NNFS/canvas_8h_source.html

#ifndef CANVAS_H

#define CANVAS_H


#include <QWidget>

#include <QLabel>

#include <QVBoxLayout>

#include <QMouseEvent>

#include <QPainter>

#include <Eigen/Core>


class Canvas : public QLabel

{

    Q_OBJECT


public:

    explicit Canvas(QWidget *parent = nullptr);


    void clearImage();


    void restartCanvas();


    Eigen::MatrixXd getMatrix();


    bool isDrawing() { return drawing; }


protected:

    void mousePressEvent(QMouseEvent *event) override;


    void mouseMoveEvent(QMouseEvent *event) override;


    void mouseReleaseEvent(QMouseEvent *event) override;


private:

    bool drawing;

    QImage image;

    QPointF lastPoint;

    Eigen::MatrixXd image_matrix = Eigen::MatrixXd::Zero(1, 784);

};


#endif // CANVAS_H

Canvas
The Canvas class represents a custom widget for drawing on a canvas.
Definition canvas.h:17

Canvas::mouseReleaseEvent
void mouseReleaseEvent(QMouseEvent *event) override
Handles the mouse release event.
Definition canvas.cpp:54

Canvas::clearImage
void clearImage()
Clears the image on the canvas.
Definition canvas.cpp:13

Canvas::getMatrix
Eigen::MatrixXd getMatrix()
Gets the matrix representation of the image on the canvas.
Definition canvas.cpp:24

Canvas::isDrawing
bool isDrawing()
Checks if the user is currently drawing on the canvas.
Definition canvas.h:50

Canvas::mousePressEvent
void mousePressEvent(QMouseEvent *event) override
Handles the mouse press event.
Definition canvas.cpp:29

Canvas::restartCanvas
void restartCanvas()
Restarts the canvas by clearing the image and resetting the drawing state.
Definition canvas.cpp:19

Canvas::mouseMoveEvent
void mouseMoveEvent(QMouseEvent *event) override
Handles the mouse move event.
Definition canvas.cpp:38