64 lines
1.6 KiB
Elixir
64 lines
1.6 KiB
Elixir
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-------------------------------------------------------------------------
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--# Drawing text with Cairo;
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-- seldom worth the trouble, unless you need to add
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-- images under/over or intermixed with the text.
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-------------------------------------------------------------------------
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include GtkEngine.e
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include GtkCairo.e
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include std/math.e
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constant fnt = create(PangoFontDescription,"Serif 10")
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constant win = create(GtkWindow,
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"title=`Drawing Text with Cairo`,position=1,border_width=10,$destroy=Quit")
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constant panel = create(GtkBox)
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add(win,panel)
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constant screen = create(GtkDrawingArea)
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add(panel,screen)
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show_all(win)
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connect(panel,"draw","Paint")
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main()
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----------------------------------------------------------
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global function Paint(atom ctl, atom event, atom data)
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----------------------------------------------------------
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atom dwin = get(screen,"window")
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atom cr = create(GdkCairo_t,dwin)
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set(cr,{ -- draw a strange shape;
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{"source rgb",0,0,#ff},
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{"move to",2,2},
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{"arc",80,80,60,60, 2.0 * math:PI}, -- create shape
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{"source rgba",0.6, 0.0, 0.8, 0.3}, -- partially translucent color
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{"fill_preserve"}, -- fill shape with color, save shape
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{"color","blue"},
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{"line width",2}, -- outline
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{"stroke"}, -- draw outline around saved shape
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{"color","black"},
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{"move to",5,5}, -- starting point for text
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$})
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atom layout = create(PangoLayout,cr)
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set(layout,{ -- draw text;
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{"font description",fnt},
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{"text",LGPL,-1},
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{"show layout",cr}})
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object dim = get(layout,"pixel size") -- get width & height of text
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set(screen,"size request",dim[1],dim[2]) -- adjust to accomodate text
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set(cr,"destroy")
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return 1
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end function
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