PRBool
nsIBox::AddCSSMaxSize(nsIBox* aBox, nsSize& aSize, PRBool &aWidthSet, PRBool &aHeightSet)
{
aWidthSet = PR_FALSE;
aHeightSet = PR_FALSE;
// add in the css min, max, pref
const nsStylePosition* position = aBox->GetStylePosition();
// and max
// see if the width or height was specifically set
// XXX Handle eStyleUnit_Enumerated?
// (Handling the eStyleUnit_Enumerated types requires
// GetPrefSize/GetMinSize methods that don't consider
// (min-/max-/)(width/height) properties.)
const nsStyleCoord maxWidth = position->mMaxWidth;
if (maxWidth.ConvertsToLength()) {
aSize.width = nsRuleNode::ComputeCoordPercentCalc(maxWidth, 0);
aWidthSet = PR_TRUE;
}
// percentages and calc() with percentages are treated like 'none'
const nsStyleCoord &maxHeight = position->mMaxHeight;
if (maxHeight.ConvertsToLength()) {
aSize.height = nsRuleNode::ComputeCoordPercentCalc(maxHeight, 0);
aHeightSet = PR_TRUE;
}
// percentages and calc() with percentages are treated like 'none'
nsIContent* content = aBox->GetContent();
if (content) {
nsAutoString value;
PRInt32 error;
content->GetAttr(kNameSpaceID_None, nsGkAtoms::maxwidth, value);
if (!value.IsEmpty()) {
value.Trim("%");
nscoord val =
nsPresContext::CSSPixelsToAppUnits(value.ToInteger(&error));
aSize.width = val;
aWidthSet = PR_TRUE;
}
content->GetAttr(kNameSpaceID_None, nsGkAtoms::maxheight, value);
if (!value.IsEmpty()) {
value.Trim("%");
nscoord val =
nsPresContext::CSSPixelsToAppUnits(value.ToInteger(&error));
aSize.height = val;
aHeightSet = PR_TRUE;
}
}
return (aWidthSet || aHeightSet);
}
static inline bool IsFixedOffset(const nsStyleCoord& aCoord)
{ return aCoord.ConvertsToLength(); }
static inline bool IsFixedMarginSize(const nsStyleCoord& aCoord)
{ return aCoord.ConvertsToLength(); }