248 lines
7.3 KiB
Lua
248 lines
7.3 KiB
Lua
---------------------------------------------------------------------------
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--- A progressbar widget.
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--
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--@DOC_wibox_widget_defaults_progressbar_EXAMPLE@
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-- @author Julien Danjou <julien@danjou.info>
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-- @copyright 2009 Julien Danjou
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-- @release @AWESOME_VERSION@
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-- @classmod wibox.widget.progressbar
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---------------------------------------------------------------------------
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local setmetatable = setmetatable
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local ipairs = ipairs
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local math = math
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local base = require("wibox.widget.base")
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local color = require("gears.color")
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local beautiful = require("beautiful")
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local progressbar = { mt = {} }
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local data = setmetatable({}, { __mode = "k" })
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--- Set the progressbar border color.
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-- If the value is nil, no border will be drawn.
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--
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-- @function set_border_color
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-- @param progressbar The progressbar.
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-- @param color The border color to set.
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--- Set the progressbar foreground color.
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--
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-- @function set_color
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-- @param progressbar The progressbar.
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-- @param color The progressbar color.
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--- Set the progressbar background color.
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--
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-- @function set_background_color
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-- @param progressbar The progressbar.
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-- @param color The progressbar background color.
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--- Set the progressbar to draw vertically. Default is false.
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--
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-- @function set_vertical
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-- @param progressbar The progressbar.
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-- @param vertical A boolean value.
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--- Set the progressbar to draw ticks. Default is false.
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--
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-- @function set_ticks
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-- @param progressbar The progressbar.
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-- @param ticks A boolean value.
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--- Set the progressbar ticks gap.
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--
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-- @function set_ticks_gap
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-- @param progressbar The progressbar.
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-- @param value The value.
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--- Set the progressbar ticks size.
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--
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-- @function set_ticks_size
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-- @param progressbar The progressbar.
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-- @param value The value.
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--- Set the maximum value the progressbar should handle.
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--
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-- @function set_max_value
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-- @param progressbar The progressbar.
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-- @param value The value.
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--- The progressbar background color.
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-- @beautiful beautiful.graph_bg
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--- The progressbar foreground color.
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-- @beautiful beautiful.graph_fg
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--- The progressbar border color.
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-- @beautiful beautiful.graph_border_color
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local properties = { "width", "height", "border_color",
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"color", "background_color",
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"vertical", "value", "max_value",
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"ticks", "ticks_gap", "ticks_size" }
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function progressbar.draw(pbar, _, cr, width, height)
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local ticks_gap = data[pbar].ticks_gap or 1
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local ticks_size = data[pbar].ticks_size or 4
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-- We want one pixel wide lines
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cr:set_line_width(1)
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local value = data[pbar].value
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local max_value = data[pbar].max_value
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if value >= 0 then
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value = value / max_value
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end
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local over_drawn_width = width
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local over_drawn_height = height
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local border_width = 0
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local col = data[pbar].border_color or beautiful.progressbar_border_color
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if col then
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-- Draw border
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cr:rectangle(0.5, 0.5, width - 1, height - 1)
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cr:set_source(color(col))
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cr:stroke()
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over_drawn_width = width - 2 -- remove 2 for borders
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over_drawn_height = height - 2 -- remove 2 for borders
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border_width = 1
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end
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cr:rectangle(border_width, border_width,
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over_drawn_width, over_drawn_height)
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cr:set_source(color(data[pbar].color or beautiful.progressbar_fg or "#ff0000"))
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cr:fill()
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-- Cover the part that is not set with a rectangle
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if data[pbar].vertical then
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local rel_height = over_drawn_height * (1 - value)
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cr:rectangle(border_width,
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border_width,
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over_drawn_width,
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rel_height)
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cr:set_source(color(data[pbar].background_color or beautiful.progressbar_bg or "#000000aa"))
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cr:fill()
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-- Place smaller pieces over the gradient if ticks are enabled
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if data[pbar].ticks then
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for i=0, height / (ticks_size+ticks_gap)-border_width do
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local rel_offset = over_drawn_height / 1 - (ticks_size+ticks_gap) * i
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if rel_offset >= rel_height then
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cr:rectangle(border_width,
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rel_offset,
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over_drawn_width,
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ticks_gap)
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end
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end
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cr:set_source(color(data[pbar].background_color or beautiful.progressbar_bg or "#000000aa"))
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cr:fill()
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end
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else
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local rel_x = over_drawn_width * value
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cr:rectangle(border_width + rel_x,
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border_width,
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over_drawn_width - rel_x,
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over_drawn_height)
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cr:set_source(color(data[pbar].background_color or "#000000aa"))
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cr:fill()
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if data[pbar].ticks then
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for i=0, width / (ticks_size+ticks_gap)-border_width do
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local rel_offset = over_drawn_width / 1 - (ticks_size+ticks_gap) * i
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if rel_offset <= rel_x then
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cr:rectangle(rel_offset,
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border_width,
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ticks_gap,
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over_drawn_height)
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end
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end
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cr:set_source(color(data[pbar].background_color or "#000000aa"))
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cr:fill()
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end
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end
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end
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function progressbar.fit(pbar)
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return data[pbar].width, data[pbar].height
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end
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--- Set the progressbar value.
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-- @param value The progress bar value between 0 and 1.
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function progressbar:set_value(value)
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value = value or 0
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local max_value = data[self].max_value
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data[self].value = math.min(max_value, math.max(0, value))
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self:emit_signal("widget::redraw_needed")
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return self
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end
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--- Set the progressbar height.
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-- @param height The height to set.
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function progressbar:set_height(height)
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data[self].height = height
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self:emit_signal("widget::layout_changed")
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return self
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end
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--- Set the progressbar width.
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-- @param width The width to set.
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function progressbar:set_width(width)
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data[self].width = width
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self:emit_signal("widget::layout_changed")
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return self
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end
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-- Build properties function
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for _, prop in ipairs(properties) do
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if not progressbar["set_" .. prop] then
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progressbar["set_" .. prop] = function(pbar, value)
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data[pbar][prop] = value
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pbar:emit_signal("widget::redraw_needed")
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return pbar
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end
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end
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end
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--- Create a progressbar widget.
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-- @param args Standard widget() arguments. You should add width and height
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-- key to set progressbar geometry.
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-- @return A progressbar widget.
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-- @function wibox.widget.progressbar
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function progressbar.new(args)
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args = args or {}
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local width = args.width or 100
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local height = args.height or 20
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args.type = "imagebox"
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local pbar = base.make_widget()
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data[pbar] = { width = width, height = height, value = 0, max_value = 1 }
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-- Set methods
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for _, prop in ipairs(properties) do
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pbar["set_" .. prop] = progressbar["set_" .. prop]
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end
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pbar.draw = progressbar.draw
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pbar.fit = progressbar.fit
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return pbar
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end
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function progressbar.mt:__call(...)
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return progressbar.new(...)
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end
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--@DOC_widget_COMMON@
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--@DOC_object_COMMON@
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return setmetatable(progressbar, progressbar.mt)
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-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
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