File indexing completed on 2024-06-02 04:23:48

 
 /*
    Copyright (c) 2003-2007 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_TOOL_SELECTION 0
 
 
 #include "kpToolSelectionResizeScaleCommand.h"
 
 #include "layers/selections/kpAbstractSelection.h"
 #include "layers/selections/image/kpAbstractImageSelection.h"
 #include "environments/commands/kpCommandEnvironment.h"
 #include "kpDefs.h"
 #include "document/kpDocument.h"
 #include "layers/selections/image/kpRectangularImageSelection.h"
 #include "layers/selections/text/kpTextSelection.h"
 #include "kpLogCategories.h"
 
 #include <QApplication>
 #include <QTimer>
 
 #include <KLocalizedString>
 
 //--------------------------------------------------------------------------------
 
 kpToolSelectionResizeScaleCommand::kpToolSelectionResizeScaleCommand (
         kpCommandEnvironment *environ)
     : kpNamedCommand (environ->textSelection () ?
                          i18n ("Text: Resize Box") :
                          i18n ("Selection: Smooth Scale"),
                       environ),
       m_smoothScaleTimer (new QTimer (this))
 {
     m_originalSelectionPtr = selection ()->clone ();
 
     m_newTopLeft = selection ()->topLeft ();
     m_newWidth = selection ()->width ();
     m_newHeight = selection ()->height ();
 
     m_smoothScaleTimer->setSingleShot (true);
     connect (m_smoothScaleTimer, &QTimer::timeout, this, [this]{resizeScaleAndMove(false);});
 }
 
 kpToolSelectionResizeScaleCommand::~kpToolSelectionResizeScaleCommand ()
 {
     delete m_originalSelectionPtr;
 }
 
 
 // public virtual
 kpCommandSize::SizeType kpToolSelectionResizeScaleCommand::size () const
 {
     return SelectionSize (m_originalSelectionPtr);
 }
 
 
 // public
 const kpAbstractSelection *kpToolSelectionResizeScaleCommand::originalSelection () const
 {
     return m_originalSelectionPtr;
 }
 
 
 // public
 QPoint kpToolSelectionResizeScaleCommand::topLeft () const
 {
     return m_newTopLeft;
 }
 
 // public
 void kpToolSelectionResizeScaleCommand::moveTo (const QPoint &point)
 {
     if (point == m_newTopLeft) {
         return;
     }
 
     m_newTopLeft = point;
     selection ()->moveTo (m_newTopLeft);
 }
 
 
 // public
 int kpToolSelectionResizeScaleCommand::width () const
 {
     return m_newWidth;
 }
 
 // public
 int kpToolSelectionResizeScaleCommand::height () const
 {
     return m_newHeight;
 }
 
 // public
 void kpToolSelectionResizeScaleCommand::resize (int width, int height,
                                                 bool delayed)
 {
     if (width == m_newWidth && height == m_newHeight) {
         return;
     }
 
     m_newWidth = width;
     m_newHeight = height;
 
     resizeScaleAndMove (delayed);
 }
 
 
 // public
 void kpToolSelectionResizeScaleCommand::resizeAndMoveTo (int width, int height,
                                                          const QPoint &point,
                                                          bool delayed)
 {
     if (width == m_newWidth && height == m_newHeight &&
         point == m_newTopLeft)
     {
         return;
     }
 
     m_newWidth = width;
     m_newHeight = height;
     m_newTopLeft = point;
 
     resizeScaleAndMove (delayed);
 }
 
 
 // protected
 void kpToolSelectionResizeScaleCommand::killSmoothScaleTimer ()
 {
     m_smoothScaleTimer->stop ();
 }
 
 
 // protected
 void kpToolSelectionResizeScaleCommand::resizeScaleAndMove (bool delayed)
 {
 #if DEBUG_KP_TOOL_SELECTION
     qCDebug(kpLogCommands) << "kpToolSelectionResizeScaleCommand::resizeScaleAndMove(delayed="
                << delayed << ")";
 #endif
 
     killSmoothScaleTimer ();
 
     kpAbstractSelection *newSelPtr = nullptr;
 
     if (textSelection ())
     {
         Q_ASSERT (dynamic_cast <kpTextSelection *> (m_originalSelectionPtr));
         auto *orgTextSel = dynamic_cast <kpTextSelection *> (m_originalSelectionPtr);
 
         newSelPtr = orgTextSel->resized (m_newWidth, m_newHeight);
     }
     else
     {
         Q_ASSERT (dynamic_cast <kpAbstractImageSelection *> (m_originalSelectionPtr));
         auto *imageSel = dynamic_cast <kpAbstractImageSelection *> (m_originalSelectionPtr);
 
         newSelPtr = new kpRectangularImageSelection (
             QRect (imageSel->x (),
                    imageSel->y (),
                    m_newWidth,
                    m_newHeight),
             kpPixmapFX::scale (imageSel->baseImage (),
                                m_newWidth, m_newHeight,
                                !delayed/*if not delayed, smooth*/),
             imageSel->transparency ());
 
         if (delayed)
         {
             // Call self (once) with delayed==false in 200ms
             m_smoothScaleTimer->start (200/*ms*/);
         }
     }
 
     Q_ASSERT (newSelPtr);
     newSelPtr->moveTo (m_newTopLeft);
 
     document ()->setSelection (*newSelPtr);
 
     delete newSelPtr;
 }
 
 
 // public
 void kpToolSelectionResizeScaleCommand::finalize ()
 {
 #if DEBUG_KP_TOOL_SELECTION
     qCDebug(kpLogCommands) << "kpToolSelectionResizeScaleCommand::finalize()"
                << " smoothScaleTimer->isActive="
                << m_smoothScaleTimer->isActive ();
 #endif
 
     // Make sure the selection contains the final image and the timer won't
     // fire afterwards.
     if (m_smoothScaleTimer->isActive ())
     {
         resizeScaleAndMove ();
         Q_ASSERT (!m_smoothScaleTimer->isActive ());
     }
 }
 
 
 // public virtual [base kpToolResizeScaleCommand]
 void kpToolSelectionResizeScaleCommand::execute ()
 {
     QApplication::setOverrideCursor (Qt::WaitCursor);
 
     killSmoothScaleTimer ();
 
     resizeScaleAndMove ();
 
     environ ()->somethingBelowTheCursorChanged ();
 
     QApplication::restoreOverrideCursor ();
 }
 
 // public virtual [base kpToolResizeScaleCommand]
 void kpToolSelectionResizeScaleCommand::unexecute ()
 {
     QApplication::setOverrideCursor (Qt::WaitCursor);
 
     killSmoothScaleTimer ();
 
     document ()->setSelection (*m_originalSelectionPtr);
 
     environ ()->somethingBelowTheCursorChanged ();
 
     QApplication::restoreOverrideCursor ();
 }
 
 #include "moc_kpToolSelectionResizeScaleCommand.cpp"