EVOLUTION-MANAGER

Edit File: tkScale.h

/* * tkScale.h -- * * Declarations of types and functions used to implement the scale * widget. * * Copyright (c) 1996 by Sun Microsystems, Inc. * Copyright (c) 1999-2000 by Scriptics Corporation. * * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. */ #ifndef _TKSCALE #define _TKSCALE #ifndef _TKINT #include "tkInt.h" #endif #ifdef BUILD_tk # undef TCL_STORAGE_CLASS # define TCL_STORAGE_CLASS DLLEXPORT #endif /* * Legal values for the "orient" field of TkScale records. */ enum orient { ORIENT_HORIZONTAL, ORIENT_VERTICAL }; /* * Legal values for the "state" field of TkScale records. */ enum state { STATE_ACTIVE, STATE_DISABLED, STATE_NORMAL }; /* * A data structure of the following type is kept for each scale widget * managed by this file: */ typedef struct TkScale { Tk_Window tkwin; /* Window that embodies the scale. NULL means * that the window has been destroyed but the * data structures haven't yet been cleaned * up.*/ Display *display; /* Display containing widget. Used, among * other things, so that resources can be * freed even after tkwin has gone away. */ Tcl_Interp *interp; /* Interpreter associated with scale. */ Tcl_Command widgetCmd; /* Token for scale's widget command. */ Tk_OptionTable optionTable; /* Table that defines configuration options * available for this widget. */ enum orient orient; /* Orientation for window (vertical or * horizontal). */ int width; /* Desired narrow dimension of scale, in * pixels. */ int length; /* Desired long dimension of scale, in * pixels. */ double value; /* Current value of scale. */ Tcl_Obj *varNamePtr; /* Name of variable or NULL. If non-NULL, * scale's value tracks the contents of this * variable and vice versa. */ double fromValue; /* Value corresponding to left or top of * scale. */ double toValue; /* Value corresponding to right or bottom of * scale. */ double tickInterval; /* Distance between tick marks; 0 means don't * display any tick marks. */ double resolution; /* If > 0, all values are rounded to an even * multiple of this value. */ int digits; /* Number of significant digits to print in * values. 0 means we get to choose the number * based on resolution and/or the range of the * scale. */ char format[10]; /* Sprintf conversion specifier computed from * digits and other information. */ double bigIncrement; /* Amount to use for large increments to scale * value. (0 means we pick a value). */ char *command; /* Command prefix to use when invoking Tcl * commands because the scale value changed. * NULL means don't invoke commands. */ int repeatDelay; /* How long to wait before auto-repeating on * scrolling actions (in ms). */ int repeatInterval; /* Interval between autorepeats (in ms). */ char *label; /* Label to display above or to right of * scale; NULL means don't display a label. */ int labelLength; /* Number of non-NULL chars. in label. */ enum state state; /* Values are active, normal, or disabled. * Value of scale cannot be changed when * disabled. */ /* * Information used when displaying widget: */ int borderWidth; /* Width of 3-D border around window. */ Tk_3DBorder bgBorder; /* Used for drawing slider and other * background areas. */ Tk_3DBorder activeBorder; /* For drawing the slider when active. */ int sliderRelief; /* Is slider to be drawn raised, sunken, * etc. */ XColor *troughColorPtr; /* Color for drawing trough. */ GC troughGC; /* For drawing trough. */ GC copyGC; /* Used for copying from pixmap onto screen */ Tk_Font tkfont; /* Information about text font, or NULL. */ XColor *textColorPtr; /* Color for drawing text. */ GC textGC; /* GC for drawing text in normal mode. */ int relief; /* Indicates whether window as a whole is * raised, sunken, or flat. */ int highlightWidth; /* Width in pixels of highlight to draw around * widget when it has the focus. <= 0 means * don't draw a highlight. */ Tk_3DBorder highlightBorder;/* Value of -highlightbackground option: * specifies background with which to draw 3-D * default ring and focus highlight area when * highlight is off. */ XColor *highlightColorPtr; /* Color for drawing traversal highlight. */ int inset; /* Total width of all borders, including * traversal highlight and 3-D border. * Indicates how much interior stuff must be * offset from outside edges to leave room for * borders. */ int sliderLength; /* Length of slider, measured in pixels along * long dimension of scale. */ int showValue; /* Non-zero means to display the scale value * below or to the left of the slider; zero * means don't display the value. */ /* * Layout information for horizontal scales, assuming that window gets the * size it requested: */ int horizLabelY; /* Y-coord at which to draw label. */ int horizValueY; /* Y-coord at which to draw value text. */ int horizTroughY; /* Y-coord of top of slider trough. */ int horizTickY; /* Y-coord at which to draw tick text. */ /* * Layout information for vertical scales, assuming that window gets the * size it requested: */ int vertTickRightX; /* X-location of right side of tick-marks. */ int vertValueRightX; /* X-location of right side of value string. */ int vertTroughX; /* X-location of scale's slider trough. */ int vertLabelX; /* X-location of origin of label. */ /* * Miscellaneous information: */ int fontHeight; /* Height of scale font. */ Tk_Cursor cursor; /* Current cursor for window, or None. */ Tcl_Obj *takeFocusPtr; /* Value of -takefocus option; not used in the * C code, but used by keyboard traversal * scripts. May be NULL. */ int flags; /* Various flags; see below for * definitions. */ } TkScale; /* * Flag bits for scales: * * REDRAW_SLIDER - 1 means slider (and numerical readout) need to * be redrawn. * REDRAW_OTHER - 1 means other stuff besides slider and value * need to be redrawn. * REDRAW_ALL - 1 means the entire widget needs to be redrawn. * REDRAW_PENDING - 1 means any sort of redraw is pending * ACTIVE - 1 means the widget is active (the mouse is in * its window). * INVOKE_COMMAND - 1 means the scale's command needs to be * invoked during the next redisplay (the value * of the scale has changed since the last time * the command was invoked). * SETTING_VAR - 1 means that the associated variable is being * set by us, so there's no need for ScaleVarProc * to do anything. * NEVER_SET - 1 means that the scale's value has never been * set before (so must invoke -command and set * associated variable even if the value doesn't * appear to have changed). * GOT_FOCUS - 1 means that the focus is currently in this * widget. * SCALE_DELETED - 1 means the scale widget is being deleted */ #define REDRAW_SLIDER (1<<0) #define REDRAW_OTHER (1<<1) #define REDRAW_ALL (REDRAW_OTHER|REDRAW_SLIDER) #define REDRAW_PENDING (1<<2) #define ACTIVE (1<<3) #define INVOKE_COMMAND (1<<4) #define SETTING_VAR (1<<5) #define NEVER_SET (1<<6) #define GOT_FOCUS (1<<7) #define SCALE_DELETED (1<<8) /* * Symbolic values for the active parts of a slider. These are the values that * may be returned by the ScaleElement procedure. */ #define OTHER 0 #define TROUGH1 1 #define SLIDER 2 #define TROUGH2 3 /* * Space to leave between scale area and text, and between text and edge of * window. */ #define SPACING 2 /* * How many characters of space to provide when formatting the scale's value: */ #define PRINT_CHARS 150 /* * Declaration of procedures used in the implementation of the scale widget. */ MODULE_SCOPE void TkEventuallyRedrawScale(TkScale *scalePtr, int what); MODULE_SCOPE double TkRoundToResolution(TkScale *scalePtr, double value); MODULE_SCOPE TkScale * TkpCreateScale(Tk_Window tkwin); MODULE_SCOPE void TkpDestroyScale(TkScale *scalePtr); MODULE_SCOPE void TkpDisplayScale(ClientData clientData); MODULE_SCOPE int TkpScaleElement(TkScale *scalePtr, int x, int y); MODULE_SCOPE void TkScaleSetValue(TkScale *scalePtr, double value, int setVar, int invokeCommand); MODULE_SCOPE double TkScalePixelToValue(TkScale *scalePtr, int x, int y); MODULE_SCOPE int TkScaleValueToPixel(TkScale *scalePtr, double value); # undef TCL_STORAGE_CLASS # define TCL_STORAGE_CLASS DLLIMPORT #endif /* _TKSCALE */