rtt-f030/components/gui/example/gui_demo.c

125 lines
2.9 KiB
C

#include <rtthread.h>
#if defined(RT_USING_GUIENGINE) && defined(RTGUI_USING_DEMO)
#include <rtgui/rtgui.h>
#include <rtgui/rtgui_system.h>
#include <rtgui/rtgui_app.h>
#include <rtgui/image.h>
#include <rtgui/widgets/window.h>
#include <rtgui/dc.h>
extern const static unsigned char _picture_png[];
static rt_bool_t show_demo(struct rtgui_win *win)
{
struct rtgui_dc *dc;
rtgui_rect_t rect;
dc = rtgui_dc_begin_drawing(RTGUI_WIDGET(win));
if (dc == RT_NULL)
{
rt_kprintf("dc is null \n");
return RT_FALSE;
}
rtgui_dc_get_rect(dc, &rect);
/* draw circular */
{
rt_int16_t x, y, r;
x = rect.x2 / 2 / 2;
y = rect.y2 / 2 / 2;
r = x > y ? y : x;
r -= y / 10;
rtgui_dc_draw_circle(dc, x, y, r);
}
/* draw image */
{
rtgui_rect_t draw_rect;
struct rtgui_image *img;
img = rtgui_image_create_from_mem("png", _picture_png, sizeof(_picture_png), RT_TRUE);
if (img != RT_NULL)
{
draw_rect.x1 = rect.x2 / 2 + (rect.x2 / 2 - img->w) / 2;
draw_rect.y1 = (rect.y2 / 2 - img->h) / 2;
draw_rect.x2 = draw_rect.x1 + img->w;
draw_rect.y2 = draw_rect.y1 + img->h;
rtgui_image_blit(img, dc, &draw_rect);
}
}
/* draw text */
{
rtgui_color_t fc;
rtgui_rect_t draw_rect;
char *text_buf = "Hello RT-thread!";
fc = RTGUI_DC_FC(dc);
RTGUI_DC_FC(dc) = RED;
draw_rect.x1 = rect.x2 * 2 / 5;
draw_rect.y1 = rect.y2 * 3 / 4;
draw_rect.x2 = rect.x2;
draw_rect.y2 = rect.y2;
rtgui_dc_draw_text(dc, text_buf, &draw_rect);
RTGUI_DC_FC(dc) = fc;
}
rtgui_dc_end_drawing(dc, RT_TRUE);
return RT_TRUE;
}
rt_bool_t dc_event_handler(struct rtgui_object *object, rtgui_event_t *event)
{
rt_bool_t err;
struct rtgui_win *win = RTGUI_WIN(object);
err = rtgui_win_event_handler(RTGUI_OBJECT(win), event);
if (event->type == RTGUI_EVENT_PAINT)
show_demo(win);
return err;
}
static void rt_gui_demo_entry(void *parameter)
{
struct rtgui_win *main_win;
struct rtgui_app *app;
/* create gui app */
app = rtgui_app_create("gui_demo");
if (app == RT_NULL)
return;
main_win = rtgui_mainwin_create(RT_NULL, "UiWindow", RTGUI_WIN_STYLE_NO_TITLE);
if (main_win == RT_NULL)
{
rtgui_app_destroy(app);
return;
}
rtgui_object_set_event_handler(RTGUI_OBJECT(main_win), dc_event_handler);
rtgui_win_show(main_win, RT_FALSE);
rtgui_app_run(app);
rtgui_win_destroy(main_win);
rtgui_app_destroy(app);
}
int rt_gui_demo_init(void)
{
rt_thread_t tid;
tid = rt_thread_create("mygui",
rt_gui_demo_entry, RT_NULL,
2048, 25, 10);
if (tid != RT_NULL)
rt_thread_startup(tid);
return 0;
}
INIT_APP_EXPORT(rt_gui_demo_init);
#endif /* RT_USING_RTGUI */