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589b240360
We need an interface to be able to create/destroy/set/get the RsvgRectangle and RsvgDimensionData structs via Lua, which were missing or incomplete. Documentation was also missing, which has been updated.
188 lines
8.1 KiB
YAML
188 lines
8.1 KiB
YAML
# See README.md for details on doc processing.
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#
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# The `desc` field can be formatted with markdown, but please do not include
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# headings (lines beginning with `#`) in the `desc` field.
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#
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# The supported fields are:
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#
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# * `name`: the name of the thing
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# * `desc`: a markdown-formatted description of the thing
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# * `args`: optional list of arguments
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# * `default`: an optional default value, if applicable
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---
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desc: |-
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Conky features a Lua Programming API, and also ships with Lua bindings
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for some useful libraries. Note that the bindings require tolua++, which
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currently only compiles against Lua 5.1.
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To use Lua Conky, you first need to make sure you have a version of
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Conky with Lua support enabled (`conky -v` will report this).
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Conky defines certain global functions and variables which can be
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accessed from Lua code running in Conky. Scripts must first be loaded
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using the lua_load configuration option. You then call functions in Lua
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via Conky's $lua, $lua_read, and Lua hooks.
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Be careful when creating threaded objects through the Lua API. You could
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wind up with a whole bunch of threads running if a thread is created
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with each iteration.
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NOTE: In order to accommodate certain features in the cairo library's
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API, Conky will export a few additional functions for the creation of
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certain structures. These are documented below.
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values:
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- name: cairo_font_extents_t:create()
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desc: |-
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Call this function to return a new cairo_font_extents_t
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structure. A creation function for this structure is not provided
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by the cairo API.
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After calling this, you should use
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`tolua.takeownership(cfe)` on the return value to ensure ownership is
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passed properly.
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- name: cairo_font_extents_t:destroy(structure)
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desc: |-
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Call this function to free memory allocated by
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cairo_font_extents_t:create.
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You should call `tolua.releaseownership(cfe)` before calling this function to
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avoid double-frees, but only if you previously called
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`tolua.takeownership(cfe)`
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- name: cairo_matrix_t:create()
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desc: |-
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Call this function to return a new cairo_matrix_t structure.
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A creation function for this structure is not provided by the
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cairo API.
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After calling this, you should use
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`tolua.takeownership(cm)` on the return value to ensure ownership is
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passed properly.
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- name: cairo_matrix_t:destroy(structure)
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desc: |-
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Call this function to free memory allocated by
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cairo_matrix_t:create.
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You should call `tolua.releaseownership(cm)` before calling this function to
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avoid double-frees, but only if you previously called
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`tolua.takeownership(cm)`
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- name: cairo_text_extents_t:create()
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desc: |-
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Call this function to return a new cairo_text_extents_t
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structure. A creation function for this structure is not provided
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by the cairo API.
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After calling this, you should use
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`tolua.takeownership(cte)` on the return value to ensure ownership is
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passed properly.
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- name: cairo_text_extents_t:destroy(structure)
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desc: |-
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Call this function to free memory allocated by
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cairo_text_extents_t:create.
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You should call `tolua.releaseownership(cte)` before calling this function to
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avoid double-frees, but only if you previously called
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`tolua.takeownership(cte)`
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- name: conky_build_arch
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desc: |-
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A string containing the build architecture for this
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particular instance of Conky.
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- name: conky_build_date
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desc: |-
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A string containing the build date for this particular
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instance of Conky.
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- name: conky_build_info
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desc: |-
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A string containing the build info for this particular
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instance of Conky, including the version, build date, and
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architecture.
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- name: conky_config
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desc: |-
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A string containing the path of the current Conky
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configuration file.
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- name: conky_info
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desc: |-
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This table contains some information about Conky's internal
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data. The following table describes the values contained:
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| Key | Value |
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|-----------------|---------------------------------------|
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| update_interval | Conky's update interval (in seconds). |
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- name: conky_parse(string)
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desc: |-
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This function takes a string that is evaluated as per
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Conky's TEXT section, and then returns a string with the
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result.
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- name: conky_set_update_interval(number)
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desc: |-
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Sets Conky's update interval (in seconds) to
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'number'.
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- name: conky_version
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desc: |-
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A string containing the version of the current instance of
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Conky.
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- name: conky_window
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desc: |-
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This table contains some information about Conky's window.
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The following table describes the values contained:
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| Key | Value |
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|---------------------|---------------------------------------------------------------------------------|
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| drawable | Window's drawable (Xlib Drawable), requires Lua extras enabled at compile time. |
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| visual | Window's visual (Xlib Visual), requires Lua extras enabled at compile time. |
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| display | Window's display (Xlib Display), requires Lua extras enabled at compile time. |
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| width | Window width (in pixels). |
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| height | Window height (in pixels). |
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| border_inner_margin | Window's inner border margin (in pixels). |
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| border_outer_margin | Window's outer border margin (in pixels). |
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| border_width | Window's border width (in pixels). |
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| text_start_x | The x component of the starting coordinate of text drawing. |
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| text_start_y | The y component of the starting coordinate of text drawing. |
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| text_width | The width of the text drawing region. |
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| text_height | The height of the text drawing region. |
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NOTE: This table is only defined when X support is
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enabled.
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- name: RsvgRectangle:create()
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desc: |-
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Call this method to return a new RsvgRectangle
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structure. A creation function for this structure is not provided
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by the Rsvg API.
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After calling this, you should use `tolua.takeownership(rect)` on the return
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value to ensure ownership is passed properly.
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- name: RsvgRectangle:destroy()
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desc: |-
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Call this method to free memory allocated by
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`RsvgRectangle:create`.
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You should call `tolua.releaseownership(rect)` before calling this function to
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avoid double-frees, but only if you previously called
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`tolua.takeownership(rect)`
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- name: RsvgRectangle:set(x, y, width, height)
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desc: |-
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Sets the values of an existing RsvgRectangle.
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- name: RsvgRectangle:get()
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desc: |-
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Gets the values of an existing RsvgRectangle.
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- name: RsvgDimensionData:create()
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desc: |-
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Call this method to return a new RsvgDimensionData
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structure. A creation function for this structure is not provided
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by the Rsvg API.
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After calling this, you should use `tolua.takeownership(rect)` on the return
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value to ensure ownership is passed properly.
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- name: RsvgDimensionData:destroy()
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desc: |-
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Call this method to free memory allocated by
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`RsvgDimensionData:create`.
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You should call `tolua.releaseownership(dd)` before calling this function to
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avoid double-frees, but only if you previously called
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`tolua.takeownership(dd)`
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- name: RsvgDimensionData:set(x, y, width, height)
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desc: |-
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Sets the values of an existing RsvgDimensionData.
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- name: RsvgDimensionData:get()
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desc: |-
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Gets the values of an existing RsvgDimensionData.
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