diff options
Diffstat (limited to 'components/rtgui/widgets/scrollbar.c')
| -rw-r--r-- | components/rtgui/widgets/scrollbar.c | 834 |
1 files changed, 419 insertions, 415 deletions
diff --git a/components/rtgui/widgets/scrollbar.c b/components/rtgui/widgets/scrollbar.c index 5581ba0560..58a3017b3c 100644 --- a/components/rtgui/widgets/scrollbar.c +++ b/components/rtgui/widgets/scrollbar.c @@ -1,415 +1,419 @@ -/*
- * File : scrollbar.c
- * This file is part of RT-Thread RTOS
- * COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team
- *
- * The license and distribution terms for this file may be
- * found in the file LICENSE in this distribution or at
- * http://www.rt-thread.org/license/LICENSE
- *
- * Change Logs:
- * Date Author Notes
- * 2010-08-09 Bernard first version
- */
-#include <rtgui/dc.h>
-#include <rtgui/rtgui_theme.h>
-#include <rtgui/widgets/scrollbar.h>
-
-static void _rtgui_scrollbar_constructor(rtgui_scrollbar_t *bar)
-{
- struct rtgui_rect rect = {0, 0, RTGUI_DEFAULT_SB_WIDTH, RTGUI_DEFAULT_SB_HEIGHT};
-
- /* set event handler */
- rtgui_widget_set_event_handler(RTGUI_WIDGET(bar), rtgui_scrollbar_event_handler);
-
- rtgui_scrollbar_set_range(bar, 0, 100);
- rtgui_scrollbar_set_page_step(bar, 20);
- rtgui_scrollbar_set_line_step(bar, 10);
-
- bar->status = 0;
- bar->thumb_position = 0;
- bar->thumb_size = 16;
- bar->on_scroll = RT_NULL;
-
- bar->orient = RTGUI_HORIZONTAL;
- rtgui_widget_set_rect(RTGUI_WIDGET(bar), &rect);
-
- /* set gc */
- RTGUI_WIDGET_TEXTALIGN(RTGUI_WIDGET(bar)) = RTGUI_ALIGN_CENTER_HORIZONTAL | RTGUI_ALIGN_CENTER_VERTICAL;
-}
-
-rt_inline rt_uint32_t _rtgui_scrollbar_get_length(rtgui_scrollbar_t *bar)
-{
- struct rtgui_rect rect;
-
- rtgui_widget_get_rect(RTGUI_WIDGET(bar), &rect);
-
- if (bar->orient & RTGUI_VERTICAL)
- return rect.y2 - 2 * (rect.x2 - rect.x1);
-
- return rect.x2 - 2 * (rect.y2 - rect.y1);
-}
-
-rt_inline rt_uint32_t _rtgui_scrollbar_get_thumb_position(rtgui_scrollbar_t* bar)
-{
- rt_uint32_t thumb_position;
-
- /* calculate thumb position */
- thumb_position = (rtgui_scrollbar_get_value(bar) - bar->min_position) * _rtgui_scrollbar_get_length(bar) /
- (bar->max_position - bar->min_position);
-
- return thumb_position;
-}
-
-void rtgui_scrollbar_get_thumb_rect(rtgui_scrollbar_t *bar, rtgui_rect_t *rect)
-{
- struct rtgui_rect scrollbar_rect;
-
- rtgui_widget_get_rect(RTGUI_WIDGET(bar), &scrollbar_rect);
- if (bar->orient & RTGUI_VERTICAL)
- {
- rt_uint32_t btn_width = scrollbar_rect.x2 - scrollbar_rect.x1;
-
- /* vertical scroll bar */
- rect->x1 = scrollbar_rect.x1;
- rect->x2 = scrollbar_rect.x2;
- rect->y1 = scrollbar_rect.y1 + btn_width + _rtgui_scrollbar_get_thumb_position(bar);
- rect->y2 = rect->y1 + btn_width;
- }
- else
- {
- rt_uint32_t btn_height = scrollbar_rect.y2 - scrollbar_rect.y1;
-
- /* horizontal scroll bar */
- rect->x1 = scrollbar_rect.x1 + btn_height + _rtgui_scrollbar_get_thumb_position(bar);
- rect->x2 = rect->x1 + btn_height;
-
- rect->y1 = scrollbar_rect.y1;
- rect->y2 = scrollbar_rect.y2;
- }
-}
-
-DEFINE_CLASS_TYPE(scrollbar, "scrollbar",
- RTGUI_WIDGET_TYPE,
- _rtgui_scrollbar_constructor,
- RT_NULL,
- sizeof(struct rtgui_scrollbar));
-
-static void _rtgui_scrollbar_on_mouseclick(struct rtgui_widget * widget, struct rtgui_event * event)
-{
- rtgui_rect_t btn_rect, bar_rect;
- rt_uint32_t thumb_size, thumb_position;
- struct rtgui_scrollbar* bar = (struct rtgui_scrollbar*)widget;
- struct rtgui_event_mouse* mouse = (struct rtgui_event_mouse*)event;
-
- /* get the thumb size and position */
- thumb_size = bar->thumb_size * (bar->max_position - bar->min_position) / _rtgui_scrollbar_get_length(bar);
- thumb_position = _rtgui_scrollbar_get_thumb_position(bar);
-
- if (bar->orient == RTGUI_VERTICAL)
- {
- /* get up arrow button rect */
- btn_rect.x1 = widget->extent.x1;
- btn_rect.x2 = widget->extent.x2;
- btn_rect.y1 = widget->extent.y1;
- btn_rect.y2 = widget->extent.y1 + (widget->extent.x2 - widget->extent.x1);
- if (rtgui_rect_contains_point(&btn_rect, mouse->x, mouse->y) == RT_EOK)
- {
- if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) ==
- (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN))
- {
- bar->status |= SBS_UPARROW;
-
- /* line step */
- bar->thumb_position -= bar->line_step;
- if (bar->thumb_position < bar->min_position) bar->thumb_position = bar->min_position;
- }
- else if (mouse->button & RTGUI_MOUSE_BUTTON_UP)
- {
- bar->status = 0;
- }
- goto __exit;
- }
-
- /* get bar rect */
- bar_rect.x1 = widget->extent.x1;
- bar_rect.x2 = widget->extent.x2;
- bar_rect.y1 = widget->extent.y1 + (widget->extent.x2 - widget->extent.x1);
- bar_rect.y2 = widget->extent.y2 - (widget->extent.x2 - widget->extent.x1);
- if (rtgui_rect_contains_point(&bar_rect, mouse->x, mouse->y) == RT_EOK)
- {
- if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) ==
- (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN))
- {
- /* page step */
- if (mouse->y < bar_rect.y1 + thumb_position)
- {
- bar->thumb_position -= bar->page_step;
- if (bar->thumb_position < bar->min_position)
- bar->thumb_position = bar->min_position;
- }
- else if (mouse->y > thumb_position + bar->thumb_size)
- {
- bar->thumb_position += bar->page_step;
- if (bar->thumb_position > bar->max_position - thumb_size)
- bar->thumb_position = bar->max_position - thumb_size;
- }
- }
- goto __exit;
- }
-
- /* get down arrow button rect */
- btn_rect.y1 = widget->extent.y2 - (widget->extent.x2 - widget->extent.x1);
- btn_rect.y2 = widget->extent.y2;
- bar_rect.y1 = widget->extent.y1 + ((widget->extent.y2 - widget->extent.y1)/2);
- bar_rect.y2 = widget->extent.y2 - (widget->extent.x2 - widget->extent.x1);
- if (rtgui_rect_contains_point(&btn_rect, mouse->x, mouse->y) == RT_EOK)
- {
- if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) ==
- (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN))
- {
- bar->status |= SBS_DOWNARROW;
-
- /* line step */
- bar->thumb_position += bar->line_step;
- if (bar->thumb_position > bar->max_position - thumb_size)
- bar->thumb_position = bar->max_position - thumb_size;
- }
- else if (mouse->button & RTGUI_MOUSE_BUTTON_UP)
- bar->status = 0;
- }
- }
- else
- {
- /* get left arrow button rect */
- btn_rect.x1 = widget->extent.x1;
- btn_rect.x2 = widget->extent.x1 + (widget->extent.y2 - widget->extent.y1);
- btn_rect.y1 = widget->extent.y1;
- btn_rect.y2 = widget->extent.y2;
- if (rtgui_rect_contains_point(&btn_rect, mouse->x, mouse->y) == RT_EOK)
- {
- if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) ==
- (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN))
- {
- bar->status |= SBS_LEFTARROW;
-
- /* line step */
- bar->thumb_position -= bar->line_step;
- if (bar->thumb_position < bar->min_position) bar->thumb_position = bar->min_position;
- }
- else if (mouse->button & RTGUI_MOUSE_BUTTON_UP)
- bar->status = 0;
- goto __exit;
- }
-
- /* get bar rect */
- bar_rect.x1 = widget->extent.x1 + (widget->extent.y2 - widget->extent.y1);
- bar_rect.x2 = widget->extent.x2 - (widget->extent.y2 - widget->extent.y1);
- bar_rect.y1 = widget->extent.y1;
- bar_rect.y2 = widget->extent.y2;
- if (rtgui_rect_contains_point(&bar_rect, mouse->x, mouse->y) == RT_EOK)
- {
- if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) ==
- (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN))
- {
- /* page step */
- if (mouse->x < bar_rect.x1 + thumb_position)
- {
- bar->thumb_position -= bar->page_step;
- if (bar->thumb_position < bar->min_position)
- bar->thumb_position = bar->min_position;
- }
- else if (mouse->x > thumb_position + bar->thumb_size)
- {
- bar->thumb_position += bar->page_step;
- if (bar->thumb_position > bar->max_position - thumb_size)
- bar->thumb_position = bar->max_position - thumb_size;
- }
- }
- goto __exit;
- }
-
- /* get right arrow button rect */
- btn_rect.x1 = widget->extent.x2 - (widget->extent.y2 - widget->extent.y1);
- btn_rect.x2 = widget->extent.x2;
- bar_rect.x1 = widget->extent.x1 + ((widget->extent.x2 - widget->extent.x1)/2);
- bar_rect.x2 = widget->extent.x2 - (widget->extent.y2 - widget->extent.y1);
- if (rtgui_rect_contains_point(&btn_rect,
- mouse->x, mouse->y) == RT_EOK)
- {
- if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) ==
- (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN))
- {
- bar->status |= SBS_RIGHTARROW;
-
- /* line step */
- bar->thumb_position += bar->line_step;
- if (bar->thumb_position > bar->max_position - bar->line_step)
- bar->thumb_position = bar->max_position - bar->line_step;
- }
- else if (mouse->button & RTGUI_MOUSE_BUTTON_UP)
- bar->status = 0;
- }
- }
-
-__exit:
- rtgui_theme_draw_scrollbar(bar);
- if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) ==
- (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN))
- {
- if (bar->on_scroll != RT_NULL) bar->on_scroll(widget, RT_NULL);
- }
-}
-
-rt_bool_t rtgui_scrollbar_event_handler(struct rtgui_widget * widget,
- struct rtgui_event * event)
-{
- struct rtgui_scrollbar* bar = (struct rtgui_scrollbar*)widget;
-
- switch (event->type)
- {
- case RTGUI_EVENT_PAINT:
-#ifndef RTGUI_USING_SMALL_SIZE
- if (widget->on_draw != RT_NULL) widget->on_draw(widget, event);
- else
-#endif
- {
- rtgui_theme_draw_scrollbar(bar);
- }
-
- break;
-
- case RTGUI_EVENT_MOUSE_BUTTON:
- if (RTGUI_WIDGET_IS_ENABLE(widget) && !RTGUI_WIDGET_IS_HIDE(widget))
- {
-#ifndef RTGUI_USING_SMALL_SIZE
- if (widget->on_mouseclick != RT_NULL)
- {
- widget->on_mouseclick(widget, event);
- }
- else
-#endif
- {
- _rtgui_scrollbar_on_mouseclick(widget, event);
- }
- }
-
- break;
-
- default:
- break;
- }
-
- return RT_FALSE;
-}
-
-struct rtgui_scrollbar* rtgui_scrollbar_create(int orient, rtgui_rect_t* r)
-{
- struct rtgui_scrollbar* bar;
-
- bar = (struct rtgui_scrollbar*) rtgui_widget_create (RTGUI_SCROLLBAR_TYPE);
- if (bar != RT_NULL)
- {
- if (r != RT_NULL)
- {
- rtgui_widget_set_rect(RTGUI_WIDGET(bar), r);
- if (orient == RTGUI_VERTICAL)
- bar->thumb_size = (r->x2 - r->x1);
- else
- bar->thumb_size = (r->y2 - r->y1);
- }
-
- bar->orient = orient;
- }
-
- return bar;
-}
-
-void rtgui_scrollbar_destroy(struct rtgui_scrollbar* bar)
-{
- rtgui_widget_destroy(RTGUI_WIDGET(bar));
-}
-
-void rtgui_scrollbar_set_orientation(rtgui_scrollbar_t* bar, int orientation)
-{
- RT_ASSERT(bar != RT_NULL);
-
- bar->orient = orientation;
-#ifndef RTGUI_USING_SMALL_SIZE
- if (bar->orient == RTGUI_HORIZONTAL)
- {
- /* horizontal */
- rtgui_widget_set_miniwidth(RTGUI_WIDGET(bar), RTGUI_DEFAULT_SB_WIDTH);
- rtgui_widget_set_miniheight(RTGUI_WIDGET(bar), RTGUI_DEFAULT_SB_HEIGHT);
- }
- else
- {
- /* vertical */
- rtgui_widget_set_miniwidth(RTGUI_WIDGET(bar), RTGUI_DEFAULT_SB_HEIGHT);
- rtgui_widget_set_miniheight(RTGUI_WIDGET(bar), RTGUI_DEFAULT_SB_WIDTH);
- }
-#endif
-}
-
-void rtgui_scrollbar_set_range(struct rtgui_scrollbar* bar, int min, int max)
-{
- RT_ASSERT(bar != RT_NULL);
-
- if (min >= max )
- {
- RTGUI_WIDGET_DISABLE(RTGUI_WIDGET(bar));
- return;
- }
-
- bar->min_position = (rt_int16_t)min;
- bar->max_position = (rt_int16_t)max;
-}
-
-void rtgui_scrollbar_set_page_step(struct rtgui_scrollbar* bar, int step)
-{
- RT_ASSERT(bar != RT_NULL);
-
- bar->page_step = step;
-
- /* disable or enable scrollbar */
- if (bar->page_step > (bar->max_position - bar->min_position))
- {
- /* disable bar */
- RTGUI_WIDGET_DISABLE(RTGUI_WIDGET(bar));
- }
- else
- {
- /* enable bar */
- RTGUI_WIDGET_ENABLE(RTGUI_WIDGET(bar));
- }
-}
-
-void rtgui_scrollbar_set_line_step(struct rtgui_scrollbar* bar, int step)
-{
- RT_ASSERT(bar != RT_NULL);
-
- bar->line_step = step;
-}
-
-rt_int16_t rtgui_scrollbar_get_value(struct rtgui_scrollbar* bar)
-{
- RT_ASSERT(bar != RT_NULL);
-
- return bar->thumb_position;
-}
-
-void rtgui_scrollbar_set_value(struct rtgui_scrollbar* bar, rt_int16_t position)
-{
- RT_ASSERT(bar != RT_NULL);
-
- bar->thumb_position = position;
- rtgui_widget_update(RTGUI_WIDGET(bar));
-}
-
-void rtgui_scrollbar_set_onscroll(struct rtgui_scrollbar* bar,
- rtgui_event_handler_ptr handler)
-{
- if (bar == RT_NULL || handler == RT_NULL) return;
-
- bar->on_scroll = handler;
-}
+/* + * File : scrollbar.c + * This file is part of RT-Thread RTOS + * COPYRIGHT (C) 2006 - 2009, RT-Thread Development Team + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rt-thread.org/license/LICENSE + * + * Change Logs: + * Date Author Notes + * 2010-08-09 Bernard first version + */ +#include <rtgui/dc.h> +#include <rtgui/rtgui_theme.h> +#include <rtgui/widgets/scrollbar.h> + +static void _rtgui_scrollbar_constructor(rtgui_scrollbar_t *bar) +{ + struct rtgui_rect rect = {0, 0, RTGUI_DEFAULT_SB_WIDTH, RTGUI_DEFAULT_SB_HEIGHT}; + + /* set event handler */ + rtgui_object_set_event_handler(RTGUI_OBJECT(bar), rtgui_scrollbar_event_handler); + + rtgui_scrollbar_set_range(bar, 0, 100); + rtgui_scrollbar_set_page_step(bar, 20); + rtgui_scrollbar_set_line_step(bar, 10); + + bar->status = 0; + bar->thumb_position = 0; + bar->thumb_size = 16; + bar->on_scroll = RT_NULL; + + bar->orient = RTGUI_HORIZONTAL; + rtgui_widget_set_rect(RTGUI_WIDGET(bar), &rect); + + /* set gc */ + RTGUI_WIDGET_TEXTALIGN(RTGUI_WIDGET(bar)) = RTGUI_ALIGN_CENTER_HORIZONTAL | RTGUI_ALIGN_CENTER_VERTICAL; +} + +rt_inline rt_uint32_t _rtgui_scrollbar_get_length(rtgui_scrollbar_t *bar) +{ + struct rtgui_rect rect; + + rtgui_widget_get_rect(RTGUI_WIDGET(bar), &rect); + + if (bar->orient & RTGUI_VERTICAL) + return rect.y2 - 2 * (rect.x2 - rect.x1); + + return rect.x2 - 2 * (rect.y2 - rect.y1); +} + +rt_inline rt_uint32_t _rtgui_scrollbar_get_thumb_position(rtgui_scrollbar_t* bar) +{ + rt_uint32_t thumb_position; + + /* calculate thumb position */ + thumb_position = (rtgui_scrollbar_get_value(bar) - bar->min_position) * _rtgui_scrollbar_get_length(bar) / + (bar->max_position - bar->min_position); + + return thumb_position; +} + +void rtgui_scrollbar_get_thumb_rect(rtgui_scrollbar_t *bar, rtgui_rect_t *rect) +{ + struct rtgui_rect scrollbar_rect; + + rtgui_widget_get_rect(RTGUI_WIDGET(bar), &scrollbar_rect); + if (bar->orient & RTGUI_VERTICAL) + { + rt_uint32_t btn_width = scrollbar_rect.x2 - scrollbar_rect.x1; + + /* vertical scroll bar */ + rect->x1 = scrollbar_rect.x1; + rect->x2 = scrollbar_rect.x2; + rect->y1 = scrollbar_rect.y1 + btn_width + _rtgui_scrollbar_get_thumb_position(bar); + rect->y2 = rect->y1 + btn_width; + } + else + { + rt_uint32_t btn_height = scrollbar_rect.y2 - scrollbar_rect.y1; + + /* horizontal scroll bar */ + rect->x1 = scrollbar_rect.x1 + btn_height + _rtgui_scrollbar_get_thumb_position(bar); + rect->x2 = rect->x1 + btn_height; + + rect->y1 = scrollbar_rect.y1; + rect->y2 = scrollbar_rect.y2; + } +} + +DEFINE_CLASS_TYPE(scrollbar, "scrollbar", + RTGUI_WIDGET_TYPE, + _rtgui_scrollbar_constructor, + RT_NULL, + sizeof(struct rtgui_scrollbar)); + +static void _rtgui_scrollbar_on_mouseclick(struct rtgui_widget * widget, struct rtgui_event * event) +{ + rtgui_rect_t btn_rect, bar_rect; + rt_uint32_t thumb_size, thumb_position; + struct rtgui_scrollbar* bar = (struct rtgui_scrollbar*)widget; + struct rtgui_event_mouse* mouse = (struct rtgui_event_mouse*)event; + + /* get the thumb size and position */ + thumb_size = bar->thumb_size * (bar->max_position - bar->min_position) / _rtgui_scrollbar_get_length(bar); + thumb_position = _rtgui_scrollbar_get_thumb_position(bar); + + if (bar->orient == RTGUI_VERTICAL) + { + /* get up arrow button rect */ + btn_rect.x1 = widget->extent.x1; + btn_rect.x2 = widget->extent.x2; + btn_rect.y1 = widget->extent.y1; + btn_rect.y2 = widget->extent.y1 + (widget->extent.x2 - widget->extent.x1); + if (rtgui_rect_contains_point(&btn_rect, mouse->x, mouse->y) == RT_EOK) + { + if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) == + (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) + { + bar->status |= SBS_UPARROW; + + /* line step */ + bar->thumb_position -= bar->line_step; + if (bar->thumb_position < bar->min_position) bar->thumb_position = bar->min_position; + } + else if (mouse->button & RTGUI_MOUSE_BUTTON_UP) + { + bar->status = 0; + } + goto __exit; + } + + /* get bar rect */ + bar_rect.x1 = widget->extent.x1; + bar_rect.x2 = widget->extent.x2; + bar_rect.y1 = widget->extent.y1 + (widget->extent.x2 - widget->extent.x1); + bar_rect.y2 = widget->extent.y2 - (widget->extent.x2 - widget->extent.x1); + if (rtgui_rect_contains_point(&bar_rect, mouse->x, mouse->y) == RT_EOK) + { + if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) == + (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) + { + /* page step */ + if (mouse->y < bar_rect.y1 + thumb_position) + { + bar->thumb_position -= bar->page_step; + if (bar->thumb_position < bar->min_position) + bar->thumb_position = bar->min_position; + } + else if (mouse->y > thumb_position + bar->thumb_size) + { + bar->thumb_position += bar->page_step; + if (bar->thumb_position > bar->max_position - thumb_size) + bar->thumb_position = bar->max_position - thumb_size; + } + } + goto __exit; + } + + /* get down arrow button rect */ + btn_rect.y1 = widget->extent.y2 - (widget->extent.x2 - widget->extent.x1); + btn_rect.y2 = widget->extent.y2; + bar_rect.y1 = widget->extent.y1 + ((widget->extent.y2 - widget->extent.y1)/2); + bar_rect.y2 = widget->extent.y2 - (widget->extent.x2 - widget->extent.x1); + if (rtgui_rect_contains_point(&btn_rect, mouse->x, mouse->y) == RT_EOK) + { + if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) == + (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) + { + bar->status |= SBS_DOWNARROW; + + /* line step */ + bar->thumb_position += bar->line_step; + if (bar->thumb_position > bar->max_position - thumb_size) + bar->thumb_position = bar->max_position - thumb_size; + } + else if (mouse->button & RTGUI_MOUSE_BUTTON_UP) + bar->status = 0; + } + } + else + { + /* get left arrow button rect */ + btn_rect.x1 = widget->extent.x1; + btn_rect.x2 = widget->extent.x1 + (widget->extent.y2 - widget->extent.y1); + btn_rect.y1 = widget->extent.y1; + btn_rect.y2 = widget->extent.y2; + if (rtgui_rect_contains_point(&btn_rect, mouse->x, mouse->y) == RT_EOK) + { + if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) == + (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) + { + bar->status |= SBS_LEFTARROW; + + /* line step */ + bar->thumb_position -= bar->line_step; + if (bar->thumb_position < bar->min_position) bar->thumb_position = bar->min_position; + } + else if (mouse->button & RTGUI_MOUSE_BUTTON_UP) + bar->status = 0; + goto __exit; + } + + /* get bar rect */ + bar_rect.x1 = widget->extent.x1 + (widget->extent.y2 - widget->extent.y1); + bar_rect.x2 = widget->extent.x2 - (widget->extent.y2 - widget->extent.y1); + bar_rect.y1 = widget->extent.y1; + bar_rect.y2 = widget->extent.y2; + if (rtgui_rect_contains_point(&bar_rect, mouse->x, mouse->y) == RT_EOK) + { + if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) == + (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) + { + /* page step */ + if (mouse->x < bar_rect.x1 + thumb_position) + { + bar->thumb_position -= bar->page_step; + if (bar->thumb_position < bar->min_position) + bar->thumb_position = bar->min_position; + } + else if (mouse->x > thumb_position + bar->thumb_size) + { + bar->thumb_position += bar->page_step; + if (bar->thumb_position > bar->max_position - thumb_size) + bar->thumb_position = bar->max_position - thumb_size; + } + } + goto __exit; + } + + /* get right arrow button rect */ + btn_rect.x1 = widget->extent.x2 - (widget->extent.y2 - widget->extent.y1); + btn_rect.x2 = widget->extent.x2; + bar_rect.x1 = widget->extent.x1 + ((widget->extent.x2 - widget->extent.x1)/2); + bar_rect.x2 = widget->extent.x2 - (widget->extent.y2 - widget->extent.y1); + if (rtgui_rect_contains_point(&btn_rect, + mouse->x, mouse->y) == RT_EOK) + { + if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) == + (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) + { + bar->status |= SBS_RIGHTARROW; + + /* line step */ + bar->thumb_position += bar->line_step; + if (bar->thumb_position > bar->max_position - bar->line_step) + bar->thumb_position = bar->max_position - bar->line_step; + } + else if (mouse->button & RTGUI_MOUSE_BUTTON_UP) + bar->status = 0; + } + } + +__exit: + rtgui_theme_draw_scrollbar(bar); + if ((mouse->button & (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) == + (RTGUI_MOUSE_BUTTON_LEFT | RTGUI_MOUSE_BUTTON_DOWN)) + { + if (bar->on_scroll != RT_NULL) + bar->on_scroll(RTGUI_OBJECT(widget), RT_NULL); + } +} + +rt_bool_t rtgui_scrollbar_event_handler(struct rtgui_object *object, + struct rtgui_event *event) +{ + struct rtgui_scrollbar* bar; + RTGUI_WIDGET_EVENT_HANDLER_PREPARE + + bar = RTGUI_SCROLLBAR(object); + + switch (event->type) + { + case RTGUI_EVENT_PAINT: +#ifndef RTGUI_USING_SMALL_SIZE + if (widget->on_draw != RT_NULL) widget->on_draw(widget, event); + else +#endif + { + rtgui_theme_draw_scrollbar(bar); + } + + break; + + case RTGUI_EVENT_MOUSE_BUTTON: + if (RTGUI_WIDGET_IS_ENABLE(widget) && !RTGUI_WIDGET_IS_HIDE(widget)) + { +#ifndef RTGUI_USING_SMALL_SIZE + if (widget->on_mouseclick != RT_NULL) + { + widget->on_mouseclick(widget, event); + } + else +#endif + { + _rtgui_scrollbar_on_mouseclick(widget, event); + } + } + + break; + + default: + break; + } + + return RT_FALSE; +} + +struct rtgui_scrollbar* rtgui_scrollbar_create(int orient, rtgui_rect_t* r) +{ + struct rtgui_scrollbar* bar; + + bar = (struct rtgui_scrollbar*) rtgui_widget_create (RTGUI_SCROLLBAR_TYPE); + if (bar != RT_NULL) + { + if (r != RT_NULL) + { + rtgui_widget_set_rect(RTGUI_WIDGET(bar), r); + if (orient == RTGUI_VERTICAL) + bar->thumb_size = (r->x2 - r->x1); + else + bar->thumb_size = (r->y2 - r->y1); + } + + bar->orient = orient; + } + + return bar; +} + +void rtgui_scrollbar_destroy(struct rtgui_scrollbar* bar) +{ + rtgui_widget_destroy(RTGUI_WIDGET(bar)); +} + +void rtgui_scrollbar_set_orientation(rtgui_scrollbar_t* bar, int orientation) +{ + RT_ASSERT(bar != RT_NULL); + + bar->orient = orientation; +#ifndef RTGUI_USING_SMALL_SIZE + if (bar->orient == RTGUI_HORIZONTAL) + { + /* horizontal */ + rtgui_widget_set_miniwidth(RTGUI_WIDGET(bar), RTGUI_DEFAULT_SB_WIDTH); + rtgui_widget_set_miniheight(RTGUI_WIDGET(bar), RTGUI_DEFAULT_SB_HEIGHT); + } + else + { + /* vertical */ + rtgui_widget_set_miniwidth(RTGUI_WIDGET(bar), RTGUI_DEFAULT_SB_HEIGHT); + rtgui_widget_set_miniheight(RTGUI_WIDGET(bar), RTGUI_DEFAULT_SB_WIDTH); + } +#endif +} + +void rtgui_scrollbar_set_range(struct rtgui_scrollbar* bar, int min, int max) +{ + RT_ASSERT(bar != RT_NULL); + + if (min >= max ) + { + RTGUI_WIDGET_DISABLE(RTGUI_WIDGET(bar)); + return; + } + + bar->min_position = (rt_int16_t)min; + bar->max_position = (rt_int16_t)max; +} + +void rtgui_scrollbar_set_page_step(struct rtgui_scrollbar* bar, int step) +{ + RT_ASSERT(bar != RT_NULL); + + bar->page_step = step; + + /* disable or enable scrollbar */ + if (bar->page_step > (bar->max_position - bar->min_position)) + { + /* disable bar */ + RTGUI_WIDGET_DISABLE(RTGUI_WIDGET(bar)); + } + else + { + /* enable bar */ + RTGUI_WIDGET_ENABLE(RTGUI_WIDGET(bar)); + } +} + +void rtgui_scrollbar_set_line_step(struct rtgui_scrollbar* bar, int step) +{ + RT_ASSERT(bar != RT_NULL); + + bar->line_step = step; +} + +rt_int16_t rtgui_scrollbar_get_value(struct rtgui_scrollbar* bar) +{ + RT_ASSERT(bar != RT_NULL); + + return bar->thumb_position; +} + +void rtgui_scrollbar_set_value(struct rtgui_scrollbar* bar, rt_int16_t position) +{ + RT_ASSERT(bar != RT_NULL); + + bar->thumb_position = position; + rtgui_widget_update(RTGUI_WIDGET(bar)); +} + +void rtgui_scrollbar_set_onscroll(struct rtgui_scrollbar* bar, + rtgui_event_handler_ptr handler) +{ + if (bar == RT_NULL || handler == RT_NULL) return; + + bar->on_scroll = handler; +} |