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Diffstat (limited to 'kolourpaint/tools/kptoolrotate.cpp')
| -rw-r--r-- | kolourpaint/tools/kptoolrotate.cpp | 500 |
1 files changed, 500 insertions, 0 deletions
diff --git a/kolourpaint/tools/kptoolrotate.cpp b/kolourpaint/tools/kptoolrotate.cpp new file mode 100644 index 00000000..8a37b673 --- /dev/null +++ b/kolourpaint/tools/kptoolrotate.cpp @@ -0,0 +1,500 @@ + +/* + 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_TOOL_ROTATE 0 + + +#include <kptoolrotate.h> + +#include <qapplication.h> +#include <qbuttongroup.h> +#include <qgroupbox.h> +#include <qlabel.h> +#include <qlayout.h> +#include <qpushbutton.h> +#include <qradiobutton.h> +#include <qwmatrix.h> + +#include <kdebug.h> +#include <kiconloader.h> +#include <knuminput.h> +#include <klocale.h> + +#include <kpdefs.h> +#include <kpdocument.h> +#include <kpmainwindow.h> +#include <kppixmapfx.h> +#include <kpselection.h> +#include <kptool.h> +#include <kpviewmanager.h> + + +kpToolRotateCommand::kpToolRotateCommand (bool actOnSelection, + double angle, + kpMainWindow *mainWindow) + : kpCommand (mainWindow), + m_actOnSelection (actOnSelection), + m_angle (angle), + m_backgroundColor (mainWindow ? mainWindow->backgroundColor (actOnSelection) : kpColor::invalid), + m_losslessRotation (kpPixmapFX::isLosslessRotation (angle)) +{ +} + +kpToolRotateCommand::~kpToolRotateCommand () +{ +} + + +// public virtual [base kpCommand] +QString kpToolRotateCommand::name () const +{ + QString opName = i18n ("Rotate"); + + if (m_actOnSelection) + return i18n ("Selection: %1").arg (opName); + else + return opName; +} + + +// public virtual [base kpCommand] +int kpToolRotateCommand::size () const +{ + return kpPixmapFX::pixmapSize (m_oldPixmap) + + m_oldSelection.size (); +} + + +// public virtual [base kpCommand] +void kpToolRotateCommand::execute () +{ + kpDocument *doc = document (); + if (!doc) + return; + + + QApplication::setOverrideCursor (Qt::waitCursor); + + + if (!m_losslessRotation) + m_oldPixmap = *doc->pixmap (m_actOnSelection); + + + QPixmap newPixmap = kpPixmapFX::rotate (*doc->pixmap (m_actOnSelection), + m_angle, + m_backgroundColor); + + + if (m_actOnSelection) + { + kpSelection *sel = doc->selection (); + + // Save old selection + m_oldSelection = *sel; + m_oldSelection.setPixmap (QPixmap ()); + + + // Calculate new top left (so selection rotates about centre) + // (the Times2 trickery is used to reduce integer division error without + // resorting to the troublesome world of floating point) + QPoint oldCenterTimes2 (sel->x () * 2 + sel->width (), + sel->y () * 2 + sel->height ()); + QPoint newTopLeftTimes2 (oldCenterTimes2 - QPoint (newPixmap.width (), newPixmap.height ())); + QPoint newTopLeft (newTopLeftTimes2.x () / 2, newTopLeftTimes2.y () / 2); + + + // Calculate rotated points + QPointArray currentPoints = sel->points (); + currentPoints.translate (-currentPoints.boundingRect ().x (), + -currentPoints.boundingRect ().y ()); + QWMatrix rotateMatrix = kpPixmapFX::rotateMatrix (*doc->pixmap (m_actOnSelection), m_angle); + currentPoints = rotateMatrix.map (currentPoints); + currentPoints.translate (-currentPoints.boundingRect ().x () + newTopLeft.x (), + -currentPoints.boundingRect ().y () + newTopLeft.y ()); + + + if (currentPoints.boundingRect ().width () == newPixmap.width () && + currentPoints.boundingRect ().height () == newPixmap.height ()) + { + doc->setSelection (kpSelection (currentPoints, newPixmap, + m_oldSelection.transparency ())); + } + else + { + // TODO: fix the latter "victim of" problem in kpSelection by + // allowing the border width & height != pixmap width & height + // Or maybe autocrop? + #if DEBUG_KP_TOOL_ROTATE + kdDebug () << "kpToolRotateCommand::execute() currentPoints.boundingRect=" + << currentPoints.boundingRect () + << " newPixmap: w=" << newPixmap.width () + << " h=" << newPixmap.height () + << " (victim of rounding error and/or rotated-a-(rectangular)-pixmap-that-was-transparent-in-the-corners-making-sel-uselessly-bigger-than-needs-be)" + << endl; + #endif + doc->setSelection (kpSelection (kpSelection::Rectangle, + QRect (newTopLeft.x (), newTopLeft.y (), + newPixmap.width (), newPixmap.height ()), + newPixmap, + m_oldSelection.transparency ())); + } + + if (m_mainWindow->tool ()) + m_mainWindow->tool ()->somethingBelowTheCursorChanged (); + } + else + doc->setPixmap (newPixmap); + + + QApplication::restoreOverrideCursor (); +} + +// public virtual [base kpCommand] +void kpToolRotateCommand::unexecute () +{ + kpDocument *doc = document (); + if (!doc) + return; + + + QApplication::setOverrideCursor (Qt::waitCursor); + + + QPixmap oldPixmap; + + if (!m_losslessRotation) + { + oldPixmap = m_oldPixmap; + m_oldPixmap.resize (0, 0); + } + else + { + oldPixmap = kpPixmapFX::rotate (*doc->pixmap (m_actOnSelection), + 360 - m_angle, + m_backgroundColor); + } + + + if (!m_actOnSelection) + doc->setPixmap (oldPixmap); + else + { + kpSelection oldSelection = m_oldSelection; + oldSelection.setPixmap (oldPixmap); + doc->setSelection (oldSelection); + + if (m_mainWindow->tool ()) + m_mainWindow->tool ()->somethingBelowTheCursorChanged (); + } + + + QApplication::restoreOverrideCursor (); +} + + +/* + * kpToolRotateDialog + */ + + +// private static +int kpToolRotateDialog::s_lastWidth = -1, + kpToolRotateDialog::s_lastHeight = -1; + +// private static +bool kpToolRotateDialog::s_lastIsClockwise = true; +int kpToolRotateDialog::s_lastAngleRadioButtonID = 3; +int kpToolRotateDialog::s_lastAngleCustom = 0; + + +kpToolRotateDialog::kpToolRotateDialog (bool actOnSelection, + kpMainWindow *mainWindow, + const char *name) + : kpToolPreviewDialog (kpToolPreviewDialog::AllFeatures, + false/*don't reserve top row*/, + actOnSelection ? i18n ("Rotate Selection") : i18n ("Rotate Image"), + i18n ("After Rotate:"), + actOnSelection, mainWindow, name) +{ + // Too confusing - disable for now + s_lastAngleRadioButtonID = 3; + s_lastAngleCustom = 0; + + + createDirectionGroupBox (); + createAngleGroupBox (); + + + if (s_lastWidth > 0 && s_lastHeight > 0) + resize (s_lastWidth, s_lastHeight); + + + slotAngleCustomRadioButtonToggled (m_angleCustomRadioButton->isChecked ()); + slotUpdate (); +} + +kpToolRotateDialog::~kpToolRotateDialog () +{ + s_lastWidth = width (), s_lastHeight = height (); +} + + +// private +void kpToolRotateDialog::createDirectionGroupBox () +{ + QGroupBox *directionGroupBox = new QGroupBox (i18n ("Direction"), mainWidget ()); + addCustomWidget (directionGroupBox); + + + QLabel *antiClockwisePixmapLabel = new QLabel (directionGroupBox); + antiClockwisePixmapLabel->setPixmap (UserIcon ("image_rotate_anticlockwise")); + + QLabel *clockwisePixmapLabel = new QLabel (directionGroupBox); + clockwisePixmapLabel->setPixmap (UserIcon ("image_rotate_clockwise")); + + + m_antiClockwiseRadioButton = new QRadioButton (i18n ("Cou&nterclockwise"), directionGroupBox); + m_clockwiseRadioButton = new QRadioButton (i18n ("C&lockwise"), directionGroupBox); + + + m_antiClockwiseRadioButton->setChecked (!s_lastIsClockwise); + m_clockwiseRadioButton->setChecked (s_lastIsClockwise); + + + QButtonGroup *buttonGroup = new QButtonGroup (directionGroupBox); + buttonGroup->hide (); + + buttonGroup->insert (m_antiClockwiseRadioButton); + buttonGroup->insert (m_clockwiseRadioButton); + + + QGridLayout *directionLayout = new QGridLayout (directionGroupBox, + 2, 2, marginHint () * 2, spacingHint ()); + directionLayout->addWidget (antiClockwisePixmapLabel, 0, 0, Qt::AlignCenter); + directionLayout->addWidget (clockwisePixmapLabel, 0, 1, Qt::AlignCenter); + directionLayout->addWidget (m_antiClockwiseRadioButton, 1, 0, Qt::AlignCenter); + directionLayout->addWidget (m_clockwiseRadioButton, 1, 1, Qt::AlignCenter); + + + connect (m_antiClockwiseRadioButton, SIGNAL (toggled (bool)), + this, SLOT (slotUpdate ())); + connect (m_clockwiseRadioButton, SIGNAL (toggled (bool)), + this, SLOT (slotUpdate ())); +} + +// private +void kpToolRotateDialog::createAngleGroupBox () +{ + QGroupBox *angleGroupBox = new QGroupBox (i18n ("Angle"), mainWidget ()); + addCustomWidget (angleGroupBox); + + + m_angle90RadioButton = new QRadioButton (i18n ("90 °rees"), angleGroupBox); + m_angle180RadioButton = new QRadioButton (i18n ("180 d&egrees"), angleGroupBox); + m_angle270RadioButton = new QRadioButton (i18n ("270 de&grees"), angleGroupBox); + + m_angleCustomRadioButton = new QRadioButton (i18n ("C&ustom:"), angleGroupBox); + m_angleCustomInput = new KIntNumInput (s_lastAngleCustom, angleGroupBox); + m_angleCustomInput->setMinValue (-359); + m_angleCustomInput->setMaxValue (+359); + QLabel *degreesLabel = new QLabel (i18n ("degrees"), angleGroupBox); + + + m_angleButtonGroup = new QButtonGroup (angleGroupBox); + m_angleButtonGroup->hide (); + + m_angleButtonGroup->insert (m_angle90RadioButton); + m_angleButtonGroup->insert (m_angle180RadioButton); + m_angleButtonGroup->insert (m_angle270RadioButton); + + m_angleButtonGroup->insert (m_angleCustomRadioButton); + + m_angleButtonGroup->setButton (s_lastAngleRadioButtonID); + + + QGridLayout *angleLayout = new QGridLayout (angleGroupBox, + 6, 3, + marginHint () * 2, spacingHint ()); + + angleLayout->addMultiCellWidget (m_angle90RadioButton, 0, 0, 0, 2); + angleLayout->addMultiCellWidget (m_angle180RadioButton, 1, 1, 0, 2); + angleLayout->addMultiCellWidget (m_angle270RadioButton, 2, 2, 0, 2); + + angleLayout->addWidget (m_angleCustomRadioButton, 3, 0); + angleLayout->addWidget (m_angleCustomInput, 3, 1); + angleLayout->addWidget (degreesLabel, 3, 2); + + angleLayout->setColStretch (1, 2); // Stretch Custom Angle Input + + + connect (m_angle90RadioButton, SIGNAL (toggled (bool)), + this, SLOT (slotUpdate ())); + connect (m_angle180RadioButton, SIGNAL (toggled (bool)), + this, SLOT (slotUpdate ())); + connect (m_angle270RadioButton, SIGNAL (toggled (bool)), + this, SLOT (slotUpdate ())); + + connect (m_angleCustomRadioButton, SIGNAL (toggled (bool)), + this, SLOT (slotAngleCustomRadioButtonToggled (bool))); + connect (m_angleCustomRadioButton, SIGNAL (toggled (bool)), + this, SLOT (slotUpdate ())); + + connect (m_angleCustomInput, SIGNAL (valueChanged (int)), + this, SLOT (slotUpdate ())); +} + + +// public virtual [base kpToolPreviewDialog] +bool kpToolRotateDialog::isNoOp () const +{ + return (angle () == 0); +} + +// public +int kpToolRotateDialog::angle () const +{ + int retAngle; + + + if (m_angle90RadioButton->isChecked ()) + retAngle = 90; + else if (m_angle180RadioButton->isChecked ()) + retAngle = 180; + else if (m_angle270RadioButton->isChecked ()) + retAngle = 270; + else // if (m_angleCustomRadioButton->isChecked ()) + retAngle = m_angleCustomInput->value (); + + + if (m_antiClockwiseRadioButton->isChecked ()) + retAngle *= -1; + + + if (retAngle < 0) + retAngle += ((0 - retAngle) / 360 + 1) * 360; + + if (retAngle >= 360) + retAngle -= ((retAngle - 360) / 360 + 1) * 360; + + + return retAngle; +} + + +// private virtual [base kpToolPreviewDialog] +QSize kpToolRotateDialog::newDimensions () const +{ + QWMatrix matrix = kpPixmapFX::rotateMatrix (m_oldWidth, m_oldHeight, angle ()); + // TODO: Should we be using QWMatrix::Areas? + QRect rect = matrix.map (QRect (0, 0, m_oldWidth, m_oldHeight)); + return rect.size (); +} + +// private virtual [base kpToolPreviewDialog] +QPixmap kpToolRotateDialog::transformPixmap (const QPixmap &pixmap, + int targetWidth, int targetHeight) const +{ + return kpPixmapFX::rotate (pixmap, angle (), + m_mainWindow ? m_mainWindow->backgroundColor (m_actOnSelection) : kpColor::invalid, + targetWidth, targetHeight); +} + + +// private slot +void kpToolRotateDialog::slotAngleCustomRadioButtonToggled (bool isChecked) +{ + m_angleCustomInput->setEnabled (isChecked); + + if (isChecked) + m_angleCustomInput->setEditFocus (); +} + +// private slot virtual [base kpToolPreviewDialog] +void kpToolRotateDialog::slotUpdate () +{ + s_lastIsClockwise = m_clockwiseRadioButton->isChecked (); + s_lastAngleRadioButtonID = m_angleButtonGroup->selectedId (); + s_lastAngleCustom = m_angleCustomInput->value (); + + kpToolPreviewDialog::slotUpdate (); +} + + +// private slot virtual [base KDialogBase] +void kpToolRotateDialog::slotOk () +{ + QString message, caption, continueButtonText; + + if (document ()->selection ()) + { + if (!document ()->selection ()->isText ()) + { + message = + i18n ("<qt><p>Rotating 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 want to rotate the selection?</p></qt>"); + + caption = i18n ("Rotate Selection?"); + continueButtonText = i18n ("Rotat&e Selection"); + } + } + else + { + message = + i18n ("<qt><p>Rotating 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 want to rotate the image?</p></qt>"); + + caption = i18n ("Rotate Image?"); + continueButtonText = i18n ("Rotat&e Image"); + } + + + const int newWidth = newDimensions ().width (); + const int newHeight = newDimensions ().height (); + + if (kpTool::warnIfBigImageSize (m_oldWidth, + m_oldHeight, + newWidth, newHeight, + message.arg (newWidth).arg (newHeight), + caption, + continueButtonText, + this)) + { + KDialogBase::slotOk (); + } +} + +#include <kptoolrotate.moc> |