/* 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 #include static status fontTextCursor(TextCursor c, FontObj font); static status styleTextCursor(TextCursor c, Name style); static status initialiseTextCursor(TextCursor c, FontObj font) { initialiseGraphical(c, ZERO, ZERO, ZERO, ZERO); if ( notDefault(font) ) return fontTextCursor(c, font); else return styleTextCursor(c, getClassVariableValueObject(c, NAME_style)); } static status RedrawAreaTextCursor(TextCursor c, Area a) { int x, y, w, h; initialiseDeviceGraphical(c, &x, &y, &w, &h); if ( c->style == NAME_arrow ) { int cx = x+w/2; /* TBD: consider r_caret()! */ ipoint pts[3]; r_thickness(1); r_dash(NAME_none); r_line(cx, y, cx, y+h-1); pts[0].x = x; pts[0].y = y+h; pts[1].x = x + w; pts[1].y = y+h; pts[2].x = cx; pts[2].y = y + h - (h+2)/3; r_fillpattern(c->active == ON ? BLACK_IMAGE : GREY50_IMAGE, NAME_foreground); r_fill_polygon(pts, 3); } else if ( c->style == NAME_image ) { r_image(c->image, 0, 0, x, y, w, h, ON); } else if ( c->style == NAME_openLook ) { if ( c->active == ON ) { int cx = x + w/2; Any colour = getDisplayColourGraphical((Graphical)c); r_fillpattern(colour ? colour : (Any) BLACK_IMAGE, NAME_foreground); r_fill_triangle(cx, y, x, y+h, x+w, y+h); } else { ipoint pts[4]; int cx = x + w/2; int cy = y + h/2; int i = 0; pts[i].x = cx; pts[i].y = y; i++; pts[i].x = x; pts[i].y = cy; i++; pts[i].x = cx; pts[i].y = y+h; i++; pts[i].x = x+w; pts[i].y = cy; i++; r_fillpattern(GREY50_IMAGE, NAME_foreground); r_fill_polygon(pts, i); } } else /*if ( c->style == NAME_block )*/ { if ( c->active == ON ) r_complement(x, y, w, h); else r_box(x, y, w, h, 0, NIL); } succeed; } static status fontTextCursor(TextCursor c, FontObj font) { Int h = getHeightFont(font); Int w = getExFont(font); Name style = getClassVariableValueObject(c, getFixedWidthFont(font) == ON ? NAME_fixedFontStyle : NAME_proportionalFontStyle); geometryGraphical(c, DEFAULT, DEFAULT, w, h); if ( style ) return styleTextCursor(c, style); fail; } /* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Set the text_cursor; (x,y) is the top-right corner of the character after which the insertion point is. h is the height of the line, y+b is the baseline of the line. w is the width of the font of the character. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */ #define OL_CURSOR_SIZE 9 status setTextCursor(TextCursor c, Int x, Int y, Int w, Int h, Int b) { if ( c->style == NAME_arrow ) return geometryGraphical(c, dif(x, w), y, w, h); if ( c->style == NAME_image ) return geometryGraphical(c, sub(x, c->hot_spot->x), sub(add(y, b), c->hot_spot->y), c->image->size->w, c->image->size->h); if ( c->style == NAME_openLook ) return geometryGraphical(c, sub(x, toInt(OL_CURSOR_SIZE/2)), sub(add(y, b), ONE), toInt(OL_CURSOR_SIZE), toInt(OL_CURSOR_SIZE)); return geometryGraphical(c, x, y, w, h); } /******************************** * ATTRIBUTES * ********************************/ static status styleTextCursor(TextCursor c, Name style) { Int w = DEFAULT; Int h = DEFAULT; if ( style == NAME_image && (isNil(c->image) || isNil(c->hot_spot)) ) return errorPce(c, NAME_needImageAndHotSpot); if ( style == NAME_openLook ) w = h = toInt(OL_CURSOR_SIZE); CHANGING_GRAPHICAL(c, geometryGraphical(c, DEFAULT, DEFAULT, w, h); assign(c, style, style); changedEntireImageGraphical(c)); succeed; } static status imageTextCursor(TextCursor c, Image image, Point hot) { CHANGING_GRAPHICAL(c, assign(c, image, image); assign(c, hot_spot, hot); assign(c, style, NAME_image); changedEntireImageGraphical(c)); succeed; } /******************************* * CLASS DECLARATION * *******************************/ /* Type declarations */ static char *T_set[] = { "x=int", "y=int", "width=int", "height=int", "baseline=int" }; /* Instance Variables */ static vardecl var_textCursor[] = { SV(NAME_style, "{arrow,image,block,open_look}", IV_GET|IV_STORE, styleTextCursor, NAME_appearance, "How the text_cursor object is visualised"), SV(NAME_image, "image*", IV_GET|IV_STORE, imageTextCursor, NAME_appearance, "Image when <->style is image"), IV(NAME_hotSpot, "point*", IV_GET, NAME_appearance, "The `hot-spot' of the image") }; /* Send Methods */ static senddecl send_textCursor[] = { SM(NAME_initialise, 1, "for=[font]", initialiseTextCursor, DEFAULT, "Create for specified font"), SM(NAME_font, 1, "font", fontTextCursor, NAME_appearance, "Set ->style according to font"), SM(NAME_set, 5, T_set, setTextCursor, NAME_area, "Set x, y, w, h and baseline") }; /* Get Methods */ #define get_textCursor NULL /* static getdecl get_textCursor[] = { }; */ /* Resources */ static classvardecl rc_textCursor[] = { RC(NAME_fixedFontStyle, "name", "open_look", "->style for fixed fonts"), RC(NAME_proportionalFontStyle, "name", "open_look", "->style for proportional fonts"), RC(NAME_style, NULL, "open_look", NULL), RC(NAME_colour, RC_REFINE, "when(@colour_display, red, black)", NULL), RC(NAME_inactiveColour, RC_REFINE, "black", NULL) }; /* Class Declaration */ static Name textCursor_termnames[] = { NAME_style }; ClassDecl(textCursor_decls, var_textCursor, send_textCursor, get_textCursor, rc_textCursor, 1, textCursor_termnames, "$Rev$"); status makeClassTextCursor(Class class) { declareClass(class, &textCursor_decls); setRedrawFunctionClass(class, RedrawAreaTextCursor); succeed; }