64 lines
1.8 KiB
Lua
64 lines
1.8 KiB
Lua
--[[
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Simple Graphics: An unopinionated graphics API to make hand-made GUIs easy.
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Author: Andrew Lalis <andrewlalisofficial@gmail.com>
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]]--
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local lib = {}
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-- Clears a screen or terminal. If c is not nil then the background color will
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-- be set prior to clearing.
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function lib.clear(m, c)
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if c ~= nil then m.setBackgroundColor(c) end
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m.clear()
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end
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-- Fills a rectangle from the given X and Y coordinates, with a width and
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-- height given by w and h respectively. If c is not nil, then the background
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-- color is set to c.
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function lib.fillRect(m, x, y, w, h, c)
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if c ~= nil then m.setBackgroundColor(c) end
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for i = 1, w do
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for j = 1, h do
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m.setCursorPos(x+i-1, y+j-1)
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m.write(" ")
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end
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end
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end
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-- Draws a horizontal line from x1 to x2 on the given y level.
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function lib.drawXLine(m, x1, x2, y, bg, fg, char)
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char = char or " "
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if bg ~= nil then m.setBackgroundColor(bg) end
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if fg ~= nil then m.setTextColor(fg) end
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for x = x1, x2 do
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m.setCursorPos(x, y)
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m.write(char)
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end
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end
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-- Draws a vertical line from y1 to y2, on the given x level.
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function lib.drawYLine(m, y1, y2, x, bg, fg, char)
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char = char or " "
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if bg ~= nil then m.setBackgroundColor(bg) end
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if fg ~= nil then m.setTextColor(fg) end
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for y = y1, y2 do
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m.setCursorPos(x, y)
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m.write(char)
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end
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end
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-- Draws text starting at the given x y position.
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function lib.drawText(m, x, y, text, fg, bg)
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if fg ~= nil then m.setTextColor(fg) end
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if bg ~= nil then m.setBackgroundColor(bg) end
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m.setCursorPos(x, y)
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m.write(text)
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end
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-- Draws text such that the center of the text is aligned with the given
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-- x and y coordinates.
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function lib.drawTextCenter(m, x, y, text, fg, bg)
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lib.drawText(m, x-(#text/2)+1, y, text, fg, bg)
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end
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return lib |