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Add support for CSS font-weight + sample app for testing fonts
Resolves #1862
This commit is contained in:
Rossen Hristov
@ -1,62 +1,178 @@
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import { View } from "ui/core/view";
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import { EventData } from "data/observable";
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import { LayoutBase } from "ui/layouts/layout-base";
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import { Page, NavigatedData } from "ui/page";
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import { StackLayout } from "ui/layouts/stack-layout";
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import { ScrollView } from "ui/scroll-view";
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import { Label } from "ui/label";
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import { TextField } from "ui/text-field";
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import { TextView } from "ui/text-view";
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import { Button } from "ui/button";
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import { FontStyle, FontWeight } from "ui/enums";
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import typeUtils = require("utils/types");
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import { Color } from "color";
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import * as font from "ui/styling/font";
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const fontFamilies = ["system", "sans-serif", "serif", "monospace"];
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const fontWeights = [FontWeight.normal, FontWeight.bold];
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const fontStyles = [FontStyle.normal, FontStyle.italic];
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const genericFontFamilies = [
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"system",
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"sans-serif",
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"serif",
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"monospace",
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];
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var fontFamilies = [];
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var fontNames = [];
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const embeddedFontNames = [
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"Entypo",
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"EvilIcons",
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"FontAwesome",
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"Ionicons",
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"Material-Design-Iconic-Font",
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"MaterialIcons",
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];
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const fontStyles = [
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FontStyle.normal,
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FontStyle.italic
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];
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const fontWeights = [
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FontWeight.thin,
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FontWeight.extraLight,
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FontWeight.light,
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FontWeight.normal,
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FontWeight.medium,
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FontWeight.semiBold,
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FontWeight.bold,
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FontWeight.extraBold,
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FontWeight.black,
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];
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export function onStackLayoutLoaded(args: EventData) {
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var layout = <LayoutBase>args.object;
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_generateViews(() => { return new Label(); }, layout);
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_generateViews(() => { return new TextField(); }, layout);
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_generateViews(() => { return new TextView(); }, layout);
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_generateViews(() => { return new Button(); }, layout);
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var green = new Color("Green");
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var red = new Color("Red");
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var white = new Color("White");
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var black = new Color("Black");
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var compareIgnoreCase = function (a, b) {
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return a.toLowerCase().localeCompare(b.toLowerCase());
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};
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if (font.ios) {
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for (var f = 0; f < embeddedFontNames.length; f++) {
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font.ios.registerFont(`fonts/${embeddedFontNames[f]}.ttf`);
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}
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function _generateViews(factory: () => View, layout: LayoutBase) {
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for (var f = 0; f < fontFamilies.length; f++) {
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for (var w = 0; w < fontWeights.length; w++) {
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var font_internal = <any>font;
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font_internal.ensureSystemFontSets();
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(<Set<string>>font_internal.systemFontFamilies).forEach(f => fontFamilies.push(f));
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fontFamilies = fontFamilies.sort(compareIgnoreCase);
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(<Set<string>>font_internal.systemFonts).forEach(f => fontNames.push(f));
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fontNames = fontNames.sort(compareIgnoreCase);
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}
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export function onPageLoaded(args: NavigatedData) {
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var page = <Page>args.object;
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var scrollView = new ScrollView();
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var stackLayout = new StackLayout();
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generateLabels(stackLayout);
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scrollView.content = stackLayout;
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page.content = scrollView;
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}
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function generateLabels(layout: StackLayout) {
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layout.addChild(prepareTitle("Generic Font Families", 24));
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for (var f = 0; f < genericFontFamilies.length; f++) {
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layout.addChild(prepareTitle(genericFontFamilies[f], 20));
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for (var s = 0; s < fontStyles.length; s++) {
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var view = factory();
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var css = `font-family: ${fontFamilies[f]}; font-weight: ${fontWeights[w]}; font-style: ${fontStyles[s]};`;
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(<any>view).text = `${typeUtils.getClass(view)} ${css}`;
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(<any>view).textWrap = true;
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view.style.textAlignment = "left";
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view.setInlineStyle(css);
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view.margin = "1 0";
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view.borderWidth = 1;
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view.height = 75;
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view.color = new Color("Black");
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view.backgroundColor = new Color("LightGray");
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view.on("loaded", args => {
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(<any>view).text += _getFontInfo(view);
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});
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for (var w = 0; w < fontWeights.length; w++) {
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var view = prepareLabel(genericFontFamilies[f], fontStyles[s], fontWeights[w]);
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layout.addChild(view);
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}
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}
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}
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if (fontFamilies.length > 0)
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{
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layout.addChild(prepareTitle("Font Families", 24));
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}
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for (var f = 0; f < fontFamilies.length; f++) {
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layout.addChild(prepareTitle(fontFamilies[f], 20));
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for (var s = 0; s < fontStyles.length; s++) {
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for (var w = 0; w < fontWeights.length; w++) {
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var view = prepareLabel(fontFamilies[f], fontStyles[s], fontWeights[w]);
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layout.addChild(view);
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}
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}
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}
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function _getFontInfo(view: View): string {
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if (fontNames.length > 0) {
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layout.addChild(prepareTitle("Phone Fonts", 24));
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}
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for (var f = 0; f < fontNames.length; f++) {
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var view = prepareLabel(fontNames[f], "normal", "normal");
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layout.addChild(view);
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}
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if (embeddedFontNames.length > 0) {
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layout.addChild(prepareTitle("Embedded Fonts", 24));
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}
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for (var f = 0; f < embeddedFontNames.length; f++) {
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var view = prepareLabel(embeddedFontNames[f], "normal", "normal");
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layout.addChild(view);
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}
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}
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function prepareTitle(text: string, fontSize: number) {
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var title = new Label();
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title.text = text;
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title.height = 100;
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title.backgroundColor = black;
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title.color = white;
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title.fontSize = fontSize;
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title.style.fontStyle = "italic";
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title.borderWidth = 1;
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title.borderColor = white;
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title.textAlignment = "center";
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return title;
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}
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function prepareLabel(fontFamily: string, fontStyle: string, fontWeight: string): View {
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var label = new Label();
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label["font-family"] = fontFamily;
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var fontFamilyCss = `font-family: ${fontFamily}; `;
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var fontStyleCss = fontStyle !== FontStyle.normal ? `font-style: ${fontStyle}; ` : "";
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var fontWeightCss = fontWeight !== FontWeight.normal ? `font-weight: ${fontWeight}; ` : "";
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var css = `${fontFamilyCss}${fontStyleCss}${fontWeightCss}`;
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label.text = `${typeUtils.getClass(label) } {${css}};`;
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label.textWrap = true;
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label.style.textAlignment = "left";
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label.borderWidth = 1;
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label.borderColor = black;
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label.style.padding = "2";
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label.setInlineStyle(css);
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label.on("loaded", args => {
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var sender = <Label>args.object;
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if (sender.ios) {
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var uiFont = _getUIFont(label);
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sender.text += `\niOS Font: ${uiFont.fontName};`;
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if (genericFontFamilies.indexOf(fontFamily) !== -1) {
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return;
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}
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if (uiFont.fontName.replace(" ", "").indexOf((<string>sender["font-family"]).replace(" ", "")) !== -1) {
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sender.color = green;
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}
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else {
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sender.color = red;
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}
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}
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});
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if (fontFamily === "FontAwesome") {
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label.text += "\uF17B\uF10B";
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}
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return label;
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}
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function _getUIFont(view: any): UIFont {
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if (view.ios) {
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var uiFont: UIFont;
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if (view.ios instanceof UIButton) {
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uiFont = view.ios.titleLabel.font;
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return view.ios.titleLabel.font;
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}
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else if (view.ios.font) {
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uiFont = view.ios.font;
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return view.ios.font;
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}
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return ` ${uiFont.fontName} ${uiFont.pointSize}pt.`;
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}
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return "";
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}
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@ -1,5 +1,3 @@
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<Page xmlns="http://schemas.nativescript.org/tns.xsd" >
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<ScrollView>
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<StackLayout loaded="onStackLayoutLoaded"/>
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</ScrollView>
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<Page xmlns="http://schemas.nativescript.org/tns.xsd"
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loaded="onPageLoaded">
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</Page>
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39
ui/enums/enums.d.ts
vendored
39
ui/enums/enums.d.ts
vendored
@ -485,14 +485,49 @@
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*/
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export module FontWeight {
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/**
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* Normal font weight.
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* Thin font weight. CSS font-weight 100.
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*/
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export var thin: string;
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/**
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* Extra-light / Ultra-light font weight. CSS font-weight 200.
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*/
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export var extraLight: string;
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/**
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* Light font weight. CSS font-weight 300.
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*/
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export var light: string;
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/**
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* Normal font weight. CSS font-weight 400.
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*/
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export var normal: string;
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/**
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* Bold font weight.
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* Medium font weight. CSS font-weight 500.
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*/
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export var medium: string;
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/**
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* Semi-bold / Demi-bold font weight. CSS font-weight 600.
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*/
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export var semiBold: string;
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/**
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* Bold font weight. CSS font-weight 700.
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*/
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export var bold: string;
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/**
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* Extra-bold / Ultra-bold font weight. CSS font-weight 800.
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*/
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export var extraBold: string;
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/**
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* Black font weight. CSS font-weight 900.
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*/
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export var black: string;
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}
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/**
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@ -146,8 +146,15 @@ export module FontStyle {
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}
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export module FontWeight {
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export var normal: string = "normal";
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export var bold: string = "bold";
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export var thin: string = "100";
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export var extraLight: string = "200";
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export var light: string = "300";
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export var normal: string = "normal"; // 400
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export var medium: string = "500";
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export var semiBold: string = "600";
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export var bold: string = "bold"; // 700
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export var extraBold: string = "800";
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export var black: string = "900";
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}
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export module BackgroundRepeat {
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@ -39,14 +39,15 @@ export class Font implements definitios.Font {
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}
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get isBold(): boolean {
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return this._fontWeight.toLowerCase() === enums.FontWeight.bold;;
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return this._fontWeight.toLowerCase() === enums.FontWeight.bold
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|| this._fontWeight.toLowerCase() === "700";
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}
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set isBold(value: boolean) {
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throw new Error("isBold is read-only");
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}
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get isItalic(): boolean {
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return this._fontStyle.toLowerCase() === enums.FontStyle.italic;;
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return this._fontStyle.toLowerCase() === enums.FontStyle.italic;
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}
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set isItalic(value: boolean) {
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throw new Error("isItalic is read-only");
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@ -135,8 +136,21 @@ export module genericFontFamilies {
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var styles = new Set();
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["italic", "oblique"].forEach((val, i, a) => styles.add(val));
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// http://www.w3schools.com/cssref/pr_font_weight.asp
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//- normal(same as 400)
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//- bold(same as 700)
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//- 100(Thin) (API16 -thin)
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//- 200(Extra Light / Ultra Light) (API16 -light)
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//- 300(Light) (API16 -light)
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//- 400(Normal)
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//- 500(Medium) (API21 -medium)
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//- 600(Semi Bold / Demi Bold) (API21 -medium)
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//- 700(Bold) (API16 -bold)
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//- 800(Extra Bold / Ultra Bold) (API16 -bold)
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//- 900(Black / Heavy) (API21 -black)
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var weights = new Set();
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["bold", "bolder", "lighter", "100", "200", "300", "400", "500", "600", "700", "800", "900"].forEach((val, i, a) => weights.add(val));
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["normal", "bold", "100", "200", "300", "400", "500", "600", "700", "800", "900"].forEach((val, i, a) => weights.add(val));
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interface ParsedFont {
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fontStyle?: string;
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@ -64,62 +64,13 @@ export class Font extends common.Font {
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public getAndroidTypeface(): android.graphics.Typeface {
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if (!this._typeface) {
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var style: number = 0;
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if (this.isBold) {
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style |= android.graphics.Typeface.BOLD;
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this._typeface = createTypeface(this);
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}
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if (this.isItalic) {
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style |= android.graphics.Typeface.ITALIC;
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}
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var typeFace = this.getTypeFace(this.fontFamily);
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this._typeface = android.graphics.Typeface.create(typeFace, style);
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}
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return this._typeface;
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}
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private getTypeFace(fontFamily: string): android.graphics.Typeface {
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var fonts = common.parseFontFamily(fontFamily);
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var result = null;
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if (fonts.length === 0) {
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return null;
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}
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for (var i = 0; i < fonts.length; i++) {
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switch (fonts[i].toLowerCase()) {
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case common.genericFontFamilies.serif:
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result = android.graphics.Typeface.SERIF;
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break;
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case common.genericFontFamilies.sansSerif:
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result = android.graphics.Typeface.SANS_SERIF;
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break;
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case common.genericFontFamilies.monospace:
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result = android.graphics.Typeface.MONOSPACE;
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break;
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case common.genericFontFamilies.system:
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result = android.graphics.Typeface.DEFAULT;
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break;
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default:
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result = this.loadFontFromFile(fonts[i]);
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break;
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}
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if (result) {
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return result;
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}
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}
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return null;
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}
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private loadFontFromFile(fontFamily: string): android.graphics.Typeface {
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function loadFontFromFile(fontFamily: string): android.graphics.Typeface {
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ensureApplication();
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appAssets = appAssets || application.android.context.getAssets();
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@ -162,4 +113,74 @@ export class Font extends common.Font {
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return result;
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}
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function createTypeface(font: Font): android.graphics.Typeface {
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//http://stackoverflow.com/questions/19691530/valid-values-for-androidfontfamily-and-what-they-map-to
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|
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var fontStyle = 0;
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if (font.isBold) {
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fontStyle |= android.graphics.Typeface.BOLD;
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}
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if (font.isItalic) {
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fontStyle |= android.graphics.Typeface.ITALIC;
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}
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var fonts = common.parseFontFamily(font.fontFamily);
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var result = null;
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if (fonts.length === 0) {
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return null;
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}
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for (var i = 0; i < fonts.length; i++) {
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switch (fonts[i].toLowerCase()) {
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case common.genericFontFamilies.serif:
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result = android.graphics.Typeface.create("serif" + getFontWeightSuffix(font.fontWeight), fontStyle);
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break;
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case common.genericFontFamilies.sansSerif:
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case common.genericFontFamilies.system:
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result = android.graphics.Typeface.create("sans-serif" + getFontWeightSuffix(font.fontWeight), fontStyle);
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break;
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case common.genericFontFamilies.monospace:
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result = android.graphics.Typeface.create("monospace" + getFontWeightSuffix(font.fontWeight), fontStyle);
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break;
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|
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default:
|
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result = loadFontFromFile(fonts[i]);
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break;
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}
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if (result) {
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return result;
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||||
}
|
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}
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||||
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return null;
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}
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function getFontWeightSuffix(fontWeight: string): string {
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switch (fontWeight) {
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case enums.FontWeight.thin:
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return android.os.Build.VERSION.SDK_INT >= 16 ? "-thin" : "";
|
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case enums.FontWeight.extraLight:
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case enums.FontWeight.light:
|
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return android.os.Build.VERSION.SDK_INT >= 16 ? "-light" : "";
|
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case enums.FontWeight.normal:
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case "400":
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case undefined:
|
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case null:
|
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return "";
|
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case enums.FontWeight.medium:
|
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case enums.FontWeight.semiBold:
|
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return android.os.Build.VERSION.SDK_INT >= 21 ? "-medium" : "";
|
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case enums.FontWeight.bold:
|
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case "700":
|
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case enums.FontWeight.extraBold:
|
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return "";
|
||||
case enums.FontWeight.black:
|
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return android.os.Build.VERSION.SDK_INT >= 21 ? "-black" : "";
|
||||
default:
|
||||
throw new Error(`Invalid font weight: "${fontWeight}"`);
|
||||
}
|
||||
}
|
||||
|
||||
@ -14,42 +14,7 @@ export class Font extends common.Font {
|
||||
|
||||
public getUIFont(defaultFont: UIFont): UIFont {
|
||||
if (!this._uiFont) {
|
||||
var size = this.fontSize || defaultFont.pointSize;
|
||||
|
||||
var symbolicTraits: number = 0;
|
||||
if (this.isBold) {
|
||||
symbolicTraits |= UIFontDescriptorSymbolicTraits.UIFontDescriptorTraitBold;
|
||||
}
|
||||
if (this.isItalic) {
|
||||
symbolicTraits |= UIFontDescriptorSymbolicTraits.UIFontDescriptorTraitItalic;
|
||||
}
|
||||
|
||||
var descriptor: UIFontDescriptor;
|
||||
switch (this.fontFamily) {
|
||||
|
||||
case common.genericFontFamilies.sansSerif:
|
||||
case common.genericFontFamilies.system:
|
||||
let uiFont = UIFont.systemFontOfSize(size);
|
||||
descriptor = uiFont.fontDescriptor().fontDescriptorWithSymbolicTraits(symbolicTraits);
|
||||
break;
|
||||
|
||||
case common.genericFontFamilies.monospace:
|
||||
if ((<any>UIFont).monospacedDigitSystemFontOfSizeWeight) {// This method is available on iOS 9.0 and later.
|
||||
let uiFont = (<any>UIFont).monospacedDigitSystemFontOfSizeWeight(size, 0);
|
||||
descriptor = uiFont.fontDescriptor().fontDescriptorWithSymbolicTraits(symbolicTraits);
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
if (!descriptor) {
|
||||
descriptor = resolveFontDescriptor(this.fontFamily, symbolicTraits);
|
||||
}
|
||||
|
||||
if (!descriptor) {
|
||||
descriptor = defaultFont.fontDescriptor().fontDescriptorWithSymbolicTraits(symbolicTraits);
|
||||
}
|
||||
|
||||
this._uiFont = UIFont.fontWithDescriptorSize(descriptor, size);
|
||||
this._uiFont = createUIFont(this, defaultFont);
|
||||
}
|
||||
return this._uiFont;
|
||||
}
|
||||
@ -72,11 +37,14 @@ export class Font extends common.Font {
|
||||
}
|
||||
|
||||
var areSystemFontSetsValid: boolean = false;
|
||||
var systemFontFamilies = new Set();
|
||||
var systemFonts = new Set();
|
||||
export var systemFontFamilies = new Set<string>();
|
||||
export var systemFonts = new Set<string>();
|
||||
|
||||
export function ensureSystemFontSets() {
|
||||
if (areSystemFontSetsValid) {
|
||||
return;
|
||||
}
|
||||
|
||||
function assureSystemFontSets() {
|
||||
if (!areSystemFontSetsValid) {
|
||||
var nsFontFamilies = UIFont.familyNames();
|
||||
for (var i = 0; i < nsFontFamilies.count; i++) {
|
||||
var family = nsFontFamilies.objectAtIndex(i);
|
||||
@ -90,53 +58,6 @@ function assureSystemFontSets() {
|
||||
}
|
||||
areSystemFontSetsValid = true;
|
||||
}
|
||||
}
|
||||
|
||||
function resolveFontDescriptor(fontFamilyValue: string, symbolicTraits: number): UIFontDescriptor {
|
||||
var fonts = common.parseFontFamily(fontFamilyValue);
|
||||
var result: UIFontDescriptor = null;
|
||||
if (fonts.length === 0) {
|
||||
return null;
|
||||
}
|
||||
|
||||
assureSystemFontSets();
|
||||
|
||||
for (var i = 0; i < fonts.length; i++) {
|
||||
var fontFamily = getFontFamilyRespectingGenericFonts(fonts[i]);
|
||||
|
||||
if (systemFonts.has(fontFamily)) {
|
||||
// This is an actual font - don't apply symbolic traits
|
||||
result = UIFontDescriptor.fontDescriptorWithNameSize(fontFamily, 0);
|
||||
} else if (systemFontFamilies.has(fontFamily)) {
|
||||
// This is a font family - we should apply symbolic traits if there are such
|
||||
var fontFaceAttributes = [];
|
||||
|
||||
if (!symbolicTraits) {
|
||||
fontFaceAttributes.push("Regular");
|
||||
}
|
||||
else {
|
||||
if (symbolicTraits & UIFontDescriptorSymbolicTraits.UIFontDescriptorTraitBold) {
|
||||
fontFaceAttributes.push("Bold");
|
||||
}
|
||||
if (symbolicTraits & UIFontDescriptorSymbolicTraits.UIFontDescriptorTraitItalic) {
|
||||
fontFaceAttributes.push("Italic");
|
||||
}
|
||||
}
|
||||
|
||||
var fontAttributes = NSMutableDictionary.alloc().init();
|
||||
fontAttributes.setObjectForKey(fontFamily, "NSFontFamilyAttribute");
|
||||
fontAttributes.setObjectForKey(fontFaceAttributes.join(" "), "NSFontFaceAttribute");
|
||||
|
||||
result = UIFontDescriptor.fontDescriptorWithFontAttributes(fontAttributes);
|
||||
}
|
||||
|
||||
if (result) {
|
||||
return result;
|
||||
}
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
const DEFAULT_SERIF = "Times New Roman";
|
||||
const DEFAULT_MONOSPACE = "Courier New";
|
||||
@ -158,6 +79,212 @@ function getFontFamilyRespectingGenericFonts(fontFamily: string): string {
|
||||
}
|
||||
}
|
||||
|
||||
function createUIFont(font: Font, defaultFont: UIFont) {
|
||||
var size = font.fontSize || defaultFont.pointSize;
|
||||
var descriptor: UIFontDescriptor;
|
||||
|
||||
var symbolicTraits: number = 0;
|
||||
if (font.isBold) {
|
||||
symbolicTraits |= UIFontDescriptorSymbolicTraits.UIFontDescriptorTraitBold;
|
||||
}
|
||||
if (font.isItalic) {
|
||||
symbolicTraits |= UIFontDescriptorSymbolicTraits.UIFontDescriptorTraitItalic;
|
||||
}
|
||||
|
||||
descriptor = tryResolveWithSystemFont(font, size, symbolicTraits);
|
||||
|
||||
if (!descriptor) {
|
||||
descriptor = tryResolveByFamily(font);
|
||||
}
|
||||
|
||||
if (!descriptor) {
|
||||
descriptor = defaultFont.fontDescriptor().fontDescriptorWithSymbolicTraits(symbolicTraits);
|
||||
}
|
||||
|
||||
return UIFont.fontWithDescriptorSize(descriptor, size);
|
||||
}
|
||||
|
||||
function tryResolveWithSystemFont(font: Font, size: number, symbolicTraits: number): UIFontDescriptor {
|
||||
var systemFont: UIFont;
|
||||
switch (font.fontFamily) {
|
||||
case common.genericFontFamilies.sansSerif:
|
||||
case common.genericFontFamilies.system:
|
||||
if ((<any>UIFont).systemFontOfSizeWeight) {// This method is available on iOS 8.2 and later.
|
||||
systemFont = (<any>UIFont).systemFontOfSizeWeight(size, getiOSFontWeight(font.fontWeight));
|
||||
}
|
||||
else {
|
||||
systemFont = UIFont.systemFontOfSize(size);
|
||||
}
|
||||
result = systemFont.fontDescriptor().fontDescriptorWithSymbolicTraits(symbolicTraits);
|
||||
break;
|
||||
|
||||
case common.genericFontFamilies.monospace:
|
||||
if ((<any>UIFont).monospacedDigitSystemFontOfSizeWeight) {// This method is available on iOS 9.0 and later.
|
||||
systemFont = (<any>UIFont).monospacedDigitSystemFontOfSizeWeight(size, getiOSFontWeight(font.fontWeight));
|
||||
result = systemFont.fontDescriptor().fontDescriptorWithSymbolicTraits(symbolicTraits);
|
||||
}
|
||||
break;
|
||||
}
|
||||
|
||||
if (systemFont) {
|
||||
var result = systemFont.fontDescriptor().fontDescriptorWithSymbolicTraits(symbolicTraits);
|
||||
return result;
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
function tryResolveByFamily(font: Font): UIFontDescriptor {
|
||||
var fonts = common.parseFontFamily(font.fontFamily);
|
||||
var result: UIFontDescriptor = null;
|
||||
if (fonts.length === 0) {
|
||||
return null;
|
||||
}
|
||||
|
||||
ensureSystemFontSets();
|
||||
|
||||
for (var i = 0; i < fonts.length; i++) {
|
||||
var fontFamily = getFontFamilyRespectingGenericFonts(fonts[i]);
|
||||
var fontFace = getiOSFontFace(fontFamily, font.fontWeight, font.isItalic);
|
||||
if (systemFonts.has(fontFamily) && !fontFace) { // This is an actual font like `HelveticaNeue-UltraLightItalic` - don't apply font face attribute
|
||||
result = UIFontDescriptor.fontDescriptorWithNameSize(fontFamily, 0);
|
||||
}
|
||||
else if (systemFontFamilies.has(fontFamily)) { // This is a font family like `Helvetica Neue` - apply font face attribute
|
||||
result = createFontDescriptor(fontFamily, fontFace);
|
||||
}
|
||||
|
||||
if (result) {
|
||||
return result;
|
||||
}
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
function createFontDescriptor(fontFamily: string, fontFace: string): UIFontDescriptor {
|
||||
var fontAttributes = NSMutableDictionary.alloc().init();
|
||||
fontAttributes.setObjectForKey(fontFamily, "NSFontFamilyAttribute");
|
||||
if (fontFace) {
|
||||
fontAttributes.setObjectForKey(fontFace, "NSFontFaceAttribute");
|
||||
}
|
||||
return UIFontDescriptor.fontDescriptorWithFontAttributes(fontAttributes);
|
||||
}
|
||||
|
||||
// Available in iOS 8.2 and later.
|
||||
declare var UIFontWeightThin: number; //0.8
|
||||
declare var UIFontWeightUltraLight: number; //0.6
|
||||
declare var UIFontWeightLight: number; //0.4
|
||||
declare var UIFontWeightRegular: number; //0
|
||||
declare var UIFontWeightMedium: number; //0.23
|
||||
declare var UIFontWeightSemibold: number; //0.3
|
||||
declare var UIFontWeightBold: number; //0.4
|
||||
declare var UIFontWeightHeavy: number; //0.56
|
||||
declare var UIFontWeightBlack: number; //0.62
|
||||
function getiOSFontWeight(fontWeight: string): number {
|
||||
if (!(<any>UIFont).systemFontOfSizeWeight) {
|
||||
throw new Error("Font weight is available in iOS 8.2 and later.");
|
||||
}
|
||||
|
||||
switch (fontWeight) {
|
||||
case enums.FontWeight.thin:
|
||||
return UIFontWeightThin;
|
||||
case enums.FontWeight.extraLight:
|
||||
return UIFontWeightUltraLight;
|
||||
case enums.FontWeight.light:
|
||||
return UIFontWeightLight;
|
||||
case enums.FontWeight.normal:
|
||||
case "400":
|
||||
case undefined:
|
||||
case null:
|
||||
return UIFontWeightRegular;
|
||||
case enums.FontWeight.medium:
|
||||
return UIFontWeightMedium;
|
||||
case enums.FontWeight.semiBold:
|
||||
return UIFontWeightSemibold;
|
||||
case enums.FontWeight.bold:
|
||||
case "700":
|
||||
return UIFontWeightBold;
|
||||
case enums.FontWeight.extraBold:
|
||||
return UIFontWeightHeavy;
|
||||
case enums.FontWeight.black:
|
||||
return UIFontWeightBlack;
|
||||
default:
|
||||
throw new Error(`Invalid font weight: "${fontWeight}"`);
|
||||
}
|
||||
}
|
||||
|
||||
function combineWeightStringWithItalic(weight: string, isItalic: boolean) {
|
||||
if (!isItalic) {
|
||||
return weight;
|
||||
}
|
||||
|
||||
if (!weight) {
|
||||
return "Italic";
|
||||
}
|
||||
|
||||
return weight + " Italic";
|
||||
}
|
||||
|
||||
function canLoadFont(fontFamily: string, fontFace: string) {
|
||||
var trialDescriptor = createFontDescriptor(fontFamily, fontFace);
|
||||
var trialFont = UIFont.fontWithDescriptorSize(trialDescriptor, 0);
|
||||
return trialFont.familyName === fontFamily;
|
||||
}
|
||||
|
||||
function findCorrectWeightString(fontFamily: string, weightStringAlternatives: Array<string>, isItalic: boolean) {
|
||||
var i = 0;
|
||||
let length = weightStringAlternatives.length;
|
||||
for (; i < length; i++) {
|
||||
var possibleFontFace = combineWeightStringWithItalic(weightStringAlternatives[i], isItalic);
|
||||
if (canLoadFont(fontFamily, possibleFontFace)) {
|
||||
return weightStringAlternatives[i];
|
||||
}
|
||||
}
|
||||
return weightStringAlternatives[0];
|
||||
}
|
||||
|
||||
function getiOSFontFace(fontFamily: string, fontWeight: string, isItalic: boolean): string {
|
||||
// ... with a lot of fuzzy logic and artificial intelligence thanks to the lack of font naming standards.
|
||||
var weight: string;
|
||||
switch (fontWeight) {
|
||||
case enums.FontWeight.thin:
|
||||
weight = "Thin";
|
||||
break;
|
||||
case enums.FontWeight.extraLight:
|
||||
weight = findCorrectWeightString(fontFamily, ["Ultra Light", "UltraLight", "Extra Light", "ExtraLight", "Ultra light", "Ultralight", "Extra light", "Extralight"], isItalic);
|
||||
break;
|
||||
case enums.FontWeight.light:
|
||||
weight = "Light";
|
||||
break;
|
||||
case enums.FontWeight.normal:
|
||||
case "400":
|
||||
case undefined:
|
||||
case null:
|
||||
weight = ""; // We dont' need to write Regular
|
||||
break;
|
||||
case enums.FontWeight.medium:
|
||||
weight = "Medium";
|
||||
break;
|
||||
case enums.FontWeight.semiBold:
|
||||
weight = findCorrectWeightString(fontFamily, ["Demi Bold", "DemiBold", "Semi Bold", "SemiBold", "Demi bold", "Demibold", "Semi bold", "Semibold"], isItalic);
|
||||
break;
|
||||
case enums.FontWeight.bold:
|
||||
case "700":
|
||||
weight = "Bold";
|
||||
break;
|
||||
case enums.FontWeight.extraBold:
|
||||
weight = findCorrectWeightString(fontFamily, ["Heavy", "Extra Bold", "ExtraBold", "Extra bold", "Extrabold"], isItalic);
|
||||
break;
|
||||
case enums.FontWeight.black:
|
||||
weight = "Black";
|
||||
break;
|
||||
default:
|
||||
throw new Error(`Invalid font weight: "${fontWeight}"`);
|
||||
}
|
||||
|
||||
return combineWeightStringWithItalic(weight, isItalic);
|
||||
}
|
||||
|
||||
export module ios {
|
||||
export function registerFont(fontFile: string) {
|
||||
var filePath = fs.path.join(fs.knownFolders.currentApp().path, "fonts", fontFile);
|
||||
|
||||
@ -423,7 +423,19 @@ function isLetterSpacingValid(value: string): boolean {
|
||||
}
|
||||
|
||||
function isFontWeightValid(value: string): boolean {
|
||||
return value === enums.FontWeight.normal || value === enums.FontWeight.bold;
|
||||
if (!value) {
|
||||
console.trace();
|
||||
}
|
||||
return value === enums.FontWeight.thin
|
||||
|| value === enums.FontWeight.extraLight
|
||||
|| value === enums.FontWeight.light
|
||||
|| value === enums.FontWeight.normal || value === "400"
|
||||
|| value === enums.FontWeight.medium
|
||||
|| value === enums.FontWeight.semiBold
|
||||
|| value === enums.FontWeight.bold || value === "700"
|
||||
|| value === enums.FontWeight.extraBold
|
||||
|| value === enums.FontWeight.black
|
||||
;
|
||||
}
|
||||
|
||||
function isFontStyleValid(value: string): boolean {
|
||||
|
||||
Reference in New Issue
Block a user