paysages3d/gui_qt/previewcolorgradation.cpp

#include "previewcolorgradation.h"

#include <QVBoxLayout>
#include <QImage>
#include <QLabel>
#include <QColor>
#include <QPainter>
#include <QSlider>
#include <QScrollArea>
#include <QPushButton>
#include "baseform.h"
#include "tools.h"
#include "widgetcurveeditor.h"

/**************** Preview ****************/
PreviewColorGradation::PreviewColorGradation(QWidget* parent, ColorGradation* gradation, EnumColorGradationBand band) : QWidget(parent)
{
    this->gradation = gradation;
    this->band = band;
}
    
void PreviewColorGradation::paintEvent(QPaintEvent* event)
{
    Curve* curve;

    QPainter painter(this);
    int width = this->width();
    int height = this->height();

    curve = curveCreate();

    switch (band)
    {
        case COLORGRADATIONBAND_RED:
            colorGradationGetRedCurve(gradation, curve);
            break;
        case COLORGRADATIONBAND_GREEN:
            colorGradationGetGreenCurve(gradation, curve);
            break;
        case COLORGRADATIONBAND_BLUE:
            colorGradationGetBlueCurve(gradation, curve);
            break;
        default:
            break;
    }

    for (int x = 0; x < width; x++)
    {
        switch (band)
        {
            case COLORGRADATIONBAND_RED:
                painter.setPen(QColor::fromRgbF(curveGetValue(curve, (float)x / (float)width), 0.0, 0.0));
                break;
            case COLORGRADATIONBAND_GREEN:
                painter.setPen(QColor::fromRgbF(0.0, curveGetValue(curve, (float)x / (float)width), 0.0));
                break;
            case COLORGRADATIONBAND_BLUE:
                painter.setPen(QColor::fromRgbF(0.0, 0.0, curveGetValue(curve, (float)x / (float)width)));
                break;
            case COLORGRADATIONBAND_FINAL:
                painter.setPen(colorToQColor(colorGradationGet(gradation, (float)x / (float)width)));
                break;
        }
        painter.drawLine(x, 0, x, height - 1);
    }

    curveDelete(curve);
}

void PreviewColorGradation::mouseReleaseEvent(QMouseEvent* event)
{
    emit clicked();
}