1 /*
   2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 #ifndef HB_JDK_H
  27 #define HB_JDK_H
  28 
  29 #include "hb.h"
  30 #include <jni.h>
  31 #include <sunfontids.h>
  32 
  33 # ifdef __cplusplus
  34 extern "C" {
  35 #endif
  36 
  37 typedef struct JDKFontInfo_Struct {
  38     JNIEnv* env;
  39     jobject font2D;
  40     jobject fontStrike;
  41     long nativeFont;
  42     float matrix[4];
  43     float ptSize;
  44     float xPtSize;
  45     float yPtSize;
  46     float devScale; // How much applying the full glyph tx scales x distance.
  47     jboolean aat;
  48 } JDKFontInfo;
  49 
  50 
  51 // Use 16.16 for better precision than 26.6
  52 #define HBFloatToFixedScale ((float)(1 << 16))
  53 #define HBFloatToFixed(f) ((unsigned int)((f) * HBFloatToFixedScale))
  54 
  55 /*
  56  * Note:
  57  *
  58  * Set face size on ft-face before creating hb-font from it.
  59  * Otherwise hb-ft would NOT pick up the font size correctly.
  60  */
  61 
  62 hb_face_t *
  63 hb_jdk_face_create(JDKFontInfo*   jdkFontInfo,
  64                    hb_destroy_func_t destroy);
  65 hb_font_t *
  66 hb_jdk_font_create(JDKFontInfo*   jdkFontInfo,
  67                    hb_destroy_func_t destroy);
  68 
  69 
  70 /* Makes an hb_font_t use JDK internally to implement font functions. */
  71 void
  72 hb_jdk_font_set_funcs(hb_font_t *font);
  73 
  74 
  75 # ifdef __cplusplus
  76 }
  77 #endif
  78 
  79 #endif /* HB_JDK_H */