gwt.g3d.resources.ExternalTexture2DResourceGenerator.java Source code

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Here is the source code for gwt.g3d.resources.ExternalTexture2DResourceGenerator.java

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/*
 * Copyright 2009 Hao Nguyen
 * 
 * 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 gwt.g3d.resources;

import gwt.g2d.resources.ExternalImageResourceGenerator;
import gwt.g2d.resources.client.ImageElementResource;
import gwt.g3d.client.gl2.enums.TextureMagFilter;
import gwt.g3d.client.gl2.enums.TextureMinFilter;
import gwt.g3d.client.gl2.enums.TextureWrapMode;
import gwt.g3d.client.texture.Texture2D;
import gwt.g3d.resources.client.GenerateMipmap;
import gwt.g3d.resources.client.MagFilter;
import gwt.g3d.resources.client.MinFilter;
import gwt.g3d.resources.client.Texture2DResource;
import gwt.g3d.resources.client.WrapMode;
import gwt.g3d.resources.client.impl.AbstractExternalTexture2DResource;
import gwt.g3d.resources.client.impl.AbstractTexture2DResource;

import com.google.gwt.core.ext.TreeLogger;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.core.ext.typeinfo.JMethod;
import com.google.gwt.resources.client.ResourceCallback;
import com.google.gwt.resources.ext.AbstractResourceGenerator;
import com.google.gwt.resources.ext.ResourceContext;
import com.google.gwt.user.rebind.SourceWriter;
import com.google.gwt.user.rebind.StringSourceWriter;

/**
 * Generator for {@link AbstractExternalTexture2DResource}.
 * 
 * @author hao1300@gmail.com
 */
public final class ExternalTexture2DResourceGenerator extends AbstractResourceGenerator {

    @Override
    public String createAssignment(TreeLogger logger, ResourceContext context, JMethod method)
            throws UnableToCompleteException {

        SourceWriter sw = new StringSourceWriter();
        sw.println(String.format("new %s() {", AbstractExternalTexture2DResource.class.getName()));
        sw.indent();

        // Creates method: void getTexture(ResourceCallback<Texture2DResource>);
        sw.println(String.format("public void getTexture(%s<%s> textureResource) {",
                ResourceCallback.class.getName(), Texture2DResource.class.getName()));
        sw.indent();
        String externalImageResourceObjectSrc = new ExternalImageResourceGenerator().createAssignment(logger,
                context, method);
        sw.println(String.format("getTexture(%s, textureResource);", externalImageResourceObjectSrc));
        sw.outdent();
        sw.println("}");

        // Creates method: void onImageLoaded(ImageElementResource,
        //         ResourceCallback<Texture2DResource>);
        sw.println(String.format("protected void onImageLoaded(%s imageResource, %s<%s> textureResource) {",
                ImageElementResource.class.getName(), ResourceCallback.class.getName(),
                Texture2DResource.class.getName()));
        sw.indent();
        sw.println(String.format("textureResource.onSuccess(%s);",
                createAbstractTexture2DImageResource(logger, context, method)));
        sw.outdent();
        sw.println("}");

        // Creates method: String getName();
        sw.println("public String getName() {");
        sw.indent();
        sw.println("return \"" + method.getName() + "\";");
        sw.outdent();
        sw.println("}");

        sw.outdent();
        sw.println("}");

        return sw.toString();
    }

    /**
     * Creates an assignment for an {@link AbstractTexture2DResource} object.
     */
    private String createAbstractTexture2DImageResource(TreeLogger logger, ResourceContext context, JMethod method)
            throws UnableToCompleteException {

        SourceWriter sw = new StringSourceWriter();
        sw.println(String.format("new %s(imageResource) {", AbstractTexture2DResource.class.getName()));
        sw.indent();

        // Creates method: void setTextureParameters(Texture2D);
        String texture2DClassName = Texture2D.class.getName();
        sw.println(String.format("protected void setTextureParameters(%s texture2d) {", texture2DClassName));
        sw.indent();

        // Sets up the parameters as declared.
        {
            MagFilter magFilter = method.getAnnotation(MagFilter.class);
            TextureMagFilter textureMagFilter = magFilter != null ? magFilter.value() : TextureMagFilter.LINEAR;
            sw.println(String.format("texture2d.setMagFilter(%s.%s);", TextureMagFilter.class.getName(),
                    textureMagFilter));
        }

        {
            MinFilter minFilter = method.getAnnotation(MinFilter.class);
            TextureMinFilter textureMinFilter = minFilter != null ? minFilter.value() : TextureMinFilter.LINEAR;
            sw.println(String.format("texture2d.setMinFilter(%s.%s);", TextureMinFilter.class.getName(),
                    textureMinFilter));
        }

        {
            WrapMode wrapMode = method.getAnnotation(WrapMode.class);
            if (wrapMode != null) {
                sw.println(String.format("texture2d.setWrapMode(%s.%s);", TextureWrapMode.class.getName(),
                        wrapMode.value()));
            }
        }

        if (method.getAnnotation(GenerateMipmap.class) != null) {
            sw.println("texture2d.generateMipmap();");
        }
        sw.outdent();
        sw.println("}");

        // Creates method: String getName();
        sw.println("public String getName() {");
        sw.indent();
        sw.println("return \"" + method.getName() + "\";");
        sw.outdent();
        sw.println("}");

        sw.outdent();
        sw.println("}");
        return sw.toString();
    }
}