ResourceHelper.java revision cd6e47e4455cec8daa4570ac8073d93bd567d139
1282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski/*
2282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * Copyright (C) 2008 The Android Open Source Project
3282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *
4282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * Licensed under the Apache License, Version 2.0 (the "License");
5282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * you may not use this file except in compliance with the License.
6282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * You may obtain a copy of the License at
7282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *
8282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *      http://www.apache.org/licenses/LICENSE-2.0
9282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski *
10282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * Unless required by applicable law or agreed to in writing, software
11282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * distributed under the License is distributed on an "AS IS" BASIS,
12282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * See the License for the specific language governing permissions and
14282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * limitations under the License.
15282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski */
16282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
17282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskipackage com.android.layoutlib.bridge.impl;
18282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
195f1bf496948fb6383ae17e5467a26a00489d7564Deepanshu Guptaimport com.android.SdkConstants;
20282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport com.android.ide.common.rendering.api.DensityBasedResourceValue;
21282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport com.android.ide.common.rendering.api.LayoutLog;
22282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport com.android.ide.common.rendering.api.RenderResources;
23282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport com.android.ide.common.rendering.api.ResourceValue;
24fc8f4aad7395eca11f6d9b82eb266b1f4ee5041bDeepanshu Guptaimport com.android.internal.util.XmlUtils;
25282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport com.android.layoutlib.bridge.Bridge;
26282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport com.android.layoutlib.bridge.android.BridgeContext;
27282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport com.android.layoutlib.bridge.android.BridgeXmlBlockParser;
28cd6e47e4455cec8daa4570ac8073d93bd567d139Deepanshu Guptaimport com.android.layoutlib.bridge.android.RenderParamsFlags;
29282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport com.android.ninepatch.NinePatch;
30282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport com.android.ninepatch.NinePatchChunk;
31282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport com.android.resources.Density;
32282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
33282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport org.xmlpull.v1.XmlPullParser;
34282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport org.xmlpull.v1.XmlPullParserException;
35282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
36476e582d2ffdf25102d4c55f8c242baa3d21d37fDeepanshu Guptaimport android.annotation.NonNull;
37566b303365078fac9a454f1595add19e02631db3Diego Perezimport android.annotation.Nullable;
38282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport android.content.res.ColorStateList;
39566b303365078fac9a454f1595add19e02631db3Diego Perezimport android.content.res.ComplexColor;
40566b303365078fac9a454f1595add19e02631db3Diego Perezimport android.content.res.ComplexColor_Accessor;
41566b303365078fac9a454f1595add19e02631db3Diego Perezimport android.content.res.GradientColor;
424a605c6fa0027ee116beb29fbc9625721f0441f0Deepanshu Guptaimport android.content.res.Resources.Theme;
43282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport android.graphics.Bitmap;
44282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport android.graphics.Bitmap_Delegate;
45282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport android.graphics.NinePatch_Delegate;
46282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport android.graphics.Rect;
47282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport android.graphics.drawable.BitmapDrawable;
48282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport android.graphics.drawable.ColorDrawable;
49282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport android.graphics.drawable.Drawable;
50282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport android.graphics.drawable.NinePatchDrawable;
51282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport android.util.TypedValue;
52282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
53282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport java.io.File;
54282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport java.io.FileInputStream;
55566b303365078fac9a454f1595add19e02631db3Diego Perezimport java.io.FileNotFoundException;
56282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport java.io.IOException;
57282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport java.io.InputStream;
58282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport java.net.MalformedURLException;
59282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport java.util.regex.Matcher;
60282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskiimport java.util.regex.Pattern;
61282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
62282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski/**
63282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski * Helper class to provide various conversion method used in handling android resources.
64282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski */
65282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinskipublic final class ResourceHelper {
66282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
67282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    private final static Pattern sFloatPattern = Pattern.compile("(-?[0-9]+(?:\\.[0-9]+)?)(.*)");
68282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    private final static float[] sFloatOut = new float[1];
69282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
70282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    private final static TypedValue mValue = new TypedValue();
71282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
72282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    /**
73282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski     * Returns the color value represented by the given string value
74282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski     * @param value the color value
75282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski     * @return the color as an int
761a12b805698c7cba9c2daa78c76c055afbdfa9fcDeepanshu Gupta     * @throws NumberFormatException if the conversion failed.
77282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski     */
78282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    public static int getColor(String value) {
79282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        if (value != null) {
801a12b805698c7cba9c2daa78c76c055afbdfa9fcDeepanshu Gupta            if (!value.startsWith("#")) {
815f1bf496948fb6383ae17e5467a26a00489d7564Deepanshu Gupta                if (value.startsWith(SdkConstants.PREFIX_THEME_REF)) {
825f1bf496948fb6383ae17e5467a26a00489d7564Deepanshu Gupta                    throw new NumberFormatException(String.format(
835f1bf496948fb6383ae17e5467a26a00489d7564Deepanshu Gupta                            "Attribute '%s' not found. Are you using the right theme?", value));
845f1bf496948fb6383ae17e5467a26a00489d7564Deepanshu Gupta                }
85282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                throw new NumberFormatException(
86282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                        String.format("Color value '%s' must start with #", value));
87282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            }
88282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
89282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            value = value.substring(1);
90282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
91282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            // make sure it's not longer than 32bit
92282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            if (value.length() > 8) {
93282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                throw new NumberFormatException(String.format(
94282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                        "Color value '%s' is too long. Format is either" +
95282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                        "#AARRGGBB, #RRGGBB, #RGB, or #ARGB",
96282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                        value));
97282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            }
98282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
99282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            if (value.length() == 3) { // RGB format
100282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                char[] color = new char[8];
101282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                color[0] = color[1] = 'F';
102282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                color[2] = color[3] = value.charAt(0);
103282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                color[4] = color[5] = value.charAt(1);
104282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                color[6] = color[7] = value.charAt(2);
105282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                value = new String(color);
106282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            } else if (value.length() == 4) { // ARGB format
107282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                char[] color = new char[8];
108282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                color[0] = color[1] = value.charAt(0);
109282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                color[2] = color[3] = value.charAt(1);
110282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                color[4] = color[5] = value.charAt(2);
111282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                color[6] = color[7] = value.charAt(3);
112282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                value = new String(color);
113282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            } else if (value.length() == 6) {
114282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                value = "FF" + value;
115282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            }
116282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
117282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            // this is a RRGGBB or AARRGGBB value
118282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
119282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            // Integer.parseInt will fail to parse strings like "ff191919", so we use
120282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            // a Long, but cast the result back into an int, since we know that we're only
121282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            // dealing with 32 bit values.
122282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            return (int)Long.parseLong(value, 16);
123282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        }
124282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
125282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        throw new NumberFormatException();
126282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    }
127282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
128566b303365078fac9a454f1595add19e02631db3Diego Perez    /**
129566b303365078fac9a454f1595add19e02631db3Diego Perez     * Returns a {@link ComplexColor} from the given {@link ResourceValue}
130566b303365078fac9a454f1595add19e02631db3Diego Perez     *
131566b303365078fac9a454f1595add19e02631db3Diego Perez     * @param resValue the value containing a color value or a file path to a complex color
132566b303365078fac9a454f1595add19e02631db3Diego Perez     * definition
133566b303365078fac9a454f1595add19e02631db3Diego Perez     * @param context the current context
134566b303365078fac9a454f1595add19e02631db3Diego Perez     * @param theme the theme to use when resolving the complex color
135566b303365078fac9a454f1595add19e02631db3Diego Perez     * @param allowGradients when false, only {@link ColorStateList} will be returned. If a {@link
136566b303365078fac9a454f1595add19e02631db3Diego Perez     * GradientColor} is found, null will be returned.
137566b303365078fac9a454f1595add19e02631db3Diego Perez     */
138566b303365078fac9a454f1595add19e02631db3Diego Perez    @Nullable
139566b303365078fac9a454f1595add19e02631db3Diego Perez    private static ComplexColor getInternalComplexColor(@NonNull ResourceValue resValue,
140566b303365078fac9a454f1595add19e02631db3Diego Perez            @NonNull BridgeContext context, @Nullable Theme theme, boolean allowGradients) {
141282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        String value = resValue.getValue();
142566b303365078fac9a454f1595add19e02631db3Diego Perez        if (value == null || RenderResources.REFERENCE_NULL.equals(value)) {
143566b303365078fac9a454f1595add19e02631db3Diego Perez            return null;
144566b303365078fac9a454f1595add19e02631db3Diego Perez        }
145566b303365078fac9a454f1595add19e02631db3Diego Perez
146cd6e47e4455cec8daa4570ac8073d93bd567d139Deepanshu Gupta        XmlPullParser parser = null;
147566b303365078fac9a454f1595add19e02631db3Diego Perez        // first check if the value is a file (xml most likely)
148cd6e47e4455cec8daa4570ac8073d93bd567d139Deepanshu Gupta        Boolean psiParserSupport = context.getLayoutlibCallback().getFlag(
149cd6e47e4455cec8daa4570ac8073d93bd567d139Deepanshu Gupta                RenderParamsFlags.FLAG_KEY_XML_FILE_PARSER_SUPPORT);
150cd6e47e4455cec8daa4570ac8073d93bd567d139Deepanshu Gupta        if (psiParserSupport != null && psiParserSupport) {
151cd6e47e4455cec8daa4570ac8073d93bd567d139Deepanshu Gupta            parser = context.getLayoutlibCallback().getXmlFileParser(value);
152cd6e47e4455cec8daa4570ac8073d93bd567d139Deepanshu Gupta        }
153566b303365078fac9a454f1595add19e02631db3Diego Perez        if (parser == null) {
154282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            File f = new File(value);
155282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            if (f.isFile()) {
156566b303365078fac9a454f1595add19e02631db3Diego Perez                // let the framework inflate the color from the XML file, by
157566b303365078fac9a454f1595add19e02631db3Diego Perez                // providing an XmlPullParser
158282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                try {
159566b303365078fac9a454f1595add19e02631db3Diego Perez                    parser = ParserFactory.create(f);
160566b303365078fac9a454f1595add19e02631db3Diego Perez                } catch (XmlPullParserException | FileNotFoundException e) {
161282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    Bridge.getLog().error(LayoutLog.TAG_RESOURCES_READ,
162282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                            "Failed to parse file " + value, e, null /*data*/);
163282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                }
164566b303365078fac9a454f1595add19e02631db3Diego Perez            }
165566b303365078fac9a454f1595add19e02631db3Diego Perez        }
166566b303365078fac9a454f1595add19e02631db3Diego Perez
167566b303365078fac9a454f1595add19e02631db3Diego Perez        if (parser != null) {
168566b303365078fac9a454f1595add19e02631db3Diego Perez            try {
169566b303365078fac9a454f1595add19e02631db3Diego Perez                BridgeXmlBlockParser blockParser = new BridgeXmlBlockParser(
170566b303365078fac9a454f1595add19e02631db3Diego Perez                        parser, context, resValue.isFramework());
171282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                try {
172566b303365078fac9a454f1595add19e02631db3Diego Perez                    // Advance the parser to the first element so we can detect if it's a
173566b303365078fac9a454f1595add19e02631db3Diego Perez                    // color list or a gradient color
174566b303365078fac9a454f1595add19e02631db3Diego Perez                    int type;
175566b303365078fac9a454f1595add19e02631db3Diego Perez                    //noinspection StatementWithEmptyBody
176566b303365078fac9a454f1595add19e02631db3Diego Perez                    while ((type = blockParser.next()) != XmlPullParser.START_TAG
177566b303365078fac9a454f1595add19e02631db3Diego Perez                            && type != XmlPullParser.END_DOCUMENT) {
178566b303365078fac9a454f1595add19e02631db3Diego Perez                        // Seek parser to start tag.
179566b303365078fac9a454f1595add19e02631db3Diego Perez                    }
180566b303365078fac9a454f1595add19e02631db3Diego Perez
181566b303365078fac9a454f1595add19e02631db3Diego Perez                    if (type != XmlPullParser.START_TAG) {
182566b303365078fac9a454f1595add19e02631db3Diego Perez                        throw new XmlPullParserException("No start tag found");
183566b303365078fac9a454f1595add19e02631db3Diego Perez                    }
184566b303365078fac9a454f1595add19e02631db3Diego Perez
185566b303365078fac9a454f1595add19e02631db3Diego Perez                    final String name = blockParser.getName();
186566b303365078fac9a454f1595add19e02631db3Diego Perez                    if (allowGradients && "gradient".equals(name)) {
187566b303365078fac9a454f1595add19e02631db3Diego Perez                        return ComplexColor_Accessor.createGradientColorFromXmlInner(
188566b303365078fac9a454f1595add19e02631db3Diego Perez                                context.getResources(),
189566b303365078fac9a454f1595add19e02631db3Diego Perez                                blockParser, blockParser,
190566b303365078fac9a454f1595add19e02631db3Diego Perez                                theme);
191566b303365078fac9a454f1595add19e02631db3Diego Perez                    } else if ("selector".equals(name)) {
192566b303365078fac9a454f1595add19e02631db3Diego Perez                        return ComplexColor_Accessor.createColorStateListFromXmlInner(
193566b303365078fac9a454f1595add19e02631db3Diego Perez                                context.getResources(),
194566b303365078fac9a454f1595add19e02631db3Diego Perez                                blockParser, blockParser,
195566b303365078fac9a454f1595add19e02631db3Diego Perez                                theme);
196566b303365078fac9a454f1595add19e02631db3Diego Perez                    }
197566b303365078fac9a454f1595add19e02631db3Diego Perez                } finally {
198566b303365078fac9a454f1595add19e02631db3Diego Perez                    blockParser.ensurePopped();
199282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                }
200566b303365078fac9a454f1595add19e02631db3Diego Perez            } catch (XmlPullParserException e) {
201566b303365078fac9a454f1595add19e02631db3Diego Perez                Bridge.getLog().error(LayoutLog.TAG_BROKEN,
202566b303365078fac9a454f1595add19e02631db3Diego Perez                        "Failed to configure parser for " + value, e, null /*data*/);
203566b303365078fac9a454f1595add19e02631db3Diego Perez                // we'll return null below.
204566b303365078fac9a454f1595add19e02631db3Diego Perez            } catch (Exception e) {
205566b303365078fac9a454f1595add19e02631db3Diego Perez                // this is an error and not warning since the file existence is
206566b303365078fac9a454f1595add19e02631db3Diego Perez                // checked before attempting to parse it.
207566b303365078fac9a454f1595add19e02631db3Diego Perez                Bridge.getLog().error(LayoutLog.TAG_RESOURCES_READ,
208566b303365078fac9a454f1595add19e02631db3Diego Perez                        "Failed to parse file " + value, e, null /*data*/);
209566b303365078fac9a454f1595add19e02631db3Diego Perez
210566b303365078fac9a454f1595add19e02631db3Diego Perez                return null;
211566b303365078fac9a454f1595add19e02631db3Diego Perez            }
212566b303365078fac9a454f1595add19e02631db3Diego Perez        } else {
213566b303365078fac9a454f1595add19e02631db3Diego Perez            // try to load the color state list from an int
214566b303365078fac9a454f1595add19e02631db3Diego Perez            try {
215566b303365078fac9a454f1595add19e02631db3Diego Perez                int color = getColor(value);
216566b303365078fac9a454f1595add19e02631db3Diego Perez                return ColorStateList.valueOf(color);
217566b303365078fac9a454f1595add19e02631db3Diego Perez            } catch (NumberFormatException e) {
218566b303365078fac9a454f1595add19e02631db3Diego Perez                Bridge.getLog().error(LayoutLog.TAG_RESOURCES_FORMAT,
219566b303365078fac9a454f1595add19e02631db3Diego Perez                        "Failed to convert " + value + " into a ColorStateList", e,
220566b303365078fac9a454f1595add19e02631db3Diego Perez                        null /*data*/);
221282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            }
222282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        }
223282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
224282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        return null;
225282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    }
226282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
227282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    /**
228566b303365078fac9a454f1595add19e02631db3Diego Perez     * Returns a {@link ColorStateList} from the given {@link ResourceValue}
229566b303365078fac9a454f1595add19e02631db3Diego Perez     *
230566b303365078fac9a454f1595add19e02631db3Diego Perez     * @param resValue the value containing a color value or a file path to a complex color
231566b303365078fac9a454f1595add19e02631db3Diego Perez     * definition
232566b303365078fac9a454f1595add19e02631db3Diego Perez     * @param context the current context
233566b303365078fac9a454f1595add19e02631db3Diego Perez     */
234566b303365078fac9a454f1595add19e02631db3Diego Perez    @Nullable
235566b303365078fac9a454f1595add19e02631db3Diego Perez    public static ColorStateList getColorStateList(@NonNull ResourceValue resValue,
236566b303365078fac9a454f1595add19e02631db3Diego Perez            @NonNull BridgeContext context) {
237566b303365078fac9a454f1595add19e02631db3Diego Perez        return (ColorStateList) getInternalComplexColor(resValue, context, context.getTheme(),
238566b303365078fac9a454f1595add19e02631db3Diego Perez                false);
239566b303365078fac9a454f1595add19e02631db3Diego Perez    }
240566b303365078fac9a454f1595add19e02631db3Diego Perez
241566b303365078fac9a454f1595add19e02631db3Diego Perez    /**
242566b303365078fac9a454f1595add19e02631db3Diego Perez     * Returns a {@link ComplexColor} from the given {@link ResourceValue}
243566b303365078fac9a454f1595add19e02631db3Diego Perez     *
244566b303365078fac9a454f1595add19e02631db3Diego Perez     * @param resValue the value containing a color value or a file path to a complex color
245566b303365078fac9a454f1595add19e02631db3Diego Perez     * definition
246566b303365078fac9a454f1595add19e02631db3Diego Perez     * @param context the current context
247566b303365078fac9a454f1595add19e02631db3Diego Perez     */
248566b303365078fac9a454f1595add19e02631db3Diego Perez    @Nullable
249566b303365078fac9a454f1595add19e02631db3Diego Perez    public static ComplexColor getComplexColor(@NonNull ResourceValue resValue,
250566b303365078fac9a454f1595add19e02631db3Diego Perez            @NonNull BridgeContext context) {
251566b303365078fac9a454f1595add19e02631db3Diego Perez        return getInternalComplexColor(resValue, context, context.getTheme(), true);
252566b303365078fac9a454f1595add19e02631db3Diego Perez    }
253566b303365078fac9a454f1595add19e02631db3Diego Perez
254566b303365078fac9a454f1595add19e02631db3Diego Perez    /**
255282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski     * Returns a drawable from the given value.
256282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski     * @param value The value that contains a path to a 9 patch, a bitmap or a xml based drawable,
257282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski     * or an hexadecimal color
258282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski     * @param context the current context
259282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski     */
260282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    public static Drawable getDrawable(ResourceValue value, BridgeContext context) {
2614a605c6fa0027ee116beb29fbc9625721f0441f0Deepanshu Gupta        return getDrawable(value, context, null);
2624a605c6fa0027ee116beb29fbc9625721f0441f0Deepanshu Gupta    }
2634a605c6fa0027ee116beb29fbc9625721f0441f0Deepanshu Gupta
2644a605c6fa0027ee116beb29fbc9625721f0441f0Deepanshu Gupta    /**
2654a605c6fa0027ee116beb29fbc9625721f0441f0Deepanshu Gupta     * Returns a drawable from the given value.
2664a605c6fa0027ee116beb29fbc9625721f0441f0Deepanshu Gupta     * @param value The value that contains a path to a 9 patch, a bitmap or a xml based drawable,
2674a605c6fa0027ee116beb29fbc9625721f0441f0Deepanshu Gupta     * or an hexadecimal color
2684a605c6fa0027ee116beb29fbc9625721f0441f0Deepanshu Gupta     * @param context the current context
2694a605c6fa0027ee116beb29fbc9625721f0441f0Deepanshu Gupta     * @param theme the theme to be used to inflate the drawable.
2704a605c6fa0027ee116beb29fbc9625721f0441f0Deepanshu Gupta     */
2714a605c6fa0027ee116beb29fbc9625721f0441f0Deepanshu Gupta    public static Drawable getDrawable(ResourceValue value, BridgeContext context, Theme theme) {
27214bf0cef7eeed572a67c29a328581afac4decc20Deepanshu Gupta        if (value == null) {
27314bf0cef7eeed572a67c29a328581afac4decc20Deepanshu Gupta            return null;
27414bf0cef7eeed572a67c29a328581afac4decc20Deepanshu Gupta        }
275282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        String stringValue = value.getValue();
276282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        if (RenderResources.REFERENCE_NULL.equals(stringValue)) {
277282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            return null;
278282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        }
279282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
280282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        String lowerCaseValue = stringValue.toLowerCase();
281282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
282282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        Density density = Density.MEDIUM;
283282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        if (value instanceof DensityBasedResourceValue) {
284282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            density =
285282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                ((DensityBasedResourceValue)value).getResourceDensity();
286282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        }
287282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
288282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
289282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        if (lowerCaseValue.endsWith(NinePatch.EXTENSION_9PATCH)) {
290282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            File file = new File(stringValue);
291282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            if (file.isFile()) {
292282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                try {
293282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    return getNinePatchDrawable(
294282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                            new FileInputStream(file), density, value.isFramework(),
295282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                            stringValue, context);
296282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                } catch (IOException e) {
297282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    // failed to read the file, we'll return null below.
298282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    Bridge.getLog().error(LayoutLog.TAG_RESOURCES_READ,
299282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                            "Failed lot load " + file.getAbsolutePath(), e, null /*data*/);
300282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                }
301282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            }
302282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
303282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            return null;
304282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        } else if (lowerCaseValue.endsWith(".xml")) {
305282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            // create a block parser for the file
306282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            File f = new File(stringValue);
307282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            if (f.isFile()) {
308282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                try {
309282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    // let the framework inflate the Drawable from the XML file.
310282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    XmlPullParser parser = ParserFactory.create(f);
311282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
312282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    BridgeXmlBlockParser blockParser = new BridgeXmlBlockParser(
313282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                            parser, context, value.isFramework());
314282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    try {
3154a605c6fa0027ee116beb29fbc9625721f0441f0Deepanshu Gupta                        return Drawable.createFromXml(context.getResources(), blockParser, theme);
316282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    } finally {
317282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                        blockParser.ensurePopped();
318282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    }
319282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                } catch (Exception e) {
320282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    // this is an error and not warning since the file existence is checked before
321282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    // attempting to parse it.
322282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    Bridge.getLog().error(null, "Failed to parse file " + stringValue,
323282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                            e, null /*data*/);
324282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                }
325282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            } else {
326282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                Bridge.getLog().error(LayoutLog.TAG_BROKEN,
327282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                        String.format("File %s does not exist (or is not a file)", stringValue),
328282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                        null /*data*/);
329282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            }
330282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
331282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            return null;
332282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        } else {
333282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            File bmpFile = new File(stringValue);
334282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            if (bmpFile.isFile()) {
335282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                try {
336282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    Bitmap bitmap = Bridge.getCachedBitmap(stringValue,
337282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                            value.isFramework() ? null : context.getProjectKey());
338282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
339282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    if (bitmap == null) {
340282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                        bitmap = Bitmap_Delegate.createBitmap(bmpFile, false /*isMutable*/,
341282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                                density);
342282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                        Bridge.setCachedBitmap(stringValue, bitmap,
343282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                                value.isFramework() ? null : context.getProjectKey());
344282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    }
345282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
346282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    return new BitmapDrawable(context.getResources(), bitmap);
347282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                } catch (IOException e) {
348282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    // we'll return null below
349282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    Bridge.getLog().error(LayoutLog.TAG_RESOURCES_READ,
350282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                            "Failed lot load " + bmpFile.getAbsolutePath(), e, null /*data*/);
351282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                }
352282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            } else {
353282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                // attempt to get a color from the value
354282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                try {
355282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    int color = getColor(stringValue);
356282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    return new ColorDrawable(color);
357282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                } catch (NumberFormatException e) {
358282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    // we'll return null below.
359282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    Bridge.getLog().error(LayoutLog.TAG_RESOURCES_FORMAT,
360282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                            "Failed to convert " + stringValue + " into a drawable", e,
361282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                            null /*data*/);
362282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                }
363282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            }
364282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        }
365282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
366282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        return null;
367282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    }
368282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
369282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    private static Drawable getNinePatchDrawable(InputStream inputStream, Density density,
370282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            boolean isFramework, String cacheKey, BridgeContext context) throws IOException {
371282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        // see if we still have both the chunk and the bitmap in the caches
372282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        NinePatchChunk chunk = Bridge.getCached9Patch(cacheKey,
373282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                isFramework ? null : context.getProjectKey());
374282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        Bitmap bitmap = Bridge.getCachedBitmap(cacheKey,
375282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                isFramework ? null : context.getProjectKey());
376282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
377282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        // if either chunk or bitmap is null, then we reload the 9-patch file.
378282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        if (chunk == null || bitmap == null) {
379282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            try {
380282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                NinePatch ninePatch = NinePatch.load(inputStream, true /*is9Patch*/,
381282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                        false /* convert */);
382282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                if (ninePatch != null) {
383282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    if (chunk == null) {
384282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                        chunk = ninePatch.getChunk();
385282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
386282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                        Bridge.setCached9Patch(cacheKey, chunk,
387282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                                isFramework ? null : context.getProjectKey());
388282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    }
389282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
390282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    if (bitmap == null) {
391282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                        bitmap = Bitmap_Delegate.createBitmap(ninePatch.getImage(),
392282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                                false /*isMutable*/,
393282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                                density);
394282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
395282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                        Bridge.setCachedBitmap(cacheKey, bitmap,
396282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                                isFramework ? null : context.getProjectKey());
397282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    }
398282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                }
399282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            } catch (MalformedURLException e) {
400282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                // URL is wrong, we'll return null below
401282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            }
402282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        }
403282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
404282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        if (chunk != null && bitmap != null) {
405282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            int[] padding = chunk.getPadding();
406282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            Rect paddingRect = new Rect(padding[0], padding[1], padding[2], padding[3]);
407282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
408282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            return new NinePatchDrawable(context.getResources(), bitmap,
409282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    NinePatch_Delegate.serialize(chunk),
410282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    paddingRect, null);
411282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        }
412282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
413282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        return null;
414282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    }
415282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
416fc8f4aad7395eca11f6d9b82eb266b1f4ee5041bDeepanshu Gupta    /**
417fc8f4aad7395eca11f6d9b82eb266b1f4ee5041bDeepanshu Gupta     * Looks for an attribute in the current theme.
418fc8f4aad7395eca11f6d9b82eb266b1f4ee5041bDeepanshu Gupta     *
419fc8f4aad7395eca11f6d9b82eb266b1f4ee5041bDeepanshu Gupta     * @param resources the render resources
420fc8f4aad7395eca11f6d9b82eb266b1f4ee5041bDeepanshu Gupta     * @param name the name of the attribute
421fc8f4aad7395eca11f6d9b82eb266b1f4ee5041bDeepanshu Gupta     * @param defaultValue the default value.
422fc8f4aad7395eca11f6d9b82eb266b1f4ee5041bDeepanshu Gupta     * @param isFrameworkAttr if the attribute is in android namespace
423fc8f4aad7395eca11f6d9b82eb266b1f4ee5041bDeepanshu Gupta     * @return the value of the attribute or the default one if not found.
424fc8f4aad7395eca11f6d9b82eb266b1f4ee5041bDeepanshu Gupta     */
425fc8f4aad7395eca11f6d9b82eb266b1f4ee5041bDeepanshu Gupta    public static boolean getBooleanThemeValue(@NonNull RenderResources resources, String name,
426fc8f4aad7395eca11f6d9b82eb266b1f4ee5041bDeepanshu Gupta            boolean isFrameworkAttr, boolean defaultValue) {
427fc8f4aad7395eca11f6d9b82eb266b1f4ee5041bDeepanshu Gupta        ResourceValue value = resources.findItemInTheme(name, isFrameworkAttr);
428fc8f4aad7395eca11f6d9b82eb266b1f4ee5041bDeepanshu Gupta        value = resources.resolveResValue(value);
429fc8f4aad7395eca11f6d9b82eb266b1f4ee5041bDeepanshu Gupta        if (value == null) {
430fc8f4aad7395eca11f6d9b82eb266b1f4ee5041bDeepanshu Gupta            return defaultValue;
431fc8f4aad7395eca11f6d9b82eb266b1f4ee5041bDeepanshu Gupta        }
432fc8f4aad7395eca11f6d9b82eb266b1f4ee5041bDeepanshu Gupta        return XmlUtils.convertValueToBoolean(value.getValue(), defaultValue);
433fc8f4aad7395eca11f6d9b82eb266b1f4ee5041bDeepanshu Gupta    }
434fc8f4aad7395eca11f6d9b82eb266b1f4ee5041bDeepanshu Gupta
435282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    // ------- TypedValue stuff
436282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    // This is taken from //device/libs/utils/ResourceTypes.cpp
437282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
438282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    private static final class UnitEntry {
439282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        String name;
440282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        int type;
441282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        int unit;
442282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        float scale;
443282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
444282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        UnitEntry(String name, int type, int unit, float scale) {
445282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            this.name = name;
446282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            this.type = type;
447282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            this.unit = unit;
448282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            this.scale = scale;
449282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        }
450282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    }
451282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
452282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    private final static UnitEntry[] sUnitNames = new UnitEntry[] {
453282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        new UnitEntry("px", TypedValue.TYPE_DIMENSION, TypedValue.COMPLEX_UNIT_PX, 1.0f),
454282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        new UnitEntry("dip", TypedValue.TYPE_DIMENSION, TypedValue.COMPLEX_UNIT_DIP, 1.0f),
455282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        new UnitEntry("dp", TypedValue.TYPE_DIMENSION, TypedValue.COMPLEX_UNIT_DIP, 1.0f),
456282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        new UnitEntry("sp", TypedValue.TYPE_DIMENSION, TypedValue.COMPLEX_UNIT_SP, 1.0f),
457282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        new UnitEntry("pt", TypedValue.TYPE_DIMENSION, TypedValue.COMPLEX_UNIT_PT, 1.0f),
458282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        new UnitEntry("in", TypedValue.TYPE_DIMENSION, TypedValue.COMPLEX_UNIT_IN, 1.0f),
459282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        new UnitEntry("mm", TypedValue.TYPE_DIMENSION, TypedValue.COMPLEX_UNIT_MM, 1.0f),
460282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        new UnitEntry("%", TypedValue.TYPE_FRACTION, TypedValue.COMPLEX_UNIT_FRACTION, 1.0f/100),
461282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        new UnitEntry("%p", TypedValue.TYPE_FRACTION, TypedValue.COMPLEX_UNIT_FRACTION_PARENT, 1.0f/100),
462282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    };
463282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
464282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    /**
465282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski     * Returns the raw value from the given attribute float-type value string.
466282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski     * This object is only valid until the next call on to {@link ResourceHelper}.
467282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski     */
468282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    public static TypedValue getValue(String attribute, String value, boolean requireUnit) {
469282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        if (parseFloatAttribute(attribute, value, mValue, requireUnit)) {
470282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            return mValue;
471282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        }
472282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
473282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        return null;
474282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    }
475282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
476282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    /**
477282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski     * Parse a float attribute and return the parsed value into a given TypedValue.
478282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski     * @param attribute the name of the attribute. Can be null if <var>requireUnit</var> is false.
479282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski     * @param value the string value of the attribute
480282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski     * @param outValue the TypedValue to receive the parsed value
481282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski     * @param requireUnit whether the value is expected to contain a unit.
482282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski     * @return true if success.
483282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski     */
484171804201dd556f8ce7ee7618661a5c8ee71507aDeepanshu Gupta    public static boolean parseFloatAttribute(String attribute, @NonNull String value,
485282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            TypedValue outValue, boolean requireUnit) {
4861a12b805698c7cba9c2daa78c76c055afbdfa9fcDeepanshu Gupta        assert !requireUnit || attribute != null;
487282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
488282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        // remove the space before and after
489282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        value = value.trim();
490282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        int len = value.length();
491282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
492282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        if (len <= 0) {
493282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            return false;
494282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        }
495282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
496282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        // check that there's no non ascii characters.
497282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        char[] buf = value.toCharArray();
498282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        for (int i = 0 ; i < len ; i++) {
499282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            if (buf[i] > 255) {
500282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                return false;
501282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            }
502282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        }
503282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
504282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        // check the first character
505458f2a7bbbcc45d12b575fe9f3b2f8e1a20f9b1cDeepanshu Gupta        if ((buf[0] < '0' || buf[0] > '9') && buf[0] != '.' && buf[0] != '-' && buf[0] != '+') {
506282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            return false;
507282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        }
508282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
509282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        // now look for the string that is after the float...
510282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        Matcher m = sFloatPattern.matcher(value);
511282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        if (m.matches()) {
512282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            String f_str = m.group(1);
513282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            String end = m.group(2);
514282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
515282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            float f;
516282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            try {
517282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                f = Float.parseFloat(f_str);
518282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            } catch (NumberFormatException e) {
519282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                // this shouldn't happen with the regexp above.
520282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                return false;
521282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            }
522282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
523282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            if (end.length() > 0 && end.charAt(0) != ' ') {
524282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                // Might be a unit...
525282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                if (parseUnit(end, outValue, sFloatOut)) {
526282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    computeTypedValue(outValue, f, sFloatOut[0]);
527282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    return true;
528282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                }
529282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                return false;
530282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            }
531282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
532282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            // make sure it's only spaces at the end.
533282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            end = end.trim();
534282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
535282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            if (end.length() == 0) {
536282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                if (outValue != null) {
5371a12b805698c7cba9c2daa78c76c055afbdfa9fcDeepanshu Gupta                    if (!requireUnit) {
538282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                        outValue.type = TypedValue.TYPE_FLOAT;
539282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                        outValue.data = Float.floatToIntBits(f);
540282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    } else {
541282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                        // no unit when required? Use dp and out an error.
542282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                        applyUnit(sUnitNames[1], outValue, sFloatOut);
543282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                        computeTypedValue(outValue, f, sFloatOut[0]);
544282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
545282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                        Bridge.getLog().error(LayoutLog.TAG_RESOURCES_RESOLVE,
546282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                                String.format(
547282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                                        "Dimension \"%1$s\" in attribute \"%2$s\" is missing unit!",
548282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                                        value, attribute),
549282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                                null);
550282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    }
551282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                    return true;
552282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                }
553282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            }
554282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        }
555282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
556282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        return false;
557282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    }
558282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
559282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    private static void computeTypedValue(TypedValue outValue, float value, float scale) {
560282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        value *= scale;
561282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        boolean neg = value < 0;
562282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        if (neg) {
563282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            value = -value;
564282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        }
565282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        long bits = (long)(value*(1<<23)+.5f);
566282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        int radix;
567282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        int shift;
568282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        if ((bits&0x7fffff) == 0) {
569282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            // Always use 23p0 if there is no fraction, just to make
570282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            // things easier to read.
571282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            radix = TypedValue.COMPLEX_RADIX_23p0;
572282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            shift = 23;
573282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        } else if ((bits&0xffffffffff800000L) == 0) {
574282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            // Magnitude is zero -- can fit in 0 bits of precision.
575282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            radix = TypedValue.COMPLEX_RADIX_0p23;
576282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            shift = 0;
577282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        } else if ((bits&0xffffffff80000000L) == 0) {
578282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            // Magnitude can fit in 8 bits of precision.
579282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            radix = TypedValue.COMPLEX_RADIX_8p15;
580282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            shift = 8;
581282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        } else if ((bits&0xffffff8000000000L) == 0) {
582282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            // Magnitude can fit in 16 bits of precision.
583282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            radix = TypedValue.COMPLEX_RADIX_16p7;
584282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            shift = 16;
585282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        } else {
586282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            // Magnitude needs entire range, so no fractional part.
587282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            radix = TypedValue.COMPLEX_RADIX_23p0;
588282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            shift = 23;
589282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        }
590282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        int mantissa = (int)(
591282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            (bits>>shift) & TypedValue.COMPLEX_MANTISSA_MASK);
592282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        if (neg) {
593282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            mantissa = (-mantissa) & TypedValue.COMPLEX_MANTISSA_MASK;
594282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        }
595282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        outValue.data |=
596282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            (radix<<TypedValue.COMPLEX_RADIX_SHIFT)
597282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            | (mantissa<<TypedValue.COMPLEX_MANTISSA_SHIFT);
598282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    }
599282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
600282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    private static boolean parseUnit(String str, TypedValue outValue, float[] outScale) {
601282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        str = str.trim();
602282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
603282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        for (UnitEntry unit : sUnitNames) {
604282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            if (unit.name.equals(str)) {
605282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                applyUnit(unit, outValue, outScale);
606282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski                return true;
607282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski            }
608282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        }
609282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
610282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        return false;
611282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    }
612282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
613282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    private static void applyUnit(UnitEntry unit, TypedValue outValue, float[] outScale) {
614282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        outValue.type = unit.type;
6151a12b805698c7cba9c2daa78c76c055afbdfa9fcDeepanshu Gupta        // COMPLEX_UNIT_SHIFT is 0 and hence intelliJ complains about it. Suppress the warning.
6161a12b805698c7cba9c2daa78c76c055afbdfa9fcDeepanshu Gupta        //noinspection PointlessBitwiseExpression
617282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        outValue.data = unit.unit << TypedValue.COMPLEX_UNIT_SHIFT;
618282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski        outScale[0] = unit.scale;
619282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski    }
620282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski}
621282e181b58cf72b6ca770dc7ca5f91f135444502Adam Lesinski
622