diff options
Diffstat (limited to 'kolourpaint/pixmapfx/kpeffectemboss.cpp')
| -rw-r--r-- | kolourpaint/pixmapfx/kpeffectemboss.cpp | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/kolourpaint/pixmapfx/kpeffectemboss.cpp b/kolourpaint/pixmapfx/kpeffectemboss.cpp new file mode 100644 index 00000000..e33f3a42 --- /dev/null +++ b/kolourpaint/pixmapfx/kpeffectemboss.cpp @@ -0,0 +1,228 @@ + +/* + Copyright (c) 2003,2004,2005 Clarence Dang <dang@kde.org> + All rights reserved. + + Redistribution and use in source and binary forms, with or without + modification, are permitted provided that the following conditions + are met: + + 1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + 2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + + THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +#define DEBUG_KP_EFFECT_EMBOSS 0 + + +#include <kpeffectemboss.h> + +#include <qcheckbox.h> +#include <qimage.h> +#include <qlabel.h> +#include <qlayout.h> +#include <qpixmap.h> +#include <qpushbutton.h> + +#include <kdebug.h> +#include <kimageeffect.h> +#include <klocale.h> +#include <knuminput.h> + +#include <kpmainwindow.h> +#include <kppixmapfx.h> + + +kpEffectEmbossCommand::kpEffectEmbossCommand (double radius, double sigma, + int repeat, + bool actOnSelection, + kpMainWindow *mainWindow) + : kpColorEffectCommand (i18n ("Emboss"), actOnSelection, mainWindow), + m_radius (radius), m_sigma (sigma), + m_repeat (repeat) +{ +} + +kpEffectEmbossCommand::~kpEffectEmbossCommand () +{ +} + + +// public static +QPixmap kpEffectEmbossCommand::apply (const QPixmap &pixmap, + double radius, double sigma, + int repeat) +{ +#if DEBUG_KP_EFFECT_EMBOSS + kdDebug () << "kpEffectEmbossCommand::apply()" + << " radius=" << radius + << " sigma=" << sigma + << " repeat=" << repeat + << ")" + << endl; +#endif + + // (KImageEffect::emboss() ignores mask) + QPixmap usePixmap = kpPixmapFX::pixmapWithDefinedTransparentPixels ( + pixmap, + Qt::white/*arbitrarily chosen*/); + + + QImage image = kpPixmapFX::convertToImage (usePixmap); + + for (int i = 0; i < repeat; i++) + { + image = KImageEffect::emboss (image, radius, sigma); + } + + QPixmap retPixmap = kpPixmapFX::convertToPixmap (image); + + + // KImageEffect::emboss() nukes mask - restore it + if (usePixmap.mask ()) + retPixmap.setMask (*usePixmap.mask ()); + + + return retPixmap; +} + +// protected virtual [base kpColorEffectCommand] +QPixmap kpEffectEmbossCommand::applyColorEffect (const QPixmap &pixmap) +{ + return apply (pixmap, m_radius, m_sigma, m_repeat); +} + + + +kpEffectEmbossWidget::kpEffectEmbossWidget (bool actOnSelection, + kpMainWindow *mainWindow, + QWidget *parent, const char *name) + : kpColorEffectWidget (actOnSelection, mainWindow, parent, name) +{ + QGridLayout *lay = new QGridLayout (this, 4, 2, marginHint (), spacingHint ()); + + +#if 0 + QLabel *amountLabel = new QLabel (i18n ("&Amount:"), this); + m_amountInput = new KIntNumInput (this); + m_amountInput->setRange (0, 10, 1/*step*/, true/*slider*/); + m_amountInput->setSpecialValueText (i18n ("None")); + + + amountLabel->setBuddy (m_amountInput); + + + lay->addWidget (amountLabel, 0, 0); + lay->addWidget (m_amountInput, 0, 1); + + lay->setColStretch (1, 1); + + + connect (m_amountInput, SIGNAL (valueChanged (int)), + this, SIGNAL (settingsChanged ())); +#endif + + m_enableCheckBox = new QCheckBox (i18n ("E&nable"), this); + + + lay->addMultiCellWidget (m_enableCheckBox, 0, 0, 0, 1, Qt::AlignCenter); + + + // (settingsChangedDelayed() instead of settingsChanged() so that the + // user can quickly press OK to apply effect to document directly and + // not have to wait for the also slow preview) + connect (m_enableCheckBox, SIGNAL (toggled (bool)), + this, SIGNAL (settingsChangedDelayed ())); +} + +kpEffectEmbossWidget::~kpEffectEmbossWidget () +{ +} + + +// public virtual [base kpColorEffectWidget] +QString kpEffectEmbossWidget::caption () const +{ + return QString::null; +} + + +// public virtual [base kpColorEffectWidget] +bool kpEffectEmbossWidget::isNoOp () const +{ + //return (m_amountInput->value () == 0); + return !m_enableCheckBox->isChecked (); +} + +// public virtual [base kpColorEffectWidget] +QPixmap kpEffectEmbossWidget::applyColorEffect (const QPixmap &pixmap) +{ + if (isNoOp ()) + return pixmap; + + return kpEffectEmbossCommand::apply (pixmap, radius (), sigma (), repeat ()); +} + +// public virtual [base kpColorEffectWidget] +kpColorEffectCommand *kpEffectEmbossWidget::createCommand () const +{ + return new kpEffectEmbossCommand (radius (), sigma (), repeat (), + m_actOnSelection, + m_mainWindow); +} + + +// The numbers that follow were picked by experimentation. +// I still have no idea what "radius" and "sigma" mean +// (even after reading the API). + +// protected +double kpEffectEmbossWidget::radius () const +{ + //if (m_amountInput->value () == 0) + // return 0; + + return 0; +} + + +// protected +double kpEffectEmbossWidget::sigma () const +{ +#if 0 + if (m_amountInput->value () == 0) + return 0; + + const double Min = 1; + const double Max = 1.2; + + return Min + + (m_amountInput->maxValue () - m_amountInput->value ()) * + (Max - Min) / + (m_amountInput->maxValue () - 1); +#endif + + return 1; +} + +// protected +int kpEffectEmbossWidget::repeat () const +{ + return 1; +} + + +#include <kpeffectemboss.moc> |