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/kdegraphics@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 291 insertions, 0 deletions

diff --git a/kolourpaint/pixmapfx/kpeffectblursharpen.cpp b/kolourpaint/pixmapfx/kpeffectblursharpen.cpp
new file mode 100644
index 00000000..50c0b27d
--- /dev/null
+++ b/kolourpaint/pixmapfx/kpeffectblursharpen.cpp
@@ -0,0 +1,291 @@
+
+/*
+   Copyright (c) 2003,2004,2005 Clarence Dang <[email protected]>
+   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_BLUR_SHARPEN 0
+
+
+#include <kpeffectblursharpen.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>
+
+
+static QString nameForType (kpEffectBlurSharpenCommand::Type type)
+{
+    if (type == kpEffectBlurSharpenCommand::Blur)
+        return i18n ("Soften");
+    else if (type == kpEffectBlurSharpenCommand::Sharpen)
+        return i18n ("Sharpen");
+    else
+        return QString::null;
+}
+
+
+kpEffectBlurSharpenCommand::kpEffectBlurSharpenCommand (Type type,
+                                                        double radius, double sigma,
+                                                        int repeat,
+                                                        bool actOnSelection,
+                                                        kpMainWindow *mainWindow)
+    : kpColorEffectCommand (::nameForType (type), actOnSelection, mainWindow),
+      m_type (type),
+      m_radius (radius), m_sigma (sigma),
+      m_repeat (repeat)
+{
+}
+
+kpEffectBlurSharpenCommand::~kpEffectBlurSharpenCommand ()
+{
+}
+
+
+// public static
+QPixmap kpEffectBlurSharpenCommand::apply (const QPixmap &pixmap,
+                                           Type type, double radius, double sigma,
+                                           int repeat)
+{
+#if DEBUG_KP_EFFECT_BLUR_SHARPEN
+    kdDebug () << "kpEffectBlurSharpenCommand::apply(type="
+               << int (type)
+               << " radius=" << radius
+               << " sigma=" << sigma
+               << " repeat=" << repeat
+               << ")"
+               << endl;
+#endif
+
+    // (KImageEffect::(blur|sharpen)() ignores mask)
+    QPixmap usePixmap = kpPixmapFX::pixmapWithDefinedTransparentPixels (
+        pixmap,
+        Qt::white/*arbitrarily chosen*/);
+
+
+    QImage image = kpPixmapFX::convertToImage (usePixmap);
+
+    for (int i = 0; i < repeat; i++)
+    {
+        if (type == Blur)
+            image = KImageEffect::blur (image, radius, sigma);
+        else if (type == Sharpen)
+            image = KImageEffect::sharpen (image, radius, sigma);
+    }
+
+    QPixmap retPixmap = kpPixmapFX::convertToPixmap (image);
+
+
+    // KImageEffect::(blur|sharpen)() nukes mask - restore it
+    if (usePixmap.mask ())
+        retPixmap.setMask (*usePixmap.mask ());
+
+
+    return retPixmap;
+}
+
+// protected virtual [base kpColorEffectCommand]
+QPixmap kpEffectBlurSharpenCommand::applyColorEffect (const QPixmap &pixmap)
+{
+    return apply (pixmap, m_type, m_radius, m_sigma, m_repeat);
+}
+
+
+
+kpEffectBlurSharpenWidget::kpEffectBlurSharpenWidget (bool actOnSelection,
+                                                      kpMainWindow *mainWindow,
+                                                      QWidget *parent, const char *name)
+    : kpColorEffectWidget (actOnSelection, mainWindow, parent, name)
+{
+    QGridLayout *lay = new QGridLayout (this, 4, 2, marginHint (), spacingHint ());
+
+
+    QLabel *amountLabel = new QLabel (i18n ("&Amount:"), this);
+    m_amountInput = new KIntNumInput (this);
+    m_amountInput->setRange (-10, 10, 1/*step*/, true/*slider*/);
+
+    m_typeLabel = new QLabel (this);
+
+
+    amountLabel->setBuddy (m_amountInput);
+
+
+    lay->addWidget (amountLabel, 0, 0);
+    lay->addWidget (m_amountInput, 0, 1);
+
+    lay->addMultiCellWidget (m_typeLabel, 1, 1, 0, 1, Qt::AlignCenter);
+
+    lay->setColStretch (1, 1);
+
+
+    connect (m_amountInput, SIGNAL (valueChanged (int)),
+             this, SIGNAL (settingsChangedDelayed ()));
+
+    connect (m_amountInput, SIGNAL (valueChanged (int)),
+             this, SLOT (slotUpdateTypeLabel ()));
+}
+
+kpEffectBlurSharpenWidget::~kpEffectBlurSharpenWidget ()
+{
+}
+
+
+// public virtual [base kpColorEffectWidget]
+QString kpEffectBlurSharpenWidget::caption () const
+{
+    return QString::null;
+}
+
+
+// public virtual [base kpColorEffectWidget]
+bool kpEffectBlurSharpenWidget::isNoOp () const
+{
+    return (type () == kpEffectBlurSharpenCommand::None);
+}
+
+// public virtual [base kpColorEffectWidget]
+QPixmap kpEffectBlurSharpenWidget::applyColorEffect (const QPixmap &pixmap)
+{
+    return kpEffectBlurSharpenCommand::apply (pixmap,
+                                              type (), radius (), sigma (), repeat ());
+}
+
+// public virtual [base kpColorEffectWidget]
+kpColorEffectCommand *kpEffectBlurSharpenWidget::createCommand () const
+{
+    return new kpEffectBlurSharpenCommand (type (), radius (), sigma (), repeat (),
+                                           m_actOnSelection,
+                                           m_mainWindow);
+}
+
+
+// protected slot
+void kpEffectBlurSharpenWidget::slotUpdateTypeLabel ()
+{
+    QString text = ::nameForType (type ());
+
+#if DEBUG_KP_EFFECT_BLUR_SHARPEN
+    kdDebug () << "kpEffectBlurSharpenWidget::slotUpdateTypeLabel() text="
+               << text << endl;
+#endif
+    m_typeLabel->setText (text);
+}
+
+
+// protected
+kpEffectBlurSharpenCommand::Type kpEffectBlurSharpenWidget::type () const
+{
+    if (m_amountInput->value () == 0)
+        return kpEffectBlurSharpenCommand::None;
+    else if (m_amountInput->value () < 0)
+        return kpEffectBlurSharpenCommand::Blur;
+    else
+        return kpEffectBlurSharpenCommand::Sharpen;
+}
+
+// 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 kpEffectBlurSharpenWidget::radius () const
+{
+    if (m_amountInput->value () == 0)
+        return 0;
+
+    if (m_amountInput->value () < 0)
+    {
+        return 8;
+    }
+    else
+    {
+        const double SharpenMin = .1;
+        const double SharpenMax = 2.5;
+
+        return SharpenMin +
+                  (m_amountInput->value () - 1) *
+                      (SharpenMax - SharpenMin) /
+                          (m_amountInput->maxValue () - 1);
+    }
+}
+
+// protected
+double kpEffectBlurSharpenWidget::sigma () const
+{
+    if (m_amountInput->value () == 0)
+        return 0;
+
+    if (m_amountInput->value () < 0)
+    {
+        const double BlurMin = .5;
+        const double BlurMax = 4;
+
+        return BlurMin +
+                   (-m_amountInput->value () - 1) *
+                        (BlurMax - BlurMin) /
+                            (-m_amountInput->minValue () - 1);
+    }
+    else
+    {
+        const double SharpenMin = .5;
+        const double SharpenMax = 3.0;
+
+        return SharpenMin +
+                   (m_amountInput->value () - 1) *
+                       (SharpenMax - SharpenMin) /
+                           (m_amountInput->maxValue () - 1);
+    }
+}
+
+// protected
+int kpEffectBlurSharpenWidget::repeat () const
+{
+    if (m_amountInput->value () == 0)
+        return 0;
+
+    if (m_amountInput->value () < 0)
+        return 1;
+    else
+    {
+        const double SharpenMin = 1;
+        const double SharpenMax = 2;
+
+        return qRound (SharpenMin +
+                          (m_amountInput->value () - 1) *
+                              (SharpenMax - SharpenMin) /
+                                  (m_amountInput->maxValue () - 1));
+    }
+}
+
+#include <kpeffectblursharpen.moc>