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104 lines
3.1 KiB
104 lines
3.1 KiB
/* |
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tip_centerwindow.js v. 1.21 |
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The latest version is available at |
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http://www.walterzorn.com |
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or http://www.devira.com |
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or http://www.walterzorn.de |
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Initial author: Walter Zorn |
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Last modified: 3.6.2008 |
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Extension for the tooltip library wz_tooltip.js. |
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Centers a sticky tooltip in the window's visible clientarea, |
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optionally even if the window is being scrolled or resized. |
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*/ |
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// Make sure that the core file wz_tooltip.js is included first |
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if(typeof config == "undefined") |
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alert("Error:\nThe core tooltip script file 'wz_tooltip.js' must be included first, before the plugin files!"); |
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// Here we define new global configuration variable(s) (as members of the |
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// predefined "config." class). |
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// From each of these config variables, wz_tooltip.js will automatically derive |
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// a command which can be passed to Tip() or TagToTip() in order to customize |
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// tooltips individually. These command names are just the config variable |
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// name(s) translated to uppercase, |
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// e.g. from config. CenterWindow a command CENTERWINDOW will automatically be |
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// created. |
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//=================== GLOBAL TOOLTIP CONFIGURATION =========================// |
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config. CenterWindow = false // true or false - set to true if you want this to be the default behaviour |
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config. CenterAlways = false // true or false - recenter if window is resized or scrolled |
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//======= END OF TOOLTIP CONFIG, DO NOT CHANGE ANYTHING BELOW ==============// |
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// Create a new tt_Extension object (make sure that the name of that object, |
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// here ctrwnd, is unique amongst the extensions available for |
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// wz_tooltips.js): |
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var ctrwnd = new tt_Extension(); |
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// Implement extension eventhandlers on which our extension should react |
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ctrwnd.OnLoadConfig = function() |
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{ |
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if(tt_aV[CENTERWINDOW]) |
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{ |
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// Permit CENTERWINDOW only if the tooltip is sticky |
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if(tt_aV[STICKY]) |
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{ |
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if(tt_aV[CENTERALWAYS]) |
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{ |
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// IE doesn't support style.position "fixed" |
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if(tt_ie) |
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tt_AddEvtFnc(window, "scroll", Ctrwnd_DoCenter); |
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else |
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tt_aElt[0].style.position = "fixed"; |
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tt_AddEvtFnc(window, "resize", Ctrwnd_DoCenter); |
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} |
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return true; |
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} |
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tt_aV[CENTERWINDOW] = false; |
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} |
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return false; |
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}; |
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// We react on the first OnMouseMove event to center the tip on that occasion |
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ctrwnd.OnMoveBefore = Ctrwnd_DoCenter; |
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ctrwnd.OnKill = function() |
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{ |
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if(tt_aV[CENTERWINDOW] && tt_aV[CENTERALWAYS]) |
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{ |
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tt_RemEvtFnc(window, "resize", Ctrwnd_DoCenter); |
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if(tt_ie) |
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tt_RemEvtFnc(window, "scroll", Ctrwnd_DoCenter); |
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else |
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tt_aElt[0].style.position = "absolute"; |
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} |
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return false; |
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}; |
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// Helper function |
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function Ctrwnd_DoCenter() |
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{ |
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if(tt_aV[CENTERWINDOW]) |
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{ |
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var x, y, dx, dy; |
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// Here we use some functions and variables (tt_w, tt_h) which the |
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// extension API of wz_tooltip.js provides for us |
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if(tt_ie || !tt_aV[CENTERALWAYS]) |
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{ |
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dx = tt_GetScrollX(); |
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dy = tt_GetScrollY(); |
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} |
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else |
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{ |
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dx = 0; |
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dy = 0; |
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} |
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// Position the tip, offset from the center by OFFSETX and OFFSETY |
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x = (tt_GetClientW() - tt_w) / 2 + dx + tt_aV[OFFSETX]; |
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y = (tt_GetClientH() - tt_h) / 2 + dy + tt_aV[OFFSETY]; |
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tt_SetTipPos(x, y); |
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return true; |
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} |
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return false; |
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}
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