excel_reader 2.0.2 

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198

use anyhow::bail;
use quick_xml::events::{BytesStart, Event};
use std::io::Read;

use crate::{
    excel::XmlReader, helper::string_to_float, raw::spreadsheet::stylesheet::color::XlsxColor,
};

/// https://learn.microsoft.com/en-us/dotnet/api/documentformat.openxml.spreadsheet.gradientfill?view=openxml-3.0.1
///
/// Example:
/// ```
/// <fill>
///     <gradientFill degree="90">
///         <stop position="0">
///             <color rgb="FF92D050"/>
///         </stop>
///         <stop position="1">
///             <color rgb="FF0070C0"/>
///         </stop>
///     </gradientFill>
/// </fill>
/// <fill>
///     <gradientFill type="path" left="0.2" right="0.8" top="0.2" bottom="0.8">
///         <stop position="0">
///             <color theme="0"/>
///         </stop>
///         <stop position="1">
///             <color theme="4"/>
///         </stop>
///     </gradientFill>
/// </fill>
/// ```
#[derive(Debug, Clone, PartialEq)]
pub struct XlsxGradientFill {
    // attributes
    /// values ranging from 0 to 1.
    /// Specifies the position of the bottom edge of the inner rectangle
    /// For bottom, 0 means the bottom edge of the inner rectangle is on the top edge of the cell, and 1 means it is on the bottom edge of the cell. (applies to From Corner and From Center gradients).
    pub bottom: Option<f64>,

    /// values ranging from 0 to 1.
    /// Specifies the position of the left edge of the inner rectangle
    /// For left, 0 means the left edge of the inner rectangle is on the left edge of the cell, and 1 means it is on the right edge of the cell. (applies to From Corner and From Center gradients).
    pub left: Option<f64>,

    /// values ranging from 0 to 1.
    /// Specifies the position of the right edge of the inner rectangle
    /// For right, 0 means the right edge of the inner rectangle is on the left edge of the cell, and 1 means it is on the right edge of the cell. (applies to From Corner and From Center gradients).
    pub right: Option<f64>,

    /// values ranging from 0 to 1.
    /// Specifies the position of the top edge of the inner rectangle
    /// For top, 0 means the top edge of the inner rectangle is on the top edge of the cell, and 1 means it is on the bottom edge of the cell. (applies to From Corner and From Center gradients).
    pub top: Option<f64>,

    /// Angle of the linear gradient
    pub degree: Option<f64>,

    /// Type of gradient fill.
    /// Allowed value: linear, path
    /// https://learn.microsoft.com/en-us/dotnet/api/documentformat.openxml.spreadsheet.gradientvalues?view=openxml-3.0.1
    pub r#type: Option<String>,

    // children
    pub stop: Option<Vec<XlsxGradientStop>>,
}

impl XlsxGradientFill {
    pub(crate) fn load(reader: &mut XmlReader<impl Read>, e: &BytesStart) -> anyhow::Result<Self> {
        let attributes = e.attributes();
        let mut fill = Self {
            bottom: None,
            left: None,
            right: None,
            top: None,
            degree: None,
            r#type: None,
            stop: None,
        };
        let mut stops: Vec<XlsxGradientStop> = vec![];

        for a in attributes {
            match a {
                Ok(a) => {
                    let string_value = String::from_utf8(a.value.to_vec())?;
                    match a.key.local_name().as_ref() {
                        b"bottom" => {
                            fill.bottom = string_to_float(&string_value);
                        }
                        b"left" => {
                            fill.left = string_to_float(&string_value);
                        }
                        b"right" => {
                            fill.right = string_to_float(&string_value);
                        }
                        b"top" => {
                            fill.top = string_to_float(&string_value);
                        }
                        b"degree" => {
                            fill.degree = string_to_float(&string_value);
                        }
                        b"type" => {
                            fill.r#type = Some(string_value);
                        }
                        _ => {}
                    }
                }
                Err(error) => {
                    bail!(error.to_string())
                }
            }
        }

        let mut buf = Vec::new();

        loop {
            buf.clear();

            match reader.read_event_into(&mut buf) {
                Ok(Event::Start(ref e)) if e.local_name().as_ref() == b"stop" => {
                    let stop = XlsxGradientStop::load(reader, e)?;
                    stops.push(stop);
                }
                Ok(Event::End(ref e)) if e.local_name().as_ref() == b"gradientFill" => break,
                Ok(Event::Eof) => bail!("unexpected end of file."),
                Err(e) => bail!(e.to_string()),
                _ => (),
            }
        }

        fill.stop = Some(stops);

        Ok(fill)
    }
}

/// https://learn.microsoft.com/en-us/dotnet/api/documentformat.openxml.spreadsheet.gradientstop?view=openxml-3.0.1
#[derive(Debug, Clone, PartialEq)]
pub struct XlsxGradientStop {
    // attributes
    /// Position information for this gradient stop
    ///
    /// Interpreted exactly like gradientFill left, right, bottom, top.
    /// The position indicated here indicates the point where the color is pure.
    /// Before and and after this position the color can be in transition (or pure, depending on if this is the last stop or not).
    pub position: Option<f64>,

    // children
    pub color: Option<XlsxColor>,
}

impl XlsxGradientStop {
    pub fn load(reader: &mut XmlReader<impl Read>, e: &BytesStart) -> anyhow::Result<Self> {
        let attributes = e.attributes();
        let mut stop = Self {
            position: None,
            color: None,
        };

        for a in attributes {
            match a {
                Ok(a) => {
                    let string_value = String::from_utf8(a.value.to_vec())?;
                    match a.key.local_name().as_ref() {
                        b"position" => {
                            stop.position = string_to_float(&string_value);
                            break;
                        }
                        _ => {}
                    }
                }
                Err(error) => {
                    bail!(error.to_string())
                }
            }
        }

        let mut buf = Vec::new();

        loop {
            buf.clear();

            match reader.read_event_into(&mut buf) {
                Ok(Event::Start(ref e)) if e.local_name().as_ref() == b"color" => {
                    let color = XlsxColor::load(e)?;
                    stop.color = Some(color);
                }
                Ok(Event::End(ref e)) if e.local_name().as_ref() == b"stop" => break,
                Ok(Event::Eof) => bail!("unexpected end of file."),
                Err(e) => bail!(e.to_string()),
                _ => (),
            }
        }

        Ok(stop)
    }
}