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Работа над избавлением от канваса в сторону верстки дивами

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This commit is contained in:
Book Pauk
2019-01-24 16:16:04 +07:00
parent 132956eabd
commit 6cecc8d8c8
3 changed files with 73 additions and 89 deletions
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8
client/components/Reader/TextPage/DrawHelper.js
View File

@@ -67,5 +67,11 @@ export default class DrawHelper {
}
}
fillText(text, x, y, font) {
/*this.context1.textAlign = 'left';
this.context2.textAlign = 'left';
this.context1.textBaseline = 'bottom';
this.context2.textBaseline = 'bottom';*/
return `<div style="position: absolute; left: ${x}px; top: ${y}px; font: ${font}">${text}</div>`;
}
}

144
client/components/Reader/TextPage/TextPage.vue
View File

@@ -1,15 +1,22 @@
<template>
<div ref="main" class="main" @click.capture="onMouseClick">
<canvas :style="canvasStyle1" ref="canvas1" class="canvas" @mousedown.prevent.stop="onMouseDown" @mouseup.prevent.stop="onMouseUp"
<div v-show="activeCanvas" class="layout">
<div v-html="page1"></div>
</div>
<div v-show="!activeCanvas" class="layout">
<div v-html="page2"></div>
</div>
<!--canvas :style="canvasStyle2" ref="canvas2" class="canvas" @mousedown.prevent.stop="onMouseDown" @mouseup.prevent.stop="onMouseUp"
@wheel.prevent.stop="onMouseWheel"
@touchstart.stop="onTouchStart" @touchend.stop="onTouchEnd" @touchcancel.prevent.stop="onTouchCancel"
oncontextmenu="return false;">
</canvas>
<canvas :style="canvasStyle2" ref="canvas2" class="canvas" @mousedown.prevent.stop="onMouseDown" @mouseup.prevent.stop="onMouseUp"
</canvas-->
<div ref="layoutEvents" class="layout events" @mousedown.prevent.stop="onMouseDown" @mouseup.prevent.stop="onMouseUp"
@wheel.prevent.stop="onMouseWheel"
@touchstart.stop="onTouchStart" @touchend.stop="onTouchEnd" @touchcancel.prevent.stop="onTouchCancel"
oncontextmenu="return false;">
</canvas>
</div>
<canvas ref="offscreenCanvas" style="display: none"></canvas>
</div>
</template>
@@ -33,6 +40,8 @@ export default @Component({
})
class TextPage extends Vue {
activeCanvas = false;
page1 = null;
page2 = null;
lastBook = null;
bookPos = 0;
@@ -68,8 +77,7 @@ class TextPage extends Vue {
}
mounted() {
this.canvas1 = this.$refs.canvas1;
this.canvas2 = this.$refs.canvas2;
this.context = this.$refs.offscreenCanvas.getContext('2d');
}
hex2rgba(hex, alpha = 1) {
@@ -78,36 +86,12 @@ class TextPage extends Vue {
}
async calcDrawProps() {
this.context1 = this.canvas1.getContext('2d');
this.context2 = this.canvas2.getContext('2d');
this.realWidth = this.$refs.main.clientWidth;
this.realHeight = this.$refs.main.clientHeight;
let ratio = window.devicePixelRatio;
if (ratio) {
this.canvas1.width = this.realWidth*ratio;
this.canvas1.height = this.realHeight*ratio;
this.canvas1.style.width = this.$refs.main.clientWidth + 'px';
this.canvas1.style.height = this.$refs.main.clientHeight + 'px';
this.context1.scale(ratio, ratio);
this.$refs.layoutEvents.style.width = this.realWidth + 'px';
this.$refs.layoutEvents.style.height = this.realHeight + 'px';
this.canvas2.width = this.realWidth*ratio;
this.canvas2.height = this.realHeight*ratio;
this.canvas2.style.width = this.$refs.main.clientWidth + 'px';
this.canvas2.style.height = this.$refs.main.clientHeight + 'px';
this.context2.scale(ratio, ratio);
} else {
this.canvas1.width = this.realWidth;
this.canvas1.height = this.realHeight;
this.canvas2.width = this.realWidth;
this.canvas2.height = this.realHeight;
}
this.context1.textAlign = 'left';
this.context2.textAlign = 'left';
this.context1.textBaseline = 'bottom';
this.context2.textBaseline = 'bottom';
this.activeCanvas = false;
this.w = this.realWidth - 2*this.indent;
@@ -120,8 +104,7 @@ class TextPage extends Vue {
this.parsed.w = this.w;// px, ширина текста
this.parsed.font = this.font;
this.parsed.wordWrap = this.wordWrap;
this.parsed.context = this.context1;
this.parsed.fontByStyle = this.fontByStyle;
this.parsed.measureText = this.measureText;
}
this.statusBarColor = this.hex2rgba(this.textColor, this.statusBarColorAlpha);
@@ -137,6 +120,11 @@ class TextPage extends Vue {
this.drawHelper.fontName = this.fontName;
}
measureText(text, style) {// eslint-disable-line no-unused-vars
this.context.font = this.fontByStyle(style);
return this.context.measureText(text).width;
}
async loadFonts() {
let loaded = await Promise.all(this.fontList.map(font => document.fonts.check(font)));
if (loaded.some(r => !r)) {
@@ -213,7 +201,7 @@ class TextPage extends Vue {
await this.loadFonts();
this.draw();
this.refreshTime();
//this.refreshTime();
})();
}
}
@@ -231,22 +219,6 @@ class TextPage extends Vue {
return `${style.italic ? 'italic' : ''} ${style.bold ? 'bold' : ''} ${this.fontSize}px ${this.fontName}`;
}
get context() {
return (this.activeCanvas ? this.context1 : this.context2);
}
get canvas() {
return (this.activeCanvas ? this.canvas1 : this.canvas2);
}
get canvasStyle1() {
return (this.activeCanvas ? {'z-index': 11} : {'z-index': 10});
}
get canvasStyle2() {
return (this.activeCanvas ? {'z-index': 10} : {'z-index': 11});
}
draw(immediate) {
if (this.book && this.bookPos > 0 && this.bookPos >= this.parsed.textLength) {
this.doEnd();
@@ -254,12 +226,15 @@ class TextPage extends Vue {
}
this.activeCanvas = !this.activeCanvas;
const context = this.context;
if (immediate) {
this.drawPage(context, this.bookPos);
immediate = true;
if (immediate) {
if (this.activeCanvas)
this.page1 = this.drawPage(this.bookPos);
else
this.page2 = this.drawPage(this.bookPos);
} else {
if (this.pageChangeDirectionDown && this.pagePrepared && this.bookPos == this.bookPosPrepared) {
/*if (this.pageChangeDirectionDown && this.pagePrepared && this.bookPos == this.bookPosPrepared) {
this.linesDown = this.linesDownNext;
this.linesUp = this.linesUpNext;
this.pagePrepared = false;
@@ -268,7 +243,7 @@ class TextPage extends Vue {
this.drawPage(context, this.bookPos);
this.pagePrepared = false;
this.debouncedPrepareNextPage();
}
}*/
if (this.currentTransition) {
//this.currentTransition
@@ -284,19 +259,19 @@ class TextPage extends Vue {
}
}
drawPage(context, bookPos, nextChangeLines) {
drawPage(bookPos, nextChangeLines) {
if (!this.lastBook)
return;
context.fillStyle = this.backgroundColor;
context.fillRect(0, 0, this.realWidth, this.realHeight);
let out = `<div class="layout" style="width: ${this.realWidth}px; height: ${this.realHeight}px;` +
` color: ${this.textColor}; background-color: ${this.backgroundColor}">`;
if (!this.book || !this.parsed.textLength)
return;
if (!this.book || !this.parsed.textLength) {
out += '</div>';
return out;
}
context.font = this.font;
context.fillStyle = this.textColor;
const spaceWidth = context.measureText(' ').width;
const spaceWidth = this.measureText(' ', {});
const lines = this.parsed.getLines(bookPos, 2*this.pageLineCount);
if (!nextChangeLines) {
@@ -328,13 +303,15 @@ class TextPage extends Vue {
}*/
let indent = this.indent + (line.first ? this.p : 0);
y += this.lineHeight;
let lineText = '';
let center = false;
let centerStyle = {};
for (const part of line.parts) {
lineText += part.text;
center = center || part.style.center;
if (part.style.center)
centerStyle = part.style.center;
}
let filled = false;
@@ -349,13 +326,13 @@ class TextPage extends Vue {
let x = indent;
for (const part of line.parts) {
context.font = this.fontByStyle(part.style);
const font = this.fontByStyle(part.style);
let partWords = part.text.split(' ');
for (let i = 0; i < partWords.length; i++) {
let word = partWords[i];
context.fillText(word, x, y);
x += context.measureText(word).width + (i < partWords.length - 1 ? space : 0);
out += this.drawHelper.fillText(word, x, y, font);
x += this.measureText(word, part.style) + (i < partWords.length - 1 ? space : 0);
}
}
filled = true;
@@ -365,20 +342,24 @@ class TextPage extends Vue {
// просто выводим текст
if (!filled) {
let x = indent;
x = (center ? this.indent + (this.w - context.measureText(lineText).width)/2 : x);
x = (center ? this.indent + (this.w - this.measureText(lineText, centerStyle))/2 : x);
for (const part of line.parts) {
let text = part.text;
context.font = this.fontByStyle(part.style);
context.fillText(text, x, y);
x += context.measureText(text).width;
const font = this.fontByStyle(part.style);
out += this.drawHelper.fillText(text, x, y, font);
x += this.measureText(text, part.style);
}
}
y += this.lineHeight;
}
this.drawStatusBar(context, lines);
out += '</div>';
//this.drawStatusBar(context, lines);
return out;
}
drawStatusBar(context, lines) {
/*drawStatusBar(context, lines) {
if (!lines)
lines = this.linesDown;
@@ -404,7 +385,7 @@ class TextPage extends Vue {
this.timeRefreshing = false;
this.refreshTime();
}
}
}*/
prepareNextPage() {
// подготовка следующей страницы заранее
@@ -622,10 +603,7 @@ class TextPage extends Vue {
onMouseClick(event) {
if (this.showStatusBar && this.book) {
const pointX = event.pageX - this.canvas.offsetLeft;
const pointY = event.pageY - this.canvas.offsetTop;
if (this.checkPointInStatusBar(pointX, pointY)) {
if (this.checkPointInStatusBar(event.offsetX, event.offsetY)) {
window.open(this.meta.url, '_blank');
return false;
}
@@ -695,9 +673,15 @@ class TextPage extends Vue {
position: relative;
}
.canvas {
.layout {
margin: 0;
padding: 0;
position: absolute;
z-index: 10;
}
.events {
z-index: 20;
background-color: rgba(0,0,0,0);
}
</style>