cutter/src/widgets/GraphView.h
Vanellope 0be50ac36f Overview optimization (#1262)
* Overview optimization
* Better cache algorithm
* Fix a bug of the multiple graphs
2019-03-12 09:37:10 +02:00

202 lines
5.5 KiB
C++

#ifndef GRAPHVIEW_H
#define GRAPHVIEW_H
#include <QObject>
#include <QPainter>
#include <QWidget>
#include <QAbstractScrollArea>
#include <QScrollBar>
#include <QElapsedTimer>
#include <QHelpEvent>
#include <unordered_map>
#include <unordered_set>
#include <queue>
#include "core/Cutter.h"
class GraphView : public QAbstractScrollArea
{
Q_OBJECT
enum class LayoutType {
Medium,
Wide,
Narrow,
};
signals:
void refreshBlock();
public:
struct GraphBlock;
struct Point {
int row; //point[0]
int col; //point[1]
int index; //point[2]
};
struct GraphEdge {
QColor color;
GraphBlock *dest;
std::vector<Point> points;
int start_index = 0;
QPolygonF polyline;
QPolygonF arrow_start;
QPolygonF arrow_end;
void addPoint(int row, int col, int index = 0)
{
Point point = {row, col, 0};
this->points.push_back(point);
if (int(this->points.size()) > 1)
this->points[this->points.size() - 2].index = index;
}
};
struct GraphBlock {
int x = 0;
int y = 0;
int width = 0;
int height = 0;
// This is a unique identifier, e.g. offset in the case of r2 blocks
ut64 entry;
// This contains unique identifiers to entries
// Outgoing edges
std::vector<ut64> exits;
// Incoming edges
std::vector<ut64> incoming;
// TODO what is this
std::vector<ut64> new_exits;
// Number of rows in block
int row_count = 0;
// Number of columns in block
int col_count = 0;
// Column in which the block is
int col = 0;
// Row in which the block is
int row = 0;
// Edges
std::vector<GraphEdge> edges;
};
struct EdgeConfiguration {
QColor color = QColor(128, 128, 128);
bool start_arrow = false;
bool end_arrow = true;
qreal width_scale = 1.0;
};
explicit GraphView(QWidget *parent);
~GraphView() override;
void paintEvent(QPaintEvent *event) override;
void showBlock(GraphBlock &block);
void showBlock(GraphBlock *block);
// Zoom data
qreal current_scale = 1.0;
int offset_x = 0;
int offset_y = 0;
/**
* @brief flag to control if the cached pixmap should be used
*/
bool useCache = false;
/**
* @brief keep the current addr of the fcn of Graph
* Everytime overview updates its contents, it compares this value with the one in Graph
* if they aren't same, then Overview needs to update the pixmap cache.
*/
ut64 currentFcnAddr = 0;
protected:
std::unordered_map<ut64, GraphBlock> blocks;
QColor backgroundColor = QColor(Qt::white);
// The vertical margin between blocks
int block_vertical_margin = 40;
int block_horizontal_margin = 10;
// Padding inside the block
int block_padding = 16;
void addBlock(GraphView::GraphBlock block);
void setEntry(ut64 e);
void computeGraph(ut64 entry);
// Callbacks that should be overridden
virtual void drawBlock(QPainter &p, GraphView::GraphBlock &block);
virtual void blockClicked(GraphView::GraphBlock &block, QMouseEvent *event, QPoint pos);
virtual void blockDoubleClicked(GraphView::GraphBlock &block, QMouseEvent *event, QPoint pos);
virtual void blockHelpEvent(GraphView::GraphBlock &block, QHelpEvent *event, QPoint pos);
virtual bool helpEvent(QHelpEvent *event);
virtual void blockTransitionedTo(GraphView::GraphBlock *to);
virtual void wheelEvent(QWheelEvent *event) override;
virtual EdgeConfiguration edgeConfiguration(GraphView::GraphBlock &from, GraphView::GraphBlock *to);
void drawGraph();
bool event(QEvent *event) override;
// Mouse events
void mousePressEvent(QMouseEvent *event) override;
void mouseMoveEvent(QMouseEvent *event) override;
void mouseReleaseEvent(QMouseEvent *event) override;
void mouseDoubleClickEvent(QMouseEvent *event) override;
void center();
void centerX();
void centerY();
int width = 0;
int height = 0;
/**
* @brief pixmap that caches the graph nodes
*/
QPixmap pixmap;
private:
bool checkPointClicked(QPointF &point, int x, int y, bool above_y = false);
ut64 entry;
void computeGraphLayout(GraphBlock &block);
void adjustGraphLayout(GraphBlock &block, int col, int row);
// Layout type
LayoutType layoutType = LayoutType::Medium;
bool ready = false;
// Scrolling data
int scroll_base_x = 0;
int scroll_base_y = 0;
bool scroll_mode = false;
// Todo: remove charheight/charwidth cause it should be handled in child class
qreal charWidth = 10.0;
// Edge computing stuff
template<typename T>
using Matrix = std::vector<std::vector<T>>;
using EdgesVector = Matrix<std::vector<bool>>;
std::vector<int> col_edge_x;
std::vector<int> row_edge_y;
bool isEdgeMarked(EdgesVector &edges, int row, int col, int index);
void markEdge(EdgesVector &edges, int row, int col, int index, bool used = true);
int findHorizEdgeIndex(EdgesVector &edges, int row, int min_col, int max_col);
int findVertEdgeIndex(EdgesVector &edges, int col, int min_row, int max_row);
GraphEdge routeEdge(EdgesVector &horiz_edges, EdgesVector &vert_edges, Matrix<bool> &edge_valid,
GraphBlock &start, GraphBlock &end, QColor color);
QPolygonF recalculatePolygon(QPolygonF polygon);
};
#endif // GRAPHVIEW_H