Annotation of ECHO_content/js/hl_lib.js, revision 1.3

1.1       casties     1: /* Copyright (C) 2004 itgroup MPIWG
                      2:  
                      3: This program is free software; you can redistribute it and/or
                      4: modify it under the terms of the GNU General Public License
                      5: as published by the Free Software Foundation; either version 2
                      6: of the License, or (at your option) any later version.
                      7:  
                      8: This program is distributed in the hope that it will be useful,
                      9: but WITHOUT ANY WARRANTY; without even the implied warranty of
                     10: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     11: GNU General Public License for more details.
                     12:  
                     13: You should have received a copy of the GNU General Public License
                     14: along with this program; if not, write to the Free Software
                     15: Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
                     16:  
                     17: Authors: ROC 6.5.2004
                     18: */
                     19: 
                     20: var hlAreas = new Object();
                     21: var hlTrafos = new Object();
                     22: 
                     23: // Area class
                     24: function Area(id, target_id, a_x, a_y, a_w, a_h, type) {
                     25:     this.id = id;
                     26:     this.target_id = target_id;
                     27:     this.rect = new Rectangle(a_x, a_y, a_w, a_h);
                     28:     this.type = type;
                     29:     this.pxarea = 0;
                     30:     return this;
                     31: }
                     32: 
                     33: function addArea(id, target_id, a_x, a_y, a_w, a_h, type) {
                     34:     hlAreas[id] = new Area(id, target_id, a_x, a_y, a_w, a_h, type);
                     35: }
                     36: 
                     37: function parseTrafo(target_id) {
                     38:     // returns Transform for given target picsize
1.2       casties    39:     var picsize = getElementRect(getElement(target_id));
1.1       casties    40:     var trafo = new Transform();
                     41:     // subtract area offset and size
                     42:     //trafo.concat(getTranslation(new Position(-dlArea.x, -dlArea.y)));
                     43:     //trafo.concat(getScale(new Size(1/dlArea.width, 1/dlArea.height)));
                     44:     // scale to screen size
                     45:     trafo.concat(getScale(picsize));
                     46:     trafo.concat(getTranslation(picsize));
                     47:     return trafo;
                     48: }
                     49: 
                     50: function placeAreas() {
                     51:     // positions all area-images
                     52:     var maxsize = 0;
                     53:     for (var a in hlAreas) {
                     54:    var area = hlAreas[a];
                     55:    var trafo = hlTrafos[area.target_id];
                     56:    if (trafo) {
                     57:        var rect = trafo.transform(area.rect);
                     58:        area.pxarea = rect.getArea();
                     59:        maxsize = Math.max(maxsize, area.pxarea);
1.2       casties    60:        var img = getElement("i."+area.id);
                     61:        if (area.type == "arrow") {
                     62:        var pos = rect.getPosition();
                     63:        var isize = getElementSize(img);
                     64:        pos.x += rect.width * 0.5 - isize.width * 0.5;
                     65:        pos.y += rect.height * 0.5 - isize.height * 0.5;
                     66:        moveElement(img, pos);
                     67:        if (img.layers) {
                     68:            // N4 grow layer for border
                     69:            img.resizeBy(2,2);
                     70:        }
1.1       casties    71:        } else {
1.2       casties    72:        if (img.layers) {
                     73:            // N4 size transparent image for area
                     74:            var li = img.document.images[0];
                     75:            li.width = rect.width;
                     76:            li.height = rect.height;
                     77:        }
                     78:        moveElement(img, rect);
                     79:        if (browserType.isIEWin) {
                     80:            highlightPair(area.id, false);
                     81:        }
1.1       casties    82:        }
                     83:    }
                     84:     }
                     85:     // add z-index (largest value for smallest area)
                     86:     for (a in hlAreas) {
                     87:    area = hlAreas[a];
                     88:    var elem = getElement("i."+area.id);
                     89:    if (elem.style) {
1.2       casties    90:        elem.style.zIndex = getInt(maxsize - area.pxarea);
                     91:    } else if (elem.layers) {
                     92:        elem.zIndex = getInt(maxsize - area.pxarea);
1.1       casties    93:    }
                     94:     }
                     95: }
                     96: 
                     97: function highlightPair(id, highlight) {
                     98:     // hightlights or unhighlights the link and image of id
1.2       casties    99:     //alert("highlightpair: "+id+" "+highlight);
1.1       casties   100:     var area = hlAreas[id];
                    101:     var img = getElement("i."+id);
                    102:     var link = getElement("a."+id);
                    103:     if (highlight) {
1.2       casties   104:    if (link.style) {
                    105:        link.style.backgroundColor = "#f08080";
                    106:    } else if (link.layers) {
                    107:        link.bgColor = "#f08080";
                    108:    }
1.1       casties   109:    if (area.type == "arrow") {
1.2       casties   110:        if (img.style) {
                    111:        img.style.borderStyle = "solid";
                    112:        } else if (img.layers) {
                    113:        img.bgColor = "#0000ff";
                    114:        }
1.1       casties   115:    } else if (area.type == "area") {
1.2       casties   116:        if (img.style) {
                    117:        img.style.background = "url(area_img)";
                    118:        } else if (img.layers) {
                    119:        img.background.src = "area_img";
                    120:        }
1.1       casties   121:    }
                    122:     } else {
1.2       casties   123:    if (link.style) {
                    124:        link.style.backgroundColor = "";
                    125:    } else if (link.layers) {
                    126:        link.bgColor = null;
                    127:    }
1.1       casties   128:    if (area.type == "arrow") {
1.2       casties   129:        if (img.style) {
                    130:        img.style.borderStyle = "none";
                    131:        } else if (img.layers) {
                    132:        img.bgColor = null;
                    133:        }
1.1       casties   134:    } else if (area.type == "area") {
1.2       casties   135:        if (img.style) {
                    136:        img.style.background = "url(trans_img)";
                    137:        } else if (img.layers) {
                    138:        img.background.src = null;
                    139:        }
1.1       casties   140:    }
                    141:     }
                    142: }
                    143: 
                    144: function init() {
1.3     ! casties   145:     map_init();
        !           146: }
        !           147: 
        !           148: function map_init() {
1.1       casties   149:     hlTrafos["overview"] = parseTrafo("overview");
                    150:     placeAreas();
                    151:     return null;
1.2       casties   152: }
                    153: 
                    154: function showcoordsN4() {
                    155:     var s = "";
                    156:     for (var l in document.layers) {
                    157:    if (l == "length") continue;
                    158:    e = document.layers[l];
                    159:    if (e) {
                    160:        s += " [" + e.name + "]: pageX:" + e.pageX + " pageY:" + e.pageY + " width:" + e.clip.width + " height:" + e.clip.height + " visibility:" + e.visibility + " zindex:" + e.zIndex + "<br>\n";
                    161:    } else {
                    162:        s += " {" + l + "}<br>\n";
                    163:    }
                    164:     }
                    165:     return s;
1.1       casties   166: }

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>