Annotation of ECHO_content/js/hl_lib.js, revision 1.4
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:
1.4 ! casties 17: Authors: ROC 23.11.2004
1.1 casties 18: */
19:
1.4 ! casties 20: var hllibVersion = "1.0.1";
1.1 casties 21: var hlAreas = new Object();
22: var hlTrafos = new Object();
23:
24: // Area class
25: function Area(id, target_id, a_x, a_y, a_w, a_h, type) {
26: this.id = id;
27: this.target_id = target_id;
28: this.rect = new Rectangle(a_x, a_y, a_w, a_h);
29: this.type = type;
30: this.pxarea = 0;
31: return this;
32: }
33:
34: function addArea(id, target_id, a_x, a_y, a_w, a_h, type) {
35: hlAreas[id] = new Area(id, target_id, a_x, a_y, a_w, a_h, type);
36: }
37:
1.4 ! casties 38: function parseTrafo(target) {
1.1 casties 39: // returns Transform for given target picsize
1.4 ! casties 40: var picsize = getElementRect(target);
1.1 casties 41: var trafo = new Transform();
42: // subtract area offset and size
43: //trafo.concat(getTranslation(new Position(-dlArea.x, -dlArea.y)));
44: //trafo.concat(getScale(new Size(1/dlArea.width, 1/dlArea.height)));
45: // scale to screen size
46: trafo.concat(getScale(picsize));
47: trafo.concat(getTranslation(picsize));
48: return trafo;
49: }
50:
51: function placeAreas() {
52: // positions all area-images
53: var maxsize = 0;
54: for (var a in hlAreas) {
55: var area = hlAreas[a];
56: var trafo = hlTrafos[area.target_id];
57: if (trafo) {
58: var rect = trafo.transform(area.rect);
59: area.pxarea = rect.getArea();
60: maxsize = Math.max(maxsize, area.pxarea);
1.2 casties 61: var img = getElement("i."+area.id);
62: if (area.type == "arrow") {
63: var pos = rect.getPosition();
64: var isize = getElementSize(img);
65: pos.x += rect.width * 0.5 - isize.width * 0.5;
66: pos.y += rect.height * 0.5 - isize.height * 0.5;
67: moveElement(img, pos);
68: if (img.layers) {
1.4 ! casties 69: // N4: grow layer for border
1.2 casties 70: img.resizeBy(2,2);
71: }
1.1 casties 72: } else {
1.2 casties 73: if (img.layers) {
1.4 ! casties 74: // for N4 we size a transparent image as the area
1.2 casties 75: var li = img.document.images[0];
76: li.width = rect.width;
77: li.height = rect.height;
78: }
79: moveElement(img, rect);
80: if (browserType.isIEWin) {
1.4 ! casties 81: // IE/Win needs to set the area once
1.2 casties 82: highlightPair(area.id, false);
83: }
1.1 casties 84: }
85: }
86: }
87: // add z-index (largest value for smallest area)
88: for (a in hlAreas) {
89: area = hlAreas[a];
90: var elem = getElement("i."+area.id);
91: if (elem.style) {
1.2 casties 92: elem.style.zIndex = getInt(maxsize - area.pxarea);
93: } else if (elem.layers) {
94: elem.zIndex = getInt(maxsize - area.pxarea);
1.1 casties 95: }
96: }
97: }
98:
99: function highlightPair(id, highlight) {
100: // hightlights or unhighlights the link and image of id
1.2 casties 101: //alert("highlightpair: "+id+" "+highlight);
1.1 casties 102: var area = hlAreas[id];
103: var img = getElement("i."+id);
104: var link = getElement("a."+id);
105: if (highlight) {
1.2 casties 106: if (link.style) {
107: link.style.backgroundColor = "#f08080";
108: } else if (link.layers) {
109: link.bgColor = "#f08080";
110: }
1.1 casties 111: if (area.type == "arrow") {
1.2 casties 112: if (img.style) {
113: img.style.borderStyle = "solid";
114: } else if (img.layers) {
115: img.bgColor = "#0000ff";
116: }
1.1 casties 117: } else if (area.type == "area") {
1.2 casties 118: if (img.style) {
119: img.style.background = "url(area_img)";
120: } else if (img.layers) {
121: img.background.src = "area_img";
122: }
1.1 casties 123: }
124: } else {
1.2 casties 125: if (link.style) {
126: link.style.backgroundColor = "";
127: } else if (link.layers) {
128: link.bgColor = null;
129: }
1.1 casties 130: if (area.type == "arrow") {
1.2 casties 131: if (img.style) {
132: img.style.borderStyle = "none";
133: } else if (img.layers) {
134: img.bgColor = null;
135: }
1.1 casties 136: } else if (area.type == "area") {
1.2 casties 137: if (img.style) {
138: img.style.background = "url(trans_img)";
139: } else if (img.layers) {
140: img.background.src = null;
141: }
1.1 casties 142: }
143: }
144: }
145:
146: function init() {
1.3 casties 147: map_init();
148: }
149:
1.4 ! casties 150: var elemScaler;
! 151: var dlTrafo;
! 152:
1.3 casties 153: function map_init() {
1.4 ! casties 154: // initialise baselib
! 155: base_init();
! 156: //alert("huhu4!");
! 157: elemScaler = getElement("overview");
! 158: dlTrafo = parseTrafo(elemScaler);
! 159: hlTrafos["overview"] = dlTrafo;
1.1 casties 160: placeAreas();
161: return null;
1.2 casties 162: }
163:
164: function showcoordsN4() {
165: var s = "";
166: for (var l in document.layers) {
167: if (l == "length") continue;
168: e = document.layers[l];
169: if (e) {
170: 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";
171: } else {
172: s += " {" + l + "}<br>\n";
173: }
174: }
175: return s;
1.1 casties 176: }
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