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https://github.com/brues-code/pfUI.git
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api: simplify AlignToPosition, SetAutoPoint, GetBestAnchor and ConvertFrameAnchor
AlignToPosition reads its corner pairs from a table. SetAutoPoint and GetBestAnchor share one 3x3 screen-grid helper, which also gives an anchor to frames centered exactly on a grid line. ConvertFrameAnchor resolves the x and y offsets independently.
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Brues
+59
-118
@@ -784,25 +784,40 @@ end
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-- 'anchor' [frame] the frame where it should be aligned to
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-- 'position' [string] where it should appear, takes the following:
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-- "TOP", "RIGHT", "BOTTOM", "LEFT"
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local alignments = {
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-- frame corners anchor corners spacing x/y
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TOP = { "BOTTOMLEFT", "BOTTOMRIGHT", "TOPLEFT", "TOPRIGHT", 0, 1 },
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RIGHT = { "TOPLEFT", "BOTTOMLEFT", "TOPRIGHT", "BOTTOMRIGHT", 1, 0 },
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BOTTOM = { "TOPLEFT", "TOPRIGHT", "BOTTOMLEFT", "BOTTOMRIGHT", 0, -1 },
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LEFT = { "TOPRIGHT", "BOTTOMRIGHT", "TOPLEFT", "BOTTOMLEFT", -1, 0 },
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}
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function pfUI.api.AlignToPosition(frame, anchor, position, spacing)
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if frame == anchor then return end
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frame:ClearAllPoints()
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if position == "TOP" and anchor then
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frame:SetPoint("BOTTOMLEFT", anchor, "TOPLEFT", 0, (spacing or 0))
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frame:SetPoint("BOTTOMRIGHT", anchor, "TOPRIGHT", 0, (spacing or 0))
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elseif position == "RIGHT" and anchor then
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frame:SetPoint("TOPLEFT", anchor, "TOPRIGHT", (spacing or 0), 0)
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frame:SetPoint("BOTTOMLEFT", anchor, "BOTTOMRIGHT", (spacing or 0), 0)
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elseif position == "BOTTOM" and anchor then
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frame:SetPoint("TOPLEFT", anchor, "BOTTOMLEFT", 0, -(spacing or 0))
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frame:SetPoint("TOPRIGHT", anchor, "BOTTOMRIGHT", 0, -(spacing or 0))
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elseif position == "LEFT" and anchor then
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frame:SetPoint("TOPRIGHT", anchor, "TOPLEFT", -(spacing or 0), 0)
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frame:SetPoint("BOTTOMRIGHT", anchor, "BOTTOMLEFT", -(spacing or 0), 0)
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else
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frame:SetPoint("TOPRIGHT", UIParent, "TOPRIGHT", 0, 0)
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frame:SetPoint("BOTTOMRIGHT", UIParent, "BOTTOMRIGHT", 0, 0)
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local align = anchor and alignments[position]
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if not align then
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-- no usable anchor: stretch along the right screen edge
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frame:SetPoint("TOPRIGHT", UIParent, "TOPRIGHT")
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frame:SetPoint("BOTTOMRIGHT", UIParent, "BOTTOMRIGHT")
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return
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end
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local point1, point2, rel1, rel2, dx, dy = unpack(align)
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local x, y = dx * (spacing or 0), dy * (spacing or 0)
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frame:SetPoint(point1, anchor, rel1, x, y)
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frame:SetPoint(point2, anchor, rel2, x, y)
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end
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-- Splits the screen into a 3x3 grid and returns the cell that (x, y) falls in
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-- as a row ("TOP", "" or "BOTTOM") and a column ("LEFT", "" or "RIGHT").
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local function GetScreenCell(x, y, scale)
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local w = GetScreenWidth() / scale / 3
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local h = GetScreenHeight() / scale / 3
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local row = y > 2 * h and "TOP" or y < h and "BOTTOM" or ""
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local col = x < w and "LEFT" or x > 2 * w and "RIGHT" or ""
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return row, col
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end
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-- [ SetAutoPoint ]
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@@ -812,67 +827,22 @@ end
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-- 'spacing' [number] the padding that should be used between the
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-- frame and its parent frame
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function pfUI.api.SetAutoPoint(frame, parent, spacing)
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--[[
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a b max
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+-----------------+
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| 1 | 2 | 3 |
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|-----+-----+-----| c
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| 4 | 5 | 6 |
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|-----+-----+-----| d
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| 7 | 8 | 9 |
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+-----------------+
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0
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]]--
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local a = GetScreenWidth() / 3
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local b = GetScreenWidth() / 3 * 2
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local c = GetScreenHeight() / 3 * 2
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local d = GetScreenHeight() / 3
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local x, y = parent:GetCenter()
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if not x then return end
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if not x or not y then return end
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-- open the frame toward the screen center
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local row, col = GetScreenCell(x, y, 1)
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local off = spacing or 0
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frame:ClearAllPoints()
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if x < a and y > c then
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-- TOPLEFT
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frame:SetPoint("TOPLEFT", parent, "BOTTOMLEFT", 0, -off)
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elseif x > a and x < b and y > c then
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-- TOP
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frame:SetPoint("TOP", parent, "BOTTOM", 0, -off)
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elseif x > b and y > c then
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-- TOPRIGHT
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frame:SetPoint("TOPRIGHT", parent, "BOTTOMRIGHT", 0, -off)
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elseif x < a and y > d and y < c then
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-- LEFT
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if row == "TOP" then
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frame:SetPoint("TOP" .. col, parent, "BOTTOM" .. col, 0, -off)
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elseif row == "" and col == "LEFT" then
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frame:SetPoint("LEFT", parent, "RIGHT", off, 0)
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elseif x > a and x < b and y > d and y < c then
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-- CENTER
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frame:SetPoint("BOTTOM", parent, "TOP", 0, off)
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elseif x > b and y > d and y < c then
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-- RIGHT
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elseif row == "" and col == "RIGHT" then
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frame:SetPoint("RIGHT", parent, "LEFT", -off, 0)
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elseif x < a and y < d then
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-- BOTTOMLEFT
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frame:SetPoint("BOTTOMLEFT", parent, "TOPLEFT", 0, off)
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elseif x > a and x < b and y < d then
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-- BOTTOM
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frame:SetPoint("BOTTOM", parent, "TOP", 0, off)
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elseif x > b and y < d then
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-- BOTTOMRIGHT
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frame:SetPoint("BOTTOMRIGHT", parent, "TOPRIGHT", 0, off)
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else
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frame:SetPoint("BOTTOM" .. col, parent, "TOP" .. col, 0, off)
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end
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end
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@@ -881,33 +851,12 @@ end
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-- 'self' [frame] the frame that should be checked
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-- returns: [string] the name of the best anchor
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function pfUI.api.GetBestAnchor(self)
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local scale = self:GetScale()
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local x, y = self:GetCenter()
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local a = GetScreenWidth() / scale / 3
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local b = GetScreenWidth() / scale / 3 * 2
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local c = GetScreenHeight() / scale / 3 * 2
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local d = GetScreenHeight() / scale / 3
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if not x or not y then return end
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if not x then return end
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if x < a and y > c then
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return "TOPLEFT"
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elseif x > a and x < b and y > c then
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return "TOP"
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elseif x > b and y > c then
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return "TOPRIGHT"
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elseif x < a and y > d and y < c then
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return "LEFT"
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elseif x > a and x < b and y > d and y < c then
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return "CENTER"
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elseif x > b and y > d and y < c then
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return "RIGHT"
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elseif x < a and y < d then
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return "BOTTOMLEFT"
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elseif x > a and x < b and y < d then
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return "BOTTOM"
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elseif x > b and y < d then
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return "BOTTOMRIGHT"
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end
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local row, col = GetScreenCell(x, y, self:GetScale())
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local anchor = row .. col
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return anchor ~= "" and anchor or "CENTER"
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end
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-- [ ConvertFrameAnchor ]
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@@ -916,31 +865,23 @@ end
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-- 'anchor' [string] the new anchor that shall be used
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-- returns: anchor, x, y can directly be used in SetPoint()
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function pfUI.api.ConvertFrameAnchor(self, anchor)
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local scale, x, y, _ = self:GetScale(), nil, nil, nil
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local scale = self:GetScale()
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local w, h = GetScreenWidth() / scale, GetScreenHeight() / scale
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if anchor == "CENTER" then
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x, y = self:GetCenter()
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x, y = x - GetScreenWidth()/2/scale, y - GetScreenHeight()/2/scale
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elseif anchor == "TOPLEFT" then
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x, y = self:GetLeft(), self:GetTop() - GetScreenHeight()/scale
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elseif anchor == "TOP" then
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x, _ = self:GetCenter()
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x, y = x - GetScreenWidth()/2/scale, self:GetTop() - GetScreenHeight()/scale
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elseif anchor == "TOPRIGHT" then
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x, y = self:GetRight() - GetScreenWidth()/scale, self:GetTop() - GetScreenHeight()/scale
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elseif anchor == "RIGHT" then
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_, y = self:GetCenter()
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x, y = self:GetRight() - GetScreenWidth()/scale, y - GetScreenHeight()/2/scale
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elseif anchor == "BOTTOMRIGHT" then
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x, y = self:GetRight() - GetScreenWidth()/scale, self:GetBottom()
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elseif anchor == "BOTTOM" then
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x, _ = self:GetCenter()
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x, y = x - GetScreenWidth()/2/scale, self:GetBottom()
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elseif anchor == "BOTTOMLEFT" then
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x, y = self:GetLeft(), self:GetBottom()
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elseif anchor == "LEFT" then
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_, y = self:GetCenter()
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x, y = self:GetLeft(), y - GetScreenHeight()/2/scale
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-- offsets from the matching point of the screen, axis by axis
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local x, y = self:GetCenter()
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x, y = x - w / 2, y - h / 2
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if anchor:find("LEFT") then
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x = self:GetLeft()
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elseif anchor:find("RIGHT") then
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x = self:GetRight() - w
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end
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if anchor:find("TOP") then
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y = self:GetTop() - h
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elseif anchor:find("BOTTOM") then
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y = self:GetBottom()
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end
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return anchor, round(x, 2), round(y, 2)
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