491 lines
15 KiB
Lua
491 lines
15 KiB
Lua
---------------------------------------------------------------------------
|
|
-- A container capable of changing the background color, foreground color and
|
|
-- widget shape.
|
|
--
|
|
--@DOC_wibox_container_defaults_background_EXAMPLE@
|
|
-- @author Uli Schlachter
|
|
-- @copyright 2010 Uli Schlachter
|
|
-- @containermod wibox.container.background
|
|
-- @supermodule wibox.widget.base
|
|
---------------------------------------------------------------------------
|
|
|
|
local base = require("wibox.widget.base")
|
|
local color = require("gears.color")
|
|
local surface = require("gears.surface")
|
|
local beautiful = require("beautiful")
|
|
local cairo = require("lgi").cairo
|
|
local gtable = require("gears.table")
|
|
local gshape = require("gears.shape")
|
|
local gdebug = require("gears.debug")
|
|
local setmetatable = setmetatable
|
|
local type = type
|
|
local unpack = unpack or table.unpack -- luacheck: globals unpack (compatibility with Lua 5.1)
|
|
|
|
local background = { mt = {} }
|
|
|
|
-- The Cairo SVG backend doesn't support surface as patterns correctly.
|
|
-- The result is both glitchy and blocky. It is also impossible to introspect.
|
|
-- Calling this function replace the normal code path is a "less correct", but
|
|
-- more widely compatible version.
|
|
function background._use_fallback_algorithm()
|
|
background.before_draw_children = function(self, _, cr, width, height)
|
|
local bw = self._private.shape_border_width or 0
|
|
local shape = self._private.shape or gshape.rectangle
|
|
|
|
if bw > 0 then
|
|
cr:translate(bw, bw)
|
|
width, height = width - 2*bw, height - 2*bw
|
|
end
|
|
|
|
shape(cr, width, height)
|
|
|
|
if bw > 0 then
|
|
cr:save() --Save to avoid messing with the original source
|
|
cr:set_line_width(bw)
|
|
cr:set_source(color(self._private.shape_border_color or self._private.foreground or beautiful.fg_normal))
|
|
cr:stroke_preserve()
|
|
cr:restore()
|
|
end
|
|
|
|
if self._private.background then
|
|
cr:save() --Save to avoid messing with the original source
|
|
cr:set_source(self._private.background)
|
|
cr:fill_preserve()
|
|
cr:restore()
|
|
end
|
|
|
|
cr:translate(-bw, -bw)
|
|
cr:clip()
|
|
|
|
if self._private.foreground then
|
|
cr:set_source(self._private.foreground)
|
|
end
|
|
end
|
|
background.after_draw_children = function(self, _, cr, width, height)
|
|
local bw = self._private.shape_border_width or 0
|
|
local shape = self._private.shape or gshape.rectangle
|
|
|
|
if bw > 0 then
|
|
cr:save()
|
|
cr:translate(bw, bw)
|
|
width, height = width - 2*bw, height - 2*bw
|
|
shape(cr, width, height)
|
|
cr:set_line_width(bw)
|
|
cr:set_source(color(self._private.shape_border_color or self._private.foreground or beautiful.fg_normal))
|
|
cr:stroke()
|
|
cr:restore()
|
|
end
|
|
end
|
|
end
|
|
|
|
-- Make sure a surface pattern is freed *now*
|
|
local function dispose_pattern(pattern)
|
|
local status, s = pattern:get_surface()
|
|
if status == "SUCCESS" then
|
|
s:finish()
|
|
end
|
|
end
|
|
|
|
-- Prepare drawing the children of this widget
|
|
function background:before_draw_children(context, cr, width, height)
|
|
local bw = self._private.shape_border_width or 0
|
|
local shape = self._private.shape or (bw > 0 and gshape.rectangle or nil)
|
|
|
|
-- Redirect drawing to a temporary surface if there is a shape
|
|
if shape then
|
|
cr:push_group_with_content(cairo.Content.COLOR_ALPHA)
|
|
end
|
|
|
|
-- Draw the background
|
|
if self._private.background then
|
|
cr:save()
|
|
cr:set_source(self._private.background)
|
|
cr:rectangle(0, 0, width, height)
|
|
cr:fill()
|
|
cr:restore()
|
|
end
|
|
if self._private.bgimage then
|
|
cr:save()
|
|
if type(self._private.bgimage) == "function" then
|
|
self._private.bgimage(context, cr, width, height,unpack(self._private.bgimage_args))
|
|
else
|
|
local pattern = cairo.Pattern.create_for_surface(self._private.bgimage)
|
|
cr:set_source(pattern)
|
|
cr:rectangle(0, 0, width, height)
|
|
cr:fill()
|
|
end
|
|
cr:restore()
|
|
end
|
|
|
|
if self._private.foreground then
|
|
cr:set_source(self._private.foreground)
|
|
end
|
|
end
|
|
|
|
-- Draw the border
|
|
function background:after_draw_children(_, cr, width, height)
|
|
local bw = self._private.shape_border_width or 0
|
|
local shape = self._private.shape or (bw > 0 and gshape.rectangle or nil)
|
|
|
|
if not shape then
|
|
return
|
|
end
|
|
|
|
-- Okay, there is a shape. Get it as a path.
|
|
|
|
cr:translate(bw, bw)
|
|
shape(cr, width - 2*bw, height - 2*bw, unpack(self._private.shape_args or {}))
|
|
cr:translate(-bw, -bw)
|
|
|
|
if bw > 0 then
|
|
-- Now we need to do a border, somehow. We begin with another
|
|
-- temporary surface.
|
|
cr:push_group_with_content(cairo.Content.ALPHA)
|
|
|
|
-- Mark everything as "this is border"
|
|
cr:set_source_rgba(0, 0, 0, 1)
|
|
cr:paint()
|
|
|
|
-- Now remove the inside of the shape to get just the border
|
|
cr:set_operator(cairo.Operator.SOURCE)
|
|
cr:set_source_rgba(0, 0, 0, 0)
|
|
cr:fill_preserve()
|
|
|
|
local mask = cr:pop_group()
|
|
-- Now actually draw the border via the mask we just created.
|
|
cr:set_source(color(self._private.shape_border_color or self._private.foreground or beautiful.fg_normal))
|
|
cr:set_operator(cairo.Operator.SOURCE)
|
|
cr:mask(mask)
|
|
|
|
dispose_pattern(mask)
|
|
end
|
|
|
|
-- We now have the right content in a temporary surface. Copy it to the
|
|
-- target surface. For this, we need another mask
|
|
cr:push_group_with_content(cairo.Content.ALPHA)
|
|
|
|
-- Draw the border with 2 * border width (this draws both
|
|
-- inside and outside, only half of it is outside)
|
|
cr.line_width = 2 * bw
|
|
cr:set_source_rgba(0, 0, 0, 1)
|
|
cr:stroke_preserve()
|
|
|
|
-- Now fill the whole inside so that it is also include in the mask
|
|
cr:fill()
|
|
|
|
local mask = cr:pop_group()
|
|
local source = cr:pop_group() -- This pops what was pushed in before_draw_children
|
|
|
|
-- This now draws the content of the background widget to the actual
|
|
-- target, but only the part that is inside the mask
|
|
cr:set_operator(cairo.Operator.OVER)
|
|
cr:set_source(source)
|
|
cr:mask(mask)
|
|
|
|
dispose_pattern(mask)
|
|
dispose_pattern(source)
|
|
end
|
|
|
|
-- Layout this widget
|
|
function background:layout(_, width, height)
|
|
if self._private.widget then
|
|
local bw = self._private.border_strategy == "inner" and
|
|
self._private.shape_border_width or 0
|
|
|
|
return { base.place_widget_at(
|
|
self._private.widget, bw, bw, width-2*bw, height-2*bw
|
|
) }
|
|
end
|
|
end
|
|
|
|
-- Fit this widget into the given area
|
|
function background:fit(context, width, height)
|
|
if not self._private.widget then
|
|
return 0, 0
|
|
end
|
|
|
|
local bw = self._private.border_strategy == "inner" and
|
|
self._private.shape_border_width or 0
|
|
|
|
local w, h = base.fit_widget(
|
|
self, context, self._private.widget, width - 2*bw, height - 2*bw
|
|
)
|
|
|
|
return w+2*bw, h+2*bw
|
|
end
|
|
|
|
--- The widget displayed in the background widget.
|
|
-- @property widget
|
|
-- @tparam widget widget The widget to be disaplayed inside of the background
|
|
-- area.
|
|
-- @interface container
|
|
|
|
background.set_widget = base.set_widget_common
|
|
|
|
function background:get_widget()
|
|
return self._private.widget
|
|
end
|
|
|
|
function background:get_children()
|
|
return {self._private.widget}
|
|
end
|
|
|
|
function background:set_children(children)
|
|
self:set_widget(children[1])
|
|
end
|
|
|
|
--- The background color/pattern/gradient to use.
|
|
--
|
|
--@DOC_wibox_container_background_bg_EXAMPLE@
|
|
--
|
|
-- @property bg
|
|
-- @tparam color bg A color string, pattern or gradient
|
|
-- @see gears.color
|
|
-- @propemits true false
|
|
|
|
function background:set_bg(bg)
|
|
if bg then
|
|
self._private.background = color(bg)
|
|
else
|
|
self._private.background = nil
|
|
end
|
|
self:emit_signal("widget::redraw_needed")
|
|
self:emit_signal("property::bg", bg)
|
|
end
|
|
|
|
function background:get_bg()
|
|
return self._private.background
|
|
end
|
|
|
|
--- The foreground (text) color/pattern/gradient to use.
|
|
--
|
|
--@DOC_wibox_container_background_fg_EXAMPLE@
|
|
--
|
|
-- @property fg
|
|
-- @tparam color fg A color string, pattern or gradient
|
|
-- @propemits true false
|
|
-- @see gears.color
|
|
|
|
function background:set_fg(fg)
|
|
if fg then
|
|
self._private.foreground = color(fg)
|
|
else
|
|
self._private.foreground = nil
|
|
end
|
|
self:emit_signal("widget::redraw_needed")
|
|
self:emit_signal("property::fg", fg)
|
|
end
|
|
|
|
function background:get_fg()
|
|
return self._private.foreground
|
|
end
|
|
|
|
--- The background shape.
|
|
--
|
|
-- Use `set_shape` to set additional shape paramaters.
|
|
--
|
|
--@DOC_wibox_container_background_shape_EXAMPLE@
|
|
--
|
|
-- @property shape
|
|
-- @tparam gears.shape|function shape A function taking a context, width and height as arguments
|
|
-- @see gears.shape
|
|
-- @see set_shape
|
|
|
|
--- Set the background shape.
|
|
--
|
|
-- Any other arguments will be passed to the shape function.
|
|
--
|
|
-- @method set_shape
|
|
-- @tparam gears.shape|function shape A function taking a context, width and height as arguments
|
|
-- @propemits true false
|
|
-- @see gears.shape
|
|
-- @see shape
|
|
function background:set_shape(shape, ...)
|
|
local args = {...}
|
|
|
|
if shape == self._private.shape and #args == 0 then return end
|
|
|
|
self._private.shape = shape
|
|
self._private.shape_args = {...}
|
|
self:emit_signal("widget::redraw_needed")
|
|
self:emit_signal("property::shape", shape)
|
|
end
|
|
|
|
function background:get_shape()
|
|
return self._private.shape
|
|
end
|
|
|
|
--- When a `shape` is set, also draw a border.
|
|
--
|
|
-- See `wibox.container.background.shape` for an usage example.
|
|
--
|
|
-- @deprecatedproperty shape_border_width
|
|
-- @tparam number width The border width
|
|
-- @renamedin 4.4 border_width
|
|
-- @see border_width
|
|
|
|
--- Add a border of a specific width.
|
|
--
|
|
-- If the shape is set, the border will also be shaped.
|
|
--
|
|
-- See `wibox.container.background.shape` for an usage example.
|
|
-- @property border_width
|
|
-- @tparam[opt=0] number width The border width.
|
|
-- @propemits true false
|
|
-- @introducedin 4.4
|
|
-- @see border_color
|
|
|
|
function background:set_border_width(width)
|
|
if self._private.shape_border_width == width then return end
|
|
|
|
self._private.shape_border_width = width
|
|
self:emit_signal("widget::redraw_needed")
|
|
self:emit_signal("property::border_width", width)
|
|
end
|
|
|
|
function background:get_border_width()
|
|
return self._private.shape_border_width
|
|
end
|
|
|
|
function background.get_shape_border_width(...)
|
|
gdebug.deprecate("Use `border_width` instead of `shape_border_width`",
|
|
{deprecated_in=5})
|
|
|
|
return background.get_border_width(...)
|
|
end
|
|
|
|
function background.set_shape_border_width(...)
|
|
gdebug.deprecate("Use `border_width` instead of `shape_border_width`",
|
|
{deprecated_in=5})
|
|
|
|
background.set_border_width(...)
|
|
end
|
|
|
|
--- When a `shape` is set, also draw a border.
|
|
--
|
|
-- See `wibox.container.background.shape` for an usage example.
|
|
--
|
|
-- @deprecatedproperty shape_border_color
|
|
-- @usebeautiful beautiful.fg_normal Fallback when 'fg' and `border_color` aren't set.
|
|
-- @tparam[opt=self._private.foreground] color fg The border color, pattern or gradient
|
|
-- @renamedin 4.4 border_color
|
|
-- @see gears.color
|
|
-- @see border_color
|
|
|
|
--- Set the color for the border.
|
|
--
|
|
-- See `wibox.container.background.shape` for an usage example.
|
|
-- @property border_color
|
|
-- @tparam[opt=self._private.foreground] color fg The border color, pattern or gradient
|
|
-- @propemits true false
|
|
-- @usebeautiful beautiful.fg_normal Fallback when 'fg' and `border_color` aren't set.
|
|
-- @introducedin 4.4
|
|
-- @see gears.color
|
|
-- @see border_width
|
|
|
|
function background:set_border_color(fg)
|
|
if self._private.shape_border_color == fg then return end
|
|
|
|
self._private.shape_border_color = fg
|
|
self:emit_signal("widget::redraw_needed")
|
|
self:emit_signal("property::border_color", fg)
|
|
end
|
|
|
|
function background:get_border_color()
|
|
return self._private.shape_border_color
|
|
end
|
|
|
|
function background.get_shape_border_color(...)
|
|
gdebug.deprecate("Use `border_color` instead of `shape_border_color`",
|
|
{deprecated_in=5})
|
|
|
|
return background.get_border_color(...)
|
|
end
|
|
|
|
function background.set_shape_border_color(...)
|
|
gdebug.deprecate("Use `border_color` instead of `shape_border_color`",
|
|
{deprecated_in=5})
|
|
|
|
background.set_border_color(...)
|
|
end
|
|
|
|
function background:set_shape_clip(value)
|
|
if value then return end
|
|
require("gears.debug").print_warning("shape_clip property of background container was removed."
|
|
.. " Use wibox.layout.stack instead if you want shape_clip=false.")
|
|
end
|
|
|
|
function background:get_shape_clip()
|
|
require("gears.debug").print_warning("shape_clip property of background container was removed."
|
|
.. " Use wibox.layout.stack instead if you want shape_clip=false.")
|
|
return true
|
|
end
|
|
|
|
--- How the border width affects the contained widget.
|
|
--
|
|
-- The valid values are:
|
|
--
|
|
-- * *none*: Just apply the border, do not affect the content size (default).
|
|
-- * *inner*: Squeeze the size of the content by the border width.
|
|
--
|
|
-- @property border_strategy
|
|
-- @tparam[opt="none"] string border_strategy
|
|
|
|
function background:set_border_strategy(value)
|
|
self._private.border_strategy = value
|
|
self:emit_signal("widget::layout_changed")
|
|
self:emit_signal("property::border_strategy", value)
|
|
end
|
|
|
|
--- The background image to use.
|
|
--
|
|
-- If `image` is a function, it will be called with `(context, cr, width, height)`
|
|
-- as arguments. Any other arguments passed to this method will be appended.
|
|
--
|
|
-- @property bgimage
|
|
-- @tparam string|surface|function image A background image or a function
|
|
-- @see gears.surface
|
|
|
|
function background:set_bgimage(image, ...)
|
|
self._private.bgimage = type(image) == "function" and image or surface.load(image)
|
|
self._private.bgimage_args = {...}
|
|
self:emit_signal("widget::redraw_needed")
|
|
self:emit_signal("property::bgimage", image)
|
|
end
|
|
|
|
function background:get_bgimage()
|
|
return self._private.bgimage
|
|
end
|
|
|
|
--- Returns a new background container.
|
|
--
|
|
-- A background container applies a background and foreground color
|
|
-- to another widget.
|
|
--
|
|
-- @tparam[opt] widget widget The widget to display.
|
|
-- @tparam[opt] color bg The background to use for that widget.
|
|
-- @tparam[opt] gears.shape|function shape A `gears.shape` compatible shape function
|
|
-- @constructorfct wibox.container.background
|
|
local function new(widget, bg, shape)
|
|
local ret = base.make_widget(nil, nil, {
|
|
enable_properties = true,
|
|
})
|
|
|
|
gtable.crush(ret, background, true)
|
|
|
|
ret._private.shape = shape
|
|
|
|
ret:set_widget(widget)
|
|
ret:set_bg(bg)
|
|
|
|
return ret
|
|
end
|
|
|
|
function background.mt:__call(...)
|
|
return new(...)
|
|
end
|
|
|
|
return setmetatable(background, background.mt)
|
|
|
|
-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
|