示例#1
0
void QgsColorBox::setColor( const QColor &color, const bool emitSignals )
{
  //check if we need to redraw the box image
  if ( mComponent == QgsColorWidget::Red && mCurrentColor.red() != color.red() )
  {
    mDirty = true;
  }
  else if ( mComponent == QgsColorWidget::Green && mCurrentColor.green() != color.green() )
  {
    mDirty = true;
  }
  else if ( mComponent == QgsColorWidget::Blue && mCurrentColor.blue() != color.blue() )
  {
    mDirty = true;
  }
  else if ( mComponent == QgsColorWidget::Hue && color.hsvHue() >= 0 && hue() != color.hsvHue() )
  {
    mDirty = true;
  }
  else if ( mComponent == QgsColorWidget::Saturation && mCurrentColor.hsvSaturation() != color.hsvSaturation() )
  {
    mDirty = true;
  }
  else if ( mComponent == QgsColorWidget::Value && mCurrentColor.value() != color.value() )
  {
    mDirty = true;
  }
  QgsColorWidget::setColor( color, emitSignals );
}
示例#2
0
void ColorHistogram(double* result, int d1, int d2, int d3, QString filename)
{
    int i, j;
    QImage image;
    QRgb rgb;
    QColor color;
    for (i = 0; i < d1 * d2 * d3; i++)
        result[i] = 0;
    image.load(filename);
    for (i = 0; i < image.width(); i++)
        for (j = 0; j < image.height(); j++)
        {
            rgb = image.pixel(i, j);
            color = QColor::fromRgba(rgb);
            result[color.hsvHue() / (360 / d1) * d2 * d3 + color.hsvSaturation() / (256 / d2) * d3 + color.value() / (256 / d3)]++;
        }
    for (i = 1; i < d1 * d2 * d3; i++)
        result[i] += result[i - 1];
}
QString colorToString(const QColor &color, ColorFormat format)
{
    QString ret;

    QString prefix;
    QString colorComponents;

    if (format == ColorFormat::QCssRgbUCharFormat) {
        prefix = QLatin1String("rgb(");
        colorComponents = QString::number(color.red()) + QLatin1String(", ")
                + QString::number(color.green()) + QLatin1String(", ")
                + QString::number(color.blue());

        qreal alpha = color.alphaF();
        if (alpha < 1.0) {
            prefix.insert(3, QLatin1Char('a'));
            colorComponents += QLatin1String(", ") + colorDoubleToQString(color.alphaF());
        }
    }
    if (format == ColorFormat::QCssRgbPercentFormat) {
        int rP = qRound(color.redF() * 100);
        int gP = qRound(color.greenF() * 100);
        int bP = qRound(color.blueF() * 100);

        prefix = QLatin1String("rgb(");
        colorComponents = QString::number(rP) + QChar::fromLatin1('%') + QLatin1String(", ")
                + QString::number(gP) + QChar::fromLatin1('%') + QLatin1String(", ")
                + QString::number(bP) + QChar::fromLatin1('%');

        qreal alpha = color.alphaF();

        if (alpha < 1.0) {
            prefix.insert(3, QLatin1Char('a'));
            colorComponents += QLatin1String(", ") + colorDoubleToQString(alpha);
        }
    }
    else if (format == ColorFormat::QssHsvFormat) {
        prefix = QLatin1String("hsv(");
        colorComponents = QString::number(color.hsvHue()) + QLatin1String(", ")
                + QString::number(color.hsvSaturation()) + QLatin1String(", ")
                + QString::number(color.value());

        int aP = qRound(color.alphaF() * 100);

        if (aP < 100) {
            prefix.insert(3, QLatin1Char('a'));
            colorComponents += QLatin1String(", ") + colorDoubleToQString(aP);
        }
    }
    else if (format == ColorFormat::CssHslFormat) {
        prefix = QLatin1String("hsl(");

        int sP = qRound(color.hslSaturationF() * 100);
        int lP = qRound(color.lightnessF() * 100);

        colorComponents = QString::number(color.hslHue()) + QLatin1String(", ")
                + QString::number(sP) + QChar::fromLatin1('%') + QLatin1String(", ")
                + QString::number(lP) + QChar::fromLatin1('%');

        qreal alpha = color.alphaF();
        if (alpha < 1.0) {
            prefix.insert(3, QLatin1Char('a'));
            colorComponents += QLatin1String(", ") + colorDoubleToQString(color.alphaF());
        }
    }
    else if (format == ColorFormat::QmlRgbaFormat) {
        prefix = QLatin1String("Qt.rgba(");
        colorComponents = colorDoubleToQString(color.redF()) + QLatin1String(", ")
                + colorDoubleToQString(color.greenF()) + QLatin1String(", ")
                + colorDoubleToQString(color.blueF()) + QLatin1String(", ")
                + colorDoubleToQString(color.alphaF());
    }
    else if (format == ColorFormat::QmlHslaFormat) {
        prefix = QLatin1String("Qt.hsla(");
        colorComponents = colorDoubleToQString(color.hueF()) + QLatin1String(", ")
                + colorDoubleToQString(color.saturationF()) + QLatin1String(", ")
                + colorDoubleToQString(color.lightnessF()) + QLatin1String(", ")
                + colorDoubleToQString(color.alphaF());
    }
    else if (format == ColorFormat::GlslFormat) {
        prefix = QLatin1String("vec");

        colorComponents = colorDoubleToQString(color.redF()) + QLatin1String(", ")
                + colorDoubleToQString(color.greenF()) + QLatin1String(", ")
                + colorDoubleToQString(color.blueF());

        qreal alpha = color.alphaF();
        if (alpha < 1.0) {
            prefix.append(QLatin1Char('4'));
            colorComponents += QLatin1String(", ") + colorDoubleToQString(color.alphaF());
        } else {
            prefix.append(QLatin1Char('3'));
        }

        prefix.append(QLatin1Char('('));
    }
    else if (format == ColorFormat::HexFormat) {
        prefix = QLatin1String("#");

        int alpha = color.alpha();

        if (alpha < 255)
            colorComponents.sprintf("%02x%02x%02x%02x", alpha, color.red(), color.green(), color.blue());
        else
            colorComponents.sprintf("%02x%02x%02x", color.red(), color.green(), color.blue());

        colorComponents = colorComponents.toUpper();
    }

    Q_ASSERT(!prefix.isNull());
    Q_ASSERT(!colorComponents.isNull());

    ret = prefix + colorComponents;

    if (format != ColorFormat::HexFormat)
        ret += QChar::fromLatin1(')');

    Q_ASSERT_X(!ret.isNull(), Q_FUNC_INFO, "The string version of the color is invalid");

    return ret;
}
示例#4
0
void ColorInspector::setColor(QColor newColor)
{
    // this is a UI update function, never emit any signals
    // grab the color from color manager, and then update itself, that's it.

    // compare under the same color spec
    newColor = (isRgbColors) ? newColor.toRgb() : newColor.toHsv();

    if (newColor == mCurrentColor)
    {
        return;
    }

    if(isRgbColors)
    {
        QSignalBlocker b1(ui->red_slider); 
        QSignalBlocker b2(ui->green_slider);
        QSignalBlocker b3(ui->blue_slider);
        QSignalBlocker b4(ui->alpha_slider);

        ui->red_slider->setRgb(newColor);
        ui->green_slider->setRgb(newColor);
        ui->blue_slider->setRgb(newColor);
        ui->alpha_slider->setRgb(newColor);

        QSignalBlocker b5(ui->RedspinBox);
        QSignalBlocker b6(ui->GreenspinBox);
        QSignalBlocker b7(ui->BluespinBox);
        QSignalBlocker b8(ui->AlphaspinBox);

        ui->RedspinBox->setValue(newColor.red());
        ui->GreenspinBox->setValue(newColor.green());
        ui->BluespinBox->setValue(newColor.blue());
        ui->AlphaspinBox->setValue(newColor.alpha());
    }
    else
    {
        QSignalBlocker b1(ui->red_slider);
        QSignalBlocker b2(ui->green_slider);
        QSignalBlocker b3(ui->blue_slider);
        QSignalBlocker b4(ui->alpha_slider);

        ui->red_slider->setHsv(newColor);
        ui->green_slider->setHsv(newColor);
        ui->blue_slider->setHsv(newColor);
        ui->alpha_slider->setHsv(newColor);

        QSignalBlocker b5(ui->RedspinBox);
        QSignalBlocker b6(ui->GreenspinBox);
        QSignalBlocker b7(ui->BluespinBox);
        QSignalBlocker b8(ui->AlphaspinBox);

        ui->RedspinBox->setValue(newColor.hsvHue());
        ui->GreenspinBox->setValue(qRound(newColor.hsvSaturation() / 2.55));
        ui->BluespinBox->setValue(qRound(newColor.value() / 2.55));
        ui->AlphaspinBox->setValue(qRound(newColor.alpha() / 2.55));
    }

    mCurrentColor = newColor;

    QPalette p1 = ui->colorWrapper->palette(), p2 = ui->color->palette();
    p1.setBrush(QPalette::Background, QBrush(QImage(":/background/checkerboard.png")));
    p2.setColor(QPalette::Background, mCurrentColor);
    ui->colorWrapper->setPalette(p1);
    ui->color->setPalette(p2);

    update();
}
示例#5
0
ColorVector MoodbarRenderer::Colors(const QByteArray& data, MoodbarStyle style,
                                    const QPalette& palette) {
  const int samples = data.size() / 3;

  // Set some parameters based on the moodbar style
  StyleProperties properties;
  switch (style) {
    case Style_Angry:
      properties = StyleProperties(samples / 360 * 9, 45, -45, 200, 100);
      break;
    case Style_Frozen:
      properties = StyleProperties(samples / 360 * 1, 140, 160, 50, 100);
      break;
    case Style_Happy:
      properties = StyleProperties(samples / 360 * 2, 0, 359, 150, 250);
      break;
    case Style_Normal:
      properties = StyleProperties(samples / 360 * 3, 0, 359, 100, 100);
      break;
    case Style_SystemPalette:
    default: {
      const QColor highlight_color(
          palette.color(QPalette::Active, QPalette::Highlight));

      properties.threshold_ = samples / 360 * 3;
      properties.range_start_ = (highlight_color.hsvHue() - 20 + 360) % 360;
      properties.range_delta_ = 20;
      properties.sat_ = highlight_color.hsvSaturation();
      properties.val_ = highlight_color.value() / 2;
    }
  }

  const unsigned char* data_p =
      reinterpret_cast<const unsigned char*>(data.constData());

  int hue_distribution[360];
  int total = 0;

  memset(hue_distribution, 0, arraysize(hue_distribution));

  ColorVector colors;

  // Read the colors, keeping track of some histograms
  for (int i = 0; i < samples; ++i) {
    QColor color;
    color.setRed(int(*data_p++));
    color.setGreen(int(*data_p++));
    color.setBlue(int(*data_p++));

    colors << color;

    const int hue = qMax(0, color.hue());
    if (hue_distribution[hue]++ == properties.threshold_) {
      total++;
    }
  }

  total = qMax(total, 1);

  // Remap the hue values to be between rangeStart and
  // rangeStart + rangeDelta.  Every time we see an input hue
  // above the threshold, increment the output hue by
  // (1/total) * rangeDelta.
  for (int i = 0, n = 0; i < 360; i++) {
    hue_distribution[i] =
        ((hue_distribution[i] > properties.threshold_ ? n++ : n) *
             properties.range_delta_ / total +
         properties.range_start_) %
        360;
  }

  // Now huedist is a hue mapper: huedist[h] is the new hue value
  // for a bar with hue h
  for (ColorVector::iterator it = colors.begin(); it != colors.end(); ++it) {
    const int hue = qMax(0, it->hue());

    *it = QColor::fromHsv(
        qBound(0, hue_distribution[hue], 359),
        qBound(0, it->saturation() * properties.sat_ / 100, 255),
        qBound(0, it->value() * properties.val_ / 100, 255));
  }

  return colors;
}