1 |
dashley |
71 |
/* $Header$ */ |
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/* |
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* tkGet.c -- |
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* |
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* This file contains a number of "Tk_GetXXX" procedures, which |
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* parse text strings into useful forms for Tk. This file has |
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* the simpler procedures, like Tk_GetDirection and Tk_GetUid. |
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* The more complex procedures like Tk_GetColor are in separate |
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* files. |
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* |
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* Copyright (c) 1991-1994 The Regents of the University of California. |
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* Copyright (c) 1994-1997 Sun Microsystems, Inc. |
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* |
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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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* |
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* RCS: @(#) $Id: tkget.c,v 1.1.1.1 2001/06/13 05:01:24 dtashley Exp $ |
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*/ |
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#include "tkInt.h" |
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#include "tkPort.h" |
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/* |
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* One of these structures is created per thread to store |
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* thread-specific data. In this case, it is used to house the |
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* Tk_Uid structs used by each thread. The "dataKey" below is |
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* used to locate the ThreadSpecificData for the current thread. |
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*/ |
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typedef struct ThreadSpecificData { |
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int initialized; |
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Tcl_HashTable uidTable; |
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} ThreadSpecificData; |
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static Tcl_ThreadDataKey dataKey; |
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|
37 |
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/* |
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* The following tables defines the string values for reliefs, which are |
39 |
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* used by Tk_GetAnchorFromObj and Tk_GetJustifyFromObj. |
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*/ |
41 |
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42 |
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static char *anchorStrings[] = {"n", "ne", "e", "se", "s", "sw", "w", "nw", |
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"center", (char *) NULL}; |
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static char *justifyStrings[] = {"left", "right", "center", (char *) NULL}; |
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/* |
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*---------------------------------------------------------------------- |
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* |
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* Tk_GetAnchorFromObj -- |
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* |
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* Return a Tk_Anchor value based on the value of the objPtr. |
53 |
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* |
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* Results: |
55 |
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* The return value is a standard Tcl result. If an error occurs during |
56 |
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* conversion, an error message is left in the interpreter's result |
57 |
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* unless "interp" is NULL. |
58 |
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* |
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* Side effects: |
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* The object gets converted by Tcl_GetIndexFromObj. |
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* |
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*---------------------------------------------------------------------- |
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*/ |
64 |
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65 |
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int |
66 |
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Tk_GetAnchorFromObj(interp, objPtr, anchorPtr) |
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Tcl_Interp *interp; /* Used for error reporting. */ |
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Tcl_Obj *objPtr; /* The object we are trying to get the |
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* value from. */ |
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Tk_Anchor *anchorPtr; /* Where to place the Tk_Anchor that |
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* corresponds to the string value of |
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* objPtr. */ |
73 |
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{ |
74 |
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int index, code; |
75 |
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|
76 |
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code = Tcl_GetIndexFromObj(interp, objPtr, anchorStrings, "anchor", 0, |
77 |
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&index); |
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if (code == TCL_OK) { |
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*anchorPtr = (Tk_Anchor) index; |
80 |
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} |
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return code; |
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} |
83 |
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84 |
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/* |
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*-------------------------------------------------------------- |
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* |
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* Tk_GetAnchor -- |
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* |
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* Given a string, return the corresponding Tk_Anchor. |
90 |
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* |
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* Results: |
92 |
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* The return value is a standard Tcl return result. If |
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* TCL_OK is returned, then everything went well and the |
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* position is stored at *anchorPtr; otherwise TCL_ERROR |
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* is returned and an error message is left in |
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* the interp's result. |
97 |
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* |
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* Side effects: |
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* None. |
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* |
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*-------------------------------------------------------------- |
102 |
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*/ |
103 |
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104 |
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int |
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Tk_GetAnchor(interp, string, anchorPtr) |
106 |
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Tcl_Interp *interp; /* Use this for error reporting. */ |
107 |
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char *string; /* String describing a direction. */ |
108 |
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Tk_Anchor *anchorPtr; /* Where to store Tk_Anchor corresponding |
109 |
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* to string. */ |
110 |
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{ |
111 |
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switch (string[0]) { |
112 |
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case 'n': |
113 |
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if (string[1] == 0) { |
114 |
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*anchorPtr = TK_ANCHOR_N; |
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return TCL_OK; |
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} else if ((string[1] == 'e') && (string[2] == 0)) { |
117 |
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*anchorPtr = TK_ANCHOR_NE; |
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return TCL_OK; |
119 |
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} else if ((string[1] == 'w') && (string[2] == 0)) { |
120 |
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*anchorPtr = TK_ANCHOR_NW; |
121 |
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return TCL_OK; |
122 |
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} |
123 |
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goto error; |
124 |
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case 's': |
125 |
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if (string[1] == 0) { |
126 |
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*anchorPtr = TK_ANCHOR_S; |
127 |
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return TCL_OK; |
128 |
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} else if ((string[1] == 'e') && (string[2] == 0)) { |
129 |
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*anchorPtr = TK_ANCHOR_SE; |
130 |
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return TCL_OK; |
131 |
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} else if ((string[1] == 'w') && (string[2] == 0)) { |
132 |
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*anchorPtr = TK_ANCHOR_SW; |
133 |
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return TCL_OK; |
134 |
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} else { |
135 |
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goto error; |
136 |
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} |
137 |
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case 'e': |
138 |
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if (string[1] == 0) { |
139 |
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*anchorPtr = TK_ANCHOR_E; |
140 |
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return TCL_OK; |
141 |
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} |
142 |
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goto error; |
143 |
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case 'w': |
144 |
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if (string[1] == 0) { |
145 |
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*anchorPtr = TK_ANCHOR_W; |
146 |
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return TCL_OK; |
147 |
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} |
148 |
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goto error; |
149 |
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case 'c': |
150 |
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if (strncmp(string, "center", strlen(string)) == 0) { |
151 |
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*anchorPtr = TK_ANCHOR_CENTER; |
152 |
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return TCL_OK; |
153 |
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} |
154 |
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goto error; |
155 |
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} |
156 |
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157 |
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error: |
158 |
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Tcl_AppendResult(interp, "bad anchor position \"", string, |
159 |
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"\": must be n, ne, e, se, s, sw, w, nw, or center", |
160 |
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(char *) NULL); |
161 |
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return TCL_ERROR; |
162 |
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} |
163 |
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164 |
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/* |
165 |
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*-------------------------------------------------------------- |
166 |
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* |
167 |
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* Tk_NameOfAnchor -- |
168 |
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* |
169 |
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* Given a Tk_Anchor, return the string that corresponds |
170 |
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* to it. |
171 |
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* |
172 |
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* Results: |
173 |
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* None. |
174 |
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* |
175 |
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* Side effects: |
176 |
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* None. |
177 |
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* |
178 |
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*-------------------------------------------------------------- |
179 |
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*/ |
180 |
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181 |
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char * |
182 |
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Tk_NameOfAnchor(anchor) |
183 |
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Tk_Anchor anchor; /* Anchor for which identifying string |
184 |
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* is desired. */ |
185 |
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{ |
186 |
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switch (anchor) { |
187 |
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case TK_ANCHOR_N: return "n"; |
188 |
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case TK_ANCHOR_NE: return "ne"; |
189 |
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case TK_ANCHOR_E: return "e"; |
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case TK_ANCHOR_SE: return "se"; |
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case TK_ANCHOR_S: return "s"; |
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case TK_ANCHOR_SW: return "sw"; |
193 |
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case TK_ANCHOR_W: return "w"; |
194 |
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case TK_ANCHOR_NW: return "nw"; |
195 |
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case TK_ANCHOR_CENTER: return "center"; |
196 |
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} |
197 |
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return "unknown anchor position"; |
198 |
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} |
199 |
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200 |
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/* |
201 |
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*-------------------------------------------------------------- |
202 |
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* |
203 |
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* Tk_GetJoinStyle -- |
204 |
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* |
205 |
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* Given a string, return the corresponding Tk JoinStyle. |
206 |
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* |
207 |
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* Results: |
208 |
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* The return value is a standard Tcl return result. If |
209 |
|
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* TCL_OK is returned, then everything went well and the |
210 |
|
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* justification is stored at *joinPtr; otherwise |
211 |
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* TCL_ERROR is returned and an error message is left in |
212 |
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* the interp's result. |
213 |
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* |
214 |
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* Side effects: |
215 |
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* None. |
216 |
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* |
217 |
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*-------------------------------------------------------------- |
218 |
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*/ |
219 |
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|
220 |
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int |
221 |
|
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Tk_GetJoinStyle(interp, string, joinPtr) |
222 |
|
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Tcl_Interp *interp; /* Use this for error reporting. */ |
223 |
|
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char *string; /* String describing a justification style. */ |
224 |
|
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int *joinPtr; /* Where to store join style corresponding |
225 |
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* to string. */ |
226 |
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{ |
227 |
|
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int c; |
228 |
|
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size_t length; |
229 |
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|
230 |
|
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c = string[0]; |
231 |
|
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length = strlen(string); |
232 |
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|
233 |
|
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if ((c == 'b') && (strncmp(string, "bevel", length) == 0)) { |
234 |
|
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*joinPtr = JoinBevel; |
235 |
|
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return TCL_OK; |
236 |
|
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} |
237 |
|
|
if ((c == 'm') && (strncmp(string, "miter", length) == 0)) { |
238 |
|
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*joinPtr = JoinMiter; |
239 |
|
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return TCL_OK; |
240 |
|
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} |
241 |
|
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if ((c == 'r') && (strncmp(string, "round", length) == 0)) { |
242 |
|
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*joinPtr = JoinRound; |
243 |
|
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return TCL_OK; |
244 |
|
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} |
245 |
|
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|
246 |
|
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Tcl_AppendResult(interp, "bad join style \"", string, |
247 |
|
|
"\": must be bevel, miter, or round", |
248 |
|
|
(char *) NULL); |
249 |
|
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return TCL_ERROR; |
250 |
|
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} |
251 |
|
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|
252 |
|
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/* |
253 |
|
|
*-------------------------------------------------------------- |
254 |
|
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* |
255 |
|
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* Tk_NameOfJoinStyle -- |
256 |
|
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* |
257 |
|
|
* Given a Tk JoinStyle, return the string that corresponds |
258 |
|
|
* to it. |
259 |
|
|
* |
260 |
|
|
* Results: |
261 |
|
|
* None. |
262 |
|
|
* |
263 |
|
|
* Side effects: |
264 |
|
|
* None. |
265 |
|
|
* |
266 |
|
|
*-------------------------------------------------------------- |
267 |
|
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*/ |
268 |
|
|
|
269 |
|
|
char * |
270 |
|
|
Tk_NameOfJoinStyle(join) |
271 |
|
|
int join; /* Join style for which identifying string |
272 |
|
|
* is desired. */ |
273 |
|
|
{ |
274 |
|
|
switch (join) { |
275 |
|
|
case JoinBevel: return "bevel"; |
276 |
|
|
case JoinMiter: return "miter"; |
277 |
|
|
case JoinRound: return "round"; |
278 |
|
|
} |
279 |
|
|
return "unknown join style"; |
280 |
|
|
} |
281 |
|
|
|
282 |
|
|
/* |
283 |
|
|
*-------------------------------------------------------------- |
284 |
|
|
* |
285 |
|
|
* Tk_GetCapStyle -- |
286 |
|
|
* |
287 |
|
|
* Given a string, return the corresponding Tk CapStyle. |
288 |
|
|
* |
289 |
|
|
* Results: |
290 |
|
|
* The return value is a standard Tcl return result. If |
291 |
|
|
* TCL_OK is returned, then everything went well and the |
292 |
|
|
* justification is stored at *capPtr; otherwise |
293 |
|
|
* TCL_ERROR is returned and an error message is left in |
294 |
|
|
* the interp's result. |
295 |
|
|
* |
296 |
|
|
* Side effects: |
297 |
|
|
* None. |
298 |
|
|
* |
299 |
|
|
*-------------------------------------------------------------- |
300 |
|
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*/ |
301 |
|
|
|
302 |
|
|
int |
303 |
|
|
Tk_GetCapStyle(interp, string, capPtr) |
304 |
|
|
Tcl_Interp *interp; /* Use this for error reporting. */ |
305 |
|
|
char *string; /* String describing a justification style. */ |
306 |
|
|
int *capPtr; /* Where to store cap style corresponding |
307 |
|
|
* to string. */ |
308 |
|
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{ |
309 |
|
|
int c; |
310 |
|
|
size_t length; |
311 |
|
|
|
312 |
|
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c = string[0]; |
313 |
|
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length = strlen(string); |
314 |
|
|
|
315 |
|
|
if ((c == 'b') && (strncmp(string, "butt", length) == 0)) { |
316 |
|
|
*capPtr = CapButt; |
317 |
|
|
return TCL_OK; |
318 |
|
|
} |
319 |
|
|
if ((c == 'p') && (strncmp(string, "projecting", length) == 0)) { |
320 |
|
|
*capPtr = CapProjecting; |
321 |
|
|
return TCL_OK; |
322 |
|
|
} |
323 |
|
|
if ((c == 'r') && (strncmp(string, "round", length) == 0)) { |
324 |
|
|
*capPtr = CapRound; |
325 |
|
|
return TCL_OK; |
326 |
|
|
} |
327 |
|
|
|
328 |
|
|
Tcl_AppendResult(interp, "bad cap style \"", string, |
329 |
|
|
"\": must be butt, projecting, or round", |
330 |
|
|
(char *) NULL); |
331 |
|
|
return TCL_ERROR; |
332 |
|
|
} |
333 |
|
|
|
334 |
|
|
/* |
335 |
|
|
*-------------------------------------------------------------- |
336 |
|
|
* |
337 |
|
|
* Tk_NameOfCapStyle -- |
338 |
|
|
* |
339 |
|
|
* Given a Tk CapStyle, return the string that corresponds |
340 |
|
|
* to it. |
341 |
|
|
* |
342 |
|
|
* Results: |
343 |
|
|
* None. |
344 |
|
|
* |
345 |
|
|
* Side effects: |
346 |
|
|
* None. |
347 |
|
|
* |
348 |
|
|
*-------------------------------------------------------------- |
349 |
|
|
*/ |
350 |
|
|
|
351 |
|
|
char * |
352 |
|
|
Tk_NameOfCapStyle(cap) |
353 |
|
|
int cap; /* Cap style for which identifying string |
354 |
|
|
* is desired. */ |
355 |
|
|
{ |
356 |
|
|
switch (cap) { |
357 |
|
|
case CapButt: return "butt"; |
358 |
|
|
case CapProjecting: return "projecting"; |
359 |
|
|
case CapRound: return "round"; |
360 |
|
|
} |
361 |
|
|
return "unknown cap style"; |
362 |
|
|
} |
363 |
|
|
|
364 |
|
|
/* |
365 |
|
|
*---------------------------------------------------------------------- |
366 |
|
|
* |
367 |
|
|
* Tk_GetJustifyFromObj -- |
368 |
|
|
* |
369 |
|
|
* Return a Tk_Justify value based on the value of the objPtr. |
370 |
|
|
* |
371 |
|
|
* Results: |
372 |
|
|
* The return value is a standard Tcl result. If an error occurs during |
373 |
|
|
* conversion, an error message is left in the interpreter's result |
374 |
|
|
* unless "interp" is NULL. |
375 |
|
|
* |
376 |
|
|
* Side effects: |
377 |
|
|
* The object gets converted by Tcl_GetIndexFromObj. |
378 |
|
|
* |
379 |
|
|
*---------------------------------------------------------------------- |
380 |
|
|
*/ |
381 |
|
|
|
382 |
|
|
int |
383 |
|
|
Tk_GetJustifyFromObj(interp, objPtr, justifyPtr) |
384 |
|
|
Tcl_Interp *interp; /* Used for error reporting. */ |
385 |
|
|
Tcl_Obj *objPtr; /* The object we are trying to get the |
386 |
|
|
* value from. */ |
387 |
|
|
Tk_Justify *justifyPtr; /* Where to place the Tk_Justify that |
388 |
|
|
* corresponds to the string value of |
389 |
|
|
* objPtr. */ |
390 |
|
|
{ |
391 |
|
|
int index, code; |
392 |
|
|
|
393 |
|
|
code = Tcl_GetIndexFromObj(interp, objPtr, justifyStrings, |
394 |
|
|
"justification", 0, &index); |
395 |
|
|
if (code == TCL_OK) { |
396 |
|
|
*justifyPtr = (Tk_Justify) index; |
397 |
|
|
} |
398 |
|
|
return code; |
399 |
|
|
} |
400 |
|
|
|
401 |
|
|
/* |
402 |
|
|
*-------------------------------------------------------------- |
403 |
|
|
* |
404 |
|
|
* Tk_GetJustify -- |
405 |
|
|
* |
406 |
|
|
* Given a string, return the corresponding Tk_Justify. |
407 |
|
|
* |
408 |
|
|
* Results: |
409 |
|
|
* The return value is a standard Tcl return result. If |
410 |
|
|
* TCL_OK is returned, then everything went well and the |
411 |
|
|
* justification is stored at *justifyPtr; otherwise |
412 |
|
|
* TCL_ERROR is returned and an error message is left in |
413 |
|
|
* the interp's result. |
414 |
|
|
* |
415 |
|
|
* Side effects: |
416 |
|
|
* None. |
417 |
|
|
* |
418 |
|
|
*-------------------------------------------------------------- |
419 |
|
|
*/ |
420 |
|
|
|
421 |
|
|
int |
422 |
|
|
Tk_GetJustify(interp, string, justifyPtr) |
423 |
|
|
Tcl_Interp *interp; /* Use this for error reporting. */ |
424 |
|
|
char *string; /* String describing a justification style. */ |
425 |
|
|
Tk_Justify *justifyPtr; /* Where to store Tk_Justify corresponding |
426 |
|
|
* to string. */ |
427 |
|
|
{ |
428 |
|
|
int c; |
429 |
|
|
size_t length; |
430 |
|
|
|
431 |
|
|
c = string[0]; |
432 |
|
|
length = strlen(string); |
433 |
|
|
|
434 |
|
|
if ((c == 'l') && (strncmp(string, "left", length) == 0)) { |
435 |
|
|
*justifyPtr = TK_JUSTIFY_LEFT; |
436 |
|
|
return TCL_OK; |
437 |
|
|
} |
438 |
|
|
if ((c == 'r') && (strncmp(string, "right", length) == 0)) { |
439 |
|
|
*justifyPtr = TK_JUSTIFY_RIGHT; |
440 |
|
|
return TCL_OK; |
441 |
|
|
} |
442 |
|
|
if ((c == 'c') && (strncmp(string, "center", length) == 0)) { |
443 |
|
|
*justifyPtr = TK_JUSTIFY_CENTER; |
444 |
|
|
return TCL_OK; |
445 |
|
|
} |
446 |
|
|
|
447 |
|
|
Tcl_AppendResult(interp, "bad justification \"", string, |
448 |
|
|
"\": must be left, right, or center", |
449 |
|
|
(char *) NULL); |
450 |
|
|
return TCL_ERROR; |
451 |
|
|
} |
452 |
|
|
|
453 |
|
|
/* |
454 |
|
|
*-------------------------------------------------------------- |
455 |
|
|
* |
456 |
|
|
* Tk_NameOfJustify -- |
457 |
|
|
* |
458 |
|
|
* Given a Tk_Justify, return the string that corresponds |
459 |
|
|
* to it. |
460 |
|
|
* |
461 |
|
|
* Results: |
462 |
|
|
* None. |
463 |
|
|
* |
464 |
|
|
* Side effects: |
465 |
|
|
* None. |
466 |
|
|
* |
467 |
|
|
*-------------------------------------------------------------- |
468 |
|
|
*/ |
469 |
|
|
|
470 |
|
|
char * |
471 |
|
|
Tk_NameOfJustify(justify) |
472 |
|
|
Tk_Justify justify; /* Justification style for which |
473 |
|
|
* identifying string is desired. */ |
474 |
|
|
{ |
475 |
|
|
switch (justify) { |
476 |
|
|
case TK_JUSTIFY_LEFT: return "left"; |
477 |
|
|
case TK_JUSTIFY_RIGHT: return "right"; |
478 |
|
|
case TK_JUSTIFY_CENTER: return "center"; |
479 |
|
|
} |
480 |
|
|
return "unknown justification style"; |
481 |
|
|
} |
482 |
|
|
|
483 |
|
|
/* |
484 |
|
|
*---------------------------------------------------------------------- |
485 |
|
|
* |
486 |
|
|
* Tk_GetUid -- |
487 |
|
|
* |
488 |
|
|
* Given a string, this procedure returns a unique identifier |
489 |
|
|
* for the string. |
490 |
|
|
* |
491 |
|
|
* Results: |
492 |
|
|
* This procedure returns a Tk_Uid corresponding to the "string" |
493 |
|
|
* argument. The Tk_Uid has a string value identical to string |
494 |
|
|
* (strcmp will return 0), but it's guaranteed that any other |
495 |
|
|
* calls to this procedure with a string equal to "string" will |
496 |
|
|
* return exactly the same result (i.e. can compare Tk_Uid |
497 |
|
|
* *values* directly, without having to call strcmp on what they |
498 |
|
|
* point to). |
499 |
|
|
* |
500 |
|
|
* Side effects: |
501 |
|
|
* New information may be entered into the identifier table. |
502 |
|
|
* |
503 |
|
|
*---------------------------------------------------------------------- |
504 |
|
|
*/ |
505 |
|
|
|
506 |
|
|
Tk_Uid |
507 |
|
|
Tk_GetUid(string) |
508 |
|
|
CONST char *string; /* String to convert. */ |
509 |
|
|
{ |
510 |
|
|
int dummy; |
511 |
|
|
ThreadSpecificData *tsdPtr = (ThreadSpecificData *) |
512 |
|
|
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData)); |
513 |
|
|
Tcl_HashTable *tablePtr = &tsdPtr->uidTable; |
514 |
|
|
|
515 |
|
|
if (!tsdPtr->initialized) { |
516 |
|
|
Tcl_InitHashTable(tablePtr, TCL_STRING_KEYS); |
517 |
|
|
tsdPtr->initialized = 1; |
518 |
|
|
} |
519 |
|
|
return (Tk_Uid) Tcl_GetHashKey(tablePtr, |
520 |
|
|
Tcl_CreateHashEntry(tablePtr, string, &dummy)); |
521 |
|
|
} |
522 |
|
|
|
523 |
|
|
/* |
524 |
|
|
*-------------------------------------------------------------- |
525 |
|
|
* |
526 |
|
|
* Tk_GetScreenMM -- |
527 |
|
|
* |
528 |
|
|
* Given a string, returns the number of screen millimeters |
529 |
|
|
* corresponding to that string. |
530 |
|
|
* |
531 |
|
|
* Results: |
532 |
|
|
* The return value is a standard Tcl return result. If |
533 |
|
|
* TCL_OK is returned, then everything went well and the |
534 |
|
|
* screen distance is stored at *doublePtr; otherwise |
535 |
|
|
* TCL_ERROR is returned and an error message is left in |
536 |
|
|
* the interp's result. |
537 |
|
|
* |
538 |
|
|
* Side effects: |
539 |
|
|
* None. |
540 |
|
|
* |
541 |
|
|
*-------------------------------------------------------------- |
542 |
|
|
*/ |
543 |
|
|
|
544 |
|
|
int |
545 |
|
|
Tk_GetScreenMM(interp, tkwin, string, doublePtr) |
546 |
|
|
Tcl_Interp *interp; /* Use this for error reporting. */ |
547 |
|
|
Tk_Window tkwin; /* Window whose screen determines conversion |
548 |
|
|
* from centimeters and other absolute |
549 |
|
|
* units. */ |
550 |
|
|
char *string; /* String describing a screen distance. */ |
551 |
|
|
double *doublePtr; /* Place to store converted result. */ |
552 |
|
|
{ |
553 |
|
|
char *end; |
554 |
|
|
double d; |
555 |
|
|
|
556 |
|
|
d = strtod(string, &end); |
557 |
|
|
if (end == string) { |
558 |
|
|
error: |
559 |
|
|
Tcl_AppendResult(interp, "bad screen distance \"", string, |
560 |
|
|
"\"", (char *) NULL); |
561 |
|
|
return TCL_ERROR; |
562 |
|
|
} |
563 |
|
|
while ((*end != '\0') && isspace(UCHAR(*end))) { |
564 |
|
|
end++; |
565 |
|
|
} |
566 |
|
|
switch (*end) { |
567 |
|
|
case 0: |
568 |
|
|
d /= WidthOfScreen(Tk_Screen(tkwin)); |
569 |
|
|
d *= WidthMMOfScreen(Tk_Screen(tkwin)); |
570 |
|
|
break; |
571 |
|
|
case 'c': |
572 |
|
|
d *= 10; |
573 |
|
|
end++; |
574 |
|
|
break; |
575 |
|
|
case 'i': |
576 |
|
|
d *= 25.4; |
577 |
|
|
end++; |
578 |
|
|
break; |
579 |
|
|
case 'm': |
580 |
|
|
end++; |
581 |
|
|
break; |
582 |
|
|
case 'p': |
583 |
|
|
d *= 25.4/72.0; |
584 |
|
|
end++; |
585 |
|
|
break; |
586 |
|
|
default: |
587 |
|
|
goto error; |
588 |
|
|
} |
589 |
|
|
while ((*end != '\0') && isspace(UCHAR(*end))) { |
590 |
|
|
end++; |
591 |
|
|
} |
592 |
|
|
if (*end != 0) { |
593 |
|
|
goto error; |
594 |
|
|
} |
595 |
|
|
*doublePtr = d; |
596 |
|
|
return TCL_OK; |
597 |
|
|
} |
598 |
|
|
|
599 |
|
|
/* |
600 |
|
|
*-------------------------------------------------------------- |
601 |
|
|
* |
602 |
|
|
* Tk_GetPixels -- |
603 |
|
|
* |
604 |
|
|
* Given a string, returns the number of pixels corresponding |
605 |
|
|
* to that string. |
606 |
|
|
* |
607 |
|
|
* Results: |
608 |
|
|
* The return value is a standard Tcl return result. If |
609 |
|
|
* TCL_OK is returned, then everything went well and the |
610 |
|
|
* rounded pixel distance is stored at *intPtr; otherwise |
611 |
|
|
* TCL_ERROR is returned and an error message is left in |
612 |
|
|
* the interp's result. |
613 |
|
|
* |
614 |
|
|
* Side effects: |
615 |
|
|
* None. |
616 |
|
|
* |
617 |
|
|
*-------------------------------------------------------------- |
618 |
|
|
*/ |
619 |
|
|
|
620 |
|
|
int |
621 |
|
|
Tk_GetPixels(interp, tkwin, string, intPtr) |
622 |
|
|
Tcl_Interp *interp; /* Use this for error reporting. */ |
623 |
|
|
Tk_Window tkwin; /* Window whose screen determines conversion |
624 |
|
|
* from centimeters and other absolute |
625 |
|
|
* units. */ |
626 |
|
|
char *string; /* String describing a number of pixels. */ |
627 |
|
|
int *intPtr; /* Place to store converted result. */ |
628 |
|
|
{ |
629 |
|
|
double d; |
630 |
|
|
|
631 |
|
|
if (TkGetDoublePixels(interp, tkwin, string, &d) != TCL_OK) { |
632 |
|
|
return TCL_ERROR; |
633 |
|
|
} |
634 |
|
|
|
635 |
|
|
if (d < 0) { |
636 |
|
|
*intPtr = (int) (d - 0.5); |
637 |
|
|
} else { |
638 |
|
|
*intPtr = (int) (d + 0.5); |
639 |
|
|
} |
640 |
|
|
return TCL_OK; |
641 |
|
|
} |
642 |
|
|
/* |
643 |
|
|
*-------------------------------------------------------------- |
644 |
|
|
* |
645 |
|
|
* TkGetDoublePixels -- |
646 |
|
|
* |
647 |
|
|
* Given a string, returns the number of pixels corresponding |
648 |
|
|
* to that string. |
649 |
|
|
* |
650 |
|
|
* Results: |
651 |
|
|
* The return value is a standard Tcl return result. If |
652 |
|
|
* TCL_OK is returned, then everything went well and the |
653 |
|
|
* pixel distance is stored at *doublePtr; otherwise |
654 |
|
|
* TCL_ERROR is returned and an error message is left in |
655 |
|
|
* interp->result. |
656 |
|
|
* |
657 |
|
|
* Side effects: |
658 |
|
|
* None. |
659 |
|
|
* |
660 |
|
|
*-------------------------------------------------------------- |
661 |
|
|
*/ |
662 |
|
|
|
663 |
|
|
int |
664 |
|
|
TkGetDoublePixels(interp, tkwin, string, doublePtr) |
665 |
|
|
Tcl_Interp *interp; /* Use this for error reporting. */ |
666 |
|
|
Tk_Window tkwin; /* Window whose screen determines conversion |
667 |
|
|
* from centimeters and other absolute |
668 |
|
|
* units. */ |
669 |
|
|
CONST char *string; /* String describing a number of pixels. */ |
670 |
|
|
double *doublePtr; /* Place to store converted result. */ |
671 |
|
|
{ |
672 |
|
|
char *end; |
673 |
|
|
double d; |
674 |
|
|
|
675 |
|
|
d = strtod((char *) string, &end); |
676 |
|
|
if (end == string) { |
677 |
|
|
error: |
678 |
|
|
Tcl_AppendResult(interp, "bad screen distance \"", string, |
679 |
|
|
"\"", (char *) NULL); |
680 |
|
|
return TCL_ERROR; |
681 |
|
|
} |
682 |
|
|
while ((*end != '\0') && isspace(UCHAR(*end))) { |
683 |
|
|
end++; |
684 |
|
|
} |
685 |
|
|
switch (*end) { |
686 |
|
|
case 0: |
687 |
|
|
break; |
688 |
|
|
case 'c': |
689 |
|
|
d *= 10*WidthOfScreen(Tk_Screen(tkwin)); |
690 |
|
|
d /= WidthMMOfScreen(Tk_Screen(tkwin)); |
691 |
|
|
end++; |
692 |
|
|
break; |
693 |
|
|
case 'i': |
694 |
|
|
d *= 25.4*WidthOfScreen(Tk_Screen(tkwin)); |
695 |
|
|
d /= WidthMMOfScreen(Tk_Screen(tkwin)); |
696 |
|
|
end++; |
697 |
|
|
break; |
698 |
|
|
case 'm': |
699 |
|
|
d *= WidthOfScreen(Tk_Screen(tkwin)); |
700 |
|
|
d /= WidthMMOfScreen(Tk_Screen(tkwin)); |
701 |
|
|
end++; |
702 |
|
|
break; |
703 |
|
|
case 'p': |
704 |
|
|
d *= (25.4/72.0)*WidthOfScreen(Tk_Screen(tkwin)); |
705 |
|
|
d /= WidthMMOfScreen(Tk_Screen(tkwin)); |
706 |
|
|
end++; |
707 |
|
|
break; |
708 |
|
|
default: |
709 |
|
|
goto error; |
710 |
|
|
} |
711 |
|
|
while ((*end != '\0') && isspace(UCHAR(*end))) { |
712 |
|
|
end++; |
713 |
|
|
} |
714 |
|
|
if (*end != 0) { |
715 |
|
|
goto error; |
716 |
|
|
} |
717 |
|
|
*doublePtr = d; |
718 |
|
|
return TCL_OK; |
719 |
|
|
} |
720 |
|
|
|
721 |
|
|
/* End of tkget.c */ |