164 float x, float y)
165 throws FontScalerException;
166
167 abstract GeneralPath getGlyphVectorOutline(long pScalerContext, int[] glyphs,
168 int numGlyphs, float x, float y)
169 throws FontScalerException;
170
171 /* Used by Java2D disposer to ensure native resources are released.
172 Note: this method does not release any of created
173 scaler context objects! */
174 public void dispose() {}
175
176 /* At the moment these 3 methods are needed for Type1 fonts only.
177 * For Truetype fonts we extract required info outside of scaler
178 * on java layer.
179 */
180 abstract int getNumGlyphs() throws FontScalerException;
181 abstract int getMissingGlyphCode() throws FontScalerException;
182 abstract int getGlyphCode(char charCode) throws FontScalerException;
183
184 /* This method returns table cache used by native layout engine.
185 * This cache is essentially just small collection of
186 * pointers to various truetype tables. See definition of TTLayoutTableCache
187 * in the fontscalerdefs.h for more details.
188 *
189 * Note that tables themselves have same format as defined in the truetype
190 * specification, i.e. font scaler do not need to perform any preprocessing.
191 *
192 * Probably it is better to have API to request pointers to each table
193 * separately instead of requesting pointer to some native structure.
194 * (then there is not need to share its definition by different
195 * implementations of scaler).
196 * However, this means multiple JNI calls and potential impact on performance.
197 *
198 * Note: return value 0 is legal.
199 * This means tables are not available (e.g. type1 font).
200 */
201 abstract long getLayoutTableCache() throws FontScalerException;
202
203 /* Used by the OpenType engine for mark positioning. */
204 abstract Point2D.Float getGlyphPoint(long pScalerContext,
205 int glyphCode, int ptNumber)
206 throws FontScalerException;
207
208 abstract long getUnitsPerEm();
209
210 /* Returns pointer to native structure describing rasterization attributes.
211 Format of this structure is scaler-specific.
212
213 Callee is responsible for freeing scaler context (using free()).
214
215 Note:
216 Context is tightly associated with strike and it is actually
217 freed when corresponding strike is being released.
218 */
219 abstract long createScalerContext(double[] matrix,
220 int aa, int fm,
221 float boldness, float italic,
222 boolean disableHinting);
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164 float x, float y)
165 throws FontScalerException;
166
167 abstract GeneralPath getGlyphVectorOutline(long pScalerContext, int[] glyphs,
168 int numGlyphs, float x, float y)
169 throws FontScalerException;
170
171 /* Used by Java2D disposer to ensure native resources are released.
172 Note: this method does not release any of created
173 scaler context objects! */
174 public void dispose() {}
175
176 /* At the moment these 3 methods are needed for Type1 fonts only.
177 * For Truetype fonts we extract required info outside of scaler
178 * on java layer.
179 */
180 abstract int getNumGlyphs() throws FontScalerException;
181 abstract int getMissingGlyphCode() throws FontScalerException;
182 abstract int getGlyphCode(char charCode) throws FontScalerException;
183
184 /* Used by the OpenType engine for mark positioning. */
185 abstract Point2D.Float getGlyphPoint(long pScalerContext,
186 int glyphCode, int ptNumber)
187 throws FontScalerException;
188
189 abstract long getUnitsPerEm();
190
191 /* Returns pointer to native structure describing rasterization attributes.
192 Format of this structure is scaler-specific.
193
194 Callee is responsible for freeing scaler context (using free()).
195
196 Note:
197 Context is tightly associated with strike and it is actually
198 freed when corresponding strike is being released.
199 */
200 abstract long createScalerContext(double[] matrix,
201 int aa, int fm,
202 float boldness, float italic,
203 boolean disableHinting);
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