add scrollbar example.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@831 bbd45198-f89e-11dd-88c7-29a3b14d5316

examples/gui/demo_view_scrollbar.c

+#include "demo_view.h"
+#include <rtgui/rtgui_system.h>
+#include <rtgui/widgets/label.h>
+#include <rtgui/widgets/scrollbar.h>
+
+static rtgui_scrollbar_t* hbar;
+static rtgui_scrollbar_t* vbar;
+
+rtgui_view_t *demo_view_scrollbar(rtgui_workbench_t* workbench)
+{
+	rtgui_view_t *view;
+	rtgui_rect_t rect;
+	rtgui_label_t *label;
+	
+	/* create a demo view */
+	view = demo_view(workbench, "ScrollBar View");
+	
+	/* get demo view rect */
+	demo_view_get_rect(view, &rect);
+	label = rtgui_label_create("horizontal bar:");
+	rtgui_container_add_child(RTGUI_CONTAINER(view), RTGUI_WIDGET(label));
+	rect.x1 += 5; rect.x2 -= 5;
+	rect.y1 += 5; rect.y2 = rect.y1 + 18;
+	rtgui_widget_set_rect(RTGUI_WIDGET(label), &rect);
+	rect.y1 += 20; rect.y2 = rect.y1 + 18;
+	hbar = rtgui_scrollbar_create(RTGUI_HORIZONTAL, &rect);
+	rtgui_container_add_child(RTGUI_CONTAINER(view), RTGUI_WIDGET(hbar));
+
+	/* get demo view rect */
+	demo_view_get_rect(view, &rect);
+	label = rtgui_label_create("vertical bar:");
+	rtgui_container_add_child(RTGUI_CONTAINER(view), RTGUI_WIDGET(label));
+	rect.x1 += 5; rect.x2 -= 5;
+	rect.y1 += 45; rect.y2 = rect.y1 + 18;
+	rtgui_widget_set_rect(RTGUI_WIDGET(label), &rect);
+	rect.x1 += 110; rect.x2 = rect.x1 + 20;
+	rect.y1 += 18 + 5; rect.y2 = rect.y1 + 150;
+	vbar = rtgui_scrollbar_create(RTGUI_VERTICAL, &rect);
+	rtgui_container_add_child(RTGUI_CONTAINER(view), RTGUI_WIDGET(vbar));
+
+	return view;
+}

examples/gui/demo_workbench.c

@@ -63,6 +63,7 @@ static void workbench_entry(void* parameter)
 	demo_view_button(workbench);
 	demo_view_checkbox(workbench);
 	demo_view_progressbar(workbench);
+	demo_view_scrollbar(workbench);
 	demo_view_radiobox(workbench);
 	demo_view_textbox(workbench);
 	demo_view_listbox(workbench);