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