screen-brightness

Is there any command (or API) to set X.Org/Linux color brightness? In other words, I need something as handy as the xgamma command but for changing RGB brightness real-time . Is this possibile? Use the XF86VidMode* family of functions. #include <X11/Xlib.h> #include <X11/extensions/xf86vmode.h> #include <math.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> int main() { Display *display; int screen; int major, minor; int i; XF86VidModeGamma orig; display = XOpenDisplay(NULL); if (!display) return -1; screen = DefaultScreen(display); if (!XF86VidModeQueryVersion(display, &major,

Is there a way to adjust the Mac's display brightness in Objective-C? I have sensitive eyes, and sometimes the display seems like it could be darker. Combine that with Jeff's blog post about geeks and darkness, and it can get pretty annoying. I think it would stand to reason that if the display could be set as a number value, it could get set lower than the regular screen brightness. I have Googled all over, but all of the things that came up were about the iPhone. Is there a way to do it for Mac? just googled around and found this :) Here is the code how to get brightness. // almost

I am using following code to increase brightness. It is properly working in devices which are below Marshmallow. It is crashing in Marshmallow, and I did not find anything to give dynamic permission for Write-settings. Anybody has idea please help me. Settings.System.putInt(getContentResolver(), Settings.System.SCREEN_BRIGHTNESS_MODE, Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL); Settings.System.putInt(getContentResolver(), Settings.System.SCREEN_BRIGHTNESS, 255); int br = Settings.System.getInt(getContentResolver(), Settings.System.SCREEN_BRIGHTNESS); WindowManager.LayoutParams lp =

I am developing an iPhone application and I need to adjust the brightness of the screen through my application, in the same way as we do through the Settings app. I have searched but have not found a solution. You can use: [[UIScreen mainScreen] setBrightness:1.0]; But only on iOS 5. Not supported on earlier iOS versions. If you require compatibility with older iOS versions, try a black overlay on top of your application's main window with partial alpha. I used it in an iPad app - only downside is that it won't darken elements like popovers. Check out the brightness property of UIScreen . This

I need to adjust screen brightness/contrast by using Python. It will be a function in my code and it will be run when user presses a key, else script won't change the brigness/contrast. How can i make it in Python? Thank you very much I found what looks like a Linux-specific recipe here . For windows I think you need to find out what function you need to call in which dll (probably driver-specific) and use ctypes to make the required call. This is something that is OS-specific and probably not doable without system-specific bindings. dridk I m using the equation define here . So, to adjust

I'm using this method to set the screen to full brightness. @SuppressLint("NewApi") private void setFullBright() { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.CUPCAKE) { WindowManager.LayoutParams windowParams = getWindow().getAttributes(); windowParams.screenBrightness = 1.0f; getWindow().setAttributes(windowParams); } } If I want the full brightness to be set on the entire life of the Activity's screen, is the onCreate method the best place to call it? Is there an XML flag that can achieve this? Something like android:keepScreenOn="true" that mirrors the functionality of adding