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62 lines
1.4 KiB
Lua
62 lines
1.4 KiB
Lua
local Mupdf = require("ffi/mupdf")
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local CanvasContext = {
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should_restrict_JIT = false,
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is_color_rendering_enabled = false,
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is_bgr = false,
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}
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--[[
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Initialize CanvasContext with settings from device.
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The following key is required for a device object:
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* should_restrict_JIT: bool
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* hasBGRFrameBuffer: function() -> boolean
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* screen: object with following methods:
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* getWidth() -> int
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* getHeight() -> int
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* getDPI() -> int
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* getSize() -> Rect
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* scaleBySize(int) -> int
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]]--
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function CanvasContext:init(device)
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self.screen = device.screen
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self.isAndroid = device.isAndroid
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self.isKindle = device.isKindle
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self.should_restrict_JIT = device.should_restrict_JIT
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-- NOTE: Kobo's fb is BGR, not RGB. Handle the conversion in MuPDF if needed.
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if device:hasBGRFrameBuffer() then
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self.is_bgr = true
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Mupdf.bgr = true
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end
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end
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function CanvasContext:setColorRenderingEnabled(val)
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self.is_color_rendering_enabled = val
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end
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function CanvasContext:getWidth()
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return self.screen:getWidth()
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end
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function CanvasContext:getHeight()
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return self.screen:getHeight()
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end
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function CanvasContext:getDPI()
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return self.screen:getDPI()
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end
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function CanvasContext:getSize()
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return self.screen:getSize()
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end
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function CanvasContext:scaleBySize(px)
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return self.screen:scaleBySize(px)
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end
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return CanvasContext
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