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Commit fe98ad91 authored by TreeHugger Robot's avatar TreeHugger Robot Committed by Android (Google) Code Review
Browse files

Merge "Implement .xml font resource support"

parents 881ba34b ed00bfdf

api/current.txt

+1 −0
Original line number Diff line number Diff line
@@ -10864,6 +10864,7 @@ package android.content.res { 
    method public int getDimensionPixelSize(int, int);

    method public android.graphics.drawable.Drawable getDrawable(int);

    method public float getFloat(int, float);

    method public android.graphics.Typeface getFont(int);

    method public float getFraction(int, int, int, float);

    method public int getIndex(int);

    method public int getIndexCount();

api/system-current.txt

+1 −0
Original line number Diff line number Diff line
@@ -11426,6 +11426,7 @@ package android.content.res { 
    method public int getDimensionPixelSize(int, int);

    method public android.graphics.drawable.Drawable getDrawable(int);

    method public float getFloat(int, float);

    method public android.graphics.Typeface getFont(int);

    method public float getFraction(int, int, int, float);

    method public int getIndex(int);

    method public int getIndexCount();

api/test-current.txt

+1 −0
Original line number Diff line number Diff line
@@ -10898,6 +10898,7 @@ package android.content.res { 
    method public int getDimensionPixelSize(int, int);

    method public android.graphics.drawable.Drawable getDrawable(int);

    method public float getFloat(int, float);

    method public android.graphics.Typeface getFont(int);

    method public float getFraction(int, int, int, float);

    method public int getIndex(int);

    method public int getIndexCount();

core/java/android/annotation/FontRes.java

0 → 100644
+37 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2017 The Android Open Source Project

 *

 * 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 android.annotation;



import java.lang.annotation.Documented;

import java.lang.annotation.Retention;

import java.lang.annotation.Target;



import static java.lang.annotation.ElementType.FIELD;

import static java.lang.annotation.ElementType.METHOD;

import static java.lang.annotation.ElementType.PARAMETER;

import static java.lang.annotation.RetentionPolicy.SOURCE;



/**

 * Denotes that an integer parameter, field or method return value is expected

 * to be a Font resource reference (e.g. R.font.myfont).

 *

 * @hide

 */

@Documented

@Retention(SOURCE)

@Target({METHOD, PARAMETER, FIELD})

public @interface FontRes {

}

core/java/android/content/res/FontResourcesParser.java

0 → 100644
+104 −0
Original line number Diff line number Diff line 
/*

 * Copyright (C) 2017 The Android Open Source Project

 *

 * 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 android.content.res;



import com.android.internal.R;

import android.text.FontConfig;

import android.util.AttributeSet;

import android.util.Xml;



import org.xmlpull.v1.XmlPullParser;

import org.xmlpull.v1.XmlPullParserException;



import java.io.IOException;

import java.util.ArrayList;

import java.util.List;



/**

 * Parser for xml type font resources.

 * @hide

 */

public class FontResourcesParser {

    private static final int NORMAL_WEIGHT = 400;

    private static final String ITALIC = "italic";



    public static FontConfig parse(XmlPullParser parser, Resources resources)

            throws XmlPullParserException, IOException {

        int type;

        while ((type=parser.next()) != XmlPullParser.START_TAG

                && type != XmlPullParser.END_DOCUMENT) {

            // Empty loop.

        }



        if (type != XmlPullParser.START_TAG) {

            throw new XmlPullParserException("No start tag found");

        }

        return readFamilies(parser, resources);

    }



    private static FontConfig readFamilies(XmlPullParser parser, Resources resources)

            throws XmlPullParserException, IOException {

        FontConfig config = new FontConfig();

        parser.require(XmlPullParser.START_TAG, null, "font-family");

        String tag = parser.getName();

        if (tag.equals("font-family")) {

            config.getFamilies().add(readFamily(parser, resources));

        } else {

            skip(parser);

        }

        return config;

    }



    private static FontConfig.Family readFamily(XmlPullParser parser, Resources resources)

            throws XmlPullParserException, IOException {

        List<FontConfig.Font> fonts = new ArrayList<>();

        while (parser.next() != XmlPullParser.END_TAG) {

            if (parser.getEventType() != XmlPullParser.START_TAG) continue;

            String tag = parser.getName();

            if (tag.equals("font")) {

                fonts.add(readFont(parser, resources));

            } else {

                skip(parser);

            }

        }

        return new FontConfig.Family(null, fonts, null, null);

    }



    private static FontConfig.Font readFont(XmlPullParser parser, Resources resources)

            throws XmlPullParserException, IOException {

        AttributeSet attrs = Xml.asAttributeSet(parser);

        TypedArray array = resources.obtainAttributes(attrs, R.styleable.FontFamilyFont);

        int weight = array.getInt(R.styleable.FontFamilyFont_fontWeight, NORMAL_WEIGHT);

        boolean isItalic = ITALIC.equals(array.getString(R.styleable.FontFamilyFont_fontStyle));

        String filename = array.getString(R.styleable.FontFamilyFont_font);

        array.recycle();

        return new FontConfig.Font(filename, 0, null, weight, isItalic);

    }



    private static void skip(XmlPullParser parser) throws XmlPullParserException, IOException {

        int depth = 1;

        while (depth > 0) {

            switch (parser.next()) {

                case XmlPullParser.START_TAG:

                    depth++;

                    break;

                case XmlPullParser.END_TAG:

                    depth--;

                    break;

            }

        }

    }

}