1 files changed, 86 insertions, 0 deletions
diff --git a/src/preview/preview_file.rs b/src/preview/preview_file.rs
new file mode 100644
index 0000000..5aabb13
--- /dev/null
+++ b/src/preview/preview_file.rs
@@ -0,0 +1,86 @@
+use std::io;
+use std::path;
+use std::process::{Command, Output};
+
+use tui::layout::{Constraint, Direction, Layout, Rect};
+use tui::widgets::{Block, Borders};
+
+use crate::context::AppContext;
+use crate::ui::TuiBackend;
+
+pub fn preview_path_with_script(
+    context: &AppContext,
+    backend: &mut TuiBackend,
+    p: path::PathBuf,
+) -> io::Result<Output> {
+    let preview_options = context.config_ref().preview_options_ref();
+    let config = context.config_ref();
+
+    match preview_options.preview_script.as_ref() {
+        None => Err(io::Error::new(
+            io::ErrorKind::Other,
+            "No preview script specified",
+        )),
+        Some(script) => {
+            let area = backend.terminal.as_ref().unwrap().size().unwrap();
+
+            let constraints: &[Constraint; 3] = &config.display_options_ref().default_layout;
+
+            let layout_rect = if config.display_options_ref().show_borders() {
+                let area = Rect {
+                    y: area.top() + 1,
+                    height: area.height - 2,
+                    ..area
+                };
+
+                let block = Block::default().borders(Borders::ALL);
+                let inner = block.inner(area);
+
+                let layout_rect = Layout::default()
+                    .direction(Direction::Horizontal)
+                    .constraints(constraints.as_ref())
+                    .split(inner);
+
+                let block = Block::default().borders(Borders::LEFT);
+                let inner3 = block.inner(layout_rect[2]);
+                inner3
+            } else {
+                let layout_rect = Layout::default()
+                    .direction(Direction::Horizontal)
+                    .vertical_margin(1)
+                    .constraints(constraints.as_ref())
+                    .split(area);
+                layout_rect[2]
+            };
+
+            let file_full_path = p.as_path();
+            let preview_width = layout_rect.width;
+            let preview_height = layout_rect.height;
+            let image_cache = 0;
+            let preview_image = if preview_options.preview_images { 1 } else { 0 };
+
+            // spawn preview process
+            Command::new(script)
+                .arg(file_full_path)
+                .arg(preview_width.to_string())
+                .arg(preview_height.to_string())
+                .arg(image_cache.to_string())
+                .arg(preview_image.to_string())
+                .output()
+        }
+    }
+}
+
+pub fn preview_with_script(context: &AppContext, backend: &mut TuiBackend) -> io::Result<Output> {
+    let curr_tab = context.tab_context_ref().curr_tab_ref();
+    let child_list = curr_tab.child_list_ref();
+
+    let preview_options = context.config_ref().preview_options_ref();
+
+    let config = context.config_ref();
+
+    match child_list.and_then(|list| list.curr_entry_ref()) {
+        None => Err(io::Error::new(io::ErrorKind::Other, "No file to preview")),
+        Some(entry) => preview_path_with_script(context, backend, entry.file_path().to_path_buf()),
+    }
+}