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Diffstat (limited to 'kolourpaint/tools/kptoolskew.cpp')
| -rw-r--r-- | kolourpaint/tools/kptoolskew.cpp | 449 |
1 files changed, 449 insertions, 0 deletions
diff --git a/kolourpaint/tools/kptoolskew.cpp b/kolourpaint/tools/kptoolskew.cpp new file mode 100644 index 00000000..f1e446be --- /dev/null +++ b/kolourpaint/tools/kptoolskew.cpp @@ -0,0 +1,449 @@ + +/* + 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_TOOL_SKEW 0 +#define DEBUG_KP_TOOL_SKEW_DIALOG 0 + + +#include <kptoolskew.h> + +#include <qapplication.h> +#include <qgroupbox.h> +#include <qlabel.h> +#include <qlayout.h> +#include <qpushbutton.h> +#include <qwmatrix.h> + +#include <kdebug.h> +#include <kiconloader.h> +#include <klocale.h> +#include <knuminput.h> + +#include <kpdefs.h> +#include <kpdocument.h> +#include <kpmainwindow.h> +#include <kppixmapfx.h> +#include <kpselection.h> +#include <kptool.h> + + +/* + * kpToolSkewCommand + */ + +kpToolSkewCommand::kpToolSkewCommand (bool actOnSelection, + int hangle, int vangle, + kpMainWindow *mainWindow) + : kpCommand (mainWindow), + m_actOnSelection (actOnSelection), + m_hangle (hangle), m_vangle (vangle), + m_backgroundColor (mainWindow ? mainWindow->backgroundColor (actOnSelection) : kpColor::invalid), + m_oldPixmapPtr (0) +{ +} + +kpToolSkewCommand::~kpToolSkewCommand () +{ + delete m_oldPixmapPtr; +} + + +// public virtual [base kpCommand] +QString kpToolSkewCommand::name () const +{ + QString opName = i18n ("Skew"); + + if (m_actOnSelection) + return i18n ("Selection: %1").arg (opName); + else + return opName; +} + + +// public virtual [base kpCommand] +int kpToolSkewCommand::size () const +{ + return kpPixmapFX::pixmapSize (m_oldPixmapPtr) + + m_oldSelection.size (); +} + + +// public virtual [base kpCommand] +void kpToolSkewCommand::execute () +{ + kpDocument *doc = document (); + if (!doc) + return; + + + QApplication::setOverrideCursor (Qt::waitCursor); + + + m_oldPixmapPtr = new QPixmap (); + *m_oldPixmapPtr = *doc->pixmap (m_actOnSelection); + + + QPixmap newPixmap = kpPixmapFX::skew (*doc->pixmap (m_actOnSelection), + kpToolSkewDialog::horizontalAngleForPixmapFX (m_hangle), + kpToolSkewDialog::verticalAngleForPixmapFX (m_vangle), + m_backgroundColor); + + if (m_actOnSelection) + { + kpSelection *sel = doc->selection (); + + // Save old selection + m_oldSelection = *sel; + + + // Calculate skewed points + QPointArray currentPoints = sel->points (); + currentPoints.translate (-currentPoints.boundingRect ().x (), + -currentPoints.boundingRect ().y ()); + QWMatrix skewMatrix = kpPixmapFX::skewMatrix ( + *doc->pixmap (m_actOnSelection), + kpToolSkewDialog::horizontalAngleForPixmapFX (m_hangle), + kpToolSkewDialog::verticalAngleForPixmapFX (m_vangle)); + currentPoints = skewMatrix.map (currentPoints); + currentPoints.translate (-currentPoints.boundingRect ().x () + m_oldSelection.x (), + -currentPoints.boundingRect ().y () + m_oldSelection.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_SKEW + kdDebug () << "kpToolSkewCommand::execute() currentPoints.boundingRect=" + << currentPoints.boundingRect () + << " newPixmap: w=" << newPixmap.width () + << " h=" << newPixmap.height () + << " (victim of rounding error and/or skewed-a-(rectangular)-pixmap-that-was-transparent-in-the-corners-making-sel-uselessly-bigger-than-needs-be))" + << endl; + #endif + doc->setSelection (kpSelection (kpSelection::Rectangle, + QRect (currentPoints.boundingRect ().x (), + currentPoints.boundingRect ().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 kpToolSkewCommand::unexecute () +{ + kpDocument *doc = document (); + if (!doc) + return; + + + QApplication::setOverrideCursor (Qt::waitCursor); + + + QPixmap oldPixmap = *m_oldPixmapPtr; + delete m_oldPixmapPtr; m_oldPixmapPtr = 0; + + + if (!m_actOnSelection) + doc->setPixmap (oldPixmap); + else + { + kpSelection oldSelection = m_oldSelection; + doc->setSelection (oldSelection); + + if (m_mainWindow->tool ()) + m_mainWindow->tool ()->somethingBelowTheCursorChanged (); + } + + + QApplication::restoreOverrideCursor (); +} + + +/* + * kpToolSkewDialog + */ + + +// private static +int kpToolSkewDialog::s_lastWidth = -1, + kpToolSkewDialog::s_lastHeight = -1; + +// private static +int kpToolSkewDialog::s_lastHorizontalAngle = 0, + kpToolSkewDialog::s_lastVerticalAngle = 0; + + +kpToolSkewDialog::kpToolSkewDialog (bool actOnSelection, kpMainWindow *parent, + const char *name) + : kpToolPreviewDialog (kpToolPreviewDialog::AllFeatures, + false/*don't reserve top row*/, + actOnSelection ? i18n ("Skew Selection") : i18n ("Skew Image"), + i18n ("After Skew:"), + actOnSelection, parent, name) +{ + // 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->setEditFocus (); +} + +kpToolSkewDialog::~kpToolSkewDialog () +{ + s_lastWidth = width (), s_lastHeight = height (); +} + + +// private +void kpToolSkewDialog::createAngleGroupBox () +{ + QGroupBox *angleGroupBox = new QGroupBox (i18n ("Angle"), mainWidget ()); + addCustomWidget (angleGroupBox); + + + QLabel *horizontalSkewPixmapLabel = new QLabel (angleGroupBox); + horizontalSkewPixmapLabel->setPixmap (UserIcon ("image_skew_horizontal")); + + QLabel *horizontalSkewLabel = new QLabel (i18n ("&Horizontal:"), angleGroupBox); + m_horizontalSkewInput = new KIntNumInput (s_lastHorizontalAngle, angleGroupBox); + m_horizontalSkewInput->setMinValue (-89); + m_horizontalSkewInput->setMaxValue (+89); + + QLabel *horizontalSkewDegreesLabel = new QLabel (i18n ("degrees"), angleGroupBox); + + + QLabel *verticalSkewPixmapLabel = new QLabel (angleGroupBox); + verticalSkewPixmapLabel->setPixmap (UserIcon ("image_skew_vertical")); + + QLabel *verticalSkewLabel = new QLabel (i18n ("&Vertical:"), angleGroupBox); + m_verticalSkewInput = new KIntNumInput (s_lastVerticalAngle, angleGroupBox); + m_verticalSkewInput->setMinValue (-89); + m_verticalSkewInput->setMaxValue (+89); + + QLabel *verticalSkewDegreesLabel = new QLabel (i18n ("degrees"), angleGroupBox); + + + horizontalSkewLabel->setBuddy (m_horizontalSkewInput); + verticalSkewLabel->setBuddy (m_verticalSkewInput); + + + QGridLayout *angleLayout = new QGridLayout (angleGroupBox, 4, 4, + marginHint () * 2, spacingHint ()); + + angleLayout->addWidget (horizontalSkewPixmapLabel, 0, 0); + angleLayout->addWidget (horizontalSkewLabel, 0, 1); + angleLayout->addWidget (m_horizontalSkewInput, 0, 2); + angleLayout->addWidget (horizontalSkewDegreesLabel, 0, 3); + + angleLayout->addWidget (verticalSkewPixmapLabel, 1, 0); + angleLayout->addWidget (verticalSkewLabel, 1, 1); + angleLayout->addWidget (m_verticalSkewInput, 1, 2); + angleLayout->addWidget (verticalSkewDegreesLabel, 1, 3); + + + connect (m_horizontalSkewInput, SIGNAL (valueChanged (int)), + this, SLOT (slotUpdate ())); + connect (m_verticalSkewInput, SIGNAL (valueChanged (int)), + this, SLOT (slotUpdate ())); +} + + +// private virtual [base kpToolPreviewDialog] +QSize kpToolSkewDialog::newDimensions () const +{ + kpDocument *doc = document (); + if (!doc) + return QSize (); + + QWMatrix skewMatrix = kpPixmapFX::skewMatrix (*doc->pixmap (), + horizontalAngleForPixmapFX (), + verticalAngleForPixmapFX ()); + // TODO: Should we be using QWMatrix::Areas? + QRect skewRect = skewMatrix.mapRect (doc->rect (m_actOnSelection)); + + return QSize (skewRect.width (), skewRect.height ()); +} + +// private virtual [base kpToolPreviewDialog] +QPixmap kpToolSkewDialog::transformPixmap (const QPixmap &pixmap, + int targetWidth, int targetHeight) const +{ + return kpPixmapFX::skew (pixmap, + horizontalAngleForPixmapFX (), + verticalAngleForPixmapFX (), + m_mainWindow ? m_mainWindow->backgroundColor (m_actOnSelection) : kpColor::invalid, + targetWidth, + targetHeight); +} + + +// private +void kpToolSkewDialog::updateLastAngles () +{ + s_lastHorizontalAngle = horizontalAngle (); + s_lastVerticalAngle = verticalAngle (); +} + +// private slot virtual [base kpToolPreviewDialog] +void kpToolSkewDialog::slotUpdate () +{ + updateLastAngles (); + kpToolPreviewDialog::slotUpdate (); +} + + +// public +int kpToolSkewDialog::horizontalAngle () const +{ + return m_horizontalSkewInput->value (); +} + +// public +int kpToolSkewDialog::verticalAngle () const +{ + return m_verticalSkewInput->value (); +} + + +// public static +int kpToolSkewDialog::horizontalAngleForPixmapFX (int hangle) +{ + return -hangle; +} + +// public static +int kpToolSkewDialog::verticalAngleForPixmapFX (int vangle) +{ + return -vangle; +} + + +// public +int kpToolSkewDialog::horizontalAngleForPixmapFX () const +{ + return kpToolSkewDialog::horizontalAngleForPixmapFX (horizontalAngle ()); +} + +// public +int kpToolSkewDialog::verticalAngleForPixmapFX () const +{ + return kpToolSkewDialog::verticalAngleForPixmapFX (verticalAngle ()); +} + + +// public virtual [base kpToolPreviewDialog] +bool kpToolSkewDialog::isNoOp () const +{ + return (horizontalAngle () == 0) && (verticalAngle () == 0); +} + + +// private slot virtual [base KDialogBase] +void kpToolSkewDialog::slotOk () +{ + QString message, caption, continueButtonText; + + if (document ()->selection ()) + { + if (!document ()->selection ()->isText ()) + { + message = + i18n ("<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 want to skew the selection?</p></qt>"); + + caption = i18n ("Skew Selection?"); + continueButtonText = i18n ("Sk&ew Selection"); + } + } + else + { + message = + i18n ("<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 want to skew the image?</p></qt>"); + + caption = i18n ("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.arg (newWidth).arg (newHeight), + caption, + continueButtonText, + this)) + { + KDialogBase::slotOk (); + } +} + +#include <kptoolskew.moc> |