/* Copyright (c) 2003,2004,2005 Clarence Dang 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_PREVIEW_DIALOG 0 #include #include #include #include #include #include #include #include #include #include #include #include #include #include kpToolPreviewDialog::kpToolPreviewDialog (Features features, bool reserveTopRow, const QString &caption, const QString &afterActionText, bool actOnSelection, kpMainWindow *parent, const char *name) : KDialogBase (parent, name, true/*modal*/, caption, KDialogBase::Ok | KDialogBase::Cancel), m_afterActionText (afterActionText), m_actOnSelection (actOnSelection), m_mainWindow (parent), m_dimensionsGroupBox (0), m_afterTransformDimensionsLabel (0), m_previewGroupBox (0), m_previewPixmapLabel (0), m_gridLayout (0) { QWidget *baseWidget = new QWidget (this); setMainWidget (baseWidget); if (document ()) { m_oldWidth = document ()->width (actOnSelection); m_oldHeight = document ()->height (actOnSelection); } else { m_oldWidth = m_oldHeight = 1; } if (features & Dimensions) createDimensionsGroupBox (); if (features & Preview) createPreviewGroupBox (); m_gridLayout = new QGridLayout (baseWidget, 4, 2, 0/*margin*/, spacingHint ()); m_gridNumRows = reserveTopRow ? 1 : 0; if (m_dimensionsGroupBox || m_previewGroupBox) { if (m_dimensionsGroupBox && m_previewGroupBox) { m_gridLayout->addWidget (m_dimensionsGroupBox, m_gridNumRows, 0); m_gridLayout->addWidget (m_previewGroupBox, m_gridNumRows, 1); m_gridLayout->setColStretch (1, 1); } else if (m_dimensionsGroupBox) { m_gridLayout->addMultiCellWidget (m_dimensionsGroupBox, m_gridNumRows, m_gridNumRows, 0, 1); } else if (m_previewGroupBox) { m_gridLayout->addMultiCellWidget (m_previewGroupBox, m_gridNumRows, m_gridNumRows, 0, 1); } m_gridLayout->setRowStretch (m_gridNumRows, 1); m_gridNumRows++;; } } kpToolPreviewDialog::~kpToolPreviewDialog () { } // private void kpToolPreviewDialog::createDimensionsGroupBox () { m_dimensionsGroupBox = new QGroupBox (i18n ("Dimensions"), mainWidget ()); QLabel *originalLabel = new QLabel (i18n ("Original:"), m_dimensionsGroupBox); QString originalDimensions; if (document ()) { originalDimensions = i18n ("%1 x %2") .arg (m_oldWidth) .arg (m_oldHeight); // Stop the Dimensions Group Box from resizing so often const QString minimumLengthString ("100000 x 100000"); const int padLength = minimumLengthString.length (); for (int i = originalDimensions.length (); i < padLength; i++) originalDimensions += " "; } QLabel *originalDimensionsLabel = new QLabel (originalDimensions, m_dimensionsGroupBox); QLabel *afterTransformLabel = new QLabel (m_afterActionText, m_dimensionsGroupBox); m_afterTransformDimensionsLabel = new QLabel (m_dimensionsGroupBox); QGridLayout *dimensionsLayout = new QGridLayout (m_dimensionsGroupBox, 2, 2, marginHint () * 2, spacingHint ()); dimensionsLayout->addWidget (originalLabel, 0, 0, Qt::AlignBottom); dimensionsLayout->addWidget (originalDimensionsLabel, 0, 1, Qt::AlignBottom); dimensionsLayout->addWidget (afterTransformLabel, 1, 0, Qt::AlignTop); dimensionsLayout->addWidget (m_afterTransformDimensionsLabel, 1, 1, Qt::AlignTop); } // private void kpToolPreviewDialog::createPreviewGroupBox () { m_previewGroupBox = new QGroupBox (i18n ("Preview"), mainWidget ()); m_previewPixmapLabel = new kpResizeSignallingLabel (m_previewGroupBox); m_previewPixmapLabel->setMinimumSize (150, 110); connect (m_previewPixmapLabel, SIGNAL (resized ()), this, SLOT (updatePreview ())); QPushButton *updatePushButton = new QPushButton (i18n ("&Update"), m_previewGroupBox); connect (updatePushButton, SIGNAL (clicked ()), this, SLOT (slotUpdateWithWaitCursor ())); QVBoxLayout *previewLayout = new QVBoxLayout (m_previewGroupBox, marginHint () * 2, QMAX (1, spacingHint () / 2)); previewLayout->addWidget (m_previewPixmapLabel, 1/*stretch*/); previewLayout->addWidget (updatePushButton, 0/*stretch*/, Qt::AlignHCenter); } // protected kpDocument *kpToolPreviewDialog::document () const { return m_mainWindow ? m_mainWindow->document () : 0; } // protected void kpToolPreviewDialog::addCustomWidgetToFront (QWidget *w) { m_gridLayout->addMultiCellWidget (w, 0, 0, 0, 1); } // protected void kpToolPreviewDialog::addCustomWidget (QWidget *w) { m_gridLayout->addMultiCellWidget (w, m_gridNumRows, m_gridNumRows, 0, 1); m_gridNumRows++; } // private void kpToolPreviewDialog::updateDimensions () { if (!m_dimensionsGroupBox) return; kpDocument *doc = document (); if (!doc) return; QSize newDim = newDimensions (); #if DEBUG_KP_TOOL_PREVIEW_DIALOG kdDebug () << "kpToolPreviewDialog::updateDimensions(): newDim=" << newDim << endl; #endif QString newDimString = i18n ("%1 x %2") .arg (newDim.width ()) .arg (newDim.height ()); m_afterTransformDimensionsLabel->setText (newDimString); } // public static double kpToolPreviewDialog::aspectScale (int newWidth, int newHeight, int oldWidth, int oldHeight) { double widthScale = double (newWidth) / double (oldWidth); double heightScale = double (newHeight) / double (oldHeight); // Keeps aspect ratio return QMIN (widthScale, heightScale); } // public static int kpToolPreviewDialog::scaleDimension (int dimension, double scale, int min, int max) { return QMAX (min, QMIN (max, qRound (dimension * scale))); } // private void kpToolPreviewDialog::updateShrukenDocumentPixmap () { #if DEBUG_KP_TOOL_PREVIEW_DIALOG kdDebug () << "kpToolPreviewDialog::updateShrukenDocumentPixmap()" << " shrunkenDocPixmap.size=" << m_shrunkenDocumentPixmap.size () << " previewPixmapLabelSizeWhenUpdatedPixmap=" << m_previewPixmapLabelSizeWhenUpdatedPixmap << " previewPixmapLabel.size=" << m_previewPixmapLabel->size () << endl; #endif if (!m_previewGroupBox) return; kpDocument *doc = document (); if (!doc || !doc->pixmap ()) { kdError () << "kpToolPreviewDialog::updateShrunkenDocumentPixmap() doc=" << doc << endl; return; } if (m_shrunkenDocumentPixmap.isNull () || m_previewPixmapLabel->size () != m_previewPixmapLabelSizeWhenUpdatedPixmap) { #if DEBUG_KP_TOOL_PREVIEW_DIALOG kdDebug () << "\tupdating shrunkenDocPixmap" << endl; #endif // TODO: Why the need to keep aspect ratio here? // Isn't scaling the skewed result maintaining aspect enough? double keepsAspectScale = aspectScale (m_previewPixmapLabel->width (), m_previewPixmapLabel->height (), m_oldWidth, m_oldHeight); QPixmap pixmap; if (m_actOnSelection) { kpSelection sel = *doc->selection (); if (!sel.pixmap ()) sel.setPixmap (doc->getSelectedPixmap ()); pixmap = sel.transparentPixmap (); } else { pixmap = *doc->pixmap (); } m_shrunkenDocumentPixmap = kpPixmapFX::scale ( pixmap, scaleDimension (m_oldWidth, keepsAspectScale, 1, m_previewPixmapLabel->width ()), scaleDimension (m_oldHeight, keepsAspectScale, 1, m_previewPixmapLabel->height ())); #if 0 m_shrunkenDocumentPixmap = kpPixmapFX::scale ( m_actOnSelection ? doc->getSelectedPixmap () : *doc->pixmap (), m_previewPixmapLabel->width (), m_previewPixmapLabel->height ()); #endif m_previewPixmapLabelSizeWhenUpdatedPixmap = m_previewPixmapLabel->size (); } } // private void kpToolPreviewDialog::updatePreview () { #if DEBUG_KP_TOOL_PREVIEW_DIALOG kdDebug () << "kpToolPreviewDialog::updatePreview()" << endl; #endif if (!m_previewGroupBox) return; kpDocument *doc = document (); if (!doc) return; updateShrukenDocumentPixmap (); if (!m_shrunkenDocumentPixmap.isNull ()) { QSize newDim = newDimensions (); double keepsAspectScale = aspectScale (m_previewPixmapLabel->width (), m_previewPixmapLabel->height (), newDim.width (), newDim.height ()); int targetWidth = scaleDimension (newDim.width (), keepsAspectScale, 1, // min m_previewPixmapLabel->width ()); // max int targetHeight = scaleDimension (newDim.height (), keepsAspectScale, 1, // min m_previewPixmapLabel->height ()); // max // TODO: Some effects work directly on QImage; so could cache the // QImage so that transformPixmap() is faster QPixmap transformedShrunkenDocumentPixmap = transformPixmap (m_shrunkenDocumentPixmap, targetWidth, targetHeight); QPixmap previewPixmap (m_previewPixmapLabel->width (), m_previewPixmapLabel->height ()); kpPixmapFX::fill (&previewPixmap, kpColor::transparent); kpPixmapFX::setPixmapAt (&previewPixmap, (previewPixmap.width () - transformedShrunkenDocumentPixmap.width ()) / 2, (previewPixmap.height () - transformedShrunkenDocumentPixmap.height ()) / 2, transformedShrunkenDocumentPixmap); #if DEBUG_KP_TOOL_PREVIEW_DIALOG kdDebug () << "kpToolPreviewDialog::updatePreview ():" << " shrunkenDocumentPixmap: w=" << m_shrunkenDocumentPixmap.width () << " h=" << m_shrunkenDocumentPixmap.height () << " previewPixmapLabel: w=" << m_previewPixmapLabel->width () << " h=" << m_previewPixmapLabel->height () << " transformedShrunkenDocumentPixmap: w=" << transformedShrunkenDocumentPixmap.width () << " h=" << transformedShrunkenDocumentPixmap.height () << " previewPixmap: w=" << previewPixmap.width () << " h=" << previewPixmap.height () << endl; #endif m_previewPixmapLabel->setPixmap (previewPixmap); // immediate update esp. for expensive previews m_previewPixmapLabel->repaint (false/*no erase*/); #if DEBUG_KP_TOOL_PREVIEW_DIALOG kdDebug () << "\tafter QLabel::setPixmap() previewPixmapLabel: w=" << m_previewPixmapLabel->width () << " h=" << m_previewPixmapLabel->height () << endl; #endif } } // protected slot virtual void kpToolPreviewDialog::slotUpdate () { #if DEBUG_KP_TOOL_PREVIEW_DIALOG kdDebug () << "kpToolPreviewDialog::slotUpdate()" << endl; #endif updateDimensions (); updatePreview (); } // protected slot virtual void kpToolPreviewDialog::slotUpdateWithWaitCursor () { #if DEBUG_KP_TOOL_PREVIEW_DIALOG kdDebug () << "kpToolPreviewDialog::slotUpdateWithWaitCursor()" << endl; #endif QApplication::setOverrideCursor (Qt::waitCursor); slotUpdate (); QApplication::restoreOverrideCursor (); } #include