Add zoom box pan ability

2 files changed, 199 insertions, 6 deletions

diff --git a/clients/tde/src/widgets/tracewidget.cpp b/clients/tde/src/widgets/tracewidget.cpp
index 5cec9eb..9902a57 100644
--- a/clients/tde/src/widgets/tracewidget.cpp
+++ b/clients/tde/src/widgets/tracewidget.cpp
@@ -370,7 +370,9 @@ void CursorData::moveNegMultiTicks() {
 
 GraticuleWidget::GraticuleWidget(TraceWidget* parent, const char* name) : TQWidget(parent, name),
 	m_base(parent),
-	m_graticulePixmap(0) {
+	m_graticulePixmap(0),
+	leftMouseDown(false),
+	middleMouseDown(false) {
 	setBackgroundMode(NoBackground);
 	setSizePolicy(TQSizePolicy(TQSizePolicy::MinimumExpanding, TQSizePolicy::MinimumExpanding));
 
@@ -453,12 +455,64 @@ void GraticuleWidget::resizeEvent(TQResizeEvent *) {
 	updateGraticule();
 }
 
-void GraticuleWidget::mousePressEvent(TQMouseEvent *) {
-	//
+void GraticuleWidget::mousePressEvent(TQMouseEvent *e) {
+	if ((e->button() == TQt::LeftButton) && (!leftMouseDown) && (!middleMouseDown)) {
+		m_prevCursorRect = m_base->zoomCursorBox();
+		if (m_base->m_zoomBoxEnabled) {
+			leftMouseDown = true;
+			m_prevDownPos = e->pos();
+		}
+	}
+	else if ((e->button() == TQt::MidButton) && (!leftMouseDown) && (!middleMouseDown)) {
+		m_prevCursorRect = m_base->zoomCursorBox();
+		if (m_base->m_zoomBoxEnabled) {
+			middleMouseDown = true;
+			m_prevDownPos = e->pos();
+		}
+	}
 }
 
-void GraticuleWidget::mouseReleaseEvent(TQMouseEvent *) {
-	//
+void GraticuleWidget::mouseReleaseEvent(TQMouseEvent *e) {
+	if (leftMouseDown) {
+		if (e->button() == TQt::LeftButton) {
+			leftMouseDown = false;
+	
+			double x1 = m_prevDownPos.x();
+			double y1 = m_prevDownPos.y();
+			double x2 = e->x();
+			double y2 = e->y();
+			if ((x1 < width()) && (y1 < height()) && (x2 < width()) && (y2 < height()) && (x1 > 0) && (y1 > 0) && (x2 > 0) && (y2 > 0)) {
+				x1 = ((x1/width())*100.0);
+				y1 = ((y1/height())*100.0);
+				x2 = ((x2/width())*100.0);
+				y2 = ((y2/height())*100.0);
+				m_base->setZoomCursorBox(TQRectF(x1, y1, x2, y2));
+			}
+			else {
+				// Reset original zoom box
+				m_base->setZoomCursorBox(m_prevCursorRect);
+			}
+		}
+	}
+	else if (middleMouseDown) {
+		if (e->button() == TQt::MidButton) {
+			middleMouseDown = false;
+
+			double x1 = m_prevDownPos.x();
+			double y1 = m_prevDownPos.y();
+			double x2 = e->x();
+			double y2 = e->y();
+			if ((x1 < width()) && (y1 < height()) && (x2 < width()) && (y2 < height()) && (x1 > 0) && (y1 > 0) && (x2 > 0) && (y2 > 0)) {
+				TQPoint diff = e->pos() - m_prevDownPos;
+				diff = TQPoint(diff.x()*(100.0/width()), diff.y()*(100.0/height()));
+				m_base->setZoomCursorBox(TQRectF(m_prevCursorRect.x()+diff.x(), m_prevCursorRect.y()+diff.y(), m_prevCursorRect.width()+diff.x(), m_prevCursorRect.height()+diff.y()));
+			}
+			else {
+				// Reset original zoom box
+				m_base->setZoomCursorBox(m_prevCursorRect);
+			}
+		}
+	}
 }
 
 void GraticuleWidget::mouseDoubleClickEvent(TQMouseEvent *) {
@@ -486,6 +540,25 @@ void GraticuleWidget::mouseMoveEvent(TQMouseEvent *e) {
 			m_base->m_traceArray[trace]->graphStatusLabelInner->setText(m_base->m_traceArray[trace]->graphStatusLabel->text());
 		}
 	}
+
+	if (leftMouseDown) {
+		double x1 = m_prevDownPos.x();
+		double y1 = m_prevDownPos.y();
+		double x2 = e->x();
+		double y2 = e->y();
+		if ((x1 < width()) && (y1 < height()) && (x2 < width()) && (y2 < height()) && (x1 > 0) && (y1 > 0) && (x2 > 0) && (y2 > 0)) {
+			x1 = ((x1/width())*100.0);
+			y1 = ((y1/height())*100.0);
+			x2 = ((x2/width())*100.0);
+			y2 = ((y2/height())*100.0);
+			m_base->setZoomCursorBox(TQRectF(x1, y1, x2, y2));
+		}
+	}
+	else if (middleMouseDown) {
+		TQPoint diff = e->pos() - m_prevDownPos;
+		diff = TQPoint(diff.x()*(100.0/width()), diff.y()*(100.0/height()));
+		m_base->setZoomCursorBox(TQRectF(m_prevCursorRect.x()+diff.x(), m_prevCursorRect.y()+diff.y(), m_prevCursorRect.width()+diff.x(), m_prevCursorRect.height()+diff.y()));
+	}
 }
 
 void GraticuleWidget::enterEvent(TQEvent *) {
@@ -602,7 +675,7 @@ void TraceWidget::updateTraceText() {
 				offsetText = TQString(" +%1").arg(prettyFormat(fabs(offset), vertical_range, m_traceArray[trace]->verticalUnits));
 			}
 		}
-		m_traceArray[trace]->paramLabel->setText(TQString("<qt><nobr>%1%2<br>%3/div%4/div<br>%5,%6<br>%7,%8</qt>").arg(m_traceArray[trace]->traceName).arg(offsetText).arg(prettyFormat(horizontal_units_per_division, horizontal_range, m_traceArray[trace]->horizontalUnits)).arg(prettyFormat(vertical_units_per_division, vertical_range, m_traceArray[trace]->verticalUnits)).arg(prettyFormat(m_traceArray[trace]->leftEdge, horizontal_range, m_traceArray[trace]->horizontalUnits)).arg(prettyFormat(m_traceArray[trace]->topEdge, vertical_range, m_traceArray[trace]->verticalUnits)).arg(prettyFormat(m_traceArray[trace]->rightEdge, horizontal_range, m_traceArray[trace]->horizontalUnits)).arg(prettyFormat(m_traceArray[trace]->bottomEdge, vertical_range, m_traceArray[trace]->verticalUnits)));
+		m_traceArray[trace]->paramLabel->setText(TQString("<qt><nobr>%1%2<br>%3/div,%4/div<br>%5,%6<br>%7,%8</qt>").arg(m_traceArray[trace]->traceName).arg(offsetText).arg(prettyFormat(horizontal_units_per_division, horizontal_range, m_traceArray[trace]->horizontalUnits)).arg(prettyFormat(vertical_units_per_division, vertical_range, m_traceArray[trace]->verticalUnits)).arg(prettyFormat(m_traceArray[trace]->leftEdge, horizontal_range, m_traceArray[trace]->horizontalUnits)).arg(prettyFormat(m_traceArray[trace]->topEdge, vertical_range, m_traceArray[trace]->verticalUnits)).arg(prettyFormat(m_traceArray[trace]->rightEdge, horizontal_range, m_traceArray[trace]->horizontalUnits)).arg(prettyFormat(m_traceArray[trace]->bottomEdge, vertical_range, m_traceArray[trace]->verticalUnits)));
 	}
 }
 
@@ -765,6 +838,8 @@ void TraceWidget::setCursorPosition(uint cursorNumber, double position) {
 
 	m_cursorArray[cursorNumber]->position = position;
 	updateCursorText();
+	m_graticuleWidget->updateGraticule();
+	m_graticuleWidget->repaint(true);
 }
 
 bool TraceWidget::cursorEnabled(uint cursorNumber) {
@@ -885,6 +960,118 @@ TQRectF TraceWidget::zoomBox() {
 	}
 }
 
+TQRectF TraceWidget::zoomCursorBox() {
+	uint i;
+
+	if ((m_cursorArray.count() < 4) || (!m_zoomBoxEnabled)) {
+		return TQRectF();
+	}
+	else {
+		// Find the first two horizontal and first two vertical cursors
+		// If two of each cannot be found, return TQRectF()
+		double horiz[2];
+		double vert[2];
+		int j = 0;
+		int k = 0;
+		for (i=0;i<m_cursorArray.count(); i++) {
+			if (m_cursorArray[i]->orientation == TQt::Horizontal) {
+				if (j<2) {
+					vert[j] = m_cursorArray[i]->position;
+					j++;
+				}
+			}
+			else {
+				if (k<2) {
+					horiz[k] = m_cursorArray[i]->position;
+					k++;
+				}
+			}
+			if ((j>1) && (k>1)) {
+				break;
+			}
+		}
+		if ((j>1) && (k>1)) {
+			return TQRectF(horiz[0], vert[0], horiz[1], vert[1]);
+		}
+		else {
+			return TQRectF();
+		}
+	}
+}
+
+void TraceWidget::setZoomCursorBox(const TQRectF rect) {
+	uint i;
+
+	TQRectF boundedRect = rect;
+
+	if (boundedRect.x() < 0.0) {
+		boundedRect.setX(0.0);
+	}
+	if (boundedRect.x() > 100.0) {
+		boundedRect.setX(100.0);
+	}
+	if (boundedRect.y() < 0.0) {
+		boundedRect.setY(0.0);
+	}
+	if (boundedRect.y() > 100.0) {
+		boundedRect.setY(100.0);
+	}
+	if (boundedRect.width() < 0.0) {
+		boundedRect.setWidth(0.0);
+	}
+	if (boundedRect.width() > 100.0) {
+		boundedRect.setWidth(100.0);
+	}
+	if (boundedRect.height() < 0.0) {
+		boundedRect.setHeight(0.0);
+	}
+	if (boundedRect.height() > 100.0) {
+		boundedRect.setHeight(100.0);
+	}
+
+	if ((m_cursorArray.count() < 4) || (!m_zoomBoxEnabled)) {
+		return;
+	}
+	else {
+		// Find the first two horizontal and first two vertical cursors
+		// If two of each cannot be found, return TQRectF()
+		CursorData* horiz[2];
+		CursorData* vert[2];
+		int j = 0;
+		int k = 0;
+		for (i=0;i<m_cursorArray.count(); i++) {
+			if (m_cursorArray[i]->orientation == TQt::Horizontal) {
+				if (j<2) {
+					vert[j] = m_cursorArray[i];
+					j++;
+				}
+			}
+			else {
+				if (k<2) {
+					horiz[k] = m_cursorArray[i];
+					k++;
+				}
+			}
+			if ((j>1) && (k>1)) {
+				break;
+			}
+		}
+		if ((j>1) && (k>1)) {
+			// Set cursors...
+			vert[0]->position = boundedRect.y();
+			vert[1]->position = boundedRect.height();
+			horiz[0]->position = boundedRect.x();
+			horiz[1]->position = boundedRect.width();
+
+			updateCursorText();
+			m_graticuleWidget->updateGraticule();
+			m_graticuleWidget->repaint(true);
+
+			return;
+		}
+	}
+}
+
 void TraceWidget::setZoomBoxEnabled(bool enabled) {
 	m_zoomBoxEnabled = enabled;
 	m_graticuleWidget->updateGraticule();
diff --git a/clients/tde/src/widgets/tracewidget.h b/clients/tde/src/widgets/tracewidget.h
index 71f883c..c8789ee 100644
--- a/clients/tde/src/widgets/tracewidget.h
+++ b/clients/tde/src/widgets/tracewidget.h
@@ -144,6 +144,10 @@ class GraticuleWidget : public TQWidget
 	private:
 		TraceWidget* m_base;
 		TQPixmap* m_graticulePixmap;
+		bool leftMouseDown;
+		bool middleMouseDown;
+		TQPoint m_prevDownPos;
+		TQRectF m_prevCursorRect;
 
 	friend class TraceWidget;
 	friend class TraceData;
@@ -192,6 +196,8 @@ class TraceWidget : public TQWidget
 
 		TQRectF zoomBox();
 		void setZoomBoxEnabled(bool enabled);
+		TQRectF zoomCursorBox();
+		void setZoomCursorBox(const TQRectF rect);
 
 		static TQString prettyFormat(double value, double rangeDetectValue, TQString baseUnits, unsigned int precision=3);