X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=logicsignal.cpp;h=5be9b01576614eff7106e1dc8ae2ce77824b7b7f;hp=09a65afca5a32188186f9352f77e328ff00f979f;hb=b3f22de060b73f15ad3eb2dabee04a0b4f5d947e;hpb=3b18c57d8f224791481e0b768065bd4d11a3d79e

diff --git a/logicsignal.cpp b/logicsignal.cpp
index 09a65afc..5be9b015 100644
--- a/logicsignal.cpp
+++ b/logicsignal.cpp
@@ -1,5 +1,5 @@
 /*
- * This file is part of the sigrok project.
+ * This file is part of the PulseView project.
  *
  * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
  *
@@ -18,23 +18,137 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
+#include <math.h>
+
+#include "extdef.h"
+
+#include "logicdata.h"
+#include "logicdatasnapshot.h"
 #include "logicsignal.h"
 
-LogicSignal::LogicSignal(QString name, boost::shared_ptr<SignalData> data,
+using namespace boost;
+using namespace std;
+
+const float LogicSignal::Margin = 10.0f;
+const float LogicSignal::Oversampling = 2.0f;
+
+const QColor LogicSignal::EdgeColour(0x80, 0x80, 0x80);
+const QColor LogicSignal::HighColour(0x00, 0xC0, 0x00);
+const QColor LogicSignal::LowColour(0xC0, 0x00, 0x00);
+
+const QColor LogicSignal::LogicSignalColours[10] = {
+	QColor(0x16, 0x19, 0x1A),	// Black
+	QColor(0x8F, 0x52, 0x02),	// Brown
+	QColor(0xCC, 0x00, 0x00),	// Red
+	QColor(0xF5, 0x79, 0x00),	// Orange
+	QColor(0xED, 0xD4, 0x00),	// Yellow
+	QColor(0x73, 0xD2, 0x16),	// Green
+	QColor(0x34, 0x65, 0xA4),	// Blue
+	QColor(0x75, 0x50, 0x7B),	// Violet
+	QColor(0x88, 0x8A, 0x85),	// Grey
+	QColor(0xEE, 0xEE, 0xEC),	// White
+};
+
+LogicSignal::LogicSignal(QString name, shared_ptr<LogicData> data,
 	int probe_index) :
-	Signal(name, data),
+	Signal(name),
+	_data(data),
 	_probe_index(probe_index)
 {
 	assert(_probe_index >= 0);
 }
 
-void LogicSignal::paint(QGLWidget &widget, const QRect &rect,
-	uint64_t scale, int64_t offset)
+void LogicSignal::paint(QPainter &p, const QRect &rect, double scale,
+	double offset)
+{
+	QLineF *line;
+
+	vector< pair<int64_t, bool> > edges;
+
+	assert(scale > 0);
+	assert(_data);
+
+	const float high_offset = rect.top() + Margin;
+	const float low_offset = rect.bottom() - Margin;
+
+	const deque< shared_ptr<LogicDataSnapshot> > &snapshots =
+		_data->get_snapshots();
+	if(snapshots.empty())
+		return;
+
+	const shared_ptr<LogicDataSnapshot> &snapshot = snapshots.front();
+
+	const double pixels_offset = offset / scale;
+	const double samplerate = _data->get_samplerate();
+	const double start_time = _data->get_start_time();
+	const int64_t last_sample = snapshot->get_sample_count() - 1;
+	const double samples_per_pixel = samplerate * scale;
+	const double start = samplerate * (offset - start_time);
+	const double end = start + samples_per_pixel * rect.width();
+
+	snapshot->get_subsampled_edges(edges,
+		min(max((int64_t)floor(start), (int64_t)0), last_sample),
+		min(max((int64_t)ceil(end), (int64_t)0), last_sample),
+		samples_per_pixel / Oversampling, _probe_index);
+	assert(edges.size() >= 2);
+
+	// Paint the edges
+	const unsigned int edge_count = edges.size() - 2;
+	QLineF *const edge_lines = new QLineF[edge_count];
+	line = edge_lines;
+
+	for(vector<LogicDataSnapshot::EdgePair>::const_iterator i =
+			edges.begin() + 1;
+		i != edges.end() - 1; i++) {
+		const int x = (int)((*i).first / samples_per_pixel -
+			pixels_offset) + rect.left();
+		*line++ = QLineF(x, high_offset, x, low_offset);
+	}
+
+	p.setPen(EdgeColour);
+	p.drawLines(edge_lines, edge_count);
+	delete[] edge_lines;
+
+	// Paint the caps
+	const unsigned int max_cap_line_count = (edges.size() - 1);
+	QLineF *const cap_lines = new QLineF[max_cap_line_count];
+
+	p.setPen(HighColour);
+	paint_caps(p, cap_lines, edges, true, samples_per_pixel,
+		pixels_offset, rect.left(), high_offset);
+	p.setPen(LowColour);
+	paint_caps(p, cap_lines, edges, false, samples_per_pixel,
+		pixels_offset, rect.left(), low_offset);
+
+	delete[] cap_lines;
+}
+
+int LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
+	vector< pair<int64_t, bool> > &edges, bool level,
+	double samples_per_pixel, double pixels_offset, int x_offset,
+	int y_offset)
+{
+	QLineF *line = lines;
+
+	for(vector<LogicDataSnapshot::EdgePair>::const_iterator i = edges.begin();
+	    i != (edges.end() - 1); i++)
+		if((*i).second == level) {
+			*line++ = QLineF(
+				(int)((*i).first / samples_per_pixel -
+					pixels_offset) + x_offset, y_offset,
+				(int)((*(i+1)).first / samples_per_pixel -
+					pixels_offset) + x_offset, y_offset);
+		}
+
+	p.drawLines(lines, line - lines);
+}
+
+QColor LogicSignal::get_colour() const
+{
+	return LogicSignalColours[_probe_index % countof(LogicSignalColours)];
+}
+
+int LogicSignal::get_nominal_offset(const QRect &rect) const
 {
-	glColor3f(1,0,0);
-	glBegin(GL_POLYGON);
-	glVertex2f(rect.left(), rect.top());
-	glVertex2f(rect.right(), rect.top());
-	glVertex2f(rect.right(), rect.bottom());
-	glEnd();
+	return rect.bottom() - Margin;
 }