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Split `TreeView:draw` into multiple functions 

This allows plugins to override each aspect of TreeView item drawing.
This commit is contained in:
Guldoman 2021-12-07 21:44:20 +01:00
parent e500368ce4
commit fdb29f28cf
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GPG Key ID: C08A498EC7F1AFDD
1 changed files with 56 additions and 29 deletions
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85
data/plugins/treeview.lua
View File

@ -43,6 +43,9 @@ function TreeView:new()
self.cache = {}
self.tooltip = { x = 0, y = 0, begin = 0, alpha = 0 }
self.item_icon_width = 0
self.item_text_spacing = 0
local on_dirmonitor_modify = core.on_dirmonitor_modify
function core.on_dirmonitor_modify(dir, filepath)
if self.cache[dir.name] then
@ -260,6 +263,9 @@ function TreeView:update()
self.tooltip.alpha = 0
end
self.item_icon_width = style.icon_font:get_width("D")
self.item_text_spacing = style.icon_font:get_width("f") / 2
TreeView.super.update(self)
end
@ -312,42 +318,63 @@ function TreeView:get_item_text(item, active, hovered)
end
function TreeView:draw_item_text(item, active, hovered, x, y, w, h)
local item_text, item_font, item_color = self:get_item_text(item, active, hovered)
common.draw_text(item_font, item_color, item_text, nil, x, y, 0, h)
end
function TreeView:draw_item_icon(item, active, hovered, x, y, w, h)
local icon_char, icon_font, icon_color = self:get_item_icon(item, active, hovered)
common.draw_text(icon_font, icon_color, icon_char, nil, x, y, 0, h)
return self.item_icon_width + self.item_text_spacing
end
function TreeView:draw_item_body(item, active, hovered, x, y, w, h)
x = x + self:draw_item_icon(item, active, hovered, x, y, w, h)
self:draw_item_text(item, active, hovered, x, y, w, h)
end
function TreeView:draw_item_chevron(item, active, hovered, x, y, w, h)
if item.type == "dir" then
local chevron_icon = item.expanded and "-" or "+"
local chevron_color = hovered and style.accent or style.text
common.draw_text(style.icon_font, chevron_color, chevron_icon, nil, x, y, 0, h)
end
return style.padding.x
end
function TreeView:draw_item_background(item, active, hovered, x, y, w, h)
if hovered then
renderer.draw_rect(x, y, w, h, style.line_highlight)
end
end
function TreeView:draw_item(item, active, hovered, x, y, w, h)
self:draw_item_background(item, active, hovered, x, y, w, h)
x = x + item.depth * style.padding.x + style.padding.x
x = x + self:draw_item_chevron(item, active, hovered, x, y, w, h)
self:draw_item_body(item, active, hovered, x, y, w, h)
end
function TreeView:draw()
self:draw_background(style.background2)
local icon_width = style.icon_font:get_width("D")
local spacing = style.icon_font:get_width("f") / 2
local doc = core.active_view.doc
local active_filename = doc and system.absolute_path(doc.filename or "")
for item, x,y,w,h in self:each_item() do
local icon_char, icon_font, icon_color =
self:get_item_icon(item, item.abs_filename == active_filename,
item == self.hovered_item)
local item_text, item_font, item_color =
self:get_item_text(item, item.abs_filename == active_filename,
item == self.hovered_item)
-- hovered item background
if item == self.hovered_item then
renderer.draw_rect(x, y, w, h, style.line_highlight)
end
-- icons
x = x + item.depth * style.padding.x + style.padding.x
if item.type == "dir" then
local expand_icon = item.expanded and "-" or "+"
local expand_color = item == self.hovered_item and style.accent or style.text
common.draw_text(style.icon_font, expand_color, expand_icon, nil, x, y, 0, h)
end
x = x + style.padding.x
common.draw_text(icon_font, icon_color, icon_char, nil, x, y, 0, h)
x = x + icon_width
-- text
x = x + spacing
x = common.draw_text(item_font, item_color, item_text, nil, x, y, 0, h)
self:draw_item(item,
item.abs_filename == active_filename,
item == self.hovered_item,
x, y, w, h)
end
self:draw_scrollbar()