git-svn-id: https://rt-thread.googlecode.com/svn/trunk@920 bbd45198-f89e-11dd-88c7-29a3b14d5316

1 files changed, 150 insertions, 0 deletions

diff --git a/examples/gui/demo_view_instrument_panel.c b/examples/gui/demo_view_instrument_panel.c
new file mode 100644
index 0000000000..bf9144db3e
--- /dev/null
+++ b/examples/gui/demo_view_instrument_panel.c
@@ -0,0 +1,150 @@
+/*
+ * �����嵥��DC������ʾ
+ *
+ * ������ӻ��ڴ�������view�Ͻ���DC��������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���¼���������
+ */
+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;
+	
+	/* ����PAINT�¼����д��� */
+	if (event->type == RTGUI_EVENT_PAINT)
+	{
+		struct rtgui_dc* dc;
+		rtgui_rect_t rect;
+		const int vx[] = {85, 85,  105, 105};
+		const int vy[] = {60, 100, 100, 60}; 
+		const int arrowx[] = {x0+75, x0+75, x0+85};
+		const int arrowy[] = {y0-5,  y0+5,  y0};
+
+		/*
+		 * ��Ϊ�õ���demo view�����汾����һ���ֿؼ��������ڻ�ͼʱ��Ҫ��demo view
+		 * �Ȼ�ͼ
+		 */
+		rtgui_view_event_handler(widget, event);
+
+		/************************************************************************/
+		/* �������DC�IJ���                                                     */
+		/************************************************************************/
+
+		/* ��ÿؼ�������DC */
+		dc = rtgui_dc_begin_drawing(widget);
+		/* ��������������DC�����أ�����ؼ��򸸿ؼ�������״̬��DC�ǻ�ȡ���ɹ��ģ� */
+		if (dc == RT_NULL)
+			return RT_FALSE;
+
+		/* ���demo view������ͼ������ */
+		demo_view_get_rect(RTGUI_VIEW(widget), &rect);
+
+		RTGUI_DC_TEXTALIGN(dc) = RTGUI_ALIGN_BOTTOM | RTGUI_ALIGN_CENTER_HORIZONTAL;
+		/* ��ʾGUI�İ汾��Ϣ */
+#ifdef RTGUI_USING_SMALL_SIZE
+		rtgui_dc_draw_text(dc, "RT-Thread/GUIС�Ͱ汾", &rect);
+#else
+		rtgui_dc_draw_text(dc, "RT-Thread/GUI��׼�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;
+			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;
+			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);
+
+		/* ��ͼ��� */
+		rtgui_dc_end_drawing(dc);
+	}
+	else
+	{
+		/* �����¼�������Ĭ�ϵ��¼��������� */
+		return rtgui_view_event_handler(widget, event);
+	}
+
+	return RT_FALSE;
+}
+
+/* ��������DC������ʾ�õ���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)
+		/* ���ó��Լ����¼��������� */
+		rtgui_widget_set_event_handler(RTGUI_WIDGET(view), instrument_panel_event_handler);
+
+	return view;
+}