#31 [Gui] Big update for arbitrary values viewer. It is now viable and can be used to inspect user metrics. Currently arbitrary values viewer is built into blocks list widget.

easy_profiler_core/chunk_allocator.h

@@ -303,9 +303,11 @@ EASY_FORCE_INLINE T unaligned_load64(const void* ptr, T* val)
 
 //////////////////////////////////////////////////////////////////////////
 
-template <uint16_t N>
+template <const uint16_t N>
 class chunk_allocator
 {
+    static_assert(N != 0, "chunk_allocator<N> N must be a positive value");
+
     struct chunk { EASY_ALIGNED(char, data[N], EASY_ALIGNMENT_SIZE); chunk* prev = nullptr; };
 
     struct chunk_list
@@ -380,8 +382,8 @@ class chunk_allocator
     };
 
     // Used in serialize(): workaround for no constexpr support in MSVC 2013.
-    EASY_STATIC_CONSTEXPR int_fast32_t MAX_CHUNK_OFFSET = N - sizeof(uint16_t);
+    EASY_STATIC_CONSTEXPR int_fast32_t MaxChunkOffset = N - sizeof(uint16_t);
-    EASY_STATIC_CONSTEXPR uint16_t N_MINUS_ONE = N - 1;
+    EASY_STATIC_CONSTEXPR uint16_t OneBeforeN = static_cast<uint16_t>(N - 1);
 
     chunk_list          m_chunks; ///< List of chunks.
     chunk*         m_markedChunk; ///< Chunk marked by last closed frame
@@ -421,7 +423,7 @@ public:
 
             // If there is enough space for at least another payload size,
             // set it to zero.
-            if (chunkOffset < N_MINUS_ONE)
+            if (chunkOffset < OneBeforeN)
                 unaligned_zero16(data + n);
 
             return data;
@@ -503,7 +505,7 @@ public:
             isMarked = (current == m_markedChunk);
             const char* data = current->data;
 
-            const int_fast32_t maxOffset = isMarked ? m_markedChunkOffset : MAX_CHUNK_OFFSET;
+            const int_fast32_t maxOffset = isMarked ? m_markedChunkOffset : MaxChunkOffset;
             int_fast32_t chunkOffset = 0; // signed int so overflow is not checked.
             auto payloadSize = unaligned_load16<uint16_t>(data);
 
@@ -555,7 +557,7 @@ public:
 
             // If there is enough space for at least another payload size,
             // set it to zero.
-            if (chunkOffset < N_MINUS_ONE)
+            if (chunkOffset < OneBeforeN)
                 unaligned_zero16(data + n);
 
             if (marked == m_chunks.last && chunkOffset > m_chunkOffset)

easy_profiler_core/thread_storage.h

@@ -95,6 +95,9 @@ public:
 EASY_CONSTEXPR uint16_t SIZEOF_BLOCK = sizeof(profiler::BaseBlockData) + 1 + sizeof(uint16_t); // SerializedBlock stores BaseBlockData + at least 1 character for name ('\0') + 2 bytes for size of serialized data
 EASY_CONSTEXPR uint16_t SIZEOF_CSWITCH = sizeof(profiler::CSwitchEvent) + 1 + sizeof(uint16_t); // SerializedCSwitch also stores additional 4 bytes to be able to save 64-bit thread_id
 
+static_assert((int)SIZEOF_BLOCK * 128 < 65536, "Chunk size for profiler::Block must be less than 65536");
+static_assert((int)SIZEOF_CSWITCH * 128 < 65536, "Chunk size for CSwitchBlock must be less than 65536");
+
 struct ThreadStorage EASY_FINAL
 {
     StackBuffer<NonscopedBlock>                                                 nonscopedBlocks;

profiler_gui/arbitrary_value_inspector.cpp

@@ -57,8 +57,10 @@
 #include <QColor>
 #include <QHeaderView>
 #include <QVBoxLayout>
+#include <QSplitter>
 #include <QResizeEvent>
 #include <QVariant>
+#include <QSettings>
 #include <list>
 #include "arbitrary_value_inspector.h"
 #include "treeview_first_column_delegate.h"
@@ -387,269 +389,504 @@ QPointF ArbitraryValuesCollection::point(const profiler::ArbitraryValue& _value)
 
 //////////////////////////////////////////////////////////////////////////
 
-EasyArbitraryValuesChartItem::EasyArbitraryValuesChartItem()
+ArbitraryValuesChartItem::ArbitraryValuesChartItem()
-    : Parent(nullptr)
+    : Parent()
+    , m_workerMaxValue(0)
+    , m_workerMinValue(0)
 {
 }
 
-EasyArbitraryValuesChartItem::~EasyArbitraryValuesChartItem()
+ArbitraryValuesChartItem::~ArbitraryValuesChartItem()
 {
 
 }
 
-void EasyArbitraryValuesChartItem::paint(QPainter* _painter, const QStyleOptionGraphicsItem*, QWidget*)
+void ArbitraryValuesChartItem::paint(QPainter* _painter, const QStyleOptionGraphicsItem*, QWidget*)
 {
-    if (m_collections.empty())
+    const auto widget = static_cast<const GraphicsSliderArea*>(scene()->parent());
-        return;
+    const auto currentScale = widget->getWindowScale();
-
+    const bool bindMode = widget->bindMode();
-    const auto& chart = *reinterpret_cast<const EasyGraphicsChart*>(scene()->parent());
+    const auto bottom = m_boundingRect.bottom();
-    const auto scale = chart.xscale();
+    const auto width = m_boundingRect.width() * currentScale;
-
-    qreal minValue = 1e300, maxValue = -1e300;
-    for (const auto& c : m_collections)
-    {
-        const auto& collection = *c.ptr;
-        if (minValue > collection.minValue())
-            minValue = collection.minValue();
-        if (maxValue < collection.maxValue())
-            maxValue = collection.maxValue();
-    }
-
-    const qreal height = std::max(maxValue - minValue, 1.);
-
-    auto r = scene()->sceneRect();
-
 
     _painter->save();
+    _painter->setTransform(QTransform::fromScale(1.0 / currentScale, 1), true);
 
-    for (const auto& c : m_collections)
+    if (!bindMode)
-    {
+        paintImage(_painter);
-        const auto& points = c.ptr->points();
-        if (points.empty())
-            continue;
-
-        if (c.selected)
-        {
-            auto pen = _painter->pen();
-            pen.setColor(QColor::fromRgba(c.color));
-            pen.setWidth(3);
-            _painter->setPen(pen);
-        }
     else
+        paintImage(_painter, currentScale, widget->minimum(), widget->maximum(), widget->value(), widget->sliderWidth());
+
+    const auto font_h = widget->fontHeight();
+    QRectF rect(0, m_boundingRect.top() - widget->margin(), width - 3, m_boundingRect.height() + widget->margins());
+    _painter->setPen(profiler_gui::TEXT_COLOR);
+    _painter->drawText(rect, Qt::AlignLeft | Qt::AlignTop, bindMode ? " Mode: Zoom" : " Mode: Overview");
+
+    if (!EASY_GLOBALS.scene.empty)
     {
-            _painter->setPen(QColor::fromRgba(c.color));
+        const auto range = bindMode ? widget->sliderWidth() : widget->range();
+        paintMouseIndicator(_painter, m_boundingRect.top(), bottom, width, m_boundingRect.height(), font_h,
+                            widget->value(), range);
     }
 
-        if (points.size() == 1)
+    _painter->setPen(Qt::darkGray);
-            _painter->drawPoint(points.front());
+    _painter->drawLine(QLineF(0, bottom, width, bottom));
-        else
+    _painter->drawLine(QLineF(0, m_boundingRect.top(), width, m_boundingRect.top()));
-        {
-            auto gety = [&r, &minValue, &maxValue, &height] (qreal y)
-            {
-                y = maxValue - y;
-                y /= height;
-                y *= r.height() - 10;
-                y += r.top() + 5;
-                return y;
-            };
-
-            if (c.chartType == ChartType::Points)
-            {
-                for (const auto& p : points)
-                    _painter->drawPoint(QPointF {p.x() * scale, gety(p.y())});
-            }
-            else
-            {
-                QPointF p1 = points.front();
-                for (int i = 1; i < points.size(); ++i)
-                {
-                    const auto& p2 = points[i];
-                    _painter->drawLine(QPointF {p1.x() * scale, gety(p1.y())}, QPointF {p2.x() * scale, gety(p2.y())});
-                    p1 = p2;
-                }
-            }
-            //_painter->drawPolyline(points.data(), static_cast<int>(points.size()));
-        }
-    }
 
     _painter->restore();
 }
 
-QRectF EasyArbitraryValuesChartItem::boundingRect() const
+void ArbitraryValuesChartItem::paintMouseIndicator(QPainter* _painter, qreal _top, qreal _bottom, qreal _width, qreal _height,
+                                                   int _font_h, qreal _visibleRegionLeft, qreal _visibleRegionWidth)
 {
-    return m_boundingRect;
+    if (_font_h == 0)
+        return;
+
+    const auto x = m_mousePos.x();
+    const auto y = m_mousePos.y();
+
+    // Horizontal
+    const bool visibleY = (_top < y && y < _bottom);
+    if (visibleY)
+    {
+        const int half_font_h = _font_h >> 1;
+        const auto value = m_minValue + ((_bottom - 2 - y) / (_height - 4)) * (m_maxValue - m_minValue);
+        const auto mouseStr = QString::number(value, 'f', 3);
+        const int textWidth = _painter->fontMetrics().width(mouseStr) + 3;
+        const QRectF rect(0, y - _font_h - 2, _width, 4 + (_font_h << 1));
+
+        _painter->setPen(Qt::blue);
+
+        qreal left = 0, right = _width;
+        const Qt::AlignmentFlag alignment = x < textWidth ? Qt::AlignRight : Qt::AlignLeft;
+
+        if (y > _bottom - half_font_h)
+        {
+            _painter->drawText(rect, alignment | Qt::AlignTop, mouseStr);
+        }
+        else if (y < _top + half_font_h)
+        {
+            _painter->drawText(rect, alignment | Qt::AlignBottom, mouseStr);
+        }
+        else
+        {
+            _painter->drawText(rect, alignment | Qt::AlignVCenter, mouseStr);
+            if (x < textWidth)
+                right = _width - textWidth;
+            else
+                left = textWidth;
+        }
+
+        _painter->drawLine(QLineF(left, y, right, y));
+    }
+
+    // Vertical
+    if (0 < x && x < m_boundingRect.width())
+    {
+        const auto value = _visibleRegionLeft + _visibleRegionWidth * x / _width;
+        const auto mouseStr = profiler_gui::timeStringReal(EASY_GLOBALS.time_units, value, 3);
+        const int textWidth = _painter->fontMetrics().width(mouseStr) + 6;
+        const int textWidthHalf = textWidth >> 1;
+
+        qreal left = x - textWidthHalf;
+        if (x < textWidthHalf)
+            left = 0;
+        else if (x > (_width - textWidthHalf))
+            left = _width - textWidth;
+
+        if (!visibleY)
+            _painter->setPen(Qt::blue);
+
+        const QRectF rect(left, _bottom + 2, textWidth, _font_h);
+        _painter->drawText(rect, Qt::AlignCenter, mouseStr);
+        _painter->drawLine(QLineF(x, _top, x, _bottom));
+    }
 }
 
-void EasyArbitraryValuesChartItem::setBoundingRect(const QRectF& _rect)
+bool ArbitraryValuesChartItem::updateImage()
 {
-    m_boundingRect = _rect;
+    if (!Parent::updateImage())
+        return false;
+
+    const auto widget = static_cast<const GraphicsSliderArea*>(scene()->parent());
+
+    m_imageScaleUpdate = widget->range() / widget->sliderWidth();
+    m_imageOriginUpdate = widget->bindMode() ? (widget->value() - widget->sliderWidth() * 3) : widget->minimum();
+
+    m_workerThread = std::thread(&This::updateImageAsync, this, m_boundingRect, widget->getWindowScale(),
+                                 widget->minimum(), widget->maximum(), widget->range(), widget->value(), widget->sliderWidth(),
+                                 widget->bindMode(), EASY_GLOBALS.begin_time, EASY_GLOBALS.auto_adjust_chart_height);
+
+    return true;
 }
 
-void EasyArbitraryValuesChartItem::setBoundingRect(qreal _left, qreal _top, qreal _width, qreal _height)
+void ArbitraryValuesChartItem::onImageUpdated()
 {
-    m_boundingRect.setRect(_left, _top, _width, _height);
+    m_maxValue = m_workerMaxValue;
+    m_minValue = m_workerMinValue;
 }
 
-void EasyArbitraryValuesChartItem::update(Collections _collections)
+void ArbitraryValuesChartItem::updateImageAsync(QRectF _boundingRect, qreal _current_scale, qreal _minimum, qreal _maximum, qreal _range,
+                                                qreal _value, qreal _width, bool _bindMode, profiler::timestamp_t _begin_time, bool _autoAdjust)
 {
+    const auto screenWidth = _boundingRect.width() * _current_scale;
+    //const auto maxColumnHeight = _boundingRect.height();
+    const auto viewScale = _range / _width;
+
+    if (_bindMode)
+    {
+        m_workerImageScale = viewScale;
+        m_workerImageOrigin = _value - _width * 3;
+        m_workerImage = new QImage(screenWidth * 7 + 0.5, _boundingRect.height(), QImage::Format_ARGB32);
+    }
+    else
+    {
+        m_workerImageScale = 1;
+        m_workerImageOrigin = _minimum;
+        m_workerImage = new QImage(screenWidth + 0.5, _boundingRect.height(), QImage::Format_ARGB32);
+    }
+
+    m_workerImage->fill(0);
+    QPainter p(m_workerImage);
+    p.setBrush(Qt::NoBrush);
+    p.setRenderHint(QPainter::Antialiasing, true);
+
+    // Draw grid
+    {
+        auto pen = p.pen();
+        pen.setColor(Qt::darkGray);
+        pen.setStyle(Qt::DotLine);
+        p.setPen(pen);
+
+        const int left = 0;
+        const int top = 0;
+        const int w = m_workerImage->width();
+        const int h = m_workerImage->height();
+
+        const int hlines = h / 20;
+        for (int i = 0; i < hlines; ++i)
+        {
+            const auto y = top + 20 + i * 20;
+            p.drawLine(left, y, left + w, y);
+        }
+
+        const int vlines = w / 20;
+        for (int i = 0; i < vlines; ++i)
+        {
+            const auto x = left + 20 + i * 20;
+            p.drawLine(x, top, x, top + h);
+        }
+
+        p.setPen(Qt::SolidLine);
+    }
+
+    if (m_collections.empty() || isReady())
+    {
+        setReady(true);
+        return;
+    }
+
+    using LeftBounds = std::vector<Points::const_iterator>;
+    qreal realScale = _current_scale, offset = 0;
+
+    LeftBounds leftBounds;
+    leftBounds.reserve(m_collections.size());
+
+    if (_bindMode)
+    {
+        _minimum = m_workerImageOrigin;
+        _maximum = m_workerImageOrigin + _width * 7;
+        realScale *= viewScale;
+        offset = _minimum * realScale;
+    }
+
+    const auto right = std::min(_value + _width, _maximum);
+    qreal minValue = 1e300, maxValue = -1e300;
+    for (const auto& c : m_collections)
+    {
+        if (isReady())
+            return;
+
+        const auto& collection = *c.ptr;
+        const auto& points = collection.points();
+
+        if (points.empty())
+        {
+            leftBounds.emplace_back(points.end());
+            continue;
+        }
+
+        if (_bindMode)
+        {
+            auto first = std::lower_bound(points.begin(), points.end(), _minimum, [](const QPointF& point, qreal x)
+            {
+                return point.x() < x;
+            });
+
+            if (first != points.end())
+            {
+                if (first != points.begin())
+                    --first;
+            }
+            else
+            {
+                first = points.begin() + points.size() - 1;
+            }
+
+            leftBounds.emplace_back(first);
+
+            if (_autoAdjust)
+            {
+                for (auto it = first; it != points.end() && it->x() < right; ++it)
+                {
+                    if (it->x() < _value)
+                        continue;
+
+                    const auto value = it->y();
+
+                    if (minValue > value)
+                        minValue = value;
+
+                    if (maxValue < value)
+                        maxValue = value;
+                }
+
+                continue;
+            }
+        }
+        else
+        {
+            leftBounds.emplace_back(points.begin());
+        }
+
+        if (minValue > collection.minValue())
+            minValue = collection.minValue();
+
+        if (maxValue < collection.maxValue())
+            maxValue = collection.maxValue();
+    }
+
+    if (minValue > maxValue)
+    {
+        // No points
+        m_workerMinValue = 0;
+        m_workerMaxValue = 0;
+        setReady(true);
+        return;
+    }
+
+    m_workerMinValue = minValue;
+    m_workerMaxValue = maxValue;
+
+    if (isReady())
+        return;
+
+    const bool singleValue = fabs(maxValue - minValue) < 2 * std::numeric_limits<qreal>::epsilon();
+    const auto middle = _boundingRect.height() * 0.5;
+
+    const qreal height = std::max(maxValue - minValue, 0.01);
+    const auto gety = [&_boundingRect, maxValue, height, singleValue, middle] (qreal y)
+    {
+        if (singleValue)
+        {
+            y = middle;
+        }
+        else
+        {
+            y = maxValue - y;
+            y /= height;
+            y *= _boundingRect.height() - 4;
+            y += 2;
+        }
+
+        return y;
+    };
+
+    size_t i = 0;
+    for (const auto& c : m_collections)
+    {
+        if (isReady())
+            return;
+
+        const auto& points = c.ptr->points();
+        if (points.empty())
+        {
+            ++i;
+            continue;
+        }
+
+        if (c.selected)
+        {
+            auto pen = p.pen();
+            pen.setColor(QColor::fromRgba(c.color));
+            pen.setWidth(2);
+            p.setPen(pen);
+        }
+        else
+        {
+            p.setPen(QColor::fromRgba(c.color));
+        }
+
+        const auto first = leftBounds[i];
+
+        if (c.chartType == ChartType::Points)
+        {
+            for (auto it = first; it != points.end() && it->x() < _maximum; ++it)
+            {
+                if (it->x() < _minimum)
+                    continue;
+
+                if (isReady())
+                    return;
+
+                const qreal x = it->x() * realScale - offset;
+                const qreal y = gety(it->y());
+                p.drawPoint(QPointF {x, y});
+            }
+        }
+        else if (first != points.end() && first->x() < _maximum)
+        {
+            QPointF p1 = *first;
+            qreal x = p1.x() * realScale - offset;
+            qreal y = gety(p1.y());
+            p1.setX(x);
+            p1.setY(y);
+
+            auto it = first;
+            for (++it; it != points.end(); ++it)
+            {
+                if (isReady())
+                    return;
+
+                QPointF p2 = *it;
+                x = p2.x() * realScale - offset;
+                y = gety(p2.y());
+                p2.setX(x);
+                p2.setY(y);
+
+                if (it->x() >= _minimum)
+                    p.drawLine(p1, p2);
+
+                if (it->x() >= _maximum)
+                    break;
+
+                p1 = p2;
+            }
+        }
+
+        if (c.selected)
+        {
+            auto color = profiler_gui::darken(c.color, 0.65f);
+            if (profiler_gui::alpha(color) < 0xc0)
+                p.setPen(QColor::fromRgba(profiler::colors::modify_alpha32(0xc0000000, color)));
+            else
+                p.setPen(QColor::fromRgba(color));
+            p.setBrush(QColor::fromRgba(0xc0ffffff));
+
+            qreal prevX = -offset * 2, prevY = -500;
+            for (auto it = first; it != points.end() && it->x() < _maximum; ++it)
+            {
+                if (it->x() < _minimum)
+                    continue;
+
+                if (isReady())
+                    return;
+
+                const qreal x = it->x() * realScale - offset;
+                const qreal y = gety(it->y());
+
+                const auto dx = x - prevX, dy = y - prevY;
+                const auto delta = estd::sqr(dx) + estd::sqr(dy);
+
+                if (delta > 25)
+                {
+                    p.drawEllipse(QPointF {x, y}, 3, 3);
+                    prevX = x;
+                    prevY = y;
+                }
+            }
+        }
+
+        ++i;
+    }
+
+    setReady(true);
+}
+
+void ArbitraryValuesChartItem::clear()
+{
+    cancelAnyJob();
+    m_boundaryTimer.stop();
+    m_collections.clear();
+    m_minValue = m_maxValue = 0;
+}
+
+void ArbitraryValuesChartItem::update(Collections _collections)
+{
+    cancelImageUpdate();
     m_collections = std::move(_collections);
+    updateImage();
 }
 
-void EasyArbitraryValuesChartItem::update(const ArbitraryValuesCollection* _selected)
+void ArbitraryValuesChartItem::update(const ArbitraryValuesCollection* _selected)
 {
+    cancelImageUpdate();
+
     for (auto& collection : m_collections)
         collection.selected = collection.ptr == _selected;
+
+    updateImage();
 }
 
 //////////////////////////////////////////////////////////////////////////
 
-EasyGraphicsChart::EasyGraphicsChart(QWidget* _parent)
+GraphicsChart::GraphicsChart(QWidget* _parent)
     : Parent(_parent)
-    , m_chartItem(new EasyArbitraryValuesChartItem())
+    , m_chartItem(new ArbitraryValuesChartItem())
-    , m_left(0)
-    , m_right(100)
-    , m_offset(0)
-    , m_xscale(1)
-    , m_visibleRegionWidth(100)
-    , m_bBindMode(false)
 {
-    setCacheMode(QGraphicsView::CacheNone);
+    m_imageItem = m_chartItem;
-    setTransformationAnchor(QGraphicsView::AnchorUnderMouse);
-    //setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
-    setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
-    setOptimizationFlag(QGraphicsView::DontSavePainterState, true);
-
-    setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
-    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
-
-    setContentsMargins(0, 0, 0, 0);
-
-    setScene(new QGraphicsScene(this));
-    scene()->setSceneRect(0, -250, 500, 500);
     scene()->addItem(m_chartItem);
 
-    connect(&EASY_GLOBALS.events, &profiler_gui::EasyGlobalSignals::sceneSizeChanged,
+    const auto rect = scene()->sceneRect();
-            this, &This::onSceneSizeChanged, Qt::QueuedConnection);
+    m_chartItem->setPos(0, 0);
+    m_chartItem->setBoundingRect(0, rect.top() + margin(), scene()->width(), rect.height() - margins() - 1);
 
-    onSceneSizeChanged();
+    connect(&EASY_GLOBALS.events, &profiler_gui::EasyGlobalSignals::autoAdjustChartChanged, [this]
+    {
+        if (m_chartItem->isVisible())
+            m_chartItem->onModeChanged();
+    });
+
+    if (!EASY_GLOBALS.scene.empty)
+    {
+        setRange(EASY_GLOBALS.scene.left, EASY_GLOBALS.scene.right);
+        setSliderWidth(EASY_GLOBALS.scene.window);
+        setValue(EASY_GLOBALS.scene.offset);
+        m_slider->show();
+    }
+
+    m_chartItem->updateImage();
 }
 
-EasyGraphicsChart::~EasyGraphicsChart()
+GraphicsChart::~GraphicsChart()
 {
 
 }
 
-void EasyGraphicsChart::onSceneSizeChanged()
+void GraphicsChart::clear()
 {
-    setRange(EASY_GLOBALS.scene_left, EASY_GLOBALS.scene_right);
+    m_chartItem->clear();
+    Parent::clear();
 }
 
-void EasyGraphicsChart::resizeEvent(QResizeEvent* _event)
+void GraphicsChart::update(Collections _collections)
-{
-    auto size = _event->size();
-    onWindowSizeChanged(size.width(), size.height());
-    scene()->update();
-}
-
-void EasyGraphicsChart::clear()
-{
-    m_chartItem->update(Collections {});
-}
-
-bool EasyGraphicsChart::bindMode() const
-{
-    return m_bBindMode;
-}
-
-qreal EasyGraphicsChart::xscale() const
-{
-    return m_xscale;
-}
-
-qreal EasyGraphicsChart::left() const
-{
-    return m_left;
-}
-
-qreal EasyGraphicsChart::right() const
-{
-    return m_right;
-}
-
-qreal EasyGraphicsChart::range() const
-{
-    return m_right - m_left;
-}
-
-qreal EasyGraphicsChart::offset() const
-{
-    return m_bBindMode ? m_offset : 0;
-}
-
-qreal EasyGraphicsChart::region() const
-{
-    return m_bBindMode ? m_visibleRegionWidth : range();
-}
-
-void EasyGraphicsChart::setOffset(qreal _offset)
-{
-    m_offset = std::min(std::max(m_left, m_offset), m_right - m_visibleRegionWidth);
-}
-
-void EasyGraphicsChart::setRange(qreal _left, qreal _right)
-{
-    const auto oldRange = range();
-    const auto oldOffsetPart = oldRange < 1e-3 ? 0.0 : m_offset / oldRange;
-
-    m_left = _left;
-    m_right = _right;
-
-    if (m_left > m_right)
-        std::swap(m_left, m_right);
-
-    const auto sceneRange = range();
-    //scene()->setSceneRect(m_left, -(height() >> 1), sceneRange, height());
-    //m_chartItem->setBoundingRect(scene()->sceneRect());
-
-    m_offset = m_left + oldOffsetPart * sceneRange;
-    m_visibleRegionWidth = std::min(m_visibleRegionWidth, sceneRange);
-
-    //const auto oldXScale = m_xscale;
-    m_xscale = sceneRange < 1e-3 ? 1.0 : width() / sceneRange;
-    //scale(m_xscale / oldXScale, 1);
-
-    scene()->update();
-}
-
-void EasyGraphicsChart::setRegion(qreal _visibleRegionWidth)
-{
-    m_visibleRegionWidth = std::min(_visibleRegionWidth, range());
-    setOffset(m_offset);
-}
-
-void EasyGraphicsChart::onWindowSizeChanged(qreal _width, qreal _height)
-{
-    //const auto oldXScale = m_xscale;
-    const auto sceneRange = range();
-
-    m_xscale = sceneRange < 1e-3 ? 1.0 : _width / sceneRange;
-
-    scene()->setSceneRect(0, -_height * 0.5, _width, _height);
-    //scene()->setSceneRect(m_left, -_height * 0.5, sceneRange, _height);
-    m_chartItem->setBoundingRect(scene()->sceneRect());
-    //scale(m_xscale / oldXScale, 1);
-}
-
-void EasyGraphicsChart::update(Collections _collections)
 {
     m_chartItem->update(std::move(_collections));
-    scene()->update();
 }
 
-void EasyGraphicsChart::update(const ArbitraryValuesCollection* _selected)
+void GraphicsChart::update(const ArbitraryValuesCollection* _selected)
 {
     m_chartItem->update(_selected);
-    scene()->update();
 }
 
 //////////////////////////////////////////////////////////////////////////
@@ -669,13 +906,13 @@ EASY_CONSTEXPR auto StdItemType = QTreeWidgetItem::UserType;
 EASY_CONSTEXPR auto ValueItemType = QTreeWidgetItem::UserType + 1;
 
 struct UsedValueTypes {
-    EasyArbitraryTreeWidgetItem* items[int_cast(profiler::DataType::TypesCount)];
+    ArbitraryTreeWidgetItem* items[int_cast(profiler::DataType::TypesCount)];
     UsedValueTypes(int = 0) { memset(items, 0, sizeof(items)); }
 };
 
 //////////////////////////////////////////////////////////////////////////
 
-EasyArbitraryTreeWidgetItem::EasyArbitraryTreeWidgetItem(QTreeWidgetItem* _parent, profiler::color_t _color, profiler::vin_t _vin)
+ArbitraryTreeWidgetItem::ArbitraryTreeWidgetItem(QTreeWidgetItem* _parent, profiler::color_t _color, profiler::vin_t _vin)
     : Parent(_parent, ValueItemType)
     , m_vin(_vin)
     , m_color(_color)
@@ -685,29 +922,29 @@ EasyArbitraryTreeWidgetItem::EasyArbitraryTreeWidgetItem(QTreeWidgetItem* _paren
     setCheckState(CheckColumn, Qt::Unchecked);
 }
 
-EasyArbitraryTreeWidgetItem::~EasyArbitraryTreeWidgetItem()
+ArbitraryTreeWidgetItem::~ArbitraryTreeWidgetItem()
 {
 
 }
 
-QVariant EasyArbitraryTreeWidgetItem::data(int _column, int _role) const
+QVariant ArbitraryTreeWidgetItem::data(int _column, int _role) const
 {
     if (_column == CheckColumn && _role == Qt::SizeHintRole)
         return QSize(m_widthHint, 26);
     return Parent::data(_column, _role);
 }
 
-void EasyArbitraryTreeWidgetItem::setWidthHint(int _width)
+void ArbitraryTreeWidgetItem::setWidthHint(int _width)
 {
     m_widthHint = _width;
 }
 
-const ArbitraryValuesCollection* EasyArbitraryTreeWidgetItem::collection() const
+const ArbitraryValuesCollection* ArbitraryTreeWidgetItem::collection() const
 {
     return m_collection.get();
 }
 
-void EasyArbitraryTreeWidgetItem::collectValues(profiler::thread_id_t _threadId)
+void ArbitraryTreeWidgetItem::collectValues(profiler::thread_id_t _threadId)
 {
     if (!m_collection)
         m_collection = CollectionPtr(new ArbitraryValuesCollection);
@@ -717,7 +954,7 @@ void EasyArbitraryTreeWidgetItem::collectValues(profiler::thread_id_t _threadId)
     m_collection->collectValues(_threadId, m_vin, text(int_cast(ArbitraryColumns::Name)).toStdString().c_str(), EASY_GLOBALS.begin_time);
 }
 
-void EasyArbitraryTreeWidgetItem::interrupt()
+void ArbitraryTreeWidgetItem::interrupt()
 {
     if (!m_collection)
         return;
@@ -726,24 +963,29 @@ void EasyArbitraryTreeWidgetItem::interrupt()
     m_collection.release();
 }
 
-profiler::color_t EasyArbitraryTreeWidgetItem::color() const
+profiler::color_t ArbitraryTreeWidgetItem::color() const
 {
     return m_color;
 }
 
 //////////////////////////////////////////////////////////////////////////
 
-EasyArbitraryValuesWidget::EasyArbitraryValuesWidget(QWidget* _parent)
+ArbitraryValuesWidget::ArbitraryValuesWidget(QWidget* _parent)
     : Parent(_parent)
+    , m_splitter(new QSplitter(Qt::Horizontal, this))
     , m_treeWidget(new QTreeWidget(this))
-    , m_chart(new EasyGraphicsChart(this))
+    , m_chart(new GraphicsChart(this))
 {
-    auto layout = new QHBoxLayout(this);
+    m_splitter->setHandleWidth(1);
+    m_splitter->setContentsMargins(0, 0, 0, 0);
+    m_splitter->addWidget(m_treeWidget);
+    m_splitter->addWidget(m_chart);
+    m_splitter->setStretchFactor(0, 1);
+    m_splitter->setStretchFactor(1, 1);
+
+    auto layout = new QVBoxLayout(this);
     layout->setContentsMargins(0, 0, 0, 0);
-    layout->addWidget(m_treeWidget);
+    layout->addWidget(m_splitter);
-    layout->addWidget(m_chart);
-    layout->setStretch(0, 1);
-    layout->setStretch(1, 1);
 
     m_treeWidget->setAutoFillBackground(false);
     m_treeWidget->setAlternatingRowColors(true);
@@ -761,10 +1003,6 @@ EasyArbitraryValuesWidget::EasyArbitraryValuesWidget(QWidget* _parent)
     headerItem->setText(int_cast(ArbitraryColumns::Vin), "ID");
     m_treeWidget->setHeaderItem(headerItem);
 
-//    auto mainLayout = new QVBoxLayout(this);
-//    mainLayout->setContentsMargins(1, 1, 1, 1);
-//    mainLayout->addWidget(m_treeWidget);
-
     connect(&m_timer, &QTimer::timeout, this, &This::rebuild);
     connect(&m_collectionsTimer, &QTimer::timeout, this, &This::onCollectionsTimeout);
 
@@ -775,14 +1013,16 @@ EasyArbitraryValuesWidget::EasyArbitraryValuesWidget(QWidget* _parent)
     connect(&EASY_GLOBALS.events, &::profiler_gui::EasyGlobalSignals::selectedThreadChanged, this, &This::onSelectedThreadChanged);
     connect(&EASY_GLOBALS.events, &::profiler_gui::EasyGlobalSignals::selectedBlockChanged, this, &This::onSelectedBlockChanged);
     connect(&EASY_GLOBALS.events, &::profiler_gui::EasyGlobalSignals::selectedBlockIdChanged, this, &This::onSelectedBlockIdChanged);
+
+    loadSettings();
 }
 
-EasyArbitraryValuesWidget::~EasyArbitraryValuesWidget()
+ArbitraryValuesWidget::~ArbitraryValuesWidget()
 {
-
+    saveSettings();
 }
 
-void EasyArbitraryValuesWidget::clear()
+void ArbitraryValuesWidget::clear()
 {
     if (m_collectionsTimer.isActive())
         m_collectionsTimer.stop();
@@ -792,25 +1032,25 @@ void EasyArbitraryValuesWidget::clear()
     m_treeWidget->clear();
 }
 
-void EasyArbitraryValuesWidget::onSelectedThreadChanged(::profiler::thread_id_t)
+void ArbitraryValuesWidget::onSelectedThreadChanged(::profiler::thread_id_t)
 {
     if (!m_timer.isActive())
         m_timer.start(100);
 }
 
-void EasyArbitraryValuesWidget::onSelectedBlockChanged(uint32_t)
+void ArbitraryValuesWidget::onSelectedBlockChanged(uint32_t)
 {
     if (!m_timer.isActive())
         m_timer.start(100);
 }
 
-void EasyArbitraryValuesWidget::onSelectedBlockIdChanged(::profiler::block_id_t)
+void ArbitraryValuesWidget::onSelectedBlockIdChanged(::profiler::block_id_t)
 {
     if (!m_timer.isActive())
         m_timer.start(100);
 }
 
-void EasyArbitraryValuesWidget::onItemDoubleClicked(QTreeWidgetItem* _item, int)
+void ArbitraryValuesWidget::onItemDoubleClicked(QTreeWidgetItem* _item, int)
 {
     if (_item == nullptr || _item->type() != ValueItemType)
         return;
@@ -818,12 +1058,12 @@ void EasyArbitraryValuesWidget::onItemDoubleClicked(QTreeWidgetItem* _item, int)
     _item->setCheckState(CheckColumn, _item->checkState(CheckColumn) == Qt::Checked ? Qt::Unchecked : Qt::Checked);
 }
 
-void EasyArbitraryValuesWidget::onItemChanged(QTreeWidgetItem* _item, int _column)
+void ArbitraryValuesWidget::onItemChanged(QTreeWidgetItem* _item, int _column)
 {
     if (_item == nullptr || _item->type() != ValueItemType || _column != CheckColumn)
         return;
 
-    auto item = static_cast<EasyArbitraryTreeWidgetItem*>(_item);
+    auto item = static_cast<ArbitraryTreeWidgetItem*>(_item);
 
     if (item->checkState(CheckColumn) == Qt::Checked)
     {
@@ -840,7 +1080,7 @@ void EasyArbitraryValuesWidget::onItemChanged(QTreeWidgetItem* _item, int _colum
     }
 }
 
-void EasyArbitraryValuesWidget::onCurrentItemChanged(QTreeWidgetItem* _current, QTreeWidgetItem*)
+void ArbitraryValuesWidget::onCurrentItemChanged(QTreeWidgetItem* _current, QTreeWidgetItem*)
 {
     if (_current == nullptr || _current->type() != ValueItemType)
     {
@@ -848,11 +1088,11 @@ void EasyArbitraryValuesWidget::onCurrentItemChanged(QTreeWidgetItem* _current,
         return;
     }
 
-    auto item = static_cast<const EasyArbitraryTreeWidgetItem*>(_current);
+    auto item = static_cast<const ArbitraryTreeWidgetItem*>(_current);
     m_chart->update(item->collection());
 }
 
-void EasyArbitraryValuesWidget::rebuild()
+void ArbitraryValuesWidget::rebuild()
 {
     clear();
 
@@ -863,7 +1103,7 @@ void EasyArbitraryValuesWidget::rebuild()
         m_treeWidget->resizeColumnToContents(i);
 }
 
-void EasyArbitraryValuesWidget::onCollectionsTimeout()
+void ArbitraryValuesWidget::onCollectionsTimeout()
 {
     if (m_checkedItems.isEmpty())
     {
@@ -879,7 +1119,7 @@ void EasyArbitraryValuesWidget::onCollectionsTimeout()
     {
         if (item->collection()->status() != ArbitraryValuesCollection::InProgress)
         {
-            collections.push_back(EasyCollectionPaintData {item->collection(), item->color(),
+            collections.push_back(CollectionPaintData {item->collection(), item->color(),
                 ChartType::Line, item == m_treeWidget->currentItem()});
         }
     }
@@ -892,7 +1132,7 @@ void EasyArbitraryValuesWidget::onCollectionsTimeout()
     }
 }
 
-void EasyArbitraryValuesWidget::buildTree(profiler::thread_id_t _threadId, profiler::block_index_t _blockIndex, profiler::block_id_t _blockId)
+void ArbitraryValuesWidget::buildTree(profiler::thread_id_t _threadId, profiler::block_index_t _blockIndex, profiler::block_id_t _blockId)
 {
     m_treeWidget->clear();
     m_treeWidget->setColumnHidden(int_cast(ArbitraryColumns::Value), profiler_gui::is_max(_blockIndex));
@@ -916,7 +1156,7 @@ void EasyArbitraryValuesWidget::buildTree(profiler::thread_id_t _threadId, profi
     }
 }
 
-QTreeWidgetItem* EasyArbitraryValuesWidget::buildTreeForThread(const profiler::BlocksTreeRoot& _threadRoot, profiler::block_index_t _blockIndex, profiler::block_id_t _blockId)
+QTreeWidgetItem* ArbitraryValuesWidget::buildTreeForThread(const profiler::BlocksTreeRoot& _threadRoot, profiler::block_index_t _blockIndex, profiler::block_id_t _blockId)
 {
     auto fm = m_treeWidget->fontMetrics();
 
@@ -932,7 +1172,7 @@ QTreeWidgetItem* EasyArbitraryValuesWidget::buildTreeForThread(const profiler::B
         const auto& desc = easyDescriptor(block.node->id());
         if (desc.type() == profiler::BlockType::Value)
         {
-            auto valueItem = new EasyArbitraryTreeWidgetItem(rootItem, desc.color(), block.value->value_id());
+            auto valueItem = new ArbitraryTreeWidgetItem(rootItem, desc.color(), block.value->value_id());
             valueItem->setText(int_cast(ArbitraryColumns::Type), profiler_gui::valueTypeString(*block.value));
             valueItem->setText(int_cast(ArbitraryColumns::Name), desc.name());
             valueItem->setText(int_cast(ArbitraryColumns::Vin), QString("0x%1").arg(block.value->value_id(), 0, 16));
@@ -1005,8 +1245,8 @@ QTreeWidgetItem* EasyArbitraryValuesWidget::buildTreeForThread(const profiler::B
                     const auto typeIndex = int_cast(child.value->type());
                     auto vin = child.value->value_id();
 
-                    EasyArbitraryTreeWidgetItem** usedItems = nullptr;
+                    ArbitraryTreeWidgetItem** usedItems = nullptr;
-                    EasyArbitraryTreeWidgetItem* valueItem = nullptr;
+                    ArbitraryTreeWidgetItem* valueItem = nullptr;
                     if (vin == 0)
                     {
                         auto result = names.emplace(desc.name(), 0);
@@ -1030,7 +1270,7 @@ QTreeWidgetItem* EasyArbitraryValuesWidget::buildTreeForThread(const profiler::B
                         }
                     }
 
-                    valueItem = new EasyArbitraryTreeWidgetItem(blockItem, desc.color(), vin);
+                    valueItem = new ArbitraryTreeWidgetItem(blockItem, desc.color(), vin);
                     valueItem->setText(int_cast(ArbitraryColumns::Type), profiler_gui::valueTypeString(*child.value));
                     valueItem->setText(int_cast(ArbitraryColumns::Name), desc.name());
                     valueItem->setText(int_cast(ArbitraryColumns::Vin), QString("0x%1").arg(vin, 0, 16));
@@ -1058,3 +1298,27 @@ QTreeWidgetItem* EasyArbitraryValuesWidget::buildTreeForThread(const profiler::B
     return rootItem;
 }
 
+void ArbitraryValuesWidget::loadSettings()
+{
+    QSettings settings(::profiler_gui::ORGANAZATION_NAME, ::profiler_gui::APPLICATION_NAME);
+    settings.beginGroup("ArbitraryValuesWidget");
+
+    auto geometry = settings.value("hsplitter/geometry").toByteArray();
+    if (!geometry.isEmpty())
+        m_splitter->restoreGeometry(geometry);
+
+    auto state = settings.value("hsplitter/state").toByteArray();
+    if (!state.isEmpty())
+        m_splitter->restoreState(state);
+
+    settings.endGroup();
+}
+
+void ArbitraryValuesWidget::saveSettings()
+{
+    QSettings settings(::profiler_gui::ORGANAZATION_NAME, ::profiler_gui::APPLICATION_NAME);
+    settings.beginGroup("ArbitraryValuesWidget");
+    settings.setValue("hsplitter/geometry", m_splitter->saveGeometry());
+    settings.setValue("hsplitter/state", m_splitter->saveState());
+    settings.endGroup();
+}

profiler_gui/arbitrary_value_inspector.h

@@ -58,8 +58,6 @@
 #include <QWidget>
 #include <QTreeWidget>
 #include <QTreeWidgetItem>
-#include <QGraphicsItem>
-#include <QGraphicsView>
 #include <QTimer>
 #include <QPointF>
 #include <QList>
@@ -72,6 +70,7 @@
 #include <thread>
 #include <atomic>
 #include <memory>
+#include "graphics_slider_area.h"
 
 //////////////////////////////////////////////////////////////////////////
 
@@ -136,7 +135,7 @@ enum class ChartType : uint8_t
     Points
 };
 
-struct EasyCollectionPaintData EASY_FINAL
+struct CollectionPaintData EASY_FINAL
 {
     const ArbitraryValuesCollection* ptr;
     QRgb                           color;
@@ -144,44 +143,58 @@ struct EasyCollectionPaintData EASY_FINAL
     bool                        selected;
 };
 
-using Collections = std::vector<EasyCollectionPaintData>;
+using Collections = std::vector<CollectionPaintData>;
 
 //////////////////////////////////////////////////////////////////////////
 
-class EasyArbitraryValuesChartItem : public QGraphicsItem
+class ArbitraryValuesChartItem : public GraphicsImageItem
 {
-    using Parent = QGraphicsItem;
+    using Parent = GraphicsImageItem;
-    using This = EasyArbitraryValuesChartItem;
+    using This = ArbitraryValuesChartItem;
 
     Collections m_collections;
-    QRectF     m_boundingRect;
+    qreal    m_workerMaxValue;
+    qreal    m_workerMinValue;
 
 public:
 
-    explicit EasyArbitraryValuesChartItem();
+    explicit ArbitraryValuesChartItem();
-    ~EasyArbitraryValuesChartItem() override;
+    ~ArbitraryValuesChartItem() override;
 
-    void paint(QPainter* _painter, const QStyleOptionGraphicsItem* _option, QWidget* _widget = nullptr) override;
+    void paint(QPainter* _painter, const QStyleOptionGraphicsItem* _option, QWidget* _widget) override;
 
-    QRectF boundingRect() const override;
+    bool updateImage() override;
-    void setBoundingRect(const QRectF& _rect);
-    void setBoundingRect(qreal _left, qreal _top, qreal _width, qreal _height);
 
+protected:
+
+    void onImageUpdated() override;
+
+public:
+
+    void clear();
     void update(Collections _collections);
     void update(const ArbitraryValuesCollection* _selected);
 
-}; // end of class EasyArbitraryValuesChartItem.
+private:
 
-class EasyGraphicsChart : public QGraphicsView
+    void paintMouseIndicator(QPainter* _painter, qreal _top, qreal _bottom, qreal _width, qreal _height, int _font_h,
+                             qreal _visibleRegionLeft, qreal _visibleRegionWidth);
+
+    void updateImageAsync(QRectF _boundingRect, qreal _current_scale, qreal _minimum, qreal _maximum, qreal _range,
+        qreal _value, qreal _width, bool _bindMode, profiler::timestamp_t _begin_time, bool _autoAdjust);
+
+}; // end of class ArbitraryValuesChartItem.
+
+class GraphicsChart : public GraphicsSliderArea
 {
     Q_OBJECT
 
 private:
 
-    using Parent = QGraphicsView;
+    using Parent = GraphicsSliderArea;
-    using This = EasyGraphicsChart;
+    using This = GraphicsChart;
 
-    EasyArbitraryValuesChartItem* m_chartItem;
+    ArbitraryValuesChartItem* m_chartItem;
     qreal               m_left;
     qreal              m_right;
     qreal             m_offset;
@@ -191,42 +204,24 @@ private:
 
 public:
 
-    explicit EasyGraphicsChart(QWidget* _parent = nullptr);
+    explicit GraphicsChart(QWidget* _parent = nullptr);
-    ~EasyGraphicsChart() override;
+    ~GraphicsChart() override;
 
-    void resizeEvent(QResizeEvent* _event) override;
+    void clear() override;
 
-    void clear();
+public:
-
-    bool bindMode() const;
-    qreal xscale() const;
-
-    qreal left() const;
-    qreal right() const;
-    qreal range() const;
-    qreal offset() const;
-    qreal region() const;
-
-    void setOffset(qreal _offset);
-    void setRange(qreal _left, qreal _right);
-    void setRegion(qreal _visibleRegionWidth);
 
     void update(Collections _collections);
     void update(const ArbitraryValuesCollection* _selected);
 
-private slots:
+}; // end of class GraphicsChart.
-
-    void onSceneSizeChanged();
-    void onWindowSizeChanged(qreal _width, qreal _height);
-
-}; // end of class EasyGraphicsChart.
 
 //////////////////////////////////////////////////////////////////////////
 
-class EasyArbitraryTreeWidgetItem : public QTreeWidgetItem
+class ArbitraryTreeWidgetItem : public QTreeWidgetItem
 {
     using Parent = QTreeWidgetItem;
-    using This = EasyArbitraryTreeWidgetItem;
+    using This = ArbitraryTreeWidgetItem;
     using CollectionPtr = std::unique_ptr<ArbitraryValuesCollection>;
 
     CollectionPtr   m_collection;
@@ -236,8 +231,8 @@ class EasyArbitraryTreeWidgetItem : public QTreeWidgetItem
 
 public:
 
-    explicit EasyArbitraryTreeWidgetItem(QTreeWidgetItem* _parent, profiler::color_t _color, profiler::vin_t _vin = 0);
+    explicit ArbitraryTreeWidgetItem(QTreeWidgetItem* _parent, profiler::color_t _color, profiler::vin_t _vin = 0);
-    ~EasyArbitraryTreeWidgetItem() override;
+    ~ArbitraryTreeWidgetItem() override;
 
     QVariant data(int _column, int _role) const override;
 
@@ -249,27 +244,28 @@ public:
 
     profiler::color_t color() const;
 
-}; // end of class EasyArbitraryTreeWidgetItem.
+}; // end of class ArbitraryTreeWidgetItem.
 
 //////////////////////////////////////////////////////////////////////////
 
-class EasyArbitraryValuesWidget : public QWidget
+class ArbitraryValuesWidget : public QWidget
 {
     Q_OBJECT
 
     using Parent = QWidget;
-    using This = EasyArbitraryValuesWidget;
+    using This = ArbitraryValuesWidget;
 
     QTimer                                 m_timer;
     QTimer                      m_collectionsTimer;
-    QList<EasyArbitraryTreeWidgetItem*> m_checkedItems;
+    QList<ArbitraryTreeWidgetItem*> m_checkedItems;
+    class QSplitter*                    m_splitter;
     QTreeWidget*                      m_treeWidget;
-    EasyGraphicsChart*      m_chart;
+    GraphicsChart*                         m_chart;
 
 public:
 
-    explicit EasyArbitraryValuesWidget(QWidget* _parent = nullptr);
+    explicit ArbitraryValuesWidget(QWidget* _parent = nullptr);
-    ~EasyArbitraryValuesWidget() override;
+    ~ArbitraryValuesWidget() override;
 
     void clear();
 
@@ -292,7 +288,10 @@ private:
     void buildTree(profiler::thread_id_t _threadId, profiler::block_index_t _blockIndex, profiler::block_id_t _blockId);
     QTreeWidgetItem* buildTreeForThread(const profiler::BlocksTreeRoot& _threadRoot, profiler::block_index_t _blockIndex, profiler::block_id_t _blockId);
 
-}; // end of class EasyArbitraryValuesWidget.
+    void loadSettings();
+    void saveSettings();
+
+}; // end of class ArbitraryValuesWidget.
 
 //////////////////////////////////////////////////////////////////////////
 

profiler_gui/blocks_graphics_view.cpp

@@ -72,9 +72,12 @@
 #include <QKeyEvent>
 #include <QScrollBar>
 #include <QGridLayout>
+#include <QHBoxLayout>
+#include <QSplitter>
 #include <QDebug>
 #include <QSignalBlocker>
 #include <QGraphicsDropShadowEffect>
+#include <QSettings>
 #include "blocks_graphics_view.h"
 #include "easy_graphics_item.h"
 #include "easy_chronometer_item.h"
@@ -286,6 +289,7 @@ EasyGraphicsView::EasyGraphicsView(QWidget* _parent)
     , m_sceneWidth(0)
     , m_scale(1)
     , m_offset(0)
+    , m_visibleRegionWidth(0)
     , m_timelineStep(0)
     , m_idleTime(0)
     , m_mouseButtons(Qt::NoButton)
@@ -389,21 +393,64 @@ void EasyGraphicsView::clear()
     m_bEmpty = true;
 
     m_sceneWidth = 10;
+    m_visibleRegionWidth = 10;
     setSceneRect(0, 0, 10, 10);
 
+    auto& sceneData = EASY_GLOBALS.scene;
+    sceneData.left = 0;
+    sceneData.right = m_sceneWidth;
+    sceneData.window = m_visibleRegionWidth;
+    sceneData.offset = m_offset;
+    sceneData.empty = true;
+
     // notify ProfTreeWidget that selection was reset
     emit intervalChanged(m_selectedBlocks, m_beginTime, 0, 0, false);
+
+    EASY_GLOBALS.selected_thread = 0;
+    emit EASY_GLOBALS.events.selectedThreadChanged(0);
+}
+
+void EasyGraphicsView::notifySceneSizeChange()
+{
+    EASY_GLOBALS.scene.left = 0;
+    EASY_GLOBALS.scene.right = m_sceneWidth;
+    emit EASY_GLOBALS.events.sceneSizeChanged(0, m_sceneWidth);
+}
+
+void EasyGraphicsView::notifyVisibleRegionSizeChange()
+{
+    auto vbar = verticalScrollBar();
+    const int vbar_width = (vbar != nullptr && vbar->isVisible() ? vbar->width() + 2 : 0);
+    notifyVisibleRegionSizeChange((m_visibleSceneRect.width() + vbar_width) / m_scale);
+}
+
+void EasyGraphicsView::notifyVisibleRegionSizeChange(qreal _size)
+{
+    m_visibleRegionWidth = _size;
+    EASY_GLOBALS.scene.window = _size;
+    emit EASY_GLOBALS.events.sceneVisibleRegionSizeChanged(_size);
+}
+
+void EasyGraphicsView::notifyVisibleRegionPosChange()
+{
+    EASY_GLOBALS.scene.offset = m_offset;
+    emit EASY_GLOBALS.events.sceneVisibleRegionPosChanged(m_offset);
+}
+
+void EasyGraphicsView::notifyVisibleRegionPosChange(qreal _pos)
+{
+    m_offset = estd::clamp(0., _pos, m_sceneWidth - m_visibleRegionWidth);
+    notifyVisibleRegionPosChange();
 }
 
 void EasyGraphicsView::setTree(const ::profiler::thread_blocks_tree_t& _blocksTree)
 {
     // clear scene
     clear();
+    emit EASY_GLOBALS.events.sceneCleared();
 
     if (_blocksTree.empty())
-    {
         return;
-    }
 
     auto bgItem = new EasyBackgroundItem();
     scene()->addItem(bgItem);
@@ -515,14 +562,14 @@ void EasyGraphicsView::setTree(const ::profiler::thread_blocks_tree_t& _blocksTr
     // Calculating scene rect
     m_sceneWidth = time2position(finish);
     setSceneRect(0, 0, m_sceneWidth, y + TIMELINE_ROW_SIZE);
-
+    EASY_GLOBALS.scene.empty = false;
-    EASY_GLOBALS.scene_left  = 0;
-    EASY_GLOBALS.scene_right = m_sceneWidth;
-    emit EASY_GLOBALS.events.sceneSizeChanged();
 
     // Center view on the beginning of the scene
     updateVisibleSceneRect();
-    setScrollbar(m_pScrollbar);
+    //setScrollbar(m_pScrollbar);
+
+    notifySceneSizeChange();
+    notifyVisibleRegionSizeChange();
 
     // Create new chronometer item (previous item was destroyed by scene on scene()->clear()).
     // It will be shown on mouse right button click.
@@ -543,9 +590,7 @@ void EasyGraphicsView::setTree(const ::profiler::thread_blocks_tree_t& _blocksTr
     emit treeChanged();
 
     if (mainThreadItem != nullptr)
-    {
         longestItem = mainThreadItem;
-    }
 
     if (longestItem != nullptr)
     {
@@ -555,7 +600,7 @@ void EasyGraphicsView::setTree(const ::profiler::thread_blocks_tree_t& _blocksTr
         scrollTo(longestItem);
         m_pScrollbar->setHistogramSource(longestItem->threadId(), longestItem->items(0));
         if (!longestItem->items(0).empty())
-            m_pScrollbar->setValue(longestItem->items(0).front().left() - m_pScrollbar->sliderWidth() * 0.25);
+            notifyVisibleRegionPosChange(longestItem->items(0).front().left() - m_visibleRegionWidth * 0.25);
     }
 
     m_idleTimer.start(IDLE_TIMER_INTERVAL);
@@ -683,11 +728,8 @@ void EasyGraphicsView::setScrollbar(EasyGraphicsScrollbar* _scrollbar)
     auto const prevScrollbar = m_pScrollbar;
     const bool makeConnect = prevScrollbar == nullptr || prevScrollbar != _scrollbar;
 
-    if (prevScrollbar != nullptr && prevScrollbar != _scrollbar)
+    disconnect(&EASY_GLOBALS.events, &profiler_gui::EasyGlobalSignals::chartSliderChanged, this, &This::onGraphicsScrollbarValueChange);
-    {
+    disconnect(&EASY_GLOBALS.events, &profiler_gui::EasyGlobalSignals::chartWheeled, this, &This::onGraphicsScrollbarWheel);
-        disconnect(prevScrollbar, &EasyGraphicsScrollbar::valueChanged, this, &This::onGraphicsScrollbarValueChange);
-        disconnect(prevScrollbar, &EasyGraphicsScrollbar::wheeled, this, &This::onGraphicsScrollbarWheel);
-    }
 
     m_pScrollbar = _scrollbar;
     m_pScrollbar->clear();
@@ -697,11 +739,8 @@ void EasyGraphicsView::setScrollbar(EasyGraphicsScrollbar* _scrollbar)
     const int vbar_width = (vbar != nullptr && vbar->isVisible() ? vbar->width() + 2 : 0);
     m_pScrollbar->setSliderWidth(m_visibleSceneRect.width() + vbar_width);
 
-    if (makeConnect)
+    connect(&EASY_GLOBALS.events, &profiler_gui::EasyGlobalSignals::chartSliderChanged, this, &This::onGraphicsScrollbarValueChange);
-    {
+    connect(&EASY_GLOBALS.events, &profiler_gui::EasyGlobalSignals::chartWheeled, this, &This::onGraphicsScrollbarWheel);
-        connect(m_pScrollbar, &EasyGraphicsScrollbar::valueChanged, this, &This::onGraphicsScrollbarValueChange);
-        connect(m_pScrollbar, &EasyGraphicsScrollbar::wheeled, this, &This::onGraphicsScrollbarWheel);
-    }
 
     EASY_GLOBALS.selected_thread = 0;
     emit EASY_GLOBALS.events.selectedThreadChanged(0);
@@ -768,7 +807,7 @@ void EasyGraphicsView::scaleTo(qreal _scale)
 
     // Update slider width for scrollbar
     const auto windowWidth = (m_visibleSceneRect.width() + vbar_width) / m_scale;
-    m_pScrollbar->setSliderWidth(windowWidth);
+    notifyVisibleRegionSizeChange(windowWidth);
 
     updateTimelineStep(windowWidth);
     repaintScene();
@@ -803,7 +842,7 @@ void EasyGraphicsView::scrollTo(const EasyGraphicsItem* _item)
 {
     m_bUpdatingRect = true;
     auto vbar = verticalScrollBar();
-    vbar->setValue(_item->y() + (_item->boundingRect().height() - vbar->pageStep()) * 0.5);
+    vbar->setValue(static_cast<int>(_item->y() + (_item->boundingRect().height() - vbar->pageStep()) * 0.5));
     m_bUpdatingRect = false;
 }
 
@@ -822,21 +861,18 @@ void EasyGraphicsView::onWheel(qreal _mouseX, int _wheelDelta)
     //updateVisibleSceneRect(); // Update scene rect
 
     // Update slider width for scrollbar
-    auto vbar = verticalScrollBar();
+    notifyVisibleRegionSizeChange();
-    const int vbar_width = (vbar != nullptr && vbar->isVisible() ? vbar->width() + 2 : 0);
-    const auto windowWidth = (m_visibleSceneRect.width() + vbar_width) / m_scale;
-    m_pScrollbar->setSliderWidth(windowWidth);
 
     // Calculate new offset to simulate QGraphicsView::AnchorUnderMouse scaling behavior
-    m_offset = clamp(0., mousePosition - _mouseX / m_scale, m_sceneWidth - windowWidth);
+    m_offset = clamp(0., mousePosition - _mouseX / m_scale, m_sceneWidth - m_visibleRegionWidth);
 
     // Update slider position
-    m_bUpdatingRect = true; // To be sure that updateVisibleSceneRect will not be called by scrollbar change
+    profiler_gui::BoolFlagGuard guard(m_bUpdatingRect, true); // To be sure that updateVisibleSceneRect will not be called by scrollbar change
-    m_pScrollbar->setValue(m_offset);
+    notifyVisibleRegionPosChange();
-    m_bUpdatingRect = false;
+    guard.restore();
 
     updateVisibleSceneRect(); // Update scene rect
-    updateTimelineStep(windowWidth);
+    updateTimelineStep(m_visibleRegionWidth);
     repaintScene(); // repaint scene
 }
 
@@ -975,7 +1011,7 @@ void EasyGraphicsView::mouseReleaseEvent(QMouseEvent* _event)
             // Jump to selected zone
             clicked = true;
             m_flickerSpeedX = m_flickerSpeedY = 0;
-            m_pScrollbar->setValue(m_chronometerItem->left() + m_chronometerItem->width() * 0.5 - m_pScrollbar->sliderHalfWidth());
+            notifyVisibleRegionPosChange(m_chronometerItem->left() + (m_chronometerItem->width() - m_visibleRegionWidth) * 0.5);
         }
 
         if (!clicked && m_mouseMovePath.manhattanLength() < 5)
@@ -993,7 +1029,7 @@ void EasyGraphicsView::mouseReleaseEvent(QMouseEvent* _event)
                 {
                     ::profiler::block_index_t i = ~0U;
                     auto block = item->intersect(mouseClickPos, i);
-                    if (block)
+                    if (block != nullptr)
                     {
                         changedSelectedItem = true;
                         selectedBlock = block;
@@ -1026,23 +1062,26 @@ void EasyGraphicsView::mouseReleaseEvent(QMouseEvent* _event)
 
     if (changedSelectedItem)
     {
-        m_bUpdatingRect = true;
+        profiler_gui::BoolFlagGuard guard(m_bUpdatingRect, true);
+
         if (selectedBlock != nullptr && previouslySelectedBlock == EASY_GLOBALS.selected_block && !selectedBlock->tree.children.empty())
         {
             EASY_GLOBALS.gui_blocks[previouslySelectedBlock].expanded = !EASY_GLOBALS.gui_blocks[previouslySelectedBlock].expanded;
             emit EASY_GLOBALS.events.itemsExpandStateChanged();
         }
+
         emit EASY_GLOBALS.events.selectedBlockChanged(EASY_GLOBALS.selected_block);
 
         if (EASY_GLOBALS.selecting_block_changes_thread && selectedBlock != nullptr && EASY_GLOBALS.selected_thread != selectedBlockThread)
         {
             EASY_GLOBALS.selected_thread = selectedBlockThread;
 
-            m_pScrollbar->lock();
+            emit EASY_GLOBALS.events.lockCharts();
             emit EASY_GLOBALS.events.selectedThreadChanged(EASY_GLOBALS.selected_thread);
-            m_pScrollbar->unlock();
+            emit EASY_GLOBALS.events.unlockCharts();
         }
-        m_bUpdatingRect = false;
+
+        guard.restore();
 
         if (selectedBlock != nullptr && selectedBlockThread == EASY_GLOBALS.selected_thread)
             m_pScrollbar->setHistogramSource(EASY_GLOBALS.selected_thread, EASY_GLOBALS.selected_block_id);
@@ -1164,10 +1203,10 @@ void EasyGraphicsView::mouseMoveEvent(QMouseEvent* _event)
         {
             auto vbar = verticalScrollBar();
 
-            m_bUpdatingRect = true; // Block scrollbars from updating scene rect to make it possible to do it only once
+            profiler_gui::BoolFlagGuard guard(m_bUpdatingRect, true); // Block scrollbars from updating scene rect to make it possible to do it only once
             vbar->setValue(vbar->value() - delta.y());
-            m_pScrollbar->setValue(m_pScrollbar->value() - delta.x() / m_scale);
+            notifyVisibleRegionPosChange(m_offset - delta.x() / m_scale);
-            m_bUpdatingRect = false;
+            guard.restore();
             // Seems like an ugly stub, but QSignalBlocker is also a bad decision
             // because if scrollbar does not emit valueChanged signal then viewport does not move
 
@@ -1243,14 +1282,14 @@ void EasyGraphicsView::keyPressEvent(QKeyEvent* _event)
         case Qt::Key_Right:
         case Qt::Key_6:
         {
-            m_pScrollbar->setValue(m_pScrollbar->value() + KeyStep / m_scale);
+            notifyVisibleRegionPosChange(m_offset + KeyStep / m_scale);
             break;
         }
 
         case Qt::Key_Left:
         case Qt::Key_4:
         {
-            m_pScrollbar->setValue(m_pScrollbar->value() - KeyStep / m_scale);
+            notifyVisibleRegionPosChange(m_offset - KeyStep / m_scale);
             break;
         }
 
@@ -1308,16 +1347,16 @@ void EasyGraphicsView::resizeEvent(QResizeEvent* _event)
 
     // Update slider width for scrollbar
     const auto windowWidth = (m_visibleSceneRect.width() + vbar_width) / m_scale;
-    m_pScrollbar->setSliderWidth(windowWidth);
+    notifyVisibleRegionSizeChange(windowWidth);
 
     // Calculate new offset to save old screen center
     const auto deltaWidth = m_visibleSceneRect.width() - previousRect.width();
     m_offset = clamp(0., m_offset - deltaWidth * 0.5 / m_scale, m_sceneWidth - windowWidth);
 
     // Update slider position
-    m_bUpdatingRect = true; // To be sure that updateVisibleSceneRect will not be called by scrollbar change
+    profiler_gui::BoolFlagGuard guard(m_bUpdatingRect, true); // To be sure that updateVisibleSceneRect will not be called by scrollbar change
-    m_pScrollbar->setValue(m_offset);
+    notifyVisibleRegionPosChange();
-    m_bUpdatingRect = false;
+    guard.restore();
 
     repaintScene(); // repaint scene
 }
@@ -1379,6 +1418,9 @@ void EasyGraphicsView::initMode()
         if (!m_selectedBlocks.empty())
             emit intervalChanged(m_selectedBlocks, m_beginTime, position2time(m_chronometerItem->left()), position2time(m_chronometerItem->right()), m_chronometerItem->reverse());
     });
+
+    connect(globalSignals, &profiler_gui::EasyGlobalSignals::chartSliderChanged, this, &This::onGraphicsScrollbarValueChange);
+    connect(globalSignals, &profiler_gui::EasyGlobalSignals::chartWheeled, this, &This::onGraphicsScrollbarWheel);
 }
 
 //////////////////////////////////////////////////////////////////////////
@@ -1444,10 +1486,10 @@ void EasyGraphicsView::onFlickerTimeout()
 
         auto vbar = verticalScrollBar();
 
-        m_bUpdatingRect = true; // Block scrollbars from updating scene rect to make it possible to do it only once
+        profiler_gui::BoolFlagGuard guard(m_bUpdatingRect, true); // Block scrollbars from updating scene rect to make it possible to do it only once
-        m_pScrollbar->setValue(m_pScrollbar->value() - m_flickerSpeedX / m_scale);
+        notifyVisibleRegionPosChange(m_offset - m_flickerSpeedX / m_scale);
         vbar->setValue(vbar->value() - m_flickerSpeedY);
-        m_bUpdatingRect = false;
+        guard.restore();
         // Seems like an ugly stub, but QSignalBlocker is also a bad decision
         // because if scrollbar does not emit valueChanged signal then viewport does not move
 
@@ -1954,22 +1996,20 @@ void EasyGraphicsView::onSelectedBlockChange(unsigned int _block_index)
 
             m_flickerSpeedX = m_flickerSpeedY = 0;
 
-            m_bUpdatingRect = true;
+            const profiler_gui::BoolFlagGuard guard(m_bUpdatingRect, true);
             verticalScrollBar()->setValue(static_cast<int>(thread_item->levelY(guiblock.graphics_item_level) - m_visibleSceneRect.height() * 0.5));
-            m_pScrollbar->setValue(item.left() + item.width() * 0.5 - m_pScrollbar->sliderHalfWidth());
+            notifyVisibleRegionPosChange(item.left() + (item.width() - m_visibleRegionWidth) * 0.5);
 
             if (EASY_GLOBALS.selecting_block_changes_thread && EASY_GLOBALS.selected_thread != thread_item->threadId())
             {
                 EASY_GLOBALS.selected_thread = thread_item->threadId();
 
-                m_pScrollbar->lock();
+                emit EASY_GLOBALS.events.lockCharts();
                 emit EASY_GLOBALS.events.selectedThreadChanged(EASY_GLOBALS.selected_thread);
-                m_pScrollbar->unlock();
+                emit EASY_GLOBALS.events.unlockCharts();
             }
 
             m_pScrollbar->setHistogramSource(EASY_GLOBALS.selected_thread, guiblock.tree.node->id());
-
-            m_bUpdatingRect = false;
         }
         else if (EASY_GLOBALS.selected_thread != 0)
         {
@@ -2006,7 +2046,8 @@ void EasyGraphicsView::onRefreshRequired()
 
 EasyGraphicsViewWidget::EasyGraphicsViewWidget(QWidget* _parent)
     : QWidget(_parent)
-    , m_scrollbar(new EasyGraphicsScrollbar(true, 85 + (QFontMetrics(font()).height() << 1), this))
+    , m_splitter(new QSplitter(Qt::Vertical, this))
+    , m_scrollbar(new EasyGraphicsScrollbar(85 + (QFontMetrics(font()).height() << 1), this))
     , m_view(new EasyGraphicsView(this))
     , m_threadNamesWidget(new EasyThreadNamesWidget(m_view, m_scrollbar->height(), this))
 {
@@ -2015,13 +2056,18 @@ EasyGraphicsViewWidget::EasyGraphicsViewWidget(QWidget* _parent)
 
 void EasyGraphicsViewWidget::initWidget()
 {
-    auto lay = new QGridLayout(this);
+    m_splitter->setHandleWidth(1);
+    m_splitter->setContentsMargins(0, 0, 0, 0);
+    m_splitter->addWidget(m_view);
+    m_splitter->addWidget(m_scrollbar);
+    m_splitter->setStretchFactor(0, 500);
+    m_splitter->setStretchFactor(1, 1);
+
+    auto lay = new QHBoxLayout(this);
     lay->setContentsMargins(0, 0, 0, 0);
     lay->setSpacing(1);
-    lay->addWidget(m_threadNamesWidget, 0, 0, 2, 1);
+    lay->addWidget(m_threadNamesWidget);
-    lay->addWidget(m_view, 0, 1);
+    lay->addWidget(m_splitter);
-    lay->addWidget(m_scrollbar, 1, 1);
-    setLayout(lay);
 
     m_view->setScrollbar(m_scrollbar);
 }
@@ -2043,6 +2089,23 @@ void EasyGraphicsViewWidget::clear()
     m_view->clear();
 }
 
+void EasyGraphicsViewWidget::save(QSettings& settings)
+{
+    settings.setValue("diagram/vsplitter/geometry", m_splitter->saveGeometry());
+    settings.setValue("diagram/vsplitter/state", m_splitter->saveState());
+}
+
+void EasyGraphicsViewWidget::restore(QSettings& settings)
+{
+    auto geometry = settings.value("diagram/vsplitter/geometry").toByteArray();
+    if (!geometry.isEmpty())
+        m_splitter->restoreGeometry(geometry);
+
+    auto state = settings.value("diagram/vsplitter/state").toByteArray();
+    if (!state.isEmpty())
+        m_splitter->restoreState(state);
+}
+
 //////////////////////////////////////////////////////////////////////////
 //////////////////////////////////////////////////////////////////////////
 
@@ -2117,6 +2180,9 @@ void EasyThreadNameItem::paint(QPainter* _painter, const QStyleOptionGraphicsIte
         _painter->drawRect(rect);
     }
 
+    if (h + 2 >= parentView->height())
+        return;
+
     // Draw separator between thread names area and information area
     _painter->setPen(::profiler_gui::SYSTEM_BORDER_COLOR);
     _painter->drawLine(QLineF(0, h, w, h));

profiler_gui/blocks_graphics_view.h

@@ -136,6 +136,7 @@ private:
     qreal                          m_sceneWidth; ///< 
     qreal                               m_scale; ///< Current scale
     qreal                              m_offset; ///< Have to use manual offset for all scene content instead of using scrollbars because QScrollBar::value is 32-bit integer :(
+    qreal                  m_visibleRegionWidth; ///< Visible scene rectangle in scene coordinates + width of vertical scrollbar (if visible)
     qreal                        m_timelineStep; ///< 
     uint64_t                         m_idleTime; ///< 
     QPoint                      m_mousePressPos; ///< Last mouse global position (used by mousePressEvent and mouseMoveEvent)
@@ -156,7 +157,7 @@ private:
 public:
 
     explicit EasyGraphicsView(QWidget* _parent = nullptr);
-    virtual ~EasyGraphicsView();
+    ~EasyGraphicsView() override;
 
     // Public virtual methods
 
@@ -198,6 +199,12 @@ private:
 
     // Private non-virtual methods
 
+    void notifySceneSizeChange();
+    void notifyVisibleRegionSizeChange();
+    void notifyVisibleRegionSizeChange(qreal _size);
+    void notifyVisibleRegionPosChange();
+    void notifyVisibleRegionPosChange(qreal _pos);
+
     void removePopup(bool _removeFromScene = false);
 
     EasyChronometerItem* createChronometer(bool _main = true);
@@ -230,33 +237,33 @@ public:
 
     // Public inline methods
 
-    inline qreal scale() const
+    qreal scale() const
     {
         return m_scale;
     }
 
-    inline qreal offset() const
+    qreal offset() const
     {
         return m_offset;
     }
 
-    inline const QRectF& visibleSceneRect() const
+    const QRectF& visibleSceneRect() const
     {
         return m_visibleSceneRect;
     }
 
-    inline qreal timelineStep() const
+    qreal timelineStep() const
     {
         return m_timelineStep;
     }
 
-    inline qreal time2position(const profiler::timestamp_t& _time) const
+    qreal time2position(const profiler::timestamp_t& _time) const
     {
         return PROF_MICROSECONDS(qreal(_time - m_beginTime));
         //return PROF_MILLISECONDS(qreal(_time - m_beginTime));
     }
 
-    inline ::profiler::timestamp_t position2time(qreal _pos) const
+    ::profiler::timestamp_t position2time(qreal _pos) const
     {
         return PROF_FROM_MICROSECONDS(_pos);
         //return PROF_FROM_MILLISECONDS(_pos);
@@ -272,8 +279,8 @@ class EasyThreadNamesWidget : public QGraphicsView
 
 private:
 
-    typedef QGraphicsView Parent;
+    using Parent = QGraphicsView;
-    typedef EasyThreadNamesWidget This;
+    using This = EasyThreadNamesWidget;
 
     QTimer                  m_idleTimer; ///< 
     uint64_t                 m_idleTime; ///< 
@@ -285,7 +292,7 @@ private:
 public:
 
     explicit EasyThreadNamesWidget(EasyGraphicsView* _view, int _additionalHeight, QWidget* _parent = nullptr);
-    virtual ~EasyThreadNamesWidget();
+    ~EasyThreadNamesWidget() override;
 
     void mousePressEvent(QMouseEvent* _event) override;
     void mouseDoubleClickEvent(QMouseEvent* _event) override;
@@ -325,6 +332,7 @@ class EasyGraphicsViewWidget : public QWidget
 
 private:
 
+    class QSplitter*                m_splitter;
     EasyGraphicsScrollbar*         m_scrollbar;
     EasyGraphicsView*                   m_view;
     EasyThreadNamesWidget* m_threadNamesWidget;
@@ -332,11 +340,14 @@ private:
 public:
 
     explicit EasyGraphicsViewWidget(QWidget* _parent = nullptr);
-    virtual ~EasyGraphicsViewWidget();
+    ~EasyGraphicsViewWidget() override;
 
     EasyGraphicsView* view();
     void clear();
 
+    void save(class QSettings& settings);
+    void restore(class QSettings& settings);
+
 private:
 
     void initWidget();

profiler_gui/common_functions.h

@@ -128,6 +128,10 @@ void set_max(T& _value) {
 
 //////////////////////////////////////////////////////////////////////////
 
+inline EASY_CONSTEXPR_FCN QRgb alpha(::profiler::color_t _color) {
+    return (_color & 0xff000000) >> 24;
+}
+
 inline EASY_CONSTEXPR_FCN QRgb toRgb(uint32_t _red, uint32_t _green, uint32_t _blue) {
     return (_red << 16) + (_green << 8) + _blue;
 }
@@ -136,6 +140,13 @@ inline EASY_CONSTEXPR_FCN QRgb fromProfilerRgb(uint32_t _red, uint32_t _green, u
     return _red == 0 && _green == 0 && _blue == 0 ? ::profiler::colors::Default : toRgb(_red, _green, _blue) | 0x00141414;
 }
 
+inline QRgb darken(::profiler::color_t _color, float _part) {
+    const uint32_t r = (_color & 0x00ff0000) >> 16;
+    const uint32_t g = (_color & 0x0000ff00) >> 8;
+    const uint32_t b = _color & 0x000000ff;
+    return (_color & 0xff000000) | toRgb(r - static_cast<uint32_t>(r * _part), g - static_cast<uint32_t>(g * _part), b - static_cast<uint32_t>(b * _part));
+}
+
 EASY_FORCE_INLINE EASY_CONSTEXPR_FCN qreal colorSum(::profiler::color_t _color) {
     return 255. - (((_color & 0x00ff0000) >> 16) * 0.299 + ((_color & 0x0000ff00) >> 8) * 0.587 + (_color & 0x000000ff) * 0.114);
 }

profiler_gui/common_types.h

@@ -165,6 +165,20 @@ enum TimeUnits : int8_t
 
 //////////////////////////////////////////////////////////////////////////
 
+class BoolFlagGuard EASY_FINAL
+{
+    bool&    m_ref;
+    bool m_restore;
+
+public:
+
+    explicit BoolFlagGuard(bool& flag) : m_ref(flag), m_restore(!flag) {}
+    explicit BoolFlagGuard(bool& flag, bool value) : m_ref(flag), m_restore(!value) { m_ref = value; }
+    ~BoolFlagGuard() { restore(); }
+
+    void restore() { m_ref = m_restore; }
+};
+
 } // END of namespace profiler_gui.
 
 template <typename ... Args>

profiler_gui/descriptors_tree_widget.cpp

@@ -67,6 +67,7 @@
 #include <QToolBar>
 #include <QVBoxLayout>
 #include <QHBoxLayout>
+#include <QSplitter>
 #include <QVariant>
 #include <QTimer>
 #include <thread>
@@ -765,14 +766,20 @@ int EasyDescTreeWidget::findPrev(const QString& _str, Qt::MatchFlags _flags)
 //////////////////////////////////////////////////////////////////////////
 
 EasyDescWidget::EasyDescWidget(QWidget* _parent) : Parent(_parent)
+    , m_splitter(new QSplitter(Qt::Vertical, this))
     , m_tree(new EasyDescTreeWidget(this))
-    , m_values(new EasyArbitraryValuesWidget(this))
+    , m_values(new ArbitraryValuesWidget(this))
     , m_searchBox(new QLineEdit(this))
     , m_foundNumber(new QLabel("Found 0 matches", this))
     , m_searchButton(nullptr)
     , m_bCaseSensitiveSearch(false)
 {
-    loadSettings();
+    m_splitter->setHandleWidth(1);
+    m_splitter->setContentsMargins(0, 0, 0, 0);
+    m_splitter->addWidget(m_tree);
+    m_splitter->addWidget(m_values);
+    m_splitter->setStretchFactor(0, 1);
+    m_splitter->setStretchFactor(1, 1);
 
     m_searchBox->setFixedWidth(300);
     m_searchBox->setContentsMargins(5, 0, 0, 0);
@@ -812,6 +819,7 @@ EasyDescWidget::EasyDescWidget(QWidget* _parent) : Parent(_parent)
     a->setChecked(m_bCaseSensitiveSearch);
     connect(a, &QAction::triggered, [this](bool _checked){ m_bCaseSensitiveSearch = _checked; });
     menu->addAction(a);
+    QAction* caseSensitiveSwitch = a;
 
     menu->addSeparator();
     auto headerItem = m_tree->headerItem();
@@ -845,11 +853,13 @@ EasyDescWidget::EasyDescWidget(QWidget* _parent) : Parent(_parent)
     auto lay = new QVBoxLayout(this);
     lay->setContentsMargins(1, 1, 1, 1);
     lay->addLayout(searchbox);
-    lay->addWidget(m_tree);
+    lay->addWidget(m_splitter);
-    lay->addWidget(m_values);
 
     connect(m_searchBox, &QLineEdit::returnPressed, this, &This::onSeachBoxReturnPressed);
     connect(&EASY_GLOBALS.events, &::profiler_gui::EasyGlobalSignals::connectionChanged, refreshButton, &QAction::setEnabled);
+
+    loadSettings();
+    caseSensitiveSwitch->setChecked(m_bCaseSensitiveSearch);
 }
 
 EasyDescWidget::~EasyDescWidget()
@@ -866,6 +876,14 @@ void EasyDescWidget::loadSettings()
     if (!val.isNull())
         m_bCaseSensitiveSearch = val.toBool();
 
+    auto geometry = settings.value("vsplitter/geometry").toByteArray();
+    if (!geometry.isEmpty())
+        m_splitter->restoreGeometry(geometry);
+
+    auto state = settings.value("vsplitter/state").toByteArray();
+    if (!state.isEmpty())
+        m_splitter->restoreState(state);
+
     settings.endGroup();
 }
 
@@ -874,6 +892,8 @@ void EasyDescWidget::saveSettings()
     QSettings settings(::profiler_gui::ORGANAZATION_NAME, ::profiler_gui::APPLICATION_NAME);
     settings.beginGroup("EasyDescWidget");
     settings.setValue("case_sensitive", m_bCaseSensitiveSearch);
+    settings.setValue("vsplitter/geometry", m_splitter->saveGeometry());
+    settings.setValue("vsplitter/state", m_splitter->saveState());
     settings.endGroup();
 }
 

profiler_gui/descriptors_tree_widget.h

@@ -90,7 +90,7 @@ private:
 public:
 
     explicit EasyDescWidgetItem(::profiler::block_id_t _desc, Parent* _parent = nullptr);
-    virtual ~EasyDescWidgetItem();
+    ~EasyDescWidgetItem() override;
 
     bool operator < (const Parent& _other) const override;
     QVariant data(int _column, int _role) const override;
@@ -99,12 +99,12 @@ public:
 
     // Public inline methods
 
-    inline ::profiler::block_id_t desc() const
+    ::profiler::block_id_t desc() const
     {
         return m_desc;
     }
 
-    inline void setType(Type _type)
+    void setType(Type _type)
     {
         m_type = _type;
     }
@@ -117,12 +117,12 @@ class EasyDescTreeWidget : public QTreeWidget
 {
     Q_OBJECT
 
-    typedef QTreeWidget    Parent;
+    using Parent = QTreeWidget;
-    typedef EasyDescTreeWidget   This;
+    using This = EasyDescTreeWidget;
 
-    typedef ::std::vector<EasyDescWidgetItem*> Items;
+    using Items = ::std::vector<EasyDescWidgetItem*>;
-    typedef ::std::vector<QTreeWidgetItem*> TreeItems;
+    using TreeItems = ::std::vector<QTreeWidgetItem*>;
-    typedef ::std::unordered_set<::std::string> ExpandedFiles;
+    using ExpandedFiles = ::std::unordered_set<::std::string>;
 
 protected:
 
@@ -140,7 +140,7 @@ public:
     // Public virtual methods
 
     explicit EasyDescTreeWidget(QWidget* _parent = nullptr);
-    virtual ~EasyDescTreeWidget();
+    ~EasyDescTreeWidget() override;
     void contextMenuEvent(QContextMenuEvent* _event) override;
 
 public:
@@ -183,13 +183,14 @@ class EasyDescWidget : public QWidget
 {
     Q_OBJECT
 
-    typedef QWidget      Parent;
+    using Parent = QWidget;
-    typedef EasyDescWidget This;
+    using This = EasyDescWidget;
 
 private:
 
+    class QSplitter*   m_splitter;
     EasyDescTreeWidget*    m_tree;
-    class EasyArbitraryValuesWidget* m_values;
+    class ArbitraryValuesWidget* m_values;
     class QLineEdit*  m_searchBox;
     class QLabel*   m_foundNumber;
     class QAction* m_searchButton;
@@ -200,7 +201,7 @@ public:
     // Public virtual methods
 
     explicit EasyDescWidget(QWidget* _parent = nullptr);
-    virtual ~EasyDescWidget();
+    ~EasyDescWidget() override;
     void keyPressEvent(QKeyEvent* _event) override;
     void contextMenuEvent(QContextMenuEvent* _event) override;
 

profiler_gui/easy_graphics_scrollbar.cpp

@@ -772,44 +772,12 @@ void GraphicsHistogramItem::pickFrameTime(qreal _y) const
 
 //////////////////////////////////////////////////////////////////////////
 
-void GraphicsHistogramItem::onValueChanged()
-{
-    const auto widget = static_cast<const EasyGraphicsScrollbar*>(scene()->parent());
-
-    if (!widget->bindMode())
-        return;
-
-    m_boundaryTimer.stop();
-
-    const auto sliderWidth_inv = 1.0 / widget->sliderWidth();
-    const auto k = widget->range() * sliderWidth_inv;
-
-    const auto deltaScale = m_imageScaleUpdate < k ? (k / m_imageScaleUpdate) : (m_imageScaleUpdate / k);
-    if (deltaScale > 4)
-    {
-        updateImage();
-        return;
-    }
-
-    const auto deltaOffset = (widget->value() - m_imageOriginUpdate) * sliderWidth_inv;
-    if (deltaOffset < 1.5 || deltaOffset > 4.5)
-    {
-        updateImage();
-        return;
-    }
-
-    m_boundaryTimer.start();
-}
-
-//////////////////////////////////////////////////////////////////////////
-
 void GraphicsHistogramItem::onModeChanged()
 {
     if (!isImageUpdatePermitted())
         return;
 
     const auto widget = static_cast<const EasyGraphicsScrollbar*>(scene()->parent());
-
     if (!widget->bindMode() && EASY_GLOBALS.auto_adjust_histogram_height)
     {
         m_topValue = m_maxValue;
@@ -827,7 +795,7 @@ bool GraphicsHistogramItem::updateImage()
     if (!Parent::updateImage())
         return false;
 
-    const auto widget = static_cast<const EasyGraphicsScrollbar*>(scene()->parent());
+    const auto widget = static_cast<const GraphicsSliderArea*>(scene()->parent());
 
     m_imageScaleUpdate = widget->range() / widget->sliderWidth();
     m_imageOriginUpdate = widget->bindMode() ? (widget->value() - widget->sliderWidth() * 3) : widget->minimum();
@@ -1151,62 +1119,21 @@ void GraphicsHistogramItem::updateImageAsync(QRectF _boundingRect, HistRegime _r
 
 //////////////////////////////////////////////////////////////////////////
 
-EasyGraphicsScrollbar::EasyGraphicsScrollbar(bool _fixedHeight, int _height, QWidget* _parent)
+EasyGraphicsScrollbar::EasyGraphicsScrollbar(int _initialHeight, QWidget* _parent)
     : Parent(_parent)
-    , m_minimumValue(0)
-    , m_maximumValue(500)
-    , m_value(10)
-    , m_windowScale(1)
-    , m_mouseButtons(Qt::NoButton)
-    , m_slider(nullptr)
-    , m_selectionIndicator(nullptr)
     , m_histogramItem(nullptr)
-    , m_fontHeight(0)
-    , m_bScrolling(false)
-    , m_bBindMode(false)
-    , m_bLocked(false)
 {
-    setCacheMode(QGraphicsView::CacheNone);
+    const int sceneHeight = _initialHeight - 2;
-    setTransformationAnchor(QGraphicsView::AnchorUnderMouse);
-    //setViewportUpdateMode(QGraphicsView::BoundingRectViewportUpdate);
-    setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
-    setOptimizationFlag(QGraphicsView::DontSavePainterState, true);
-
-    setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
-    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
-
-    setContentsMargins(0, 0, 0, 0);
-
-    setScene(new QGraphicsScene(this));
-
-    m_fontHeight = QFontMetrics(font()).height();
-
-    const int sceneHeight = _height - 2;
     scene()->setSceneRect(0, -(sceneHeight >> 1), 500, sceneHeight);
-    if (_fixedHeight)
-        setFixedHeight(_height);
 
     m_histogramItem = new GraphicsHistogramItem();
+    m_imageItem = m_histogramItem;
     scene()->addItem(m_histogramItem);
 
     m_histogramItem->setPos(0, 0);
     m_histogramItem->setBoundingRect(0, scene()->sceneRect().top() + margin(), scene()->width(), sceneHeight - margins() - 1);
     m_histogramItem->hide();
 
-    m_selectionIndicator = new GraphicsSliderItem(6, false);
-    scene()->addItem(m_selectionIndicator);
-
-    m_selectionIndicator->setPos(0, 0);
-    m_selectionIndicator->setColor(0x40000000 | profiler_gui::CHRONOMETER_COLOR.rgba());
-    m_selectionIndicator->hide();
-
-    m_slider = new GraphicsSliderItem(6, true);
-    scene()->addItem(m_slider);
-
-    m_slider->setPos(0, 0);
-    m_slider->setColor(0x40c0c0c0);
-    m_slider->hide();
-
     connect(&EASY_GLOBALS.events, &profiler_gui::EasyGlobalSignals::expectedFrameTimeChanged, [this]()
     {
         if (m_histogramItem->isVisible())
@@ -1231,7 +1158,13 @@ EasyGraphicsScrollbar::EasyGraphicsScrollbar(bool _fixedHeight, int _height, QWi
     connect(&EASY_GLOBALS.events, &profiler_gui::EasyGlobalSignals::threadNameDecorationChanged, this, &This::onThreadViewChanged);
     connect(&EASY_GLOBALS.events, &profiler_gui::EasyGlobalSignals::hexThreadIdChanged, this, &This::onThreadViewChanged);
 
-    centerOn(0, 0);
+    if (!EASY_GLOBALS.scene.empty)
+    {
+        setRange(EASY_GLOBALS.scene.left, EASY_GLOBALS.scene.right);
+        setSliderWidth(EASY_GLOBALS.scene.window);
+        setValue(EASY_GLOBALS.scene.offset);
+        m_slider->show();
+    }
 }
 
 EasyGraphicsScrollbar::~EasyGraphicsScrollbar()

profiler_gui/easy_graphics_scrollbar.h

@@ -112,7 +112,6 @@ public:
     bool decreaseBottomValue() override;
 
     void onModeChanged() override;
-    void onValueChanged() override;
 
 public:
 
@@ -156,7 +155,7 @@ private:
 
 public:
 
-    explicit EasyGraphicsScrollbar(bool _fixedHeight, int _height, QWidget* _parent = nullptr);
+    explicit EasyGraphicsScrollbar(int _initialHeight, QWidget* _parent = nullptr);
     ~EasyGraphicsScrollbar() override;
 
     void clear() override;

profiler_gui/globals.cpp

@@ -75,8 +75,6 @@ namespace profiler_gui {
         , chronometer_font(::profiler_gui::EFont("DejaVu Sans", 16, QFont::Bold))
         , items_font(::profiler_gui::EFont("DejaVu Sans", 10, QFont::Medium))
         , selected_item_font(::profiler_gui::EFont("DejaVu Sans", 10, QFont::Medium))
-        , scene_left(0)
-        , scene_right(100)
         , begin_time(0)
         , selected_thread(0U)
         , selected_block(::profiler_gui::numeric_max<decltype(selected_block)>())
@@ -109,6 +107,7 @@ namespace profiler_gui {
         , highlight_blocks_with_same_id(true)
         , selecting_block_changes_thread(true)
         , auto_adjust_histogram_height(true)
+        , auto_adjust_chart_height(true)
         , display_only_frames_on_histogram(false)
         , bind_scene_and_tree_expand_status(true)
     {

profiler_gui/globals.h

@@ -162,6 +162,15 @@ namespace profiler_gui {
 
     //////////////////////////////////////////////////////////////////////////
 
+    struct SceneData Q_DECL_FINAL
+    {
+        qreal left = 0;
+        qreal right = 100;
+        qreal window = 100;
+        qreal offset = 0;
+        bool empty = true;
+    };
+
     struct EasyGlobals Q_DECL_FINAL
     {
         static EasyGlobals& instance();
@@ -177,8 +186,7 @@ namespace profiler_gui {
         QFont                                 items_font; ///< Font for easy_graphics_item
         QFont                         selected_item_font; ///< Font for easy_graphics_item
 
-        double                                scene_left; ///< Graphics scene left boundary
+        SceneData                                  scene; ///<
-        double                               scene_right; ///< Graphics scene right boundary
         ::profiler::timestamp_t               begin_time; ///<
         ::profiler::thread_id_t          selected_thread; ///< Current selected thread id
         ::profiler::block_index_t         selected_block; ///< Current selected profiler block index
@@ -211,6 +219,7 @@ namespace profiler_gui {
         bool               highlight_blocks_with_same_id; ///< Highlight all blocks with same id on diagram
         bool              selecting_block_changes_thread; ///< If true then current selected thread will change every time you select block
         bool                auto_adjust_histogram_height; ///< Automatically adjust histogram height to the visible region
+        bool                    auto_adjust_chart_height; ///< Automatically adjust arbitrary value chart height to the visible region
         bool            display_only_frames_on_histogram; ///< Display only top-level blocks on histogram when drawing histogram by block id
         bool           bind_scene_and_tree_expand_status; /** \brief If true then items on graphics scene and in the tree (blocks hierarchy) are binded on each other
                                                                 so expanding/collapsing items on scene also expands/collapse items in the tree. */

profiler_gui/globals_qobjects.h

@@ -67,7 +67,7 @@ namespace profiler_gui {
     public:
 
         EasyGlobalSignals();
-        virtual ~EasyGlobalSignals();
+        ~EasyGlobalSignals() Q_DECL_OVERRIDE;
 
     signals:
 
@@ -80,13 +80,23 @@ namespace profiler_gui {
         void blocksRefreshRequired(bool);
         void expectedFrameTimeChanged();
         void autoAdjustHistogramChanged();
+        void autoAdjustChartChanged();
         void displayOnlyFramesOnHistogramChanged();
         void hierarchyFlagChanged(bool);
         void threadNameDecorationChanged();
         void hexThreadIdChanged();
         void refreshRequired();
         void blocksTreeModeChanged();
-        void sceneSizeChanged();
+
+        void sceneCleared();
+        void sceneSizeChanged(qreal left, qreal right);
+        void sceneVisibleRegionSizeChanged(qreal width);
+        void sceneVisibleRegionPosChanged(qreal pos);
+        void lockCharts();
+        void unlockCharts();
+
+        void chartWheeled(qreal pos, int delta);
+        void chartSliderChanged(qreal pos);
 
     }; // END of class EasyGlobalSignals.
 

profiler_gui/graphics_image_item.cpp

@@ -71,14 +71,10 @@ bool GraphicsImageItem::updateImage()
     return true;
 }
 
-
 void GraphicsImageItem::onValueChanged()
 {
     const auto widget = qobject_cast<const GraphicsSliderArea*>(scene()->parent());
-    if (widget == nullptr)
+    if (widget == nullptr || !widget->bindMode())
-        return;
-
-    if (!widget->bindMode())
         return;
 
     m_boundaryTimer.stop();

profiler_gui/graphics_image_item.h

@@ -55,7 +55,6 @@ public:
 
     virtual bool updateImage();
     virtual void onModeChanged();
-    virtual void onValueChanged();
 
 protected:
 
@@ -63,6 +62,7 @@ protected:
 
 public:
 
+    void onValueChanged();
     void setMousePos(const QPointF& pos);
     void setMousePos(qreal x, qreal y);
     void setBoundingRect(const QRectF& _rect);

profiler_gui/graphics_slider_area.cpp

@@ -172,11 +172,13 @@ GraphicsSliderArea::GraphicsSliderArea(QWidget* _parent)
     , m_mouseButtons(Qt::NoButton)
     , m_slider(nullptr)
     , m_selectionIndicator(nullptr)
-    , m_histogramItem(nullptr)
+    , m_imageItem(nullptr)
     , m_fontHeight(0)
     , m_bScrolling(false)
     , m_bBindMode(false)
     , m_bLocked(false)
+    , m_bUpdatingPos(false)
+    , m_bEmitChange(true)
 {
     setCacheMode(QGraphicsView::CacheNone);
     setTransformationAnchor(QGraphicsView::AnchorUnderMouse);
@@ -191,19 +193,13 @@ GraphicsSliderArea::GraphicsSliderArea(QWidget* _parent)
 
     setScene(new QGraphicsScene(this));
 
-    m_fontHeight = QFontMetrics(font()).height();
+    m_fontHeight = QFontMetrics(font()).height() + 1;
 
     EASY_CONSTEXPR int SceneHeight = 500;
     scene()->setSceneRect(0, -(SceneHeight >> 1), 500, SceneHeight);
 
-    m_histogramItem = new GraphicsHistogramItem();
-    scene()->addItem(m_histogramItem);
-
-    m_histogramItem->setPos(0, 0);
-    m_histogramItem->setBoundingRect(0, scene()->sceneRect().top() + margin(), scene()->width(), SceneHeight - margins() - 1);
-    m_histogramItem->hide();
-
     m_selectionIndicator = new GraphicsSliderItem(6, false);
+    m_selectionIndicator->setZValue(1);
     scene()->addItem(m_selectionIndicator);
 
     m_selectionIndicator->setPos(0, 0);
@@ -211,16 +207,38 @@ GraphicsSliderArea::GraphicsSliderArea(QWidget* _parent)
     m_selectionIndicator->hide();
 
     m_slider = new GraphicsSliderItem(6, true);
+    m_slider->setZValue(2);
     scene()->addItem(m_slider);
 
     m_slider->setPos(0, 0);
     m_slider->setColor(0x40c0c0c0);
     m_slider->hide();
 
-    connect(&EASY_GLOBALS.events, &profiler_gui::EasyGlobalSignals::threadNameDecorationChanged, this, &This::onThreadViewChanged);
-    connect(&EASY_GLOBALS.events, &profiler_gui::EasyGlobalSignals::hexThreadIdChanged, this, &This::onThreadViewChanged);
-
     centerOn(0, 0);
+
+    auto globalEvents = &EASY_GLOBALS.events;
+    connect(globalEvents, &profiler_gui::EasyGlobalSignals::sceneCleared, this, &This::clear);
+    connect(globalEvents, &profiler_gui::EasyGlobalSignals::sceneVisibleRegionSizeChanged, this, &This::setSliderWidth);
+    connect(globalEvents, &profiler_gui::EasyGlobalSignals::sceneVisibleRegionPosChanged, this, &This::setValue);
+
+    connect(globalEvents, &profiler_gui::EasyGlobalSignals::chartSliderChanged, [this] (qreal pos)
+    {
+        if (!m_bUpdatingPos)
+        {
+            m_bEmitChange = false;
+            setValue(pos);
+            m_bEmitChange = true;
+        }
+    });
+
+    connect(globalEvents, &profiler_gui::EasyGlobalSignals::sceneSizeChanged, [this] (qreal left, qreal right)
+    {
+        setRange(left, right);
+        m_slider->show();
+    });
+
+    connect(globalEvents, &profiler_gui::EasyGlobalSignals::lockCharts, this, &This::lock);
+    connect(globalEvents, &profiler_gui::EasyGlobalSignals::unlockCharts, this, &This::unlock);
 }
 
 GraphicsSliderArea::~GraphicsSliderArea()
@@ -232,10 +250,11 @@ GraphicsSliderArea::~GraphicsSliderArea()
 
 void GraphicsSliderArea::clear()
 {
-    m_selectionIndicator->hide();
     setRange(0, 100);
     setSliderWidth(2);
     setValue(0);
+    m_selectionIndicator->hide();
+    m_slider->hide();
 }
 
 //////////////////////////////////////////////////////////////////////////
@@ -299,10 +318,18 @@ int GraphicsSliderArea::margins() const
 
 void GraphicsSliderArea::setValue(qreal _value)
 {
-    using estd::clamp;
+    if (m_bUpdatingPos)
-    m_value = clamp(m_minimumValue, _value, std::max(m_minimumValue, m_maximumValue - m_slider->width()));
+        return;
+
+    const profiler_gui::BoolFlagGuard guard(m_bUpdatingPos, true);
+
+    m_value = estd::clamp(m_minimumValue, _value, std::max(m_minimumValue, m_maximumValue - m_slider->width()));
     m_slider->setX(m_value + m_slider->halfwidth());
-    emit valueChanged(m_value);
+
+    if (m_bEmitChange)
+    {
+        emit EASY_GLOBALS.events.chartSliderChanged(m_value);
+    }
 
     if (m_imageItem->isVisible())
         m_imageItem->onValueChanged();
@@ -324,8 +351,6 @@ void GraphicsSliderArea::setRange(qreal _minValue, qreal _maxValue)
     m_imageItem->cancelImageUpdate();
     m_imageItem->setBoundingRect(_minValue, histogramRect.top(), range, histogramRect.height());
 
-    emit rangeChanged();
-
     setValue(_minValue + oldValue * range);
 
     onWindowWidthChange(width());
@@ -432,7 +457,7 @@ void GraphicsSliderArea::mouseMoveEvent(QMouseEvent* _event)
         }
     }
 
-    m_imageItem->setMousePos(mapToScene(pos));
+    m_imageItem->setMousePos(pos.x(), mapToScene(pos).y());
     if (m_imageItem->isVisible())
         scene()->update();
 }
@@ -475,28 +500,52 @@ void GraphicsSliderArea::wheelEvent(QWheelEvent* _event)
     {
         const auto w = m_slider->halfwidth() * (_event->delta() < 0 ? profiler_gui::SCALING_COEFFICIENT : profiler_gui::SCALING_COEFFICIENT_INV);
         setValue(mapToScene(_event->pos()).x() - m_minimumValue - w);
-        emit wheeled(w * m_windowScale, _event->delta());
+        emit EASY_GLOBALS.events.chartWheeled(w * m_windowScale, _event->delta());
     }
     else
     {
         const auto x = (mapToScene(_event->pos()).x() - m_minimumValue) * m_windowScale;
-        emit wheeled(x, _event->delta());
+        emit EASY_GLOBALS.events.chartWheeled(x, _event->delta());
     }
 }
 
 void GraphicsSliderArea::resizeEvent(QResizeEvent* _event)
 {
     const int h = _event->size().height();
+
+    if (h == 0)
+    {
+        if (m_imageItem->isVisible())
+            m_imageItem->cancelImageUpdate();
+
+        onWindowWidthChange(_event->size().width());
+
+        return;
+    }
+
     if (_event->oldSize().height() != h)
     {
+        auto rect = scene()->sceneRect();
+
         const int sceneHeight = h - 2;
-        scene()->setSceneRect(0, -(sceneHeight >> 1), 500, sceneHeight);
+        const int top = -(sceneHeight >> 1);
+        scene()->setSceneRect(rect.left(), top, rect.width(), sceneHeight);
 
         const auto br = m_imageItem->boundingRect();
-        m_imageItem->setBoundingRect(br.left(), scene()->sceneRect().top() + margin(), br.width(), sceneHeight - margins() - 1);
+        m_imageItem->setBoundingRect(br.left(), top + margin(), br.width(), sceneHeight - margins() - 1);
+
+        rect = m_slider->rect();
+        m_slider->setRect(rect.left(), top, rect.width(), sceneHeight);
+
+        if (m_selectionIndicator->isVisible())
+        {
+            rect = m_selectionIndicator->rect();
+            m_selectionIndicator->setRect(rect.left(), top, rect.width(), sceneHeight);
+        }
     }
 
     onWindowWidthChange(_event->size().width());
+
     if (m_imageItem->isVisible())
         m_imageItem->updateImage();
 }

profiler_gui/graphics_slider_area.h

@@ -101,12 +101,13 @@ protected:
     Qt::MouseButtons             m_mouseButtons;
     GraphicsSliderItem*                m_slider;
     GraphicsSliderItem*    m_selectionIndicator;
-    GraphicsHistogramItem*      m_histogramItem;
     GraphicsImageItem*              m_imageItem;
     int                            m_fontHeight;
     bool                           m_bScrolling;
     bool                            m_bBindMode;
     bool                              m_bLocked;
+    bool                         m_bUpdatingPos;
+    bool                          m_bEmitChange;
 
 public:
 
@@ -121,6 +122,7 @@ public:
     void wheelEvent(QWheelEvent* _event) override;
     void resizeEvent(QResizeEvent* _event) override;
     void dragEnterEvent(QDragEnterEvent*) override {}
+    void contextMenuEvent(QContextMenuEvent*) override {}
 
     virtual void clear();
 
@@ -148,19 +150,10 @@ public:
     void showSelectionIndicator();
     void hideSelectionIndicator();
 
-    inline void lock() {
+public slots:
-        m_bLocked = true;
-    }
 
-    inline void unlock() {
+    void lock() { m_bLocked = true; }
-        m_bLocked = false;
+    void unlock() { m_bLocked = false; }
-    }
-
-signals:
-
-    void rangeChanged();
-    void valueChanged(qreal _value);
-    void wheeled(qreal _mouseX, int _wheelDelta);
 
 protected slots:
 

profiler_gui/main_window.cpp

@@ -215,6 +215,7 @@ EasyMainWindow::EasyMainWindow() : Parent(), m_theme("default"), m_lastAddress("
     m_graphicsView->setAllowedAreas(Qt::AllDockWidgetAreas);
 
     auto graphicsView = new EasyGraphicsViewWidget(this);
+    graphicsView->setObjectName("ProfilerGUI_Diagram_GraphicsView");
     m_graphicsView->setWidget(graphicsView);
 
     m_treeWidget = new EasyDockWidget("Hierarchy", this);
@@ -449,6 +450,16 @@ EasyMainWindow::EasyMainWindow() : Parent(), m_theme("default"), m_lastAddress("
         emit EASY_GLOBALS.events.autoAdjustHistogramChanged();
     });
 
+    action = submenu->addAction("Automatically adjust chart height");
+    action->setToolTip("Same as similar option for histogram\nbut used for arbitrary values charts.");
+    action->setCheckable(true);
+    action->setChecked(EASY_GLOBALS.auto_adjust_chart_height);
+    connect(action, &QAction::triggered, [](bool _checked)
+    {
+        EASY_GLOBALS.auto_adjust_chart_height = _checked;
+        emit EASY_GLOBALS.events.autoAdjustChartChanged();
+    });
+
     action = submenu->addAction("Use decorated thread names");
     action->setToolTip("Add \'Thread\' word into thread name if there is no one already.\nExamples: \'Render\' will change to \'Render Thread\'\n\'WorkerThread\' will not change.");
     action->setCheckable(true);
@@ -1236,7 +1247,6 @@ void EasyMainWindow::onEditBlocksClicked(bool)
     m_descTreeDialog = new QDialog();
     m_descTreeDialog->setAttribute(Qt::WA_DeleteOnClose, true);
     m_descTreeDialog->setWindowTitle(EASY_DEFAULT_WINDOW_TITLE);
-    m_descTreeDialog->resize(800, 600);
     connect(m_descTreeDialog, &QDialog::finished, this, &This::onDescTreeDialogClose);
 
     auto l = new QVBoxLayout(m_descTreeDialog);
@@ -1379,6 +1389,10 @@ void EasyMainWindow::loadSettings()
     if (!flag.isNull())
         EASY_GLOBALS.auto_adjust_histogram_height = flag.toBool();
 
+    flag = settings.value("auto_adjust_chart_height");
+    if (!flag.isNull())
+        EASY_GLOBALS.auto_adjust_chart_height = flag.toBool();
+
     flag = settings.value("display_only_frames_on_histogram");
     if (!flag.isNull())
         EASY_GLOBALS.display_only_frames_on_histogram = flag.toBool();
@@ -1434,6 +1448,16 @@ void EasyMainWindow::loadGeometry()
     if (!geometry.isEmpty())
         restoreGeometry(geometry);
 
+    geometry = settings.value("fpsGeometry").toByteArray();
+    if (!geometry.isEmpty())
+        m_fpsViewer->restoreGeometry(geometry);
+
+    geometry = settings.value("diagramGeometry").toByteArray();
+    if (!geometry.isEmpty())
+        m_graphicsView->restoreGeometry(geometry);
+
+    static_cast<EasyGraphicsViewWidget*>(m_graphicsView->widget())->restore(settings);
+
     auto state = settings.value("windowState").toByteArray();
     if (!state.isEmpty())
         restoreState(state);
@@ -1447,7 +1471,12 @@ void EasyMainWindow::saveSettingsAndGeometry()
     settings.beginGroup("main");
 
     settings.setValue("geometry", this->saveGeometry());
+    settings.setValue("fpsGeometry", m_fpsViewer->saveGeometry());
+    settings.setValue("diagramGeometry", m_graphicsView->saveGeometry());
+    static_cast<EasyGraphicsViewWidget*>(m_graphicsView->widget())->save(settings);
+
     settings.setValue("windowState", this->saveState());
+
     settings.setValue("last_files", m_lastFiles);
     settings.setValue("ip_address", m_lastAddress);
     settings.setValue("port", (quint32)m_lastPort);
@@ -1470,6 +1499,7 @@ void EasyMainWindow::saveSettingsAndGeometry()
     settings.setValue("selecting_block_changes_thread", EASY_GLOBALS.selecting_block_changes_thread);
     settings.setValue("enable_event_indicators", EASY_GLOBALS.enable_event_markers);
     settings.setValue("auto_adjust_histogram_height", EASY_GLOBALS.auto_adjust_histogram_height);
+    settings.setValue("auto_adjust_chart_height", EASY_GLOBALS.auto_adjust_chart_height);
     settings.setValue("display_only_frames_on_histogram", EASY_GLOBALS.display_only_frames_on_histogram);
     settings.setValue("use_decorated_thread_name", EASY_GLOBALS.use_decorated_thread_name);
     settings.setValue("hex_thread_id", EASY_GLOBALS.hex_thread_id);

profiler_gui/themes/default.css

@@ -30,6 +30,12 @@ QToolTip {
 QGraphicsView {
   border: 1px solid #cccccc; }
 
+QSplitter::handle:hover {
+  background-color: rgba(244, 67, 54, 0.5); }
+
+QSplitter::handle:pressed {
+  background-color: #f44336; }
+
 /* ****************************************************************************************************************** */
 QLineEdit, QComboBox, QSpinBox {
   height: 24px;

profiler_gui/themes/default.scss

@@ -55,6 +55,14 @@ QGraphicsView {
     border: 1px solid $BorderColor;
 }
 
+QSplitter::handle:hover {
+    background-color: rgb_a($MainColor, 0.5);
+}
+
+QSplitter::handle:pressed {
+    background-color: $MainColor;
+}
+
 /* ****************************************************************************************************************** */
 QLineEdit, QComboBox, QSpinBox {
     height: $DefaultHeight;