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Diffstat (limited to 'modules/lightbox/js/tip_centerwindow.js')
| -rw-r--r-- | modules/lightbox/js/tip_centerwindow.js | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/modules/lightbox/js/tip_centerwindow.js b/modules/lightbox/js/tip_centerwindow.js new file mode 100644 index 0000000000..d2b1d0d92d --- /dev/null +++ b/modules/lightbox/js/tip_centerwindow.js @@ -0,0 +1,104 @@ +/* +tip_centerwindow.js v. 1.21 + +The latest version is available at +http://www.walterzorn.com +or http://www.devira.com +or http://www.walterzorn.de + +Initial author: Walter Zorn +Last modified: 3.6.2008 + +Extension for the tooltip library wz_tooltip.js. +Centers a sticky tooltip in the window's visible clientarea, +optionally even if the window is being scrolled or resized. +*/ + +// Make sure that the core file wz_tooltip.js is included first +if(typeof config == "undefined") + alert("Error:\nThe core tooltip script file 'wz_tooltip.js' must be included first, before the plugin files!"); + +// Here we define new global configuration variable(s) (as members of the +// predefined "config." class). +// From each of these config variables, wz_tooltip.js will automatically derive +// a command which can be passed to Tip() or TagToTip() in order to customize +// tooltips individually. These command names are just the config variable +// name(s) translated to uppercase, +// e.g. from config. CenterWindow a command CENTERWINDOW will automatically be +// created. + +//=================== GLOBAL TOOPTIP CONFIGURATION =========================// +config. CenterWindow = false // true or false - set to true if you want this to be the default behaviour +config. CenterAlways = false // true or false - recenter if window is resized or scrolled +//======= END OF TOOLTIP CONFIG, DO NOT CHANGE ANYTHING BELOW ==============// + + +// Create a new tt_Extension object (make sure that the name of that object, +// here ctrwnd, is unique amongst the extensions available for +// wz_tooltips.js): +var ctrwnd = new tt_Extension(); + +// Implement extension eventhandlers on which our extension should react +ctrwnd.OnLoadConfig = function() +{ + if(tt_aV[CENTERWINDOW]) + { + // Permit CENTERWINDOW only if the tooltip is sticky + if(tt_aV[STICKY]) + { + if(tt_aV[CENTERALWAYS]) + { + // IE doesn't support style.position "fixed" + if(tt_ie) + tt_AddEvtFnc(window, "scroll", Ctrwnd_DoCenter); + else + tt_aElt[0].style.position = "fixed"; + tt_AddEvtFnc(window, "resize", Ctrwnd_DoCenter); + } + return true; + } + tt_aV[CENTERWINDOW] = false; + } + return false; +}; +// We react on the first OnMouseMove event to center the tip on that occasion +ctrwnd.OnMoveBefore = Ctrwnd_DoCenter; +ctrwnd.OnKill = function() +{ + if(tt_aV[CENTERWINDOW] && tt_aV[CENTERALWAYS]) + { + tt_RemEvtFnc(window, "resize", Ctrwnd_DoCenter); + if(tt_ie) + tt_RemEvtFnc(window, "scroll", Ctrwnd_DoCenter); + else + tt_aElt[0].style.position = "absolute"; + } + return false; +}; +// Helper function +function Ctrwnd_DoCenter() +{ + if(tt_aV[CENTERWINDOW]) + { + var x, y, dx, dy; + + // Here we use some functions and variables (tt_w, tt_h) which the + // extension API of wz_tooltip.js provides for us + if(tt_ie || !tt_aV[CENTERALWAYS]) + { + dx = tt_GetScrollX(); + dy = tt_GetScrollY(); + } + else + { + dx = 0; + dy = 0; + } + // Position the tip, offset from the center by OFFSETX and OFFSETY + x = (tt_GetClientW() - tt_w) / 2 + dx + tt_aV[OFFSETX]; + y = (tt_GetClientH() - tt_h) / 2 + dy + tt_aV[OFFSETY]; + tt_SetTipPos(x, y); + return true; + } + return false; +} |