Move grid from widget to scene

mainwidget.cpp

@@ -20,6 +20,7 @@
 #include <QBitmap>
 #include <QFrame>
 #include <QGraphicsItem>
+#include <QGraphicsItemGroup>
 #include <QGraphicsProxyWidget>
 #include <QGraphicsScene>
 #include <QKeyEvent>
@@ -50,7 +51,6 @@ TeletextWidget::TeletextWidget(QFrame *parent) : QFrame(parent)
 	m_pageRender.setTeletextPage(m_levelOnePage);
 	m_insertMode = false;
 	m_selectionInProgress = false;
-	m_grid = false;
 	setFocusPolicy(Qt::StrongFocus);
 	m_flashTiming = m_flashPhase = 0;
 	connect(&m_pageRender, &TeletextPageRender::flashChanged, this, &TeletextWidget::updateFlashTimer);
@@ -161,14 +161,6 @@ void TeletextWidget::toggleMix(bool mixOn)
 	update();
 }
 
-void TeletextWidget::toggleGrid(bool gridOn)
-{
-	m_grid = gridOn;
-	m_pageRender.setGrid(gridOn);
-	m_pageRender.renderPage();
-	update();
-}
-
 void TeletextWidget::setControlBit(int bitNumber, bool active)
 {
 	m_levelOnePage->setControlBit(bitNumber, active);
@@ -480,7 +472,12 @@ void TeletextWidget::focusOutEvent(QFocusEvent *event)
 
 LevelOneScene::LevelOneScene(QWidget *levelOneWidget, QObject *parent) : QGraphicsScene(parent)
 {
+	m_grid = false;
+
+	// These dimensions are scratch, setBorderDimensions will get called straight away to adjust them
 	setSceneRect(0, 0, 600, 288);
+
+	// Full screen colours
 	m_fullScreenTopRectItem = new QGraphicsRectItem(0, 0, 600, 19);
 	m_fullScreenTopRectItem->setPen(Qt::NoPen);
 	m_fullScreenTopRectItem->setBrush(QBrush(QColor(0, 0, 0)));
@@ -490,6 +487,7 @@ LevelOneScene::LevelOneScene(QWidget *levelOneWidget, QObject *parent) : QGraphi
 	m_fullScreenBottomRectItem->setBrush(QBrush(QColor(0, 0, 0)));
 	addItem(m_fullScreenBottomRectItem);
 
+	// Full row colours
 	for (int r=0; r<25; r++) {
 		m_fullRowLeftRectItem[r] = new QGraphicsRectItem(0, 19+r*10, 60, 10);
 		m_fullRowLeftRectItem[r]->setPen(Qt::NoPen);
@@ -501,16 +499,43 @@ LevelOneScene::LevelOneScene(QWidget *levelOneWidget, QObject *parent) : QGraphi
 		addItem(m_fullRowRightRectItem[r]);
 	}
 
+	// Main text widget
 	m_levelOneProxyWidget = addWidget(levelOneWidget);
 	m_levelOneProxyWidget->setPos(60, 19);
 	m_levelOneProxyWidget->setAutoFillBackground(false);
+
+	// Optional grid overlay for text widget
+	m_mainGridItemGroup = new QGraphicsItemGroup;
+	m_mainGridItemGroup->setVisible(false);
+	addItem(m_mainGridItemGroup);
+	// Additional vertical pieces of grid for side panels
+	for (int i=0; i<32; i++) {
+		m_sidePanelGridNeeded[i] = false;
+		m_sidePanelGridItemGroup[i] = new QGraphicsItemGroup;
+		m_sidePanelGridItemGroup[i]->setVisible(false);
+		addItem(m_sidePanelGridItemGroup[i]);
+	}
+	for (int r=1; r<25; r++) {
+		for (int c=0; c<40; c++) {
+			QGraphicsRectItem *gridPiece = new QGraphicsRectItem(c*12, r*10, 12, 10);
+			gridPiece->setPen(QPen(QBrush(QColor(128, 128, 128, r<24 ? 192 : 128)), 0));
+			m_mainGridItemGroup->addToGroup(gridPiece);
+		}
+
+		if (r < 24)
+			for (int c=0; c<32; c++) {
+				QGraphicsRectItem *gridPiece = new QGraphicsRectItem(0, r*10, 12, 10);
+				gridPiece->setPen(QPen(QBrush(QColor(128, 128, 128, 64)), 0));
+				m_sidePanelGridItemGroup[c]->addToGroup(gridPiece);
+			}
+	}
 }
 
-void LevelOneScene::setDimensions(int sceneWidth, int sceneHeight, int widgetWidth)
+void LevelOneScene::setBorderDimensions(int sceneWidth, int sceneHeight, int widgetWidth, int leftSidePanelColumns, int rightSidePanelColumns)
 {
 	setSceneRect(0, 0, sceneWidth, sceneHeight);
 
-	// Assume widget height is always 250
+	// Assume text widget height is always 250
 	int topBottomBorders = (sceneHeight-250) / 2;
 	// Ideally we'd use m_levelOneProxyWidget->size() to discover the widget width ourselves
 	// but this causes a stubborn segfault, so we have to receive the widgetWidth as a parameter
@@ -518,15 +543,48 @@ void LevelOneScene::setDimensions(int sceneWidth, int sceneHeight, int widgetWid
 
 	m_levelOneProxyWidget->setPos(leftRightBorders, topBottomBorders);
 
+	// Position grid to cover central 40 columns
+	m_mainGridItemGroup->setPos(leftRightBorders + leftSidePanelColumns*12, topBottomBorders);
+	// Grid for right side panel
+	for (int c=0; c<16; c++)
+		if (rightSidePanelColumns > c) {
+			m_sidePanelGridItemGroup[c]->setPos(leftRightBorders + leftSidePanelColumns*12 + 480 + c*12, topBottomBorders);
+			m_sidePanelGridItemGroup[c]->setVisible(m_grid);
+			m_sidePanelGridNeeded[c] = true;
+		} else {
+			m_sidePanelGridItemGroup[c]->setVisible(false);
+			m_sidePanelGridNeeded[c] = false;
+		}
+	// Grid for left side panel
+	for (int c=0; c<16; c++)
+		if (c < leftSidePanelColumns) {
+			m_sidePanelGridItemGroup[31-c]->setPos(leftRightBorders + (leftSidePanelColumns-c-1)*12, topBottomBorders);
+			m_sidePanelGridItemGroup[31-c]->setVisible(m_grid);
+			m_sidePanelGridNeeded[31-c] = true;
+		} else {
+			m_sidePanelGridItemGroup[31-c]->setVisible(false);
+			m_sidePanelGridNeeded[31-c] = false;
+		}
+
+	// Full screen colours
 	m_fullScreenTopRectItem->setRect(0, 0, sceneWidth, topBottomBorders);
 	m_fullScreenBottomRectItem->setRect(0, 250+topBottomBorders, sceneWidth, topBottomBorders);
-
+	// Full row colours
 	for (int r=0; r<25; r++) {
 		m_fullRowLeftRectItem[r]->setRect(0, topBottomBorders+r*10, leftRightBorders+1, 10);
 		m_fullRowRightRectItem[r]->setRect(sceneWidth-leftRightBorders-1, topBottomBorders+r*10, leftRightBorders+1, 10);
 	}
 }
 
+void LevelOneScene::toggleGrid(bool gridOn)
+{
+	m_grid = gridOn;
+	m_mainGridItemGroup->setVisible(gridOn);
+	for (int i=0; i<32; i++)
+		if (m_sidePanelGridNeeded[i])
+			m_sidePanelGridItemGroup[i]->setVisible(gridOn);
+}
+
 void LevelOneScene::setFullScreenColour(const QColor &newColor)
 {
 	m_fullScreenTopRectItem->setBrush(QBrush(newColor));

mainwidget.h

@@ -22,6 +22,7 @@
 
 #include <QBasicTimer>
 #include <QFrame>
+#include <QGraphicsItemGroup>
 #include <QGraphicsProxyWidget>
 #include <QGraphicsScene>
 #include <QPair>
@@ -62,7 +63,6 @@ public slots:
 	void refreshPage();
 	void toggleReveal(bool);
 	void toggleMix(bool);
-	void toggleGrid(bool);
 	void updateFlashTimer(int);
 	void refreshRow(int);
 
@@ -91,14 +91,12 @@ protected:
 private:
 	TeletextDocument* m_teletextDocument;
 	LevelOnePage* m_levelOnePage;
-	bool m_insertMode, m_grid, m_selectionInProgress;
+	bool m_insertMode, m_selectionInProgress;
 	QBasicTimer m_flashTimer;
 	int m_flashTiming, m_flashPhase;
 
 	void timerEvent(QTimerEvent *event) override;
 
-	void calculateDimensions();
-
 	QPair<int, int> mouseToRowAndColumn(const QPoint &);
 };
 
@@ -108,9 +106,10 @@ class LevelOneScene : public QGraphicsScene
 
 public:
 	LevelOneScene(QWidget *, QObject *parent = nullptr);
-	void setDimensions(int, int, int);
+	void setBorderDimensions(int, int, int, int, int);
 
 public slots:
+	void toggleGrid(bool);
 	void setFullScreenColour(const QColor &);
 	void setFullRowColour(int, const QColor &);
 
@@ -118,6 +117,8 @@ private:
 	QGraphicsRectItem *m_fullScreenTopRectItem, *m_fullScreenBottomRectItem;
 	QGraphicsRectItem *m_fullRowLeftRectItem[25], *m_fullRowRightRectItem[25];
 	QGraphicsProxyWidget *m_levelOneProxyWidget;
+	QGraphicsItemGroup *m_mainGridItemGroup, *m_sidePanelGridItemGroup[32];
+	bool m_grid, m_sidePanelGridNeeded[32];
 };
 
 #endif

mainwindow.cpp

@@ -157,13 +157,13 @@ void MainWindow::init()
 	m_paletteDockWidget = new PaletteDockWidget(m_textWidget);
 	addDockWidget(Qt::RightDockWidgetArea, m_paletteDockWidget);
 
+	m_textScene = new LevelOneScene(m_textWidget, this);
+
 	createActions();
 	createStatusBar();
 
 	readSettings();
 
-	m_textScene = new LevelOneScene(m_textWidget, this);
-
 	m_textView = new QGraphicsView(this);
 	m_textView->setScene(m_textScene);
 	m_textView->setRenderHints(QPainter::SmoothPixmapTransform);
@@ -374,7 +374,7 @@ void MainWindow::createActions()
 	gridAct->setCheckable(true);
 	gridAct->setShortcut(QKeySequence(Qt::CTRL + Qt::Key_G));
 	gridAct->setStatusTip(tr("Toggle the text grid"));
-	connect(gridAct, &QAction::toggled, m_textWidget, &TeletextWidget::toggleGrid);
+	connect(gridAct, &QAction::toggled, m_textScene, &LevelOneScene::toggleGrid);
 
 	QAction *showCodesAct = viewMenu->addAction(tr("Show codes"));
 	showCodesAct->setCheckable(true);
@@ -568,7 +568,7 @@ void MainWindow::setSceneDimensions()
 	else
 		newSceneWidth = m_textWidget->width() + leftRightBorders[m_viewBorder]*2;
 
-	m_textScene->setDimensions(newSceneWidth, 250+topBottomBorders[m_viewBorder]*2, m_textWidget->width());
+	m_textScene->setBorderDimensions(newSceneWidth, 250+topBottomBorders[m_viewBorder]*2, m_textWidget->width(), m_textWidget->pageRender()->leftSidePanelColumns(), m_textWidget->pageRender()->rightSidePanelColumns());
 	m_textView->setTransform(QTransform((1+(float)m_viewZoom/2)*aspectRatioHorizontalScaling[m_viewAspectRatio], 0, 0, 1+(float)m_viewZoom/2, 0, 0));
 }
 

render.cpp

@@ -34,7 +34,7 @@ TeletextPageRender::TeletextPageRender()
 	for (int i=0; i<6; i++)
 		m_pagePixmap[i] = new QPixmap(864, 250);
 	m_pagePixmap[0]->fill(Qt::transparent);
-	m_grid = m_mix = m_reveal = m_showCodes = false;
+	m_mix = m_reveal = m_showCodes = false;
 	m_renderLevel = 0;
 	m_flashRequired = 0;
 	m_finalFullScreenColour = 0;
@@ -92,7 +92,6 @@ void TeletextPageRender::setRenderLevel(int newRenderLevel)
 	renderPage();
 }
 
-void TeletextPageRender::setGrid(bool newGrid) { m_grid = newGrid; }
 void TeletextPageRender::setShowCodes(bool newShowCodes)
 {
 	m_showCodes = newShowCodes;
@@ -360,12 +359,6 @@ void TeletextPageRender::renderPage(int r)
 			else
 				pixmapPainter.drawRect(c*12, r*10+18, charWidth-1, 1);
 		}
-
-		if (m_grid) {
-			pixmapPainter.setPen(QColor(128, 128, 128, (c <= 39) ? 192 : 64));
-			pixmapPainter.drawRect(c*12, r*10, 11, 9);
-		}
-
 	};
 
 	pixmapPainter.begin(m_pagePixmap[0]);

render.h

@@ -217,7 +217,7 @@ protected:
 	int m_finalFullScreenColour, m_renderLevel;
 	QColor m_finalFullScreenQColor;
 	int m_leftSidePanelColumns, m_rightSidePanelColumns;
-	bool m_reveal, m_mix, m_grid, m_showCodes;
+	bool m_reveal, m_mix, m_showCodes;
 	Level1Layer m_level1Layer;
 	std::vector<TextLayer *> m_textLayer;
 	const int m_foregroundRemap[8] = { 0,  0,  0,  8,  8, 16, 16, 16 };