factor: trim using lists

[factor.git] / extra / images / viewer / viewer.factor

diff --git a/extra/images/viewer/viewer.factor b/extra/images/viewer/viewer.factor
index cf9e9c836aceb06ca93cafc7cc0c78d2ba30ca61..28471b37f045cddb69dac38b1abf8517fc475970 100644 (file)
--- a/extra/images/viewer/viewer.factor
+++ b/extra/images/viewer/viewer.factor
@@ -1,34 +1,104 @@
 ! Copyright (C) 2007, 2009 Doug Coleman.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: accessors images images.loader io.pathnames kernel namespaces
-opengl opengl.gl opengl.textures sequences strings ui ui.gadgets
-ui.gadgets.panes ui.render ;
+USING: accessors arrays combinators.short-circuit continuations
+destructors images images.loader io.pathnames kernel math
+models opengl.gl opengl.textures opengl.textures.private
+sequences strings ui ui.gadgets ui.gadgets.panes
+ui.gadgets.worlds ui.render ;
 IN: images.viewer
 
-TUPLE: image-gadget < gadget { image image } ;
+TUPLE: image-gadget < gadget image texture ;
+<PRIVATE
+M: image-gadget pref-dim* image>> [ image-dim ] [ { 640 480 } ] if* ;
 
-M: image-gadget pref-dim*
-    image>> dim>> ;
-
-: draw-image ( image -- )
-    0 0 glRasterPos2i 1.0 -1.0 glPixelZoom
-    [ dim>> first2 ] [ component-order>> component-order>format ] [ bitmap>> ] tri
-    glDrawPixels ;
+: (image-gadget-texture) ( gadget -- texture )
+    dup image>> { 0 0 } <texture> >>texture texture>> ;
+: image-gadget-texture ( gadget -- texture )
+    dup texture>> [ ] [ (image-gadget-texture) ] ?if ;
 
 M: image-gadget draw-gadget* ( gadget -- )
-    image>> draw-image ;
+    dup image>> [
+        [ dim>> ] [ image-gadget-texture ] bi draw-scaled-texture
+    ] [
+        drop
+    ] if ;
+
+: delete-current-texture ( image-gadget -- )
+    [ texture>> [ dispose ] when* ]
+    [ f >>texture drop ] bi ;
+
+! In unit tests, find-gl-context throws no-world-found when using with-grafted-gadget.
+M: image-gadget ungraft* [ dup find-gl-context delete-current-texture ] [ 2drop ] recover ;
+PRIVATE>
+TUPLE: image-control < image-gadget image-updated? ;
+<PRIVATE
 
-: <image-gadget> ( image -- gadget )
-    \ image-gadget new
-        swap >>image ;
+: (bind-2d-texture) ( texture-id -- )
+    [ GL_TEXTURE_2D ] dip glBindTexture ;
+: bind-2d-texture ( single-texture -- )
+    texture>> (bind-2d-texture) ;
+: (update-texture) ( image single-texture -- )
+    bind-2d-texture tex-sub-image ;
+! works only for single-texture
+: update-texture ( image-gadget -- )
+    [ image>> ] [ texture>> ] bi
+    (update-texture) ;
+GENERIC: texture-size ( texture -- dim )
+M: single-texture texture-size dim>> ;
 
-: image-window ( path -- gadget )
-    [ load-image <image-gadget> dup ] [ open-window ] bi ;
+:: grid-width ( grid element-quot -- width )
+    grid [ 0 ] [
+        first element-quot [ + ] map-reduce
+    ] if-empty ; inline
+: grid-dim ( grid -- dim )
+    [ [ dim>> first ] grid-width ] [ flip [ dim>> second ] grid-width ] bi 2array ;
+M: multi-texture texture-size
+    grid>> grid-dim ;
+: same-size? ( image-gadget -- ? )
+    [ texture>> texture-size ] [ image>> dim>> ] bi = ;
+: (texture-format) ( texture-id -- format )
+    (bind-2d-texture) GL_TEXTURE_2D 0
+    GL_TEXTURE_INTERNAL_FORMAT get-texture-int ;
+! works only for single-texture
+: texture-format ( image-gadget -- format/f )
+    texture>> [
+        texture>> [
+            (texture-format)
+        ] [ f ] if*
+    ] [ f ] if* ;
+: same-internal-format? ( image-gadget -- ? )
+   [ texture-format ] [ image>> image-format 2drop ] bi = ;
 
-GENERIC: image. ( object -- )
+! TODO: also keep multitextures if possible ?
+: keep-same-texture? ( image-gadget -- ? )
+    { [ texture>> single-texture? ]
+      [ same-size? ]
+      [ same-internal-format? ] } 1&& ;
+: ?update-texture ( image-gadget -- )
+    dup image-updated?>> [
+        f >>image-updated?
+        dup keep-same-texture? [ update-texture ] [ delete-current-texture ] if
+    ] [ drop ] if ;
 
-M: string image. ( image -- ) load-image image. ;
+M: image-control model-changed
+    swap value>> >>image t >>image-updated? relayout ;
+M: image-control draw-gadget* [ ?update-texture ] [ call-next-method ] bi ;
+PRIVATE>
+GENERIC: set-image ( gadget object -- gadget )
+M: image set-image >>image ;
+M: string set-image load-image >>image ;
+M: pathname set-image string>> load-image >>image ;
+M: model set-image [ value>> >>image drop ] [ >>model ] 2bi ;
+: new-image-gadget ( class -- gadget ) new ;
+: new-image-gadget* ( object class -- gadget )
+    new-image-gadget swap set-image ;
+: <image-gadget> ( object -- gadget )
+    \ image-gadget new-image-gadget* ;
+: <image-control> ( model -- gadget )
+    \ image-control new-image-gadget* ;
+: image-window ( object -- ) <image-gadget> "Image" open-window ;
 
-M: pathname image. ( image -- ) load-image image. ;
+: image. ( object -- ) <image-gadget> gadget. ;
 
-M: image image. ( image -- ) <image-gadget> gadget. ;
+M: image content-gadget
+    <image-gadget> ;