From 49d66a4000d18cf202c8211e39507f8dc13352c7 Mon Sep 17 00:00:00 2001 From: edmarmoretti Date: Thu, 17 Mar 2016 16:29:37 -0300 Subject: [PATCH] Ferramenta de animação em gif --- ferramentas/animagif/exec.php | 116 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++----------------------------- ferramentas/animagif/index.php | 29 +++++++++++++++++++++++++++++ pacotes/libgifjs/.gitignore | 3 +++ pacotes/libgifjs/LICENSE | 7 +++++++ pacotes/libgifjs/README.markdown | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ pacotes/libgifjs/example.html | 43 +++++++++++++++++++++++++++++++++++++++++++ pacotes/libgifjs/libgif.js | 990 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ pacotes/libgifjs/rubbable.js | 151 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 8 files changed, 1397 insertions(+), 29 deletions(-) create mode 100755 ferramentas/animagif/index.php create mode 100755 pacotes/libgifjs/.gitignore create mode 100755 pacotes/libgifjs/LICENSE create mode 100755 pacotes/libgifjs/README.markdown create mode 100755 pacotes/libgifjs/example.html create mode 100755 pacotes/libgifjs/libgif.js create mode 100755 pacotes/libgifjs/rubbable.js diff --git a/ferramentas/animagif/exec.php b/ferramentas/animagif/exec.php index 359f357..4510b23 100755 --- a/ferramentas/animagif/exec.php +++ b/ferramentas/animagif/exec.php @@ -1,18 +1,44 @@ + O arquivo gif é gerado na pasta temporária e reaproveitado como cache
+
Parâmetros:
+ &tema = código do tema (mapfile) existente em i3geo/temas
+ &colunat = coluna da tabela de atributos do tema que contém o período. + Essa coluna será utilizada para gerar o filtro para o desenho de cada frame que comporá o gif
+ &tempo = tempo em milisegundos entre cada frame
+ &w = largura da imagem em pixels
+ &h = altura da imagem em pixels
+ &cache = sim|nao utiliza cache do arquivo gif?
+ &mapext = extensão geográfica xmin,ymin,xmax,ymax que será usada nas imagens
+ &legenda = sim|nao
+ &transparente = sim|nao
+ "; + exit; +} +//http://localhost:8014/i3geo/ferramentas/animagif/exec.php?transparente=nao&legenda=sim&tema=dengue_casos_provaveis&colunat=semana_ano_epidemiologico&w=500&h=500&mapext=-74%20-32%20-34%204 include("../../ms_configura.php"); include("../../classesphp/funcoes_gerais.php"); include("../../classesphp/pega_variaveis.php"); include("../../classesphp/carrega_ext.php"); -$nometemp = nomeRandomico(); +if($cache == "nao"){ + $nometemp = nomeRandomico(); +} else { + $nometemp = md5(implode("",$_GET)); +} +if(empty($tempo)){ + $tempo = 40; +} $arqtemp = $dir_tmp."/".$nometemp; +if(file_exists($arqtemp.".gif")){ + $gifBinary = file_get_contents($arqtemp.".gif"); + //retorna o gif para o navegador + header('Content-type: image/gif'); + header('Content-Disposition: filename="'.$tema.'.gif"'); + echo $gifBinary; + exit; +} // //carrega o phpmapscript // @@ -71,20 +97,21 @@ for ($i=0;$i < $numlayers;$i++){ } //ajusta o label $l = $mapa->getlayerbyname("copyright"); -$classe = $l->getclass(0); -$label = $classe->getLabel(0); -$label->updatefromstring("LABEL TYPE TRUETYPE END"); -$label->set("font","arial"); -$label->set("size",15); -$label->updatefromstring("LABEL POSITION lr END"); -//$label->updatefromstring("LABEL OUTLINECOLOR 255 255 255 OUTLINEWIDTH 10 END"); -//$labels = new styleObj($classe); -$label->updatefromstring('LABEL STYLE GEOMTRANSFORM "labelpoly" COLOR 255 255 255 END END'); +if($l != ""){ + $classe = $l->getclass(0); + $label = $classe->getLabel(0); + $label->updatefromstring("LABEL TYPE TRUETYPE END"); + $label->set("font","arial"); + $label->set("size",15); + $label->updatefromstring("LABEL POSITION lr END"); + $label->updatefromstring('LABEL STYLE GEOMTRANSFORM "labelpoly" COLOR 255 255 255 END END'); +} // $mapa->save($arqtemp.".map"); //adiciona ao mapa base as camadas do mapfile indicado em $tema $nmapa = ms_newMapObj($locaplic."/temas/".$tema.".map"); $numlayers = $nmapa->numlayers; + for ($i=0;$i < $numlayers;$i++){ $layern = $nmapa->getlayer($i); $layern->set("status",MS_DEFAULT); @@ -107,6 +134,7 @@ for ($i=0;$i < $numlayers;$i++){ ms_newLayerObj($mapa, $layern); } $mapa->save($arqtemp.".map"); + //aplica a extensao geografica $layer = $mapa->getlayerbyname($tema); @@ -125,11 +153,32 @@ if ($ret != ""){ $mapa->setsize($w,$h); $sca = $mapa->scalebar; $sca->set("status",MS_OFF); +if($legenda == "sim"){ + $leg = $mapa->legend; + $leg->set("status",MS_EMBED); + $cor = $leg->imagecolor; + $cor->setrgb(250,250,250); + $labelleg = $leg->label; + //$labelleg->set("type",MS_TRUETYPE); + //$labelleg->set("font","arial"); + $labelleg->set("size",10); + //$leg->set("keyspacingy",10); + $layer = $mapa->getlayerbyname($tema); + $nclass = $layer->numclasses; + for($i=0;$i<$nclass;$i++){ + $classe = $layer->getclass($i); + if($classe->title === ""){ + $classe->title = $classe->name; + } + } +} $c = $mapa->imagecolor; $c->setrgb(-1,-1,-1); $o = $mapa->outputformat; $o->set("imagemode",MS_IMAGEMODE_RGBA); -$o->set("transparent",MS_TRUE); +if($transparente == "sim"){ + $o->set("transparent",MS_TRUE); +} $mapa->save($arqtemp.".map"); $mapa = ms_newMapObj($arqtemp.".map"); if(validaAcessoTemas($arqtemp.".map",false) == true){ @@ -152,21 +201,29 @@ sort($listaunica); $layer = $mapa->getlayerbyname($tema); $l = $mapa->getlayerbyname("copyright"); -$c = $l->getclass(0); -$label = $c->getLabel(0); - +if($l != ""){ + $c = $l->getclass(0); + $label = $c->getLabel(0); +} $imagens = array(); $duracao = array(); $objImagem = ""; //$listaunica = array($listaunica[1]); foreach($listaunica as $d){ - $filtro = "(([$colunat] = $d))"; + if(strtoupper($colunat) == $colunat){ + $filtro = "(('[$colunat]' = '$d'))"; + } + else{ + $filtro = "$colunat = '$d'"; + } $layer->setfilter($filtro); + //$mapa->save($arqtemp.".map");echo $arqtemp;exit; $nomec = $arqtemp.$d.".png"; $s = "LABEL TEXT '".$d."' END"; - $label->updateFromString($s); - + if($l != ""){ + $label->updateFromString($s); + } if($objImagem == ""){ $objImagem = $mapa->draw(); $objImagem->saveImage($nomec); @@ -177,16 +234,17 @@ foreach($listaunica as $d){ $objImagem->saveImage($nomec); } $imagens[] = $nomec; - $duracao[] = 40; + $duracao[] = $tempo; } //junta as imagens no gif include("../../pacotes/gifcreator/GifCreator.php"); $gc = new GifCreator(); -$gc->create($imagens, $duracao, 1); +$gc->create($imagens, $duracao, 0); $gifBinary = $gc->getGif(); +file_put_contents($arqtemp.".gif", $gifBinary); //retorna o gif para o navegador header('Content-type: image/gif'); -header('Content-Disposition: filename="butterfly.gif"'); +header('Content-Disposition: filename="'.$tema.'.gif"'); echo $gifBinary; exit; -?> \ No newline at end of file +?> diff --git a/ferramentas/animagif/index.php b/ferramentas/animagif/index.php new file mode 100755 index 0000000..1e37421 --- /dev/null +++ b/ferramentas/animagif/index.php @@ -0,0 +1,29 @@ + + + + + + + + + + + +
+ " height="" /> +
+ +   +   +   +   + +
+ + \ No newline at end of file diff --git a/pacotes/libgifjs/.gitignore b/pacotes/libgifjs/.gitignore new file mode 100755 index 0000000..07eb7e9 --- /dev/null +++ b/pacotes/libgifjs/.gitignore @@ -0,0 +1,3 @@ +.*.swp +.DS_Store + diff --git a/pacotes/libgifjs/LICENSE b/pacotes/libgifjs/LICENSE new file mode 100755 index 0000000..4fb3ffd --- /dev/null +++ b/pacotes/libgifjs/LICENSE @@ -0,0 +1,7 @@ +Copyright (c) 2011 Shachaf Ben-Kiki + +Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. diff --git a/pacotes/libgifjs/README.markdown b/pacotes/libgifjs/README.markdown new file mode 100755 index 0000000..898ac26 --- /dev/null +++ b/pacotes/libgifjs/README.markdown @@ -0,0 +1,87 @@ +# Overview + +Forked from the excelent jsgif project (https://github.com/shachaf/jsgif), which was implemented as a bookmarklet to manipulate animated gifs (http://slbkbs.org/jsgif). + +This is an attempt to pull out the gif parsing and playing logic, seperate it from the bookmarklet, and publish it as a library that you can use in your project. + +As an added bonus, you can make gifs "rubbable" so that scrubbing with your mouse (or rubbing with your finger on a touch device) cause the gif to move back and forth. + +# Example + +Please see example.html for, you know, an example. This will demonstrate how to use basic play controls for a gif, and also a rubbable one. + +Please note: this example must be loaded via a webserver, not directly from disk. I.e. http://localhost/libgif-js/example.html NOT file:///libgif-js/example.html. See the same-domain origin caveat at the bottom of this document for more information. + +For a hosted example, check out this post on BuzzFeed.com (http://www.buzzfeed.com/yacomink/rubbable-gifs) + +# Technical Details + +Of note to the developer, libjs.gif contains a class SuperGif, which can be used to manipulate animated gifs. + +## Class: SuperGif + +### Example usage: + +```html + + + +``` + +### Image tag attributes: + +* **rel:animated_src** - If this url is specified, it's loaded into the player instead of src. + This allows a preview frame to be shown until animated gif data is streamed into the canvas + +* **rel:auto_play** - Defaults to 1 if not specified. If set to zero, a call to the play() method is needed + +* **rel:rubbable** - Defaults to 0 if not specified. If set to 1, the gif will be a canvas with handlers to handle rubbing. + +### Constructor options + +* **gif** - Required. The DOM element of an img tag. +* **loop_mode** - Optional. Setting this to false will force disable looping of the gif. +* **auto\_play** - Optional. Same as the rel:auto_play attribute above, this arg overrides the img tag info. +* **max\_width** - Optional. Scale images over max\_width down to max_width. Helpful with mobile. +* **rubbable** - Optional. Make it rubbable. +* **on_end** - Optional. Add a callback for when the gif reaches the end of a single loop (one iteration). The first argument passed will be the gif HTMLElement. +* **loop_delay** - Optional. The amount of time to pause (in ms) after each single loop (iteration). +* **progressbar_height** - Optional. The height of the progress bar. +* **progressbar_background_color** - Optional. The background color of the progress bar. +* **progressbar_foreground_color** - Optional. The foreground color of the progress bar. + +### Instance methods + +#### loading +* **load( callback )** - Loads the gif specified by the src or rel:animated_src sttributie of the img tag into a canvas element and then calls callback if one is passed +* **load_url( src, callback )** - Loads the gif file specified in the src argument into a canvas element and then calls callback if one is passed + +#### play controls +* **play** - Start playing the gif +* **pause** - Stop playing the gif +* **move_to(i)** - Move to frame i of the gif +* **move_relative(i)** - Move i frames ahead (or behind if i < 0) + +#### getters +* **get_canvas** - The canvas element that the gif is playing in. Handy for assigning event handlers to. +* **get_playing** - Whether or not the gif is currently playing +* **get_loading** - Whether or not the gif has finished loading/parsing +* **get\_auto_play** - Whether or not the gif is set to play automatically +* **get_length** - The number of frames in the gif +* **get\_current_frame** - The index of the currently displayed frame of the gif + +## Caveat: same-domain origin + +The gif has to be on the same domain (and port and protocol) as the page you're loading. + +The library works by parsing gif image data in js, extracting individual frames, and rendering them on a canvas element. There is no way to get the raw image data from a normal image load, so this library does an XHR request for the image and forces the MIME-type to "text/plain". Consequently, using this library is subject to all the same cross-domain restrictions as any other XHR request. diff --git a/pacotes/libgifjs/example.html b/pacotes/libgifjs/example.html new file mode 100755 index 0000000..cd26adb --- /dev/null +++ b/pacotes/libgifjs/example.html @@ -0,0 +1,43 @@ + + + + + + + + + + Example gif + + + + +
+

Example with controls and no auto-play

+ +
+ + Pause | + Play | + Restart | + Step forward | + Step back + +

Example with rubbing and auto-play on

+ +
+ + +

+

Image via mlkshk

+
+ + + + \ No newline at end of file diff --git a/pacotes/libgifjs/libgif.js b/pacotes/libgifjs/libgif.js new file mode 100755 index 0000000..b14e0e9 --- /dev/null +++ b/pacotes/libgifjs/libgif.js @@ -0,0 +1,990 @@ +/* + SuperGif + + Example usage: + + + + + + Image tag attributes: + + rel:animated_src - If this url is specified, it's loaded into the player instead of src. + This allows a preview frame to be shown until animated gif data is streamed into the canvas + + rel:auto_play - Defaults to 1 if not specified. If set to zero, a call to the play() method is needed + + Constructor options args + + gif Required. The DOM element of an img tag. + loop_mode Optional. Setting this to false will force disable looping of the gif. + auto_play Optional. Same as the rel:auto_play attribute above, this arg overrides the img tag info. + max_width Optional. Scale images over max_width down to max_width. Helpful with mobile. + on_end Optional. Add a callback for when the gif reaches the end of a single loop (one iteration). The first argument passed will be the gif HTMLElement. + loop_delay Optional. The amount of time to pause (in ms) after each single loop (iteration). + draw_while_loading Optional. Determines whether the gif will be drawn to the canvas whilst it is loaded. + show_progress_bar Optional. Only applies when draw_while_loading is set to true. + + Instance methods + + // loading + load( callback ) Loads the gif specified by the src or rel:animated_src sttributie of the img tag into a canvas element and then calls callback if one is passed + load_url( src, callback ) Loads the gif file specified in the src argument into a canvas element and then calls callback if one is passed + + // play controls + play - Start playing the gif + pause - Stop playing the gif + move_to(i) - Move to frame i of the gif + move_relative(i) - Move i frames ahead (or behind if i < 0) + + // getters + get_canvas The canvas element that the gif is playing in. Handy for assigning event handlers to. + get_playing Whether or not the gif is currently playing + get_loading Whether or not the gif has finished loading/parsing + get_auto_play Whether or not the gif is set to play automatically + get_length The number of frames in the gif + get_current_frame The index of the currently displayed frame of the gif + + For additional customization (viewport inside iframe) these params may be passed: + c_w, c_h - width and height of canvas + vp_t, vp_l, vp_ w, vp_h - top, left, width and height of the viewport + + A bonus: few articles to understand what is going on + http://enthusiasms.org/post/16976438906 + http://www.matthewflickinger.com/lab/whatsinagif/bits_and_bytes.asp + http://humpy77.deviantart.com/journal/Frame-Delay-Times-for-Animated-GIFs-214150546 + +*/ +(function (root, factory) { + if (typeof define === 'function' && define.amd) { + define([], factory); + } else if (typeof exports === 'object') { + module.exports = factory(); + } else { + root.SuperGif = factory(); + } +}(this, function () { + // Generic functions + var bitsToNum = function (ba) { + return ba.reduce(function (s, n) { + return s * 2 + n; + }, 0); + }; + + var byteToBitArr = function (bite) { + var a = []; + for (var i = 7; i >= 0; i--) { + a.push( !! (bite & (1 << i))); + } + return a; + }; + + // Stream + /** + * @constructor + */ + // Make compiler happy. + var Stream = function (data) { + this.data = data; + this.len = this.data.length; + this.pos = 0; + + this.readByte = function () { + if (this.pos >= this.data.length) { + throw new Error('Attempted to read past end of stream.'); + } + if (data instanceof Uint8Array) + return data[this.pos++]; + else + return data.charCodeAt(this.pos++) & 0xFF; + }; + + this.readBytes = function (n) { + var bytes = []; + for (var i = 0; i < n; i++) { + bytes.push(this.readByte()); + } + return bytes; + }; + + this.read = function (n) { + var s = ''; + for (var i = 0; i < n; i++) { + s += String.fromCharCode(this.readByte()); + } + return s; + }; + + this.readUnsigned = function () { // Little-endian. + var a = this.readBytes(2); + return (a[1] << 8) + a[0]; + }; + }; + + var lzwDecode = function (minCodeSize, data) { + // TODO: Now that the GIF parser is a bit different, maybe this should get an array of bytes instead of a String? + var pos = 0; // Maybe this streaming thing should be merged with the Stream? + var readCode = function (size) { + var code = 0; + for (var i = 0; i < size; i++) { + if (data.charCodeAt(pos >> 3) & (1 << (pos & 7))) { + code |= 1 << i; + } + pos++; + } + return code; + }; + + var output = []; + + var clearCode = 1 << minCodeSize; + var eoiCode = clearCode + 1; + + var codeSize = minCodeSize + 1; + + var dict = []; + + var clear = function () { + dict = []; + codeSize = minCodeSize + 1; + for (var i = 0; i < clearCode; i++) { + dict[i] = [i]; + } + dict[clearCode] = []; + dict[eoiCode] = null; + + }; + + var code; + var last; + + while (true) { + last = code; + code = readCode(codeSize); + + if (code === clearCode) { + clear(); + continue; + } + if (code === eoiCode) break; + + if (code < dict.length) { + if (last !== clearCode) { + dict.push(dict[last].concat(dict[code][0])); + } + } + else { + if (code !== dict.length) throw new Error('Invalid LZW code.'); + dict.push(dict[last].concat(dict[last][0])); + } + output.push.apply(output, dict[code]); + + if (dict.length === (1 << codeSize) && codeSize < 12) { + // If we're at the last code and codeSize is 12, the next code will be a clearCode, and it'll be 12 bits long. + codeSize++; + } + } + + // I don't know if this is technically an error, but some GIFs do it. + //if (Math.ceil(pos / 8) !== data.length) throw new Error('Extraneous LZW bytes.'); + return output; + }; + + + // The actual parsing; returns an object with properties. + var parseGIF = function (st, handler) { + handler || (handler = {}); + + // LZW (GIF-specific) + var parseCT = function (entries) { // Each entry is 3 bytes, for RGB. + var ct = []; + for (var i = 0; i < entries; i++) { + ct.push(st.readBytes(3)); + } + return ct; + }; + + var readSubBlocks = function () { + var size, data; + data = ''; + do { + size = st.readByte(); + data += st.read(size); + } while (size !== 0); + return data; + }; + + var parseHeader = function () { + var hdr = {}; + hdr.sig = st.read(3); + hdr.ver = st.read(3); + if (hdr.sig !== 'GIF') throw new Error('Not a GIF file.'); // XXX: This should probably be handled more nicely. + hdr.width = st.readUnsigned(); + hdr.height = st.readUnsigned(); + + var bits = byteToBitArr(st.readByte()); + hdr.gctFlag = bits.shift(); + hdr.colorRes = bitsToNum(bits.splice(0, 3)); + hdr.sorted = bits.shift(); + hdr.gctSize = bitsToNum(bits.splice(0, 3)); + + hdr.bgColor = st.readByte(); + hdr.pixelAspectRatio = st.readByte(); // if not 0, aspectRatio = (pixelAspectRatio + 15) / 64 + if (hdr.gctFlag) { + hdr.gct = parseCT(1 << (hdr.gctSize + 1)); + } + handler.hdr && handler.hdr(hdr); + }; + + var parseExt = function (block) { + var parseGCExt = function (block) { + var blockSize = st.readByte(); // Always 4 + var bits = byteToBitArr(st.readByte()); + block.reserved = bits.splice(0, 3); // Reserved; should be 000. + block.disposalMethod = bitsToNum(bits.splice(0, 3)); + block.userInput = bits.shift(); + block.transparencyGiven = bits.shift(); + + block.delayTime = st.readUnsigned(); + + block.transparencyIndex = st.readByte(); + + block.terminator = st.readByte(); + + handler.gce && handler.gce(block); + }; + + var parseComExt = function (block) { + block.comment = readSubBlocks(); + handler.com && handler.com(block); + }; + + var parsePTExt = function (block) { + // No one *ever* uses this. If you use it, deal with parsing it yourself. + var blockSize = st.readByte(); // Always 12 + block.ptHeader = st.readBytes(12); + block.ptData = readSubBlocks(); + handler.pte && handler.pte(block); + }; + + var parseAppExt = function (block) { + var parseNetscapeExt = function (block) { + var blockSize = st.readByte(); // Always 3 + block.unknown = st.readByte(); // ??? Always 1? What is this? + block.iterations = st.readUnsigned(); + block.terminator = st.readByte(); + handler.app && handler.app.NETSCAPE && handler.app.NETSCAPE(block); + }; + + var parseUnknownAppExt = function (block) { + block.appData = readSubBlocks(); + // FIXME: This won't work if a handler wants to match on any identifier. + handler.app && handler.app[block.identifier] && handler.app[block.identifier](block); + }; + + var blockSize = st.readByte(); // Always 11 + block.identifier = st.read(8); + block.authCode = st.read(3); + switch (block.identifier) { + case 'NETSCAPE': + parseNetscapeExt(block); + break; + default: + parseUnknownAppExt(block); + break; + } + }; + + var parseUnknownExt = function (block) { + block.data = readSubBlocks(); + handler.unknown && handler.unknown(block); + }; + + block.label = st.readByte(); + switch (block.label) { + case 0xF9: + block.extType = 'gce'; + parseGCExt(block); + break; + case 0xFE: + block.extType = 'com'; + parseComExt(block); + break; + case 0x01: + block.extType = 'pte'; + parsePTExt(block); + break; + case 0xFF: + block.extType = 'app'; + parseAppExt(block); + break; + default: + block.extType = 'unknown'; + parseUnknownExt(block); + break; + } + }; + + var parseImg = function (img) { + var deinterlace = function (pixels, width) { + // Of course this defeats the purpose of interlacing. And it's *probably* + // the least efficient way it's ever been implemented. But nevertheless... + var newPixels = new Array(pixels.length); + var rows = pixels.length / width; + var cpRow = function (toRow, fromRow) { + var fromPixels = pixels.slice(fromRow * width, (fromRow + 1) * width); + newPixels.splice.apply(newPixels, [toRow * width, width].concat(fromPixels)); + }; + + // See appendix E. + var offsets = [0, 4, 2, 1]; + var steps = [8, 8, 4, 2]; + + var fromRow = 0; + for (var pass = 0; pass < 4; pass++) { + for (var toRow = offsets[pass]; toRow < rows; toRow += steps[pass]) { + cpRow(toRow, fromRow) + fromRow++; + } + } + + return newPixels; + }; + + img.leftPos = st.readUnsigned(); + img.topPos = st.readUnsigned(); + img.width = st.readUnsigned(); + img.height = st.readUnsigned(); + + var bits = byteToBitArr(st.readByte()); + img.lctFlag = bits.shift(); + img.interlaced = bits.shift(); + img.sorted = bits.shift(); + img.reserved = bits.splice(0, 2); + img.lctSize = bitsToNum(bits.splice(0, 3)); + + if (img.lctFlag) { + img.lct = parseCT(1 << (img.lctSize + 1)); + } + + img.lzwMinCodeSize = st.readByte(); + + var lzwData = readSubBlocks(); + + img.pixels = lzwDecode(img.lzwMinCodeSize, lzwData); + + if (img.interlaced) { // Move + img.pixels = deinterlace(img.pixels, img.width); + } + + handler.img && handler.img(img); + }; + + var parseBlock = function () { + var block = {}; + block.sentinel = st.readByte(); + + switch (String.fromCharCode(block.sentinel)) { // For ease of matching + case '!': + block.type = 'ext'; + parseExt(block); + break; + case ',': + block.type = 'img'; + parseImg(block); + break; + case ';': + block.type = 'eof'; + handler.eof && handler.eof(block); + break; + default: + throw new Error('Unknown block: 0x' + block.sentinel.toString(16)); // TODO: Pad this with a 0. + } + + if (block.type !== 'eof') setTimeout(parseBlock, 0); + }; + + var parse = function () { + parseHeader(); + setTimeout(parseBlock, 0); + }; + + parse(); + }; + + var SuperGif = function ( opts ) { + var options = { + //viewport position + vp_l: 0, + vp_t: 0, + vp_w: null, + vp_h: null, + //canvas sizes + c_w: null, + c_h: null + }; + for (var i in opts ) { options[i] = opts[i] } + if (options.vp_w && options.vp_h) options.is_vp = true; + + var stream; + var hdr; + + var loadError = null; + var loading = false; + + var transparency = null; + var delay = null; + var disposalMethod = null; + var disposalRestoreFromIdx = null; + var lastDisposalMethod = null; + var frame = null; + var lastImg = null; + + var playing = true; + var forward = true; + + var ctx_scaled = false; + + var frames = []; + var frameOffsets = []; // elements have .x and .y properties + + var gif = options.gif; + if (typeof options.auto_play == 'undefined') + options.auto_play = (!gif.getAttribute('rel:auto_play') || gif.getAttribute('rel:auto_play') == '1'); + + var onEndListener = (options.hasOwnProperty('on_end') ? options.on_end : null); + var loopDelay = (options.hasOwnProperty('loop_delay') ? options.loop_delay : 0); + var overrideLoopMode = (options.hasOwnProperty('loop_mode') ? options.loop_mode : 'auto'); + var drawWhileLoading = (options.hasOwnProperty('draw_while_loading') ? options.draw_while_loading : true); + var showProgressBar = drawWhileLoading ? (options.hasOwnProperty('show_progress_bar') ? options.show_progress_bar : true) : false; + var progressBarHeight = (options.hasOwnProperty('progressbar_height') ? options.progressbar_height : 25); + var progressBarBackgroundColor = (options.hasOwnProperty('progressbar_background_color') ? options.progressbar_background_color : 'rgba(255,255,255,0.4)'); + var progressBarForegroundColor = (options.hasOwnProperty('progressbar_foreground_color') ? options.progressbar_foreground_color : 'rgba(255,0,22,.8)'); + + var clear = function () { + transparency = null; + delay = null; + lastDisposalMethod = disposalMethod; + disposalMethod = null; + frame = null; + }; + + // XXX: There's probably a better way to handle catching exceptions when + // callbacks are involved. + var doParse = function () { + try { + parseGIF(stream, handler); + } + catch (err) { + doLoadError('parse'); + } + }; + + var doText = function (text) { + toolbar.innerHTML = text; // innerText? Escaping? Whatever. + toolbar.style.visibility = 'visible'; + }; + + var setSizes = function(w, h) { + canvas.width = w * get_canvas_scale(); + canvas.height = h * get_canvas_scale(); + toolbar.style.minWidth = ( w * get_canvas_scale() ) + 'px'; + + tmpCanvas.width = w; + tmpCanvas.height = h; + tmpCanvas.style.width = w + 'px'; + tmpCanvas.style.height = h + 'px'; + tmpCanvas.getContext('2d').setTransform(1, 0, 0, 1, 0, 0); + }; + + var setFrameOffset = function(frame, offset) { + if (!frameOffsets[frame]) { + frameOffsets[frame] = offset; + return; + } + if (typeof offset.x !== 'undefined') { + frameOffsets[frame].x = offset.x; + } + if (typeof offset.y !== 'undefined') { + frameOffsets[frame].y = offset.y; + } + }; + + var doShowProgress = function (pos, length, draw) { + if (draw && showProgressBar) { + var height = progressBarHeight; + var left, mid, top, width; + if (options.is_vp) { + if (!ctx_scaled) { + top = (options.vp_t + options.vp_h - height); + height = height; + left = options.vp_l; + mid = left + (pos / length) * options.vp_w; + width = canvas.width; + } else { + top = (options.vp_t + options.vp_h - height) / get_canvas_scale(); + height = height / get_canvas_scale(); + left = (options.vp_l / get_canvas_scale() ); + mid = left + (pos / length) * (options.vp_w / get_canvas_scale()); + width = canvas.width / get_canvas_scale(); + } + //some debugging, draw rect around viewport + if (false) { + if (!ctx_scaled) { + var l = options.vp_l, t = options.vp_t; + var w = options.vp_w, h = options.vp_h; + } else { + var l = options.vp_l/get_canvas_scale(), t = options.vp_t/get_canvas_scale(); + var w = options.vp_w/get_canvas_scale(), h = options.vp_h/get_canvas_scale(); + } + ctx.rect(l,t,w,h); + ctx.stroke(); + } + } + else { + top = (canvas.height - height) / (ctx_scaled ? get_canvas_scale() : 1); + mid = ((pos / length) * canvas.width) / (ctx_scaled ? get_canvas_scale() : 1); + width = canvas.width / (ctx_scaled ? get_canvas_scale() : 1 ); + height /= ctx_scaled ? get_canvas_scale() : 1; + } + + ctx.fillStyle = progressBarBackgroundColor; + ctx.fillRect(mid, top, width - mid, height); + + ctx.fillStyle = progressBarForegroundColor; + ctx.fillRect(0, top, mid, height); + } + }; + + var doLoadError = function (originOfError) { + var drawError = function () { + ctx.fillStyle = 'black'; + ctx.fillRect(0, 0, options.c_w ? options.c_w : hdr.width, options.c_h ? options.c_h : hdr.height); + ctx.strokeStyle = 'red'; + ctx.lineWidth = 3; + ctx.moveTo(0, 0); + ctx.lineTo(options.c_w ? options.c_w : hdr.width, options.c_h ? options.c_h : hdr.height); + ctx.moveTo(0, options.c_h ? options.c_h : hdr.height); + ctx.lineTo(options.c_w ? options.c_w : hdr.width, 0); + ctx.stroke(); + }; + + loadError = originOfError; + hdr = { + width: gif.width, + height: gif.height + }; // Fake header. + frames = []; + drawError(); + }; + + var doHdr = function (_hdr) { + hdr = _hdr; + setSizes(hdr.width, hdr.height) + }; + + var doGCE = function (gce) { + pushFrame(); + clear(); + transparency = gce.transparencyGiven ? gce.transparencyIndex : null; + delay = gce.delayTime; + disposalMethod = gce.disposalMethod; + // We don't have much to do with the rest of GCE. + }; + + var pushFrame = function () { + if (!frame) return; + frames.push({ + data: frame.getImageData(0, 0, hdr.width, hdr.height), + delay: delay + }); + frameOffsets.push({ x: 0, y: 0 }); + }; + + var doImg = function (img) { + if (!frame) frame = tmpCanvas.getContext('2d'); + + var currIdx = frames.length; + + //ct = color table, gct = global color table + var ct = img.lctFlag ? img.lct : hdr.gct; // TODO: What if neither exists? + + /* + Disposal method indicates the way in which the graphic is to + be treated after being displayed. + + Values : 0 - No disposal specified. The decoder is + not required to take any action. + 1 - Do not dispose. The graphic is to be left + in place. + 2 - Restore to background color. The area used by the + graphic must be restored to the background color. + 3 - Restore to previous. The decoder is required to + restore the area overwritten by the graphic with + what was there prior to rendering the graphic. + + Importantly, "previous" means the frame state + after the last disposal of method 0, 1, or 2. + */ + if (currIdx > 0) { + if (lastDisposalMethod === 3) { + // Restore to previous + // If we disposed every frame including first frame up to this point, then we have + // no composited frame to restore to. In this case, restore to background instead. + if (disposalRestoreFromIdx !== null) { + frame.putImageData(frames[disposalRestoreFromIdx].data, 0, 0); + } else { + frame.clearRect(lastImg.leftPos, lastImg.topPos, lastImg.width, lastImg.height); + } + } else { + disposalRestoreFromIdx = currIdx - 1; + } + + if (lastDisposalMethod === 2) { + // Restore to background color + // Browser implementations historically restore to transparent; we do the same. + // http://www.wizards-toolkit.org/discourse-server/viewtopic.php?f=1&t=21172#p86079 + frame.clearRect(lastImg.leftPos, lastImg.topPos, lastImg.width, lastImg.height); + } + } + // else, Undefined/Do not dispose. + // frame contains final pixel data from the last frame; do nothing + + //Get existing pixels for img region after applying disposal method + var imgData = frame.getImageData(img.leftPos, img.topPos, img.width, img.height); + + //apply color table colors + img.pixels.forEach(function (pixel, i) { + // imgData.data === [R,G,B,A,R,G,B,A,...] + if (pixel !== transparency) { + imgData.data[i * 4 + 0] = ct[pixel][0]; + imgData.data[i * 4 + 1] = ct[pixel][1]; + imgData.data[i * 4 + 2] = ct[pixel][2]; + imgData.data[i * 4 + 3] = 255; // Opaque. + } + }); + + frame.putImageData(imgData, img.leftPos, img.topPos); + + if (!ctx_scaled) { + ctx.scale(get_canvas_scale(),get_canvas_scale()); + ctx_scaled = true; + } + + // We could use the on-page canvas directly, except that we draw a progress + // bar for each image chunk (not just the final image). + if (drawWhileLoading) { + ctx.drawImage(tmpCanvas, 0, 0); + drawWhileLoading = options.auto_play; + } + + lastImg = img; + }; + + var player = (function () { + var i = -1; + var iterationCount = 0; + + var showingInfo = false; + var pinned = false; + + /** + * Gets the index of the frame "up next". + * @returns {number} + */ + var getNextFrameNo = function () { + var delta = (forward ? 1 : -1); + return (i + delta + frames.length) % frames.length; + }; + + var stepFrame = function (amount) { // XXX: Name is confusing. + i = i + amount; + + putFrame(); + }; + + var step = (function () { + var stepping = false; + + var completeLoop = function () { + if (onEndListener !== null) + onEndListener(gif); + iterationCount++; + + if (overrideLoopMode !== false || iterationCount < 0) { + doStep(); + } else { + stepping = false; + playing = false; + } + }; + + var doStep = function () { + stepping = playing; + if (!stepping) return; + + stepFrame(1); + var delay = frames[i].delay * 10; + if (!delay) delay = 100; // FIXME: Should this even default at all? What should it be? + + var nextFrameNo = getNextFrameNo(); + if (nextFrameNo === 0) { + delay += loopDelay; + setTimeout(completeLoop, delay); + } else { + setTimeout(doStep, delay); + } + }; + + return function () { + if (!stepping) setTimeout(doStep, 0); + }; + }()); + + var putFrame = function () { + var offset; + i = parseInt(i, 10); + + if (i > frames.length - 1){ + i = 0; + } + + if (i < 0){ + i = 0; + } + + offset = frameOffsets[i]; + + tmpCanvas.getContext("2d").putImageData(frames[i].data, offset.x, offset.y); + ctx.globalCompositeOperation = "copy"; + ctx.drawImage(tmpCanvas, 0, 0); + }; + + var play = function () { + playing = true; + step(); + }; + + var pause = function () { + playing = false; + }; + + + return { + init: function () { + if (loadError) return; + + if ( ! (options.c_w && options.c_h) ) { + ctx.scale(get_canvas_scale(),get_canvas_scale()); + } + + if (options.auto_play) { + step(); + } + else { + i = 0; + putFrame(); + } + }, + step: step, + play: play, + pause: pause, + playing: playing, + move_relative: stepFrame, + current_frame: function() { return i; }, + length: function() { return frames.length }, + move_to: function ( frame_idx ) { + i = frame_idx; + putFrame(); + } + } + }()); + + var doDecodeProgress = function (draw) { + doShowProgress(stream.pos, stream.data.length, draw); + }; + + var doNothing = function () {}; + /** + * @param{boolean=} draw Whether to draw progress bar or not; this is not idempotent because of translucency. + * Note that this means that the text will be unsynchronized with the progress bar on non-frames; + * but those are typically so small (GCE etc.) that it doesn't really matter. TODO: Do this properly. + */ + var withProgress = function (fn, draw) { + return function (block) { + fn(block); + doDecodeProgress(draw); + }; + }; + + + var handler = { + hdr: withProgress(doHdr), + gce: withProgress(doGCE), + com: withProgress(doNothing), + // I guess that's all for now. + app: { + // TODO: Is there much point in actually supporting iterations? + NETSCAPE: withProgress(doNothing) + }, + img: withProgress(doImg, true), + eof: function (block) { + //toolbar.style.display = ''; + pushFrame(); + doDecodeProgress(false); + if ( ! (options.c_w && options.c_h) ) { + canvas.width = hdr.width * get_canvas_scale(); + canvas.height = hdr.height * get_canvas_scale(); + } + player.init(); + loading = false; + if (load_callback) { + load_callback(gif); + } + + } + }; + + var init = function () { + var parent = gif.parentNode; + + var div = document.createElement('div'); + canvas = document.createElement('canvas'); + ctx = canvas.getContext('2d'); + toolbar = document.createElement('div'); + + tmpCanvas = document.createElement('canvas'); + + div.width = canvas.width = gif.width; + div.height = canvas.height = gif.height; + toolbar.style.minWidth = gif.width + 'px'; + + div.className = 'jsgif'; + toolbar.className = 'jsgif_toolbar'; + div.appendChild(canvas); + div.appendChild(toolbar); + + parent.insertBefore(div, gif); + parent.removeChild(gif); + + if (options.c_w && options.c_h) setSizes(options.c_w, options.c_h); + initialized=true; + }; + + var get_canvas_scale = function() { + var scale; + if (options.max_width && hdr && hdr.width > options.max_width) { + scale = options.max_width / hdr.width; + } + else { + scale = 1; + } + return scale; + } + + var canvas, ctx, toolbar, tmpCanvas; + var initialized = false; + var load_callback = false; + + var load_setup = function(callback) { + if (loading) return false; + if (callback) load_callback = callback; + else load_callback = false; + + loading = true; + frames = []; + clear(); + disposalRestoreFromIdx = null; + lastDisposalMethod = null; + frame = null; + lastImg = null; + + return true; + } + + return { + // play controls + play: player.play, + pause: player.pause, + move_relative: player.move_relative, + move_to: player.move_to, + + // getters for instance vars + get_playing : function() { return playing }, + get_canvas : function() { return canvas }, + get_canvas_scale : function() { return get_canvas_scale() }, + get_loading : function() { return loading }, + get_auto_play : function() { return options.auto_play }, + get_length : function() { return player.length() }, + get_current_frame: function() { return player.current_frame() }, + load_url: function(src,callback){ + if (!load_setup(callback)) return; + + var h = new XMLHttpRequest(); + // new browsers (XMLHttpRequest2-compliant) + h.open('GET', src, true); + + if ('overrideMimeType' in h) { + h.overrideMimeType('text/plain; charset=x-user-defined'); + } + + // old browsers (XMLHttpRequest-compliant) + else if ('responseType' in h) { + h.responseType = 'arraybuffer'; + } + + // IE9 (Microsoft.XMLHTTP-compliant) + else { + h.setRequestHeader('Accept-Charset', 'x-user-defined'); + } + + h.onloadstart = function() { + // Wait until connection is opened to replace the gif element with a canvas to avoid a blank img + if (!initialized) init(); + }; + h.onload = function(e) { + if (this.status != 200) { + doLoadError('xhr - response'); + } + // emulating response field for IE9 + if (!('response' in this)) { + this.response = new VBArray(this.responseText).toArray().map(String.fromCharCode).join(''); + } + var data = this.response; + if (data.toString().indexOf("ArrayBuffer") > 0) { + data = new Uint8Array(data); + } + + stream = new Stream(data); + setTimeout(doParse, 0); + }; + h.onprogress = function (e) { + if (e.lengthComputable) doShowProgress(e.loaded, e.total, true); + }; + h.onerror = function() { doLoadError('xhr'); }; + h.send(); + }, + load: function (callback) { + this.load_url(gif.getAttribute('rel:animated_src') || gif.src,callback); + }, + load_raw: function(arr, callback) { + if (!load_setup(callback)) return; + if (!initialized) init(); + stream = new Stream(arr); + setTimeout(doParse, 0); + }, + set_frame_offset: setFrameOffset + }; + }; + + return SuperGif; +})); + + diff --git a/pacotes/libgifjs/rubbable.js b/pacotes/libgifjs/rubbable.js new file mode 100755 index 0000000..16a36b1 --- /dev/null +++ b/pacotes/libgifjs/rubbable.js @@ -0,0 +1,151 @@ +/* + RubbableGif + + Example usage: + + + + + + Image tag attributes: + + rel:animated_src - If this url is specified, it's loaded into the player instead of src. + This allows a preview frame to be shown until animated gif data is streamed into the canvas + + rel:auto_play - Defaults to 1 if not specified. If set to zero, the gif will be rubbable but will not + animate unless the user is rubbing it. + + Constructor options args + + gif Required. The DOM element of an img tag. + auto_play Optional. Same as the rel:auto_play attribute above, this arg overrides the img tag info. + max_width Optional. Scale images over max_width down to max_width. Helpful with mobile. + + Instance methods + + // loading + load( callback ) Loads the gif into a canvas element and then calls callback if one is passed + + // play controls + play - Start playing the gif + pause - Stop playing the gif + move_to(i) - Move to frame i of the gif + move_relative(i) - Move i frames ahead (or behind if i < 0) + + // getters + get_canvas The canvas element that the gif is playing in. + get_playing Whether or not the gif is currently playing + get_loading Whether or not the gif has finished loading/parsing + get_auto_play Whether or not the gif is set to play automatically + get_length The number of frames in the gif + get_current_frame The index of the currently displayed frame of the gif + + For additional customization (viewport inside iframe) these params may be passed: + c_w, c_h - width and height of canvas + vp_t, vp_l, vp_ w, vp_h - top, left, width and height of the viewport + +*/ +(function (root, factory) { + if (typeof define === 'function' && define.amd) { + define(['./libgif'], factory); + } else if (typeof exports === 'object') { + module.exports = factory(require('./libgif')); + } else { + root.RubbableGif = factory(root.SuperGif); + } +}(this, function (SuperGif) { + var RubbableGif = function( options ) { + var sup = new SuperGif( options ); + + var register_canvas_handers = function () { + + var isvp = function(x) { + return (options.vp_l ? ( x - options.vp_l ) : x ); + } + + var canvas = sup.get_canvas(); + var maxTime = 1000, + // allow movement if < 1000 ms (1 sec) + w = ( options.vp_w ? options.vp_w : canvas.width ), + maxDistance = Math.floor(w / (sup.get_length() * 2)), + // swipe movement of 50 pixels triggers the swipe + startX = 0, + startTime = 0; + + var cantouch = "ontouchend" in document; + + var aj = 0; + var last_played = 0; + + canvas.addEventListener((cantouch) ? 'touchstart' : 'mousedown', function (e) { + // prevent image drag (Firefox) + e.preventDefault(); + if (sup.get_auto_play()) sup.pause(); + + var pos = (e.touches && e.touches.length > 0) ? e.touches[0] : e; + + var x = (pos.layerX > 0) ? isvp(pos.layerX) : w / 2; + var progress = x / w; + + sup.move_to( Math.floor(progress * (sup.get_length() - 1)) ); + + startTime = e.timeStamp; + startX = isvp(pos.pageX); + }); + + canvas.addEventListener((cantouch) ? 'touchend' : 'mouseup', function (e) { + startTime = 0; + startX = 0; + if (sup.get_auto_play()) sup.play(); + }); + + canvas.addEventListener((cantouch) ? 'touchmove' : 'mousemove', function (e) { + e.preventDefault(); + var pos = (e.touches && e.touches.length > 0) ? e.touches[0] : e; + + var currentX = isvp(pos.pageX); + currentDistance = (startX === 0) ? 0 : Math.abs(currentX - startX); + // allow if movement < 1 sec + currentTime = e.timeStamp; + if (startTime !== 0 && currentDistance > maxDistance) { + if (currentX < startX && sup.get_current_frame() > 0) { + sup.move_relative(-1); + } + if (currentX > startX && sup.get_current_frame() < sup.get_length() - 1) { + sup.move_relative(1); + } + startTime = e.timeStamp; + startX = isvp(pos.pageX); + } + + var time_since_last_play = e.timeStamp - last_played; + { + aj++; + if (document.getElementById('tickles' + ((aj % 5) + 1))) document.getElementById('tickles' + ((aj % 5) + 1)).play(); + last_played = e.timeStamp; + } + + + }); + }; + + sup.orig_load = sup.load; + sup.load = function(callback) { + sup.orig_load( function() { + if (callback) callback(); + register_canvas_handers( sup ); + } ); + } + + return sup; + } + + return RubbableGif; +})); \ No newline at end of file -- libgit2 0.21.2