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Baseline support #317

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woehrl01 wants to merge 33 commits from baseline-support into master
pull from: baseline-support
merge into: DaddyFrosty:master
Conversation 39 Commits 33 Files Changed 20 +1021 -3
14 changed files with 1021 additions and 3 deletions
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118
yoga/Yoga.c
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@@ -337,16 +337,16 @@ YGMeasureFunc YGNodeGetMeasureFunc(const YGNodeRef node) {
void YGNodeSetBaselineFunc(const YGNodeRef node, YGBaselineFunc baselineFunc) {
if (baselineFunc == NULL) {
node->baseline = NULL;
}
else {
node->baseline = baselineFunc;
}
if (baselineFunc == NULL) {
node->baseline = NULL;
}
else {
node->baseline = baselineFunc;
}
}
YGBaselineFunc YGNodeGetBaselineFunc(const YGNodeRef node) {
return node->baseline;
return node->baseline;
}
void YGNodeInsertChild(const YGNodeRef node, const YGNodeRef child, const uint32_t index) {
@@ -959,55 +959,55 @@ static inline YGDirection YGNodeResolveDirection(const YGNodeRef node,
static float YGBaselineOfFirstLine(const YGNodeRef node, const YGFlexDirection mainAxis, const float parentWidth)
{
if(node->baseline != NULL)
{
return node->baseline(node);
}
if(node->baseline != NULL)
{
return node->baseline(node);
}
YGNodeRef baselineChild = NULL;
for(unsigned int i = 0; i < YGNodeGetChildCount(node); ++i)
{
const YGNodeRef child = YGNodeGetChild(node, i);
if(child->style.positionType == YGPositionTypeAbsolute || child->lineIndex > 0)
{
continue;
}
YGNodeRef baselineChild = NULL;
for(unsigned int i = 0; i < YGNodeGetChildCount(node); ++i)
{
const YGNodeRef child = YGNodeGetChild(node, i);
if(child->style.positionType == YGPositionTypeAbsolute || child->lineIndex > 0)
{
continue;
}
if(YGNodeAlignItem(node, child) == YGAlignBaseline)
{
baselineChild = child;
break;
}
if(YGNodeAlignItem(node, child) == YGAlignBaseline)
{
baselineChild = child;
break;
}
if(baselineChild == NULL)
{
baselineChild = child;
}
}
if(baselineChild == NULL)
{
baselineChild = child;
}
}
if(baselineChild == NULL)
{
return YGUndefined;
}
if(baselineChild == NULL)
{
return YGUndefined;
}
float baseline = YGBaselineOfFirstLine(baselineChild, node->style.direction, node->layout.measuredDimensions[YGDimensionWidth]);
if(YGFloatIsUndefined(baseline))
{
baseline = YGNodeLeadingPaddingAndBorder(baselineChild, mainAxis, parentWidth)
+ baselineChild->layout.measuredDimensions[dim[mainAxis]];
}
float baseline = YGBaselineOfFirstLine(baselineChild, node->style.direction, node->layout.measuredDimensions[YGDimensionWidth]);
if(YGFloatIsUndefined(baseline))
{
baseline = YGNodeLeadingPaddingAndBorder(baselineChild, mainAxis, parentWidth)
+ baselineChild->layout.measuredDimensions[dim[mainAxis]];
}
return baseline + baselineChild->layout.position[YGEdgeTop];
return baseline + baselineChild->layout.position[YGEdgeTop];
}
static float YGBaselineWithMargin(const YGNodeRef node, const YGFlexDirection mainAxis, const float parentWidth)
{
float baseline = YGBaselineOfFirstLine(node, mainAxis, parentWidth);
if(YGFloatIsUndefined(baseline))
{
baseline = node->layout.measuredDimensions[dim[mainAxis]];
}
return baseline + YGNodeLeadingMargin(node, mainAxis, parentWidth);
float baseline = YGBaselineOfFirstLine(node, mainAxis, parentWidth);
emilsjolander commented 2017-01-05 12:09:44 -08:00 (Migrated from github.com)
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not quite sure why we break if a child has more than one line. That would mean if the first child of this node has two lines then the baseline would default to the height of the node. I'm not sure why that would be correct.

not quite sure why we break if a child has more than one line. That would mean if the first child of this node has two lines then the baseline would default to the height of the node. I'm not sure why that would be correct.
woehrl01 commented 2017-01-05 12:15:22 -08:00 (Migrated from github.com)
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we break as only childs on the first line which have align baseline are taken into account. I already added a testcase for this.

we break as only childs on the first line which have align baseline are taken into account. I already added a testcase for this.
woehrl01 commented 2017-01-05 12:21:22 -08:00 (Migrated from github.com)
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oh, I see the confusion, child->lineIndex does not mean that it has more than one line. It means it is itself on the seconds (or later) line.

oh, I see the confusion, ```child->lineIndex``` does not mean that it has more than one line. It means it is itself on the seconds (or later) line.
emilsjolander commented 2017-01-05 12:45:58 -08:00 (Migrated from github.com)
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@woehrl01 yeah that was my confusion, i'm not super familiar with the multi line code and read it too quickly 🐱

@woehrl01 yeah that was my confusion, i'm not super familiar with the multi line code and read it too quickly 🐱
if(YGFloatIsUndefined(baseline))
{
baseline = node->layout.measuredDimensions[dim[mainAxis]];
}
return baseline + YGNodeLeadingMargin(node, mainAxis, parentWidth);
}
@@ -2512,7 +2512,7 @@ static void YGNodelayoutImpl(const YGNodeRef node,
break;
case YGAlignAuto:
case YGAlignFlexStart:
case YGAlignBaseline:
case YGAlignBaseline:
break;
}
@@ -2523,7 +2523,7 @@ static void YGNodelayoutImpl(const YGNodeRef node,
// compute the line's height and find the endIndex
float lineHeight = 0;
float maxAscentForCurrentLine = 0;
float maxAscentForCurrentLine = 0;
for (ii = startIndex; ii < childCount; ii++) {
const YGNodeRef child = YGNodeListGet(node->children, ii);
@@ -2532,11 +2532,11 @@ static void YGNodelayoutImpl(const YGNodeRef node,
break;
}
if (performLayout && YGNodeAlignItem(node, child) == YGAlignBaseline)
{
maxAscentForCurrentLine = fmaxf(maxAscentForCurrentLine,
YGBaselineWithMargin(child, crossAxis, availableInnerWidth));
}
if (performLayout && YGNodeAlignItem(node, child) == YGAlignBaseline)
{
maxAscentForCurrentLine = fmaxf(maxAscentForCurrentLine,
YGBaselineWithMargin(child, crossAxis, availableInnerWidth));
}
if (YGNodeIsLayoutDimDefined(child, crossAxis)) {
lineHeight = fmaxf(lineHeight,
@@ -2579,12 +2579,12 @@ static void YGNodelayoutImpl(const YGNodeRef node,
// (auto) crossAxis dimension.
break;
}
case YGAlignBaseline: {
child->layout.position[pos[crossAxis]] = currentLead
+ maxAscentForCurrentLine -
YGBaselineWithMargin(child, crossAxis, availableInnerWidth);;
break;
}
case YGAlignBaseline: {
child->layout.position[pos[crossAxis]] = currentLead
+ maxAscentForCurrentLine -
YGBaselineWithMargin(child, crossAxis, availableInnerWidth);;
break;
}
case YGAlignAuto:
break;
}