justifySelf
This commit is contained in:
Michael Freno
250
FlexLove.lua
250
FlexLove.lua
@@ -582,95 +582,183 @@ function Element:layoutChildren()
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end
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end
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-- Position children
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local currentPos = spacing
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for _, child in ipairs(self.children) do
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if child.positioning == Positioning.ABSOLUTE then
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-- Skip positioning for absolute children as they should maintain their own coordinates
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goto continue
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end
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-- Position children
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local currentPos = spacing
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for _, child in ipairs(self.children) do
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if child.positioning == Positioning.ABSOLUTE then
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-- Skip positioning for absolute children as they should maintain their own coordinates
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goto continue
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end
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if self.flexDirection == FlexDirection.VERTICAL then
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-- Position relative to parent origin
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child.x = self.x + (self.margin.left or 0)
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child.y = self.y + currentPos
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if self.flexDirection == FlexDirection.VERTICAL then
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-- Position relative to parent origin
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child.x = self.x + (self.margin.left or 0)
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child.y = self.y + currentPos
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-- Apply alignment to vertical axis (alignItems)
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if self.alignItems == AlignItems.FLEX_START then
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-- nothing
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elseif self.alignItems == AlignItems.CENTER then
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child.x = self.x + (self.width - (child.width or 0)) / 2
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elseif self.alignItems == AlignItems.FLEX_END then
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child.x = self.x + self.width - (child.width or 0)
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elseif self.alignItems == AlignItems.STRETCH then
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child.width = self.width
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end
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-- Apply alignment to vertical axis (alignItems)
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if self.alignItems == AlignItems.FLEX_START then
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-- nothing
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elseif self.alignItems == AlignItems.CENTER then
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child.x = self.x + (self.width - (child.width or 0)) / 2
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elseif self.alignItems == AlignItems.FLEX_END then
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child.x = self.x + self.width - (child.width or 0)
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elseif self.alignItems == AlignItems.STRETCH then
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child.width = self.width
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end
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-- Apply self alignment to cross axis (alignSelf)
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local effectiveAlignSelf = child.alignSelf
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if child.alignSelf == AlignSelf.AUTO then
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effectiveAlignSelf = self.alignItems
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end
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-- Apply self alignment to cross axis (alignSelf)
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local effectiveAlignSelf = child.alignSelf
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if child.alignSelf == AlignSelf.AUTO then
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effectiveAlignSelf = self.alignItems
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end
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if effectiveAlignSelf == AlignSelf.FLEX_START then
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-- Position at the start of cross axis relative to parent
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child.x = self.x + (self.margin.left or 0)
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elseif effectiveAlignSelf == AlignSelf.CENTER then
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if self.flexDirection == FlexDirection.VERTICAL then
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child.x = self.x + (self.width - (child.width or 0)) / 2
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else
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child.y = self.y + (self.height - (child.height or 0)) / 2
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end
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elseif effectiveAlignSelf == AlignSelf.FLEX_END then
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if self.flexDirection == FlexDirection.VERTICAL then
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child.x = self.x + self.width - (child.width or 0)
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else
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child.y = self.y + self.height - (child.height or 0)
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end
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elseif effectiveAlignSelf == AlignSelf.STRETCH then
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if self.flexDirection == FlexDirection.VERTICAL then
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-- Only set width if not already stretched by alignItems
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if child.width ~= self.width then
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child.width = self.width
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end
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else
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-- Only set height if not already stretched by alignItems
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if child.height ~= self.height then
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child.height = self.height
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end
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end
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end
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if effectiveAlignSelf == AlignSelf.FLEX_START then
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-- Position at the start of cross axis relative to parent
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child.x = self.x + (self.margin.left or 0)
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elseif effectiveAlignSelf == AlignSelf.CENTER then
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if self.flexDirection == FlexDirection.VERTICAL then
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child.x = self.x + (self.width - (child.width or 0)) / 2
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else
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child.y = self.y + (self.height - (child.height or 0)) / 2
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end
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elseif effectiveAlignSelf == AlignSelf.FLEX_END then
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if self.flexDirection == FlexDirection.VERTICAL then
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child.x = self.x + self.width - (child.width or 0)
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else
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child.y = self.y + self.height - (child.height or 0)
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end
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elseif effectiveAlignSelf == AlignSelf.STRETCH then
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if self.flexDirection == FlexDirection.VERTICAL then
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-- Only set width if not already stretched by alignItems
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if child.width ~= self.width then
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child.width = self.width
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end
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else
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-- Only set height if not already stretched by alignItems
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if child.height ~= self.height then
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child.height = self.height
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end
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end
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end
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currentPos = currentPos + (child.height or 0) + self.gap + (self.margin.top or 0) + (self.margin.bottom or 0)
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else
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-- Horizontal layout: position relative to parent origin
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child.x = self.x + currentPos + (self.margin.left or 0)
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child.y = self.y + (self.margin.top or 0)
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-- Apply justifySelf alignment to main axis (for vertical flexDirection, this is y-axis)
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local effectiveJustifySelf = child.justifySelf
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if child.justifySelf == JustifySelf.AUTO then
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effectiveJustifySelf = self.justifyContent
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end
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-- Determine effective alignment - alignSelf takes precedence over alignItems
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local effectiveAlign = child.alignSelf
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if effectiveAlign == AlignSelf.AUTO then
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effectiveAlign = self.alignItems
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end
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if effectiveJustifySelf == JustifySelf.FLEX_START then
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-- Keep the current Y position (already set by spacing logic)
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elseif effectiveJustifySelf == JustifySelf.CENTER then
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-- Center along the main axis (y-axis for vertical flex direction)
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local childHeight = child.height or 0
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local availableSpace = self.height - (self.margin.top or 0) - (self.margin.bottom or 0)
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local totalChildHeight = 0
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for _, c in ipairs(self.children) do
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if c.positioning ~= Positioning.ABSOLUTE then
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totalChildHeight = totalChildHeight + (c.height or 0)
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end
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end
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local freeSpace = availableSpace - totalChildHeight - (self.gap * (#self.children - 1))
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if freeSpace > 0 then
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child.y = self.y + (self.margin.top or 0) + freeSpace / 2
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end
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elseif effectiveJustifySelf == JustifySelf.FLEX_END then
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-- Position at the end of main axis (y-axis for vertical flex direction)
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local childHeight = child.height or 0
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local availableSpace = self.height - (self.margin.top or 0) - (self.margin.bottom or 0)
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local totalChildHeight = 0
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for _, c in ipairs(self.children) do
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if c.positioning ~= Positioning.ABSOLUTE then
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totalChildHeight = totalChildHeight + (c.height or 0)
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end
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end
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local freeSpace = availableSpace - totalChildHeight - (self.gap * (#self.children - 1))
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if freeSpace > 0 then
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child.y = self.y + (self.margin.top or 0) + freeSpace
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end
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elseif effectiveJustifySelf == JustifySelf.SPACE_AROUND then
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-- This would be handled by the justifyContent logic already, so we'll keep existing behavior
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elseif effectiveJustifySelf == JustifySelf.SPACE_EVENLY then
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-- This would be handled by the justifyContent logic already, so we'll keep existing behavior
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elseif effectiveJustifySelf == JustifySelf.SPACE_BETWEEN then
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-- This would be handled by the justifyContent logic already, so we'll keep existing behavior
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end
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-- Apply alignment
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if effectiveAlign == AlignItems.FLEX_START then
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-- Keep the margin.top position (already applied)
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elseif effectiveAlign == AlignItems.CENTER then
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child.y = self.y + (self.height - (child.height or 0)) / 2
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elseif effectiveAlign == AlignItems.FLEX_END then
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child.y = self.y + self.height - (child.height or 0)
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elseif effectiveAlign == AlignItems.STRETCH then
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-- Only set height if not already stretched
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if child.height ~= self.height then
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child.height = self.height
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end
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end
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currentPos = currentPos + (child.height or 0) + self.gap + (self.margin.top or 0) + (self.margin.bottom or 0)
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else
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-- Horizontal layout: position relative to parent origin
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child.x = self.x + currentPos + (self.margin.left or 0)
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child.y = self.y + (self.margin.top or 0)
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currentPos = currentPos + (child.width or 0) + self.gap + (self.margin.left or 0) + (self.margin.right or 0)
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end
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::continue::
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end
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-- Determine effective alignment - alignSelf takes precedence over alignItems
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local effectiveAlign = child.alignSelf
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if effectiveAlign == AlignSelf.AUTO then
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effectiveAlign = self.alignItems
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end
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-- Apply alignment
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if effectiveAlign == AlignItems.FLEX_START then
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-- Keep the margin.top position (already applied)
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elseif effectiveAlign == AlignItems.CENTER then
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child.y = self.y + (self.height - (child.height or 0)) / 2
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elseif effectiveAlign == AlignItems.FLEX_END then
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child.y = self.y + self.height - (child.height or 0)
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elseif effectiveAlign == AlignItems.STRETCH then
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-- Only set height if not already stretched
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if child.height ~= self.height then
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child.height = self.height
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end
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end
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-- Apply justifySelf alignment to main axis (for horizontal flexDirection, this is x-axis)
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local effectiveJustifySelf = child.justifySelf
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if child.justifySelf == JustifySelf.AUTO then
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effectiveJustifySelf = self.justifyContent
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end
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if effectiveJustifySelf == JustifySelf.FLEX_START then
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-- Keep the current X position (already set by spacing logic)
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elseif effectiveJustifySelf == JustifySelf.CENTER then
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-- Center along the main axis (x-axis for horizontal flex direction)
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local childWidth = child.width or 0
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local availableSpace = self.width - (self.margin.left or 0) - (self.margin.right or 0)
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local totalChildWidth = 0
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for _, c in ipairs(self.children) do
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if c.positioning ~= Positioning.ABSOLUTE then
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totalChildWidth = totalChildWidth + (c.width or 0)
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end
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end
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local freeSpace = availableSpace - totalChildWidth - (self.gap * (#self.children - 1))
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if freeSpace > 0 then
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child.x = self.x + (self.margin.left or 0) + freeSpace / 2
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end
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elseif effectiveJustifySelf == JustifySelf.FLEX_END then
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-- Position at the end of main axis (x-axis for horizontal flex direction)
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local childWidth = child.width or 0
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local availableSpace = self.width - (self.margin.left or 0) - (self.margin.right or 0)
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local totalChildWidth = 0
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for _, c in ipairs(self.children) do
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if c.positioning ~= Positioning.ABSOLUTE then
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totalChildWidth = totalChildWidth + (c.width or 0)
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end
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end
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local freeSpace = availableSpace - totalChildWidth - (self.gap * (#self.children - 1))
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if freeSpace > 0 then
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child.x = self.x + (self.margin.left or 0) + freeSpace
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end
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elseif effectiveJustifySelf == JustifySelf.SPACE_AROUND then
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-- This would be handled by the justifyContent logic already, so we'll keep existing behavior
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elseif effectiveJustifySelf == JustifySelf.SPACE_EVENLY then
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-- This would be handled by the justifyContent logic already, so we'll keep existing behavior
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elseif effectiveJustifySelf == JustifySelf.SPACE_BETWEEN then
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-- This would be handled by the justifyContent logic already, so we'll keep existing behavior
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end
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currentPos = currentPos + (child.width or 0) + self.gap + (self.margin.left or 0) + (self.margin.right or 0)
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end
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::continue::
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end
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end
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--- Destroy element and its children
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