Merge pull request #755 from Jipok/draw_tab_rework

rootview.lua: Refactor Node:draw_tab

data/core/node.lua

@@ -260,8 +260,8 @@ end
 
 local function close_button_location(x, w)
   local cw = style.icon_font:get_width("C")
-  local pad = style.padding.y
-  return x + w - pad - cw, cw, pad
+  local pad = style.padding.x / 2
+  return x + w - cw - pad, cw, pad
 end
 
 
@@ -476,51 +476,59 @@ function Node:update()
   end
 end
 
-function Node:draw_tab(text, is_active, is_hovered, is_close_hovered, x, y, w, h, standalone)
+function Node:draw_tab_title(view, font, is_active, is_hovered, x, y, w, h)
+  local text = view and view:get_name() or ""
+  local dots_width = font:get_width("…")
+  local align = "center"
+  if font:get_width(text) > w then
+    align = "left"
+    for i = 1, #text do
+      local reduced_text = text:sub(1, #text - i)
+      if font:get_width(reduced_text) + dots_width <= w then
+        text = reduced_text .. "…"
+        break
+      end
+    end
+  end
+  local color = style.dim
+  if is_active then color = style.text end
+  if is_hovered then color = style.text end
+  common.draw_text(font, color, text, align, x, y, w, h)
+end
+
+function Node:draw_tab_borders(view, is_active, is_hovered, x, y, w, h, standalone)
+  -- Tabs deviders
   local ds = style.divider_size
-  local dots_width = style.font:get_width("…")
   local color = style.dim
   local padding_y = style.padding.y
   renderer.draw_rect(x + w, y + padding_y, ds, h - padding_y*2, style.dim)
   if standalone then
     renderer.draw_rect(x-1, y-1, w+2, h+2, style.background2)
   end
+  -- Full border
   if is_active then
     color = style.text
     renderer.draw_rect(x, y, w, h, style.background)
     renderer.draw_rect(x + w, y, ds, h, style.divider)
     renderer.draw_rect(x - ds, y, ds, h, style.divider)
   end
-  local cx, cw, cspace = close_button_location(x, w)
+  return x + ds, y, w - ds*2, h
+end
+
+function Node:draw_tab(view, is_active, is_hovered, is_close_hovered, x, y, w, h, standalone)
+  x, y, w, h = self:draw_tab_borders(view, is_active, is_hovered, x, y, w, h, standalone)
+  -- Close button
+  local cx, cw, cpad = close_button_location(x, w)
   local show_close_button = ((is_active or is_hovered) and not standalone and config.tab_close_button)
   if show_close_button then
     local close_style = is_close_hovered and style.text or style.dim
-    common.draw_text(style.icon_font, close_style, "C", nil, cx, y, 0, h)
+    common.draw_text(style.icon_font, close_style, "C", nil, cx, y, cw, h)
   end
-  if is_hovered then
-    color = style.text
-  end
-  local padx = style.padding.x
-  -- Normally we should substract "cspace" from text_avail_width and from the
-  -- clipping width. It is the padding space we give to the left and right of the
-  -- close button. However, since we are using dots to terminate filenames, we
-  -- choose to ignore "cspace" accepting that the text can possibly "touch" the
-  -- close button.
-  local text_avail_width = cx - x - padx
-  core.push_clip_rect(x, y, cx - x, h)
-  x, w = x + padx, w - padx * 2
-  local align = "center"
-  if style.font:get_width(text) > text_avail_width then
-    align = "left"
-    for i = 1, #text do
-      local reduced_text = text:sub(1, #text - i)
-      if style.font:get_width(reduced_text) + dots_width <= text_avail_width then
-        text = reduced_text .. "…"
-        break
-      end
-    end
-  end
-  common.draw_text(style.font, color, text, align, x, y, w, h)
+  -- Title
+  x = x + cpad
+  w = cx - x
+  core.push_clip_rect(x, y, w, h)
+  self:draw_tab_title(view, style.font, is_active, is_hovered, x, y, w, h)
   core.pop_clip_rect()
 end
 
@@ -547,7 +555,7 @@ function Node:draw_tabs()
   for i = self.tab_offset, self.tab_offset + tabs_number - 1 do
     local view = self.views[i]
     local x, y, w, h = self:get_tab_rect(i)
-    self:draw_tab(view:get_name(), view == self.active_view,
+    self:draw_tab(view, view == self.active_view,
                   i == self.hovered_tab, i == self.hovered_close,
                   x, y, w, h)
   end

data/core/rootview.lua

@@ -390,8 +390,8 @@ function RootView:draw_grabbed_tab()
   local _,_, w, h = dn.node:get_tab_rect(dn.idx)
   local x = self.mouse.x - w / 2
   local y = self.mouse.y - h / 2
-  local text = dn.node.views[dn.idx] and dn.node.views[dn.idx]:get_name() or ""
-  self.root_node:draw_tab(text, true, true, false, x, y, w, h, true)
+  local view = dn.node.views[dn.idx]
+  self.root_node:draw_tab(view, true, true, false, x, y, w, h, true)
 end