add animation demo.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@378 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong 2010-02-06 15:45:42 +00:00
parent ce9eba9e53
commit 36343a5618
2 changed files with 119 additions and 1 deletions

View File

@ -0,0 +1,113 @@
#include <rtgui/rtgui.h>
#include <rtgui/dc.h>
#include <rtgui/rtgui_system.h>
#include <rtgui/widgets/view.h>
/*
* DC上绘图以实现动画效果
*
*
* "飞线乱飞"
*/
static rt_int8_t dx = 1, dy = 1;
static rtgui_rect_t text_rect;
static rtgui_timer_t *timer;
void timeout(struct rtgui_timer* timer, void* parameter)
{
struct rtgui_dc* dc;
rtgui_rect_t rect;
rtgui_widget_t *widget;
/**/
widget = (rtgui_widget_t*)parameter;
/* 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 ;
/* 获得demo view允许绘图的区域主要用于判断边界 */
demo_view_get_rect(RTGUI_VIEW(widget), &rect);
rect.y2 -= 5;
/* 判断是否是第一次绘图 */
if ((text_rect.x1 == 0) && (text_rect.y1 == 0))
{
rtgui_rect_moveto(&text_rect, rect.x1, rect.y1);
}
else
{
/* 擦除老的文字 */
rtgui_dc_fill_rect(dc, &text_rect);
}
/* 设置dx和dy */
if (text_rect.x2 >= rect.x2) dx = -1;
if (text_rect.x1 < rect.x1) dx = 1;
if (text_rect.y2 >= rect.y2) dy = -1;
if (text_rect.y1 < rect.y1) dy = 1;
/* 移动文本框的位置 */
text_rect.x1 += dx; text_rect.x2 += dx;
text_rect.y1 += dy; text_rect.y2 += dy;
/* 绘图 */
rtgui_dc_draw_text(dc, "飞线乱飞", &text_rect);
/* 绘图完成 */
rtgui_dc_end_drawing(dc);
}
rt_bool_t animation_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_animation(rtgui_workbench_t* workbench)
{
rtgui_view_t *view;
view = demo_view(workbench, "DC 动画");
if (view != RT_NULL)
rtgui_widget_set_event_handler(RTGUI_WIDGET(view), animation_event_handler);
rtgui_font_get_metrics(RTGUI_WIDGET_FONT(RTGUI_WIDGET(view)), "飞线乱飞", &text_rect);
/* 启动定时器以触发动画 */
timer = rtgui_timer_create(2, RT_TIMER_FLAG_PERIODIC, timeout, (void*)view);
rtgui_timer_start(timer);
return view;
}

View File

@ -37,7 +37,11 @@ static void workbench_entry(void* parameter)
struct rtgui_workbench* workbench;
/* 创建GUI应用需要的消息队列 */
mq = rt_mq_create("workbench", 256, 4, RT_IPC_FLAG_FIFO);
#ifdef RTGUI_USING_SMALL_SIZE
mq = rt_mq_create("workbench", 64, 8, RT_IPC_FLAG_FIFO);
#else
mq = rt_mq_create("workbench", 256, 8, RT_IPC_FLAG_FIFO);
#endif
/* 注册当前线程为GUI线程 */
rtgui_thread_register(rt_thread_self(), mq);
@ -49,6 +53,7 @@ static void workbench_entry(void* parameter)
/* 初始化各个例子的视图 */
demo_view_dc(workbench);
demo_view_animation(workbench);
demo_view_window(workbench);
demo_view_label(workbench);
demo_view_button(workbench);