81 lines
2.0 KiB
C
81 lines
2.0 KiB
C
#include <rtgui/dc.h>
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#include <rtgui/dc_hw.h>
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#include <rtgui/rtgui_system.h>
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#include <rtgui/widgets/view.h>
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#include "demo_view.h"
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#define RAND(x1, x2) ((rand() % (x2 - x1)) + x1)
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static rtgui_view_t* view = RT_NULL;
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void _onidle(rtgui_widget_t* widget, rtgui_event_t *event)
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{
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rtgui_color_t color;
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rtgui_rect_t rect, draw_rect;
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struct rtgui_dc *dc;
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/* 获得控件所属的DC */
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// dc = rtgui_dc_hw_create(RTGUI_WIDGET(view));
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dc = rtgui_dc_begin_drawing(RTGUI_WIDGET(view));
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if (dc == RT_NULL) return ;
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demo_view_get_rect(RTGUI_VIEW(view), &rect);
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draw_rect.x1 = RAND(rect.x1, rect.x2);
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draw_rect.y1 = RAND(rect.y1, rect.y2);
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draw_rect.x2 = RAND(draw_rect.x1, rect.x2);
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draw_rect.y2 = RAND(draw_rect.y1, rect.y2);
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color = RTGUI_RGB(rand() % 255, rand() % 255, rand() % 255);
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RTGUI_WIDGET_BACKGROUND(RTGUI_WIDGET(view)) = color;
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rtgui_dc_fill_rect(dc, &draw_rect);
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/* 绘图完成 */
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rtgui_dc_end_drawing(dc);
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}
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rt_bool_t benchmark_event_handler(rtgui_widget_t* widget, rtgui_event_t *event)
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{
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if (event->type == RTGUI_EVENT_PAINT)
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{
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struct rtgui_dc* dc;
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rtgui_rect_t rect;
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/* 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 */
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rtgui_view_event_handler(widget, event);
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/* 获得控件所属的DC */
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dc = rtgui_dc_begin_drawing(widget);
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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） */
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return RT_FALSE;
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/* 获得demo view允许绘图的区域 */
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demo_view_get_rect(RTGUI_VIEW(widget), &rect);
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/* 擦除所有 */
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rtgui_dc_fill_rect(dc, &rect);
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/* 绘图完成 */
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rtgui_dc_end_drawing(dc);
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}
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else
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{
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/* 调用默认的事件处理函数 */
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return rtgui_view_event_handler(widget, event);
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}
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return RT_FALSE;
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}
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rtgui_view_t *demo_view_benchmark(rtgui_workbench_t* workbench)
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{
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// rtgui_view_t *view;
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srand(100);
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view = demo_view(workbench, "绘图测试");
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rtgui_widget_set_event_handler(RTGUI_WIDGET(view), benchmark_event_handler);
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rtgui_thread_set_onidle(_onidle);
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return view;
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}
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