| /* |
| * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * Important note : All AWTxxx functions are defined in font.h. |
| * These were added to remove the dependency of this file on X11. |
| * These functions are used to perform X11 operations and should |
| * be "stubbed out" in environments that do not support X11. |
| * The implementation of these functions has been moved from this file |
| * into X11FontScaler_md.c, which is compiled into another library. |
| */ |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <ctype.h> |
| #include <sys/utsname.h> |
| |
| #include <jni.h> |
| #include <jni_util.h> |
| |
| #include "sun_font_NativeFont.h" |
| #include "sun_font_NativeStrike.h" |
| #include "sun_font_NativeStrikeDisposer.h" |
| #include "sunfontids.h" |
| #include "fontscalerdefs.h" |
| #include "X11FontScaler.h" |
| |
| JNIEXPORT void JNICALL |
| Java_sun_font_NativeStrikeDisposer_freeNativeScalerContext |
| (JNIEnv *env, jobject disposer, jlong pScalerContext) { |
| |
| NativeScalerContext *context = (NativeScalerContext*)pScalerContext; |
| |
| if (context != NULL) { |
| if (context->xFont != NULL) { |
| AWTFreeFont(context->xFont); |
| } |
| free(context); |
| } |
| } |
| |
| JNIEXPORT jlong JNICALL |
| Java_sun_font_NativeStrike_createNullScalerContext |
| (JNIEnv *env, jobject strike) { |
| |
| NativeScalerContext *context = |
| (NativeScalerContext*)malloc(sizeof(NativeScalerContext)); |
| context->xFont = NULL; |
| context->minGlyph = 0; |
| context->maxGlyph = 0; |
| context->numGlyphs = 0; |
| context->defaultGlyph = 0; |
| context->ptSize = NO_POINTSIZE; |
| return (jlong)(uintptr_t)context; |
| } |
| |
| JNIEXPORT jlong JNICALL |
| Java_sun_font_NativeStrike_createScalerContext |
| (JNIEnv *env, jobject strike, jbyteArray xlfdBytes, |
| jint ptSize, jdouble scale) { |
| |
| NativeScalerContext *context; |
| int len = (*env)->GetArrayLength(env, xlfdBytes); |
| |
| char* xlfd = (char*)malloc(len+1); |
| |
| if (xlfd == NULL) { |
| return (jlong)(uintptr_t)0L; |
| } |
| |
| (*env)->GetByteArrayRegion(env, xlfdBytes, 0, len, (jbyte*)xlfd); |
| xlfd[len] = '\0'; |
| context = (NativeScalerContext*)malloc(sizeof(NativeScalerContext)); |
| |
| AWTLoadFont (xlfd, &(context->xFont)); |
| free(xlfd); |
| |
| if (context->xFont == NULL) { /* NULL means couldn't find the font */ |
| free(context); |
| context = NULL; |
| } else { |
| /* numGlyphs is an estimate : X11 doesn't provide a quick way to |
| * discover which glyphs are valid: just the range that contains all |
| * the valid glyphs, and this range may have holes. |
| */ |
| context->minGlyph = (AWTFontMinByte1(context->xFont) << 8) + |
| AWTFontMinCharOrByte2(context->xFont); |
| context->maxGlyph = (AWTFontMaxByte1(context->xFont) << 8) + |
| AWTFontMaxCharOrByte2(context->xFont); |
| context->numGlyphs = context->maxGlyph - context->minGlyph + 1; |
| context->defaultGlyph = AWTFontDefaultChar(context->xFont); |
| /* Sometimes the default_char field of the XFontStruct isn't |
| * initialized to anything, so it can be a large number. So, |
| * check to see if its less than the largest possible value |
| * and if so, then use it. Otherwise, just use the minGlyph. |
| */ |
| if (context->defaultGlyph < context->minGlyph || |
| context->defaultGlyph > context->maxGlyph) { |
| context->defaultGlyph = context->minGlyph; |
| } |
| context->ptSize = ptSize; |
| context->scale = scale; |
| } |
| |
| /* |
| * REMIND: freeing of native resources? XID, XFontStruct etc?? |
| */ |
| return (jlong)(uintptr_t)context; |
| } |
| |
| |
| /* JNIEXPORT jint JNICALL */ |
| /* Java_sun_font_NativeFont_getItalicAngle */ |
| /* (JNIEnv *env, jobject font) { */ |
| |
| /* UInt32 angle; */ |
| /* AWTGetFontItalicAngle(xFont, &angle); */ |
| /*X11 reports italic angle as 1/64ths of a degree, relative to 3 o'clock |
| * with anti-clockwise being the +ve rotation direction. |
| * We return |
| XGetFontProperty(xFont,XA_ITALIC_ANGLE, &angle); |
| */ |
| |
| /* return (jint)angle; */ |
| /* } */ |
| |
| JNIEXPORT jboolean JNICALL |
| Java_sun_font_NativeFont_fontExists |
| (JNIEnv *env, jclass fontClass, jbyteArray xlfdBytes) { |
| |
| int count = 0; |
| int len = (*env)->GetArrayLength(env, xlfdBytes); |
| char* xlfd = (char*)malloc(len+1); |
| |
| if (xlfd == NULL) { |
| return JNI_FALSE; |
| } |
| |
| (*env)->GetByteArrayRegion(env, xlfdBytes, 0, len, (jbyte*)xlfd); |
| xlfd[len] = '\0'; |
| |
| count = AWTCountFonts(xlfd); |
| free(xlfd); |
| if (count > 0) { |
| return JNI_TRUE; |
| } else { |
| return JNI_FALSE; |
| } |
| } |
| |
| JNIEXPORT jboolean JNICALL |
| Java_sun_font_NativeFont_haveBitmapFonts |
| (JNIEnv *env, jclass fontClass, jbyteArray xlfdBytes) { |
| |
| int count = 0; |
| int len = (*env)->GetArrayLength(env, xlfdBytes); |
| char* xlfd = (char*)malloc(len+1); |
| |
| if (xlfd == NULL) { |
| return JNI_FALSE; |
| } |
| |
| (*env)->GetByteArrayRegion(env, xlfdBytes, 0, len, (jbyte*)xlfd); |
| xlfd[len] = '\0'; |
| |
| count = AWTCountFonts(xlfd); |
| free(xlfd); |
| if (count > 2) { |
| return JNI_TRUE; |
| } else { |
| return JNI_FALSE; |
| } |
| } |
| |
| // CountGlyphs doubles as way of getting a native font reference |
| // and telling if its valid. So far as I can tell GenerateImage etc |
| // just return if this "initialisation method" hasn't been called. |
| // So clients of this class need to call CountGlyphs() right after |
| // construction to be safe. |
| JNIEXPORT jint JNICALL |
| Java_sun_font_NativeFont_countGlyphs |
| (JNIEnv *env, jobject font, jbyteArray xlfdBytes, jint ptSize) { |
| |
| NativeScalerContext *context = (NativeScalerContext*) |
| Java_sun_font_NativeStrike_createScalerContext |
| (env, NULL, xlfdBytes, ptSize, 1); |
| |
| if (context == NULL) { |
| return 0; |
| } else { |
| int numGlyphs = context->numGlyphs; |
| AWTFreeFont(context->xFont); |
| free(context); |
| return numGlyphs; |
| } |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_sun_font_NativeStrike_getMaxGlyph |
| (JNIEnv *env, jobject strike, jlong pScalerContext) { |
| |
| NativeScalerContext *context = (NativeScalerContext*)pScalerContext; |
| if (context == NULL) { |
| return (jint)0; |
| } else { |
| return (jint)context->maxGlyph+1; |
| } |
| } |
| |
| JNIEXPORT jfloat JNICALL |
| Java_sun_font_NativeFont_getGlyphAdvance |
| (JNIEnv *env, jobject font2D, jlong pScalerContext, jint glyphCode) { |
| |
| NativeScalerContext *context = (NativeScalerContext*)pScalerContext; |
| AWTFont xFont = (AWTFont)context->xFont; |
| AWTChar xcs = NULL; |
| jfloat advance = 0.0f; |
| |
| if (xFont == NULL || context->ptSize == NO_POINTSIZE) { |
| return advance; |
| } |
| |
| if (glyphCode < context->minGlyph || glyphCode > context->maxGlyph) { |
| glyphCode = context->defaultGlyph; |
| } |
| |
| /* If number of glyphs is 256 or less, the metrics are |
| * stored correctly in the XFontStruct for each |
| * character. If the # characters is more (double byte |
| * case), then these metrics seem flaky and there's no |
| * way to determine if they have been set or not. |
| */ |
| if ((context->maxGlyph <= 256) && (AWTFontPerChar(xFont, 0) != NULL)) { |
| xcs = AWTFontPerChar(xFont, glyphCode - context->minGlyph); |
| advance = AWTCharAdvance(xcs); |
| } else { |
| int direction, ascent, descent; |
| AWTChar2b xChar; |
| |
| xChar.byte1 = (unsigned char) (glyphCode >> 8); |
| xChar.byte2 = (unsigned char) glyphCode; |
| AWTFontTextExtents16(xFont, &xChar, &xcs); |
| advance = AWTCharAdvance(xcs); |
| AWTFreeChar(xcs); |
| } |
| return (jfloat)(advance/context->scale); |
| } |
| |
| JNIEXPORT jlong JNICALL |
| Java_sun_font_NativeFont_getGlyphImageNoDefault |
| (JNIEnv *env, jobject font2D, jlong pScalerContext, jint glyphCode) { |
| |
| NativeScalerContext *context = (NativeScalerContext*)pScalerContext; |
| AWTFont xFont = context->xFont; |
| AWTChar2b xChar; |
| |
| if (xFont == NULL || context->ptSize == NO_POINTSIZE) { |
| return (jlong)0; |
| } |
| |
| if (glyphCode < context->minGlyph || glyphCode > context->maxGlyph) { |
| return (jlong)0; |
| } |
| |
| xChar.byte1 = (unsigned char)(glyphCode >> 8); |
| xChar.byte2 = (unsigned char)glyphCode; |
| return AWTFontGenerateImage(xFont, &xChar); |
| } |
| |
| JNIEXPORT jlong JNICALL |
| Java_sun_font_NativeFont_getGlyphImage |
| (JNIEnv *env, jobject font2D, jlong pScalerContext, jint glyphCode) { |
| |
| NativeScalerContext *context = (NativeScalerContext*)pScalerContext; |
| AWTFont xFont = context->xFont; |
| AWTChar2b xChar; |
| |
| if (xFont == NULL || context->ptSize == NO_POINTSIZE) { |
| return (jlong)0; |
| } |
| |
| if (glyphCode < context->minGlyph || glyphCode > context->maxGlyph) { |
| glyphCode = context->defaultGlyph; |
| } |
| |
| xChar.byte1 = (unsigned char)(glyphCode >> 8); |
| xChar.byte2 = (unsigned char)glyphCode; |
| return AWTFontGenerateImage(xFont, &xChar); |
| } |
| |
| JNIEXPORT jobject JNICALL |
| Java_sun_font_NativeFont_getFontMetrics |
| (JNIEnv *env, jobject font2D, jlong pScalerContext) { |
| |
| NativeScalerContext *context = (NativeScalerContext*)pScalerContext; |
| AWTFont xFont = (AWTFont)context->xFont; |
| jfloat j0=0, j1=1, ay=j0, dy=j0, mx=j0; |
| jobject metrics; |
| |
| if (xFont == NULL) { |
| return NULL; |
| } |
| |
| /* the commented out lines are the old 1.4.x behaviour which used max |
| * bounds instead of the font's designed ascent/descent */ |
| /* ay = (jfloat)-AWTCharAscent(AWTFontMaxBounds(xFont)); */ |
| /* dy = (jfloat)AWTCharDescent(AWTFontMaxBounds(xFont)); */ |
| |
| ay = (jfloat)-AWTFontAscent(xFont); |
| dy = (jfloat)AWTFontDescent(xFont); |
| mx = (jfloat)AWTCharAdvance(AWTFontMaxBounds(xFont)); |
| |
| /* ascent : no need to set ascentX - it will be zero |
| * descent : no need to set descentX - it will be zero |
| * baseline : old releases "made up" a number and also seemed to |
| * make it up for "X" and set "Y" to 0. |
| * leadingX : no need to set leadingX - it will be zero. |
| * leadingY : made-up number, but being compatible with what 1.4.x did |
| * advance : no need to set yMaxLinearAdvanceWidth - it will be zero. |
| */ |
| metrics = (*env)->NewObject(env, sunFontIDs.strikeMetricsClass, |
| sunFontIDs.strikeMetricsCtr, |
| j0, ay, j0, dy, j1, j0, j0, j1, mx, j0); |
| /* printf("X11 asc=%f dsc=%f adv=%f scale=%f\n", */ |
| /* ay, dy, mx, (float)context->scale); */ |
| return metrics; |
| } |