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Convert the align layout to the new widget system 

Signed-off-by: Uli Schlachter <psychon@znc.in>
This commit is contained in:
Uli Schlachter 2015-06-14 16:03:29 +02:00
parent 02f67b61b4
commit e67e2813e9
3 changed files with 111 additions and 96 deletions
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42
lib/wibox/layout/align.lua
View File

@ -15,12 +15,13 @@ local widget_base = require("wibox.widget.base")
local align = {}
--- Draw an align layout.
--- Calculate the layout of an align layout.
-- @param context The context in which we are drawn.
-- @param cr The cairo context to use.
-- @param width The available width.
-- @param height The available height.
function align:draw(context, cr, width, height)
function align:layout(context, width, height)
local result = {}
-- Draw will have to deal with all three align modes and should work in a
-- way that makes sense if one or two of the widgets are missing (if they
-- are all missing, it won't draw anything.) It should also handle the case
@ -45,8 +46,7 @@ function align:draw(context, cr, width, height)
-- if all the space is taken, skip the rest, and draw just the middle
-- widget
if size_second >= size_remains then
base.draw_widget(context, cr, self.second, 0, 0, width, height)
return
return { widget_base.place_widget_at(self.second, 0, 0, width, height) }
else
-- the middle widget is sized first, the outside widgets are given
-- the remaining space if available we will draw later
@ -84,7 +84,7 @@ function align:draw(context, cr, width, height)
w = size_remains
end
end
base.draw_widget(context, cr, self.first, 0, 0, w, h)
table.insert(result, widget_base.place_widget_at(self.first, 0, 0, w, h))
end
-- size_remains will be <= 0 if first used all the space
if self.third and size_remains > 0 then
@ -110,7 +110,7 @@ function align:draw(context, cr, width, height)
end
end
local x, y = width - w, height - h
base.draw_widget(context, cr, self.third, x, y, w, h)
table.insert(result, widget_base.place_widget_at(self.third, x, y, w, h))
end
-- here we either draw the second widget in the space set aside for it
-- in the beginning, or in the remaining space, if it is "inside"
@ -133,37 +133,27 @@ function align:draw(context, cr, width, height)
x = floor( (width -w)/2 )
end
end
base.draw_widget(context, cr, self.second, x, y, w, h)
table.insert(result, widget_base.place_widget_at(self.second, x, y, w, h))
end
end
local function widget_changed(layout, old_w, new_w)
if old_w then
old_w:disconnect_signal("widget::updated", layout._emit_updated)
end
if new_w then
widget_base.check_widget(new_w)
new_w:weak_connect_signal("widget::updated", layout._emit_updated)
end
layout._emit_updated()
return result
end
--- Set the layout's first widget. This is the widget that is at the left/top
function align:set_first(widget)
widget_changed(self, self.first, widget)
self.first = widget
self:emit_signal("widget::layout_changed")
end
--- Set the layout's second widget. This is the centered one.
function align:set_second(widget)
widget_changed(self, self.second, widget)
self.second = widget
self:emit_signal("widget::layout_changed")
end
--- Set the layout's third widget. This is the widget that is at the right/bottom
function align:set_third(widget)
widget_changed(self, self.third, widget)
self.third = widget
self:emit_signal("widget::layout_changed")
end
--- Fit the align layout into the given space. The align layout will
@ -192,6 +182,7 @@ function align:fit(context, orig_width, orig_height)
end
return used_in_dir, used_in_other
end
--- Set the expand mode which determines how sub widgets expand to take up
-- unused space. Options are:
-- "inside" - Default option. Size of outside widgets is determined using their
@ -210,22 +201,19 @@ function align:set_expand(mode)
else
self._expand = "inside"
end
self:emit_signal("widget::updated")
self:emit_signal("widget::layout_changed")
end
function align:reset()
for k, v in pairs({ "first", "second", "third" }) do
self[v] = nil
end
self:emit_signal("widget::updated")
self:emit_signal("widget::layout_changed")
end
local function get_layout(dir)
local ret = widget_base.make_widget()
ret.dir = dir
ret._emit_updated = function()
ret:emit_signal("widget::updated")
end
for k, v in pairs(align) do
if type(v) == "function" then

119
spec/wibox/layout/align_spec.lua
View File

@ -5,11 +5,9 @@
local align = require("wibox.layout.align")
local utils = require("wibox.test_utils")
local p = require("wibox.widget.base").place_widget_at
describe("wibox.layout.flex", function()
before_each(utils.stub_draw_widget)
after_each(utils.revert_draw_widget)
describe("wibox.layout.align", function()
describe("expand=none", function()
local layout
before_each(function()
@ -21,9 +19,8 @@ describe("wibox.layout.flex", function()
assert.widget_fit(layout, { 10, 10 }, { 0, 0 })
end)
it("empty layout draw", function()
layout:draw(nil, nil, 0, 0)
utils.check_widgets_drawn({})
it("empty layout layout", function()
assert.is.same({}, layout:layout(0, 0))
end)
describe("with widgets", function()
@ -44,12 +41,11 @@ describe("wibox.layout.flex", function()
assert.widget_fit(layout, { 100, 100 }, { 15, 35 })
end)
it("draw", function()
layout:draw("wibox", "cr", 100, 100)
utils.check_widgets_drawn({
{ first, 0, 0, 100, 10 },
{ third, 0, 90, 100, 10 },
{ second, 0, 42, 100, 15 },
it("layout", function()
assert.widget_layout(layout, { 100, 100 }, {
p(first, 0, 0, 100, 10),
p(third, 0, 90, 100, 10),
p(second, 0, 42, 100, 15),
})
end)
end)
@ -59,12 +55,11 @@ describe("wibox.layout.flex", function()
assert.widget_fit(layout, { 5, 100 }, { 5, 35 })
end)
it("draw", function()
layout:draw("wibox", "cr", 5, 100)
utils.check_widgets_drawn({
{ first, 0, 0, 5, 10 },
{ third, 0, 90, 5, 10 },
{ second, 0, 42, 5, 15 },
it("layout", function()
assert.widget_layout(layout, { 5, 100 }, {
p(first, 0, 0, 5, 10),
p(third, 0, 90, 5, 10),
p(second, 0, 42, 5, 15),
})
end)
end)
@ -74,12 +69,11 @@ describe("wibox.layout.flex", function()
assert.widget_fit(layout, { 100, 20 }, { 15, 20 })
end)
it("draw", function()
layout:draw("wibox", "cr", 100, 20)
utils.check_widgets_drawn({
{ first, 0, 0, 100, 2 },
{ third, 0, 18, 100, 2 },
{ second, 0, 2, 100, 15 },
it("layout", function()
assert.widget_layout(layout, { 100, 20 }, {
p(first, 0, 0, 100, 2),
p(third, 0, 18, 100, 2),
p(second, 0, 2, 100, 15),
})
end)
end)
@ -97,9 +91,8 @@ describe("wibox.layout.flex", function()
assert.widget_fit(layout, { 10, 10 }, { 0, 0 })
end)
it("empty layout draw", function()
layout:draw(nil, nil, 0, 0)
utils.check_widgets_drawn({})
it("empty layout layout", function()
assert.widget_layout(layout, { 0, 0 }, {})
end)
describe("with widgets", function()
@ -120,12 +113,11 @@ describe("wibox.layout.flex", function()
assert.widget_fit(layout, { 100, 100 }, { 15, 35 })
end)
it("draw", function()
layout:draw("wibox", "cr", 100, 100)
utils.check_widgets_drawn({
{ first, 0, 0, 100, 42 },
{ third, 0, 58, 100, 42 },
{ second, 0, 42, 100, 15 },
it("layout", function()
assert.widget_layout(layout, { 100, 100 }, {
p(first, 0, 0, 100, 42),
p(third, 0, 58, 100, 42),
p(second, 0, 42, 100, 15),
})
end)
end)
@ -135,12 +127,11 @@ describe("wibox.layout.flex", function()
assert.widget_fit(layout, { 5, 100 }, { 5, 35 })
end)
it("draw", function()
layout:draw("wibox", "cr", 5, 100)
utils.check_widgets_drawn({
{ first, 0, 0, 5, 42 },
{ third, 0, 58, 5, 42 },
{ second, 0, 42, 5, 15 },
it("layout", function()
assert.widget_layout(layout, { 5, 100 }, {
p(first, 0, 0, 5, 42),
p(third, 0, 58, 5, 42),
p(second, 0, 42, 5, 15),
})
end)
end)
@ -150,12 +141,11 @@ describe("wibox.layout.flex", function()
assert.widget_fit(layout, { 100, 20 }, { 15, 20 })
end)
it("draw", function()
layout:draw("wibox", "cr", 100, 20)
utils.check_widgets_drawn({
{ first, 0, 0, 100, 2 },
{ third, 0, 18, 100, 2 },
{ second, 0, 2, 100, 15 },
it("layout", function()
assert.widget_layout(layout, { 100, 20 }, {
p(first, 0, 0, 100, 2),
p(third, 0, 18, 100, 2),
p(second, 0, 2, 100, 15),
})
end)
end)
@ -173,9 +163,8 @@ describe("wibox.layout.flex", function()
assert.widget_fit(layout, { 10, 10 }, { 0, 0 })
end)
it("empty layout draw", function()
layout:draw(nil, nil, 0, 0)
utils.check_widgets_drawn({})
it("empty layout layout", function()
assert.widget_layout(layout, { 0, 0 }, {})
end)
describe("with widgets", function()
@ -196,12 +185,11 @@ describe("wibox.layout.flex", function()
assert.widget_fit(layout, { 100, 100 }, { 15, 35 })
end)
it("draw", function()
layout:draw("wibox", "cr", 100, 100)
utils.check_widgets_drawn({
{ first, 0, 0, 100, 10 },
{ third, 0, 90, 100, 10 },
{ second, 0, 10, 100, 80 },
it("layout", function()
assert.widget_layout(layout, { 100, 100 }, {
p(first, 0, 0, 100, 10),
p(third, 0, 90, 100, 10),
p(second, 0, 10, 100, 80),
})
end)
end)
@ -211,12 +199,11 @@ describe("wibox.layout.flex", function()
assert.widget_fit(layout, { 5, 100 }, { 5, 35 })
end)
it("draw", function()
layout:draw("wibox", "cr", 5, 100)
utils.check_widgets_drawn({
{ first, 0, 0, 5, 10 },
{ third, 0, 90, 5, 10 },
{ second, 0, 10, 5, 80 },
it("layout", function()
assert.widget_layout(layout, { 5, 100 }, {
p(first, 0, 0, 5, 10),
p(third, 0, 90, 5, 10),
p(second, 0, 10, 5, 80),
})
end)
end)
@ -226,12 +213,10 @@ describe("wibox.layout.flex", function()
assert.widget_fit(layout, { 100, 20 }, { 15, 20 })
end)
it("draw", function()
layout:draw("wibox", "cr", 100, 20)
--- XXX: Shouldn't this also draw part of the second widget?
utils.check_widgets_drawn({
{ first, 0, 0, 100, 10 },
{ third, 0, 10, 100, 10 },
it("layout", function()
assert.widget_layout(layout, { 100, 20 }, {
p(first, 0, 0, 100, 10),
p(third, 0, 10, 100, 10),
})
end)
end)

46
spec/wibox/test_utils.lua
View File

@ -5,6 +5,7 @@
local object = require("gears.object")
local cache = require("gears.cache")
local matrix_equals = require("gears.matrix").equals
local wbase = require("wibox.widget.base")
local lbase = require("wibox.layout.base")
local say = require("say")
@ -12,7 +13,7 @@ local assert = require("luassert")
local spy = require("luassert.spy")
local stub = require("luassert.stub")
local real_draw_widget = lbase.draw_widget
local real_draw_widget = wbase.draw_widget
local widgets_drawn = nil
-- This function would reject stubbed widgets
@ -29,7 +30,7 @@ end
-- {{{ Own widget-based assertions
local function widget_fit(state, arguments)
if #arguments ~= 3 then
return false
error("Have " .. #arguments .. " arguments, but need 3")
end
local widget = arguments[1]
@ -52,6 +53,47 @@ local function widget_fit(state, arguments)
end
say:set("assertion.widget_fit.positive", "Offering (%s, %s) to widget and expected (%s, %s), but got (%s, %s)")
assert:register("assertion", "widget_fit", widget_fit, "assertion.widget_fit.positive", "assertion.widget_fit.positive")
local function widget_layout(state, arguments)
if #arguments ~= 3 then
error("Have " .. #arguments .. " arguments, but need 3")
end
local widget = arguments[1]
local given = arguments[2]
local expected = arguments[3]
local children = widget.layout and widget:layout({ "fake context" }, given[1], given[2]) or {}
local fits = true
if #children ~= #expected then
fits = false
else
for i = 1, #children do
local child, expected = children[i], expected[i]
if child._widget ~= expected._widget or
child._width ~= expected._width or
child._height ~= expected._height or
not matrix_equals(child._matrix, expected._matrix) then
fits = false
break
end
end
end
if state.mod == fits then
return true
end
-- For proper error message, mess with the arguments
arguments[1] = expected
arguments[2] = children
arguments[3] = given[1]
arguments[4] = given[2]
return false
end
say:set("assertion.widget_layout.positive", "Expected:\n%s\nbut got:\n%s\nwhen offering (%s, %s) to widget")
assert:register("assertion", "widget_layout", widget_layout, "assertion.widget_layout.positive", "assertion.widget_layout.positive")
-- }}}
return {