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33 changes: 33 additions & 0 deletions
33
lib/src/main/java/com/ismartcoding/lib/androidsvg/CSS.java
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| package com.ismartcoding.lib.androidsvg; | ||
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| import com.ismartcoding.lib.androidsvg.utils.CSSBase; | ||
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| /** | ||
| * This is a container for pre-parsed CSS that can be used to avoid parsing raw CSS string on each | ||
| * render. It can be passed to RenderOptions like this: | ||
| * <pre class="code-block"> | ||
| * {@code | ||
| * CSS css = CSS.getFromString("...some complex and long css here that takes time to parse...") | ||
| * RenderOption renderOptions = RenderOptions.create(); | ||
| * renderOptions.css(css) // And now you can reuse the already parsed css | ||
| * svg1.renderToCanvas(canvas, renderOptions); | ||
| * svg2.renderToCanvas(canvas, renderOptions); | ||
| * svg3.renderToCanvas(canvas, renderOptions); | ||
| * } | ||
| * </pre> | ||
| */ | ||
| public class CSS extends CSSBase { | ||
| private CSS(String css) | ||
| { | ||
| super(css); | ||
| } | ||
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| /** | ||
| * @param css css string to parse | ||
| * @return pre-parsed CSS | ||
| */ | ||
| public static CSS getFromString(String css) | ||
| { | ||
| return new CSS(css); | ||
| } | ||
| } |
279 changes: 279 additions & 0 deletions
279
lib/src/main/java/com/ismartcoding/lib/androidsvg/PreserveAspectRatio.java
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| Original file line number | Diff line number | Diff line change |
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| package com.ismartcoding.lib.androidsvg; | ||
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| import com.ismartcoding.lib.androidsvg.utils.TextScanner; | ||
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| import java.util.HashMap; | ||
| import java.util.Map; | ||
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| public class PreserveAspectRatio | ||
| { | ||
| private final Alignment alignment; | ||
| private final Scale scale; | ||
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| private static final Map<String, Alignment> aspectRatioKeywords = new HashMap<>(10); | ||
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| /** | ||
| * Draw document at its natural position and scale. | ||
| */ | ||
| @SuppressWarnings("unused") | ||
| public static final PreserveAspectRatio UNSCALED = new PreserveAspectRatio(null, null); | ||
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| /** | ||
| * Stretch horizontally and vertically to fill the viewport. | ||
| * <p> | ||
| * Equivalent to <code>preserveAspectRatio="none"</code> in an SVG. | ||
| */ | ||
| @SuppressWarnings("WeakerAccess") | ||
| public static final PreserveAspectRatio STRETCH = new PreserveAspectRatio(Alignment.none, null); | ||
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| /** | ||
| * Keep the document's aspect ratio, but scale it so that it fits neatly inside the viewport. | ||
| * <p> | ||
| * The document will be centred in the viewport and may have blank strips at either the top and | ||
| * bottom of the viewport or at the sides. | ||
| * <p> | ||
| * Equivalent to <code>preserveAspectRatio="xMidYMid meet"</code> in an SVG. | ||
| */ | ||
| @SuppressWarnings("WeakerAccess") | ||
| public static final PreserveAspectRatio LETTERBOX = new PreserveAspectRatio(Alignment.xMidYMid, Scale.meet); | ||
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| /** | ||
| * Keep the document's aspect ratio, but scale it so that it fits neatly inside the viewport. | ||
| * <p> | ||
| * The document will be positioned at the top of tall and narrow viewports, and at the left of short | ||
| * and wide viewports. | ||
| * <p> | ||
| * Equivalent to <code>preserveAspectRatio="xMinYMin meet"</code> in an SVG. | ||
| */ | ||
| @SuppressWarnings("unused") | ||
| public static final PreserveAspectRatio START = new PreserveAspectRatio(Alignment.xMinYMin, Scale.meet); | ||
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| /** | ||
| * Keep the document's aspect ratio, but scale it so that it fits neatly inside the viewport. | ||
| * <p> | ||
| * The document will be positioned at the bottom of tall and narrow viewports, and at the right of short | ||
| * and wide viewports. | ||
| * <p> | ||
| * Equivalent to <code>preserveAspectRatio="xMaxYMax meet"</code> in an SVG. | ||
| */ | ||
| @SuppressWarnings("unused") | ||
| public static final PreserveAspectRatio END = new PreserveAspectRatio(Alignment.xMaxYMax, Scale.meet); | ||
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| /** | ||
| * Keep the document's aspect ratio, but scale it so that it fits neatly inside the viewport. | ||
| * <p> | ||
| * The document will be positioned at the top of tall and narrow viewports, and at the centre of | ||
| * short and wide viewports. | ||
| * <p> | ||
| * Equivalent to <code>preserveAspectRatio="xMidYMin meet"</code> in an SVG. | ||
| */ | ||
| @SuppressWarnings("unused") | ||
| public static final PreserveAspectRatio TOP = new PreserveAspectRatio(Alignment.xMidYMin, Scale.meet); | ||
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| /** | ||
| * Keep the document's aspect ratio, but scale it so that it fits neatly inside the viewport. | ||
| * <p> | ||
| * The document will be positioned at the bottom of tall and narrow viewports, and at the centre of | ||
| * short and wide viewports. | ||
| * <p> | ||
| * Equivalent to <code>preserveAspectRatio="xMidYMax meet"</code> in an SVG. | ||
| */ | ||
| @SuppressWarnings("unused") | ||
| public static final PreserveAspectRatio BOTTOM = new PreserveAspectRatio(Alignment.xMidYMax, Scale.meet); | ||
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| /** | ||
| * Keep the document's aspect ratio, but scale it so that it fills the entire viewport. | ||
| * This may result in some of the document falling outside the viewport. | ||
| * <p> | ||
| * The document will be positioned so that the centre of the document will always be visible, | ||
| * but the edges of the document may not. | ||
| * <p> | ||
| * Equivalent to <code>preserveAspectRatio="xMidYMid slice"</code> in an SVG. | ||
| */ | ||
| @SuppressWarnings("unused") | ||
| public static final PreserveAspectRatio FULLSCREEN = new PreserveAspectRatio(Alignment.xMidYMid, Scale.slice); | ||
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| /** | ||
| * Keep the document's aspect ratio, but scale it so that it fills the entire viewport. | ||
| * This may result in some of the document falling outside the viewport. | ||
| * <p> | ||
| * The document will be positioned so that the top left of the document will always be visible, | ||
| * but the right hand or bottom edge may not. | ||
| * <p> | ||
| * Equivalent to <code>preserveAspectRatio="xMinYMin slice"</code> in an SVG. | ||
| */ | ||
| @SuppressWarnings("unused") | ||
| public static final PreserveAspectRatio FULLSCREEN_START = new PreserveAspectRatio(Alignment.xMinYMin, Scale.slice); | ||
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| /** | ||
| * Determines how the document is to me positioned relative to the viewport (normally the canvas). | ||
| * <p> | ||
| * For the value {@code none}, the document is stretched to fit the viewport dimensions. For all | ||
| * other values, the aspect ratio of the document is kept the same but the document is scaled to | ||
| * fit the viewport. | ||
| * @since 1.2.0 | ||
| */ | ||
| public enum Alignment | ||
| { | ||
| /** Document is stretched to fit both the width and height of the viewport. When using this Alignment value, the value of Scale is not used and will be ignored. */ | ||
| none, | ||
| /** Document is positioned at the top left of the viewport. */ | ||
| xMinYMin, | ||
| /** Document is positioned at the centre top of the viewport. */ | ||
| xMidYMin, | ||
| /** Document is positioned at the top right of the viewport. */ | ||
| xMaxYMin, | ||
| /** Document is positioned at the middle left of the viewport. */ | ||
| xMinYMid, | ||
| /** Document is centred in the viewport both vertically and horizontally. */ | ||
| xMidYMid, | ||
| /** Document is positioned at the middle right of the viewport. */ | ||
| xMaxYMid, | ||
| /** Document is positioned at the bottom left of the viewport. */ | ||
| xMinYMax, | ||
| /** Document is positioned at the bottom centre of the viewport. */ | ||
| xMidYMax, | ||
| /** Document is positioned at the bottom right of the viewport. */ | ||
| xMaxYMax | ||
| } | ||
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| /** | ||
| * Determine whether the scaled document fills the viewport entirely or is scaled to | ||
| * fill the viewport without overflowing. | ||
| * @since 1.2.0 | ||
| */ | ||
| public enum Scale | ||
| { | ||
| /** | ||
| * The document is scaled so that it is as large as possible without overflowing the viewport. | ||
| * There may be blank areas on one or more sides of the document. | ||
| */ | ||
| meet, | ||
| /** | ||
| * The document is scaled so that entirely fills the viewport. That means that some of the | ||
| * document may fall outside the viewport and will not be rendered. | ||
| */ | ||
| slice | ||
| } | ||
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| static { | ||
| aspectRatioKeywords.put("none", PreserveAspectRatio.Alignment.none); | ||
| aspectRatioKeywords.put("xMinYMin", PreserveAspectRatio.Alignment.xMinYMin); | ||
| aspectRatioKeywords.put("xMidYMin", PreserveAspectRatio.Alignment.xMidYMin); | ||
| aspectRatioKeywords.put("xMaxYMin", PreserveAspectRatio.Alignment.xMaxYMin); | ||
| aspectRatioKeywords.put("xMinYMid", PreserveAspectRatio.Alignment.xMinYMid); | ||
| aspectRatioKeywords.put("xMidYMid", PreserveAspectRatio.Alignment.xMidYMid); | ||
| aspectRatioKeywords.put("xMaxYMid", PreserveAspectRatio.Alignment.xMaxYMid); | ||
| aspectRatioKeywords.put("xMinYMax", PreserveAspectRatio.Alignment.xMinYMax); | ||
| aspectRatioKeywords.put("xMidYMax", PreserveAspectRatio.Alignment.xMidYMax); | ||
| aspectRatioKeywords.put("xMaxYMax", PreserveAspectRatio.Alignment.xMaxYMax); | ||
| } | ||
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| /* | ||
| * Private constructor | ||
| */ | ||
| PreserveAspectRatio(Alignment alignment, Scale scale) | ||
| { | ||
| this.alignment = alignment; | ||
| this.scale = scale; | ||
| } | ||
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| /** | ||
| * Parse the given SVG <code>preserveAspectRation</code> attribute value and return an equivalent | ||
| * instance of this class. | ||
| * @param value a string in the same format as an SVG {@code preserveAspectRatio} attribute | ||
| * @return a instance of this class | ||
| */ | ||
| public static PreserveAspectRatio of(String value) | ||
| { | ||
| try { | ||
| return parsePreserveAspectRatio(value); | ||
| } catch (SVGParseException e) { | ||
| throw new IllegalArgumentException(e.getMessage()); | ||
| } | ||
| } | ||
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| /** | ||
| * Returns the alignment value of this instance. | ||
| * @return the alignment | ||
| */ | ||
| @SuppressWarnings("WeakerAccess") | ||
| public Alignment getAlignment() | ||
| { | ||
| return alignment; | ||
| } | ||
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| /** | ||
| * Returns the scale value of this instance. | ||
| * @return the scale | ||
| */ | ||
| @SuppressWarnings("WeakerAccess") | ||
| public Scale getScale() | ||
| { | ||
| return scale; | ||
| } | ||
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| @Override | ||
| public boolean equals(Object obj) | ||
| { | ||
| if (this == obj) | ||
| return true; | ||
| if (obj == null) | ||
| return false; | ||
| if (getClass() != obj.getClass()) | ||
| return false; | ||
| PreserveAspectRatio other = (PreserveAspectRatio) obj; | ||
| return (alignment == other.alignment && scale == other.scale); | ||
| } | ||
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| @Override | ||
| public String toString() | ||
| { | ||
| return alignment + " " + scale; | ||
| } | ||
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| private static PreserveAspectRatio parsePreserveAspectRatio(String val) throws SVGParseException | ||
| { | ||
| TextScanner scan = new TextScanner(val); | ||
| scan.skipWhitespace(); | ||
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| String word = scan.nextToken(); | ||
| if ("defer".equals(word)) { // Ignore defer keyword | ||
| scan.skipWhitespace(); | ||
| word = scan.nextToken(); | ||
| } | ||
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| PreserveAspectRatio.Alignment align = aspectRatioKeywords.get(word); | ||
| PreserveAspectRatio.Scale scale = null; | ||
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| scan.skipWhitespace(); | ||
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| if (!scan.empty()) { | ||
| String meetOrSlice = scan.nextToken(); | ||
| switch (meetOrSlice) { | ||
| case "meet": | ||
| scale = PreserveAspectRatio.Scale.meet; break; | ||
| case "slice": | ||
| scale = PreserveAspectRatio.Scale.slice; break; | ||
| default: | ||
| throw new SVGParseException("Invalid preserveAspectRatio definition: " + val); | ||
| } | ||
| } | ||
| return new PreserveAspectRatio(align, scale); | ||
| } | ||
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| } |
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