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       
(Showing Draft Content)

缩放

SpreadJS允许您执行缩放操作以放大或缩小表单的视口。可以使用以下任意一种方法执行放大操作:

  • Ctrl + 鼠标滚轮
  • 状态栏缩放指示器
  • 两根手指进行缩放操作(仅在触摸设备上)
  • API member sheet.zoom(缩放因子)

单元格大小及其内容将随视口一起放大或缩小。

边框,网格线,冻结线,分割条和选择指示器均不受影响。

通过使用sheet.zoom(zoomFactor),可以将缩放系数设置为0.1到4之间的任何值。默认情况下启用缩放操作。 但是,您可以通过将 options.allowUserZoom 属性设置为false来选择禁用它。

示例代码

This example sets the options.allowUserZoom property.

activeSheet.zoom(3);

设定缩放限制

进行缩放操作时,会触发 ViewZoomingViewZoomed 事件。 这些事件可用于干预缩放过程并应用任何操作,例如设置视口的最小或最大缩放限制。

示例代码

本示例使用 newZoomFactor 参数设置表格视图的最小和最大缩放限制。

// 通过newZoomFactor参数限制缩放动作
// set allowUserZoom to true
spread.options.allowUserZoom = true;
activeSheet.bind(GC.Spread.Sheets.Events.ViewZooming, function (e, info) {
    if (info.newZoomFactor >= 2) {
        info.newZoomFactor = 2; // 最大缩放系数为2
    }
    if (info.newZoomFactor < 1) {
        info.newZoomFactor = 0.5; // 最小缩放系数为0.5
    }
});

本示例通过使用 cancel 参数设置表格视图的最大缩放限制。

//通过取消参数限制缩放动作
//将allowUserZoom设置为true
spread.options.allowUserZoom = true;

activeSheet.bind(GC.Spread.Sheets.Events.ViewZooming, function (e, info) {
    if (info.newZoomFactor >= 2) {
       info.cancel = true; // 取消此缩放动作
    }
});