X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Fview.cpp;h=f1486ad9c4cf733dfa8b170c6b1827edcf609621;hp=dc545babf4d0147f87d6519498c6ea314339dfe1;hb=4cc2e925cf5056bc11514cc44da820eada72ce56;hpb=c063290ac7189bdd15221450f598504f43286b43 diff --git a/pv/view/view.cpp b/pv/view/view.cpp index dc545bab..f1486ad9 100644 --- a/pv/view/view.cpp +++ b/pv/view/view.cpp @@ -36,11 +36,11 @@ #include #include -#include #include #include #include #include +#include #include @@ -54,11 +54,11 @@ #include "view.hpp" #include "viewport.hpp" -#include "pv/session.hpp" -#include "pv/globalsettings.hpp" -#include "pv/devices/device.hpp" #include "pv/data/logic.hpp" #include "pv/data/logicsegment.hpp" +#include "pv/devices/device.hpp" +#include "pv/globalsettings.hpp" +#include "pv/session.hpp" #include "pv/util.hpp" #ifdef ENABLE_DECODE @@ -96,22 +96,16 @@ const Timestamp View::MaxScale("1e9"); const Timestamp View::MinScale("1e-12"); const int View::MaxScrollValue = INT_MAX / 2; -const int View::MaxViewAutoUpdateRate = 25; // No more than 25 Hz with sticky scrolling const int View::ScaleUnits[3] = {1, 2, 5}; -CustomAbstractScrollArea::CustomAbstractScrollArea(QWidget *parent) : +CustomScrollArea::CustomScrollArea(QWidget *parent) : QAbstractScrollArea(parent) { } -void CustomAbstractScrollArea::setViewportMargins(int left, int top, int right, int bottom) -{ - QAbstractScrollArea::setViewportMargins(left, top, right, bottom); -} - -bool CustomAbstractScrollArea::viewportEvent(QEvent *event) +bool CustomScrollArea::viewportEvent(QEvent *event) { switch (event->type()) { case QEvent::Paint: @@ -131,13 +125,11 @@ bool CustomAbstractScrollArea::viewportEvent(QEvent *event) View::View(Session &session, bool is_main_view, QWidget *parent) : ViewBase(session, is_main_view, parent), - viewport_(new Viewport(*this)), - ruler_(new Ruler(*this)), - header_(new Header(*this)), - scrollarea_(this), + splitter_(new QSplitter()), scale_(1e-3), offset_(0), updating_scroll_(false), + settings_restored_(false), sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui() always_zoom_to_fit_(false), tick_period_(0), @@ -150,15 +142,57 @@ View::View(Session &session, bool is_main_view, QWidget *parent) : trigger_markers_(), hover_point_(-1, -1), scroll_needs_defaults_(false), - saved_v_offset_(0), - size_finalized_(false) -{ + saved_v_offset_(0) +{ + QVBoxLayout *root_layout = new QVBoxLayout(this); + root_layout->setContentsMargins(0, 0, 0, 0); + root_layout->addWidget(splitter_); + + viewport_ = new Viewport(*this); + scrollarea_ = new CustomScrollArea(splitter_); + scrollarea_->setViewport(viewport_); + scrollarea_->setFrameShape(QFrame::NoFrame); + + ruler_ = new Ruler(*this); + + header_ = new Header(*this); + header_->setMinimumWidth(10); // So that the arrow tips show at least + + // We put the header into a simple layout so that we can add the top margin, + // allowing us to make it line up with the bottom of the ruler + QWidget *header_container = new QWidget(); + header_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding); + QVBoxLayout *header_layout = new QVBoxLayout(header_container); + header_layout->setContentsMargins(0, ruler_->sizeHint().height(), 0, 0); + header_layout->addWidget(header_); + + // To let the ruler and scrollarea be on the same split pane, we need a layout + QWidget *trace_container = new QWidget(); + trace_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding); + QVBoxLayout *trace_layout = new QVBoxLayout(trace_container); + trace_layout->setSpacing(0); // We don't want space between the ruler and scrollarea + trace_layout->setContentsMargins(0, 0, 0, 0); + trace_layout->addWidget(ruler_); + trace_layout->addWidget(scrollarea_); + + splitter_->addWidget(header_container); + splitter_->addWidget(trace_container); + splitter_->setHandleWidth(1); // Don't show a visible rubber band + splitter_->setCollapsible(0, false); // Prevent the header from collapsing + splitter_->setCollapsible(1, false); // Prevent the traces from collapsing + splitter_->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding); + + viewport_->installEventFilter(this); + ruler_->installEventFilter(this); + header_->installEventFilter(this); + + // Set up settings and event handlers GlobalSettings settings; coloured_bg_ = settings.value(GlobalSettings::Key_View_ColouredBG).toBool(); - connect(scrollarea_.horizontalScrollBar(), SIGNAL(valueChanged(int)), + connect(scrollarea_->horizontalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(h_scroll_value_changed(int))); - connect(scrollarea_.verticalScrollBar(), SIGNAL(valueChanged(int)), + connect(scrollarea_->verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(v_scroll_value_changed())); connect(header_, SIGNAL(selection_changed()), @@ -171,6 +205,9 @@ View::View(Session &session, bool is_main_view, QWidget *parent) : connect(ruler_, SIGNAL(selection_changed()), this, SIGNAL(selection_changed())); + connect(splitter_, SIGNAL(splitterMoved(int, int)), + this, SLOT(on_splitter_moved())); + connect(this, SIGNAL(hover_point_changed()), this, SLOT(on_hover_point_changed())); @@ -178,23 +215,6 @@ View::View(Session &session, bool is_main_view, QWidget *parent) : this, SLOT(process_sticky_events())); lazy_event_handler_.setSingleShot(true); - connect(&delayed_view_updater_, SIGNAL(timeout()), - this, SLOT(perform_delayed_view_update())); - delayed_view_updater_.setSingleShot(true); - delayed_view_updater_.setInterval(1000 / MaxViewAutoUpdateRate); - - /* To let the scroll area fill up the parent QWidget (this), we need a layout */ - QHBoxLayout *layout = new QHBoxLayout(this); - setLayout(layout); - layout->setContentsMargins(0, 0, 0, 0); - layout->addWidget(&scrollarea_); - - scrollarea_.setViewport(viewport_); - - viewport_->installEventFilter(this); - ruler_->installEventFilter(this); - header_->installEventFilter(this); - // Trigger the initial event manually. The default device has signals // which were created before this object came into being signals_changed(); @@ -224,11 +244,13 @@ unordered_set< shared_ptr > View::signals() const void View::clear_signals() { + ViewBase::clear_signalbases(); signals_.clear(); } void View::add_signal(const shared_ptr signal) { + ViewBase::add_signalbase(signal->base()); signals_.insert(signal); } @@ -280,7 +302,9 @@ void View::save_settings(QSettings &settings) const { settings.setValue("scale", scale_); settings.setValue("v_offset", - scrollarea_.verticalScrollBar()->sliderPosition()); + scrollarea_->verticalScrollBar()->sliderPosition()); + + settings.setValue("splitter_state", splitter_->saveState()); stringstream ss; boost::archive::text_oarchive oa(ss); @@ -313,6 +337,9 @@ void View::restore_settings(QSettings &settings) set_offset(offset); } + if (settings.contains("splitter_state")) + splitter_->restoreState(settings.value("splitter_state").toByteArray()); + for (shared_ptr signal : signals_) { settings.beginGroup(signal->base()->internal_name()); signal->restore_settings(settings); @@ -323,8 +350,10 @@ void View::restore_settings(QSettings &settings) saved_v_offset_ = settings.value("v_offset").toInt(); set_v_offset(saved_v_offset_); scroll_needs_defaults_ = false; - // Note: see resizeEvent() for additional information + // Note: see eventFilter() for additional information } + + settings_restored_ = true; } vector< shared_ptr > View::time_items() const @@ -350,7 +379,7 @@ void View::set_scale(double scale) { if (scale_ != scale) { scale_ = scale; - Q_EMIT scale_changed(); + scale_changed(); } } @@ -363,18 +392,18 @@ void View::set_offset(const pv::util::Timestamp& offset) { if (offset_ != offset) { offset_ = offset; - Q_EMIT offset_changed(); + offset_changed(); } } int View::owner_visual_v_offset() const { - return -scrollarea_.verticalScrollBar()->sliderPosition(); + return -scrollarea_->verticalScrollBar()->sliderPosition(); } void View::set_v_offset(int offset) { - scrollarea_.verticalScrollBar()->setSliderPosition(offset); + scrollarea_->verticalScrollBar()->setSliderPosition(offset); header_->update(); viewport_->update(); } @@ -393,7 +422,7 @@ void View::set_tick_prefix(pv::util::SIPrefix tick_prefix) { if (tick_prefix_ != tick_prefix) { tick_prefix_ = tick_prefix; - Q_EMIT tick_prefix_changed(); + tick_prefix_changed(); } } @@ -406,7 +435,7 @@ void View::set_tick_precision(unsigned tick_precision) { if (tick_precision_ != tick_precision) { tick_precision_ = tick_precision; - Q_EMIT tick_precision_changed(); + tick_precision_changed(); } } @@ -419,7 +448,7 @@ void View::set_tick_period(const pv::util::Timestamp& tick_period) { if (tick_period_ != tick_period) { tick_period_ = tick_period; - Q_EMIT tick_period_changed(); + tick_period_changed(); } } @@ -432,7 +461,7 @@ void View::set_time_unit(pv::util::TimeUnit time_unit) { if (time_unit_ != time_unit) { time_unit_ = time_unit; - Q_EMIT time_unit_changed(); + time_unit_changed(); } } @@ -561,33 +590,24 @@ void View::enable_show_sampling_points(bool state) viewport_->update(); } -void View::enable_coloured_bg(bool state) +void View::enable_show_analog_minor_grid(bool state) { - const vector> items( - list_by_type()); - - for (shared_ptr i : items) { - // Can't cast to Trace because it's abstract, so we need to - // check for any derived classes individually - - shared_ptr a = dynamic_pointer_cast(i); - if (a) - a->set_coloured_bg(state); - - shared_ptr l = dynamic_pointer_cast(i); - if (l) - l->set_coloured_bg(state); + (void)state; -#ifdef ENABLE_DECODE - shared_ptr d = dynamic_pointer_cast(i); - if (d) - d->set_coloured_bg(state); -#endif - } + viewport_->update(); +} +void View::enable_coloured_bg(bool state) +{ + coloured_bg_ = state; viewport_->update(); } +bool View::coloured_bg() const +{ + return coloured_bg_; +} + bool View::cursors_shown() const { return show_cursors_; @@ -664,12 +684,6 @@ void View::restack_all_trace_tree_items() for (auto &o : sorted_owners) o->restack_items(); - // Re-assign background colors - bool next_bgcolour_state = false; - - for (auto &o : sorted_owners) - next_bgcolour_state = o->reassign_bgcolour_states(next_bgcolour_state); - // Animate the items to their destination for (const auto &i : items) i->animate_to_layout_v_offset(); @@ -766,11 +780,35 @@ void View::calculate_tick_spacing() set_tick_precision(tick_precision); } +void View::adjust_top_margin() +{ + assert(viewport_); + + const QSize areaSize = viewport_->size(); + + const pair extents = v_extents(); + const int top_margin = owner_visual_v_offset() + extents.first; + const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second; + + // Do we have empty space at the top while the last trace goes out of screen? + if ((top_margin > 0) && (trace_bottom > areaSize.height())) { + const int trace_height = extents.second - extents.first; + + // Center everything vertically if there is enough space + if (areaSize.height() >= trace_height) + set_v_offset(extents.first - + ((areaSize.height() - trace_height) / 2)); + else + // Remove the top margin to make as many traces fit on screen as possible + set_v_offset(extents.first); + } +} + void View::update_scroll() { assert(viewport_); - QScrollBar *hscrollbar = scrollarea_.horizontalScrollBar(); - QScrollBar *vscrollbar = scrollarea_.verticalScrollBar(); + QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar(); + QScrollBar *vscrollbar = scrollarea_->verticalScrollBar(); const QSize areaSize = viewport_->size(); @@ -815,7 +853,7 @@ void View::update_scroll() void View::reset_scroll() { - scrollarea_.verticalScrollBar()->setRange(0, 0); + scrollarea_->verticalScrollBar()->setRange(0, 0); } void View::set_scroll_default() @@ -835,22 +873,41 @@ void View::set_scroll_default() else // Put the first trace at the top, letting the bottom ones overflow set_v_offset(extents.first); +} + +bool View::header_was_shrunk() const +{ + const int header_pane_width = splitter_->sizes().front(); + const int header_width = header_->extended_size_hint().width(); + + // Allow for a slight margin of error so that we also accept + // slight differences when e.g. a label name change increased + // the overall width + return (header_pane_width < (header_width - 10)); +} + +void View::expand_header_to_fit() +{ + int splitter_area_width = 0; + for (int w : splitter_->sizes()) + splitter_area_width += w; - // If we're not sure whether setting the defaults worked as - // the window wasn't set up entirely yet, we want to be called - // again later to make sure - scroll_needs_defaults_ = !size_finalized_; + // Workaround for when the header needs resizing but the view + // isn't visible yet and thus splitter_->sizes() returns (0, 0) + if (splitter_area_width == 0) { + QTimer::singleShot(50, this, SLOT(on_repeat_splitter_expansion())); + return; + } + + // Make sure the header has enough horizontal space to show all labels fully + QList pane_sizes; + pane_sizes.push_back(header_->extended_size_hint().width()); + pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width()); + splitter_->setSizes(pane_sizes); } void View::update_layout() { - scrollarea_.setViewportMargins( - header_->sizeHint().width() - Header::BaselineOffset, - ruler_->sizeHint().height(), 0, 0); - ruler_->setGeometry(viewport_->x(), 0, - viewport_->width(), ruler_->extended_size_hint().height()); - header_->setGeometry(0, viewport_->y(), - header_->extended_size_hint().width(), viewport_->height()); update_scroll(); } @@ -955,35 +1012,38 @@ bool View::eventFilter(QObject *object, QEvent *event) } else if (type == QEvent::Leave) { hover_point_ = QPoint(-1, -1); hover_point_changed(); + } else if (type == QEvent::Show) { + + // This is somewhat of a hack, unfortunately. We cannot use + // set_v_offset() from within restore_settings() as the view + // at that point is neither visible nor properly sized. + // This is the least intrusive workaround I could come up + // with: set the vertical offset (or scroll defaults) when + // the view is shown, which happens after all widgets were + // resized to their final sizes. + update_layout(); + + if (scroll_needs_defaults_) { + set_scroll_default(); + scroll_needs_defaults_ = false; + } + + if (saved_v_offset_) { + set_v_offset(saved_v_offset_); + saved_v_offset_ = 0; + } } return QObject::eventFilter(object, event); } -void View::resizeEvent(QResizeEvent*) +void View::resizeEvent(QResizeEvent* event) { - update_layout(); - - // This is somewhat of a hack, unfortunately. We cannot use - // set_v_offset() from within restore_settings() as the view - // at that point is neither visible nor properly sized. - // This is the least intrusive workaround I could come up - // with: set the vertical offset (or scroll defaults) when - // the view is visible and resized to its final size. - // Resize events that are sent when the view is not visible - // must be ignored as they have wrong sizes, potentially - // preventing the v offset from being set successfully. + // Only adjust the top margin if we shrunk vertically + if (event->size().height() < event->oldSize().height()) + adjust_top_margin(); - if (isVisible()) - size_finalized_ = true; - - if (size_finalized_ && saved_v_offset_) { - set_v_offset(saved_v_offset_); - saved_v_offset_ = 0; - } - - if (size_finalized_ && scroll_needs_defaults_) - set_scroll_default(); + update_layout(); } void View::row_item_appearance_changed(bool label, bool content) @@ -996,8 +1056,13 @@ void View::row_item_appearance_changed(bool label, bool content) void View::time_item_appearance_changed(bool label, bool content) { - if (label) + if (label) { ruler_->update(); + + // Make sure the header pane width is updated, too + update_layout(); + } + if (content) viewport_->update(); } @@ -1007,9 +1072,30 @@ void View::extents_changed(bool horz, bool vert) sticky_events_ |= (horz ? TraceTreeItemHExtentsChanged : 0) | (vert ? TraceTreeItemVExtentsChanged : 0); + lazy_event_handler_.start(); } +void View::on_splitter_moved() +{ + // Setting the maximum width of the header widget doesn't work as + // expected because the splitter would allow the user to make the + // pane wider than that, creating empty space as a result. + // To make this work, we stricly enforce the maximum width by + // expanding the header unless the user shrunk it on purpose. + // As we're then setting the width of the header pane, we set the + // splitter to the maximum allowed position. + if (!header_was_shrunk()) + expand_header_to_fit(); +} + +void View::on_repeat_splitter_expansion() +{ + // Don't mess with the header if settings were restored in the meanwhile + if (!settings_restored_) + expand_header_to_fit(); +} + void View::h_scroll_value_changed(int value) { if (updating_scroll_) @@ -1022,7 +1108,7 @@ void View::h_scroll_value_changed(int value) sticky_scrolling_changed(false); } - const int range = scrollarea_.horizontalScrollBar()->maximum(); + const int range = scrollarea_->horizontalScrollBar()->maximum(); if (range < MaxScrollValue) set_offset(scale_ * value); else { @@ -1052,8 +1138,8 @@ void View::signals_changed() // Do we need to set the vertical scrollbar to its default position later? // We do if there are no traces, i.e. the scroll bar has no range set bool reset_scrollbar = - (scrollarea_.verticalScrollBar()->minimum() == - scrollarea_.verticalScrollBar()->maximum()); + (scrollarea_->verticalScrollBar()->minimum() == + scrollarea_->verticalScrollBar()->maximum()); if (!session_.device()) { reset_scroll(); @@ -1205,6 +1291,12 @@ void View::signals_changed() offset += extents.second; } + + if (!new_top_level_items.empty()) + // Expand the header pane because the header should become fully + // visible when new signals are added + expand_header_to_fit(); + update_layout(); header_->update(); @@ -1250,19 +1342,6 @@ void View::capture_state_updated(int state) } } -void View::data_updated() -{ - if (always_zoom_to_fit_ || sticky_scrolling_) { - if (!delayed_view_updater_.isActive()) - delayed_view_updater_.start(); - } else { - determine_time_unit(); - update_scroll(); - ruler_->update(); - viewport_->update(); - } -} - void View::perform_delayed_view_update() { if (always_zoom_to_fit_) {