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engines/ultima/nuvie/gui/gui_scroller.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_GUI_GUI_SCROLLER_H
+#define NUVIE_GUI_GUI_SCROLLER_H
+
+
+
+#include "ultima/nuvie/gui/widgets/gui_widget.h"
+#include "ultima/nuvie/screen/screen.h"
+
+namespace Ultima {
+namespace Nuvie {
+
+class GUI_ScrollBar;
+
+class GUI_Scroller : public GUI_Widget {
+
+	uint8 R, G, B;
+	uint32 bg_color;
+	uint16 row_height;
+	uint16 rows_per_page;
+	uint16 num_rows;
+	GUI_ScrollBar *scroll_bar;
+	uint16 disp_offset;
+
+public:
+	/* Passed the area, color and shape */
+	GUI_Scroller(int x, int y, int w, int h, uint8 r, uint8 g, uint8 b, uint16 r_height);
+
+	/* Map the color to the display */
+	void SetDisplay(Screen *s) override;
+	void PlaceOnScreen(Screen *s, GUI_DragManager *dm, int x, int y) override;
+	void move_up();
+	void move_down();
+	void page_up(bool all = false);
+	void page_down(bool all = false);
+
+	int AddWidget(GUI_Widget *widget);
+
+	/* Show the widget  */
+	void Display(bool full_redraw) 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;
+	GUI_status MouseWheel(sint32 x, sint32 y) override;
+
+protected:
+	void update_viewport(bool update_slider);
+	void move_percentage(float offset_percentage);
+	GUI_status callback(uint16 msg, GUI_CallBack *caller, void *data) override;
+};
+
+} // End of namespace Nuvie
+} // End of namespace Ultima
+
+#endif