/* 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_SELECTION_DRAG 0 #include <kpselectiondrag.h> #include <tqdatastream.h> #include <kdebug.h> #include <kppixmapfx.h> #include <kpselection.h> // public static const char * const kpSelectionDrag::selectionMimeType = "application/x-kolourpaint-selection"; kpSelectionDrag::kpSelectionDrag (TQWidget *dragSource, const char *name) : TQImageDrag (dragSource, name) { } kpSelectionDrag::kpSelectionDrag (const TQImage &image, TQWidget *dragSource, const char *name) : TQImageDrag (image, dragSource, name) { } kpSelectionDrag::kpSelectionDrag (const kpSelection &sel, TQWidget *dragSource, const char *name) : TQImageDrag (dragSource, name) { setSelection (sel); } kpSelectionDrag::~kpSelectionDrag () { } // public void kpSelectionDrag::setSelection (const kpSelection &sel) { if (!sel.pixmap ()) { kdError () << "kpSelectionDrag::setSelection() without pixmap" << endl; return; } m_selection = sel; // OPT: an awful waste of memory storing image in both selection and TQImage // HACK: need to set image else TQImageDrag::format() lies setImage (kpPixmapFX::convertToImage (*m_selection.pixmap ())); } // protected bool kpSelectionDrag::holdsSelection () const { return bool (m_selection.pixmap ()); } // public virtual [base TQMimeSource] const char *kpSelectionDrag::format (int which) const { #if DEBUG_KP_SELECTION_DRAG && 0 kdDebug () << "kpSelectionDrag::format(" << which << ")" << endl; #endif const char *ret = TQImageDrag::format (which); if (ret) { #if DEBUG_KP_SELECTION_DRAG && 0 kdDebug () << "\tTQImageDrag reports " << ret << endl; #endif return ret; } int i; for (i = 0; TQImageDrag::format (i); i++) ; #if DEBUG_KP_SELECTION_DRAG && 0 kdDebug () << "\tend of TQImageDrag format list at " << i << endl; #endif if (i == which) { #if DEBUG_KP_SELECTION_DRAG && 0 kdDebug () << "\treturning own mimetype" << endl; #endif return kpSelectionDrag::selectionMimeType; } else { #if DEBUG_KP_SELECTION_DRAG && 0 kdDebug () << "\treturning non-existent" << endl; #endif return 0; } } // public virtual [base TQMimeSource] // Don't need to override in TQt 3.2 (the TQMimeSource base will work) // but we do so just in case TQImageDrag later decides to override it. bool kpSelectionDrag::provides (const char *mimeType) const { #if DEBUG_KP_SELECTION_DRAG kdDebug () << "kpSelectionDrag::provides(" << mimeType << ")" << endl; #endif if (!mimeType) return false; return (!strcmp (mimeType, kpSelectionDrag::selectionMimeType) || TQImageDrag::provides (mimeType)); } // public virtual [base TQMimeSource] TQByteArray kpSelectionDrag::tqencodedData (const char *mimeType) const { #if DEBUG_KP_SELECTION_DRAG kdDebug () << "kpSelectionDrag::tqencodedData(" << mimeType << ")" << endl; #endif if (!mimeType) return TQByteArray (); if (!strcmp (mimeType, kpSelectionDrag::selectionMimeType)) { TQByteArray ba; TQDataStream stream (ba, IO_WriteOnly); #if DEBUG_KP_SELECTION_DRAG kdDebug () << "\twant it as kpSelection in TQByteArray" << endl; #endif if (holdsSelection ()) { #if DEBUG_KP_SELECTION_DRAG kdDebug () << "\t\thave selection - return it" << endl; #endif stream << m_selection; } else { #if DEBUG_KP_SELECTION_DRAG kdDebug () << "\t\thave image - call kpSelectionDrag::decode(TQImage)" << endl; #endif TQImage image; if (kpSelectionDrag::decode (this, image/*ref*/)) { #if DEBUG_KP_SELECTION_DRAG kdDebug () << "\t\t\tok - returning sel with image w=" << image.width () << " h=" << image.height () << endl; #endif TQPixmap pixmap = kpPixmapFX::convertToPixmapAsLosslessAsPossible (image); stream << kpSelection (kpSelection::Rectangle, TQRect (0, 0, pixmap.width (), pixmap.height ()), pixmap); } else { kdError () << "kpSelectionDrag::tqencodedData(" << mimeType << ")" << " kpSelectionDrag(TQImage) could not decode data into TQImage" << endl; stream << kpSelection (); } } return ba; } else { #if DEBUG_KP_SELECTION_DRAG kdDebug () << "\twant it as TQImage in TQByteArray" << endl; #endif return TQImageDrag::tqencodedData (mimeType); } } // public static bool kpSelectionDrag::canDecode (const TQMimeSource *e) { #if DEBUG_KP_SELECTION_DRAG kdDebug () << "kpSelectionDrag::canDecode()" << endl; #endif if (!e) return false; return (e->provides (kpSelectionDrag::selectionMimeType) || TQImageDrag::canDecode (e)); } // public static bool kpSelectionDrag::decode (const TQMimeSource *e, TQImage &img) { #if DEBUG_KP_SELECTION_DRAG kdDebug () << "kpSelectionDrag::decode(TQImage)" << endl; #endif if (!e) return false; return (TQImageDrag::canDecode (e) && // prevents X errors, jumps based on unitialised values... TQImageDrag::decode (e, img/*ref*/)); } // public static bool kpSelectionDrag::decode (const TQMimeSource *e, kpSelection &sel, const kpPixmapFX::WarnAboutLossInfo &wali) { #if DEBUG_KP_SELECTION_DRAG kdDebug () << "kpSelectionDrag::decode(kpSelection)" << endl; #endif if (!e) return false; if (e->provides (kpSelectionDrag::selectionMimeType)) { #if DEBUG_KP_SELECTION_DRAG kdDebug () << "\tmimeSource provides selection - just return it in TQByteArray" << endl; #endif TQByteArray data = e->tqencodedData (kpSelectionDrag::selectionMimeType); TQDataStream stream (data, IO_ReadOnly); // (no need for wali as kpSelection's by definition only support TQPixmap's) stream >> sel; } else { #if DEBUG_KP_SELECTION_DRAG kdDebug () << "\tmimeSource doesn't provide selection - try image" << endl; #endif TQImage image; if (kpSelectionDrag::decode (e, image/*ref*/)) { #if DEBUG_KP_SELECTION_DRAG kdDebug () << "\tok w=" << image.width () << " h=" << image.height () << endl; #endif sel = kpSelection (kpSelection::Rectangle, TQRect (0, 0, image.width (), image.height ()), kpPixmapFX::convertToPixmapAsLosslessAsPossible (image, wali)); } else { #if DEBUG_KP_SELECTION_DRAG kdDebug () << "kpSelectionDrag::decode(kpSelection) mimeSource had no sel " "and could not decode to image" << endl; #endif return false; } } return true; } #include <kpselectiondrag.moc>