LienzoGlyphPaletteItemViewImpl.java

/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates.
 *
 * 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 org.kie.workbench.common.stunner.client.lienzo.components.palette.view.element;

import com.ait.lienzo.client.core.shape.Group;
import com.ait.lienzo.client.core.shape.IPrimitive;
import com.ait.lienzo.client.core.shape.Text;
import org.kie.workbench.common.stunner.client.lienzo.components.palette.view.LienzoPaletteView;
import org.kie.workbench.common.stunner.core.client.components.palette.ClientPaletteUtils;
import org.kie.workbench.common.stunner.core.client.components.palette.model.GlyphPaletteItem;
import org.kie.workbench.common.stunner.core.client.shape.view.glyph.Glyph;

public final class LienzoGlyphPaletteItemViewImpl
        extends AbstractLienzoGlyphPaletteItemView {

    private static final String FONT_FAMILY = "Open Sans";

    protected final Glyph<Group> glyph;
    private final Group view = new Group();
    private Text text;

    public LienzoGlyphPaletteItemViewImpl(final GlyphPaletteItem item,
                                          final LienzoPaletteView paletteView,
                                          final Glyph<Group> glyph) {
        super(item,
              paletteView);
        this.glyph = glyph;
        init();
    }

    public void expand() {
        view.add(this.text);
    }

    public void collapse() {
        view.remove(this.text);
    }

    @Override
    public IPrimitive<?> getView() {
        return view;
    }

    private void init() {
        final String title = item.getTitle();
        final double glyphWidth = glyph.getWidth();
        final double glyphHeight = glyph.getHeight();
        final double fontSize = ClientPaletteUtils.computeFontSize(glyphWidth,
                                                                   glyphHeight,
                                                                   title.length());
        text = new Text(title)
                .setX(glyphWidth + 10)
                .setY(glyphWidth / 2)
                .setFontFamily(FONT_FAMILY)
                .setFontSize(fontSize)
                .setStrokeWidth(1);
        view.add(glyph.getGroup());
    }
}