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Annotation of ECHO_content/js/hl_add.js, revision 1.1

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 23.11.2004
        !            18: 
        !            19: !! requires hl_lib.js !!
        !            20: */
        !            21: 
        !            22: var elemCoords;
        !            23: var elemRed;
        !            24: 
        !            25: function mapadd_init() {
        !            26:     map_init();
        !            27:     // form element for coordinates
        !            28:     elemCoords = getElement("coordstr");
        !            29:     // new red area 
        !            30:     elemRed = getElement("newarea");
        !            31:     selectArea();
        !            32: }
        !            33: 
        !            34: function selectArea() {
        !            35:     var click = 1;
        !            36:     var pt1, pt2;
        !            37:     var redrect;
        !            38:     window.focus();
        !            39: 
        !            40:     function areaClick(evt) {
        !            41:    // mouse click handler
        !            42:    if (click == 1) {
        !            43:        // first click -- start moving
        !            44:        click = 2;
        !            45:        pt1 = evtPosition(evt);
        !            46:        pt2 = pt1;
        !            47:        redrect = new Rectangle(pt1.x, pt1.y, 10, 10);
        !            48:        moveElement(elemRed, redrect);
        !            49:        // show element
        !            50:        if (elemRed.style) {
        !            51:        elemRed.style.background = "url(area_img)";
        !            52:        } else if (elemRed.layers) {
        !            53:        elemRed.background.src = "area_img";
        !            54:        }
        !            55:        showElement(elemRed, true);
        !            56:        // show moving
        !            57:        registerEvent("mousemove", elemScaler, areaMove);
        !            58:        registerEvent("mousemove", elemRed, areaMove);
        !            59:    } else {
        !            60:        // second click -- end moving
        !            61:        pt2 = evtPosition(evt);
        !            62:        unregisterEvent("mousemove", elemScaler, areaMove);
        !            63:        unregisterEvent("mousemove", elemRed, areaMove);
        !            64:        var p1 = dlTrafo.invtransform(pt1);
        !            65:        var p2 = dlTrafo.invtransform(pt2);
        !            66:        var ww = p2.x - p1.x;
        !            67:        var wh = p2.y - p1.y;
        !            68:        if ((ww > 0)&&(wh > 0)) {
        !            69:        var coords = cropFloat(p1.x)+","+cropFloat(p1.y)+","+cropFloat(ww)+","+cropFloat(wh);
        !            70:        // fill coords into form
        !            71:        elemCoords.value = coords;
        !            72:        }
        !            73:        // start again
        !            74:        click = 1;
        !            75:    }
        !            76:     }
        !            77: 
        !            78:     function areaMove(evt) {
        !            79:    // mouse move handler
        !            80:    pt2 = evtPosition(evt);
        !            81:    // restrict marks to move right and down
        !            82:    var w = pt2.x - pt1.x;
        !            83:    var h = pt2.y - pt1.y;
        !            84:    redrect.width = (w > 0) ? w : 1;
        !            85:    redrect.height = (h > 0) ? h : 1;
        !            86:    moveElement(elemRed, redrect);
        !            87:     }
        !            88: 
        !            89:     // starting event capture
        !            90:     registerEvent("mousedown", elemScaler, areaClick);
        !            91:     registerEvent("mousedown", elemRed, areaClick);
        !            92: }