static void
InitializeTrackSize(nscoord aPercentageBasis,
const nsStyleCoord& aMinCoord,
const nsStyleCoord& aMaxCoord,
TrackSize* aTrackSize)
{
// http://dev.w3.org/csswg/css-grid/#algo-init
nscoord& base = aTrackSize->mBase;
switch (aMaxCoord.GetUnit()) {
case eStyleUnit_Enumerated:
case eStyleUnit_FlexFraction:
base = 0;
break;
default:
base = nsRuleNode::ComputeCoordPercentCalc(aMinCoord, aPercentageBasis);
}
nscoord& limit = aTrackSize->mLimit;
switch (aMaxCoord.GetUnit()) {
case eStyleUnit_Enumerated:
limit = NS_UNCONSTRAINEDSIZE;
break;
case eStyleUnit_FlexFraction:
limit = base;
break;
default:
limit = nsRuleNode::ComputeCoordPercentCalc(aMaxCoord, aPercentageBasis);
if (limit < base) {
limit = base;
}
}
}
float
SVGContentUtils::CoordToFloat(nsSVGElement *aContent,
const nsStyleCoord &aCoord)
{
switch (aCoord.GetUnit()) {
case eStyleUnit_Factor:
// user units
return aCoord.GetFactorValue();
case eStyleUnit_Coord:
return nsPresContext::AppUnitsToFloatCSSPixels(aCoord.GetCoordValue());
case eStyleUnit_Percent: {
SVGSVGElement* ctx = aContent->GetCtx();
return ctx ? aCoord.GetPercentValue() * ctx->GetLength(SVGContentUtils::XY) : 0.0f;
}
default:
return 0.0f;
}
}
static inline bool
IsMarginZero(const nsStyleCoord &aCoord)
{
return aCoord.GetUnit() == eStyleUnit_Auto ||
nsLayoutUtils::IsMarginZero(aCoord);
}