2257 lines
69 KiB
C
2257 lines
69 KiB
C
/*
|
||
* tkEntry.c --
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*
|
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* This module implements entry widgets for the Tk
|
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* toolkit. An entry displays a string and allows
|
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* the string to be edited.
|
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*
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* Copyright (c) 1990-1994 The Regents of the University of California.
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* Copyright (c) 1994-1996 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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* SCCS: @(#) tkEntry.c 1.102 96/08/06 17:27:33
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*/
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#include "default.h"
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#include "tkPort.h"
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#include "tkInt.h"
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/*
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* A data structure of the following type is kept for each entry
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* widget managed by this file:
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*/
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typedef struct {
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Tk_Window tkwin; /* Window that embodies the entry. NULL
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* means that the window has been destroyed
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* but the data structures haven't yet been
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* cleaned up.*/
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Display *display; /* Display containing widget. Used, among
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* other things, so that resources can be
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* freed even after tkwin has gone away. */
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Tcl_Interp *interp; /* Interpreter associated with entry. */
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Tcl_Command widgetCmd; /* Token for entry's widget command. */
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int numChars; /* Number of non-NULL characters in
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* string (may be 0). */
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char *string; /* Pointer to storage for string;
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* NULL-terminated; malloc-ed. */
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char *textVarName; /* Name of variable (malloc'ed) or NULL.
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* If non-NULL, entry's string tracks the
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* contents of this variable and vice versa. */
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Tk_Uid state; /* Normal or disabled. Entry is read-only
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* when disabled. */
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/*
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* Information used when displaying widget:
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*/
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Tk_3DBorder normalBorder; /* Used for drawing border around whole
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* window, plus used for background. */
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int borderWidth; /* Width of 3-D border around window. */
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int relief; /* 3-D effect: TK_RELIEF_RAISED, etc. */
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XFontStruct *fontPtr; /* Information about text font, or NULL. */
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XColor *fgColorPtr; /* Text color in normal mode. */
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GC textGC; /* For drawing normal text. */
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Tk_3DBorder selBorder; /* Border and background for selected
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* characters. */
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int selBorderWidth; /* Width of border around selection. */
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XColor *selFgColorPtr; /* Foreground color for selected text. */
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GC selTextGC; /* For drawing selected text. */
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Tk_3DBorder insertBorder; /* Used to draw vertical bar for insertion
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* cursor. */
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int insertWidth; /* Total width of insert cursor. */
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int insertBorderWidth; /* Width of 3-D border around insert cursor. */
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int insertOnTime; /* Number of milliseconds cursor should spend
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* in "on" state for each blink. */
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int insertOffTime; /* Number of milliseconds cursor should spend
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* in "off" state for each blink. */
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Tcl_TimerToken insertBlinkHandler;
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/* Timer handler used to blink cursor on and
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* off. */
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int highlightWidth; /* Width in pixels of highlight to draw
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* around widget when it has the focus.
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* <= 0 means don't draw a highlight. */
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XColor *highlightBgColorPtr;
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/* Color for drawing traversal highlight
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* area when highlight is off. */
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XColor *highlightColorPtr; /* Color for drawing traversal highlight. */
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GC highlightGC; /* For drawing traversal highlight. */
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Tk_Justify justify; /* Justification to use for text within
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* window. */
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int avgWidth; /* Width of average character. */
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int prefWidth; /* Desired width of window, measured in
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* average characters. */
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int inset; /* Number of pixels on the left and right
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* sides that are taken up by XPAD, borderWidth
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* (if any), and highlightWidth (if any). */
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int leftIndex; /* Index of left-most character visible in
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* window. */
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int leftX; /* X position at which leftIndex is drawn
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* (varies depending on justify). */
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int tabOrigin; /* Origin for tabs (left edge of string[0]). */
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int insertPos; /* Index of character before which next
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* typed character will be inserted. */
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char *showChar; /* Value of -show option. If non-NULL, first
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* character is used for displaying all
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* characters in entry. Malloc'ed. */
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char *displayString; /* If non-NULL, points to string with same
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* length as string but whose characters
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* are all equal to showChar. Malloc'ed. */
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/*
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* Information about what's selected, if any.
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*/
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int selectFirst; /* Index of first selected character (-1 means
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* nothing selected. */
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int selectLast; /* Index of last selected character (-1 means
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* nothing selected. */
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int selectAnchor; /* Fixed end of selection (i.e. "select to"
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* operation will use this as one end of the
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* selection). */
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int exportSelection; /* Non-zero means tie internal entry selection
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* to X selection. */
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/*
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* Information for scanning:
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*/
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int scanMarkX; /* X-position at which scan started (e.g.
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* button was pressed here). */
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int scanMarkIndex; /* Index of character that was at left of
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* window when scan started. */
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/*
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* Miscellaneous information:
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*/
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Tk_Cursor cursor; /* Current cursor for window, or None. */
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char *takeFocus; /* Value of -takefocus option; not used in
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* the C code, but used by keyboard traversal
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* scripts. Malloc'ed, but may be NULL. */
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char *scrollCmd; /* Command prefix for communicating with
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* scrollbar(s). Malloc'ed. NULL means
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* no command to issue. */
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int flags; /* Miscellaneous flags; see below for
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* definitions. */
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} Entry;
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/*
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* Assigned bits of "flags" fields of Entry structures, and what those
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* bits mean:
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*
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* REDRAW_PENDING: Non-zero means a DoWhenIdle handler has
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* already been queued to redisplay the entry.
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* BORDER_NEEDED: Non-zero means 3-D border must be redrawn
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* around window during redisplay. Normally
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* only text portion needs to be redrawn.
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* CURSOR_ON: Non-zero means insert cursor is displayed at
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* present. 0 means it isn't displayed.
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* GOT_FOCUS: Non-zero means this window has the input
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* focus.
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* UPDATE_SCROLLBAR: Non-zero means scrollbar should be updated
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* during next redisplay operation.
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*/
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#define REDRAW_PENDING 1
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#define BORDER_NEEDED 2
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#define CURSOR_ON 4
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#define GOT_FOCUS 8
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#define UPDATE_SCROLLBAR 16
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/*
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* The following macro defines how many extra pixels to leave on each
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* side of the text in the entry.
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*/
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#define XPAD 1
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#define YPAD 1
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/*
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* Information used for argv parsing.
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*/
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static Tk_ConfigSpec configSpecs[] = {
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{TK_CONFIG_BORDER, "-background", "background", "Background",
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DEF_ENTRY_BG_COLOR, Tk_Offset(Entry, normalBorder),
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TK_CONFIG_COLOR_ONLY},
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{TK_CONFIG_BORDER, "-background", "background", "Background",
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DEF_ENTRY_BG_MONO, Tk_Offset(Entry, normalBorder),
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TK_CONFIG_MONO_ONLY},
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{TK_CONFIG_SYNONYM, "-bd", "borderWidth", (char *) NULL,
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(char *) NULL, 0, 0},
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{TK_CONFIG_SYNONYM, "-bg", "background", (char *) NULL,
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(char *) NULL, 0, 0},
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{TK_CONFIG_PIXELS, "-borderwidth", "borderWidth", "BorderWidth",
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DEF_ENTRY_BORDER_WIDTH, Tk_Offset(Entry, borderWidth), 0},
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{TK_CONFIG_ACTIVE_CURSOR, "-cursor", "cursor", "Cursor",
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DEF_ENTRY_CURSOR, Tk_Offset(Entry, cursor), TK_CONFIG_NULL_OK},
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{TK_CONFIG_BOOLEAN, "-exportselection", "exportSelection",
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"ExportSelection", DEF_ENTRY_EXPORT_SELECTION,
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Tk_Offset(Entry, exportSelection), 0},
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{TK_CONFIG_SYNONYM, "-fg", "foreground", (char *) NULL,
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(char *) NULL, 0, 0},
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{TK_CONFIG_FONT, "-font", "font", "Font",
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DEF_ENTRY_FONT, Tk_Offset(Entry, fontPtr), 0},
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{TK_CONFIG_COLOR, "-foreground", "foreground", "Foreground",
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DEF_ENTRY_FG, Tk_Offset(Entry, fgColorPtr), 0},
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{TK_CONFIG_COLOR, "-highlightbackground", "highlightBackground",
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"HighlightBackground", DEF_ENTRY_HIGHLIGHT_BG,
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Tk_Offset(Entry, highlightBgColorPtr), 0},
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{TK_CONFIG_COLOR, "-highlightcolor", "highlightColor", "HighlightColor",
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DEF_ENTRY_HIGHLIGHT, Tk_Offset(Entry, highlightColorPtr), 0},
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{TK_CONFIG_PIXELS, "-highlightthickness", "highlightThickness",
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"HighlightThickness",
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DEF_ENTRY_HIGHLIGHT_WIDTH, Tk_Offset(Entry, highlightWidth), 0},
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{TK_CONFIG_BORDER, "-insertbackground", "insertBackground", "Foreground",
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DEF_ENTRY_INSERT_BG, Tk_Offset(Entry, insertBorder), 0},
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{TK_CONFIG_PIXELS, "-insertborderwidth", "insertBorderWidth", "BorderWidth",
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DEF_ENTRY_INSERT_BD_COLOR, Tk_Offset(Entry, insertBorderWidth),
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TK_CONFIG_COLOR_ONLY},
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{TK_CONFIG_PIXELS, "-insertborderwidth", "insertBorderWidth", "BorderWidth",
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DEF_ENTRY_INSERT_BD_MONO, Tk_Offset(Entry, insertBorderWidth),
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TK_CONFIG_MONO_ONLY},
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{TK_CONFIG_INT, "-insertofftime", "insertOffTime", "OffTime",
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DEF_ENTRY_INSERT_OFF_TIME, Tk_Offset(Entry, insertOffTime), 0},
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{TK_CONFIG_INT, "-insertontime", "insertOnTime", "OnTime",
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DEF_ENTRY_INSERT_ON_TIME, Tk_Offset(Entry, insertOnTime), 0},
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{TK_CONFIG_PIXELS, "-insertwidth", "insertWidth", "InsertWidth",
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DEF_ENTRY_INSERT_WIDTH, Tk_Offset(Entry, insertWidth), 0},
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{TK_CONFIG_JUSTIFY, "-justify", "justify", "Justify",
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DEF_ENTRY_JUSTIFY, Tk_Offset(Entry, justify), 0},
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{TK_CONFIG_RELIEF, "-relief", "relief", "Relief",
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DEF_ENTRY_RELIEF, Tk_Offset(Entry, relief), 0},
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{TK_CONFIG_BORDER, "-selectbackground", "selectBackground", "Foreground",
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DEF_ENTRY_SELECT_COLOR, Tk_Offset(Entry, selBorder),
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TK_CONFIG_COLOR_ONLY},
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{TK_CONFIG_BORDER, "-selectbackground", "selectBackground", "Foreground",
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DEF_ENTRY_SELECT_MONO, Tk_Offset(Entry, selBorder),
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TK_CONFIG_MONO_ONLY},
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{TK_CONFIG_PIXELS, "-selectborderwidth", "selectBorderWidth", "BorderWidth",
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DEF_ENTRY_SELECT_BD_COLOR, Tk_Offset(Entry, selBorderWidth),
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TK_CONFIG_COLOR_ONLY},
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{TK_CONFIG_PIXELS, "-selectborderwidth", "selectBorderWidth", "BorderWidth",
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DEF_ENTRY_SELECT_BD_MONO, Tk_Offset(Entry, selBorderWidth),
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TK_CONFIG_MONO_ONLY},
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{TK_CONFIG_COLOR, "-selectforeground", "selectForeground", "Background",
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DEF_ENTRY_SELECT_FG_COLOR, Tk_Offset(Entry, selFgColorPtr),
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TK_CONFIG_COLOR_ONLY},
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{TK_CONFIG_COLOR, "-selectforeground", "selectForeground", "Background",
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DEF_ENTRY_SELECT_FG_MONO, Tk_Offset(Entry, selFgColorPtr),
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TK_CONFIG_MONO_ONLY},
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{TK_CONFIG_STRING, "-show", "show", "Show",
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DEF_ENTRY_SHOW, Tk_Offset(Entry, showChar), TK_CONFIG_NULL_OK},
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{TK_CONFIG_UID, "-state", "state", "State",
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DEF_ENTRY_STATE, Tk_Offset(Entry, state), 0},
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{TK_CONFIG_STRING, "-takefocus", "takeFocus", "TakeFocus",
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DEF_ENTRY_TAKE_FOCUS, Tk_Offset(Entry, takeFocus), TK_CONFIG_NULL_OK},
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{TK_CONFIG_STRING, "-textvariable", "textVariable", "Variable",
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DEF_ENTRY_TEXT_VARIABLE, Tk_Offset(Entry, textVarName),
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TK_CONFIG_NULL_OK},
|
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{TK_CONFIG_INT, "-width", "width", "Width",
|
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DEF_ENTRY_WIDTH, Tk_Offset(Entry, prefWidth), 0},
|
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{TK_CONFIG_STRING, "-xscrollcommand", "xScrollCommand", "ScrollCommand",
|
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DEF_ENTRY_SCROLL_COMMAND, Tk_Offset(Entry, scrollCmd),
|
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TK_CONFIG_NULL_OK},
|
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{TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL,
|
||
(char *) NULL, 0, 0}
|
||
};
|
||
|
||
/*
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||
* Flags for GetEntryIndex procedure:
|
||
*/
|
||
|
||
#define ZERO_OK 1
|
||
#define LAST_PLUS_ONE_OK 2
|
||
|
||
/*
|
||
* Forward declarations for procedures defined later in this file:
|
||
*/
|
||
|
||
static int ConfigureEntry _ANSI_ARGS_((Tcl_Interp *interp,
|
||
Entry *entryPtr, int argc, char **argv,
|
||
int flags));
|
||
static void DeleteChars _ANSI_ARGS_((Entry *entryPtr, int index,
|
||
int count));
|
||
static void DestroyEntry _ANSI_ARGS_((char *memPtr));
|
||
static void DisplayEntry _ANSI_ARGS_((ClientData clientData));
|
||
static void EntryBlinkProc _ANSI_ARGS_((ClientData clientData));
|
||
static void EntryCmdDeletedProc _ANSI_ARGS_((
|
||
ClientData clientData));
|
||
static void EntryComputeGeometry _ANSI_ARGS_((Entry *entryPtr));
|
||
static void EntryEventProc _ANSI_ARGS_((ClientData clientData,
|
||
XEvent *eventPtr));
|
||
static void EntryFocusProc _ANSI_ARGS_ ((Entry *entryPtr,
|
||
int gotFocus));
|
||
static int EntryFetchSelection _ANSI_ARGS_((ClientData clientData,
|
||
int offset, char *buffer, int maxBytes));
|
||
static void EntryLostSelection _ANSI_ARGS_((
|
||
ClientData clientData));
|
||
static void EventuallyRedraw _ANSI_ARGS_((Entry *entryPtr));
|
||
static void EntryScanTo _ANSI_ARGS_((Entry *entryPtr, int y));
|
||
static void EntrySetValue _ANSI_ARGS_((Entry *entryPtr,
|
||
char *value));
|
||
static void EntrySelectTo _ANSI_ARGS_((
|
||
Entry *entryPtr, int index));
|
||
static char * EntryTextVarProc _ANSI_ARGS_((ClientData clientData,
|
||
Tcl_Interp *interp, char *name1, char *name2,
|
||
int flags));
|
||
static void EntryUpdateScrollbar _ANSI_ARGS_((Entry *entryPtr));
|
||
static void EntryValueChanged _ANSI_ARGS_((Entry *entryPtr));
|
||
static void EntryVisibleRange _ANSI_ARGS_((Entry *entryPtr,
|
||
double *firstPtr, double *lastPtr));
|
||
static int EntryWidgetCmd _ANSI_ARGS_((ClientData clientData,
|
||
Tcl_Interp *interp, int argc, char **argv));
|
||
static int GetEntryIndex _ANSI_ARGS_((Tcl_Interp *interp,
|
||
Entry *entryPtr, char *string, int *indexPtr));
|
||
static void InsertChars _ANSI_ARGS_((Entry *entryPtr, int index,
|
||
char *string));
|
||
|
||
/*
|
||
*--------------------------------------------------------------
|
||
*
|
||
* Tk_EntryCmd --
|
||
*
|
||
* This procedure is invoked to process the "entry" Tcl
|
||
* command. See the user documentation for details on what
|
||
* it does.
|
||
*
|
||
* Results:
|
||
* A standard Tcl result.
|
||
*
|
||
* Side effects:
|
||
* See the user documentation.
|
||
*
|
||
*--------------------------------------------------------------
|
||
*/
|
||
|
||
int
|
||
Tk_EntryCmd(clientData, interp, argc, argv)
|
||
ClientData clientData; /* Main window associated with
|
||
* interpreter. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
Tk_Window tkwin = (Tk_Window) clientData;
|
||
register Entry *entryPtr;
|
||
Tk_Window new;
|
||
|
||
if (argc < 2) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " pathName ?options?\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
new = Tk_CreateWindowFromPath(interp, tkwin, argv[1], (char *) NULL);
|
||
if (new == NULL) {
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
/*
|
||
* Initialize the fields of the structure that won't be initialized
|
||
* by ConfigureEntry, or that ConfigureEntry requires to be
|
||
* initialized already (e.g. resource pointers).
|
||
*/
|
||
|
||
entryPtr = (Entry *) ckalloc(sizeof(Entry));
|
||
entryPtr->tkwin = new;
|
||
entryPtr->display = Tk_Display(new);
|
||
entryPtr->interp = interp;
|
||
entryPtr->widgetCmd = Tcl_CreateCommand(interp,
|
||
Tk_PathName(entryPtr->tkwin), EntryWidgetCmd,
|
||
(ClientData) entryPtr, EntryCmdDeletedProc);
|
||
entryPtr->numChars = 0;
|
||
entryPtr->string = (char *) ckalloc(1);
|
||
entryPtr->string[0] = '\0';
|
||
entryPtr->textVarName = NULL;
|
||
entryPtr->state = tkNormalUid;
|
||
entryPtr->normalBorder = NULL;
|
||
entryPtr->borderWidth = 0;
|
||
entryPtr->relief = TK_RELIEF_FLAT;
|
||
entryPtr->fontPtr = NULL;
|
||
entryPtr->fgColorPtr = NULL;
|
||
entryPtr->textGC = None;
|
||
entryPtr->selBorder = NULL;
|
||
entryPtr->selBorderWidth = 0;
|
||
entryPtr->selFgColorPtr = NULL;
|
||
entryPtr->selTextGC = None;
|
||
entryPtr->insertBorder = NULL;
|
||
entryPtr->insertWidth = 0;
|
||
entryPtr->insertBorderWidth = 0;
|
||
entryPtr->insertOnTime = 0;
|
||
entryPtr->insertOffTime = 0;
|
||
entryPtr->insertBlinkHandler = (Tcl_TimerToken) NULL;
|
||
entryPtr->highlightWidth = 0;
|
||
entryPtr->highlightBgColorPtr = NULL;
|
||
entryPtr->highlightColorPtr = NULL;
|
||
entryPtr->justify = TK_JUSTIFY_LEFT;
|
||
entryPtr->avgWidth = 1;
|
||
entryPtr->prefWidth = 0;
|
||
entryPtr->inset = XPAD;
|
||
entryPtr->leftIndex = 0;
|
||
entryPtr->leftX = 0;
|
||
entryPtr->tabOrigin = 0;
|
||
entryPtr->insertPos = 0;
|
||
entryPtr->showChar = NULL;
|
||
entryPtr->displayString = NULL;
|
||
entryPtr->selectFirst = -1;
|
||
entryPtr->selectLast = -1;
|
||
entryPtr->selectAnchor = 0;
|
||
entryPtr->exportSelection = 1;
|
||
entryPtr->scanMarkX = 0;
|
||
entryPtr->scanMarkIndex = 0;
|
||
entryPtr->cursor = None;
|
||
entryPtr->takeFocus = NULL;
|
||
entryPtr->scrollCmd = NULL;
|
||
entryPtr->flags = 0;
|
||
|
||
Tk_SetClass(entryPtr->tkwin, "Entry");
|
||
Tk_CreateEventHandler(entryPtr->tkwin,
|
||
ExposureMask|StructureNotifyMask|FocusChangeMask,
|
||
EntryEventProc, (ClientData) entryPtr);
|
||
Tk_CreateSelHandler(entryPtr->tkwin, XA_PRIMARY, XA_STRING,
|
||
EntryFetchSelection, (ClientData) entryPtr, XA_STRING);
|
||
if (ConfigureEntry(interp, entryPtr, argc-2, argv+2, 0) != TCL_OK) {
|
||
goto error;
|
||
}
|
||
|
||
interp->result = Tk_PathName(entryPtr->tkwin);
|
||
return TCL_OK;
|
||
|
||
error:
|
||
Tk_DestroyWindow(entryPtr->tkwin);
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
/*
|
||
*--------------------------------------------------------------
|
||
*
|
||
* EntryWidgetCmd --
|
||
*
|
||
* This procedure is invoked to process the Tcl command
|
||
* that corresponds to a widget managed by this module.
|
||
* See the user documentation for details on what it does.
|
||
*
|
||
* Results:
|
||
* A standard Tcl result.
|
||
*
|
||
* Side effects:
|
||
* See the user documentation.
|
||
*
|
||
*--------------------------------------------------------------
|
||
*/
|
||
|
||
static int
|
||
EntryWidgetCmd(clientData, interp, argc, argv)
|
||
ClientData clientData; /* Information about entry widget. */
|
||
Tcl_Interp *interp; /* Current interpreter. */
|
||
int argc; /* Number of arguments. */
|
||
char **argv; /* Argument strings. */
|
||
{
|
||
register Entry *entryPtr = (Entry *) clientData;
|
||
int result = TCL_OK;
|
||
size_t length;
|
||
int c, height;
|
||
|
||
if (argc < 2) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " option ?arg arg ...?\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
Tcl_Preserve((ClientData) entryPtr);
|
||
c = argv[1][0];
|
||
length = strlen(argv[1]);
|
||
if ((c == 'b') && (strncmp(argv[1], "bbox", length) == 0)) {
|
||
int index, x1, x2;
|
||
|
||
if (argc != 3) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " bbox index\"",
|
||
(char *) NULL);
|
||
goto error;
|
||
}
|
||
if (GetEntryIndex(interp, entryPtr, argv[2], &index) != TCL_OK) {
|
||
goto error;
|
||
}
|
||
if ((index == entryPtr->numChars) && (index > 0)) {
|
||
index--;
|
||
}
|
||
TkMeasureChars(entryPtr->fontPtr,
|
||
(entryPtr->displayString == NULL) ? entryPtr->string
|
||
: entryPtr->displayString, index, entryPtr->tabOrigin,
|
||
1000000, entryPtr->tabOrigin, TK_NEWLINES_NOT_SPECIAL,
|
||
&x1);
|
||
if (index < entryPtr->numChars) {
|
||
TkMeasureChars(entryPtr->fontPtr,
|
||
(entryPtr->displayString == NULL) ? entryPtr->string
|
||
: entryPtr->displayString, index+1, entryPtr->tabOrigin,
|
||
1000000, entryPtr->tabOrigin, TK_NEWLINES_NOT_SPECIAL,
|
||
&x2);
|
||
} else {
|
||
x2 = x1;
|
||
}
|
||
height = entryPtr->fontPtr->ascent + entryPtr->fontPtr->descent;
|
||
sprintf(interp->result, "%d %d %d %d", x1,
|
||
(Tk_Height(entryPtr->tkwin) - height)/2, x2-x1, height);
|
||
} else if ((c == 'c') && (strncmp(argv[1], "cget", length) == 0)
|
||
&& (length >= 2)) {
|
||
if (argc != 3) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " cget option\"",
|
||
(char *) NULL);
|
||
goto error;
|
||
}
|
||
result = Tk_ConfigureValue(interp, entryPtr->tkwin, configSpecs,
|
||
(char *) entryPtr, argv[2], 0);
|
||
} else if ((c == 'c') && (strncmp(argv[1], "configure", length) == 0)
|
||
&& (length >= 2)) {
|
||
if (argc == 2) {
|
||
result = Tk_ConfigureInfo(interp, entryPtr->tkwin, configSpecs,
|
||
(char *) entryPtr, (char *) NULL, 0);
|
||
} else if (argc == 3) {
|
||
result = Tk_ConfigureInfo(interp, entryPtr->tkwin, configSpecs,
|
||
(char *) entryPtr, argv[2], 0);
|
||
} else {
|
||
result = ConfigureEntry(interp, entryPtr, argc-2, argv+2,
|
||
TK_CONFIG_ARGV_ONLY);
|
||
}
|
||
} else if ((c == 'd') && (strncmp(argv[1], "delete", length) == 0)) {
|
||
int first, last;
|
||
|
||
if ((argc < 3) || (argc > 4)) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " delete firstIndex ?lastIndex?\"",
|
||
(char *) NULL);
|
||
goto error;
|
||
}
|
||
if (GetEntryIndex(interp, entryPtr, argv[2], &first) != TCL_OK) {
|
||
goto error;
|
||
}
|
||
if (argc == 3) {
|
||
last = first+1;
|
||
} else {
|
||
if (GetEntryIndex(interp, entryPtr, argv[3], &last) != TCL_OK) {
|
||
goto error;
|
||
}
|
||
}
|
||
if ((last >= first) && (entryPtr->state == tkNormalUid)) {
|
||
DeleteChars(entryPtr, first, last-first);
|
||
}
|
||
} else if ((c == 'g') && (strncmp(argv[1], "get", length) == 0)) {
|
||
if (argc != 2) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " get\"", (char *) NULL);
|
||
goto error;
|
||
}
|
||
interp->result = entryPtr->string;
|
||
} else if ((c == 'i') && (strncmp(argv[1], "icursor", length) == 0)
|
||
&& (length >= 2)) {
|
||
if (argc != 3) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " icursor pos\"",
|
||
(char *) NULL);
|
||
goto error;
|
||
}
|
||
if (GetEntryIndex(interp, entryPtr, argv[2], &entryPtr->insertPos)
|
||
!= TCL_OK) {
|
||
goto error;
|
||
}
|
||
EventuallyRedraw(entryPtr);
|
||
} else if ((c == 'i') && (strncmp(argv[1], "index", length) == 0)
|
||
&& (length >= 3)) {
|
||
int index;
|
||
|
||
if (argc != 3) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " index string\"", (char *) NULL);
|
||
goto error;
|
||
}
|
||
if (GetEntryIndex(interp, entryPtr, argv[2], &index) != TCL_OK) {
|
||
goto error;
|
||
}
|
||
sprintf(interp->result, "%d", index);
|
||
} else if ((c == 'i') && (strncmp(argv[1], "insert", length) == 0)
|
||
&& (length >= 3)) {
|
||
int index;
|
||
|
||
if (argc != 4) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " insert index text\"",
|
||
(char *) NULL);
|
||
goto error;
|
||
}
|
||
if (GetEntryIndex(interp, entryPtr, argv[2], &index) != TCL_OK) {
|
||
goto error;
|
||
}
|
||
if (entryPtr->state == tkNormalUid) {
|
||
InsertChars(entryPtr, index, argv[3]);
|
||
}
|
||
} else if ((c == 's') && (length >= 2)
|
||
&& (strncmp(argv[1], "scan", length) == 0)) {
|
||
int x;
|
||
|
||
if (argc != 4) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " scan mark|dragto x\"", (char *) NULL);
|
||
goto error;
|
||
}
|
||
if (Tcl_GetInt(interp, argv[3], &x) != TCL_OK) {
|
||
goto error;
|
||
}
|
||
if ((argv[2][0] == 'm')
|
||
&& (strncmp(argv[2], "mark", strlen(argv[2])) == 0)) {
|
||
entryPtr->scanMarkX = x;
|
||
entryPtr->scanMarkIndex = entryPtr->leftIndex;
|
||
} else if ((argv[2][0] == 'd')
|
||
&& (strncmp(argv[2], "dragto", strlen(argv[2])) == 0)) {
|
||
EntryScanTo(entryPtr, x);
|
||
} else {
|
||
Tcl_AppendResult(interp, "bad scan option \"", argv[2],
|
||
"\": must be mark or dragto", (char *) NULL);
|
||
goto error;
|
||
}
|
||
} else if ((c == 's') && (length >= 2)
|
||
&& (strncmp(argv[1], "selection", length) == 0)) {
|
||
int index, index2;
|
||
|
||
if (argc < 3) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " select option ?index?\"", (char *) NULL);
|
||
goto error;
|
||
}
|
||
length = strlen(argv[2]);
|
||
c = argv[2][0];
|
||
if ((c == 'c') && (strncmp(argv[2], "clear", length) == 0)) {
|
||
if (argc != 3) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " selection clear\"", (char *) NULL);
|
||
goto error;
|
||
}
|
||
if (entryPtr->selectFirst != -1) {
|
||
entryPtr->selectFirst = entryPtr->selectLast = -1;
|
||
EventuallyRedraw(entryPtr);
|
||
}
|
||
goto done;
|
||
} else if ((c == 'p') && (strncmp(argv[2], "present", length) == 0)) {
|
||
if (argc != 3) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " selection present\"", (char *) NULL);
|
||
goto error;
|
||
}
|
||
if (entryPtr->selectFirst == -1) {
|
||
interp->result = "0";
|
||
} else {
|
||
interp->result = "1";
|
||
}
|
||
goto done;
|
||
}
|
||
if (argc >= 4) {
|
||
if (GetEntryIndex(interp, entryPtr, argv[3], &index) != TCL_OK) {
|
||
goto error;
|
||
}
|
||
}
|
||
if ((c == 'a') && (strncmp(argv[2], "adjust", length) == 0)) {
|
||
if (argc != 4) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " selection adjust index\"",
|
||
(char *) NULL);
|
||
goto error;
|
||
}
|
||
if (entryPtr->selectFirst >= 0) {
|
||
int half1, half2;
|
||
|
||
half1 = (entryPtr->selectFirst + entryPtr->selectLast)/2;
|
||
half2 = (entryPtr->selectFirst + entryPtr->selectLast + 1)/2;
|
||
if (index < half1) {
|
||
entryPtr->selectAnchor = entryPtr->selectLast;
|
||
} else if (index > half2) {
|
||
entryPtr->selectAnchor = entryPtr->selectFirst;
|
||
} else {
|
||
/*
|
||
* We're at about the halfway point in the selection;
|
||
* just keep the existing anchor.
|
||
*/
|
||
}
|
||
}
|
||
EntrySelectTo(entryPtr, index);
|
||
} else if ((c == 'f') && (strncmp(argv[2], "from", length) == 0)) {
|
||
if (argc != 4) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " selection from index\"",
|
||
(char *) NULL);
|
||
goto error;
|
||
}
|
||
entryPtr->selectAnchor = index;
|
||
} else if ((c == 'r') && (strncmp(argv[2], "range", length) == 0)) {
|
||
if (argc != 5) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " selection range start end\"",
|
||
(char *) NULL);
|
||
goto error;
|
||
}
|
||
if (GetEntryIndex(interp, entryPtr, argv[4], &index2) != TCL_OK) {
|
||
goto error;
|
||
}
|
||
if (index >= index2) {
|
||
entryPtr->selectFirst = entryPtr->selectLast = -1;
|
||
} else {
|
||
if ((entryPtr->selectFirst == -1)
|
||
&& (entryPtr->exportSelection)) {
|
||
Tk_OwnSelection(entryPtr->tkwin, XA_PRIMARY,
|
||
EntryLostSelection, (ClientData) entryPtr);
|
||
}
|
||
entryPtr->selectFirst = index;
|
||
entryPtr->selectLast = index2;
|
||
}
|
||
if ((entryPtr->selectFirst == -1) && (entryPtr->exportSelection)) {
|
||
Tk_OwnSelection(entryPtr->tkwin, XA_PRIMARY,
|
||
EntryLostSelection, (ClientData) entryPtr);
|
||
}
|
||
EventuallyRedraw(entryPtr);
|
||
} else if ((c == 't') && (strncmp(argv[2], "to", length) == 0)) {
|
||
if (argc != 4) {
|
||
Tcl_AppendResult(interp, "wrong # args: should be \"",
|
||
argv[0], " selection to index\"",
|
||
(char *) NULL);
|
||
goto error;
|
||
}
|
||
EntrySelectTo(entryPtr, index);
|
||
} else {
|
||
Tcl_AppendResult(interp, "bad selection option \"", argv[2],
|
||
"\": must be adjust, clear, from, present, range, or to",
|
||
(char *) NULL);
|
||
goto error;
|
||
}
|
||
} else if ((c == 'x') && (strncmp(argv[1], "xview", length) == 0)) {
|
||
int index, type, count, charsPerPage;
|
||
double fraction, first, last;
|
||
|
||
if (argc == 2) {
|
||
EntryVisibleRange(entryPtr, &first, &last);
|
||
sprintf(interp->result, "%g %g", first, last);
|
||
goto done;
|
||
} else if (argc == 3) {
|
||
if (GetEntryIndex(interp, entryPtr, argv[2], &index) != TCL_OK) {
|
||
goto error;
|
||
}
|
||
} else {
|
||
type = Tk_GetScrollInfo(interp, argc, argv, &fraction, &count);
|
||
index = entryPtr->leftIndex;
|
||
switch (type) {
|
||
case TK_SCROLL_ERROR:
|
||
goto error;
|
||
case TK_SCROLL_MOVETO:
|
||
index = (fraction * entryPtr->numChars) + 0.5;
|
||
break;
|
||
case TK_SCROLL_PAGES:
|
||
charsPerPage = ((Tk_Width(entryPtr->tkwin)
|
||
- 2*entryPtr->inset) / entryPtr->avgWidth) - 2;
|
||
if (charsPerPage < 1) {
|
||
charsPerPage = 1;
|
||
}
|
||
index += charsPerPage*count;
|
||
break;
|
||
case TK_SCROLL_UNITS:
|
||
index += count;
|
||
break;
|
||
}
|
||
}
|
||
if (index >= entryPtr->numChars) {
|
||
index = entryPtr->numChars-1;
|
||
}
|
||
if (index < 0) {
|
||
index = 0;
|
||
}
|
||
entryPtr->leftIndex = index;
|
||
entryPtr->flags |= UPDATE_SCROLLBAR;
|
||
EntryComputeGeometry(entryPtr);
|
||
EventuallyRedraw(entryPtr);
|
||
} else {
|
||
Tcl_AppendResult(interp, "bad option \"", argv[1],
|
||
"\": must be bbox, cget, configure, delete, get, ",
|
||
"icursor, index, insert, scan, selection, or xview",
|
||
(char *) NULL);
|
||
goto error;
|
||
}
|
||
done:
|
||
Tcl_Release((ClientData) entryPtr);
|
||
return result;
|
||
|
||
error:
|
||
Tcl_Release((ClientData) entryPtr);
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* DestroyEntry --
|
||
*
|
||
* This procedure is invoked by Tcl_EventuallyFree or Tcl_Release
|
||
* to clean up the internal structure of an entry at a safe time
|
||
* (when no-one is using it anymore).
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Everything associated with the entry is freed up.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
DestroyEntry(memPtr)
|
||
char *memPtr; /* Info about entry widget. */
|
||
{
|
||
register Entry *entryPtr = (Entry *) memPtr;
|
||
|
||
/*
|
||
* Free up all the stuff that requires special handling, then
|
||
* let Tk_FreeOptions handle all the standard option-related
|
||
* stuff.
|
||
*/
|
||
|
||
ckfree(entryPtr->string);
|
||
if (entryPtr->textVarName != NULL) {
|
||
Tcl_UntraceVar(entryPtr->interp, entryPtr->textVarName,
|
||
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
|
||
EntryTextVarProc, (ClientData) entryPtr);
|
||
}
|
||
if (entryPtr->textGC != None) {
|
||
Tk_FreeGC(entryPtr->display, entryPtr->textGC);
|
||
}
|
||
if (entryPtr->selTextGC != None) {
|
||
Tk_FreeGC(entryPtr->display, entryPtr->selTextGC);
|
||
}
|
||
Tcl_DeleteTimerHandler(entryPtr->insertBlinkHandler);
|
||
if (entryPtr->displayString != NULL) {
|
||
ckfree(entryPtr->displayString);
|
||
}
|
||
Tk_FreeOptions(configSpecs, (char *) entryPtr, entryPtr->display, 0);
|
||
ckfree((char *) entryPtr);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* ConfigureEntry --
|
||
*
|
||
* This procedure is called to process an argv/argc list, plus
|
||
* the Tk option database, in order to configure (or reconfigure)
|
||
* an entry widget.
|
||
*
|
||
* Results:
|
||
* The return value is a standard Tcl result. If TCL_ERROR is
|
||
* returned, then interp->result contains an error message.
|
||
*
|
||
* Side effects:
|
||
* Configuration information, such as colors, border width,
|
||
* etc. get set for entryPtr; old resources get freed,
|
||
* if there were any.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static int
|
||
ConfigureEntry(interp, entryPtr, argc, argv, flags)
|
||
Tcl_Interp *interp; /* Used for error reporting. */
|
||
register Entry *entryPtr; /* Information about widget; may or may
|
||
* not already have values for some fields. */
|
||
int argc; /* Number of valid entries in argv. */
|
||
char **argv; /* Arguments. */
|
||
int flags; /* Flags to pass to Tk_ConfigureWidget. */
|
||
{
|
||
XGCValues gcValues;
|
||
GC new;
|
||
int oldExport;
|
||
|
||
/*
|
||
* Eliminate any existing trace on a variable monitored by the entry.
|
||
*/
|
||
|
||
if (entryPtr->textVarName != NULL) {
|
||
Tcl_UntraceVar(interp, entryPtr->textVarName,
|
||
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
|
||
EntryTextVarProc, (ClientData) entryPtr);
|
||
}
|
||
|
||
oldExport = entryPtr->exportSelection;
|
||
if (Tk_ConfigureWidget(interp, entryPtr->tkwin, configSpecs,
|
||
argc, argv, (char *) entryPtr, flags) != TCL_OK) {
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
/*
|
||
* If the entry is tied to the value of a variable, then set up
|
||
* a trace on the variable's value, create the variable if it doesn't
|
||
* exist, and set the entry's value from the variable's value.
|
||
*/
|
||
|
||
if (entryPtr->textVarName != NULL) {
|
||
char *value;
|
||
|
||
value = Tcl_GetVar(interp, entryPtr->textVarName, TCL_GLOBAL_ONLY);
|
||
if (value == NULL) {
|
||
EntryValueChanged(entryPtr);
|
||
} else {
|
||
EntrySetValue(entryPtr, value);
|
||
}
|
||
Tcl_TraceVar(interp, entryPtr->textVarName,
|
||
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
|
||
EntryTextVarProc, (ClientData) entryPtr);
|
||
}
|
||
|
||
/*
|
||
* A few other options also need special processing, such as parsing
|
||
* the geometry and setting the background from a 3-D border.
|
||
*/
|
||
|
||
if ((entryPtr->state != tkNormalUid)
|
||
&& (entryPtr->state != tkDisabledUid)) {
|
||
Tcl_AppendResult(interp, "bad state value \"", entryPtr->state,
|
||
"\": must be normal or disabled", (char *) NULL);
|
||
entryPtr->state = tkNormalUid;
|
||
return TCL_ERROR;
|
||
}
|
||
|
||
Tk_SetBackgroundFromBorder(entryPtr->tkwin, entryPtr->normalBorder);
|
||
|
||
gcValues.foreground = entryPtr->fgColorPtr->pixel;
|
||
gcValues.font = entryPtr->fontPtr->fid;
|
||
gcValues.graphics_exposures = False;
|
||
new = Tk_GetGC(entryPtr->tkwin, GCForeground|GCFont|GCGraphicsExposures,
|
||
&gcValues);
|
||
if (entryPtr->textGC != None) {
|
||
Tk_FreeGC(entryPtr->display, entryPtr->textGC);
|
||
}
|
||
entryPtr->textGC = new;
|
||
|
||
gcValues.foreground = entryPtr->selFgColorPtr->pixel;
|
||
gcValues.font = entryPtr->fontPtr->fid;
|
||
new = Tk_GetGC(entryPtr->tkwin, GCForeground|GCFont, &gcValues);
|
||
if (entryPtr->selTextGC != None) {
|
||
Tk_FreeGC(entryPtr->display, entryPtr->selTextGC);
|
||
}
|
||
entryPtr->selTextGC = new;
|
||
|
||
if (entryPtr->insertWidth <= 0) {
|
||
entryPtr->insertWidth = 2;
|
||
}
|
||
if (entryPtr->insertBorderWidth > entryPtr->insertWidth/2) {
|
||
entryPtr->insertBorderWidth = entryPtr->insertWidth/2;
|
||
}
|
||
|
||
/*
|
||
* Restart the cursor timing sequence in case the on-time or off-time
|
||
* just changed.
|
||
*/
|
||
|
||
if (entryPtr->flags & GOT_FOCUS) {
|
||
EntryFocusProc(entryPtr, 1);
|
||
}
|
||
|
||
/*
|
||
* Claim the selection if we've suddenly started exporting it.
|
||
*/
|
||
|
||
if (entryPtr->exportSelection && (!oldExport)
|
||
&& (entryPtr->selectFirst != -1)) {
|
||
Tk_OwnSelection(entryPtr->tkwin, XA_PRIMARY, EntryLostSelection,
|
||
(ClientData) entryPtr);
|
||
}
|
||
|
||
/*
|
||
* Recompute the window's geometry and arrange for it to be
|
||
* redisplayed.
|
||
*/
|
||
|
||
Tk_SetInternalBorder(entryPtr->tkwin,
|
||
entryPtr->borderWidth + entryPtr->highlightWidth);
|
||
if (entryPtr->highlightWidth <= 0) {
|
||
entryPtr->highlightWidth = 0;
|
||
}
|
||
entryPtr->inset = entryPtr->highlightWidth + entryPtr->borderWidth + XPAD;
|
||
entryPtr->avgWidth = XTextWidth(entryPtr->fontPtr, "0", 1);
|
||
EntryComputeGeometry(entryPtr);
|
||
entryPtr->flags |= UPDATE_SCROLLBAR;
|
||
EventuallyRedraw(entryPtr);
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*--------------------------------------------------------------
|
||
*
|
||
* DisplayEntry --
|
||
*
|
||
* This procedure redraws the contents of an entry window.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Information appears on the screen.
|
||
*
|
||
*--------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
DisplayEntry(clientData)
|
||
ClientData clientData; /* Information about window. */
|
||
{
|
||
register Entry *entryPtr = (Entry *) clientData;
|
||
register Tk_Window tkwin = entryPtr->tkwin;
|
||
int baseY, selStartX, selEndX, index, cursorX;
|
||
int xBound, count;
|
||
Pixmap pixmap;
|
||
char *displayString;
|
||
|
||
entryPtr->flags &= ~REDRAW_PENDING;
|
||
if ((entryPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) {
|
||
return;
|
||
}
|
||
|
||
/*
|
||
* Update the scrollbar if that's needed.
|
||
*/
|
||
|
||
if (entryPtr->flags & UPDATE_SCROLLBAR) {
|
||
entryPtr->flags &= ~UPDATE_SCROLLBAR;
|
||
EntryUpdateScrollbar(entryPtr);
|
||
}
|
||
|
||
/*
|
||
* In order to avoid screen flashes, this procedure redraws the
|
||
* textual area of the entry into off-screen memory, then copies
|
||
* it back on-screen in a single operation. This means there's
|
||
* no point in time where the on-screen image has been cleared.
|
||
*/
|
||
|
||
pixmap = Tk_GetPixmap(entryPtr->display, Tk_WindowId(tkwin),
|
||
Tk_Width(tkwin), Tk_Height(tkwin), Tk_Depth(tkwin));
|
||
|
||
/*
|
||
* Compute x-coordinate of the pixel just after last visible
|
||
* one, plus vertical position of baseline of text.
|
||
*/
|
||
|
||
xBound = Tk_Width(tkwin) - entryPtr->inset;
|
||
baseY = (Tk_Height(tkwin) + entryPtr->fontPtr->ascent
|
||
- entryPtr->fontPtr->descent)/2;
|
||
|
||
/*
|
||
* Draw the background in three layers. From bottom to top the
|
||
* layers are: normal background, selection background, and
|
||
* insertion cursor background.
|
||
*/
|
||
|
||
Tk_Fill3DRectangle(tkwin, pixmap, entryPtr->normalBorder,
|
||
0, 0, Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT);
|
||
if (entryPtr->displayString == NULL) {
|
||
displayString = entryPtr->string;
|
||
} else {
|
||
displayString = entryPtr->displayString;
|
||
}
|
||
if (entryPtr->selectLast > entryPtr->leftIndex) {
|
||
if (entryPtr->selectFirst <= entryPtr->leftIndex) {
|
||
selStartX = entryPtr->leftX;
|
||
index = entryPtr->leftIndex;
|
||
} else {
|
||
(void) TkMeasureChars(entryPtr->fontPtr,
|
||
displayString + entryPtr->leftIndex,
|
||
entryPtr->selectFirst - entryPtr->leftIndex,
|
||
entryPtr->leftX, xBound, entryPtr->tabOrigin,
|
||
TK_PARTIAL_OK|TK_NEWLINES_NOT_SPECIAL, &selStartX);
|
||
index = entryPtr->selectFirst;
|
||
}
|
||
if ((selStartX - entryPtr->selBorderWidth) < xBound) {
|
||
(void) TkMeasureChars(entryPtr->fontPtr,
|
||
displayString + index, entryPtr->selectLast - index,
|
||
selStartX, xBound, entryPtr->tabOrigin,
|
||
TK_PARTIAL_OK|TK_NEWLINES_NOT_SPECIAL, &selEndX);
|
||
Tk_Fill3DRectangle(tkwin, pixmap, entryPtr->selBorder,
|
||
selStartX - entryPtr->selBorderWidth,
|
||
baseY - entryPtr->fontPtr->ascent
|
||
- entryPtr->selBorderWidth,
|
||
(selEndX - selStartX) + 2*entryPtr->selBorderWidth,
|
||
entryPtr->fontPtr->ascent + entryPtr->fontPtr->descent
|
||
+ 2*entryPtr->selBorderWidth,
|
||
entryPtr->selBorderWidth, TK_RELIEF_RAISED);
|
||
} else {
|
||
selEndX = xBound;
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Draw a special background for the insertion cursor, overriding
|
||
* even the selection background. As a special hack to keep the
|
||
* cursor visible when the insertion cursor color is the same as
|
||
* the color for selected text (e.g., on mono displays), write
|
||
* background in the cursor area (instead of nothing) when the
|
||
* cursor isn't on. Otherwise the selection would hide the cursor.
|
||
*/
|
||
|
||
if ((entryPtr->insertPos >= entryPtr->leftIndex)
|
||
&& (entryPtr->state == tkNormalUid)
|
||
&& (entryPtr->flags & GOT_FOCUS)) {
|
||
(void) TkMeasureChars(entryPtr->fontPtr,
|
||
displayString + entryPtr->leftIndex,
|
||
entryPtr->insertPos - entryPtr->leftIndex, entryPtr->leftX,
|
||
xBound + entryPtr->insertWidth, entryPtr->tabOrigin,
|
||
TK_PARTIAL_OK|TK_NEWLINES_NOT_SPECIAL, &cursorX);
|
||
cursorX -= (entryPtr->insertWidth)/2;
|
||
if (cursorX < xBound) {
|
||
if (entryPtr->flags & CURSOR_ON) {
|
||
Tk_Fill3DRectangle(tkwin, pixmap, entryPtr->insertBorder,
|
||
cursorX, baseY - entryPtr->fontPtr->ascent,
|
||
entryPtr->insertWidth,
|
||
entryPtr->fontPtr->ascent + entryPtr->fontPtr->descent,
|
||
entryPtr->insertBorderWidth, TK_RELIEF_RAISED);
|
||
} else if (entryPtr->insertBorder == entryPtr->selBorder) {
|
||
Tk_Fill3DRectangle(tkwin, pixmap, entryPtr->normalBorder,
|
||
cursorX, baseY - entryPtr->fontPtr->ascent,
|
||
entryPtr->insertWidth,
|
||
entryPtr->fontPtr->ascent + entryPtr->fontPtr->descent,
|
||
0, TK_RELIEF_FLAT);
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Draw the text in three pieces: first the piece to the left of
|
||
* the selection, then the selection, then the piece to the right
|
||
* of the selection.
|
||
*/
|
||
|
||
if (entryPtr->selectLast <= entryPtr->leftIndex) {
|
||
TkDisplayChars(entryPtr->display, pixmap, entryPtr->textGC,
|
||
entryPtr->fontPtr, displayString + entryPtr->leftIndex,
|
||
entryPtr->numChars - entryPtr->leftIndex, entryPtr->leftX,
|
||
baseY, entryPtr->tabOrigin, TK_NEWLINES_NOT_SPECIAL);
|
||
} else {
|
||
count = entryPtr->selectFirst - entryPtr->leftIndex;
|
||
if (count > 0) {
|
||
TkDisplayChars(entryPtr->display, pixmap, entryPtr->textGC,
|
||
entryPtr->fontPtr, displayString + entryPtr->leftIndex,
|
||
count, entryPtr->leftX, baseY, entryPtr->tabOrigin,
|
||
TK_NEWLINES_NOT_SPECIAL);
|
||
index = entryPtr->selectFirst;
|
||
} else {
|
||
index = entryPtr->leftIndex;
|
||
}
|
||
count = entryPtr->selectLast - index;
|
||
if ((selStartX < xBound) && (count > 0)) {
|
||
TkDisplayChars(entryPtr->display, pixmap, entryPtr->selTextGC,
|
||
entryPtr->fontPtr, displayString + index, count,
|
||
selStartX, baseY, entryPtr->tabOrigin,
|
||
TK_NEWLINES_NOT_SPECIAL);
|
||
}
|
||
count = entryPtr->numChars - entryPtr->selectLast;
|
||
if ((selEndX < xBound) && (count > 0)) {
|
||
TkDisplayChars(entryPtr->display, pixmap, entryPtr->textGC,
|
||
entryPtr->fontPtr,
|
||
displayString + entryPtr->selectLast,
|
||
count, selEndX, baseY, entryPtr->tabOrigin,
|
||
TK_NEWLINES_NOT_SPECIAL);
|
||
}
|
||
}
|
||
|
||
/*
|
||
* Draw the border and focus highlight last, so they will overwrite
|
||
* any text that extends past the viewable part of the window.
|
||
*/
|
||
|
||
if (entryPtr->relief != TK_RELIEF_FLAT) {
|
||
Tk_Draw3DRectangle(tkwin, pixmap, entryPtr->normalBorder,
|
||
entryPtr->highlightWidth, entryPtr->highlightWidth,
|
||
Tk_Width(tkwin) - 2*entryPtr->highlightWidth,
|
||
Tk_Height(tkwin) - 2*entryPtr->highlightWidth,
|
||
entryPtr->borderWidth, entryPtr->relief);
|
||
}
|
||
if (entryPtr->highlightWidth != 0) {
|
||
GC gc;
|
||
|
||
if (entryPtr->flags & GOT_FOCUS) {
|
||
gc = Tk_GCForColor(entryPtr->highlightColorPtr, pixmap);
|
||
} else {
|
||
gc = Tk_GCForColor(entryPtr->highlightBgColorPtr, pixmap);
|
||
}
|
||
Tk_DrawFocusHighlight(tkwin, gc, entryPtr->highlightWidth, pixmap);
|
||
}
|
||
|
||
/*
|
||
* Everything's been redisplayed; now copy the pixmap onto the screen
|
||
* and free up the pixmap.
|
||
*/
|
||
|
||
XCopyArea(entryPtr->display, pixmap, Tk_WindowId(tkwin), entryPtr->textGC,
|
||
0, 0, (unsigned) Tk_Width(tkwin), (unsigned) Tk_Height(tkwin),
|
||
0, 0);
|
||
Tk_FreePixmap(entryPtr->display, pixmap);
|
||
entryPtr->flags &= ~BORDER_NEEDED;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* EntryComputeGeometry --
|
||
*
|
||
* This procedure is invoked to recompute information about where
|
||
* in its window an entry's string will be displayed. It also
|
||
* computes the requested size for the window.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* The leftX and tabOrigin fields are recomputed for entryPtr,
|
||
* and leftIndex may be adjusted. Tk_GeometryRequest is called
|
||
* to register the desired dimensions for the window.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
EntryComputeGeometry(entryPtr)
|
||
Entry *entryPtr; /* Widget record for entry. */
|
||
{
|
||
int totalLength, overflow, maxOffScreen, rightX;
|
||
int fontHeight, height, width, i;
|
||
char *p, *displayString;
|
||
|
||
/*
|
||
* If we're displaying a special character instead of the value of
|
||
* the entry, recompute the displayString.
|
||
*/
|
||
|
||
if (entryPtr->displayString != NULL) {
|
||
ckfree(entryPtr->displayString);
|
||
entryPtr->displayString = NULL;
|
||
}
|
||
if (entryPtr->showChar != NULL) {
|
||
entryPtr->displayString = (char *) ckalloc((unsigned)
|
||
(entryPtr->numChars + 1));
|
||
for (p = entryPtr->displayString, i = entryPtr->numChars; i > 0;
|
||
i--, p++) {
|
||
*p = entryPtr->showChar[0];
|
||
}
|
||
*p = 0;
|
||
displayString = entryPtr->displayString;
|
||
} else {
|
||
displayString = entryPtr->string;
|
||
}
|
||
|
||
/*
|
||
* Recompute where the leftmost character on the display will
|
||
* be drawn (entryPtr->leftX) and adjust leftIndex if necessary
|
||
* so that we don't let characters hang off the edge of the
|
||
* window unless the entire window is full.
|
||
*/
|
||
|
||
TkMeasureChars(entryPtr->fontPtr, displayString, entryPtr->numChars,
|
||
0, INT_MAX, 0, TK_NEWLINES_NOT_SPECIAL, &totalLength);
|
||
overflow = totalLength - (Tk_Width(entryPtr->tkwin) - 2*entryPtr->inset);
|
||
if (overflow <= 0) {
|
||
entryPtr->leftIndex = 0;
|
||
if (entryPtr->justify == TK_JUSTIFY_LEFT) {
|
||
entryPtr->leftX = entryPtr->inset;
|
||
} else if (entryPtr->justify == TK_JUSTIFY_RIGHT) {
|
||
entryPtr->leftX = Tk_Width(entryPtr->tkwin) - entryPtr->inset
|
||
- totalLength;
|
||
} else {
|
||
entryPtr->leftX = (Tk_Width(entryPtr->tkwin) - totalLength)/2;
|
||
}
|
||
entryPtr->tabOrigin = entryPtr->leftX;
|
||
} else {
|
||
/*
|
||
* The whole string can't fit in the window. Compute the
|
||
* maximum number of characters that may be off-screen to
|
||
* the left without leaving empty space on the right of the
|
||
* window, then don't let leftIndex be any greater than that.
|
||
*/
|
||
|
||
maxOffScreen = TkMeasureChars(entryPtr->fontPtr, displayString,
|
||
entryPtr->numChars, 0, overflow, 0,
|
||
TK_NEWLINES_NOT_SPECIAL|TK_PARTIAL_OK, &rightX);
|
||
if (rightX < overflow) {
|
||
maxOffScreen += 1;
|
||
}
|
||
if (entryPtr->leftIndex > maxOffScreen) {
|
||
entryPtr->leftIndex = maxOffScreen;
|
||
}
|
||
TkMeasureChars(entryPtr->fontPtr, displayString,
|
||
entryPtr->leftIndex, 0, INT_MAX, 0,
|
||
TK_NEWLINES_NOT_SPECIAL|TK_PARTIAL_OK, &rightX);
|
||
entryPtr->leftX = entryPtr->inset;
|
||
entryPtr->tabOrigin = entryPtr->leftX - rightX;
|
||
}
|
||
|
||
fontHeight = entryPtr->fontPtr->ascent + entryPtr->fontPtr->descent;
|
||
height = fontHeight + 2*entryPtr->inset + 2*(YPAD-XPAD);
|
||
if (entryPtr->prefWidth > 0) {
|
||
width = entryPtr->prefWidth*entryPtr->avgWidth + 2*entryPtr->inset;
|
||
} else {
|
||
if (totalLength == 0) {
|
||
width = entryPtr->avgWidth + 2*entryPtr->inset;
|
||
} else {
|
||
width = totalLength + 2*entryPtr->inset;
|
||
}
|
||
}
|
||
Tk_GeometryRequest(entryPtr->tkwin, width, height);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* InsertChars --
|
||
*
|
||
* Add new characters to an entry widget.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* New information gets added to entryPtr; it will be redisplayed
|
||
* soon, but not necessarily immediately.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
InsertChars(entryPtr, index, string)
|
||
register Entry *entryPtr; /* Entry that is to get the new
|
||
* elements. */
|
||
int index; /* Add the new elements before this
|
||
* element. */
|
||
char *string; /* New characters to add (NULL-terminated
|
||
* string). */
|
||
{
|
||
int length;
|
||
char *new;
|
||
|
||
length = strlen(string);
|
||
if (length == 0) {
|
||
return;
|
||
}
|
||
new = (char *) ckalloc((unsigned) (entryPtr->numChars + length + 1));
|
||
strncpy(new, entryPtr->string, (size_t) index);
|
||
strcpy(new+index, string);
|
||
strcpy(new+index+length, entryPtr->string+index);
|
||
ckfree(entryPtr->string);
|
||
entryPtr->string = new;
|
||
entryPtr->numChars += length;
|
||
|
||
/*
|
||
* Inserting characters invalidates all indexes into the string.
|
||
* Touch up the indexes so that they still refer to the same
|
||
* characters (at new positions). When updating the selection
|
||
* end-points, don't include the new text in the selection unless
|
||
* it was completely surrounded by the selection.
|
||
*/
|
||
|
||
if (entryPtr->selectFirst >= index) {
|
||
entryPtr->selectFirst += length;
|
||
}
|
||
if (entryPtr->selectLast > index) {
|
||
entryPtr->selectLast += length;
|
||
}
|
||
if ((entryPtr->selectAnchor > index) || (entryPtr->selectFirst >= index)) {
|
||
entryPtr->selectAnchor += length;
|
||
}
|
||
if (entryPtr->leftIndex > index) {
|
||
entryPtr->leftIndex += length;
|
||
}
|
||
if (entryPtr->insertPos >= index) {
|
||
entryPtr->insertPos += length;
|
||
}
|
||
EntryValueChanged(entryPtr);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* DeleteChars --
|
||
*
|
||
* Remove one or more characters from an entry widget.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Memory gets freed, the entry gets modified and (eventually)
|
||
* redisplayed.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
DeleteChars(entryPtr, index, count)
|
||
register Entry *entryPtr; /* Entry widget to modify. */
|
||
int index; /* Index of first character to delete. */
|
||
int count; /* How many characters to delete. */
|
||
{
|
||
char *new;
|
||
|
||
if ((index + count) > entryPtr->numChars) {
|
||
count = entryPtr->numChars - index;
|
||
}
|
||
if (count <= 0) {
|
||
return;
|
||
}
|
||
|
||
new = (char *) ckalloc((unsigned) (entryPtr->numChars + 1 - count));
|
||
strncpy(new, entryPtr->string, (size_t) index);
|
||
strcpy(new+index, entryPtr->string+index+count);
|
||
ckfree(entryPtr->string);
|
||
entryPtr->string = new;
|
||
entryPtr->numChars -= count;
|
||
|
||
/*
|
||
* Deleting characters results in the remaining characters being
|
||
* renumbered. Update the various indexes into the string to reflect
|
||
* this change.
|
||
*/
|
||
|
||
if (entryPtr->selectFirst >= index) {
|
||
if (entryPtr->selectFirst >= (index+count)) {
|
||
entryPtr->selectFirst -= count;
|
||
} else {
|
||
entryPtr->selectFirst = index;
|
||
}
|
||
}
|
||
if (entryPtr->selectLast >= index) {
|
||
if (entryPtr->selectLast >= (index+count)) {
|
||
entryPtr->selectLast -= count;
|
||
} else {
|
||
entryPtr->selectLast = index;
|
||
}
|
||
}
|
||
if (entryPtr->selectLast <= entryPtr->selectFirst) {
|
||
entryPtr->selectFirst = entryPtr->selectLast = -1;
|
||
}
|
||
if (entryPtr->selectAnchor >= index) {
|
||
if (entryPtr->selectAnchor >= (index+count)) {
|
||
entryPtr->selectAnchor -= count;
|
||
} else {
|
||
entryPtr->selectAnchor = index;
|
||
}
|
||
}
|
||
if (entryPtr->leftIndex > index) {
|
||
if (entryPtr->leftIndex >= (index+count)) {
|
||
entryPtr->leftIndex -= count;
|
||
} else {
|
||
entryPtr->leftIndex = index;
|
||
}
|
||
}
|
||
if (entryPtr->insertPos >= index) {
|
||
if (entryPtr->insertPos >= (index+count)) {
|
||
entryPtr->insertPos -= count;
|
||
} else {
|
||
entryPtr->insertPos = index;
|
||
}
|
||
}
|
||
EntryValueChanged(entryPtr);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* EntryValueChanged --
|
||
*
|
||
* This procedure is invoked when characters are inserted into
|
||
* an entry or deleted from it. It updates the entry's associated
|
||
* variable, if there is one, and does other bookkeeping such
|
||
* as arranging for redisplay.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
EntryValueChanged(entryPtr)
|
||
Entry *entryPtr; /* Entry whose value just changed. */
|
||
{
|
||
char *newValue;
|
||
|
||
if (entryPtr->textVarName == NULL) {
|
||
newValue = NULL;
|
||
} else {
|
||
newValue = Tcl_SetVar(entryPtr->interp, entryPtr->textVarName,
|
||
entryPtr->string, TCL_GLOBAL_ONLY);
|
||
}
|
||
|
||
if ((newValue != NULL) && (strcmp(newValue, entryPtr->string) != 0)) {
|
||
/*
|
||
* The value of the variable is different than what we asked for.
|
||
* This means that a trace on the variable modified it. In this
|
||
* case our trace procedure wasn't invoked since the modification
|
||
* came while a trace was already active on the variable. So,
|
||
* update our value to reflect the variable's latest value.
|
||
*/
|
||
|
||
EntrySetValue(entryPtr, newValue);
|
||
} else {
|
||
/*
|
||
* Arrange for redisplay.
|
||
*/
|
||
|
||
entryPtr->flags |= UPDATE_SCROLLBAR;
|
||
EntryComputeGeometry(entryPtr);
|
||
EventuallyRedraw(entryPtr);
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* EntrySetValue --
|
||
*
|
||
* Replace the contents of a text entry with a given value. This
|
||
* procedure is invoked when updating the entry from the entry's
|
||
* associated variable.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* The string displayed in the entry will change. The selection,
|
||
* insertion point, and view may have to be adjusted to keep them
|
||
* within the bounds of the new string. Note: this procedure does
|
||
* *not* update the entry's associated variable, since that could
|
||
* result in an infinite loop.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
EntrySetValue(entryPtr, value)
|
||
register Entry *entryPtr; /* Entry whose value is to be
|
||
* changed. */
|
||
char *value; /* New text to display in entry. */
|
||
{
|
||
ckfree(entryPtr->string);
|
||
entryPtr->numChars = strlen(value);
|
||
entryPtr->string = (char *) ckalloc((unsigned) (entryPtr->numChars + 1));
|
||
strcpy(entryPtr->string, value);
|
||
if (entryPtr->selectFirst != -1) {
|
||
if (entryPtr->selectFirst >= entryPtr->numChars) {
|
||
entryPtr->selectFirst = entryPtr->selectLast = -1;
|
||
} else if (entryPtr->selectLast > entryPtr->numChars) {
|
||
entryPtr->selectLast = entryPtr->numChars;
|
||
}
|
||
}
|
||
if (entryPtr->leftIndex >= entryPtr->numChars) {
|
||
entryPtr->leftIndex = entryPtr->numChars-1;
|
||
}
|
||
if (entryPtr->insertPos > entryPtr->numChars) {
|
||
entryPtr->insertPos = entryPtr->numChars;
|
||
}
|
||
|
||
entryPtr->flags |= UPDATE_SCROLLBAR;
|
||
EntryComputeGeometry(entryPtr);
|
||
EventuallyRedraw(entryPtr);
|
||
}
|
||
|
||
/*
|
||
*--------------------------------------------------------------
|
||
*
|
||
* EntryEventProc --
|
||
*
|
||
* This procedure is invoked by the Tk dispatcher for various
|
||
* events on entryes.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* When the window gets deleted, internal structures get
|
||
* cleaned up. When it gets exposed, it is redisplayed.
|
||
*
|
||
*--------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
EntryEventProc(clientData, eventPtr)
|
||
ClientData clientData; /* Information about window. */
|
||
XEvent *eventPtr; /* Information about event. */
|
||
{
|
||
Entry *entryPtr = (Entry *) clientData;
|
||
if (eventPtr->type == Expose) {
|
||
EventuallyRedraw(entryPtr);
|
||
entryPtr->flags |= BORDER_NEEDED;
|
||
} else if (eventPtr->type == DestroyNotify) {
|
||
if (entryPtr->tkwin != NULL) {
|
||
entryPtr->tkwin = NULL;
|
||
Tcl_DeleteCommand(entryPtr->interp,
|
||
Tcl_GetCommandName(entryPtr->interp, entryPtr->widgetCmd));
|
||
}
|
||
if (entryPtr->flags & REDRAW_PENDING) {
|
||
Tcl_CancelIdleCall(DisplayEntry, (ClientData) entryPtr);
|
||
}
|
||
Tcl_EventuallyFree((ClientData) entryPtr, DestroyEntry);
|
||
} else if (eventPtr->type == ConfigureNotify) {
|
||
Tcl_Preserve((ClientData) entryPtr);
|
||
entryPtr->flags |= UPDATE_SCROLLBAR;
|
||
EntryComputeGeometry(entryPtr);
|
||
EventuallyRedraw(entryPtr);
|
||
Tcl_Release((ClientData) entryPtr);
|
||
} else if (eventPtr->type == FocusIn) {
|
||
if (eventPtr->xfocus.detail != NotifyInferior) {
|
||
EntryFocusProc(entryPtr, 1);
|
||
}
|
||
} else if (eventPtr->type == FocusOut) {
|
||
if (eventPtr->xfocus.detail != NotifyInferior) {
|
||
EntryFocusProc(entryPtr, 0);
|
||
}
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* EntryCmdDeletedProc --
|
||
*
|
||
* This procedure is invoked when a widget command is deleted. If
|
||
* the widget isn't already in the process of being destroyed,
|
||
* this command destroys it.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* The widget is destroyed.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
EntryCmdDeletedProc(clientData)
|
||
ClientData clientData; /* Pointer to widget record for widget. */
|
||
{
|
||
Entry *entryPtr = (Entry *) clientData;
|
||
Tk_Window tkwin = entryPtr->tkwin;
|
||
|
||
/*
|
||
* This procedure could be invoked either because the window was
|
||
* destroyed and the command was then deleted (in which case tkwin
|
||
* is NULL) or because the command was deleted, and then this procedure
|
||
* destroys the widget.
|
||
*/
|
||
|
||
if (tkwin != NULL) {
|
||
entryPtr->tkwin = NULL;
|
||
Tk_DestroyWindow(tkwin);
|
||
}
|
||
}
|
||
|
||
/*
|
||
*--------------------------------------------------------------
|
||
*
|
||
* GetEntryIndex --
|
||
*
|
||
* Parse an index into an entry and return either its value
|
||
* or an error.
|
||
*
|
||
* Results:
|
||
* A standard Tcl result. If all went well, then *indexPtr is
|
||
* filled in with the index (into entryPtr) corresponding to
|
||
* string. The index value is guaranteed to lie between 0 and
|
||
* the number of characters in the string, inclusive. If an
|
||
* error occurs then an error message is left in interp->result.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*--------------------------------------------------------------
|
||
*/
|
||
|
||
static int
|
||
GetEntryIndex(interp, entryPtr, string, indexPtr)
|
||
Tcl_Interp *interp; /* For error messages. */
|
||
Entry *entryPtr; /* Entry for which the index is being
|
||
* specified. */
|
||
char *string; /* Specifies character in entryPtr. */
|
||
int *indexPtr; /* Where to store converted index. */
|
||
{
|
||
size_t length;
|
||
|
||
length = strlen(string);
|
||
|
||
if (string[0] == 'a') {
|
||
if (strncmp(string, "anchor", length) == 0) {
|
||
*indexPtr = entryPtr->selectAnchor;
|
||
} else {
|
||
badIndex:
|
||
|
||
/*
|
||
* Some of the paths here leave messages in interp->result,
|
||
* so we have to clear it out before storing our own message.
|
||
*/
|
||
|
||
Tcl_SetResult(interp, (char *) NULL, TCL_STATIC);
|
||
Tcl_AppendResult(interp, "bad entry index \"", string,
|
||
"\"", (char *) NULL);
|
||
return TCL_ERROR;
|
||
}
|
||
} else if (string[0] == 'e') {
|
||
if (strncmp(string, "end", length) == 0) {
|
||
*indexPtr = entryPtr->numChars;
|
||
} else {
|
||
goto badIndex;
|
||
}
|
||
} else if (string[0] == 'i') {
|
||
if (strncmp(string, "insert", length) == 0) {
|
||
*indexPtr = entryPtr->insertPos;
|
||
} else {
|
||
goto badIndex;
|
||
}
|
||
} else if (string[0] == 's') {
|
||
if (entryPtr->selectFirst == -1) {
|
||
interp->result = "selection isn't in entry";
|
||
return TCL_ERROR;
|
||
}
|
||
if (length < 5) {
|
||
goto badIndex;
|
||
}
|
||
if (strncmp(string, "sel.first", length) == 0) {
|
||
*indexPtr = entryPtr->selectFirst;
|
||
} else if (strncmp(string, "sel.last", length) == 0) {
|
||
*indexPtr = entryPtr->selectLast;
|
||
} else {
|
||
goto badIndex;
|
||
}
|
||
} else if (string[0] == '@') {
|
||
int x, dummy, roundUp;
|
||
|
||
if (Tcl_GetInt(interp, string+1, &x) != TCL_OK) {
|
||
goto badIndex;
|
||
}
|
||
if (x < entryPtr->inset) {
|
||
x = entryPtr->inset;
|
||
}
|
||
roundUp = 0;
|
||
if (x >= (Tk_Width(entryPtr->tkwin) - entryPtr->inset)) {
|
||
x = Tk_Width(entryPtr->tkwin) - entryPtr->inset - 1;
|
||
roundUp = 1;
|
||
}
|
||
if (entryPtr->numChars == 0) {
|
||
*indexPtr = 0;
|
||
} else {
|
||
*indexPtr = TkMeasureChars(entryPtr->fontPtr,
|
||
(entryPtr->displayString == NULL) ? entryPtr->string
|
||
: entryPtr->displayString,
|
||
entryPtr->numChars, entryPtr->tabOrigin, x,
|
||
entryPtr->tabOrigin, TK_NEWLINES_NOT_SPECIAL, &dummy);
|
||
}
|
||
|
||
/*
|
||
* Special trick: if the x-position was off-screen to the right,
|
||
* round the index up to refer to the character just after the
|
||
* last visible one on the screen. This is needed to enable the
|
||
* last character to be selected, for example.
|
||
*/
|
||
|
||
if (roundUp && (*indexPtr < entryPtr->numChars)) {
|
||
*indexPtr += 1;
|
||
}
|
||
} else {
|
||
if (Tcl_GetInt(interp, string, indexPtr) != TCL_OK) {
|
||
goto badIndex;
|
||
}
|
||
if (*indexPtr < 0){
|
||
*indexPtr = 0;
|
||
} else if (*indexPtr > entryPtr->numChars) {
|
||
*indexPtr = entryPtr->numChars;
|
||
}
|
||
}
|
||
return TCL_OK;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* EntryScanTo --
|
||
*
|
||
* Given a y-coordinate (presumably of the curent mouse location)
|
||
* drag the view in the window to implement the scan operation.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* The view in the window may change.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
EntryScanTo(entryPtr, x)
|
||
register Entry *entryPtr; /* Information about widget. */
|
||
int x; /* X-coordinate to use for scan
|
||
* operation. */
|
||
{
|
||
int newLeftIndex;
|
||
|
||
/*
|
||
* Compute new leftIndex for entry by amplifying the difference
|
||
* between the current position and the place where the scan
|
||
* started (the "mark" position). If we run off the left or right
|
||
* side of the entry, then reset the mark point so that the current
|
||
* position continues to correspond to the edge of the window.
|
||
* This means that the picture will start dragging as soon as the
|
||
* mouse reverses direction (without this reset, might have to slide
|
||
* mouse a long ways back before the picture starts moving again).
|
||
*/
|
||
|
||
newLeftIndex = entryPtr->scanMarkIndex
|
||
- (10*(x - entryPtr->scanMarkX))/entryPtr->avgWidth;
|
||
if (newLeftIndex >= entryPtr->numChars) {
|
||
newLeftIndex = entryPtr->scanMarkIndex = entryPtr->numChars-1;
|
||
entryPtr->scanMarkX = x;
|
||
}
|
||
if (newLeftIndex < 0) {
|
||
newLeftIndex = entryPtr->scanMarkIndex = 0;
|
||
entryPtr->scanMarkX = x;
|
||
}
|
||
if (newLeftIndex != entryPtr->leftIndex) {
|
||
entryPtr->leftIndex = newLeftIndex;
|
||
entryPtr->flags |= UPDATE_SCROLLBAR;
|
||
EntryComputeGeometry(entryPtr);
|
||
EventuallyRedraw(entryPtr);
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* EntrySelectTo --
|
||
*
|
||
* Modify the selection by moving its un-anchored end. This could
|
||
* make the selection either larger or smaller.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* The selection changes.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
EntrySelectTo(entryPtr, index)
|
||
register Entry *entryPtr; /* Information about widget. */
|
||
int index; /* Index of element that is to
|
||
* become the "other" end of the
|
||
* selection. */
|
||
{
|
||
int newFirst, newLast;
|
||
|
||
/*
|
||
* Grab the selection if we don't own it already.
|
||
*/
|
||
|
||
if ((entryPtr->selectFirst == -1) && (entryPtr->exportSelection)) {
|
||
Tk_OwnSelection(entryPtr->tkwin, XA_PRIMARY, EntryLostSelection,
|
||
(ClientData) entryPtr);
|
||
}
|
||
|
||
/*
|
||
* Pick new starting and ending points for the selection.
|
||
*/
|
||
|
||
if (entryPtr->selectAnchor > entryPtr->numChars) {
|
||
entryPtr->selectAnchor = entryPtr->numChars;
|
||
}
|
||
if (entryPtr->selectAnchor <= index) {
|
||
newFirst = entryPtr->selectAnchor;
|
||
newLast = index;
|
||
} else {
|
||
newFirst = index;
|
||
newLast = entryPtr->selectAnchor;
|
||
if (newLast < 0) {
|
||
newFirst = newLast = -1;
|
||
}
|
||
}
|
||
if ((entryPtr->selectFirst == newFirst)
|
||
&& (entryPtr->selectLast == newLast)) {
|
||
return;
|
||
}
|
||
entryPtr->selectFirst = newFirst;
|
||
entryPtr->selectLast = newLast;
|
||
EventuallyRedraw(entryPtr);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* EntryFetchSelection --
|
||
*
|
||
* This procedure is called back by Tk when the selection is
|
||
* requested by someone. It returns part or all of the selection
|
||
* in a buffer provided by the caller.
|
||
*
|
||
* Results:
|
||
* The return value is the number of non-NULL bytes stored
|
||
* at buffer. Buffer is filled (or partially filled) with a
|
||
* NULL-terminated string containing part or all of the selection,
|
||
* as given by offset and maxBytes.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static int
|
||
EntryFetchSelection(clientData, offset, buffer, maxBytes)
|
||
ClientData clientData; /* Information about entry widget. */
|
||
int offset; /* Offset within selection of first
|
||
* character to be returned. */
|
||
char *buffer; /* Location in which to place
|
||
* selection. */
|
||
int maxBytes; /* Maximum number of bytes to place
|
||
* at buffer, not including terminating
|
||
* NULL character. */
|
||
{
|
||
Entry *entryPtr = (Entry *) clientData;
|
||
int count;
|
||
char *displayString;
|
||
|
||
if ((entryPtr->selectFirst < 0) || !(entryPtr->exportSelection)) {
|
||
return -1;
|
||
}
|
||
count = entryPtr->selectLast - entryPtr->selectFirst - offset;
|
||
if (count > maxBytes) {
|
||
count = maxBytes;
|
||
}
|
||
if (count <= 0) {
|
||
return 0;
|
||
}
|
||
if (entryPtr->displayString == NULL) {
|
||
displayString = entryPtr->string;
|
||
} else {
|
||
displayString = entryPtr->displayString;
|
||
}
|
||
strncpy(buffer, displayString + entryPtr->selectFirst + offset,
|
||
(size_t) count);
|
||
buffer[count] = '\0';
|
||
return count;
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* EntryLostSelection --
|
||
*
|
||
* This procedure is called back by Tk when the selection is
|
||
* grabbed away from an entry widget.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* The existing selection is unhighlighted, and the window is
|
||
* marked as not containing a selection.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
EntryLostSelection(clientData)
|
||
ClientData clientData; /* Information about entry widget. */
|
||
{
|
||
Entry *entryPtr = (Entry *) clientData;
|
||
|
||
if ((entryPtr->selectFirst != -1) && entryPtr->exportSelection) {
|
||
entryPtr->selectFirst = -1;
|
||
entryPtr->selectLast = -1;
|
||
EventuallyRedraw(entryPtr);
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* EventuallyRedraw --
|
||
*
|
||
* Ensure that an entry is eventually redrawn on the display.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* Information gets redisplayed. Right now we don't do selective
|
||
* redisplays: the whole window will be redrawn. This doesn't
|
||
* seem to hurt performance noticeably, but if it does then this
|
||
* could be changed.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
EventuallyRedraw(entryPtr)
|
||
register Entry *entryPtr; /* Information about widget. */
|
||
{
|
||
if ((entryPtr->tkwin == NULL) || !Tk_IsMapped(entryPtr->tkwin)) {
|
||
return;
|
||
}
|
||
|
||
/*
|
||
* Right now we don't do selective redisplays: the whole window
|
||
* will be redrawn. This doesn't seem to hurt performance noticeably,
|
||
* but if it does then this could be changed.
|
||
*/
|
||
|
||
if (!(entryPtr->flags & REDRAW_PENDING)) {
|
||
entryPtr->flags |= REDRAW_PENDING;
|
||
Tcl_DoWhenIdle(DisplayEntry, (ClientData) entryPtr);
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* EntryVisibleRange --
|
||
*
|
||
* Return information about the range of the entry that is
|
||
* currently visible.
|
||
*
|
||
* Results:
|
||
* *firstPtr and *lastPtr are modified to hold fractions between
|
||
* 0 and 1 identifying the range of characters visible in the
|
||
* entry.
|
||
*
|
||
* Side effects:
|
||
* None.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
EntryVisibleRange(entryPtr, firstPtr, lastPtr)
|
||
Entry *entryPtr; /* Information about widget. */
|
||
double *firstPtr; /* Return position of first visible
|
||
* character in widget. */
|
||
double *lastPtr; /* Return position of char just after
|
||
* last visible one. */
|
||
{
|
||
char *displayString;
|
||
int charsInWindow, endX;
|
||
|
||
if (entryPtr->displayString == NULL) {
|
||
displayString = entryPtr->string;
|
||
} else {
|
||
displayString = entryPtr->displayString;
|
||
}
|
||
if (entryPtr->numChars == 0) {
|
||
*firstPtr = 0.0;
|
||
*lastPtr = 1.0;
|
||
} else {
|
||
charsInWindow = TkMeasureChars(entryPtr->fontPtr,
|
||
displayString + entryPtr->leftIndex,
|
||
entryPtr->numChars - entryPtr->leftIndex, entryPtr->inset,
|
||
Tk_Width(entryPtr->tkwin) - entryPtr->inset, entryPtr->inset,
|
||
TK_AT_LEAST_ONE|TK_NEWLINES_NOT_SPECIAL, &endX);
|
||
*firstPtr = ((double) entryPtr->leftIndex)/entryPtr->numChars;
|
||
*lastPtr = ((double) (entryPtr->leftIndex + charsInWindow))
|
||
/entryPtr->numChars;
|
||
}
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* EntryUpdateScrollbar --
|
||
*
|
||
* This procedure is invoked whenever information has changed in
|
||
* an entry in a way that would invalidate a scrollbar display.
|
||
* If there is an associated scrollbar, then this procedure updates
|
||
* it by invoking a Tcl command.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* A Tcl command is invoked, and an additional command may be
|
||
* invoked to process errors in the command.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
EntryUpdateScrollbar(entryPtr)
|
||
Entry *entryPtr; /* Information about widget. */
|
||
{
|
||
char args[100];
|
||
int code;
|
||
double first, last;
|
||
Tcl_Interp *interp;
|
||
|
||
if (entryPtr->scrollCmd == NULL) {
|
||
return;
|
||
}
|
||
|
||
interp = entryPtr->interp;
|
||
Tcl_Preserve((ClientData) interp);
|
||
EntryVisibleRange(entryPtr, &first, &last);
|
||
sprintf(args, " %g %g", first, last);
|
||
code = Tcl_VarEval(interp, entryPtr->scrollCmd, args, (char *) NULL);
|
||
if (code != TCL_OK) {
|
||
Tcl_AddErrorInfo(interp,
|
||
"\n (horizontal scrolling command executed by entry)");
|
||
Tcl_BackgroundError(interp);
|
||
}
|
||
Tcl_SetResult(interp, (char *) NULL, TCL_STATIC);
|
||
Tcl_Release((ClientData) interp);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* EntryBlinkProc --
|
||
*
|
||
* This procedure is called as a timer handler to blink the
|
||
* insertion cursor off and on.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* The cursor gets turned on or off, redisplay gets invoked,
|
||
* and this procedure reschedules itself.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
EntryBlinkProc(clientData)
|
||
ClientData clientData; /* Pointer to record describing entry. */
|
||
{
|
||
register Entry *entryPtr = (Entry *) clientData;
|
||
|
||
if (!(entryPtr->flags & GOT_FOCUS) || (entryPtr->insertOffTime == 0)) {
|
||
return;
|
||
}
|
||
if (entryPtr->flags & CURSOR_ON) {
|
||
entryPtr->flags &= ~CURSOR_ON;
|
||
entryPtr->insertBlinkHandler = Tcl_CreateTimerHandler(
|
||
entryPtr->insertOffTime, EntryBlinkProc, (ClientData) entryPtr);
|
||
} else {
|
||
entryPtr->flags |= CURSOR_ON;
|
||
entryPtr->insertBlinkHandler = Tcl_CreateTimerHandler(
|
||
entryPtr->insertOnTime, EntryBlinkProc, (ClientData) entryPtr);
|
||
}
|
||
EventuallyRedraw(entryPtr);
|
||
}
|
||
|
||
/*
|
||
*----------------------------------------------------------------------
|
||
*
|
||
* EntryFocusProc --
|
||
*
|
||
* This procedure is called whenever the entry gets or loses the
|
||
* input focus. It's also called whenever the window is reconfigured
|
||
* while it has the focus.
|
||
*
|
||
* Results:
|
||
* None.
|
||
*
|
||
* Side effects:
|
||
* The cursor gets turned on or off.
|
||
*
|
||
*----------------------------------------------------------------------
|
||
*/
|
||
|
||
static void
|
||
EntryFocusProc(entryPtr, gotFocus)
|
||
register Entry *entryPtr; /* Entry that got or lost focus. */
|
||
int gotFocus; /* 1 means window is getting focus, 0 means
|
||
* it's losing it. */
|
||
{
|
||
Tcl_DeleteTimerHandler(entryPtr->insertBlinkHandler);
|
||
if (gotFocus) {
|
||
entryPtr->flags |= GOT_FOCUS | CURSOR_ON;
|
||
if (entryPtr->insertOffTime != 0) {
|
||
entryPtr->insertBlinkHandler = Tcl_CreateTimerHandler(
|
||
entryPtr->insertOnTime, EntryBlinkProc,
|
||
(ClientData) entryPtr);
|
||
}
|
||
} else {
|
||
entryPtr->flags &= ~(GOT_FOCUS | CURSOR_ON);
|
||
entryPtr->insertBlinkHandler = (Tcl_TimerToken) NULL;
|
||
}
|
||
EventuallyRedraw(entryPtr);
|
||
}
|
||
|
||
/*
|
||
*--------------------------------------------------------------
|
||
*
|
||
* EntryTextVarProc --
|
||
*
|
||
* This procedure is invoked when someone changes the variable
|
||
* whose contents are to be displayed in an entry.
|
||
*
|
||
* Results:
|
||
* NULL is always returned.
|
||
*
|
||
* Side effects:
|
||
* The text displayed in the entry will change to match the
|
||
* variable.
|
||
*
|
||
*--------------------------------------------------------------
|
||
*/
|
||
|
||
/* ARGSUSED */
|
||
static char *
|
||
EntryTextVarProc(clientData, interp, name1, name2, flags)
|
||
ClientData clientData; /* Information about button. */
|
||
Tcl_Interp *interp; /* Interpreter containing variable. */
|
||
char *name1; /* Not used. */
|
||
char *name2; /* Not used. */
|
||
int flags; /* Information about what happened. */
|
||
{
|
||
register Entry *entryPtr = (Entry *) clientData;
|
||
char *value;
|
||
|
||
/*
|
||
* If the variable is unset, then immediately recreate it unless
|
||
* the whole interpreter is going away.
|
||
*/
|
||
|
||
if (flags & TCL_TRACE_UNSETS) {
|
||
if ((flags & TCL_TRACE_DESTROYED) && !(flags & TCL_INTERP_DESTROYED)) {
|
||
Tcl_SetVar(interp, entryPtr->textVarName, entryPtr->string,
|
||
TCL_GLOBAL_ONLY);
|
||
Tcl_TraceVar(interp, entryPtr->textVarName,
|
||
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
|
||
EntryTextVarProc, clientData);
|
||
}
|
||
return (char *) NULL;
|
||
}
|
||
|
||
/*
|
||
* Update the entry's text with the value of the variable, unless
|
||
* the entry already has that value (this happens when the variable
|
||
* changes value because we changed it because someone typed in
|
||
* the entry).
|
||
*/
|
||
|
||
value = Tcl_GetVar(interp, entryPtr->textVarName, TCL_GLOBAL_ONLY);
|
||
if (value == NULL) {
|
||
value = "";
|
||
}
|
||
if (strcmp(value, entryPtr->string) != 0) {
|
||
EntrySetValue(entryPtr, value);
|
||
}
|
||
return (char *) NULL;
|
||
}
|