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engines/ultima/nuvie/views/draggable_view.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 NUVIE_VIEWS_INVENTORY_FONT_H
+#define NUVIE_VIEWS_INVENTORY_FONT_H
+
+#include "ultima/nuvie/views/view.h"
+#include "graphics/managed_surface.h"
+
+namespace Ultima {
+namespace Nuvie {
+
+class Configuration;
+class GUI_Button;
+
+class DraggableView: public View {
+protected:
+	Graphics::ManagedSurface *bg_image;
+	uint32 bg_color_key;
+
+private:
+	bool drag, need_full_redraw_when_moved, always_need_full_redraw_when_moved;
+	int button_x, button_y;
+
+public:
+	DraggableView(const Configuration *config);
+	~DraggableView() override;
+
+	/* events, used for dragging the area. */
+	GUI_status MouseDown(int x, int y, Events::MouseButton button) override;
+	GUI_status MouseUp(int x, int y, Events::MouseButton button) override;
+	GUI_status MouseMotion(int x, int y, uint8 state) override;
+	void MoveRelative(int dx, int dy) override;
+
+protected:
+	void set_bg_color_key(uint8 r, uint8 g, uint8 b);
+	void force_full_redraw_if_needed();
+};
+
+} // End of namespace Nuvie
+} // End of namespace Ultima
+
+#endif