| /* qtfontmetrics.cpp -- |
| Copyright (C) 2005 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| #include <assert.h> |
| #include <QChar> |
| #include <QFont> |
| #include <QFontMetrics> |
| #include <QString> |
| #include <QPainter> |
| #include <QStringList> |
| #include <QFontDatabase> |
| #include <gnu_java_awt_peer_qt_QtFontMetrics.h> |
| #include "qtfont.h" |
| #include "qtstrings.h" |
| #include "qtgraphics.h" |
| |
| QFontMetrics *getFontMetrics( JNIEnv *env, jobject obj ) |
| { |
| jclass cls = env->GetObjectClass( obj ); |
| jfieldID field = env->GetFieldID( cls, "nativeObject", "J" ); |
| return (QFontMetrics *)env->GetLongField( obj, field ); |
| } |
| |
| static void setNativePtr( JNIEnv *env, jobject obj, void *value ) |
| { |
| jlong longValue = (jlong) value; |
| jclass cls = env->GetObjectClass( obj ); |
| jfieldID field = env->GetFieldID( cls, "nativeObject", "J" ); |
| env->SetLongField( obj, field, longValue ); |
| } |
| |
| static jobject makeRectangle(JNIEnv *env, QRect *rect) |
| { |
| if( rect == NULL ) |
| return NULL; |
| if( rect->isNull() || !rect->isValid() ) |
| return NULL; |
| jclass cls = env->FindClass("java/awt/Rectangle"); |
| jmethodID mid = env->GetMethodID(cls, "<init>", "(IIII)V"); |
| jvalue values[4]; |
| |
| int x,y,w,h; |
| rect->getRect(&x, &y, &w, &h); |
| values[0].i = (jint) x; |
| values[1].i = (jint) y; |
| values[2].i = (jint) w; |
| values[3].i = (jint) h; |
| |
| return env->NewObjectA(cls, mid, values); |
| } |
| |
| /* |
| * Create font metrics from a font. |
| */ |
| JNIEXPORT void JNICALL Java_gnu_java_awt_peer_qt_QtFontMetrics_init |
| (JNIEnv *env, jobject obj, jobject fontPeer) |
| { |
| QFont *f = getFont(env, fontPeer); |
| assert( f ); |
| QFontMetrics *fm = new QFontMetrics( *f ); |
| assert( fm ); |
| setNativePtr( env, obj, fm ); |
| } |
| |
| /* |
| * Create font metrics from a font. |
| */ |
| JNIEXPORT void JNICALL Java_gnu_java_awt_peer_qt_QtFontMetrics_initGraphics |
| (JNIEnv *env, jobject obj, jobject fontPeer, jobject graphics) |
| { |
| QFont *f = getFont(env, fontPeer); |
| assert( f ); |
| QPainter *painter = getPainter( env, graphics ); |
| assert( painter ); |
| QFontMetrics *fm = new QFontMetrics( *f , painter->device()); |
| assert( fm ); |
| setNativePtr( env, obj, fm ); |
| } |
| |
| /* |
| * Dispose |
| */ |
| JNIEXPORT void JNICALL Java_gnu_java_awt_peer_qt_QtFontMetrics_dispose |
| (JNIEnv *env, jobject obj) |
| { |
| QFontMetrics *fm = getFontMetrics( env, obj ); |
| if ( fm ) |
| delete fm; |
| setNativePtr( env, obj, NULL ); |
| } |
| |
| /* |
| * Returns JNI_TRUE if a character is displayable. |
| */ |
| JNIEXPORT jboolean JNICALL Java_gnu_java_awt_peer_qt_QtFontMetrics_canDisplay |
| (JNIEnv *env, jobject obj, jint c) |
| { |
| QFontMetrics *fm = getFontMetrics( env, obj ); |
| assert( fm ); |
| bool result = fm->inFont( QChar( (unsigned int) c ) ); |
| return (result ? JNI_TRUE : JNI_FALSE); |
| } |
| |
| /* |
| * Returns the ascent. |
| */ |
| JNIEXPORT jint JNICALL Java_gnu_java_awt_peer_qt_QtFontMetrics_getAscent |
| (JNIEnv *env, jobject obj) |
| { |
| QFontMetrics *fm = getFontMetrics( env, obj ); |
| assert( fm ); |
| return fm->ascent(); |
| } |
| |
| /* |
| * Returns the descent |
| */ |
| JNIEXPORT jint JNICALL Java_gnu_java_awt_peer_qt_QtFontMetrics_getDescent |
| (JNIEnv *env, jobject obj) |
| { |
| QFontMetrics *fm = getFontMetrics( env, obj ); |
| assert( fm ); |
| return fm->descent(); |
| } |
| |
| /* |
| * Returns the height. |
| */ |
| JNIEXPORT jint JNICALL Java_gnu_java_awt_peer_qt_QtFontMetrics_getHeight |
| (JNIEnv *env, jobject obj) |
| { |
| QFontMetrics *fm = getFontMetrics( env, obj ); |
| assert( fm ); |
| return fm->height(); |
| } |
| |
| /* |
| */ |
| JNIEXPORT jint JNICALL Java_gnu_java_awt_peer_qt_QtFontMetrics_getLeading |
| (JNIEnv *env, jobject obj) |
| { |
| QFontMetrics *fm = getFontMetrics( env, obj ); |
| assert( fm ); |
| return fm->leading(); |
| } |
| |
| /* |
| * getStringBounds |
| */ |
| JNIEXPORT jobject JNICALL Java_gnu_java_awt_peer_qt_QtFontMetrics_getStringBounds |
| (JNIEnv *env, jobject obj, jstring str) |
| { |
| QFontMetrics *fm = getFontMetrics( env, obj ); |
| assert( fm ); |
| QString *qStr = getQString(env, str); |
| QRect r = fm->boundingRect( *qStr ); |
| delete qStr; |
| |
| return makeRectangle( env, &r ); |
| } |
| |
| /* |
| * Returns the width of the widest character. |
| */ |
| JNIEXPORT jint JNICALL Java_gnu_java_awt_peer_qt_QtFontMetrics_getMaxAdvance |
| (JNIEnv *env, jobject obj) |
| { |
| QFontMetrics *fm = getFontMetrics( env, obj ); |
| assert( fm ); |
| return fm->maxWidth(); |
| } |
| |
| /* |
| * Returns the width of a given character. |
| */ |
| JNIEXPORT jint JNICALL Java_gnu_java_awt_peer_qt_QtFontMetrics_charWidth |
| (JNIEnv *env, jobject obj, jchar c) |
| { |
| QFontMetrics *fm = getFontMetrics( env, obj ); |
| assert( fm ); |
| return fm->width( QChar( (unsigned short)c ) ); |
| } |
| |
| /* |
| * Returns the width of a string. |
| */ |
| JNIEXPORT jint JNICALL Java_gnu_java_awt_peer_qt_QtFontMetrics_stringWidth |
| (JNIEnv *env, jobject obj, jstring str) |
| { |
| QFontMetrics *fm = getFontMetrics( env, obj ); |
| assert( fm ); |
| QString *qStr = getQString(env, str); |
| int width = fm->width( *qStr ); |
| delete qStr; |
| return width; |
| } |
| |
| |
| |