RT-Thread-如何强制window窗口先隐藏RT-Thread问答社区

如何强制window窗口先隐藏

发布于 2011-05-29 23:18:39 浏览：6483 订阅该版

用STM32调试GUI程序，发现刷屏有闪烁现象。跟踪进去发现，如果一个view 1打开了2个window,那么试图通过单击按钮隐藏Window，同时显示其他的view 2时，就会有闪烁现实(主频高的CPU察觉不到比如S3C2440,处理快嘛)。主要是因为程序先执行显示view 2,再在view 2上剪切第一个window,然后又再一次剪切第二个window. 
我想有什么好办法能先强制window 先被剪切隐藏。在显示view 2啊。
也就是第一步先在view 1 剪切第一个window,然后又再剪切第二个window,最后显示view 2.
看代码，主要是rtgui_win_hiden这个函数没有马上剪切绘图，它只是发个剪切的消息给mq.
但是rtgui_view_show 确是马上绘制view的图像了。
测试代码如下，主要修改一下demo_view_window. 要看3次刷屏的慢动作，可以在STM32 LCD的画线函数里，加入延时代码
if(debug_gui_delay)
	{/* 这里增加了一段延时 */
		rt_uint32_t i=100000;
		while(i--);
	}
```/*
 * 程序清单：窗口演示
 *
 * 这个例子会先创建出一个演示用的view，当点击上面的按钮时会不同的模式创建窗口
 */

#include <rtgui/rtgui.h>
#include <rtgui/rtgui_system.h>
#include <rtgui/widgets/window.h>
#include <rtgui/widgets/label.h>
#include <rtgui/widgets/button.h>
#include "demo_view.h"
#include <string.h>

static struct rtgui_timer *timer;
static struct rtgui_label* label;
static struct rtgui_win* msgbox = RT_NULL;
static char label_text[80];
static rt_uint8_t cnt = 5;
rtgui_win_t *win1;
rtgui_win_t *win2;

/* 获取一个递增的窗口标题 */
static char* get_win_title()
{
	static rt_uint8_t win_no = 0;
	static char win_title[16];

rt_sprintf(win_title, "窗口 %d", ++win_no);
	return win_title;
}

/* 窗口关闭时的事件处理 */
void window_demo_close(struct rtgui_widget* widget, rtgui_event_t *even)
{
	rtgui_win_t* win;

/* 获得最顶层控件 */
	win = RTGUI_WIN(rtgui_widget_get_toplevel(widget));

/* 销毁窗口 */
	rtgui_win_destroy(win);
}

static rt_uint16_t delta_x = 20;
static rt_uint16_t delta_y = 40;

/* 触发正常窗口显示 */
static void demo_win_onbutton(struct rtgui_widget* widget, rtgui_event_t* event)
{
	//rtgui_win_t *win;
	rtgui_label_t *label;
	rtgui_toplevel_t *parent;
	rtgui_rect_t rect = {0, 0, 100, 80};
	rtgui_rect_t rect1 = {0, 0, 100, 80};

parent = RTGUI_TOPLEVEL(rtgui_widget_get_toplevel(widget));
	rtgui_rect_moveto(&rect, delta_x, delta_y);
	delta_x = 110;
	delta_y = 90;

/* 创建一个窗口 */
	win1 = rtgui_win_create(parent,
		get_win_title(), &rect, RTGUI_WIN_STYLE_DEFAULT);

rect.x1 += 10;
	rect.x2 -= 5;
	rect.y1 += 5;
	rect.y2 = rect.y1 + 20;

/* 添加一个文本标签 */
	label = rtgui_label_create("普通窗口1");
	rtgui_widget_set_rect(RTGUI_WIDGET(label), &rect);
	rtgui_container_add_child(RTGUI_CONTAINER(win1), RTGUI_WIDGET(label));

/* 非模态显示窗口 */
	rtgui_win_show(win1, RT_FALSE);

parent = RTGUI_TOPLEVEL(rtgui_widget_get_toplevel(widget));
	rtgui_rect_moveto(&rect1, delta_x, delta_y);

/* 创建一个窗口 */
	win2 = rtgui_win_create(parent,
		get_win_title(), &rect1, RTGUI_WIN_STYLE_DEFAULT);

rect1.y1 = rect.y2 + 80;
	rect1.y2 = rect.y1 + 20;

/* 添加一个文本标签 */
	label = rtgui_label_create("普通窗口2");
	rtgui_widget_set_rect(RTGUI_WIDGET(label), &rect1);
	rtgui_container_add_child(RTGUI_CONTAINER(win2), RTGUI_WIDGET(label));

/* 非模态显示窗口 */
	rtgui_win_show(win2, RT_FALSE);
}

/* 触发无标题窗口显示 */
static void demo_ntitlewin_onbutton(struct rtgui_widget* widget, rtgui_event_t* event)
{
	rtgui_win_end_modal(win1, RTGUI_MODAL_CANCEL);
	rtgui_win_hiden(win1);

rtgui_win_end_modal(win2, RTGUI_MODAL_CANCEL);
	rtgui_win_hiden(win2);

demo_view_next(widget,event);
}

rtgui_view_t* demo_view_window(rtgui_workbench_t* workbench)
{
	rtgui_rect_t  rect;
	rtgui_view_t* view;
	rtgui_button_t *button;

/* 创建一个演示用的视图 */
	view = demo_view(workbench, "Window Demo");

demo_view_get_rect(view, &rect);
	rect.x1 += 5;
	rect.x2 = rect.x1 + 100;
	rect.y1 += 5;
	rect.y2 = rect.y1 + 20;
	/* 创建按钮用于显示正常窗口 */
	button = rtgui_button_create("打开2个窗口");
	rtgui_widget_set_rect(RTGUI_WIDGET(button), &rect);
	rtgui_container_add_child(RTGUI_CONTAINER(view), RTGUI_WIDGET(button));
	/* 设置onbutton为demo_win_onbutton函数 */
	rtgui_button_set_onbutton(button, demo_win_onbutton);

demo_view_get_rect(view, &rect);
	rect.x1 += 5;
	rect.x2 = rect.x1 + 100;
	rect.y1 += 5 + 25 + 25 + 25;
	rect.y2 = rect.y1 + 20;
	/* 创建按钮用于触发一个不包含标题的窗口 */
	button = rtgui_button_create("下一个View");
	rtgui_widget_set_rect(RTGUI_WIDGET(button), &rect);
	rtgui_container_add_child(RTGUI_CONTAINER(view), RTGUI_WIDGET(button));
	/* 设置onbutton为demo_ntitlewin_onbutton函数 */
	rtgui_button_set_onbutton(button, demo_ntitlewin_onbutton);

return view;
}
```