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@ -28,7 +28,7 @@ object ChapterProvider { |
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var visibleHeight = 0 |
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var visibleRight = 0 |
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var visibleBottom = 0 |
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private var lineSpacingExtra = 0f |
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private var lineSpacingExtra = 0 |
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private var paragraphSpacing = 0 |
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var typeface: Typeface = Typeface.SANS_SERIF |
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var titlePaint = TextPaint() |
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@ -51,7 +51,7 @@ object ChapterProvider { |
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val pageLengths = arrayListOf<Int>() |
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val stringBuilder = StringBuilder() |
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var surplusText = content |
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var durY = 0 |
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var durY = 0f |
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textPages.add(TextPage()) |
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while (surplusText.isNotEmpty()) { |
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if (textPages.first().textLines.isEmpty()) { |
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@ -60,7 +60,9 @@ object ChapterProvider { |
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if (end > 0) { |
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val title = surplusText.substring(0, end) |
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surplusText = surplusText.substring(end + 1) |
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durY = joinTitle(title, durY, textPages, pageLines, pageLengths, stringBuilder) |
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durY = setTypeText( |
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title, durY, textPages, pageLines, pageLengths, stringBuilder, true |
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) |
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} |
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} else { |
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//正文 |
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@ -73,7 +75,8 @@ object ChapterProvider { |
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text = surplusText |
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surplusText = "" |
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} |
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durY = joinBody(text, durY, textPages, pageLines, pageLengths, stringBuilder) |
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durY = |
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setTypeText(text, durY, textPages, pageLines, pageLengths, stringBuilder, false) |
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} |
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} |
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textPages.last().height = durY + 20.dp |
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@ -103,116 +106,59 @@ object ChapterProvider { |
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} |
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/** |
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* 标题 |
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* 排版文字 |
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*/ |
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private fun joinTitle( |
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title: String, |
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y: Int, |
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textPages: ArrayList<TextPage>, |
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pageLines: ArrayList<Int>, |
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pageLengths: ArrayList<Int>, |
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stringBuilder: StringBuilder |
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): Int { |
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var durY = y |
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val layout = StaticLayout( |
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title, titlePaint, visibleWidth, |
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Layout.Alignment.ALIGN_NORMAL, 1f, lineSpacingExtra, true |
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) |
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for (lineIndex in 0 until layout.lineCount) { |
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textPages.last().height = durY |
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val textLine = TextLine(isTitle = true) |
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if (durY + layout.getLineBaseline(lineIndex) - layout.getLineTop(lineIndex) |
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+ contentPaint.fontMetrics.descent < visibleHeight |
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) { |
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textPages.last().textLines.add(textLine) |
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durY = durY + layout.getLineBottom(lineIndex) - layout.getLineTop(lineIndex) |
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} else { |
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textPages.last().text = stringBuilder.toString() |
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stringBuilder.clear() |
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pageLines.add(textPages.last().textLines.size) |
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pageLengths.add(textPages.last().text.length) |
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//新页面 |
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durY = layout.getLineBottom(lineIndex) - layout.getLineTop(lineIndex) |
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textPages.add(TextPage()) |
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textPages.last().textLines.add(textLine) |
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} |
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textLine.lineTop = (paddingTop + durY - |
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(layout.getLineBottom(lineIndex) - layout.getLineTop(lineIndex))).toFloat() |
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textLine.lineBase = (paddingTop + durY - |
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(layout.getLineBottom(lineIndex) - layout.getLineBaseline(lineIndex))).toFloat() |
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textLine.lineBottom = textLine.lineBase + contentPaint.fontMetrics.descent |
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val words = |
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title.substring(layout.getLineStart(lineIndex), layout.getLineEnd(lineIndex)) |
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stringBuilder.append(words) |
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textLine.text = words |
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val desiredWidth = layout.getLineWidth(lineIndex) |
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if (lineIndex != layout.lineCount - 1) { |
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addCharsToLineMiddle(textLine, words, titlePaint, desiredWidth, 0f) |
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} else { |
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//最后一行 |
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val x = if (ReadBookConfig.titleCenter) |
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(visibleWidth - layout.getLineWidth(lineIndex)) / 2 |
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else 0f |
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addCharsToLineLast(textLine, words, stringBuilder, titlePaint, x) |
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} |
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} |
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durY += paragraphSpacing |
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return durY |
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} |
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/** |
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* 正文 |
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*/ |
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private fun joinBody( |
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private fun setTypeText( |
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text: String, |
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y: Int, |
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y: Float, |
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textPages: ArrayList<TextPage>, |
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pageLines: ArrayList<Int>, |
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pageLengths: ArrayList<Int>, |
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stringBuilder: StringBuilder |
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): Int { |
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stringBuilder: StringBuilder, |
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isTitle: Boolean |
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): Float { |
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var durY = y |
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val textPaint = if (isTitle) titlePaint else contentPaint |
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val layout = StaticLayout( |
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text, contentPaint, visibleWidth, |
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Layout.Alignment.ALIGN_NORMAL, 1f, lineSpacingExtra, true |
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text, textPaint, visibleWidth, |
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Layout.Alignment.ALIGN_NORMAL, 0f, 0f, true |
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) |
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for (lineIndex in 0 until layout.lineCount) { |
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textPages.last().height = durY |
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val textLine = TextLine() |
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if (durY + layout.getLineBaseline(lineIndex) - layout.getLineTop(lineIndex) |
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+ contentPaint.fontMetrics.descent < visibleHeight |
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) { |
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val textLine = TextLine(isTitle = isTitle) |
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if (durY + textPaint.textHeight < visibleHeight) { |
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textPages.last().textLines.add(textLine) |
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durY = durY + layout.getLineBottom(lineIndex) - layout.getLineTop(lineIndex) |
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durY += textPaint.textHeight + lineSpacingExtra |
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} else { |
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textPages.last().text = stringBuilder.toString() |
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stringBuilder.clear() |
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pageLines.add(textPages.last().textLines.size) |
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pageLengths.add(textPages.last().text.length) |
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//新页面 |
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durY = layout.getLineBottom(lineIndex) - layout.getLineTop(lineIndex) |
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durY = textPaint.textHeight + lineSpacingExtra |
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textPages.add(TextPage()) |
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textPages.last().textLines.add(textLine) |
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} |
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textLine.lineTop = (paddingTop + durY - |
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(layout.getLineBottom(lineIndex) - layout.getLineTop(lineIndex))).toFloat() |
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textLine.lineBase = (paddingTop + durY - |
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(layout.getLineBottom(lineIndex) - layout.getLineBaseline(lineIndex))).toFloat() |
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textLine.lineBottom = textLine.lineBase + contentPaint.fontMetrics.descent |
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textLine.lineBottom = paddingTop + durY - lineSpacingExtra |
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textLine.lineBase = textLine.lineBottom - textPaint.fontMetrics.descent |
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textLine.lineTop = textLine.lineBottom - textPaint.textHeight |
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val words = |
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text.substring(layout.getLineStart(lineIndex), layout.getLineEnd(lineIndex)) |
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stringBuilder.append(words) |
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textLine.text = words |
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val desiredWidth = layout.getLineWidth(lineIndex) |
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if (lineIndex == 0 && layout.lineCount > 1) { |
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if (lineIndex == 0 && layout.lineCount > 1 && !isTitle) { |
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//第一行 |
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addCharsToLineFirst(textLine, words, contentPaint, desiredWidth) |
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addCharsToLineFirst(textLine, words, textPaint, desiredWidth) |
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} else if (lineIndex == layout.lineCount - 1) { |
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//最后一行 |
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addCharsToLineLast(textLine, words, stringBuilder, contentPaint, 0f) |
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val x = if (isTitle && ReadBookConfig.titleCenter) |
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(visibleWidth - layout.getLineWidth(lineIndex)) / 2 |
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else 0f |
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addCharsToLineLast(textLine, words, stringBuilder, textPaint, x) |
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} else { |
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//中间行 |
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addCharsToLineMiddle(textLine, words, contentPaint, desiredWidth, 0f) |
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addCharsToLineMiddle(textLine, words, textPaint, desiredWidth, 0f) |
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} |
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} |
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durY += paragraphSpacing |
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@ -346,7 +292,7 @@ object ChapterProvider { |
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val bold = if (ReadBookConfig.textBold) Typeface.BOLD else Typeface.NORMAL |
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contentPaint.typeface = Typeface.create(typeface, bold) |
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//间距 |
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lineSpacingExtra = ReadBookConfig.lineSpacingExtra.dp.toFloat() |
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lineSpacingExtra = ReadBookConfig.lineSpacingExtra.dp |
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paragraphSpacing = ReadBookConfig.paragraphSpacing.dp |
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titlePaint.textSize = (ReadBookConfig.textSize + 2).dp.toFloat() |
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contentPaint.textSize = ReadBookConfig.textSize.dp.toFloat() |
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@ -366,4 +312,8 @@ object ChapterProvider { |
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visibleBottom = paddingTop + visibleHeight |
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} |
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private val TextPaint.textHeight: Float |
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get() { |
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return this.fontMetrics.descent - fontMetrics.ascent + fontMetrics.leading |
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} |
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} |
口口吕
5 years ago
committed by
GitHub