rush_sync_server/output/
scroll.rs

1pub struct ScrollState {
2    pub offset: usize,
3    pub window_height: usize,
4    content_height: usize,
5    auto_scroll: bool,
6    force_scroll: bool,
7}
8
9impl ScrollState {
10    pub fn new() -> Self {
11        Self {
12            offset: 0,
13            window_height: 0,
14            content_height: 0,
15            auto_scroll: true,
16            force_scroll: false,
17        }
18    }
19
20    pub fn update_dimensions(&mut self, window_height: usize, content_height: usize) {
21        let max_offset = content_height.saturating_sub(window_height);
22
23        if window_height > self.window_height && !self.auto_scroll {
24            let ratio = self.offset as f64 / self.content_height.max(1) as f64;
25            self.offset = (ratio * content_height as f64).round() as usize;
26        }
27
28        self.window_height = window_height;
29        self.content_height = content_height;
30        self.offset = self.offset.min(max_offset);
31
32        if self.auto_scroll || self.force_scroll {
33            self.offset = max_offset;
34            self.force_scroll = false;
35        }
36    }
37
38    pub fn scroll_up(&mut self, amount: usize) {
39        self.auto_scroll = false;
40        self.force_scroll = false;
41        if self.offset > 0 {
42            self.offset = self.offset.saturating_sub(amount);
43        }
44    }
45
46    pub fn scroll_down(&mut self, amount: usize) {
47        let max_offset = if self.content_height > self.window_height {
48            self.content_height - self.window_height
49        } else {
50            0
51        };
52
53        if self.offset >= max_offset {
54            self.auto_scroll = true;
55        } else {
56            self.auto_scroll = false;
57            self.offset = (self.offset + amount).min(max_offset);
58        }
59        self.force_scroll = false;
60    }
61
62    // Neue Methode zum Erzwingen des Auto-Scrolls
63    pub fn force_auto_scroll(&mut self) {
64        self.force_scroll = true;
65        self.auto_scroll = true;
66    }
67
68    pub fn get_visible_range(&self) -> (usize, usize) {
69        if self.content_height <= self.window_height {
70            return (0, self.content_height);
71        }
72
73        let start = self.offset;
74        let end = (self.offset + self.window_height).min(self.content_height);
75
76        (start, end)
77    }
78
79    pub fn can_scroll(&self) -> bool {
80        true
81    }
82
83    pub fn is_auto_scroll(&self) -> bool {
84        self.auto_scroll
85    }
86}
87
88impl Default for ScrollState {
89    fn default() -> Self {
90        Self::new()
91    }
92}
rush_sync_server/output/scroll.rs

rush_sync_server/output/
scroll.rs
