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919 lines
23 KiB
919 lines
23 KiB
/* vi: ts=8 sts=4 sw=4
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* $Id$
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*
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* This file is part of the KDE project, module kdecore.
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* Copyright (C) 2000 Geert Jansen <jansen@kde.org>
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* with minor additions and based on ideas from
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* Torsten Rahn <torsten@kde.org>
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*
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* This is free software; it comes under the GNU Library General
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* Public License, version 2. See the file "COPYING.LIB" for the
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* exact licensing terms.
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*/
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#include <config.h>
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#include <unistd.h>
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#include <math.h>
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#include <qstring.h>
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#include <qstringlist.h>
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#include <qbitmap.h>
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#include <qpixmap.h>
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#include <qimage.h>
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#include <qcolor.h>
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#include <qwidget.h>
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#include <qpainter.h>
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#include <qpen.h>
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#include <qapplication.h>
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#include <qpoint.h>
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#include <qrect.h>
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#include <kdebug.h>
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#include <kglobal.h>
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#include <kconfig.h>
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#include <kglobalsettings.h>
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#include <kicontheme.h>
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#include "kiconeffect.h"
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#if defined(Q_WS_WIN) || defined(Q_WS_MACX)
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static bool qt_use_xrender=true;
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static bool qt_has_xft=true;
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#else
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extern bool qt_use_xrender;
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extern bool qt_has_xft;
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#endif
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class KIconEffectPrivate
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{
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public:
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QString mKey[6][3];
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QColor mColor2[6][3];
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};
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KIconEffect::KIconEffect()
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{
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d = new KIconEffectPrivate;
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init();
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}
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KIconEffect::~KIconEffect()
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{
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delete d;
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d = 0L;
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}
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void KIconEffect::init()
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{
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KConfig *config = KGlobal::config();
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int i, j, effect=-1;
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QStringList groups;
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groups += "Desktop";
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groups += "Toolbar";
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groups += "MainToolbar";
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groups += "Small";
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groups += "Panel";
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QStringList states;
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states += "Default";
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states += "Active";
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states += "Disabled";
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QStringList::ConstIterator it, it2;
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QString _togray("togray");
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QString _colorize("colorize");
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QString _desaturate("desaturate");
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QString _togamma("togamma");
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QString _none("none");
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QString _tomonochrome("tomonochrome");
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KConfigGroupSaver cs(config, "default");
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for (it=groups.begin(), i=0; it!=groups.end(); it++, i++)
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{
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// Default effects
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mEffect[i][0] = NoEffect;
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mEffect[i][1] = ((i==0)||(i==4)) ? ToGamma : NoEffect;
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mEffect[i][2] = ToGray;
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mTrans[i][0] = false;
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mTrans[i][1] = false;
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mTrans[i][2] = true;
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mValue[i][0] = 1.0;
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mValue[i][1] = ((i==0)||(i==4)) ? 0.7 : 1.0;
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mValue[i][2] = 1.0;
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mColor[i][0] = QColor(144,128,248);
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mColor[i][1] = QColor(169,156,255);
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mColor[i][2] = QColor(34,202,0);
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d->mColor2[i][0] = QColor(0,0,0);
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d->mColor2[i][1] = QColor(0,0,0);
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d->mColor2[i][2] = QColor(0,0,0);
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config->setGroup(*it + "Icons");
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for (it2=states.begin(), j=0; it2!=states.end(); it2++, j++)
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{
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QString tmp = config->readEntry(*it2 + "Effect");
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if (tmp == _togray)
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effect = ToGray;
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else if (tmp == _colorize)
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effect = Colorize;
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else if (tmp == _desaturate)
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effect = DeSaturate;
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else if (tmp == _togamma)
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effect = ToGamma;
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else if (tmp == _tomonochrome)
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effect = ToMonochrome;
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else if (tmp == _none)
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effect = NoEffect;
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else
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continue;
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if(effect != -1)
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mEffect[i][j] = effect;
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mValue[i][j] = config->readDoubleNumEntry(*it2 + "Value");
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mColor[i][j] = config->readColorEntry(*it2 + "Color");
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d->mColor2[i][j] = config->readColorEntry(*it2 + "Color2");
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mTrans[i][j] = config->readBoolEntry(*it2 + "SemiTransparent");
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}
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}
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}
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bool KIconEffect::hasEffect(int group, int state) const
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{
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return mEffect[group][state] != NoEffect;
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}
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QString KIconEffect::fingerprint(int group, int state) const
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{
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if ( group >= KIcon::LastGroup ) return "";
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QString cached = d->mKey[group][state];
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if (cached.isEmpty())
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{
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QString tmp;
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cached = tmp.setNum(mEffect[group][state]);
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cached += ':';
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cached += tmp.setNum(mValue[group][state]);
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cached += ':';
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cached += mTrans[group][state] ? QString::fromLatin1("trans")
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: QString::fromLatin1("notrans");
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if (mEffect[group][state] == Colorize || mEffect[group][state] == ToMonochrome)
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{
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cached += ':';
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cached += mColor[group][state].name();
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}
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if (mEffect[group][state] == ToMonochrome)
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{
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cached += ':';
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cached += d->mColor2[group][state].name();
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}
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d->mKey[group][state] = cached;
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}
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return cached;
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}
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QImage KIconEffect::apply(QImage image, int group, int state) const
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{
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if (state >= KIcon::LastState)
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{
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kdDebug(265) << "Illegal icon state: " << state << "\n";
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return image;
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}
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if (group >= KIcon::LastGroup)
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{
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kdDebug(265) << "Illegal icon group: " << group << "\n";
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return image;
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}
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return apply(image, mEffect[group][state], mValue[group][state],
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mColor[group][state], d->mColor2[group][state], mTrans[group][state]);
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}
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QImage KIconEffect::apply(QImage image, int effect, float value, const QColor col, bool trans) const
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{
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return apply (image, effect, value, col, KGlobalSettings::baseColor(), trans);
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}
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QImage KIconEffect::apply(QImage image, int effect, float value, const QColor col, const QColor col2, bool trans) const
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{
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if (effect >= LastEffect )
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{
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kdDebug(265) << "Illegal icon effect: " << effect << "\n";
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return image;
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}
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if (value > 1.0)
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value = 1.0;
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else if (value < 0.0)
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value = 0.0;
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switch (effect)
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{
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case ToGray:
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toGray(image, value);
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break;
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case DeSaturate:
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deSaturate(image, value);
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break;
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case Colorize:
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colorize(image, col, value);
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break;
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case ToGamma:
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toGamma(image, value);
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break;
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case ToMonochrome:
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toMonochrome(image, col, col2, value);
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break;
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}
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if (trans == true)
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{
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semiTransparent(image);
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}
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return image;
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}
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QPixmap KIconEffect::apply(QPixmap pixmap, int group, int state) const
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{
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if (state >= KIcon::LastState)
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{
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kdDebug(265) << "Illegal icon state: " << state << "\n";
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return pixmap;
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}
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if (group >= KIcon::LastGroup)
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{
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kdDebug(265) << "Illegal icon group: " << group << "\n";
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return pixmap;
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}
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return apply(pixmap, mEffect[group][state], mValue[group][state],
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mColor[group][state], d->mColor2[group][state], mTrans[group][state]);
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}
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QPixmap KIconEffect::apply(QPixmap pixmap, int effect, float value,
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const QColor col, bool trans) const
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{
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return apply (pixmap, effect, value, col, KGlobalSettings::baseColor(), trans);
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}
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QPixmap KIconEffect::apply(QPixmap pixmap, int effect, float value,
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const QColor col, const QColor col2, bool trans) const
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{
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QPixmap result;
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if (effect >= LastEffect )
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{
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kdDebug(265) << "Illegal icon effect: " << effect << "\n";
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return result;
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}
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if ((trans == true) && (effect == NoEffect))
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{
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result = pixmap;
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semiTransparent(result);
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}
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else if ( effect != NoEffect )
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{
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QImage tmpImg = pixmap.convertToImage();
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tmpImg = apply(tmpImg, effect, value, col, col2, trans);
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result.convertFromImage(tmpImg);
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}
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else
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result = pixmap;
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return result;
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}
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// Taken from KImageEffect. We don't want to link kdecore to kdeui! As long
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// as this code is not too big, it doesn't seem much of a problem to me.
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void KIconEffect::toGray(QImage &img, float value)
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{
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int pixels = (img.depth() > 8) ? img.width()*img.height()
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: img.numColors();
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unsigned int *data = img.depth() > 8 ? (unsigned int *) img.bits()
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: (unsigned int *) img.colorTable();
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int rval, gval, bval, val, alpha, i;
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for (i=0; i<pixels; i++)
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{
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val = qGray(data[i]);
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alpha = qAlpha(data[i]);
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if (value < 1.0)
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{
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rval = static_cast<int>(value*val+(1.0-value)*qRed(data[i]));
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gval = static_cast<int>(value*val+(1.0-value)*qGreen(data[i]));
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bval = static_cast<int>(value*val+(1.0-value)*qBlue(data[i]));
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data[i] = qRgba(rval, gval, bval, alpha);
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} else
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data[i] = qRgba(val, val, val, alpha);
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}
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}
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void KIconEffect::colorize(QImage &img, const QColor &col, float value)
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{
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int pixels = (img.depth() > 8) ? img.width()*img.height()
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: img.numColors();
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unsigned int *data = img.depth() > 8 ? (unsigned int *) img.bits()
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: (unsigned int *) img.colorTable();
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int rval, gval, bval, val, alpha, i;
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float rcol = col.red(), gcol = col.green(), bcol = col.blue();
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for (i=0; i<pixels; i++)
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{
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val = qGray(data[i]);
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if (val < 128)
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{
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rval = static_cast<int>(rcol/128*val);
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gval = static_cast<int>(gcol/128*val);
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bval = static_cast<int>(bcol/128*val);
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}
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else if (val > 128)
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{
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rval = static_cast<int>((val-128)*(2-rcol/128)+rcol-1);
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gval = static_cast<int>((val-128)*(2-gcol/128)+gcol-1);
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bval = static_cast<int>((val-128)*(2-bcol/128)+bcol-1);
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}
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else // val == 128
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{
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rval = static_cast<int>(rcol);
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gval = static_cast<int>(gcol);
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bval = static_cast<int>(bcol);
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}
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if (value < 1.0)
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{
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rval = static_cast<int>(value*rval+(1.0 - value)*qRed(data[i]));
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gval = static_cast<int>(value*gval+(1.0 - value)*qGreen(data[i]));
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bval = static_cast<int>(value*bval+(1.0 - value)*qBlue(data[i]));
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}
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alpha = qAlpha(data[i]);
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data[i] = qRgba(rval, gval, bval, alpha);
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}
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}
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void KIconEffect::toMonochrome(QImage &img, const QColor &black, const QColor &white, float value) {
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int pixels = (img.depth() > 8) ? img.width()*img.height() : img.numColors();
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unsigned int *data = img.depth() > 8 ? (unsigned int *) img.bits()
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: (unsigned int *) img.colorTable();
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int rval, gval, bval, alpha, i;
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int rw = white.red(), gw = white.green(), bw = white.blue();
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int rb = black.red(), gb = black.green(), bb = black.blue();
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double values = 0, sum = 0;
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bool grayscale = true;
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// Step 1: determine the average brightness
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for (i=0; i<pixels; i++) {
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sum += qGray(data[i])*qAlpha(data[i]) + 255*(255-qAlpha(data[i]));
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values += 255;
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if ((qRed(data[i]) != qGreen(data[i]) ) || (qGreen(data[i]) != qBlue(data[i]) ))
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grayscale = false;
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}
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double medium = sum/values;
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// Step 2: Modify the image
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if (grayscale) {
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for (i=0; i<pixels; i++) {
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int v = qRed(data[i]);
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rval = static_cast<int>( ((255-v)*rb + v*rw)*value/255 + (1.0-value)*qRed(data[i]));
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gval = static_cast<int>( ((255-v)*gb + v*gw)*value/255 + (1.0-value)*qGreen(data[i]));
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bval = static_cast<int>( ((255-v)*bb + v*bw)*value/255 + (1.0-value)*qBlue(data[i]));
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alpha = qAlpha(data[i]);
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data[i] = qRgba(rval, gval, bval, alpha);
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}
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}
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else {
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for (i=0; i<pixels; i++) {
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if (qGray(data[i]) <= medium) {
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rval = static_cast<int>(value*rb+(1.0-value)*qRed(data[i]));
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gval = static_cast<int>(value*gb+(1.0-value)*qGreen(data[i]));
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bval = static_cast<int>(value*bb+(1.0-value)*qBlue(data[i]));
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}
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else {
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rval = static_cast<int>(value*rw+(1.0-value)*qRed(data[i]));
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gval = static_cast<int>(value*gw+(1.0-value)*qGreen(data[i]));
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bval = static_cast<int>(value*bw+(1.0-value)*qBlue(data[i]));
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}
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alpha = qAlpha(data[i]);
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data[i] = qRgba(rval, gval, bval, alpha);
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}
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}
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}
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void KIconEffect::deSaturate(QImage &img, float value)
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{
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int pixels = (img.depth() > 8) ? img.width()*img.height()
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: img.numColors();
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unsigned int *data = (img.depth() > 8) ? (unsigned int *) img.bits()
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: (unsigned int *) img.colorTable();
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QColor color;
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int h, s, v, i;
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for (i=0; i<pixels; i++)
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{
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color.setRgb(data[i]);
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color.hsv(&h, &s, &v);
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color.setHsv(h, (int) (s * (1.0 - value) + 0.5), v);
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data[i] = qRgba(color.red(), color.green(), color.blue(),
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qAlpha(data[i]));
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}
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}
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void KIconEffect::toGamma(QImage &img, float value)
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{
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int pixels = (img.depth() > 8) ? img.width()*img.height()
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: img.numColors();
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unsigned int *data = (img.depth() > 8) ? (unsigned int *) img.bits()
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: (unsigned int *) img.colorTable();
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QColor color;
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int i, rval, gval, bval;
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float gamma;
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gamma = 1/(2*value+0.5);
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for (i=0; i<pixels; i++)
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{
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color.setRgb(data[i]);
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color.rgb(&rval, &gval, &bval);
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rval = static_cast<int>(pow(static_cast<float>(rval)/255 , gamma)*255);
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gval = static_cast<int>(pow(static_cast<float>(gval)/255 , gamma)*255);
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bval = static_cast<int>(pow(static_cast<float>(bval)/255 , gamma)*255);
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data[i] = qRgba(rval, gval, bval, qAlpha(data[i]));
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}
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}
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void KIconEffect::semiTransparent(QImage &img)
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{
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img.setAlphaBuffer(true);
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int x, y;
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if (img.depth() == 32)
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{
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int width = img.width();
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int height = img.height();
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if (qt_use_xrender && qt_has_xft )
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for (y=0; y<height; y++)
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{
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#ifdef WORDS_BIGENDIAN
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uchar *line = (uchar*) img.scanLine(y);
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#else
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uchar *line = (uchar*) img.scanLine(y) + 3;
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#endif
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for (x=0; x<width; x++)
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{
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*line >>= 1;
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line += 4;
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}
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}
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else
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for (y=0; y<height; y++)
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{
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QRgb *line = (QRgb *) img.scanLine(y);
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for (x=(y%2); x<width; x+=2)
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line[x] &= 0x00ffffff;
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}
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} else
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{
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// Insert transparent pixel into the clut.
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int transColor = -1;
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|
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// search for a color that is already transparent
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for (x=0; x<img.numColors(); x++)
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{
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// try to find already transparent pixel
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if (qAlpha(img.color(x)) < 127)
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{
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transColor = x;
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break;
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}
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}
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|
|
|
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// FIXME: image must have transparency
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if(transColor < 0 || transColor >= img.numColors())
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return;
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|
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img.setColor(transColor, 0);
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if(img.depth() == 8)
|
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{
|
|
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);
|
|
}
|
|
}
|
|
|
|
void
|
|
KIconEffect::visualActivate(QWidget * widget, QRect rect, QPixmap *pixmap)
|
|
{
|
|
if (!KGlobalSettings::visualActivate())
|
|
return;
|
|
|
|
// Image too big to display smoothly
|
|
if ((rect.width() > 160) || (rect.height() > 160)) {
|
|
visualActivate(widget, rect); // call old effect
|
|
return;
|
|
}
|
|
|
|
uint actSpeed = KGlobalSettings::visualActivateSpeed();
|
|
uint actCount = QMIN(rect.width(), rect.height()) / 4;
|
|
|
|
|
|
// 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;
|
|
|
|
unsigned int deltaX = rect.width() / actCount * 1.5;
|
|
unsigned int deltaY = rect.height() / actCount * 1.5;
|
|
|
|
QPoint c = rect.center();
|
|
QRect maxRect(c.x() - (actCount * 2) * deltaX /2,
|
|
c.y() - (actCount * 2) * deltaY /2,
|
|
actCount * 2 * deltaX,
|
|
actCount * 2 * deltaY);
|
|
|
|
// convert rect to global coordinates if needed
|
|
if ((widget->rect().width() <= maxRect.width())
|
|
|| (widget->rect().height() <= maxRect.height()))
|
|
{
|
|
QPoint topLeft(rect.x(), rect.y());
|
|
rect.moveLeft(widget->mapToGlobal(topLeft).x());
|
|
rect.moveTop(widget->mapToGlobal(topLeft).y());
|
|
c = rect.center();
|
|
maxRect.setRect(c.x() - (actCount * 2) * deltaX /2,
|
|
c.y() - (actCount * 2) * deltaY /2,
|
|
actCount * 2 * deltaX,
|
|
actCount * 2 * deltaY);
|
|
}
|
|
|
|
QPainter *p;
|
|
QImage img = pixmap->convertToImage();
|
|
QPixmap pix;
|
|
QPixmap composite(maxRect.width(), maxRect.height(), -1, QPixmap::BestOptim);
|
|
QPainter cPainter(&composite);
|
|
QPoint cComposite = composite.rect().center();
|
|
|
|
// enable alpha blending
|
|
img.setAlphaBuffer(true);
|
|
|
|
// Ugly hack... Get "Screenshot" to blt into and even do that on the
|
|
// root window if the display area of <widget> is too small
|
|
if ((widget->rect().width() <= maxRect.width())
|
|
|| (widget->rect().height() <= maxRect.height()))
|
|
{
|
|
p = new QPainter(QApplication::desktop()->screen( -1 ), TRUE);
|
|
pix = QPixmap::grabWindow((QApplication::desktop()->screen( -1 ))->winId(),
|
|
maxRect.x(),
|
|
maxRect.y(),
|
|
maxRect.width(),
|
|
maxRect.height());
|
|
} else
|
|
{
|
|
// not as ugly as drawing directly to the screen
|
|
p = new QPainter(widget);
|
|
pix = QPixmap::grabWidget(widget,
|
|
maxRect.x(),
|
|
maxRect.y(),
|
|
maxRect.width(),
|
|
maxRect.height());
|
|
}
|
|
uchar deltaAlpha = 255 / (actCount * 1.2);
|
|
|
|
// Activate effect like MacOS X
|
|
for (unsigned int i = actCount; i < actCount * 2; i++) {
|
|
|
|
int w = i * deltaX;
|
|
int h = i * deltaY;
|
|
|
|
rect.setRect(cComposite.x() - w / 2, cComposite.y() - h / 2, w, h);
|
|
|
|
// draw offscreen
|
|
cPainter.drawPixmap(0, 0, pix, 0, 0, pix.width(), pix.height());
|
|
cPainter.drawImage(rect, img);
|
|
cPainter.flush();
|
|
|
|
// put onscreen
|
|
p->drawPixmap(maxRect, composite);
|
|
p->flush();
|
|
|
|
// Fade out Icon a bit more
|
|
int x, y;
|
|
if ((img.depth() == 32) && qt_use_xrender && qt_has_xft)
|
|
{
|
|
int width = img.width();
|
|
int height = img.height();
|
|
|
|
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 = (*line < deltaAlpha) ? 0 : *line - deltaAlpha;
|
|
line += 4;
|
|
}
|
|
}
|
|
}
|
|
usleep(actDelay*3);
|
|
}
|
|
|
|
// remove traces of the effect
|
|
if ((widget->rect().width() <= maxRect.width())
|
|
|| (widget->rect().height() <= maxRect.height()))
|
|
p->drawPixmap(maxRect, pix);
|
|
else {
|
|
p->drawPixmap(maxRect, pix);
|
|
widget->update(rect);
|
|
}
|
|
|
|
delete p;
|
|
}
|