目录

运行情况：

代码：

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承接 【python_PyQt5开发验证K线视觉想法工具V1.0】 博文

https://blog.csdn.net/m0_37967652/article/details/131966298

运行情况：

 添加线段数据在K线图中用线段绘制出来

代码：

1 线段标记的数据格式：

[[[x0,y0],[x1,y1]],[[x0,y0],[x1,y1]],...]

[x0,y0]和[x1,y1]是线段两个端点的坐标

2 在 Graph_Widget类中 add_marks 方法修改为

    def add_marks(self,data:List):# 点，曲线，区间# '标题','规则','形状','颜色','数据'self.del_marks()for row in data:try:rule_str = row[1]shape_str = row[2]color_str = row[3]data_str = row[4]data_json = json.loads(data_str)if rule_str == '点':for node in data_json:targetItem = pg.TargetItem(pos=node,size=20,symbol=self.pointshape_map[shape_str],pen=color_str,brush=color_str,movable=False)self.pw.addItem(targetItem)self.add_items_list.append(targetItem)passif rule_str == '线段':for node in data_json:targetItem = pg.LineSegmentROI(positions=(node[0],node[1]),pen={'color':color_str,'width':2},movable=False)self.pw.addItem(targetItem)self.add_items_list.append(targetItem)passpassif rule_str == '连线':for node in data_json:targetItem = pg.PlotCurveItem(x=node[0],y=node[1],pen=color_str,symbol=self.pointshape_map[shape_str])self.pw.addItem(targetItem)self.add_items_list.append(targetItem)passpassif rule_str == '区间':for node in data_json:targetItem = pg.LinearRegionItem(values=node,pen=color_str,movable=False)self.pw.addItem(targetItem)self.add_items_list.append(targetItem)passpassexcept Exception as e:print(e)continuepasspass

3 在SettingMarksWidget 类中

init_data 方法

    def init_data(self):self.please_select_str: str = '-- 请选择 --'self.rule_map: Dict = {'点':'数据格式提示:[[x,y],[x,y],...]','线段':'[[(x0,y0),(x1,y1)],[(x0,y0),(x1,y1)],...]','连线':'数据格式提示:[[x_list,y_list],...]','区间':'数据格式提示:[[x0,x1],[x0,x1],...]'}self.no_pointshape_rules_list: List = ['线段','区间']self.pointshape_map: Dict = {'圆':'o','三角形':'t','星形':'star','正方形':'s','菱形':'d','加号':'+','向下箭头':'arrow_down','向左箭头':'arrow_left','向上箭头':'arrow_up','向右箭头':'arrow_right'}pass

rule_combox_currentTextChanged 方法

    def rule_combox_currentTextChanged(self,txt:str):cur_txt = self.rule_combox.currentText()if not cur_txt or cur_txt == self.please_select_str:self.rule_label.setText('')returnself.rule_label.setText(self.rule_map[cur_txt])if cur_txt in self.no_pointshape_rules_list:self.pointshape_combox.setCurrentText(self.please_select_str)self.pointshape_combox.setDisabled(True)else:self.pointshape_combox.setDisabled(False)pass