121 lines
3.1 KiB
Factor
121 lines
3.1 KiB
Factor
! Copyright (C) 2005, 2006 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: alien arrays freetype gadgets-layouts generic hashtables
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io kernel lists math namespaces opengl sequences strings
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styles vectors ;
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IN: gadgets
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SYMBOL: clip
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: init-gl ( dim -- )
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{ 1.0 0.0 0.0 1.0 } gl-color
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GL_PROJECTION glMatrixMode
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glLoadIdentity
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GL_MODELVIEW glMatrixMode
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glLoadIdentity
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{ 0 0 0 } over <rect> clip set
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dup first2 0 0 2swap glViewport
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0 over first2 0 gluOrtho2D
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first2 0 0 2swap glScissor
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GL_SMOOTH glShadeModel
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GL_BLEND glEnable
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GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA glBlendFunc
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GL_SCISSOR_TEST glEnable
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GL_MODELVIEW glMatrixMode
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1.0 1.0 1.0 1.0 glClearColor
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GL_COLOR_BUFFER_BIT glClear ;
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GENERIC: draw-gadget* ( gadget -- )
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M: gadget draw-gadget* ( gadget -- ) drop ;
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GENERIC: draw-interior ( gadget interior -- )
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GENERIC: draw-boundary ( gadget boundary -- )
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: visible-children ( gadget -- seq ) clip get swap children-on ;
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DEFER: draw-gadget
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: (draw-gadget) ( gadget -- )
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dup rect-loc translate [
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gl-translate
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dup dup gadget-interior draw-interior
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dup dup gadget-boundary draw-boundary
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draw-gadget*
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] keep vneg gl-translate ;
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: gl-set-clip ( loc dim -- )
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dup first2 1+ >r >r
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over second swap second + world get rect-dim second
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swap - >r first r> r> r> glScissor ;
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: do-clip ( gadget -- )
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>absolute clip [ rect-intersect dup ] change
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dup rect-loc swap rect-dim gl-set-clip ;
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: draw-gadget ( gadget -- )
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clip get over inside? [
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[
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dup do-clip
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dup (draw-gadget)
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dup visible-children [ draw-gadget ] each
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] with-scope
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] when drop ;
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: draw-world ( world -- )
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[
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dup world-handle [
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dup rect-dim init-gl dup world set draw-gadget
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] with-gl-context
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] with-scope ;
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! Pen paint properties
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M: f draw-interior 2drop ;
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M: f draw-boundary 2drop ;
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! Solid fill/border
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TUPLE: solid color ;
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! Solid pen
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M: solid draw-interior
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solid-color gl-color rect-dim gl-fill-rect ;
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M: solid draw-boundary
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solid-color gl-color rect-dim gl-rect ;
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! Gradient pen
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TUPLE: gradient colors ;
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M: gradient draw-interior ( gadget gradient -- )
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over gadget-orientation swap gradient-colors rot rect-dim
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gl-gradient ;
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! Polygon pen
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TUPLE: polygon color points ;
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: draw-polygon ( polygon quot -- )
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>r dup polygon-color gl-color polygon-points r> each ; inline
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M: polygon draw-boundary ( gadget polygon -- )
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[ gl-poly ] draw-polygon drop ;
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M: polygon draw-interior ( gadget polygon -- )
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[ gl-fill-poly ] draw-polygon drop ;
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: arrow-up { { { 3 0 0 } { 6 6 0 } { 0 6 0 } } } ;
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: arrow-right { { { 0 0 0 } { 6 3 0 } { 0 6 0 } } } ;
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: arrow-down { { { 0 0 0 } { 6 0 0 } { 3 6 0 } } } ;
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: arrow-left { { { 0 3 0 } { 6 0 0 } { 6 6 0 } } } ;
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: arrow-right|
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{ { { 6 0 0 } { 6 6 0 } } } arrow-right append ;
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: arrow-|left
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{ { { 1 0 0 } { 1 6 0 } } } arrow-left append ;
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: <polygon-gadget> ( color points -- gadget )
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dup { 0 0 0 } [ max-dim vmax ] reduce
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>r <polygon> <gadget> r> over set-rect-dim
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[ set-gadget-interior ] keep ;
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