lite/data/core/rootview.lua

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local core = require "core"
local common = require "core.common"
local style = require "core.style"
local keymap = require "core.keymap"
local Object = require "core.object"
local View = require "core.view"
local DocView = require "core.docview"
local Node = require "core.node"
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local function copy_position_and_size(dst, src)
dst.position.x, dst.position.y = src.position.x, src.position.y
dst.size.x, dst.size.y = src.size.x, src.size.y
end
local RootView = View:extend()
function RootView:new()
RootView.super.new(self)
self.root_node = Node()
self.deferred_draws = {}
self.mouse = { x = 0, y = 0 }
end
function RootView:defer_draw(fn, ...)
table.insert(self.deferred_draws, 1, { fn = fn, ... })
end
function RootView:get_active_node()
return self.root_node:get_node_for_view(core.active_view)
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end
function RootView:open_doc(doc)
local node = self:get_active_node()
if node.locked and core.last_active_view then
core.set_active_view(core.last_active_view)
node = self:get_active_node()
end
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assert(not node.locked, "Cannot open doc on locked node")
for i, view in ipairs(node.views) do
if view.doc == doc then
node:set_active_view(node.views[i])
return view
end
end
local view = DocView(doc)
node:add_view(view)
self.root_node:update_layout()
view:scroll_to_line(view.doc:get_selection(), true, true)
return view
end
function RootView:on_mouse_pressed(button, x, y, clicks)
local div = self.root_node:get_divider_overlapping_point(x, y)
if div then
self.dragged_divider = div
return
end
local node = self.root_node:get_child_overlapping_point(x, y)
local idx = node:get_tab_overlapping_point(x, y)
if idx then
node:set_active_view(node.views[idx])
if button == "middle" then
node:close_active_view(self.root_node)
end
else
core.set_active_view(node.active_view)
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node.active_view:on_mouse_pressed(button, x, y, clicks)
end
end
function RootView:on_mouse_released(...)
if self.dragged_divider then
self.dragged_divider = nil
end
self.root_node:on_mouse_released(...)
end
function RootView:on_mouse_moved(x, y, dx, dy)
if self.dragged_divider then
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local node = self.dragged_divider
if node.type == "hsplit" then
node.divider = node.divider + dx / node.size.x
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else
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node.divider = node.divider + dy / node.size.y
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end
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node.divider = common.clamp(node.divider, 0.01, 0.99)
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return
end
self.mouse.x, self.mouse.y = x, y
self.root_node:on_mouse_moved(x, y, dx, dy)
local node = self.root_node:get_child_overlapping_point(x, y)
local div = self.root_node:get_divider_overlapping_point(x, y)
if div then
system.set_cursor(div.type == "hsplit" and "sizeh" or "sizev")
elseif node:get_tab_overlapping_point(x, y) then
system.set_cursor("arrow")
else
system.set_cursor(node.active_view.cursor)
end
end
function RootView:on_mouse_wheel(...)
local x, y = self.mouse.x, self.mouse.y
local node = self.root_node:get_child_overlapping_point(x, y)
node.active_view:on_mouse_wheel(...)
end
function RootView:on_text_input(...)
core.active_view:on_text_input(...)
end
function RootView:update()
copy_position_and_size(self.root_node, self)
self.root_node:update()
self.root_node:update_layout()
end
function RootView:draw()
self.root_node:draw()
while #self.deferred_draws > 0 do
local t = table.remove(self.deferred_draws)
t.fn(table.unpack(t))
end
end
return RootView