void CanvasGradient::getColor(float value, float* r, float* g, float* b, float* a)
{
ASSERT(value >= 0);
ASSERT(value <= 1);
if (value <= 0) {
*r = m_stops.first().red;
*g = m_stops.first().green;
*b = m_stops.first().blue;
*a = m_stops.first().alpha;
return;
}
if (value >= 1) {
*r = m_stops.last().red;
*g = m_stops.last().green;
*b = m_stops.last().blue;
*a = m_stops.last().alpha;
return;
}
// Find stop before and stop after and interpolate.
int stop = findStop(value);
const ColorStop& lastStop = m_stops[stop];
const ColorStop& nextStop = m_stops[stop + 1];
float stopFraction = (value - lastStop.stop) / (nextStop.stop - lastStop.stop);
*r = lastStop.red + (nextStop.red - lastStop.red) * stopFraction;
*g = lastStop.green + (nextStop.green - lastStop.green) * stopFraction;
*b = lastStop.blue + (nextStop.blue - lastStop.blue) * stopFraction;
*a = lastStop.alpha + (nextStop.alpha - lastStop.alpha) * stopFraction;
}
void Gradient::getColor(float value, float* r, float* g, float* b, float* a) const
{
ASSERT(value >= 0);
ASSERT(value <= 1);
if (m_stops.isEmpty()) {
*r = 0;
*g = 0;
*b = 0;
*a = 0;
return;
}
if (!m_stopsSorted) {
if (m_stops.size())
{
//AJB: Original code was calling std::stable_sort. That could call the global new in order to allocate memory.
//Replace it with the eastl::merege_sort and give it a allocator if it needs to allocate memory.
//+ 5/13/09 CSidhall - Removed dependance on EASTL with a modified internal sort
// Precious code:
// EA::WebKit::EASTLAllocator allocator;
// eastl::merge_sort(m_stops.begin(), m_stops.end(), allocator, compareStops);
EA::Internal::merge_sort(m_stops.data(), m_stops.size(), compareStops);
//- CS
}
m_stopsSorted = true;
}
if (value <= 0 || value <= m_stops.first().stop) {
*r = m_stops.first().red;
*g = m_stops.first().green;
*b = m_stops.first().blue;
*a = m_stops.first().alpha;
return;
}
if (value >= 1 || value >= m_stops.last().stop) {
*r = m_stops.last().red;
*g = m_stops.last().green;
*b = m_stops.last().blue;
*a = m_stops.last().alpha;
return;
}
// Find stop before and stop after and interpolate.
int stop = findStop(value);
const ColorStop& lastStop = m_stops[stop];
const ColorStop& nextStop = m_stops[stop + 1];
float stopFraction = (value - lastStop.stop) / (nextStop.stop - lastStop.stop);
*r = lastStop.red + (nextStop.red - lastStop.red) * stopFraction;
*g = lastStop.green + (nextStop.green - lastStop.green) * stopFraction;
*b = lastStop.blue + (nextStop.blue - lastStop.blue) * stopFraction;
*a = lastStop.alpha + (nextStop.alpha - lastStop.alpha) * stopFraction;
}
void Gradient::getColor(float value, float* r, float* g, float* b, float* a) const
{
ASSERT(value >= 0);
ASSERT(value <= 1);
if (m_stops.isEmpty()) {
*r = 0;
*g = 0;
*b = 0;
*a = 0;
return;
}
if (!m_stopsSorted) {
if (m_stops.size())
std::stable_sort(m_stops.begin(), m_stops.end(), compareStops);
m_stopsSorted = true;
}
if (value <= 0 || value <= m_stops.first().stop) {
*r = m_stops.first().red;
*g = m_stops.first().green;
*b = m_stops.first().blue;
*a = m_stops.first().alpha;
return;
}
if (value >= 1 || value >= m_stops.last().stop) {
*r = m_stops.last().red;
*g = m_stops.last().green;
*b = m_stops.last().blue;
*a = m_stops.last().alpha;
return;
}
// Find stop before and stop after and interpolate.
int stop = findStop(value);
const ColorStop& lastStop = m_stops[stop];
const ColorStop& nextStop = m_stops[stop + 1];
float stopFraction = (value - lastStop.stop) / (nextStop.stop - lastStop.stop);
*r = lastStop.red + (nextStop.red - lastStop.red) * stopFraction;
*g = lastStop.green + (nextStop.green - lastStop.green) * stopFraction;
*b = lastStop.blue + (nextStop.blue - lastStop.blue) * stopFraction;
*a = lastStop.alpha + (nextStop.alpha - lastStop.alpha) * stopFraction;
}
