2 * Copyright (c) 2003, Joe English
3 * Helper routines for widget implementations.
10 * State flags for 'flags' field.
12 #define WIDGET_DESTROYED 0x0001
13 #define REDISPLAY_PENDING 0x0002 /* scheduled call to RedisplayWidget */
14 #define CURSOR_ON 0x0020 /* See TtkBlinkCursor() */
15 #define WIDGET_USER_FLAG 0x0100 /* 0x0100 - 0x8000 for user flags */
18 * Bit fields for OptionSpec 'mask' field:
20 #define READONLY_OPTION 0x1
21 #define STYLE_CHANGED 0x2
22 #define GEOMETRY_CHANGED 0x4
25 * Core widget elements
27 typedef struct WidgetSpec_ WidgetSpec; /* Forward */
31 Tk_Window tkwin; /* Window associated with widget */
32 Tcl_Interp *interp; /* Interpreter associated with widget. */
33 WidgetSpec *widgetSpec; /* Widget class hooks */
34 Tcl_Command widgetCmd; /* Token for widget command. */
35 Tk_OptionTable optionTable; /* Option table */
36 Ttk_Layout layout; /* Widget layout */
39 * Storage for resources:
41 Tcl_Obj *takeFocusPtr; /* Storage for -takefocus option */
42 Tcl_Obj *cursorObj; /* Storage for -cursor option */
43 Tcl_Obj *styleObj; /* Name of currently-applied style */
44 Tcl_Obj *classObj; /* Class name (readonly option) */
46 Ttk_State state; /* Current widget state */
47 unsigned int flags; /* internal flags, see above */
52 * Widget specifications:
56 const char *className; /* Widget class name */
57 size_t recordSize; /* #bytes in widget record */
58 const Tk_OptionSpec *optionSpecs; /* Option specifications */
59 const Ttk_Ensemble *commands; /* Widget instance subcommands */
64 void (*initializeProc)(Tcl_Interp *, void *recordPtr);
65 void (*cleanupProc)(void *recordPtr);
66 int (*configureProc)(Tcl_Interp *, void *recordPtr, int flags);
67 int (*postConfigureProc)(Tcl_Interp *, void *recordPtr, int flags);
68 Ttk_Layout (*getLayoutProc)(Tcl_Interp *,Ttk_Theme, void *recordPtr);
69 int (*sizeProc)(void *recordPtr, int *widthPtr, int *heightPtr);
70 void (*layoutProc)(void *recordPtr);
71 void (*displayProc)(void *recordPtr, Drawable d);
75 * Common factors for widget implementations:
77 MODULE_SCOPE void TtkNullInitialize(Tcl_Interp *, void *);
78 MODULE_SCOPE int TtkNullPostConfigure(Tcl_Interp *, void *, int);
79 MODULE_SCOPE void TtkNullCleanup(void *recordPtr);
80 MODULE_SCOPE Ttk_Layout TtkWidgetGetLayout(
81 Tcl_Interp *, Ttk_Theme, void *recordPtr);
82 MODULE_SCOPE Ttk_Layout TtkWidgetGetOrientedLayout(
83 Tcl_Interp *, Ttk_Theme, void *recordPtr, Tcl_Obj *orientObj);
84 MODULE_SCOPE int TtkWidgetSize(void *recordPtr, int *w, int *h);
85 MODULE_SCOPE void TtkWidgetDoLayout(void *recordPtr);
86 MODULE_SCOPE void TtkWidgetDisplay(void *recordPtr, Drawable);
88 MODULE_SCOPE int TtkCoreConfigure(Tcl_Interp*, void *, int mask);
90 /* Common widget commands:
92 MODULE_SCOPE int TtkWidgetConfigureCommand(
93 void *,Tcl_Interp *, int, Tcl_Obj*const[]);
94 MODULE_SCOPE int TtkWidgetCgetCommand(
95 void *,Tcl_Interp *, int, Tcl_Obj*const[]);
96 MODULE_SCOPE int TtkWidgetInstateCommand(
97 void *,Tcl_Interp *, int, Tcl_Obj*const[]);
98 MODULE_SCOPE int TtkWidgetStateCommand(
99 void *,Tcl_Interp *, int, Tcl_Obj*const[]);
100 MODULE_SCOPE int TtkWidgetIdentifyCommand(
101 void *,Tcl_Interp *, int, Tcl_Obj*const[]);
103 /* Widget constructor:
105 MODULE_SCOPE int TtkWidgetConstructorObjCmd(
106 ClientData, Tcl_Interp*, int, Tcl_Obj*const[]);
108 #define RegisterWidget(interp, name, specPtr) \
109 Tcl_CreateObjCommand(interp, name, \
110 TtkWidgetConstructorObjCmd, (ClientData)specPtr,NULL)
112 /* WIDGET_TAKEFOCUS_TRUE --
113 * WIDGET_TAKEFOCUS_FALSE --
114 * Add one or the other of these to each OptionSpecs table
115 * to indicate whether the widget should take focus
116 * during keyboard traversal.
118 #define WIDGET_TAKEFOCUS_TRUE \
119 {TK_OPTION_STRING, "-takefocus", "takeFocus", "TakeFocus", \
120 "ttk::takefocus", Tk_Offset(WidgetCore, takeFocusPtr), -1, 0,0,0 }
121 #define WIDGET_TAKEFOCUS_FALSE \
122 {TK_OPTION_STRING, "-takefocus", "takeFocus", "TakeFocus", \
123 "", Tk_Offset(WidgetCore, takeFocusPtr), -1, 0,0,0 }
125 /* WIDGET_INHERIT_OPTIONS(baseOptionSpecs) --
126 * Add this at the end of an OptionSpecs table to inherit
127 * the options from 'baseOptionSpecs'.
129 #define WIDGET_INHERIT_OPTIONS(baseOptionSpecs) \
130 {TK_OPTION_END, 0,0,0, NULL, -1,-1, 0, (ClientData)baseOptionSpecs, 0}
132 /* All widgets should inherit from ttkCoreOptionSpecs[].
134 MODULE_SCOPE Tk_OptionSpec ttkCoreOptionSpecs[];
137 * Useful routines for use inside widget implementations:
139 /* extern int WidgetDestroyed(WidgetCore *); */
140 #define WidgetDestroyed(corePtr) ((corePtr)->flags & WIDGET_DESTROYED)
142 MODULE_SCOPE void TtkWidgetChangeState(WidgetCore *,
143 unsigned int setBits, unsigned int clearBits);
145 MODULE_SCOPE void TtkRedisplayWidget(WidgetCore *);
146 MODULE_SCOPE void TtkResizeWidget(WidgetCore *);
148 MODULE_SCOPE void TtkTrackElementState(WidgetCore *);
149 MODULE_SCOPE void TtkBlinkCursor(WidgetCore *);
152 * -state option values (compatibility)
154 MODULE_SCOPE void TtkCheckStateOption(WidgetCore *, Tcl_Obj *);
159 typedef void (*Ttk_TraceProc)(void *recordPtr, const char *value);
160 typedef struct TtkTraceHandle_ Ttk_TraceHandle;
162 MODULE_SCOPE Ttk_TraceHandle *Ttk_TraceVariable(
163 Tcl_Interp*, Tcl_Obj *varnameObj, Ttk_TraceProc callback, void *clientData);
164 MODULE_SCOPE void Ttk_UntraceVariable(Ttk_TraceHandle *);
165 MODULE_SCOPE int Ttk_FireTrace(Ttk_TraceHandle *);
170 MODULE_SCOPE void TtkSendVirtualEvent(Tk_Window tgtWin, const char *eventName);
173 * Helper routines for data accessor commands:
175 MODULE_SCOPE int TtkEnumerateOptions(
176 Tcl_Interp *, void *, const Tk_OptionSpec *, Tk_OptionTable, Tk_Window);
177 MODULE_SCOPE int TtkGetOptionValue(
178 Tcl_Interp *, void *, Tcl_Obj *optName, Tk_OptionTable, Tk_Window);
181 * Helper routines for scrolling widgets (see scroll.c).
184 int first; /* First visible item */
185 int last; /* Last visible item */
186 int total; /* Total #items */
187 char *scrollCmd; /* Widget option */
190 typedef struct ScrollHandleRec *ScrollHandle;
192 MODULE_SCOPE ScrollHandle TtkCreateScrollHandle(WidgetCore *, Scrollable *);
193 MODULE_SCOPE void TtkFreeScrollHandle(ScrollHandle);
195 MODULE_SCOPE int TtkScrollviewCommand(
196 Tcl_Interp *interp, int objc, Tcl_Obj *const objv[], ScrollHandle);
198 MODULE_SCOPE void TtkUpdateScrollInfo(ScrollHandle h);
199 MODULE_SCOPE void TtkScrollTo(ScrollHandle, int newFirst, int updateScrollInfo);
200 MODULE_SCOPE void TtkScrolled(ScrollHandle, int first, int last, int total);
201 MODULE_SCOPE void TtkScrollbarUpdateRequired(ScrollHandle);
204 * Tag sets (work in progress, half-baked)
207 typedef struct TtkTag *Ttk_Tag;
208 typedef struct TtkTagTable *Ttk_TagTable;
209 typedef struct TtkTagSet { /* TODO: make opaque */
214 MODULE_SCOPE Ttk_TagTable Ttk_CreateTagTable(
215 Tcl_Interp *, Tk_Window tkwin, Tk_OptionSpec[], int recordSize);
216 MODULE_SCOPE void Ttk_DeleteTagTable(Ttk_TagTable);
218 MODULE_SCOPE Ttk_Tag Ttk_GetTag(Ttk_TagTable, const char *tagName);
219 MODULE_SCOPE Ttk_Tag Ttk_GetTagFromObj(Ttk_TagTable, Tcl_Obj *);
221 MODULE_SCOPE Tcl_Obj *Ttk_TagOptionValue(
222 Tcl_Interp *, Ttk_TagTable, Ttk_Tag, Tcl_Obj *optionName);
224 MODULE_SCOPE int Ttk_EnumerateTagOptions(
225 Tcl_Interp *, Ttk_TagTable, Ttk_Tag);
227 MODULE_SCOPE int Ttk_EnumerateTags(Tcl_Interp *, Ttk_TagTable);
229 MODULE_SCOPE int Ttk_ConfigureTag(
230 Tcl_Interp *interp, Ttk_TagTable tagTable, Ttk_Tag tag,
231 int objc, Tcl_Obj *const objv[]);
233 MODULE_SCOPE Ttk_TagSet Ttk_GetTagSetFromObj(
234 Tcl_Interp *interp, Ttk_TagTable, Tcl_Obj *objPtr);
235 MODULE_SCOPE Tcl_Obj *Ttk_NewTagSetObj(Ttk_TagSet);
237 MODULE_SCOPE void Ttk_FreeTagSet(Ttk_TagSet);
239 MODULE_SCOPE int Ttk_TagSetContains(Ttk_TagSet, Ttk_Tag tag);
240 MODULE_SCOPE int Ttk_TagSetAdd(Ttk_TagSet, Ttk_Tag tag);
241 MODULE_SCOPE int Ttk_TagSetRemove(Ttk_TagSet, Ttk_Tag tag);
243 MODULE_SCOPE void Ttk_TagSetValues(Ttk_TagTable, Ttk_TagSet, void *record);
244 MODULE_SCOPE void Ttk_TagSetApplyStyle(Ttk_TagTable,Ttk_Style,Ttk_State,void*);
247 * String tables for widget resource specifications:
250 MODULE_SCOPE const char *ttkOrientStrings[];
251 MODULE_SCOPE const char *ttkCompoundStrings[];
252 MODULE_SCOPE const char *ttkDefaultStrings[];
255 * ... other option types...
257 MODULE_SCOPE int TtkGetLabelAnchorFromObj(
258 Tcl_Interp*, Tcl_Obj*, Ttk_PositionSpec *);
261 * Platform-specific initialization.
265 #define Ttk_PlatformInit Ttk_WinPlatformInit
266 MODULE_SCOPE int Ttk_PlatformInit(Tcl_Interp *);
267 #elif defined(MAC_OSX_TK)
268 #define Ttk_PlatformInit Ttk_MacOSXPlatformInit
269 MODULE_SCOPE int Ttk_PlatformInit(Tcl_Interp *);
271 #define Ttk_PlatformInit(interp) /* TTK_X11PlatformInit() */
274 #endif /* _TTKWIDGET */