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01 StockGraphics

c#/winform/GDI+

实现功能：

  • 价格柱线图
  • 交易量柱线图
  • 鼠标跟随线
  • 图形跟随鼠标拖拽移动
  • 绘制类似MA折线
  • 显示鼠标所在柱线信息
  • 绘制分析标记
  • 数据切换

性能

  • GDI+绘制效率还不错；
  • 一次读入的价格/交易量/折线/标记数据存储在List中，没有限制数据量；
  • form初始化时根据上述数据生成绘制坐标信息；
  • 绘制坐标 + offset的绘制机制，需绘制数据位置变化实质变动的是offset，无需从价格/交易量重新计算坐标；
  • 在绘制区域内拖动柱线图时，实时计算新出现在绘制区域内的图像坐标；
  • 拖动label/鼠标跟随线位置变动，重绘区域被精确记录，减少重绘次数。

使用方法

  • StockDataSet类

    待绘制的价格/交易量/MA等数据需存放在此。

  • ComputeDrawInfo类

    定义了柱线图的宽度、间隔等

    将数据计算成为坐标

  • DrawBase类

    GDI+实现

    一些画笔画布的定义

    一些计算绘制区域的方法

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