/* Part of XPCE --- The SWI-Prolog GUI toolkit Author: Jan Wielemaker and Anjo Anjewierden E-mail: jan@swi.psy.uva.nl WWW: http://www.swi.psy.uva.nl/projects/xpce/ Copyright (c) 1997-2011, University of Amsterdam All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include Class ClassIntItem; typedef struct int_item *IntItem; NewClass(int_item) ABSTRACT_TEXTITEM End; static status rangeIntItem(IntItem ii, Int low, Int high); static status initialiseIntItem(IntItem ii, Name name, Int selection, Code msg, Int low, Int high) { Int v0; if ( isDefault(name) ) name = NAME_integer; v0 = isDefault(selection) ? ZERO : selection; initialiseTextItem((TextItem)ii, name, v0, msg); styleTextItem((TextItem)ii, NAME_stepper); rangeIntItem(ii, low, high); if ( isDefault(selection) ) send(ii, NAME_clear, EAV); succeed; } static int width_text(FontObj f, const char *s) { CharArray ctmp = CtoScratchCharArray(s); Int w = getWidthFont(f, ctmp); doneScratchCharArray(ctmp); return(valInt(w)); } static status rangeIntItem(IntItem ii, Int low, Int high) { char buf[48]; Type t = NULL; char s1[24], s2[24]; int b = valInt(getClassVariableValueObject(ii, NAME_border)); obtainClassVariablesObject(ii); if ( isDefault(low) ) { if ( isDefault(high) ) { t = TypeInt; sprintf(s1, "%" PRIdPTR, PCE_MIN_INT); sprintf(s2, "%" PRIdPTR, PCE_MAX_INT); } else { sprintf(s1, "%" PRIdPTR, PCE_MIN_INT); sprintf(s2, "%" PRIdPTR, valInt(high)); sprintf(buf, "..%" PRIdPTR, valInt(high)); } } else { if ( isDefault(high) ) { sprintf(s1, "%" PRIdPTR, valInt(low)); sprintf(s2, "%" PRIdPTR, PCE_MAX_INT); sprintf(buf, "%" PRIdPTR "..", valInt(low)); } else { sprintf(s1, "%" PRIdPTR, valInt(low)); sprintf(s2, "%" PRIdPTR, valInt(high)); sprintf(buf, "%" PRIdPTR ".." "%" PRIdPTR, valInt(low), valInt(high)); } } if ( !t ) t = checkType(CtoName(buf), TypeType, NIL); assign(ii, type, t); assign(ii, hor_stretch, ZERO); valueWidthTextItem((TextItem)ii, toInt(max(width_text(ii->value_font, s1), width_text(ii->value_font, s2)) + 2*b + 5 + + text_item_combo_width((TextItem)ii))); succeed; } static Int getLowIntItem(IntItem ii) { Type t = ii->type; if ( t->kind == NAME_intRange ) { Tuple tup = t->context; if ( isInteger(tup->first) ) answer(tup->first); } answer(toInt(PCE_MIN_INT)); } static Int getHighIntItem(IntItem ii) { Type t = ii->type; if ( t->kind == NAME_intRange ) { Tuple tup = t->context; if ( isInteger(tup->second) ) answer(tup->second); } answer(toInt(PCE_MAX_INT)); } /******************************* * EVENT HANDLING * *******************************/ static status typedIntItem(IntItem ii, EventId id) { CharArray save = getCopyCharArray(ii->value_text->string); status rval = typedTextItem((TextItem)ii, id); if ( rval && !checkType(ii->value_text->string, TypeInt, NIL) && getSizeCharArray(ii->value_text->string) != ZERO ) { displayedValueTextItem((TextItem)ii, save); return errorPce(ii, NAME_cannotConvertText, ii->value_text->string, ii->type); } doneObject(save); return rval; } static status addIntItem(IntItem ii, Int change) { Int ival; long val; char buf[100]; CharArray ctmp; Int low, high; if ( (ival = toInteger(ii->value_text->string)) ) val = valInt(ival); else val = 0; val += valInt(change); if ( (low=getLowIntItem(ii)) ) val = max(val, valInt(low)); if ( (high = getHighIntItem(ii)) ) val = min(val, valInt(high)); sprintf(buf, "%ld", val); ctmp = CtoScratchCharArray(buf); displayedValueTextItem((TextItem)ii, ctmp); doneScratchCharArray(ctmp); applyTextItem((TextItem)ii, OFF); succeed; } static status incrementIntItem(IntItem ii) { return addIntItem(ii, ONE); } static status decrementIntItem(IntItem ii) { return addIntItem(ii, toInt(-1)); } static status typeIntItem(IntItem ii, Type type) { assign(ii, type, type); while(type->kind == NAME_alias) type = type->context; if ( type->kind == NAME_intRange ) { Tuple t = type->context; rangeIntItem(ii, t->first, t->second); } else if ( type->kind == NAME_int ) rangeIntItem(ii, DEFAULT, DEFAULT); succeed; } /******************************* * CLASS DECLARATION * *******************************/ /* Type declarations */ static char *T_initialise[] = { "name=[name]", "default=[function|int]", "message=[code]*", "low=[int]", "high=[int]" }; static char *T_range[] = { "low=[int]", "high=[int]" }; /* Instance Variables */ #define var_int_item NULL /* static vardecl var_int_item[] = { }; */ /* Send Methods */ static senddecl send_int_item[] = { SM(NAME_initialise, 5, T_initialise, initialiseIntItem, DEFAULT, "Create from name, selection and font"), SM(NAME_range, 2, T_range, rangeIntItem, NAME_type, "Allowed range"), SM(NAME_typed, 1, "event_id", typedIntItem, NAME_event, "Process keyboard event"), SM(NAME_increment, 0, NULL, incrementIntItem, NAME_selection, "Increment the selection"), SM(NAME_decrement, 0, NULL, decrementIntItem, NAME_selection, "Decrement the selection"), SM(NAME_type, 1, "type", typeIntItem, NAME_type, "Adjust ->low and ->high") }; /* Get Methods */ #define get_int_item NULL /* static getdecl get_int_item[] = { }; */ /* Resources */ #define rc_int_item NULL /* static classvardecl rc_int_item[] = { }; */ /* Class Declaration */ static Name int_item_termnames[] = { NAME_name, NAME_default, NAME_message }; ClassDecl(int_item_decls, var_int_item, send_int_item, get_int_item, rc_int_item, 3, int_item_termnames, "$Rev$"); status makeClassIntItem(Class class) { return declareClass(class, &int_item_decls); }