From: Soeren Apel Date: Thu, 1 Jun 2017 20:21:57 +0000 (+0200) Subject: Fix #957 and #874 by implementing the pane splitter X-Git-Tag: pulseview-0.4.0~49 X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=33094993339188a3baef302fb09eff6bf6bb6779;p=pulseview.git Fix #957 and #874 by implementing the pane splitter --- diff --git a/pv/view/view.cpp b/pv/view/view.cpp index 2fc14d2b..d9b02353 100644 --- a/pv/view/view.cpp +++ b/pv/view/view.cpp @@ -38,9 +38,9 @@ #include #include #include -#include #include #include +#include #include @@ -100,17 +100,12 @@ const int View::MaxScrollValue = INT_MAX / 2; 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: @@ -130,10 +125,7 @@ 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), @@ -151,12 +143,55 @@ View::View(Session &session, bool is_main_view, QWidget *parent) : scroll_needs_defaults_(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(15); // 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()), @@ -176,18 +211,6 @@ View::View(Session &session, bool is_main_view, QWidget *parent) : this, SLOT(process_sticky_events())); lazy_event_handler_.setSingleShot(true); - /* 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(); @@ -275,7 +298,7 @@ void View::save_settings(QSettings &settings) const { settings.setValue("scale", scale_); settings.setValue("v_offset", - scrollarea_.verticalScrollBar()->sliderPosition()); + scrollarea_->verticalScrollBar()->sliderPosition()); stringstream ss; boost::archive::text_oarchive oa(ss); @@ -364,12 +387,12 @@ void View::set_offset(const pv::util::Timestamp& offset) 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(); } @@ -773,8 +796,8 @@ void View::adjust_top_margin() 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(); @@ -819,7 +842,7 @@ void View::update_scroll() void View::reset_scroll() { - scrollarea_.verticalScrollBar()->setRange(0, 0); + scrollarea_->verticalScrollBar()->setRange(0, 0); } void View::set_scroll_default() @@ -841,15 +864,29 @@ void View::set_scroll_default() set_v_offset(extents.first); } +bool View::header_fully_visible() const +{ + const int header_pane_width = splitter_->sizes().front(); + const int header_width = header_->extended_size_hint().width(); + + return (header_pane_width >= header_width); +} + 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()); + // Only adjust pane sizes if the header hasn't been partially hidden by the user + if (header_fully_visible()) { + int splitter_area_width = 0; + for (int w : splitter_->sizes()) + splitter_area_width += w; + + // 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); + } + update_scroll(); } @@ -1025,7 +1062,7 @@ 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 { @@ -1055,8 +1092,8 @@ 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(); diff --git a/pv/view/view.hpp b/pv/view/view.hpp index 8ef8812c..8d5e60f2 100644 --- a/pv/view/view.hpp +++ b/pv/view/view.hpp @@ -29,6 +29,7 @@ #include #include +#include #include #include @@ -70,13 +71,12 @@ class Trace; class Viewport; class TriggerMarker; -class CustomAbstractScrollArea : public QAbstractScrollArea +class CustomScrollArea : public QAbstractScrollArea { Q_OBJECT public: - CustomAbstractScrollArea(QWidget *parent = nullptr); - void setViewportMargins(int left, int top, int right, int bottom); + CustomScrollArea(QWidget *parent = nullptr); bool viewportEvent(QEvent *event); }; @@ -323,6 +323,8 @@ private: void set_scroll_default(); + bool header_fully_visible() const; + void update_layout(); TraceTreeItemOwner* find_prevalent_trace_group( @@ -400,9 +402,11 @@ private Q_SLOTS: void set_time_unit(pv::util::TimeUnit time_unit); private: + CustomScrollArea *scrollarea_; Viewport *viewport_; Ruler *ruler_; Header *header_; + QSplitter *splitter_; unordered_set< shared_ptr > signals_; @@ -410,8 +414,6 @@ private: vector< shared_ptr > decode_traces_; #endif - CustomAbstractScrollArea scrollarea_; - /// The view time scale in seconds per pixel. double scale_;