diff options
author | Reinier Zwitserloot <reinier@zwitserloot.com> | 2017-05-08 21:28:02 +0200 |
---|---|---|
committer | Reinier Zwitserloot <reinier@zwitserloot.com> | 2017-05-29 21:02:54 +0200 |
commit | 8b7a7cbc813653a3248d6cf3a7779e220957bc85 (patch) | |
tree | b9acfb9d68c6866acc3cfb9ee59d72ff43f1ebc3 /website-old/logi/iepngfix_tilebg.js | |
parent | 72fd50b9f1db1ab6bfc1753ba6a1e686a2f0f22c (diff) | |
download | lombok-8b7a7cbc813653a3248d6cf3a7779e220957bc85.tar.gz lombok-8b7a7cbc813653a3248d6cf3a7779e220957bc85.tar.bz2 lombok-8b7a7cbc813653a3248d6cf3a7779e220957bc85.zip |
The great rename: the old ‘website’ is now ‘website-old’, and ‘website2’ is now ‘website’.
Diffstat (limited to 'website-old/logi/iepngfix_tilebg.js')
-rwxr-xr-x | website-old/logi/iepngfix_tilebg.js | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/website-old/logi/iepngfix_tilebg.js b/website-old/logi/iepngfix_tilebg.js new file mode 100755 index 00000000..48795631 --- /dev/null +++ b/website-old/logi/iepngfix_tilebg.js @@ -0,0 +1,178 @@ +// IE5.5+ PNG Alpha Fix v2.0 Alpha: Background Tiling Support +// (c) 2008 Angus Turnbull http://www.twinhelix.com + +// This is licensed under the GNU LGPL, version 2.1 or later. +// For details, see: http://creativecommons.org/licenses/LGPL/2.1/ + +var IEPNGFix = window.IEPNGFix || {}; + +IEPNGFix.tileBG = function(elm, pngSrc, ready) { + // Params: A reference to a DOM element, the PNG src file pathname, and a + // hidden "ready-to-run" passed when called back after image preloading. + + var data; + try { + data = this.data[elm.uniqueID], + elmW = Math.max(elm.clientWidth, elm.scrollWidth), + elmH = Math.max(elm.clientHeight, elm.scrollHeight), + bgX = elm.currentStyle.backgroundPositionX, + bgY = elm.currentStyle.backgroundPositionY, + bgR = elm.currentStyle.backgroundRepeat; + } catch ( e ) { + return; + } + + // Cache of DIVs created per element, and image preloader/data. + if (!data.tiles) { + data.tiles = { + elm: elm, + src: '', + cache: [], + img: new Image(), + old: {} + }; + } + var tiles = data.tiles, + pngW = tiles.img.width, + pngH = tiles.img.height; + + if (pngSrc) { + if (!ready && pngSrc != tiles.src) { + // New image? Preload it with a callback to detect dimensions. + tiles.img.onload = function() { + this.onload = null; + IEPNGFix.tileBG(elm, pngSrc, 1); + }; + return tiles.img.src = pngSrc; + } + } else { + // No image? + if (tiles.src) ready = 1; + pngW = pngH = 0; + } + tiles.src = pngSrc; + + if (!ready && elmW == tiles.old.w && elmH == tiles.old.h && + bgX == tiles.old.x && bgY == tiles.old.y && bgR == tiles.old.r) { + return; + } + + // Convert English and percentage positions to pixels. + var pos = { + top: '0%', + left: '0%', + center: '50%', + bottom: '100%', + right: '100%' + }, + x, + y, + pc; + x = pos[bgX] || bgX; + y = pos[bgY] || bgY; + if (pc = x.match(/(\d+)%/)) { + x = Math.round((elmW - pngW) * (parseInt(pc[1]) / 100)); + } + if (pc = y.match(/(\d+)%/)) { + y = Math.round((elmH - pngH) * (parseInt(pc[1]) / 100)); + } + x = parseInt(x); + y = parseInt(y); + + // Handle backgroundRepeat. + var repeatX = { 'repeat': 1, 'repeat-x': 1 }[bgR], + repeatY = { 'repeat': 1, 'repeat-y': 1 }[bgR]; + if (repeatX) { + x %= pngW; + if (x > 0) x -= pngW; + } + if (repeatY) { + y %= pngH; + if (y > 0) y -= pngH; + } + + // Go! + this.hook.enabled = 0; + if (!({ relative: 1, absolute: 1 }[elm.currentStyle.position])) { + elm.style.position = 'relative'; + } + var count = 0, + xPos, + maxX = repeatX ? elmW : x + 0.1, + yPos, + maxY = repeatY ? elmH : y + 0.1, + d, + s, + isNew; + if (pngW && pngH) { + for (xPos = x; xPos < maxX; xPos += pngW) { + for (yPos = y; yPos < maxY; yPos += pngH) { + isNew = 0; + if (!tiles.cache[count]) { + tiles.cache[count] = document.createElement('div'); + isNew = 1; + } + var clipR = (xPos + pngW > elmW ? elmW - xPos : pngW), + clipB = (yPos + pngH > elmH ? elmH - yPos : pngH); + d = tiles.cache[count]; + s = d.style; + s.behavior = 'none'; + s.left = xPos + 'px'; + s.top = yPos + 'px'; + s.width = clipR + 'px'; + s.height = clipB + 'px'; + s.clip = 'rect(' + + (yPos < 0 ? 0 - yPos : 0) + 'px,' + + clipR + 'px,' + + clipB + 'px,' + + (xPos < 0 ? 0 - xPos : 0) + 'px)'; + s.display = 'block'; + if (isNew) { + s.position = 'absolute'; + s.zIndex = -999; + if (elm.firstChild) { + elm.insertBefore(d, elm.firstChild); + } else { + elm.appendChild(d); + } + } + this.fix(d, pngSrc, 0); + count++; + } + } + } + while (count < tiles.cache.length) { + this.fix(tiles.cache[count], '', 0); + tiles.cache[count++].style.display = 'none'; + } + + this.hook.enabled = 1; + + // Cache so updates are infrequent. + tiles.old = { + w: elmW, + h: elmH, + x: bgX, + y: bgY, + r: bgR + }; +}; + + +IEPNGFix.update = function() { + // Update all PNG backgrounds. + for (var i in IEPNGFix.data) { + var t = IEPNGFix.data[i].tiles; + if (t && t.elm && t.src) { + IEPNGFix.tileBG(t.elm, t.src); + } + } +}; +IEPNGFix.update.timer = 0; + +if (window.attachEvent && !window.opera) { + window.attachEvent('onresize', function() { + clearTimeout(IEPNGFix.update.timer); + IEPNGFix.update.timer = setTimeout(IEPNGFix.update, 100); + }); +} |