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easy_profiler/profiler_gui/blocks_graphics_view.h

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/************************************************************************
* file name : blocks_graphics_view.h
* ----------------- :
* creation time : 2016/06/26
* copyright : (c) 2016 Victor Zarubkin
* author : Victor Zarubkin
* email : v.s.zarubkin@gmail.com
* ----------------- :
* description : The file contains declaration of GraphicsScene and GraphicsView and
* : it's auxiliary classes for displyaing easy_profiler blocks tree.
* ----------------- :
* change log : * 2016/06/26 Victor Zarubkin: moved sources from graphics_view.h
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* : and renamed classes from My* to Prof*.
* :
* : * 2016/06/29 Victor Zarubkin: Highly optimized painting performance and memory consumption.
* :
* : * 2016/06/30 Victor Zarubkin: Replaced doubles with floats (in ProfBlockItem) for less memory consumption.
* :
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* : *
* ----------------- :
* license : TODO: add license text
************************************************************************/
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#ifndef MY____GRAPHICS___VIEW_H
#define MY____GRAPHICS___VIEW_H
#include <QGraphicsView>
#include <QGraphicsScene>
#include <QGraphicsPolygonItem>
#include <QGraphicsSimpleTextItem>
#include <QPoint>
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#include <stdlib.h>
#include <vector>
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#include "profiler/reader.h"
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#define DRAW_METHOD 2
typedef float preal;
#pragma pack(push, 1)
struct ProfBlockItem
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{
const BlocksTree* block;
preal x, y, w, h;
float totalHeight;
QRgb color;
#if DRAW_METHOD > 0
unsigned int children_begin;
#else
bool draw;
#endif
void setRect(preal _x, preal _y, preal _w, preal _h);
preal left() const;
preal top() const;
preal width() const;
preal height() const;
preal right() const;
preal bottom() const;
};
#pragma pack(pop)
class ProfGraphicsItem : public QGraphicsItem
{
typedef ::std::vector<ProfBlockItem> Children;
#if DRAW_METHOD == 2
typedef ::std::vector<unsigned int> DrawIndexes;
DrawIndexes m_levelsIndexes;
typedef ::std::vector<Children> Sublevels;
Sublevels m_levels;
#else
Children m_items;
#endif
QRectF m_rect;
const bool m_bTest;
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public:
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ProfGraphicsItem();
ProfGraphicsItem(bool _test);
virtual ~ProfGraphicsItem();
QRectF boundingRect() const override;
void paint(QPainter* _painter, const QStyleOptionGraphicsItem* _option, QWidget* _widget = nullptr) override;
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void setBoundingRect(qreal x, qreal y, qreal w, qreal h);
void setBoundingRect(const QRectF& _rect);
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#if DRAW_METHOD == 0
void reserve(size_t _items);
const Children& items() const;
const ProfBlockItem& getItem(size_t _index) const;
ProfBlockItem& getItem(size_t _index);
size_t addItem();
size_t addItem(const ProfBlockItem& _item);
size_t addItem(ProfBlockItem&& _item);
#else
void setLevels(unsigned short _levels);
void reserve(unsigned short _level, size_t _items);
const Children& items(unsigned short _level) const;
const ProfBlockItem& getItem(unsigned short _level, size_t _index) const;
ProfBlockItem& getItem(unsigned short _level, size_t _index);
size_t addItem(unsigned short _level);
size_t addItem(unsigned short _level, const ProfBlockItem& _item);
size_t addItem(unsigned short _level, ProfBlockItem&& _item);
#endif
}; // END of class ProfGraphicsItem.
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/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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class ProfGraphicsScene : public QGraphicsScene
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{
friend class ProfGraphicsView;
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Q_OBJECT
private:
typedef ProfGraphicsScene This;
::profiler::timestamp_t m_beginTime;
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public:
ProfGraphicsScene(QGraphicsView* _parent, bool _test = false);
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ProfGraphicsScene(const thread_blocks_tree_t& _blocksTree, QGraphicsView* _parent);
virtual ~ProfGraphicsScene();
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private:
void test(size_t _frames_number, size_t _total_items_number_estimate, int _depth);
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void clearSilent();
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void setTree(const thread_blocks_tree_t& _blocksTree);
qreal setTree(const BlocksTree::children_t& _children, qreal& _height, qreal _y);
qreal setTree(ProfGraphicsItem* _item, const BlocksTree::children_t& _children, qreal& _height, qreal _y, unsigned int _level);
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inline qreal time2position(const profiler::timestamp_t& _time) const
{
return qreal(_time - m_beginTime) * 1e-6;
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}
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}; // END of class ProfGraphicsScene.
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/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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class ProfGraphicsView : public QGraphicsView
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{
Q_OBJECT
private:
typedef ProfGraphicsView This;
QRectF m_visibleSceneRect;
qreal m_scale;
qreal m_scaleCoeff;
QPoint m_mousePressPos;
Qt::MouseButtons m_mouseButtons;
bool m_bUpdatingRect;
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public:
ProfGraphicsView(bool _test = false);
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ProfGraphicsView(const thread_blocks_tree_t& _blocksTree);
virtual ~ProfGraphicsView();
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void wheelEvent(QWheelEvent* _event) override;
void mousePressEvent(QMouseEvent* _event) override;
void mouseReleaseEvent(QMouseEvent* _event) override;
void mouseMoveEvent(QMouseEvent* _event) override;
inline qreal currentScale() const
{
return m_scale;
}
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inline const QRectF& visibleSceneRect() const
{
return m_visibleSceneRect;
}
void setTree(const thread_blocks_tree_t& _blocksTree);
void clearSilent();
void test(size_t _frames_number, size_t _total_items_number_estimate, int _depth);
private:
void initMode();
void updateVisibleSceneRect();
private slots:
void onScrollbarValueChange(int);
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}; // END of class ProfGraphicsView.
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/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#endif // MY____GRAPHICS___VIEW_H