osb/source/windowing/StarVerticalLayout.cpp

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#include "StarVerticalLayout.hpp"
namespace Star {
VerticalLayout::VerticalLayout(VerticalAnchor verticalAnchor, int verticalSpacing) {
setVerticalAnchor(verticalAnchor);
setVerticalSpacing(verticalSpacing);
disableScissoring();
}
void VerticalLayout::update(float) {
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m_size = Vec2I(0, 0);
if (m_members.empty())
return;
for (auto const& child : m_members) {
auto childSize = child->size();
m_size[1] += childSize[1];
m_size[0] = max(m_size[0], childSize[0]);
}
m_size[1] += (m_members.size() - 1) * m_verticalSpacing;
auto bounds = contentBoundRect();
int verticalPos = m_fillDown ? bounds.yMax() : bounds.yMin();
for (auto const& child : reverseIterate(m_members)) {
auto childSize = child->size();
Vec2I targetPosition;
if (m_horizontalAnchor == HorizontalAnchor::LeftAnchor)
targetPosition[0] = bounds.xMin();
else if (m_horizontalAnchor == HorizontalAnchor::RightAnchor)
targetPosition[0] = bounds.xMax() - childSize[0];
else if (m_horizontalAnchor == HorizontalAnchor::HMidAnchor)
targetPosition[0] = -childSize[0] / 2;
if (m_fillDown) {
verticalPos -= childSize[1];
targetPosition[1] = verticalPos;
verticalPos -= m_verticalSpacing;
} else {
targetPosition[1] = verticalPos;
verticalPos -= childSize[1];
verticalPos -= m_verticalSpacing;
}
// needed because position is included in relativeBoundRect
child->setPosition(Vec2I(0, 0));
child->setPosition(targetPosition - child->relativeBoundRect().min());
}
}
Vec2I VerticalLayout::size() const {
return m_size;
}
RectI VerticalLayout::relativeBoundRect() const {
return contentBoundRect().translated(relativePosition());
}
void VerticalLayout::setHorizontalAnchor(HorizontalAnchor horizontalAnchor) {
m_horizontalAnchor = horizontalAnchor;
update(0);
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}
void VerticalLayout::setVerticalAnchor(VerticalAnchor verticalAnchor) {
m_verticalAnchor = verticalAnchor;
update(0);
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}
void VerticalLayout::setVerticalSpacing(int verticalSpacing) {
m_verticalSpacing = verticalSpacing;
update(0);
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}
void VerticalLayout::setFillDown(bool fillDown) {
m_fillDown = fillDown;
update(0);
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}
RectI VerticalLayout::contentBoundRect() const {
auto min = Vec2I(0, 0);
if (m_horizontalAnchor == HorizontalAnchor::RightAnchor)
min[0] -= m_size[0];
else if (m_horizontalAnchor == HorizontalAnchor::HMidAnchor)
min[0] -= m_size[0] / 2;
if (m_verticalAnchor == VerticalAnchor::TopAnchor)
min[1] -= m_size[1];
else if (m_verticalAnchor == VerticalAnchor::VMidAnchor)
min[1] -= m_size[1] / 2;
return RectI::withSize(min, m_size);
}
}