File indexing completed on 2024-12-15 04:03:26

 
 /*
    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_TOOL_TEXT 0
 
 
 #include "tools/selection/text/kpToolText.h"
 #include "kpToolTextPrivate.h"
 #include "kpLogCategories.h"
 #include "commands/kpCommandHistory.h"
 #include "document/kpDocument.h"
 #include "layers/selections/text/kpTextSelection.h"
 #include "commands/tools/selection/text/kpToolTextBackspaceCommand.h"
 #include "commands/tools/selection/text/kpToolTextChangeStyleCommand.h"
 #include "commands/tools/selection/kpToolSelectionCreateCommand.h"
 #include "environments/tools/selection/kpToolSelectionEnvironment.h"
 #include "commands/tools/selection/text/kpToolTextDeleteCommand.h"
 #include "commands/tools/selection/text/kpToolTextEnterCommand.h"
 #include "commands/tools/selection/text/kpToolTextInsertCommand.h"
 #include "widgets/toolbars/options/kpToolWidgetOpaqueOrTransparent.h"
 #include "views/kpView.h"
 #include "views/manager/kpViewManager.h"
 
 #include <QList>
 
 //---------------------------------------------------------------------
 
 // protected
 void kpToolText::handleBackspaceKeyPress (QKeyEvent *e,
     const QList <QString> &textLines, int cursorRow, int cursorCol)
 {
 #if DEBUG_KP_TOOL_TEXT
     qCDebug(kpLogTools) << "\tbackspace pressed";
 #endif
 
     if (!textLines.isEmpty ())
     {
         if ((e->modifiers () & Qt::ControlModifier) == 0)
         {
             if (!d->backspaceCommand) {
                 addNewBackspaceCommand (&d->backspaceCommand);
             }
     
             d->backspaceCommand->addBackspace ();
         }
         else
         {
             if (!d->backspaceWordCommand) {
                 addNewBackspaceCommand (&d->backspaceWordCommand);
             }
     
             const int numMoves = MoveCursorToWordStart (textLines,
                 &cursorRow, &cursorCol);
     
             viewManager ()->setQueueUpdates ();
             {
                 for (int i = 0; i < numMoves; i++) {
                     d->backspaceWordCommand->addBackspace ();
                 }
             }
             viewManager ()->restoreQueueUpdates ();
     
             Q_ASSERT (cursorRow == viewManager ()->textCursorRow ());
             Q_ASSERT (cursorCol == viewManager ()->textCursorCol ());
         }
     }
 
     e->accept ();
 }
 
 //---------------------------------------------------------------------
 
 // protected
 void kpToolText::handleDeleteKeyPress (QKeyEvent *e,
     const QList <QString> & textLines, int cursorRow, int cursorCol)
 {
 #if DEBUG_KP_TOOL_TEXT
     qCDebug(kpLogTools) << "\tdelete pressed";
 #endif
 
     if (!textLines.isEmpty ())
     {
         if ((e->modifiers () & Qt::ControlModifier) == 0)
         {
             if (!d->deleteCommand) {
                 addNewDeleteCommand (&d->deleteCommand);
             }
     
             d->deleteCommand->addDelete ();
         }
         else
         {
             if (!d->deleteWordCommand) {
                 addNewDeleteCommand (&d->deleteWordCommand);
             }
     
             // We don't want to know the cursor pos of the next word start
             // as delete should keep cursor in same pos.
             int cursorRowThrowAway = cursorRow,
                 cursorColThrowAway = cursorCol;
             const int numMoves = MoveCursorToNextWordStart (textLines,
                 &cursorRowThrowAway, &cursorColThrowAway);
     
             viewManager ()->setQueueUpdates ();
             {
                 for (int i = 0; i < numMoves; i++) {
                     d->deleteWordCommand->addDelete ();
                 }
             }
             viewManager ()->restoreQueueUpdates ();
     
             // Assert unchanged as delete should keep cursor in same pos.
             Q_ASSERT (cursorRow == viewManager ()->textCursorRow ());
             Q_ASSERT (cursorCol == viewManager ()->textCursorCol ());
         }
     }
 
     e->accept ();
 }
 
 //---------------------------------------------------------------------
 
 // protected
 void kpToolText::handleEnterKeyPress (QKeyEvent *e,
     const QList <QString> & /*textLines*/, int /*cursorRow*/, int /*cursorCol*/)
 {
 #if DEBUG_KP_TOOL_TEXT
     qCDebug(kpLogTools) << "\tenter pressed";
 #endif
 
     // It's OK for <textLines> to be empty.
     
     if (!d->enterCommand) {
         addNewEnterCommand (&d->enterCommand);
     }
 
     d->enterCommand->addEnter ();
 
     e->accept ();
 }
 
 //---------------------------------------------------------------------
 
 // protected
 void kpToolText::handleTextTyped (QKeyEvent *e,
     const QList <QString> & /*textLines*/, int /*cursorRow*/, int /*cursorCol*/)
 {
 #if DEBUG_KP_TOOL_TEXT
     qCDebug(kpLogTools) << "\ttext=" << e->text();
 #endif
     QString usableText;
     for (int i = 0; i < e->text ().length (); i++)
     {
         if ( e->text().at(i).category() != QChar::Other_Control )
             usableText += e->text().at(i);
     }
 #if DEBUG_KP_TOOL_TEXT
     qCDebug(kpLogTools) << "\tusableText=" << usableText;
 #endif
 
     if (usableText.isEmpty ())
     {
         // Don't end the current shape nor accept the event -- the event
         // wasn't for us.
         return;
     }
 
     // --- It's OK for <textLines> to be empty. ---
 
     if (!d->insertCommand) {
         addNewInsertCommand (&d->insertCommand);
     }
 
     d->insertCommand->addText (usableText);
 
     e->accept ();
 }