Text widget: intersect scissor.

Fixes a visual bug where text would display outside widget boundary.
Mved intersectScissor to Backend.

luigi/backend.lua

@@ -1,8 +1,27 @@
 local ROOT = (...):gsub('[^.]*$', '')
+local Backend
 
 if _G.love and _G.love._version_minor > 8 then
-    return require(ROOT .. 'backend.love')
+    Backend = require(ROOT .. 'backend.love')
 else
-    return require(ROOT .. 'backend.ffisdl')
+    Backend = require(ROOT .. 'backend.ffisdl')
 end
 
+Backend.intersectScissor = Backend.intersectScissor or function (x, y, w, h)
+    local sx, sy, sw, sh = Backend.getScissor()
+    if not sx then
+        return Backend.setScissor(x, y, w, h)
+    end
+    local x1 = math.max(sx, x)
+    local y1 = math.max(sy, y)
+    local x2 = math.min(sx + sw, x + w)
+    local y2 = math.min(sy + sh, y + h)
+    if x2 > x1 and y2 > y1 then
+        Backend.setScissor(x1, y1, x2 - x1, y2 - y1)
+    else
+        -- HACK
+        Backend.setScissor(-100, -100, 1, 1)
+    end
+end
+
+return Backend

luigi/backend/love.lua

@@ -43,7 +43,7 @@ Backend.setClipboardText = love.system.setClipboardText
 
 Backend.getMousePosition = love.mouse.getPosition
 
-Backend.getMousePosition = love.mouse.getPosition
+Backend.setMousePosition = love.mouse.setPosition
 
 Backend.getSystemCursor = love.mouse.getSystemCursor
 
@@ -79,6 +79,8 @@ Backend.setScissor = love.graphics.setScissor
 
 Backend.getScissor = love.graphics.getScissor
 
+Backend.intersectScissor = love.graphics.intersectScissor
+
 function Backend.hide (layout)
     for _, item in ipairs(layout.hooks) do
         Hooker.unhook(item)

luigi/painter.lua

@@ -11,23 +11,6 @@ local Painter = Base:extend()
 local imageCache = {}
 -- local sliceCache = {}
 
-local function intersectScissor (x, y, w, h)
-    local sx, sy, sw, sh = Backend.getScissor()
-    if not sx then
-        return Backend.setScissor(x, y, w, h)
-    end
-    local x1 = math.max(sx, x)
-    local y1 = math.max(sy, y)
-    local x2 = math.min(sx + sw, x + w)
-    local y2 = math.min(sy + sh, y + h)
-    if x2 > x1 and y2 > y1 then
-        Backend.setScissor(x1, y1, x2 - x1, y2 - y1)
-    else
-        -- HACK
-        Backend.setScissor(-100, -100, 1, 1)
-    end
-end
-
 function Painter:constructor (widget)
     self.widget = widget
 end
@@ -198,7 +181,7 @@ function Painter:paintIconAndText ()
 
     Backend.push()
 
-    intersectScissor(x, y, w, h)
+    Backend.intersectScissor(x, y, w, h)
 
     -- draw the icon
     if icon then
@@ -237,7 +220,7 @@ function Painter:paint ()
         Backend.push()
 
         if widget.parent then
-            intersectScissor(x, y, w, h)
+            Backend.intersectScissor(x, y, w, h)
         else
             Backend.setScissor()
         end

luigi/widget/text.lua

@@ -410,7 +410,7 @@ This color is used to indicate the selected range of text.
         local textTop = math.floor(y + (h - font:getLineHeight()) / 2)
 
         Backend.push()
-        Backend.setScissor(x, y, w, h)
+        Backend.intersectScissor(x, y, w, h)
         Backend.setFont(font)
 
         if self.focused then