Add abakus

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/abakus@1071969 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 87 insertions, 0 deletions

diff --git a/src/dragsupport.cpp b/src/dragsupport.cpp
new file mode 100644
index 0000000..0a8b875
--- /dev/null
+++ b/src/dragsupport.cpp
@@ -0,0 +1,87 @@
+/*
+ * dragsupport.cpp - part of abakus
+ * Copyright (C) 2004, 2005 Michael Pyne <michael.pyne@kdemail.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02110-1301  USA
+ */
+
+#include <qstring.h>
+#include <qpixmap.h>
+#include <qimage.h>
+#include <qpainter.h>
+#include <qcolor.h>
+#include <qfont.h>
+#include <qbrush.h>
+#include <qfontmetrics.h>
+
+#include "dragsupport.h"
+
+namespace DragSupport
+{
+
+QPixmap makePixmap(const QString &text, const QFont &font)
+{
+    QColor background(234, 178, 230);
+    QFontMetrics fm(font);
+
+    int height = 2 * fm.height();
+    QSize bonusSize (height, 0);
+    QSize size(fm.width(text), height);
+    QImage image(size + bonusSize, 32);
+
+    image.setAlphaBuffer(false);
+    image.fill(0); // All transparent pixels
+    image.setAlphaBuffer(true);
+
+    QPixmap pix(size + bonusSize);
+    pix.fill(Qt::magenta); // Watch for incoming hacks
+
+    QPainter painter(&pix);
+    painter.setFont(font);
+
+    // Outline black, background white
+    painter.setPen(Qt::black);
+    painter.setBrush(background);
+
+    // roundRect is annoying in that the four "pies" in each corner aren't
+    // circular, they're elliptical.  Try to make the radii force it circular
+    // again.
+    painter.drawRoundRect(pix.rect(), 75 * pix.height() / pix.width(), 75);
+
+    // Alias better names for some constants.
+    int textLeft = height / 2;
+
+    // Draw text
+    painter.setPen(Qt::black);
+    painter.drawText(textLeft, height / 4, size.width(), size.height(), 0, text);
+
+    QImage overlay(pix.convertToImage());
+
+    // The images should have the same size, copy pixels from overlay to the
+    // bottom unless the pixel is called magenta.  The pixels we don't copy
+    // are transparent in the QImage, and will remain transparent when
+    // converted to a QPixmap.
+
+    for(int i = 0; i < image.width(); ++i)
+	for(int j = 0; j < image.height(); ++j) {
+	    if(QColor(overlay.pixel(i, j)) != Qt::magenta)
+		image.setPixel(i, j, overlay.pixel(i, j));
+	}
+
+    pix.convertFromImage(image);
+    return pix;
+}
+
+} // DragSupport