ColorEntry ColorScheme::colorEntry(int index , uint randomSeed) const
{
Q_ASSERT( index >= 0 && index < TABLE_COLORS );
if ( randomSeed != 0 )
qsrand(randomSeed);
ColorEntry entry = colorTable()[index];
if ( randomSeed != 0 &&
_randomTable != 0 &&
!_randomTable[index].isNull() )
{
const RandomizationRange& range = _randomTable[index];
int hueDifference = range.hue ? (qrand() % range.hue) - range.hue/2 : 0;
int saturationDifference = range.saturation ? (qrand() % range.saturation) - range.saturation/2 : 0;
int valueDifference = range.value ? (qrand() % range.value) - range.value/2 : 0;
QColor& color = entry.color;
int newHue = qAbs( (color.hue() + hueDifference) % MAX_HUE );
int newValue = qMin( qAbs(color.value() + valueDifference) , 255 );
int newSaturation = qMin( qAbs(color.saturation() + saturationDifference) , 255 );
color.setHsv(newHue,newSaturation,newValue);
}
return entry;
}
inline QImage threshold(const QImage &src,
const QVector<int> &thresholds,
const QVector<int> &colors)
{
QImage dst(src.size(), src.format());
QVector<quint8> colorTable(256);
int j = 0;
for (int i = 0; i < colorTable.size(); i++) {
if (j < thresholds.size() && i >= thresholds[j])
j++;
colorTable[i] = quint8(colors[j]);
}
for (int y = 0; y < src.height(); y++) {
const quint8 *srcLine = src.constScanLine(y);
quint8 *dstLine = dst.scanLine(y);
for (int x = 0; x < src.width(); x++)
dstLine[x] = colorTable[srcLine[x]];
}
return dst;
}
void DREAM3DGraphicsView::loadBaseImageFile(const QString& filename)
{
m_BaseImage = QImage(filename);
if (m_BaseImage.isNull() == true)
{
return;
}
QSize pSize(0, 0);
pSize = m_BaseImage.size();
m_OverlayImage = m_BaseImage;
m_CompositedImage = m_BaseImage;
QVector<QRgb > colorTable(256);
for (quint32 i = 0; i < 256; ++i)
{
colorTable[i] = qRgb(i, i, i);
}
m_BaseImage.setColorTable(colorTable);
if (m_BaseImage.isNull() == true)
{
std::cout << "Base Image was NULL for some reason. Returning" << std::endl;
return;
}
QGraphicsScene* gScene = scene();
if (gScene == NULL)
{
gScene = new QGraphicsScene(this);
setScene(gScene);
}
else
{
setScene(NULL);
gScene->deleteLater();
gScene = new QGraphicsScene(this);
setScene(gScene);
delete m_ImageGraphicsItem;
m_ImageGraphicsItem = NULL;
}
if (NULL == m_ImageGraphicsItem)
{
QImageReader reader(filename);
QPixmap pixmap = QPixmap::fromImageReader(&reader, 0);
m_ImageGraphicsItem = gScene->addPixmap(pixmap);
}
m_ImageGraphicsItem->setAcceptDrops(true);
m_ImageGraphicsItem->setZValue(-1);
QRectF rect = m_ImageGraphicsItem->boundingRect();
gScene->setSceneRect(rect);
centerOn(m_ImageGraphicsItem);
this->updateDisplay();
emit fireBaseImageFileLoaded(filename);
}
int QgsGrassRasterProvider::colorInterpretation( int bandNo ) const
{
// TODO: avoid loading color table here or cache it
QList<QgsColorRampShader::ColorRampItem> ct = colorTable( bandNo );
if ( ct.size() > 0 )
{
return QgsRaster::ContinuousPalette;
}
return QgsRaster::GrayIndex;
}
void ColorScheme::write(KConfig& config) const
{
KConfigGroup configGroup = config.group("General");
configGroup.writeEntry("Description",_description);
configGroup.writeEntry("Opacity",_opacity);
for (int i=0 ; i < TABLE_COLORS ; i++)
{
RandomizationRange random = _randomTable != 0 ? _randomTable[i] : RandomizationRange();
writeColorEntry(config,colorNameForIndex(i),colorTable()[i],random);
}
}
QVector<QColor> ZLabelColorTable::constructColorTable()
{
QVector<QColor> colorTable(10);
colorTable[0] = QColor(Qt::white);
colorTable[1] = QColor(Qt::red);
colorTable[2] = QColor(Qt::green);
colorTable[3] = QColor(Qt::blue);
colorTable[4] = QColor(Qt::cyan);
colorTable[5] = QColor(Qt::magenta);
colorTable[6] = QColor(Qt::yellow);
colorTable[7] = QColor(Qt::darkCyan);
colorTable[8] = QColor(165, 42, 42);
colorTable[9] = QColor(255, 140, 0);
for (QVector<QColor>::iterator iter = colorTable.begin();
iter != colorTable.end(); ++iter) {
iter->setAlpha(128);
}
return colorTable;
}
// Regression test for decoding a gif image with sampleSize of 4, which was
// previously crashing.
DEF_TEST(Gif_Sampled, r) {
SkAutoTDelete<SkFILEStream> stream(
new SkFILEStream(GetResourcePath("test640x479.gif").c_str()));
REPORTER_ASSERT(r, stream->isValid());
if (!stream->isValid()) {
return;
}
SkAutoTDelete<SkAndroidCodec> codec(SkAndroidCodec::NewFromStream(stream.release()));
REPORTER_ASSERT(r, codec);
if (!codec) {
return;
}
// Construct a color table for the decode if necessary
SkAutoTUnref<SkColorTable> colorTable(nullptr);
SkPMColor* colorPtr = nullptr;
int* colorCountPtr = nullptr;
int maxColors = 256;
if (kIndex_8_SkColorType == codec->getInfo().colorType()) {
SkPMColor colors[256];
colorTable.reset(new SkColorTable(colors, maxColors));
colorPtr = const_cast<SkPMColor*>(colorTable->readColors());
colorCountPtr = &maxColors;
}
SkAndroidCodec::AndroidOptions options;
options.fSampleSize = 4;
options.fColorPtr = colorPtr;
options.fColorCount = colorCountPtr;
SkBitmap bm;
bm.allocPixels(codec->getInfo(), nullptr, colorTable.get());
const SkCodec::Result result = codec->getAndroidPixels(codec->getInfo(), bm.getPixels(),
bm.rowBytes(), &options);
REPORTER_ASSERT(r, result == SkCodec::kSuccess);
}
// -----------------------------------------------------------------------------
//
// -----------------------------------------------------------------------------
QImage PoleFigureImageUtilities::GenerateScalarBar(int imageWidth, int imageHeight, PoleFigureConfiguration_t& config)
{
int numColors = config.numColors;
QImage pImage(imageWidth, imageHeight, QImage::Format_ARGB32_Premultiplied);
pImage.fill(0xFFFFFFFF); // All white background
// Create a Painter backed by a QImage to draw into
QPainter painter;
painter.begin(&pImage);
painter.setRenderHint(QPainter::Antialiasing, true);
int penWidth = 1;
#if 0
// DRAW A BORDER AROUND THE IMAGE FOR DEBUGGING
QColor c(RgbColor::dRgb(255, 0, 0, 255));
painter.setPen(QPen(c, penWidth, Qt::SolidLine, Qt::SquareCap, Qt::RoundJoin));
painter.drawLine(0, 0, imageWidth, 0); // Top
painter.drawLine(0, 0, 0, imageHeight); // Left
painter.drawLine(imageWidth, 0, imageWidth, imageHeight); // Right
painter.drawLine(0, imageHeight, imageWidth, imageHeight); // Bottom
//-----------------
#endif
//Get all the colors that we will need
QVector<SIMPL::Rgb> colorTable(numColors);
QVector<float> colors(3 * numColors, 0.0);
SIMPLColorTable::GetColorTable(numColors, colors); // Generate the color table values
float r = 0.0, g = 0.0, b = 0.0;
for (int i = 0; i < numColors; i++) // Convert them to QRgbColor values
{
r = colors[3 * i];
g = colors[3 * i + 1];
b = colors[3 * i + 2];
colorTable[i] = RgbColor::dRgb(r * 255, g * 255, b * 255, 255);
}
// Now start from the bottom and draw colored lines up the scale bar
// A Slight Indentation for the scalar bar
float margin = 0.05f;
float scaleBarRelativeWidth = 0.10f;
float scaleBarRelativeHeight = 1.0f - (margin * 2);
int colorHeight = int( (imageHeight * scaleBarRelativeHeight) / numColors);
QPointF topLeft(imageWidth * margin, imageHeight * margin);
QSizeF size(imageWidth * scaleBarRelativeWidth, imageHeight * scaleBarRelativeHeight);
int yLinePos = topLeft.y();
QPointF start = topLeft;
QPointF end = topLeft;
for(int i = numColors - 1; i >= 0; i--)
{
QColor c(colorTable[i]);
painter.setPen(QPen(c, penWidth, Qt::SolidLine, Qt::SquareCap, Qt::RoundJoin));
for(int j = 0; j < colorHeight; j++)
{
start.setY(yLinePos);
end.setX(topLeft.x() + (imageWidth * scaleBarRelativeWidth));
end.setY(yLinePos);
painter.drawLine(start, end);
yLinePos++;
}
}
// Draw the border of the scale bar
size = QSizeF(imageWidth * scaleBarRelativeWidth, numColors * colorHeight); // Add two pixel to the height so we don't over write part of the scale bar
QRectF scaleBorder(topLeft, size);
penWidth = 2;
painter.setPen(QPen(QColor(0, 0, 0, 255), penWidth, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
painter.drawRect(scaleBorder);
// Draw the Text Labels of the Scale Bar
int startFontPtSize = 10;
QFont font("Ariel", startFontPtSize, QFont::Bold);
QFontMetrics metrics(font);
int fontPixelsHeight = metrics.height();
while(fontPixelsHeight < colorHeight * 2)
{
startFontPtSize++;
font = QFont("Ariel", startFontPtSize, QFont::Bold);
metrics = QFontMetrics(font);
fontPixelsHeight = metrics.height();
}
painter.setFont(font);
// Draw some more information to the right of the Scale Bar
QString maxStr = QString::number(config.maxScale, 'f', 3);
painter.drawText(topLeft.x() + (imageWidth * scaleBarRelativeWidth) + 10, topLeft.y() + fontPixelsHeight, maxStr);
QString minStr = QString::number(config.minScale, 'f', 3);
painter.drawText(topLeft.x() + (imageWidth * scaleBarRelativeWidth) + 10, topLeft.y() + size.height(), minStr);
//------------------------------
// Draw some statistics for the pole figures
startFontPtSize = 8; // Set it to a rather large point size so we can fit the text perfectly. Only an insanely large Polefigure would go past this size
int labelWidth = 0;
// Make sure the size of font we just picked will allow the string to NOT be clipped because the rendered
// pixel width is past the right side of the image
int endOfStringYPos = topLeft.x() + (imageWidth * scaleBarRelativeWidth) + 10 + labelWidth;
while(endOfStringYPos < imageWidth)
{
startFontPtSize++;
font = QFont("Ariel", startFontPtSize, QFont::Bold);
metrics = QFontMetrics(font);
QString label("Upper & Lower");
QString label2 = QString("Samples: ") + QString::number(config.eulers->getNumberOfTuples());
fontPixelsHeight = metrics.height(); // Update the font height
int labelWidth = metrics.width(label); // Figure out which string is longer (pixel wise)
if (labelWidth < metrics.width(label2))
{
labelWidth = metrics.width(label2);
}
endOfStringYPos = topLeft.x() + (imageWidth * scaleBarRelativeWidth) + 10 + labelWidth;
}
startFontPtSize--;
font = QFont("Ariel", startFontPtSize, QFont::Bold);
metrics = QFontMetrics(font);
QString label("Upper & Lower");
QString label2 = QString("Samples: ") + QString::number(config.eulers->getNumberOfTuples());
labelWidth = metrics.width(label);
if (labelWidth < metrics.width(label2))
{
labelWidth = metrics.width(label2);
}
// Set the font into the Painter
painter.setFont(font);
QPointF statsPoint(topLeft.x() + (imageWidth * scaleBarRelativeWidth) + 10, imageHeight * .5);
// Draw some more Statistics Text
painter.drawText(statsPoint, label);
statsPoint.setY(imageHeight * .5 + fontPixelsHeight);
painter.drawText(statsPoint, label2);
painter.end();
// Scale the image down to 225 pixels
return pImage;
}
// -----------------------------------------------------------------------------
//
// -----------------------------------------------------------------------------
QImage PoleFigureMaker::generateColorPoleFigureImage(const PoleFigureData& config)
{
int kernelWidth = config.kernelRadius[0];
int kernelHeight = config.kernelRadius[1];
int imageWidth = config.imageSize[0];
int imageHeight = config.imageSize[1];
// qDebug() << "Size: " << size << "\n";
// Generate the Kernel Weights
generateKernelWeigths(kernelWidth, kernelHeight);
// Allocate an array to hold the image data and initialize it to all zeros
QVector<qint32> data(imageWidth * imageHeight, 1);
QVector<qint32> counts(imageWidth * imageHeight, 0);
QVector<float> xPoints = config.xData;
QVector<float> yPoints = config.yData;
int size = yPoints.size();
// Find the max count
qint32 max = -2147483646;
qint32 min = 2147483647;
// Loop over all the data and get the x,y coords (scaled) and turn on the data pixel
// This discretizes the data onto the pixel grid
for (int i = 0; i < size; ++i)
{
int xCoord = (xPoints[i] + 1) * imageWidth / 2;
int yCoord = (yPoints[i] + 1) * imageHeight / 2;
data[ yCoord * imageWidth + xCoord]++;
if (data[ yCoord * imageWidth + xCoord] > max) { max = data[ yCoord * imageWidth + xCoord];}
if (data[ yCoord * imageWidth + xCoord] < min) { min = data[ yCoord * imageWidth + xCoord];}
}
// qDebug() << "Max Data[]: " << max << "\n";
qint32 value = 0;
for (int yCoord = 0; yCoord < imageHeight; ++yCoord)
{
for (int xCoord = 0; xCoord < imageWidth; ++xCoord)
{
value = countPixelNeighbors(imageWidth, imageHeight, xCoord, yCoord, data, counts, kernelWidth, kernelHeight);
if (value > max) { max = value;}
if (value < min) { min = value;}
}
}
value = 0;
for (int yCoord = 0; yCoord < imageHeight; ++yCoord)
{
for (int xCoord = 0; xCoord < imageWidth; ++xCoord)
{
value = countPixelNeighbors(imageWidth, imageHeight, xCoord, yCoord, data, counts, kernelWidth, kernelHeight, true);
}
}
if (max < 14) { max = 14; }
QImage image (imageWidth, imageHeight, QImage::Format_ARGB32_Premultiplied);
image.fill(0);
qint32 numColors = max + 1;
QVector<QColor> colorTable(numColors);
qint32 range = max - min;
float r, g, b;
for (int i = 0; i < numColors; i++)
{
int val = min + ((float)i / numColors) * range;
getColorCorrespondingTovalue(val, r, g, b, max, min);
colorTable[i] = QColor(r * 255, g * 255, b * 255, 255);
}
// Index 0 is all white which is every pixel outside of the ODF circle
colorTable[0] = QColor(255, 255, 255, 255);
for (int yCoord = 0; yCoord < imageHeight; ++yCoord)
{
for (int xCoord = 0; xCoord < imageWidth; ++xCoord)
{
quint32 colorIndex = counts[yCoord * imageWidth + xCoord];
image.setPixel(xCoord, yCoord, colorTable[colorIndex].rgba());
}
}
// Flip the image so the (-1, -1) is in the lower left
image = image.mirrored(true, false);
return paintImage(config.imageSize[0], config.imageSize[1], config.label, image);
}
QColor ColorScheme::backgroundColor() const
{
return colorTable()[1].color;
}
QColor ColorScheme::foregroundColor() const
{
return colorTable()[0].color;
}
bool SkBitmapRegionCodec::decodeRegion(SkBitmap* bitmap, SkBRDAllocator* allocator,
const SkIRect& desiredSubset, int sampleSize, SkColorType prefColorType,
bool requireUnpremul) {
// Fix the input sampleSize if necessary.
if (sampleSize < 1) {
sampleSize = 1;
}
// The size of the output bitmap is determined by the size of the
// requested subset, not by the size of the intersection of the subset
// and the image dimensions.
// If inputX is negative, we will need to place decoded pixels into the
// output bitmap starting at a left offset. Call this outX.
// If outX is non-zero, subsetX must be zero.
// If inputY is negative, we will need to place decoded pixels into the
// output bitmap starting at a top offset. Call this outY.
// If outY is non-zero, subsetY must be zero.
int outX;
int outY;
SkIRect subset = desiredSubset;
SubsetType type = adjust_subset_rect(fCodec->getInfo().dimensions(), &subset, &outX, &outY);
if (SubsetType::kOutside_SubsetType == type) {
return false;
}
// Ask the codec for a scaled subset
if (!fCodec->getSupportedSubset(&subset)) {
SkCodecPrintf("Error: Could not get subset.\n");
return false;
}
SkISize scaledSize = fCodec->getSampledSubsetDimensions(sampleSize, subset);
// Create the image info for the decode
SkColorType dstColorType = fCodec->computeOutputColorType(prefColorType);
SkAlphaType dstAlphaType = fCodec->computeOutputAlphaType(requireUnpremul);
SkImageInfo decodeInfo = fCodec->getInfo().makeWH(scaledSize.width(), scaledSize.height())
.makeColorType(dstColorType)
.makeAlphaType(dstAlphaType);
// Construct a color table for the decode if necessary
SkAutoTUnref<SkColorTable> colorTable(nullptr);
int maxColors = 256;
SkPMColor colors[256];
if (kIndex_8_SkColorType == dstColorType) {
colorTable.reset(new SkColorTable(colors, maxColors));
}
// Initialize the destination bitmap
int scaledOutX = 0;
int scaledOutY = 0;
int scaledOutWidth = scaledSize.width();
int scaledOutHeight = scaledSize.height();
if (SubsetType::kPartiallyInside_SubsetType == type) {
scaledOutX = outX / sampleSize;
scaledOutY = outY / sampleSize;
// We need to be safe here because getSupportedSubset() may have modified the subset.
const int extraX = SkTMax(0, desiredSubset.width() - outX - subset.width());
const int extraY = SkTMax(0, desiredSubset.height() - outY - subset.height());
const int scaledExtraX = extraX / sampleSize;
const int scaledExtraY = extraY / sampleSize;
scaledOutWidth += scaledOutX + scaledExtraX;
scaledOutHeight += scaledOutY + scaledExtraY;
}
SkImageInfo outInfo = decodeInfo.makeWH(scaledOutWidth, scaledOutHeight);
if (kGray_8_SkColorType == dstColorType) {
// The legacy implementations of BitmapFactory and BitmapRegionDecoder
// used kAlpha8 for grayscale images (before kGray8 existed). While
// the codec recognizes kGray8, we need to decode into a kAlpha8
// bitmap in order to avoid a behavior change.
outInfo = outInfo.makeColorType(kAlpha_8_SkColorType).makeAlphaType(kPremul_SkAlphaType);
}
bitmap->setInfo(outInfo);
if (!bitmap->tryAllocPixels(allocator, colorTable.get())) {
SkCodecPrintf("Error: Could not allocate pixels.\n");
return false;
}
// Zero the bitmap if the region is not completely within the image.
// TODO (msarett): Can we make this faster by implementing it to only
// zero parts of the image that we won't overwrite with
// pixels?
SkCodec::ZeroInitialized zeroInit = allocator ? allocator->zeroInit() :
SkCodec::kNo_ZeroInitialized;
if (SubsetType::kPartiallyInside_SubsetType == type &&
SkCodec::kNo_ZeroInitialized == zeroInit) {
void* pixels = bitmap->getPixels();
size_t bytes = outInfo.getSafeSize(bitmap->rowBytes());
memset(pixels, 0, bytes);
}
// Decode into the destination bitmap
SkAndroidCodec::AndroidOptions options;
options.fSampleSize = sampleSize;
options.fSubset = ⊂
options.fColorPtr = colors;
options.fColorCount = &maxColors;
options.fZeroInitialized = zeroInit;
void* dst = bitmap->getAddr(scaledOutX, scaledOutY);
SkCodec::Result result = fCodec->getAndroidPixels(decodeInfo, dst, bitmap->rowBytes(),
&options);
if (SkCodec::kSuccess != result && SkCodec::kIncompleteInput != result) {
SkCodecPrintf("Error: Could not get pixels.\n");
return false;
}
// Intialize the color table
if (kIndex_8_SkColorType == dstColorType) {
colorTable->dangerous_overwriteColors(colors, maxColors);
}
return true;
}
