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increase sensitivity for background busyness

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This commit is contained in:
Michail Vourlakos 2019-01-05 16:21:14 +02:00
parent b3eaa35506
commit 1a643e9749
1 changed files with 10 additions and 6 deletions
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16
liblatte2/plasma/extended/backgroundcache.cpp
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@ -223,16 +223,19 @@ float BackgroundCache::brightnessFromArea(QImage &image, int firstRow, int first
bool BackgroundCache::areaIsBusy(float bright1, float bright2)
{
int brightDifference{80};
bool bright1IsLight = bright1>=123;
bool bright2IsLight = bright2>=123;
return qFabs(bright1-bright2)>=brightDifference;
bool inBounds = bright1>=0 && bright2<=255 && bright2>=0 && bright2<=255;
return !inBounds || bright1IsLight != bright2IsLight;
}
//! In order to calculate the brightness and busy hints for specific image
//! the code is doing the following. It is not needed to calculate these values
//! for the entire image that would also be cpu costly. The function takes
//! the location of the area in the image for which we are interested.
//! The area is splitted is ten different subareas and for each one its brightness
//! The area is splitted in fourty different subareas and for each one its brightness
//! is computed. The brightness average from these areas provides the entire
//! area brightness. In order to indicate if this area is busy or not we
//! compare the minimum and the maximum values of brightness from these
@ -246,13 +249,14 @@ void BackgroundCache::updateImageCalculations(QString imageFile, Plasma::Types::
float brightness{-1000};
float maxBrightness{0};
float minBrightness{255};
int areas{10};
int maskHeight = (0.08 * image.height());
int maskWidth = (0.05 * image.width());
//! 24px. should be enough because the views are always snapped to edges
int maskHeight = qMin(24,image.height()); // (0.08 * image.height());
int maskWidth = qMin(24,image.width()); //(0.05 * image.width());
bool vertical = image.width() > image.height() ? false : true;
int imageLength = image.width() > image.height() ? image.width() : image.height();
int areas{qMin(40,imageLength)};
float factor = (float)areas/100;