Go Excelize API源码解读GetSheetViewOptions与SetPageLayout
目录
- 一、Go-Excelize简介
- 二、 GetSheetViewOptions
- 三、 SetPageLayout
一、Go-Excelize简介
- Excelize 是 Go 语言编写的用于操作 Office Excel 文档基础库,基于 ECMA-376,ISO/IEC 29500 国际标准。
- 可以使用它来读取、写入由 Microsoft Excel™ 2007 及以上版本创建的电子表格文档。
- 支持 XLAM / XLSM / XLSX / XLTM / XLTX 等多种文档格式,高度兼容带有样式、图片(表)、透视表、切片器等复杂组件的文档,并提供流式读写 API,用于处理包含大规模数据的工作簿。
- 可应用于各类报表平台、云计算、边缘计算等系统。使用本类库要求使用的 Go 语言为 1.15 或更高版本。
二、 GetSheetViewOptions
func (f *File) GetSheetViewOptions(sheet string, viewIndex int, opts ...SheetViewOptionPtr) error
根据给定的工作表名称、视图索引和视图参数获取工作表视图属性,viewIndex 可以是负数,如果是这样,则向后计数(-1 代表最后一个视图)。
例子:获取名为 Sheet1 的工作表上最后一个视图的网格线属性设置。
var showGridLines excelize.ShowGridLines err = f.GetSheetViewOptions("Sheet1", -1, &showGridLines)
废话少说,直接上代码:
func (f *File) GetSheetViewOptions(name string, viewIndex int, opts ...SheetViewOptionPtr) error { view, err := f.getSheetView(name, viewIndex) if err != nil { return err } for _, opt := range opts { opt.getSheetViewOption(view) } return nil }
这段代码逻辑是否简单,简单说一下: 先根据工作表视图索引获取工作表视图,然后遍历不定长参数opts。
然后参数opt做主语,工作表视图做参数,然后获取视图的各参数内容。具体实现方法如下:
三、 SetPageLayout
func (f *File) SetPageLayout(sheet string, opts ...PageLayoutOption) error
根据给定的工作表名称和页面布局参数设置工作表的页面布局属性。目前支持设置的页面布局属性:
- 通过 BlackAndWhite 方法设置单色打印 true 或 false,默认值为 false 关闭。
- 通过 FirstPageNumber 方法设置页面起始页码,默认为自动。
- 通过 PageLayoutOrientation 方法设置页面布局方向,默认页面布局方向为“纵向”。下面的表格是 Excelize 中页面布局方向 PageLayoutOrientation 参数的列表:
参数 | 方向 |
---|---|
OrientationPortrait | 纵向 |
OrientationLandscape | 横向 |
通过 PageLayoutPaperSize 方法设置页面纸张大小,默认页面布局大小为“信纸 8½ × 11 英寸”。下面的表格是 Excelize 中页面布局大小和索引 PageLayoutPaperSize 参数的关系对照:
// Index | Paper Size // -------+----------------------------------------------- // 1 | Letter paper (8.5 in. by 11 in.) // 2 | Letter small paper (8.5 in. by 11 in.) // 3 | Tabloid paper (11 in. by 17 in.) // 4 | Ledger paper (17 in. by 11 in.) // 5 | Legal paper (8.5 in. by 14 in.) // 6 | Statement paper (5.5 in. by 8.5 in.) // 7 | Executive paper (7.25 in. by 10.5 in.) // 8 | A3 paper (297 mm by 420 mm) // 9 | A4 paper (210 mm by 297 mm) // 10 | A4 small paper (210 mm by 297 mm) // 11 | A5 paper (148 mm by 210 mm) // 12 | B4 paper (250 mm by 353 mm) // 13 | B5 paper (176 mm by 250 mm) // 14 | Folio paper (8.5 in. by 13 in.) // 15 | Quarto paper (215 mm by 275 mm) // 16 | Standard paper (10 in. by 14 in.) // 17 | Standard paper (11 in. by 17 in.) // 18 | Note paper (8.5 in. by 11 in.) // 19 | #9 envelope (3.875 in. by 8.875 in.) // 20 | #10 envelope (4.125 in. by 9.5 in.) // 21 | #11 envelope (4.5 in. by 10.375 in.) // 22 | #12 envelope (4.75 in. by 11 in.) // 23 | #14 envelope (5 in. by 11.5 in.) // 24 | C paper (17 in. by 22 in.) // 25 | D paper (22 in. by 34 in.) // 26 | E paper (34 in. by 44 in.) // 27 | DL envelope (110 mm by 220 mm) // 28 | C5 envelope (162 mm by 229 mm) // 29 | C3 envelope (324 mm by 458 mm) // 30 | C4 envelope (229 mm by 324 mm) // 31 | C6 envelope (114 mm by 162 mm) // 32 | C65 envelope (114 mm by 229 mm) // 33 | B4 envelope (250 mm by 353 mm) // 34 | B5 envelope (176 mm by 250 mm) // 35 | B6 envelope (176 mm by 125 mm) // 36 | Italy envelope (110 mm by 230 mm) // 37 | Monarch envelope (3.875 in. by 7.5 in.). // 38 | 6 3/4 envelope (3.625 in. by 6.5 in.) // 39 | US standard fanfold (14.875 in. by 11 in.) // 40 | German standard fanfold (8.5 in. by 12 in.) // 41 | German legal fanfold (8.5 in. by 13 in.) // 42 | ISO B4 (250 mm by 353 mm) // 43 | Japanese postcard (100 mm by 148 mm) // 44 | Standard paper (9 in. by 11 in.) // 45 | Standard paper (10 in. by 11 in.) // 46 | Standard paper (15 in. by 11 in.) // 47 | Invite envelope (220 mm by 220 mm) // 50 | Letter extra paper (9.275 in. by 12 in.) // 51 | Legal extra paper (9.275 in. by 15 in.) // 52 | Tabloid extra paper (11.69 in. by 18 in.) // 53 | A4 extra paper (236 mm by 322 mm) // 54 | Letter transverse paper (8.275 in. by 11 in.) // 55 | A4 transverse paper (210 mm by 297 mm) // 56 | Letter extra transverse paper (9.275 in. by 12 in.) // 57 | SuperA/SuperA/A4 paper (227 mm by 356 mm) // 58 | SuperB/SuperB/A3 paper (305 mm by 487 mm) // 59 | Letter plus paper (8.5 in. by 12.69 in.) // 60 | A4 plus paper (210 mm by 330 mm) // 61 | A5 transverse paper (148 mm by 210 mm) // 62 | JIS B5 transverse paper (182 mm by 257 mm) // 63 | A3 extra paper (322 mm by 445 mm) // 64 | A5 extra paper (174 mm by 235 mm) // 65 | ISO B5 extra paper (201 mm by 276 mm) // 66 | A2 paper (420 mm by 594 mm) // 67 | A3 transverse paper (297 mm by 420 mm) // 68 | A3 extra transverse paper (322 mm by 445 mm) // 69 | Japanese Double Postcard (200 mm x 148 mm) // 70 | A6 (105 mm x 148 mm) // 71 | Japanese Envelope Kaku #2 // 72 | Japanese Envelope Kaku #3 // 73 | Japanese Envelope Chou #3 // 74 | Japanese Envelope Chou #4 // 75 | Letter Rotated (11in x 8 1/2 11 in) // 76 | A3 Rotated (420 mm x 297 mm) // 77 | A4 Rotated (297 mm x 210 mm) // 78 | A5 Rotated (210 mm x 148 mm) // 79 | B4 (JIS) Rotated (364 mm x 257 mm) // 80 | B5 (JIS) Rotated (257 mm x 182 mm) // 81 | Japanese Postcard Rotated (148 mm x 100 mm) // 82 | Double Japanese Postcard Rotated (148 mm x 200 mm) // 83 | A6 Rotated (148 mm x 105 mm) // 84 | Japanese Envelope Kaku #2 Rotated // 85 | Japanese Envelope Kaku #3 Rotated // 86 | Japanese Envelope Chou #3 Rotated // 87 | Japanese Envelope Chou #4 Rotated // 88 | B6 (JIS) (128 mm x 182 mm) // 89 | B6 (JIS) Rotated (182 mm x 128 mm) // 90 | (12 in x 11 in) // 91 | Japanese Envelope You #4 // 92 | Japanese Envelope You #4 Rotated // 93 | PRC 16K (146 mm x 215 mm) // 94 | PRC 32K (97 mm x 151 mm) // 95 | PRC 32K(Big) (97 mm x 151 mm) // 96 | PRC Envelope #1 (102 mm x 165 mm) // 97 | PRC Envelope #2 (102 mm x 176 mm) // 98 | PRC Envelope #3 (125 mm x 176 mm) // 99 | PRC Envelope #4 (110 mm x 208 mm) // 100 | PRC Envelope #5 (110 mm x 220 mm) // 101 | PRC Envelope #6 (120 mm x 230 mm) // 102 | PRC Envelope #7 (160 mm x 230 mm) // 103 | PRC Envelope #8 (120 mm x 309 mm) // 104 | PRC Envelope #9 (229 mm x 324 mm) // 105 | PRC Envelope #10 (324 mm x 458 mm) // 106 | PRC 16K Rotated // 107 | PRC 32K Rotated // 108 | PRC 32K(Big) Rotated // 109 | PRC Envelope #1 Rotated (165 mm x 102 mm) // 110 | PRC Envelope #2 Rotated (176 mm x 102 mm) // 111 | PRC Envelope #3 Rotated (176 mm x 125 mm) // 112 | PRC Envelope #4 Rotated (208 mm x 110 mm) // 113 | PRC Envelope #5 Rotated (220 mm x 110 mm) // 114 | PRC Envelope #6 Rotated (230 mm x 120 mm) // 115 | PRC Envelope #7 Rotated (230 mm x 160 mm) // 116 | PRC Envelope #8 Rotated (309 mm x 120 mm) // 117 | PRC Envelope #9 Rotated (324 mm x 229 mm) // 118 | PRC Envelope #10 Rotated (458 mm x 324 mm)
- 通过 FitToHeight 方法设置页面缩放调整页宽,默认值为 1。
- 通过 FitToWidth 方法设置页面缩放调整页高,默认值为 1。
- 通过 PageLayoutScale 方法设置页面缩放比例,取值范围 10 至 400,即缩放 10% 至 400%,默认值为 100 正常尺寸。
- 例如,将名为 Sheet1 的工作表页面布局设置为单色打印、起始页码为 2、横向、使用 A4(小) 210 × 297 毫米纸张、调整为 2 页宽、2 页高并缩放 50%:
f := excelize.NewFile() if err := f.SetPageLayout( "Sheet1", excelize.BlackAndWhite(true), excelize.FirstPageNumber(2), excelize.PageLayoutOrientation(excelize.OrientationLandscape), excelize.PageLayoutPaperSize(10), excelize.FitToHeight(2), excelize.FitToWidth(2), excelize.PageLayoutScale(50), ); err != nil { fmt.Println(err) }
废话少说,直接上源码:
func (f *File) SetPageLayout(sheet string, opts ...PageLayoutOption) error { s, err := f.workSheetReader(sheet) if err != nil { return err } ps := s.PageSetUp if ps == nil { ps = new(xlsxPageSetUp) s.PageSetUp = ps } for _, opt := range opts { opt.setPageLayout(ps) } return err }
先读取工作表,然后获取工作表的PageSetUp。
根据微软文档PageSetup 对象包含作为特性的所有页面设置属性(左边距、下边距、纸张大小等)。
如果这个对象为空,就新建一个xlsxPageSetUp类型的对象:
然后遍历不定长参数opts,就是使用了哪些可选参数。
....
这些都是opt.setPageLayout(ps)
对应的那些函数,每种参数对应一个。
基本逻辑,都是判断要赋的值是否合法,然后直接类型转化知乎赋值给xlsxPageSetUp对象的对应参数。
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