]> sigrok.org Git - pulseview.git/blobdiff - pv/view/decodetrace.cpp
pv::view::DecodeTrace: Draw annotation rows according to PD metadata.
[pulseview.git] / pv / view / decodetrace.cpp
index e582d1a8e2042d1ba4d4f2dd1046940bd8067990..8c230ad42384cc093ba094ac9bd401377997061d 100644 (file)
@@ -41,14 +41,19 @@ extern "C" {
 #include <pv/data/decode/decoder.h>
 #include <pv/data/logic.h>
 #include <pv/data/logicsnapshot.h>
+#include <pv/data/decode/annotation.h>
 #include <pv/view/logicsignal.h>
 #include <pv/view/view.h>
-#include <pv/view/decode/annotation.h>
 #include <pv/widgets/decodergroupbox.h>
 #include <pv/widgets/decodermenu.h>
 
-using namespace boost;
-using namespace std;
+using boost::dynamic_pointer_cast;
+using boost::shared_ptr;
+using std::list;
+using std::max;
+using std::map;
+using std::min;
+using std::vector;
 
 namespace pv {
 namespace view {
@@ -63,9 +68,23 @@ const QColor DecodeTrace::DecodeColours[4] = {
 const QColor DecodeTrace::ErrorBgColour = QColor(0xEF, 0x29, 0x29);
 const QColor DecodeTrace::NoDecodeColour = QColor(0x88, 0x8A, 0x85);
 
+const double DecodeTrace::EndCapWidth = 5;
+const int DecodeTrace::DrawPadding = 100;
+
+const QColor DecodeTrace::Colours[7] = {
+       QColor(0xFC, 0xE9, 0x4F),       // Light Butter
+       QColor(0xFC, 0xAF, 0x3E),       // Light Orange
+       QColor(0xE9, 0xB9, 0x6E),       // Light Chocolate
+       QColor(0x8A, 0xE2, 0x34),       // Light Green
+       QColor(0x72, 0x9F, 0xCF),       // Light Blue
+       QColor(0xAD, 0x7F, 0xA8),       // Light Plum
+       QColor(0xEF, 0x29, 0x29)        // Light Red
+};
+
 DecodeTrace::DecodeTrace(pv::SigSession &session,
        boost::shared_ptr<pv::data::DecoderStack> decoder_stack, int index) :
-       Trace(session, QString(decoder_stack->stack().front()->decoder()->name)),
+       Trace(session, QString::fromUtf8(
+               decoder_stack->stack().front()->decoder()->name)),
        _decoder_stack(decoder_stack),
        _delete_mapper(this)
 {
@@ -103,7 +122,7 @@ void DecodeTrace::paint_back(QPainter &p, int left, int right)
 
 void DecodeTrace::paint_mid(QPainter &p, int left, int right)
 {
-       using namespace pv::view::decode;
+       using pv::data::decode::Annotation;
 
        const double scale = _view->scale();
        assert(scale > 0);
@@ -136,9 +155,15 @@ void DecodeTrace::paint_mid(QPainter &p, int left, int right)
 
        assert(_decoder_stack);
        vector<Annotation> annotations(_decoder_stack->annotations());
-       BOOST_FOREACH(const Annotation &a, annotations)
-               a.paint(p, get_text_colour(), h, left, right,
-                       samples_per_pixel, pixels_offset, y);
+
+       BOOST_FOREACH(const Annotation &a, annotations) {
+               // Every annotation row is 20 pixels further down.
+               int y_ann_row_offset = a.row() * 20;
+
+               draw_annotation(a, p, get_text_colour(), h, left, right,
+                       samples_per_pixel, pixels_offset,
+                       y + y_ann_row_offset);
+       }
 
        draw_unresolved_period(p, h, left, right,
                samples_per_pixel, pixels_offset);
@@ -210,6 +235,102 @@ QMenu* DecodeTrace::create_context_menu(QWidget *parent)
        return menu;
 }
 
+void DecodeTrace::draw_annotation(const pv::data::decode::Annotation &a, QPainter &p,
+       QColor text_color, int h, int left, int right, double samples_per_pixel,
+       double pixels_offset, int y) const
+{
+       const double start = a.start_sample() / samples_per_pixel -
+               pixels_offset;
+       const double end = a.end_sample() / samples_per_pixel -
+               pixels_offset;
+       const QColor fill = Colours[(a.format() * (countof(Colours) / 2 + 1)) %
+               countof(Colours)];
+       const QColor outline(fill.darker());
+
+       if (start > right + DrawPadding || end < left - DrawPadding)
+               return;
+
+       if (a.start_sample() == a.end_sample())
+               draw_instant(a, p, fill, outline, text_color, h,
+                       start, y);
+       else
+               draw_range(a, p, fill, outline, text_color, h,
+                       start, end, y);
+}
+
+void DecodeTrace::draw_instant(const pv::data::decode::Annotation &a, QPainter &p,
+       QColor fill, QColor outline, QColor text_color, int h, double x, int y) const
+{
+       const QString text = a.annotations().empty() ?
+               QString() : a.annotations().back();
+       const double w = min(p.boundingRect(QRectF(), 0, text).width(),
+               0.0) + h;
+       const QRectF rect(x - w / 2, y - h / 2, w, h);
+
+       p.setPen(outline);
+       p.setBrush(fill);
+       p.drawRoundedRect(rect, h / 2, h / 2);
+
+       p.setPen(text_color);
+       p.drawText(rect, Qt::AlignCenter | Qt::AlignVCenter, text);
+}
+
+void DecodeTrace::draw_range(const pv::data::decode::Annotation &a, QPainter &p,
+       QColor fill, QColor outline, QColor text_color, int h, double start,
+       double end, int y) const
+{
+       const double top = y + .5 - h / 2;
+       const double bottom = y + .5 + h / 2;
+       const vector<QString> annotations = a.annotations();
+
+       p.setPen(outline);
+       p.setBrush(fill);
+
+       // If the two ends are within 1 pixel, draw a vertical line
+       if (start + 1.0 > end)
+       {
+               p.drawLine(QPointF(start, top), QPointF(start, bottom));
+               return;
+       }
+
+       const double cap_width = min((end - start) / 4, EndCapWidth);
+
+       QPointF pts[] = {
+               QPointF(start, y + .5f),
+               QPointF(start + cap_width, top),
+               QPointF(end - cap_width, top),
+               QPointF(end, y + .5f),
+               QPointF(end - cap_width, bottom),
+               QPointF(start + cap_width, bottom)
+       };
+
+       p.drawConvexPolygon(pts, countof(pts));
+
+       if (annotations.empty())
+               return;
+
+       QRectF rect(start + cap_width, y - h / 2,
+               end - start - cap_width * 2, h);
+       p.setPen(text_color);
+
+       // Try to find an annotation that will fit
+       QString best_annotation;
+       int best_width = 0;
+
+       BOOST_FOREACH(const QString &a, annotations) {
+               const int w = p.boundingRect(QRectF(), 0, a).width();
+               if (w <= rect.width() && w > best_width)
+                       best_annotation = a, best_width = w;
+       }
+
+       if (best_annotation.isEmpty())
+               best_annotation = annotations.back();
+
+       // If not ellide the last in the list
+       p.drawText(rect, Qt::AlignCenter, p.fontMetrics().elidedText(
+               best_annotation, Qt::ElideRight, rect.width()));
+}
+
 void DecodeTrace::draw_error(QPainter &p, const QString &message,
        int left, int right)
 {
@@ -294,7 +415,8 @@ void DecodeTrace::create_decoder_form(int index,
        assert(decoder);
 
        pv::widgets::DecoderGroupBox *const group =
-               new pv::widgets::DecoderGroupBox(decoder->name);
+               new pv::widgets::DecoderGroupBox(
+                       QString::fromUtf8(decoder->name));
 
        _delete_mapper.setMapping(group, index);
        connect(group, SIGNAL(delete_decoder()), &_delete_mapper, SLOT(map()));