/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.pdfbox.debugger.streampane.tooltip;
import java.util.ArrayList;
import java.util.List;
import javax.swing.text.BadLocationException;
import javax.swing.text.JTextComponent;
import javax.swing.text.Utilities;
import org.apache.pdfbox.pdmodel.PDResources;
interface ToolTip
{
String getToolTipText();
}
/**
* @author Khyrul Bashar
* A class that provieds the tooltip for an operator.
*/
public class ToolTipController
{
private static final String FONT_OPERATOR = "Tf";
private static final String STROKING_COLOR = "SCN";
private static final String STROKING_COLOR_SPACE = "CS";
private static final String NON_STROKING_COLOR_SPACE = "cs";
private static final String NON_STROKING_COLOR = "scn";
private static final String RGB_STROKING_COLOR = "RG";
private static final String RGB_NON_STROKING_COLOR = "rg";
private static final String CMYK_STROKING_COLOR = "K";
private static final String CMYK_NON_STROKING_COLOR = "k";
private static final String GRAY_STROKING_COLOR = "G";
private static final String GRAY_NON_STROKING_COLOR = "g";
private final PDResources resources;
private JTextComponent textComponent;
/**
* Constructor.
* @param resources PDResources instance.
*/
public ToolTipController(PDResources resources)
{
this.resources = resources;
}
static List<String> getWords(String str)
{
List<String> words = new ArrayList<>();
for (String string : str.trim().split(" "))
{
string = string.trim();
if (!string.isEmpty() && !string.equals("\n"))
{
words.add(string);
}
}
return words;
}
/**
* Returns the tooltip text for the operator. null if there isn't any tooltip.
* @param offset The position of the mouse in the text component.
* @param textComponent JTextComponent instance.
* @return Tooltip text, String instance.
*/
public String getToolTip(int offset, JTextComponent textComponent)
{
this.textComponent = textComponent;
String word = getWord(offset);
String rowText = getRowText(offset);
if (word != null)
{
ToolTip toolTip;
if (word.equals(FONT_OPERATOR))
{
toolTip = new FontToolTip(resources, rowText);
return toolTip.getToolTipText();
}
else if (word.equals(STROKING_COLOR))
{
String colorSpaceName = findColorSpace(offset, STROKING_COLOR_SPACE);
if (colorSpaceName != null)
{
toolTip = new SCNToolTip(resources, colorSpaceName, rowText);
return toolTip.getToolTipText();
}
}
else if (word.equals(NON_STROKING_COLOR))
{
String colorSpaceName = findColorSpace(offset, NON_STROKING_COLOR_SPACE);
if (colorSpaceName != null)
{
toolTip = new SCNToolTip(resources, colorSpaceName, rowText);
return toolTip.getToolTipText();
}
}
else if (word.equals(RGB_STROKING_COLOR) || word.equals(RGB_NON_STROKING_COLOR))
{
toolTip = new RGToolTip(rowText);
return toolTip.getToolTipText();
}
else if (word.equals(CMYK_STROKING_COLOR) || word.equals(CMYK_NON_STROKING_COLOR))
{
toolTip = new KToolTip(rowText);
return toolTip.getToolTipText();
}
else if (word.equals(GRAY_STROKING_COLOR) || word.equals(GRAY_NON_STROKING_COLOR))
{
toolTip = new GToolTip(rowText);
return toolTip.getToolTipText();
}
}
return null;
}
private String findColorSpace(int offset, String colorSpaceType)
{
try
{
while (offset != -1)
{
offset = Utilities.getPositionAbove(textComponent, offset, 0);
String previousRowText = getRowText(offset);
if (previousRowText == null)
{
return null;
}
previousRowText = previousRowText.trim();
if (isColorSpace(colorSpaceType, previousRowText))
{
return previousRowText.split(" ")[0];
}
}
}
catch (BadLocationException e)
{
e.printStackTrace();
return null;
}
return null;
}
private boolean isColorSpace(String colorSpaceType, String rowText)
{
List<String> words = getWords(rowText);
return words.size() == 2 && words.get(1).equals(colorSpaceType);
}
private String getWord(int offset)
{
try
{
int start = Utilities.getWordStart(textComponent, offset);
int end = Utilities.getWordEnd(textComponent, offset);
return textComponent.getDocument().getText(start, end - start + 1).trim();
}
catch (BadLocationException e)
{
e.printStackTrace();
}
return null;
}
private String getRowText(int offset)
{
try
{
int rowStart = Utilities.getRowStart(textComponent, offset);
int rowEnd = Utilities.getRowEnd(textComponent, offset);
return textComponent.getDocument().getText(rowStart, rowEnd - rowStart + 1);
}
catch (BadLocationException e)
{
e.printStackTrace();
}
return null;
}
}