Re: [ANN] LuaCairo and CairoPad updated

[Hakki Dogusan <dogusanh@...>]

Hi,

Asko Kauppi wrote:
> I think with the OO approach one should go strictly with the official 
> cairomm API.
>
>     http://www.cairographics.org/documentation/cairomm/reference/namespaceCairo.html 
>
>
> Anything else would mean one needs to do and maintain heavy 
> documentation.  Also, it will be easier to sell an implementation if it 
> does not deviate from an existing well designed API.

I agree (especially with documentation part!).. I'll investigate 
cairomm' API with a 'Lua user hat' on my head :)

Meanwhile I've finished mentioned Context's implementation.

http://www.dynaset.org/dogusanh/download/luacairo-1.8.4.1-src.zip (43Kib)

Could you check it, please?


Your example becomes as following (also in download, as cairo_test5oo.lua):
---------------------------------------------------------------
local cairo = require"lcairo"
local CAIRO = cairo

local w = 320
local h = 240
local outfile = "cairo_test2.png"
local cs = cairo.image_surface_create(CAIRO.FORMAT_RGB24, w, h)
-- local cr = cairo.create(cs)

-- option:0 when implemented :)
-- local cs = cairo.ImageSurface(CAIRO.FORMAT_RGB24, w, h)
-- local cr = cairo.Context(cs)

-- option:1
-- local crraw = cairo.create(cs)
-- local cr = cairo.Context(crraw, true) -- true:give ownership, 
default:false

-- option:2
local cr = cairo.Context()
cr:create(cs)

cr:set_source_rgb(1, 1, 1)
cr:paint()

cr:set_source_rgb(0, 0, 0)
cr:select_font_face("Sans", CAIRO.FONT_SLANT_NORMAL, CAIRO.FONT_WEIGHT_BOLD)
cr:set_font_size(w/6)
cr:move_to(0, h/4)
cr:show_text("Hello cairo!")

cr:select_font_face("Sans", CAIRO.FONT_SLANT_NORMAL, 
CAIRO.FONT_WEIGHT_NORMAL)
cr:set_font_size(w/8)
cr:move_to(0, 3*h/4)
cr:text_path("Lua calling...")
cr:set_source_rgb(0.5, 0.5, 1)
cr:fill_preserve()
cr:set_source_rgb(0, 0, 0)
cr:set_line_width(w/200)
cr:stroke()

--not yet! cs:write_to_png(outfile)
cairo.surface_write_to_png(cs, outfile)
-----------------------------------------------------------


> -asko
>
>
> Hakki Dogusan kirjoitti 17.11.2008 kello 18:52:
> [snip]


--
Regards,
Hakki Dogusan