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https://github.com/Jermolene/TiddlyWiki5
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DynaView: Remove optisizer functionality
It was slow and clunky, and turned out to be easier to do in CSS.
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Jermolene
parent
4ec8881c2b
commit
25727df649
@ -1,6 +1,4 @@
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title: $:/config/DynaView/
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Optisizer: no
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Optisizer/Text: ABCDEFGHIJKLMnopqrstuvwxyzABCDEFGHIJKLMnopqrstuvwxyz
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ViewportDimensions: no
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UpdateAddressBar: no
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@ -34,23 +34,6 @@ The background task can optionally dynamically update a pair of state tiddlers w
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* Set the configuration tiddler $:/config/DynaView/ViewportDimensions to the text "yes" to enable this feature
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* The viewport dimensions can be found in $:/state/DynaView/ViewportDimensions/Width and $:/state/DynaView/ViewportDimensions/Height
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!! Font "Optisizer"
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The background task can optionally dynamically optimise the font size of a passage of text to match a desired line length.
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* Set the configuration tiddler $:/config/DynaView/Optisizer to the text "yes" to enable this feature
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* Optionally, update the configuration tiddler $:/config/DynaView/Optisizer/Text with the "maquette" -- a character string matchng the desired length (this string should not include spaces).
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* Assign the following CSS classes to appropriate elements on the page:
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** `.tc-dynaview-optisizer-site` for an HTML element whose `offsetWidth` property gives the desired output width
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** `.tc-dynaview-optisizer-maquette` for an HTML element that will contain the maquette
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* The computed optimum font size can be found in the tiddler $:/state/DynaView/Optisizer/FontSize
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The tiddler $:/plugins/tiddlywiki/dynaview/optisizer-maquette contains an example configuration that can be used to adjust the size of tiddler body text. To use it:
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* Set $:/config/DynaView/Optisizer to the text "yes"
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* Set $:/themes/tiddlywiki/vanilla/metrics/bodyfontsize to `{{$:/state/DynaView/Optisizer/FontSize}}`
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* Set $:/themes/tiddlywiki/vanilla/metrics/bodylineheight to `1.5` to ensure that the line height matches the font size
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! Zoom Features
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!! Document Body Zoom Classes
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@ -28,7 +28,6 @@ exports.startup = function() {
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window.addEventListener("scroll",onScroll,false);
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window.addEventListener("resize",onResize,false);
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$tw.hooks.addHook("th-page-refreshed",function() {
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optisizeFonts();
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checkTopmost();
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checkVisibility();
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saveViewportDimensions();
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@ -58,7 +57,6 @@ function onResize(event) {
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function worker() {
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if(isWaitingForAnimationFrame & (ANIM_FRAME_CAUSED_BY_RESIZE | ANIM_FRAME_CAUSED_BY_LOAD)) {
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optisizeFonts();
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saveViewportDimensions();
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}
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setZoomClasses();
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@ -67,55 +65,6 @@ function worker() {
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isWaitingForAnimationFrame = 0;
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}
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var lastSiteWidth, lastMaquetteString;
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function optisizeFonts() {
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if($tw.wiki.getTiddlerText("$:/config/DynaView/Optisizer") === "yes") {
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var domSite = document.querySelector(".tc-dynaview-optisizer-site"),
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domMaquette = document.querySelector(".tc-dynaview-optisizer-maquette");
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if(domSite && domMaquette) {
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// Check that we're not at the same size as last time
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if(domSite.offsetWidth === lastSiteWidth && $tw.wiki.getTiddlerText("$:/config/DynaView/Optisizer/Text") === lastMaquetteString) {
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return;
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}
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// Get the current font size
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domMaquette.style.fontSize = "";
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var initialFontSize = parseInt(window.getComputedStyle(domMaquette).fontSize,10),
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minFontSize = 1,
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maxFontSize = 100,
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adjustFontSize = maxFontSize,
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newFontSize = initialFontSize,
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maquetteWidth;
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lastSiteWidth = domSite.offsetWidth;
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lastMaquetteString = $tw.wiki.getTiddlerText("$:/config/DynaView/Optisizer/Text");
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while(domMaquette.firstChild) {
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domMaquette.removeChild(domMaquette.firstChild);
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}
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domMaquette.appendChild(document.createTextNode(lastMaquetteString));
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// We use a binary search algorithm to find the optimum size
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do {
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// Apply the size we're considering
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domMaquette.style.fontSize = newFontSize + "px";
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// Measure the width of the maquette
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maquetteWidth = domMaquette.offsetWidth;
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// Adjust bigger or smaller
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if(maquetteWidth < lastSiteWidth) {
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newFontSize += adjustFontSize;
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} else {
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newFontSize -= adjustFontSize;
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}
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newFontSize = Math.min(newFontSize,maxFontSize);
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newFontSize = Math.max(newFontSize,minFontSize);
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adjustFontSize = adjustFontSize / 2;
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} while (adjustFontSize > 0.5);
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var newFontSizeString = newFontSize + "px";
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if($tw.wiki.getTiddlerText("$:/state/DynaView/Optisizer/FontSize") !== newFontSizeString) {
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$tw.wiki.setText("$:/state/DynaView/Optisizer/FontSize",undefined,undefined,newFontSizeString,undefined);
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}
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}
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}
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}
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function setZoomClasses() {
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var zoomFactor = document.body.scrollWidth / window.innerWidth,
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classList = document.body.classList;
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@ -1,17 +0,0 @@
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title: $:/plugins/tiddlywiki/dynaview/examples/font-optisizer
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tags: $:/tags/dynaviewExamples
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caption: Font Optisizer
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<$button>
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<$action-setfield $tiddler="$:/config/DynaView/Optisizer" $value="yes"/>
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<$action-setfield $tiddler="$:/themes/tiddlywiki/vanilla/metrics/bodyfontsize" $value="{{$:/state/DynaView/Optisizer/FontSize}}"/>
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<$action-setfield $tiddler="$:/themes/tiddlywiki/vanilla/metrics/bodylineheight" $value="1.5"/>
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Enable font optisizer for tiddler body text
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</$button>
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<$button>
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<$action-setfield $tiddler="$:/config/DynaView/Optisizer" $value="no"/>
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<$action-setfield $tiddler="$:/themes/tiddlywiki/vanilla/metrics/bodyfontsize" $value="14px"/>
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<$action-setfield $tiddler="$:/themes/tiddlywiki/vanilla/metrics/bodylineheight" $value="20px"/>
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Disable font optisizer
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</$button>
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@ -1,24 +0,0 @@
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title: $:/plugins/tiddlywiki/dynaview/optisizer-maquette
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tags: $:/tags/AboveStory
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<div class="tc-tiddler-frame" style="border: none; background: none; -webkit-box-shadow: none; -moz-box-shadow: none; box-shadow: none; margin-top: 0; margin-bottom: 0; padding-top: 0; padding-bottom: 0; ">
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<div class="tc-tiddler-body tc-dynaview-optisizer-site" style="margin-top: -3em; visibility: hidden;">
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X
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</div>
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</div>
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<div style="position: relative;">
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<div style="position: absolute; visibility: hidden;">
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<div class="tc-dynaview-optisizer-maquette" style="white-space: nowrap;">
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</div>
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</div>
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</div>
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@ -7,7 +7,6 @@ This plugin makes it possible to build user interfaces that dynamically respond
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* CSS classes that allow rendering to be deferred until the output is scrolled into view
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* CSS classes that allow the opacity of DOM elements to vary according to the current zoom level
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* A daemon that can dynamically update a pair of state tiddlers with the current dimensions of the browser viewport
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* A daemon that can dynamically adjust the size of text to yield a particular number of characters per line
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* A daemon that can dynamically update the address bar with the title of the tiddler at the top of the viewport
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Some points to note about the zoom features:
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