112 lines
3.0 KiB
Plaintext
112 lines
3.0 KiB
Plaintext
compute_layout = function(node, x,y, nodes_to_render)
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--[[ --debug prints when modifying the DOM
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if node.type == 'rows' or node.type == 'cols' then
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print(node.type, node.button, #node.data)
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else
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print(node.type, node.button)
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end
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--]]
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-- append to nodes_to_render flattened instructions to render a hierarchy of nodes
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-- return x,y rendered until (surface coordinates)
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if node.type == 'text' then
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-- leaf node containing raw text
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node.x = x
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node.y = y
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-- render background if necessary
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local pending_nodes = {}
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if node.bg then
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local n = {type='rectangle', drawmode='fill', r=node.bg.r, g=node.bg.g, b=node.bg.b, x=node.x-5, y=node.y-5, rx=node.rx, ry=node.ry}
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table.insert(pending_nodes, n)
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table.insert(nodes_to_render, n)
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end
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-- render border if necessary
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if node.border then
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local n = {type='rectangle', drawmode='line', r=node.border.r, g=node.border.g, b=node.border.b, x=node.x-5, y=node.y-5, rx=node.rx, ry=node.ry}
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table.insert(pending_nodes, n)
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table.insert(nodes_to_render, n)
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end
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-- render contents
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if node.width then
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node.w = node.width
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else
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node.w = 0
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for i,line in ipairs(node.data) do
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local width = love.graphics.getFont():getWidth(line.data)/Viewport.zoom
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if node.w < width then node.w = width end
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end
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end
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if node.editor == nil then
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initialize_editor(node)
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else
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update_editor_box(node)
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end
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node.h = box_height(node)
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table.insert(nodes_to_render, node)
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for _,n in ipairs(pending_nodes) do
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n.w = node.w+10
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n.h = node.h+10
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end
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elseif node.type == 'rows' then
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node.x = x
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node.y = y
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local node_to_render
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if node.bg then
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node_to_render = {type='rectangle', r=node.bg.r, g=node.bg.g, b=node.bg.b, x=node.x, y=node.y}
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table.insert(nodes_to_render, node_to_render)
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end
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-- lay out children top to bottom
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local subx,suby = x,y
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local w,h = 0,0
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local subnodes
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for _,child in ipairs(node.data) do
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if child.margin then
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suby = suby+child.margin
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h = h+child.margin
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end
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if not child.width then
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child.width = node.width -- HACK: should we set child.w or child.width? Neither is quite satisfactory.
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end
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subx,suby = compute_layout(child, x,suby, nodes_to_render)
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if w < child.w then
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w = child.w
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end
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h = h+child.h
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end
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node.w = w
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node.h = h
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if node_to_render then
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node_to_render.w = w
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node_to_render.h = h
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end
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elseif node.type == 'cols' then
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node.x = x
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node.y = y
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-- lay out children left to right
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local node_to_render
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if node.bg then
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node_to_render = {type='rectangle', r=node.bg.r, g=node.bg.g, b=node.bg.b, x=node.x, y=node.y}
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table.insert(nodes_to_render, node_to_render)
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end
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local subx,suby = x,y
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local w,h = 0,0
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for _,child in ipairs(node.data) do
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if child.margin then
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subx = subx+child.margin
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w = w+child.margin
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end
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subx,suby = compute_layout(child, subx,y, nodes_to_render)
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w = w + child.w
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if h < child.h then
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h = child.h
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end
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end
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node.w = w
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node.h = h
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if node_to_render then
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node_to_render.w = w
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node_to_render.h = h
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end
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end
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return x+node.w,y+node.h
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end
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