1 |
dashley |
69 |
/* $Header$ */
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2 |
dashley |
25 |
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3 |
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/*
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4 |
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* tkWinClipboard.c --
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5 |
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*
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6 |
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* This file contains functions for managing the clipboard.
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7 |
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*
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8 |
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* Copyright (c) 1995-1997 Sun Microsystems, Inc.
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9 |
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* Copyright (c) 1998-2000 by Scriptics Corporation.
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10 |
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*
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11 |
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* See the file "license.terms" for information on usage and redistribution
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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13 |
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*
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14 |
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* RCS: @(#) $Id: tkwinclipboard.c,v 1.1.1.1 2001/06/13 05:11:58 dtashley Exp $
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15 |
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*/
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16 |
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17 |
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#include "tkWinInt.h"
|
18 |
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#include "tkSelect.h"
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19 |
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20 |
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static void UpdateClipboard _ANSI_ARGS_((HWND hwnd));
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21 |
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22 |
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/*
|
23 |
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*----------------------------------------------------------------------
|
24 |
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*
|
25 |
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* TkSelGetSelection --
|
26 |
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*
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27 |
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* Retrieve the specified selection from another process. For
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28 |
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* now, only fetching XA_STRING from CLIPBOARD is supported.
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29 |
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* Eventually other types should be allowed.
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30 |
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*
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31 |
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* Results:
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32 |
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* The return value is a standard Tcl return value.
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33 |
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* If an error occurs (such as no selection exists)
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34 |
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* then an error message is left in the interp's result.
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35 |
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*
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36 |
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* Side effects:
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37 |
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* None.
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38 |
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*
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39 |
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*----------------------------------------------------------------------
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40 |
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*/
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41 |
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42 |
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int
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43 |
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TkSelGetSelection(interp, tkwin, selection, target, proc, clientData)
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44 |
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Tcl_Interp *interp; /* Interpreter to use for reporting
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45 |
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* errors. */
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46 |
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Tk_Window tkwin; /* Window on whose behalf to retrieve
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47 |
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* the selection (determines display
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48 |
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* from which to retrieve). */
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49 |
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Atom selection; /* Selection to retrieve. */
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50 |
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Atom target; /* Desired form in which selection
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51 |
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* is to be returned. */
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52 |
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Tk_GetSelProc *proc; /* Procedure to call to process the
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53 |
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* selection, once it has been retrieved. */
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54 |
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ClientData clientData; /* Arbitrary value to pass to proc. */
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55 |
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{
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56 |
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char *data, *destPtr;
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57 |
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Tcl_DString ds;
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58 |
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HGLOBAL handle;
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59 |
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Tcl_Encoding encoding;
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60 |
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int result, locale;
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61 |
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62 |
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if ((selection != Tk_InternAtom(tkwin, "CLIPBOARD"))
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63 |
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|| (target != XA_STRING)
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64 |
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|| !OpenClipboard(NULL)) {
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65 |
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goto error;
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66 |
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}
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67 |
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68 |
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/*
|
69 |
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* Attempt to get the data in Unicode form if available as this is
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70 |
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* less work that CF_TEXT.
|
71 |
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*/
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72 |
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73 |
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result = TCL_ERROR;
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74 |
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if (IsClipboardFormatAvailable(CF_UNICODETEXT)) {
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75 |
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handle = GetClipboardData(CF_UNICODETEXT);
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76 |
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if (!handle) {
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77 |
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CloseClipboard();
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78 |
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goto error;
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79 |
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}
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80 |
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data = GlobalLock(handle);
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81 |
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Tcl_DStringInit(&ds);
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82 |
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Tcl_UniCharToUtfDString((Tcl_UniChar *)data,
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83 |
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Tcl_UniCharLen((Tcl_UniChar *)data), &ds);
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84 |
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GlobalUnlock(handle);
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85 |
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} else if (IsClipboardFormatAvailable(CF_TEXT)) {
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86 |
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/*
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87 |
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* Determine the encoding to use to convert this text.
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88 |
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*/
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89 |
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|
90 |
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if (IsClipboardFormatAvailable(CF_LOCALE)) {
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91 |
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handle = GetClipboardData(CF_LOCALE);
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92 |
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if (!handle) {
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93 |
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CloseClipboard();
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94 |
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goto error;
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95 |
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}
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96 |
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97 |
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/*
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98 |
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* Get the locale identifier, determine the proper code page
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99 |
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* to use, and find the corresponding encoding.
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100 |
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*/
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101 |
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|
102 |
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Tcl_DStringInit(&ds);
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103 |
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Tcl_DStringAppend(&ds, "cp######", -1);
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104 |
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data = GlobalLock(handle);
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105 |
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106 |
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107 |
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/*
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108 |
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* Even though the documentation claims that GetLocaleInfo
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109 |
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* expects an LCID, on Windows 9x it really seems to expect
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110 |
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* a LanguageID.
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111 |
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*/
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112 |
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113 |
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locale = LANGIDFROMLCID(*((int*)data));
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114 |
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GetLocaleInfo(locale, LOCALE_IDEFAULTANSICODEPAGE,
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115 |
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Tcl_DStringValue(&ds)+2, Tcl_DStringLength(&ds)-2);
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116 |
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GlobalUnlock(handle);
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117 |
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118 |
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encoding = Tcl_GetEncoding(NULL, Tcl_DStringValue(&ds));
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119 |
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Tcl_DStringFree(&ds);
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120 |
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} else {
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121 |
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encoding = NULL;
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122 |
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}
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123 |
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124 |
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/*
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125 |
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* Fetch the text and convert it to UTF.
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126 |
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*/
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127 |
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128 |
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handle = GetClipboardData(CF_TEXT);
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129 |
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if (!handle) {
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130 |
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if (encoding) {
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131 |
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Tcl_FreeEncoding(encoding);
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132 |
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}
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133 |
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CloseClipboard();
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134 |
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goto error;
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135 |
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}
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136 |
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data = GlobalLock(handle);
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137 |
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Tcl_ExternalToUtfDString(encoding, data, -1, &ds);
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138 |
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GlobalUnlock(handle);
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139 |
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if (encoding) {
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140 |
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Tcl_FreeEncoding(encoding);
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141 |
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}
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142 |
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143 |
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} else {
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144 |
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CloseClipboard();
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145 |
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goto error;
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146 |
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}
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147 |
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148 |
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/*
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149 |
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* Translate CR/LF to LF.
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150 |
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*/
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151 |
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152 |
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data = destPtr = Tcl_DStringValue(&ds);
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153 |
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while (*data) {
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154 |
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if (data[0] == '\r' && data[1] == '\n') {
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155 |
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data++;
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156 |
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} else {
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157 |
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*destPtr++ = *data++;
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158 |
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}
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159 |
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}
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160 |
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*destPtr = '\0';
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161 |
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162 |
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/*
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163 |
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* Pass the data off to the selection procedure.
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164 |
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*/
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165 |
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166 |
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result = (*proc)(clientData, interp, Tcl_DStringValue(&ds));
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167 |
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Tcl_DStringFree(&ds);
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168 |
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CloseClipboard();
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169 |
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return result;
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170 |
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171 |
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error:
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172 |
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Tcl_AppendResult(interp, Tk_GetAtomName(tkwin, selection),
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173 |
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" selection doesn't exist or form \"",
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174 |
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Tk_GetAtomName(tkwin, target),
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175 |
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"\" not defined", (char *) NULL);
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176 |
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return TCL_ERROR;
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177 |
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}
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178 |
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179 |
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/*
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180 |
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*----------------------------------------------------------------------
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181 |
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*
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182 |
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* TkSetSelectionOwner --
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183 |
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*
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184 |
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* This function claims ownership of the specified selection.
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185 |
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* If the selection is CLIPBOARD, then we empty the system
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186 |
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* clipboard.
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187 |
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*
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188 |
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* Results:
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189 |
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* None.
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190 |
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*
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191 |
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* Side effects:
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192 |
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* Empties the system clipboard, and claims ownership.
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193 |
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*
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194 |
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*----------------------------------------------------------------------
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195 |
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*/
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196 |
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197 |
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void
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198 |
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XSetSelectionOwner(display, selection, owner, time)
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199 |
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Display* display;
|
200 |
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Atom selection;
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201 |
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Window owner;
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202 |
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Time time;
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203 |
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{
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204 |
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HWND hwnd = owner ? TkWinGetHWND(owner) : NULL;
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205 |
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Tk_Window tkwin;
|
206 |
|
|
|
207 |
|
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/*
|
208 |
|
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* This is a gross hack because the Tk_InternAtom interface is broken.
|
209 |
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* It expects a Tk_Window, even though it only needs a Tk_Display.
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210 |
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*/
|
211 |
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|
212 |
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tkwin = (Tk_Window) TkGetMainInfoList()->winPtr;
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213 |
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214 |
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if (selection == Tk_InternAtom(tkwin, "CLIPBOARD")) {
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215 |
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216 |
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/*
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217 |
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* Only claim and empty the clipboard if we aren't already the
|
218 |
|
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* owner of the clipboard.
|
219 |
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*/
|
220 |
|
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|
221 |
|
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if (GetClipboardOwner() != hwnd) {
|
222 |
|
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UpdateClipboard(hwnd);
|
223 |
|
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}
|
224 |
|
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}
|
225 |
|
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}
|
226 |
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|
227 |
|
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/*
|
228 |
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*----------------------------------------------------------------------
|
229 |
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*
|
230 |
|
|
* TkWinClipboardRender --
|
231 |
|
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*
|
232 |
|
|
* This function supplies the contents of the clipboard in
|
233 |
|
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* response to a WM_RENDERFORMAT message.
|
234 |
|
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*
|
235 |
|
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* Results:
|
236 |
|
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* None.
|
237 |
|
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*
|
238 |
|
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* Side effects:
|
239 |
|
|
* Sets the contents of the clipboard.
|
240 |
|
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*
|
241 |
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*----------------------------------------------------------------------
|
242 |
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*/
|
243 |
|
|
|
244 |
|
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void
|
245 |
|
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TkWinClipboardRender(dispPtr, format)
|
246 |
|
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TkDisplay *dispPtr;
|
247 |
|
|
UINT format;
|
248 |
|
|
{
|
249 |
|
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TkClipboardTarget *targetPtr;
|
250 |
|
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TkClipboardBuffer *cbPtr;
|
251 |
|
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HGLOBAL handle;
|
252 |
|
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char *buffer, *p, *rawText, *endPtr;
|
253 |
|
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int length;
|
254 |
|
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Tcl_DString ds;
|
255 |
|
|
|
256 |
|
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for (targetPtr = dispPtr->clipTargetPtr; targetPtr != NULL;
|
257 |
|
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targetPtr = targetPtr->nextPtr) {
|
258 |
|
|
if (targetPtr->type == XA_STRING)
|
259 |
|
|
break;
|
260 |
|
|
}
|
261 |
|
|
|
262 |
|
|
/*
|
263 |
|
|
* Count the number of newlines so we can add space for them in
|
264 |
|
|
* the resulting string.
|
265 |
|
|
*/
|
266 |
|
|
|
267 |
|
|
length = 0;
|
268 |
|
|
if (targetPtr != NULL) {
|
269 |
|
|
for (cbPtr = targetPtr->firstBufferPtr; cbPtr != NULL;
|
270 |
|
|
cbPtr = cbPtr->nextPtr) {
|
271 |
|
|
length += cbPtr->length;
|
272 |
|
|
for (p = cbPtr->buffer, endPtr = p + cbPtr->length;
|
273 |
|
|
p < endPtr; p++) {
|
274 |
|
|
if (*p == '\n') {
|
275 |
|
|
length++;
|
276 |
|
|
}
|
277 |
|
|
}
|
278 |
|
|
}
|
279 |
|
|
}
|
280 |
|
|
|
281 |
|
|
/*
|
282 |
|
|
* Copy the data and change EOL characters.
|
283 |
|
|
*/
|
284 |
|
|
|
285 |
|
|
buffer = rawText = ckalloc(length + 1);
|
286 |
|
|
if (targetPtr != NULL) {
|
287 |
|
|
for (cbPtr = targetPtr->firstBufferPtr; cbPtr != NULL;
|
288 |
|
|
cbPtr = cbPtr->nextPtr) {
|
289 |
|
|
for (p = cbPtr->buffer, endPtr = p + cbPtr->length;
|
290 |
|
|
p < endPtr; p++) {
|
291 |
|
|
if (*p == '\n') {
|
292 |
|
|
*buffer++ = '\r';
|
293 |
|
|
}
|
294 |
|
|
*buffer++ = *p;
|
295 |
|
|
}
|
296 |
|
|
}
|
297 |
|
|
}
|
298 |
|
|
*buffer = '\0';
|
299 |
|
|
|
300 |
|
|
/*
|
301 |
|
|
* Depending on the platform, turn the data into Unicode or the
|
302 |
|
|
* system encoding before placing it on the clipboard.
|
303 |
|
|
*/
|
304 |
|
|
|
305 |
|
|
if (TkWinGetPlatformId() == VER_PLATFORM_WIN32_NT) {
|
306 |
|
|
Tcl_DStringInit(&ds);
|
307 |
|
|
Tcl_UtfToUniCharDString(rawText, -1, &ds);
|
308 |
|
|
ckfree(rawText);
|
309 |
|
|
handle = GlobalAlloc(GMEM_MOVEABLE|GMEM_DDESHARE,
|
310 |
|
|
Tcl_DStringLength(&ds)+2);
|
311 |
|
|
if (!handle) {
|
312 |
|
|
Tcl_DStringFree(&ds);
|
313 |
|
|
return;
|
314 |
|
|
}
|
315 |
|
|
buffer = GlobalLock(handle);
|
316 |
|
|
memcpy(buffer, Tcl_DStringValue(&ds), Tcl_DStringLength(&ds) + 2);
|
317 |
|
|
GlobalUnlock(handle);
|
318 |
|
|
Tcl_DStringFree(&ds);
|
319 |
|
|
SetClipboardData(CF_UNICODETEXT, handle);
|
320 |
|
|
} else {
|
321 |
|
|
Tcl_UtfToExternalDString(NULL, rawText, -1, &ds);
|
322 |
|
|
ckfree(rawText);
|
323 |
|
|
handle = GlobalAlloc(GMEM_MOVEABLE|GMEM_DDESHARE,
|
324 |
|
|
Tcl_DStringLength(&ds)+1);
|
325 |
|
|
if (!handle) {
|
326 |
|
|
Tcl_DStringFree(&ds);
|
327 |
|
|
return;
|
328 |
|
|
}
|
329 |
|
|
buffer = GlobalLock(handle);
|
330 |
|
|
memcpy(buffer, Tcl_DStringValue(&ds), Tcl_DStringLength(&ds) + 1);
|
331 |
|
|
GlobalUnlock(handle);
|
332 |
|
|
Tcl_DStringFree(&ds);
|
333 |
|
|
SetClipboardData(CF_TEXT, handle);
|
334 |
|
|
}
|
335 |
|
|
|
336 |
|
|
return;
|
337 |
|
|
}
|
338 |
|
|
|
339 |
|
|
/*
|
340 |
|
|
*----------------------------------------------------------------------
|
341 |
|
|
*
|
342 |
|
|
* TkSelUpdateClipboard --
|
343 |
|
|
*
|
344 |
|
|
* This function is called to force the clipboard to be updated
|
345 |
|
|
* after new data is added.
|
346 |
|
|
*
|
347 |
|
|
* Results:
|
348 |
|
|
* None.
|
349 |
|
|
*
|
350 |
|
|
* Side effects:
|
351 |
|
|
* Clears the current contents of the clipboard.
|
352 |
|
|
*
|
353 |
|
|
*----------------------------------------------------------------------
|
354 |
|
|
*/
|
355 |
|
|
|
356 |
|
|
void
|
357 |
|
|
TkSelUpdateClipboard(winPtr, targetPtr)
|
358 |
|
|
TkWindow *winPtr;
|
359 |
|
|
TkClipboardTarget *targetPtr;
|
360 |
|
|
{
|
361 |
|
|
HWND hwnd = TkWinGetHWND(winPtr->window);
|
362 |
|
|
UpdateClipboard(hwnd);
|
363 |
|
|
}
|
364 |
|
|
|
365 |
|
|
/*
|
366 |
|
|
*----------------------------------------------------------------------
|
367 |
|
|
*
|
368 |
|
|
* UpdateClipboard --
|
369 |
|
|
*
|
370 |
|
|
* Take ownership of the clipboard, clear it, and indicate to the
|
371 |
|
|
* system the supported formats.
|
372 |
|
|
*
|
373 |
|
|
* Results:
|
374 |
|
|
* None.
|
375 |
|
|
*
|
376 |
|
|
* Side effects:
|
377 |
|
|
* None.
|
378 |
|
|
*
|
379 |
|
|
*----------------------------------------------------------------------
|
380 |
|
|
*/
|
381 |
|
|
|
382 |
|
|
static void
|
383 |
|
|
UpdateClipboard(hwnd)
|
384 |
|
|
HWND hwnd;
|
385 |
|
|
{
|
386 |
|
|
TkWinUpdatingClipboard(TRUE);
|
387 |
|
|
OpenClipboard(hwnd);
|
388 |
|
|
EmptyClipboard();
|
389 |
|
|
|
390 |
|
|
/*
|
391 |
|
|
* CF_UNICODETEXT is only supported on NT, but it it is prefered
|
392 |
|
|
* when possible.
|
393 |
|
|
*/
|
394 |
|
|
|
395 |
|
|
if (TkWinGetPlatformId() == VER_PLATFORM_WIN32_NT) {
|
396 |
|
|
SetClipboardData(CF_UNICODETEXT, NULL);
|
397 |
|
|
} else {
|
398 |
|
|
SetClipboardData(CF_TEXT, NULL);
|
399 |
|
|
}
|
400 |
|
|
CloseClipboard();
|
401 |
|
|
TkWinUpdatingClipboard(FALSE);
|
402 |
|
|
}
|
403 |
|
|
|
404 |
|
|
/*
|
405 |
|
|
*--------------------------------------------------------------
|
406 |
|
|
*
|
407 |
|
|
* TkSelEventProc --
|
408 |
|
|
*
|
409 |
|
|
* This procedure is invoked whenever a selection-related
|
410 |
|
|
* event occurs.
|
411 |
|
|
*
|
412 |
|
|
* Results:
|
413 |
|
|
* None.
|
414 |
|
|
*
|
415 |
|
|
* Side effects:
|
416 |
|
|
* Lots: depends on the type of event.
|
417 |
|
|
*
|
418 |
|
|
*--------------------------------------------------------------
|
419 |
|
|
*/
|
420 |
|
|
|
421 |
|
|
void
|
422 |
|
|
TkSelEventProc(tkwin, eventPtr)
|
423 |
|
|
Tk_Window tkwin; /* Window for which event was
|
424 |
|
|
* targeted. */
|
425 |
|
|
register XEvent *eventPtr; /* X event: either SelectionClear,
|
426 |
|
|
* SelectionRequest, or
|
427 |
|
|
* SelectionNotify. */
|
428 |
|
|
{
|
429 |
|
|
if (eventPtr->type == SelectionClear) {
|
430 |
|
|
TkSelClearSelection(tkwin, eventPtr);
|
431 |
|
|
}
|
432 |
|
|
}
|
433 |
|
|
|
434 |
|
|
/*
|
435 |
|
|
*----------------------------------------------------------------------
|
436 |
|
|
*
|
437 |
|
|
* TkSelPropProc --
|
438 |
|
|
*
|
439 |
|
|
* This procedure is invoked when property-change events
|
440 |
|
|
* occur on windows not known to the toolkit. This is a stub
|
441 |
|
|
* function under Windows.
|
442 |
|
|
*
|
443 |
|
|
* Results:
|
444 |
|
|
* None.
|
445 |
|
|
*
|
446 |
|
|
* Side effects:
|
447 |
|
|
* None.
|
448 |
|
|
*
|
449 |
|
|
*----------------------------------------------------------------------
|
450 |
|
|
*/
|
451 |
|
|
|
452 |
|
|
void
|
453 |
|
|
TkSelPropProc(eventPtr)
|
454 |
|
|
register XEvent *eventPtr; /* X PropertyChange event. */
|
455 |
|
|
{
|
456 |
|
|
}
|
457 |
|
|
|
458 |
dashley |
69 |
/* End of tkwinclipboard.c */
|