kolourpaint/views/kpThumbnailView.cpp

   1
   2 /*
   3    Copyright (c) 2003-2007 Clarence Dang <dang@kde.org>
   4    All rights reserved.
   5
   6    Redistribution and use in source and binary forms, with or without
   7    modification, are permitted provided that the following conditions
   8    are met:
   9
  10    1. Redistributions of source code must retain the above copyright
  11       notice, this list of conditions and the following disclaimer.
  12    2. Redistributions in binary form must reproduce the above copyright
  13       notice, this list of conditions and the following disclaimer in the
  14       documentation and/or other materials provided with the distribution.
  15
  16    THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17    IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18    OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19    IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21    NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25    THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26 */
  27
  28
  29 #define DEBUG_KP_THUMBNAIL_VIEW 0
  30
  31
  32 #include <kpThumbnailView.h>
  33
  34 #include <kdebug.h>
  35
  36
  37 kpThumbnailView::kpThumbnailView (kpDocument *document,
  38         kpToolToolBar *toolToolBar,
  39         kpViewManager *viewManager,
  40         kpView *buddyView,
  41         kpViewScrollableContainer *scrollableContainer,
  42         QWidget *parent)
  43
  44     : kpView (document, toolToolBar, viewManager,
  45               buddyView,
  46               scrollableContainer,
  47               parent)
  48 {
  49 }
  50
  51 kpThumbnailView::~kpThumbnailView ()
  52 {
  53 }
  54
  55
  56 // protected
  57 void kpThumbnailView::setMaskToCoverDocument ()
  58 {
  59 #if DEBUG_KP_THUMBNAIL_VIEW
  60     kDebug () << "kpThumbnailView::setMaskToCoverDocument()"
  61                << " origin=" << origin ()
  62                << " zoomedDoc: width=" << zoomedDocWidth ()
  63                << " height=" << zoomedDocHeight ()
  64                << endl;
  65 #endif
  66
  67     setMask (QRegion (QRect (origin ().x (), origin ().y (),
  68                       zoomedDocWidth (), zoomedDocHeight ())));
  69 }
  70
  71
  72 // protected virtual [base kpView]
  73 void kpThumbnailView::resizeEvent (QResizeEvent *e)
  74 {
  75 #if DEBUG_KP_THUMBNAIL_VIEW
  76     kDebug () << "kpThumbnailView(" << name () << ")::resizeEvent()"
  77                << endl;
  78 #endif
  79
  80     // For QResizeEvent's, Qt already throws an entire widget repaint into
  81     // the event loop.  So eat useless update() calls that can only slow
  82     // things down.
  83     // TODO: this doesn't seem to work.
  84     //       Later: In Qt4, setUpdatesEnabled(true) calls update().
  85     const bool oldIsUpdatesEnabled = updatesEnabled ();
  86     setUpdatesEnabled (false);
  87
  88     {
  89         kpView::resizeEvent (e);
  90
  91         adjustToEnvironment ();
  92     }
  93
  94     setUpdatesEnabled (oldIsUpdatesEnabled);
  95 }
  96
  97
  98 #include <kpThumbnailView.moc>
  99