add dedicated backend (WIP)

luigi/backend/love.lua

@@ -0,0 +1,133 @@
+local ROOT = (...):gsub('[^.]*.[^.]*$', '')
+
+local Base = require(ROOT .. 'base')
+local Hooker = require(ROOT .. 'hooker')
+
+local Backend = {}
+
+Backend.run = function () end
+
+Backend.Cursor = love.mouse.newCursor
+
+Backend.Font = require(ROOT .. 'backend.love.font')
+
+Backend.Image = love.graphics.newImage
+
+Backend.Quad = love.graphics.newQuad
+
+Backend.SpriteBatch = love.graphics.newSpriteBatch
+
+Backend.draw = love.graphics.draw
+
+Backend.drawRectangle = love.graphics.rectangle
+
+Backend.print = love.graphics.print
+
+Backend.printf = love.graphics.printf
+
+Backend.getClipboardText = love.system.getClipboardText
+
+Backend.setClipboardText = love.system.setClipboardText
+
+Backend.getMousePosition = love.mouse.getPosition
+
+Backend.getMousePosition = love.mouse.getPosition
+
+Backend.getSystemCursor = love.mouse.getSystemCursor
+
+Backend.getWindowSize = function ()
+    return love.graphics.getWidth(), love.graphics.getHeight()
+end
+
+Backend.getTime = love.timer.getTime
+
+Backend.isKeyDown = love.keyboard.isDown
+
+Backend.isMouseDown = love.mouse.isDown
+
+Backend.pop = love.graphics.pop
+
+local push = love.graphics.push
+
+Backend.push = function ()
+     return push 'all'
+end
+
+Backend.quit = love.event.quit
+
+Backend.setColor = love.graphics.setColor
+
+Backend.setCursor = love.mouse.setCursor
+
+Backend.setFont = function (font)
+    return love.graphics.setFont(font.loveFont)
+end
+
+Backend.setScissor = love.graphics.setScissor
+
+function Backend.hide (layout)
+    for _, item in ipairs(layout.hooks) do
+        Hooker.unhook(item)
+    end
+    layout.hooks = {}
+end
+
+local function hook (layout, key, method, hookLast)
+    layout.hooks[#layout.hooks + 1] = Hooker.hook(love, key, method, hookLast)
+end
+
+local getMouseButtonId, isMouseDown
+
+if love._version_minor < 10 then
+    getMouseButtonId = function (value)
+        return value == 'l' and 1
+            or value == 'r' and 2
+            or value == 'm' and 3
+    end
+    isMouseDown = function ()
+        return love.mouse.isDown('l', 'r', 'm')
+    end
+else
+    getMouseButtonId = function (value)
+        return value
+    end
+    isMouseDown = function ()
+        return love.mouse.isDown(1, 2, 3)
+    end
+end
+
+function Backend.show (layout)
+
+    local input = layout.input
+
+    hook(layout, 'draw', function ()
+        input:handleDisplay(layout)
+    end, true)
+    hook(layout, 'resize', function (width, height)
+        return input:handleReshape(layout, width, height)
+    end)
+    hook(layout, 'mousepressed', function (x, y, button)
+        return input:handlePressStart(layout, getMouseButtonId(button), x, y)
+    end)
+    hook(layout, 'mousereleased', function (x, y, button)
+        return input:handlePressEnd(layout, getMouseButtonId(button), x, y)
+    end)
+    hook(layout, 'mousemoved', function (x, y, dx, dy)
+        if isMouseDown() then
+            return input:handlePressedMove(layout, x, y)
+        else
+            return input:handleMove(layout, x, y)
+        end
+    end)
+    hook(layout, 'keypressed', function (key, isRepeat)
+        return input:handleKeyPress(layout, key, Backend.getMousePosition())
+    end)
+    hook(layout, 'keyreleased', function (key)
+        return input:handleKeyRelease(layout, key, Backend.getMousePosition())
+    end)
+    hook(layout, 'textinput', function (text)
+        return input:handleTextInput(layout, text, Backend.getMousePosition())
+    end)
+end
+
+return Backend