File indexing completed on 2024-05-26 04:24:44

 /*
    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_SKEW 0
 #define DEBUG_KP_TOOL_SKEW_DIALOG 0
 
 
 #include "dialogs/imagelib/transforms/kpTransformSkewDialog.h"
 
 #include <QGridLayout>
 #include <QGroupBox>
 #include <QLabel>
 #include <QPushButton>
 #include <QImage>
 #include <QSpinBox>
 
 #include "kpLogCategories.h"
 #include <KLocalizedString>
 
 #include "kpDefs.h"
 #include "document/kpDocument.h"
 #include "pixmapfx/kpPixmapFX.h"
 #include "tools/kpTool.h"
 #include "environments/dialogs/imagelib/transforms/kpTransformDialogEnvironment.h"
 
 
 // private static
 int kpTransformSkewDialog::s_lastWidth = -1,
     kpTransformSkewDialog::s_lastHeight = -1;
 
 // private static
 int kpTransformSkewDialog::s_lastHorizontalAngle = 0,
     kpTransformSkewDialog::s_lastVerticalAngle = 0;
 
 
 kpTransformSkewDialog::kpTransformSkewDialog (bool actOnSelection,
         kpTransformDialogEnvironment *_env, QWidget *parent)
     : kpTransformPreviewDialog (kpTransformPreviewDialog::AllFeatures,
         false/*don't reserve top row*/,
         actOnSelection ? i18nc ("@title:window", "Skew Selection") : i18nc ("@title:window", "Skew Image"),
         i18n ("After skew:"),
         actOnSelection,
         _env, parent)
 {
     // Too confusing - disable for now
     s_lastHorizontalAngle = s_lastVerticalAngle = 0;
 
 
     createAngleGroupBox ();
 
 
     if (s_lastWidth > 0 && s_lastHeight > 0) {
         resize (s_lastWidth, s_lastHeight);
     }
 
 
     slotUpdate ();
     
 
     m_horizontalSkewInput->setFocus ();
 }
 
 kpTransformSkewDialog::~kpTransformSkewDialog ()
 {
     s_lastWidth = width ();
     s_lastHeight = height ();
 }
 
 
 // private
 void kpTransformSkewDialog::createAngleGroupBox ()
 {
     auto *angleGroupBox = new QGroupBox (i18n ("Angle"), mainWidget ());
     addCustomWidget (angleGroupBox);
 
 
     auto *horizontalSkewPixmapLabel = new QLabel (angleGroupBox);
     horizontalSkewPixmapLabel->setPixmap (QStringLiteral(":/icons/image_skew_horizontal"));
 
     auto *horizontalSkewLabel = new QLabel (i18n ("&Horizontal:"), angleGroupBox);
     m_horizontalSkewInput = new QSpinBox;
     m_horizontalSkewInput->setValue(s_lastHorizontalAngle);
     m_horizontalSkewInput->setMinimum(-89);
     m_horizontalSkewInput->setMaximum(+89);
 
     auto *horizontalSkewDegreesLabel = new QLabel (i18n ("degrees"), angleGroupBox);
 
 
     auto *verticalSkewPixmapLabel = new QLabel (angleGroupBox);
     verticalSkewPixmapLabel->setPixmap (QStringLiteral(":/icons/image_skew_vertical"));
 
     auto *verticalSkewLabel = new QLabel (i18n ("&Vertical:"), angleGroupBox);
     m_verticalSkewInput = new QSpinBox;
     m_verticalSkewInput->setValue(s_lastVerticalAngle);
     m_verticalSkewInput->setMinimum(-89);
     m_verticalSkewInput->setMaximum(+89);
 
     auto *verticalSkewDegreesLabel = new QLabel (i18n ("degrees"), angleGroupBox);
 
 
     horizontalSkewLabel->setBuddy (m_horizontalSkewInput);
     verticalSkewLabel->setBuddy (m_verticalSkewInput);
 
 
     auto *angleLayout = new QGridLayout (angleGroupBox);
 
     angleLayout->addWidget (horizontalSkewPixmapLabel, 0, 0);
     angleLayout->addWidget (horizontalSkewLabel, 0, 1);
     angleLayout->addWidget (m_horizontalSkewInput, 0, 2, Qt::AlignVCenter);
     angleLayout->addWidget (horizontalSkewDegreesLabel, 0, 3);
 
     angleLayout->addWidget (verticalSkewPixmapLabel, 1, 0);
     angleLayout->addWidget (verticalSkewLabel, 1, 1);
     angleLayout->addWidget (m_verticalSkewInput, 1, 2, Qt::AlignVCenter);
     angleLayout->addWidget (verticalSkewDegreesLabel, 1, 3);
 
 
     connect (m_horizontalSkewInput,
              static_cast<void (QSpinBox::*)(int)>(&QSpinBox::valueChanged),
              this, &kpTransformSkewDialog::slotUpdate);
 
     connect (m_verticalSkewInput,
              static_cast<void (QSpinBox::*)(int)>(&QSpinBox::valueChanged),
              this, &kpTransformSkewDialog::slotUpdate);
 }
 
 
 // private virtual [base kpTransformPreviewDialog]
 QSize kpTransformSkewDialog::newDimensions () const
 {
     kpDocument *doc = document ();
     Q_ASSERT (doc);
 
     auto skewMatrix = kpPixmapFX::skewMatrix (doc->image (),
                                                   horizontalAngleForPixmapFX (),
                                                   verticalAngleForPixmapFX ());
     auto skewRect = skewMatrix.mapRect (doc->rect (m_actOnSelection));
 
     return  {skewRect.width (), skewRect.height ()};
 }
 
 // private virtual [base kpTransformPreviewDialog]
 QImage kpTransformSkewDialog::transformPixmap (const QImage &image,
                                            int targetWidth, int targetHeight) const
 {
     return kpPixmapFX::skew (image,
                              horizontalAngleForPixmapFX (),
                              verticalAngleForPixmapFX (),
                              m_environ->backgroundColor (m_actOnSelection),
                              targetWidth,
                              targetHeight);
 }
 
 
 // private
 void kpTransformSkewDialog::updateLastAngles ()
 {
     s_lastHorizontalAngle = horizontalAngle ();
     s_lastVerticalAngle = verticalAngle ();
 }
 
 // private slot virtual [base kpTransformPreviewDialog]
 void kpTransformSkewDialog::slotUpdate ()
 {
     updateLastAngles ();
     kpTransformPreviewDialog::slotUpdate ();
 }
 
 
 // public
 int kpTransformSkewDialog::horizontalAngle () const
 {
     return m_horizontalSkewInput->value ();
 }
 
 // public
 int kpTransformSkewDialog::verticalAngle () const
 {
     return m_verticalSkewInput->value ();
 }
 
 
 // public static
 int kpTransformSkewDialog::horizontalAngleForPixmapFX (int hangle)
 {
     return -hangle;
 }
 
 // public static
 int kpTransformSkewDialog::verticalAngleForPixmapFX (int vangle)
 {
     return -vangle;
 }
 
 
 // public
 int kpTransformSkewDialog::horizontalAngleForPixmapFX () const
 {
     return kpTransformSkewDialog::horizontalAngleForPixmapFX (horizontalAngle ());
 }
 
 // public
 int kpTransformSkewDialog::verticalAngleForPixmapFX () const
 {
     return kpTransformSkewDialog::verticalAngleForPixmapFX (verticalAngle ());
 }
 
 
 // public virtual [base kpTransformPreviewDialog]
 bool kpTransformSkewDialog::isNoOp () const
 {
     return (horizontalAngle () == 0) && (verticalAngle () == 0);
 }
 
 
 // private slot virtual [base QDialog]
 void kpTransformSkewDialog::accept ()
 {
     KLocalizedString message;
     QString caption, continueButtonText;
 
     if (document ()->selection ())
     {
         if (!document ()->textSelection ())
         {
             message =
                 ki18n ("<qt><p>Skewing the selection to %1x%2"
                       " may take a substantial amount of memory."
                       " This can reduce system"
                       " responsiveness and cause other application resource"
                       " problems.</p>"
 
                       "<p>Are you sure you want to skew the selection?</p></qt>");
 
             caption = i18nc ("@title:window", "Skew Selection?");
             continueButtonText = i18n ("Sk&ew Selection");
         }
     }
     else
     {
         message =
             ki18n ("<qt><p>Skewing the image to %1x%2"
                   " may take a substantial amount of memory."
                   " This can reduce system"
                   " responsiveness and cause other application resource"
                   " problems.</p>"
 
                   "<p>Are you sure you want to skew the image?</p></qt>");
 
         caption = i18nc ("@title:window", "Skew Image?");
         continueButtonText = i18n ("Sk&ew Image");
     }
 
 
     const int newWidth = newDimensions ().width ();
     const int newHeight = newDimensions ().height ();
 
     if (kpTool::warnIfBigImageSize (m_oldWidth,
             m_oldHeight,
             newWidth, newHeight,
             message.subs (newWidth).subs (newHeight).toString (),
             caption,
             continueButtonText,
             this))
     {
         QDialog::accept ();
     }
 }
 
 #include "moc_kpTransformSkewDialog.cpp"