/* Ttk_GetStateMapFromObj --
* Returns a Ttk_StateMap from a Tcl_Obj*.
* Since a Ttk_StateMap is just a specially-formatted Tcl_Obj,
* this basically just checks for errors.
*/
Ttk_StateMap Ttk_GetStateMapFromObj(
Tcl_Interp *interp, /* Where to leave error messages; may be NULL */
Tcl_Obj *mapObj) /* State map */
{
Tcl_Obj **specs;
int nSpecs;
int j, status;
status = Tcl_ListObjGetElements(interp, mapObj, &nSpecs, &specs);
if (status != TCL_OK)
return NULL;
if (nSpecs % 2 != 0) {
if (interp)
Tcl_SetResult(interp,
"State map must have an even number of elements",
TCL_STATIC);
return 0;
}
for (j = 0; j < nSpecs; j += 2) {
Ttk_StateSpec spec;
if (Ttk_GetStateSpecFromObj(interp, specs[j], &spec) != TCL_OK)
return NULL;
}
return mapObj;
}
/*
* Tk_StateMapLookup --
*
* A state map is a paired list of StateSpec / value pairs.
* Returns the value corresponding to the first matching state
* specification, or NULL if not found or an error occurs.
*/
Tcl_Obj *Ttk_StateMapLookup(
Tcl_Interp *interp, /* Where to leave error messages; may be NULL */
Ttk_StateMap map, /* State map */
Ttk_State state) /* State to look up */
{
Tcl_Obj **specs;
int nSpecs;
int j, status;
status = Tcl_ListObjGetElements(interp, map, &nSpecs, &specs);
if (status != TCL_OK)
return NULL;
for (j = 0; j < nSpecs; j += 2) {
Ttk_StateSpec spec;
status = Ttk_GetStateSpecFromObj(interp, specs[j], &spec);
if (status != TCL_OK)
return NULL;
if (Ttk_StateMatches(state, &spec))
return specs[j+1];
}
if (interp) {
Tcl_ResetResult(interp);
Tcl_AppendResult(interp, "No match in state map", NULL);
}
return NULL;
}
/* Ttk_GetStateMapFromObj --
* Returns a Ttk_StateMap from a Tcl_Obj*.
* Since a Ttk_StateMap is just a specially-formatted Tcl_Obj,
* this basically just checks for errors.
*/
Ttk_StateMap Ttk_GetStateMapFromObj(
Tcl_Interp *interp, /* Where to leave error messages; may be NULL */
Tcl_Obj *mapObj) /* State map */
{
Tcl_Obj **specs;
int nSpecs;
int j, status;
status = Tcl_ListObjGetElements(interp, mapObj, &nSpecs, &specs);
if (status != TCL_OK)
return NULL;
if (nSpecs % 2 != 0) {
if (interp) {
Tcl_SetObjResult(interp, Tcl_NewStringObj(
"State map must have an even number of elements", -1));
Tcl_SetErrorCode(interp, "TTK", "VALUE", "STATEMAP", NULL);
}
return 0;
}
for (j = 0; j < nSpecs; j += 2) {
Ttk_StateSpec spec;
if (Ttk_GetStateSpecFromObj(interp, specs[j], &spec) != TCL_OK)
return NULL;
}
return mapObj;
}
/*
* Tk_StateMapLookup --
*
* A state map is a paired list of StateSpec / value pairs.
* Returns the value corresponding to the first matching state
* specification, or NULL if not found or an error occurs.
*/
Tcl_Obj *Ttk_StateMapLookup(
Tcl_Interp *interp, /* Where to leave error messages; may be NULL */
Ttk_StateMap map, /* State map */
Ttk_State state) /* State to look up */
{
Tcl_Obj **specs;
int nSpecs;
int j, status;
status = Tcl_ListObjGetElements(interp, map, &nSpecs, &specs);
if (status != TCL_OK)
return NULL;
for (j = 0; j < nSpecs; j += 2) {
Ttk_StateSpec spec;
status = Ttk_GetStateSpecFromObj(interp, specs[j], &spec);
if (status != TCL_OK)
return NULL;
if (Ttk_StateMatches(state, &spec))
return specs[j+1];
}
if (interp) {
Tcl_SetObjResult(interp, Tcl_NewStringObj("No match in state map", -1));
Tcl_SetErrorCode(interp, "TTK", "STATE", "UNMATCHED", NULL);
}
return NULL;
}
/* + style lookup $style -option ?statespec? ?defaultValue?
*/
static int StyleLookupCmd(
ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[])
{
StylePackageData *pkgPtr = clientData;
Ttk_Theme theme = pkgPtr->currentTheme;
Ttk_Style style = NULL;
const char *optionName;
Ttk_State state = 0ul;
Tcl_Obj *result;
if (objc < 4 || objc > 6) {
Tcl_WrongNumArgs(interp, 2, objv, "style -option ?state? ?default?");
return TCL_ERROR;
}
style = Ttk_GetStyle(theme, Tcl_GetString(objv[2]));
if (!style) {
return TCL_ERROR;
}
optionName = Tcl_GetString(objv[3]);
if (objc >= 5) {
Ttk_StateSpec stateSpec;
/* @@@ SB: Ttk_GetStateFromObj(); 'offbits' spec is ignored */
if (Ttk_GetStateSpecFromObj(interp, objv[4], &stateSpec) != TCL_OK) {
return TCL_ERROR;
}
state = stateSpec.onbits;
}
result = Ttk_QueryStyle(style, NULL,NULL, optionName, state);
if (result == NULL && objc >= 6) { /* Use caller-supplied fallback */
result = objv[5];
}
if (result) {
Tcl_SetObjResult(interp, result);
}
return TCL_OK;
}
/* TtkGetImageSpec --
* Constructs a Ttk_ImageSpec * from a Tcl_Obj *.
* Result must be released using TtkFreeImageSpec.
*
* TODO: Need a variant of this that takes a user-specified ImageChanged proc
*/
Ttk_ImageSpec *
TtkGetImageSpec(Tcl_Interp *interp, Tk_Window tkwin, Tcl_Obj *objPtr)
{
Ttk_ImageSpec *imageSpec = 0;
int i = 0, n = 0, objc;
Tcl_Obj **objv;
imageSpec = (Ttk_ImageSpec *)ckalloc(sizeof(*imageSpec));
imageSpec->baseImage = 0;
imageSpec->mapCount = 0;
imageSpec->states = 0;
imageSpec->images = 0;
if (Tcl_ListObjGetElements(interp, objPtr, &objc, &objv) != TCL_OK) {
goto error;
}
if ((objc % 2) != 1) {
if (interp) {
Tcl_SetResult(interp,
"image specification must contain an odd number of elements",
TCL_STATIC);
}
goto error;
}
n = (objc - 1) / 2;
imageSpec->states = (Ttk_StateSpec*)ckalloc(n * sizeof(Ttk_StateSpec));
imageSpec->images = (Tk_Image*)ckalloc(n * sizeof(Tk_Image *));
/* Get base image:
*/
imageSpec->baseImage = Tk_GetImage(
interp, tkwin, Tcl_GetString(objv[0]), NullImageChanged, NULL);
if (!imageSpec->baseImage) {
goto error;
}
/* Extract state and image specifications:
*/
for (i = 0; i < n; ++i) {
Tcl_Obj *stateSpec = objv[2*i + 1];
const char *imageName = Tcl_GetString(objv[2*i + 2]);
Ttk_StateSpec state;
if (Ttk_GetStateSpecFromObj(interp, stateSpec, &state) != TCL_OK) {
goto error;
}
imageSpec->states[i] = state;
imageSpec->images[i] = Tk_GetImage(
interp, tkwin, imageName, NullImageChanged, NULL);
if (imageSpec->images[i] == NULL) {
goto error;
}
imageSpec->mapCount = i+1;
}
return imageSpec;
error:
TtkFreeImageSpec(imageSpec);
return NULL;
}
