1 /* ScummVM - Graphic Adventure Engine 2 * 3 * ScummVM is the legal property of its developers, whose names 4 * are too numerous to list here. Please refer to the COPYRIGHT 5 * file distributed with this source distribution. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 2 10 * of the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 20 * 21 */ 22 23 #ifndef NUVIE_GUI_GUI_SCROLLER_H 24 #define NUVIE_GUI_GUI_SCROLLER_H 25 26 27 28 #include "ultima/nuvie/gui/widgets/gui_widget.h" 29 #include "ultima/nuvie/screen/screen.h" 30 31 namespace Ultima { 32 namespace Nuvie { 33 34 class GUI_ScrollBar; 35 36 class GUI_Scroller : public GUI_Widget { 37 38 uint8 R, G, B; 39 uint32 bg_color; 40 uint16 row_height; 41 uint16 rows_per_page; 42 uint16 num_rows; 43 GUI_ScrollBar *scroll_bar; 44 uint16 disp_offset; 45 46 public: 47 /* Passed the area, color and shape */ 48 GUI_Scroller(int x, int y, int w, int h, uint8 r, uint8 g, uint8 b, uint16 r_height); 49 50 /* Map the color to the display */ 51 void SetDisplay(Screen *s) override; 52 void PlaceOnScreen(Screen *s, GUI_DragManager *dm, int x, int y) override; 53 void move_up(); 54 void move_down(); 55 void page_up(bool all = false); 56 void page_down(bool all = false); 57 58 int AddWidget(GUI_Widget *widget); 59 60 /* Show the widget */ 61 void Display(bool full_redraw) override; 62 63 /* events, used for dragging the area. */ 64 GUI_status MouseDown(int x, int y, Shared::MouseButton button) override; 65 GUI_status MouseUp(int x, int y, Shared::MouseButton button) override; 66 GUI_status MouseMotion(int x, int y, uint8 state) override; 67 GUI_status MouseWheel(sint32 x, sint32 y) override; 68 69 protected: 70 void update_viewport(bool update_slider); 71 void move_percentage(float offset_percentage); 72 GUI_status callback(uint16 msg, GUI_CallBack *caller, void *data) override; 73 }; 74 75 } // End of namespace Nuvie 76 } // End of namespace Ultima 77 78 #endif 79