File indexing completed on 2024-05-12 04:21:29

 
 /*
    Copyright (c) 2003-2007 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_VIEW_MANAGER 0
 
 
 #include "views/manager/kpViewManager.h"
 #include "kpViewManagerPrivate.h"
 
 
 #include "kpLogCategories.h"
 
 #include "kpDefs.h"
 #include "document/kpDocument.h"
 #include "mainWindow/kpMainWindow.h"
 #include "layers/tempImage/kpTempImage.h"
 #include "layers/selections/text/kpTextSelection.h"
 #include "tools/kpTool.h"
 #include "views/kpView.h"
 
 //---------------------------------------------------------------------
 
 kpViewManager::kpViewManager (kpMainWindow *mainWindow)
     : d (new kpViewManagerPrivate ())
 {
     Q_ASSERT (mainWindow);
 
     d->mainWindow = mainWindow;
 
     // d->views
     d->viewUnderCursor = nullptr;
 
     // d->cursor
 
     d->tempImage = nullptr;
 
     d->selectionBorderVisible = false;
     d->selectionBorderFinished = false;
 
 
     d->textCursorBlinkTimer = nullptr;
 
     d->textCursorRow = -1;
     d->textCursorCol = -1;
 
     d->textCursorBlinkState = true;
 
 
     d->queueUpdatesCounter = d->fastUpdatesCounter = 0;
 
     d->inputMethodEnabled = false;
 }
 
 //---------------------------------------------------------------------
 
 kpViewManager::~kpViewManager ()
 {
     unregisterAllViews ();
 
     delete d->tempImage;
     delete d;
 }
 
 //---------------------------------------------------------------------
 
 // private
 kpDocument *kpViewManager::document () const
 {
     return d->mainWindow->document ();
 }
 
 //---------------------------------------------------------------------
 
 // public
 void kpViewManager::registerView (kpView *view)
 {
 #if DEBUG_KP_VIEW_MANAGER && 1
     qCDebug(kpLogViews) << "kpViewManager::registerView (" << view << ")";
 #endif
     Q_ASSERT (view);
     Q_ASSERT (!d->views.contains (view));
 
 #if DEBUG_KP_VIEW_MANAGER && 1
     qCDebug(kpLogViews) << "\tadded view";
 #endif
     view->setCursor (d->cursor);
     d->views.append (view);
 }
 
 //---------------------------------------------------------------------
 
 // public
 void kpViewManager::unregisterView (kpView *view)
 {
     Q_ASSERT (view);
     Q_ASSERT (d->views.contains (view));
 
     if (view == d->viewUnderCursor) {
         d->viewUnderCursor = nullptr;
     }
 
     view->unsetCursor ();
     d->views.removeAll (view);
 }
 
 //---------------------------------------------------------------------
 
 // public
 void kpViewManager::unregisterAllViews ()
 {
     d->views.clear ();
 }
 
 //---------------------------------------------------------------------
 
 // public
 kpView *kpViewManager::viewUnderCursor (bool usingQt) const
 {
     if (!usingQt)
     {
         Q_ASSERT (!d->viewUnderCursor || d->views.contains (d->viewUnderCursor));
         return d->viewUnderCursor;
     }
 
 
     for (kpView *view : std::as_const(d->views))
       if ( view->underMouse() )
         return view;
 
     return nullptr;
 }
 
 //---------------------------------------------------------------------
 
 // public
 void kpViewManager::setViewUnderCursor (kpView *view)
 {
 #if DEBUG_KP_VIEW_MANAGER && 1
     qCDebug(kpLogViews) << "kpViewManager::setViewUnderCursor ("
                << (view ? view->objectName () : "(none)") << ")"
                << "  old=" << (d->viewUnderCursor ? d->viewUnderCursor->objectName () : "(none)");
 #endif
     if (view == d->viewUnderCursor) {
         return;
     }
 
     d->viewUnderCursor = view;
 
     if (d->viewUnderCursor) {
         d->viewUnderCursor->setAttribute (Qt::WA_InputMethodEnabled, d->inputMethodEnabled);
     }
 
     if (!d->viewUnderCursor)
     {
         // Hide the brush if the mouse cursor just left the view.
         if (d->tempImage && d->tempImage->isBrush ())
         {
         #if DEBUG_KP_VIEW_MANAGER && 1
             qCDebug(kpLogViews) << "\thiding brush pixmap since cursor left view";
         #endif
             updateViews (d->tempImage->rect ());
         }
     }
     else
     {
         if (d->mainWindow->tool ())
         {
         #if DEBUG_KP_VIEW_MANAGER && 1
             qCDebug(kpLogViews) << "\tnotify tool that something changed below cursor";
         #endif
             d->mainWindow->tool ()->somethingBelowTheCursorChanged ();
         }
     }
 }
 
 //---------------------------------------------------------------------
 
 // public
 bool kpViewManager::hasAViewWithFocus () const
 {
     for (kpView *view : std::as_const(d->views))
       if ( view->isActiveWindow() )
         return true;
 
     return false;
 }
 
 //---------------------------------------------------------------------
 
 // public
 void kpViewManager::setCursor(const QCursor &cursor)
 {
     for (kpView *view : std::as_const(d->views))
       view->setCursor(cursor);
 
     d->cursor = cursor;
 }
 
 //---------------------------------------------------------------------
 
 // public
 void kpViewManager::unsetCursor()
 {
     for (kpView *view : std::as_const(d->views))
       view->unsetCursor();
 
     d->cursor = QCursor();
 }
 
 //---------------------------------------------------------------------
 
 // public
 const kpTempImage *kpViewManager::tempImage () const
 {
     return d->tempImage;
 }
 
 //---------------------------------------------------------------------
 
 // public
 void kpViewManager::setTempImage (const kpTempImage &tempImage)
 {
 #if DEBUG_KP_VIEW_MANAGER
     qCDebug(kpLogViews) << "kpViewManager::setTempImage(isBrush="
                << tempImage.isBrush ()
                << ",topLeft=" << tempImage.topLeft ()
                << ",image.rect=" << tempImage.image ().rect ()
                << ")";
 #endif
 
     QRect oldRect;
 
     if (d->tempImage)
     {
         oldRect = d->tempImage->rect ();
         delete d->tempImage;
         d->tempImage = nullptr;
     }
 
     d->tempImage = new kpTempImage (tempImage);
 
     setQueueUpdates ();
     {
         if (oldRect.isValid ()) {
             updateViews (oldRect);
         }
         updateViews (d->tempImage->rect ());
     }
     restoreQueueUpdates ();
 }
 
 //---------------------------------------------------------------------
 
 // public
 void kpViewManager::invalidateTempImage ()
 {
     if (!d->tempImage) {
         return;
     }
 
     QRect oldRect = d->tempImage->rect ();
 
     delete d->tempImage;
     d->tempImage = nullptr;
 
     updateViews (oldRect);
 }
 
 //---------------------------------------------------------------------
 
 // public
 bool kpViewManager::selectionBorderVisible () const
 {
     return d->selectionBorderVisible;
 }
 
 //---------------------------------------------------------------------
 
 // public
 void kpViewManager::setSelectionBorderVisible (bool yes)
 {
     if (d->selectionBorderVisible == yes) {
         return;
     }
 
     d->selectionBorderVisible = yes;
 
     if (document ()->selection ()) {
         updateViews (document ()->selection ()->boundingRect ());
     }
 }
 
 //---------------------------------------------------------------------
 
 // public
 bool kpViewManager::selectionBorderFinished () const
 {
     return d->selectionBorderFinished;
 }
 
 //---------------------------------------------------------------------
 
 // public
 void kpViewManager::setSelectionBorderFinished (bool yes)
 {
     if (d->selectionBorderFinished == yes) {
         return;
     }
 
     d->selectionBorderFinished = yes;
 
     if (document ()->selection ()) {
         updateViews (document ()->selection ()->boundingRect ());
     }
 }
 
 //---------------------------------------------------------------------
 
 void kpViewManager::setInputMethodEnabled (bool inputMethodEnabled)
 {
     d->inputMethodEnabled = inputMethodEnabled;
     if (d->viewUnderCursor) {
         d->viewUnderCursor->setAttribute (Qt::WA_InputMethodEnabled, inputMethodEnabled);
     }
 }
 
 //---------------------------------------------------------------------
 
 #include "moc_kpViewManager.cpp"