renderer.h

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/*
 * SPDX-FileCopyrightText: 2022 Louis Moureaux <m_louis30@yahoo.com>
 *
 * SPDX-License-Identifier: GPLv3-or-later
 */
 
#pragma once
 
#include <QObject>
#include <QPainter>
#include <QPointF>
#include <QRect>
#include <QRegion>
#include <QSize>
 
namespace freeciv {
 
class map_updates_handler;
 
class renderer : public QObject {
  Q_OBJECT
  Q_PROPERTY(QPointF origin READ origin WRITE set_origin);
  Q_PROPERTY(double scale READ scale WRITE set_scale);
 
public:
  explicit renderer(QObject *parent = nullptr);
  virtual ~renderer() = default;
 
  QPointF origin() const { return m_origin; }
  void set_origin(const QPointF &origin);
 
  double scale() const { return m_scale; }
  void set_scale(double scale);
 
  QSize viewport_size() const { return m_viewport_size; }
  void set_viewport_size(const QSize &size);
 
  void render(QPainter &painter, const QRegion &region) const;
  void render(QPainter &painter, const QRect &area) const;
 
signals:
  void repaint_needed(const QRegion &where);
 
private slots:
  void unqueue_updates();
 
private:
  QPointF m_origin;
  double m_scale = 1.0;
  QSize m_viewport_size;
  map_updates_handler *m_updates;
};
 
} // namespace freeciv