637 lines
18 KiB
C
637 lines
18 KiB
C
/*
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* File : list_view.c
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* This file is part of RTGUI in RT-Thread RTOS
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* COPYRIGHT (C) 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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* 2010-01-06 Bernard first version
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*/
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#include <rtgui/rtgui_theme.h>
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#include <rtgui/widgets/list_view.h>
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#define LIST_MARGIN 5
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static void _rtgui_list_view_constructor(struct rtgui_list_view *view)
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{
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/* default rect */
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struct rtgui_rect rect = {0, 0, 200, 200};
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/* set default widget rect and set event handler */
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rtgui_object_set_event_handler(RTGUI_OBJECT(view),rtgui_list_view_event_handler);
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rtgui_widget_set_rect(RTGUI_WIDGET(view), &rect);
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RTGUI_WIDGET(view)->flag |= RTGUI_WIDGET_FLAG_FOCUSABLE;
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view->flag = RTGUI_LIST_VIEW_LIST;
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view->current_item = 0;
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view->items_count = 0;
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view->page_items = 0;
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RTGUI_WIDGET_BACKGROUND(RTGUI_WIDGET(view)) = white;
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RTGUI_WIDGET_TEXTALIGN(RTGUI_WIDGET(view)) = RTGUI_ALIGN_CENTER_VERTICAL;
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}
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DEFINE_CLASS_TYPE(listview, "listview",
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RTGUI_CONTAINER_TYPE,
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_rtgui_list_view_constructor,
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RT_NULL,
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sizeof(struct rtgui_list_view));
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static void rtgui_list_view_onicondraw(struct rtgui_list_view* view, struct rtgui_dc *dc)
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{
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struct rtgui_rect rect, item_rect, drawing_rect;
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rt_ubase_t c, r, item_index; /* col and row index */
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rt_ubase_t item_width, item_height;
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rtgui_image_t* image;
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if (view->items_count == 0) return;
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rtgui_widget_get_rect(RTGUI_WIDGET(view), &rect);
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item_index = (view->current_item / view->page_items) * view->page_items;
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item_width = (rtgui_rect_width(rect) - 2 * LIST_MARGIN)/view->col_items;
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item_height = (rtgui_rect_height(rect) - 4)/view->row_items;
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image = view->items[0].image;
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for (r = 0; r < view->row_items; r ++)
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{
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for (c = 0; c < view->col_items; c ++)
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{
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if (item_index < view->items_count)
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{
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item_rect.y1 = rect.y1 + LIST_MARGIN + r * item_height;
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item_rect.x1 = rect.x1 + LIST_MARGIN + c * item_width;
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item_rect.x2 = item_rect.x1 + item_width;
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item_rect.y2 = item_rect.y1 + item_height;
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if (item_index == view->current_item)
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{
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rtgui_theme_draw_selected(dc, &item_rect);
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}
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drawing_rect.x1 = drawing_rect.y1 = 0;
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drawing_rect.x2 = image->w;
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drawing_rect.y2 = image->h;
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rtgui_rect_moveto_align(&item_rect, &drawing_rect, RTGUI_ALIGN_CENTER_HORIZONTAL);
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drawing_rect.y1 += 5; drawing_rect.y2 += 5;
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rtgui_image_blit(view->items[item_index].image, dc, &drawing_rect);
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item_rect.y1 = drawing_rect.y2 + LIST_MARGIN;
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item_rect.x1 += 3; item_rect.x2 -=3;
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rtgui_font_get_metrics(RTGUI_WIDGET_FONT(RTGUI_WIDGET(view)), view->items[item_index].name,
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&drawing_rect);
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rtgui_rect_moveto_align(&item_rect, &drawing_rect, RTGUI_ALIGN_CENTER_HORIZONTAL);
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rtgui_dc_draw_text(dc, view->items[item_index].name, &drawing_rect);
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item_index ++;
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}
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else break;
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}
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}
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}
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static void rtgui_list_view_update_icon(struct rtgui_list_view* view, rt_int16_t old_item)
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{
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struct rtgui_rect rect, item_rect, drawing_rect;
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rt_ubase_t c, r; /* col and row index */
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rt_ubase_t item_width, item_height;
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rtgui_image_t* image;
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struct rtgui_dc* dc;
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if ((view->items_count == 0) ||
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(old_item == view->current_item))
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return;
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if (old_item/view->page_items != view->current_item/view->page_items)
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{
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/* it's not a same page, update all */
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rtgui_widget_update(RTGUI_WIDGET(view));
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return;
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}
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dc = rtgui_dc_begin_drawing(RTGUI_WIDGET(view));
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if (dc == RT_NULL) return;
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rtgui_widget_get_rect(RTGUI_WIDGET(view), &rect);
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item_width = (rtgui_rect_width(rect) - 2 * LIST_MARGIN)/view->col_items;
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item_height = (rtgui_rect_height(rect) - 4)/view->row_items;
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image = view->items[0].image;
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/* update old item */
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r = (old_item % view->page_items)/ view->col_items;
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c = (old_item % view->page_items)% view->col_items;
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item_rect.y1 = rect.y1 + LIST_MARGIN + r * item_height;
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item_rect.x1 = rect.x1 + LIST_MARGIN + c * item_width;
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item_rect.x2 = item_rect.x1 + item_width;
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item_rect.y2 = item_rect.y1 + item_height;
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rtgui_dc_fill_rect(dc, &item_rect);
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/* draw image */
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drawing_rect.x1 = drawing_rect.y1 = 0;
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drawing_rect.x2 = image->w;
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drawing_rect.y2 = image->h;
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rtgui_rect_moveto_align(&item_rect, &drawing_rect, RTGUI_ALIGN_CENTER_HORIZONTAL);
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drawing_rect.y1 += 5; drawing_rect.y2 += 5;
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rtgui_image_blit(view->items[old_item].image, dc, &drawing_rect);
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/* draw text */
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item_rect.y1 = drawing_rect.y2 + LIST_MARGIN;
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item_rect.x1 += 3; item_rect.x2 -=3;
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rtgui_font_get_metrics(RTGUI_WIDGET_FONT(RTGUI_WIDGET(view)), view->items[old_item].name,
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&drawing_rect);
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rtgui_rect_moveto_align(&item_rect, &drawing_rect, RTGUI_ALIGN_CENTER_HORIZONTAL);
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rtgui_dc_draw_text(dc, view->items[old_item].name, &drawing_rect);
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/* update new item as selected */
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r = (view->current_item % view->page_items) / view->col_items;
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c = (view->current_item % view->page_items) % view->col_items;
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item_rect.y1 = rect.y1 + LIST_MARGIN + r * item_height;
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item_rect.x1 = rect.x1 + LIST_MARGIN + c * item_width;
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item_rect.x2 = item_rect.x1 + item_width;
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item_rect.y2 = item_rect.y1 + item_height;
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rtgui_theme_draw_selected(dc, &item_rect);
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/* draw image */
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drawing_rect.x1 = 0;
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drawing_rect.y1 = 3;
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drawing_rect.x2 = image->w;
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drawing_rect.y2 = 3 + image->h;
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rtgui_rect_moveto_align(&item_rect, &drawing_rect, RTGUI_ALIGN_CENTER_HORIZONTAL);
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rtgui_image_blit(view->items[view->current_item].image, dc, &drawing_rect);
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/* draw text */
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item_rect.y1 = drawing_rect.y2 + LIST_MARGIN;
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item_rect.x1 += 3; item_rect.x2 -=3;
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rtgui_font_get_metrics(RTGUI_WIDGET_FONT(RTGUI_WIDGET(view)),
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view->items[view->current_item].name,
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&drawing_rect);
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rtgui_rect_moveto_align(&item_rect, &drawing_rect, RTGUI_ALIGN_CENTER_HORIZONTAL);
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rtgui_dc_draw_text(dc, view->items[view->current_item].name, &drawing_rect);
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rtgui_dc_end_drawing(dc);
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}
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static void rtgui_list_view_onlistdraw(struct rtgui_list_view* view, struct rtgui_dc *dc)
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{
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rt_ubase_t index, page_index;
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rtgui_rect_t rect, item_rect, image_rect;
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const struct rtgui_list_item* item;
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rtgui_widget_get_rect(RTGUI_WIDGET(view), &rect);
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/* get item base rect */
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item_rect = rect;
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item_rect.y1 += 2;
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item_rect.y2 = item_rect.y1 + (2 + rtgui_theme_get_selected_height());
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/* get current page */
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page_index = (view->current_item / view->page_items) * view->page_items;
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for (index = 0; index < view->page_items; index ++)
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{
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if (page_index + index >= view->items_count) break;
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item = &(view->items[page_index + index]);
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if (page_index + index == view->current_item)
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{
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rtgui_theme_draw_selected(dc, &item_rect);
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}
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item_rect.x1 += LIST_MARGIN;
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if (item->image != RT_NULL)
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{
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/* blit on center */
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image_rect.x1 = 0; image_rect.y1 = 0;
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image_rect.x2 = item->image->w;
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image_rect.y2 = item->image->h;
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rtgui_rect_moveto_align(&item_rect, &image_rect, RTGUI_ALIGN_CENTER_VERTICAL);
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rtgui_image_blit(item->image, dc, &image_rect);
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item_rect.x1 += item->image->w + 2;
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}
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/* draw text */
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rtgui_dc_draw_text(dc, item->name, &item_rect);
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if (item->image != RT_NULL)
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item_rect.x1 -= (item->image->w + 2);
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item_rect.x1 -= LIST_MARGIN;
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/* move to next item position */
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item_rect.y1 += (rtgui_theme_get_selected_height() + 2);
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item_rect.y2 += (rtgui_theme_get_selected_height() + 2);
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}
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}
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void rtgui_list_view_update_list(struct rtgui_list_view* view, rt_int16_t old_item)
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{
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struct rtgui_dc* dc;
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const struct rtgui_list_item* item;
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rtgui_rect_t rect, item_rect;
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if (old_item/view->page_items != view->current_item/view->page_items)
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{
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/* it's not a same page, update all */
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rtgui_widget_update(RTGUI_WIDGET(view));
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return;
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}
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dc = rtgui_dc_begin_drawing(RTGUI_WIDGET(view));
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if (dc == RT_NULL) return;
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rtgui_widget_get_rect(RTGUI_WIDGET(view), &rect);
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/* get old item's rect and draw old item */
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item_rect.x1 = rect.x1; item_rect.x2 = rect.x2;
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item_rect.y1 = rect.y1 + 2;
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item_rect.y1 += (old_item % view->page_items) * (2 + rtgui_theme_get_selected_height());
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item_rect.y2 = item_rect.y1 + (2 + rtgui_theme_get_selected_height());
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rtgui_dc_fill_rect(dc, &item_rect);
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item_rect.x1 += LIST_MARGIN;
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item = &(view->items[old_item]);
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if (item->image != RT_NULL)
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{
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struct rtgui_rect image_rect;
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/* blit on center */
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image_rect.x1 = 0; image_rect.y1 = 0;
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image_rect.x2 = item->image->w;
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image_rect.y2 = item->image->h;
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rtgui_rect_moveto_align(&item_rect, &image_rect, RTGUI_ALIGN_CENTER_VERTICAL);
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rtgui_image_blit(item->image, dc, &image_rect);
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item_rect.x1 += item->image->w + 2;
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}
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rtgui_dc_draw_text(dc, item->name, &item_rect);
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/* draw current item */
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item_rect = rect;
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/* get current item's rect */
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item_rect.y1 += 2;
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item_rect.y1 += (view->current_item % view->page_items) * (2 + rtgui_theme_get_selected_height());
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item_rect.y2 = item_rect.y1 + (2 + rtgui_theme_get_selected_height());
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/* draw current item */
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rtgui_theme_draw_selected(dc, &item_rect);
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item_rect.x1 += LIST_MARGIN;
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item = &(view->items[view->current_item]);
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if (item->image != RT_NULL)
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{
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struct rtgui_rect image_rect;
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/* blit on center */
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image_rect.x1 = 0; image_rect.y1 = 0;
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image_rect.x2 = item->image->w;
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image_rect.y2 = item->image->h;
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rtgui_rect_moveto_align(&item_rect, &image_rect, RTGUI_ALIGN_CENTER_VERTICAL);
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rtgui_image_blit(item->image, dc, &image_rect);
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item_rect.x1 += (item->image->w + 2);
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}
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rtgui_dc_draw_text(dc, item->name, &item_rect);
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rtgui_dc_end_drawing(dc);
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}
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void rtgui_list_view_ondraw(struct rtgui_list_view* view)
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{
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struct rtgui_rect rect;
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struct rtgui_dc* dc;
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dc = rtgui_dc_begin_drawing(RTGUI_WIDGET(view));
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if (dc == RT_NULL) return;
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rtgui_widget_get_rect(RTGUI_WIDGET(view), &rect);
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rtgui_dc_fill_rect(dc, &rect);
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switch (view->flag)
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{
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case RTGUI_LIST_VIEW_LIST:
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rtgui_list_view_onlistdraw(view, dc);
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break;
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case RTGUI_LIST_VIEW_ICON:
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rtgui_list_view_onicondraw(view, dc);
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break;
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}
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rtgui_dc_end_drawing(dc);
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}
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static rt_bool_t rtgui_list_view_onmouse(struct rtgui_list_view* view, struct rtgui_event_mouse* emouse)
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{
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rtgui_rect_t rect;
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/* calculate selected item */
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/* get physical extent information */
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rtgui_widget_get_rect(RTGUI_WIDGET(view), &rect);
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rtgui_widget_rect_to_device(RTGUI_WIDGET(view), &rect);
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if (rtgui_rect_contains_point(&rect, emouse->x, emouse->y) == RT_EOK)
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{
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rt_uint16_t index;
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rt_uint16_t old_item;
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/* get old item */
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old_item = view->current_item;
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switch (view->flag)
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{
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case RTGUI_LIST_VIEW_LIST:
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index = (emouse->y - rect.y1) / (2 + rtgui_theme_get_selected_height());
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if ((index < view->items_count) && (index < view->page_items))
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{
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/* set selected item */
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view->current_item = (view->current_item/view->page_items) * view->page_items + index;
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if (emouse->button & RTGUI_MOUSE_BUTTON_DOWN)
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{
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/* down event */
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rtgui_list_view_update_list(view, old_item);
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}
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else
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{
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/* up event */
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if (view->items[view->current_item].action != RT_NULL)
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{
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view->items[view->current_item].action(RTGUI_WIDGET(view),
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view->items[view->current_item].parameter);
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}
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}
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}
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break;
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case RTGUI_LIST_VIEW_ICON:
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{
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rt_uint16_t x, y;
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rt_uint16_t item_height, item_width;
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rt_ubase_t current_page;
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item_width = (rtgui_rect_width(rect) - 2 * LIST_MARGIN)/view->col_items;
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item_height = (rtgui_rect_height(rect) - 4)/view->row_items;
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x = emouse->x - rect.x1;
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y = emouse->y - rect.y1;
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index = (y / item_height * view->col_items) + x / item_width;
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current_page = view->current_item / view->page_items;
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if ((index + (current_page * view->page_items) < view->items_count))
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{
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if (emouse->button & RTGUI_MOUSE_BUTTON_DOWN)
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{
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view->current_item = index + (current_page * view->page_items);
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/* down event */
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rtgui_list_view_update_icon(view, old_item);
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}
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else
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{
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/* up event */
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if (view->items[view->current_item].action != RT_NULL)
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{
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view->items[view->current_item].action(RTGUI_WIDGET(view),
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view->items[view->current_item].parameter);
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}
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}
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}
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}
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break;
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case RTGUI_LIST_VIEW_REPORT:
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break;
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}
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return RT_TRUE;
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}
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return RT_FALSE;
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}
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rt_bool_t rtgui_list_view_event_handler(struct rtgui_object* widget, struct rtgui_event* event)
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{
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struct rtgui_list_view* view = RT_NULL;
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view = RTGUI_LIST_VIEW(widget);
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switch (event->type)
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{
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case RTGUI_EVENT_PAINT:
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rtgui_list_view_ondraw(view);
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return RT_FALSE;
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case RTGUI_EVENT_RESIZE:
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{
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struct rtgui_event_resize* resize;
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resize = (struct rtgui_event_resize*)event;
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/* recalculate page items */
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view->page_items = resize->h / (2 + rtgui_theme_get_selected_height());
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}
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break;
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case RTGUI_EVENT_MOUSE_BUTTON:
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{
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struct rtgui_event_mouse* emouse;
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emouse = (struct rtgui_event_mouse*)event;
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return rtgui_list_view_onmouse(view, emouse);
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}
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case RTGUI_EVENT_KBD:
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{
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struct rtgui_event_kbd* ekbd = (struct rtgui_event_kbd*)event;
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if (ekbd->type == RTGUI_KEYDOWN)
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{
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rt_uint16_t old_item;
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if (view->current_item == -1)
|
|
{
|
|
/* set a initial item */
|
|
if ((view->items_count > 0) &&
|
|
(ekbd->key == RTGUIK_UP || ekbd->key == RTGUIK_DOWN))
|
|
{
|
|
view->current_item = 0;
|
|
if (view->flag == RTGUI_LIST_VIEW_LIST)
|
|
rtgui_list_view_update_list(view, -1);
|
|
else
|
|
rtgui_list_view_update_icon(view, -1);
|
|
break;
|
|
}
|
|
else return RT_FALSE;
|
|
}
|
|
|
|
old_item = view->current_item;
|
|
switch (ekbd->key)
|
|
{
|
|
case RTGUIK_LEFT:
|
|
if (view->flag == RTGUI_LIST_VIEW_LIST)
|
|
{
|
|
if (view->current_item - view->page_items >= 0)
|
|
view->current_item -= view->page_items;
|
|
|
|
rtgui_list_view_update_list(view, old_item);
|
|
}
|
|
else if (view->flag == RTGUI_LIST_VIEW_ICON)
|
|
{
|
|
if (view->current_item > 0)
|
|
view->current_item --;
|
|
rtgui_list_view_update_icon(view, old_item);
|
|
}
|
|
return RT_FALSE;
|
|
|
|
case RTGUIK_UP:
|
|
if (view->flag == RTGUI_LIST_VIEW_LIST)
|
|
{
|
|
if (view->current_item > 0)
|
|
view->current_item --;
|
|
rtgui_list_view_update_list(view, old_item);
|
|
}
|
|
else if (view->flag == RTGUI_LIST_VIEW_ICON)
|
|
{
|
|
if (view->current_item >= view->col_items)
|
|
view->current_item -= view->col_items;
|
|
else
|
|
view->current_item = 0;
|
|
|
|
rtgui_list_view_update_icon(view, old_item);
|
|
}
|
|
return RT_FALSE;
|
|
|
|
case RTGUIK_RIGHT:
|
|
if (view->flag == RTGUI_LIST_VIEW_LIST)
|
|
{
|
|
if (view->current_item + view->page_items < view->items_count - 1)
|
|
view->current_item += view->page_items;
|
|
|
|
rtgui_list_view_update_list(view, old_item);
|
|
}
|
|
else if (view->flag == RTGUI_LIST_VIEW_ICON)
|
|
{
|
|
if (view->current_item < view->items_count - 1)
|
|
view->current_item ++;
|
|
|
|
rtgui_list_view_update_icon(view, old_item);
|
|
}
|
|
return RT_FALSE;
|
|
|
|
case RTGUIK_DOWN:
|
|
if (view->flag == RTGUI_LIST_VIEW_LIST)
|
|
{
|
|
if (view->current_item < view->items_count - 1)
|
|
view->current_item ++;
|
|
|
|
rtgui_list_view_update_list(view, old_item);
|
|
}
|
|
else if (view->flag == RTGUI_LIST_VIEW_ICON)
|
|
{
|
|
if (view->current_item + view->col_items <= (view->items_count - 1))
|
|
view->current_item += view->col_items;
|
|
else
|
|
view->current_item = view->items_count - 1;
|
|
|
|
rtgui_list_view_update_icon(view, old_item);
|
|
}
|
|
return RT_FALSE;
|
|
|
|
case RTGUIK_RETURN:
|
|
if (view->items[view->current_item].action != RT_NULL)
|
|
{
|
|
view->items[view->current_item].action(RTGUI_WIDGET(view),
|
|
view->items[view->current_item].parameter);
|
|
}
|
|
return RT_FALSE;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return RT_FALSE;
|
|
}
|
|
|
|
/* use view event handler */
|
|
return rtgui_container_event_handler(widget, event);
|
|
}
|
|
|
|
static void rtgui_list_view_calc(struct rtgui_list_view* view)
|
|
{
|
|
rtgui_rect_t rect;
|
|
rt_uint32_t image_width, image_height;
|
|
rt_ubase_t text_width, text_height;
|
|
rt_ubase_t item_width, item_height;
|
|
|
|
if (view->items_count == 0) return;
|
|
|
|
/* get image width and height */
|
|
if (view->items[0].image != RT_NULL)
|
|
{
|
|
image_width = view->items[0].image->w;
|
|
image_height = view->items[0].image->h;
|
|
}
|
|
else
|
|
{
|
|
image_width = 0;
|
|
image_height = 0;
|
|
}
|
|
|
|
rtgui_font_get_metrics(RTGUI_WIDGET_FONT(RTGUI_WIDGET(view)), "HHHHHH", &rect);
|
|
|
|
text_height = rtgui_rect_height(rect);
|
|
text_width = rtgui_rect_width(rect);
|
|
|
|
rtgui_widget_get_rect(RTGUI_WIDGET(view), &rect);
|
|
|
|
item_width = (image_width + LIST_MARGIN);
|
|
if (item_width < (text_width + LIST_MARGIN)) item_width = text_width + LIST_MARGIN;
|
|
item_height = image_height + 8 + text_height + LIST_MARGIN;
|
|
if (item_width > item_height) item_height = item_width;
|
|
else item_width = item_height;
|
|
|
|
view->row_items = (rtgui_rect_height(rect) - 2 * LIST_MARGIN) / item_height;
|
|
view->col_items = (rtgui_rect_width(rect) - 2 * LIST_MARGIN) / item_width;
|
|
view->page_items = view->row_items * view->col_items;
|
|
}
|
|
|
|
rtgui_list_view_t* rtgui_list_view_create(const struct rtgui_list_item* items, rt_uint16_t count,
|
|
rtgui_rect_t *rect, rt_uint16_t flag)
|
|
{
|
|
struct rtgui_list_view* view = RT_NULL;
|
|
|
|
view = (struct rtgui_list_view*) rtgui_widget_create(RTGUI_LIST_VIEW_TYPE);
|
|
if (view != RT_NULL)
|
|
{
|
|
view->items = items;
|
|
view->items_count = count;
|
|
|
|
view->flag = flag;
|
|
rtgui_widget_set_rect(RTGUI_WIDGET(view), rect);
|
|
|
|
if (flag == RTGUI_LIST_VIEW_LIST)
|
|
view->page_items = rtgui_rect_height(*rect) / (2 + rtgui_theme_get_selected_height());
|
|
else if ((flag == RTGUI_LIST_VIEW_ICON) && (count > 0))
|
|
{
|
|
rtgui_list_view_calc(view);
|
|
}
|
|
}
|
|
|
|
return view;
|
|
}
|
|
|
|
void rtgui_list_view_destroy(rtgui_list_view_t* view)
|
|
{
|
|
/* destroy view */
|
|
rtgui_widget_destroy(RTGUI_WIDGET(view));
|
|
}
|