update DC example.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@788 bbd45198-f89e-11dd-88c7-29a3b14d5316

examples/gui/demo_view_benchmark.c

+#include <rtgui/dc.h>
+#include <rtgui/rtgui_system.h>
+#include <rtgui/widgets/view.h>
+#include "demo_view.h"
+
+rt_bool_t benchmark_event_handler(rtgui_widget_t* widget, rtgui_event_t *event)
+{
+	if (event->type == RTGUI_EVENT_PAINT)
+	{
+		struct rtgui_dc* dc;
+		rtgui_rect_t rect;
+
+		/* 因为用的是demo view，上面本身有一部分控件，所以在绘图时先要让demo view先绘图 */
+		rtgui_view_event_handler(widget, event);
+
+		/* 获得控件所属的DC */
+		dc = rtgui_dc_begin_drawing(widget);
+		if (dc == RT_NULL) /* 如果不能正常获得DC，返回（如果控件或父控件是隐藏状态，DC是获取不成功的） */
+			return RT_FALSE;
+
+		/* 获得demo view允许绘图的区域 */
+		demo_view_get_rect(RTGUI_VIEW(widget), &rect);
+
+		/* 擦除所有 */
+		rtgui_dc_fill_rect(dc, &rect);
+
+		/* 绘图 */
+		rtgui_dc_draw_text(dc, "飞线乱飞", &text_rect);
+
+		/* 绘图完成 */
+		rtgui_dc_end_drawing(dc);
+	}
+	else
+	{
+		/* 调用默认的事件处理函数 */
+		return rtgui_view_event_handler(widget, event);
+	}
+
+	return RT_FALSE;
+}
+
+rtgui_view_t *demo_view_benchmark(rtgui_workbench_t* workbench)
+{
+	rtgui_view_t *view;
+
+	view = demo_view(workbench, "绘图测试");
+	if (view != RT_NULL)
+		rtgui_widget_set_event_handler(RTGUI_WIDGET(view), benchmark_event_handler);
+
+	return view;
+}

examples/gui/demo_view_dc.c

@@ -9,6 +9,12 @@
 #include <rtgui/rtgui_system.h>
 #include <rtgui/widgets/label.h>
 #include <rtgui/widgets/slider.h>
+#include <rtgui/image_hdc.h>
+
+#include "play.hdh"
+#include "stop.hdh"
+struct rtgui_image_hdcmm play_image = RTGUI_IMAGE_HDC_DEF(2, 0x1c, 0x16, play_hdh);
+struct rtgui_image_hdcmm stop_image = RTGUI_IMAGE_HDC_DEF(2, 0x1c, 0x16, stop_hdh);
 
 /*
  * view的事件处理函数
@@ -50,6 +56,16 @@ rt_bool_t dc_event_handler(rtgui_widget_t* widget, rtgui_event_t *event)
 		rtgui_dc_draw_text(dc, "RT-Thread/GUI标准版本", &rect);
 #endif
 
+		{
+			rtgui_rect_t rect = {0, 0, 0x1c, 0x16};
+			rtgui_rect_moveto(&rect, 80, 80);
+			rtgui_image_blit((rtgui_image_t*)&play_image, dc, &rect);
+
+			rect.x1 = 0; rect.y1 = 0;
+			rect.x2 = 0x1c; rect.y2 = 0x16;
+			rtgui_rect_moveto(&rect, 130, 80);
+			rtgui_image_blit((rtgui_image_t*)&stop_image, dc, &rect);
+		}
 		/* 绘制一个圆形 */
 		RTGUI_DC_FC(dc) = red;
 		rtgui_dc_draw_circle(dc, rect.x1 + 10, rect.y1 + 10, 10);