1use std::path::PathBuf;
2
3use anyhow::Context as _;
4use editor::items::entry_git_aware_label_color;
5use gpui::{
6 canvas, div, fill, img, opaque_grey, point, size, AnyElement, AppContext, Bounds, EventEmitter,
7 FocusHandle, FocusableView, InteractiveElement, IntoElement, Model, ObjectFit, ParentElement,
8 Render, Styled, Task, View, ViewContext, VisualContext, WeakView, WindowContext,
9};
10use persistence::IMAGE_VIEWER;
11use theme::Theme;
12use ui::prelude::*;
13
14use file_icons::FileIcons;
15use project::{image_store::ImageItemEvent, ImageItem, Project, ProjectPath};
16use settings::Settings;
17use util::paths::PathExt;
18use workspace::{
19 item::{BreadcrumbText, Item, ProjectItem, SerializableItem, TabContentParams},
20 ItemId, ItemSettings, ToolbarItemLocation, Workspace, WorkspaceId,
21};
22
23const IMAGE_VIEWER_KIND: &str = "ImageView";
24
25pub struct ImageView {
26 image_item: Model<ImageItem>,
27 project: Model<Project>,
28 focus_handle: FocusHandle,
29}
30
31impl ImageView {
32 pub fn new(
33 image_item: Model<ImageItem>,
34 project: Model<Project>,
35 cx: &mut ViewContext<Self>,
36 ) -> Self {
37 cx.subscribe(&image_item, Self::on_image_event).detach();
38 Self {
39 image_item,
40 project,
41 focus_handle: cx.focus_handle(),
42 }
43 }
44
45 fn on_image_event(
46 &mut self,
47 _: Model<ImageItem>,
48 event: &ImageItemEvent,
49 cx: &mut ViewContext<Self>,
50 ) {
51 match event {
52 ImageItemEvent::FileHandleChanged | ImageItemEvent::Reloaded => {
53 cx.emit(ImageViewEvent::TitleChanged);
54 cx.notify();
55 }
56 ImageItemEvent::ReloadNeeded => {}
57 }
58 }
59}
60
61pub enum ImageViewEvent {
62 TitleChanged,
63}
64
65impl EventEmitter<ImageViewEvent> for ImageView {}
66
67impl Item for ImageView {
68 type Event = ImageViewEvent;
69
70 fn to_item_events(event: &Self::Event, mut f: impl FnMut(workspace::item::ItemEvent)) {
71 match event {
72 ImageViewEvent::TitleChanged => {
73 f(workspace::item::ItemEvent::UpdateTab);
74 f(workspace::item::ItemEvent::UpdateBreadcrumbs);
75 }
76 }
77 }
78
79 fn for_each_project_item(
80 &self,
81 cx: &AppContext,
82 f: &mut dyn FnMut(gpui::EntityId, &dyn project::ProjectItem),
83 ) {
84 f(self.image_item.entity_id(), self.image_item.read(cx))
85 }
86
87 fn is_singleton(&self, _cx: &AppContext) -> bool {
88 true
89 }
90
91 fn tab_tooltip_text(&self, cx: &AppContext) -> Option<SharedString> {
92 let abs_path = self.image_item.read(cx).file.as_local()?.abs_path(cx);
93 let file_path = abs_path.compact().to_string_lossy().to_string();
94 Some(file_path.into())
95 }
96
97 fn tab_content(&self, params: TabContentParams, cx: &WindowContext) -> AnyElement {
98 let project_path = self.image_item.read(cx).project_path(cx);
99 let label_color = if ItemSettings::get_global(cx).git_status {
100 self.project
101 .read(cx)
102 .entry_for_path(&project_path, cx)
103 .map(|entry| {
104 entry_git_aware_label_color(entry.git_status, entry.is_ignored, params.selected)
105 })
106 .unwrap_or_else(|| params.text_color())
107 } else {
108 params.text_color()
109 };
110
111 let title = project_path
112 .path
113 .file_name()
114 .unwrap_or_else(|| project_path.path.as_os_str())
115 .to_string_lossy()
116 .to_string();
117 Label::new(title)
118 .single_line()
119 .color(label_color)
120 .italic(params.preview)
121 .into_any_element()
122 }
123
124 fn tab_icon(&self, cx: &WindowContext) -> Option<Icon> {
125 let path = self.image_item.read(cx).path();
126 ItemSettings::get_global(cx)
127 .file_icons
128 .then(|| FileIcons::get_icon(path, cx))
129 .flatten()
130 .map(Icon::from_path)
131 }
132
133 fn breadcrumb_location(&self, _: &AppContext) -> ToolbarItemLocation {
134 ToolbarItemLocation::PrimaryLeft
135 }
136
137 fn breadcrumbs(&self, _theme: &Theme, cx: &AppContext) -> Option<Vec<BreadcrumbText>> {
138 let text = breadcrumbs_text_for_image(self.project.read(cx), self.image_item.read(cx), cx);
139 Some(vec![BreadcrumbText {
140 text,
141 highlights: None,
142 font: None,
143 }])
144 }
145
146 fn clone_on_split(
147 &self,
148 _workspace_id: Option<WorkspaceId>,
149 cx: &mut ViewContext<Self>,
150 ) -> Option<View<Self>>
151 where
152 Self: Sized,
153 {
154 Some(cx.new_view(|cx| Self {
155 image_item: self.image_item.clone(),
156 project: self.project.clone(),
157 focus_handle: cx.focus_handle(),
158 }))
159 }
160}
161
162fn breadcrumbs_text_for_image(project: &Project, image: &ImageItem, cx: &AppContext) -> String {
163 let path = image.path();
164 if project.visible_worktrees(cx).count() <= 1 {
165 return path.to_string_lossy().to_string();
166 }
167
168 project
169 .worktree_for_id(image.project_path(cx).worktree_id, cx)
170 .map(|worktree| {
171 PathBuf::from(worktree.read(cx).root_name())
172 .join(path)
173 .to_string_lossy()
174 .to_string()
175 })
176 .unwrap_or_else(|| path.to_string_lossy().to_string())
177}
178
179impl SerializableItem for ImageView {
180 fn serialized_item_kind() -> &'static str {
181 IMAGE_VIEWER_KIND
182 }
183
184 fn deserialize(
185 project: Model<Project>,
186 _workspace: WeakView<Workspace>,
187 workspace_id: WorkspaceId,
188 item_id: ItemId,
189 cx: &mut WindowContext,
190 ) -> Task<gpui::Result<View<Self>>> {
191 cx.spawn(|mut cx| async move {
192 let image_path = IMAGE_VIEWER
193 .get_image_path(item_id, workspace_id)?
194 .ok_or_else(|| anyhow::anyhow!("No image path found"))?;
195
196 let (worktree, relative_path) = project
197 .update(&mut cx, |project, cx| {
198 project.find_or_create_worktree(image_path.clone(), false, cx)
199 })?
200 .await
201 .context("Path not found")?;
202 let worktree_id = worktree.update(&mut cx, |worktree, _cx| worktree.id())?;
203
204 let project_path = ProjectPath {
205 worktree_id,
206 path: relative_path.into(),
207 };
208
209 let image_item = project
210 .update(&mut cx, |project, cx| project.open_image(project_path, cx))?
211 .await?;
212
213 cx.update(|cx| Ok(cx.new_view(|cx| ImageView::new(image_item, project, cx))))?
214 })
215 }
216
217 fn cleanup(
218 workspace_id: WorkspaceId,
219 alive_items: Vec<ItemId>,
220 cx: &mut WindowContext,
221 ) -> Task<gpui::Result<()>> {
222 cx.spawn(|_| IMAGE_VIEWER.delete_unloaded_items(workspace_id, alive_items))
223 }
224
225 fn serialize(
226 &mut self,
227 workspace: &mut Workspace,
228 item_id: ItemId,
229 _closing: bool,
230 cx: &mut ViewContext<Self>,
231 ) -> Option<Task<gpui::Result<()>>> {
232 let workspace_id = workspace.database_id()?;
233 let image_path = self.image_item.read(cx).file.as_local()?.abs_path(cx);
234
235 Some(cx.background_executor().spawn({
236 async move {
237 IMAGE_VIEWER
238 .save_image_path(item_id, workspace_id, image_path)
239 .await
240 }
241 }))
242 }
243
244 fn should_serialize(&self, _event: &Self::Event) -> bool {
245 false
246 }
247}
248
249impl EventEmitter<()> for ImageView {}
250impl FocusableView for ImageView {
251 fn focus_handle(&self, _cx: &AppContext) -> FocusHandle {
252 self.focus_handle.clone()
253 }
254}
255
256impl Render for ImageView {
257 fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {
258 let image = self.image_item.read(cx).image.clone();
259 let checkered_background = |bounds: Bounds<Pixels>, _, cx: &mut WindowContext| {
260 let square_size = 32.0;
261
262 let start_y = bounds.origin.y.0;
263 let height = bounds.size.height.0;
264 let start_x = bounds.origin.x.0;
265 let width = bounds.size.width.0;
266
267 let mut y = start_y;
268 let mut x = start_x;
269 let mut color_swapper = true;
270 // draw checkerboard pattern
271 while y <= start_y + height {
272 // Keeping track of the grid in order to be resilient to resizing
273 let start_swap = color_swapper;
274 while x <= start_x + width {
275 let rect =
276 Bounds::new(point(px(x), px(y)), size(px(square_size), px(square_size)));
277
278 let color = if color_swapper {
279 opaque_grey(0.6, 0.4)
280 } else {
281 opaque_grey(0.7, 0.4)
282 };
283
284 cx.paint_quad(fill(rect, color));
285 color_swapper = !color_swapper;
286 x += square_size;
287 }
288 x = start_x;
289 color_swapper = !start_swap;
290 y += square_size;
291 }
292 };
293
294 let checkered_background = canvas(|_, _| (), checkered_background)
295 .border_2()
296 .border_color(cx.theme().styles.colors.border)
297 .size_full()
298 .absolute()
299 .top_0()
300 .left_0();
301
302 div()
303 .track_focus(&self.focus_handle(cx))
304 .size_full()
305 .child(checkered_background)
306 .child(
307 div()
308 .flex()
309 .justify_center()
310 .items_center()
311 .w_full()
312 // TODO: In browser based Tailwind & Flex this would be h-screen and we'd use w-full
313 .h_full()
314 .child(
315 img(image)
316 .object_fit(ObjectFit::ScaleDown)
317 .max_w_full()
318 .max_h_full()
319 .id("img"),
320 ),
321 )
322 }
323}
324
325impl ProjectItem for ImageView {
326 type Item = ImageItem;
327
328 fn for_project_item(
329 project: Model<Project>,
330 item: Model<Self::Item>,
331 cx: &mut ViewContext<Self>,
332 ) -> Self
333 where
334 Self: Sized,
335 {
336 Self::new(item, project, cx)
337 }
338}
339
340pub fn init(cx: &mut AppContext) {
341 workspace::register_project_item::<ImageView>(cx);
342 workspace::register_serializable_item::<ImageView>(cx)
343}
344
345mod persistence {
346 use anyhow::Result;
347 use std::path::PathBuf;
348
349 use db::{define_connection, query, sqlez::statement::Statement, sqlez_macros::sql};
350 use workspace::{ItemId, WorkspaceDb, WorkspaceId};
351
352 define_connection! {
353 pub static ref IMAGE_VIEWER: ImageViewerDb<WorkspaceDb> =
354 &[sql!(
355 CREATE TABLE image_viewers (
356 workspace_id INTEGER,
357 item_id INTEGER UNIQUE,
358
359 image_path BLOB,
360
361 PRIMARY KEY(workspace_id, item_id),
362 FOREIGN KEY(workspace_id) REFERENCES workspaces(workspace_id)
363 ON DELETE CASCADE
364 ) STRICT;
365 )];
366 }
367
368 impl ImageViewerDb {
369 query! {
370 pub async fn update_workspace_id(
371 new_id: WorkspaceId,
372 old_id: WorkspaceId,
373 item_id: ItemId
374 ) -> Result<()> {
375 UPDATE image_viewers
376 SET workspace_id = ?
377 WHERE workspace_id = ? AND item_id = ?
378 }
379 }
380
381 query! {
382 pub async fn save_image_path(
383 item_id: ItemId,
384 workspace_id: WorkspaceId,
385 image_path: PathBuf
386 ) -> Result<()> {
387 INSERT OR REPLACE INTO image_viewers(item_id, workspace_id, image_path)
388 VALUES (?, ?, ?)
389 }
390 }
391
392 query! {
393 pub fn get_image_path(item_id: ItemId, workspace_id: WorkspaceId) -> Result<Option<PathBuf>> {
394 SELECT image_path
395 FROM image_viewers
396 WHERE item_id = ? AND workspace_id = ?
397 }
398 }
399
400 pub async fn delete_unloaded_items(
401 &self,
402 workspace: WorkspaceId,
403 alive_items: Vec<ItemId>,
404 ) -> Result<()> {
405 let placeholders = alive_items
406 .iter()
407 .map(|_| "?")
408 .collect::<Vec<&str>>()
409 .join(", ");
410
411 let query = format!("DELETE FROM image_viewers WHERE workspace_id = ? AND item_id NOT IN ({placeholders})");
412
413 self.write(move |conn| {
414 let mut statement = Statement::prepare(conn, query)?;
415 let mut next_index = statement.bind(&workspace, 1)?;
416 for id in alive_items {
417 next_index = statement.bind(&id, next_index)?;
418 }
419 statement.exec()
420 })
421 .await
422 }
423 }
424}