File indexing completed on 2024-05-12 04:21:26

0001 /*
0002    Copyright (c) 2003-2007 Clarence Dang <dang@kde.org>
0003    Copyright (c) 2017      Martin Koller <kollix@aon.at>
0004    All rights reserved.
0005 
0006    Redistribution and use in source and binary forms, with or without
0007    modification, are permitted provided that the following conditions
0008    are met:
0009 
0010    1. Redistributions of source code must retain the above copyright
0011       notice, this list of conditions and the following disclaimer.
0012    2. Redistributions in binary form must reproduce the above copyright
0013       notice, this list of conditions and the following disclaimer in the
0014       documentation and/or other materials provided with the distribution.
0015 
0016    THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
0017    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
0018    OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
0019    IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
0020    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
0021    NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
0022    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
0023    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
0024    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
0025    THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
0026 */
0027 
0028 
0029 #include "kpToolEllipse.h"
0030 #include "environments/tools/kpToolEnvironment.h"
0031 #include "imagelib/kpColor.h"
0032 
0033 #include <KLocalizedString>
0034 
0035 #include <QPainter>
0036 #include <QPen>
0037 #include <QBrush>
0038 
0039 //---------------------------------------------------------------------
0040 
0041 kpToolEllipse::kpToolEllipse (kpToolEnvironment *environ, QObject *parent)
0042     : kpToolRectangularBase (i18n ("Ellipse"),
0043         i18n ("Draws ellipses and circles"),
0044         &kpToolEllipse::drawEllipse,
0045         Qt::Key_E,
0046         environ, parent, QStringLiteral("tool_ellipse"))
0047 {
0048 }
0049 
0050 //---------------------------------------------------------------------
0051 
0052 void kpToolEllipse::drawEllipse(kpImage *image,
0053         int x, int y, int width, int height,
0054         const kpColor &fcolor, int penWidth,
0055         const kpColor &bcolor)
0056 {
0057   if ( (width == 0) || (height == 0) ) {
0058     return;
0059   }
0060 
0061   QPainter painter(image);
0062   painter.setRenderHint(QPainter::Antialiasing, kpToolEnvironment::drawAntiAliased);
0063 
0064   if ( ((2 * penWidth) > width) || ((2 * penWidth) > height) ) {
0065     penWidth = qMin(width, height) / 2;
0066   }
0067 
0068   painter.setPen(QPen(fcolor.toQColor(), penWidth));
0069 
0070   if ( bcolor.isValid() ) {
0071     painter.setBrush(QBrush(bcolor.toQColor()));
0072   }
0073   else {
0074     painter.setBrush(Qt::NoBrush);
0075   }
0076 
0077   int offset = painter.testRenderHint(QPainter::Antialiasing) ? 1 : 0;
0078 
0079   painter.drawEllipse(
0080         x + penWidth / 2 + offset,
0081         y + penWidth / 2 + offset,
0082         qMax(1, width - penWidth - offset),
0083         qMax(1, height - penWidth - offset));
0084 }
0085 
0086 //---------------------------------------------------------------------
0087 
0088 #include "moc_kpToolEllipse.cpp"