mirror of
https://github.com/RT-Thread/rt-thread.git
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bernard.xiong@gmail.com
afe4c3cc61
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@834 bbd45198-f89e-11dd-88c7-29a3b14d5316
91 lines
2.9 KiB
C
91 lines
2.9 KiB
C
/*
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* File : scrollbar.h
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006 - 2010, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2010-08-09 Bernard first version
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*/
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#ifndef __RTGUI_SCROLLBAR_H__
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#define __RTGUI_SCROLLBAR_H__
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#include <rtgui/rtgui.h>
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#include <rtgui/widgets/widget.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** Gets the type of a scrollbar */
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#define RTGUI_SCROLLBAR_TYPE (rtgui_scrollbar_type_get())
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/** Casts the object to an rtgui_scrollbar */
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#define RTGUI_SCROLLBAR(obj) (RTGUI_OBJECT_CAST((obj), RTGUI_SCROLLBAR_TYPE, rtgui_scrollbar_t))
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/** Checks if the object is an rtgui_scrollbar */
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#define RTGUI_IS_SCROLLBAR(obj) (RTGUI_OBJECT_CHECK_TYPE((obj), RTGUI_SCROLLBAR_TYPE))
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#define RTGUI_DEFAULT_SB_WIDTH 100
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#define RTGUI_DEFAULT_SB_HEIGHT 16
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/* scrollbar status/positions*/
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#define SBS_UNKNOWN 0x0000
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#define SBS_LEFTARROW 0x0001
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#define SBS_RIGHTARROW 0x0002
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#define SBS_LEFTSPACE 0x0004
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#define SBS_RIGHTSPACE 0x0008
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#define SBS_HORZTHUMB 0x0010
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#define SBS_UPARROW 0x0020
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#define SBS_DOWNARROW 0x0040
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#define SBS_UPSPACE 0x0080
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#define SBS_DOWNSPACE 0x0100
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#define SBS_VERTTHUMB 0x0200
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struct rtgui_scrollbar
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{
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/* inherit from widget */
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struct rtgui_widget parent;
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rt_uint8_t orient;
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rt_uint8_t status;
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/* page_step = width of scrollbar */
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/* thumb size = line_step * page_step / (page_step - (button width * 2)) */
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rt_int16_t line_step, page_step;
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rt_int16_t thumb_position, thumb_size;
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/* position 1:1 width of scrollbar */
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rt_int16_t min_position, max_position;
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rt_bool_t (*on_scroll) (struct rtgui_widget* widget, struct rtgui_event* event);
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};
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typedef struct rtgui_scrollbar rtgui_scrollbar_t;
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rtgui_type_t *rtgui_scrollbar_type_get(void);
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struct rtgui_scrollbar* rtgui_scrollbar_create(int orient, rtgui_rect_t* r);
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void rtgui_scrollbar_destroy(struct rtgui_scrollbar* bar);
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void rtgui_scrollbar_get_thumb_rect(rtgui_scrollbar_t *bar, rtgui_rect_t *rect);
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void rtgui_scrollbar_set_range(struct rtgui_scrollbar* bar, int min, int max);
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rt_int16_t rtgui_scrollbar_get_value(struct rtgui_scrollbar* bar);
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void rtgui_scrollbar_set_value(struct rtgui_scrollbar* bar, rt_int16_t position);
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void rtgui_scrollbar_set_onscroll(struct rtgui_scrollbar* bar, rtgui_event_handler_ptr handler);
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void rtgui_scrollbar_set_orientation(struct rtgui_scrollbar* bar, int orientation);
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void rtgui_scrollbar_set_page_step(struct rtgui_scrollbar* bar, int step);
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void rtgui_scrollbar_set_line_step(struct rtgui_scrollbar* bar, int step);
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rt_bool_t rtgui_scrollbar_event_handler(struct rtgui_widget* widget, struct rtgui_event* event);
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#ifdef __cplusplus
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}
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#endif
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#endif
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