+/*
+ * This file is part of the PulseView project.
+ *
+ * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <extdef.h>
+
+#include <math.h>
+
+#include "logicsignal.h"
+#include "../logicdata.h"
+#include "../logicdatasnapshot.h"
+
+using namespace boost;
+using namespace std;
+
+namespace pv {
+namespace view {
+
+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),
+ _probe_index(probe_index),
+ _data(data)
+{
+ assert(_probe_index >= 0);
+ _colour = LogicSignalColours[
+ _probe_index % countof(LogicSignalColours)];
+}
+
+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 + 0.5f;
+ const float low_offset = rect.bottom() - Margin + 0.5f;
+
+ const deque< shared_ptr<pv::LogicDataSnapshot> > &snapshots =
+ _data->get_snapshots();
+ if(snapshots.empty())
+ return;
+
+ const shared_ptr<pv::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<pv::LogicDataSnapshot::EdgePair>::const_iterator i =
+ edges.begin() + 1;
+ i != edges.end() - 1; i++) {
+ const float x = ((*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;
+}
+
+void LogicSignal::paint_caps(QPainter &p, QLineF *const lines,
+ vector< pair<int64_t, bool> > &edges, bool level,
+ double samples_per_pixel, double pixels_offset, float x_offset,
+ float y_offset)
+{
+ QLineF *line = lines;
+
+ for(vector<pv::LogicDataSnapshot::EdgePair>::const_iterator i =
+ edges.begin(); i != (edges.end() - 1); i++)
+ if((*i).second == level) {
+ *line++ = QLineF(
+ ((*i).first / samples_per_pixel -
+ pixels_offset) + x_offset, y_offset,
+ ((*(i+1)).first / samples_per_pixel -
+ pixels_offset) + x_offset, y_offset);
+ }
+
+ p.drawLines(lines, line - lines);
+}
+
+int LogicSignal::get_nominal_offset(const QRect &rect) const
+{
+ return rect.bottom() - Margin;
+}
+
+} // namespace view
+} // namespace pv
projects / pulseview.git / commitdiff