QTfrontend/ui/widget/HistoryLineEdit.cpp
author sheepluva
Mon, 05 Aug 2019 00:20:45 +0200
changeset 15295 f382ec6dba11
parent 11046 47a8c19ecb60
permissions -rw-r--r--
In hindsight my emscripten-ifdef (70d416a8f63f) is nonsense. As fpcrtl_glShaderSource() would not be defined and lead to compiling issues. So either it's 3 ifdefs (in pas2cRedo, pas2cSystem and misc.c), in order to toggle between fpcrtl_ and the native function, or alternatively have no ifdef for it at all. I'm going with none at all, which means emscripten will compile with the original (const) function prototype, being wrapped by the fpcrtl_ function, same as non-emscripten builds.
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/*
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 * Hedgewars, a free turn based strategy game
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 * Copyright (c) 2006-2007 Igor Ulyanov <iulyanov@gmail.com>
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 * Copyright (c) 2004-2015 Andrey Korotaev <unC0Rr@gmail.com>
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; version 2 of the License
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 */
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/**
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 * @file
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 * @brief HistoryLineEdit class implementation
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 */
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#include <QStringList>
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#include "HistoryLineEdit.h"
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HistoryLineEdit::HistoryLineEdit(QWidget * parent, int maxHistorySize)
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    : QLineEdit(parent)
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{
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    m_curHistEntryIdx = 0;
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    m_maxHistorySize = maxHistorySize;
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    m_history = new QStringList();
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}
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HistoryLineEdit::~HistoryLineEdit()
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{
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    delete m_history;
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}
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void HistoryLineEdit::rememberCurrentText()
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{
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    QString newEntry = text();
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    // don't store whitespace-only/empty text
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    if (newEntry.trimmed().isEmpty())
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        return;
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    m_history->removeOne(newEntry); // no duplicates please
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    m_history->append(newEntry);
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    // do not keep more entries than allowed
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    if (m_history->size() > m_maxHistorySize)
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        m_history->removeFirst();
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    // we're looking at the latest entry
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    m_curHistEntryIdx = m_history->size() - 1;
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}
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void HistoryLineEdit::clear()
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{
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    QLineEdit::clear();
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    m_curHistEntryIdx = m_history->size();
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}
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void HistoryLineEdit::reset()
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{
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    // forget history
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    m_history->clear();
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    m_curHistEntryIdx = 0;
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}
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void HistoryLineEdit::navigateHistory(bool isGoingUp)
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{
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    // save possible changes to new entry
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    if ((m_curHistEntryIdx >= m_history->size() ||
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            (text() != m_history->at(m_curHistEntryIdx))))
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    {
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        rememberCurrentText();
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    }
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    if (isGoingUp)
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        m_curHistEntryIdx--;
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    else
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        m_curHistEntryIdx++;
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    // if Idx higher than valid range
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    if (m_curHistEntryIdx >= m_history->size())
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    {
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        QLineEdit::clear();
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        m_curHistEntryIdx = m_history->size();
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    }
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    // if Idx in valid range
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    else if (m_curHistEntryIdx >= 0)
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    {
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        setText(m_history->at(m_curHistEntryIdx));
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    }
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    // if Idx below 0
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    else
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        m_curHistEntryIdx = 0;
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}
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void HistoryLineEdit::keyPressEvent(QKeyEvent * event)
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{
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    int key = event->key(); // retrieve pressed key
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    // navigate history with arrow keys
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    if (event->modifiers() == Qt::NoModifier)
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sheepluva
parents:
diff changeset
   117
        switch (key)
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   118
        {
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   119
            case Qt::Key_Escape:
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   120
                clear();
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   121
                event->accept();
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   122
                break;
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   123
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   124
            case Qt::Key_Up:
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   125
                navigateHistory(true);
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   126
                event->accept();
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   127
                break;
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   128
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   129
            case Qt::Key_Down:
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   130
                navigateHistory(false);
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   131
                event->accept();
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   132
                break;
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   133
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   134
            default:
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   135
                QLineEdit::keyPressEvent(event);
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   136
                break;
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   137
        }
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   138
    // otherwise forward keys to parent
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   139
    else
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   140
        QLineEdit::keyPressEvent(event);
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   141
}
9fd5b70acb1a give the room name edit box a history of previous room. however I hate that box from the bottom of my heart, it shall dieeeee... later...
sheepluva
parents:
diff changeset
   142