Revision: 3807
http://vexi.svn.sourceforge.net/vexi/?rev=3807&view=rev
Author: clrg
Date: 2010-02-26 11:35:35 +0000 (Fri, 26 Feb 2010)
Log Message:
-----------
Feature: vexi.layout.aspect - for a box that maintains it's aspect ratio
Added Paths:
-----------
trunk/widgets/org.vexi.widgets/src/org/vexi/lib/layout/aspect.t
trunk/widgets/org.vexi.widgets/src/vexi/layout/aspect.t
trunk/widgets/org.vexi.widgets/src_dev/visualtest/layout/
trunk/widgets/org.vexi.widgets/src_dev/visualtest/layout/aspect.t
Added: trunk/widgets/org.vexi.widgets/src/org/vexi/lib/layout/aspect.t
===================================================================
--- trunk/widgets/org.vexi.widgets/src/org/vexi/lib/layout/aspect.t
(rev 0)
+++ trunk/widgets/org.vexi.widgets/src/org/vexi/lib/layout/aspect.t
2010-02-26 11:35:35 UTC (rev 3807)
@@ -0,0 +1,50 @@
+<!-- Copyright 2009 - see COPYING for details [LGPL] -->
+
+<vexi xmlns:ui="vexi://ui" xmlns:meta="vexi://meta" xmlns:util="vexi.util">
+ <meta:doc>
+ <author>Charles Goodwin</author>
+ <todo>
+ * border-left/right/top/bottom
+ * take more than one argument to border like CSS
+ * depth read function when border is image based
+ * depth should be read-only with image borders
+ </todo>
+ </meta:doc>
+
+ <ui:box redirect=":$content">
+ <ui:box id="content" />
+
+ thisbox.aspectwidth = 1;
+ thisbox.aspectheight = 1;
+
+ thisbox.v_aspect = $content;
+ thisbox.v_content = $content;
+ thisbox.v_fillbox = $content;
+ thisbox.v_textbox = $content;
+
+ thisbox.width ++= static.updateAspect;
+ thisbox.height ++= static.updateAspect;
+ thisbox.aspectwidth ++= static.updateAspect;
+ thisbox.aspectheight ++= static.updateAspect;
+
+ </ui:box>
+
+ /* maintain aspect after a width/height update */
+ static.updateAspect = function(v) {
+ cascade = v;
+ var aw = trapee.aspectwidth;
+ var ah = trapee.aspectheight;
+ var w = trapee.width / aw;
+ var h = trapee.height / ah;
+ if (h>w) {
+ // use width as limiting dimension
+ trapee.v_aspect.maxwidth = trapee.width;
+ trapee.v_aspect.maxheight = w * ah;
+ } else {
+ // use height as limiting dimension
+ trapee.v_aspect.maxwidth = h * aw;
+ trapee.v_aspect.maxheight = trapee.height;
+ }
+ }
+
+</vexi>
Added: trunk/widgets/org.vexi.widgets/src/vexi/layout/aspect.t
===================================================================
--- trunk/widgets/org.vexi.widgets/src/vexi/layout/aspect.t
(rev 0)
+++ trunk/widgets/org.vexi.widgets/src/vexi/layout/aspect.t 2010-02-26
11:35:35 UTC (rev 3807)
@@ -0,0 +1,21 @@
+<!-- Copyright 2009 - see COPYING for details [LGPL] -->
+
+<vexi xmlns:ui="vexi://ui" xmlns:meta="vexi://meta"
xmlns="org.vexi.lib.layout">
+ <meta:doc>
+ <author>Charles Goodwin</author>
+ <name>Aspect</name>
+ <desc>For maintaining the aspect ratio of a box</desc>
+ <usage>
+ This widget has two principle properties:
+
+ * aspectwidth, aspectheight [default is 1]
+
+ Notes:
+
+ * Do not preapply this template - preapply lib.layout.aspect
+ </usage>
+ </meta:doc>
+
+ <aspect />
+ <container />
+</vexi>
Added: trunk/widgets/org.vexi.widgets/src_dev/visualtest/layout/aspect.t
===================================================================
--- trunk/widgets/org.vexi.widgets/src_dev/visualtest/layout/aspect.t
(rev 0)
+++ trunk/widgets/org.vexi.widgets/src_dev/visualtest/layout/aspect.t
2010-02-26 11:35:35 UTC (rev 3807)
@@ -0,0 +1,23 @@
+<vexi xmlns:ui="vexi://ui" xmlns="vexi.layout">
+ <ui:box orient="vertical" fill="white">
+ <ui:box height="10" />
+ <ui:box>
+ <ui:box orient="vertical">
+ <ui:box text="a square" />
+ <aspect fill="black" />
+ <ui:box text="a 2:1 rectangle" />
+ <aspect fill="black" aspectwidth="2" />
+ </ui:box>
+ <ui:box orient="vertical">
+ <ui:box text="a 1:2 rectangle" />
+ <aspect fill="black" aspectheight="2" />
+ <ui:box text="a 2:3 rectangle" />
+ <aspect fill="black" aspectwidth="3" aspectheight="2" />
+ </ui:box>
+ </ui:box>
+ <ui:box height="50" />
+
+ vexi.ui.frame = thisbox;
+
+ </ui:box>
+</vexi>
\ No newline at end of file
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