2004/01/19 05:51:38

[org.ibex.core.git] / src / org / xwt / VectorGraphics.java

diff --git a/src/org/xwt/VectorGraphics.java b/src/org/xwt/VectorGraphics.java
index 55c0930..988c18a 100644 (file)
--- a/src/org/xwt/VectorGraphics.java
+++ b/src/org/xwt/VectorGraphics.java
@@ -1,3 +1,4 @@
+// FIXME
 // Copyright 2002 Adam Megacz, see the COPYING file for licensing [GPL]
 package org.xwt;
 import org.xwt.util.*;
@@ -40,6 +41,7 @@ public final class VectorGraphics {
     // Public entry points /////////////////////////////////////////////////////////////////
 
     public static VectorPath parseVectorPath(String s) {
+        if (s == null) return null;
         PathTokenizer t = new PathTokenizer(s);
         VectorPath ret = new VectorPath();
         char last_command = 'M';
@@ -119,6 +121,72 @@ public final class VectorGraphics {
 
     // PathTokenizer //////////////////////////////////////////////////////////////////////////////
 
+    public static Affine parseTransform(String t) {
+        if (t == null) return null;
+        t = t.trim();
+        Affine ret = VectorGraphics.Affine.identity();
+        while (t.length() > 0) {
+            if (t.startsWith("skewX(")) {
+                // FIXME
+                
+            } else if (t.startsWith("shear(")) {
+                // FIXME: nonstandard; remove this
+                ret.multiply(VectorGraphics.Affine.shear(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(')')))));
+                
+            } else if (t.startsWith("skewY(")) {
+                // FIXME
+                
+            } else if (t.startsWith("rotate(")) {
+                String sub = t.substring(t.indexOf('(') + 1, t.indexOf(')'));
+                if (sub.indexOf(',') != -1) {
+                    float angle = Float.parseFloat(sub.substring(0, sub.indexOf(',')));
+                    sub = sub.substring(sub.indexOf(',') + 1);
+                    float cx = Float.parseFloat(sub.substring(0, sub.indexOf(',')));
+                    sub = sub.substring(sub.indexOf(',') + 1);
+                    float cy = Float.parseFloat(sub);
+                    ret.multiply(VectorGraphics.Affine.translate(cx, cy));
+                    ret.multiply(VectorGraphics.Affine.rotate(angle));
+                    ret.multiply(VectorGraphics.Affine.translate(-1 * cx, -1 * cy));
+                } else {
+                    ret.multiply(VectorGraphics.Affine.rotate(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(')')))));
+                }
+                
+            } else if (t.startsWith("translate(")) {
+                String sub = t.substring(t.indexOf('(') + 1, t.indexOf(')'));
+                if (sub.indexOf(',') > -1) {
+                    ret.multiply(VectorGraphics.Affine.translate(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(','))),
+                                                                 Float.parseFloat(t.substring(t.indexOf(',') + 1, t.indexOf(')')))));
+                } else {
+                    ret.multiply(VectorGraphics.Affine.translate(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(','))), 0));
+                }
+                
+            } else if (t.startsWith("flip(")) {
+                String which = t.substring(t.indexOf('(') + 1, t.indexOf(')'));
+                ret.multiply(VectorGraphics.Affine.flip(which.equals("horizontal"), which.equals("vertical")));
+                
+            } else if (t.startsWith("scale(")) {
+                String sub = t.substring(t.indexOf('(') + 1, t.indexOf(')'));
+                if (sub.indexOf(',') > -1) {
+                    ret.multiply(VectorGraphics.Affine.scale(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(','))),
+                                                             Float.parseFloat(t.substring(t.indexOf(',') + 1, t.indexOf(')')))));
+                } else {
+                    ret.multiply(VectorGraphics.Affine.scale(Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(','))),
+                                                             Float.parseFloat(t.substring(t.indexOf('(') + 1, t.indexOf(',')))));
+                }
+                
+            } else if (t.startsWith("matrix(")) {
+                // FIXME: is this mapped right?
+                float d[] = new float[6];
+                StringTokenizer st = new StringTokenizer(t, ",", false);
+                for(int i=0; i<6; i++)
+                    d[i] = Float.parseFloat(st.nextToken());
+                ret.multiply(new VectorGraphics.Affine(d[0], d[1], d[2], d[3], d[4], d[5]));
+            }
+            t = t.substring(t.indexOf(')') + 1).trim();
+        }
+        return ret;
+    }
+    
     public static final float PX_PER_INCH = 72;
     public static final float INCHES_PER_CM = (float)0.3937;
     public static final float INCHES_PER_MM = INCHES_PER_CM / 10;