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ImageStripDOMGlyphRenderer.java
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ImageStripDOMGlyphRenderer.java
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/*
* Copyright 2018 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.widgets.components.glyph;
import java.util.function.BiFunction;
import javax.annotation.PreDestroy;
import javax.enterprise.context.Dependent;
import javax.inject.Inject;
import com.google.gwt.user.client.ui.FlowPanel;
import org.jboss.errai.common.client.api.IsElement;
import org.jboss.errai.ioc.client.api.ManagedInstance;
import org.kie.workbench.common.stunner.core.client.components.glyph.DOMGlyphRenderer;
import org.kie.workbench.common.stunner.core.client.components.views.WidgetElementRendererView;
import org.kie.workbench.common.stunner.core.client.shape.ImageStrip;
import org.kie.workbench.common.stunner.core.client.shape.ImageStripGlyph;
import org.kie.workbench.common.stunner.core.client.shape.ImageStripRegistry;
@Dependent
public class ImageStripDOMGlyphRenderer implements DOMGlyphRenderer<ImageStripGlyph> {
private final ImageStripRegistry stripRegistry;
private final ManagedInstance<WidgetElementRendererView> views;
private final BiFunction<String, Integer[], FlowPanel> panelBuilder;
@Inject
public ImageStripDOMGlyphRenderer(final ImageStripRegistry stripRegistry,
final ManagedInstance<WidgetElementRendererView> views) {
this(stripRegistry,
views,
(className, clip) -> buildPanel(className,
clip[0],
clip[1]));
}
ImageStripDOMGlyphRenderer(final ImageStripRegistry stripRegistry,
final ManagedInstance<WidgetElementRendererView> views,
final BiFunction<String, Integer[], FlowPanel> panelBuilder) {
this.stripRegistry = stripRegistry;
this.views = views;
this.panelBuilder = panelBuilder;
}
@Override
public Class<ImageStripGlyph> getGlyphType() {
return ImageStripGlyph.class;
}
@Override
public IsElement render(final ImageStripGlyph glyph,
final double width,
final double height) {
final ImageStrip strip = stripRegistry.get(glyph.getStripType());
final int index = glyph.getIndex();
final boolean isHorizontal = ImageStrip.Orientation.HORIZONTAL.equals(strip.getOrientation());
final int clipX = isHorizontal ? (strip.getWide() + strip.getPadding()) * index : 0;
final int clipY = !isHorizontal ? (strip.getHigh() + strip.getPadding()) * index : 0;
final WidgetElementRendererView view = views.get();
strip.getCss().getCssResource().ensureInjected();
view.setWidget(panelBuilder.apply(strip.getCss().getClassName(),
new Integer[]{clipX, clipY * -1}));
return view;
}
@PreDestroy
public void destroy() {
views.destroyAll();
}
private static FlowPanel buildPanel(final String className,
final int clipX,
final int clipY) {
final FlowPanel panel = new FlowPanel();
panel.addStyleName(className);
panel.getElement().setAttribute("style", "background-position: " + clipX + "px " + clipY + "px !important");
return panel;
}
}