/* 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) 1985-2002, 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 static status statusLabel(Label lb, Name stat); static status selectionLabel(Label lb, Any selection); static status initialiseLabel(Label lb, Name name, Any selection, FontObj font) { if ( isDefault(name) ) name = NAME_reporter; if ( isDefault(selection) ) selection = NAME_; createDialogItem(lb, name); if ( notDefault(font) ) assign(lb, font, font); selectionLabel(lb, selection); assign(lb, width, DEFAULT); assign(lb, wrap, NAME_extend); return requestComputeGraphical(lb, DEFAULT); } static status RedrawAreaLabel(Label lb, Area a) { int x, y, w, h; Elevation z = lb->elevation; int preview = (lb->status == NAME_preview && notNil(lb->message)); initialiseDeviceGraphical(lb, &x, &y, &w, &h); if ( notNil(z) ) r_3d_box(x, y, w, h, 0, z, !preview); x += valInt(lb->border); y += valInt(lb->border); w -= 2*valInt(lb->border); h -= 2*valInt(lb->border); if ( lb->wrap == NAME_clip ) d_clip(x, y, w, h); if ( instanceOfObject(lb->selection, ClassCharArray) ) { PceString s = &((CharArray)lb->selection)->data; if ( notNil(z) ) x += valInt(getExFont(lb->font))/2; if ( lb->wrap == NAME_clip ) { LocalString(buf, s->s_iswide, s->s_size+1); str_one_line(buf, s); str_label(buf, 0, lb->font, x, y, w, h, NAME_left, NAME_top, lb->active == ON ? 0 : LABEL_INACTIVE); } else { str_label(s, 0, lb->font, x, y, w, h, NAME_left, NAME_top, lb->active == ON ? 0 : LABEL_INACTIVE); } } else /*if ( instanceOfObject(lb->selection, ClassImage) )*/ { Image image = (Image) lb->selection; r_image(image, 0, 0, x, y, w, h, ON); } if ( lb->wrap == NAME_clip ) d_clip_done(); if ( preview && isNil(z) ) r_complement(x, y, w, h); return RedrawAreaGraphical(lb, a); } static status eventLabel(Label lb, EventObj ev) { if ( eventDialogItem(lb, ev) ) succeed; if ( notNil(lb->message) && lb->active == ON ) { makeButtonGesture(); return eventGesture(GESTURE_button, ev); } fail; } static status executeLabel(Label lb) { if ( notNil(lb->message) && notDefault(lb->message) ) { statusLabel(lb, NAME_execute); flushGraphical(lb); forwardReceiverCode(lb->message, lb, EAV); if ( !isFreedObj(lb) ) { statusLabel(lb, NAME_inactive); flushGraphical(lb); } } succeed; } static status statusLabel(Label lb, Name stat) { if ( stat != lb->status ) { Name oldstat = lb->status; assign(lb, status, stat); if ( oldstat == NAME_preview || stat == NAME_preview ) changedDialogItem(lb); } succeed; } static status computeLabel(Label lb) { if ( notNil(lb->request_compute) ) { int w, h, b; TRY(obtainClassVariablesObject(lb)); b = valInt(lb->border); if ( notNil(lb->elevation) ) b += abs((int)valInt(lb->elevation->height)); if ( instanceOfObject(lb->selection, ClassCharArray) ) { PceString s = &((CharArray)lb->selection)->data; int minw; int ex = valInt(getExFont(lb->font)); if ( lb->wrap == NAME_clip ) { LocalString(buf, s->s_iswide, s->s_size+1); str_one_line(buf, s); str_size(buf, lb->font, &w, &h); } else { str_size(s, lb->font, &w, &h); } w += ex; if ( notDefault(lb->width) ) minw = valInt(lb->width) - 2*b; else minw = (valInt(lb->length)+1) * ex; w = max(w, minw); } else /*if ( instanceOfObject(lb->selection, ClassImage) )*/ { Image image = (Image) lb->selection; w = valInt(image->size->w); h = valInt(image->size->h); } w += 2*b; h += 2*b; CHANGING_GRAPHICAL(lb, assign(lb->area, w, toInt(w)); assign(lb->area, h, toInt(h)); changedEntireImageGraphical(lb)); assign(lb, request_compute, NIL); } succeed; } static Point getReferenceLabel(Label lb) { Point ref; if ( !(ref = getReferenceDialogItem(lb)) ) { if ( instanceOfObject(lb->selection, ClassCharArray) ) ref = answerObject(ClassPoint, ZERO, getAscentFont(lb->font), EAV); else ref = answerObject(ClassPoint, ZERO, ((Image) lb->selection)->size->h, EAV); } answer(ref); } /******************************** * ATTRIBUTES * ********************************/ static status selectionLabel(Label lb, Any selection) { if ( lb->selection != selection ) { assign(lb, selection, selection); requestComputeGraphical(lb, DEFAULT); } succeed; } static status clearLabel(Label lb) { return selectionLabel(lb, NAME_); } static status formatLabel(Label lb, CharArray fm, int argc, Any *argv) { ArgVector(av, argc+1); int ac; StringObj str; av[0] = fm; for(ac=1; ac <= argc; ac++) av[ac] = argv[ac-1]; TRY(str = newObjectv(ClassString, ac, av)); return selectionLabel(lb, str); } static status fontLabel(Label lb, FontObj font) { if ( lb->font != font ) { assign(lb, font, font); requestComputeGraphical(lb, DEFAULT); } succeed; } static status wrapLabel(Label lb, Name wrap) { return assignGraphical(lb, NAME_wrap, wrap); } static status lengthLabel(Label lb, Int length) { return assignGraphical(lb, NAME_length, length); } static status widthLabel(Label lb, Int w) { return assignGraphical(lb, NAME_width, w); } static status geometryLabel(Label lb, Int x, Int y, Int w, Int h) { if ( notDefault(w) && valInt(w) > 0 ) assign(lb, width, w); return geometryGraphical(lb, x, y, w, h); } static status borderLabel(Label lb, Int border) { return assignGraphical(lb, NAME_border, border); } static status elevationLabel(Label lb, Elevation e) { return assignGraphical(lb, NAME_elevation, e); } static status catchAllLabelv(Label lb, Name selector, int argc, Any *argv) { if ( hasSendMethodObject(lb->selection, selector) ) { status rval = sendv(lb->selection, selector, argc, argv); if ( rval ) requestComputeGraphical(lb, DEFAULT); return rval; } else if ( instanceOfObject(lb->selection, ClassCharArray) && getSendMethodClass(ClassString, selector) ) { status rval; assign(lb, selection, newObject(ClassString, name_procent_s, lb->selection, EAV)); if ( (rval = sendv(lb->selection, selector, argc, argv)) ) requestComputeGraphical(lb, DEFAULT); return rval; } return errorPce(lb, NAME_noBehaviour, CtoName("->"), selector); } static status reportLabel(Label lb, Name kind, CharArray fmt, int argc, Any *argv) { if ( isDefault(fmt) ) fmt = (CharArray) (kind == NAME_done ? NAME_done : CtoName("")); if ( kind == NAME_done ) { if ( instanceOfObject(lb->selection, ClassCharArray) ) { CharArray t1 = getEnsureSuffixCharArray(lb->selection, (CharArray) CtoName(" ")); StringObj str; ArgVector(av, argc+1); int ac; av[0] = fmt; for(ac=1; ac <= argc; ac++) av[ac] = argv[ac-1]; TRY(str = newObjectv(ClassString, ac, av)); t1 = getAppendCharArray(t1, (CharArray) str); doneObject(str); selectionLabel(lb, t1); doneObject(t1); } else TRY(formatLabel(lb, fmt, argc, argv)); flushGraphical(lb); } else { TRY(formatLabel(lb, fmt, argc, argv)); if ( kind == NAME_error || kind == NAME_warning ) alertReporteeVisual((VisualObj) lb); else if ( kind == NAME_progress ) flushGraphical(lb); } succeed; } /******************************* * CLASS DECLARATION * *******************************/ /* Type declarations */ static char *T_initialise[] = { "name=[name]", "selection=[string|image]", "font=[font]" }; static char *T_format[] = { "name", "any ..." }; static char *T_catchAll[] = { "name", "unchecked ..." }; static char *T_geometry[] = { "x=[int]", "y=[int]", "width=[int]", "height=[int]" }; /* Instance Variables */ static vardecl var_label[] = { SV(NAME_font, "font", IV_GET|IV_STORE, fontLabel, NAME_appearance, "Font for selection"), SV(NAME_wrap, "{extend,clip}", IV_GET|IV_STORE, wrapLabel, NAME_appearance, "How to handle long text"), SV(NAME_length, "0..", IV_GET|IV_STORE, lengthLabel, NAME_area, "Length in characters (with text)"), SV(NAME_width, "[0..]", IV_NONE|IV_STORE, widthLabel, NAME_area, "Width in pixels"), SV(NAME_selection, "char_array|image", IV_GET|IV_STORE, selectionLabel, NAME_selection, "Text or image displayed"), SV(NAME_border, "0..", IV_GET|IV_STORE, borderLabel, NAME_appearance, "Space around the image"), SV(NAME_elevation, "elevation*", IV_GET|IV_STORE, elevationLabel, NAME_appearance, "3D-Elevation of the area") }; /* Send Methods */ static senddecl send_label[] = { SM(NAME_compute, 0, NULL, computeLabel, DEFAULT, "Recompute layout"), SM(NAME_status, 1, "{inactive,active,preview,execute}", statusLabel, DEFAULT, "Status for event-processing"), SM(NAME_event, 1, "event", eventLabel, DEFAULT, "Act as button if <-message not @nil"), SM(NAME_initialise, 3, T_initialise, initialiseLabel, DEFAULT, "Create from name, selection and font"), SM(NAME_geometry, 4, T_geometry, geometryLabel, DEFAULT, "Resize, sets ->width if not @default"), SM(NAME_catchAll, 2, T_catchAll, catchAllLabelv, NAME_delegate, "Delegate to <->selection"), SM(NAME_execute, 0, NULL, executeLabel, NAME_execute, "Execute associated message"), SM(NAME_format, 2, T_format, formatLabel, NAME_format, "Create string from format and make it the selection"), SM(NAME_report, 3, T_report, reportLabel, NAME_report, "Report message"), SM(NAME_clear, 0, NULL, clearLabel, NAME_selection, "Equivalent to ->selection: ''") }; /* Get Methods */ static getdecl get_label[] = { GM(NAME_reference, 0, "point", NULL, getReferenceLabel, DEFAULT, "Baseline or bottom (image)") }; /* Resources */ static classvardecl rc_label[] = { RC(NAME_border, "0..", "1", "Space around image/string"), RC(NAME_font, "font", "normal", "Default font for selection"), RC(NAME_length, "int", "25", "Default length in characters"), RC(NAME_elevation, RC_REFINE, "@nil", NULL) }; /* Class Declaration */ static Name label_termnames[] = { NAME_name, NAME_selection, NAME_font }; ClassDecl(label_decls, var_label, send_label, get_label, rc_label, 3, label_termnames, "$Rev$"); status makeClassLabel(Class class) { declareClass(class, &label_decls); setRedrawFunctionClass(class, RedrawAreaLabel); succeed; }