// Return ColourScalePoint corresponding to label under mouse (if any)
ColourScalePoint* TColourScaleEditor::labelUnderMouse(QPoint pos)
{
// Get the size of the textrect we need
QRect masterTextRect = style()->itemTextRect(fontMetrics(), QRect(), Qt::AlignRight | Qt::AlignVCenter, true, QString::number(-0.123456, 'e', 6));
int margin = masterTextRect.height()*0.5;
masterTextRect.setLeft(margin);
masterTextRect.setRight(width() - gradientBarWidth_ - 3*margin - handleRadius_*2);
// Draw text and line elements
if (colourScale_.nPoints() > 0)
{
double zero = colourScale_.firstPoint()->value();
double span = colourScale_.lastPoint()->value() - zero;
for (ColourScalePoint* csp = colourScale_.firstPoint(); csp != NULL; csp = csp->next)
{
int y = (1.0 - (csp->value() - zero) / span) * (height() - 2*margin) + margin;
QString numberText = QString::number(csp->value(), 'e', 6);
masterTextRect.moveBottom(y + 0.5*masterTextRect.height());
QRect textRect = style()->itemTextRect(fontMetrics(), masterTextRect, Qt::AlignRight | Qt::AlignVCenter, true, numberText);
if (textRect.contains(pos)) return csp;
}
}
return NULL;
}
// Paint event callback
void TColourScaleEditor::paintEvent(QPaintEvent *event)
{
QPainter painter(this);
// Get the size of the textrect we need
QRect masterTextRect = style()->itemTextRect(fontMetrics(), QRect(), Qt::AlignRight | Qt::AlignVCenter, true, QString::number(-0.123456, 'e', 6));
int margin = masterTextRect.height()*0.5;
masterTextRect.setLeft(margin);
masterTextRect.setRight(width() - gradientBarWidth_ - 3*margin - handleRadius_*2);
// Set up the basic handle style option
QStyleOption handleOption;
handleOption.rect.setRight(width()-margin);
handleOption.rect.setLeft(width()-margin-handleRadius_*2);
handleOption.rect.setHeight(masterTextRect.height());
// Draw gradient bar
QBrush brush(gradient_);
QPen pen(Qt::black);
QRect gradientRect;
gradientRect.setHeight(height()-2*margin);
gradientRect.setWidth(gradientBarWidth_);
gradientRect.moveTop(margin);
gradientRect.moveRight(width() - 2*margin - handleRadius_*2);
painter.setBrush(brush);
painter.setPen(pen);
painter.drawRect(gradientRect);
// Define regions
gradientBarRegion_ = QRegion(gradientRect);
// -- Handle and label region spans top to bottom of the widget (i.e. excluding margins)
handleRegion_ = QRegion(QRect(width() - margin - 2*handleRadius_, 0, 2*handleRadius_, height()));
labelRegion_ = QRegion(QRect(0, 0, width() - gradientRect.right() - margin, height()));
// Draw text and line elements
if (colourScale_.nPoints() > 0)
{
double zero = colourScale_.firstPoint()->value();
double span = colourScale_.lastPoint()->value() - zero;
for (ColourScalePoint* csp = colourScale_.firstPoint(); csp != NULL; csp = csp->next)
{
int y = (1.0 - (csp->value() - zero) / span) * (height() - 2*margin) + margin;
QString numberText = QString::number(csp->value(), 'e', 6);
masterTextRect.moveBottom(y + 0.5*masterTextRect.height());
painter.setPen(palette().text().color());
style()->drawItemText(&painter, masterTextRect, Qt::AlignRight | Qt::AlignVCenter, palette(), true, numberText);
painter.drawLine(gradientRect.left()-margin, y, gradientRect.right()+margin, y);
// Draw handle for this point
handleOption.rect.moveBottom(y + 0.5*masterTextRect.height());
if (csp == currentColourScalePoint_) handleOption.state = QStyle::State_Enabled;
else if (csp == hoverColourScalePoint_) handleOption.state = QStyle::State_MouseOver;
else handleOption.state = 0;
drawHandle(handleOption, painter);
}
}
painter.end();
}
// Get colour associated with value supplied (as Vec4<GLfloat>)
void ColourScale::colour(double value, Vec4<GLfloat>& target) const
{
// Step through points associated to scale and find the two that we are inbetween.
// Check for no points being defined
if (points_.nItems() == 0)
{
target.x = 0.0;
target.y = 0.0;
target.z = 0.0;
target.w = 1.0;
return;
}
ColourScalePoint* csp = points_.first();
// Is supplied value less than the value at the first point?
if (value < csp->value())
{
csp->colour(target);
return;
}
// Find the correct delta to use
for (ColourScaleDelta* delta = deltas_.first(); delta != NULL; delta = delta->next)
{
if (delta->containsValue(value))
{
delta->colour(interpolated_ ? value : delta->start(), useHSV_, target);
return;
}
}
// If we get to here then the supplied value is outside the range of all values, so take colour from the endpoint
//printf("OUTSIDE RANGE\n");
points_.last()->colour(target);
}
// Return colour associated with value provided
void ColourScale::colour(double v, GLfloat* target)
{
// Step through points associated to scale and find the two that we are inbetween.
// Check for no points being defined
if (points_.nItems() == 0)
{
target[0] = (GLfloat) 0.0;
target[1] = (GLfloat) 0.0;
target[2] = (GLfloat) 0.0;
target[3] = (GLfloat) 0.0;
return;
}
ColourScalePoint* csp = points_.first();
// Is supplied value less than the value at the first point?
if (v < csp->value())
{
csp->copyColour(target);
return;
}
// Find the correct delta to use
for (ColourScaleDelta* delta = deltas_.first(); delta != NULL; delta = delta->next)
{
if (delta->containsValue(v))
{
delta->colour( interpolated_ ? v : delta->start(), target);
return;
}
}
// If we get to here then the supplied value is outside the range of all values, so take colour from the endpoint
points_.last()->copyColour(target);
}
void TColourScaleEditor::contextMenuRequested(const QPoint& point)
{
// Get handle at clicked point
ColourScalePoint* clickedPoint = handleUnderMouse(point);
if (!clickedPoint) return;
// Build the context menu to display
QMenu contextMenu;
QAction* valueAction = contextMenu.addAction("&Set value...");
QAction* deleteAction = contextMenu.addAction("&Delete");
QAction* spaceAction = contextMenu.addAction("&Set to midpoint");
if ((!clickedPoint->prev) || (!clickedPoint->next)) spaceAction->setEnabled(false);
// Show it
QPoint menuPosition = mapToGlobal(point);
QAction* menuResult = contextMenu.exec(menuPosition);
// What was clicked?
if (menuResult == valueAction)
{
bool ok;
double newValue = QInputDialog::getDouble(this, "Set point value", "New value: ", clickedPoint->value(), -1.0e7, 1.0e7, 6, &ok);
if (ok)
{
colourScale_.setValue(clickedPoint, newValue);
updateGradient();
repaint();
emit(colourScaleChanged());
}
}
else if (menuResult == deleteAction)
{
colourScale_.removePoint(clickedPoint);
updateGradient();
repaint();
emit(colourScaleChanged());
}
else if (menuResult == spaceAction)
{
// Get average values of next and previous points
double averageValue = (clickedPoint->next->value() + clickedPoint->prev->value()) * 0.5;
colourScale_.setValue(clickedPoint, averageValue);
updateGradient();
repaint();
emit(colourScaleChanged());
}
}
// Set colour and value data for point
void ColourScale::setPoint(int position, double value, QColor colour, bool setval, bool setcol)
{
// Check position supplied
if ((position < 0) || (position >= points_.nItems()))
{
printf("Scale point position to set (%i) is invalid - nItems = %i.\n", position, points_.nItems());
return;
}
if (setcol) points_[position]->setColour(colour);
if (setval)
{
points_[position]->setValue(value);
// Position in list may have changed - check...
bool minBad = true, maxBad = true;
ColourScalePoint* csp = points_[position];
int dummy = 0;
do
{
// printf("BEFORE SHIFT Prev = %f, current= %f, next = %f\n", csp->prev ? csp->prev->value() : -999, csp->value(), csp->next ? csp->next->value() : -999);
// Shift item if necessary
if (csp->prev && (csp->prev->value() > csp->value()))
{
points_.shiftUp(csp);
minBad = (csp->prev ? (csp->prev->value() > csp->value()) : false);
}
else minBad = false;
if (csp->next && (csp->next->value() < csp->value()))
{
points_.shiftDown(csp);
maxBad = (csp->next ? (csp->next->value() < csp->value()) : false);
}
else maxBad = false;
// printf("AFTER SHIFT %i Prev = %f, current= %f, next = %f B=%i %i\n", dummy, csp->prev ? csp->prev->value() : -999, csp->value(), csp->next ? csp->next->value() : -999, minBad, maxBad);
if (++dummy == 10) break;
} while (minBad || maxBad);
}
// Recalculate colour deltas
calculateDeltas();
}
// Return colour associated with value provided
QColor ColourScale::colour(double value) const
{
// Step through points associated to scale and find the two that we are inbetween.
// Check for no points being defined
if (points_.nItems() == 0) return QColor(0,0,0);
ColourScalePoint* csp = points_.first();
// Is supplied value less than the value at the first point?
if (value < csp->value()) return csp->colour();
// Find the correct delta to use
for (ColourScaleDelta* delta = deltas_.first(); delta != NULL; delta = delta->next)
{
if (delta->containsValue(value)) return delta->colour(interpolated_ ? value : delta->start(), useHSV_);
}
// If we get to here then the supplied value is outside the range of all values, so take colour from the endpoint
return points_.last()->colour();
}
// Add point to scale
ColourScalePoint* ColourScale::addPoint(double value, double r, double g, double b, double a)
{
Messenger::enter("ColourScale::addPoint");
// Find position to insert new point at
ColourScalePoint* newPoint = NULL;
if (points_.nItems() == 0) newPoint = points_.add();
else if (value < points_.first()->value()) newPoint = points_.prepend();
else if (value > points_.last()->value()) newPoint = points_.add();
else
{
for (ColourScalePoint* point = points_.first()->next; point != NULL; point = point->next)
{
if (value < point->value())
{
newPoint = points_.insertBefore(point);
break;
}
}
}
// Double-check we have a new point
if (!newPoint)
{
printf("Internal Error: ColourScale::addPoint() failed to add a point.\n");
return NULL;
}
// Now, set data in new point
newPoint->setParent(this);
newPoint->setColour(r, g, b, a);
newPoint->setValue(value);
// Recalculate colour deltas
calculateDeltas();
// Refresh linked objects
refreshObjects();
Messenger::exit("ColourScale::addPoint");
return newPoint;
}
// Return ColourScalePoint corresponding to handle under mouse (if any)
ColourScalePoint* TColourScaleEditor::handleUnderMouse(QPoint pos)
{
// Did we hit a handle?
if (colourScale_.nPoints() > 0)
{
// Check x delta first
if (abs(lastPos_.x() - handleRegion_.boundingRect().center().x()) > handleRadius_) return NULL;
// Check distance from centre of handles...
double zero = colourScale_.firstPoint()->value();
double span = colourScale_.lastPoint()->value() - zero;
for (ColourScalePoint* csp = colourScale_.firstPoint(); csp != NULL; csp = csp->next)
{
// Work out fractional position of colourscale value and get centre coordinates of handle
double fracy = (1.0 - (csp->value() - zero) / span);
int y = fracy * gradientBarRegion_.boundingRect().height() + gradientBarRegion_.boundingRect().top();
if (abs(y - pos.y()) <= handleRadius_) return csp;
}
}
return NULL;
}
// Update QGradient for display
void TColourScaleEditor::updateGradient()
{
// Setup QGradient - in ObjectBoundingMode, 0.0 = top of rectangle, and 1.0 is bottom
gradient_ = QLinearGradient(0.0, 1.0, 0.0, 0.0);
gradient_.setCoordinateMode(QGradient::ObjectBoundingMode);
// Add points
if (colourScale_.nPoints() == 0)
{
gradient_.setColorAt(0.0, QColor(0,0,0));
gradient_.setColorAt(1.0, QColor(0,0,0));
}
else if (colourScale_.nPoints() == 1)
{
gradient_.setColorAt(0.0, colourScale_.firstPoint()->colourAsQColor());
gradient_.setColorAt(1.0, colourScale_.firstPoint()->colourAsQColor());
}
else
{
double zero = colourScale_.firstPoint()->value();
double span = colourScale_.lastPoint()->value() - zero;
for (ColourScalePoint* csp = colourScale_.firstPoint(); csp != NULL; csp = csp->next) gradient_.setColorAt((csp->value() - zero) / span, csp->colourAsQColor());
}
}
// Add point to scale
ColourScalePoint* ColourScale::addPoint(double value, QColor colour)
{
ColourScalePoint* csp = NULL;
// If supplied value is less than that at the start of the list, add it at the beginning.
// If larget than the one at the end, then append it to the end of the list.
// If neither of these, find the first existing value which is larger, and add it before that one
if (points_.nItems() == 0) csp = points_.add();
else if (value > points_.last()->value()) csp = points_.add();
else for (ColourScalePoint* oldPoint = points_.first(); oldPoint != NULL; oldPoint = oldPoint->next) if (oldPoint->value() > value)
{
csp = points_.insertBefore(oldPoint);
break;
}
if (csp == NULL) return NULL;
// Now, set data in new point
csp->setColour(colour);
csp->setValue(value);
// Recalculate colour deltas
calculateDeltas();
return csp;
}
// Assignment operator
void ColourScale::operator=(const ColourScale& source)
{
clear();
useHSV_ = source.useHSV_;
for (ColourScalePoint* csp = source.points_.first(); csp != NULL; csp = csp->next) addPoint( csp->value(), csp->colour() );
interpolated_ = source.interpolated_;
}
// Write CollectionBlock keywords
bool UChromaSession::writeCollectionBlock(LineParser& parser, Collection* collection, Collection::CollectionType type, int indentLevel)
{
// Construct indent string
char* indent = new char[indentLevel*2+1];
for (int n=0; n<indentLevel*2; ++n) indent[n] = ' ';
indent[indentLevel*2] = '\0';
if (type == Collection::MasterCollection) parser.writeLineF("%s%s '%s'\n", indent, UChromaSession::inputBlock(UChromaSession::CollectionBlock), qPrintable(collection->name()));
else if (type == Collection::FitCollection) parser.writeLineF("%s%s '%s'\n", indent, UChromaSession::collectionKeyword(UChromaSession::FitBlockKeyword), qPrintable(collection->name()));
else if (type == Collection::ExtractedCollection) parser.writeLineF("%s%s '%s'\n", indent, UChromaSession::collectionKeyword(UChromaSession::SliceBlockKeyword), qPrintable(collection->name()));
parser.writeLineF("%s %s \"%s\"\n", indent, UChromaSession::collectionKeyword(UChromaSession::DataDirectoryKeyword), qPrintable(collection->dataFileDirectory().absolutePath()));
// -- Transforms
parser.writeLineF("%s %s %s %s\n", indent, UChromaSession::collectionKeyword(UChromaSession::TransformXKeyword), stringBool(collection->transformEnabled(0)), qPrintable(collection->transformEquation(0)));
parser.writeLineF("%s %s %s %s\n", indent, UChromaSession::collectionKeyword(UChromaSession::TransformYKeyword), stringBool(collection->transformEnabled(1)), qPrintable(collection->transformEquation(1)));
parser.writeLineF("%s %s %s %s\n", indent, UChromaSession::collectionKeyword(UChromaSession::TransformZKeyword), stringBool(collection->transformEnabled(2)), qPrintable(collection->transformEquation(2)));
// -- Interpolation
parser.writeLineF("%s %s %s %s\n", indent, UChromaSession::collectionKeyword(UChromaSession::InterpolateKeyword), stringBool(collection->interpolate(0)), stringBool(collection->interpolate(2)));
parser.writeLineF("%s %s %s %s\n", indent, UChromaSession::collectionKeyword(UChromaSession::InterpolateConstrainKeyword), stringBool(collection->interpolateConstrained(0)), stringBool(collection->interpolateConstrained(2)));
parser.writeLineF("%s %s %f %f\n", indent, UChromaSession::collectionKeyword(UChromaSession::InterpolateStepKeyword), collection->interpolationStep(0), collection->interpolationStep(2));
// Colour Setup
parser.writeLineF("%s %s '%s'\n", indent, UChromaSession::collectionKeyword(UChromaSession::ColourSourceKeyword), Collection::colourSource(collection->colourSource()));
ColourScalePoint* csp;
QColor colour;
double value;
// -- Single Colour
colour = collection->colourScalePointColour(Collection::SingleColourSource);
parser.writeLineF("%s %s %i %i %i %i\n", indent, UChromaSession::collectionKeyword(UChromaSession::ColourSingleKeyword), colour.red(), colour.green(), colour.blue(), colour.alpha());
// -- RGB Gradient
colour = collection->colourScalePointColour(Collection::RGBGradientSource, 0);
value = collection->colourScalePointValue(Collection::RGBGradientSource, 0);
parser.writeLineF("%s %s %f %i %i %i %i\n", indent, UChromaSession::collectionKeyword(UChromaSession::ColourRGBGradientAKeyword), value, colour.red(), colour.green(), colour.blue(), colour.alpha());
colour = collection->colourScalePointColour(Collection::RGBGradientSource, 1);
value = collection->colourScalePointValue(Collection::RGBGradientSource, 1);
parser.writeLineF("%s %s %f %i %i %i %i\n", indent, UChromaSession::collectionKeyword(UChromaSession::ColourRGBGradientBKeyword), value, colour.red(), colour.green(), colour.blue(), colour.alpha());
// -- HSV Gradient
colour = collection->colourScalePointColour(Collection::HSVGradientSource, 0);
value = collection->colourScalePointValue(Collection::HSVGradientSource, 0);
parser.writeLineF("%s %s %f %i %i %i %i\n", indent, UChromaSession::collectionKeyword(UChromaSession::ColourHSVGradientAKeyword), value, colour.hue(), colour.saturation(), colour.value(), colour.alpha());
colour = collection->colourScalePointColour(Collection::HSVGradientSource, 1);
value = collection->colourScalePointValue(Collection::HSVGradientSource, 1);
parser.writeLineF("%s %s %f %i %i %i %i\n", indent, UChromaSession::collectionKeyword(UChromaSession::ColourHSVGradientBKeyword), value, colour.hue(), colour.saturation(), colour.value(), colour.alpha());
// -- Custom Gradient
for (csp = collection->customColourScalePoints(); csp != NULL; csp = csp->next)
{
parser.writeLineF("%s %s %f %i %i %i %i\n", indent, UChromaSession::collectionKeyword(UChromaSession::ColourCustomGradientKeyword), csp->value(), csp->colour().red(), csp->colour().green(), csp->colour().blue(), csp->colour().alpha());
}
// -- Alpha control
parser.writeLineF("%s %s '%s'\n", indent, UChromaSession::collectionKeyword(UChromaSession::ColourAlphaControlKeyword), Collection::alphaControl(collection->alphaControl()));
parser.writeLineF("%s %s %f\n", indent, UChromaSession::collectionKeyword(UChromaSession::ColourAlphaFixedKeyword), collection->fixedAlpha());
// Display
parser.writeLineF("%s %s %f '%s'\n", indent, UChromaSession::collectionKeyword(UChromaSession::LineStyleKeyword), collection->displayLineStyle().width(), LineStipple::stipple[collection->displayLineStyle().stipple()].name);
parser.writeLineF("%s %s %f\n", indent, UChromaSession::collectionKeyword(UChromaSession::ShininessKeyword), collection->displaySurfaceShininess());
parser.writeLineF("%s %s %s\n", indent, UChromaSession::collectionKeyword(UChromaSession::StyleKeyword), Collection::displayStyle(collection->displayStyle()));
parser.writeLineF("%s %s %s\n", indent, UChromaSession::collectionKeyword(UChromaSession::VisibleCollectionKeyword), stringBool(collection->visible()));
// Loop over datasets
for (DataSet* dataSet = collection->dataSets(); dataSet != NULL; dataSet = dataSet->next) writeDataSetBlock(parser, dataSet, indentLevel);
// Write FitKernel data if present
if (collection->fitKernel()) writeFitParametersBlock(parser, collection->fitKernel(), indentLevel);
// Additional data
// -- Fits
for (Collection* fit = collection->fits(); fit != NULL; fit = fit->next) writeCollectionBlock(parser, fit, Collection::FitCollection, indentLevel+1);
// -- Extracted Data
for (Collection* extract = collection->slices(); extract != NULL; extract = extract->next) writeCollectionBlock(parser, extract, Collection::ExtractedCollection, indentLevel+1);
parser.writeLineF("%s%s\n", indent, UChromaSession::collectionKeyword(UChromaSession::EndCollectionKeyword));
return true;
}