com.compdfkit.ui.reader

Class CPDFContinueLayoutManager

java.lang.Object

com.compdfkit.ui.reader.CPDFLayoutManager

com.compdfkit.ui.reader.CPDFContinueLayoutManager

public class CPDFContinueLayoutManager
extends CPDFLayoutManager

Calculates page rectangles for continuous reader modes.

This layout manager is used when pages are placed in one scrollable content area instead of being snapped page by page. It supports single-page and double-page display, cover-page mode, vertical and horizontal reading directions, and different formulas for portrait and landscape screen orientation. The manager only calculates geometry; it does not draw pages or mutate the ReaderView directly.

All calculated page rectangles are stored in pageLocations. The content bounds are stored in contentWidth and contentHeight and are later consumed by ReaderView for scrolling, hit testing, and page visibility calculations.

Constructor Summary

Constructors

Constructor and Description
CPDFContinueLayoutManager() Creates a continuous layout manager without binding it to a reader view.
CPDFContinueLayoutManager(ReaderView readerView) Deprecated.

Method Summary

Modifier and Type	Method and Description
float	getContentHeight() Returns the total content height calculated by the last refresh() call.
float	getContentWidth() Returns the total content width calculated by the last refresh() call.
android.graphics.RectF	getPageLocationRect(int pageNum) Returns the calculated page rectangle for the given page index.
void	refresh() Recalculates all page rectangles and total content bounds.
CPDFLayoutManager	setPageSizes(java.util.List<android.graphics.RectF> pageSizes) Sets source PDF page sizes used by legacy call sites.
CPDFLayoutManager	setScale(float scale) Sets the zoom scale used by subsequent layout calculations.
CPDFLayoutManager	setScreenVertical(boolean screenVertical) Sets whether the current screen is treated as portrait for legacy call sites.

Methods inherited from class com.compdfkit.ui.reader.CPDFLayoutManager

getPageSpacing, getReaderHeight, getReaderWidth, setPageSpacing

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CPDFContinueLayoutManager

public CPDFContinueLayoutManager()

Creates a continuous layout manager without binding it to a reader view.

The layout inputs should be supplied through CPDFLayoutConfig before refresh() is called.

CPDFContinueLayoutManager

@Deprecated
public CPDFContinueLayoutManager(ReaderView readerView)

Deprecated.

Legacy constructor kept for source compatibility.

The reader view argument is intentionally ignored. New code should use CPDFContinueLayoutManager() and pass all layout inputs through CPDFLayoutConfig.

Parameters:

readerView - ignored legacy reader view reference

Method Detail

setScale

public CPDFLayoutManager setScale(float scale)

Sets the zoom scale used by subsequent layout calculations.

Parameters:

scale - zoom multiplier applied to source page sizes

Returns:

this manager for call chaining

getPageLocationRect

public android.graphics.RectF getPageLocationRect(int pageNum)

Returns the calculated page rectangle for the given page index.

The rectangle is expressed in the continuous content coordinate system, not in screen coordinates. An empty rectangle is returned for invalid indexes or before layout is ready.

Parameters:

pageNum - zero-based page index

Returns:

page bounds in content coordinates

getContentWidth

public float getContentWidth()

Returns the total content width calculated by the last refresh() call.

Returns:

scrollable content width

getContentHeight

public float getContentHeight()

Returns the total content height calculated by the last refresh() call.

Returns:

scrollable content height

setPageSizes

public CPDFLayoutManager setPageSizes(java.util.List<android.graphics.RectF> pageSizes)

Sets source PDF page sizes used by legacy call sites.

When CPDFLayoutConfig is provided, config page sizes take precedence during refresh().

Parameters:

pageSizes - original PDF page sizes

Returns:

this manager for call chaining

setScreenVertical

public CPDFLayoutManager setScreenVertical(boolean screenVertical)

Sets whether the current screen is treated as portrait for legacy call sites.

When CPDFLayoutConfig is provided, config orientation takes precedence during refresh().

Parameters:

screenVertical - true when the reader screen should use portrait formulas

Returns:

this manager for call chaining

refresh

public void refresh()

Recalculates all page rectangles and total content bounds.

The method first copies values from CPDFLayoutConfig into local fields, then dispatches to a layout branch based on screen orientation, reading direction, double-page mode, cover-page mode, and same-width mode. It updates pageLocations, contentWidth, contentHeight, and the inherited CPDFLayoutResult.