Module: Snarl::SnarlAPI

Extended by:
DL::Importable
Included in:
Snarl
Defined in:
lib/snarl.rb

Overview

This is the lowlevel API implemenation using DL and a few handy constants from the snarl api and the Win32 API Note that I have jump through some hoops to get the array of characters to work corretly – if you know a better way please send me ([email protected]) a note.

Constant Summary collapse

SNARL_SHOW = 
1
SNARL_HIDE = 
2
SNARL_UPDATE = 
3
SNARL_IS_VISIBLE = 
4
SNARL_GET_VERSION = 
5
SNARL_REGISTER_CONFIG_WINDOW = 
6
SNARL_REVOKE_CONFIG_WINDOW = 
7
SNARL_TEXT_LENGTH = 
1024
WM_COPYDATA = 
0x4a
SnarlStruct = 
struct [
  "int cmd",
  "long id",
  "long timeout",
  "long data2",
  "char title[#{SNARL_TEXT_LENGTH}]",
  "char text[#{SNARL_TEXT_LENGTH}]", 
  "char icon[#{SNARL_TEXT_LENGTH}]",                     
]
CopyDataStruct = 
struct [
  "long dwData",
  "long cbData",
  "void* lpData",
]

Class Method Summary collapse

Class Method Details

.send(ss) ⇒ Object

Send the structure off to snarl, the routine will return (if everything goes well) the result of SendMessage which has an overloaded meaning based upon the cmd being sent



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# File 'lib/snarl.rb', line 60

def self.send(ss)
  if isWindow(hwnd = findWindow(nil, 'Snarl'))
    cd = CopyDataStruct.malloc
    cd.dwData = 2
    cd.cbData = ss.size
    cd.lpData = ss.to_ptr
    sendMessage(hwnd, WM_COPYDATA, 0, cd.to_ptr)
  end
end

.to_cha(str) ⇒ Object

character array hoop jumping, we take the passed string and convert it into an array of integers, padded out to the correct length to_cha –> to character array I do this as it seems necessary to fit the DL API, if there is a better way please let me know



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# File 'lib/snarl.rb', line 52

def self.to_cha(str)
  result = str.split(/(.)/).map { |ch| ch[0] }.compact
  result + Array.new(SNARL_TEXT_LENGTH - result.size, 0)
end