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treeview: add horizontal scrolling #1717

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treeview: add horizontal scrolling #1717

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f2e6467
treeview: add horizontal scrolling
takase1121 Feb 4, 2024
892bd6a
treeview: Fix broken click/hover when scrolled
takase1121 Feb 4, 2024
9cb95e7
treeview: show tooltip for entire selection
takase1121 Feb 4, 2024
c773b33
treeview: make sure scroll_width is not smaller than scroll.x
takase1121 Feb 5, 2024
a68a456
treeview: shrink the scrollable width to current scroll position
takase1121 Feb 6, 2024
71a10c4
treeview: reduce scrollable size when scrollbar is released
takase1121 Feb 28, 2024
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treeview: add horizontal scrolling 
This is taken from Pragtical but I wasn't able to cherry pick the commit,
so I ended up recreating it.

Co-authored-by: Jefferson González <jgmdev@gmail.com>
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@takase1121 @jgmdev
takase1121 and jgmdev committed Feb 4, 2024
commit f2e6467c0b106aa8c001b556a597935d00f63744
28 changes: 21 additions & 7 deletions data/plugins/treeview.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -48,6 +48,7 @@ function TreeView:new()
self.scrollable = true
self.visible = true
self.init_size = true
self.scroll_width = 0
self.target_size = config.plugins.treeview.size
self.cache = {}
self.tooltip = { x = 0, y = 0, begin = 0, alpha = 0 }
Expand Down Expand Up @@ -344,6 +345,14 @@ function TreeView:get_scrollable_size()
end


function TreeView:get_h_scrollable_size()
local _, _, v_scroll_w = self.v_scrollbar:get_thumb_rect()
return self.scroll_width + (
self.size.x > self.scroll_width + v_scroll_w and 0 or style.padding.x
)
end


function TreeView:draw_tooltip()
local text = common.home_encode(self.hovered_item.abs_filename)
local w, h = style.font:get_width(text), style.font:get_height(text)
Expand Down Expand Up @@ -389,7 +398,7 @@ 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)
return common.draw_text(item_font, item_color, item_text, nil, x, y, 0, h)
end


Expand All @@ -402,7 +411,7 @@ 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)
return self:draw_item_text(item, active, hovered, x, y, w, h)
end


Expand All @@ -420,9 +429,9 @@ function TreeView:draw_item_background(item, active, hovered, x, y, w, h)
if hovered then
local hover_color = { table.unpack(style.line_highlight) }
hover_color[4] = 160
renderer.draw_rect(x, y, w, h, hover_color)
renderer.draw_rect(self.position.x, y, self.size.x, h, hover_color)
elseif active then
renderer.draw_rect(x, y, w, h, style.line_highlight)
renderer.draw_rect(self.position.x, y, self.size.x, h, style.line_highlight)
end
end

Expand All @@ -433,7 +442,7 @@ function TreeView:draw_item(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)
return self:draw_item_body(item, active, hovered, x, y, w, h)
end


Expand All @@ -445,12 +454,16 @@ function TreeView:draw()
local doc = core.active_view.doc
local active_filename = doc and system.absolute_path(doc.filename or "")

local ox = math.abs(self:get_content_offset())
for item, x,y,w,h in self:each_item() do
if y + h >= _y and y < _y + _h then
self:draw_item(item,
local w = self:draw_item(
item,
item == self.selected_item,
item == self.hovered_item,
x, y, w, h)
x, y, w, h
) + ox
self.scroll_width = math.max(w, self.scroll_width)
end
end

Expand Down Expand Up @@ -511,6 +524,7 @@ function TreeView:toggle_expand(toggle, item)
if not item then return end

if item.type == "dir" then
self.scroll_width = 0
if type(toggle) == "boolean" then
item.expanded = toggle
else
Expand Down
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