74 lines
1.9 KiB
Lua
74 lines
1.9 KiB
Lua
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local Parent = require "birb.modules.gui.elements.parent"
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local CanvasElement = Parent:extend()
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function CanvasElement:new(name, x, y, w, h, r,sx,sy,ox,oy, opacity)
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self:initCanvas()
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CanvasElement.super.new(self, name, x, y, w, h)
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self.r = r or 0
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self.sx, self.sy = sx or 1, sy or 1
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self.ox, self.oy = self:parseOrigin(ox, w), self:parseOrigin(oy, h)
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self.opacity = opacity or 1
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end
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function CanvasElement:initCanvas()
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self.canvas = {}
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self.canvas.needRedraw = true
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self.canvas.texture = nil
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self.canvas.isAnimated = false
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self.canvas.padding = 8
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end
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function CanvasElement:updateElement(dt)
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CanvasElement.super.updateElement(self, dt)
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end
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function CanvasElement:getCanvasDimensions()
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return self:getDimensions()
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end
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function CanvasElement:redraw()
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if (self.canvas.needRedraw or self.canvas.isAnimated) then
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self:generateTexture()
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end
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end
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function CanvasElement:generateTexture()
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local w, h = self:getDimensions()
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local canvas = love.graphics.newCanvas(w + (self.canvas.padding*2), h + (self.canvas.padding*2))
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love.graphics.setCanvas(canvas)
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self:drawTexture()
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self.canvas.needRedraw = false
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love.graphics.setCanvas()
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if (self.canvas.isAnimated) then
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self.canvas.texture = canvas
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else
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local imageData = canvas:newImageData()
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self.canvas.texture = love.graphics.newImage(imageData)
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canvas:release()
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imageData:release()
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end
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end
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function CanvasElement:drawTexture()
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end
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function CanvasElement:parseOrigin(origin, size)
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if (origin == "center") then
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return size/2
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elseif (origin == "end") then
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return size
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else
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return origin or 0
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end
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end
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function CanvasElement:draw()
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love.graphics.setColor(1, 1, 1, self.opacity)
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love.graphics.draw(self.canvas.texture, self.x - self.canvas.padding,self.y - self.canvas.padding,self.r,self.sx,self.sy,self.ox,self.oy)
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love.graphics.setColor(1, 1, 1, 1)
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end
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return CanvasElement
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