General improvements (#164)
* Optimized PDF tile rendering performance and quality. * Added support for adjusting TTS voice speed and pitch. * Updated the TTS settings UI and playback logic to support real-time parameter adjustments. * Added horizontal scrolling to the PDF viewer bottom toolbar and updated tool arrangement to use fixed spacing. * Refined cross-page selection and text extraction in `PaginatedReader` * Updated EPUB reader styling logic to refine typography and layout controls. * Bump version to 1.0.42(43)
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Aryan
GitHub
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13 changed files with 559 additions and 168 deletions
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@ -120,9 +120,12 @@ import com.aryan.reader.pdf.data.VirtualPage
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import com.aryan.reader.pdf.ocr.OcrElement
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import com.aryan.reader.pdf.ocr.OcrResult
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import kotlinx.coroutines.Dispatchers
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import kotlinx.coroutines.FlowPreview
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import kotlinx.coroutines.NonCancellable
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import kotlinx.coroutines.channels.Channel
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import kotlinx.coroutines.coroutineScope
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import kotlinx.coroutines.delay
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import kotlinx.coroutines.flow.collectLatest
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import kotlinx.coroutines.flow.conflate
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import kotlinx.coroutines.isActive
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import kotlinx.coroutines.launch
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@ -169,7 +172,7 @@ data class EmbeddedAnnotation(
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data class PdfPoint(val x: Float, val y: Float, val timestamp: Long = 0L)
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data class PdfTile(val bitmap: Bitmap, val renderRect: Rect, val tileId: Int)
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data class PdfTile(val bitmap: Bitmap, val renderRect: Rect, val tileId: Int, val renderScale: Float = 1f)
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enum class LinkSource {
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ANNOTATION, TEXT_CONTENT
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@ -371,6 +374,7 @@ data class PageSelectionData(
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val customHighlightColors: StableHolder<Map<PdfHighlightColor, Color>>
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)
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@OptIn(FlowPreview::class)
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@Suppress("unused")
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@Composable
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internal fun PdfPageComposable(
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@ -1104,12 +1108,15 @@ internal fun PdfPageComposable(
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try {
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page = withContext(Dispatchers.IO) { pdfDocumentItem.openPage(pdfPageIndex) }
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snapshotFlow { visibleScreenRect() }.conflate().collect { currentVisibleRect ->
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snapshotFlow { visibleScreenRect() }.conflate().collectLatest { currentVisibleRect ->
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delay(150)
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val tileCalcStart = System.nanoTime()
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if (!isActive) return@collect
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if (!isActive) return@collectLatest
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if (isScrolling && effectiveScale > 1f) {
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return@collect
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return@collectLatest
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}
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val pxTl: Float
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@ -1131,20 +1138,16 @@ internal fun PdfPageComposable(
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oldTiles.forEach { PdfBitmapPool.recycle(it.bitmap) }
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}
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}
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return@collect
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return@collectLatest
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}
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} else {
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val pivotX = screenWidth / 2f
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val pivotY = screenHeight / 2f
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pxTl =
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(((0 - effectiveOffset.x) - pivotX) / effectiveScale + pivotX) - centeringOffsetX
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pyTl =
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(((0 - effectiveOffset.y) - pivotY) / effectiveScale + pivotY) - centeringOffsetY
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pxBr =
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(((screenWidth - effectiveOffset.x) - pivotX) / effectiveScale + pivotX) - centeringOffsetX
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pyBr =
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(((screenHeight - effectiveOffset.y) - pivotY) / effectiveScale + pivotY) - centeringOffsetY
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pxTl = (((0 - effectiveOffset.x) - pivotX) / effectiveScale + pivotX) - centeringOffsetX
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pyTl = (((0 - effectiveOffset.y) - pivotY) / effectiveScale + pivotY) - centeringOffsetY
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pxBr = (((screenWidth - effectiveOffset.x) - pivotX) / effectiveScale + pivotX) - centeringOffsetX
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pyBr = (((screenHeight - effectiveOffset.y) - pivotY) / effectiveScale + pivotY) - centeringOffsetY
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}
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val visibleBitmapRect = Rect(pxTl.toInt(), pyTl.toInt(), pxBr.toInt(), pyBr.toInt())
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@ -1154,13 +1157,11 @@ internal fun PdfPageComposable(
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val requiredTileIds = mutableSetOf<Int>()
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val cols = (actualBitmapWidthPx + tileSizePx - 1) / tileSizePx
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val startCol = (visibleBitmapRect.left / tileSizePx).coerceAtLeast(0)
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val endCol =
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((visibleBitmapRect.right + tileSizePx - 1) / tileSizePx).coerceAtMost(cols)
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val endCol = ((visibleBitmapRect.right + tileSizePx - 1) / tileSizePx).coerceAtMost(cols)
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val startRow = (visibleBitmapRect.top / tileSizePx).coerceAtLeast(0)
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val endRow =
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((visibleBitmapRect.bottom + tileSizePx - 1) / tileSizePx).coerceAtMost(
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(actualBitmapHeightPx + tileSizePx - 1) / tileSizePx
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)
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val endRow = ((visibleBitmapRect.bottom + tileSizePx - 1) / tileSizePx).coerceAtMost(
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(actualBitmapHeightPx + tileSizePx - 1) / tileSizePx
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)
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for (row in startRow until endRow) {
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for (col in startCol until endCol) {
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@ -1170,6 +1171,9 @@ internal fun PdfPageComposable(
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val currentTileIds = tiles.map { it.tileId }.toSet()
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val scaleTolerance = 0.05f
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val validCurrentTileIds = tiles.filter { abs(it.renderScale - effectiveScale) <= scaleTolerance }.map { it.tileId }.toSet()
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val duration = (System.nanoTime() - tileCalcStart) / 1_000_000f
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if (duration > 2f) {
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Timber.tag("PdfPerformance").d(
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@ -1177,9 +1181,9 @@ internal fun PdfPageComposable(
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)
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}
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if (requiredTileIds != currentTileIds) {
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if (requiredTileIds != validCurrentTileIds) {
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val tilesToRenderIds = requiredTileIds - currentTileIds
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val tilesToRenderIds = requiredTileIds - validCurrentTileIds
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val tilesToRecycleIds = currentTileIds - requiredTileIds
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if (tilesToRecycleIds.isNotEmpty()) {
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@ -1205,15 +1209,12 @@ internal fun PdfPageComposable(
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(col + 1) * tileSizePx,
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(row + 1) * tileSizePx
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)
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val tileRenderSize =
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(tileSizePx * effectiveScale).toInt().coerceAtLeast(1)
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val tileRenderSize = (tileSizePx * effectiveScale).toInt().coerceAtLeast(1)
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val tileBitmap = PdfBitmapPool.get(tileRenderSize)
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val fullPageRenderWidth =
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(actualBitmapWidthPx * effectiveScale).toInt()
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val fullPageRenderHeight =
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(actualBitmapHeightPx * effectiveScale).toInt()
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val fullPageRenderWidth = (actualBitmapWidthPx * effectiveScale).toInt()
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val fullPageRenderHeight = (actualBitmapHeightPx * effectiveScale).toInt()
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val tileRenderX = (col * tileSizePx * effectiveScale).toInt()
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val tileRenderY = (row * tileSizePx * effectiveScale).toInt()
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@ -1226,12 +1227,19 @@ internal fun PdfPageComposable(
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renderAnnot = true
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)
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val newTile = PdfTile(tileBitmap, tileRect, tileId)
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val newTile = PdfTile(tileBitmap, tileRect, tileId, effectiveScale)
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var handedOver = false
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try {
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withContext(Dispatchers.Main) {
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tiles = tiles + newTile
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val oldTile = tiles.find { it.tileId == tileId }
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tiles = tiles.filter { it.tileId != tileId } + newTile
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handedOver = true
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oldTile?.let {
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coroutineScope.launch(Dispatchers.IO) {
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PdfBitmapPool.recycle(it.bitmap)
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}
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}
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}
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} finally {
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if (!handedOver) {
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@ -2746,6 +2754,7 @@ internal fun PdfPageComposable(
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} else if (mode == 2 && pointerCount > 1) {
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val oldScale = scale
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val newScale = (scale * zoomChange).coerceIn(1f, 4f)
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Timber.tag("PdfZoomIssue").v("Gesture Scaling: old=$oldScale, new=$newScale, zoomChange=$zoomChange")
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val previousCentroid = event.calculateCentroid(useCurrent = false)
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if (previousCentroid != Offset.Unspecified) {
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@ -3328,8 +3337,12 @@ internal fun PdfPageComposable(
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currentPageRotation = 0
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val MAX_BASE_DIMEN = 3000
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var baseW = scaledWidth
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var baseH = scaledHeight
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val baseRenderScale = 1.5f
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var baseW = (scaledWidth * baseRenderScale).toInt()
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var baseH = (scaledHeight * baseRenderScale).toInt()
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if (baseW > MAX_BASE_DIMEN || baseH > MAX_BASE_DIMEN) {
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val downScale = MAX_BASE_DIMEN.toFloat() / maxOf(baseW, baseH)
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baseW = (baseW * downScale).toInt().coerceAtLeast(1)
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@ -3394,8 +3407,12 @@ internal fun PdfPageComposable(
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}
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val MAX_BASE_DIMEN = 3000
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var baseW = scaledWidth
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var baseH = scaledHeight
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val baseRenderScale = 1.5f
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var baseW = (scaledWidth * baseRenderScale).toInt()
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var baseH = (scaledHeight * baseRenderScale).toInt()
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if (baseW > MAX_BASE_DIMEN || baseH > MAX_BASE_DIMEN) {
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val downScale = MAX_BASE_DIMEN.toFloat() / maxOf(baseW, baseH)
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baseW = (baseW * downScale).toInt().coerceAtLeast(1)
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