rt-thread-official/examples/gui/demo_view_image.c

/*
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>嵥<EFBFBD><EFBFBD>DC<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ
 *
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӻ<EFBFBD><EFBFBD>ڴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>container<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾͼ<EFBFBD><EFBFBD>
 */

#include "demo_view.h"
#include <rtgui/widgets/button.h>
#include <rtgui/widgets/filelist_view.h>
#include <string.h>

static rtgui_image_t *image = RT_NULL;
static rtgui_container_t *_container = RT_NULL;

#if defined(RTGUI_USING_DFS_FILERW) || defined(RTGUI_USING_STDIO_FILERW)
/* <20>򿪰<EFBFBD>ť<EFBFBD>Ļص<C4BB><D8B5><EFBFBD><EFBFBD><EFBFBD> */
static void open_btn_onbutton(rtgui_widget_t *widget, struct rtgui_event *event)
{
    rtgui_filelist_view_t *filelist;
    struct rtgui_rect rect = {0, 100, 240, 280};

    /* WIN32ƽ̨<C6BD>Ϻ<EFBFBD><CFBA><EFBFBD>ʵ<EFBFBD>豸<EFBFBD>ϵij<CFB5>ʼ·<CABC><C2B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
#ifdef _WIN32
    filelist = rtgui_filelist_view_create("e:\\", "*.*", &rect);
#else
    filelist = rtgui_filelist_view_create("/", "*.*", &rect);
#endif
    /* ģ̬<C4A3><CCAC>ʾһ<CABE><D2BB><EFBFBD>ļ<EFBFBD><C4BC>б<EFBFBD><D0B1><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD><EFBFBD>ṩ<EFBFBD><E1B9A9><EFBFBD>û<EFBFBD>ѡ<EFBFBD><D1A1>ͼ<EFBFBD><CDBC><EFBFBD>ļ<EFBFBD> */
    if (rtgui_widget_show(RTGUI_WIDGET(filelist), RT_TRUE) == RTGUI_MODAL_OK)
    {
        char path[32], image_type[8];

        /* <20><><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>·<EFBFBD><C2B7><EFBFBD>ı<EFBFBD>ǩ */
        rtgui_filelist_view_get_fullpath(filelist, path, sizeof(path));
        if (image != RT_NULL)
        {
            rtgui_image_destroy(image);
            image = RT_NULL;
        }

        rt_memset(image_type, 0, sizeof(image_type));

        /* <20><><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
        if (rt_strstr(path, ".bmp") != RT_NULL ||
                rt_strstr(path, ".BMP") != RT_NULL)
            strcat(image_type, "bmp");
        if (rt_strstr(path, ".png") != RT_NULL ||
                rt_strstr(path, ".PNG") != RT_NULL)
            strcat(image_type, "png");
        if (rt_strstr(path, ".jpg") != RT_NULL ||
                rt_strstr(path, ".JPG") != RT_NULL)
            strcat(image_type, "jpeg");
        if (rt_strstr(path, ".hdc") != RT_NULL ||
                rt_strstr(path, ".HDC") != RT_NULL)
            strcat(image_type, "hdc");

        /* <20><><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD>ļ<EFBFBD><C4BC><EFBFBD>Ч<EFBFBD><D0A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6>rtgui_image<67><65><EFBFBD><EFBFBD> */
        if (image_type[0] != '\0')
            image = rtgui_image_create_from_file(image_type, path, RT_TRUE);
    }

    /* ɾ<><C9BE> <20>ļ<EFBFBD><C4BC>б<EFBFBD> <20><>ͼ */
    rtgui_container_destroy(RTGUI_CONTAINER(filelist));
    rtgui_container_show(_container, RT_FALSE);
}

/* <20><>ʾ<EFBFBD><CABE>ͼ<EFBFBD><CDBC><EFBFBD>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
static rt_bool_t demo_view_event_handler(rtgui_widget_t *widget, rtgui_event_t *event)
{
    rt_bool_t result;

    /* <20>ȵ<EFBFBD><C8B5><EFBFBD>Ĭ<EFBFBD>ϵ<EFBFBD><CFB5>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(<28><><EFBFBD><EFBFBD>ֻ<EFBFBD><D6BB><EFBFBD><EFBFBD>PAINT<4E>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><CABE>ͼ<EFBFBD><CDBC><EFBFBD>б<EFBFBD><D0B1><EFBFBD><EFBFBD><EFBFBD>һЩ<D2BB>ؼ<EFBFBD>) */
    result = rtgui_container_event_handler(widget, event);

    if (event->type == RTGUI_EVENT_PAINT)
    {
        struct rtgui_dc *dc;
        rtgui_rect_t rect;

        /* <20><><EFBFBD>ÿؼ<C3BF><D8BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>DC */
        dc = rtgui_dc_begin_drawing(widget);
        if (dc == RT_NULL)
            /* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>DC<44><43><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(<28><><EFBFBD><EFBFBD><EFBFBD>ؼ<EFBFBD><D8BC>򸸿ؼ<F2B8B8BF><D8BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>״̬<D7B4><CCAC>DC<44>ǻ<EFBFBD>ȡ<EFBFBD><C8A1><EFBFBD>ɹ<EFBFBD><C9B9><EFBFBD>) */
            return RT_FALSE;

        /* <20><><EFBFBD><EFBFBD>demo container<65><72><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
        demo_view_get_rect(RTGUI_CONTAINER(widget), &rect);

        /* <20><><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD> */
        rect.x1 += 5;
        rect.x2 -= 5;
        rect.y1 += 30;

        if (image != RT_NULL)
            rtgui_image_blit(image, dc, &rect);

        /* <20><>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD> */
        rtgui_dc_end_drawing(dc);
    }

    return result;
}

/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾͼ<CABE><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><CABE>ͼ */
rtgui_container_t *demo_view_image(void)
{
    rtgui_rect_t rect;
    rtgui_button_t *open_btn;

    /* <20>ȴ<EFBFBD><C8B4><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>ʾ<EFBFBD><CABE>ͼ */
    _container = demo_view("ͼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ");
    if (_container != RT_NULL)
        /* <20><><EFBFBD><EFBFBD>Ĭ<EFBFBD>ϵ<EFBFBD><CFB5>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>demo_view_event_handler<65><72><EFBFBD><EFBFBD> */
        rtgui_object_set_event_handler(RTGUI_WIDGET(_container), demo_view_event_handler);

    /* <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD>ť */
    demo_view_get_rect(_container, &rect);
    rect.x1 += 5;
    rect.x2 = rect.x1 + 120;
    rect.y2 = rect.y1 + 20;
    open_btn = rtgui_button_create("<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>");
    rtgui_container_add_child(RTGUI_CONTAINER(_container), RTGUI_WIDGET(open_btn));
    rtgui_widget_set_rect(RTGUI_WIDGET(open_btn), &rect);
    rtgui_button_set_onbutton(open_btn, open_btn_onbutton);

    return _container;
}
#endif