/*
* This file is part of lanterna (http://code.google.com/p/lanterna/).
*
* lanterna is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright (C) 2010-2017 Martin Berglund
*/
package com.googlecode.lanterna.gui2;
import com.googlecode.lanterna.*;
import com.googlecode.lanterna.graphics.ThemeDefinition;
import com.googlecode.lanterna.graphics.ThemedTextGraphics;
/**
* This WindowPostRenderer implementation draws a shadow under the window
*
* @author Martin
*/
public class WindowShadowRenderer implements WindowPostRenderer {
@Override
public void postRender(
ThemedTextGraphics textGraphics,
TextGUI textGUI,
Window window) {
TerminalPosition windowPosition = window.getPosition();
TerminalSize decoratedWindowSize = window.getDecoratedSize();
ThemeDefinition themeDefinition = window.getTheme().getDefinition(WindowShadowRenderer.class);
textGraphics.applyThemeStyle(themeDefinition.getNormal());
char filler = themeDefinition.getCharacter("FILLER", Symbols.BLOCK_SOLID);
boolean useDoubleWidth = themeDefinition.getBooleanProperty("DOUBLE_WIDTH", true);
boolean useTransparency = themeDefinition.getBooleanProperty("TRANSPARENT", false);
TerminalPosition lowerLeft = windowPosition.withRelativeColumn(useDoubleWidth ? 2 : 1).withRelativeRow(decoratedWindowSize.getRows());
TerminalPosition lowerRight = lowerLeft.withRelativeColumn(decoratedWindowSize.getColumns() - (useDoubleWidth ? 3 : 2));
for(int column = lowerLeft.getColumn(); column <= lowerRight.getColumn(); column++) {
char characterToDraw = filler;
if(useTransparency) {
TextCharacter tc = textGraphics.getCharacter(column, lowerLeft.getRow());
if (tc != null) { characterToDraw = tc.getCharacter(); }
}
textGraphics.setCharacter(column, lowerLeft.getRow(), characterToDraw);
}
lowerRight = lowerRight.withRelativeColumn(1);
TerminalPosition upperRight = lowerRight.withRelativeRow(-decoratedWindowSize.getRows() + 1);
for(int row = upperRight.getRow(); row <= lowerRight.getRow(); row++) {
char characterToDraw = filler;
if(useTransparency) {
TextCharacter tc = textGraphics.getCharacter(upperRight.getColumn(), row);
if (tc != null) { characterToDraw = tc.getCharacter(); }
}
textGraphics.setCharacter(upperRight.getColumn(), row, characterToDraw);
}
if(useDoubleWidth) {
//Fill the remaining hole
upperRight = upperRight.withRelativeColumn(1);
for(int row = upperRight.getRow(); row <= lowerRight.getRow(); row++) {
char characterToDraw = filler;
if(useTransparency) {
TextCharacter tc = textGraphics.getCharacter(upperRight.getColumn(), row);
if (tc != null) { characterToDraw = tc.getCharacter(); }
}
textGraphics.setCharacter(upperRight.getColumn(), row, characterToDraw);
}
}
}
}