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428
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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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26 Rewritten for mswindows by Jonathan Harris, December 1997 for 21.0.
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442
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27 Hacked by Alastair Houghton, July 2000 for enhanced clipboard support.
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28 */
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428
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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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430
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32 #include "frame.h"
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428
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33 #include "select.h"
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442
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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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428
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37
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38 #include "console-msw.h"
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39
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442
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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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42
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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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428
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65 {
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442
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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 #ifdef CF_DIBV5
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86 if (EQ (value, QCF_DIBV5)) return CF_DIBV5;
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87 #endif
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88 if (EQ (value, QCF_PALETTE)) return CF_PALETTE;
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89 if (EQ (value, QCF_PENDATA)) return CF_PENDATA;
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90 if (EQ (value, QCF_RIFF)) return CF_RIFF;
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91 if (EQ (value, QCF_WAVE)) return CF_WAVE;
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92 if (EQ (value, QCF_UNICODETEXT)) return CF_UNICODETEXT;
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93 if (EQ (value, QCF_ENHMETAFILE)) return CF_ENHMETAFILE;
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94 if (EQ (value, QCF_HDROP)) return CF_HDROP;
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95 if (EQ (value, QCF_LOCALE)) return CF_LOCALE;
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96 if (EQ (value, QCF_OWNERDISPLAY)) return CF_OWNERDISPLAY;
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97 if (EQ (value, QCF_DSPTEXT)) return CF_DSPTEXT;
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98 if (EQ (value, QCF_DSPBITMAP)) return CF_DSPBITMAP;
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99 if (EQ (value, QCF_DSPMETAFILEPICT)) return CF_DSPMETAFILEPICT;
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100 if (EQ (value, QCF_DSPENHMETAFILE)) return CF_DSPENHMETAFILE;
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101
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102 return 0;
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103 }
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104
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105 /* This converts an MS-Windows clipboard format to its corresponding
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106 Lisp symbol, or a Lisp integer otherwise. */
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107 static Lisp_Object
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108 ms_cf_to_symbol (UINT format)
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109 {
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110 switch (format)
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111 {
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112 case CF_TEXT: return QCF_TEXT;
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113 case CF_BITMAP: return QCF_BITMAP;
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114 case CF_METAFILEPICT: return QCF_METAFILEPICT;
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115 case CF_SYLK: return QCF_SYLK;
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116 case CF_DIF: return QCF_DIF;
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117 case CF_TIFF: return QCF_TIFF;
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118 case CF_OEMTEXT: return QCF_OEMTEXT;
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119 case CF_DIB: return QCF_DIB;
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120 #ifdef CF_DIBV5
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121 case CF_DIBV5: return QCF_DIBV5;
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122 #endif
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123 case CF_PALETTE: return QCF_PALETTE;
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124 case CF_PENDATA: return QCF_PENDATA;
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125 case CF_RIFF: return QCF_RIFF;
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126 case CF_WAVE: return QCF_WAVE;
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127 case CF_UNICODETEXT: return QCF_UNICODETEXT;
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128 case CF_ENHMETAFILE: return QCF_ENHMETAFILE;
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129 case CF_HDROP: return QCF_HDROP;
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130 case CF_LOCALE: return QCF_LOCALE;
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131 case CF_OWNERDISPLAY: return QCF_OWNERDISPLAY;
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132 case CF_DSPTEXT: return QCF_DSPTEXT;
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133 case CF_DSPBITMAP: return QCF_DSPBITMAP;
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134 case CF_DSPMETAFILEPICT: return QCF_DSPMETAFILEPICT;
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135 case CF_DSPENHMETAFILE: return QCF_DSPENHMETAFILE;
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136 default: return make_int ((int) format);
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137 }
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138 }
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428
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139
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442
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140 /* Test if the specified clipboard format is auto-released by the OS. If
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141 not, we must remember the handle on Vhandle_alist, and free it if
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142 the clipboard is emptied or if we set data with the same format. */
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143 static int
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144 cf_is_autofreed (UINT format)
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145 {
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146 switch (format)
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147 {
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148 /* This list comes from the SDK documentation */
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149 case CF_DSPENHMETAFILE:
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150 case CF_DSPMETAFILEPICT:
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151 case CF_ENHMETAFILE:
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152 case CF_METAFILEPICT:
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153 case CF_BITMAP:
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154 case CF_DSPBITMAP:
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155 case CF_PALETTE:
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156 case CF_DIB:
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157 #ifdef CF_DIBV5
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158 case CF_DIBV5:
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159 #endif
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160 case CF_DSPTEXT:
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161 case CF_OEMTEXT:
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162 case CF_TEXT:
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163 case CF_UNICODETEXT:
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164 return TRUE;
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165
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166 default:
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167 return FALSE;
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168 }
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169 }
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170
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171 /* Do protocol to assert ourself as a selection owner.
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172
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173 Under mswindows, we:
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174
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175 * Only set the clipboard if (eq selection-name 'CLIPBOARD)
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176
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177 * Check if an X atom name has been passed. If so, convert to CF_TEXT
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178 (or CF_UNICODETEXT) remembering to perform LF -> CR-LF conversion.
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179
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180 * Otherwise assume the data is formatted appropriately for the data type
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181 that was passed.
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182
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183 Then set the clipboard as necessary.
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184 */
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185 static Lisp_Object
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186 mswindows_own_selection (Lisp_Object selection_name,
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187 Lisp_Object selection_value,
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188 Lisp_Object how_to_add,
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189 Lisp_Object selection_type)
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190 {
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191 HGLOBAL hValue = NULL;
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192 UINT cfType;
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193 int is_X_type = FALSE;
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194 Lisp_Object cfObject;
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195 Lisp_Object data = Qnil;
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196 int size;
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197 void *src, *dst;
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198 struct frame *f = NULL;
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428
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199
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442
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200 /* Only continue if we're trying to set the clipboard - mswindows doesn't
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201 use the same selection model as X */
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202 if (!EQ (selection_name, QCLIPBOARD))
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203 return Qnil;
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204
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205 /* If this is one of the X-style atom name symbols, or NIL, convert it
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206 as appropriate */
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207 if (NILP (selection_type) || x_sym_p (selection_type))
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208 {
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209 /* Should COMPOUND_TEXT map to CF_UNICODETEXT? */
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210 cfType = CF_TEXT;
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211 cfObject = QCF_TEXT;
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212 is_X_type = TRUE;
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213 }
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214 else
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215 {
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216 cfType = symbol_to_ms_cf (selection_type);
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217
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218 /* Only continue if we can figure out a clipboard type */
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219 if (!cfType)
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220 return Qnil;
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221
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222 cfObject = selection_type;
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223 }
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224
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225 /* Convert things appropriately */
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226 data = select_convert_out (selection_name,
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227 cfObject,
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228 selection_value);
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428
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229
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442
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230 if (NILP (data))
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231 return Qnil;
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232
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233 if (CONSP (data))
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234 {
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235 if (!EQ (XCAR (data), cfObject))
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236 cfType = symbol_to_ms_cf (XCAR (data));
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237
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238 if (!cfType)
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239 return Qnil;
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240
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241 data = XCDR (data);
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242 }
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243
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244 /* We support opaque or string values, but we only mention string
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245 values for now... */
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246 if (!OPAQUEP (data)
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247 && !STRINGP (data))
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248 return Qnil;
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249
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250 /* Compute the data length */
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251 if (OPAQUEP (data))
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252 size = XOPAQUE_SIZE (data);
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253 else
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254 size = XSTRING_LENGTH (data) + 1;
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255
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256 /* Find the frame */
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430
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257 f = selected_frame ();
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442
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258
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259 /* Open the clipboard */
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430
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260 if (!OpenClipboard (FRAME_MSWINDOWS_HANDLE (f)))
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428
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261 return Qnil;
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262
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442
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263 /* Allocate memory */
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264 hValue = GlobalAlloc (GMEM_DDESHARE | GMEM_MOVEABLE, size);
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265
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266 if (!hValue)
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428
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267 {
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268 CloseClipboard ();
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442
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269
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270 return Qnil;
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271 }
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272
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273 /* Copy the data */
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274 if (OPAQUEP (data))
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275 src = XOPAQUE_DATA (data);
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276 else
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277 src = XSTRING_DATA (data);
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278
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279 dst = GlobalLock (hValue);
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280
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281 if (!dst)
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282 {
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283 GlobalFree (hValue);
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284 CloseClipboard ();
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285
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428
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286 return Qnil;
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287 }
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442
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288
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289 memcpy (dst, src, size);
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290
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291 GlobalUnlock (hValue);
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292
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293 /* Empty the clipboard if we're replacing everything */
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294 if (NILP (how_to_add) || EQ (how_to_add, Qreplace_all))
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428
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295 {
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442
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296 if (!EmptyClipboard ())
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428
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297 {
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442
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298 CloseClipboard ();
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299 GlobalFree (hValue);
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300
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301 return Qnil;
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302 }
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428
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303 }
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442
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304
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305 /* Append is currently handled in select.el; perhaps this should change,
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306 but it only really makes sense for ordinary text in any case... */
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307
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308 SetClipboardData (cfType, hValue);
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309
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310 if (!cf_is_autofreed (cfType))
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311 {
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312 Lisp_Object alist_elt = Qnil, rest;
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313 Lisp_Object cfType_int = make_int (cfType);
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314
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315 /* First check if there's an element in the alist for this type
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316 already. */
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317 alist_elt = assq_no_quit (cfType_int, Vhandle_alist);
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318
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319 /* Add an element to the alist */
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320 Vhandle_alist = Fcons (Fcons (cfType_int, make_opaque_ptr (hValue)),
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321 Vhandle_alist);
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322
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323 if (!NILP (alist_elt))
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324 {
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325 /* Free the original handle */
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326 GlobalFree ((HGLOBAL) get_opaque_ptr (XCDR (alist_elt)));
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327
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328 /* Remove the original one (adding first makes life easier, because
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329 we don't have to special case this being the first element) */
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330 for (rest = Vhandle_alist; !NILP (rest); rest = Fcdr (rest))
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331 if (EQ (cfType_int, Fcar (XCDR (rest))))
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332 {
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333 XCDR (rest) = Fcdr (XCDR (rest));
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334 break;
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335 }
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336 }
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337 }
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338
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428
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339 CloseClipboard ();
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442
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340
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341 /* #### Should really return a time, though this is because of the
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342 X model (by the looks of things) */
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343 return Qnil;
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428
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344 }
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345
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346 static Lisp_Object
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442
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347 mswindows_available_selection_types (Lisp_Object selection_name)
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348 {
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349 Lisp_Object types = Qnil;
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350 UINT format = 0;
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351 struct frame *f = NULL;
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352
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353 if (!EQ (selection_name, QCLIPBOARD))
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354 return Qnil;
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355
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356 /* Find the frame */
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357 f = selected_frame ();
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358
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359 /* Open the clipboard */
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360 if (!OpenClipboard (FRAME_MSWINDOWS_HANDLE (f)))
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361 return Qnil;
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362
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363 /* #### ajh - Should there be an unwind-protect handler around this?
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364 It could (well it probably won't, but it's always better to
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365 be safe) run out of memory and leave the clipboard open... */
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366
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367 while ((format = EnumClipboardFormats (format)))
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368 types = Fcons (ms_cf_to_symbol (format), types);
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369
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370 /* Close it */
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371 CloseClipboard ();
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372
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373 return types;
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374 }
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375
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376 static Lisp_Object
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377 mswindows_register_selection_data_type (Lisp_Object type_name)
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|
428
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378 {
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442
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379 /* Type already checked in select.c */
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380 const char *name = XSTRING_DATA (type_name);
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381 UINT format;
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382
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383 format = RegisterClipboardFormat (name);
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384
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385 if (format)
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386 return make_int ((int) format);
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387 else
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388 return Qnil;
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389 }
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390
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391 static Lisp_Object
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392 mswindows_selection_data_type_name (Lisp_Object type_id)
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|
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393 {
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394 UINT format;
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|
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395 int numchars;
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|
|
396 char name_buf[128];
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397
|
|
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398 /* If it's an integer, convert to a symbol if appropriate */
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|
|
399 if (INTP (type_id))
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400 type_id = ms_cf_to_symbol (XINT (type_id));
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401
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|
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402 /* If this is a symbol, return it */
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|
|
403 if (SYMBOLP (type_id))
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|
404 return type_id;
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|
|
405
|
|
|
406 /* Find the format code */
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|
|
407 format = symbol_to_ms_cf (type_id);
|
|
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408
|
|
|
409 if (!format)
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|
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410 return Qnil;
|
|
|
411
|
|
|
412 /* Microsoft, stupid Microsoft */
|
|
|
413 numchars = GetClipboardFormatName (format, name_buf, 128);
|
|
|
414
|
|
|
415 if (numchars)
|
|
|
416 {
|
|
|
417 Lisp_Object name;
|
|
|
418
|
|
|
419 /* Do this properly - though we could support UNICODE (UCS-2) if
|
|
|
420 MULE could hack it. */
|
|
|
421 name = make_ext_string (name_buf, numchars,
|
|
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422 Fget_coding_system (Qraw_text));
|
|
|
423
|
|
|
424 return name;
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|
|
425 }
|
|
428
|
426
|
|
|
427 return Qnil;
|
|
|
428 }
|
|
|
429
|
|
442
|
430 static Lisp_Object
|
|
|
431 mswindows_get_foreign_selection (Lisp_Object selection_symbol,
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|
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432 Lisp_Object target_type)
|
|
428
|
433 {
|
|
442
|
434 HGLOBAL hValue = NULL;
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|
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435 UINT cfType;
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|
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436 Lisp_Object cfObject = Qnil, ret = Qnil, value = Qnil;
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|
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437 int is_X_type = FALSE;
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|
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438 int size;
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|
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439 void *data;
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|
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440 struct frame *f = NULL;
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|
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441 struct gcpro gcpro1;
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|
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442
|
|
|
443 /* Only continue if we're trying to read the clipboard - mswindows doesn't
|
|
|
444 use the same selection model as X */
|
|
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445 if (!EQ (selection_symbol, QCLIPBOARD))
|
|
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446 return Qnil;
|
|
428
|
447
|
|
442
|
448 /* If this is one of the X-style atom name symbols, or NIL, convert it
|
|
|
449 as appropriate */
|
|
|
450 if (NILP (target_type) || x_sym_p (target_type))
|
|
|
451 {
|
|
|
452 /* Should COMPOUND_TEXT map to CF_UNICODETEXT? */
|
|
|
453 cfType = CF_TEXT;
|
|
|
454 cfObject = QCF_TEXT;
|
|
|
455 is_X_type = TRUE;
|
|
|
456 }
|
|
|
457 else
|
|
|
458 {
|
|
|
459 cfType = symbol_to_ms_cf (target_type);
|
|
|
460
|
|
|
461 /* Only continue if we can figure out a clipboard type */
|
|
|
462 if (!cfType)
|
|
|
463 return Qnil;
|
|
|
464
|
|
|
465 cfObject = ms_cf_to_symbol (cfType);
|
|
|
466 }
|
|
|
467
|
|
|
468 /* Find the frame */
|
|
|
469 f = selected_frame ();
|
|
|
470
|
|
|
471 /* Open the clipboard */
|
|
|
472 if (!OpenClipboard (FRAME_MSWINDOWS_HANDLE (f)))
|
|
428
|
473 return Qnil;
|
|
|
474
|
|
442
|
475 /* Read the clipboard */
|
|
|
476 hValue = GetClipboardData (cfType);
|
|
|
477
|
|
|
478 if (!hValue)
|
|
428
|
479 {
|
|
442
|
480 CloseClipboard ();
|
|
428
|
481
|
|
442
|
482 return Qnil;
|
|
|
483 }
|
|
428
|
484
|
|
442
|
485 /* Find the data */
|
|
|
486 size = GlobalSize (hValue);
|
|
|
487 data = GlobalLock (hValue);
|
|
428
|
488
|
|
442
|
489 if (!data)
|
|
|
490 {
|
|
|
491 CloseClipboard ();
|
|
|
492
|
|
|
493 return Qnil;
|
|
428
|
494 }
|
|
|
495
|
|
442
|
496 /* Place it in a Lisp string */
|
|
|
497 TO_INTERNAL_FORMAT (DATA, (data, size),
|
|
|
498 LISP_STRING, ret,
|
|
|
499 Qbinary);
|
|
|
500
|
|
|
501 GlobalUnlock (data);
|
|
428
|
502 CloseClipboard ();
|
|
|
503
|
|
442
|
504 GCPRO1 (ret);
|
|
428
|
505
|
|
442
|
506 /* Convert this to the appropriate type. If we can't find anything,
|
|
|
507 then we return a cons of the form (DATA-TYPE . STRING), where the
|
|
|
508 string contains the raw binary data. */
|
|
|
509 value = select_convert_in (selection_symbol,
|
|
|
510 cfObject,
|
|
|
511 ret);
|
|
428
|
512
|
|
442
|
513 UNGCPRO;
|
|
430
|
514
|
|
442
|
515 if (NILP (value))
|
|
|
516 return Fcons (cfObject, ret);
|
|
|
517 else
|
|
|
518 return value;
|
|
428
|
519 }
|
|
|
520
|
|
|
521 static void
|
|
|
522 mswindows_disown_selection (Lisp_Object selection, Lisp_Object timeval)
|
|
|
523 {
|
|
|
524 if (EQ (selection, QCLIPBOARD))
|
|
442
|
525 {
|
|
|
526 BOOL success = OpenClipboard (NULL);
|
|
|
527 if (success)
|
|
|
528 {
|
|
|
529 success = EmptyClipboard ();
|
|
|
530 /* Close it regardless of whether empty worked. */
|
|
|
531 if (!CloseClipboard ())
|
|
|
532 success = FALSE;
|
|
|
533 }
|
|
|
534
|
|
|
535 /* #### return success ? Qt : Qnil; */
|
|
|
536 }
|
|
|
537 }
|
|
|
538
|
|
|
539 void
|
|
|
540 mswindows_destroy_selection (Lisp_Object selection)
|
|
|
541 {
|
|
|
542 /* Do nothing if this isn't for the clipboard. */
|
|
|
543 if (!EQ (selection, QCLIPBOARD))
|
|
|
544 return;
|
|
|
545
|
|
|
546 /* Right. We need to delete everything in Vhandle_alist. */
|
|
|
547 {
|
|
|
548 LIST_LOOP_2 (elt, Vhandle_alist)
|
|
|
549 GlobalFree ((HGLOBAL) get_opaque_ptr (XCDR (elt)));
|
|
|
550 }
|
|
|
551
|
|
|
552 Vhandle_alist = Qnil;
|
|
|
553 }
|
|
|
554
|
|
|
555 static Lisp_Object
|
|
|
556 mswindows_selection_exists_p (Lisp_Object selection,
|
|
|
557 Lisp_Object selection_type)
|
|
|
558 {
|
|
|
559 /* We used to be picky about the format, but now we support anything. */
|
|
|
560 if (EQ (selection, QCLIPBOARD))
|
|
|
561 {
|
|
|
562 if (NILP (selection_type))
|
|
|
563 return CountClipboardFormats () ? Qt : Qnil;
|
|
|
564 else
|
|
|
565 return IsClipboardFormatAvailable (symbol_to_ms_cf (selection_type))
|
|
|
566 ? Qt : Qnil;
|
|
|
567 }
|
|
|
568 else
|
|
|
569 return Qnil;
|
|
428
|
570 }
|
|
|
571
|
|
|
572
|
|
|
573 /************************************************************************/
|
|
|
574 /* initialization */
|
|
|
575 /************************************************************************/
|
|
|
576
|
|
|
577 void
|
|
|
578 console_type_create_select_mswindows (void)
|
|
|
579 {
|
|
|
580 CONSOLE_HAS_METHOD (mswindows, own_selection);
|
|
|
581 CONSOLE_HAS_METHOD (mswindows, disown_selection);
|
|
442
|
582 CONSOLE_HAS_METHOD (mswindows, selection_exists_p);
|
|
428
|
583 CONSOLE_HAS_METHOD (mswindows, get_foreign_selection);
|
|
442
|
584 CONSOLE_HAS_METHOD (mswindows, available_selection_types);
|
|
|
585 CONSOLE_HAS_METHOD (mswindows, register_selection_data_type);
|
|
|
586 CONSOLE_HAS_METHOD (mswindows, selection_data_type_name);
|
|
428
|
587 }
|
|
|
588
|
|
|
589 void
|
|
|
590 syms_of_select_mswindows (void)
|
|
|
591 {
|
|
|
592 }
|
|
|
593
|
|
|
594 void
|
|
|
595 vars_of_select_mswindows (void)
|
|
|
596 {
|
|
442
|
597 /* Initialise Vhandle_alist */
|
|
|
598 Vhandle_alist = Qnil;
|
|
|
599 staticpro (&Vhandle_alist);
|
|
428
|
600 }
|
