Tag version 0.5.5-alpha

This should fix palettes not updating when switching in and out of
Level 3.5

README.md

@@ -14,13 +14,15 @@ Features
 - Configurable zoom.
 - View teletext pages in 4:3, 16:9 pillar-box and 16:9 stretch aspect ratios.
 
-Although designed on and developed for Linux, the Qt 5 libraries are cross platform so a Windows executable can be built. A Windows executable can be found within the "Releases" link, compiled on a Linux host using [MXE](https://github.com/mxe/mxe) based on [these instructions](https://blog.8bitbuddhism.com/2018/08/22/cross-compiling-windows-applications-with-mxe/). After MXE is installed `make qtbase` should be enough to build QTeletextMaker.
+Although designed on and developed for Linux, the Qt 5 libraries are cross platform so a Windows executable can be built. A Windows executable can be found within the "Releases" link, compiled on a Linux host using [MXE](https://github.com/mxe/mxe) based on [these instructions](https://blog.8bitbuddhism.com/2018/08/22/cross-compiling-windows-applications-with-mxe/). After MXE is installed `make qtbase` should build and install the required dependencies to build QTeletextMaker.
 
 ## Building
 ### Linux
-Install the QtCore, QtGui and QtWidgets libraries and build headers, along with the qmake tool. Then type `qmake5 && make -j3` in a terminal, you can replace -j3 with the number of processor cores used for the compile process.
+Install the QtCore, QtGui and QtWidgets libraries and build headers, along with the qmake tool. Depending on how qmake is installed, type `qmake && make -j3` or `qmake5 && make -j3` in a terminal to build, you can replace -j3 with the number of processor cores used for the compile process.
 
-The above will place the qteletextmaker executable in the same directory as the source, type `./qteletextmaker` in the terminal to launch. Optionally, type `make install` afterwards to place the executable into /usr/local/bin.
+The above should place the qteletextmaker executable in the same directory as the source, type `./qteletextmaker` in the terminal to launch. Some Qt installs may place the executable into a "release" directory.
+
+Optionally, type `make install` afterwards to place the executable into /usr/local/bin.
 
 ## Current limitations
 The following X/26 enhancement triplets are not rendered by the editor, although the list is fully aware of them.

decode.cpp

@@ -68,7 +68,13 @@ void TeletextPageDecode::setLevel(int level)
 {
 	if (level == m_level)
 		return;
+
 	m_level = level;
+
+	for (int r=0; r<25; r++)
+		for (int c=0; c<72; c++)
+			m_refresh[r][c] = true;
+
 	decodePage();
 }
 

document.cpp

@@ -94,6 +94,25 @@ bool TeletextDocument::isEmpty() const
 	return true;
 }
 
+void TeletextDocument::clear()
+{
+	LevelOnePage *blankSubPage = new LevelOnePage;
+
+	m_subPages.insert(m_subPages.begin(), blankSubPage);
+
+	emit aboutToChangeSubPage();
+	m_currentSubPageIndex = 0;
+	m_clutModel->setSubPage(m_subPages[0]);
+	emit subPageSelected();
+	cancelSelection();
+	m_undoStack->clear();
+
+	for (int i=m_subPages.size()-1; i>0; i--) {
+		delete(m_subPages[i]);
+		m_subPages.erase(m_subPages.begin()+i);
+	}
+}
+
 /*
 void TeletextDocument::setPageFunction(PageFunctionEnum newPageFunction)
 {

document.h

@@ -56,6 +56,7 @@ public:
 	~TeletextDocument();
 
 	bool isEmpty() const;
+	void clear();
 
 	PageFunctionEnum pageFunction() const { return m_pageFunction; }
 //	void setPageFunction(PageFunctionEnum);

levelonepage.cpp

@@ -25,6 +25,8 @@
 
 #include "levelonepage.h"
 
+#include "x26triplets.h"
+
 LevelOnePage::LevelOnePage()
 {
 	m_enhancements.reserve(maxEnhancements());
@@ -403,17 +405,21 @@ bool LevelOnePage::isPaletteDefault(int fromColour, int toColour) const
 
 int LevelOnePage::levelRequired() const
 {
+	// X/28/4 present i.e. CLUTs 0 or 1 redefined - Level 3.5
 	if (!isPaletteDefault(0, 15))
 		return 3;
 
 	// TODO Check for X/28/1 for DCLUT for mode 1-3 DRCS characters - return 3
 
+	// Assume Level 2.5 if any X/28 page enhancements are present, otherwise assume Level 1
 	int levelSeen = (!isPaletteDefault(16,31) || m_leftSidePanelDisplayed || m_rightSidePanelDisplayed || m_defaultScreenColour !=0 || m_defaultRowColour !=0 || m_blackBackgroundSubst || m_colourTableRemap !=0 || m_defaultCharSet != 0 || m_secondCharSet != 0xf) ? 2 : 0;
 
+	// If there's no X/26 triplets, exit here as Level 1 or 2.5
 	if (m_enhancements.isEmpty())
 		return levelSeen;
 
 	for (int i=0; i<m_enhancements.size(); i++) {
+		// Font style - Level 3.5 only triplet
 		if (m_enhancements.at(i).modeExt() == 0x2e) // Font style
 			return 3;
 
@@ -426,9 +432,10 @@ int LevelOnePage::levelRequired() const
 				case 0x22: // G3 character @ Level 1.5
 				case 0x2f: // G2 character
 				case 0x30 ... 0x3f: // G0 character with diacritical
-					levelSeen = qMax(levelSeen, 1);
+					levelSeen = 1;
 					break;
 			}
+
 		if (levelSeen < 2)
 			switch (m_enhancements.at(i).modeExt()) {
 				// Check for Level 2.5 triplets
@@ -436,25 +443,26 @@ int LevelOnePage::levelRequired() const
 				case 0x01: // Full row colour
 				case 0x10 ... 0x13: // Origin Modifer and Object Invocation
 				case 0x15 ... 0x17: // Object Definition
-					// Check if Object Definition is required only at Level 3.5
-					if ((m_enhancements.at(i).address() & 0x18) == 0x10)
-						return 3;
-					else
-						levelSeen = qMax(levelSeen, 2);
-					break;
 				case 0x18: // DRCS Mode
-					// Check if DRCS is required only at Level 3.5
-					if ((m_enhancements.at(i).data() & 0x30) == 0x20)
-						return 3;
-					else
-						levelSeen = qMax(levelSeen, 2);
-					break;
 				case 0x20: // Foreground colour
 				case 0x21: // G1 character
 				case 0x23: // Background colour
 				case 0x27 ... 0x29: // Flash functions, G0 and G2 charset designation, G0 character @ Level 2.5
 				case 0x2b ... 0x2d: // G3 character @ Level 2.5, display attributes, DRCS character
-					levelSeen = qMax(levelSeen, 2);
+					levelSeen = 2;
+					break;
+			}
+
+		if (levelSeen == 2)
+			switch (m_enhancements.at(i).modeExt()) {
+				// Check for triplets with "required at Level 3.5 only" parameters
+				case 0x15 ... 0x17: // Object Definition
+					if ((m_enhancements.at(i).address() & 0x18) == 0x10)
+						return 3;
+					break;
+				case 0x18: // DRCS Mode
+					if ((m_enhancements.at(i).data() & 0x30) == 0x20)
+						return 3;
 					break;
 			}
 	}

main.cpp

@@ -30,7 +30,7 @@ int main(int argc, char *argv[])
 	QApplication::setApplicationDisplayName(QApplication::applicationName());
 	QApplication::setOrganizationName("gkmac.co.uk");
 	QApplication::setOrganizationDomain("gkmac.co.uk");
-	QApplication::setApplicationVersion("0.5.4-alpha");
+	QApplication::setApplicationVersion("0.5.5-alpha");
 	QCommandLineParser parser;
 	parser.setApplicationDescription(QApplication::applicationName());
 	parser.addHelpOption();

mainwidget.cpp

@@ -250,8 +250,8 @@ void TeletextWidget::keyPressEvent(QKeyEvent *event)
 	if (event->key() < 0x01000000) {
 		// A character-typing key was pressed
 		// Try to keymap it, if not keymapped then plain ASCII code (may be) returned
-		char mappedKeyPress = keymapping[m_pageDecode.level1CharSet(m_teletextDocument->cursorRow(), m_teletextDocument->cursorColumn())].value(event->text().at(0), *qPrintable(event->text()));
-		if (mappedKeyPress < 0x20)
+		char mappedKeyPress = keymapping[m_pageDecode.level1CharSet(m_teletextDocument->cursorRow(), m_teletextDocument->cursorColumn())].value(event->text().at(0), *qPrintable(event->text().at(0)));
+		if (mappedKeyPress >= 0x00 && mappedKeyPress <= 0x1f)
 			return;
 		// If outside ASCII map then the character can't be represented by current Level 1 character set
 		// Map it to block character so it doesn't need to be inserted-between later on
@@ -386,7 +386,7 @@ void TeletextWidget::keyPressEvent(QKeyEvent *event)
 		case Qt::Key_PageDown:
 			m_teletextDocument->selectSubPagePrevious();
 			break;
-		case Qt::Key_F5:
+		case Qt::Key_F6:
 			m_pageDecode.decodePage();
 			m_pageRender.renderPage(true);
 			update();

mainwindow.cpp

@@ -149,6 +149,34 @@ bool MainWindow::saveAs()
 	return saveFile(fileName);
 }
 
+void MainWindow::reload()
+{
+	if (m_isUntitled)
+		return;
+
+	if (!m_textWidget->document()->undoStack()->isClean()) {
+		const QMessageBox::StandardButton ret = QMessageBox::warning(this, QApplication::applicationDisplayName(), tr("The document \"%1\" has been modified.\nDo you want to discard your changes?").arg(QFileInfo(m_curFile).fileName()), QMessageBox::Discard | QMessageBox::Cancel);
+
+		if (ret != QMessageBox::Discard)
+			return;
+	} else {
+		const QMessageBox::StandardButton ret = QMessageBox::warning(this, QApplication::applicationDisplayName(), tr("Do you want to reload the document \"%1\" from disk?").arg(QFileInfo(m_curFile).fileName()), QMessageBox::Yes | QMessageBox::No);
+
+		if (ret != QMessageBox::Yes)
+			return;
+	}
+
+	int subPageIndex = m_textWidget->document()->currentSubPageIndex();
+
+	m_textWidget->document()->clear();
+	loadFile(m_curFile);
+
+	if (subPageIndex >= m_textWidget->document()->numberOfSubPages())
+		subPageIndex = m_textWidget->document()->numberOfSubPages()-1;
+
+	m_textWidget->document()->selectSubPageIndex(subPageIndex, true);
+}
+
 void MainWindow::exportPNG()
 {
 	QString exportFileName = QFileDialog::getSaveFileName(this, tr("Export PNG"), QString(), "PNG image (*.png)");
@@ -328,6 +356,11 @@ void MainWindow::createActions()
 	saveAsAct->setShortcuts(QKeySequence::SaveAs);
 	saveAsAct->setStatusTip(tr("Save the document under a new name"));
 
+	const QIcon reloadIcon = QIcon::fromTheme("document-revert");
+	QAction *reloadAct = fileMenu->addAction(reloadIcon, tr("Reload"), this, &MainWindow::reload);
+	reloadAct->setShortcuts(QKeySequence::Refresh);
+	reloadAct->setStatusTip(tr("Reload the document from disk"));
+
 	fileMenu->addSeparator();
 
 	QMenu *recentMenu = fileMenu->addMenu(tr("Recent"));

mainwindow.h

@@ -59,6 +59,7 @@ private slots:
 	void open();
 	bool save();
 	bool saveAs();
+	void reload();
 	void exportT42();
 	void exportZXNet();
 	void exportEditTF();

render.cpp

@@ -354,7 +354,9 @@ void TeletextPageRender::renderPage(bool force)
 						}
 				}
 
-				if (!force || m_decoder->cellFlashMode(r, c) == 0)
+				if (force && m_decoder->cellFlashMode(r, c) != 0)
+					m_decoder->setRefresh(r, c, true);
+				else
 					m_decoder->setRefresh(r, c, false);
 			}
 		}

x26dockwidget.cpp

@@ -623,6 +623,8 @@ X26DockWidget::X26DockWidget(TeletextWidget *parent): QDockWidget(parent)
 
 	x26Layout->addLayout(insertDeleteLayout);
 
+	disableTripletWidgets();
+
 	x26Widget->setLayout(x26Layout);
 	this->setWidget(x26Widget);
 
@@ -674,14 +676,48 @@ void X26DockWidget::rowSelected(const QModelIndex &current, const QModelIndex &p
 {
 	Q_UNUSED(previous);
 
-	updateAllRawTripletSpinBoxes(current);
-	updateAllCookedTripletWidgets(current);
+	if (current.isValid()) {
+		updateAllRawTripletSpinBoxes(current);
+		updateAllCookedTripletWidgets(current);
+	} else
+		disableTripletWidgets();
+}
+
+void X26DockWidget::disableTripletWidgets()
+{
+	m_rawTripletAddressSpinBox->setEnabled(false);
+	m_rawTripletDataSpinBox->setEnabled(false);
+	m_rawTripletModeSpinBox->setEnabled(false);
+	m_rawTripletAddressSpinBox->blockSignals(true);
+	m_rawTripletModeSpinBox->blockSignals(true);
+	m_rawTripletDataSpinBox->blockSignals(true);
+	m_rawTripletAddressSpinBox->setValue(0);
+	m_rawTripletModeSpinBox->setValue(0);
+	m_rawTripletDataSpinBox->setValue(0);
+	m_rawTripletAddressSpinBox->blockSignals(false);
+	m_rawTripletModeSpinBox->blockSignals(false);
+	m_rawTripletDataSpinBox->blockSignals(false);
+
+	m_cookedRowSpinBox->setEnabled(false);
+	m_cookedColumnSpinBox->setEnabled(false);
+	m_cookedRowSpinBox->blockSignals(true);
+	m_cookedColumnSpinBox->blockSignals(true);
+	m_cookedRowSpinBox->setValue(1);
+	m_cookedColumnSpinBox->setValue(0);
+	m_cookedRowSpinBox->blockSignals(false);
+	m_cookedColumnSpinBox->blockSignals(false);
+
+	m_cookedModePushButton->setEnabled(false);
+	m_cookedModePushButton->setText(QString());
+
+	m_tripletParameterStackedLayout->setCurrentIndex(0);
 }
 
 void X26DockWidget::updateAllCookedTripletWidgets(const QModelIndex &index)
 {
 	const int modeExt = index.model()->data(index.model()->index(index.row(), 2), Qt::EditRole).toInt();
 
+	m_cookedModePushButton->setEnabled(true);
 	m_cookedModePushButton->setText(m_x26Model->modeTripletName(modeExt));
 
 	switch (modeExt) {

x26dockwidget.h

@@ -117,6 +117,9 @@ private:
 	QPushButton *m_insertBeforePushButton, *m_insertAfterPushButton, *m_insertCopyPushButton, *m_deletePushButton;
 
 	TeletextWidget *m_parentMainWidget;
+
+	void disableTripletWidgets();
+
 };
 
 #endif

x26model.cpp

@@ -65,11 +65,19 @@ QVariant X26Model::data(const QModelIndex &index, int role) const
 		}
 
 	// Error colours from KDE Plasma Breeze (light) theme
-	if (role == Qt::ForegroundRole && triplet.error() != X26Triplet::NoError && index.column() == m_tripletErrors[triplet.error()].columnHighlight)
-		return QColor(252, 252, 252);
+	if (role == Qt::ForegroundRole) {
+		if (triplet.error() != X26Triplet::NoError && index.column() == m_tripletErrors[triplet.error()].columnHighlight)
+			return QColor(252, 252, 252);
+		else if ((index.column() == 2 && triplet.reservedMode()) || (index.column() == 3 && triplet.reservedData()))
+			return QColor(35, 38, 39);
+	}
 
-	if (role == Qt::BackgroundRole && triplet.error() != X26Triplet::NoError && index.column() == m_tripletErrors[triplet.error()].columnHighlight)
-		return QColor(218, 68, 63);
+	if (role == Qt::BackgroundRole) {
+		if (triplet.error() != X26Triplet::NoError && index.column() == m_tripletErrors[triplet.error()].columnHighlight)
+			return QColor(218, 68, 63);
+		else if ((index.column() == 2 && triplet.reservedMode()) || (index.column() == 3 && triplet.reservedData()))
+			return QColor(246, 116, 0);
+	}
 
 	if (role == Qt::ToolTipRole && triplet.error() != X26Triplet::NoError)
 		return m_tripletErrors[triplet.error()].message;

x26triplets.cpp

@@ -77,30 +77,45 @@ void X26TripletList::updateInternalData()
 	for (int i=0; i < m_list.size(); i++) {
 		triplet = &m_list[i];
 		triplet->m_error = X26Triplet::NoError;
+		triplet->m_reservedMode = false;
+		triplet->m_reservedData = false;
+
 		if (triplet->isRowTriplet()) {
 			switch (triplet->modeExt()) {
 				case 0x00: // Full screen colour
 					if (activePosition.isDeployed())
 						// TODO more specific error needed
 						triplet->m_error = X26Triplet::ActivePositionMovedUp;
+					if (triplet->m_data & 0x60)
+						triplet->m_reservedData = true;
 					break;
 				case 0x01: // Full row colour
 					if (!activePosition.setRow(triplet->addressRow()))
 						triplet->m_error = X26Triplet::ActivePositionMovedUp;
+					if ((triplet->m_data & 0x60) != 0x00 && (triplet->m_data & 0x60) != 0x60)
+						triplet->m_reservedData = true;
 					break;
 				case 0x04: // Set Active Position;
 					if (!activePosition.setRow(triplet->addressRow()))
 						triplet->m_error = X26Triplet::ActivePositionMovedUp;
-					else if (triplet->data() >= 40 || !activePosition.setColumn(triplet->data()))
+					else if (triplet->data() >= 40)
+						// FIXME data column highlighted?
+						triplet->m_reservedData = true;
+					else if (!activePosition.setColumn(triplet->data()))
 						triplet->m_error = X26Triplet::ActivePositionMovedLeft;
 					break;
 				case 0x07: // Address row 0
-					if (activePosition.isDeployed())
+					if (triplet->m_address != 63)
+						// FIXME data column highlighted?
+						triplet->m_reservedData = true;
+					else if (activePosition.isDeployed())
 						triplet->m_error = X26Triplet::ActivePositionMovedUp;
 					else {
 						activePosition.setRow(0);
 						activePosition.setColumn(8);
 					}
+					if ((triplet->m_data & 0x60) != 0x00 && (triplet->m_data & 0x60) != 0x60)
+						triplet->m_reservedData = true;
 					break;
 				case 0x10: // Origin Modifier
 					if (i == m_list.size()-1 ||
@@ -125,11 +140,45 @@ void X26TripletList::updateInternalData()
 					// otherwise the object won't appear
 					triplet->setObjectLocalIndex(i);
 					break;
+				case 0x18: // DRCS mode
+					if ((triplet->m_data & 0x30) == 0x00)
+						triplet->m_reservedData = true;
+				case 0x1f: // Termination marker
+				case 0x08 ... 0x0d: // PDC
+					break;
+				default:
+					triplet->m_reservedMode = true;
 			};
-		// Column triplet: make sure that PDC and reserved triplets don't affect the Active Position
-		} else if (triplet->modeExt() != 0x24 && triplet->modeExt() != 0x25 && triplet->modeExt() != 0x26 && triplet->modeExt() != 0x2a)
-			if (!activePosition.setColumn(triplet->addressColumn()))
-				triplet->m_error = X26Triplet::ActivePositionMovedLeft;
+		// Column triplet: all triplets modes except PDC and reserved move the Active Position
+		} else if (triplet->modeExt() == 0x24 || triplet->modeExt() == 0x25 || triplet->modeExt() == 0x2a)
+			triplet->m_reservedMode = true;
+		else if (triplet->modeExt() != 0x26 && !activePosition.setColumn(triplet->addressColumn()))
+			triplet->m_error = X26Triplet::ActivePositionMovedLeft;
+		else
+			switch (triplet->modeExt()) {
+				case 0x20: // Foreground colour
+				case 0x23: // Foreground colour
+					if (triplet->m_data & 0x60)
+						triplet->m_reservedData = true;
+					break;
+				case 0x21: // G1 mosaic character
+				case 0x22: // G3 mosaic character at level 1.5
+				case 0x29: // G0 character
+				case 0x2b: // G3 mosaic character at level >=2.5
+				case 0x2f ... 0x3f: // G2 character or G0 diacritical mark
+					if (triplet->m_data < 0x20)
+						triplet->m_reservedData = true;
+					break;
+				case 0x27: // Additional flash functions
+					if (triplet->m_data >= 0x18)
+						triplet->m_reservedData = true;
+					break;
+				case 0x2d: // DRCS character
+					if ((triplet->m_data & 0x3f) >= 48)
+						// Should really be an error?
+						triplet->m_reservedData = true;
+			}
+
 		triplet->m_activePositionRow = activePosition.row();
 		triplet->m_activePositionColumn = activePosition.column();
 	}

x26triplets.h

@@ -62,6 +62,8 @@ public:
 	int activePositionRow() const { return m_activePositionRow; }
 	int activePositionColumn() const { return m_activePositionColumn; }
 	X26TripletError error() const { return m_error; }
+	bool reservedMode() const { return m_reservedMode; }
+	bool reservedData() const { return m_reservedData; }
 
 	friend class X26TripletList;
 
@@ -70,6 +72,8 @@ private:
 	int m_activePositionRow = -1;
 	int m_activePositionColumn = -1;
 	X26TripletError m_error = NoError;
+	bool m_reservedMode = false;
+	bool m_reservedData = false;
 };
 
 class X26TripletList