/*
* Copyright 2015 MovingBlocks
*
* 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.terasology.rendering.nui.widgets.browser.data.html.basic.list;
import org.terasology.math.geom.Rect2i;
import org.terasology.math.geom.Vector2i;
import org.terasology.rendering.assets.font.Font;
import org.terasology.rendering.nui.Canvas;
import org.terasology.rendering.nui.HorizontalAlign;
import org.terasology.rendering.nui.widgets.browser.data.ParagraphData;
import org.terasology.rendering.nui.widgets.browser.data.basic.flow.ContainerRenderSpace;
import org.terasology.rendering.nui.widgets.browser.data.html.basic.DefaultParagraphData;
import org.terasology.rendering.nui.widgets.browser.ui.ParagraphRenderable;
import org.terasology.rendering.nui.widgets.browser.ui.style.FallbackParagraphRenderStyle;
import org.terasology.rendering.nui.widgets.browser.ui.style.ParagraphRenderStyle;
public class OrderedListDecorator implements ListDecorator {
private static final int LEFT_INDENT = 3;
private static final int RIGHT_INDENT = 3;
private int paragraphsCount;
private Integer maxIndentCache;
@Override
public ParagraphData wrapParagraph(ParagraphData paragraphData) {
DefaultParagraphData defaultParagraphData = new DefaultParagraphData(paragraphData.getParagraphRenderStyle(),
new OrderedListParagraphRenderable(paragraphsCount, paragraphData));
paragraphsCount++;
return defaultParagraphData;
}
private int getMaxIndent(Font font) {
if (maxIndentCache == null) {
int minWidth = 0;
for (int i = 0; i < paragraphsCount; i++) {
minWidth = Math.max(minWidth, font.getWidth((i + 1) + "."));
}
maxIndentCache = LEFT_INDENT + minWidth + RIGHT_INDENT;
}
return maxIndentCache;
}
private final class OrderedListParagraphRenderable implements ParagraphRenderable {
private int index;
private ParagraphData paragraphData;
private OrderedListParagraphRenderable(int index, ParagraphData paragraphData) {
this.index = index;
this.paragraphData = paragraphData;
}
@Override
public int getContentsMinWidth(ParagraphRenderStyle defaultStyle) {
FallbackParagraphRenderStyle fallbackStyle = new FallbackParagraphRenderStyle(defaultStyle, paragraphData.getParagraphRenderStyle());
Font font = fallbackStyle.getFont(false);
int maxIndent = getMaxIndent(font);
return maxIndent + paragraphData.getParagraphContents().getContentsMinWidth(fallbackStyle);
}
@Override
public int getPreferredContentsHeight(ParagraphRenderStyle defaultStyle, int yStart, ContainerRenderSpace containerRenderSpace, int sideIndents) {
FallbackParagraphRenderStyle fallbackStyle = new FallbackParagraphRenderStyle(defaultStyle, paragraphData.getParagraphRenderStyle());
Font font = fallbackStyle.getFont(false);
int maxIndent = getMaxIndent(font);
return paragraphData.getParagraphContents().getPreferredContentsHeight(fallbackStyle, yStart, containerRenderSpace, sideIndents + maxIndent);
}
@Override
public void renderContents(Canvas canvas, Vector2i startPos, ContainerRenderSpace containerRenderSpace,
int leftIndent, int rightIndent, ParagraphRenderStyle defaultStyle, HorizontalAlign horizontalAlign,
HyperlinkRegister hyperlinkRegister) {
FallbackParagraphRenderStyle fallbackStyle = new FallbackParagraphRenderStyle(defaultStyle, paragraphData.getParagraphRenderStyle());
Font font = fallbackStyle.getFont(false);
int advance = containerRenderSpace.getAdvanceForVerticalPosition(startPos.y);
String text = (index + 1) + ".";
Rect2i bounds = Rect2i.createFromMinAndSize(startPos.x + leftIndent + advance, startPos.y, font.getWidth(text), font.getLineHeight());
canvas.drawTextRaw(text, font, fallbackStyle.getColor(false), bounds);
int maxIndent = getMaxIndent(font);
paragraphData.getParagraphContents().renderContents(canvas, startPos, containerRenderSpace,
leftIndent + maxIndent, rightIndent, fallbackStyle, horizontalAlign, hyperlinkRegister);
}
}
}