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221
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1 /* mswindows selection processing for XEmacs
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2 Copyright (C) 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
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3
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: Not synched with FSF. */
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22
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23 /* Authorship:
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24
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25 Written by Kevin Gallo for FSF Emacs.
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272
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26 Rewritten for mswindows by Jonathan Harris, December 1997 for 21.0.
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410
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27 Hacked by Alastair Houghton, July 2000 for enhanced clipboard support.
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28 */
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221
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29
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30 #include <config.h>
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31 #include "lisp.h"
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398
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32 #include "frame.h"
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33 #include "select.h"
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410
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34 #include "opaque.h"
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35 #include "file-coding.h"
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36 #include "buffer.h"
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221
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37
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38 #include "console-msw.h"
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39
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410
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40 /* A list of handles that we must release. Not accessible from Lisp. */
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41 static Lisp_Object Vhandle_alist;
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221
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42
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410
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43 /* Test if this is an X symbol that we understand */
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44 static int
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45 x_sym_p (Lisp_Object value)
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46 {
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47 if (NILP (value) || INTP (value))
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48 return 0;
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49
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50 /* Check for some of the X symbols */
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51 if (EQ (value, QSTRING)) return 1;
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52 if (EQ (value, QTEXT)) return 1;
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53 if (EQ (value, QCOMPOUND_TEXT)) return 1;
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54
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55 return 0;
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56 }
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57
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58 /* This converts a Lisp symbol to an MS-Windows clipboard format.
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59 We have symbols for all predefined clipboard formats, but that
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60 doesn't mean we support them all ;-)
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61 The name of this function is actually a lie - it also knows about
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62 integers and strings... */
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63 static UINT
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64 symbol_to_ms_cf (Lisp_Object value)
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65 {
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66 /* If it's NIL, we're in trouble. */
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67 if (NILP (value)) return 0;
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68
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69 /* If it's an integer, assume it's a format ID */
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70 if (INTP (value)) return (UINT) (XINT (value));
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71
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72 /* If it's a string, register the format(!) */
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73 if (STRINGP (value))
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74 return RegisterClipboardFormat (XSTRING_DATA (value));
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75
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76 /* Check for Windows clipboard format symbols */
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77 if (EQ (value, QCF_TEXT)) return CF_TEXT;
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78 if (EQ (value, QCF_BITMAP)) return CF_BITMAP;
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79 if (EQ (value, QCF_METAFILEPICT)) return CF_METAFILEPICT;
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80 if (EQ (value, QCF_SYLK)) return CF_SYLK;
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81 if (EQ (value, QCF_DIF)) return CF_DIF;
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82 if (EQ (value, QCF_TIFF)) return CF_TIFF;
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83 if (EQ (value, QCF_OEMTEXT)) return CF_OEMTEXT;
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84 if (EQ (value, QCF_DIB)) return CF_DIB;
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85 if (EQ (value, QCF_PALETTE)) return CF_PALETTE;
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86 if (EQ (value, QCF_PENDATA)) return CF_PENDATA;
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87 if (EQ (value, QCF_RIFF)) return CF_RIFF;
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88 if (EQ (value, QCF_WAVE)) return CF_WAVE;
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89 if (EQ (value, QCF_UNICODETEXT)) return CF_UNICODETEXT;
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90 if (EQ (value, QCF_ENHMETAFILE)) return CF_ENHMETAFILE;
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91 if (EQ (value, QCF_HDROP)) return CF_HDROP;
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92 if (EQ (value, QCF_LOCALE)) return CF_LOCALE;
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93 if (EQ (value, QCF_OWNERDISPLAY)) return CF_OWNERDISPLAY;
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94 if (EQ (value, QCF_DSPTEXT)) return CF_DSPTEXT;
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95 if (EQ (value, QCF_DSPBITMAP)) return CF_DSPBITMAP;
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96 if (EQ (value, QCF_DSPMETAFILEPICT)) return CF_DSPMETAFILEPICT;
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97 if (EQ (value, QCF_DSPENHMETAFILE)) return CF_DSPENHMETAFILE;
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98
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99 return 0;
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100 }
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101
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102 /* This converts an MS-Windows clipboard format to its corresponding
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103 Lisp symbol, or a Lisp integer otherwise. */
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104 static Lisp_Object
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105 ms_cf_to_symbol (UINT format)
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106 {
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107 switch (format)
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108 {
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109 case CF_TEXT: return QCF_TEXT;
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110 case CF_BITMAP: return QCF_BITMAP;
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111 case CF_METAFILEPICT: return QCF_METAFILEPICT;
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112 case CF_SYLK: return QCF_SYLK;
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113 case CF_DIF: return QCF_DIF;
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114 case CF_TIFF: return QCF_TIFF;
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115 case CF_OEMTEXT: return QCF_OEMTEXT;
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116 case CF_DIB: return QCF_DIB;
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117 case CF_PALETTE: return QCF_PALETTE;
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118 case CF_PENDATA: return QCF_PENDATA;
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119 case CF_RIFF: return QCF_RIFF;
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120 case CF_WAVE: return QCF_WAVE;
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121 case CF_UNICODETEXT: return QCF_UNICODETEXT;
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122 case CF_ENHMETAFILE: return QCF_ENHMETAFILE;
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123 case CF_HDROP: return QCF_HDROP;
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124 case CF_LOCALE: return QCF_LOCALE;
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125 case CF_OWNERDISPLAY: return QCF_OWNERDISPLAY;
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126 case CF_DSPTEXT: return QCF_DSPTEXT;
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127 case CF_DSPBITMAP: return QCF_DSPBITMAP;
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128 case CF_DSPMETAFILEPICT: return QCF_DSPMETAFILEPICT;
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129 case CF_DSPENHMETAFILE: return QCF_DSPENHMETAFILE;
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130 default: return make_int ((int) format);
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131 }
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132 }
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133
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134 /* Test if the specified clipboard format is auto-released by the OS. If
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135 not, we must remember the handle on Vhandle_alist, and free it if
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136 the clipboard is emptied or if we set data with the same format. */
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137 static int
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138 cf_is_autofreed (UINT format)
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139 {
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140 switch (format)
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141 {
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142 /* This list comes from the SDK documentation */
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143 case CF_DSPENHMETAFILE:
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144 case CF_DSPMETAFILEPICT:
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145 case CF_ENHMETAFILE:
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146 case CF_BITMAP:
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147 case CF_DSPBITMAP:
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148 case CF_PALETTE:
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149 case CF_DIB:
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150 case CF_DSPTEXT:
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151 case CF_OEMTEXT:
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152 case CF_TEXT:
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153 case CF_UNICODETEXT:
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154 return TRUE;
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155
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156 default:
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157 return FALSE;
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158 }
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159 }
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160
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161 /* Do protocol to assert ourself as a selection owner.
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162
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163 Under mswindows, we:
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164
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165 * Only set the clipboard if (eq selection-name 'CLIPBOARD)
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166
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167 * Check if an X atom name has been passed. If so, convert to CF_TEXT
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168 (or CF_UNICODETEXT) remembering to perform LF -> CR-LF conversion.
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169
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170 * Otherwise assume the data is formatted appropriately for the data type
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171 that was passed.
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172
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173 Then set the clipboard as necessary.
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174 */
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398
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175 static Lisp_Object
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404
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176 mswindows_own_selection (Lisp_Object selection_name,
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410
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177 Lisp_Object selection_value,
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178 Lisp_Object how_to_add,
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179 Lisp_Object selection_type)
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398
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180 {
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410
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181 HGLOBAL hValue = NULL;
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182 UINT cfType;
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183 int is_X_type = FALSE;
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184 Lisp_Object cfObject;
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185 Lisp_Object data = Qnil;
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186 int size;
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187 void *src, *dst;
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188 struct frame *f = NULL;
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189
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190 /* Only continue if we're trying to set the clipboard - mswindows doesn't
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191 use the same selection model as X */
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192 if (!EQ (selection_name, QCLIPBOARD))
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193 return Qnil;
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404
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194
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410
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195 /* If this is one of the X-style atom name symbols, or NIL, convert it
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196 as appropriate */
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197 if (NILP (selection_type) || x_sym_p (selection_type))
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198 {
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199 /* Should COMPOUND_TEXT map to CF_UNICODETEXT? */
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200 cfType = CF_TEXT;
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201 cfObject = QCF_TEXT;
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202 is_X_type = TRUE;
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203 }
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204 else
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205 {
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206 cfType = symbol_to_ms_cf (selection_type);
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207
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208 /* Only continue if we can figure out a clipboard type */
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209 if (!cfType)
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210 return Qnil;
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211
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212 cfObject = selection_type;
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213 }
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214
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215 /* Convert things appropriately */
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216 data = select_convert_out (selection_name,
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217 cfObject,
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218 selection_value);
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219
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220 if (NILP (data))
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221 return Qnil;
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222
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223 if (CONSP (data))
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404
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224 {
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410
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225 if (!EQ (XCAR (data), cfObject))
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226 cfType = symbol_to_ms_cf (XCAR (data));
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227
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228 if (!cfType)
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229 return Qnil;
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404
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230
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410
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231 data = XCDR (data);
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232 }
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233
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234 /* We support opaque or string values, but we only mention string
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235 values for now... */
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236 if (!OPAQUEP (data)
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237 && !STRINGP (data))
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238 return Qnil;
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239
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240 /* Compute the data length */
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241 if (OPAQUEP (data))
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242 size = XOPAQUE_SIZE (data);
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243 else
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244 size = XSTRING_LENGTH (data) + 1;
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245
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246 /* Find the frame */
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247 f = selected_frame ();
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404
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248
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410
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249 /* Open the clipboard */
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250 if (!OpenClipboard (FRAME_MSWINDOWS_HANDLE (f)))
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251 return Qnil;
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252
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253 /* Allocate memory */
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254 hValue = GlobalAlloc (GMEM_DDESHARE | GMEM_MOVEABLE, size);
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255
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256 if (!hValue)
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257 {
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258 CloseClipboard ();
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404
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259
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410
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260 return Qnil;
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261 }
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262
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263 /* Copy the data */
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264 if (OPAQUEP (data))
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265 src = XOPAQUE_DATA (data);
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266 else
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267 src = XSTRING_DATA (data);
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268
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269 dst = GlobalLock (hValue);
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270
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271 if (!dst)
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272 {
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273 GlobalFree (hValue);
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274 CloseClipboard ();
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275
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276 return Qnil;
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277 }
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278
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279 memcpy (dst, src, size);
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280
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281 GlobalUnlock (hValue);
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282
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283 /* Empty the clipboard if we're replacing everything */
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284 if (NILP (how_to_add) || EQ (how_to_add, Qreplace_all))
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285 {
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286 if (!EmptyClipboard ())
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404
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287 {
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410
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288 CloseClipboard ();
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289 GlobalFree (hValue);
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290
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404
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291 return Qnil;
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292 }
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293 }
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398
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294
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410
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295 /* Append is currently handled in select.el; perhaps this should change,
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296 but it only really makes sense for ordinary text in any case... */
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297
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298 SetClipboardData (cfType, hValue);
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299
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300 if (!cf_is_autofreed (cfType))
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301 {
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302 Lisp_Object alist_elt = Qnil, rest;
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303 Lisp_Object cfType_int = make_int (cfType);
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304
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305 /* First check if there's an element in the alist for this type
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306 already. */
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307 alist_elt = assq_no_quit (cfType_int, Vhandle_alist);
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308
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309 /* Add an element to the alist */
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310 Vhandle_alist = Fcons (Fcons (cfType_int, make_opaque_ptr (hValue)),
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311 Vhandle_alist);
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312
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313 if (!NILP (alist_elt))
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314 {
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315 /* Free the original handle */
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316 GlobalFree ((HGLOBAL) get_opaque_ptr (XCDR (alist_elt)));
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317
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318 /* Remove the original one (adding first makes life easier, because
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319 we don't have to special case this being the first element) */
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320 for (rest = Vhandle_alist; !NILP (rest); rest = Fcdr (rest))
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321 if (EQ (cfType_int, Fcar (XCDR (rest))))
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322 {
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323 XCDR (rest) = Fcdr (XCDR (rest));
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324 break;
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325 }
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326 }
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327 }
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328
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329 CloseClipboard ();
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330
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331 /* #### Should really return a time, though this is because of the
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332 X model (by the looks of things) */
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333 return Qnil;
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334 }
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335
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336 static Lisp_Object
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337 mswindows_available_selection_types (Lisp_Object selection_name)
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338 {
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339 Lisp_Object types = Qnil;
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340 UINT format = 0;
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341 struct frame *f = NULL;
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342
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343 if (!EQ (selection_name, QCLIPBOARD))
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344 return Qnil;
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345
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346 /* Find the frame */
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347 f = selected_frame ();
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348
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349 /* Open the clipboard */
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350 if (!OpenClipboard (FRAME_MSWINDOWS_HANDLE (f)))
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351 return Qnil;
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352
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353 /* #### ajh - Should there be an unwind-protect handler around this?
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354 It could (well it probably won't, but it's always better to
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355 be safe) run out of memory and leave the clipboard open... */
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356
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357 while ((format = EnumClipboardFormats (format)))
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358 types = Fcons (ms_cf_to_symbol (format), types);
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359
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360 /* Close it */
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361 CloseClipboard ();
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362
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363 return types;
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364 }
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365
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366 static Lisp_Object
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367 mswindows_register_selection_data_type (Lisp_Object type_name)
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368 {
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369 /* Type already checked in select.c */
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370 const char *name = XSTRING_DATA (type_name);
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371 UINT format;
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372
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373 format = RegisterClipboardFormat (name);
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374
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375 if (format)
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376 return make_int ((int) format);
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377 else
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378 return Qnil;
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379 }
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380
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381 static Lisp_Object
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382 mswindows_selection_data_type_name (Lisp_Object type_id)
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383 {
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384 UINT format;
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385 int numchars;
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386 char name_buf[128];
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387
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388 /* If it's an integer, convert to a symbol if appropriate */
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389 if (INTP (type_id))
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390 type_id = ms_cf_to_symbol (XINT (type_id));
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391
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392 /* If this is a symbol, return it */
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393 if (SYMBOLP (type_id))
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394 return type_id;
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395
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396 /* Find the format code */
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397 format = symbol_to_ms_cf (type_id);
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398
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399 if (!format)
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400 return Qnil;
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401
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402 /* Microsoft, stupid Microsoft */
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403 numchars = GetClipboardFormatName (format, name_buf, 128);
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404
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405 if (numchars)
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406 {
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407 Lisp_Object name;
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408
|
|
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409 /* Do this properly - though we could support UNICODE (UCS-2) if
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410 MULE could hack it. */
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|
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411 name = make_ext_string (name_buf, numchars,
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412 Fget_coding_system (Qraw_text));
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413
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414 return name;
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|
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415 }
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|
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416
|
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398
|
417 return Qnil;
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|
|
418 }
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|
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419
|
|
|
420 static Lisp_Object
|
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404
|
421 mswindows_get_foreign_selection (Lisp_Object selection_symbol,
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|
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422 Lisp_Object target_type)
|
|
398
|
423 {
|
|
410
|
424 HGLOBAL hValue = NULL;
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|
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425 UINT cfType;
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|
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426 Lisp_Object cfObject = Qnil, ret = Qnil, value = Qnil;
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|
|
427 int is_X_type = FALSE;
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|
|
428 int size;
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|
|
429 void *data;
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|
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430 struct frame *f = NULL;
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|
|
431 struct gcpro gcpro1;
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432
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|
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433 /* Only continue if we're trying to read the clipboard - mswindows doesn't
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|
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434 use the same selection model as X */
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435 if (!EQ (selection_symbol, QCLIPBOARD))
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436 return Qnil;
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|
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437
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|
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438 /* If this is one fo the X-style atom name symbols, or NIL, convert it
|
|
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439 as appropriate */
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|
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440 if (NILP (target_type) || x_sym_p (target_type))
|
|
404
|
441 {
|
|
410
|
442 /* Should COMPOUND_TEXT map to CF_UNICODETEXT? */
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|
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443 cfType = CF_TEXT;
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|
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444 cfObject = QCF_TEXT;
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|
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445 is_X_type = TRUE;
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|
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446 }
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|
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447 else
|
|
|
448 {
|
|
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449 cfType = symbol_to_ms_cf (target_type);
|
|
404
|
450
|
|
410
|
451 /* Only continue if we can figure out a clipboard type */
|
|
|
452 if (!cfType)
|
|
404
|
453 return Qnil;
|
|
|
454
|
|
410
|
455 cfObject = ms_cf_to_symbol (cfType);
|
|
|
456 }
|
|
404
|
457
|
|
410
|
458 /* Find the frame */
|
|
|
459 f = selected_frame ();
|
|
404
|
460
|
|
410
|
461 /* Open the clipboard */
|
|
|
462 if (!OpenClipboard (FRAME_MSWINDOWS_HANDLE (f)))
|
|
|
463 return Qnil;
|
|
404
|
464
|
|
410
|
465 /* Read the clipboard */
|
|
|
466 hValue = GetClipboardData (cfType);
|
|
404
|
467
|
|
410
|
468 if (!hValue)
|
|
|
469 {
|
|
404
|
470 CloseClipboard ();
|
|
|
471
|
|
410
|
472 return Qnil;
|
|
|
473 }
|
|
|
474
|
|
|
475 /* Find the data */
|
|
|
476 size = GlobalSize (hValue);
|
|
|
477 data = GlobalLock (hValue);
|
|
|
478
|
|
|
479 if (!data)
|
|
|
480 {
|
|
|
481 CloseClipboard ();
|
|
|
482
|
|
|
483 return Qnil;
|
|
404
|
484 }
|
|
410
|
485
|
|
|
486 /* Place it in a Lisp string */
|
|
|
487 TO_INTERNAL_FORMAT (DATA, (data, size),
|
|
|
488 LISP_STRING, ret,
|
|
|
489 Qbinary);
|
|
|
490
|
|
|
491 GlobalUnlock (data);
|
|
|
492 CloseClipboard ();
|
|
|
493
|
|
|
494 GCPRO1 (ret);
|
|
|
495
|
|
|
496 /* Convert this to the appropriate type. If we can't find anything,
|
|
|
497 then we return a cons of the form (DATA-TYPE . STRING), where the
|
|
|
498 string contains the raw binary data. */
|
|
|
499 value = select_convert_in (selection_symbol,
|
|
|
500 cfObject,
|
|
|
501 ret);
|
|
|
502
|
|
|
503 UNGCPRO;
|
|
|
504
|
|
|
505 if (NILP (value))
|
|
|
506 return Fcons (cfObject, ret);
|
|
398
|
507 else
|
|
410
|
508 return value;
|
|
398
|
509 }
|
|
|
510
|
|
|
511 static void
|
|
|
512 mswindows_disown_selection (Lisp_Object selection, Lisp_Object timeval)
|
|
|
513 {
|
|
|
514 if (EQ (selection, QCLIPBOARD))
|
|
404
|
515 {
|
|
|
516 BOOL success = OpenClipboard (NULL);
|
|
|
517 if (success)
|
|
|
518 {
|
|
|
519 success = EmptyClipboard ();
|
|
|
520 /* Close it regardless of whether empty worked. */
|
|
|
521 if (!CloseClipboard ())
|
|
|
522 success = FALSE;
|
|
|
523 }
|
|
|
524
|
|
|
525 /* #### return success ? Qt : Qnil; */
|
|
|
526 }
|
|
|
527 }
|
|
|
528
|
|
410
|
529 void
|
|
|
530 mswindows_destroy_selection (Lisp_Object selection)
|
|
404
|
531 {
|
|
410
|
532 Lisp_Object alist_elt;
|
|
|
533
|
|
|
534 /* Do nothing if this isn't for the clipboard. */
|
|
|
535 if (!EQ (selection, QCLIPBOARD))
|
|
|
536 return;
|
|
|
537
|
|
|
538 /* Right. We need to delete everything in Vhandle_alist. */
|
|
|
539 alist_elt = Vhandle_alist;
|
|
|
540
|
|
|
541 for (alist_elt; !NILP (alist_elt); alist_elt = Fcdr (alist_elt))
|
|
|
542 GlobalFree ((HGLOBAL) get_opaque_ptr (XCDR (alist_elt)));
|
|
|
543
|
|
|
544 Vhandle_alist = Qnil;
|
|
|
545 }
|
|
|
546
|
|
|
547 static Lisp_Object
|
|
|
548 mswindows_selection_exists_p (Lisp_Object selection,
|
|
|
549 Lisp_Object selection_type)
|
|
|
550 {
|
|
|
551 /* We used to be picky about the format, but now we support anything. */
|
|
404
|
552 if (EQ (selection, QCLIPBOARD))
|
|
410
|
553 {
|
|
|
554 if (NILP (selection_type))
|
|
|
555 return CountClipboardFormats () ? Qt : Qnil;
|
|
|
556 else
|
|
|
557 return IsClipboardFormatAvailable (symbol_to_ms_cf (selection_type))
|
|
|
558 ? Qt : Qnil;
|
|
|
559 }
|
|
404
|
560 else
|
|
|
561 return Qnil;
|
|
286
|
562 }
|
|
|
563
|
|
221
|
564
|
|
|
565 /************************************************************************/
|
|
|
566 /* initialization */
|
|
|
567 /************************************************************************/
|
|
|
568
|
|
|
569 void
|
|
398
|
570 console_type_create_select_mswindows (void)
|
|
|
571 {
|
|
|
572 CONSOLE_HAS_METHOD (mswindows, own_selection);
|
|
|
573 CONSOLE_HAS_METHOD (mswindows, disown_selection);
|
|
404
|
574 CONSOLE_HAS_METHOD (mswindows, selection_exists_p);
|
|
398
|
575 CONSOLE_HAS_METHOD (mswindows, get_foreign_selection);
|
|
410
|
576 CONSOLE_HAS_METHOD (mswindows, available_selection_types);
|
|
|
577 CONSOLE_HAS_METHOD (mswindows, register_selection_data_type);
|
|
|
578 CONSOLE_HAS_METHOD (mswindows, selection_data_type_name);
|
|
398
|
579 }
|
|
|
580
|
|
|
581 void
|
|
221
|
582 syms_of_select_mswindows (void)
|
|
|
583 {
|
|
|
584 }
|
|
|
585
|
|
|
586 void
|
|
|
587 vars_of_select_mswindows (void)
|
|
|
588 {
|
|
410
|
589 /* Initialise Vhandle_alist */
|
|
|
590 Vhandle_alist = Qnil;
|
|
|
591 staticpro (&Vhandle_alist);
|
|
221
|
592 }
|
