Port to CMake from qmake, and split decoder into subdirectory
Qt 5 has had to be dropped as CMakeLists.txt uses qt_* specific commands which are implemented in Qt 6 onwards. cmake --install is only working on Linux at the moment; it installs the executable and the bundled example tti files into /usr/local/share/doc The teletext decoder with its document storage has been moved to a subdirectory with the intention of making it possible to use in other projects, but some further separation of editing stuff will be needed.
This commit is contained in:
G.K.MacGregor
948
src/qteletextmaker/levelonecommands.cpp
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948
src/qteletextmaker/levelonecommands.cpp
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@@ -0,0 +1,948 @@
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/*
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* Copyright (C) 2020-2024 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 <QApplication>
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#include <QByteArray>
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#include <QByteArrayList>
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#include <QClipboard>
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#include <QImage>
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#include <QMimeData>
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#include <QRegularExpression>
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#include <QSet>
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#include "levelonecommands.h"
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#include "document.h"
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#include "keymap.h"
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LevelOneCommand::LevelOneCommand(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();
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m_firstDo = true;
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}
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QByteArrayList LevelOneCommand::storeCharacters(int topRow, int leftColumn, int bottomRow, int rightColumn)
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{
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QByteArrayList result;
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for (int r=topRow; r<=bottomRow; r++) {
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QByteArray rowArray;
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for (int c=leftColumn; c<=rightColumn; c++)
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// Guard against size of pasted block going beyond last line or column
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if (r < 25 && c < 40)
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rowArray.append(m_teletextDocument->currentSubPage()->character(r, c));
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else
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// Gone beyond last line or column - store a filler character which we won't see
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// Not sure if this is really necessary as out-of-bounds access might not occur?
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rowArray.append(0x7f);
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result.append(rowArray);
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}
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return result;
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}
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void LevelOneCommand::retrieveCharacters(int topRow, int leftColumn, const QByteArrayList &storedChars)
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{
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const int bottomRow = topRow + storedChars.size() - 1;
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const int rightColumn = leftColumn + storedChars.at(0).size() - 1;
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int arrayR = 0;
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int arrayC;
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for (int r=topRow; r<=bottomRow; r++) {
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arrayC = 0;
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for (int c=leftColumn; c<=rightColumn; c++)
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// Guard against size of pasted block going beyond last line or column
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if (r < 25 && c < 40) {
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m_teletextDocument->currentSubPage()->setCharacter(r, c, storedChars.at(arrayR).at(arrayC));
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arrayC++;
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}
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arrayR++;
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}
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}
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TypeCharacterCommand::TypeCharacterCommand(TeletextDocument *teletextDocument, unsigned char newCharacter, bool insertMode, QUndoCommand *parent) : LevelOneCommand(teletextDocument, parent)
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{
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m_columnStart = m_columnEnd = m_column;
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m_newCharacter = newCharacter;
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m_insertMode = insertMode;
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for (int c=0; c<40; c++)
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m_oldRowContents[c] = m_newRowContents[c] = m_teletextDocument->currentSubPage()->character(m_row, c);
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if (m_insertMode)
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setText(QObject::tr("insert character"));
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else
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setText(QObject::tr("overwrite character"));
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}
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void TypeCharacterCommand::redo()
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{
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m_teletextDocument->selectSubPageIndex(m_subPageIndex);
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// Only apply the typed character on the first do, m_newRowContents will remember it if we redo
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if (m_firstDo) {
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if (m_insertMode) {
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// Insert - Move characters rightwards
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for (int c=39; c>m_columnEnd; c--)
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m_newRowContents[c] = m_newRowContents[c-1];
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}
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m_newRowContents[m_columnEnd] = m_newCharacter;
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m_firstDo = false;
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}
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for (int c=0; c<40; c++)
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m_teletextDocument->currentSubPage()->setCharacter(m_row, c, m_newRowContents[c]);
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m_teletextDocument->moveCursor(m_row, m_columnEnd);
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m_teletextDocument->cursorRight();
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emit m_teletextDocument->contentsChanged();
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}
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void TypeCharacterCommand::undo()
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{
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m_teletextDocument->selectSubPageIndex(m_subPageIndex);
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for (int c=0; c<40; c++)
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m_teletextDocument->currentSubPage()->setCharacter(m_row, c, m_oldRowContents[c]);
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m_teletextDocument->moveCursor(m_row, m_columnStart);
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emit m_teletextDocument->contentsChanged();
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}
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bool TypeCharacterCommand::mergeWith(const QUndoCommand *command)
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{
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const TypeCharacterCommand *newerCommand = static_cast<const TypeCharacterCommand *>(command);
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// Has to be the next typed column on the same row
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if (m_subPageIndex != newerCommand->m_subPageIndex || m_row != newerCommand->m_row || m_columnEnd != newerCommand->m_columnEnd-1)
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return false;
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m_columnEnd = newerCommand->m_columnEnd;
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for (int c=0; c<40; c++)
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m_newRowContents[c] = newerCommand->m_newRowContents[c];
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return true;
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}
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ToggleMosaicBitCommand::ToggleMosaicBitCommand(TeletextDocument *teletextDocument, unsigned char bitToToggle, QUndoCommand *parent) : LevelOneCommand(teletextDocument, parent)
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{
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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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// Clear or fill the whole mosaic character
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m_newCharacter = bitToToggle;
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else if (bitToToggle == 0x66)
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// Dither
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m_newCharacter = (m_row & 1) ? 0x66 : 0x39;
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else if (m_oldCharacter & 0x20)
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// Previous character was mosaic, just toggle the bit(s)
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m_newCharacter = m_oldCharacter ^ bitToToggle;
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else
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// Previous character was blast-through, change to mosaic and set bit alone
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m_newCharacter = bitToToggle | 0x20;
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setText(QObject::tr("mosaic"));
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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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emit m_teletextDocument->contentsChanged();
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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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emit m_teletextDocument->contentsChanged();
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}
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bool ToggleMosaicBitCommand::mergeWith(const QUndoCommand *command)
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{
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const ToggleMosaicBitCommand *newerCommand = static_cast<const ToggleMosaicBitCommand *>(command);
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if (m_subPageIndex != newerCommand->m_subPageIndex || m_row != newerCommand->m_row || m_column != newerCommand->m_column)
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return false;
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m_newCharacter = newerCommand->m_newCharacter;
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return true;
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}
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BackspaceKeyCommand::BackspaceKeyCommand(TeletextDocument *teletextDocument, bool insertMode, QUndoCommand *parent) : LevelOneCommand(teletextDocument, parent)
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{
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m_columnStart = m_column - 1;
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if (m_columnStart == -1) {
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m_columnStart = 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_columnEnd = m_columnStart;
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m_insertMode = insertMode;
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for (int c=0; c<40; c++)
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m_oldRowContents[c] = m_newRowContents[c] = m_teletextDocument->currentSubPage()->character(m_row, c);
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setText(QObject::tr("backspace"));
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}
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void BackspaceKeyCommand::redo()
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{
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m_teletextDocument->selectSubPageIndex(m_subPageIndex);
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if (m_firstDo) {
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if (m_insertMode) {
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// Insert - Move characters leftwards and put a space on the far right
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for (int c=m_columnEnd; c<39; c++)
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m_newRowContents[c] = m_newRowContents[c+1];
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m_newRowContents[39] = 0x20;
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} else
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// Replace - Overwrite backspaced character with a space
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m_newRowContents[m_columnEnd] = 0x20;
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m_firstDo = false;
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}
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for (int c=0; c<40; c++)
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m_teletextDocument->currentSubPage()->setCharacter(m_row, c, m_newRowContents[c]);
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m_teletextDocument->moveCursor(m_row, m_columnEnd);
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emit m_teletextDocument->contentsChanged();
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}
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void BackspaceKeyCommand::undo()
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{
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m_teletextDocument->selectSubPageIndex(m_subPageIndex);
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for (int c=0; c<40; c++)
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m_teletextDocument->currentSubPage()->setCharacter(m_row, c, m_oldRowContents[c]);
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m_teletextDocument->moveCursor(m_row, m_columnStart);
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m_teletextDocument->cursorRight();
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emit m_teletextDocument->contentsChanged();
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}
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bool BackspaceKeyCommand::mergeWith(const QUndoCommand *command)
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{
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const BackspaceKeyCommand *newerCommand = static_cast<const BackspaceKeyCommand *>(command);
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// Has to be the next backspaced column on the same row
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if (m_subPageIndex != newerCommand->m_subPageIndex || m_row != newerCommand->m_row || m_columnEnd != newerCommand->m_columnEnd+1)
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return false;
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// For backspacing m_columnStart is where we began backspacing and m_columnEnd is where we ended backspacing
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// so m_columnEnd will be less than m_columnStart
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m_columnEnd = newerCommand->m_columnEnd;
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for (int c=0; c<40; c++)
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m_newRowContents[c] = newerCommand->m_newRowContents[c];
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return true;
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}
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DeleteKeyCommand::DeleteKeyCommand(TeletextDocument *teletextDocument, QUndoCommand *parent) : LevelOneCommand(teletextDocument, parent)
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{
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for (int c=0; c<40; c++)
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m_oldRowContents[c] = m_newRowContents[c] = m_teletextDocument->currentSubPage()->character(m_row, c);
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setText(QObject::tr("delete"));
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}
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void DeleteKeyCommand::redo()
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{
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m_teletextDocument->selectSubPageIndex(m_subPageIndex);
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// Move characters leftwards and put a space on the far right
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for (int c=m_column; c<39; c++)
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m_newRowContents[c] = m_newRowContents[c+1];
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m_newRowContents[39] = 0x20;
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for (int c=0; c<40; c++)
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m_teletextDocument->currentSubPage()->setCharacter(m_row, c, m_newRowContents[c]);
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m_teletextDocument->moveCursor(m_row, m_column);
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emit m_teletextDocument->contentsChanged();
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}
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void DeleteKeyCommand::undo()
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{
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m_teletextDocument->selectSubPageIndex(m_subPageIndex);
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for (int c=0; c<40; c++)
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m_teletextDocument->currentSubPage()->setCharacter(m_row, c, m_oldRowContents[c]);
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m_teletextDocument->moveCursor(m_row, m_column);
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emit m_teletextDocument->contentsChanged();
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}
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bool DeleteKeyCommand::mergeWith(const QUndoCommand *command)
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{
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const DeleteKeyCommand *newerCommand = static_cast<const DeleteKeyCommand *>(command);
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if (m_subPageIndex != newerCommand->m_subPageIndex || m_row != newerCommand->m_row || m_column != newerCommand->m_column)
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return false;
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for (int c=0; c<40; c++)
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m_newRowContents[c] = newerCommand->m_newRowContents[c];
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return true;
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}
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ShiftMosaicsCommand::ShiftMosaicsCommand(TeletextDocument *teletextDocument, const QSet<QPair<int, int>> &mosaicList, QUndoCommand *parent) : LevelOneCommand(teletextDocument, parent)
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{
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m_selectionTopRow = m_teletextDocument->selectionTopRow();
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m_selectionLeftColumn = m_teletextDocument->selectionLeftColumn();
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m_selectionBottomRow = m_teletextDocument->selectionBottomRow();
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m_selectionRightColumn = m_teletextDocument->selectionRightColumn();
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m_selectionCornerRow = m_teletextDocument->selectionCornerRow();
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m_selectionCornerColumn = m_teletextDocument->selectionCornerColumn();
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m_mosaicList = mosaicList;
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m_oldCharacters = storeCharacters(m_selectionTopRow, m_selectionLeftColumn, m_selectionBottomRow, m_selectionRightColumn);
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m_newCharacters = m_oldCharacters;
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}
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void ShiftMosaicsCommand::redo()
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{
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m_teletextDocument->selectSubPageIndex(m_subPageIndex);
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retrieveCharacters(m_selectionTopRow, m_selectionLeftColumn, m_newCharacters);
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emit m_teletextDocument->contentsChanged();
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m_teletextDocument->setSelectionCorner(m_selectionCornerRow, m_selectionCornerColumn);
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m_teletextDocument->moveCursor(m_row, m_column, true);
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}
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void ShiftMosaicsCommand::undo()
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{
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m_teletextDocument->selectSubPageIndex(m_subPageIndex);
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retrieveCharacters(m_selectionTopRow, m_selectionLeftColumn, m_oldCharacters);
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emit m_teletextDocument->contentsChanged();
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m_teletextDocument->setSelectionCorner(m_selectionCornerRow, m_selectionCornerColumn);
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m_teletextDocument->moveCursor(m_row, m_column, true);
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}
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bool ShiftMosaicsCommand::mergeWith(const QUndoCommand *command)
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{
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const ShiftMosaicsCommand *newerCommand = static_cast<const ShiftMosaicsCommand *>(command);
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if (m_subPageIndex != newerCommand->m_subPageIndex || m_selectionTopRow != newerCommand->m_selectionTopRow || m_selectionLeftColumn != newerCommand->m_selectionLeftColumn || m_selectionBottomRow != newerCommand->m_selectionBottomRow || m_selectionRightColumn != newerCommand->m_selectionRightColumn)
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return false;
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m_newCharacters = newerCommand->m_newCharacters;
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return true;
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}
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ShiftMosaicsUpCommand::ShiftMosaicsUpCommand(TeletextDocument *teletextDocument, const QSet<QPair<int, int>> &mosaicList, QUndoCommand *parent) : ShiftMosaicsCommand(teletextDocument, mosaicList, parent)
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{
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for (int r=m_selectionTopRow; r<=m_selectionBottomRow; r++)
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for (int c=m_selectionLeftColumn; c<=m_selectionRightColumn; c++)
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if (m_mosaicList.contains(qMakePair(r, c))) {
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const int lr = r - m_selectionTopRow;
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const int lc = c - m_selectionLeftColumn;
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unsigned char mosaicWrap = 0x00;
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for (int sr=r+1; sr<=m_selectionBottomRow; sr++)
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if (m_mosaicList.contains(qMakePair(sr, c))) {
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mosaicWrap = m_newCharacters[sr - m_selectionTopRow][lc];
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mosaicWrap = ((mosaicWrap & 0x01) << 4) | ((mosaicWrap & 0x02) << 5);
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break;
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}
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m_newCharacters[lr][lc] = ((m_newCharacters[lr][lc] >> 2) & 0x07) | ((m_newCharacters[lr][lc] & 0x40) >> 3) | mosaicWrap | 0x20;
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}
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setText(QObject::tr("shift mosaics up"));
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}
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ShiftMosaicsDownCommand::ShiftMosaicsDownCommand(TeletextDocument *teletextDocument, const QSet<QPair<int, int>> &mosaicList, QUndoCommand *parent) : ShiftMosaicsCommand(teletextDocument, mosaicList, parent)
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{
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for (int r=m_selectionBottomRow; r>=m_selectionTopRow; r--)
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for (int c=m_selectionLeftColumn; c<=m_selectionRightColumn; c++)
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if (m_mosaicList.contains(qMakePair(r, c))) {
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const int lr = r - m_selectionTopRow;
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const int lc = c - m_selectionLeftColumn;
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unsigned char mosaicWrap = 0x00;
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for (int sr=r-1; sr>=m_selectionTopRow; sr--)
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if (m_mosaicList.contains(qMakePair(sr, c))) {
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mosaicWrap = m_newCharacters[sr - m_selectionTopRow][lc];
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mosaicWrap = ((mosaicWrap & 0x10) >> 4) | ((mosaicWrap & 0x40) >> 5);
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break;
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}
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m_newCharacters[lr][lc] = ((m_newCharacters[lr][lc] & 0x07) << 2) | ((m_newCharacters[lr][lc] & 0x08) << 3) | mosaicWrap | 0x20;
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}
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setText(QObject::tr("shift mosaics down"));
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}
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ShiftMosaicsLeftCommand::ShiftMosaicsLeftCommand(TeletextDocument *teletextDocument, const QSet<QPair<int, int>> &mosaicList, QUndoCommand *parent) : ShiftMosaicsCommand(teletextDocument, mosaicList, parent)
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{
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for (int c=m_selectionLeftColumn; c<=m_selectionRightColumn; c++)
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||||
for (int r=m_selectionTopRow; r<=m_selectionBottomRow; r++)
|
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if (m_mosaicList.contains(qMakePair(r, c))) {
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const int lr = r - m_selectionTopRow;
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const int lc = c - m_selectionLeftColumn;
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unsigned char mosaicWrap = 0x00;
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for (int sc=c+1; sc<=m_selectionRightColumn; sc++)
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if (m_mosaicList.contains(qMakePair(r, sc))) {
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mosaicWrap = m_newCharacters[lr][sc - m_selectionLeftColumn];
|
||||
mosaicWrap = ((mosaicWrap & 0x05) << 1) | ((mosaicWrap & 0x10) << 2);
|
||||
break;
|
||||
}
|
||||
|
||||
m_newCharacters[lr][lc] = ((m_newCharacters[lr][lc] & 0x0a) >> 1) | ((m_newCharacters[lr][lc] & 0x40) >> 2) | mosaicWrap | 0x20;
|
||||
}
|
||||
|
||||
setText(QObject::tr("shift mosaics left"));
|
||||
}
|
||||
|
||||
ShiftMosaicsRightCommand::ShiftMosaicsRightCommand(TeletextDocument *teletextDocument, const QSet<QPair<int, int>> &mosaicList, QUndoCommand *parent) : ShiftMosaicsCommand(teletextDocument, mosaicList, parent)
|
||||
{
|
||||
for (int c=m_selectionRightColumn; c>=m_selectionLeftColumn; c--)
|
||||
for (int r=m_selectionTopRow; r<=m_selectionBottomRow; r++)
|
||||
if (m_mosaicList.contains(qMakePair(r, c))) {
|
||||
const int lr = r - m_selectionTopRow;
|
||||
const int lc = c - m_selectionLeftColumn;
|
||||
unsigned char mosaicWrap = 0x00;
|
||||
|
||||
for (int sc=c-1; sc>=m_selectionLeftColumn; sc--)
|
||||
if (m_mosaicList.contains(qMakePair(r, sc))) {
|
||||
mosaicWrap = m_newCharacters[lr][sc - m_selectionLeftColumn];
|
||||
mosaicWrap = ((mosaicWrap & 0x0a) >> 1) | ((mosaicWrap & 0x40) >> 2);
|
||||
break;
|
||||
}
|
||||
|
||||
m_newCharacters[lr][lc] = ((m_newCharacters[lr][lc] & 0x05) << 1) | ((m_newCharacters[lr][lc] & 0x10) << 2) | mosaicWrap | 0x20;
|
||||
}
|
||||
|
||||
setText(QObject::tr("shift mosaics right"));
|
||||
}
|
||||
|
||||
|
||||
InsertRowCommand::InsertRowCommand(TeletextDocument *teletextDocument, bool copyRow, QUndoCommand *parent) : LevelOneCommand(teletextDocument, parent)
|
||||
{
|
||||
m_copyRow = copyRow;
|
||||
|
||||
if (m_copyRow)
|
||||
setText(QObject::tr("insert copy row"));
|
||||
else
|
||||
setText(QObject::tr("insert blank row"));
|
||||
}
|
||||
|
||||
void InsertRowCommand::redo()
|
||||
{
|
||||
m_teletextDocument->selectSubPageIndex(m_subPageIndex);
|
||||
m_teletextDocument->moveCursor(m_row, -1);
|
||||
// Store copy of the bottom row we're about to push out, for undo
|
||||
for (int c=0; c<40; c++)
|
||||
m_deletedBottomRow[c] = m_teletextDocument->currentSubPage()->character(23, c);
|
||||
// Move 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));
|
||||
if (!m_copyRow)
|
||||
// The above movement leaves a duplicate of the current row, so blank it if requested
|
||||
for (int c=0; c<40; c++)
|
||||
m_teletextDocument->currentSubPage()->setCharacter(m_row, c, ' ');
|
||||
|
||||
emit m_teletextDocument->contentsChanged();
|
||||
}
|
||||
|
||||
void InsertRowCommand::undo()
|
||||
{
|
||||
m_teletextDocument->selectSubPageIndex(m_subPageIndex);
|
||||
m_teletextDocument->moveCursor(m_row, -1);
|
||||
// Move 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));
|
||||
// Now repair the bottom row we pushed out
|
||||
for (int c=0; c<40; c++)
|
||||
m_teletextDocument->currentSubPage()->setCharacter(23, c, m_deletedBottomRow[c]);
|
||||
|
||||
emit m_teletextDocument->contentsChanged();
|
||||
}
|
||||
|
||||
|
||||
DeleteRowCommand::DeleteRowCommand(TeletextDocument *teletextDocument, QUndoCommand *parent) : LevelOneCommand(teletextDocument, parent)
|
||||
{
|
||||
setText(QObject::tr("delete row"));
|
||||
}
|
||||
|
||||
void DeleteRowCommand::redo()
|
||||
{
|
||||
m_teletextDocument->selectSubPageIndex(m_subPageIndex);
|
||||
m_teletextDocument->moveCursor(m_row, -1);
|
||||
// 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);
|
||||
// Move 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, ' ');
|
||||
|
||||
emit m_teletextDocument->contentsChanged();
|
||||
}
|
||||
|
||||
void DeleteRowCommand::undo()
|
||||
{
|
||||
m_teletextDocument->selectSubPageIndex(m_subPageIndex);
|
||||
m_teletextDocument->moveCursor(m_row, -1);
|
||||
// Move 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]);
|
||||
|
||||
emit m_teletextDocument->contentsChanged();
|
||||
}
|
||||
|
||||
|
||||
#ifndef QT_NO_CLIPBOARD
|
||||
CutCommand::CutCommand(TeletextDocument *teletextDocument, QUndoCommand *parent) : LevelOneCommand(teletextDocument, parent)
|
||||
{
|
||||
m_selectionTopRow = m_teletextDocument->selectionTopRow();
|
||||
m_selectionBottomRow = m_teletextDocument->selectionBottomRow();
|
||||
m_selectionLeftColumn = m_teletextDocument->selectionLeftColumn();
|
||||
m_selectionRightColumn = m_teletextDocument->selectionRightColumn();
|
||||
|
||||
m_selectionCornerRow = m_teletextDocument->selectionCornerRow();
|
||||
m_selectionCornerColumn = m_teletextDocument->selectionCornerColumn();
|
||||
|
||||
m_oldCharacters = storeCharacters(m_selectionTopRow, m_selectionLeftColumn, m_selectionBottomRow, m_selectionRightColumn);
|
||||
|
||||
setText(QObject::tr("cut"));
|
||||
}
|
||||
|
||||
void CutCommand::redo()
|
||||
{
|
||||
m_teletextDocument->selectSubPageIndex(m_subPageIndex);
|
||||
|
||||
for (int r=m_selectionTopRow; r<=m_selectionBottomRow; r++) {
|
||||
for (int c=m_selectionLeftColumn; c<=m_selectionRightColumn; c++)
|
||||
m_teletextDocument->currentSubPage()->setCharacter(r, c, 0x20);
|
||||
}
|
||||
|
||||
emit m_teletextDocument->contentsChanged();
|
||||
}
|
||||
|
||||
void CutCommand::undo()
|
||||
{
|
||||
m_teletextDocument->selectSubPageIndex(m_subPageIndex);
|
||||
|
||||
retrieveCharacters(m_selectionTopRow, m_selectionLeftColumn, m_oldCharacters);
|
||||
|
||||
emit m_teletextDocument->contentsChanged();
|
||||
|
||||
m_teletextDocument->setSelectionCorner(m_selectionCornerRow, m_selectionCornerColumn);
|
||||
m_teletextDocument->moveCursor(m_row, m_column, true);
|
||||
}
|
||||
|
||||
|
||||
PasteCommand::PasteCommand(TeletextDocument *teletextDocument, int pageCharSet, QUndoCommand *parent) : LevelOneCommand(teletextDocument, parent)
|
||||
{
|
||||
const QClipboard *clipboard = QApplication::clipboard();
|
||||
const QMimeData *mimeData = clipboard->mimeData();
|
||||
QByteArray nativeData;
|
||||
|
||||
m_selectionActive = m_teletextDocument->selectionActive();
|
||||
if (m_selectionActive) {
|
||||
m_selectionCornerRow = m_teletextDocument->selectionCornerRow();
|
||||
m_selectionCornerColumn = m_teletextDocument->selectionCornerColumn();
|
||||
m_pasteTopRow = m_teletextDocument->selectionTopRow();
|
||||
m_pasteBottomRow = m_teletextDocument->selectionBottomRow();
|
||||
m_pasteLeftColumn = m_teletextDocument->selectionLeftColumn();
|
||||
m_pasteRightColumn = m_teletextDocument->selectionRightColumn();
|
||||
} else {
|
||||
m_pasteTopRow = m_row;
|
||||
m_pasteLeftColumn = m_column;
|
||||
// m_pasteBottomRow and m_pasteRightColumn will be filled in later
|
||||
// when the size of the clipboard data is known
|
||||
}
|
||||
|
||||
// Zero size here represents invalid or empty clipboard data
|
||||
m_clipboardDataHeight = m_clipboardDataWidth = 0;
|
||||
|
||||
// Try to get something from the clipboard
|
||||
// FIXME is this a correct "custom" mime type? Or should we use vnd?
|
||||
nativeData = mimeData->data("application/x-teletext");
|
||||
if (nativeData.size() > 2) {
|
||||
// Native clipboard data: we put it there ourselves
|
||||
m_plainText = false;
|
||||
m_clipboardDataHeight = nativeData.at(0);
|
||||
m_clipboardDataWidth = nativeData.at(1);
|
||||
|
||||
// Guard against invalid dimensions or total size not matching stated dimensions
|
||||
if (m_clipboardDataHeight > 0 && m_clipboardDataWidth > 0 && m_clipboardDataHeight <= 25 && m_clipboardDataWidth <= 40 && nativeData.size() == m_clipboardDataHeight * m_clipboardDataWidth + 2)
|
||||
for (int r=0; r<m_clipboardDataHeight; r++)
|
||||
m_pastingCharacters.append(nativeData.mid(2 + r * m_clipboardDataWidth, m_clipboardDataWidth));
|
||||
else {
|
||||
// Invalidate
|
||||
m_clipboardDataHeight = m_clipboardDataWidth = 0;
|
||||
return;
|
||||
}
|
||||
|
||||
if (!m_selectionActive) {
|
||||
m_pasteBottomRow = m_row + m_clipboardDataHeight - 1;
|
||||
m_pasteRightColumn = m_column + m_clipboardDataWidth - 1;
|
||||
}
|
||||
} else if (mimeData->hasText()) {
|
||||
// Plain text
|
||||
m_plainText = true;
|
||||
|
||||
const int rightColumn = m_selectionActive ? m_pasteRightColumn : 39;
|
||||
|
||||
// Parse line-feeds in the clipboard data
|
||||
QStringList plainTextData = mimeData->text().split(QRegularExpression("\n|\r\n|\r"));
|
||||
|
||||
// "if" statement will be false if clipboard data is a single line of text
|
||||
// that will fit from the cursor position
|
||||
if (plainTextData.size() != 1 || m_pasteLeftColumn + plainTextData.at(0).size() - 1 > rightColumn) {
|
||||
bool wrappingNeeded = false;
|
||||
|
||||
if (!m_selectionActive) {
|
||||
// If selection is NOT active, use the full width of the page to paste.
|
||||
// The second and subsequent lines will start at column 1
|
||||
m_pasteLeftColumn = 1;
|
||||
|
||||
// Check if first word in the first line will fit from the cursor position
|
||||
bool firstWordFits = true;
|
||||
const int firstSpace = plainTextData.at(0).indexOf(' ');
|
||||
|
||||
if (firstSpace == -1 && m_column + plainTextData.at(0).size() > 40)
|
||||
firstWordFits = false; // Only one word in first line, and it won't fit
|
||||
else if (m_column + firstSpace > 40)
|
||||
firstWordFits = false; // First word in first line won't fit
|
||||
|
||||
// If the first word WILL fit at the cursor position, pad the first line
|
||||
// to match the cursor position using null characters.
|
||||
// In the QString null characters represent character cells in the
|
||||
// pasting rectangle that won't overwrite what's on the page.
|
||||
// If the first word WON'T fit, start pasting at the beginning of the next row.
|
||||
if (firstWordFits)
|
||||
plainTextData[0] = QString(m_column-m_pasteLeftColumn, QChar::Null) + plainTextData.at(0);
|
||||
else if (m_pasteTopRow < 24)
|
||||
m_pasteTopRow++;
|
||||
else
|
||||
return;
|
||||
}
|
||||
|
||||
const int pasteWidth = rightColumn - m_pasteLeftColumn + 1;
|
||||
|
||||
// Find out if we need to word-wrap
|
||||
for (int i=0; i<plainTextData.size(); i++)
|
||||
if (plainTextData.at(i).size() > pasteWidth) {
|
||||
wrappingNeeded = true;
|
||||
break;
|
||||
}
|
||||
|
||||
if (wrappingNeeded) {
|
||||
QStringList wrappedText;
|
||||
|
||||
for (int i=0; i<plainTextData.size(); i++) {
|
||||
// Split this line into individual words
|
||||
QStringList lineWords = plainTextData.at(i).split(' ');
|
||||
|
||||
// If there's any words which are too long to fit,
|
||||
// break them across multiple lines
|
||||
for (int j=0; j<lineWords.size(); j++)
|
||||
if (lineWords.at(j).size() > pasteWidth) {
|
||||
lineWords.insert(j+1, lineWords.at(j).mid(pasteWidth));
|
||||
lineWords[j].truncate(pasteWidth);
|
||||
}
|
||||
|
||||
// Now reassemble the words into lines that will fit
|
||||
QString currentLine = lineWords.at(0);
|
||||
|
||||
for (int j=1; j<lineWords.size(); j++)
|
||||
if (currentLine.size() + 1 + lineWords.at(j).size() <= pasteWidth)
|
||||
currentLine.append(' ' + lineWords.at(j));
|
||||
else {
|
||||
wrappedText.append(currentLine);
|
||||
currentLine = lineWords.at(j);
|
||||
}
|
||||
|
||||
wrappedText.append(currentLine);
|
||||
}
|
||||
plainTextData.swap(wrappedText);
|
||||
}
|
||||
}
|
||||
|
||||
m_clipboardDataHeight = plainTextData.size();
|
||||
m_clipboardDataWidth = 0;
|
||||
|
||||
// Convert the unicode clipboard text into teletext bytes matching the current Level 1
|
||||
// character set of this page
|
||||
for (int r=0; r<m_clipboardDataHeight; r++) {
|
||||
m_pastingCharacters.append(QByteArray());
|
||||
for (int c=0; c<plainTextData.at(r).size(); c++) {
|
||||
char convertedChar;
|
||||
const QChar charToConvert = plainTextData.at(r).at(c);
|
||||
|
||||
// Map a null character in the QString to 0xff (or -1)
|
||||
// In the QByteArray 0xff bytes represent character cells in the pasting rectangle
|
||||
// that won't overwrite what's on the page
|
||||
if (charToConvert == QChar::Null)
|
||||
convertedChar = -1;
|
||||
else if (charToConvert >= QChar(0x01) && charToConvert <= QChar(0x1f))
|
||||
convertedChar = ' ';
|
||||
else if (keymapping[pageCharSet].contains(charToConvert))
|
||||
// Remapped character or non-Latin character converted successfully
|
||||
convertedChar = keymapping[pageCharSet].value(charToConvert);
|
||||
else {
|
||||
// Either a Latin character or non-Latin character that can't be converted
|
||||
// See if it's a Latin character
|
||||
convertedChar = charToConvert.toLatin1();
|
||||
if (convertedChar <= 0)
|
||||
// Couldn't convert - make it a block character so it doesn't need to be inserted-between later on
|
||||
convertedChar = 0x7f;
|
||||
}
|
||||
|
||||
m_pastingCharacters[r].append(convertedChar);
|
||||
}
|
||||
m_clipboardDataWidth = qMax(m_pastingCharacters.at(r).size(), m_clipboardDataWidth);
|
||||
}
|
||||
// Pad the end of short lines with spaces to make a box
|
||||
for (int r=0; r<m_clipboardDataHeight; r++)
|
||||
m_pastingCharacters[r] = m_pastingCharacters.at(r).leftJustified(m_clipboardDataWidth);
|
||||
|
||||
if (!m_selectionActive) {
|
||||
m_pasteBottomRow = m_pasteTopRow + m_clipboardDataHeight - 1;
|
||||
m_pasteRightColumn = m_pasteLeftColumn + m_clipboardDataWidth - 1;
|
||||
}
|
||||
} else if (mimeData->hasImage()) {
|
||||
QImage imageData = qvariant_cast<QImage>(mimeData->imageData());
|
||||
m_plainText = false;
|
||||
// Round up when dividing pixel size into character cell size
|
||||
m_clipboardDataHeight = (imageData.height() + 2) / 3;
|
||||
m_clipboardDataWidth = (imageData.width() + 1) / 2;
|
||||
|
||||
// Format_MonoLSB reverses the bits which makes them easier to shuffle into sixels
|
||||
if (imageData.depth() == 1)
|
||||
imageData.convertTo(QImage::Format_MonoLSB);
|
||||
else
|
||||
// Only pure black and white images convert reliably this way...
|
||||
imageData = imageData.convertToFormat(QImage::Format_MonoLSB, QVector<QRgb>{0x000000ff, 0xffffffff});
|
||||
|
||||
for (int r=0; r<m_clipboardDataHeight; r++)
|
||||
m_pastingCharacters.append(QByteArray(m_clipboardDataWidth, 0x00));
|
||||
|
||||
// Directly read the pixel-bits and convert them to sixels with some funky bit manipulation
|
||||
for (int y=0; y<imageData.height(); y++) {
|
||||
const unsigned char *bytePointer = imageData.constScanLine(y);
|
||||
// Three rows of sixels per character cell
|
||||
const int r = y / 3;
|
||||
// Where to shuffle the bits into the top, middle or bottom row of sixels
|
||||
// Yes it does put the bottom right sixel into bit 5 instead of bit 6;
|
||||
// this gets remedied further on
|
||||
const int yShift = (y % 3) * 2;
|
||||
// The loop does eight horizontal pixels into four character cells at a time
|
||||
for (int x=0; x<imageData.width(); x+=8) {
|
||||
const unsigned char byteScanned = *bytePointer;
|
||||
const int c = x / 2;
|
||||
|
||||
m_pastingCharacters[r][c] = m_pastingCharacters[r][c] | ((byteScanned & 0x03) << yShift);
|
||||
// Since we're doing four character cells at a time, we need to exit the loop
|
||||
// early before we go out of bounds.
|
||||
// Yes it does leave an undefined last column of sixels from images that are an
|
||||
// odd numbered number of pixels wide; this gets remedied further on
|
||||
if (x + 2 >= imageData.width())
|
||||
continue;
|
||||
m_pastingCharacters[r][c+1] = m_pastingCharacters[r][c+1] | (((byteScanned >> 2) & 0x03) << yShift);
|
||||
if (x + 4 >= imageData.width())
|
||||
continue;
|
||||
m_pastingCharacters[r][c+2] = m_pastingCharacters[r][c+2] | (((byteScanned >> 4) & 0x03) << yShift);
|
||||
if (x + 6 >= imageData.width())
|
||||
continue;
|
||||
m_pastingCharacters[r][c+3] = m_pastingCharacters[r][c+3] | (((byteScanned >> 6) & 0x03) << yShift);
|
||||
|
||||
bytePointer++;
|
||||
}
|
||||
}
|
||||
|
||||
for (int r=0; r<m_clipboardDataHeight; r++) {
|
||||
for (int c=0; c<m_clipboardDataWidth; c++)
|
||||
if (m_pastingCharacters.at(r).at(c) & 0x20)
|
||||
// If bit 5 was set, correct this to bit 6
|
||||
// but we keep bit 5 set as all mosaic characters have bit 5 set
|
||||
m_pastingCharacters[r][c] = m_pastingCharacters.at(r).at(c) | 0x40;
|
||||
else
|
||||
// Set bit 5 to have it recognised as a mosaic character
|
||||
m_pastingCharacters[r][c] = m_pastingCharacters.at(r).at(c) | 0x20;
|
||||
// If image was an odd numbered width, neutralise the undefined sixels
|
||||
// on the right half
|
||||
if (imageData.width() & 0x01)
|
||||
m_pastingCharacters[r][m_clipboardDataWidth-1] = m_pastingCharacters.at(r).at(m_clipboardDataWidth-1) & 0x35;
|
||||
}
|
||||
|
||||
if (!m_selectionActive) {
|
||||
m_pasteBottomRow = m_row + m_clipboardDataHeight - 1;
|
||||
m_pasteRightColumn = m_column + m_clipboardDataWidth - 1;
|
||||
}
|
||||
}
|
||||
|
||||
if (m_clipboardDataWidth == 0 || m_clipboardDataHeight == 0)
|
||||
return;
|
||||
|
||||
m_oldCharacters = storeCharacters(m_pasteTopRow, m_pasteLeftColumn, m_pasteBottomRow, m_pasteRightColumn);
|
||||
|
||||
setText(QObject::tr("paste"));
|
||||
}
|
||||
|
||||
void PasteCommand::redo()
|
||||
{
|
||||
if (m_clipboardDataWidth == 0 || m_clipboardDataHeight == 0)
|
||||
return;
|
||||
|
||||
m_teletextDocument->selectSubPageIndex(m_subPageIndex);
|
||||
|
||||
int arrayR = 0;
|
||||
int arrayC;
|
||||
|
||||
for (int r=m_pasteTopRow; r<=m_pasteBottomRow; r++) {
|
||||
arrayC = 0;
|
||||
for (int c=m_pasteLeftColumn; c<=m_pasteRightColumn; c++)
|
||||
// Guard against size of pasted block going beyond last line or column
|
||||
if (r < 25 && c < 40) {
|
||||
// Check for 0xff bytes using "-1"
|
||||
// gcc complains about "comparision always true due to limited range"
|
||||
if (m_pastingCharacters.at(arrayR).at(arrayC) != -1)
|
||||
m_teletextDocument->currentSubPage()->setCharacter(r, c, m_pastingCharacters.at(arrayR).at(arrayC));
|
||||
|
||||
arrayC++;
|
||||
|
||||
// If paste area is wider than clipboard data, repeat the pattern
|
||||
// if it wasn't plain text
|
||||
if (arrayC == m_clipboardDataWidth) {
|
||||
if (!m_plainText)
|
||||
arrayC = 0;
|
||||
else
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
arrayR++;
|
||||
// If paste area is taller than clipboard data, repeat the pattern
|
||||
// if it wasn't plain text
|
||||
if (arrayR == m_clipboardDataHeight) {
|
||||
if (!m_plainText)
|
||||
arrayR = 0;
|
||||
else
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
emit m_teletextDocument->contentsChanged();
|
||||
|
||||
if (m_selectionActive) {
|
||||
m_teletextDocument->setSelectionCorner(m_selectionCornerRow, m_selectionCornerColumn);
|
||||
m_teletextDocument->moveCursor(m_row, m_column, true);
|
||||
} else {
|
||||
m_teletextDocument->moveCursor(m_row, qMin(m_column+m_clipboardDataWidth-1, 39));
|
||||
m_teletextDocument->cursorRight();
|
||||
}
|
||||
}
|
||||
|
||||
void PasteCommand::undo()
|
||||
{
|
||||
if (m_clipboardDataWidth == 0 || m_clipboardDataHeight == 0)
|
||||
return;
|
||||
|
||||
m_teletextDocument->selectSubPageIndex(m_subPageIndex);
|
||||
|
||||
retrieveCharacters(m_pasteTopRow, m_pasteLeftColumn, m_oldCharacters);
|
||||
|
||||
emit m_teletextDocument->contentsChanged();
|
||||
|
||||
if (!m_selectionActive)
|
||||
m_teletextDocument->moveCursor(m_row, m_column);
|
||||
}
|
||||
#endif // !QT_NO_CLIPBOARD
|
||||
|
||||
|
||||
InsertSubPageCommand::InsertSubPageCommand(TeletextDocument *teletextDocument, bool afterCurrentSubPage, bool copySubPage, QUndoCommand *parent) : LevelOneCommand(teletextDocument, parent)
|
||||
{
|
||||
m_newSubPageIndex = m_subPageIndex + afterCurrentSubPage;
|
||||
m_copySubPage = copySubPage;
|
||||
|
||||
setText(QObject::tr("insert subpage"));
|
||||
|
||||
}
|
||||
|
||||
void InsertSubPageCommand::redo()
|
||||
{
|
||||
m_teletextDocument->insertSubPage(m_newSubPageIndex, m_copySubPage);
|
||||
|
||||
m_teletextDocument->selectSubPageIndex(m_newSubPageIndex, true);
|
||||
}
|
||||
|
||||
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(qMin(m_newSubPageIndex, m_teletextDocument->numberOfSubPages()-1), true);
|
||||
}
|
||||
|
||||
|
||||
DeleteSubPageCommand::DeleteSubPageCommand(TeletextDocument *teletextDocument, QUndoCommand *parent) : LevelOneCommand(teletextDocument, parent)
|
||||
{
|
||||
setText(QObject::tr("delete subpage"));
|
||||
}
|
||||
|
||||
void DeleteSubPageCommand::redo()
|
||||
{
|
||||
m_teletextDocument->deleteSubPageToRecycle(m_subPageIndex);
|
||||
m_teletextDocument->selectSubPageIndex(qMin(m_subPageIndex, m_teletextDocument->numberOfSubPages()-1), true);
|
||||
}
|
||||
|
||||
void DeleteSubPageCommand::undo()
|
||||
{
|
||||
m_teletextDocument->unDeleteSubPageFromRecycle(m_subPageIndex);
|
||||
m_teletextDocument->selectSubPageIndex(m_subPageIndex, true);
|
||||
}
|
||||
Reference in New Issue
Block a user