com.adobe.fontengine.font

Interface ScalerDebugger

public interface ScalerDebugger

Receives events during the process of hinting and rasterizing glyphs. This interface is intended for development purposes only. During the development of Scalers, it is useful to have access to internal data structures. In a typical C/C++ environment, this is achieved with debugging code bracketed by #IFDEF statements. This technique is no available in Java; here is the pattern we follow instead: - this interface is meant to be called by the scalers, so that they can communicate interesting events and values to outside. - scalers have a Scaler.setDebugger(ScalerDebugger) method which can be called by the development environment to provide an implementation of this interface, and therefore receive events. This method typically stores the ScalerDebugger instance in a field, e.g. debugger. - inside a scaler, the typical pattern is at an instrumentation point is: if (ScalerDebugger.debugOn && debugger != null) { this.debugger.foo (...); } Note that all the code related to debugging is protected the static final boolean debugOn. If that constant is false (the normal value for checked-in code and therefore for shipped code), then much of the code related to debugging is eliminated by the compiler, and we are left with a small overhead (a trivial setDebugger method in the scalers, a field, and the class for this interface). During development, one can set this constant to true to get fully functional debugging.

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	debugOn Enable or disable debugging support.

Method Summary

Modifier and Type	Method and Description
void	cscanCross(double x, double y)
OutlineConsumer2	getCFFOutlineConsumer()
void	hintedTTOutline(TTOutline outline)
void	ttInterpLog(String s)
void	ttScanHCross(int coordOnScanLine, int scanLineCoordI, boolean on)
void	ttScanLine(int x1, int y1, int x2, int y2)
void	ttScanLog(String s)
void	ttScanQuadCurve(int x1, int y1, int x2, int y2, int x3, int y3)
void	ttScanScanType(int scanType)
void	ttScanVCross(int coordOnScanLine, int scanLineCoordI, boolean on)
void	unhintedTTOutline(TTOutline outline)

Field Detail

debugOn

static final boolean debugOn

Enable or disable debugging support.

See Also:

Constant Field Values

Method Detail

ttInterpLog

void ttInterpLog(String s)

cscanCross

void cscanCross(double x,
                double y)

getCFFOutlineConsumer

OutlineConsumer2 getCFFOutlineConsumer()

unhintedTTOutline

void unhintedTTOutline(TTOutline outline)

hintedTTOutline

void hintedTTOutline(TTOutline outline)

ttScanScanType

void ttScanScanType(int scanType)

ttScanLog

void ttScanLog(String s)

ttScanLine

void ttScanLine(int x1,
                int y1,
                int x2,
                int y2)

ttScanQuadCurve

void ttScanQuadCurve(int x1,
                     int y1,
                     int x2,
                     int y2,
                     int x3,
                     int y3)

ttScanHCross

void ttScanHCross(int coordOnScanLine,
                  int scanLineCoordI,
                  boolean on)

ttScanVCross

void ttScanVCross(int coordOnScanLine,
                  int scanLineCoordI,
                  boolean on)