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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commit47d455dd55be855e4cc691c32f687f723d9247ee (patch)
tree52e236aaa2576bdb3840ebede26619692fed6d7d /kolourpaint/kpviewmanager.cpp
downloadtdegraphics-47d455dd55be855e4cc691c32f687f723d9247ee.tar.gz
tdegraphics-47d455dd55be855e4cc691c32f687f723d9247ee.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdegraphics@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
Diffstat (limited to 'kolourpaint/kpviewmanager.cpp')
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diff --git a/kolourpaint/kpviewmanager.cpp b/kolourpaint/kpviewmanager.cpp
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+
+/*
+ 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_VIEW_MANAGER 0
+
+
+#include <kpviewmanager.h>
+
+#include <qapplication.h>
+#include <qtimer.h>
+
+#include <kdebug.h>
+
+#include <kpdefs.h>
+#include <kpdocument.h>
+#include <kpmainwindow.h>
+#include <kpselection.h>
+#include <kptemppixmap.h>
+#include <kptool.h>
+#include <kpview.h>
+
+
+kpViewManager::kpViewManager (kpMainWindow *mainWindow)
+ : m_textCursorBlinkTimer (0),
+ m_textCursorRow (-1),
+ m_textCursorCol (-1),
+ m_textCursorBlinkState (true),
+ m_mainWindow (mainWindow),
+ m_tempPixmap (0),
+ m_viewUnderCursor (0),
+ m_selectionBorderVisible (false),
+ m_selectionBorderFinished (false)
+{
+ m_queueUpdatesCounter = m_fastUpdatesCounter = 0;
+}
+
+// private
+kpDocument *kpViewManager::document () const
+{
+ return m_mainWindow ? m_mainWindow->document () : 0;
+}
+
+kpViewManager::~kpViewManager ()
+{
+ unregisterAllViews ();
+
+ delete m_tempPixmap; m_tempPixmap = 0;
+}
+
+
+void kpViewManager::registerView (kpView *view)
+{
+#if DEBUG_KP_VIEW_MANAGER && 1
+ kdDebug () << "kpViewManager::registerView (" << view << ")" << endl;
+#endif
+ if (view && m_views.findRef (view) < 0)
+ {
+ #if DEBUG_KP_VIEW_MANAGER && 1
+ kdDebug () << "\tadded view" << endl;
+ #endif
+ view->setCursor (m_cursor);
+ m_views.append (view);
+ }
+ else
+ {
+ #if DEBUG_KP_VIEW_MANAGER && 1
+ kdDebug () << "\tignored register view attempt" << endl;
+ #endif
+ }
+}
+
+void kpViewManager::unregisterView (kpView *view)
+{
+ if (view)
+ {
+ if (view == m_viewUnderCursor)
+ m_viewUnderCursor = 0;
+
+ view->unsetCursor ();
+ m_views.removeRef (view);
+ }
+}
+
+void kpViewManager::unregisterAllViews ()
+{
+ // no autoDelete
+ m_views.clear ();
+}
+
+
+// public
+const kpTempPixmap *kpViewManager::tempPixmap () const
+{
+ return m_tempPixmap;
+}
+
+// public
+void kpViewManager::setTempPixmap (const kpTempPixmap &tempPixmap)
+{
+#if DEBUG_KP_VIEW_MANAGER
+ kdDebug () << "kpViewManager::setTempPixmap(isBrush="
+ << tempPixmap.isBrush ()
+ << ",topLeft=" << tempPixmap.topLeft ()
+ << ",pixmap.rect=" << tempPixmap.pixmap ().rect ()
+ << ")" << endl;
+#endif
+
+ QRect oldRect;
+
+ if (m_tempPixmap)
+ {
+ oldRect = m_tempPixmap->rect ();
+ delete m_tempPixmap;
+ m_tempPixmap = 0;
+ }
+
+ m_tempPixmap = new kpTempPixmap (tempPixmap);
+
+
+ setQueueUpdates ();
+
+ if (oldRect.isValid ())
+ updateViews (oldRect);
+ updateViews (m_tempPixmap->rect ());
+
+ restoreQueueUpdates ();
+}
+
+// public
+void kpViewManager::invalidateTempPixmap ()
+{
+ if (!m_tempPixmap)
+ return;
+
+ QRect oldRect = m_tempPixmap->rect ();
+
+ delete m_tempPixmap;
+ m_tempPixmap = 0;
+
+ updateViews (oldRect);
+}
+
+
+// public
+bool kpViewManager::selectionBorderVisible () const
+{
+ return m_selectionBorderVisible;
+}
+
+// public
+void kpViewManager::setSelectionBorderVisible (bool yes)
+{
+ if (m_selectionBorderVisible == yes)
+ return;
+
+ m_selectionBorderVisible = yes;
+
+ if (document () && document ()->selection ())
+ updateViews (document ()->selection ()->boundingRect ());
+}
+
+
+// public
+bool kpViewManager::selectionBorderFinished () const
+{
+ return m_selectionBorderFinished;
+}
+
+// public
+void kpViewManager::setSelectionBorderFinished (bool yes)
+{
+ if (m_selectionBorderFinished == yes)
+ return;
+
+ m_selectionBorderFinished = yes;
+
+ if (document () && document ()->selection ())
+ updateViews (document ()->selection ()->boundingRect ());
+}
+
+
+bool kpViewManager::textCursorEnabled () const
+{
+ return (bool) m_textCursorBlinkTimer;
+}
+
+void kpViewManager::setTextCursorEnabled (bool yes)
+{
+#if DEBUG_KP_VIEW_MANAGER && 1
+ kdDebug () << "kpViewManager::setTextCursorEnabled(" << yes << ")" << endl;
+#endif
+
+ if (yes == textCursorEnabled ())
+ return;
+
+ delete m_textCursorBlinkTimer;
+ m_textCursorBlinkTimer = 0;
+
+ setFastUpdates ();
+ setQueueUpdates ();
+
+ m_textCursorBlinkState = true;
+
+ if (yes)
+ {
+ m_textCursorBlinkTimer = new QTimer (this);
+ connect (m_textCursorBlinkTimer, SIGNAL (timeout ()),
+ this, SLOT (slotTextCursorBlink ()));
+ slotTextCursorBlink ();
+ }
+ // TODO: What if !yes - shouldn't it clear the cursor?
+
+ restoreQueueUpdates ();
+ restoreFastUpdates ();
+}
+
+
+int kpViewManager::textCursorRow () const
+{
+ bool handledErrors = false;
+ if (m_mainWindow)
+ {
+ kpDocument *doc = m_mainWindow->document ();
+ if (doc)
+ {
+ kpSelection *sel = doc->selection ();
+ if (sel && sel->isText ())
+ {
+ if (m_textCursorRow >= (int) sel->textLines ().size ())
+ {
+ #if DEBUG_KP_VIEW_MANAGER && 1
+ kdDebug () << "kpViewManager::textCursorRow() row="
+ << m_textCursorRow
+ << endl;
+ #endif
+ (const_cast <kpViewManager *> (this))->m_textCursorRow =
+ sel->textLines ().size () - 1;
+ }
+
+ handledErrors = true;
+ }
+ }
+ }
+
+ if (!handledErrors)
+ {
+ #if DEBUG_KP_VIEW_MANAGER && 1
+ kdDebug () << "kpViewManager::textCursorRow() no mw, doc or text sel" << endl;
+ #endif
+ (const_cast <kpViewManager *> (this))->m_textCursorRow = -1;
+ }
+
+ return m_textCursorRow;
+}
+
+int kpViewManager::textCursorCol () const
+{
+ int row = textCursorRow ();
+ if (row < 0)
+ return -1;
+
+ bool handledErrors = false;
+ if (m_mainWindow)
+ {
+ kpDocument *doc = m_mainWindow->document ();
+ if (doc)
+ {
+ kpSelection *sel = doc->selection ();
+ if (sel && sel->isText ())
+ {
+ if (m_textCursorCol > (int) sel->textLines () [row].length ())
+ {
+ #if DEBUG_KP_VIEW_MANAGER && 1
+ kdDebug () << "kpViewManager::textCursorRow() col="
+ << m_textCursorCol
+ << endl;
+ #endif
+ (const_cast <kpViewManager *> (this))->m_textCursorCol =
+ sel->textLines () [row].length ();
+ }
+
+ handledErrors = true;
+ }
+ }
+ }
+
+ if (!handledErrors)
+ {
+ #if DEBUG_KP_VIEW_MANAGER && 1
+ kdDebug () << "kpViewManager::textCursorCol() no mw, doc or text sel" << endl;
+ #endif
+ (const_cast <kpViewManager *> (this))->m_textCursorCol = -1;
+ }
+
+ return m_textCursorCol;
+}
+
+void kpViewManager::setTextCursorPosition (int row, int col, bool isUpdateMicroFocusHint)
+{
+ if (row == m_textCursorRow && col == m_textCursorCol)
+ return;
+
+ setFastUpdates ();
+ setQueueUpdates ();
+
+ m_textCursorBlinkState = false;
+ updateTextCursor ();
+
+ m_textCursorRow = row;
+ m_textCursorCol = col;
+
+ m_textCursorBlinkState = true;
+ updateTextCursor ();
+
+ restoreQueueUpdates ();
+ restoreFastUpdates ();
+
+ if (isUpdateMicroFocusHint)
+ {
+ kpDocument *doc = m_mainWindow->document ();
+ if (!doc)
+ return;
+
+ kpSelection *sel = doc->selection ();
+ if (!sel || !sel->isText ())
+ return;
+
+ if (m_viewUnderCursor)
+ {
+ // TODO: Fix code duplication: kpViewManager::{setTextCursorPosition,updateTextCursor}() & kpView::paintEventDrawSelection()
+ QPoint topLeft = sel->pointForTextRowCol (m_textCursorRow, m_textCursorCol);
+ if (topLeft != KP_INVALID_POINT)
+ {
+ // TODO: I think you need to consider zooming e.g. try editing
+ // text at 800% or with focus set to the thumbnail.
+ // kpSelection/kpDocument works fully in unzoomed
+ // coordinates unlike the view (which is zoomed and can
+ // change size).
+ //
+ // To fix it here, I think you should call
+ // m_viewUnderCursor->transformDocToView(QRect). However,
+ // the rest of the InputMethod support still needs to
+ // audited for this.
+ //
+ // [Bug #27]
+ m_viewUnderCursor->updateMicroFocusHint(QRect (topLeft.x (), topLeft.y (), 1, sel->textStyle ().fontMetrics ().height ()));
+ }
+ }
+ }
+}
+
+
+bool kpViewManager::textCursorBlinkState () const
+{
+ return m_textCursorBlinkState;
+}
+
+void kpViewManager::setTextCursorBlinkState (bool on)
+{
+ if (on == m_textCursorBlinkState)
+ return;
+
+ m_textCursorBlinkState = on;
+
+ updateTextCursor ();
+}
+
+
+// protected
+void kpViewManager::updateTextCursor ()
+{
+#if DEBUG_KP_VIEW_MANAGER && 0
+ kdDebug () << "kpViewManager::updateTextCursor()" << endl;
+#endif
+
+ if (!m_mainWindow)
+ return;
+
+ kpDocument *doc = m_mainWindow->document ();
+ if (!doc)
+ return;
+
+ kpSelection *sel = doc->selection ();
+ if (!sel || !sel->isText ())
+ return;
+
+ // TODO: Fix code duplication: kpViewManager::{setTextCursorPosition,updateTextCursor}() & kpView::paintEventDrawSelection()
+ QPoint topLeft = sel->pointForTextRowCol (m_textCursorRow, m_textCursorCol);
+ if (topLeft != KP_INVALID_POINT)
+ {
+ setFastUpdates ();
+ updateViews (QRect (topLeft.x (), topLeft.y (), 1, sel->textStyle ().fontMetrics ().height ()));
+ restoreFastUpdates ();
+ }
+}
+
+// protected slot
+void kpViewManager::slotTextCursorBlink ()
+{
+#if DEBUG_KP_VIEW_MANAGER && 0
+ kdDebug () << "kpViewManager::slotTextCursorBlink() cursorBlinkState="
+ << m_textCursorBlinkState << endl;
+#endif
+
+ if (m_textCursorBlinkTimer)
+ {
+ m_textCursorBlinkTimer->start (QApplication::cursorFlashTime () / 2,
+ true/*single shot*/);
+ }
+
+ updateTextCursor ();
+ m_textCursorBlinkState = !m_textCursorBlinkState;
+}
+
+
+void kpViewManager::setCursor (const QCursor &cursor)
+{
+ for (QPtrList <kpView>::const_iterator it = m_views.begin ();
+ it != m_views.end ();
+ it++)
+ {
+ (*it)->setCursor (cursor);
+ }
+
+ m_cursor = cursor;
+}
+
+void kpViewManager::unsetCursor ()
+{
+ for (QPtrList <kpView>::const_iterator it = m_views.begin ();
+ it != m_views.end ();
+ it++)
+ {
+ (*it)->unsetCursor ();
+ }
+
+ m_cursor = QCursor ();
+}
+
+
+kpView *kpViewManager::viewUnderCursor (bool usingQt) const
+{
+ if (!usingQt)
+ {
+ kpViewManager *nonConstThis = const_cast <kpViewManager *> (this);
+
+ if (m_viewUnderCursor && nonConstThis->m_views.findRef (m_viewUnderCursor) < 0)
+ {
+ kdError () << "kpViewManager::viewUnderCursor(): invalid view" << endl;
+ nonConstThis->m_viewUnderCursor = 0;
+ }
+
+
+ return m_viewUnderCursor;
+ }
+ else
+ {
+ for (QPtrList <kpView>::const_iterator it = m_views.begin ();
+ it != m_views.end ();
+ it++)
+ {
+ if ((*it)->hasMouse ())
+ return (*it);
+ }
+
+ return 0;
+ }
+}
+
+void kpViewManager::setViewUnderCursor (kpView *view)
+{
+#if DEBUG_KP_VIEW_MANAGER && 1
+ kdDebug () << "kpViewManager::setViewUnderCursor ("
+ << (view ? view->name () : "(none)") << ")"
+ << " old=" << (m_viewUnderCursor ? m_viewUnderCursor->name () : "(none)")
+ << endl;
+#endif
+ if (view == m_viewUnderCursor)
+ return;
+
+ m_viewUnderCursor = view;
+
+ if (!m_viewUnderCursor)
+ {
+ // Hide the brush if the mouse cursor just left the view
+ if (m_tempPixmap && m_tempPixmap->isBrush ())
+ {
+ #if DEBUG_KP_VIEW_MANAGER && 1
+ kdDebug () << "\thiding brush pixmap since cursor left view" << endl;
+ #endif
+ updateViews (m_tempPixmap->rect ());
+ }
+ }
+ else
+ {
+ if (m_mainWindow && m_mainWindow->tool ())
+ {
+ #if DEBUG_KP_VIEW_MANAGER && 1
+ kdDebug () << "\tnotify tool that something changed below cursor" << endl;
+ #endif
+ m_mainWindow->tool ()->somethingBelowTheCursorChanged ();
+ }
+ }
+}
+
+
+// public
+kpView *kpViewManager::activeView () const
+{
+ for (QPtrList <kpView>::const_iterator it = m_views.begin ();
+ it != m_views.end ();
+ it++)
+ {
+ if ((*it)->isActiveWindow ())
+ return (*it);
+ }
+
+ return 0;
+}
+
+
+// public
+bool kpViewManager::queueUpdates () const
+{
+ return (m_queueUpdatesCounter > 0);
+}
+
+// public
+void kpViewManager::setQueueUpdates ()
+{
+ m_queueUpdatesCounter++;
+#if DEBUG_KP_VIEW_MANAGER && 1
+ kdDebug () << "kpViewManager::setQueueUpdates() counter="
+ << m_queueUpdatesCounter << endl;
+#endif
+}
+
+// public
+void kpViewManager::restoreQueueUpdates ()
+{
+ m_queueUpdatesCounter--;
+#if DEBUG_KP_VIEW_MANAGER && 1
+ kdDebug () << "kpViewManager::restoreQueueUpdates() counter="
+ << m_queueUpdatesCounter << endl;
+#endif
+ if (m_queueUpdatesCounter < 0)
+ {
+ kdError () << "kpViewManager::restoreQueueUpdates() counter="
+ << m_queueUpdatesCounter;
+ }
+
+ if (m_queueUpdatesCounter <= 0)
+ {
+ for (QPtrList <kpView>::const_iterator it = m_views.begin ();
+ it != m_views.end ();
+ it++)
+ {
+ (*it)->updateQueuedArea ();
+ }
+ }
+}
+
+
+// public
+bool kpViewManager::fastUpdates () const
+{
+ return (m_fastUpdatesCounter > 0);
+}
+
+// public
+void kpViewManager::setFastUpdates ()
+{
+ m_fastUpdatesCounter++;
+#if DEBUG_KP_VIEW_MANAGER && 0
+ kdDebug () << "kpViewManager::setFastUpdates() counter="
+ << m_fastUpdatesCounter << endl;
+#endif
+}
+
+// public
+void kpViewManager::restoreFastUpdates ()
+{
+ m_fastUpdatesCounter--;
+#if DEBUG_KP_VIEW_MANAGER && 0
+ kdDebug () << "kpViewManager::restoreFastUpdates() counter="
+ << m_fastUpdatesCounter << endl;
+#endif
+ if (m_fastUpdatesCounter < 0)
+ {
+ kdError () << "kpViewManager::restoreFastUpdates() counter="
+ << m_fastUpdatesCounter;
+ }
+}
+
+
+void kpViewManager::updateView (kpView *v)
+{
+ updateView (v, QRect (0, 0, v->width (), v->height ()));
+}
+
+void kpViewManager::updateView (kpView *v, const QRect &viewRect)
+{
+ if (!queueUpdates ())
+ {
+ if (fastUpdates ())
+ v->repaint (viewRect, false/*no erase*/);
+ else
+ v->update (viewRect);
+ }
+ else
+ v->addToQueuedArea (viewRect);
+}
+
+void kpViewManager::updateView (kpView *v, int x, int y, int w, int h)
+{
+ updateView (v, QRect (x, y, w, h));
+}
+
+void kpViewManager::updateView (kpView *v, const QRegion &viewRegion)
+{
+ if (!queueUpdates ())
+ {
+ if (fastUpdates ())
+ v->repaint (viewRegion, false/*no erase*/);
+ else
+ v->update (viewRegion.boundingRect ());
+ }
+ else
+ v->addToQueuedArea (viewRegion);
+}
+
+void kpViewManager::updateViewRectangleEdges (kpView *v, const QRect &viewRect)
+{
+ if (viewRect.height () <= 0 || viewRect.width () <= 0)
+ return;
+
+ // Top line
+ updateView (v, QRect (viewRect.x (), viewRect.y (),
+ viewRect.width (), 1));
+
+ if (viewRect.height () >= 2)
+ {
+ // Bottom line
+ updateView (v, QRect (viewRect.x (), viewRect.bottom (),
+ viewRect.width (), 1));
+
+ if (viewRect.height () > 2)
+ {
+ // Left line
+ updateView (v, QRect (viewRect.x (), viewRect.y () + 1,
+ 1, viewRect.height () - 2));
+
+ if (viewRect.width () >= 2)
+ {
+ // Right line
+ updateView (v, QRect (viewRect.right (), viewRect.y () + 1,
+ 1, viewRect.height () - 2));
+ }
+ }
+ }
+}
+
+
+void kpViewManager::updateViews ()
+{
+ kpDocument *doc = document ();
+ if (doc)
+ updateViews (QRect (0, 0, doc->width (), doc->height ()));
+}
+
+void kpViewManager::updateViews (const QRect &docRect)
+{
+#if DEBUG_KP_VIEW_MANAGER && 0
+ kdDebug () << "kpViewManager::updateViews (" << docRect << ")" << endl;
+#endif
+
+ for (QPtrList <kpView>::const_iterator it = m_views.begin ();
+ it != m_views.end ();
+ it++)
+ {
+ kpView *view = *it;
+
+ #if DEBUG_KP_VIEW_MANAGER && 0
+ kdDebug () << "\tupdating view " << view->name () << endl;
+ #endif
+ if (view->zoomLevelX () % 100 == 0 && view->zoomLevelY () % 100 == 0)
+ {
+ #if DEBUG_KP_VIEW_MANAGER && 0
+ kdDebug () << "\t\tviewRect=" << view->transformDocToView (docRect) << endl;
+ #endif
+ updateView (view, view->transformDocToView (docRect));
+ }
+ else
+ {
+ QRect viewRect = view->transformDocToView (docRect);
+
+ int diff = qRound (double (QMAX (view->zoomLevelX (), view->zoomLevelY ())) / 100.0) + 1;
+
+ QRect newRect = QRect (viewRect.x () - diff,
+ viewRect.y () - diff,
+ viewRect.width () + 2 * diff,
+ viewRect.height () + 2 * diff)
+ .intersect (QRect (0, 0, view->width (), view->height ()));
+
+ #if DEBUG_KP_VIEW_MANAGER && 0
+ kdDebug () << "\t\tviewRect (+compensate)=" << newRect << endl;
+ #endif
+ updateView (view, newRect);
+ }
+ }
+}
+
+void kpViewManager::updateViews (int x, int y, int w, int h)
+{
+ updateViews (QRect (x, y, w, h));
+}
+
+
+void kpViewManager::adjustViewsToEnvironment ()
+{
+#if DEBUG_KP_VIEW_MANAGER && 1
+ kdDebug () << "kpViewManager::adjustViewsToEnvironment()"
+ << " numViews=" << m_views.count ()
+ << endl;
+#endif
+ for (QPtrList <kpView>::const_iterator it = m_views.begin ();
+ it != m_views.end ();
+ it++)
+ {
+ kpView *view = *it;
+
+ #if DEBUG_KP_VIEW_MANAGER && 1
+ kdDebug () << "\tview: " << view->name ()
+ << endl;
+ #endif
+ view->adjustToEnvironment ();
+ }
+}
+
+#include <kpviewmanager.moc>
+