Initial commit.
This commit is contained in:
G.K.MacGregor
450
document.cpp
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450
document.cpp
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/*
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* Copyright (C) 2020 Gavin MacGregor
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*
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* This file is part of QTeletextMaker.
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*
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* QTeletextMaker 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, either version 3 of the License, or
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* (at your option) any later version.
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*
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* QTeletextMaker 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 QTeletextMaker. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include <QFile>
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#include <QTextStream>
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#include <vector>
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#include "document.h"
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#include "page.h"
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TeletextDocument::TeletextDocument()
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{
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m_pageNumber = 0x198;
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m_description.clear();
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for (int i=0; i<6; i++)
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m_fastTextLink[i] = 0x8ff;
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m_empty = true;
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m_subPages.push_back(new TeletextPage);
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m_currentSubPageIndex = 0;
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m_undoStack = new QUndoStack(this);
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m_cursorRow = 1;
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m_cursorColumn = 0;
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}
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TeletextDocument::~TeletextDocument()
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{
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for (auto &subPage : m_subPages)
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delete(subPage);
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}
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void TeletextDocument::loadDocument(QFile *inFile)
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{
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QByteArray inLine;
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bool firstSubPageFound = false;
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int cycleCommandsFound = 0;
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int mostRecentCycleValue = -1;
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TeletextPage::CycleTypeEnum mostRecentCycleType;
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TeletextPage* loadingPage = m_subPages[0];
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for (;;) {
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inLine = inFile->readLine(160).trimmed();
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if (inLine.isEmpty())
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break;
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if (inLine.startsWith("DE,"))
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m_description = QString(inLine.remove(0, 3));
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if (inLine.startsWith("PN,")) {
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bool pageNumberOk;
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int pageNumberRead = inLine.mid(3, 3).toInt(&pageNumberOk, 16);
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if ((!pageNumberOk) || pageNumberRead < 0x100 || pageNumberRead > 0x8ff)
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pageNumberRead = 0x199;
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// When second and subsequent PN commands are found, firstSubPageFound==true at this point
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// This assumes that PN is the first command of a new subpage...
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if (firstSubPageFound) {
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m_subPages.push_back(new TeletextPage);
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loadingPage = m_subPages.back();
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}
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m_pageNumber = pageNumberRead;
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firstSubPageFound = true;
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}
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/* if (lineType == "SC,") {
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bool subPageNumberOk;
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int subPageNumberRead = inLine.mid(3, 4).toInt(&subPageNumberOk, 16);
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if ((!subPageNumberOk) || subPageNumberRead > 0x3f7f)
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subPageNumberRead = 0;
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loadingPage->setSubPageNumber(subPageNumberRead);
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}*/
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if (inLine.startsWith("PS,")) {
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bool pageStatusOk;
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int pageStatusRead = inLine.mid(3, 4).toInt(&pageStatusOk, 16);
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if (pageStatusOk) {
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loadingPage->setControlBit(0, pageStatusRead & 0x4000);
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for (int i=1, pageStatusBit=0x0001; i<8; i++, pageStatusBit<<=1)
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loadingPage->setControlBit(i, pageStatusRead & pageStatusBit);
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loadingPage->setDefaultNOS(((pageStatusRead & 0x0200) >> 9) | ((pageStatusRead & 0x0100) >> 7) | ((pageStatusRead & 0x0080) >> 5));
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}
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}
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if (inLine.startsWith("CT,") && (inLine.endsWith(",C") || inLine.endsWith(",T"))) {
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bool cycleValueOk;
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int cycleValueRead = inLine.mid(3, inLine.size()-5).toInt(&cycleValueOk);
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if (cycleValueOk) {
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cycleCommandsFound++;
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// House-keep CT command values, in case it's the only one within multiple subpages
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mostRecentCycleValue = cycleValueRead;
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loadingPage->setCycleValue(cycleValueRead);
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mostRecentCycleType = inLine.endsWith("C") ? TeletextPage::CTcycles : TeletextPage::CTseconds;
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loadingPage->setCycleType(mostRecentCycleType);
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}
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}
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if (inLine.startsWith("FL,")) {
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bool fastTextLinkOk;
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int fastTextLinkRead;
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QString flLine = QString(inLine.remove(0, 3));
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if (flLine.count(',') == 5)
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for (int i=0; i<6; i++) {
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fastTextLinkRead = flLine.section(',', i, i).toInt(&fastTextLinkOk, 16);
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if (fastTextLinkOk)
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m_fastTextLink[i] = fastTextLinkRead == 0 ? 0x8ff : fastTextLinkRead;
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}
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}
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if (inLine.startsWith("OL,"))
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loadingPage->loadPagePacket(inLine);
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}
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// If there's more than one subpage but only one valid CT command was found, apply it to all subpages
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// I don't know if this is correct
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if (cycleCommandsFound == 1 && m_subPages.size()>1)
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for (auto &subPage : m_subPages) {
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subPage->setCycleValue(mostRecentCycleValue);
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subPage->setCycleType(mostRecentCycleType);
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}
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subPageSelected();
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}
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void TeletextDocument::saveDocument(QTextStream *outStream)
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{
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if (!m_description.isEmpty())
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*outStream << "DE," << m_description << endl;
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//TODO DS and SP commands
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int subPageNumber = m_subPages.size()>1;
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for (auto &subPage : m_subPages) {
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subPage->savePage(outStream, m_pageNumber, subPageNumber++);
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if (m_fastTextLink[0] != 0x8ff) {
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*outStream << "FL,";
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for (int i=0; i<6; i++) {
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*outStream << QString("%1").arg(m_fastTextLink[i], 3, 16, QChar('0'));
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if (i<5)
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*outStream << ',';
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}
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*outStream << endl;
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}
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}
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}
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void TeletextDocument::selectSubPageIndex(int newSubPageIndex, bool forceRefresh)
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{
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// forceRefresh overrides "beyond the last subpage" check, so inserting a subpage after the last one still shows - dangerous workaround?
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if (forceRefresh || (newSubPageIndex != m_currentSubPageIndex && newSubPageIndex < m_subPages.size()-1)) {
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emit aboutToChangeSubPage();
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m_currentSubPageIndex = newSubPageIndex;
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emit subPageSelected();
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return;
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}
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}
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void TeletextDocument::selectSubPageNext()
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{
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if (m_currentSubPageIndex < m_subPages.size()-1) {
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emit aboutToChangeSubPage();
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m_currentSubPageIndex++;
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emit subPageSelected();
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}
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}
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void TeletextDocument::selectSubPagePrevious()
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{
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if (m_currentSubPageIndex > 0) {
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emit aboutToChangeSubPage();
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m_currentSubPageIndex--;
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emit subPageSelected();
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}
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}
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void TeletextDocument::insertSubPage(int beforeSubPageIndex, bool copySubPage)
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{
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TeletextPage *insertedSubPage;
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if (copySubPage)
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insertedSubPage = new TeletextPage(*m_subPages.at(beforeSubPageIndex));
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else
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insertedSubPage = new TeletextPage;
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if (beforeSubPageIndex == m_subPages.size())
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m_subPages.push_back(insertedSubPage);
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else
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m_subPages.insert(m_subPages.begin()+beforeSubPageIndex, insertedSubPage);
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}
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void TeletextDocument::deleteSubPage(int subPageToDelete)
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{
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delete(m_subPages[subPageToDelete]);
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m_subPages.erase(m_subPages.begin()+subPageToDelete);
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}
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void TeletextDocument::setPageNumber(QString newPageNumberString)
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{
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// The LineEdit should check if a valid hex number was entered, but just in case...
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bool newPageNumberOk;
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int newPageNumberRead = newPageNumberString.toInt(&newPageNumberOk, 16);
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if (newPageNumberOk && newPageNumberRead >= 0x100 && newPageNumberRead <= 0x8fe)
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m_pageNumber = newPageNumberRead;
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}
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void TeletextDocument::setDescription(QString newDescription)
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{
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m_description = newDescription;
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}
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void TeletextDocument::setFastTextLink(int linkNumber, QString newPageNumberString)
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{
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// The LineEdit should check if a valid hex number was entered, but just in case...
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bool newPageNumberOk;
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int newPageNumberRead = newPageNumberString.toInt(&newPageNumberOk, 16);
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if (newPageNumberOk && newPageNumberRead >= 0x100 && newPageNumberRead <= 0x8ff)
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m_fastTextLink[linkNumber] = newPageNumberRead;
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}
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void TeletextDocument::cursorUp()
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{
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if (--m_cursorRow == 0)
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m_cursorRow = 24;
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emit cursorMoved();
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}
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void TeletextDocument::cursorDown()
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{
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if (++m_cursorRow == 25)
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m_cursorRow = 1;
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emit cursorMoved();
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}
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void TeletextDocument::cursorLeft()
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{
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if (--m_cursorColumn == -1) {
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m_cursorColumn = 39;
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cursorUp();
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}
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emit cursorMoved();
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}
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void TeletextDocument::cursorRight()
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{
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if (++m_cursorColumn == 40) {
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m_cursorColumn = 0;
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cursorDown();
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}
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emit cursorMoved();
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}
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void TeletextDocument::moveCursor(int newCursorRow, int newCursorColumn)
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{
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m_cursorRow = newCursorRow;
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m_cursorColumn = newCursorColumn;
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emit cursorMoved();
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}
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OverwriteCharacterCommand::OverwriteCharacterCommand(TeletextDocument *teletextDocument, unsigned char newCharacter, QUndoCommand *parent) : QUndoCommand(parent)
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{
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m_teletextDocument = teletextDocument;
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m_subPageIndex = teletextDocument->currentSubPageIndex();
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m_row = teletextDocument->cursorRow();
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m_column = teletextDocument->cursorColumn();
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m_oldCharacter = teletextDocument->currentSubPage()->character(m_row, m_column);
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m_newCharacter = newCharacter;
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}
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void OverwriteCharacterCommand::undo()
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{
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m_teletextDocument->selectSubPageIndex(m_subPageIndex);
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m_teletextDocument->currentSubPage()->setCharacter(m_row, m_column, m_oldCharacter);
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m_teletextDocument->moveCursor(m_row, m_column);
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setText(QObject::tr("overwrite char"));
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emit m_teletextDocument->contentsChange(m_row);
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}
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void OverwriteCharacterCommand::redo()
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{
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m_teletextDocument->selectSubPageIndex(m_subPageIndex);
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m_teletextDocument->currentSubPage()->setCharacter(m_row, m_column, m_newCharacter);
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m_teletextDocument->moveCursor(m_row, m_column);
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m_teletextDocument->cursorRight();
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setText(QObject::tr("overwrite char"));
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emit m_teletextDocument->contentsChange(m_row);
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}
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ToggleMosaicBitCommand::ToggleMosaicBitCommand(TeletextDocument *teletextDocument, unsigned char bitToToggle, QUndoCommand *parent) : QUndoCommand(parent)
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{
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m_teletextDocument = teletextDocument;
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m_subPageIndex = teletextDocument->currentSubPageIndex();
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m_row = teletextDocument->cursorRow();
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m_column = teletextDocument->cursorColumn();
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m_oldCharacter = teletextDocument->currentSubPage()->character(m_row, m_column);
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if (bitToToggle == 0x20 || bitToToggle == 0x7f)
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m_newCharacter = bitToToggle;
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else
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m_newCharacter = m_oldCharacter ^ bitToToggle;
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}
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void ToggleMosaicBitCommand::undo()
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{
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m_teletextDocument->selectSubPageIndex(m_subPageIndex);
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m_teletextDocument->currentSubPage()->setCharacter(m_row, m_column, m_oldCharacter);
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m_teletextDocument->moveCursor(m_row, m_column);
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setText(QObject::tr("mosaic"));
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emit m_teletextDocument->contentsChange(m_row);
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}
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void ToggleMosaicBitCommand::redo()
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{
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m_teletextDocument->selectSubPageIndex(m_subPageIndex);
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m_teletextDocument->currentSubPage()->setCharacter(m_row, m_column, m_newCharacter);
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m_teletextDocument->moveCursor(m_row, m_column);
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setText(QObject::tr("mosaic"));
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emit m_teletextDocument->contentsChange(m_row);
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}
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bool ToggleMosaicBitCommand::mergeWith(const QUndoCommand *command)
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{
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const ToggleMosaicBitCommand *previousCommand = static_cast<const ToggleMosaicBitCommand *>(command);
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if (m_subPageIndex != previousCommand->m_subPageIndex || m_row != previousCommand->m_row || m_column != previousCommand->m_column)
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return false;
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m_newCharacter = previousCommand->m_newCharacter;
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return true;
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}
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BackspaceCommand::BackspaceCommand(TeletextDocument *teletextDocument, QUndoCommand *parent) : QUndoCommand(parent)
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{
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m_teletextDocument = teletextDocument;
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m_subPageIndex = teletextDocument->currentSubPageIndex();
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m_row = teletextDocument->cursorRow();
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m_column = teletextDocument->cursorColumn()-1;
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if (m_column == -1) {
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m_column = 39;
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if (--m_row == 0)
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m_row = 24;
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}
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m_deletedCharacter = teletextDocument->currentSubPage()->character(m_row, m_column);
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}
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void BackspaceCommand::undo()
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{
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m_teletextDocument->selectSubPageIndex(m_subPageIndex);
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m_teletextDocument->currentSubPage()->setCharacter(m_row, m_column, m_deletedCharacter);
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m_teletextDocument->moveCursor(m_row, m_column);
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m_teletextDocument->cursorRight();
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setText(QObject::tr("backspace"));
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emit m_teletextDocument->contentsChange(m_row);
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}
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void BackspaceCommand::redo()
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{
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m_teletextDocument->selectSubPageIndex(m_subPageIndex);
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m_teletextDocument->currentSubPage()->setCharacter(m_row, m_column, 0x20);
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m_teletextDocument->moveCursor(m_row, m_column);
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setText(QObject::tr("backspace"));
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emit m_teletextDocument->contentsChange(m_row);
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}
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InsertSubPageCommand::InsertSubPageCommand(TeletextDocument *teletextDocument, bool afterCurrentSubPage, bool copySubPage, QUndoCommand *parent) : QUndoCommand(parent)
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{
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m_teletextDocument = teletextDocument;
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m_newSubPageIndex = teletextDocument->currentSubPageIndex()+afterCurrentSubPage;
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m_copySubPage = copySubPage;
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}
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void InsertSubPageCommand::undo()
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{
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m_teletextDocument->deleteSubPage(m_newSubPageIndex);
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//TODO should we always wrench to "subpage viewed when we inserted"? Or just if subpage viewed is being deleted?
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m_teletextDocument->selectSubPageIndex(m_newSubPageIndex, true);
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setText(QObject::tr("insert subpage"));
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}
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void InsertSubPageCommand::redo()
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{
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m_teletextDocument->insertSubPage(m_newSubPageIndex, m_copySubPage);
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m_teletextDocument->selectSubPageIndex(m_newSubPageIndex, true);
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setText(QObject::tr("insert subpage"));
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}
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SetColourCommand::SetColourCommand(TeletextDocument *teletextDocument, int colourIndex, int newColour, QUndoCommand *parent) : QUndoCommand(parent)
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{
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m_teletextDocument = teletextDocument;
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m_subPageIndex = teletextDocument->currentSubPageIndex();
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m_colourIndex = colourIndex;
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m_oldColour = teletextDocument->currentSubPage()->CLUT(colourIndex);
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m_newColour = newColour;
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}
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void SetColourCommand::undo()
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{
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m_teletextDocument->selectSubPageIndex(m_subPageIndex);
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m_teletextDocument->currentSubPage()->setCLUT(m_colourIndex, m_oldColour);
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emit m_teletextDocument->colourChanged(m_colourIndex);
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setText(QObject::tr("colour change"));
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emit m_teletextDocument->refreshNeeded();
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}
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void SetColourCommand::redo()
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{
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m_teletextDocument->selectSubPageIndex(m_subPageIndex);
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m_teletextDocument->currentSubPage()->setCLUT(m_colourIndex, m_newColour);
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emit m_teletextDocument->colourChanged(m_colourIndex);
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setText(QObject::tr("colour change"));
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emit m_teletextDocument->refreshNeeded();
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}
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ResetCLUTCommand::ResetCLUTCommand(TeletextDocument *teletextDocument, int colourTable, QUndoCommand *parent) : QUndoCommand(parent)
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{
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m_teletextDocument = teletextDocument;
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m_subPageIndex = teletextDocument->currentSubPageIndex();
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m_colourTable = colourTable;
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for (int i=m_colourTable*8; i<m_colourTable*8+8; i++)
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m_oldColourEntry[i&7] = teletextDocument->currentSubPage()->CLUT(i);
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}
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void ResetCLUTCommand::undo()
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{
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m_teletextDocument->selectSubPageIndex(m_subPageIndex);
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for (int i=m_colourTable*8; i<m_colourTable*8+8; i++) {
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m_teletextDocument->currentSubPage()->setCLUT(i, m_oldColourEntry[i&7]);
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emit m_teletextDocument->colourChanged(i);
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}
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setText(QObject::tr("CLUT %1 reset").arg(m_colourTable));
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emit m_teletextDocument->refreshNeeded();
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}
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void ResetCLUTCommand::redo()
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{
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m_teletextDocument->selectSubPageIndex(m_subPageIndex);
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for (int i=m_colourTable*8; i<m_colourTable*8+8; i++) {
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m_teletextDocument->currentSubPage()->setCLUT(i, m_teletextDocument->currentSubPage()->CLUT(i, 0));
|
||||
emit m_teletextDocument->colourChanged(i);
|
||||
}
|
||||
setText(QObject::tr("CLUT %1 reset").arg(m_colourTable));
|
||||
emit m_teletextDocument->refreshNeeded();
|
||||
}
|
||||
Reference in New Issue
Block a user