27 qDeleteAll (m_strategies);
33 const long MASK = 0xf0f0f0f0;
34 return (rgb1 & MASK) == (rgb2 & MASK);
37 void ColorFilter::createStrategies ()
47 QImage &imageFiltered,
57 for (
int x = 0; x < imageOriginal.width(); x++) {
58 for (
int y = 0; y < imageOriginal.height (); y++) {
60 QColor pixel = imageOriginal.pixel (x, y);
62 if (pixel.rgb() != rgbBackground) {
71 imageFiltered.setPixel (x, y, (isOn ?
72 QColor (Qt::black).rgb () :
73 QColor (Qt::white).rgb ()));
81 ColorList colorCounts;
82 for (
int x = 0; x < image->width (); x++) {
83 mergePixelIntoColorCounts (image->pixel (x, 0), colorCounts);
84 mergePixelIntoColorCounts (image->pixel (x, image->height () - 1), colorCounts);
86 for (
int y = 0; y < image->height (); y++) {
87 mergePixelIntoColorCounts (image->pixel (0, y), colorCounts);
88 mergePixelIntoColorCounts (image->pixel (image->width () - 1, y), colorCounts);
94 for (ColorList::const_iterator itr = colorCounts.begin (); itr != colorCounts.end (); itr++) {
95 if ((*itr).count > entryMax.
count) {
100 return entryMax.
color.rgb();
103 void ColorFilter::mergePixelIntoColorCounts (QRgb pixel,
104 ColorList &colorCounts)
const
112 for (ColorList::iterator itr = colorCounts.begin (); itr != colorCounts.end (); itr++) {
114 (*itr).color.rgb())) {
122 colorCounts.append (entry);
134 (x < image.width()) &&
135 (y < image.height())) {
139 const int BLACK_WHITE_THRESHOLD = 255 / 2;
140 int gray = qGray (
pixelRGB (image, x, y));
141 rtn = (gray < BLACK_WHITE_THRESHOLD);
152 double high0To1)
const
160 if (low0To1 <= high0To1) {
163 rtn = (low0To1 <= s) && (s <= high0To1);
168 rtn = (s <= high0To1) || (low0To1 <= s);
178 QRgb rgbBackground)
const
180 if (m_strategies.contains (colorFilterMode)) {
198 if (m_strategies.contains (colorFilterMode)) {
Leaf class for foreground strategy for ColorFilter.
virtual int zeroToOneToValue(double s) const =0
Return the low value normalized to 0 to 1.
QRgb pixelRGB(const QImage &image, int x, int y)
Get pixel method for any bit depth.
double pixelToZeroToOneOrMinusOne(ColorFilterMode colorFilterMode, const QColor &pixel, QRgb rgbBackground) const
Return pixel converted according to the current filter parameter, normalized to zero to one...
QColor color
Unique color entry.
Base class for strategy pattern whose subclasses process the different color filter settings modes (o...
int zeroToOneToValue(ColorFilterMode colorFilterMode, double s) const
Inverse of pixelToZeroToOneOrMinusOne.
QRgb marginColor(const QImage *image) const
Identify the margin color of the image, which is defined as the most common color in the four margins...
ColorFilter()
Single constructor.
unsigned int count
Number of times this color has appeared.
Leaf class for value strategy for ColorFilter.
bool colorCompare(QRgb rgb1, QRgb rgb2) const
See if the two color values are close enough to be considered to be the same.
Leaf class for intensity strategy for ColorFilter.
bool pixelFilteredIsOn(const QImage &image, int x, int y) const
Return true if specified filtered pixel is on.
Leaf class for hue strategy for ColorFilter.
virtual double pixelToZeroToOne(const QColor &pixel, QRgb rgbBackground) const =0
Return a normalized value of 0 to 1 given input pixel.
Helper class so ColorFilter class can compute the background color.
bool pixelUnfilteredIsOn(ColorFilterMode colorFilterMode, const QColor &pixel, QRgb rgbBackground, double low0To1, double high0To1) const
Return true if specified unfiltered pixel is on.
Leaf class for saturation strategy for ColorFilter.
~ColorFilter()
Destructor deallocates memory.
void filterImage(const QImage &imageOriginal, QImage &imageFiltered, ColorFilterMode colorFilterMode, double low, double high, QRgb rgbBackground)
Filter the original image according to the specified filtering parameters.
#define ENGAUGE_ASSERT(cond)
Drop in replacement for Q_ASSERT if defined(QT_NO_DEBUG) && !defined(QT_FORCE_ASSERTS) define ENGAUGE...