diff options
Diffstat (limited to 'components/rtgui/widgets/listctrl.c')
| -rw-r--r-- | components/rtgui/widgets/listctrl.c | 853 |
1 files changed, 427 insertions, 426 deletions
diff --git a/components/rtgui/widgets/listctrl.c b/components/rtgui/widgets/listctrl.c index 23e5c8696a..6fdc4028d6 100644 --- a/components/rtgui/widgets/listctrl.c +++ b/components/rtgui/widgets/listctrl.c @@ -1,426 +1,427 @@ -/*
- * File : listctrl.c
- * This file is part of RTGUI in RT-Thread RTOS
- * COPYRIGHT (C) 2010, 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
- * 2010-01-06 Bernard first version
- */
-
-#include <rtgui/rtgui_theme.h>
-#include <rtgui/widgets/listctrl.h>
-
-static void rtgui_listctrl_update_current(struct rtgui_listctrl* ctrl, rt_uint16_t old_item);
-
-static void _rtgui_listctrl_constructor(struct rtgui_listctrl *ctrl)
-{
- /* set default widget rect and set event handler */
- rtgui_widget_set_event_handler(RTGUI_WIDGET(ctrl),rtgui_listctrl_event_handler);
-
- RTGUI_WIDGET(ctrl)->flag |= RTGUI_WIDGET_FLAG_FOCUSABLE;
-
- ctrl->current_item = -1;
- ctrl->items_count = 0;
- ctrl->page_items = 0;
- ctrl->on_item = 0;
- ctrl->on_item_draw = RT_NULL;
-
- RTGUI_WIDGET_BACKGROUND(RTGUI_WIDGET(ctrl)) = white;
- RTGUI_WIDGET_TEXTALIGN(RTGUI_WIDGET(ctrl)) = RTGUI_ALIGN_CENTER_VERTICAL;
-}
-
-DEFINE_CLASS_TYPE(listctrl, "listctrl",
- RTGUI_WIDGET_TYPE,
- _rtgui_listctrl_constructor,
- RT_NULL,
- sizeof(struct rtgui_listctrl));
-
-static void _rtgui_listctrl_get_rect(struct rtgui_listctrl* ctrl, rtgui_rect_t* rect)
-{
- rtgui_widget_get_rect(RTGUI_WIDGET(ctrl), rect);
- if (ctrl->items_count > rtgui_rect_height(*rect)/rtgui_theme_get_selected_height())
- {
- rect->x2 = rect->x2 - 8;
- }
-}
-
-static void _rtgui_listctrl_get_scrollbar_rect(struct rtgui_listctrl* ctrl, rtgui_rect_t* rect)
-{
- rtgui_widget_get_rect(RTGUI_WIDGET(ctrl), rect);
- if (ctrl->items_count > rtgui_rect_height(*rect)/rtgui_theme_get_selected_height())
- {
- rect->x1 = rect->x2 - 8;
- }
- else
- {
- /* no scrollbar */
- rt_memset(rect, 0, sizeof(rtgui_rect_t));
- }
-}
-
-static void _rtgui_listctrl_scrollbar_ondraw(struct rtgui_listctrl* ctrl, struct rtgui_dc* dc)
-{
- rtgui_rect_t rect;
- rt_uint32_t height, y1;
-
- /* get scrollbar rect */
- _rtgui_listctrl_get_scrollbar_rect(ctrl, &rect);
- rtgui_dc_fill_rect(dc, &rect);
-
- height = rtgui_rect_height(rect);
-
- height = height / ((ctrl->items_count + (ctrl->page_items - 1))/ctrl->page_items);
- y1 = (ctrl->current_item / ctrl->page_items) * height;
-
- rect.y1 = rect.y1 + y1; rect.y2 = rect.y1 + height;
- rect.x1 -= 3;
- rtgui_theme_draw_selected(dc, &rect);
-}
-
-static void _rtgui_listctrl_scrollbar_onmouse(struct rtgui_listctrl* ctrl, struct rtgui_event_mouse* mouse)
-{
- rtgui_rect_t rect;
- rt_uint32_t height, y1;
- rt_uint16_t old_item;
-
- /* get scrollbar rect */
- _rtgui_listctrl_get_scrollbar_rect(ctrl, &rect);
- height = rtgui_rect_height(rect);
- height = height / ((ctrl->items_count + (ctrl->page_items - 1))/ctrl->page_items);
- y1 = (ctrl->current_item / ctrl->page_items) * height;
-
- rect.y1 = rect.y1 + y1; rect.y2 = rect.y1 + height;
- rtgui_widget_rect_to_device(RTGUI_WIDGET(ctrl), &rect);
-
- old_item = ctrl->current_item;
- if (mouse->y < rect.y1)
- {
- if (ctrl->current_item - ctrl->page_items >= 0)
- ctrl->current_item -= ctrl->page_items;
- rtgui_listctrl_update_current(ctrl, old_item);
- }
- else if (mouse->y > rect.y2)
- {
- if (ctrl->current_item + ctrl->page_items < ctrl->items_count - 1)
- ctrl->current_item += ctrl->page_items;
- else
- ctrl->current_item = ((ctrl->current_item / ctrl->page_items) + 1) * ctrl->page_items;
- rtgui_listctrl_update_current(ctrl, old_item);
- }
-}
-
-static void _rtgui_listctrl_ondraw(struct rtgui_listctrl* ctrl)
-{
- struct rtgui_rect rect, item_rect;
- struct rtgui_dc* dc;
- rt_uint16_t page_index, index;
-
- dc = rtgui_dc_begin_drawing(RTGUI_WIDGET(ctrl));
- if (dc == RT_NULL) return;
-
- _rtgui_listctrl_get_rect(ctrl, &rect);
- rtgui_dc_fill_rect(dc, &rect);
-
- rect.x2 -= 1; rect.y2 -= 1;
-
- /* get item base rect */
- item_rect = rect;
- item_rect.x1 += 1; item_rect.x2 -= 1;
- item_rect.y1 += 2;
- item_rect.y2 = item_rect.y1 + (2 + rtgui_theme_get_selected_height());
-
- /* get current page */
- page_index = (ctrl->current_item / ctrl->page_items) * ctrl->page_items;
- for (index = 0; index < ctrl->page_items; index ++)
- {
- if (page_index + index >= ctrl->items_count) break;
-
- if (page_index + index == ctrl->current_item)
- {
- rtgui_theme_draw_selected(dc, &item_rect);
- }
-
- if (ctrl->on_item_draw != RT_NULL)
- {
- ctrl->on_item_draw(ctrl, dc, &item_rect, page_index + index);
- }
-
- /* move to next item position */
- item_rect.y1 += (rtgui_theme_get_selected_height() + 2);
- item_rect.y2 += (rtgui_theme_get_selected_height() + 2);
- }
-
- /* draw scrollbar */
- _rtgui_listctrl_scrollbar_ondraw(ctrl, dc);
- rtgui_dc_end_drawing(dc);
-}
-
-void rtgui_listctrl_update_current(struct rtgui_listctrl* ctrl, rt_uint16_t old_item)
-{
- struct rtgui_dc* dc;
- rtgui_rect_t rect, item_rect;
-
- if (old_item/ctrl->page_items != ctrl->current_item/ctrl->page_items)
- {
- /* it's not a same page, update all */
- rtgui_widget_update(RTGUI_WIDGET(ctrl));
- return;
- }
-
- dc = rtgui_dc_begin_drawing(RTGUI_WIDGET(ctrl));
- if (dc == RT_NULL) return;
-
- _rtgui_listctrl_get_rect(ctrl, &rect);
- rect.x2 -= 1; rect.y2 -= 1;
-
- item_rect = rect;
- /* get old item's rect */
- item_rect.x1 += 1; item_rect.x2 -= 1;
- item_rect.y1 += 2;
- item_rect.y1 += (old_item % ctrl->page_items) * (2 + rtgui_theme_get_selected_height());
- item_rect.y2 = item_rect.y1 + (2 + rtgui_theme_get_selected_height());
-
- /* draw old item */
- rtgui_dc_fill_rect(dc, &item_rect);
- if (ctrl->on_item_draw != RT_NULL)
- ctrl->on_item_draw(ctrl, dc, &item_rect, old_item);
-
- /* draw current item */
- item_rect = rect;
- /* get current item's rect */
- item_rect.x1 += 1; item_rect.x2 -= 1;
- item_rect.y1 += 2;
- item_rect.y1 += (ctrl->current_item % ctrl->page_items) * (2 + rtgui_theme_get_selected_height());
- item_rect.y2 = item_rect.y1 + (2 + rtgui_theme_get_selected_height());
-
- /* draw current item */
- rtgui_theme_draw_selected(dc, &item_rect);
- if (ctrl->on_item_draw != RT_NULL)
- ctrl->on_item_draw(ctrl, dc, &item_rect, ctrl->current_item);
-
- rtgui_dc_end_drawing(dc);
-}
-
-rt_bool_t rtgui_listctrl_event_handler(struct rtgui_widget* widget, struct rtgui_event* event)
-{
- struct rtgui_listctrl* ctrl = RT_NULL;
-
- ctrl = RTGUI_LISTCTRL(widget);
- switch (event->type)
- {
- case RTGUI_EVENT_PAINT:
- _rtgui_listctrl_ondraw(ctrl);
- return RT_FALSE;
-
- case RTGUI_EVENT_RESIZE:
- {
- struct rtgui_event_resize* resize;
-
- resize = (struct rtgui_event_resize*)event;
-
- /* recalculate page items */
- ctrl->page_items = resize->h / (2 + rtgui_theme_get_selected_height());
- }
- break;
-
- case RTGUI_EVENT_MOUSE_BUTTON:
- {
- rtgui_rect_t rect;
- struct rtgui_event_mouse* emouse;
-
- emouse = (struct rtgui_event_mouse*)event;
-
- /* get scrollbar rect */
- _rtgui_listctrl_get_scrollbar_rect(ctrl, &rect);
- rtgui_widget_rect_to_device(RTGUI_WIDGET(ctrl), &rect);
- if (rtgui_rect_contains_point(&rect, emouse->x, emouse->y) == RT_EOK)
- {
- _rtgui_listctrl_scrollbar_onmouse(ctrl, emouse);
- return RT_TRUE;
- }
-
- /* calculate selected item */
-
- /* get physical extent information */
- _rtgui_listctrl_get_rect(ctrl, &rect);
- rtgui_widget_rect_to_device(widget, &rect);
-
- if ((rtgui_rect_contains_point(&rect, emouse->x, emouse->y) == RT_EOK) &&
- (ctrl->items_count > 0))
- {
- rt_uint16_t index;
- index = (emouse->y - rect.y1) / (2 + rtgui_theme_get_selected_height());
-
- /* set focus */
- rtgui_widget_focus(widget);
- {
- struct rtgui_rect rect;
- struct rtgui_dc* dc;
-
- dc = rtgui_dc_begin_drawing(RTGUI_WIDGET(ctrl));
- if (dc != RT_NULL)
- {
- /* get widget rect */
- rtgui_widget_get_rect(RTGUI_WIDGET(ctrl), &rect);
- /* update focus border */
- rect.x2 -= 1; rect.y2 -= 1;
- rtgui_dc_end_drawing(dc);
- }
- }
-
- if ((index < ctrl->page_items) &&
- (ctrl->current_item/ctrl->page_items)* ctrl->page_items + index < ctrl->items_count)
- {
- rt_uint16_t old_item;
-
- old_item = ctrl->current_item;
-
- /* set selected item */
- ctrl->current_item = (ctrl->current_item/ctrl->page_items) * ctrl->page_items + index;
- if (emouse->button & RTGUI_MOUSE_BUTTON_DOWN)
- {
- /* down event */
- rtgui_listctrl_update_current(ctrl, old_item);
- }
- else
- {
- /* up event */
- if (ctrl->on_item != RT_NULL)
- {
- ctrl->on_item(RTGUI_WIDGET(ctrl), RT_NULL);
- }
- }
- }
- }
-
- return RT_TRUE;
- }
-
- case RTGUI_EVENT_KBD:
- {
- struct rtgui_event_kbd* ekbd = (struct rtgui_event_kbd*)event;
- if ((ekbd->type == RTGUI_KEYDOWN) && (ctrl->items_count > 0))
- {
- rt_uint16_t old_item;
-
- old_item = ctrl->current_item;
- switch (ekbd->key)
- {
- case RTGUIK_LEFT:
- if (ctrl->current_item - ctrl->page_items >= 0)
- ctrl->current_item -= ctrl->page_items;
- rtgui_listctrl_update_current(ctrl, old_item);
- return RT_FALSE;
-
- case RTGUIK_UP:
- if (ctrl->current_item > 0)
- ctrl->current_item --;
- rtgui_listctrl_update_current(ctrl, old_item);
- return RT_FALSE;
-
- case RTGUIK_RIGHT:
- if (ctrl->current_item + ctrl->page_items < ctrl->items_count - 1)
- ctrl->current_item += ctrl->page_items;
- else
- {
- if ((((ctrl->current_item/ctrl->page_items) + 1) * ctrl->page_items) < ctrl->items_count - 1)
- ctrl->current_item = ((ctrl->current_item / ctrl->page_items) + 1) * ctrl->page_items;
- }
- rtgui_listctrl_update_current(ctrl, old_item);
- return RT_FALSE;
-
- case RTGUIK_DOWN:
- if (ctrl->current_item < ctrl->items_count - 1)
- ctrl->current_item ++;
- rtgui_listctrl_update_current(ctrl, old_item);
- return RT_FALSE;
-
- case RTGUIK_RETURN:
- if (ctrl->on_item != RT_NULL)
- {
- ctrl->on_item(RTGUI_WIDGET(ctrl), RT_NULL);
- }
- return RT_FALSE;
-
- default:
- break;
- }
- }
- }
- return RT_FALSE;
- }
-
- /* use ctrl event handler */
- return rtgui_widget_event_handler(widget, event);
-}
-
-rtgui_listctrl_t* rtgui_listctrl_create(rt_uint32_t items, rt_uint16_t count, rtgui_rect_t *rect,
- rtgui_onitem_draw_t ondraw)
-{
- struct rtgui_listctrl* ctrl = RT_NULL;
-
- ctrl = (struct rtgui_listctrl*) rtgui_widget_create(RTGUI_LISTCTRL_TYPE);
- if (ctrl != RT_NULL)
- {
- ctrl->items = items;
- ctrl->items_count = count;
- ctrl->on_item_draw = ondraw;
-
- ctrl->page_items = rtgui_rect_height(*rect) / (2 + rtgui_theme_get_selected_height());
- rtgui_widget_set_rect(RTGUI_WIDGET(ctrl), rect);
- }
-
- return ctrl;
-}
-
-void rtgui_listctrl_destroy(rtgui_listctrl_t* ctrl)
-{
- /* destroy ctrl */
- rtgui_widget_destroy(RTGUI_WIDGET(ctrl));
-}
-
-void rtgui_listctrl_set_onitem(rtgui_listctrl_t* ctrl, rtgui_onitem_func_t func)
-{
- RT_ASSERT(ctrl != RT_NULL);
-
- ctrl->on_item = func;
-}
-
-void rtgui_listctrl_set_items(rtgui_listctrl_t* ctrl, rt_uint32_t items, rt_uint16_t count)
-{
- rtgui_rect_t rect;
-
- ctrl->items = items;
- ctrl->items_count = count;
- ctrl->current_item = 0;
-
- rtgui_widget_get_rect(RTGUI_WIDGET(ctrl), &rect);
- ctrl->page_items = rtgui_rect_height(rect) / (2 + rtgui_theme_get_selected_height());
-
- rtgui_widget_update(RTGUI_WIDGET(ctrl));
-}
-
-rt_bool_t rtgui_listctrl_get_item_rect(rtgui_listctrl_t* ctrl, rt_uint16_t item, rtgui_rect_t* item_rect)
-{
- if (item < ctrl->items_count)
- {
- rt_uint16_t index;
-
- /* check whether this item in current page */
- index = (ctrl->current_item / ctrl->page_items) * ctrl->page_items;
- if (index > item || index + ctrl->page_items <= item) return RT_FALSE;
-
- rtgui_widget_get_extent(RTGUI_WIDGET(ctrl), item_rect);
- item_rect->y1 -= 2;
- item_rect->y1 += (item % ctrl->page_items) * (2 + rtgui_theme_get_selected_height());
- item_rect->y2 = item_rect->y1 + (2 + rtgui_theme_get_selected_height());
- return RT_TRUE;
- }
-
- return RT_FALSE;
-}
+/* + * File : listctrl.c + * This file is part of RTGUI in RT-Thread RTOS + * COPYRIGHT (C) 2010, 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 + * 2010-01-06 Bernard first version + */ + +#include <rtgui/rtgui_theme.h> +#include <rtgui/widgets/listctrl.h> + +static void rtgui_listctrl_update_current(struct rtgui_listctrl* ctrl, rt_uint16_t old_item); + +static void _rtgui_listctrl_constructor(struct rtgui_listctrl *ctrl) +{ + /* set default widget rect and set event handler */ + rtgui_object_set_event_handler(RTGUI_OBJECT(ctrl), rtgui_listctrl_event_handler); + + RTGUI_WIDGET(ctrl)->flag |= RTGUI_WIDGET_FLAG_FOCUSABLE; + + ctrl->current_item = -1; + ctrl->items_count = 0; + ctrl->page_items = 0; + ctrl->on_item = 0; + ctrl->on_item_draw = RT_NULL; + + RTGUI_WIDGET_BACKGROUND(RTGUI_WIDGET(ctrl)) = white; + RTGUI_WIDGET_TEXTALIGN(RTGUI_WIDGET(ctrl)) = RTGUI_ALIGN_CENTER_VERTICAL; +} + +DEFINE_CLASS_TYPE(listctrl, "listctrl", + RTGUI_WIDGET_TYPE, + _rtgui_listctrl_constructor, + RT_NULL, + sizeof(struct rtgui_listctrl)); + +static void _rtgui_listctrl_get_rect(struct rtgui_listctrl* ctrl, rtgui_rect_t* rect) +{ + rtgui_widget_get_rect(RTGUI_WIDGET(ctrl), rect); + if (ctrl->items_count > rtgui_rect_height(*rect)/rtgui_theme_get_selected_height()) + { + rect->x2 = rect->x2 - 8; + } +} + +static void _rtgui_listctrl_get_scrollbar_rect(struct rtgui_listctrl* ctrl, rtgui_rect_t* rect) +{ + rtgui_widget_get_rect(RTGUI_WIDGET(ctrl), rect); + if (ctrl->items_count > rtgui_rect_height(*rect)/rtgui_theme_get_selected_height()) + { + rect->x1 = rect->x2 - 8; + } + else + { + /* no scrollbar */ + rt_memset(rect, 0, sizeof(rtgui_rect_t)); + } +} + +static void _rtgui_listctrl_scrollbar_ondraw(struct rtgui_listctrl* ctrl, struct rtgui_dc* dc) +{ + rtgui_rect_t rect; + rt_uint32_t height, y1; + + /* get scrollbar rect */ + _rtgui_listctrl_get_scrollbar_rect(ctrl, &rect); + rtgui_dc_fill_rect(dc, &rect); + + height = rtgui_rect_height(rect); + + height = height / ((ctrl->items_count + (ctrl->page_items - 1))/ctrl->page_items); + y1 = (ctrl->current_item / ctrl->page_items) * height; + + rect.y1 = rect.y1 + y1; rect.y2 = rect.y1 + height; + rect.x1 -= 3; + rtgui_theme_draw_selected(dc, &rect); +} + +static void _rtgui_listctrl_scrollbar_onmouse(struct rtgui_listctrl* ctrl, struct rtgui_event_mouse* mouse) +{ + rtgui_rect_t rect; + rt_uint32_t height, y1; + rt_uint16_t old_item; + + /* get scrollbar rect */ + _rtgui_listctrl_get_scrollbar_rect(ctrl, &rect); + height = rtgui_rect_height(rect); + height = height / ((ctrl->items_count + (ctrl->page_items - 1))/ctrl->page_items); + y1 = (ctrl->current_item / ctrl->page_items) * height; + + rect.y1 = rect.y1 + y1; rect.y2 = rect.y1 + height; + rtgui_widget_rect_to_device(RTGUI_WIDGET(ctrl), &rect); + + old_item = ctrl->current_item; + if (mouse->y < rect.y1) + { + if (ctrl->current_item - ctrl->page_items >= 0) + ctrl->current_item -= ctrl->page_items; + rtgui_listctrl_update_current(ctrl, old_item); + } + else if (mouse->y > rect.y2) + { + if (ctrl->current_item + ctrl->page_items < ctrl->items_count - 1) + ctrl->current_item += ctrl->page_items; + else + ctrl->current_item = ((ctrl->current_item / ctrl->page_items) + 1) * ctrl->page_items; + rtgui_listctrl_update_current(ctrl, old_item); + } +} + +static void _rtgui_listctrl_ondraw(struct rtgui_listctrl* ctrl) +{ + struct rtgui_rect rect, item_rect; + struct rtgui_dc* dc; + rt_uint16_t page_index, index; + + dc = rtgui_dc_begin_drawing(RTGUI_WIDGET(ctrl)); + if (dc == RT_NULL) return; + + _rtgui_listctrl_get_rect(ctrl, &rect); + rtgui_dc_fill_rect(dc, &rect); + + rect.x2 -= 1; rect.y2 -= 1; + + /* get item base rect */ + item_rect = rect; + item_rect.x1 += 1; item_rect.x2 -= 1; + item_rect.y1 += 2; + item_rect.y2 = item_rect.y1 + (2 + rtgui_theme_get_selected_height()); + + /* get current page */ + page_index = (ctrl->current_item / ctrl->page_items) * ctrl->page_items; + for (index = 0; index < ctrl->page_items; index ++) + { + if (page_index + index >= ctrl->items_count) break; + + if (page_index + index == ctrl->current_item) + { + rtgui_theme_draw_selected(dc, &item_rect); + } + + if (ctrl->on_item_draw != RT_NULL) + { + ctrl->on_item_draw(ctrl, dc, &item_rect, page_index + index); + } + + /* move to next item position */ + item_rect.y1 += (rtgui_theme_get_selected_height() + 2); + item_rect.y2 += (rtgui_theme_get_selected_height() + 2); + } + + /* draw scrollbar */ + _rtgui_listctrl_scrollbar_ondraw(ctrl, dc); + rtgui_dc_end_drawing(dc); +} + +void rtgui_listctrl_update_current(struct rtgui_listctrl* ctrl, rt_uint16_t old_item) +{ + struct rtgui_dc* dc; + rtgui_rect_t rect, item_rect; + + if (old_item/ctrl->page_items != ctrl->current_item/ctrl->page_items) + { + /* it's not a same page, update all */ + rtgui_widget_update(RTGUI_WIDGET(ctrl)); + return; + } + + dc = rtgui_dc_begin_drawing(RTGUI_WIDGET(ctrl)); + if (dc == RT_NULL) return; + + _rtgui_listctrl_get_rect(ctrl, &rect); + rect.x2 -= 1; rect.y2 -= 1; + + item_rect = rect; + /* get old item's rect */ + item_rect.x1 += 1; item_rect.x2 -= 1; + item_rect.y1 += 2; + item_rect.y1 += (old_item % ctrl->page_items) * (2 + rtgui_theme_get_selected_height()); + item_rect.y2 = item_rect.y1 + (2 + rtgui_theme_get_selected_height()); + + /* draw old item */ + rtgui_dc_fill_rect(dc, &item_rect); + if (ctrl->on_item_draw != RT_NULL) + ctrl->on_item_draw(ctrl, dc, &item_rect, old_item); + + /* draw current item */ + item_rect = rect; + /* get current item's rect */ + item_rect.x1 += 1; item_rect.x2 -= 1; + item_rect.y1 += 2; + item_rect.y1 += (ctrl->current_item % ctrl->page_items) * (2 + rtgui_theme_get_selected_height()); + item_rect.y2 = item_rect.y1 + (2 + rtgui_theme_get_selected_height()); + + /* draw current item */ + rtgui_theme_draw_selected(dc, &item_rect); + if (ctrl->on_item_draw != RT_NULL) + ctrl->on_item_draw(ctrl, dc, &item_rect, ctrl->current_item); + + rtgui_dc_end_drawing(dc); +} + +rt_bool_t rtgui_listctrl_event_handler(struct rtgui_object* object, struct rtgui_event* event) +{ + struct rtgui_listctrl* ctrl; + RTGUI_WIDGET_EVENT_HANDLER_PREPARE + + ctrl = RTGUI_LISTCTRL(object); + switch (event->type) + { + case RTGUI_EVENT_PAINT: + _rtgui_listctrl_ondraw(ctrl); + return RT_FALSE; + + case RTGUI_EVENT_RESIZE: + { + struct rtgui_event_resize* resize; + + resize = (struct rtgui_event_resize*)event; + + /* recalculate page items */ + ctrl->page_items = resize->h / (2 + rtgui_theme_get_selected_height()); + } + break; + + case RTGUI_EVENT_MOUSE_BUTTON: + { + rtgui_rect_t rect; + struct rtgui_event_mouse* emouse; + + emouse = (struct rtgui_event_mouse*)event; + + /* get scrollbar rect */ + _rtgui_listctrl_get_scrollbar_rect(ctrl, &rect); + rtgui_widget_rect_to_device(RTGUI_WIDGET(ctrl), &rect); + if (rtgui_rect_contains_point(&rect, emouse->x, emouse->y) == RT_EOK) + { + _rtgui_listctrl_scrollbar_onmouse(ctrl, emouse); + return RT_TRUE; + } + + /* calculate selected item */ + + /* get physical extent information */ + _rtgui_listctrl_get_rect(ctrl, &rect); + rtgui_widget_rect_to_device(widget, &rect); + + if ((rtgui_rect_contains_point(&rect, emouse->x, emouse->y) == RT_EOK) && + (ctrl->items_count > 0)) + { + rt_uint16_t index; + index = (emouse->y - rect.y1) / (2 + rtgui_theme_get_selected_height()); + + /* set focus */ + rtgui_widget_focus(widget); + { + struct rtgui_rect rect; + struct rtgui_dc* dc; + + dc = rtgui_dc_begin_drawing(RTGUI_WIDGET(ctrl)); + if (dc != RT_NULL) + { + /* get widget rect */ + rtgui_widget_get_rect(RTGUI_WIDGET(ctrl), &rect); + /* update focus border */ + rect.x2 -= 1; rect.y2 -= 1; + rtgui_dc_end_drawing(dc); + } + } + + if ((index < ctrl->page_items) && + (ctrl->current_item/ctrl->page_items)* ctrl->page_items + index < ctrl->items_count) + { + rt_uint16_t old_item; + + old_item = ctrl->current_item; + + /* set selected item */ + ctrl->current_item = (ctrl->current_item/ctrl->page_items) * ctrl->page_items + index; + if (emouse->button & RTGUI_MOUSE_BUTTON_DOWN) + { + /* down event */ + rtgui_listctrl_update_current(ctrl, old_item); + } + else + { + /* up event */ + if (ctrl->on_item != RT_NULL) + { + ctrl->on_item(RTGUI_OBJECT(ctrl), RT_NULL); + } + } + } + } + + return RT_TRUE; + } + + case RTGUI_EVENT_KBD: + { + struct rtgui_event_kbd* ekbd = (struct rtgui_event_kbd*)event; + if ((ekbd->type == RTGUI_KEYDOWN) && (ctrl->items_count > 0)) + { + rt_uint16_t old_item; + + old_item = ctrl->current_item; + switch (ekbd->key) + { + case RTGUIK_LEFT: + if (ctrl->current_item - ctrl->page_items >= 0) + ctrl->current_item -= ctrl->page_items; + rtgui_listctrl_update_current(ctrl, old_item); + return RT_FALSE; + + case RTGUIK_UP: + if (ctrl->current_item > 0) + ctrl->current_item --; + rtgui_listctrl_update_current(ctrl, old_item); + return RT_FALSE; + + case RTGUIK_RIGHT: + if (ctrl->current_item + ctrl->page_items < ctrl->items_count - 1) + ctrl->current_item += ctrl->page_items; + else + { + if ((((ctrl->current_item/ctrl->page_items) + 1) * ctrl->page_items) < ctrl->items_count - 1) + ctrl->current_item = ((ctrl->current_item / ctrl->page_items) + 1) * ctrl->page_items; + } + rtgui_listctrl_update_current(ctrl, old_item); + return RT_FALSE; + + case RTGUIK_DOWN: + if (ctrl->current_item < ctrl->items_count - 1) + ctrl->current_item ++; + rtgui_listctrl_update_current(ctrl, old_item); + return RT_FALSE; + + case RTGUIK_RETURN: + if (ctrl->on_item != RT_NULL) + { + ctrl->on_item(RTGUI_OBJECT(ctrl), RT_NULL); + } + return RT_FALSE; + + default: + break; + } + } + } + return RT_FALSE; + } + + /* use ctrl event handler */ + return rtgui_widget_event_handler(RTGUI_OBJECT(widget), event); +} + +rtgui_listctrl_t* rtgui_listctrl_create(rt_uint32_t items, rt_uint16_t count, rtgui_rect_t *rect, + rtgui_onitem_draw_t ondraw) +{ + struct rtgui_listctrl* ctrl = RT_NULL; + + ctrl = (struct rtgui_listctrl*) rtgui_widget_create(RTGUI_LISTCTRL_TYPE); + if (ctrl != RT_NULL) + { + ctrl->items = items; + ctrl->items_count = count; + ctrl->on_item_draw = ondraw; + + ctrl->page_items = rtgui_rect_height(*rect) / (2 + rtgui_theme_get_selected_height()); + rtgui_widget_set_rect(RTGUI_WIDGET(ctrl), rect); + } + + return ctrl; +} + +void rtgui_listctrl_destroy(rtgui_listctrl_t* ctrl) +{ + /* destroy ctrl */ + rtgui_widget_destroy(RTGUI_WIDGET(ctrl)); +} + +void rtgui_listctrl_set_onitem(rtgui_listctrl_t* ctrl, rtgui_event_handler_ptr func) +{ + RT_ASSERT(ctrl != RT_NULL); + + ctrl->on_item = func; +} + +void rtgui_listctrl_set_items(rtgui_listctrl_t* ctrl, rt_uint32_t items, rt_uint16_t count) +{ + rtgui_rect_t rect; + + ctrl->items = items; + ctrl->items_count = count; + ctrl->current_item = 0; + + rtgui_widget_get_rect(RTGUI_WIDGET(ctrl), &rect); + ctrl->page_items = rtgui_rect_height(rect) / (2 + rtgui_theme_get_selected_height()); + + rtgui_widget_update(RTGUI_WIDGET(ctrl)); +} + +rt_bool_t rtgui_listctrl_get_item_rect(rtgui_listctrl_t* ctrl, rt_uint16_t item, rtgui_rect_t* item_rect) +{ + if (item < ctrl->items_count) + { + rt_uint16_t index; + + /* check whether this item in current page */ + index = (ctrl->current_item / ctrl->page_items) * ctrl->page_items; + if (index > item || index + ctrl->page_items <= item) return RT_FALSE; + + rtgui_widget_get_extent(RTGUI_WIDGET(ctrl), item_rect); + item_rect->y1 -= 2; + item_rect->y1 += (item % ctrl->page_items) * (2 + rtgui_theme_get_selected_height()); + item_rect->y2 = item_rect->y1 + (2 + rtgui_theme_get_selected_height()); + return RT_TRUE; + } + + return RT_FALSE; +} |