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update DC example.

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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@788 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong@gmail.com 2010-07-04 23:59:45 +00:00
parent b25f307b9b
commit acd6097444
2 changed files with 67 additions and 0 deletions
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51
examples/gui/demo_view_benchmark.c Normal file
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@ -0,0 +1,51 @@
#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;
}

16
examples/gui/demo_view_dc.c
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@ -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);