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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commitce4a32fe52ef09d8f5ff1dd22c001110902b60a2 (patch)
tree5ac38a06f3dde268dc7927dc155896926aaf7012 /kdecore/kiconeffect.cpp
downloadtdelibs-ce4a32fe52ef09d8f5ff1dd22c001110902b60a2.tar.gz
tdelibs-ce4a32fe52ef09d8f5ff1dd22c001110902b60a2.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdelibs@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
Diffstat (limited to 'kdecore/kiconeffect.cpp')
-rw-r--r--kdecore/kiconeffect.cpp770
1 files changed, 770 insertions, 0 deletions
diff --git a/kdecore/kiconeffect.cpp b/kdecore/kiconeffect.cpp
new file mode 100644
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--- /dev/null
+++ b/kdecore/kiconeffect.cpp
@@ -0,0 +1,770 @@
+/* vi: ts=8 sts=4 sw=4
+ * $Id$
+ *
+ * This file is part of the KDE project, module kdecore.
+ * Copyright (C) 2000 Geert Jansen <jansen@kde.org>
+ * with minor additions and based on ideas from
+ * Torsten Rahn <torsten@kde.org>
+ *
+ * This is free software; it comes under the GNU Library General
+ * Public License, version 2. See the file "COPYING.LIB" for the
+ * exact licensing terms.
+ */
+
+#include <config.h>
+#include <unistd.h>
+#include <math.h>
+
+#include <qstring.h>
+#include <qstringlist.h>
+#include <qbitmap.h>
+#include <qpixmap.h>
+#include <qimage.h>
+#include <qcolor.h>
+#include <qwidget.h>
+#include <qpainter.h>
+#include <qpen.h>
+
+#include <kdebug.h>
+#include <kglobal.h>
+#include <kconfig.h>
+#include <kglobalsettings.h>
+#include <kicontheme.h>
+#include "kiconeffect.h"
+
+#if defined(Q_WS_WIN) || defined(Q_WS_MACX)
+static bool qt_use_xrender=true;
+static bool qt_has_xft=true;
+#else
+extern bool qt_use_xrender;
+extern bool qt_has_xft;
+#endif
+class KIconEffectPrivate
+{
+public:
+ QString mKey[6][3];
+ QColor mColor2[6][3];
+};
+
+KIconEffect::KIconEffect()
+{
+ d = new KIconEffectPrivate;
+ init();
+}
+
+KIconEffect::~KIconEffect()
+{
+ delete d;
+ d = 0L;
+}
+
+void KIconEffect::init()
+{
+ KConfig *config = KGlobal::config();
+
+ int i, j, effect=-1;
+ QStringList groups;
+ groups += "Desktop";
+ groups += "Toolbar";
+ groups += "MainToolbar";
+ groups += "Small";
+ groups += "Panel";
+
+ QStringList states;
+ states += "Default";
+ states += "Active";
+ states += "Disabled";
+
+ QStringList::ConstIterator it, it2;
+ QString _togray("togray");
+ QString _colorize("colorize");
+ QString _desaturate("desaturate");
+ QString _togamma("togamma");
+ QString _none("none");
+ QString _tomonochrome("tomonochrome");
+
+ KConfigGroupSaver cs(config, "default");
+
+ for (it=groups.begin(), i=0; it!=groups.end(); it++, i++)
+ {
+ // Default effects
+ mEffect[i][0] = NoEffect;
+ mEffect[i][1] = ((i==0)||(i==4)) ? ToGamma : NoEffect;
+ mEffect[i][2] = ToGray;
+
+ mTrans[i][0] = false;
+ mTrans[i][1] = false;
+ mTrans[i][2] = true;
+ mValue[i][0] = 1.0;
+ mValue[i][1] = ((i==0)||(i==4)) ? 0.7 : 1.0;
+ mValue[i][2] = 1.0;
+ mColor[i][0] = QColor(144,128,248);
+ mColor[i][1] = QColor(169,156,255);
+ mColor[i][2] = QColor(34,202,0);
+ d->mColor2[i][0] = QColor(0,0,0);
+ d->mColor2[i][1] = QColor(0,0,0);
+ d->mColor2[i][2] = QColor(0,0,0);
+
+ config->setGroup(*it + "Icons");
+ for (it2=states.begin(), j=0; it2!=states.end(); it2++, j++)
+ {
+ QString tmp = config->readEntry(*it2 + "Effect");
+ if (tmp == _togray)
+ effect = ToGray;
+ else if (tmp == _colorize)
+ effect = Colorize;
+ else if (tmp == _desaturate)
+ effect = DeSaturate;
+ else if (tmp == _togamma)
+ effect = ToGamma;
+ else if (tmp == _tomonochrome)
+ effect = ToMonochrome;
+ else if (tmp == _none)
+ effect = NoEffect;
+ else
+ continue;
+ if(effect != -1)
+ mEffect[i][j] = effect;
+ mValue[i][j] = config->readDoubleNumEntry(*it2 + "Value");
+ mColor[i][j] = config->readColorEntry(*it2 + "Color");
+ d->mColor2[i][j] = config->readColorEntry(*it2 + "Color2");
+ mTrans[i][j] = config->readBoolEntry(*it2 + "SemiTransparent");
+
+ }
+ }
+}
+
+bool KIconEffect::hasEffect(int group, int state) const
+{
+ return mEffect[group][state] != NoEffect;
+}
+
+QString KIconEffect::fingerprint(int group, int state) const
+{
+ if ( group >= KIcon::LastGroup ) return "";
+ QString cached = d->mKey[group][state];
+ if (cached.isEmpty())
+ {
+ QString tmp;
+ cached = tmp.setNum(mEffect[group][state]);
+ cached += ':';
+ cached += tmp.setNum(mValue[group][state]);
+ cached += ':';
+ cached += mTrans[group][state] ? QString::fromLatin1("trans")
+ : QString::fromLatin1("notrans");
+ if (mEffect[group][state] == Colorize || mEffect[group][state] == ToMonochrome)
+ {
+ cached += ':';
+ cached += mColor[group][state].name();
+ }
+ if (mEffect[group][state] == ToMonochrome)
+ {
+ cached += ':';
+ cached += d->mColor2[group][state].name();
+ }
+
+ d->mKey[group][state] = cached;
+ }
+
+ return cached;
+}
+
+QImage KIconEffect::apply(QImage image, int group, int state) const
+{
+ if (state >= KIcon::LastState)
+ {
+ kdDebug(265) << "Illegal icon state: " << state << "\n";
+ return image;
+ }
+ if (group >= KIcon::LastGroup)
+ {
+ kdDebug(265) << "Illegal icon group: " << group << "\n";
+ return image;
+ }
+ return apply(image, mEffect[group][state], mValue[group][state],
+ mColor[group][state], d->mColor2[group][state], mTrans[group][state]);
+}
+
+QImage KIconEffect::apply(QImage image, int effect, float value, const QColor col, bool trans) const
+{
+ return apply (image, effect, value, col, KGlobalSettings::baseColor(), trans);
+}
+
+QImage KIconEffect::apply(QImage image, int effect, float value, const QColor col, const QColor col2, bool trans) const
+{
+ if (effect >= LastEffect )
+ {
+ kdDebug(265) << "Illegal icon effect: " << effect << "\n";
+ return image;
+ }
+ if (value > 1.0)
+ value = 1.0;
+ else if (value < 0.0)
+ value = 0.0;
+ switch (effect)
+ {
+ case ToGray:
+ toGray(image, value);
+ break;
+ case DeSaturate:
+ deSaturate(image, value);
+ break;
+ case Colorize:
+ colorize(image, col, value);
+ break;
+ case ToGamma:
+ toGamma(image, value);
+ break;
+ case ToMonochrome:
+ toMonochrome(image, col, col2, value);
+ break;
+ }
+ if (trans == true)
+ {
+ semiTransparent(image);
+ }
+ return image;
+}
+
+QPixmap KIconEffect::apply(QPixmap pixmap, int group, int state) const
+{
+ if (state >= KIcon::LastState)
+ {
+ kdDebug(265) << "Illegal icon state: " << state << "\n";
+ return pixmap;
+ }
+ if (group >= KIcon::LastGroup)
+ {
+ kdDebug(265) << "Illegal icon group: " << group << "\n";
+ return pixmap;
+ }
+ return apply(pixmap, mEffect[group][state], mValue[group][state],
+ mColor[group][state], d->mColor2[group][state], mTrans[group][state]);
+}
+
+QPixmap KIconEffect::apply(QPixmap pixmap, int effect, float value,
+ const QColor col, bool trans) const
+{
+ return apply (pixmap, effect, value, col, KGlobalSettings::baseColor(), trans);
+}
+
+QPixmap KIconEffect::apply(QPixmap pixmap, int effect, float value,
+ const QColor col, const QColor col2, bool trans) const
+{
+ QPixmap result;
+
+ if (effect >= LastEffect )
+ {
+ kdDebug(265) << "Illegal icon effect: " << effect << "\n";
+ return result;
+ }
+
+ if ((trans == true) && (effect == NoEffect))
+ {
+ result = pixmap;
+ semiTransparent(result);
+ }
+ else if ( effect != NoEffect )
+ {
+ QImage tmpImg = pixmap.convertToImage();
+ tmpImg = apply(tmpImg, effect, value, col, col2, trans);
+ result.convertFromImage(tmpImg);
+ }
+ else
+ result = pixmap;
+
+ return result;
+}
+
+// Taken from KImageEffect. We don't want to link kdecore to kdeui! As long
+// as this code is not too big, it doesn't seem much of a problem to me.
+
+void KIconEffect::toGray(QImage &img, float value)
+{
+ int pixels = (img.depth() > 8) ? img.width()*img.height()
+ : img.numColors();
+ unsigned int *data = img.depth() > 8 ? (unsigned int *) img.bits()
+ : (unsigned int *) img.colorTable();
+ int rval, gval, bval, val, alpha, i;
+ for (i=0; i<pixels; i++)
+ {
+ val = qGray(data[i]);
+ alpha = qAlpha(data[i]);
+ if (value < 1.0)
+ {
+ rval = static_cast<int>(value*val+(1.0-value)*qRed(data[i]));
+ gval = static_cast<int>(value*val+(1.0-value)*qGreen(data[i]));
+ bval = static_cast<int>(value*val+(1.0-value)*qBlue(data[i]));
+ data[i] = qRgba(rval, gval, bval, alpha);
+ } else
+ data[i] = qRgba(val, val, val, alpha);
+ }
+}
+
+void KIconEffect::colorize(QImage &img, const QColor &col, float value)
+{
+ int pixels = (img.depth() > 8) ? img.width()*img.height()
+ : img.numColors();
+ unsigned int *data = img.depth() > 8 ? (unsigned int *) img.bits()
+ : (unsigned int *) img.colorTable();
+ int rval, gval, bval, val, alpha, i;
+ float rcol = col.red(), gcol = col.green(), bcol = col.blue();
+ for (i=0; i<pixels; i++)
+ {
+ val = qGray(data[i]);
+ if (val < 128)
+ {
+ rval = static_cast<int>(rcol/128*val);
+ gval = static_cast<int>(gcol/128*val);
+ bval = static_cast<int>(bcol/128*val);
+ }
+ else if (val > 128)
+ {
+ rval = static_cast<int>((val-128)*(2-rcol/128)+rcol-1);
+ gval = static_cast<int>((val-128)*(2-gcol/128)+gcol-1);
+ bval = static_cast<int>((val-128)*(2-bcol/128)+bcol-1);
+ }
+ else // val == 128
+ {
+ rval = static_cast<int>(rcol);
+ gval = static_cast<int>(gcol);
+ bval = static_cast<int>(bcol);
+ }
+ if (value < 1.0)
+ {
+ rval = static_cast<int>(value*rval+(1.0 - value)*qRed(data[i]));
+ gval = static_cast<int>(value*gval+(1.0 - value)*qGreen(data[i]));
+ bval = static_cast<int>(value*bval+(1.0 - value)*qBlue(data[i]));
+ }
+
+ alpha = qAlpha(data[i]);
+ data[i] = qRgba(rval, gval, bval, alpha);
+ }
+}
+
+void KIconEffect::toMonochrome(QImage &img, const QColor &black, const QColor &white, float value) {
+ int pixels = (img.depth() > 8) ? img.width()*img.height() : img.numColors();
+ unsigned int *data = img.depth() > 8 ? (unsigned int *) img.bits()
+ : (unsigned int *) img.colorTable();
+ int rval, gval, bval, alpha, i;
+ int rw = white.red(), gw = white.green(), bw = white.blue();
+ int rb = black.red(), gb = black.green(), bb = black.blue();
+
+ double values = 0, sum = 0;
+ bool grayscale = true;
+ // Step 1: determine the average brightness
+ for (i=0; i<pixels; i++) {
+ sum += qGray(data[i])*qAlpha(data[i]) + 255*(255-qAlpha(data[i]));
+ values += 255;
+ if ((qRed(data[i]) != qGreen(data[i]) ) || (qGreen(data[i]) != qBlue(data[i]) ))
+ grayscale = false;
+ }
+ double medium = sum/values;
+
+ // Step 2: Modify the image
+ if (grayscale) {
+ for (i=0; i<pixels; i++) {
+ int v = qRed(data[i]);
+ rval = static_cast<int>( ((255-v)*rb + v*rw)*value/255 + (1.0-value)*qRed(data[i]));
+ gval = static_cast<int>( ((255-v)*gb + v*gw)*value/255 + (1.0-value)*qGreen(data[i]));
+ bval = static_cast<int>( ((255-v)*bb + v*bw)*value/255 + (1.0-value)*qBlue(data[i]));
+
+ alpha = qAlpha(data[i]);
+ data[i] = qRgba(rval, gval, bval, alpha);
+ }
+ }
+ else {
+ for (i=0; i<pixels; i++) {
+ if (qGray(data[i]) <= medium) {
+ rval = static_cast<int>(value*rb+(1.0-value)*qRed(data[i]));
+ gval = static_cast<int>(value*gb+(1.0-value)*qGreen(data[i]));
+ bval = static_cast<int>(value*bb+(1.0-value)*qBlue(data[i]));
+ }
+ else {
+ rval = static_cast<int>(value*rw+(1.0-value)*qRed(data[i]));
+ gval = static_cast<int>(value*gw+(1.0-value)*qGreen(data[i]));
+ bval = static_cast<int>(value*bw+(1.0-value)*qBlue(data[i]));
+ }
+
+ alpha = qAlpha(data[i]);
+ data[i] = qRgba(rval, gval, bval, alpha);
+ }
+ }
+}
+
+void KIconEffect::deSaturate(QImage &img, float value)
+{
+ int pixels = (img.depth() > 8) ? img.width()*img.height()
+ : img.numColors();
+ unsigned int *data = (img.depth() > 8) ? (unsigned int *) img.bits()
+ : (unsigned int *) img.colorTable();
+ QColor color;
+ int h, s, v, i;
+ for (i=0; i<pixels; i++)
+ {
+ color.setRgb(data[i]);
+ color.hsv(&h, &s, &v);
+ color.setHsv(h, (int) (s * (1.0 - value) + 0.5), v);
+ data[i] = qRgba(color.red(), color.green(), color.blue(),
+ qAlpha(data[i]));
+ }
+}
+
+void KIconEffect::toGamma(QImage &img, float value)
+{
+ int pixels = (img.depth() > 8) ? img.width()*img.height()
+ : img.numColors();
+ unsigned int *data = (img.depth() > 8) ? (unsigned int *) img.bits()
+ : (unsigned int *) img.colorTable();
+ QColor color;
+ int i, rval, gval, bval;
+ float gamma;
+ gamma = 1/(2*value+0.5);
+
+ for (i=0; i<pixels; i++)
+ {
+ color.setRgb(data[i]);
+ color.rgb(&rval, &gval, &bval);
+ rval = static_cast<int>(pow(static_cast<float>(rval)/255 , gamma)*255);
+ gval = static_cast<int>(pow(static_cast<float>(gval)/255 , gamma)*255);
+ bval = static_cast<int>(pow(static_cast<float>(bval)/255 , gamma)*255);
+ data[i] = qRgba(rval, gval, bval, qAlpha(data[i]));
+ }
+}
+
+void KIconEffect::semiTransparent(QImage &img)
+{
+ img.setAlphaBuffer(true);
+
+ int x, y;
+ if (img.depth() == 32)
+ {
+ int width = img.width();
+ int height = img.height();
+
+ if (qt_use_xrender && qt_has_xft )
+ for (y=0; y<height; y++)
+ {
+#ifdef WORDS_BIGENDIAN
+ uchar *line = (uchar*) img.scanLine(y);
+#else
+ uchar *line = (uchar*) img.scanLine(y) + 3;
+#endif
+ for (x=0; x<width; x++)
+ {
+ *line >>= 1;
+ line += 4;
+ }
+ }
+ else
+ for (y=0; y<height; y++)
+ {
+ QRgb *line = (QRgb *) img.scanLine(y);
+ for (x=(y%2); x<width; x+=2)
+ line[x] &= 0x00ffffff;
+ }
+
+ } else
+ {
+ // Insert transparent pixel into the clut.
+ int transColor = -1;
+
+ // search for a color that is already transparent
+ for (x=0; x<img.numColors(); x++)
+ {
+ // try to find already transparent pixel
+ if (qAlpha(img.color(x)) < 127)
+ {
+ transColor = x;
+ break;
+ }
+ }
+
+
+ // FIXME: image must have transparency
+ if(transColor < 0 || transColor >= img.numColors())
+ return;
+
+ img.setColor(transColor, 0);
+ if(img.depth() == 8)
+ {
+ for (y=0; y<img.height(); y++)
+ {
+ unsigned char *line = img.scanLine(y);
+ for (x=(y%2); x<img.width(); x+=2)
+ line[x] = transColor;
+ }
+ }
+ else
+ {
+ // SLOOW, but simple, as we would have to
+ // deal with endianess etc on our own here
+ for (y=0; y<img.height(); y++)
+ for (x=(y%2); x<img.width(); x+=2)
+ img.setPixel(x, y, transColor);
+ }
+ }
+}
+
+void KIconEffect::semiTransparent(QPixmap &pix)
+{
+ if ( qt_use_xrender && qt_has_xft )
+ {
+ QImage img=pix.convertToImage();
+ semiTransparent(img);
+ pix.convertFromImage(img);
+ return;
+ }
+
+ QImage img;
+ if (pix.mask() != 0L)
+ img = pix.mask()->convertToImage();
+ else
+ {
+ img.create(pix.size(), 1, 2, QImage::BigEndian);
+ img.fill(1);
+ }
+
+ for (int y=0; y<img.height(); y++)
+ {
+ QRgb *line = (QRgb *) img.scanLine(y);
+ QRgb pattern = (y % 2) ? 0x55555555 : 0xaaaaaaaa;
+ for (int x=0; x<(img.width()+31)/32; x++)
+ line[x] &= pattern;
+ }
+ QBitmap mask;
+ mask.convertFromImage(img);
+ pix.setMask(mask);
+}
+
+QImage KIconEffect::doublePixels(QImage src) const
+{
+ QImage dst;
+ if (src.depth() == 1)
+ {
+ kdDebug(265) << "image depth 1 not supported\n";
+ return dst;
+ }
+
+ int w = src.width();
+ int h = src.height();
+ dst.create(w*2, h*2, src.depth());
+ dst.setAlphaBuffer(src.hasAlphaBuffer());
+
+ int x, y;
+ if (src.depth() == 32)
+ {
+ QRgb *l1, *l2;
+ for (y=0; y<h; y++)
+ {
+ l1 = (QRgb *) src.scanLine(y);
+ l2 = (QRgb *) dst.scanLine(y*2);
+ for (x=0; x<w; x++)
+ {
+ l2[x*2] = l2[x*2+1] = l1[x];
+ }
+ memcpy(dst.scanLine(y*2+1), l2, dst.bytesPerLine());
+ }
+ } else
+ {
+ for (x=0; x<src.numColors(); x++)
+ dst.setColor(x, src.color(x));
+
+ unsigned char *l1, *l2;
+ for (y=0; y<h; y++)
+ {
+ l1 = src.scanLine(y);
+ l2 = dst.scanLine(y*2);
+ for (x=0; x<w; x++)
+ {
+ l2[x*2] = l1[x];
+ l2[x*2+1] = l1[x];
+ }
+ memcpy(dst.scanLine(y*2+1), l2, dst.bytesPerLine());
+ }
+ }
+ return dst;
+}
+
+void KIconEffect::overlay(QImage &src, QImage &overlay)
+{
+ if (src.depth() != overlay.depth())
+ {
+ kdDebug(265) << "Image depth src != overlay!\n";
+ return;
+ }
+ if (src.size() != overlay.size())
+ {
+ kdDebug(265) << "Image size src != overlay\n";
+ return;
+ }
+ if (!overlay.hasAlphaBuffer())
+ {
+ kdDebug(265) << "Overlay doesn't have alpha buffer!\n";
+ return;
+ }
+
+ int i, j;
+
+ // We don't do 1 bpp
+
+ if (src.depth() == 1)
+ {
+ kdDebug(265) << "1bpp not supported!\n";
+ return;
+ }
+
+ // Overlay at 8 bpp doesn't use alpha blending
+
+ if (src.depth() == 8)
+ {
+ if (src.numColors() + overlay.numColors() > 255)
+ {
+ kdDebug(265) << "Too many colors in src + overlay!\n";
+ return;
+ }
+
+ // Find transparent pixel in overlay
+ int trans;
+ for (trans=0; trans<overlay.numColors(); trans++)
+ {
+ if (qAlpha(overlay.color(trans)) == 0)
+ {
+ kdDebug(265) << "transparent pixel found at " << trans << "\n";
+ break;
+ }
+ }
+ if (trans == overlay.numColors())
+ {
+ kdDebug(265) << "transparent pixel not found!\n";
+ return;
+ }
+
+ // Merge color tables
+ int nc = src.numColors();
+ src.setNumColors(nc + overlay.numColors());
+ for (i=0; i<overlay.numColors(); i++)
+ {
+ src.setColor(nc+i, overlay.color(i));
+ }
+
+ // Overwrite nontransparent pixels.
+ unsigned char *oline, *sline;
+ for (i=0; i<src.height(); i++)
+ {
+ oline = overlay.scanLine(i);
+ sline = src.scanLine(i);
+ for (j=0; j<src.width(); j++)
+ {
+ if (oline[j] != trans)
+ sline[j] = oline[j]+nc;
+ }
+ }
+ }
+
+ // Overlay at 32 bpp does use alpha blending
+
+ if (src.depth() == 32)
+ {
+ QRgb *oline, *sline;
+ int r1, g1, b1, a1;
+ int r2, g2, b2, a2;
+
+ for (i=0; i<src.height(); i++)
+ {
+ oline = (QRgb *) overlay.scanLine(i);
+ sline = (QRgb *) src.scanLine(i);
+
+ for (j=0; j<src.width(); j++)
+ {
+ r1 = qRed(oline[j]);
+ g1 = qGreen(oline[j]);
+ b1 = qBlue(oline[j]);
+ a1 = qAlpha(oline[j]);
+
+ r2 = qRed(sline[j]);
+ g2 = qGreen(sline[j]);
+ b2 = qBlue(sline[j]);
+ a2 = qAlpha(sline[j]);
+
+ r2 = (a1 * r1 + (0xff - a1) * r2) >> 8;
+ g2 = (a1 * g1 + (0xff - a1) * g2) >> 8;
+ b2 = (a1 * b1 + (0xff - a1) * b2) >> 8;
+ a2 = QMAX(a1, a2);
+
+ sline[j] = qRgba(r2, g2, b2, a2);
+ }
+ }
+ }
+
+ return;
+}
+
+ void
+KIconEffect::visualActivate(QWidget * widget, QRect rect)
+{
+ if (!KGlobalSettings::visualActivate())
+ return;
+
+ uint actSpeed = KGlobalSettings::visualActivateSpeed();
+
+ uint actCount = QMIN(rect.width(), rect.height()) / 2;
+
+ // Clip actCount to range 1..10.
+
+ if (actCount < 1)
+ actCount = 1;
+
+ else if (actCount > 10)
+ actCount = 10;
+
+ // Clip actSpeed to range 1..100.
+
+ if (actSpeed < 1)
+ actSpeed = 1;
+
+ else if (actSpeed > 100)
+ actSpeed = 100;
+
+ // actSpeed needs to be converted to actDelay.
+ // actDelay is inversely proportional to actSpeed and needs to be
+ // divided up into actCount portions.
+ // We also convert the us value to ms.
+
+ unsigned int actDelay = (1000 * (100 - actSpeed)) / actCount;
+
+ //kdDebug() << "actCount=" << actCount << " actDelay=" << actDelay << endl;
+
+ QPoint c = rect.center();
+
+ QPainter p(widget);
+
+ // Use NotROP to avoid having to repaint the pixmap each time.
+ p.setPen(QPen(Qt::black, 2, Qt::DotLine));
+ p.setRasterOp(Qt::NotROP);
+
+ // The spacing between the rects we draw.
+ // Use the minimum of width and height to avoid painting outside the
+ // pixmap area.
+ //unsigned int delta(QMIN(rect.width() / actCount, rect.height() / actCount));
+
+ // Support for rectangles by David
+ unsigned int deltaX = rect.width() / actCount;
+ unsigned int deltaY = rect.height() / actCount;
+
+ for (unsigned int i = 1; i < actCount; i++) {
+
+ int w = i * deltaX;
+ int h = i * deltaY;
+
+ rect.setRect(c.x() - w / 2, c.y() - h / 2, w, h);
+
+ p.drawRect(rect);
+ p.flush();
+
+ usleep(actDelay);
+
+ p.drawRect(rect);
+ }
+}
+