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

/*
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>嵥<EFBFBD><EFBFBD>DC<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ
 *
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ӻ<EFBFBD><EFBFBD>ڴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>view<EFBFBD>Ͻ<EFBFBD><EFBFBD><EFBFBD>DC<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ
 */

#include "demo_view.h"
#include <rtgui/dc.h>
#include <rtgui/rtgui_system.h>
#include <rtgui/widgets/label.h>
#include <rtgui/widgets/slider.h>
#include <rtgui/image_hdc.h>
#include <math.h>

/*
 * view<EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 */
rt_bool_t instrument_panel_event_handler(rtgui_widget_t* widget, rtgui_event_t *event)
{
	char ac[4];
	int i;
	int x0 = 120;
	int y0 = 170;
	int x, y;
	int default_color;
	
	/* <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;
		const int arrowx[] = {120+75, 120+75, 120+85};
		const int arrowy[] = {170-5,  170+5,  170};

		/*
		 * <EFBFBD><EFBFBD>Ϊ<EFBFBD>õ<EFBFBD><EFBFBD><EFBFBD>demo view<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 view
		 * <EFBFBD>Ȼ<EFBFBD>ͼ
		 */
		rtgui_view_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 view<65><77><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͼ<EFBFBD><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
		demo_view_get_rect(RTGUI_VIEW(widget), &rect);

		RTGUI_DC_TEXTALIGN(dc) = RTGUI_ALIGN_BOTTOM | RTGUI_ALIGN_CENTER_HORIZONTAL;
		/* <20><>ʾGUI<55>İ汾<C4B0><E6B1BE>Ϣ */
#ifdef RTGUI_USING_SMALL_SIZE
		rtgui_dc_draw_text(dc, "RT-Thread/GUIС<49>Ͱ汾", &rect);
#else
		rtgui_dc_draw_text(dc, "RT-Thread/GUI<55><49>׼<EFBFBD>汾", &rect);
#endif


	RTGUI_DC_TEXTALIGN(dc) = RTGUI_ALIGN_CENTER_VERTICAL | RTGUI_ALIGN_CENTER_HORIZONTAL;
	RTGUI_DC_FC(dc) = blue;
	rect.y2 = 270;
	rtgui_dc_draw_text(dc, "rtgui-panel", &rect);

	for(i = 0; i < 6; i++)
	{
		rtgui_dc_draw_arc(dc, x0, y0, 117-i, 150, 30);
	}

	RTGUI_DC_FC(dc) = black;

	RTGUI_DC_TEXTALIGN(dc) = RTGUI_ALIGN_LEFT;
	for(i = 0; i <= 23; i++)
	{
		if(i < 12)
		{
			x = x0 + 105 * cos((150 + i * 10) * 3.1415926 / 180);
			y = y0 + 105 * sin((150 + i * 10) * 3.1415926 / 180);
			rect.x1 = x;
			rect.y1 = y;
			rect.x2 = rect.x1 + 12 * 3;
			rect.y2 = rect.y1 + 12;
			rt_sprintf(ac, "%d", 10 * i);
			rtgui_dc_draw_text(dc, ac, &rect);	
		}
		else
		{
			RTGUI_DC_TEXTALIGN(dc) = RTGUI_ALIGN_RIGHT;
	
			x = x0 + 105 * cos((160 + i * 10) * 3.1415926 / 180);
			y = y0 + 105 * sin((160 + i * 10) * 3.1415926 / 180);

			rect.x1 = x  - 12 * 3;
			rect.y1 = y;
			rect.x2 = rect.x1 + 12 * 3;
			rect.y2 = rect.y1 + 12;
			rt_sprintf(ac, "%d", 10 * i);
			rtgui_dc_draw_text(dc, ac, &rect);
		}

		x = x0 + 107 * cos((150 + i * 10) * 3.1415926 / 180);
		y = y0 + 107 * sin((150 + i * 10) * 3.1415926 / 180);
		rtgui_dc_fill_circle(dc, x, y, 3);
	}
	RTGUI_DC_FC(dc) = RTGUI_RGB(166, 0, 166);
	rtgui_dc_fill_circle(dc, x0, y0, 3);
	RTGUI_DC_FC(dc) = RTGUI_RGB(120, 141, 30);
	rtgui_dc_draw_circle(dc, x0, y0, 5);

	default_color = RTGUI_DC_BC(dc);
	RTGUI_DC_BC(dc) = red;
	rect.x1 = x0 + 7;
	rect.y1 = y0 - 1;
	rect.x2 = x0 + 75;
	rect.y2 = y0 + 1;
	rtgui_dc_fill_rect(dc, &rect);

	RTGUI_DC_BC(dc) = default_color;

	rtgui_dc_fill_polygon(dc, arrowx, arrowy, 3);

		/* <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_view_event_handler(widget, event);
	}

	return RT_FALSE;
}

/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>DC<44><43><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʾ<EFBFBD>õ<EFBFBD><C3B5><EFBFBD>ͼ */
rtgui_view_t *demo_view_instrument_panel(rtgui_workbench_t* workbench)
{
	rtgui_view_t *view;

	view = demo_view(workbench, "instrument panel Demo");
	if (view != RT_NULL)
		/* <20><><EFBFBD>ó<EFBFBD><C3B3>Լ<EFBFBD><D4BC><EFBFBD><EFBFBD>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
		rtgui_widget_set_event_handler(RTGUI_WIDGET(view), instrument_panel_event_handler);

	return view;
}