Build out COLR and CPAL tables

2 files changed, 179 insertions, 12 deletions

diff --git a/src/net/java/dev/typecast/ot/table/ColrTable.java b/src/net/java/dev/typecast/ot/table/ColrTable.java
index 7ae60c0..45051d3 100644
--- a/src/net/java/dev/typecast/ot/table/ColrTable.java
+++ b/src/net/java/dev/typecast/ot/table/ColrTable.java
@@ -1,4 +1,18 @@
-
+/*
+ * Copyright (c) David Schweinsberg
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package net.java.dev.typecast.ot.table;
 
 import java.io.DataInput;
@@ -10,27 +24,49 @@ import java.io.IOException;
 public class ColrTable implements Table {
 
     public class BaseGlyphRecord {
+
         private final int _gid;
         private final int _firstLayerIndex;
         private final int _numLayers;
-        
+
         protected BaseGlyphRecord(DataInput di) throws IOException {
             _gid = di.readUnsignedShort();
             _firstLayerIndex = di.readUnsignedShort();
             _numLayers = di.readUnsignedShort();
         }
+
+        public int getGid() {
+            return _gid;
+        }
+
+        public int getFirstLayerIndex() {
+            return _firstLayerIndex;
+        }
+
+        public int getNumLayers() {
+            return _numLayers;
+        }
     }
-    
+
     public class LayerRecord {
+
         private final int _gid;
         private final int _paletteIndex;
-        
+
         protected LayerRecord(DataInput di) throws IOException {
             _gid = di.readUnsignedShort();
             _paletteIndex = di.readUnsignedShort();
         }
+
+        public int getGid() {
+            return _gid;
+        }
+
+        public int getPaletteIndex() {
+            return _paletteIndex;
+        }
     }
-    
+
     private final DirectoryEntry _de;
     private final int _version;
     private final int _numBaseGlyphRecords;
@@ -47,12 +83,22 @@ public class ColrTable implements Table {
         _offsetBaseGlyphRecord = di.readInt();
         _offsetLayerRecord = di.readInt();
         _numLayerRecords = di.readUnsignedShort();
-        
+
+        int byteCount = 14;
+        if (_offsetBaseGlyphRecord > byteCount) {
+            di.skipBytes(byteCount - _offsetBaseGlyphRecord);
+        }
+
         _baseGlyphRecords = new BaseGlyphRecord[_numBaseGlyphRecords];
         for (int i = 0; i < _numBaseGlyphRecords; ++i) {
             _baseGlyphRecords[i] = new BaseGlyphRecord(di);
+            byteCount += 6;
+        }
+
+        if (_offsetLayerRecord > byteCount) {
+            di.skipBytes(byteCount - _offsetLayerRecord);
         }
-        
+
         _layerRecords = new LayerRecord[_numLayerRecords];
         for (int i = 0; i < _numLayerRecords; ++i) {
             _layerRecords[i] = new LayerRecord(di);
@@ -61,9 +107,18 @@ public class ColrTable implements Table {
 
     @Override
     public String toString() {
-        return new StringBuffer()
-            .append("'COLR' Table\n---------------------------------------")
-            .toString();
+        StringBuilder sb = new StringBuilder();
+        sb.append("'COLR' Table\n------------\nBase Glyph Records\n");
+        for (BaseGlyphRecord record : _baseGlyphRecords) {
+            sb.append(String.format("%d : %d, %d\n", record.getGid(),
+                    record.getFirstLayerIndex(), record.getNumLayers()));
+        }
+        sb.append("\nLayer Records\n");
+        for (LayerRecord record : _layerRecords) {
+            sb.append(String.format("%d : %d\n", record.getGid(),
+                    record.getPaletteIndex()));
+        }
+        return sb.toString();
     }
 
     @Override
diff --git a/src/net/java/dev/typecast/ot/table/CpalTable.java b/src/net/java/dev/typecast/ot/table/CpalTable.java
index 5326537..9a3d384 100644
--- a/src/net/java/dev/typecast/ot/table/CpalTable.java
+++ b/src/net/java/dev/typecast/ot/table/CpalTable.java
@@ -1,4 +1,18 @@
-
+/*
+ * Copyright (c) David Schweinsberg
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package net.java.dev.typecast.ot.table;
 
 import java.io.DataInput;
@@ -9,10 +23,108 @@ import java.io.IOException;
  */
 public class CpalTable implements Table {
 
-    private DirectoryEntry _de;
+    public class ColorRecord {
+
+        private final short _blue;
+        private final short _green;
+        private final short _red;
+        private final short _alpha;
+
+        protected ColorRecord(DataInput di) throws IOException {
+            _blue = (short) di.readUnsignedByte();
+            _green = (short) di.readUnsignedByte();
+            _red = (short) di.readUnsignedByte();
+            _alpha = (short) di.readUnsignedByte();
+        }
+
+        public short getBlue() {
+            return _blue;
+        }
+
+        public short getGreen() {
+            return _green;
+        }
+
+        public short getRed() {
+            return _red;
+        }
+
+        public short getAlpha() {
+            return _alpha;
+        }
+    }
+
+    private final DirectoryEntry _de;
+    private final int _version;
+    private final int _numPalettesEntries;
+    private final int _numPalette;
+    private final int _numColorRecords;
+    private final int _offsetFirstColorRecord;
+    private final int[] _colorRecordIndices;
+    private final int _offsetPaletteTypeArray;
+    private final int _offsetPaletteLabelArray;
+    private final int _offsetPaletteEntryLabelArray;
+    private final ColorRecord[] _colorRecords;
 
     protected CpalTable(DirectoryEntry de, DataInput di) throws IOException {
         this._de = (DirectoryEntry) de.clone();
+        _version = di.readUnsignedShort();
+        _numPalettesEntries = di.readUnsignedShort();
+        _numPalette = di.readUnsignedShort();
+        _numColorRecords = di.readUnsignedShort();
+        _offsetFirstColorRecord = di.readInt();
+
+        int byteCount = 12;
+        _colorRecordIndices = new int[_numPalette];
+        for (int i = 0; i < _numPalette; ++i) {
+            _colorRecordIndices[i] = di.readUnsignedShort();
+            byteCount += 2;
+        }
+        if (_version == 1) {
+            _offsetPaletteTypeArray = di.readInt();
+            _offsetPaletteLabelArray = di.readInt();
+            _offsetPaletteEntryLabelArray = di.readInt();
+            byteCount += 12;
+        } else {
+            _offsetPaletteTypeArray = -1;
+            _offsetPaletteLabelArray = -1;
+            _offsetPaletteEntryLabelArray = -1;
+        }
+
+        if (_offsetFirstColorRecord > byteCount) {
+            di.skipBytes(byteCount - _offsetFirstColorRecord);
+        }
+
+        _colorRecords = new ColorRecord[_numColorRecords];
+        for (int i = 0; i < _numColorRecords; ++i) {
+            _colorRecords[i] = new ColorRecord(di);
+        }
+
+        if (_version == 1) {
+            // TODO find some sample version 1 content
+        }
+    }
+
+    public int getNumPalettesEntries() {
+        return _numPalettesEntries;
+    }
+
+    @Override
+    public String toString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append("'CPAL' Table\n------------\nColor Record Indices\n");
+        int i = 0;
+        for (int index : _colorRecordIndices) {
+            sb.append(String.format("%d: %d\n", i++, index));
+        }
+        sb.append("\nColor Records\n");
+        i = 0;
+        for (ColorRecord record : _colorRecords) {
+            sb.append(String.format("%d: B: %3d, G: %3d, R: %3d, A: %3d\n",
+                    i++, record.getBlue(), record.getGreen(), record.getRed(),
+                    record.getAlpha()));
+        }
+        return sb.toString();
     }
 
     @Override