+++ /dev/null
-/*
- * 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 <QApplication>
-#include <QFontMetrics>
-#include <QMenu>
-#include <QMouseEvent>
-
-#include "ruler.hpp"
-#include "view.hpp"
-
-#include <pv/util.hpp>
-
-using namespace Qt;
-
-using std::shared_ptr;
-using std::vector;
-
-namespace pv {
-namespace view {
-
-const float Ruler::RulerHeight = 2.5f; // x Text Height
-const int Ruler::MinorTickSubdivision = 4;
-
-const float Ruler::HoverArrowSize = 0.5f; // x Text Height
-
-Ruler::Ruler(View &parent) :
- MarginWidget(parent)
-{
- setMouseTracking(true);
-
- connect(&view_, SIGNAL(hover_point_changed()),
- this, SLOT(hover_point_changed()));
-}
-
-void Ruler::clear_selection()
-{
- const vector< shared_ptr<TimeItem> > items(view_.time_items());
- for (auto &i : items)
- i->select(false);
- update();
-}
-
-QSize Ruler::sizeHint() const
-{
- const int text_height = calculate_text_height();
- return QSize(0, RulerHeight * text_height);
-}
-
-QSize Ruler::extended_size_hint() const
-{
- QRectF max_rect;
- std::vector< std::shared_ptr<TimeItem> > items(view_.time_items());
- for (auto &i : items)
- max_rect = max_rect.united(i->label_rect(QRect()));
- return QSize(0, sizeHint().height() - max_rect.top() / 2 +
- ViewItem::HighlightRadius);
-}
-
-shared_ptr<ViewItem> Ruler::get_mouse_over_item(const QPoint &pt)
-{
- const vector< shared_ptr<TimeItem> > items(view_.time_items());
- for (auto i = items.rbegin(); i != items.rend(); i++)
- if ((*i)->enabled() && (*i)->label_rect(rect()).contains(pt))
- return *i;
- return nullptr;
-}
-
-void Ruler::paintEvent(QPaintEvent*)
-{
- const int ValueMargin = 3;
-
- QPainter p(this);
- p.setRenderHint(QPainter::Antialiasing);
-
- const double tick_period = view_.tick_period();
- const unsigned int prefix = view_.tick_prefix();
-
- // Draw the tick marks
- p.setPen(palette().color(foregroundRole()));
-
- const double minor_tick_period = tick_period / MinorTickSubdivision;
- const double first_major_division =
- floor(view_.offset() / tick_period);
- const double first_minor_division =
- 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) - 1;
-
- const int text_height = calculate_text_height();
- const int ruler_height = RulerHeight * text_height;
- const int major_tick_y1 = text_height + ValueMargin * 2;
- const int minor_tick_y1 = (major_tick_y1 + ruler_height) / 2;
-
- double x;
-
- 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,
- pv::util::format_time(t, prefix));
- p.drawLine(QPointF(x, major_tick_y1),
- QPointF(x, ruler_height));
- }
- else
- {
- // Draw a minor tick
- p.drawLine(QPointF(x, minor_tick_y1),
- QPointF(x, ruler_height));
- }
-
- division++;
-
- } while (x < width());
-
- // Draw the hover mark
- draw_hover_mark(p, text_height);
-
- // The cursor labels are not drawn with the arrows exactly on the
- // bottom line of the widget, because then the selection shadow
- // would be clipped away.
- const QRect r = rect().adjusted(0, 0, 0, -ViewItem::HighlightRadius);
-
- // Draw the items
- const vector< shared_ptr<TimeItem> > items(view_.time_items());
- for (auto &i : items) {
- const bool highlight = !dragging_ &&
- i->label_rect(r).contains(mouse_point_);
- i->paint_label(p, r, highlight);
- }
-}
-
-void Ruler::mouseMoveEvent(QMouseEvent *e)
-{
- mouse_point_ = e->pos();
-
- if (!(e->buttons() & Qt::LeftButton))
- return;
-
- if ((e->pos() - mouse_down_point_).manhattanLength() <
- QApplication::startDragDistance())
- return;
-
- // Do the drag
- dragging_ = true;
-
- const QPoint delta = e->pos() - mouse_down_point_;
- const vector< shared_ptr<TimeItem> > items(view_.time_items());
- for (auto &i : items)
- if (i->dragging())
- i->drag_by(delta);
-}
-
-void Ruler::mousePressEvent(QMouseEvent *e)
-{
- if (e->buttons() & Qt::LeftButton) {
- mouse_down_point_ = e->pos();
- mouse_down_item_ = get_mouse_over_item(e->pos());
-
- clear_selection();
-
- if (mouse_down_item_) {
- mouse_down_item_->select();
- mouse_down_item_->drag();
- }
-
- selection_changed();
- }
-}
-
-void Ruler::mouseReleaseEvent(QMouseEvent *)
-{
- using pv::widgets::Popup;
-
- if (!dragging_ && mouse_down_item_)
- show_popup(mouse_down_item_);
-
- dragging_ = false;
- mouse_down_item_.reset();
-
- const vector< shared_ptr<TimeItem> > items(view_.time_items());
- for (auto &i : items)
- i->drag_release();
-}
-
-void Ruler::mouseDoubleClickEvent(QMouseEvent *e)
-{
- view_.add_flag(view_.offset() + ((double)e->x() + 0.5) * view_.scale());
-}
-
-void Ruler::contextMenuEvent(QContextMenuEvent *event)
-{
- const shared_ptr<ViewItem> r = get_mouse_over_item(mouse_point_);
- if (!r)
- return;
-
- QMenu *menu = r->create_context_menu(this);
- if (menu)
- menu->exec(event->globalPos());
-}
-
-void Ruler::keyPressEvent(QKeyEvent *e)
-{
- assert(e);
-
- if (e->key() == Qt::Key_Delete)
- {
- const vector< shared_ptr<TimeItem> > items(view_.time_items());
- for (auto &i : items)
- if (i->selected())
- i->delete_pressed();
- }
-}
-
-void Ruler::draw_hover_mark(QPainter &p, int text_height)
-{
- const int x = view_.hover_point().x();
-
- if (x == -1)
- return;
-
- p.setPen(QPen(Qt::NoPen));
- p.setBrush(QBrush(palette().color(foregroundRole())));
-
- const int b = RulerHeight * text_height;
- const float hover_arrow_size = HoverArrowSize * text_height;
- const QPointF points[] = {
- QPointF(x, b),
- QPointF(x - hover_arrow_size, b - hover_arrow_size),
- QPointF(x + hover_arrow_size, b - hover_arrow_size)
- };
- p.drawPolygon(points, countof(points));
-}
-
-int Ruler::calculate_text_height() const
-{
- return QFontMetrics(font()).ascent();
-}
-
-void Ruler::hover_point_changed()
-{
- update();
-}
-
-} // namespace view
-} // namespace pv
projects / pulseview.git / blobdiff