981 lines
34 KiB
EmacsLisp
981 lines
34 KiB
EmacsLisp
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;;; pos-tip.el --- Show tooltip at point -*- coding: utf-8 -*-
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;; Copyright (C) 2010 S. Irie
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;; Author: S. Irie
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;; Maintainer: S. Irie
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;; Keywords: Tooltip
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;; Package-Version: 20150318.813
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(defconst pos-tip-version "0.4.6")
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;; This program is free software; you can redistribute it and/or
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;; modify it under the terms of the GNU General Public License as
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;; published by the Free Software Foundation; either version 2, or
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;; (at your option) any later version.
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;; It is distributed in the hope that it will be useful, but WITHOUT
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;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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;; or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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;; License for more details.
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;; You should have received a copy of the GNU General Public
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;; License along with this program; if not, write to the Free
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;; Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
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;; MA 02110-1301 USA
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;;; Commentary:
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;; The standard library tooltip.el provides the function for displaying
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;; a tooltip at mouse position which allows users to easily show it.
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;; However, locating tooltip at arbitrary buffer position in window
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;; is not easy. This program provides such function to be used by other
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;; frontend programs.
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;; This program is tested on GNU Emacs 22, 23 under X window system and
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;; Emacs 23 for MS-Windows.
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;;
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;; Installation:
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;;
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;; First, save this file as pos-tip.el and byte-compile in
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;; a directory that is listed in load-path.
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;;
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;; Put the following in your .emacs file:
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;;
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;; (require 'pos-tip)
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;;
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;; To use the full features of this program on MS-Windows,
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;; put the additional setting in .emacs file:
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;;
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;; (pos-tip-w32-max-width-height) ; Maximize frame temporarily
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;;
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;; or
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;;
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;; (pos-tip-w32-max-width-height t) ; Keep frame maximized
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;;
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;; Examples:
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;;
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;; We can display a tooltip at the current position by the following:
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;;
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;; (pos-tip-show "foo bar")
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;;
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;; If you'd like to specify the tooltip color, use an expression as:
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;;
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;; (pos-tip-show "foo bar" '("white" . "red"))
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;;
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;; Here, "white" and "red" are the foreground color and background
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;; color, respectively.
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;;; History:
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;; 2013-07-16 P. Kalinowski
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;; * Adjusted `pos-tip-show' to correctly set tooltip text foreground
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;; color when using custom color themes.
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;; * Version 0.4.6
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;;
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;; 2010-09-27 S. Irie
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;; * Simplified implementation of `pos-tip-window-system'
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;; * Version 0.4.5
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;;
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;; 2010-08-20 S. Irie
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;; * Changed to use `window-line-height' to calculate tooltip position
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;; * Changed `pos-tip-string-width-height' to ignore last empty line
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;; * Version 0.4.4
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;;
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;; 2010-07-25 S. Irie
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;; * Bug fix
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;; * Version 0.4.3
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;;
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;; 2010-06-09 S. Irie
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;; * Bug fix
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;; * Version 0.4.2
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;;
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;; 2010-06-04 S. Irie
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;; * Added support for text-scale-mode
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;; * Version 0.4.1
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;;
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;; 2010-05-04 S. Irie
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;; * Added functions:
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;; `pos-tip-x-display-width', `pos-tip-x-display-height'
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;; `pos-tip-normalize-natnum', `pos-tip-frame-relative-position'
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;; * Fixed the supports for multi-displays and multi-frames
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;; * Version 0.4.0
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;;
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;; 2010-04-29 S. Irie
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;; * Modified to avoid byte-compile warning
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;; * Bug fix
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;; * Version 0.3.6
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;;
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;; 2010-04-29 S. Irie
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;; * Renamed argument MAX-HEIGHT of `pos-tip-fill-string' to MAX-ROWS
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;; * Modified old FSF address
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;; * Version 0.3.5
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;;
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;; 2010-04-29 S. Irie
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;; * Modified `pos-tip-show' to truncate string exceeding display size
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;; * Added function `pos-tip-truncate-string'
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;; * Added optional argument MAX-ROWS to `pos-tip-split-string'
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;; * Added optional argument MAX-HEIGHT to `pos-tip-fill-string'
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;; * Version 0.3.4
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;;
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;; 2010-04-16 S. Irie
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;; * Changed `pos-tip-show' not to fill paragraph unless exceeding WIDTH
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;; * Version 0.3.3
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;;
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;; 2010-04-08 S. Irie
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;; * Bug fix
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;; * Version 0.3.2
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;;
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;; 2010-03-31 S. Irie
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;; * Bug fix
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;; * Version 0.3.1
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;;
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;; 2010-03-30 S. Irie
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;; * Added support for MS-Windows
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;; * Added option `pos-tip-use-relative-coordinates'
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;; * Bug fixes
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;; * Version 0.3.0
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;;
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;; 2010-03-23 S. Irie
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;; * Changed argument WORD-WRAP to JUSTIFY
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;; * Added optional argument SQUEEZE
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;; * Added function `pos-tip-fill-string'
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;; * Added option `pos-tip-tab-width' used to expand tab characters
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;; * Bug fixes
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;; * Version 0.2.0
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;;
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;; 2010-03-22 S. Irie
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;; * Added optional argument WORD-WRAP to `pos-tip-split-string'
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;; * Changed `pos-tip-show' to perform word wrap or kinsoku shori
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;; * Version 0.1.8
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;;
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;; 2010-03-20 S. Irie
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;; * Added optional argument DY
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;; * Bug fix
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;; * Modified docstrings
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;; * Version 0.1.7
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;;
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;; 2010-03-18 S. Irie
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;; * Added/modifed docstrings
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;; * Changed working buffer name to " *xwininfo*"
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;; * Version 0.1.6
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;;
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;; 2010-03-17 S. Irie
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;; * Fixed typos in docstrings
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;; * Version 0.1.5
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;;
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;; 2010-03-16 S. Irie
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;; * Added support for multi-display environment
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;; * Bug fix
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;; * Version 0.1.4
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;;
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;; 2010-03-16 S. Irie
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;; * Bug fix
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;; * Changed calculation for `x-max-tooltip-size'
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;; * Modified docstring
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;; * Version 0.1.3
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;;
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;; 2010-03-11 S. Irie
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;; * Modified commentary
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;; * Version 0.1.2
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;;
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;; 2010-03-11 S. Irie
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;; * Re-implemented `pos-tip-string-width-height'
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;; * Added indicator variable `pos-tip-upperside-p'
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;; * Version 0.1.1
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;;
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;; 2010-03-09 S. Irie
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;; * Re-implemented `pos-tip-show' (*incompatibly changed*)
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;; - Use frame default font
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;; - Automatically calculate tooltip pixel size
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;; - Added optional arguments: TIP-COLOR, MAX-WIDTH
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;; * Added utility functions:
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;; `pos-tip-split-string', `pos-tip-string-width-height'
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;; * Bug fixes
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;; * Version 0.1.0
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;;
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;; 2010-03-08 S. Irie
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;; * Added optional argument DX
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;; * Version 0.0.4
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;;
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;; 2010-03-08 S. Irie
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;; * Bug fix
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;; * Version 0.0.3
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;;
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;; 2010-03-08 S. Irie
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;; * Modified to move out mouse pointer
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;; * Version 0.0.2
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;;
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;; 2010-03-07 S. Irie
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;; * First release
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;; * Version 0.0.1
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;; ToDo:
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;;; Code:
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Settings
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defgroup pos-tip nil
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"Show tooltip at point"
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:group 'faces
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:prefix "pos-tip-")
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(defcustom pos-tip-border-width 1
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"Outer border width of pos-tip's tooltip."
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:type 'integer
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:group 'pos-tip)
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(defcustom pos-tip-internal-border-width 2
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"Text margin of pos-tip's tooltip."
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:type 'integer
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:group 'pos-tip)
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(defcustom pos-tip-foreground-color nil
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"Default foreground color of pos-tip's tooltip.
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When `nil', look up the foreground color of the `tooltip' face."
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:type '(choice (const :tag "Default" nil)
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string)
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:group 'pos-tip)
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(defcustom pos-tip-background-color nil
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"Default background color of pos-tip's tooltip.
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When `nil', look up the background color of the `tooltip' face."
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:type '(choice (const :tag "Default" nil)
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string)
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:group 'pos-tip)
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(defcustom pos-tip-tab-width nil
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"Tab width used for `pos-tip-split-string' and `pos-tip-fill-string'
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to expand tab characters. nil means use default value of `tab-width'."
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:type '(choice (const :tag "Default" nil)
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integer)
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:group 'pos-tip)
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(defcustom pos-tip-use-relative-coordinates nil
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"Non-nil means tooltip location is calculated as a coordinates
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relative to the top left corner of frame. In this case the tooltip
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will always be displayed within the frame.
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Note that this variable is automatically set to non-nil if absolute
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coordinates can't be obtained by `pos-tip-compute-pixel-position'."
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:type 'boolean
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:group 'pos-tip)
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; Functions
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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(defun pos-tip-window-system (&optional frame)
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"The name of the window system that FRAME is displaying through.
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The value is a symbol---for instance, 'x' for X windows.
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The value is nil if Emacs is using a text-only terminal.
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FRAME defaults to the currently selected frame."
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(let ((type (framep (or frame (selected-frame)))))
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(if type
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(and (not (eq type t))
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type)
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(signal 'wrong-type-argument (list 'framep frame)))))
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(defun pos-tip-normalize-natnum (object &optional n)
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"Return a Nth power of 2 if OBJECT is a positive integer.
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Otherwise return 0. Omitting N means return 1 for a positive integer."
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(ash (if (and (natnump object) (> object 0)) 1 0)
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(or n 0)))
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(defvar pos-tip-saved-frame-coordinates '(0 . 0)
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"The latest result of `pos-tip-frame-top-left-coordinates'.")
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(defvar pos-tip-frame-offset nil
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"The latest result of `pos-tip-calibrate-frame-offset'. This value
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is used for non-X graphical environment.")
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(defvar pos-tip-frame-offset-array [nil nil nil nil]
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"Array of the results of `pos-tip-calibrate-frame-offset'. They are
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recorded only when `pos-tip-frame-top-left-coordinates' is called for a
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non-X but graphical frame.
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The 2nd and 4th elements are the values for frames having a menu bar.
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The 3rd and 4th elements are the values for frames having a tool bar.")
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(defun pos-tip-frame-top-left-coordinates (&optional frame)
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"Return the pixel coordinates of FRAME as a cons cell (LEFT . TOP),
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which are relative to top left corner of screen.
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Return nil if failing to acquire the coordinates.
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If FRAME is omitted, use selected-frame.
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Users can also get the frame coordinates by referring the variable
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`pos-tip-saved-frame-coordinates' just after calling this function."
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(let ((winsys (pos-tip-window-system frame)))
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(cond
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((null winsys)
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(error "text-only frame: %S" frame))
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((eq winsys 'x)
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(condition-case nil
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(with-current-buffer (get-buffer-create " *xwininfo*")
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(let ((case-fold-search nil))
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(buffer-disable-undo)
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(erase-buffer)
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(call-process shell-file-name nil t nil shell-command-switch
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(format "xwininfo -display %s -id %s"
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(frame-parameter frame 'display)
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(frame-parameter frame 'window-id)))
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(goto-char (point-min))
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(search-forward "\n Absolute")
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(setq pos-tip-saved-frame-coordinates
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(cons (string-to-number (buffer-substring-no-properties
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(search-forward "X: ")
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(line-end-position)))
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(string-to-number (buffer-substring-no-properties
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(search-forward "Y: ")
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(line-end-position)))))))
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(error nil)))
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(t
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(let* ((index (+ (pos-tip-normalize-natnum
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(frame-parameter frame 'menu-bar-lines) 0)
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(pos-tip-normalize-natnum
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(frame-parameter frame 'tool-bar-lines) 1)))
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(offset (or (aref pos-tip-frame-offset-array index)
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(aset pos-tip-frame-offset-array index
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(pos-tip-calibrate-frame-offset frame)))))
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(if offset
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(setq pos-tip-saved-frame-coordinates
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(cons (+ (eval (frame-parameter frame 'left))
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(car offset))
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(+ (eval (frame-parameter frame 'top))
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(cdr offset))))))))))
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(defun pos-tip-frame-relative-position
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(frame1 frame2 &optional w32-frame frame-coord1 frame-coord2)
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"Return the pixel coordinates of FRAME1 relative to FRAME2
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as a cons cell (LEFT . TOP).
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W32-FRAME non-nil means both of frames are under `w32' window system.
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FRAME-COORD1 and FRAME-COORD2, if given, specify the absolute
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coordinates of FRAME1 and FRAME2, respectively, which make the
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calculations faster if the frames have different heights of menu bars
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and tool bars."
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(if (and (eq (pos-tip-normalize-natnum
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(frame-parameter frame1 'menu-bar-lines))
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(pos-tip-normalize-natnum
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(frame-parameter frame2 'menu-bar-lines)))
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(or w32-frame
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(eq (pos-tip-normalize-natnum
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(frame-parameter frame1 'tool-bar-lines))
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(pos-tip-normalize-natnum
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(frame-parameter frame2 'tool-bar-lines)))))
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(cons (- (eval (frame-parameter frame1 'left))
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(eval (frame-parameter frame2 'left)))
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(- (eval (frame-parameter frame1 'top))
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(eval (frame-parameter frame2 'top))))
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(unless frame-coord1
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(setq frame-coord1 (let (pos-tip-saved-frame-coordinates)
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(pos-tip-frame-top-left-coordinates frame1))))
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(unless frame-coord2
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(setq frame-coord2 (let (pos-tip-saved-frame-coordinates)
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(pos-tip-frame-top-left-coordinates frame2))))
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(cons (- (car frame-coord1) (car frame-coord2))
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(- (cdr frame-coord1) (cdr frame-coord2)))))
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(defvar pos-tip-upperside-p nil
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"Non-nil indicates the latest result of `pos-tip-compute-pixel-position'
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was upper than the location specified by the arguments.")
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(defvar pos-tip-w32-saved-max-width-height nil
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"Display pixel size effective for showing tooltip in MS-Windows desktop.
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This doesn't include the taskbar area, so isn't same as actual display size.")
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(defun pos-tip-compute-pixel-position
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(&optional pos window pixel-width pixel-height frame-coordinates dx dy)
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"Return pixel position of POS in WINDOW like (X . Y), which indicates
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the absolute or relative coordinates of bottom left corner of the object.
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Omitting POS and WINDOW means use current position and selected window,
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respectively.
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If PIXEL-WIDTH and PIXEL-HEIGHT are given, this function assumes these
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values as the size of small window like tooltip which is located around the
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||
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object at POS. These values are used to adjust the location in order that
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||
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the tooltip won't disappear by sticking out of the display. By referring
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||
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the variable `pos-tip-upperside-p' after calling this function, user can
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||
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examine whether the tooltip will be located above the specified position.
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||
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If FRAME-COORDINATES is omitted or nil, automatically obtain the absolute
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||
|
coordinates of the top left corner of frame which WINDOW is on. Here,
|
||
|
`top left corner of frame' represents the origin of `window-pixel-edges'
|
||
|
and its coordinates are essential for calculating the return value as
|
||
|
absolute coordinates. If a cons cell like (LEFT . TOP), specifies the
|
||
|
frame absolute location and makes the calculation slightly faster, but can
|
||
|
be used only when it's clear that frame is in the specified position. Users
|
||
|
can get the latest values of frame coordinates for using in the next call
|
||
|
by referring the variable `pos-tip-saved-frame-coordinates' just after
|
||
|
calling this function. Otherwise, FRAME-COORDINATES `relative' means return
|
||
|
pixel coordinates of the object relative to the top left corner of the frame.
|
||
|
This is the same effect as `pos-tip-use-relative-coordinates' is non-nil.
|
||
|
|
||
|
DX specifies horizontal offset in pixel.
|
||
|
|
||
|
DY specifies vertical offset in pixel. This makes the calculations done
|
||
|
without considering the height of object at POS, so the object might be
|
||
|
hidden by the tooltip."
|
||
|
(let* ((frame (window-frame (or window (selected-window))))
|
||
|
(w32-frame (eq (pos-tip-window-system frame) 'w32))
|
||
|
(relative (or pos-tip-use-relative-coordinates
|
||
|
(eq frame-coordinates 'relative)
|
||
|
(and w32-frame
|
||
|
(null pos-tip-w32-saved-max-width-height))))
|
||
|
(frame-coord (or (and relative '(0 . 0))
|
||
|
frame-coordinates
|
||
|
(pos-tip-frame-top-left-coordinates frame)
|
||
|
(progn
|
||
|
(setq relative t
|
||
|
pos-tip-use-relative-coordinates t)
|
||
|
'(0 . 0))))
|
||
|
(posn (posn-at-point (or pos (window-point window)) window))
|
||
|
(line (cdr (posn-actual-col-row posn)))
|
||
|
(line-height (and line
|
||
|
(or (window-line-height line window)
|
||
|
(and (redisplay t)
|
||
|
(window-line-height line window)))))
|
||
|
(x-y (or (posn-x-y posn)
|
||
|
(let ((geom (pos-visible-in-window-p
|
||
|
(or pos (window-point window)) window t)))
|
||
|
(and geom (cons (car geom) (cadr geom))))
|
||
|
'(0 . 0)))
|
||
|
(x (+ (car frame-coord)
|
||
|
(car (window-inside-pixel-edges window))
|
||
|
(car x-y)
|
||
|
(or dx 0)))
|
||
|
(y0 (+ (cdr frame-coord)
|
||
|
(cadr (window-pixel-edges window))
|
||
|
(or (nth 2 line-height) (cdr x-y))))
|
||
|
(y (+ y0
|
||
|
(or dy
|
||
|
(car line-height)
|
||
|
(with-current-buffer (window-buffer window)
|
||
|
(cond
|
||
|
;; `posn-object-width-height' returns an incorrect value
|
||
|
;; when the header line is displayed (Emacs bug #4426).
|
||
|
((and posn
|
||
|
(null header-line-format))
|
||
|
(cdr (posn-object-width-height posn)))
|
||
|
((and (bound-and-true-p text-scale-mode)
|
||
|
(not (zerop (with-no-warnings
|
||
|
text-scale-mode-amount))))
|
||
|
(round (* (frame-char-height frame)
|
||
|
(with-no-warnings
|
||
|
(expt text-scale-mode-step
|
||
|
text-scale-mode-amount)))))
|
||
|
(t
|
||
|
(frame-char-height frame)))))))
|
||
|
xmax ymax)
|
||
|
(cond
|
||
|
(relative
|
||
|
(setq xmax (frame-pixel-width frame)
|
||
|
ymax (frame-pixel-height frame)))
|
||
|
(w32-frame
|
||
|
(setq xmax (car pos-tip-w32-saved-max-width-height)
|
||
|
ymax (cdr pos-tip-w32-saved-max-width-height)))
|
||
|
(t
|
||
|
(setq xmax (x-display-pixel-width frame)
|
||
|
ymax (x-display-pixel-height frame))))
|
||
|
(setq pos-tip-upperside-p (> (+ y (or pixel-height 0))
|
||
|
ymax))
|
||
|
(cons (max 0 (min x (- xmax (or pixel-width 0))))
|
||
|
(max 0 (if pos-tip-upperside-p
|
||
|
(- (if dy ymax y0) (or pixel-height 0))
|
||
|
y)))))
|
||
|
|
||
|
(defun pos-tip-cancel-timer ()
|
||
|
"Cancel timeout of tooltip."
|
||
|
(mapc (lambda (timer)
|
||
|
(if (eq (aref timer 5) 'x-hide-tip)
|
||
|
(cancel-timer timer)))
|
||
|
timer-list))
|
||
|
|
||
|
(defun pos-tip-avoid-mouse (left right top bottom &optional frame)
|
||
|
"Move out mouse pointer if it is inside region (LEFT RIGHT TOP BOTTOM)
|
||
|
in FRAME. Return new mouse position like (FRAME . (X . Y))."
|
||
|
(unless frame
|
||
|
(setq frame (selected-frame)))
|
||
|
(let* ((mpos (with-selected-window (frame-selected-window frame)
|
||
|
(mouse-pixel-position)))
|
||
|
(mframe (pop mpos))
|
||
|
(mx (car mpos))
|
||
|
(my (cdr mpos)))
|
||
|
(when (and (eq mframe frame)
|
||
|
(numberp mx))
|
||
|
(let* ((large-number (+ (frame-pixel-width frame) (frame-pixel-height frame)))
|
||
|
(dl (if (> left 2)
|
||
|
(1+ (- mx left))
|
||
|
large-number))
|
||
|
(dr (if (< (1+ right) (frame-pixel-width frame))
|
||
|
(- right mx)
|
||
|
large-number))
|
||
|
(dt (if (> top 2)
|
||
|
(1+ (- my top))
|
||
|
large-number))
|
||
|
(db (if (< (1+ bottom) (frame-pixel-height frame))
|
||
|
(- bottom my)
|
||
|
large-number))
|
||
|
(d (min dl dr dt db)))
|
||
|
(when (> d -2)
|
||
|
(cond
|
||
|
((= d dl)
|
||
|
(setq mx (- left 2)))
|
||
|
((= d dr)
|
||
|
(setq mx (1+ right)))
|
||
|
((= d dt)
|
||
|
(setq my (- top 2)))
|
||
|
(t
|
||
|
(setq my (1+ bottom))))
|
||
|
(set-mouse-pixel-position frame mx my)
|
||
|
(sit-for 0.0001))))
|
||
|
(cons mframe (and mpos (cons mx my)))))
|
||
|
|
||
|
(defun pos-tip-compute-foreground-color (tip-color)
|
||
|
"Compute the foreground color to use for tooltip.
|
||
|
|
||
|
TIP-COLOR is a face or a cons cell like (FOREGROUND-COLOR . BACKGROUND-COLOR).
|
||
|
If it is nil, use `pos-tip-foreground-color' or the foreground color of the
|
||
|
`tooltip' face."
|
||
|
(or (and (facep tip-color)
|
||
|
(face-attribute tip-color :foreground))
|
||
|
(car-safe tip-color)
|
||
|
pos-tip-foreground-color
|
||
|
(face-foreground 'tooltip)))
|
||
|
|
||
|
(defun pos-tip-compute-background-color (tip-color)
|
||
|
"Compute the background color to use for tooltip.
|
||
|
|
||
|
TIP-COLOR is a face or a cons cell like (FOREGROUND-COLOR . BACKGROUND-COLOR).
|
||
|
If it is nil, use `pos-tip-background-color' or the background color of the
|
||
|
`tooltip' face."
|
||
|
(or (and (facep tip-color)
|
||
|
(face-attribute tip-color :background))
|
||
|
(cdr-safe tip-color)
|
||
|
pos-tip-background-color
|
||
|
(face-background 'tooltip)))
|
||
|
|
||
|
(defun pos-tip-show-no-propertize
|
||
|
(string &optional tip-color pos window timeout pixel-width pixel-height frame-coordinates dx dy)
|
||
|
"Show STRING in a tooltip at POS in WINDOW.
|
||
|
Analogous to `pos-tip-show' except don't propertize STRING by `pos-tip' face.
|
||
|
|
||
|
PIXEL-WIDTH and PIXEL-HEIGHT specify the size of tooltip, if given. These
|
||
|
are used to adjust the tooltip position in order that it doesn't disappear by
|
||
|
sticking out of the display, and also used to prevent it from vanishing by
|
||
|
overlapping with mouse pointer.
|
||
|
|
||
|
Note that this function itself doesn't calculate tooltip size because the
|
||
|
character width and height specified by faces are unknown. So users should
|
||
|
calculate PIXEL-WIDTH and PIXEL-HEIGHT by using `pos-tip-tooltip-width' and
|
||
|
`pos-tip-tooltip-height', or use `pos-tip-show' instead, which can
|
||
|
automatically calculate tooltip size.
|
||
|
|
||
|
See `pos-tip-show' for details.
|
||
|
|
||
|
Example:
|
||
|
|
||
|
\(defface my-tooltip
|
||
|
'((t
|
||
|
:background \"gray85\"
|
||
|
:foreground \"black\"
|
||
|
:inherit variable-pitch))
|
||
|
\"Face for my tooltip.\")
|
||
|
|
||
|
\(defface my-tooltip-highlight
|
||
|
'((t
|
||
|
:background \"blue\"
|
||
|
:foreground \"white\"
|
||
|
:inherit my-tooltip))
|
||
|
\"Face for my tooltip highlighted.\")
|
||
|
|
||
|
\(let ((str (propertize \" foo \\n bar \\n baz \" 'face 'my-tooltip)))
|
||
|
(put-text-property 6 11 'face 'my-tooltip-highlight str)
|
||
|
(pos-tip-show-no-propertize str 'my-tooltip))"
|
||
|
(unless window
|
||
|
(setq window (selected-window)))
|
||
|
(let* ((frame (window-frame window))
|
||
|
(winsys (pos-tip-window-system frame))
|
||
|
(x-frame (eq winsys 'x))
|
||
|
(w32-frame (eq winsys 'w32))
|
||
|
(relative (or pos-tip-use-relative-coordinates
|
||
|
(eq frame-coordinates 'relative)
|
||
|
(and w32-frame
|
||
|
(null pos-tip-w32-saved-max-width-height))))
|
||
|
(x-y (prog1
|
||
|
(pos-tip-compute-pixel-position pos window
|
||
|
pixel-width pixel-height
|
||
|
frame-coordinates dx dy)
|
||
|
(if pos-tip-use-relative-coordinates
|
||
|
(setq relative t))))
|
||
|
(ax (car x-y))
|
||
|
(ay (cdr x-y))
|
||
|
(rx (if relative ax (- ax (car pos-tip-saved-frame-coordinates))))
|
||
|
(ry (if relative ay (- ay (cdr pos-tip-saved-frame-coordinates))))
|
||
|
(retval (cons rx ry))
|
||
|
(fg (pos-tip-compute-foreground-color tip-color))
|
||
|
(bg (pos-tip-compute-background-color tip-color))
|
||
|
(use-dxdy (or relative
|
||
|
(not x-frame)))
|
||
|
(spacing (frame-parameter frame 'line-spacing))
|
||
|
(border (ash (+ pos-tip-border-width
|
||
|
pos-tip-internal-border-width)
|
||
|
1))
|
||
|
(x-max-tooltip-size
|
||
|
(cons (+ (if x-frame 1 0)
|
||
|
(/ (- (or pixel-width
|
||
|
(cond
|
||
|
(relative
|
||
|
(frame-pixel-width frame))
|
||
|
(w32-frame
|
||
|
(car pos-tip-w32-saved-max-width-height))
|
||
|
(t
|
||
|
(x-display-pixel-width frame))))
|
||
|
border)
|
||
|
(frame-char-width frame)))
|
||
|
(/ (- (or pixel-height
|
||
|
(x-display-pixel-height frame))
|
||
|
border)
|
||
|
(frame-char-height frame))))
|
||
|
(mpos (with-selected-window window (mouse-pixel-position)))
|
||
|
(mframe (car mpos))
|
||
|
default-frame-alist)
|
||
|
(if (or relative
|
||
|
(and use-dxdy
|
||
|
(null (cadr mpos))))
|
||
|
(unless (and (cadr mpos)
|
||
|
(eq mframe frame))
|
||
|
(let* ((edges (window-inside-pixel-edges (cadr (window-list frame))))
|
||
|
(mx (ash (+ (pop edges) (cadr edges)) -1))
|
||
|
(my (ash (+ (pop edges) (cadr edges)) -1)))
|
||
|
(setq mframe frame)
|
||
|
(set-mouse-pixel-position mframe mx my)
|
||
|
(sit-for 0.0001)))
|
||
|
(when (and (cadr mpos)
|
||
|
(not (eq mframe frame)))
|
||
|
(let ((rel-coord (pos-tip-frame-relative-position frame mframe w32-frame
|
||
|
frame-coordinates)))
|
||
|
(setq rx (+ rx (car rel-coord))
|
||
|
ry (+ ry (cdr rel-coord))))))
|
||
|
(and pixel-width pixel-height
|
||
|
(setq mpos (pos-tip-avoid-mouse rx (+ rx pixel-width
|
||
|
(if w32-frame 3 0))
|
||
|
ry (+ ry pixel-height)
|
||
|
mframe)))
|
||
|
(x-show-tip string mframe
|
||
|
`((border-width . ,pos-tip-border-width)
|
||
|
(internal-border-width . ,pos-tip-internal-border-width)
|
||
|
,@(and (not use-dxdy) `((left . ,ax)
|
||
|
(top . ,ay)))
|
||
|
(font . ,(frame-parameter frame 'font))
|
||
|
,@(and spacing `((line-spacing . ,spacing)))
|
||
|
,@(and (stringp fg) `((foreground-color . ,fg)))
|
||
|
,@(and (stringp bg) `((background-color . ,bg))))
|
||
|
(and timeout (> timeout 0) timeout)
|
||
|
(and use-dxdy (- rx (cadr mpos)))
|
||
|
(and use-dxdy (- ry (cddr mpos))))
|
||
|
(if (and timeout (<= timeout 0))
|
||
|
(pos-tip-cancel-timer))
|
||
|
retval))
|
||
|
|
||
|
(defun pos-tip-split-string (string &optional width margin justify squeeze max-rows)
|
||
|
"Split STRING into fixed width strings. Return a list of these strings.
|
||
|
|
||
|
WIDTH specifies the width of filling each paragraph. WIDTH nil means use
|
||
|
the width of currently selected frame. Note that this function doesn't add any
|
||
|
padding characters at the end of each row.
|
||
|
|
||
|
MARGIN, if non-nil, specifies left margin width which is the number of spece
|
||
|
characters to add at the beginning of each row.
|
||
|
|
||
|
The optional fourth argument JUSTIFY specifies which kind of justification
|
||
|
to do: `full', `left', `right', `center', or `none'. A value of t means handle
|
||
|
each paragraph as specified by its text properties. Omitting JUSTIFY means
|
||
|
don't perform justification, word wrap and kinsoku shori (禁則処理).
|
||
|
|
||
|
SQUEEZE nil means leave whitespaces other than line breaks untouched.
|
||
|
|
||
|
MAX-ROWS, if given, specifies maximum number of elements of return value.
|
||
|
The elements exceeding this number are discarded."
|
||
|
(with-temp-buffer
|
||
|
(let* ((tab-width (or pos-tip-tab-width tab-width))
|
||
|
(fill-column (or width (frame-width)))
|
||
|
(left-margin (or margin 0))
|
||
|
(kinsoku-limit 1)
|
||
|
indent-tabs-mode
|
||
|
row rows)
|
||
|
(insert string)
|
||
|
(untabify (point-min) (point-max))
|
||
|
(if justify
|
||
|
(fill-region (point-min) (point-max) justify (not squeeze))
|
||
|
(setq margin (make-string left-margin ?\s)))
|
||
|
(goto-char (point-min))
|
||
|
(while (prog2
|
||
|
(let ((line (buffer-substring
|
||
|
(point) (progn (end-of-line) (point)))))
|
||
|
(if justify
|
||
|
(push line rows)
|
||
|
(while (progn
|
||
|
(setq line (concat margin line)
|
||
|
row (truncate-string-to-width line fill-column))
|
||
|
(push row rows)
|
||
|
(if (not (= (length row) (length line)))
|
||
|
(setq line (substring line (length row))))))))
|
||
|
(< (point) (point-max))
|
||
|
(beginning-of-line 2)))
|
||
|
(nreverse (if max-rows
|
||
|
(last rows max-rows)
|
||
|
rows)))))
|
||
|
|
||
|
(defun pos-tip-fill-string (string &optional width margin justify squeeze max-rows)
|
||
|
"Fill each of the paragraphs in STRING.
|
||
|
|
||
|
WIDTH specifies the width of filling each paragraph. WIDTH nil means use
|
||
|
the width of currently selected frame. Note that this function doesn't add any
|
||
|
padding characters at the end of each row.
|
||
|
|
||
|
MARGIN, if non-nil, specifies left margin width which is the number of spece
|
||
|
characters to add at the beginning of each row.
|
||
|
|
||
|
The optional fourth argument JUSTIFY specifies which kind of justification
|
||
|
to do: `full', `left', `right', `center', or `none'. A value of t means handle
|
||
|
each paragraph as specified by its text properties. Omitting JUSTIFY means
|
||
|
don't perform justification, word wrap and kinsoku shori (禁則処理).
|
||
|
|
||
|
SQUEEZE nil means leave whitespaces other than line breaks untouched.
|
||
|
|
||
|
MAX-ROWS, if given, specifies maximum number of rows. The rows exceeding
|
||
|
this number are discarded."
|
||
|
(if justify
|
||
|
(with-temp-buffer
|
||
|
(let* ((tab-width (or pos-tip-tab-width tab-width))
|
||
|
(fill-column (or width (frame-width)))
|
||
|
(left-margin (or margin 0))
|
||
|
(kinsoku-limit 1)
|
||
|
indent-tabs-mode)
|
||
|
(insert string)
|
||
|
(untabify (point-min) (point-max))
|
||
|
(fill-region (point-min) (point-max) justify (not squeeze))
|
||
|
(if max-rows
|
||
|
(buffer-substring (goto-char (point-min))
|
||
|
(line-end-position max-rows))
|
||
|
(buffer-string))))
|
||
|
(mapconcat 'identity
|
||
|
(pos-tip-split-string string width margin nil nil max-rows)
|
||
|
"\n")))
|
||
|
|
||
|
(defun pos-tip-truncate-string (string width height)
|
||
|
"Truncate each line of STRING to WIDTH and discard lines exceeding HEIGHT."
|
||
|
(with-temp-buffer
|
||
|
(insert string)
|
||
|
(goto-char (point-min))
|
||
|
(let ((nrow 0)
|
||
|
rows)
|
||
|
(while (and (< nrow height)
|
||
|
(prog2
|
||
|
(push (truncate-string-to-width
|
||
|
(buffer-substring (point) (progn (end-of-line) (point)))
|
||
|
width)
|
||
|
rows)
|
||
|
(< (point) (point-max))
|
||
|
(beginning-of-line 2)
|
||
|
(setq nrow (1+ nrow)))))
|
||
|
(mapconcat 'identity (nreverse rows) "\n"))))
|
||
|
|
||
|
(defun pos-tip-string-width-height (string)
|
||
|
"Count columns and rows of STRING. Return a cons cell like (WIDTH . HEIGHT).
|
||
|
The last empty line of STRING is ignored.
|
||
|
|
||
|
Example:
|
||
|
|
||
|
\(pos-tip-string-width-height \"abc\\nあいう\\n123\")
|
||
|
;; => (6 . 3)"
|
||
|
(with-temp-buffer
|
||
|
(insert string)
|
||
|
(goto-char (point-min))
|
||
|
(end-of-line)
|
||
|
(let ((width (current-column))
|
||
|
(height (if (eq (char-before (point-max)) ?\n) 0 1)))
|
||
|
(while (< (point) (point-max))
|
||
|
(end-of-line 2)
|
||
|
(setq width (max (current-column) width)
|
||
|
height (1+ height)))
|
||
|
(cons width height))))
|
||
|
|
||
|
(defun pos-tip-x-display-width (&optional frame)
|
||
|
"Return maximum column number in tooltip which occupies the full width
|
||
|
of display. Omitting FRAME means use display that selected frame is in."
|
||
|
(1+ (/ (x-display-pixel-width frame) (frame-char-width frame))))
|
||
|
|
||
|
(defun pos-tip-x-display-height (&optional frame)
|
||
|
"Return maximum row number in tooltip which occupies the full height
|
||
|
of display. Omitting FRAME means use display that selected frame is in."
|
||
|
(1+ (/ (x-display-pixel-height frame) (frame-char-height frame))))
|
||
|
|
||
|
(defun pos-tip-tooltip-width (width char-width)
|
||
|
"Calculate tooltip pixel width."
|
||
|
(+ (* width char-width)
|
||
|
(ash (+ pos-tip-border-width
|
||
|
pos-tip-internal-border-width)
|
||
|
1)))
|
||
|
|
||
|
(defun pos-tip-tooltip-height (height char-height &optional frame)
|
||
|
"Calculate tooltip pixel height."
|
||
|
(let ((spacing (or (default-value 'line-spacing)
|
||
|
(frame-parameter frame 'line-spacing))))
|
||
|
(+ (* height (+ char-height
|
||
|
(cond
|
||
|
((integerp spacing)
|
||
|
spacing)
|
||
|
((floatp spacing)
|
||
|
(truncate (* (frame-char-height frame)
|
||
|
spacing)))
|
||
|
(t 0))))
|
||
|
(ash (+ pos-tip-border-width
|
||
|
pos-tip-internal-border-width)
|
||
|
1))))
|
||
|
|
||
|
(defun pos-tip-show
|
||
|
(string &optional tip-color pos window timeout width frame-coordinates dx dy)
|
||
|
"Show STRING in a tooltip, which is a small X window, at POS in WINDOW
|
||
|
using frame's default font with TIP-COLOR.
|
||
|
|
||
|
Return pixel position of tooltip relative to top left corner of frame as
|
||
|
a cons cell like (X . Y).
|
||
|
|
||
|
TIP-COLOR is a face or a cons cell like (FOREGROUND-COLOR . BACKGROUND-COLOR)
|
||
|
used to specify *only* foreground-color and background-color of tooltip. If
|
||
|
omitted, use `pos-tip-foreground-color' and `pos-tip-background-color' or the
|
||
|
foreground and background color of the `tooltip' face instead.
|
||
|
|
||
|
Omitting POS and WINDOW means use current position and selected window,
|
||
|
respectively.
|
||
|
|
||
|
Automatically hide the tooltip after TIMEOUT seconds. Omitting TIMEOUT means
|
||
|
use the default timeout of 5 seconds. Non-positive TIMEOUT means don't hide
|
||
|
tooltip automatically.
|
||
|
|
||
|
WIDTH, if non-nil, specifies the width of filling each paragraph.
|
||
|
|
||
|
If FRAME-COORDINATES is omitted or nil, automatically obtain the absolute
|
||
|
coordinates of the top left corner of frame which WINDOW is on. Here,
|
||
|
`top left corner of frame' represents the origin of `window-pixel-edges'
|
||
|
and its coordinates are essential for calculating the absolute coordinates
|
||
|
of the tooltip. If a cons cell like (LEFT . TOP), specifies the frame
|
||
|
absolute location and makes the calculation slightly faster, but can be
|
||
|
used only when it's clear that frame is in the specified position. Users
|
||
|
can get the latest values of frame coordinates for using in the next call
|
||
|
by referring the variable `pos-tip-saved-frame-coordinates' just after
|
||
|
calling this function. Otherwise, FRAME-COORDINATES `relative' means use
|
||
|
the pixel coordinates relative to the top left corner of the frame for
|
||
|
displaying the tooltip. This is the same effect as
|
||
|
`pos-tip-use-relative-coordinates' is non-nil.
|
||
|
|
||
|
DX specifies horizontal offset in pixel.
|
||
|
|
||
|
DY specifies vertical offset in pixel. This makes the calculations done
|
||
|
without considering the height of object at POS, so the object might be
|
||
|
hidden by the tooltip.
|
||
|
|
||
|
See also `pos-tip-show-no-propertize'."
|
||
|
(unless window
|
||
|
(setq window (selected-window)))
|
||
|
(let* ((frame (window-frame window))
|
||
|
(max-width (pos-tip-x-display-width frame))
|
||
|
(max-height (pos-tip-x-display-height frame))
|
||
|
(w-h (pos-tip-string-width-height string))
|
||
|
(fg (pos-tip-compute-foreground-color tip-color))
|
||
|
(bg (pos-tip-compute-background-color tip-color))
|
||
|
(frame-font (find-font (font-spec :name (frame-parameter frame 'font))))
|
||
|
(tip-face-attrs (list :font frame-font :foreground fg :background bg)))
|
||
|
(cond
|
||
|
((and width
|
||
|
(> (car w-h) width))
|
||
|
(setq string (pos-tip-fill-string string width nil 'none nil max-height)
|
||
|
w-h (pos-tip-string-width-height string)))
|
||
|
((or (> (car w-h) max-width)
|
||
|
(> (cdr w-h) max-height))
|
||
|
(setq string (pos-tip-truncate-string string max-width max-height)
|
||
|
w-h (pos-tip-string-width-height string))))
|
||
|
(pos-tip-show-no-propertize
|
||
|
(propertize string 'face tip-face-attrs)
|
||
|
tip-color pos window timeout
|
||
|
(pos-tip-tooltip-width (car w-h) (frame-char-width frame))
|
||
|
(pos-tip-tooltip-height (cdr w-h) (frame-char-height frame) frame)
|
||
|
frame-coordinates dx dy)))
|
||
|
|
||
|
(defalias 'pos-tip-hide 'x-hide-tip
|
||
|
"Hide pos-tip's tooltip.")
|
||
|
|
||
|
(defun pos-tip-calibrate-frame-offset (&optional frame)
|
||
|
"Return coordinates of FRAME orign relative to the top left corner of
|
||
|
the FRAME extent, like (LEFT . TOP). The return value is recorded to
|
||
|
`pos-tip-frame-offset'.
|
||
|
|
||
|
Note that this function does't correctly work for X frame and Emacs 22."
|
||
|
(setq pos-tip-frame-offset nil)
|
||
|
(let* ((window (frame-first-window frame))
|
||
|
(delete-frame-functions
|
||
|
'((lambda (frame)
|
||
|
(if (equal (frame-parameter frame 'name) "tooltip")
|
||
|
(setq pos-tip-frame-offset
|
||
|
(cons (eval (frame-parameter frame 'left))
|
||
|
(eval (frame-parameter frame 'top))))))))
|
||
|
(pos-tip-border-width 0)
|
||
|
(pos-tip-internal-border-width 1)
|
||
|
(rpos (pos-tip-show ""
|
||
|
`(nil . ,(frame-parameter frame 'background-color))
|
||
|
(window-start window) window
|
||
|
nil nil 'relative nil 0)))
|
||
|
(sit-for 0)
|
||
|
(pos-tip-hide)
|
||
|
(and pos-tip-frame-offset
|
||
|
(setq pos-tip-frame-offset
|
||
|
(cons (- (car pos-tip-frame-offset)
|
||
|
(car rpos)
|
||
|
(eval (frame-parameter frame 'left)))
|
||
|
(- (cdr pos-tip-frame-offset)
|
||
|
(cdr rpos)
|
||
|
(eval (frame-parameter frame 'top))))))))
|
||
|
|
||
|
(defun pos-tip-w32-max-width-height (&optional keep-maximize)
|
||
|
"Maximize the currently selected frame temporarily and set
|
||
|
`pos-tip-w32-saved-max-width-height' the effective display size in order
|
||
|
to become possible to calculate the absolute location of tooltip.
|
||
|
|
||
|
KEEP-MAXIMIZE non-nil means leave the frame maximized.
|
||
|
|
||
|
Note that this function is usable only in Emacs 23 for MS-Windows."
|
||
|
(interactive)
|
||
|
(unless (eq window-system 'w32)
|
||
|
(error "`pos-tip-w32-max-width-height' can be used only in w32 frame."))
|
||
|
;; Maximize frame
|
||
|
(with-no-warnings (w32-send-sys-command 61488))
|
||
|
(sit-for 0)
|
||
|
(let ((offset (pos-tip-calibrate-frame-offset)))
|
||
|
(prog1
|
||
|
(setq pos-tip-w32-saved-max-width-height
|
||
|
(cons (frame-pixel-width)
|
||
|
(+ (frame-pixel-height)
|
||
|
(- (cdr offset) (car offset)))))
|
||
|
(if (called-interactively-p 'interactive)
|
||
|
(message "%S" pos-tip-w32-saved-max-width-height))
|
||
|
(unless keep-maximize
|
||
|
;; Restore frame
|
||
|
(with-no-warnings (w32-send-sys-command 61728))))))
|
||
|
|
||
|
|
||
|
(provide 'pos-tip)
|
||
|
|
||
|
;;;
|
||
|
;;; pos-tip.el ends here
|