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Diffstat (limited to 'native/jni/qt-peer/qtfontmetrics.cpp')
| -rw-r--r-- | native/jni/qt-peer/qtfontmetrics.cpp | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/native/jni/qt-peer/qtfontmetrics.cpp b/native/jni/qt-peer/qtfontmetrics.cpp new file mode 100644 index 000000000..b95c0e111 --- /dev/null +++ b/native/jni/qt-peer/qtfontmetrics.cpp @@ -0,0 +1,232 @@ +/* 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 <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, jchar c) +{ + QFontMetrics *fm = getFontMetrics( env, obj ); + assert( fm ); + bool result = fm->inFont( QChar( (unsigned short)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; +} + + + |