3ebfbff369
This paves the way for different FastText links per subpage. Will also be some help when we come to splitting out document loading and saving.
596 lines
20 KiB
C++
596 lines
20 KiB
C++
/*
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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 "levelonepage.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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m_empty = true;
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m_subPages.push_back(new LevelOnePage);
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m_subPages[0]->setPageNumber(m_pageNumber);
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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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m_selectionSubPage = nullptr;
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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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LevelOnePage::CycleTypeEnum mostRecentCycleType;
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LevelOnePage* 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 LevelOnePage);
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m_subPages.back()->setPageNumber(m_pageNumber);
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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") ? LevelOnePage::CTcycles : LevelOnePage::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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if (fastTextLinkRead == 0)
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fastTextLinkRead = 0x8ff;
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// Stored as page link with relative magazine number, convert from absolute page number that was read
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fastTextLinkRead ^= m_pageNumber & 0x700;
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fastTextLinkRead &= 0x7ff; // Fixes magazine 8 to 0
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loadingPage->setFastTextLinkPageNumber(i, fastTextLinkRead);
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}
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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 (subPage->fastTextLinkPageNumber(0) != 0x8ff) {
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*outStream << "FL,";
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for (int i=0; i<6; i++) {
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// Stored as page link with relative magazine number, convert to absolute page number for display
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int absoluteLinkPageNumber = subPage->fastTextLinkPageNumber(i) ^ (m_pageNumber & 0x700);
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// Fix magazine 0 to 8
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if ((absoluteLinkPageNumber & 0x700) == 0x000)
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absoluteLinkPageNumber |= 0x800;
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*outStream << QString("%1").arg(absoluteLinkPageNumber, 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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LevelOnePage *insertedSubPage;
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if (copySubPage)
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insertedSubPage = new LevelOnePage(*m_subPages.at(beforeSubPageIndex));
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else
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insertedSubPage = new LevelOnePage;
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insertedSubPage->setPageNumber(m_pageNumber);
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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 pageNumberString)
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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 pageNumberOk;
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int pageNumberRead = pageNumberString.toInt(&pageNumberOk, 16);
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if ((!pageNumberOk) || pageNumberRead < 0x100 || pageNumberRead > 0x8fe)
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return;
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// If the magazine number was changed, we need to update the relative magazine numbers in FastText
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// and page enhancement links
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int oldMagazine = (m_pageNumber & 0xf00);
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int newMagazine = (pageNumberRead & 0xf00);
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// Fix magazine 0 to 8
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if (oldMagazine == 0x800)
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oldMagazine = 0x000;
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if (newMagazine == 0x800)
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newMagazine = 0x000;
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int magazineFlip = oldMagazine ^ newMagazine;
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m_pageNumber = pageNumberRead;
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for (auto &subPage : m_subPages) {
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subPage->setPageNumber(pageNumberRead);
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if (magazineFlip) {
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for (int i=0; i<6; i++)
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subPage->setFastTextLinkPageNumber(i, subPage->fastTextLinkPageNumber(i) ^ magazineFlip);
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for (int i=0; i<8; i++)
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subPage->setComposeLinkPageNumber(i, subPage->composeLinkPageNumber(i) ^ magazineFlip);
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}
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}
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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::setFastTextLinkPageNumberOnAllSubPages(int linkNumber, int pageNumber)
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{
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for (auto &subPage : m_subPages)
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subPage->setFastTextLinkPageNumber(linkNumber, pageNumber);
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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 cursorRow, int cursorColumn)
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{
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if (cursorRow != -1)
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m_cursorRow = cursorRow;
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if (cursorColumn != -1)
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m_cursorColumn = cursorColumn;
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emit cursorMoved();
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}
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void TeletextDocument::setSelection(int topRow, int leftColumn, int bottomRow, int rightColumn)
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{
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if (m_selectionTopRow != topRow || m_selectionBottomRow != bottomRow || m_selectionLeftColumn != leftColumn || m_selectionRightColumn != rightColumn) {
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m_selectionSubPage = currentSubPage();
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m_selectionTopRow = topRow;
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m_selectionBottomRow = bottomRow;
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m_selectionLeftColumn = leftColumn;
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m_selectionRightColumn = rightColumn;
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emit selectionMoved();
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}
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}
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void TeletextDocument::cancelSelection()
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{
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m_selectionSubPage = nullptr;
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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::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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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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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::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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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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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::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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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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InsertRowCommand::InsertRowCommand(TeletextDocument *teletextDocument, bool copyRow, 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_copyRow = copyRow;
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}
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void InsertRowCommand::redo()
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{
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m_teletextDocument->selectSubPageIndex(m_subPageIndex);
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m_teletextDocument->moveCursor(m_row, -1);
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// Store copy of the bottom row we're about to push out, for undo
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for (int c=0; c<40; c++)
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m_deletedBottomRow[c] = m_teletextDocument->currentSubPage()->character(23, c);
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// Shuffle lines below the inserting row downwards without affecting the FastText row
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for (int r=22; r>=m_row; r--)
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for (int c=0; c<40; c++)
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m_teletextDocument->currentSubPage()->setCharacter(r+1, c, m_teletextDocument->currentSubPage()->character(r, c));
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if (m_copyRow)
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setText(QObject::tr("insert copy row"));
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else {
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// The above shuffle leaves a duplicate of the current row, so blank it if requested
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for (int c=0; c<40; c++)
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m_teletextDocument->currentSubPage()->setCharacter(m_row, c, ' ');
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setText(QObject::tr("insert blank row"));
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}
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emit m_teletextDocument->refreshNeeded();
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}
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void InsertRowCommand::undo()
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{
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m_teletextDocument->selectSubPageIndex(m_subPageIndex);
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m_teletextDocument->moveCursor(m_row, -1);
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// Shuffle lines below the deleting row upwards without affecting the FastText row
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for (int r=m_row; r<23; r++)
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for (int c=0; c<40; c++)
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m_teletextDocument->currentSubPage()->setCharacter(r, c, m_teletextDocument->currentSubPage()->character(r+1, c));
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// Now repair the bottom row we pushed out
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for (int c=0; c<40; c++)
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m_teletextDocument->currentSubPage()->setCharacter(23, c, m_deletedBottomRow[c]);
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if (m_copyRow)
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setText(QObject::tr("insert copy row"));
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else
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setText(QObject::tr("insert blank row"));
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emit m_teletextDocument->refreshNeeded();
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}
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DeleteRowCommand::DeleteRowCommand(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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|
}
|
|
|
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void DeleteRowCommand::redo()
|
|
{
|
|
m_teletextDocument->selectSubPageIndex(m_subPageIndex);
|
|
m_teletextDocument->moveCursor(m_row, -1);
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|
// Store copy of the row we're going to delete, for undo
|
|
for (int c=0; c<40; c++)
|
|
m_deletedRow[c] = m_teletextDocument->currentSubPage()->character(m_row, c);
|
|
// Shuffle lines below the deleting row upwards without affecting the FastText row
|
|
for (int r=m_row; r<23; r++)
|
|
for (int c=0; c<40; c++)
|
|
m_teletextDocument->currentSubPage()->setCharacter(r, c, m_teletextDocument->currentSubPage()->character(r+1, c));
|
|
// If we deleted the FastText row blank that row, otherwise blank the last row
|
|
int blankingRow = (m_row < 24) ? 23 : 24;
|
|
for (int c=0; c<40; c++)
|
|
m_teletextDocument->currentSubPage()->setCharacter(blankingRow, c, ' ');
|
|
setText(QObject::tr("delete row"));
|
|
emit m_teletextDocument->refreshNeeded();
|
|
}
|
|
|
|
void DeleteRowCommand::undo()
|
|
{
|
|
m_teletextDocument->selectSubPageIndex(m_subPageIndex);
|
|
m_teletextDocument->moveCursor(m_row, -1);
|
|
// Shuffle lines below the inserting row downwards without affecting the FastText row
|
|
for (int r=22; r>=m_row; r--)
|
|
for (int c=0; c<40; c++)
|
|
m_teletextDocument->currentSubPage()->setCharacter(r+1, c, m_teletextDocument->currentSubPage()->character(r, c));
|
|
// Now repair the row we deleted
|
|
for (int c=0; c<40; c++)
|
|
m_teletextDocument->currentSubPage()->setCharacter(m_row, c, m_deletedRow[c]);
|
|
setText(QObject::tr("delete row"));
|
|
emit m_teletextDocument->refreshNeeded();
|
|
}
|
|
|
|
|
|
InsertSubPageCommand::InsertSubPageCommand(TeletextDocument *teletextDocument, bool afterCurrentSubPage, bool copySubPage, QUndoCommand *parent) : QUndoCommand(parent)
|
|
{
|
|
m_teletextDocument = teletextDocument;
|
|
m_newSubPageIndex = teletextDocument->currentSubPageIndex()+afterCurrentSubPage;
|
|
m_copySubPage = copySubPage;
|
|
}
|
|
|
|
void InsertSubPageCommand::redo()
|
|
{
|
|
m_teletextDocument->insertSubPage(m_newSubPageIndex, m_copySubPage);
|
|
m_teletextDocument->selectSubPageIndex(m_newSubPageIndex, true);
|
|
setText(QObject::tr("insert subpage"));
|
|
}
|
|
|
|
void InsertSubPageCommand::undo()
|
|
{
|
|
m_teletextDocument->deleteSubPage(m_newSubPageIndex);
|
|
//TODO should we always wrench to "subpage viewed when we inserted"? Or just if subpage viewed is being deleted?
|
|
m_teletextDocument->selectSubPageIndex(m_newSubPageIndex, true);
|
|
setText(QObject::tr("insert subpage"));
|
|
}
|
|
|
|
|
|
SetColourCommand::SetColourCommand(TeletextDocument *teletextDocument, int colourIndex, int newColour, QUndoCommand *parent) : QUndoCommand(parent)
|
|
{
|
|
m_teletextDocument = teletextDocument;
|
|
m_subPageIndex = teletextDocument->currentSubPageIndex();
|
|
m_colourIndex = colourIndex;
|
|
m_oldColour = teletextDocument->currentSubPage()->CLUT(colourIndex);
|
|
m_newColour = newColour;
|
|
}
|
|
|
|
void SetColourCommand::redo()
|
|
{
|
|
m_teletextDocument->selectSubPageIndex(m_subPageIndex);
|
|
m_teletextDocument->currentSubPage()->setCLUT(m_colourIndex, m_newColour);
|
|
emit m_teletextDocument->colourChanged(m_colourIndex);
|
|
setText(QObject::tr("colour change"));
|
|
emit m_teletextDocument->refreshNeeded();
|
|
}
|
|
|
|
void SetColourCommand::undo()
|
|
{
|
|
m_teletextDocument->selectSubPageIndex(m_subPageIndex);
|
|
m_teletextDocument->currentSubPage()->setCLUT(m_colourIndex, m_oldColour);
|
|
emit m_teletextDocument->colourChanged(m_colourIndex);
|
|
setText(QObject::tr("colour change"));
|
|
emit m_teletextDocument->refreshNeeded();
|
|
}
|
|
|
|
|
|
ResetCLUTCommand::ResetCLUTCommand(TeletextDocument *teletextDocument, int colourTable, QUndoCommand *parent) : QUndoCommand(parent)
|
|
{
|
|
m_teletextDocument = teletextDocument;
|
|
m_subPageIndex = teletextDocument->currentSubPageIndex();
|
|
m_colourTable = colourTable;
|
|
for (int i=m_colourTable*8; i<m_colourTable*8+8; i++)
|
|
m_oldColourEntry[i&7] = teletextDocument->currentSubPage()->CLUT(i);
|
|
}
|
|
|
|
void ResetCLUTCommand::redo()
|
|
{
|
|
m_teletextDocument->selectSubPageIndex(m_subPageIndex);
|
|
for (int i=m_colourTable*8; i<m_colourTable*8+8; i++) {
|
|
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();
|
|
}
|
|
|
|
void ResetCLUTCommand::undo()
|
|
{
|
|
m_teletextDocument->selectSubPageIndex(m_subPageIndex);
|
|
for (int i=m_colourTable*8; i<m_colourTable*8+8; i++) {
|
|
m_teletextDocument->currentSubPage()->setCLUT(i, m_oldColourEntry[i&7]);
|
|
emit m_teletextDocument->colourChanged(i);
|
|
}
|
|
setText(QObject::tr("CLUT %1 reset").arg(m_colourTable));
|
|
emit m_teletextDocument->refreshNeeded();
|
|
}
|