libjava/classpath/native/jni/gtk-peer/gnu_java_awt_peer_gtk_GtkLabelPeer.c

   1 /* gtklabelpeer.c -- Native implementation of GtkLabelPeer
   2    Copyright (C) 1998, 1999 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38
  39 #include "gtkpeer.h"
  40 #include "gnu_java_awt_peer_gtk_GtkLabelPeer.h"
  41
  42 JNIEXPORT void JNICALL
  43 Java_gnu_java_awt_peer_gtk_GtkLabelPeer_create
  44   (JNIEnv *env, jobject obj, jstring text, jfloat xalign)
  45 {
  46   GtkWidget *label;
  47   GtkWidget *eventbox;
  48   const char *str;
  49
  50   gdk_threads_enter ();
  51
  52   NSA_SET_GLOBAL_REF (env, obj);
  53
  54   str = (*env)->GetStringUTFChars (env, text, 0);
  55
  56   eventbox = gtk_event_box_new ();
  57   label = gtk_label_new (str);
  58   gtk_misc_set_alignment (GTK_MISC (label), xalign, 0.5);
  59   gtk_container_add (GTK_CONTAINER (eventbox), label);
  60   gtk_widget_show (label);
  61
  62   (*env)->ReleaseStringUTFChars (env, text, str);
  63
  64   NSA_SET_PTR (env, obj, eventbox);
  65
  66   gdk_threads_leave ();
  67 }
  68
  69 JNIEXPORT void JNICALL
  70 Java_gnu_java_awt_peer_gtk_GtkLabelPeer_gtkWidgetGetPreferredDimensions
  71   (JNIEnv *env, jobject obj, jintArray jdims)
  72 {
  73   void *ptr;
  74   jint *dims;
  75   GtkWidget *label;
  76   GtkRequisition current_req;
  77   GtkRequisition natural_req;
  78
  79   gdk_threads_enter ();
  80
  81   ptr = NSA_GET_PTR (env, obj);
  82
  83   label = gtk_bin_get_child (GTK_BIN (ptr));
  84
  85   dims = (*env)->GetIntArrayElements (env, jdims, 0);
  86   dims[0] = dims[1] = 0;
  87
  88   /* Save the widget's current size request. */
  89   gtk_widget_size_request (GTK_WIDGET (label), &current_req);
  90
  91   /* Get the widget's "natural" size request. */
  92   gtk_widget_set_size_request (GTK_WIDGET (label), -1, -1);
  93   gtk_widget_size_request (GTK_WIDGET (label), &natural_req);
  94
  95   /* Reset the widget's size request. */
  96   gtk_widget_set_size_request (GTK_WIDGET (label),
  97                                current_req.width, current_req.height);
  98
  99   dims[0] = natural_req.width;
 100   dims[1] = natural_req.height;
 101
 102   (*env)->ReleaseIntArrayElements (env, jdims, dims, 0);
 103
 104   gdk_threads_leave ();
 105 }
 106
 107 JNIEXPORT void JNICALL
 108 Java_gnu_java_awt_peer_gtk_GtkLabelPeer_gtkWidgetModifyFont
 109   (JNIEnv *env, jobject obj, jstring name, jint style, jint size)
 110 {
 111   const char *font_name;
 112   void *ptr;
 113   GtkWidget *label;
 114   PangoFontDescription *font_desc;
 115
 116   gdk_threads_enter ();
 117
 118   ptr = NSA_GET_PTR (env, obj);
 119
 120   font_name = (*env)->GetStringUTFChars (env, name, NULL);
 121
 122   label = gtk_bin_get_child (GTK_BIN (ptr));
 123
 124   if (!label)
 125     {
 126       gdk_threads_leave ();
 127       return;
 128     }
 129
 130   font_desc = pango_font_description_from_string (font_name);
 131   pango_font_description_set_size (font_desc,
 132                                    size * cp_gtk_dpi_conversion_factor);
 133
 134   if (style & AWT_STYLE_BOLD)
 135     pango_font_description_set_weight (font_desc, PANGO_WEIGHT_BOLD);
 136
 137   if (style & AWT_STYLE_ITALIC)
 138     pango_font_description_set_style (font_desc, PANGO_STYLE_OBLIQUE);
 139
 140   gtk_widget_modify_font (GTK_WIDGET (label), font_desc);
 141
 142   pango_font_description_free (font_desc);
 143
 144   (*env)->ReleaseStringUTFChars (env, name, font_name);
 145
 146   gdk_threads_leave ();
 147 }
 148
 149 JNIEXPORT void JNICALL
 150 Java_gnu_java_awt_peer_gtk_GtkLabelPeer_setNativeText
 151   (JNIEnv *env, jobject obj, jstring text)
 152 {
 153   const char *str;
 154   void *ptr;
 155   GtkWidget *label;
 156
 157   gdk_threads_enter ();
 158
 159   ptr = NSA_GET_PTR (env, obj);
 160
 161   str = (*env)->GetStringUTFChars (env, text, 0);
 162
 163   label = gtk_bin_get_child (GTK_BIN (ptr));
 164
 165   gtk_label_set_label (GTK_LABEL (label), str);
 166
 167   (*env)->ReleaseStringUTFChars (env, text, str);
 168
 169   gdk_threads_leave ();
 170 }
 171
 172 JNIEXPORT void JNICALL
 173 Java_gnu_java_awt_peer_gtk_GtkLabelPeer_nativeSetAlignment
 174   (JNIEnv *env, jobject obj, jfloat xalign)
 175 {
 176   void *ptr;
 177   GtkWidget *label;
 178
 179   gdk_threads_enter ();
 180
 181   ptr = NSA_GET_PTR (env, obj);
 182
 183   label = gtk_bin_get_child (GTK_BIN(ptr));
 184
 185   gtk_misc_set_alignment (GTK_MISC (label), xalign, 0.5);
 186
 187   gdk_threads_leave ();
 188 }
 189
 190 JNIEXPORT void JNICALL
 191 Java_gnu_java_awt_peer_gtk_GtkLabelPeer_setNativeBounds
 192   (JNIEnv *env, jobject obj, jint x, jint y, jint width, jint height)
 193 {
 194   GtkWidget *widget;
 195   void *ptr;
 196
 197   gdk_threads_enter ();
 198
 199   ptr = NSA_GET_PTR (env, obj);
 200
 201   widget = GTK_WIDGET (ptr);
 202
 203   /* We assume that -1 is a width or height and not a request for the
 204      widget's natural size. */
 205   width = width < 0 ? 0 : width;
 206   height = height < 0 ? 0 : height;
 207
 208   if (!(width == 0 && height == 0))
 209     {
 210       /* Set the event box's size request... */
 211       gtk_widget_set_size_request (widget, width, height);
 212       /* ...and the label's size request. */
 213       gtk_widget_set_size_request (gtk_bin_get_child (GTK_BIN (widget)),
 214                                    width, height);
 215
 216       if (widget->parent != NULL && GTK_IS_FIXED (widget->parent))
 217         gtk_fixed_move (GTK_FIXED (widget->parent), widget, x, y);
 218     }
 219
 220   gdk_threads_leave ();
 221 }