#include <libsigrokdecode/libsigrokdecode.h>
}
+#include <extdef.h>
+
+#include <algorithm>
+
+#include <boost/foreach.hpp>
+
+#include <QPainter>
+
#include "annotation.h"
-using namespace boost;
using namespace std;
namespace pv {
namespace view {
namespace decode {
+const double Annotation::EndCapWidth = 5;
+const int Annotation::DrawPadding = 100;
+
+const QColor Annotation::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
+};
+
Annotation::Annotation(const srd_proto_data *const pdata) :
_start_sample(pdata->start_sample),
_end_sample(pdata->end_sample)
{
- const char *const *annotations = (char**)pdata->data;
+ assert(pdata);
+ const srd_proto_data_annotation *const pda =
+ (const srd_proto_data_annotation*)pdata->data;
+ assert(pda);
+
+ const char *const *annotations = (char**)pda->ann_text;
while(*annotations) {
_annotations.push_back(QString(*annotations));
annotations++;
}
}
+void Annotation::paint(QPainter &p, QColor text_color, int text_height,
+ int left, int right, double samples_per_pixel, double pixels_offset,
+ int y)
+{
+ const int h = (text_height * 3) / 2;
+ const double start = _start_sample / samples_per_pixel -
+ pixels_offset;
+ const double end = _end_sample / samples_per_pixel -
+ pixels_offset;
+ const QColor fill = Colours[(_format * (countof(Colours) / 2 + 1)) %
+ countof(Colours)];
+ const QColor outline(fill.darker());
+
+ if (start > right + DrawPadding || end < left - DrawPadding)
+ return;
+
+ if (_start_sample == _end_sample)
+ draw_instant(p, fill, outline, text_color, h,
+ start, y);
+ else
+ draw_range(p, fill, outline, text_color, h,
+ start, end, y);
+}
+
+void Annotation::draw_instant(QPainter &p, QColor fill, QColor outline,
+ QColor text_color, int h, double x, int y)
+{
+ const QString text = _annotations.empty() ?
+ QString() : _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 Annotation::draw_range(QPainter &p, QColor fill, QColor outline,
+ QColor text_color, int h, double start, double end, int y)
+{
+ const double cap_width = min((end - start) / 2, EndCapWidth);
+
+ QPointF pts[] = {
+ QPointF(start, y + .5f),
+ QPointF(start + cap_width, y + .5f - h / 2),
+ QPointF(end - cap_width, y + .5f - h / 2),
+ QPointF(end, y + .5f),
+ QPointF(end - cap_width, y + .5f + h / 2),
+ QPointF(start + cap_width, y + .5f + h / 2)
+ };
+
+ p.setPen(outline);
+ p.setBrush(fill);
+ 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(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()));
+}
+
} // namespace decode
} // namespace view
} // namespace pv