coloriage Code

#include "undocommand.h"
#include "dessin.h"

Undo_Command::Undo_Command(QWidget *dessin, QImage *image,
                           std::unique_ptr <Shape>&&s) :
    dessin(dessin), image(image),
    undoImage(image->copy(s->rect())), shape(std::move(s))
{
}

void Undo_Command::undo()
{
    const QRect rect = shape->rect();
    QPainter    painter(image);

    painter.drawImage(rect, undoImage);
    dessin->update(rect);
}

void Undo_Command::redo()
{
    QPainter painter(image);

    shape->draw(painter);
    dessin->update(shape->rect());
}