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add AxisAlignment::Between, for equal space between elements

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inspired by flexbox's space-between
This commit is contained in:
matcool 2024-06-18 00:16:02 -03:00
parent 97d2e44611
commit adc4469f77
2 changed files with 42 additions and 11 deletions
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3
loader/include/Geode/cocos/base_nodes/Layout.hpp vendored
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@ -77,6 +77,9 @@ enum class AxisAlignment {
// Each item gets the same portion from the layout (disregards gap)
// |.o..o..o.|
Even,
// Space between each item is the same (disregards gap)
// |o...o...o|
Between,
};
constexpr float AXISLAYOUT_DEFAULT_MIN_SCALE = 0.65f;

50
loader/src/cocos2d-ext/AxisLayout.cpp
View file

@ -592,6 +592,7 @@ public:
rowCrossPos = totalRowCrossLength - rowsEndsLength * 1.5f * scale * (1.f - columnSquish);
} break;
case AxisAlignment::Between:
case AxisAlignment::Even: {
totalRowCrossLength = available.crossLength;
rowCrossPos = totalRowCrossLength - rowsEndsLength * 1.5f * scale * (1.f - columnSquish);
@ -609,6 +610,14 @@ public:
}
float rowEvenSpace = available.crossLength / rows->count();
float rowCrossLengthTotal = ranges::reduce<float>(
CCArrayExt<Row*>(rows),
[](float& acc, Row* row) {
acc += row->crossLength;
}
);
float rowCrossBetweenSpace = std::max(0.f, (available.crossLength - rowCrossLengthTotal) / std::max(rows->count() - 1, 1u));
for (auto row : CCArrayExt<Row*>(rows)) {
row->accountSpacers(m_axis, available.axisLength, available.crossLength);
@ -616,16 +625,18 @@ public:
if (m_crossAlignment == AxisAlignment::Even) {
rowCrossPos -= rowEvenSpace / 2 + row->crossLength / 2;
}
else if (m_crossAlignment == AxisAlignment::Between) {
rowCrossPos -= row->crossLength * columnSquish;
}
else {
rowCrossPos -= row->crossLength * columnSquish;
}
// starting axis pos
float rowAxisPos;
switch (m_axisAlignment) {
case AxisAlignment::Start: {
rowAxisPos = 0.f;
} break;
case AxisAlignment::Start:
case AxisAlignment::Between:
case AxisAlignment::Even: {
rowAxisPos = 0.f;
} break;
@ -639,10 +650,7 @@ public:
} break;
}
float evenSpace = available.axisLength / row->nodes->count();
size_t ix = 0;
AxisLayoutOptions const* prev = nullptr;
float rowLengthTotal = 0.f;
for (auto& node : CCArrayExt<CCNode*>(row->nodes)) {
auto opts = axisOpts(node);
// rescale node if overflowing
@ -655,7 +663,17 @@ public:
}
node->setScale(nodeScale);
}
if (!ix) {
auto pos = nodeAxis(node, m_axis, row->squish);
rowLengthTotal += pos.axisLength;
}
float evenSpace = available.axisLength / row->nodes->count();
float rowBetweenSpace = std::max(0.f, (available.axisLength - rowLengthTotal) / std::max(row->nodes->count() - 1, 1u));
size_t ix = 0;
AxisLayoutOptions const* prev = nullptr;
for (auto& node : CCArrayExt<CCNode*>(row->nodes)) {
auto opts = axisOpts(node);
if (ix == 0) {
rowAxisPos += row->axisEndsLength * row->scale / 2 * (1.f - row->squish);
}
auto pos = nodeAxis(node, m_axis, row->squish);
@ -665,8 +683,12 @@ public:
rowAxisPos += evenSpace -
row->axisEndsLength * row->scale * (1.f - row->squish) * 1.f / nodes->count();
}
else if (m_axisAlignment == AxisAlignment::Between) {
axisPos = rowAxisPos + pos.axisLength * pos.axisAnchor;
rowAxisPos += pos.axisLength + rowBetweenSpace;
}
else {
if (ix) {
if (ix != 0) {
if (row->prio == minMaxPrios.first) {
rowAxisPos += this->nextGap(prev, opts) * row->scale * row->squish;
}
@ -684,7 +706,9 @@ public:
crossOffset = pos.crossLength * pos.crossAnchor;
} break;
case AxisAlignment::Center: case AxisAlignment::Even: {
case AxisAlignment::Center:
case AxisAlignment::Between:
case AxisAlignment::Even: {
crossOffset = row->crossLength / 2 - pos.crossLength * (.5f - pos.crossAnchor);
} break;
@ -706,6 +730,10 @@ public:
rowCrossPos -= rowEvenSpace / 2 - row->crossLength / 2 -
rowsEndsLength * 1.5f * row->scale * (1.f - columnSquish) * 1.f / rows->count();
}
else if (m_crossAlignment == AxisAlignment::Between) {
rowCrossPos -= rowCrossBetweenSpace -
rowsEndsLength * 1.5f * row->scale * (1.f - columnSquish) * 1.f / rows->count();
}
else {
rowCrossPos -= m_gap * columnSquish -
rowsEndsLength * 1.5f * row->scale * (1.f - columnSquish) * 1.f / rows->count();