From: Joel Holdsworth Date: Sun, 28 Jun 2015 09:23:29 +0000 (+0100) Subject: View: Update signals without destroying layout X-Git-Tag: pulseview-0.3.0~180 X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=cf124e472f9b5be7f85ecf708fe5290d6a6d1c9e;p=pulseview.git View: Update signals without destroying layout This fixes bug #536 --- diff --git a/pv/view/view.cpp b/pv/view/view.cpp index f7f9834d..2ae0a714 100644 --- a/pv/view/view.cpp +++ b/pv/view/view.cpp @@ -24,9 +24,11 @@ #include +#include #include #include #include +#include #include #include @@ -62,6 +64,7 @@ using pv::util::format_time; using std::deque; using std::dynamic_pointer_cast; +using std::inserter; using std::list; using std::lock_guard; using std::max; @@ -69,6 +72,7 @@ using std::make_pair; using std::min; using std::pair; using std::set; +using std::set_difference; using std::shared_ptr; using std::unordered_map; using std::unordered_set; @@ -529,43 +533,67 @@ QRectF View::label_rect(const QRectF &rect) return QRectF(); } -bool View::add_channels_to_owner( - const vector< shared_ptr > &channels, - RowItemOwner *owner, int &offset, - unordered_map, shared_ptr > - &signal_map, - std::function)> filter_func) +RowItemOwner* View::find_prevalent_trace_group( + const shared_ptr &group, + const unordered_map, shared_ptr > + &signal_map) { - bool any_added = false; + assert(group); - assert(owner); + unordered_set owners; + vector owner_list; - for (const auto &channel : channels) - { + // Make a set and a list of all the owners + for (const auto &channel : group->channels()) { const auto iter = signal_map.find(channel); - if (iter == signal_map.end() || - (filter_func && !filter_func((*iter).second))) + if (iter == signal_map.end()) continue; - shared_ptr row_item = (*iter).second; - owner->add_child_item(row_item); - apply_offset(row_item, offset); - signal_map.erase(iter); + RowItemOwner *const o = (*iter).second->owner(); + owner_list.push_back(o); + owners.insert(o); + } - any_added = true; + // Iterate through the list of owners, and find the most prevalent + size_t max_prevalence = 0; + RowItemOwner *prevalent_owner = nullptr; + for (RowItemOwner *owner : owners) { + const size_t prevalence = std::count_if( + owner_list.begin(), owner_list.end(), + [&](RowItemOwner *o) { return o == owner; }); + if (prevalence > max_prevalence) { + max_prevalence = prevalence; + prevalent_owner = owner; + } } - return any_added; + return prevalent_owner; } -void View::apply_offset(shared_ptr row_item, int &offset) { - assert(row_item); - const pair extents = row_item->v_extents(); - if (row_item->enabled()) - offset += -extents.first; - row_item->force_to_v_offset(offset); - if (row_item->enabled()) - offset += extents.second; +vector< shared_ptr > View::extract_new_traces_for_channels( + const vector< shared_ptr > &channels, + const unordered_map, shared_ptr > + &signal_map, + set< shared_ptr > &add_list) +{ + vector< shared_ptr > filtered_traces; + + for (const auto &channel : channels) + { + const auto map_iter = signal_map.find(channel); + if (map_iter == signal_map.end()) + continue; + + shared_ptr trace = (*map_iter).second; + const auto list_iter = add_list.find(trace); + if (list_iter == add_list.end()) + continue; + + filtered_traces.push_back(trace); + add_list.erase(list_iter); + } + + return filtered_traces; } bool View::eventFilter(QObject *object, QEvent *event) @@ -667,10 +695,7 @@ void View::v_scroll_value_changed() void View::signals_changed() { - int offset = 0; - - // Populate the traces - clear_child_items(); + vector< shared_ptr > new_top_level_items; const auto device = session_.device(); if (!device) @@ -679,13 +704,34 @@ void View::signals_changed() shared_ptr sr_dev = device->device(); assert(sr_dev); - // Collect a set of signals - unordered_map, shared_ptr > - signal_map; + // Make a list of traces that are being added, and a list of traces + // that are being removed + const set> prev_traces = list_by_type(); shared_lock lock(session_.signals_mutex()); const unordered_set< shared_ptr > &sigs(session_.signals()); + set< shared_ptr > traces(sigs.begin(), sigs.end()); + +#ifdef ENABLE_DECODE + const vector< shared_ptr > decode_traces( + session().get_decode_signals()); + traces.insert(decode_traces.begin(), decode_traces.end()); +#endif + + set< shared_ptr > add_traces; + set_difference(traces.begin(), traces.end(), + prev_traces.begin(), prev_traces.end(), + inserter(add_traces, add_traces.begin())); + + set< shared_ptr > remove_traces; + set_difference(prev_traces.begin(), prev_traces.end(), + traces.begin(), traces.end(), + inserter(remove_traces, remove_traces.begin())); + + // Make a look-up table of sigrok Channels to pulseview Signals + unordered_map, shared_ptr > + signal_map; for (const shared_ptr &sig : sigs) signal_map[sig->channel()] = sig; @@ -697,46 +743,80 @@ void View::signals_changed() if (group->channels().size() <= 1) continue; - shared_ptr trace_group(new TraceGroup()); - int child_offset = 0; - if (add_channels_to_owner(group->channels(), - trace_group.get(), child_offset, signal_map)) - { - add_child_item(trace_group); - apply_offset(trace_group, offset); - } - } + // Find best trace group to add to + RowItemOwner *owner = find_prevalent_trace_group( + group, signal_map); - // Add the remaining logic channels - shared_ptr logic_trace_group(new TraceGroup()); - int child_offset = 0; + // If there is no trace group, create one + shared_ptr new_trace_group; + if (!owner) { + new_trace_group.reset(new TraceGroup()); + owner = new_trace_group.get(); + } - if (add_channels_to_owner(sr_dev->channels(), - logic_trace_group.get(), child_offset, signal_map, - [](shared_ptr r) -> bool { - return dynamic_pointer_cast(r) != nullptr; - })) + // Extract traces for the trace group, removing them from + // the add list + const vector< shared_ptr > new_traces_in_group = + extract_new_traces_for_channels(group->channels(), + signal_map, add_traces); + + // Add the traces to the group + const pair prev_v_extents = owner->v_extents(); + int offset = prev_v_extents.second - prev_v_extents.first; + for (shared_ptr trace : new_traces_in_group) { + assert(trace); + owner->add_child_item(trace); + + const pair extents = trace->v_extents(); + if (trace->enabled()) + offset += -extents.first; + trace->force_to_v_offset(offset); + if (trace->enabled()) + offset += extents.second; + } - { - add_child_item(logic_trace_group); - apply_offset(logic_trace_group, offset); + // If this is a new group, enqueue it in the new top level + // items list + if (!new_traces_in_group.empty() && new_trace_group) + new_top_level_items.push_back(new_trace_group); } - // Add the remaining channels - add_channels_to_owner(sr_dev->channels(), this, offset, signal_map); - assert(signal_map.empty()); + // Enqueue the remaining channels as free ungrouped traces + const vector< shared_ptr > new_top_level_signals = + extract_new_traces_for_channels(sr_dev->channels(), + signal_map, add_traces); + new_top_level_items.insert(new_top_level_items.end(), + new_top_level_signals.begin(), new_top_level_signals.end()); + + // Enqueue any remaining traces i.e. decode traces + new_top_level_items.insert(new_top_level_items.end(), + add_traces.begin(), add_traces.end()); + + // Remove any removed traces + for (shared_ptr trace : remove_traces) { + RowItemOwner *const owner = trace->owner(); + assert(owner); + owner->remove_child_item(trace); + } - // Add decode signals -#ifdef ENABLE_DECODE - const vector< shared_ptr > decode_sigs( - session().get_decode_signals()); - for (auto s : decode_sigs) { - add_child_item(s); - apply_offset(s, offset); + // Add and position the pending top levels items + for (auto item : new_top_level_items) { + add_child_item(item); + + // Position the item after the last present item + int offset = v_extents().second; + const pair extents = item->v_extents(); + if (item->enabled()) + offset += -extents.first; + item->force_to_v_offset(offset); + if (item->enabled()) + offset += extents.second; } -#endif update_layout(); + + header_->update(); + viewport_->update(); } void View::data_updated() diff --git a/pv/view/view.hpp b/pv/view/view.hpp index e4d0ebad..3e0a3471 100644 --- a/pv/view/view.hpp +++ b/pv/view/view.hpp @@ -39,6 +39,10 @@ #include "flag.hpp" #include "rowitemowner.hpp" +namespace sigrok { +class ChannelGroup; +} + namespace pv { class Session; @@ -48,6 +52,7 @@ namespace view { class CursorHeader; class Header; class Ruler; +class Trace; class Viewport; class View : public QAbstractScrollArea, public RowItemOwner { @@ -231,16 +236,17 @@ private: */ QRectF label_rect(const QRectF &rect); - static bool add_channels_to_owner( + RowItemOwner* find_prevalent_trace_group( + const std::shared_ptr &group, + const std::unordered_map, + std::shared_ptr > &signal_map); + + static std::vector< std::shared_ptr > + extract_new_traces_for_channels( const std::vector< std::shared_ptr > &channels, - RowItemOwner *owner, int &offset, - std::unordered_map, + const std::unordered_map, std::shared_ptr > &signal_map, - std::function)> filter_func = - std::function)>()); - - static void apply_offset( - std::shared_ptr row_item, int &offset); + std::set< std::shared_ptr > &add_list); private: bool eventFilter(QObject *object, QEvent *event);