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

/*
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>嵥<EFBFBD><EFBFBD>TTF<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD>ʾ
 *
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӻ<EFBFBD><EFBFBD>ڴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>container<EFBFBD>Ͻ<EFBFBD><EFBFBD><EFBFBD>TTF<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ
 */

#include "demo_view.h"
#include <rtgui/dc.h>
#include <rtgui/font.h>
#include <rtgui/rtgui_system.h>

#ifdef RTGUI_USING_TTF
static rtgui_font_t *font_16, *font_24, *font_36, *font_48;

/*
 * container<EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 */
rt_bool_t ttf_event_handler(struct rtgui_object *object, rtgui_event_t *event)
{
    struct rtgui_widget *widget = RTGUI_WIDGET(object);

    /* <20><><EFBFBD><EFBFBD>PAINT<4E>¼<EFBFBD><C2BC><EFBFBD><EFBFBD>д<EFBFBD><D0B4><EFBFBD> */
    if (event->type == RTGUI_EVENT_PAINT)
    {
        struct rtgui_dc *dc;
        rtgui_rect_t rect;
        rtgui_font_t *saved;

        /*
         * <EFBFBD><EFBFBD>Ϊ<EFBFBD>õ<EFBFBD><EFBFBD><EFBFBD>demo container<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>汾<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD><EFBFBD>ֿؼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڻ<EFBFBD>ͼʱ<EFBFBD><EFBFBD>Ҫ<EFBFBD><EFBFBD>demo container
         * <EFBFBD>Ȼ<EFBFBD>ͼ
         */
        rtgui_container_event_handler(widget, event);

        /************************************************************************/
        /* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>DC<44>IJ<EFBFBD><C4B2><EFBFBD>                                                     */
        /************************************************************************/

        /* <20><><EFBFBD>ÿؼ<C3BF><D8BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>DC */
        dc = rtgui_dc_begin_drawing(widget);
        /* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>DC<44><43><EFBFBD><EFBFBD><EFBFBD>أ<EFBFBD><D8A3><EFBFBD><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>ģ<EFBFBD> */
        if (dc == RT_NULL)
            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);

        saved = RTGUI_WIDGET_FONT(widget);

        RTGUI_WIDGET_FONT(widget) = font_16;
        rtgui_dc_draw_text(dc, "ABCD<EFBFBD><EFBFBD><EFBFBD><EFBFBD>", &rect);
        rect.y1 += 18;

        RTGUI_WIDGET_FONT(widget) = font_24;
        rtgui_dc_draw_text(dc, "ABCD<EFBFBD><EFBFBD><EFBFBD><EFBFBD>", &rect);
        rect.y1 += 26;

        RTGUI_WIDGET_FONT(widget) = font_36;
        rtgui_dc_draw_text(dc, "ABCD<EFBFBD><EFBFBD><EFBFBD><EFBFBD>", &rect);
        rect.y1 += 38;

        RTGUI_WIDGET_FONT(widget) = font_48;
        rtgui_dc_draw_text(dc, "ABCD<EFBFBD><EFBFBD><EFBFBD><EFBFBD>", &rect);

        RTGUI_WIDGET_FONT(widget) = saved;
        /* <20><>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD> */
        rtgui_dc_end_drawing(dc);
    }
    else
    {
        /* <20><><EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĭ<EFBFBD>ϵ<EFBFBD><CFB5>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
        return rtgui_container_event_handler(widget, event);
    }

    return RT_FALSE;
}

/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>TTF<54><46><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD><CABE>ʾ<EFBFBD>õ<EFBFBD><C3B5><EFBFBD>ͼ */
rtgui_container_t *demo_view_ttf()
{
    rtgui_container_t *container;

    font_16 = rtgui_freetype_font_create("d:/simsun.ttf", 0, 0, 16);
    font_24 = rtgui_freetype_font_create("d:/simsun.ttf", 0, 0, 24);
    font_36 = rtgui_freetype_font_create("d:/simsun.ttf", 0, 0, 36);
    font_48 = rtgui_freetype_font_create("d:/simsun.TTF", 0, 0, 72);

    container = demo_view("TTF <20><>ʾ");
    if (container != RT_NULL)
    {
        RTGUI_WIDGET_BACKGROUND(container) = white;
        /* <20><><EFBFBD>ó<EFBFBD><C3B3>Լ<EFBFBD><D4BC><EFBFBD><EFBFBD>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
        rtgui_object_set_event_handler(RTGUI_OBJECT(container), ttf_event_handler);
    }

    return container;
}
#endif