add ttf and xml example.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@757 bbd45198-f89e-11dd-88c7-29a3b14d5316

add ttf and xml example.
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@757 bbd45198-f89e-11dd-88c7-29a3b14d5316
d4150036 · bernard.xiong · 3a13964e · d4150036 · d4150036 · d4150036
Showing with 127 addition and 0 deletion

examples/gui/demo_view_ttf.c examples/gui/demo_view_ttf.c +98 -0

examples/gui/demo_workbench.c examples/gui/demo_workbench.c +3 -0

examples/gui/demo_xml.c examples/gui/demo_xml.c +26 -0

未找到文件。
--- a/examples/gui/demo_view_ttf.c
+++ b/examples/gui/demo_view_ttf.c
+/*
+ * 程序清单：TTF字体显示演示
+ *
+ * 这个例子会在创建出的view上进行TTF字体显示的演示
+ */
+
+#include "demo_view.h"
+#include <rtgui/dc.h>
+#include <rtgui/font.h>
+#include <rtgui/rtgui_system.h>
+
+#ifdef RTGUI_USING_TTF
+static 	rtgui_font_t *font_16, *font_24, *font_36, *font_48;
+
+/*
+ * view的事件处理函数
+ */
+rt_bool_t ttf_event_handler(rtgui_widget_t* widget, rtgui_event_t *event)
+{
+	/* 仅对PAINT事件进行处理 */
+	if (event->type == RTGUI_EVENT_PAINT)
+	{
+		struct rtgui_dc* dc;
+		rtgui_rect_t rect;
+		rtgui_font_t* saved;
+
+		/*
+		 * 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);
+
+		/************************************************************************/
+		/* 下面的是DC的操作                                                     */
+		/************************************************************************/
+
+		/* 获得控件所属的DC */
+		dc = rtgui_dc_begin_drawing(widget);
+		/* 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） */
+		if (dc == RT_NULL)
+			return RT_FALSE;
+
+		/* 获得demo view允许绘图的区域 */
+		demo_view_get_rect(RTGUI_VIEW(widget), &rect);
+
+		saved = RTGUI_WIDGET_FONT(widget);
+
+		RTGUI_WIDGET_FONT(widget) = font_16;
+		rtgui_dc_draw_text(dc, "ABCD", &rect);
+		rect.y1 += 18; 
+
+		RTGUI_WIDGET_FONT(widget) = font_24;
+		rtgui_dc_draw_text(dc, "ABCD", &rect);
+		rect.y1 += 26; 
+
+		RTGUI_WIDGET_FONT(widget) = font_36;
+		rtgui_dc_draw_text(dc, "ABCD", &rect);
+		rect.y1 += 38; 
+
+		RTGUI_WIDGET_FONT(widget) = font_48;
+		rtgui_dc_draw_text(dc, "ABCD", &rect);
+
+		RTGUI_WIDGET_FONT(widget) = saved;
+		/* 绘图完成 */
+		rtgui_dc_end_drawing(dc);
+	}
+	else
+	{
+		/* 其他事件，调用默认的事件处理函数 */
+		return rtgui_view_event_handler(widget, event);
+	}
+
+	return RT_FALSE;
+}
+
+extern rtgui_font_t* rtgui_freetype_font_create(const char* filename, int bold, int italic, rt_size_t size);
+
+/* 创建用于TTF字体显示演示用的视图 */
+rtgui_view_t *demo_view_ttf(rtgui_workbench_t* workbench)
+{
+	rtgui_view_t *view;
+
+	font_16 = rtgui_freetype_font_create("d:/arial.ttf", 0, 0, 16);
+	font_24 = rtgui_freetype_font_create("d:/arial.ttf", 0, 0, 24);
+	font_36 = rtgui_freetype_font_create("d:/arial.ttf", 0, 0, 36);
+	font_48 = rtgui_freetype_font_create("d:/HARNGTON.TTF", 0, 0, 72);
+
+	view = demo_view(workbench, "TTF 演示");
+	if (view != RT_NULL)
+	{
+		// RTGUI_WIDGET_BACKGROUND(RTGUI_WIDGET(view)) = white;
+		/* 设置成自己的事件处理函数 */
+		rtgui_widget_set_event_handler(RTGUI_WIDGET(view), ttf_event_handler);
+	}
+
+	return view;
+}
+#endif
--- a/examples/gui/demo_workbench.c
+++ b/examples/gui/demo_workbench.c
@@ -52,6 +52,9 @@ static void workbench_entry(void* parameter)

 	/* 初始化各个例子的视图 */
 	demo_view_dc(workbench);
+#ifdef RTGUI_USING_TTF
+	demo_view_ttf(workbench);
+#endif
 	demo_view_dc_buffer(workbench);
 	demo_view_animation(workbench);
 	demo_view_buffer_animation(workbench);

--- a/examples/gui/demo_xml.c
+++ b/examples/gui/demo_xml.c
+#include <rtthread.h>
+
+#include <rtgui/rtgui_xml.h>
+
+static int xml_event_handler(rt_uint8_t event, const char* text, rt_size_t len, void* user)
+{
+	rt_kprintf("%s: %s\n", rtgui_xml_event_str(event), text);
+	return 1;
+}
+
+const char xml_str[] = "<?xml version=\"1.0\"?><note><to>Tove</to><from>Jani</from><heading>Reminder</heading><body>Don't forget me this weekend!</body></note>";
+void demo_xml()
+{
+	rtgui_xml_t *xml;
+
+	xml = rtgui_xml_create(512, xml_event_handler, RT_NULL);
+	if (xml != RT_NULL)
+	{
+		rtgui_xml_parse(xml, xml_str, sizeof(xml_str));
+		rtgui_xml_destroy(xml);
+	}
+}
+#ifdef RT_USING_FINSH
+#include <finsh.h>
+FINSH_FUNCTION_EXPORT(demo_xml, show the demo of xml parser);
+#endif