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engines/ultima/ultima8/gumps/item_relative_gump.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.
+ *
+ * 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 ULTIMA8_GUMPS_ITEMRELATIVEGUMP_H
+#define ULTIMA8_GUMPS_ITEMRELATIVEGUMP_H
+
+#include "ultima/ultima8/gumps/gump.h"
+#include "ultima/ultima8/misc/classtype.h"
+
+namespace Ultima {
+namespace Ultima8 {
+
+/**
+ * Base class for gumps whose location is relative to an owning item (eg, inventory, bark, etc)
+ */
+class ItemRelativeGump : public Gump {
+protected:
+	int32 _ix, _iy;
+
+public:
+	ENABLE_RUNTIME_CLASSTYPE()
+
+	ItemRelativeGump();
+	ItemRelativeGump(int32 x, int32 y, int32 width, int32 height, uint16 owner, uint32 flags = 0, int32 layer = LAYER_NORMAL);
+	~ItemRelativeGump() override;
+
+	void        InitGump(Gump *newparent, bool take_focus = true) override;
+
+	// Paint the Gump (RenderSurface is relative to parent).
+	// Calls PaintThis and PaintChildren.
+	void        Paint(RenderSurface *, int32 lerp_factor, bool scaled) override;
+
+	void        ParentToGump(int32 &px, int32 &py,
+	                                 PointRoundDir r = ROUND_TOPLEFT) override;
+	void        GumpToParent(int32 &gx, int32 &gy,
+	                                 PointRoundDir r = ROUND_TOPLEFT) override;
+
+	void        Move(int32 x, int32 y) override;
+
+	bool                loadData(Common::ReadStream *rs, uint32 version);
+protected:
+	void        saveData(Common::WriteStream *ws) override;
+
+	virtual void        GetItemLocation(int32 lerp_factor);
+
+	//! Move Gump so that it totally overlaps parent.
+	void                MoveOnScreen();
+};
+
+} // End of namespace Ultima8
+} // End of namespace Ultima
+
+#endif