"use strict";
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exports.__esModule = true;
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var util_1 = require("../../core/util");
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var textContain = require("../../contain/text");
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var roundRectHelper = require("./roundRect");
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var imageHelper = require("./image");
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var fixShadow_1 = require("./fixShadow");
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var constant_1 = require("../constant");
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var DEFAULT_FONT = textContain.DEFAULT_FONT;
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var VALID_TEXT_ALIGN = { left: true, right: 1, center: 1 };
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var VALID_TEXT_VERTICAL_ALIGN = { top: 1, bottom: 1, middle: 1 };
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var SHADOW_STYLE_COMMON_PROPS = [
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['textShadowBlur', 'shadowBlur', 0],
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['textShadowOffsetX', 'shadowOffsetX', 0],
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['textShadowOffsetY', 'shadowOffsetY', 0],
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['textShadowColor', 'shadowColor', 'transparent']
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];
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var _tmpTextPositionResult = {};
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var _tmpBoxPositionResult = {};
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function normalizeTextStyle(style) {
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normalizeStyle(style);
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util_1.each(style.rich, normalizeStyle);
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return style;
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}
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exports.normalizeTextStyle = normalizeTextStyle;
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function normalizeStyle(style) {
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if (style) {
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style.font = textContain.makeFont(style);
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var textAlign = style.textAlign;
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textAlign === 'middle' && (textAlign = 'center');
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style.textAlign = (textAlign == null || VALID_TEXT_ALIGN[textAlign]) ? textAlign : 'left';
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var textVerticalAlign = style.textVerticalAlign || style.textBaseline;
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textVerticalAlign === 'center' && (textVerticalAlign = 'middle');
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style.textVerticalAlign = (textVerticalAlign == null || VALID_TEXT_VERTICAL_ALIGN[textVerticalAlign]) ? textVerticalAlign : 'top';
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var textPadding = style.textPadding;
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if (textPadding) {
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style.textPadding = util_1.normalizeCssArray(style.textPadding);
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}
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}
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}
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function renderText(hostEl, ctx, text, style, rect, prevEl) {
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style.rich
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? renderRichText(hostEl, ctx, text, style, rect, prevEl)
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: renderPlainText(hostEl, ctx, text, style, rect, prevEl);
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}
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exports.renderText = renderText;
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function renderPlainText(hostEl, ctx, text, style, rect, prevEl) {
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'use strict';
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var needDrawBg = needDrawBackground(style);
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var cachedByMe = ctx.__attrCachedBy === constant_1.ContextCachedBy.PLAIN_TEXT;
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var prevStyle;
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var checkCache = false;
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if (prevEl !== constant_1.WILL_BE_RESTORED) {
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if (prevEl) {
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prevStyle = prevEl.style;
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checkCache = !needDrawBg && cachedByMe && !!prevStyle;
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}
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ctx.__attrCachedBy = needDrawBg ? constant_1.ContextCachedBy.NONE : constant_1.ContextCachedBy.PLAIN_TEXT;
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}
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else if (cachedByMe) {
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ctx.__attrCachedBy = constant_1.ContextCachedBy.NONE;
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}
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var styleFont = style.font || DEFAULT_FONT;
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if (!checkCache || styleFont !== (prevStyle.font || DEFAULT_FONT)) {
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ctx.font = styleFont;
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}
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var computedFont = hostEl.__computedFont;
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if (hostEl.__styleFont !== styleFont) {
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hostEl.__styleFont = styleFont;
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computedFont = hostEl.__computedFont = ctx.font;
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}
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var textPadding = style.textPadding;
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var textLineHeight = style.textLineHeight;
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var contentBlock = hostEl.__textCotentBlock;
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if (!contentBlock || hostEl.__dirtyText) {
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contentBlock = hostEl.__textCotentBlock = textContain.parsePlainText(text, computedFont, textPadding, textLineHeight, style.truncate);
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}
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var outerHeight = contentBlock.outerHeight;
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var textLines = contentBlock.lines;
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var lineHeight = contentBlock.lineHeight;
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var boxPos = getBoxPosition(_tmpBoxPositionResult, hostEl, style, rect);
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var baseX = boxPos.baseX;
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var baseY = boxPos.baseY;
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var textAlign = boxPos.textAlign || 'left';
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var textVerticalAlign = boxPos.textVerticalAlign;
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applyTextRotation(ctx, style, rect, baseX, baseY);
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var boxY = textContain.adjustTextY(baseY, outerHeight, textVerticalAlign);
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var textX = baseX;
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var textY = boxY;
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if (needDrawBg || textPadding) {
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var textWidth = textContain.getWidth(text, computedFont);
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var outerWidth_1 = textWidth;
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textPadding && (outerWidth_1 += textPadding[1] + textPadding[3]);
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var boxX = textContain.adjustTextX(baseX, outerWidth_1, textAlign);
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needDrawBg && drawBackground(hostEl, ctx, style, boxX, boxY, outerWidth_1, outerHeight);
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if (textPadding) {
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textX = getTextXForPadding(baseX, textAlign, textPadding);
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textY += textPadding[0];
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}
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}
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ctx.textAlign = textAlign;
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ctx.textBaseline = 'middle';
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ctx.globalAlpha = style.opacity || 1;
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for (var i = 0; i < SHADOW_STYLE_COMMON_PROPS.length; i++) {
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var propItem = SHADOW_STYLE_COMMON_PROPS[i];
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var styleProp = propItem[0];
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var ctxProp = propItem[1];
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var val = style[styleProp];
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if (!checkCache || val !== prevStyle[styleProp]) {
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ctx[ctxProp] = fixShadow_1["default"](ctx, ctxProp, (val || propItem[2]));
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}
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}
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textY += lineHeight / 2;
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var textStrokeWidth = style.textStrokeWidth;
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var textStrokeWidthPrev = checkCache ? prevStyle.textStrokeWidth : null;
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var strokeWidthChanged = !checkCache || textStrokeWidth !== textStrokeWidthPrev;
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var strokeChanged = !checkCache || strokeWidthChanged || style.textStroke !== prevStyle.textStroke;
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var textStroke = getStroke(style.textStroke, textStrokeWidth);
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var textFill = getFill(style.textFill);
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if (textStroke) {
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if (strokeWidthChanged) {
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ctx.lineWidth = textStrokeWidth;
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}
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if (strokeChanged) {
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ctx.strokeStyle = textStroke;
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}
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}
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if (textFill) {
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if (!checkCache || style.textFill !== prevStyle.textFill) {
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ctx.fillStyle = textFill;
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}
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}
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if (textLines.length === 1) {
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textStroke && ctx.strokeText(textLines[0], textX, textY);
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textFill && ctx.fillText(textLines[0], textX, textY);
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}
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else {
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for (var i = 0; i < textLines.length; i++) {
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textStroke && ctx.strokeText(textLines[i], textX, textY);
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textFill && ctx.fillText(textLines[i], textX, textY);
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textY += lineHeight;
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}
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}
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}
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function renderRichText(hostEl, ctx, text, style, rect, prevEl) {
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if (prevEl !== constant_1.WILL_BE_RESTORED) {
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ctx.__attrCachedBy = constant_1.ContextCachedBy.NONE;
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}
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var contentBlock = hostEl.__textCotentBlock;
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if (!contentBlock || hostEl.__dirtyText) {
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contentBlock = hostEl.__textCotentBlock = textContain.parseRichText(text, style);
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}
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drawRichText(hostEl, ctx, contentBlock, style, rect);
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}
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function drawRichText(hostEl, ctx, contentBlock, style, rect) {
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var contentWidth = contentBlock.width;
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var outerWidth = contentBlock.outerWidth;
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var outerHeight = contentBlock.outerHeight;
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var textPadding = style.textPadding;
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var boxPos = getBoxPosition(_tmpBoxPositionResult, hostEl, style, rect);
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var baseX = boxPos.baseX;
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var baseY = boxPos.baseY;
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var textAlign = boxPos.textAlign;
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var textVerticalAlign = boxPos.textVerticalAlign;
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applyTextRotation(ctx, style, rect, baseX, baseY);
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var boxX = textContain.adjustTextX(baseX, outerWidth, textAlign);
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var boxY = textContain.adjustTextY(baseY, outerHeight, textVerticalAlign);
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var xLeft = boxX;
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var lineTop = boxY;
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if (textPadding) {
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xLeft += textPadding[3];
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lineTop += textPadding[0];
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}
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var xRight = xLeft + contentWidth;
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needDrawBackground(style) && drawBackground(hostEl, ctx, style, boxX, boxY, outerWidth, outerHeight);
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for (var i = 0; i < contentBlock.lines.length; i++) {
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var line = contentBlock.lines[i];
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var tokens = line.tokens;
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var tokenCount = tokens.length;
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var lineHeight = line.lineHeight;
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var usedWidth = line.width;
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var leftIndex = 0;
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var lineXLeft = xLeft;
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var lineXRight = xRight;
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var rightIndex = tokenCount - 1;
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var token = void 0;
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while (leftIndex < tokenCount
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&& (token = tokens[leftIndex], !token.textAlign || token.textAlign === 'left')) {
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placeToken(hostEl, ctx, token, style, lineHeight, lineTop, lineXLeft, 'left');
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usedWidth -= token.width;
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lineXLeft += token.width;
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leftIndex++;
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}
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while (rightIndex >= 0
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&& (token = tokens[rightIndex], token.textAlign === 'right')) {
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placeToken(hostEl, ctx, token, style, lineHeight, lineTop, lineXRight, 'right');
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usedWidth -= token.width;
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lineXRight -= token.width;
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rightIndex--;
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}
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lineXLeft += (contentWidth - (lineXLeft - xLeft) - (xRight - lineXRight) - usedWidth) / 2;
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while (leftIndex <= rightIndex) {
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token = tokens[leftIndex];
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placeToken(hostEl, ctx, token, style, lineHeight, lineTop, lineXLeft + token.width / 2, 'center');
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lineXLeft += token.width;
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leftIndex++;
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}
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lineTop += lineHeight;
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}
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}
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function applyTextRotation(ctx, style, rect, x, y) {
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if (rect && style.textRotation) {
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var origin_1 = style.textOrigin;
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if (origin_1 === 'center') {
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x = rect.width / 2 + rect.x;
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y = rect.height / 2 + rect.y;
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}
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else if (origin_1) {
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x = origin_1[0] + rect.x;
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y = origin_1[1] + rect.y;
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}
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ctx.translate(x, y);
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ctx.rotate(-style.textRotation);
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ctx.translate(-x, -y);
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}
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}
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function placeToken(hostEl, ctx, token, style, lineHeight, lineTop, x, textAlign) {
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var tokenStyle = style.rich[token.styleName] || {};
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tokenStyle.text = token.text;
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var textVerticalAlign = token.textVerticalAlign;
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var y = lineTop + lineHeight / 2;
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if (textVerticalAlign === 'top') {
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y = lineTop + token.height / 2;
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}
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else if (textVerticalAlign === 'bottom') {
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y = lineTop + lineHeight - token.height / 2;
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}
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!token.isLineHolder && needDrawBackground(tokenStyle) && drawBackground(hostEl, ctx, tokenStyle, textAlign === 'right'
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? x - token.width
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: textAlign === 'center'
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? x - token.width / 2
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: x, y - token.height / 2, token.width, token.height);
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var textPadding = token.textPadding;
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if (textPadding) {
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x = getTextXForPadding(x, textAlign, textPadding);
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y -= token.height / 2 - textPadding[2] - token.textHeight / 2;
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}
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setCtx(ctx, 'shadowBlur', util_1.retrieve3(tokenStyle.textShadowBlur, style.textShadowBlur, 0));
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setCtx(ctx, 'shadowColor', tokenStyle.textShadowColor || style.textShadowColor || 'transparent');
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setCtx(ctx, 'shadowOffsetX', util_1.retrieve3(tokenStyle.textShadowOffsetX, style.textShadowOffsetX, 0));
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setCtx(ctx, 'shadowOffsetY', util_1.retrieve3(tokenStyle.textShadowOffsetY, style.textShadowOffsetY, 0));
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setCtx(ctx, 'textAlign', textAlign);
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setCtx(ctx, 'textBaseline', 'middle');
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setCtx(ctx, 'font', token.font || DEFAULT_FONT);
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var textStrokeWidth = util_1.retrieve2(tokenStyle.textStrokeWidth, style.textStrokeWidth);
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var textStroke = getStroke(tokenStyle.textStroke || style.textStroke, textStrokeWidth);
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var textFill = getFill(tokenStyle.textFill || style.textFill);
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if (textStroke) {
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setCtx(ctx, 'lineWidth', textStrokeWidth);
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setCtx(ctx, 'strokeStyle', textStroke);
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ctx.strokeText(token.text, x, y);
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}
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if (textFill) {
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setCtx(ctx, 'fillStyle', textFill);
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ctx.fillText(token.text, x, y);
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}
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}
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function needDrawBackground(style) {
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return !!(style.textBackgroundColor
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|| (style.textBorderWidth && style.textBorderColor));
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}
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function drawBackground(hostEl, ctx, style, x, y, width, height) {
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var textBackgroundColor = style.textBackgroundColor;
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var textBorderWidth = style.textBorderWidth;
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var textBorderColor = style.textBorderColor;
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var isPlainBg = util_1.isString(textBackgroundColor);
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setCtx(ctx, 'shadowBlur', style.textBoxShadowBlur || 0);
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setCtx(ctx, 'shadowColor', style.textBoxShadowColor || 'transparent');
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setCtx(ctx, 'shadowOffsetX', style.textBoxShadowOffsetX || 0);
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setCtx(ctx, 'shadowOffsetY', style.textBoxShadowOffsetY || 0);
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if (isPlainBg || (textBorderWidth && textBorderColor)) {
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ctx.beginPath();
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var textBorderRadius = style.textBorderRadius;
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if (!textBorderRadius) {
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ctx.rect(x, y, width, height);
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}
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else {
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roundRectHelper.buildPath(ctx, {
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x: x, y: y, width: width, height: height, r: textBorderRadius
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});
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}
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ctx.closePath();
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}
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if (isPlainBg) {
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setCtx(ctx, 'fillStyle', textBackgroundColor);
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if (style.fillOpacity != null) {
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var originalGlobalAlpha = ctx.globalAlpha;
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ctx.globalAlpha = style.fillOpacity * style.opacity;
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ctx.fill();
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ctx.globalAlpha = originalGlobalAlpha;
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}
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else {
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ctx.fill();
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}
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}
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else if (textBackgroundColor && textBackgroundColor.image) {
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var image = textBackgroundColor.image;
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image = imageHelper.createOrUpdateImage(image, null, hostEl, onBgImageLoaded, textBackgroundColor);
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if (image && imageHelper.isImageReady(image)) {
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ctx.drawImage(image, x, y, width, height);
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}
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}
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if (textBorderWidth && textBorderColor) {
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setCtx(ctx, 'lineWidth', textBorderWidth);
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setCtx(ctx, 'strokeStyle', textBorderColor);
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if (style.strokeOpacity != null) {
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var originalGlobalAlpha = ctx.globalAlpha;
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ctx.globalAlpha = style.strokeOpacity * style.opacity;
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ctx.stroke();
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ctx.globalAlpha = originalGlobalAlpha;
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}
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else {
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ctx.stroke();
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}
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}
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}
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function onBgImageLoaded(image, textBackgroundColor) {
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textBackgroundColor.image = image;
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}
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function getBoxPosition(out, hostEl, style, rect) {
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var baseX = style.x || 0;
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var baseY = style.y || 0;
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var textAlign = style.textAlign;
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var textVerticalAlign = style.textVerticalAlign;
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if (rect) {
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var textPosition = style.textPosition;
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if (textPosition instanceof Array) {
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baseX = rect.x + parsePercent(textPosition[0], rect.width);
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baseY = rect.y + parsePercent(textPosition[1], rect.height);
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}
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else {
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var res = (hostEl && hostEl.calculateTextPosition)
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? hostEl.calculateTextPosition(_tmpTextPositionResult, style, rect)
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: textContain.calculateTextPosition(_tmpTextPositionResult, style, rect);
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baseX = res.x;
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baseY = res.y;
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textAlign = textAlign || res.textAlign;
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textVerticalAlign = textVerticalAlign || res.textVerticalAlign;
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}
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var textOffset = style.textOffset;
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if (textOffset) {
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baseX += textOffset[0];
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baseY += textOffset[1];
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}
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}
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out = out || {};
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out.baseX = baseX;
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out.baseY = baseY;
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out.textAlign = textAlign;
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out.textVerticalAlign = textVerticalAlign;
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return out;
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}
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exports.getBoxPosition = getBoxPosition;
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function setCtx(ctx, prop, value) {
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ctx[prop] = fixShadow_1["default"](ctx, prop, value);
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return ctx[prop];
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}
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function getStroke(stroke, lineWidth) {
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return (stroke == null || lineWidth <= 0 || stroke === 'transparent' || stroke === 'none')
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? null
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: (stroke.image || stroke.colorStops)
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? '#000'
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: stroke;
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}
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exports.getStroke = getStroke;
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function getFill(fill) {
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return (fill == null || fill === 'none')
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? null
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: (fill.image || fill.colorStops)
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? '#000'
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: fill;
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}
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exports.getFill = getFill;
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function parsePercent(value, maxValue) {
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if (typeof value === 'string') {
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if (value.lastIndexOf('%') >= 0) {
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return parseFloat(value) / 100 * maxValue;
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}
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return parseFloat(value);
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}
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return value;
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}
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exports.parsePercent = parsePercent;
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function getTextXForPadding(x, textAlign, textPadding) {
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return textAlign === 'right'
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? (x - textPadding[1])
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: textAlign === 'center'
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? (x + textPadding[3] / 2 - textPadding[1] / 2)
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: (x + textPadding[3]);
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}
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function needDrawText(text, style) {
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return text != null
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&& !!(text
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|| style.textBackgroundColor
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|| (style.textBorderWidth && style.textBorderColor)
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|| style.textPadding);
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}
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exports.needDrawText = needDrawText;
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//# sourceMappingURL=text.js.map
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