ppt-rs 0.2.14

Create, read, and update PowerPoint 2007+ (.pptx) files with rich formatting, bullet styles, themes, and templates.
Documentation 
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

//! Paragraph - a block of text with alignment and spacing

use super::run::Run;
use super::TextAlign;
use crate::core::ToXml;

/// A paragraph containing one or more runs
#[derive(Clone, Debug)]
pub struct Paragraph {
    pub runs: Vec<Run>,
    pub align: TextAlign,
    pub level: u32,
    pub bullet: bool,
    pub spacing_before: Option<u32>,
    pub spacing_after: Option<u32>,
    pub line_spacing: Option<u32>,
}

impl Paragraph {
    /// Create a new empty paragraph
    pub fn new() -> Self {
        Paragraph {
            runs: Vec::new(),
            align: TextAlign::Left,
            level: 0,
            bullet: false,
            spacing_before: None,
            spacing_after: None,
            line_spacing: None,
        }
    }

    /// Create a paragraph with text
    pub fn with_text(text: &str) -> Self {
        let mut p = Self::new();
        p.runs.push(Run::new(text));
        p
    }

    /// Add a run
    pub fn add_run(mut self, run: Run) -> Self {
        self.runs.push(run);
        self
    }

    /// Add plain text
    pub fn add_text(mut self, text: &str) -> Self {
        self.runs.push(Run::new(text));
        self
    }

    /// Set alignment
    pub fn align(mut self, align: TextAlign) -> Self {
        self.align = align;
        self
    }

    /// Set as bullet point
    pub fn bullet(mut self) -> Self {
        self.bullet = true;
        self
    }

    /// Set indent level (0-8)
    pub fn level(mut self, level: u32) -> Self {
        self.level = level.min(8);
        self
    }

    /// Set spacing before (in points)
    pub fn spacing_before(mut self, points: u32) -> Self {
        self.spacing_before = Some(points * 100);
        self
    }

    /// Set spacing after (in points)
    pub fn spacing_after(mut self, points: u32) -> Self {
        self.spacing_after = Some(points * 100);
        self
    }

    /// Generate XML for this paragraph
    pub fn to_xml(&self) -> String {
        let mut xml = String::from("<a:p>");
        
        // Paragraph properties
        let mut ppr = format!(r#"<a:pPr algn="{}" lvl="{}""#, self.align.to_xml(), self.level);
        
        if self.spacing_before.is_some() || self.spacing_after.is_some() || self.line_spacing.is_some() {
            ppr.push('>');
            if let Some(before) = self.spacing_before {
                ppr.push_str(&format!(r#"<a:spcBef><a:spcPts val="{}"/></a:spcBef>"#, before));
            }
            if let Some(after) = self.spacing_after {
                ppr.push_str(&format!(r#"<a:spcAft><a:spcPts val="{}"/></a:spcAft>"#, after));
            }
            if self.bullet {
                ppr.push_str("<a:buChar char=\"•\"/>");
            }
            ppr.push_str("</a:pPr>");
        } else if self.bullet {
            ppr.push_str("><a:buChar char=\"•\"/></a:pPr>");
        } else {
            ppr.push_str("/>");
        }
        
        xml.push_str(&ppr);
        
        // Runs
        for run in &self.runs {
            xml.push_str(&run.to_xml());
        }
        
        xml.push_str("</a:p>");
        xml
    }
}

impl ToXml for Paragraph {
    fn to_xml(&self) -> String {
        Paragraph::to_xml(self)
    }
}

impl Default for Paragraph {
    fn default() -> Self {
        Self::new()
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_paragraph_to_xml() {
        let para = Paragraph::new()
            .add_run(Run::new("Bold text").bold())
            .add_run(Run::new(" normal text"))
            .align(TextAlign::Center);
        
        let xml = para.to_xml();
        
        assert!(xml.contains("<a:p>"));
        assert!(xml.contains("algn=\"ctr\""));
        assert!(xml.contains("Bold text"));
        assert!(xml.contains("normal text"));
    }

    #[test]
    fn test_paragraph_with_bullet() {
        let para = Paragraph::with_text("Bullet item").bullet();
        let xml = para.to_xml();
        
        assert!(xml.contains("buChar"));
    }
}