the main window to be always greater than the width of widest child window.

Version 1.9
Changed the implementation of 'redness' from RGB space to HSV space for greater sensitivity.
The background color changes from green at minimum temperature to red at maximum temperature.
The text is always constant and will have a clear contrast all temperatures.
Replace memcpy with strcpy in monitor interface selection.
Interface(s) selected in the drop down list will be honoured when the Set button is clicked after the selection.
Used grid layout for the main widget.

Version 1.9-1
Created archive to include version information.
Added keyboard shortcuts to right click menu options.
Added caption to root password dialog.

I would like to acknowledge the suggestions that I have received. The changes have been made taking into account these suggestions.

License: GPL

(Source for KTemperature 1.9-1)

(i686 rpm for SuSE 9.2, 9.3 and SuSE 10.0)

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suggestions

by blilly on: Jun 2 2005

Score 50%

blilly

1. change text color for good contrast with the background. Dark text on a dark background isn't very legible

2. maybe add graphing capability (e.g. like knemo has)

Reply to this

Re: suggestions

by avasaralak on: Jun 3 2005

Score 50%

avasaralak
Home

Since the background color of the system tray changes depending on the system temperature, I think there is no one color that will be consistently visible all the time. However, I will try to make the text bolder.

Reply to this

more suggestions

by blilly on: Jun 6 2005

Score 50%

blilly

Thanks for listening.

However, there's still a problem: consider what happens when (under defaults) the temperature is 52 C.
red = 123, green = blue = 132. Text
is R=132, G=B=123; very low contrast.
Ideally, you'd want to work in HSV,
with complementary hue, similar saturation, and widely different value.

Also, now the text is too big; it's clipped after the first digit.

And one more issue is that changes made in the dialog box don;t take effect until ktemperature is quit and restarted.

A quick hack for the first two issues (black text on light background, white on dark) and a fix for the third is:

* src/ktemperaturewidget.cpp.original Mon Jun 6 13:56:17 2005
--- src/ktemperaturewidget.cpp Mon Jun 6 14:17:11 2005
***********
* 87,92 ****
--- 87,94 ----
{
fprintf(configFilePtr,"%d %d %s",pollIntreval,maxSysTemperature,monitorInterface);
fclose(configFilePtr);
+ rednessStep = 255.0/(maxSysTemperature - 35.0);
+ pollTimer->start( pollIntreval * 1000 );
}
hide();
}
*************
* 106,112 ****
FILE* temperatureFile;
QColor sysTrayColor,textColor;
char temperatureString[32];
! int red,blue,green;

//temperatureFile = fopen("/proc/acpi/thermal_zone/THRM/temperature","r");
temperatureFile = fopen(monitorInterface,"r");
--- 108,114 ----
FILE* temperatureFile;
QColor sysTrayColor,textColor;
char temperatureString[32];
! int red,blue,green, v;

//temperatureFile = fopen("/proc/acpi/thermal_zone/THRM/temperature","r");
temperatureFile = fopen(monitorInterface,"r");
*************
* 132,138 ****
blue = 255 - red;

sysTrayColor.setRgb(red,blue,green);
! textColor.setRgb(255 - red,255 - green,255 - blue);
trayObject->setPaletteBackgroundColor (sysTrayColor);
trayObject->setPaletteForegroundColor(textColor);
trayObject->repaint();
--- 134,144 ----
blue = 255 - red;

sysTrayColor.setRgb(red,blue,green);
! v = (red * 29 + green * 59 + blue * 11) / 100;
! if (v >=128)
! textColor.setRgb(0,0,0);
! else
! textColor.setRgb(255,255,255);
trayObject->setPaletteBackgroundColor (sysTrayColor);
trayObject->setPaletteForegroundColor(textColor);
trayObject->repaint();
* src/main.cpp.original Mon Jun 6 14:11:04 2005
--- src/main.cpp Mon Jun 6 14:12:38 2005
***********
* 48,54 ****
KApplication app;
KTemperatureWidget mainWin = 0;
KSystemTray systemTray = 0;
! QFont sysTrayFont("Times New Roman", 20, QFont::Bold);
KCmdLineArgs args = KCmdLineArgs::parsedArgs();

/// @todo do something with the command line args here
--- 48,54 ----
KApplication app;
KTemperatureWidget mainWin = 0;
KSystemTray systemTray = 0;
! QFont sysTrayFont("Times New Roman", 16, QFont::Bold);
KCmdLineArgs args = KCmdLineArgs::parsedArgs();

/// @todo do something with the command line args here

Reply to this

Re: more suggestions

by avasaralak on: Jun 6 2005

Score 50%

avasaralak
Home

Good catch. I overlooked the case since my laptop runs quite hot (always around 60), hence everything was ok for me. Will quite certainly incorporate the changes.

Reply to this

very nice

by rickvernam on: Jun 19 2005

Score 50%

rickvernam

first, this is very complimentary to my laptop, it is a portable space heater as much as it is a laptop!

Anyway...an option in the right-click menu to 'update now' would be nice.

Reply to this

Re: very nice

by avasaralak on: Jun 22 2005

Score 50%

avasaralak
Home

Added Pause, Restart and Update options to the right click menu.

Reply to this

bugs

by blilly on: Jun 22 2005

Score 50%

blilly

1 when changing file source, the string isn't properly terminated. Patch:
* src/ktemperaturewidget.cpp.orig Wed Jun 22 09:47:29 2005
--- src/ktemperaturewidget.cpp Wed Jun 22 09:47:37 2005
***********
* 191,197 ****

void KTemperatureWidget::monitorInterfaceSelect_urlSelected(const QString& selectedInterface)
{
! memcpy(monitorInterface, selectedInterface.ascii(), selectedInterface.length());
}

/!
--- 191,197 ----

void KTemperatureWidget::monitorInterfaceSelect_urlSelected(const QString& selectedInterface)
{
! memcpy(monitorInterface, selectedInterface.ascii(), selectedInterface.length()+1);
}

/!

2. The right side of the "Open file dialog" button still seems to be cut off.

3. when changing file source, changes from the pull-down menu don't take effect. The open file dialog has to be used every time

4. Contrast is still very low ca. 48 C.
This probably can't be fixed satisfactorily in RGB space. I'll post a separate set of suggested patches to handle this issue in HSV space.

Reply to this

improved contrast

by blilly on: Jun 22 2005

Score 50%

blilly

The following patch changes the background color from low-saturation green at 37 C through yellow and orange to fully-saturated red at the maximum temperature (which can;t be set lower than 38 C to avoid divide-by-zero errors); below 37 C, the color becomes a progrssively more saturated blue.
Text is set for good contrast with the background.

(don't blame me for kde-apps.org screw-ups of patch text)

* src/ktemperaturewidgetbase.ui.orig Wed Jun 22 11:04:29 2005
--- src/ktemperaturewidgetbase.ui Wed Jun 22 11:08:24 2005
***********
* 126,132 **
70

! 0

80
--- 126,132 ----
70

! 38

80
* src/ktemperaturewidget.cpp.orig Wed Jun 22 10:47:44 2005
--- src/ktemperaturewidget.cpp Wed Jun 22 11:17:45 2005
*************
* 91,97 ****
fclose(configFilePtr);
}
monitorInterfaceSelect->setProperty("url", monitorInterface);
- rednessStep = 255.0/(maxSysTemperature - 35.0);
pollTimer = new QTimer( this );
connect( pollTimer, SIGNAL(timeout()),this, SLOT(checkTemperature()));
pollTimer->start( pollIntreval * 1000 );
--- 91,96 ----
*************
* 116,122 ****
pollTimer->start( pollIntreval * 1000 );

maxSysTemperature = sysMaxTempInput->value();
- rednessStep = 255.0/(maxSysTemperature - 35.0);

configFilePtr = fopen(configFile,"w");
if(configFilePtr == NULL)
--- 115,120 ----
*************
* 141,148 ****
FILE* temperatureFile;
QColor sysTrayColor,textColor;
char temperatureString[32];
! int bgRed,fgRed;
!
//temperatureFile = fopen("/proc/acpi/thermal_zone/THRM/temperature","r");
temperatureFile = fopen(monitorInterface,"r");
if(temperatureFile == NULL)
--- 139,147 ----
FILE* temperatureFile;
QColor sysTrayColor,textColor;
char temperatureString[32];
! int temperature, hue, saturation, value, green_temp;
!
! green_temp = sysMaxTempInput->minValue() - 1;
//temperatureFile = fopen("/proc/acpi/thermal_zone/THRM/temperature","r");
temperatureFile = fopen(monitorInterface,"r");
if(temperatureFile == NULL)
*************
* 154,178 ****
fscanf(temperatureFile,"%s",temperatureString);
fclose(temperatureFile);

! bgRed = (int)((atoi(temperatureString) - 35.0) * rednessStep);
! if(bgRed < 0)
! {
! bgRed = 0;
! }
! if(bgRed > 255)
! {
! bgRed = 255;
! }
!
! fgRed = 255 - bgRed;
!
! if((bgRed - fgRed) < 100)
! {
! fgRed = bgRed - 100;
! }
!
! sysTrayColor.setRgb(bgRed,255 - bgRed,255 - bgRed);
! textColor.setRgb(fgRed,255 - fgRed,255 - fgRed);
trayObject->setPaletteBackgroundColor (sysTrayColor);
trayObject->setPaletteForegroundColor(textColor);
trayObject->repaint();
--- 153,178 ----
fscanf(temperatureFile,"%s",temperatureString);
fclose(temperatureFile);

! temperature = atoi(temperatureString);
! hue = (maxSysTemperature - temperature) * 120 / (maxSysTemperature - green_temp); /* green at green_temp, red at maxSysTemperature /
! if (hue < 0)
! hue = 0; / red /
! if (hue > 240)
! hue = 240; / blue /
! #define MINSAT 100
! saturation = MINSAT + abs((255 - MINSAT) (temperature - green_temp) / (maxSysTemperature - green_temp)); /* minimum at green_temp, fully saturated at maxSysTemperature */
! if (saturation > 255)
! saturation = 255;
! if (saturation < MINSAT)
! saturation = MINSAT;
!
! sysTrayColor.setHsv(hue,saturation,255);
! if (hue 127? 0: 255);
trayObject->setPaletteBackgroundColor (sysTrayColor);
trayObject->setPaletteForegroundColor(textColor);
trayObject->repaint();

Reply to this

configure: error

by maxxrad on: Jun 24 2005

Score 50%

maxxrad
Home

I am getting the following error while compiling:

configure: error: We need a working libXext to proceed.

I had to execute the following to get it this far:

[root@lypo ktemperature]# ./configure --x-includes=/usr/X11R6/include/ --x-libraries=/usr/X11R6/lib/

how do I get it to find the libXext?? It is installed.
I am running Fedora Core 4

thanks

Don Dupy
Reply to this

Re: configure: error

by avasaralak on: Jun 24 2005

Score 50%

avasaralak
Home

Do you libXext.so or libXext.so.* ? If you do not have libXext.so, can you try creating a link libXext.so to libXext.so.* ?

Reply to this

Re: Re: configure: e

by maxxrad on: Jun 24 2005

Score 50%

maxxrad
Home

In my /usr/X11R6/lib I have a libXext.so.6.4 and a link to it that is libXext.so.6. Do I need to make just a libXext.so and link it to libXext.so.6?

Don
Reply to this

Re: Re: Re: configur

by avasaralak on: Jun 24 2005

Score 50%

avasaralak
Home

Try ln -s libXext.so.6 libXext.so.

Reply to this

Re: conf

by maxxrad on: Jun 25 2005

Score 50%

maxxrad
Home

that didn't work.
any other ideas?

Reply to this

Re: Re: conf

by avasaralak on: Jun 26 2005

Score 50%

avasaralak
Home

Actually I have 2 links to libXext.so.6.4 namely
libXext.so and libXext.so.6
I tried configure removing each link and it failed after I removed the link from libXext.so.6 to libXext.so.6.4 complaining about kde-config returning a null path to kdelibs.
Do you kde-config insatlled ?

Reply to this

Version numbers

by vadimt on: Jun 26 2005

Score 50%

vadimt

Please add version numbers to your source archives. The way it currently is complicates the creation of packages in some distributions.

For instance, Gentoo keeps md5 sums of the tar.gz files, and will refuse to install if it changes, which will happen when you release a new version.

Please name your archives like this:
ktemperature-1.9.tar.gz

And make sure you never change a file once released, as it will cause problems.

The archive should decompress into a directory that also includes the version number.

Once you do this, I will contribute a Gentoo ebuild and submit it to the Gentoo bug tracker.

Reply to this

Re: Version numbers

by avasaralak on: Jun 26 2005

Score 50%

avasaralak
Home

Thank you for the suggestion. Henceforth I will upload with the version number.

Reply to this

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KTemperature

KDE Logging/Monitoring

suggestions

1. change text color for good contrast with the background. Dark text on a dark background isn't very legible 2. maybe add graphing capability (e.g. like knemo has)

Re: suggestions

Since the background color of the system tray changes depending on the system temperature, I think there is no one color that will be consistently visible all the time. However, I will try to make the text bolder.

more suggestions

Re: more suggestions

Good catch. I overlooked the case since my laptop runs quite hot (always around 60), hence everything was ok for me. Will quite certainly incorporate the changes.

very nice

first, this is very complimentary to my laptop, it is a portable space heater as much as it is a laptop! Anyway...an option in the right-click menu to 'update now' would be nice.

Re: very nice

Added Pause, Restart and Update options to the right click menu.

bugs

improved contrast

configure: error

Re: configure: error

Do you libXext.so or libXext.so.* ? If you do not have libXext.so, can you try creating a link libXext.so to libXext.so.* ?

Re: Re: configure: e

In my /usr/X11R6/lib I have a libXext.so.6.4 and a link to it that is libXext.so.6. Do I need to make just a libXext.so and link it to libXext.so.6?

Re: Re: Re: configur

Try ln -s libXext.so.6 libXext.so.

Re: conf

that didn't work. any other ideas?

Re: Re: conf

Actually I have 2 links to libXext.so.6.4 namely libXext.so and libXext.so.6 I tried configure removing each link and it failed after I removed the link from libXext.so.6 to libXext.so.6.4 complaining about kde-config returning a null path to kdelibs. Do you kde-config insatlled ?

Version numbers

Re: Version numbers

Thank you for the suggestion. Henceforth I will upload with the version number.

1. change text color for good contrast with the background. Dark text on a dark background isn't very legible

2. maybe add graphing capability (e.g. like knemo has)

first, this is very complimentary to my laptop, it is a portable space heater as much as it is a laptop!

Anyway...an option in the right-click menu to 'update now' would be nice.

that didn't work.
any other ideas?

Actually I have 2 links to libXext.so.6.4 namely
libXext.so and libXext.so.6
I tried configure removing each link and it failed after I removed the link from libXext.so.6 to libXext.so.6.4 complaining about kde-config returning a null path to kdelibs.
Do you kde-config insatlled ?