init

2026-02-26 11:15:22 +01:00
commit d36d07d224
19 changed files with 2020 additions and 0 deletions
--- a/lua/custom/plugins/pdf-viewer.lua
+++ b/lua/custom/plugins/pdf-viewer.lua
@@ -0,0 +1,114 @@
+-- Simple PDF viewer using pdftoppm + image.nvim
+-- Requires: poppler (brew install poppler)
+
+return {
+  '3rd/image.nvim',
+  config = function()
+    local image = require('image')
+    image.setup({})
+    
+    local pdf_state = {}
+    
+    vim.api.nvim_create_autocmd('BufReadPost', {
+      pattern = '*.pdf',
+      callback = function()
+        local pdf_path = vim.fn.expand('%:p')
+        local temp_dir = vim.fn.tempname()
+        vim.fn.mkdir(temp_dir, 'p')
+        local bufnr = vim.api.nvim_get_current_buf()
+        
+        -- Convert all pages upfront
+        vim.notify('Converting PDF...', vim.log.levels.INFO)
+        
+        vim.fn.jobstart({
+          'pdftoppm', '-png',
+          pdf_path, temp_dir .. '/page'
+        }, {
+          on_exit = function(_, code)
+            vim.schedule(function()
+              if code ~= 0 then
+                vim.notify('Failed to convert PDF', vim.log.levels.ERROR)
+                return
+              end
+              
+              -- Count generated files
+              local handle = vim.loop.fs_scandir(temp_dir)
+              local page_count = 0
+              if handle then
+                while true do
+                  local name = vim.loop.fs_scandir_next(handle)
+                  if not name then break end
+                  if name:match('^page%-%d+%.png$') then
+                    page_count = page_count + 1
+                  end
+                end
+              end
+              
+              pdf_state[bufnr] = {
+                temp_dir = temp_dir,
+                current_page = 1,
+                total_pages = page_count,
+              }
+              
+              local function show_page(page_num)
+                local state = pdf_state[bufnr]
+                if not state then return end
+                
+                image.clear()
+                
+                vim.bo[bufnr].modifiable = true
+                vim.api.nvim_buf_set_lines(bufnr, 0, -1, false, {''})
+                vim.bo[bufnr].modifiable = false
+                
+                local page_file = string.format('%s/page-%02d.png', state.temp_dir, page_num)
+                local img = image.from_file(page_file, { buffer = bufnr })
+                
+                if img then
+                  img:render()
+                  vim.notify(string.format('Page %d / %d', page_num, state.total_pages), vim.log.levels.INFO)
+                else
+                  vim.notify('Failed to load page ' .. page_num, vim.log.levels.ERROR)
+                end
+              end
+              
+              local function change_page(delta)
+                local state = pdf_state[bufnr]
+                if not state then return end
+                
+                local new_page = state.current_page + delta
+                if new_page < 1 or new_page > state.total_pages then
+                  return
+                end
+                
+                state.current_page = new_page
+                show_page(new_page)
+              end
+              
+              -- Keymaps
+              vim.keymap.set('n', 'j', function() change_page(1) end, { buffer = bufnr, desc = 'Next page' })
+              vim.keymap.set('n', 'k', function() change_page(-1) end, { buffer = bufnr, desc = 'Previous page' })
+              vim.keymap.set('n', '<Right>', function() change_page(1) end, { buffer = bufnr, desc = 'Next page' })
+              vim.keymap.set('n', '<Left>', function() change_page(-1) end, { buffer = bufnr, desc = 'Previous page' })
+              vim.keymap.set('n', 'q', '<cmd>bd!<cr>', { buffer = bufnr, silent = true })
+              
+              -- Show first page
+              show_page(1)
+            end)
+          end
+        })
+      end,
+    })
+    
+    -- Cleanup
+    vim.api.nvim_create_autocmd('BufDelete', {
+      pattern = '*.pdf',
+      callback = function(args)
+        if pdf_state[args.buf] then
+          image.clear()
+          vim.fn.delete(pdf_state[args.buf].temp_dir, 'rf')
+          pdf_state[args.buf] = nil
+        end
+      end,
+    })
+  end,
+}