Squashed 'mut/neovim/pack/plugins/start/blink.cmp/' content from commit 1cc3b1a

git-subtree-dir: mut/neovim/pack/plugins/start/blink.cmp
git-subtree-split: 1cc3b1a908fbcfd15451c4772759549724f38524

1 files changed, 92 insertions, 0 deletions

diff --git a/lua/blink/cmp/lib/window/scrollbar/geometry.lua b/lua/blink/cmp/lib/window/scrollbar/geometry.lua
new file mode 100644
index 0000000..ad481a0
--- /dev/null
+++ b/lua/blink/cmp/lib/window/scrollbar/geometry.lua
@@ -0,0 +1,92 @@
+--- Helper for calculating placement of the scrollbar thumb and gutter
+
+--- @class blink.cmp.ScrollbarGeometry
+--- @field width number
+--- @field height number
+--- @field row number
+--- @field col number
+--- @field zindex number
+--- @field relative string
+--- @field win number
+
+local M = {}
+
+--- @param target_win number
+--- @return number
+local function get_win_buf_height(target_win)
+  local buf = vim.api.nvim_win_get_buf(target_win)
+
+  -- not wrapping, so just get the line count
+  if not vim.wo[target_win].wrap then return vim.api.nvim_buf_line_count(buf) end
+
+  local width = vim.api.nvim_win_get_width(target_win)
+  local lines = vim.api.nvim_buf_get_lines(buf, 0, -1, false)
+  local height = 0
+  for _, l in ipairs(lines) do
+    height = height + math.max(1, (math.ceil(vim.fn.strwidth(l) / width)))
+  end
+  return height
+end
+
+--- @param border string|string[]
+--- @return number
+local function get_col_offset(border)
+  -- we only need an extra offset when working with a padded window
+  if type(border) == 'table' and border[1] == ' ' and border[4] == ' ' and border[7] == ' ' and border[8] == ' ' then
+    return 1
+  end
+  return 0
+end
+
+--- Gets the starting line, handling line wrapping if enabled
+--- @param target_win number
+--- @param width number
+--- @return number
+local get_content_start_line = function(target_win, width)
+  local start_line = math.max(1, vim.fn.line('w0', target_win))
+  if not vim.wo[target_win].wrap then return start_line end
+
+  local bufnr = vim.api.nvim_win_get_buf(target_win)
+  local wrapped_start_line = 1
+  for _, text in ipairs(vim.api.nvim_buf_get_lines(bufnr, 0, start_line - 1, false)) do
+    -- nvim_buf_get_lines sometimes returns a blob. see hrsh7th/nvim-cmp#2050
+    if vim.fn.type(text) == vim.v.t_blob then text = vim.fn.string(text) end
+    wrapped_start_line = wrapped_start_line + math.max(1, math.ceil(vim.fn.strdisplaywidth(text) / width))
+  end
+  return wrapped_start_line
+end
+
+--- @param target_win number
+--- @return { should_hide: boolean, thumb: blink.cmp.ScrollbarGeometry, gutter: blink.cmp.ScrollbarGeometry }
+function M.get_geometry(target_win)
+  local config = vim.api.nvim_win_get_config(target_win)
+  local width = config.width
+  local height = config.height
+  local zindex = config.zindex
+
+  local buf_height = get_win_buf_height(target_win)
+  local thumb_height = math.max(1, math.floor(height * height / buf_height + 0.5) - 1)
+
+  local start_line = get_content_start_line(target_win, width or 1)
+
+  local pct = (start_line - 1) / (buf_height - height)
+  local thumb_offset = math.floor((pct * (height - thumb_height)) + 0.5)
+  thumb_height = thumb_offset + thumb_height > height and height - thumb_offset or thumb_height
+  thumb_height = math.max(1, thumb_height)
+
+  local common_geometry = {
+    width = 1,
+    row = thumb_offset,
+    col = width + get_col_offset(config.border),
+    relative = 'win',
+    win = target_win,
+  }
+
+  return {
+    should_hide = height >= buf_height,
+    thumb = vim.tbl_deep_extend('force', common_geometry, { height = thumb_height, zindex = zindex + 2 }),
+    gutter = vim.tbl_deep_extend('force', common_geometry, { row = 0, height = height, zindex = zindex + 1 }),
+  }
+end
+
+return M