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| author | mitchellwrosen@chromium.org <mitchellwrosen@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2012-05-20 00:55:04 +0000 |
|---|---|---|
| committer | mitchellwrosen@chromium.org <mitchellwrosen@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2012-05-20 00:55:04 +0000 |
| commit | b51f6ab136aa37f932c3d268693238f8f6b9e52f (patch) | |
| tree | 3694b25628141493c63e58872841c852f49b6db7 /chrome/common/extensions/docs/examples/api/ttsEngine | |
| parent | 6f3a4ecd452f649550c971fc612c3b0eff740d3f (diff) | |
| download | chromium_src-b51f6ab136aa37f932c3d268693238f8f6b9e52f.zip chromium_src-b51f6ab136aa37f932c3d268693238f8f6b9e52f.tar.gz chromium_src-b51f6ab136aa37f932c3d268693238f8f6b9e52f.tar.bz2 | |
Sample extensions page does not feature chrome.ttsEngine.
Wrote a small sample TTS Engine that prints text to a small window on the bottom
of the screen rather than synthesizing speech.
BUG=117480
TEST=Manual
Review URL: https://chromiumcodereview.appspot.com/9688004
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@138047 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'chrome/common/extensions/docs/examples/api/ttsEngine')
4 files changed, 181 insertions, 0 deletions
diff --git a/chrome/common/extensions/docs/examples/api/ttsEngine/console_tts_engine.zip b/chrome/common/extensions/docs/examples/api/ttsEngine/console_tts_engine.zip new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/chrome/common/extensions/docs/examples/api/ttsEngine/console_tts_engine.zip diff --git a/chrome/common/extensions/docs/examples/api/ttsEngine/console_tts_engine/console_tts_engine.html b/chrome/common/extensions/docs/examples/api/ttsEngine/console_tts_engine/console_tts_engine.html new file mode 100644 index 0000000..62fd68d --- /dev/null +++ b/chrome/common/extensions/docs/examples/api/ttsEngine/console_tts_engine/console_tts_engine.html @@ -0,0 +1,49 @@ +<html> +<head> + <title>Console TTS Engine</title> + <style> + body { + font-family: arial, helvetica, sans-serif; + } + table { + text-align: center; + padding: 10px; + } + #text { + text-align: left; + padding: 4px; + border: 1px solid #aaa; + width: 99%; + min-height: 100px; + overflow: auto; + } + </style> + <script type="text/javascript"> + function clearText() { + document.getElementById("text").innerHTML = ""; + } + </script> +</head> +<body> + <table> + <tr> + <th>Voice Name</th> + <th>Language</th> + <th>Gender</th> + <th>Rate</th> + <th>Pitch</th> + <th>Volume</th> + </tr> + <tr> + <td id="voiceName"></td> + <td id="lang"></td> + <td id="gender"></td> + <td id="rate"></td> + <td id="pitch"></td> + <td id="volume"></td> + </tr> + </table> + <button onclick="clearText()">Clear</button> + <p id="text"></p> +</body> +</html> diff --git a/chrome/common/extensions/docs/examples/api/ttsEngine/console_tts_engine/console_tts_engine.js b/chrome/common/extensions/docs/examples/api/ttsEngine/console_tts_engine/console_tts_engine.js new file mode 100644 index 0000000..3f69094f --- /dev/null +++ b/chrome/common/extensions/docs/examples/api/ttsEngine/console_tts_engine/console_tts_engine.js @@ -0,0 +1,115 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +var timeoutId; +var ttsId = -1; +var ttsWindow; +var milliseconds; +var curOptions; + +function areNewOptions(options) { + var properties = ['voiceName', 'lang', 'gender', 'rate', 'pitch', 'volume']; + + for (var i = 0; i < properties.length; ++i) { + if (options[properties[i]] != curOptions[properties[i]]) { + return true; + } + } + + return false; +} + +function getTtsElement(element) { + return ttsWindow.document.getElementById(element); +} + +function appendText(text) { + getTtsElement("text").innerHTML += text; +} + +function logOptions() { + getTtsElement("voiceName").innerHTML = curOptions.voiceName; + getTtsElement("lang").innerHTML = curOptions.lang; + getTtsElement("gender").innerHTML = curOptions.gender; + getTtsElement("rate").innerHTML = curOptions.rate; + getTtsElement("pitch").innerHTML = curOptions.pitch; + getTtsElement("volume").innerHTML = curOptions.volume; +} + +function logUtterance(utterance, index, sendTtsEvent) { + if (index == utterance.length) { + sendTtsEvent({'type': 'end', 'charIndex': utterance.length}); + return; + } + + appendText(utterance[index]); + + if (utterance[index] == ' ') { + sendTtsEvent({'type': 'word', 'charIndex': index}); + } + else if (utterance[index] == '.' || + utterance[index] == '?' || + utterance[index] == '!') { + sendTtsEvent({'type': 'sentence', 'charIndex': index}); + } + + timeoutId = setTimeout(function() { + logUtterance(utterance, ++index, sendTtsEvent) + }, milliseconds); +} + +var speakListener = function(utterance, options, sendTtsEvent) { + clearTimeout(timeoutId); + + sendTtsEvent({'type': 'start', 'charIndex': 0}); + + if (ttsId == -1) { + // Create a new window that overlaps the bottom 40% of the current window + chrome.windows.getCurrent(function(curWindow) { + chrome.windows.create( + {"url": "console_tts_engine.html", + "focused": false, + "top": Math.round(curWindow.top + 6/10 * curWindow.height), + "left": curWindow.left, + "width": curWindow.width, + "height": Math.round(4/10 * curWindow.height)}, + function(newWindow) { + ttsId = newWindow.id; + ttsWindow = chrome.extension.getViews({"windowId": ttsId})[0]; + + curOptions = options; + logOptions(); + + // Fastest timeout == 1 ms (@ options.rate = 10.0) + milliseconds = 10 / curOptions.rate; + logUtterance(utterance, 0, sendTtsEvent); + } + ); + }); + } else { + if (areNewOptions(options)) { + curOptions = options; + logOptions(); + + milliseconds = 10 / curOptions.rate; + } + + logUtterance(utterance, 0, sendTtsEvent); + } + +}; + +var stopListener = function() { + clearTimeout(timeoutId); +}; + +var removedListener = function(windowId, removeInfo) { + if (ttsId == windowId) { + ttsId = -1; + } +} + +chrome.ttsEngine.onSpeak.addListener(speakListener); +chrome.ttsEngine.onStop.addListener(stopListener); +chrome.windows.onRemoved.addListener(removedListener); diff --git a/chrome/common/extensions/docs/examples/api/ttsEngine/console_tts_engine/manifest.json b/chrome/common/extensions/docs/examples/api/ttsEngine/console_tts_engine/manifest.json new file mode 100644 index 0000000..43e7edc --- /dev/null +++ b/chrome/common/extensions/docs/examples/api/ttsEngine/console_tts_engine/manifest.json @@ -0,0 +1,17 @@ +{ + "name": "Console TTS Engine", + "version": "2.0", + "description": "A \"silent\" TTS engine that prints text to a small window rather than synthesizing speech.", + "permissions": ["ttsEngine", "tabs"], + "background": { + "scripts": ["console_tts_engine.js"] + }, + "tts_engine": { + "voices": [ + { + "voice_name": "Console", + "event_types": ["start", "word", "sentence", "end"] + } + ] + } +} |