19#include <QGraphicsLineItem>
20#include <QGraphicsScene>
26#include <QRadioButton>
38 "DlgSettingsColorFilter",
40 m_scenePreview (nullptr),
41 m_viewPreview (nullptr),
42 m_filterThread (nullptr),
43 m_modelColorFilterBefore (nullptr),
44 m_modelColorFilterAfter (nullptr)
57 delete m_filterThread;
60void DlgSettingsColorFilter::createControls (QGridLayout *layout,
int &row)
64 QLabel *labelCurve =
new QLabel (QString (
"%1:").arg (tr (
"Curve Name")));
65 layout->addWidget (labelCurve, row++, 1);
67 m_cmbCurveName =
new QComboBox ();
68 m_cmbCurveName->setWhatsThis (tr (
"Name of the curve that is currently selected for editing"));
69 connect (m_cmbCurveName, SIGNAL (activated (
const QString &)),
this, SLOT (slotCurveName (
const QString &)));
70 layout->addWidget (m_cmbCurveName, row++, 1);
72 QLabel *labelProfile =
new QLabel (QString (
"%1:").arg (tr (
"Filter mode")));
73 layout->addWidget (labelProfile, row++, 1);
76 m_btnIntensity->setWhatsThis (tr (
"Filter the original image into black and white pixels using the Intensity parameter, "
77 "to hide unimportant information and emphasize important information.\n\n"
78 "The Intensity value of a pixel is computed from the red, green "
79 "and blue components as I = squareroot (R * R + G * G + B * B)"));
80 connect (m_btnIntensity, SIGNAL (released ()),
this, SLOT (slotIntensity ()));
81 layout->addWidget (m_btnIntensity, row++, 1);
84 m_btnForeground->setWhatsThis (tr (
"Filter the original image into black and white pixels by isolating the foreground from the background, "
85 "to hide unimportant information and emphasize important information.\n\n"
86 "The background color is shown on the left side of the scale bar.\n\n"
87 "The distance of any color (R, G, B) from the background color (Rb, Gb, Bb) is computed as "
88 "F = squareroot ((R - Rb) * (R - Rb) + (G - Gb) * (G - Gb) + (B - Bb)). On the left end of the "
89 "scale, the foreground distance value is zero, and it increases linearly to the maximum on the far right."));
90 connect (m_btnForeground, SIGNAL (released ()),
this, SLOT (slotForeground ()));
91 layout->addWidget (m_btnForeground, row++, 1);
94 m_btnHue->setWhatsThis (tr (
"Filter the original image into black and white pixels using the Hue component of the "
95 "Hue, Saturation and Value (HSV) color components, "
96 "to hide unimportant information and emphasize important information."));
97 connect (m_btnHue, SIGNAL (released ()),
this, SLOT (slotHue ()));
98 layout->addWidget (m_btnHue, row++, 1);
101 m_btnSaturation->setWhatsThis (tr (
"Filter the original image into black and white pixels using the Saturation component of the "
102 "Hue, Saturation and Value (HSV) color components, "
103 "to hide unimportant information and emphasize important information."));
104 connect (m_btnSaturation, SIGNAL (released ()),
this, SLOT (slotSaturation ()));
105 layout->addWidget (m_btnSaturation, row++, 1);
108 m_btnValue->setWhatsThis (tr (
"Filter the original image into black and white pixels using the Value component of the "
109 "Hue, Saturation and Value (HSV) color components, "
110 "to hide unimportant information and emphasize important information.\n\n"
111 "The Value component is also called the Lightness."));
112 connect (m_btnValue, SIGNAL (released ()),
this, SLOT (slotValue ()));
113 layout->addWidget (m_btnValue, row++, 1);
120void DlgSettingsColorFilter::createPreview (QGridLayout *layout,
int &row)
124 QLabel *labelPreview =
new QLabel (tr (
"Preview"));
125 layout->addWidget (labelPreview, row++, 0, 1, 5);
127 m_scenePreview =
new QGraphicsScene (
this);
131 m_viewPreview->setWhatsThis (tr (
"Preview window that shows how current settings affect the filtering of the original image."));
132 m_viewPreview->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
133 m_viewPreview->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
135 m_viewPreview->setRenderHint(QPainter::Antialiasing);
137 layout->addWidget (m_viewPreview, row++, 0, 1, 5);
140void DlgSettingsColorFilter::createProfileAndScale (QGridLayout *layout,
int &row)
144 const int MINIMUM_VIEW_PROFILE_WIDTH = 70;
146 QLabel *labelProfile =
new QLabel (tr (
"Filter Parameter Histogram Profile"));
147 layout->addWidget (labelProfile, row++, 3);
149 m_sceneProfile =
new QGraphicsScene;
150 m_sceneProfile->setSceneRect(0, 0, PROFILE_SCENE_WIDTH (), PROFILE_SCENE_HEIGHT ());
152 m_viewProfile =
new ViewProfile (m_sceneProfile,
153 MINIMUM_VIEW_PROFILE_WIDTH);
154 m_viewProfile->setWhatsThis (tr (
"Histogram profile of the selected filter parameter. The two Dividers can be moved back and forth to adjust "
155 "the range of filter parameter values that will be included in the filtered image. The clear portion will "
156 "be included, and the shaded portion will be excluded."));
157 layout->addWidget (m_viewProfile, row, 3, PROFILE_HEIGHT_IN_ROWS (), 1);
158 row += PROFILE_HEIGHT_IN_ROWS ();
160 m_scale =
new ViewProfileScale (MINIMUM_VIEW_PROFILE_WIDTH);
161 m_scale->setWhatsThis (tr (
"This read-only box displays a graphical representation of the horizontal axis in the histogram profile above."));
162 m_scale->setAutoFillBackground(
true);
163 layout->addWidget (m_scale, row++, 3, 1, 1);
170 const int EMPTY_COLUMN_WIDTH = 40;
172 QWidget *subPanel =
new QWidget ();
173 QGridLayout *layout =
new QGridLayout (subPanel);
174 subPanel->setLayout (layout);
176 layout->setColumnStretch(0, 0);
177 layout->setColumnMinimumWidth(0, EMPTY_COLUMN_WIDTH);
178 layout->setColumnStretch(1, 0);
179 layout->setColumnMinimumWidth(1, 210);
180 layout->setColumnStretch(2, 0);
181 layout->setColumnMinimumWidth(2, 15);
182 layout->setColumnStretch(3, 1);
183 layout->setColumnMinimumWidth(4, EMPTY_COLUMN_WIDTH);
184 layout->setColumnStretch(4, 0);
186 int rowLeft = 0, rowRight = 0;
187 createControls (layout, rowLeft);
188 createProfileAndScale (layout, rowRight);
190 int row = qMax (rowLeft, rowRight);
191 createPreview (layout, row);
196QRgb DlgSettingsColorFilter::createThread ()
206 if (m_filterThread ==
nullptr) {
211 m_filterThread->start();
214 return rgbBackground;
223 *m_modelColorFilterBefore,
224 *m_modelColorFilterAfter);
237 delete m_modelColorFilterBefore;
238 delete m_modelColorFilterAfter;
245 m_cmbCurveName->clear ();
247 QStringList curveNames =
cmdMediator.curvesGraphsNames();
248 QStringList::const_iterator itr;
249 for (itr = curveNames.begin (); itr != curveNames.end (); itr++) {
251 QString curveName = *itr;
252 m_cmbCurveName->addItem (curveName);
256 m_cmbCurveName->setCurrentText (
mainWindow().selectedGraphCurve());
262void DlgSettingsColorFilter::loadForCurveName()
267 QString curveName = m_cmbCurveName->currentText();
270 if (!curveName.isEmpty () && m_modelColorFilterAfter !=
nullptr) {
280 m_scenePreview->clear();
282 m_scenePreview->addPixmap (QPixmap::fromImage (m_imagePreview));
284 QRgb rgbBackground = createThread ();
299void DlgSettingsColorFilter::slotCurveName(
const QString & )
306void DlgSettingsColorFilter::slotDividerHigh (
double xCenter)
308 m_modelColorFilterAfter->setHigh (m_cmbCurveName->currentText(),
309 xCenter / double (PROFILE_SCENE_WIDTH ()));
313void DlgSettingsColorFilter::slotDividerLow (
double xCenter)
315 m_modelColorFilterAfter->setLow (m_cmbCurveName->currentText(),
316 xCenter / double (PROFILE_SCENE_WIDTH ()));
320void DlgSettingsColorFilter::slotForeground ()
324 m_modelColorFilterAfter->setColorFilterMode(m_cmbCurveName->currentText(),
330void DlgSettingsColorFilter::slotHue ()
334 m_modelColorFilterAfter->setColorFilterMode(m_cmbCurveName->currentText(),
340void DlgSettingsColorFilter::slotIntensity ()
344 m_modelColorFilterAfter->setColorFilterMode(m_cmbCurveName->currentText(),
350void DlgSettingsColorFilter::slotSaturation ()
354 m_modelColorFilterAfter->setColorFilterMode(m_cmbCurveName->currentText(),
368 for (
int xFrom = 0, xTo = xLeft; xFrom < image.width(); xFrom++, xTo++) {
369 for (
int y = 0; y < image.height (); y++) {
371 QColor pixel = image.pixel (xFrom, y);
372 m_imagePreview.setPixel (xTo, y, pixel.rgb());
377 QGraphicsItem *itemPixmap = m_scenePreview->items().at(0);
378 m_scenePreview->removeItem (itemPixmap);
382 m_scenePreview->addPixmap (QPixmap::fromImage (m_imagePreview));
385void DlgSettingsColorFilter::slotValue ()
395void DlgSettingsColorFilter::updateHistogram()
401 const double PEN_WIDTH = 0.0;
403 QString curveName = m_cmbCurveName->currentText();
405 m_sceneProfile->clear();
407 m_scale->setColorFilterMode (m_modelColorFilterAfter->colorFilterMode(curveName));
415 ColorFilterHistogram filterHistogram;
419 m_modelColorFilterAfter->colorFilterMode (curveName),
425 double logMaxBinCount = qLn (maxBinCount);
426 if (qAbs (logMaxBinCount) > 0) {
432 double count0 = 1.0 + histogramBins [bin - 1];
433 double y0 = (PROFILE_SCENE_HEIGHT () - 1.0) * (1.0 - qLn (count0) / logMaxBinCount);
438 double count1 = 1.0 + histogramBins [bin];
439 double y1 = (PROFILE_SCENE_HEIGHT () - 1.0) * (1.0 - qLn (count1) / logMaxBinCount);
441 QGraphicsLineItem *line =
new QGraphicsLineItem (x0, y0, x1, y1);
442 line->setPen (QPen (QBrush (Qt::black), PEN_WIDTH));
443 m_sceneProfile->addItem (line);
448 m_dividerLow =
new ViewProfileDivider(*m_sceneProfile,
450 PROFILE_SCENE_WIDTH (),
451 PROFILE_SCENE_HEIGHT (),
452 qFloor (PROFILE_SCENE_HEIGHT () * 2.0 / 3.0),
454 m_dividerHigh =
new ViewProfileDivider(*m_sceneProfile,
456 PROFILE_SCENE_HEIGHT (),
457 PROFILE_SCENE_WIDTH (),
458 qFloor (PROFILE_SCENE_HEIGHT () / 3.0),
463 connect (m_dividerLow, SIGNAL (signalMovedLow (
double)), m_dividerHigh, SLOT (slotOtherMoved(
double)));
464 connect (m_dividerHigh, SIGNAL (signalMovedHigh (
double)), m_dividerLow, SLOT (slotOtherMoved(
double)));
467 connect (m_dividerLow, SIGNAL (signalMovedLow (
double)),
this, SLOT (slotDividerLow (
double)));
468 connect (m_dividerHigh, SIGNAL(signalMovedHigh (
double)),
this, SLOT (slotDividerHigh (
double)));
470 if (m_btnForeground->isChecked()) {
476 }
else if (m_btnIntensity->isChecked()) {
482 }
else if (m_btnHue->isChecked()) {
485 m_dividerLow->setX (m_modelColorFilterAfter->hueLow(curveName),
HUE_MIN,
HUE_MAX);
486 m_dividerHigh->setX (m_modelColorFilterAfter->hueHigh(curveName),
HUE_MIN,
HUE_MAX);
488 }
else if (m_btnSaturation->isChecked()) {
494 }
else if (m_btnValue->isChecked()) {
497 m_dividerLow->setX (m_modelColorFilterAfter->valueLow(curveName),
VALUE_MIN,
VALUE_MAX);
498 m_dividerHigh->setX (m_modelColorFilterAfter->valueHigh(curveName),
VALUE_MIN,
VALUE_MAX);
507 delete[] histogramBins;
510void DlgSettingsColorFilter::updatePreview ()
517 QString curveName = m_cmbCurveName->currentText();
519 m_modelColorFilterAfter->low(curveName),
520 m_modelColorFilterAfter->high(curveName));
const QString AXIS_CURVE_NAME
const int INTENSITY_MIN
Constants for use by CurveFilter and other curve-related classes.
QString colorFilterModeToString(ColorFilterMode colorFilterMode)
@ COLOR_FILTER_MODE_FOREGROUND
@ COLOR_FILTER_MODE_VALUE
@ COLOR_FILTER_MODE_INTENSITY
@ COLOR_FILTER_MODE_SATURATION
const int MINIMUM_DIALOG_WIDTH_COLOR_FILTER
#define ENGAUGE_ASSERT(cond)
Drop in replacement for Q_ASSERT.
log4cpp::Category * mainCat
Command for DlgSettingsColorFilter.
void generate(const ColorFilter &filter, double histogramBins[], ColorFilterMode colorFilterMode, const QImage &image, int &maxBinCount) const
Generate the histogram.
static int HISTOGRAM_BINS()
Number of histogram bins.
Class for filtering image to remove unimportant information.
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...
Class for processing new filter settings. This is based on http://blog.debao.me/2013/08/how-to-use-qt...
DlgSettingsAbstractBase(const QString &title, const QString &dialogName, MainWindow &mainWindow)
Single constructor.
void setCmdMediator(CmdMediator &cmdMediator)
Store CmdMediator for easy access by the leaf class.
void finishPanel(QWidget *subPanel, int minimumWidth=MINIMUM_DIALOG_WIDTH, int minimumHeightOrZero=0)
Add Ok and Cancel buttons to subpanel to get the whole dialog.
CmdMediator & cmdMediator()
Provide access to Document information wrapped inside CmdMediator.
void enableOk(bool enable)
Let leaf subclass control the Ok button.
static int MINIMUM_PREVIEW_HEIGHT
Dialog layout constant that guarantees preview has sufficent room.
MainWindow & mainWindow()
Get method for MainWindow.
virtual void load(CmdMediator &cmdMediator)
Load settings from Document.
DlgSettingsColorFilter(MainWindow &mainWindow)
Single constructor.
virtual QWidget * createSubPanel()
Create dialog-specific panel to which base class will add Ok and Cancel buttons.
virtual void createOptionalSaveDefault(QHBoxLayout *layout)
Let subclass define an optional Save As Default button.
virtual void setSmallDialogs(bool smallDialogs)
If false then dialogs have a minimum size so all controls are visible.
void slotTransferPiece(int xLeft, QImage image)
Receive processed piece of preview image, to be inserted at xLeft to xLeft+pixmap....
virtual void handleOk()
Process slotOk.
virtual ~DlgSettingsColorFilter()
void signalApplyFilter(ColorFilterMode colorFilterMode, double low, double high)
Send filter parameters to DlgFilterThread and DlgFilterWorker for processing.
Model for DlgSettingsColorFilter and CmdSettingsColorFilter.
ColorFilterMode colorFilterMode(const QString &curveName) const
Get method for filter mode.
void setColorFilterMode(const QString &curveName, ColorFilterMode colorFilterMode)
Set method for filter mode.
QPixmap pixmap() const
Return the image that is being digitized.
Main window consisting of menu, graphics scene, status bar and optional toolbars as a Single Document...
Class that modifies QGraphicsView to automatically expand/shrink the view to fit the window,...
@ VIEW_ASPECT_RATIO_VARIABLE
void setBackgroundColor(QRgb rgbBackground)
Save the background color for foreground calculations.
#define LOG4CPP_INFO_S(logger)
#define LOG4CPP_ERROR_S(logger)