5f8a45f75c
* jni/gtk-peer/gnu_java_awt_peer_gtk_GdkFontMetrics.c (initState): Mark obj parameter as unused. (stringWidth): Mark obj parameter as unused. Initialize font_name properly. From-SVN: r74198
131 lines
4.3 KiB
C
131 lines
4.3 KiB
C
/* gdkfontmetrics.c
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Copyright (C) 1999, 2003 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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#include "gtkpeer.h"
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#include "gnu_java_awt_peer_gtk_GdkFontMetrics.h"
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#include <gdk/gdkx.h>
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#define ASCENT 0
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#define MAX_ASCENT 1
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#define DESCENT 2
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#define MAX_DESCENT 3
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#define MAX_ADVANCE 4
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#define NUM_METRICS 5
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JNIEXPORT jintArray JNICALL Java_gnu_java_awt_peer_gtk_GdkFontMetrics_initState
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(JNIEnv *env, jobject obj __attribute__((unused)), jstring fname, jint size)
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{
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jintArray array;
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jint *metrics;
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const char *font_name;
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PangoFontDescription *font_desc;
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PangoContext *context;
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PangoFontMetrics *pango_metrics;
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array = (*env)->NewIntArray (env, NUM_METRICS);
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metrics = (*env)->GetIntArrayElements (env, array, NULL);
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font_name = (*env)->GetStringUTFChars (env, fname, NULL);
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gdk_threads_enter ();
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font_desc = pango_font_description_from_string (font_name);
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pango_font_description_set_size (font_desc, size * PANGO_SCALE);
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context = gdk_pango_context_get();
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pango_context_set_font_description (context, font_desc);
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pango_metrics = pango_context_get_metrics (context, font_desc, NULL);
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metrics[ASCENT] =
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pango_font_metrics_get_ascent (pango_metrics) / PANGO_SCALE;
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metrics[MAX_ASCENT] = metrics[ASCENT];
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metrics[DESCENT] =
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pango_font_metrics_get_descent (pango_metrics) / PANGO_SCALE;
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metrics[MAX_DESCENT] = metrics[DESCENT];
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metrics[MAX_ADVANCE] =
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pango_font_metrics_get_approximate_char_width (pango_metrics) / PANGO_SCALE;
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pango_font_metrics_unref (pango_metrics);
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pango_font_description_free (font_desc);
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gdk_threads_leave ();
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(*env)->ReleaseStringUTFChars (env, fname, font_name);
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(*env)->ReleaseIntArrayElements (env, array, metrics, 0);
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return array;
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}
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JNIEXPORT jint JNICALL Java_gnu_java_awt_peer_gtk_GdkFontMetrics_stringWidth
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(JNIEnv *env, jobject obj __attribute__((unused)),
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jstring fname, jint size, jstring str)
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{
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PangoFontDescription *font_desc;
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PangoContext *context;
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PangoLayout *layout;
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int width = 0;
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const char *cstr;
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const char *font_name;
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cstr = (*env)->GetStringUTFChars (env, str, NULL);
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font_name = (*env)->GetStringUTFChars (env, fname, NULL);
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gdk_threads_enter ();
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font_desc = pango_font_description_from_string (font_name);
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pango_font_description_set_size (font_desc, size * PANGO_SCALE);
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context = gdk_pango_context_get();
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pango_context_set_font_description (context, font_desc);
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layout = pango_layout_new (context);
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pango_layout_set_text (layout, cstr, -1);
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pango_layout_get_pixel_size (layout, &width, NULL);
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pango_font_description_free (font_desc);
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gdk_threads_leave ();
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(*env)->ReleaseStringUTFChars (env, fname, font_name);
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(*env)->ReleaseStringUTFChars (env, str, cstr);
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return width;
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}
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