/* * 程序清单:DC操作演示 * * 这个例子会在创建出的view上进行DC操作的演示 */ #include "demo_view.h" #include #include #include #include #include #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 */ rt_bool_t dc_event_handler(struct rtgui_object* object, rtgui_event_t *event) { struct rtgui_widget *widget = RTGUI_WIDGET(object); /* 仅对PAINT事件进行处理 */ if (event->type == RTGUI_EVENT_PAINT) { struct rtgui_dc* dc; rtgui_rect_t rect; const int vx[] = {20, 50, 60, 45, 60, 20}; const int vy[] = {150, 50, 90, 60, 45, 50}; /* * 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_container_event_handler(RTGUI_OBJECT(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_logic_rect(RTGUI_CONTAINER(widget), &rect); RTGUI_DC_TEXTALIGN(dc) = RTGUI_ALIGN_BOTTOM | RTGUI_ALIGN_CENTER_HORIZONTAL; /* 显示GUI的版本信息 */ #ifdef RTGUI_USING_SMALL_SIZE rtgui_dc_draw_text(dc, "RT-Thread/GUI小型版本", &rect); #else 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); /* 填充一个圆形 */ RTGUI_DC_FC(dc) = green; rtgui_dc_fill_circle(dc, rect.x1 + 30, rect.y1 + 10, 10); #if 0 /* 画一个圆角矩形 */ rect.x1 = 150; rect.y1 = 180; rect.x2 = 210; rect.y2 = 260; RTGUI_DC_FC(dc) = RTGUI_RGB(25, 70, 150); rtgui_dc_draw_round_rect(dc, &rect, 10); rect.x1 = 160; rect.y1 = 190; rect.x2 = 200; rect.y2 = 250; RTGUI_DC_FC(dc) = RTGUI_RGB(170, 7, 80); rtgui_dc_fill_round_rect(dc, &rect, 7); /* 画一个圆弧 */ RTGUI_DC_FC(dc) = RTGUI_RGB(250, 120, 120); rtgui_dc_draw_arc(dc, rect.x1 + 120, rect.y1 + 60, 30, 0, 120); /* 画一个扇形圆环 */ RTGUI_DC_FC(dc) = RTGUI_RGB(150, 23, 100); rtgui_dc_draw_annulus(dc, 180, 170, 30, 50, 210, 330); /* 多边形 */ RTGUI_DC_FC(dc) = blue; rtgui_dc_draw_polygon(dc, vx, vy, 6); #endif RTGUI_DC_FC(dc) = blue; /* 绘制不同的边框 */ { rtgui_rect_t rect = {0, 0, 16, 16}; rtgui_rect_moveto(&rect, 30, 120); rtgui_dc_draw_border(dc, &rect, RTGUI_BORDER_RAISE); rect.x1 += 20; rect.x2 += 20 + 50; rtgui_dc_draw_text(dc, "raise", &rect); rect.x1 -= 20; rect.x2 -= 20 + 50; rect.y1 += 20; rect.y2 += 20; rtgui_dc_draw_border(dc, &rect, RTGUI_BORDER_SIMPLE); rect.x1 += 20; rect.x2 += 20 + 50; rtgui_dc_draw_text(dc, "simple", &rect); rect.x1 -= 20; rect.x2 -= 20 + 50; rect.y1 += 20; rect.y2 += 20; rtgui_dc_draw_border(dc, &rect, RTGUI_BORDER_SUNKEN); rect.x1 += 20; rect.x2 += 20 + 50; rtgui_dc_draw_text(dc, "sunken", &rect); rect.x1 -= 20; rect.x2 -= 20 + 50; rect.y1 += 20; rect.y2 += 20; rtgui_dc_draw_border(dc, &rect, RTGUI_BORDER_BOX); rect.x1 += 20; rect.x2 += 20 + 50; rtgui_dc_draw_text(dc, "box", &rect); rect.x1 -= 20; rect.x2 -= 20 + 50; rect.y1 += 20; rect.y2 += 20; rtgui_dc_draw_border(dc, &rect, RTGUI_BORDER_STATIC); rect.x1 += 20; rect.x2 += 20 + 50; rtgui_dc_draw_text(dc, "static", &rect); rect.x1 -= 20; rect.x2 -= 20 + 50; rect.y1 += 20; rect.y2 += 20; rtgui_dc_draw_border(dc, &rect, RTGUI_BORDER_EXTRA); rect.x1 += 20; rect.x2 += 20 + 50; rtgui_dc_draw_text(dc, "extera", &rect); rect.x1 -= 20; rect.x2 -= 20 + 50; rect.y1 += 20; rect.y2 += 20; } /* 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_container_event_handler(object, event); } return RT_FALSE; } /* 创建用于DC操作演示用的视图 */ rtgui_container_t *demo_view_dc(void) { rtgui_container_t *view; view = demo_view("DC Demo"); if (view != RT_NULL) /* 设置成自己的事件处理函数 */ rtgui_object_set_event_handler(RTGUI_OBJECT(view), dc_event_handler); return view; }