271 lines
7.3 KiB
C
271 lines
7.3 KiB
C
#include <rtgui/dc.h>
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#include <rtgui/rtgui_theme.h>
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#include <rtgui/widgets/combobox.h>
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static rt_bool_t rtgui_combobox_pulldown_hide(struct rtgui_widget* widget, struct rtgui_event* event);
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const static rt_uint8_t down_arrow[] = {0xff, 0x7e, 0x3c, 0x18};
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static void _rtgui_combobox_constructor(rtgui_combobox_t *box)
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{
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rtgui_rect_t rect = {0, 0, RTGUI_COMBOBOX_WIDTH, RTGUI_COMBOBOX_HEIGHT};
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/* init widget and set event handler */
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rtgui_widget_set_event_handler(RTGUI_WIDGET(box), rtgui_combobox_event_handler);
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rtgui_widget_set_rect(RTGUI_WIDGET(box), &rect);
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RTGUI_WIDGET_TEXTALIGN(RTGUI_WIDGET(box)) = RTGUI_ALIGN_CENTER_VERTICAL;
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box->pd_pressed = RT_FALSE;
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box->current_item = 0;
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box->on_selected = RT_NULL;
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box->pd_win = RT_NULL;
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}
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static void _rtgui_combobox_destructor(rtgui_combobox_t *box)
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{
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/* destroy pull down window */
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rtgui_win_destroy(box->pd_win);
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/* reset box field */
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box->pd_win = RT_NULL;
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}
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void rtgui_combobox_pdwin_onitem(struct rtgui_widget* widget, struct rtgui_event* event)
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{
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rtgui_win_t* pd_win;
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rtgui_combobox_t* combo;
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rtgui_listbox_t* list;
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list = RTGUI_LISTBOX(widget);
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pd_win = RTGUI_WIN(rtgui_widget_get_toplevel(widget));
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combo = RTGUI_COMBOBOX(pd_win->user_data);
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combo->current_item = list->current_item;
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if (combo->on_selected != RT_NULL)
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combo->on_selected(RTGUI_WIDGET(combo), RT_NULL);
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rtgui_win_hiden(pd_win);
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rtgui_widget_update(RTGUI_WIDGET(combo));
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return ;
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}
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rt_bool_t rtgui_combobox_pdwin_ondeactive(struct rtgui_widget* widget, struct rtgui_event* event)
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{
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rtgui_win_hiden(RTGUI_WIN(widget));
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return RT_TRUE;
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}
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rtgui_type_t *rtgui_combobox_type_get(void)
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{
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static rtgui_type_t *combobox_type = RT_NULL;
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if (!combobox_type)
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{
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combobox_type = rtgui_type_create("combobox", RTGUI_WIDGET_TYPE,
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sizeof(rtgui_combobox_t),
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RTGUI_CONSTRUCTOR(_rtgui_combobox_constructor),
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RTGUI_DESTRUCTOR(_rtgui_combobox_destructor));
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}
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return combobox_type;
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}
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rtgui_combobox_t *rtgui_combobox_create(struct rtgui_listbox_item* items, rt_uint16_t count, struct rtgui_rect* rect)
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{
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rtgui_combobox_t *box;
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box = (rtgui_combobox_t*)rtgui_widget_create(RTGUI_COMBOBOX_TYPE);
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box->items_count = count;
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box->items = items;
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rtgui_widget_set_rect(RTGUI_WIDGET(box), rect);
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box->pd_win = RT_NULL;
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return box;
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}
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void rtgui_combobox_destroy(rtgui_combobox_t* box)
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{
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rtgui_widget_destroy(RTGUI_WIDGET(box));
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}
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static void rtgui_combobox_ondraw(struct rtgui_combobox* box)
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{
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/* draw button */
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rtgui_color_t bc;
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struct rtgui_dc* dc;
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struct rtgui_rect rect, r;
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/* begin drawing */
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dc = rtgui_dc_begin_drawing(RTGUI_WIDGET(box));
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if (dc == RT_NULL) return;
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bc = RTGUI_WIDGET_BACKGROUND(RTGUI_WIDGET(box));
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/* get widget rect */
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rtgui_widget_get_rect(RTGUI_WIDGET(box), &rect);
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RTGUI_WIDGET_BACKGROUND(RTGUI_WIDGET(box)) = white;
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/* fill widget rect with background color */
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rtgui_dc_fill_rect(dc, &rect);
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rtgui_dc_draw_rect(dc, &rect);
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/* draw current item */
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if (box->current_item < box->items_count)
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{
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rect.x1 += 5;
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rtgui_dc_draw_text(dc, box->items[box->current_item].name, &rect);
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}
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/* restore background color */
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RTGUI_WIDGET_BACKGROUND(RTGUI_WIDGET(box)) = bc;
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/* draw pull down button */
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rect.x1 = rect.x2 - RTGUI_COMBOBOX_BUTTON_WIDTH;
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rtgui_rect_inflate(&rect, -1);
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rtgui_dc_fill_rect(dc, &rect);
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if (box->pd_pressed == RT_TRUE) rtgui_dc_draw_border(dc, &rect, RTGUI_BORDER_SUNKEN);
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else rtgui_dc_draw_border(dc, &rect, RTGUI_BORDER_RAISE);
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r.x1 = 0; r.y1 = 0; r.x2 = 8; r.y2 = 4;
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rtgui_rect_moveto_align(&rect, &r, RTGUI_ALIGN_CENTER_HORIZONTAL | RTGUI_ALIGN_CENTER_VERTICAL);
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rtgui_dc_draw_byte(dc, r.x1, r.y1, 4, down_arrow);
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/* end drawing */
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rtgui_dc_end_drawing(dc);
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return;
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}
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static rt_bool_t rtgui_combobox_onmouse_button(struct rtgui_combobox* box, struct rtgui_event_mouse* event)
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{
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struct rtgui_rect rect;
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/* get widget rect */
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rect = RTGUI_WIDGET(box)->extent;
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/* move to the pull down button */
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rect.x1 = rect.x2 - RTGUI_COMBOBOX_BUTTON_WIDTH;
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if (rtgui_rect_contains_point(&rect, event->x, event->y) == RT_EOK)
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{
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/* handle mouse button on pull down button */
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if (event->button & RTGUI_MOUSE_BUTTON_LEFT &&
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event->button & RTGUI_MOUSE_BUTTON_DOWN)
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{
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box->pd_pressed = RT_TRUE;
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rtgui_widget_update(RTGUI_WIDGET(box));
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}
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else if (event->button & RTGUI_MOUSE_BUTTON_LEFT &&
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event->button & RTGUI_MOUSE_BUTTON_UP)
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{
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box->pd_pressed = RT_FALSE;
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rtgui_widget_update(RTGUI_WIDGET(box));
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/* pop pull down window */
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if (box->pd_win == RT_NULL)
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{
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rtgui_listbox_t *list;
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/* create pull down window */
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rect = RTGUI_WIDGET(box)->extent;
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rect.y1 = rect.y2;
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rect.y2 = rect.y1 + 5 * (2 + rtgui_theme_get_selected_height());
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box->pd_win = rtgui_win_create(RT_NULL, "combo", &rect, RTGUI_WIN_STYLE_NO_TITLE);
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rtgui_win_set_ondeactivate(RTGUI_WIN(box->pd_win), rtgui_combobox_pulldown_hide);
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/* set user data to parent combobox */
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box->pd_win->user_data = (rt_uint32_t)box;
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/* create list box */
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rtgui_rect_inflate(&rect, -1);
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list = rtgui_listbox_create(box->items, box->items_count, &rect);
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rtgui_container_add_child(RTGUI_CONTAINER(box->pd_win), RTGUI_WIDGET(list));
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rtgui_widget_focus(RTGUI_WIDGET(list));
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rtgui_listbox_set_onitem(list, rtgui_combobox_pdwin_onitem);
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rtgui_win_set_ondeactivate(box->pd_win, rtgui_combobox_pdwin_ondeactive);
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}
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/* show combo box pull down window */
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rtgui_win_show(RTGUI_WIN(box->pd_win), RT_FALSE);
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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_combobox_event_handler(struct rtgui_widget* widget, struct rtgui_event* event)
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{
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struct rtgui_combobox* box = (struct rtgui_combobox*)widget;
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switch (event->type)
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{
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case RTGUI_EVENT_PAINT:
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#ifndef RTGUI_USING_SMALL_SIZE
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if (widget->on_draw != RT_NULL) widget->on_draw(widget, event);
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else
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#endif
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rtgui_combobox_ondraw(box);
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break;
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case RTGUI_EVENT_MOUSE_BUTTON:
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return rtgui_combobox_onmouse_button(box, (struct rtgui_event_mouse*)event);
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case RTGUI_EVENT_FOCUSED:
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{
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/* item focused */
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struct rtgui_item* item;
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struct rtgui_event_focused* focused;
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focused = (struct rtgui_event_focused*) event;
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item = (struct rtgui_item*) (focused->widget);
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if (item != RT_NULL)
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{
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/* hide pull down window */
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rtgui_win_hiden(RTGUI_WIN(box->pd_win));
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rtgui_combobox_ondraw(box);
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}
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}
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break;
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}
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return RT_FALSE;
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}
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static rt_bool_t rtgui_combobox_pulldown_hide(struct rtgui_widget* widget, struct rtgui_event* event)
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{
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struct rtgui_combobox* box;
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if (widget == RT_NULL) return RT_TRUE;
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box = (struct rtgui_combobox*) (((struct rtgui_win*)widget)->user_data);
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if (box == RT_NULL) return RT_TRUE;
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/* hide pull down window */
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rtgui_win_hiden(RTGUI_WIN(box->pd_win));
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/* clear pull down button state */
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box->pd_pressed = RT_FALSE;
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rtgui_widget_update(RTGUI_WIDGET(box));
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return RT_TRUE;
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}
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struct rtgui_listbox_item* rtgui_combox_get_select(struct rtgui_combobox* box)
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{
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if ((box != RT_NULL) && (box->current_item < box->items_count))
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{
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return &(box->items[box->current_item]);
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}
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return RT_NULL;
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}
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void rtgui_combobox_set_onselected(struct rtgui_combobox* box, rtgui_onitem_func_t func)
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{
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box->on_selected = func;
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}
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