75 lines
2.9 KiB
Lua
75 lines
2.9 KiB
Lua
---------------------------------------------------------------------------
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-- @author Uli Schlachter
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-- @copyright 2010 Uli Schlachter
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-- @classmod wibox.widget
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---------------------------------------------------------------------------
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local cairo = require("lgi").cairo
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local hierarchy = require("wibox.hierarchy")
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local widget = {
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base = require("wibox.widget.base");
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textbox = require("wibox.widget.textbox");
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imagebox = require("wibox.widget.imagebox");
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background = require("wibox.widget.background");
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systray = require("wibox.widget.systray");
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textclock = require("wibox.widget.textclock");
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progressbar = require("wibox.widget.progressbar");
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graph = require("wibox.widget.graph");
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checkbox = require("wibox.widget.checkbox");
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piechart = require("wibox.widget.piechart");
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slider = require("wibox.widget.slider");
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}
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setmetatable(widget, {
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__call = function(_, args)
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return widget.base.make_widget_declarative(args)
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end
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})
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--- Draw a widget directly to a given cairo context.
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-- This function creates a temporary `wibox.hierarchy` instance and uses that to
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-- draw the given widget once to the given cairo context.
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-- @tparam widget wdg A widget to draw
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-- @tparam cairo_context cr The cairo context to draw the widget on
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-- @tparam number width The width of the widget
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-- @tparam number height The height of the widget
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-- @tparam[opt={dpi=96}] table context The context information to give to the widget.
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function widget.draw_to_cairo_context(wdg, cr, width, height, context)
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local function no_op() end
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context = context or {dpi=96}
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local h = hierarchy.new(context, wdg, width, height, no_op, no_op, {})
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h:draw(context, cr)
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end
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--- Create an SVG file showing this widget.
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-- @tparam widget wdg A widget
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-- @tparam string path The output file path
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-- @tparam number width The surface width
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-- @tparam number height The surface height
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-- @tparam[opt={dpi=96}] table context The context information to give to the widget.
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function widget.draw_to_svg_file(wdg, path, width, height, context)
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local img = cairo.SvgSurface.create(path, width, height)
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local cr = cairo.Context(img)
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widget.draw_to_cairo_context(wdg, cr, width, height, context)
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img:finish()
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end
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--- Create a cairo image surface showing this widget.
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-- @tparam widget wdg A widget
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-- @tparam number width The surface width
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-- @tparam number height The surface height
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-- @param[opt=cairo.Format.ARGB32] format The surface format
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-- @tparam[opt={dpi=96}] table context The context information to give to the widget.
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-- @return The cairo surface
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function widget.draw_to_image_surface(wdg, width, height, format, context)
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local img = cairo.ImageSurface(format or cairo.Format.ARGB32, width, height)
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local cr = cairo.Context(img)
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widget.draw_to_cairo_context(wdg, cr, width, height, context)
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return img
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end
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return widget
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-- vim: filetype=lua:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:textwidth=80
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