feat: vertical layouts. see 'layout_strategy'

2020-09-04 00:36:28 -04:00
parent 839f57efb3
commit 996f69465e
4 changed files with 177 additions and 49 deletions
--- a/lua/telescope/pickers/layout_strategies.lua
+++ b/lua/telescope/pickers/layout_strategies.lua
@@ -0,0 +1,121 @@
+
+local layout_strategies = {}
+
+layout_strategies.horizontal = function(self, max_columns, max_lines, prompt_title)
+  local initial_options = self:_get_initial_window_options(prompt_title)
+  local preview = initial_options.preview
+  local results = initial_options.results
+  local prompt = initial_options.prompt
+
+  -- TODO: Test with 120 width terminal
+  -- TODO: Test with self.width.
+
+  local width_padding = 10
+  if not self.previewer or max_columns < self.preview_cutoff then
+    width_padding = 2
+    preview.width = 0
+  elseif max_columns < 150 then
+    width_padding = 5
+    preview.width = math.floor(max_columns * 0.4)
+  elseif max_columns < 200 then
+    preview.width = 80
+  else
+    preview.width = 120
+  end
+
+  local other_width = max_columns - preview.width - (2 * width_padding)
+  results.width = other_width
+  prompt.width = other_width
+
+  local base_height
+  if max_lines < 40 then
+    base_height = math.min(math.floor(max_lines * 0.8), max_lines - 8)
+  else
+    base_height = math.floor(max_lines * 0.8)
+  end
+  results.height = base_height
+  results.minheight = results.height
+  prompt.height = 1
+  prompt.minheight = prompt.height
+
+  if self.previewer then
+    preview.height = results.height + prompt.height + 2
+    preview.minheight = preview.height
+  else
+    preview.height = 0
+  end
+
+  results.col = width_padding
+  prompt.col = width_padding
+  preview.col = results.col + results.width + 2
+
+  -- TODO: Center this in the page a bit better.
+  local height_padding = math.max(math.floor(0.95 * max_lines), 2)
+  results.line = max_lines - height_padding
+  prompt.line = results.line + results.height + 2
+  preview.line = results.line
+
+  return {
+    preview = preview.width > 0 and preview,
+    results = results,
+    prompt = prompt,
+  }
+end
+
+layout_strategies.vertical = function(self, max_columns, max_lines, prompt_title)
+  local initial_options = self:_get_initial_window_options(prompt_title)
+
+  local preview = initial_options.preview
+  local results = initial_options.results
+  local prompt = initial_options.prompt
+
+  local width_padding = math.ceil((1 - self.window.width) * 0.5 * max_columns)
+  local width = max_columns - width_padding * 2
+  if not self.previewer then
+    preview.width = 0
+  else
+    preview.width = width
+  end
+  results.width = width
+  prompt.width = width
+
+  -- Height
+  local height_padding = 3
+
+  results.height = 10
+  results.minheight = 10
+  prompt.height = 1
+  prompt.minheight = 1
+
+  -- The last 2 * 2 is for the extra borders
+  if self.previewer then
+    preview.height = max_lines - results.height - prompt.height - 2 * 2 - height_padding * 2
+    preview.minheight = preview.height
+  else
+    results.height = max_lines - prompt.height - 2 - height_padding * 2
+    results.minheight = results.height
+  end
+
+  results.col, preview.col, prompt.col = width_padding, width_padding, width_padding
+
+  if self.previewer then
+    preview.line = height_padding
+    results.line = preview.line + preview.height + 2
+    prompt.line = results.line + results.height + 2
+  else
+    results.line = height_padding
+    prompt.line = results.line + results.height + 2
+  end
+
+  return {
+    preview = preview.width > 0 and preview,
+    results = results,
+    prompt = prompt
+  }
+end
+
+-- TODO: Add "flex"
+-- If you don't have enough width, use the height one
+-- etc.
+
+return layout_strategies