#include <QApplication>
#include <QEvent>
#include <QFontMetrics>
-#include <QHBoxLayout>
#include <QMouseEvent>
#include <QScrollBar>
+#include <QVBoxLayout>
#include <libsigrokcxx/libsigrokcxx.hpp>
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:
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),
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()),
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()));
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();
void View::clear_signals()
{
+ ViewBase::clear_signalbases();
signals_.clear();
}
void View::add_signal(const shared_ptr<Signal> signal)
{
+ ViewBase::add_signalbase(signal->base());
signals_.insert(signal);
}
{
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);
set_offset(offset);
}
+ if (settings.contains("splitter_state"))
+ splitter_->restoreState(settings.value("splitter_state").toByteArray());
+
for (shared_ptr<Signal> signal : signals_) {
settings.beginGroup(signal->base()->internal_name());
signal->restore_settings(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
}
}
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();
}
set_tick_precision(tick_precision);
}
+void View::adjust_top_margin()
+{
+ assert(viewport_);
+
+ const QSize areaSize = viewport_->size();
+
+ const pair<int, int> 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();
void View::reset_scroll()
{
- scrollarea_.verticalScrollBar()->setRange(0, 0);
+ scrollarea_->verticalScrollBar()->setRange(0, 0);
}
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_fully_visible() const
+{
+ const int header_pane_width = splitter_->sizes().front();
+ const int header_width = header_->extended_size_hint().width();
- // 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_;
+ // 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::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<int> 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();
}
} 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)
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();
}
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 calling
+ update_layout();
+}
+
void View::h_scroll_value_changed(int value)
{
if (updating_scroll_)
sticky_scrolling_changed(false);
}
- const int range = scrollarea_.horizontalScrollBar()->maximum();
+ const int range = scrollarea_->horizontalScrollBar()->maximum();
if (range < MaxScrollValue)
set_offset(scale_ * value);
else {
// 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();
}
}
-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_) {
projects / pulseview.git / blobdiff