Java tutorial
package org.ege.widget; /******************************************************************************* * Copyright 2011 See AUTHORS file. * * 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. ******************************************************************************/ import com.badlogic.gdx.Gdx; import com.badlogic.gdx.files.FileHandle; import com.badlogic.gdx.graphics.Color; import com.badlogic.gdx.graphics.g2d.BitmapFont; import com.badlogic.gdx.graphics.g2d.TextureAtlas; import com.badlogic.gdx.graphics.g2d.TextureRegion; import com.badlogic.gdx.math.Vector2; import com.badlogic.gdx.scenes.scene2d.ui.Skin; import com.badlogic.gdx.scenes.scene2d.utils.Drawable; import com.badlogic.gdx.utils.Json; import com.badlogic.gdx.utils.Json.ReadOnlySerializer; import com.badlogic.gdx.utils.ObjectMap; import com.badlogic.gdx.utils.ObjectMap.Entry; import com.badlogic.gdx.utils.SerializationException; /** * @author Nathan Sweet */ public class StyleAtlas extends Skin { public StyleAtlas() { } public StyleAtlas(FileHandle skinFile) { super(skinFile); } public StyleAtlas(FileHandle skinFile, TextureAtlas texture) { super(skinFile, texture); } protected Json getJsonLoader(final FileHandle skinFile) { final Skin skin = this; final Json json = new Json() { public <T> T readValue(Class<T> type, Class elementType, Object jsonData) { // If the JSON is a string but the type is not, look up the actual value by name. if (jsonData instanceof String && !CharSequence.class.isAssignableFrom(type)) return get((String) jsonData, type); return super.readValue(type, elementType, jsonData); } }; json.setTypeName(null); json.setUsePrototypes(false); /* ------------------------------------------------ */ json.setSerializer(Skin.class, new ReadOnlySerializer<Skin>() { public Skin read(Json json, Object jsonData, Class ignored) { ObjectMap<String, ObjectMap> typeToValueMap = (ObjectMap) jsonData; for (Entry<String, ObjectMap> typeEntry : typeToValueMap.entries()) { String className = typeEntry.key; ObjectMap<String, ObjectMap> valueMap = (ObjectMap) typeEntry.value; try { readNamedObjects(json, Class.forName(className), valueMap); } catch (ClassNotFoundException ex) { throw new SerializationException(ex); } } return skin; } private void readNamedObjects(Json json, Class type, ObjectMap<String, ObjectMap> valueMap) { Class addType = type == TintedDrawable.class ? Drawable.class : type; for (Entry<String, ObjectMap> valueEntry : valueMap.entries()) { String name = valueEntry.key; Object object = json.readValue(type, valueEntry.value); if (object == null) continue; try { add(name, object, addType); } catch (Exception ex) { throw new SerializationException( "Error reading " + type.getSimpleName() + ": " + valueEntry.key, ex); } } } }); /* ------------------------------------------------ */ json.setSerializer(BitmapFont.class, new ReadOnlySerializer<BitmapFont>() { public BitmapFont read(Json json, Object jsonData, Class type) { String path = json.readValue("file", String.class, jsonData); FileHandle fontFile = skinFile.parent().child(path); if (!fontFile.exists()) fontFile = Gdx.files.internal(path); if (!fontFile.exists()) throw new SerializationException("Font file not found: " + fontFile); // Use a region with the same name as the font, else use a PNG file in the same directory as the FNT file. String regionName = fontFile.nameWithoutExtension(); try { TextureRegion region = skin.optional(regionName, TextureRegion.class); if (region != null) return new BitmapFont(fontFile, region, false); else { FileHandle imageFile = fontFile.parent().child(regionName + ".png"); if (imageFile.exists()) return new BitmapFont(fontFile, imageFile, false); else return new BitmapFont(fontFile, false); } } catch (RuntimeException ex) { throw new SerializationException("Error loading bitmap font: " + fontFile, ex); } } }); /* ------------------------------------------------ */ json.setSerializer(Color.class, new ReadOnlySerializer<Color>() { public Color read(Json json, Object jsonData, Class type) { if (jsonData instanceof String) return get((String) jsonData, Color.class); ObjectMap map = (ObjectMap) jsonData; float r = json.readValue("r", float.class, 0f, jsonData); float g = json.readValue("g", float.class, 0f, jsonData); float b = json.readValue("b", float.class, 0f, jsonData); float a = json.readValue("a", float.class, 1f, jsonData); return new Color(r, g, b, a); } }); /* ------------------------------------------------ */ json.setSerializer(TintedDrawable.class, new ReadOnlySerializer() { public Object read(Json json, Object jsonData, Class type) { String name = json.readValue("name", String.class, jsonData); Color color = json.readValue("color", Color.class, jsonData); return newDrawable(name, color); } }); /* ------------------------------------------------ */ // json.setSerializer(Orientation.class, new Serializer<Orientation>() { // // @Override // public void write (Json json, Orientation object, Class knownType) { // json.writeObjectStart(); // switch (object) { // case HORIZONTAL: // json.writeValue("orientation", "HORIZONTAL"); // break; // case VERTICAL: // json.writeValue("orientation", "VERTICAL"); // break; // case LANDSCAPE: // json.writeValue("orientation", "LANDSCAPE"); // break; // case PORTRAIT: // json.writeValue("orientation", "PORTRAIT"); // break; // } // json.writeObjectEnd(); // } // // @Override // public Orientation read (Json json, Object jsonData, Class type) { // String ori = (String)jsonData; // ori = ori.toLowerCase(); // if(ori.equals("landscape")) // return Orientation.LANDSCAPE; // else if(ori.equals("portrait")) // return Orientation.PORTRAIT; // else if(ori.equals("vertical")) // return Orientation.VERTICAL; // return Orientation.HORIZONTAL; // } // // }); /* ------------------------------------------------ */ json.setSerializer(Attributes.class, new ReadOnlySerializer<Attributes>() { @Override public Attributes read(Json json, Object jsonData, Class type) { float startX = json.readValue("startX", float.class, (float) 0, jsonData); float startY = json.readValue("startY", float.class, (float) 0, jsonData); float dstX = json.readValue("x", float.class, jsonData); float dstY = json.readValue("y", float.class, jsonData); float width = json.readValue("width", float.class, jsonData); float height = json.readValue("height", float.class, jsonData); Attributes attr = new Attributes(); attr.startX = startX; attr.startY = startY; attr.x = dstX; attr.y = dstY; attr.width = width; attr.height = height; return attr; } }); /* ------------------------------------------------ */ json.setSerializer(ScalingSet.class, new ReadOnlySerializer<ScalingSet>() { @Override public ScalingSet read(Json json, Object jsonData, Class type) { float layoutx = json.readValue("layoutx", float.class, jsonData); float layouty = json.readValue("layouty", float.class, jsonData); float layoutwidth = json.readValue("layoutwidth", float.class, jsonData); float layoutheight = json.readValue("layoutheight", float.class, jsonData); float whratio = json.readValue("whratio", float.class, jsonData); float hwratio = json.readValue("hwratio", float.class, jsonData); return new ScalingSet().set(layoutx, layouty, layoutwidth, layoutheight, whratio, hwratio); } }); /* ------------------------------------------------ */ json.setSerializer(Vector2.class, new ReadOnlySerializer<Vector2>() { @Override public Vector2 read(Json json, Object jsonData, Class type) { return new Vector2(json.readValue("x", float.class, jsonData), json.readValue("y", float.class, jsonData)); } }); return json; } }