#include "toonzqt/combohistogram.h"
#include "tcolorstyles.h"
#include <QVBoxLayout>
#include <QGridLayout>
#include <QComboBox>
#include <QStackedWidget>
#include <QPainter>
#include <QLabel>
#include <QString>
#include "toonz/preferences.h"
#include "toonzqt/lutcalibrator.h"
#include "toonzqt/gutil.h"
#include "timagecache.h"
#include "trasterimage.h"
// TnzBase includes
#include "tenv.h"
#include <QPushButton>
#include <QDialog>
TEnv::IntVar HistogramChannelDisplayMode(
"HistogramChannelDisplayMode",
(int)ComboHistoRGBLabel::Display_8bit); // 8bit display by default
namespace {
inline int idx(int y, int x) { return y * COMBOHIST_RESOLUTION_W + x; }
} // namespace
//=============================================================================
// ChannelHistoGraph
//-----------------------------------------------------------------------------
ChannelHistoGraph::ChannelHistoGraph(int index, QWidget *parent,
bool *showComparePtr)
: QWidget(parent)
, m_showComparePtr(showComparePtr)
, m_channelIndex(index)
, m_pickedValue(-1) {
// width 256+2 pixels, height 100+2 pixels (with margin)
setFixedSize(COMBOHIST_RESOLUTION_W + 2, COMBOHIST_RESOLUTION_H + 2);
m_values[0].reserve(COMBOHIST_RESOLUTION_W);
m_values[1].reserve(COMBOHIST_RESOLUTION_W);
}
//-----------------------------------------------------------------------------
ChannelHistoGraph::~ChannelHistoGraph() {
m_values[0].clear();
m_values[1].clear();
}
//-----------------------------------------------------------------------------
void ChannelHistoGraph::setValues(int *buf, bool isComp) {
int id = (isComp) ? 1 : 0;
m_values[id].clear();
m_values[id].resize(COMBOHIST_RESOLUTION_W);
m_maxValue[id] = 1;
int i;
// normalize with the maximum value
int maxValue = 1;
for (i = 0; i < COMBOHIST_RESOLUTION_W; i++) {
m_values[id][i] = buf[i];
if (m_maxValue[id] < buf[i]) m_maxValue[id] = buf[i];
}
// for (i = 0; i < COMBOHIST_RESOLUTION_W; i++) {
// int v = buf[i];
// m_values[id][i] =
// tround((double)(v * COMBOHIST_RESOLUTION_H) / (double)maxValue);
//}
}
//-----------------------------------------------------------------------------
void ChannelHistoGraph::paintEvent(QPaintEvent *event) {
QPainter p(this);
p.setPen(QColor(144, 144, 144));
p.setBrush(QColor(214, 214, 214));
p.drawRect(rect().x(), rect().y(), rect().width() - 1, rect().height() - 1);
p.setBrush(Qt::NoBrush);
int i;
// draw scale marks
p.setPen(QColor(144, 144, 144));
for (i = 1; i < 10; i++) {
int posx = rect().width() * i / 10;
p.drawLine(posx, 1, posx, COMBOHIST_RESOLUTION_H);
}
QColor compColor = (m_channelIndex == 0) ? Qt::red
: (m_channelIndex == 1) ? Qt::green
: (m_channelIndex == 2) ? Qt::blue
: Qt::magenta;
compColor.setAlpha(120);
int maxValue = m_maxValue[0];
if (!m_values[1].isEmpty() && m_showComparePtr && *m_showComparePtr &&
m_maxValue[0] < m_maxValue[1])
maxValue = m_maxValue[1];
p.translate(0, COMBOHIST_RESOLUTION_H);
p.scale(1.0, -(double)COMBOHIST_RESOLUTION_H / (double)maxValue);
for (int id = 0; id < 2; id++) {
if (m_values[id].isEmpty()) continue;
if (id == 1 && (!m_showComparePtr || !(*m_showComparePtr))) continue;
p.setPen((id == 0) ? Qt::black : compColor);
// draw each histogram
for (i = 0; i < COMBOHIST_RESOLUTION_W; i++) {
int v = m_values[id][i];
if (v <= 0) continue;
int x = 1 + i;
p.drawLine(x, 0, x, v);
}
// draw picked color's channel value
if (m_pickedValue > -1) {
p.setPen(Qt::white);
int x = 1 + m_pickedValue;
p.drawLine(x, 1, x, maxValue);
}
}
}
//-----------------------------------------------------------------------------
void ChannelHistoGraph::showCurrentChannelValue(int val) {
m_pickedValue = val;
update();
}
//=============================================================================
// ChannelHistoGraph
//-----------------------------------------------------------------------------
RGBHistoGraph::RGBHistoGraph(int index, QWidget *parent)
: ChannelHistoGraph(index, parent) {
m_histoImg = QImage(COMBOHIST_RESOLUTION_W, COMBOHIST_RESOLUTION_H,
QImage::Format_ARGB32_Premultiplied);
}
//-----------------------------------------------------------------------------
RGBHistoGraph::~RGBHistoGraph() {
for (int i = 0; i < 3; i++) m_rgbValues[i].clear();
}
//-----------------------------------------------------------------------------
void RGBHistoGraph::setValues(int *buf, bool) {
for (int chan = 0; chan < 3; chan++) {
m_rgbValues[chan].clear();
m_rgbValues[chan].resize(COMBOHIST_RESOLUTION_W);
int i;
// normalize with the maximum value
int maxValue = 1;
for (i = 0; i < COMBOHIST_RESOLUTION_W; i++) {
int count = buf[COMBOHIST_RESOLUTION_W * chan + i];
if (maxValue < count) maxValue = count;
}
for (i = 0; i < COMBOHIST_RESOLUTION_W; i++) {
int v = buf[COMBOHIST_RESOLUTION_W * chan + i];
m_rgbValues[chan][i] =
tround((double)(v * COMBOHIST_RESOLUTION_H) / (double)maxValue);
}
}
QPainter imgPainter(&m_histoImg);
imgPainter.fillRect(m_histoImg.rect(), Qt::black);
if (m_rgbValues[0].size() == 0 || m_rgbValues[1].size() == 0 ||
m_rgbValues[2].size() == 0) {
imgPainter.end();
return;
}
imgPainter.setCompositionMode(QPainter::CompositionMode_Plus);
for (int chan = 0; chan < 3; chan++) {
imgPainter.setPen((chan == 0) ? Qt::red
: (chan == 1) ? Qt::green
: Qt::blue);
for (int i = 0; i < COMBOHIST_RESOLUTION_W; i++) {
int v = m_rgbValues[chan][i];
if (v <= 0) continue;
int x = 1 + i;
imgPainter.drawLine(x, COMBOHIST_RESOLUTION_H + 1 - v, x,
COMBOHIST_RESOLUTION_H);
}
}
imgPainter.setCompositionMode(QPainter::CompositionMode_SourceOver);
imgPainter.end();
}
//-----------------------------------------------------------------------------
void RGBHistoGraph::paintEvent(QPaintEvent *event) {
QPainter p(this);
p.setCompositionMode(QPainter::CompositionMode_SourceOver);
p.setPen(QColor(144, 144, 144));
p.setBrush(QColor(64, 64, 64));
p.drawRect(rect().x(), rect().y(), rect().width() - 1, rect().height() - 1);
p.setBrush(Qt::NoBrush);
p.drawImage(1, 1, m_histoImg);
}
//=============================================================================
// ChannelColorBar
//-----------------------------------------------------------------------------
ChannelColorBar::ChannelColorBar(QWidget *parent, QColor color)
: QWidget(parent), m_color(color) {
// 2 pixels margin for width
setFixedSize(COMBOHIST_RESOLUTION_W + 2, 6);
}
//-----------------------------------------------------------------------------
void ChannelColorBar::paintEvent(QPaintEvent *event) {
QPainter p(this);
QLinearGradient linearGrad(QPoint(1, 0), QPoint(COMBOHIST_RESOLUTION_W, 0));
if (m_color == QColor(0, 0, 0, 0)) {
linearGrad.setColorAt(0, m_color);
linearGrad.setColorAt(1, Qt::white);
} else {
linearGrad.setColorAt(0, Qt::black);
linearGrad.setColorAt(1, m_color);
}
p.setBrush(QBrush(linearGrad));
p.setPen(Qt::NoPen);
p.drawRect(rect());
}
//=============================================================================
// ChannelHisto
//-----------------------------------------------------------------------------
ChannelHisto::ChannelHisto(int channelIndex, bool *showComparePtr,
QWidget *parent) {
QString label;
QColor color;
switch (channelIndex) {
case 0:
label = tr("Red");
color = Qt::red;
break;
case 1:
label = tr("Green");
color = Qt::green;
break;
case 2:
label = tr("Blue");
color = Qt::blue;
break;
case 3:
label = tr("Alpha");
color = QColor(0, 0, 0, 0);
break;
case 4:
label = tr("RGB");
color = Qt::white;
break;
}
if (channelIndex != 4)
m_histogramGraph =
new ChannelHistoGraph(channelIndex, this, showComparePtr);
else
m_histogramGraph = new RGBHistoGraph(channelIndex, this);
m_colorBar = new ChannelColorBar(this, color);
// show/hide the alpha channel
QPushButton *showAlphaChannelButton = 0;
if (channelIndex == 3) {
showAlphaChannelButton = new QPushButton("", this);
showAlphaChannelButton->setObjectName("menuToggleButton");
showAlphaChannelButton->setFixedSize(15, 15);
showAlphaChannelButton->setIcon(createQIcon("menu_toggle"));
showAlphaChannelButton->setCheckable(true);
showAlphaChannelButton->setChecked(false);
showAlphaChannelButton->setFocusPolicy(Qt::NoFocus);
}
// layout
QVBoxLayout *mainLayout = new QVBoxLayout(this);
mainLayout->setMargin(0);
mainLayout->setSpacing(2);
{
QHBoxLayout *titleLay = new QHBoxLayout();
titleLay->setMargin(0);
titleLay->setSpacing(2);
{
titleLay->addWidget(new QLabel(label, this), 0);
if (channelIndex == 3) titleLay->addWidget(showAlphaChannelButton, 0);
titleLay->addStretch(1);
}
mainLayout->addLayout(titleLay);
mainLayout->addSpacing(3);
mainLayout->addWidget(m_histogramGraph);
mainLayout->addWidget(m_colorBar);
}
setLayout(mainLayout);
if (channelIndex == 3) {
connect(showAlphaChannelButton, SIGNAL(toggled(bool)), this,
SLOT(onShowAlphaButtonToggled(bool)));
onShowAlphaButtonToggled(false);
}
}
//-----------------------------------------------------------------------------
/*! update the picked color's channel value
*/
void ChannelHisto::showCurrentChannelValue(int val) {
m_histogramGraph->showCurrentChannelValue(val);
}
//-----------------------------------------------------------------------------
void ChannelHisto::onShowAlphaButtonToggled(bool visible) {
m_histogramGraph->setVisible(visible);
m_colorBar->setVisible(visible);
emit showButtonToggled(visible);
}
//=============================================================================
// ComboHistoRGBLabel
//-----------------------------------------------------------------------------
ComboHistoRGBLabel::ComboHistoRGBLabel(QColor color, QWidget *parent)
: QWidget(parent)
, m_color(color)
, m_mode(DisplayMode::Display_8bit)
, m_alphaVisible(false) {
setFixedSize(COMBOHIST_RESOLUTION_W, 35);
}
void ComboHistoRGBLabel::setColorAndUpdate(QColor color) {
if (m_color == color) return;
m_color = color;
update();
}
void ComboHistoRGBLabel::paintEvent(QPaintEvent *pe) {
QPainter p(this);
p.setPen(Qt::black);
QRect bgRect = QRect(rect().left(), rect().top(), rect().width() - 1,
rect().height() - 1);
if (m_color.alpha() == 0) {
p.setBrush(Qt::gray);
p.drawRect(bgRect);
return;
}
if (LutManager::instance()->isValid()) {
QColor convertedColor(m_color);
LutManager::instance()->convert(convertedColor);
p.setBrush(convertedColor);
} else
p.setBrush(m_color);
p.drawRect(bgRect);
// white text for dark color, black text for light color
int val = m_color.red() * 30 + m_color.green() * 59 + m_color.blue() * 11;
if (val < 12800)
p.setPen(Qt::white);
else
p.setPen(Qt::black);
p.setBrush(Qt::NoBrush);
QFont font = p.font();
const int pixelSizes[3] = {18, 14, 14};
font.setPixelSize(pixelSizes[(int)m_mode]);
p.setFont(font);
QString colorStr;
QString colorStr2 = QString();
switch (m_mode) {
case Display_8bit: {
colorStr = tr("R:%1 G:%2 B:%3")
.arg(m_color.red())
.arg(m_color.green())
.arg(m_color.blue());
if (m_alphaVisible) colorStr += tr(" A:%1").arg(m_color.alpha());
break;
}
case Display_16bit: {
QRgba64 rgba64 = m_color.rgba64();
colorStr = tr("R:%1 G:%2 B:%3")
.arg(rgba64.red())
.arg(rgba64.green())
.arg(rgba64.blue());
if (m_alphaVisible) colorStr += tr(" A:%1").arg(rgba64.alpha());
break;
}
case Display_0_1: {
if (!m_alphaVisible) {
colorStr = tr("R:%1 G:%2 B:%3")
.arg(m_color.redF())
.arg(m_color.greenF())
.arg(m_color.blueF());
} else {
// display in 2 lines
colorStr = tr("R:%1 G:%2 B:%3")
.arg(m_color.redF())
.arg(m_color.greenF())
.arg(m_color.blueF());
colorStr2 = tr("A:%1").arg(m_color.alphaF());
}
break;
}
}
if (colorStr2.isEmpty())
p.drawText(rect(), Qt::AlignCenter, colorStr);
else {
QRect upRect = rect().adjusted(0, 0, 0, -rect().height() / 2);
p.drawText(upRect, Qt::AlignCenter, colorStr);
QRect dnRect = upRect.translated(0, rect().height() / 2);
p.drawText(dnRect, Qt::AlignCenter, colorStr2);
}
}
//=============================================================================
// ComboHistogram
//-----------------------------------------------------------------------------
ComboHistogram::ComboHistogram(QWidget *parent)
: QWidget(parent)
, m_raster(0)
, m_palette(0)
, m_showCompare(false)
, m_compHistoIsValid(true) {
for (int chan = 0; chan < 4; chan++)
m_histograms[chan] = new ChannelHisto(chan, &m_showCompare, this);
m_histograms[4] = new ChannelHisto(4, &m_showCompare, this);
// RGB label
m_rgbLabel = new ComboHistoRGBLabel(QColor(128, 128, 128), this);
// m_rgbLabel->setStyleSheet("font-size: 18px;");
m_rectAverageRgbLabel = new ComboHistoRGBLabel(QColor(128, 128, 128), this);
// m_rectAverageRgbLabel->setStyleSheet("font-size: 18px;");
m_xPosLabel = new QLabel("", this);
m_yPosLabel = new QLabel("", this);
m_displayModeCombo = new QComboBox(this);
m_displayModeCombo->addItem(
tr("8bit (0-255)"), (int)ComboHistoRGBLabel::DisplayMode::Display_8bit);
m_displayModeCombo->addItem(
tr("16bit (0-65535)"),
(int)ComboHistoRGBLabel::DisplayMode::Display_16bit);
m_displayModeCombo->addItem(
tr("0.0-1.0"), (int)ComboHistoRGBLabel::DisplayMode::Display_0_1);
// layout
QVBoxLayout *mainLayout = new QVBoxLayout();
mainLayout->setMargin(5);
mainLayout->setSpacing(5);
{
mainLayout->addWidget(m_histograms[4]); // RGB
QHBoxLayout *labelLay = new QHBoxLayout();
labelLay->setMargin(0);
labelLay->setSpacing(0);
{
labelLay->addWidget(new QLabel(tr("Picked Color"), this), 0);
labelLay->addStretch(1);
labelLay->addWidget(m_displayModeCombo, 0);
}
mainLayout->addLayout(labelLay, 0);
mainLayout->addWidget(m_rgbLabel, 0, Qt::AlignCenter);
mainLayout->addWidget(new QLabel(tr("Average Color (Ctrl + Drag)"), this),
0, Qt::AlignLeft | Qt::AlignVCenter);
mainLayout->addWidget(m_rectAverageRgbLabel, 0, Qt::AlignCenter);
QHBoxLayout *infoParamLay = new QHBoxLayout();
infoParamLay->setMargin(5);
infoParamLay->setSpacing(3);
{
infoParamLay->addWidget(new QLabel(tr("X:"), this), 1,
Qt::AlignRight | Qt::AlignVCenter);
infoParamLay->addWidget(m_xPosLabel, 1, Qt::AlignLeft | Qt::AlignVCenter);
infoParamLay->addWidget(new QLabel(tr("Y:"), this), 1,
Qt::AlignRight | Qt::AlignVCenter);
infoParamLay->addWidget(m_yPosLabel, 2, Qt::AlignLeft | Qt::AlignVCenter);
}
mainLayout->addLayout(infoParamLay, 0);
mainLayout->addWidget(m_histograms[0]); // R
mainLayout->addWidget(m_histograms[1]); // G
mainLayout->addWidget(m_histograms[2]); // B
mainLayout->addWidget(m_histograms[3]); // A
mainLayout->addStretch(1);
}
setLayout(mainLayout);
m_rectAverageRgbLabel->setColorAndUpdate(Qt::transparent);
connect(m_displayModeCombo, SIGNAL(activated(int)), this,
SLOT(onDisplayModeChanged()));
connect(m_histograms[3], SIGNAL(showButtonToggled(bool)), this,
SLOT(onShowAlphaButtonToggled(bool)));
}
//-----------------------------------------------------------------------------
ComboHistogram::~ComboHistogram() {
memset(m_channelValue, 0, sizeof m_channelValue);
memset(m_channelValueComp, 0, sizeof m_channelValueComp);
}
//-----------------------------------------------------------------------------
void ComboHistogram::setRaster(const TRasterP &raster,
const TPaletteP &palette) {
if (palette.getPointer()) m_palette = palette;
m_raster = raster;
computeChannelsValue(&m_channelValue[0][0], sizeof(m_channelValue), m_raster);
for (int chan = 0; chan < 4; chan++)
m_histograms[chan]->refleshValue(&m_channelValue[chan][0]);
m_histograms[4]->refleshValue(&m_channelValue[0][0]);
update();
}
//-----------------------------------------------------------------------------
void ComboHistogram::computeChannelsValue(int *buf, size_t size, TRasterP ras,
TPalette *extPlt) {
memset(buf, 0, size);
if (!ras.getPointer()) return;
TRasterCM32P cmRaster = ras;
bool isCmRaster = !!cmRaster;
TRaster64P raster64 = ras;
bool is64bit = !!raster64;
int lx = ras->getLx();
int ly = ras->getLy();
if (lx > 1 && ly > 1) {
int i, j;
if (is64bit) {
for (j = 0; j < ly; j++) {
TPixel64 *pix_64 = raster64->pixels(j);
for (i = 0; i < lx; i++, pix_64++) {
int mValue = (int)byteFromUshort(pix_64->m);
if (mValue != 0) {
++buf[idx(0, (int)byteFromUshort(pix_64->r))];
++buf[idx(1, (int)byteFromUshort(pix_64->g))];
++buf[idx(2, (int)byteFromUshort(pix_64->b))];
}
++buf[idx(3, mValue)];
}
}
} else if (isCmRaster) {
TPalette *plt = (extPlt) ? extPlt : m_palette.getPointer();
assert(plt);
for (j = 0; j < ly; j++) {
TPixelCM32 *pix_cm = cmRaster->pixels(j);
for (i = 0; i < lx; i++, pix_cm++) {
int styleId =
pix_cm->getTone() < 127 ? pix_cm->getInk() : pix_cm->getPaint();
TColorStyle *colorStyle = plt->getStyle(styleId);
if (!colorStyle) continue;
TPixel color = colorStyle->getAverageColor();
int mValue = color.m;
if (mValue != 0) {
++buf[idx(0, color.r)];
++buf[idx(1, color.g)];
++buf[idx(2, color.b)];
}
++buf[idx(3, color.m)];
}
}
} else // 8bpc raster
{
for (j = 0; j < ly; j++) {
TPixel *pix = (TPixel *)ras->getRawData(0, j);
for (i = 0; i < lx; i++, pix++) {
int mValue = pix->m;
if (mValue != 0) {
++buf[idx(0, pix->r)];
++buf[idx(1, pix->g)];
++buf[idx(2, pix->b)];
}
++buf[idx(3, pix->m)];
}
}
}
}
}
//-----------------------------------------------------------------------------
void ComboHistogram::updateInfo(const TPixel32 &pix, const TPointD &imagePos) {
if (pix == TPixel32::Transparent) {
m_histograms[0]->showCurrentChannelValue(-1);
m_histograms[1]->showCurrentChannelValue(-1);
m_histograms[2]->showCurrentChannelValue(-1);
m_histograms[3]->showCurrentChannelValue(-1);
m_rgbLabel->setColorAndUpdate(Qt::transparent);
m_xPosLabel->setText("");
m_yPosLabel->setText("");
} else {
// show picked color's channel values
m_histograms[0]->showCurrentChannelValue((int)pix.r);
m_histograms[1]->showCurrentChannelValue((int)pix.g);
m_histograms[2]->showCurrentChannelValue((int)pix.b);
m_histograms[3]->showCurrentChannelValue((int)pix.m);
m_rgbLabel->setColorAndUpdate(
QColor((int)pix.r, (int)pix.g, (int)pix.b, (int)pix.m));
m_xPosLabel->setText(QString::number(tround(imagePos.x)));
m_yPosLabel->setText(QString::number(tround(imagePos.y)));
}
}
//-----------------------------------------------------------------------------
void ComboHistogram::updateInfo(const TPixel64 &pix, const TPointD &imagePos) {
if (pix == TPixel64::Transparent) {
m_histograms[0]->showCurrentChannelValue(-1);
m_histograms[1]->showCurrentChannelValue(-1);
m_histograms[2]->showCurrentChannelValue(-1);
m_histograms[3]->showCurrentChannelValue(-1);
m_rgbLabel->setColorAndUpdate(Qt::transparent);
m_xPosLabel->setText("");
m_yPosLabel->setText("");
} else {
TPixel32 pix32 = toPixel32(pix);
// show picked color's channel values
m_histograms[0]->showCurrentChannelValue((int)pix32.r);
m_histograms[1]->showCurrentChannelValue((int)pix32.g);
m_histograms[2]->showCurrentChannelValue((int)pix32.b);
m_histograms[3]->showCurrentChannelValue((int)pix32.m);
m_rgbLabel->setColorAndUpdate(QColor::fromRgba64(
(ushort)pix.r, (ushort)pix.g, (ushort)pix.b, (ushort)pix.m));
m_xPosLabel->setText(QString::number(tround(imagePos.x)));
m_yPosLabel->setText(QString::number(tround(imagePos.y)));
}
}
//-----------------------------------------------------------------------------
void ComboHistogram::updateAverageColor(const TPixel32 &pix) {
if (pix == TPixel32::Transparent) {
m_rectAverageRgbLabel->setColorAndUpdate(Qt::transparent);
} else {
m_rectAverageRgbLabel->setColorAndUpdate(
QColor((int)pix.r, (int)pix.g, (int)pix.b, (int)pix.m));
}
}
//-----------------------------------------------------------------------------
void ComboHistogram::updateAverageColor(const TPixel64 &pix) {
if (pix == TPixel64::Transparent) {
m_rectAverageRgbLabel->setColorAndUpdate(Qt::transparent);
} else {
m_rectAverageRgbLabel->setColorAndUpdate(QColor::fromRgba64(
(ushort)pix.r, (ushort)pix.g, (ushort)pix.b, (ushort)pix.m));
}
}
//-----------------------------------------------------------------------------
void ComboHistogram::onDisplayModeChanged() {
ComboHistoRGBLabel::DisplayMode mode =
static_cast<ComboHistoRGBLabel::DisplayMode>(
m_displayModeCombo->currentData().toInt());
m_rgbLabel->setDisplayMode(mode);
m_rectAverageRgbLabel->setDisplayMode(mode);
HistogramChannelDisplayMode = (int)mode;
update();
}
//-----------------------------------------------------------------------------
void ComboHistogram::updateCompHistogram() {
assert(!m_compHistoIsValid);
m_compHistoIsValid = true;
TImageP refimg =
TImageCache::instance()->get(QString("TnzCompareImg"), false);
if (!(TToonzImageP)refimg && !(TRasterImageP)refimg) return;
computeChannelsValue(&m_channelValueComp[0][0], sizeof m_channelValueComp,
refimg->raster(), refimg->getPalette());
for (int chan = 0; chan < 4; chan++)
m_histograms[chan]->refleshValue(&m_channelValueComp[chan][0], true);
}
//-----------------------------------------------------------------------------
void ComboHistogram::showEvent(QShowEvent *) {
if (!m_compHistoIsValid && m_showCompare) updateCompHistogram();
int envMode = HistogramChannelDisplayMode;
m_displayModeCombo->setCurrentIndex(m_displayModeCombo->findData(envMode));
ComboHistoRGBLabel::DisplayMode mode =
static_cast<ComboHistoRGBLabel::DisplayMode>(envMode);
m_rgbLabel->setDisplayMode(mode);
m_rectAverageRgbLabel->setDisplayMode(mode);
}
//-----------------------------------------------------------------------------
void ComboHistogram::onShowAlphaButtonToggled(bool alphaVisible) {
m_rgbLabel->setAlphaVisible(alphaVisible);
m_rectAverageRgbLabel->setAlphaVisible(alphaVisible);
m_rgbLabel->update();
m_rectAverageRgbLabel->update();
}