* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "ruler.h"
+#include "ruler.hpp"
-#include "cursor.h"
-#include "view.h"
-#include "viewport.h"
+#include "view.hpp"
+#include "pv/util.hpp"
#include <extdef.h>
-#include <assert.h>
-#include <math.h>
-#include <limits.h>
-
-#include <QMouseEvent>
-#include <QPainter>
-#include <QTextStream>
-
-using namespace std;
+using namespace Qt;
namespace pv {
namespace view {
+const int Ruler::RulerHeight = 30;
const int Ruler::MinorTickSubdivision = 4;
const int Ruler::ScaleUnits[3] = {1, 2, 5};
-const QString Ruler::SIPrefixes[9] =
- {"f", "p", "n", QChar(0x03BC), "m", "", "k", "M", "G"};
-const int Ruler::FirstSIPrefixPower = -15;
-
const int Ruler::HoverArrowSize = 5;
Ruler::Ruler(View &parent) :
- QWidget(&parent),
- _view(parent),
- _grabbed_marker(NULL)
+ MarginWidget(parent)
{
setMouseTracking(true);
- connect(&_view, SIGNAL(hover_point_changed()),
+ connect(&view_, SIGNAL(hover_point_changed()),
this, SLOT(hover_point_changed()));
}
-QString Ruler::format_time(double t, unsigned int prefix,
- unsigned int precision)
+QSize Ruler::sizeHint() const
{
- const double multiplier = pow(10.0,
- - prefix * 3 - FirstSIPrefixPower);
-
- QString s;
- QTextStream ts(&s);
- ts.setRealNumberPrecision(precision);
- ts << fixed << forcesign << (t * multiplier) <<
- SIPrefixes[prefix] << "s";
- return s;
+ return QSize(0, RulerHeight);
}
void Ruler::paintEvent(QPaintEvent*)
{
- using namespace Qt;
-
- const double SpacingIncrement = 32.0f;
- const double MinValueSpacing = 32.0f;
const int ValueMargin = 3;
QPainter p(this);
p.setRenderHint(QPainter::Antialiasing);
- double min_width = SpacingIncrement, typical_width;
- double tick_period;
- unsigned int prefix;
-
- // Find tick spacing, and number formatting that does not cause
- // value to collide.
- do
- {
- const double min_period = _view.scale() * min_width;
-
- const int order = (int)floorf(log10f(min_period));
- const double order_decimal = pow(10, order);
-
- unsigned int unit = 0;
-
- do
- {
- tick_period = order_decimal * ScaleUnits[unit++];
- } while (tick_period < min_period && unit < countof(ScaleUnits));
-
- prefix = (order - FirstSIPrefixPower) / 3;
- assert(prefix < countof(SIPrefixes));
+ std::pair<double, unsigned int> spacing =
+ calculate_tick_spacing(p, view_.scale(), view_.offset());
-
- typical_width = p.boundingRect(0, 0, INT_MAX, INT_MAX,
- AlignLeft | AlignTop, format_time(_view.offset(),
- prefix)).width() + MinValueSpacing;
-
- min_width += SpacingIncrement;
-
- } while(typical_width > tick_period / _view.scale());
+ double tick_period = spacing.first;
+ unsigned int prefix = spacing.second;
const int text_height = p.boundingRect(0, 0, INT_MAX, INT_MAX,
AlignLeft | AlignTop, "8").height();
const double minor_tick_period = tick_period / MinorTickSubdivision;
const double first_major_division =
- floor(_view.offset() / tick_period);
+ floor(view_.offset() / tick_period);
const double first_minor_division =
- ceil(_view.offset() / minor_tick_period);
+ ceil(view_.offset() / minor_tick_period);
const double t0 = first_major_division * tick_period;
int division = (int)round(first_minor_division -
- first_major_division * MinorTickSubdivision);
+ first_major_division * MinorTickSubdivision) - 1;
const int major_tick_y1 = text_height + ValueMargin * 2;
const int tick_y2 = height();
const int minor_tick_y1 = (major_tick_y1 + tick_y2) / 2;
- while (1)
- {
- const double t = t0 + division * minor_tick_period;
- const double x = (t - _view.offset()) / _view.scale();
+ double x;
- if (x >= width())
- break;
+ do {
+ const double t = t0 + division * minor_tick_period;
+ x = (t - view_.offset()) / view_.scale();
if (division % MinorTickSubdivision == 0)
{
// Draw a major tick
p.drawText(x, ValueMargin, 0, text_height,
AlignCenter | AlignTop | TextDontClip,
- format_time(t, prefix));
+ pv::util::format_time(t, prefix));
p.drawLine(QPointF(x, major_tick_y1),
QPointF(x, tick_y2));
}
}
division++;
- }
- // Draw the cursors
- draw_cursors(p, prefix);
+ } while (x < width());
// Draw the hover mark
draw_hover_mark(p);
-
- p.end();
-}
-
-void Ruler::mouseMoveEvent(QMouseEvent *e)
-{
- if (!_grabbed_marker)
- return;
-
- _grabbed_marker->set_time(_view.offset() +
- ((double)e->x() + 0.5) * _view.scale());
-}
-
-void Ruler::mousePressEvent(QMouseEvent *e)
-{
- if (e->buttons() & Qt::LeftButton) {
- _grabbed_marker = NULL;
-
- if (_view.cursors_shown()) {
- std::pair<Cursor, Cursor> &cursors =
- _view.cursors();
- if (cursors.first.get_label_rect(
- rect()).contains(e->pos()))
- _grabbed_marker = &cursors.first;
- else if (cursors.second.get_label_rect(
- rect()).contains(e->pos()))
- _grabbed_marker = &cursors.second;
- }
- }
-}
-
-void Ruler::mouseReleaseEvent(QMouseEvent *)
-{
- _grabbed_marker = NULL;
-}
-
-void Ruler::draw_cursors(QPainter &p, unsigned int prefix)
-{
- if (!_view.cursors_shown())
- return;
-
- const QRect r = rect();
- pair<Cursor, Cursor> &cursors = _view.cursors();
- cursors.first.paint_label(p, r, prefix);
- cursors.second.paint_label(p, r, prefix);
}
void Ruler::draw_hover_mark(QPainter &p)
{
- const int x = _view.hover_point().x();
+ const int x = view_.hover_point().x();
- if (x == -1 || _grabbed_marker)
+ if (x == -1)
return;
p.setPen(QPen(Qt::NoPen));
- p.setBrush(QBrush(QColor(Qt::black)));
+ p.setBrush(QBrush(palette().color(foregroundRole())));
const int b = height() - 1;
const QPointF points[] = {
update();
}
+std::pair<double, unsigned int> Ruler::calculate_tick_spacing(
+ QPainter& p, double scale, double offset)
+{
+ const double SpacingIncrement = 32.0f;
+ const double MinValueSpacing = 32.0f;
+
+ double min_width = SpacingIncrement, typical_width;
+
+ double tick_period;
+ unsigned int prefix;
+
+ do {
+ const double min_period = scale * min_width;
+
+ const int order = (int)floorf(log10f(min_period));
+ const double order_decimal = pow(10.0, order);
+
+ unsigned int unit = 0;
+
+ do {
+ tick_period = order_decimal * ScaleUnits[unit++];
+ } while (tick_period < min_period && unit < countof(ScaleUnits));
+
+ prefix = (order - pv::util::FirstSIPrefixPower) / 3;
+
+ typical_width = p.boundingRect(0, 0, INT_MAX, INT_MAX,
+ AlignLeft | AlignTop, pv::util::format_time(offset,
+ prefix)).width() + MinValueSpacing;
+
+ min_width += SpacingIncrement;
+
+ } while(typical_width > tick_period / scale);
+
+ return std::make_pair(tick_period, prefix);
+}
+
} // namespace view
} // namespace pv
projects / pulseview.git / blobdiff