78 lines
1.8 KiB
C++
78 lines
1.8 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#pragma once
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#include <base/unique_qptr.h>
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#include <editor/photo_editor_inner_common.h>
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#include <QGraphicsScene>
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class QGraphicsSceneMouseEvent;
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namespace Ui {
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class RpWidget;
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} // namespace Ui
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namespace Editor {
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class ItemCanvas;
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class NumberedItem;
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class Scene final : public QGraphicsScene {
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public:
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using ItemPtr = std::shared_ptr<NumberedItem>;
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Scene(const QRectF &rect);
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~Scene();
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void applyBrush(const QColor &color, float size);
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[[nodiscard]] std::vector<ItemPtr> items(
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Qt::SortOrder order = Qt::DescendingOrder) const;
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void addItem(ItemPtr item);
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void removeItem(not_null<QGraphicsItem*> item);
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void removeItem(const ItemPtr &item);
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[[nodiscard]] rpl::producer<> addsItem() const;
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[[nodiscard]] rpl::producer<> removesItem() const;
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[[nodiscard]] std::shared_ptr<float64> lastZ() const;
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void updateZoom(float64 zoom);
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void cancelDrawing();
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[[nodiscard]] bool hasUndo() const;
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[[nodiscard]] bool hasRedo() const;
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void performUndo();
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void performRedo();
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void save(SaveState state);
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void restore(SaveState state);
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void clearRedoList();
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protected:
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void mousePressEvent(QGraphicsSceneMouseEvent *event) override;
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void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) override;
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void mouseMoveEvent(QGraphicsSceneMouseEvent *event) override;
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private:
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void removeIf(Fn<bool(const ItemPtr &)> proj);
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const std::shared_ptr<ItemCanvas> _canvas;
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const std::shared_ptr<float64> _lastZ;
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std::vector<ItemPtr> _items;
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float64 _lastLineZ = 0.;
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int _itemNumber = 0;
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rpl::event_stream<> _addsItem, _removesItem;
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rpl::lifetime _lifetime;
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};
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} // namespace Editor
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