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easy_profiler/profiler_gui/easy_graphics_scrollbar.h

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/************************************************************************
* file name : easy_graphics_scrollbar.h
* ----------------- :
* creation time : 2016/07/04
* author : Victor Zarubkin
* email : v.s.zarubkin@gmail.com
* ----------------- :
* description : This file contains declaration of
* ----------------- :
* change log : * 2016/07/04 Victor Zarubkin: Initial commit.
* :
* : *
* ----------------- :
* license : Lightweight profiler library for c++
* : Copyright(C) 2016-2017 Sergey Yagovtsev, Victor Zarubkin
* :
* : Licensed under either of
* : * MIT license (LICENSE.MIT or http://opensource.org/licenses/MIT)
* : * Apache License, Version 2.0, (LICENSE.APACHE or http://www.apache.org/licenses/LICENSE-2.0)
* : at your option.
* :
* : The MIT License
* :
* : Permission is hereby granted, free of charge, to any person obtaining a copy
* : of this software and associated documentation files (the "Software"), to deal
* : in the Software without restriction, including without limitation the rights
* : to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
* : of the Software, and to permit persons to whom the Software is furnished
* : to do so, subject to the following conditions:
* :
* : The above copyright notice and this permission notice shall be included in all
* : copies or substantial portions of the Software.
* :
* : THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
* : INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
* : PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* : LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* : TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
* : USE OR OTHER DEALINGS IN THE SOFTWARE.
* :
* : The Apache License, Version 2.0 (the "License")
* :
* : You may not use this file except in compliance with the License.
* : You may obtain a copy of the License at
* :
* : http://www.apache.org/licenses/LICENSE-2.0
* :
* : Unless required by applicable law or agreed to in writing, software
* : distributed under the License is distributed on an "AS IS" BASIS,
* : WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* : See the License for the specific language governing permissions and
* : limitations under the License.
************************************************************************/
#ifndef EASY__GRAPHICS_SCROLLBAR__H
#define EASY__GRAPHICS_SCROLLBAR__H
#include <stdlib.h>
#include <thread>
#include <atomic>
#include <QGraphicsView>
#include <QGraphicsRectItem>
#include <QAction>
#include <QPolygonF>
#include <QImage>
#include "easy_qtimer.h"
#include "common_types.h"
//////////////////////////////////////////////////////////////////////////
// TODO: use profiler_core/spin_lock.h
#define EASY_GUI_USE_CRITICAL_SECTION // Use CRITICAL_SECTION instead of std::atomic_flag
#if defined(_WIN32) && defined(EASY_GUI_USE_CRITICAL_SECTION)
namespace profiler_gui {
// std::atomic_flag on Windows works slower than critical section, so we will use it instead of std::atomic_flag...
// By the way, Windows critical sections are slower than std::atomic_flag on Unix.
class spin_lock { void* m_lock; public:
void lock();
void unlock();
spin_lock();
~spin_lock();
};
#else
namespace profiler_gui {
// std::atomic_flag on Unix works fine and very fast (almost instant!)
class spin_lock {
::std::atomic_flag m_lock; public:
void lock() {
while (m_lock.test_and_set(::std::memory_order_acquire));
}
void unlock() {
m_lock.clear(::std::memory_order_release);
}
spin_lock() {
m_lock.clear();
}
};
#endif
} // END of namespace profiler_gui.
//////////////////////////////////////////////////////////////////////////
class EasyGraphicsSliderItem : public QGraphicsRectItem
{
typedef QGraphicsRectItem Parent;
typedef EasyGraphicsSliderItem This;
private:
QPolygonF m_indicator;
qreal m_halfwidth;
bool m_bMain;
public:
explicit EasyGraphicsSliderItem(bool _main);
virtual ~EasyGraphicsSliderItem();
void paint(QPainter* _painter, const QStyleOptionGraphicsItem* _option, QWidget* _widget = nullptr) override;
qreal width() const;
qreal halfwidth() const;
void setWidth(qreal _width);
void setHalfwidth(qreal _halfwidth);
void setColor(QRgb _color);
void setColor(const QColor& _color);
}; // END of class EasyGraphicsSliderItem.
//////////////////////////////////////////////////////////////////////////
class EasyHistogramItem : public QGraphicsItem
{
typedef QGraphicsItem Parent;
typedef EasyHistogramItem This;
public:
enum HistRegime : uint8_t { Hist_Pointer, Hist_Id };
private:
QRectF m_boundingRect;
qreal m_topDuration;
qreal m_bottomDuration;
qreal m_maxDuration;
qreal m_minDuration;
qreal m_mouseY;
qreal m_imageOrigin;
qreal m_imageScale;
qreal m_imageOriginUpdate;
qreal m_imageScaleUpdate;
qreal m_workerImageOrigin;
qreal m_workerImageScale;
qreal m_workerTopDuration;
qreal m_workerBottomDuration;
::profiler::timestamp_t m_blockTotalDuraion;
QString m_topDurationStr;
QString m_bottomDurationStr;
QString m_threadName;
QString m_blockName;
::profiler::BlocksTree::children_t m_selectedBlocks;
QImage m_mainImage;
EasyQTimer m_timer;
EasyQTimer m_boundaryTimer;
::std::thread m_workerThread;
::profiler::timestamp_t m_threadDuration;
::profiler::timestamp_t m_threadProfiledTime;
::profiler::timestamp_t m_threadWaitTime;
const ::profiler_gui::EasyItems* m_pSource;
QImage* m_workerImage;
const ::profiler::BlocksTreeRoot* m_pProfilerThread;
::profiler::thread_id_t m_threadId;
::profiler::block_index_t m_blockId;
int m_timeouts;
::profiler_gui::TimeUnits m_timeUnits;
HistRegime m_regime;
bool m_bPermitImageUpdate; ///< Is false when m_workerThread is parsing input dataset (when setSource(_block_id) is called)
::profiler_gui::spin_lock m_spin;
::std::atomic_bool m_bReady;
public:
explicit EasyHistogramItem();
virtual ~EasyHistogramItem();
// Public virtual methods
QRectF boundingRect() const override;
void paint(QPainter* _painter, const QStyleOptionGraphicsItem* _option, QWidget* _widget = nullptr) override;
public:
// Public non-virtual methods
::profiler::thread_id_t threadId() const;
void setBoundingRect(const QRectF& _rect);
void setBoundingRect(qreal x, qreal y, qreal w, qreal h);
void setSource(::profiler::thread_id_t _thread_id, const ::profiler_gui::EasyItems* _items);
void setSource(::profiler::thread_id_t _thread_id, ::profiler::block_id_t _block_id);
void rebuildSource(HistRegime _regime);
void rebuildSource();
void validateName();
void updateImage();
void cancelImageUpdate();
void pickTopBoundary(qreal _y);
void increaseTopBoundary();
void decreaseTopBoundary();
void pickBottomBoundary(qreal _y);
void increaseBottomBoundary();
void decreaseBottomBoundary();
void setMouseY(qreal _mouseY);
void pickFrameTime(qreal _y) const;
void onValueChanged();
void onModeChanged();
private:
void paintBusyIndicator(QPainter* _painter, qreal _current_scale);
void paintMouseIndicator(QPainter* _painter, qreal _top, qreal _bottom, qreal _width, qreal _height, qreal _top_width, qreal _mouse_y, qreal _delta_time, int _font_h);
void paintByPtr(QPainter* _painter);
void paintById(QPainter* _painter);
void onTimeout();
void updateImage(QRectF _boundingRect, HistRegime _regime, qreal _current_scale,
qreal _minimum, qreal _maximum, qreal _range,
qreal _value, qreal _width, qreal _top_duration, qreal _bottom_duration, bool _bindMode,
float _frame_time, ::profiler::timestamp_t _begin_time, qreal _origin, bool _autoAdjustHist);
}; // END of class EasyHistogramItem.
//////////////////////////////////////////////////////////////////////////
class EasyGraphicsScrollbar : public QGraphicsView
{
Q_OBJECT
private:
typedef QGraphicsView Parent;
typedef EasyGraphicsScrollbar This;
qreal m_minimumValue;
qreal m_maximumValue;
qreal m_value;
qreal m_windowScale;
QPoint m_mousePressPos;
Qt::MouseButtons m_mouseButtons;
EasyGraphicsSliderItem* m_slider;
EasyGraphicsSliderItem* m_chronometerIndicator;
EasyHistogramItem* m_histogramItem;
int m_defaultFontHeight;
bool m_bScrolling;
bool m_bBindMode;
bool m_bLocked;
public:
explicit EasyGraphicsScrollbar(QWidget* _parent = nullptr);
virtual ~EasyGraphicsScrollbar();
// Public virtual methods
void mousePressEvent(QMouseEvent* _event) override;
void mouseReleaseEvent(QMouseEvent* _event) override;
void mouseMoveEvent(QMouseEvent* _event) override;
void wheelEvent(QWheelEvent* _event) override;
void resizeEvent(QResizeEvent* _event) override;
void dragEnterEvent(QDragEnterEvent*) override {}
public:
// Public non-virtual methods
void clear();
bool bindMode() const;
qreal getWindowScale() const;
::profiler::thread_id_t hystThread() const;
qreal minimum() const;
qreal maximum() const;
qreal range() const;
qreal value() const;
qreal sliderWidth() const;
qreal sliderHalfWidth() const;
int defaultFontHeight() const;
void setValue(qreal _value);
void setRange(qreal _minValue, qreal _maxValue);
void setSliderWidth(qreal _width);
void setChronoPos(qreal _left, qreal _right);
void showChrono();
void hideChrono();
void setHistogramSource(::profiler::thread_id_t _thread_id, const::profiler_gui::EasyItems* _items);
void setHistogramSource(::profiler::thread_id_t _thread_id, ::profiler::block_id_t _block_id);
inline void setHistogramSource(::profiler::thread_id_t _thread_id, const ::profiler_gui::EasyItems& _items)
{
setHistogramSource(_thread_id, &_items);
}
inline void lock()
{
m_bLocked = true;
}
inline void unlock()
{
m_bLocked = false;
}
signals:
void rangeChanged();
void valueChanged(qreal _value);
void wheeled(qreal _mouseX, int _wheelDelta);
private slots:
void onThreadViewChanged();
void onWindowWidthChange(qreal _width);
}; // END of class EasyGraphicsScrollbar.
//////////////////////////////////////////////////////////////////////////
#endif // EASY__GRAPHICS_SCROLLBAR__H
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