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fix brightness calculations for backgrounds

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--fix brightness calculations for vertical edges
for the desktop backgrounds
--improve debug messages for the brightness calculations
at BackgroundTracker
pull/5/head
Michail Vourlakos 6 years ago
parent 46bf0c1229
commit fb718024cd
1 changed files with 32 additions and 20 deletions
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50
liblatte2/plasma/extended/backgroundcache.cpp
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@ -255,11 +255,11 @@ bool BackgroundCache::areaIsBusy(float bright1, float bright2)
//! 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 in ten different subareas and for each one its brightness
//! is computed. The brightness average from these areas provides the entire
//! The area is splitted in ten different Tiles and for each one its brightness
//! is computed. The brightness average from these tiles 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
//! subareas. If the difference it too big then the area is busy
//! tiles. If the difference it too big then the area is busy
void BackgroundCache::updateImageCalculations(QString imageFile, Plasma::Types::Location location)
{
if (m_hintsCache.size() > MAXHASHSIZE) {
@ -274,35 +274,45 @@ void BackgroundCache::updateImageCalculations(QString imageFile, Plasma::Types::
float maxBrightness{0};
float minBrightness{255};
bool vertical = (location == Plasma::Types::LeftEdge || location == Plasma::Types::RightEdge) ? true : false;
int imageLength = !vertical ? image.width() : image.height();
int tiles{qMin(10,imageLength)};
//! 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());
int tileThickness = !vertical ? qMin(24,image.height()) : qMin(24,image.width());
int tileLength = imageLength / tiles ;
bool vertical = image.width() > image.height() ? false : true;
int imageLength = image.width() > image.height() ? image.width() : image.height();
int areas{qMin(10,imageLength)};
int tileWidth = !vertical ? tileLength : tileThickness;
int tileHeight = !vertical ? tileThickness : tileLength;
float factor = ((float)100/areas)/100;
float factor = ((float)100/tiles)/100;
QList<float> subBrightness;
qDebug() << "------------ -- Image Calculations -- --------------" ;
qDebug() << "Hints for Background image | " << imageFile;
qDebug() << "Hints for Background image | Edge: " << location << ", Image size: " << image.width() << "x" << image.height() << ", Tiles: " << tiles << ", subsize: " << tileWidth << "x" << tileHeight;
//! Iterating algorigthm
int firstRow = 0; int firstColumn = 0; int endRow = 0; int endColumn = 0;
//! horizontal mask calculations
//! horizontal tiles calculations
if (location == Plasma::Types::TopEdge) {
firstRow = 0; endRow = maskHeight;
firstRow = 0; endRow = tileThickness;
} else if (location == Plasma::Types::BottomEdge) {
firstRow = image.height() - maskHeight - 1; endRow = image.height() - 1;
firstRow = image.height() - tileThickness - 1; endRow = image.height() - 1;
}
if (!vertical) {
for (int i=1; i<=areas; ++i) {
for (int i=1; i<=tiles; ++i) {
float subFactor = ((float)i) * factor;
firstColumn = endColumn+1; endColumn = (subFactor*imageLength) - 1;
endColumn = qMin(endColumn, imageLength-1);
int tempBrightness = brightnessFromArea(image, firstRow, firstColumn, endRow, endColumn);
qDebug() << " Tile considering horizontal << (" << firstColumn << "," << firstRow << ") - (" << endColumn << "," << endRow << "), subfactor: " << subFactor
<< ", brightness: " << tempBrightness;
subBrightness.append(tempBrightness);
if (tempBrightness > maxBrightness) {
@ -314,20 +324,23 @@ void BackgroundCache::updateImageCalculations(QString imageFile, Plasma::Types::
}
}
//! vertical mask calculations
//! vertical tiles calculations
if (location == Plasma::Types::LeftEdge) {
firstColumn = 0; endColumn = maskWidth;
firstColumn = 0; endColumn = tileThickness;
} else if (location == Plasma::Types::RightEdge) {
firstColumn = image.width() - 1 - maskWidth; endColumn = image.width() - 1;
firstColumn = image.width() - 1 - tileThickness; endColumn = image.width() - 1;
}
if (vertical) {
for (int i=1; i<=areas; ++i) {
for (int i=1; i<=tiles; ++i) {
float subFactor = ((float)i) * factor;
firstRow = endRow+1; endRow = (subFactor*imageLength) - 1;
endRow = qMin(endRow, imageLength-1);
int tempBrightness = brightnessFromArea(image, firstRow, firstColumn, endRow, endColumn);
qDebug() << " Tile considering vertical << (" << firstColumn << "," << firstRow << ") - (" << endColumn << "," << endRow << "), subfactor: " << subFactor
<< ", brightness: " << tempBrightness;
subBrightness.append(tempBrightness);
if (tempBrightness > maxBrightness) {
@ -349,8 +362,7 @@ void BackgroundCache::updateImageCalculations(QString imageFile, Plasma::Types::
bool areaBusy = areaIsBusy(minBrightness, maxBrightness);
qDebug() << " Hints for Background image | " << imageFile << " at Edge : " << location;
qDebug() << " Hints for Background image | Brightness: " << brightness << " Busy: " << areaBusy << " minBright:" << minBrightness << " maxBright:" << maxBrightness;
qDebug() << "Hints for Background image | Brightness: " << brightness << ", Busy: " << areaBusy << ", minBright:" << minBrightness << ", maxBright:" << maxBrightness;
if (!m_hintsCache.keys().contains(imageFile)) {
m_hintsCache[imageFile] = EdgesHash();

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