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engines/pegasus/items/itemdragger.h

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * Additional copyright for this file:
+ * Copyright (C) 1995-1997 Presto Studios, Inc.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef PEGASUS_ITEMS_ITEMDRAGGER_H
+#define PEGASUS_ITEMS_ITEMDRAGGER_H
+
+#include "pegasus/elements.h"
+#include "pegasus/input.h"
+
+namespace Pegasus {
+
+// TODO: Merge SpriteDragger and ItemDragger
+
+class Hotspot;
+class Sprite;
+
+class SpriteDragger : public Tracker {
+public:
+	SpriteDragger();
+	~SpriteDragger() override {}
+
+	void setDragSprite(Sprite *);
+	Sprite *getDragSprite() { return _draggingSprite; }
+
+	void setDragConstraints(const Common::Rect &, const Common::Rect &);
+	void getDragConstraints(Common::Rect &, Common::Rect &) const;
+
+	void startTracking(const Input &) override;
+	void continueTracking(const Input&) override;
+
+	Hotspot *getLastHotspot() const { return _lastHotspot; }
+
+protected:
+	virtual void enterHotspot(Hotspot *) {}
+	virtual void exitHotspot(Hotspot *) {}
+
+	Sprite *_draggingSprite;
+	Common::Point _startPoint, _lastPoint, _dragOffset;
+	Common::Point _startRawPoint, _lastRawPoint;
+	Common::Rect _rawLimitRect;
+	Common::Rect _limitRect;
+	Common::Rect _slopRect;
+	Hotspot *_lastHotspot;
+
+	// This is a replica of QuickDraw's PinPointInRect function
+	void pinPointInRect(const Common::Rect &, Common::Point &);
+};
+
+class PegasusEngine;
+
+class ItemDragger : public SpriteDragger {
+public:
+	ItemDragger(PegasusEngine *);
+	~ItemDragger() override {}
+
+	void setHighlightBounds();
+	void startTracking(const Input &) override;
+	void stopTracking(const Input &) override;
+	bool stopTrackingInput(const Input &) override;
+
+protected:
+	void enterHotspot(Hotspot *) override;
+	void exitHotspot(Hotspot *) override;
+
+	PegasusEngine *_owner;
+	DropHighlight _inventoryHighlight;
+	Hotspot _inventoryDropSpot;
+	DropHighlight _biochipHighlight;
+	Hotspot _biochipDropSpot;
+};
+
+} // End of namespace Pegasus
+
+#endif