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/*
* Copyright 2000-2009 JetBrains s.r.o.
*
* 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 com.intellij.codeInsight.javadoc;
import com.intellij.psi.*;
import com.intellij.util.ArrayUtil;
import org.jetbrains.annotations.NotNull;
import java.awt.*;
import java.lang.reflect.Field;
/**
* @author spleaner
*/
public class ColorUtil {
private ColorUtil() {
}
public static String generatePreviewHtml(@NotNull final Color color) {
return String.format("<div style=\"padding: 1px; width: 52px; height: 32px; background-color: #555555;\"><div style=\"width: 50px; height: 30px; background-color: #%s;\"> </div></div>", com.intellij.ui.ColorUtil.toHex(color));
}
public static void appendColorPreview(final PsiVariable variable, final StringBuilder buffer) {
final PsiExpression initializer = variable.getInitializer();
if (initializer != null) {
final PsiType type = initializer.getType();
if (type != null && "java.awt.Color".equals(type.getCanonicalText())) {
if (initializer instanceof PsiNewExpression) {
final PsiExpressionList argumentList = ((PsiNewExpression) initializer).getArgumentList();
if (argumentList != null) {
final PsiExpression[] expressions = argumentList.getExpressions();
int[] values = ArrayUtil.newIntArray(expressions.length);
float[] values2 = new float[expressions.length];
int i = 0;
int j = 0;
final PsiConstantEvaluationHelper helper = JavaPsiFacade.getInstance(initializer.getProject()).getConstantEvaluationHelper();
for (final PsiExpression each : expressions) {
final Object o = helper.computeConstantExpression(each);
if (o instanceof Integer) {
values[i] = ((Integer) o).intValue();
values[i] = values[i] > 255 && expressions.length > 1 ? 255 : values[i] < 0 ? 0 : values[i];
i++;
} else if (o instanceof Float) {
values2[j] = ((Float) o).floatValue();
values2[j] = values2[j] > 1 ? 1 : values2[j] < 0 ? 0 : values2[j];
j++;
}
}
Color c = null;
if (i == expressions.length) {
switch (values.length) {
case 1:
c = new Color(values[0]);
break;
case 3:
c = new Color(values[0], values[1], values[2]);
break;
case 4:
c = new Color(values[0], values[1], values[2], values[3]);
break;
default:
break;
}
} else if (j == expressions.length) {
switch (values2.length) {
case 3:
c = new Color(values2[0], values2[1], values2[2]);
break;
case 4:
c = new Color(values2[0], values2[1], values2[2], values2[3]);
break;
default:
break;
}
}
if (c != null) {
buffer.append(generatePreviewHtml(c));
}
}
} else if (initializer instanceof PsiReferenceExpression) {
final PsiReference reference = initializer.getReference();
if (reference != null) {
final PsiElement psiElement = reference.resolve();
if (psiElement instanceof PsiField) {
final PsiClass psiClass = ((PsiField) psiElement).getContainingClass();
if (psiClass != null && "java.awt.Color".equals(psiClass.getQualifiedName())) {
try {
Field field = Class.forName("java.awt.Color").getField(((PsiField)psiElement).getName());
final Color c = (Color) field.get(null);
buffer.append(generatePreviewHtml(c));
} catch (Exception e) {
// nothing
}
}
}
}
}
}
}
}
}
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