Selene DRMCairo plug-in

• Index

Examples

• Circle.sel
• DrawCollection.sel
• Gfx.sel
• Images.sel
• Lines.sel
• PatternLinear.sel
• PatternRadial.sel
• PatternSurface.sel
• Rectangle.sel
• SubSurface.sel
• Surface.sel
• Test.sel
• Text.sel

Classes

• SelDCCard
• SelDCFont
• SelDCPattern
• SelDCSurface
• SelDCSurfaceImages

Gfx.sel

#!./Selene
-- Some random graphical figures on the screen

Selene.UseDRMCairo()

	-- Open default card.
	-- As no argument is passed it's the default one
	-- /dev/dri/card0
function file_exists(name)
	local f=io.open(name,"r")
	if f~=nil then io.close(f) return true else return false end
end

card,err,msg = SelDCCard.Open()
if not card then
	print("*E* DRM :", err,msg)
	if SELPLUG_DRMCairo_FBEXTENSION then
		local fb_fch = "/dev/fb1"
		if not file_exists(fb_fch) then
			fb_fch = "/dev/fb0"
		end
		card,err,msg = SelDCCard.OpenFB(fb_fch)
			-- Test to force Y size by 768
--		card,err,msg = SelDCCard.OpenFB("/dev/fb1",768)
		if not card then
			print("*E* ".. fb_fch .." :", err,msg)
			os.exit()
		else
			print("*I* ok with Framebuffer")
		end
	else
		os.exit()
	end
end

local srf = card:GetPrimarySurface()
local w,h = srf:GetSize()	-- Retrieve its size

srf:Clear(0,0,0,1)	-- 100% green and no transparency

----------------------------

for i=1,40 do
	local c = math.random(5)

print(c)
	if c == 1 then
		srf:SetColor( math.random(), math.random(), math.random(), math.random())
	elseif c==2 then
		local x,y = math.random(0,w), math.random(0,h)
		srf:DrawRectangle( x,y , math.random(0,w)-x, math.random(0,h)-y, math.random(5) )
	elseif c==3 then
		srf:DrawLine( math.random(0,w), math.random(0,h), math.random(0,w), math.random(0,h), math.random(5) )
	elseif c==4 then
		local x,y = math.random(0,w), math.random(0,h)
		srf:FillRectangle( x,y , math.random(0,w)-x, math.random(0,h)-y, math.random(5) )
	elseif c==5 then
		srf:FillTriangle( math.random(0,w), math.random(0,h), math.random(0,w), math.random(0,h), math.random(0,w), math.random(0,h) )
	end
end

----------------------------

fch,err,msg = srf:Dump("/tmp","Gfx")
if not fch then	-- An error happened
	print("Can't dump", err, msg);
else
	print("Dumped to", fch);
end

print "Hit 'enter' key to exit"
io.stdin:read'*l'	-- wait for enter
	---
	-- cleanup
	---

srf:Release()
card:Release()