vanilla-wow-addons – Blame information for rev 1
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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | office | 1 | --[[ |
| 2 | FlyPaper |
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| 3 | Functionality for sticking one frome to another frame |
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| 4 | |||
| 5 | Methods: |
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| 6 | FlyPaper.Stick(frame, otherFrame, tolerance, xOff, yOff) - Attempts to attach <frame> to <otherFrame> |
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| 7 | tolerance - how close the frames need to be to attach |
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| 8 | xOff - how close, horizontally, the frames should be attached |
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| 9 | yOff - how close, vertically, the frames should be attached |
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| 10 | |||
| 11 | FlyPaper.StickToPoint(frame, otherFrame, point, xOff, yOff) - attempts to anchor <frame> to a specific point on <otherFrame> |
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| 12 | point - any non nil return value of FlyPaper.Stick; |
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| 13 | |||
| 14 | Version History: |
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| 15 | 6.7.19: |
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| 16 | Fixed a bug causing a frame to think it was still stuck to another frame when it really wasn't |
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| 17 | Added FlyPaper.StickToPoint for reloading settings |
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| 18 | --]] |
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| 19 | |||
| 20 | local VERSION = "6.7.19"; |
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| 21 | |||
| 22 | if(FlyPaper and FlyPaper.version >= VERSION) then return; end |
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| 23 | |||
| 24 | --returns true if <frame>, or one of the frames that <frame> is dependent on, is anchored to <otherFrame>. Returns false otherwise. |
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| 25 | local function FrameIsDependentOnFrame(frame, otherFrame) |
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| 26 | if(not (otherFrame and frame) ) then |
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| 27 | return false; |
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| 28 | end |
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| 29 | if(frame == otherFrame) then |
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| 30 | return true; |
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| 31 | end |
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| 32 | |||
| 33 | local parent = frame.stuckTo; |
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| 34 | while parent do |
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| 35 | if(parent == otherFrame) then |
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| 36 | return true; |
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| 37 | end |
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| 38 | parent = parent.stuckTo; |
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| 39 | end |
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| 40 | return false |
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| 41 | end |
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| 42 | |||
| 43 | --returns true if its actually possible to attach the two frames without error |
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| 44 | local function CanAttach(frame, otherFrame) |
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| 45 | if( not (frame and otherFrame) ) then |
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| 46 | return false; |
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| 47 | elseif(frame:GetNumPoints() == 0 or otherFrame:GetNumPoints() == 0 ) then |
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| 48 | return false; |
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| 49 | elseif(frame:GetWidth() == 0 or frame:GetHeight() == 0 or otherFrame:GetWidth() == 0 or otherFrame:GetHeight() == 0) then |
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| 50 | return false; |
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| 51 | elseif( FrameIsDependentOnFrame(otherFrame, frame) ) then |
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| 52 | return false; |
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| 53 | end |
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| 54 | return true; |
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| 55 | end |
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| 56 | |||
| 57 | --[[ Attachment Functions ]]-- |
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| 58 | local function AttachToTop(frame, otherFrame, distLeft, distRight, distCenter, offset) |
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| 59 | frame:ClearAllPoints(); |
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| 60 | --closest to the left |
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| 61 | if(distLeft < distCenter and distLeft < distRight) then |
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| 62 | frame:SetPoint("BOTTOMLEFT", otherFrame, "TOPLEFT", 0, offset); |
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| 63 | return "TL"; |
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| 64 | --closest to the right |
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| 65 | elseif(distRight < distCenter and distRight < distLeft ) then |
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| 66 | frame:SetPoint("BOTTOMRIGHT", otherFrame, "TOPRIGHT", 0, offset); |
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| 67 | return "TR"; |
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| 68 | --closest to the center |
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| 69 | else |
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| 70 | frame:SetPoint("BOTTOM", otherFrame, "TOP", 0, offset); |
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| 71 | return "TC"; |
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| 72 | end |
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| 73 | end |
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| 74 | |||
| 75 | local function AttachToBottom(frame, otherFrame, distLeft, distRight, distCenter, offset) |
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| 76 | frame:ClearAllPoints(); |
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| 77 | --bottomleft |
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| 78 | if(distLeft < distCenter and distLeft < distRight) then |
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| 79 | frame:SetPoint("TOPLEFT", otherFrame, "BOTTOMLEFT", 0, -offset); |
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| 80 | return "BL"; |
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| 81 | --bottomright |
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| 82 | elseif(distRight < distCenter and distRight < distLeft) then |
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| 83 | frame:SetPoint("TOPRIGHT", otherFrame, "BOTTOMRIGHT", 0, -offset); |
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| 84 | return "BR"; |
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| 85 | --bottom |
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| 86 | else |
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| 87 | frame:SetPoint("TOP", otherFrame, "BOTTOM", 0, -offset); |
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| 88 | return "BC"; |
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| 89 | end |
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| 90 | end |
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| 91 | |||
| 92 | local function AttachToLeft(frame, otherFrame, distTop, distBottom, distCenter, offset) |
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| 93 | frame:ClearAllPoints(); |
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| 94 | --bottomleft |
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| 95 | if(distBottom < distTop and distBottom < distCenter) then |
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| 96 | frame:SetPoint("BOTTOMRIGHT", otherFrame, "BOTTOMLEFT", -offset, 0); |
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| 97 | return "LB"; |
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| 98 | --topleft |
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| 99 | elseif(distTop < distBottom and distTop < distCenter) then |
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| 100 | frame:SetPoint("TOPRIGHT", otherFrame, "TOPLEFT", -offset, 0); |
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| 101 | return "LT"; |
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| 102 | --left |
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| 103 | else |
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| 104 | frame:SetPoint("RIGHT", otherFrame, "LEFT", -offset, 0); |
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| 105 | return "LC"; |
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| 106 | end |
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| 107 | end |
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| 108 | |||
| 109 | local function AttachToRight(frame, otherFrame, distTop, distBottom, distCenter, offset) |
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| 110 | frame:ClearAllPoints(); |
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| 111 | --bottomright |
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| 112 | if(distBottom < distTop and distBottom < distCenter) then |
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| 113 | frame:SetPoint("BOTTOMLEFT", otherFrame, "BOTTOMRIGHT", offset, 0); |
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| 114 | return "RB"; |
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| 115 | --topright |
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| 116 | elseif(distTop < distBottom and distTop < distCenter) then |
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| 117 | frame:SetPoint("TOPLEFT", otherFrame, "TOPRIGHT", offset, 0); |
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| 118 | return "RT"; |
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| 119 | --right |
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| 120 | else |
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| 121 | frame:SetPoint("LEFT", otherFrame, "RIGHT", offset, 0); |
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| 122 | return "RC"; |
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| 123 | end |
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| 124 | end |
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| 125 | |||
| 126 | --[[ Usable Functions ]]-- |
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| 127 | |||
| 128 | FlyPaper = { |
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| 129 | version = VERSION, |
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| 130 | |||
| 131 | Stick = function(frame, otherFrame, tolerance, xOff, yOff) |
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| 132 | if(not xOff) then |
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| 133 | xOff = 0; |
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| 134 | end |
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| 135 | if(not yOff) then |
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| 136 | yOff = 0; |
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| 137 | end |
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| 138 | |||
| 139 | if(not CanAttach(frame, otherFrame) ) then |
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| 140 | if(frame) then |
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| 141 | frame.stuckTo = nil; |
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| 142 | end |
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| 143 | return false; |
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| 144 | end |
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| 145 | |||
| 146 | --get anchoring points |
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| 147 | local left = frame:GetLeft(); |
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| 148 | local right = frame:GetRight(); |
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| 149 | local top = frame:GetTop(); |
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| 150 | local bottom = frame:GetBottom(); |
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| 151 | local centerX, centerY = frame:GetCenter(); |
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| 152 | |||
| 153 | if(left and right and top and bottom and centerX) then |
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| 154 | local oScale = otherFrame:GetScale(); |
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| 155 | left = left / oScale; |
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| 156 | right = right / oScale; |
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| 157 | top = top / oScale; |
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| 158 | bottom = bottom /oScale; |
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| 159 | centerX = centerX / oScale; |
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| 160 | centerY = centerY / oScale; |
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| 161 | else |
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| 162 | frame.stuckTo = nil; |
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| 163 | return false; |
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| 164 | end |
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| 165 | |||
| 166 | local oLeft = otherFrame:GetLeft(); |
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| 167 | local oRight = otherFrame:GetRight(); |
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| 168 | local oTop = otherFrame:GetTop(); |
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| 169 | local oBottom = otherFrame:GetBottom(); |
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| 170 | local oCenterX, oCenterY = otherFrame:GetCenter(); |
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| 171 | |||
| 172 | if(oLeft and oRight and oTop and oBottom and oCenterX) then |
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| 173 | local scale = frame:GetScale(); |
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| 174 | oCenterX = oCenterX / scale; |
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| 175 | oCenterY = oCenterY / scale; |
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| 176 | oLeft = oLeft / scale; |
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| 177 | oRight = oRight / scale; |
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| 178 | oTop = oTop / scale; |
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| 179 | oBottom = oBottom / scale; |
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| 180 | else |
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| 181 | frame.stuckTo = nil; |
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| 182 | return false; |
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| 183 | end |
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| 184 | |||
| 185 | --[[ Start Attempting to Anchor <frame> to <otherFrame> ]]-- |
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| 186 | |||
| 187 | if( (oLeft - tolerance <= left and oRight + tolerance >= right) or |
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| 188 | (left - tolerance <= oLeft and right + tolerance >= oRight) ) then |
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| 189 | |||
| 190 | local distCenter = math.abs(oCenterX - centerX); |
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| 191 | local distLeft = math.abs(oLeft - left); |
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| 192 | local distRight = math.abs(right - oRight); |
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| 193 | |||
| 194 | --try to stick to the top if the distance is under the threshold distance to stick frames to each other (tolerance) |
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| 195 | if( math.abs(oTop - bottom) <= tolerance ) then |
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| 196 | local point = AttachToTop(frame, otherFrame, distLeft, distRight, distCenter, yOff); |
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| 197 | frame.stuckTo = otherFrame; |
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| 198 | return point; |
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| 199 | --to the bottom |
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| 200 | elseif( math.abs(oBottom - top) <= tolerance ) then |
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| 201 | local point = AttachToBottom(frame, otherFrame, distLeft, distRight, distCenter, yOff); |
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| 202 | frame.stuckTo = otherFrame; |
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| 203 | return point; |
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| 204 | end |
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| 205 | end |
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| 206 | |||
| 207 | |||
| 208 | if ( (oTop + tolerance >= top and oBottom - tolerance <= bottom) or |
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| 209 | (top + tolerance >= oTop and bottom - tolerance <= oBottom) ) then |
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| 210 | |||
| 211 | local distCenter = math.abs(oCenterY - centerY); |
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| 212 | local distTop = math.abs(oTop - top); |
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| 213 | local distBottom = math.abs(oBottom - bottom); |
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| 214 | |||
| 215 | --to the left |
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| 216 | if(math.abs(oLeft - right) <= tolerance ) then |
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| 217 | local point = AttachToLeft(frame, otherFrame, distTop, distBottom, distCenter, xOff); |
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| 218 | frame.stuckTo = otherFrame; |
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| 219 | return point; |
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| 220 | end |
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| 221 | |||
| 222 | --to the right |
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| 223 | if(math.abs(oRight - left) <= tolerance ) then |
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| 224 | local point = AttachToRight(frame, otherFrame, distTop, distBottom, distCenter, xOff); |
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| 225 | frame.stuckTo = otherFrame; |
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| 226 | return point; |
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| 227 | end |
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| 228 | end |
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| 229 | |||
| 230 | frame.stuckTo = nil; |
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| 231 | return false; |
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| 232 | end, |
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| 233 | |||
| 234 | StickToPoint = function(frame, otherFrame, point, xOff, yOff) |
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| 235 | if(not xOff) then |
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| 236 | xOff = 0; |
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| 237 | end |
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| 238 | if(not yOff) then |
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| 239 | yOff = 0; |
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| 240 | end |
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| 241 | |||
| 242 | --[[ Check to make sure we can anchor ]]-- |
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| 243 | |||
| 244 | --check to make sure its actually possible to attach the frames |
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| 245 | if(not (point and CanAttach(frame, otherFrame)) ) then |
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| 246 | if(frame) then |
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| 247 | frame.stuckTo = nil; |
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| 248 | end |
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| 249 | return nil; |
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| 250 | end |
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| 251 | |||
| 252 | --check to make sure all anchoring points are valid |
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| 253 | local left = frame:GetLeft(); |
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| 254 | local right = frame:GetRight(); |
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| 255 | local top = frame:GetTop(); |
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| 256 | local bottom = frame:GetBottom(); |
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| 257 | local centerX = frame:GetCenter(); |
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| 258 | |||
| 259 | if( not (left and right and top and bottom and centerX) ) then |
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| 260 | frame.stuckTo = nil; |
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| 261 | return nil; |
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| 262 | end |
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| 263 | |||
| 264 | local oLeft = otherFrame:GetLeft(); |
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| 265 | local oRight = otherFrame:GetRight(); |
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| 266 | local oTop = otherFrame:GetTop(); |
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| 267 | local oBottom = otherFrame:GetBottom(); |
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| 268 | local oCenterX = otherFrame:GetCenter(); |
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| 269 | |||
| 270 | if(not (oLeft and oRight and oTop and oBottom and oCenterX) ) then |
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| 271 | frame.stuckTo = nil; |
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| 272 | return nil; |
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| 273 | end |
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| 274 | |||
| 275 | --[[ Start Attempting to Anchor <frame> to <otherFrame> ]]-- |
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| 276 | |||
| 277 | frame:ClearAllPoints(); |
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| 278 | |||
| 279 | if( point == "TL" ) then |
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| 280 | frame:SetPoint("BOTTOMLEFT", otherFrame, "TOPLEFT", 0, yOff); |
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| 281 | frame.stuckTo = otherFrame; |
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| 282 | return point; |
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| 283 | elseif(point == "TC") then |
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| 284 | frame:SetPoint("BOTTOM", otherFrame, "TOP", 0, yOff); |
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| 285 | frame.stuckTo = otherFrame; |
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| 286 | return point; |
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| 287 | elseif(point == "TR") then |
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| 288 | frame:SetPoint("BOTTOMRIGHT", otherFrame, "TOPRIGHT", 0, yOff); |
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| 289 | frame.stuckTo = otherFrame; |
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| 290 | return point; |
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| 291 | end |
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| 292 | |||
| 293 | if( point == "BL" ) then |
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| 294 | frame:SetPoint("TOPLEFT", otherFrame, "BOTTOMLEFT", 0, -yOff); |
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| 295 | frame.stuckTo = otherFrame; |
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| 296 | return point; |
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| 297 | elseif(point == "BC") then |
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| 298 | frame:SetPoint("TOP", otherFrame, "BOTTOM", 0, -yOff); |
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| 299 | frame.stuckTo = otherFrame; |
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| 300 | return point; |
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| 301 | elseif(point == "BR") then |
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| 302 | frame:SetPoint("TOPRIGHT", otherFrame, "BOTTOMRIGHT", 0, -yOff); |
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| 303 | frame.stuckTo = otherFrame; |
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| 304 | return point; |
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| 305 | end |
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| 306 | |||
| 307 | --to the left |
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| 308 | if( point == "LB" ) then |
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| 309 | frame:SetPoint("BOTTOMRIGHT", otherFrame, "BOTTOMLEFT", -xOff, 0); |
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| 310 | frame.stuckTo = otherFrame; |
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| 311 | return point; |
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| 312 | elseif(point == "LC") then |
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| 313 | frame:SetPoint("RIGHT", otherFrame, "LEFT", -xOff, 0); |
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| 314 | frame.stuckTo = otherFrame; |
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| 315 | return point; |
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| 316 | elseif(point == "LT") then |
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| 317 | frame:SetPoint("TOPRIGHT", otherFrame, "TOPLEFT", -xOff, 0); |
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| 318 | frame.stuckTo = otherFrame; |
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| 319 | return point; |
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| 320 | end |
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| 321 | |||
| 322 | --to the right |
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| 323 | if( point == "RB" ) then |
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| 324 | frame:SetPoint("BOTTOMLEFT", otherFrame, "BOTTOMRIGHT", xOff, 0); |
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| 325 | frame.stuckTo = otherFrame; |
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| 326 | return point; |
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| 327 | elseif(point == "RC") then |
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| 328 | frame:SetPoint("LEFT", otherFrame, "RIGHT", xOff, 0); |
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| 329 | frame.stuckTo = otherFrame; |
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| 330 | return point; |
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| 331 | elseif(point == "RT") then |
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| 332 | frame:SetPoint("TOPLEFT", otherFrame, "TOPRIGHT", xOff, 0); |
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| 333 | frame.stuckTo = otherFrame; |
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| 334 | return point; |
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| 335 | end |
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| 336 | |||
| 337 | frame.stuckTo = nil; |
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| 338 | return nil; |
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| 339 | end, |
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| 340 | } |