libjava/jni/gtk-peer/gnu_java_awt_peer_gtk_GtkButtonPeer.c

   1 /* gtkbuttonpeer.c -- Native implementation of GtkButtonPeer
   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., 59 Temple Place, Suite 330, Boston, MA
  19 02111-1307 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_GtkButtonPeer.h"
  41
  42 static gboolean focus_in_cb (GtkWidget *widget,
  43                              GdkEventFocus *event,
  44                              jobject peer);
  45 static gboolean focus_out_cb (GtkWidget *widget,
  46                               GdkEventFocus *event,
  47                               jobject peer);
  48
  49 static void block_expose_events_cb (GtkWidget *widget,
  50                                     jobject peer);
  51
  52 JNIEXPORT void JNICALL
  53 Java_gnu_java_awt_peer_gtk_GtkButtonPeer_create
  54   (JNIEnv *env, jobject obj, jstring label)
  55 {
  56   const char *c_label;
  57   GtkWidget *eventbox;
  58   GtkWidget *button;
  59
  60   NSA_SET_GLOBAL_REF (env, obj);
  61
  62   c_label = (*env)->GetStringUTFChars (env, label, NULL);
  63
  64   gdk_threads_enter ();
  65
  66   eventbox = gtk_event_box_new ();
  67   button = gtk_button_new_with_label (c_label);
  68   gtk_container_add (GTK_CONTAINER (eventbox), button);
  69   gtk_widget_show (button);
  70
  71   gdk_threads_leave ();
  72
  73   (*env)->ReleaseStringUTFChars (env, label, c_label);
  74   NSA_SET_PTR (env, obj, eventbox);
  75 }
  76
  77 JNIEXPORT void JNICALL
  78 Java_gnu_java_awt_peer_gtk_GtkButtonPeer_connectSignals
  79   (JNIEnv *env, jobject obj)
  80 {
  81   void *ptr;
  82   jobject *gref;
  83   GtkWidget *button;
  84
  85   ptr = NSA_GET_PTR (env, obj);
  86   gref = NSA_GET_GLOBAL_REF (env, obj);
  87
  88   gdk_threads_enter ();
  89
  90   button = gtk_bin_get_child (GTK_BIN (ptr));
  91
  92   g_signal_connect (G_OBJECT (ptr), "event",
  93                     G_CALLBACK (pre_event_handler), *gref);
  94
  95   g_signal_connect (G_OBJECT (button), "event",
  96                     G_CALLBACK (pre_event_handler), *gref);
  97
  98   g_signal_connect (G_OBJECT (button), "focus-in-event",
  99                     G_CALLBACK (focus_in_cb), *gref);
 100
 101   g_signal_connect (G_OBJECT (button), "focus-out-event",
 102                     G_CALLBACK (focus_out_cb), *gref);
 103
 104   g_signal_connect_after (G_OBJECT (button), "pressed",
 105                           G_CALLBACK (block_expose_events_cb), *gref);
 106
 107   g_signal_connect_after (G_OBJECT (button), "released",
 108                           G_CALLBACK (block_expose_events_cb), *gref);
 109
 110   gdk_threads_leave ();
 111 }
 112
 113 JNIEXPORT void JNICALL
 114 Java_gnu_java_awt_peer_gtk_GtkButtonPeer_gtkSetLabel
 115   (JNIEnv *env, jobject obj, jstring jtext)
 116 {
 117   const char *text;
 118   GtkWidget *button;
 119   GtkWidget *label;
 120   void *ptr;
 121
 122   ptr = NSA_GET_PTR (env, obj);
 123
 124   text = (*env)->GetStringUTFChars (env, jtext, NULL);
 125
 126   gdk_threads_enter ();
 127
 128   button = gtk_bin_get_child (GTK_BIN (ptr));
 129   label = gtk_bin_get_child (GTK_BIN (button));
 130   gtk_label_set_text (GTK_LABEL (label), text);
 131
 132   gdk_threads_leave ();
 133
 134   (*env)->ReleaseStringUTFChars (env, jtext, text);
 135 }
 136
 137 JNIEXPORT void JNICALL
 138 Java_gnu_java_awt_peer_gtk_GtkButtonPeer_gtkWidgetModifyFont
 139   (JNIEnv *env, jobject obj, jstring name, jint style, jint size)
 140 {
 141   const char *font_name;
 142   void *ptr;
 143   GtkWidget *button;
 144   GtkWidget *label;
 145   PangoFontDescription *font_desc;
 146
 147   ptr = NSA_GET_PTR (env, obj);
 148
 149   font_name = (*env)->GetStringUTFChars (env, name, NULL);
 150
 151   gdk_threads_enter();
 152
 153   button = gtk_bin_get_child (GTK_BIN (ptr));
 154   label = gtk_bin_get_child (GTK_BIN (button));
 155
 156   font_desc = pango_font_description_from_string (font_name);
 157   pango_font_description_set_size (font_desc, size * dpi_conversion_factor);
 158
 159   if (style & AWT_STYLE_BOLD)
 160     pango_font_description_set_weight (font_desc, PANGO_WEIGHT_BOLD);
 161
 162   if (style & AWT_STYLE_ITALIC)
 163     pango_font_description_set_style (font_desc, PANGO_STYLE_OBLIQUE);
 164
 165   gtk_widget_modify_font (GTK_WIDGET(label), font_desc);
 166
 167   pango_font_description_free (font_desc);
 168
 169   gdk_threads_leave();
 170
 171   (*env)->ReleaseStringUTFChars (env, name, font_name);
 172 }
 173
 174 JNIEXPORT void JNICALL
 175 Java_gnu_java_awt_peer_gtk_GtkButtonPeer_gtkWidgetSetBackground
 176   (JNIEnv *env, jobject obj, jint red, jint green, jint blue)
 177 {
 178   GdkColor normal_color;
 179   GdkColor prelight_color;
 180   GdkColor active_color;
 181   int prelight_red;
 182   int prelight_blue;
 183   int prelight_green;
 184   GtkWidget *button;
 185   void *ptr;
 186
 187   ptr = NSA_GET_PTR (env, obj);
 188
 189   normal_color.red = (red / 255.0) * 65535;
 190   normal_color.green = (green / 255.0) * 65535;
 191   normal_color.blue = (blue / 255.0) * 65535;
 192
 193   /* This calculation only approximate the active color produced by
 194      Sun's AWT. */
 195   active_color.red = 0.85 * (red / 255.0) * 65535;
 196   active_color.green = 0.85 * (green / 255.0) * 65535;
 197   active_color.blue = 0.85 * (blue / 255.0) * 65535;
 198
 199   /* There is no separate prelight color in Motif. */
 200   prelight_red = 1.15 * (red / 255.0) * 65535;
 201   prelight_green = 1.15 * (green / 255.0) * 65535;
 202   prelight_blue = 1.15 * (blue / 255.0) * 65535;
 203
 204   prelight_color.red = prelight_red > 65535 ? 65535 : prelight_red;
 205   prelight_color.green = prelight_green > 65535 ? 65535 : prelight_green;
 206   prelight_color.blue = prelight_blue > 65535 ? 65535 : prelight_blue;
 207
 208   gdk_threads_enter ();
 209
 210   button = gtk_bin_get_child (GTK_BIN (ptr));
 211
 212   gtk_widget_modify_bg (button, GTK_STATE_NORMAL, &normal_color);
 213   gtk_widget_modify_bg (button, GTK_STATE_ACTIVE, &active_color);
 214   gtk_widget_modify_bg (button, GTK_STATE_PRELIGHT, &prelight_color);
 215
 216   gdk_threads_leave ();
 217 }
 218
 219 JNIEXPORT void JNICALL
 220 Java_gnu_java_awt_peer_gtk_GtkButtonPeer_gtkWidgetSetForeground
 221   (JNIEnv *env, jobject obj, jint red, jint green, jint blue)
 222 {
 223   GdkColor color;
 224   GtkWidget *button;
 225   GtkWidget *label;
 226   void *ptr;
 227
 228   ptr = NSA_GET_PTR (env, obj);
 229
 230   color.red = (red / 255.0) * 65535;
 231   color.green = (green / 255.0) * 65535;
 232   color.blue = (blue / 255.0) * 65535;
 233
 234   gdk_threads_enter ();
 235
 236   button = gtk_bin_get_child (GTK_BIN (ptr));
 237   label = gtk_bin_get_child (GTK_BIN (button));
 238
 239   gtk_widget_modify_fg (label, GTK_STATE_NORMAL, &color);
 240   gtk_widget_modify_fg (label, GTK_STATE_ACTIVE, &color);
 241   gtk_widget_modify_fg (label, GTK_STATE_PRELIGHT, &color);
 242
 243   gdk_threads_leave ();
 244 }
 245
 246 JNIEXPORT void JNICALL
 247 Java_gnu_java_awt_peer_gtk_GtkButtonPeer_gtkActivate
 248   (JNIEnv *env, jobject obj)
 249 {
 250   GtkWidget *button;
 251   void *ptr;
 252
 253   ptr = NSA_GET_PTR (env, obj);
 254
 255   gdk_threads_enter ();
 256
 257   button = gtk_bin_get_child (GTK_BIN (ptr));
 258   gtk_widget_activate (GTK_WIDGET (button));
 259
 260   gdk_threads_leave ();
 261 }
 262
 263 JNIEXPORT void JNICALL
 264 Java_gnu_java_awt_peer_gtk_GtkButtonPeer_gtkWidgetRequestFocus
 265   (JNIEnv *env, jobject obj)
 266 {
 267   void *ptr;
 268   GtkWidget *button;
 269
 270   ptr = NSA_GET_PTR (env, obj);
 271
 272   gdk_threads_enter ();
 273   button = gtk_bin_get_child (GTK_BIN (ptr));
 274   gtk_widget_grab_focus (button);
 275   gdk_threads_leave ();
 276 }
 277
 278 JNIEXPORT void JNICALL
 279 Java_gnu_java_awt_peer_gtk_GtkButtonPeer_setNativeBounds
 280   (JNIEnv *env, jobject obj, jint x, jint y, jint width, jint height)
 281 {
 282   GtkWidget *widget, *child;
 283   void *ptr;
 284
 285   ptr = NSA_GET_PTR (env, obj);
 286
 287   gdk_threads_enter ();
 288
 289   widget = GTK_WIDGET (ptr);
 290
 291   /* We assume that -1 is a width or height and not a request for the
 292      widget's natural size. */
 293   width = width < 0 ? 0 : width;
 294   height = height < 0 ? 0 : height;
 295   child = gtk_bin_get_child (GTK_BIN (widget));
 296
 297   if (!(width == 0 && height == 0))
 298     {
 299       /* Set the event box's size request... */
 300       gtk_widget_set_size_request (widget, width, height);
 301       /* ...and the button's size request... */
 302       gtk_widget_set_size_request (child, width, height);
 303       /* ...and the label's size request. */
 304       gtk_widget_set_size_request (gtk_bin_get_child (GTK_BIN (child)), width,
 305                                                       height);
 306       if (widget->parent != NULL)
 307         gtk_fixed_move (GTK_FIXED (widget->parent), widget, x, y);
 308     }
 309
 310   gdk_threads_leave ();
 311 }
 312
 313 static gboolean
 314 focus_in_cb (GtkWidget *widget __attribute((unused)),
 315              GdkEventFocus *event __attribute((unused)),
 316              jobject peer)
 317 {
 318   gdk_threads_leave ();
 319   (*gdk_env())->CallVoidMethod (gdk_env(), peer,
 320                               postFocusEventID,
 321                               AWT_FOCUS_GAINED,
 322                               JNI_FALSE);
 323   gdk_threads_enter ();
 324   return FALSE;
 325 }
 326
 327 static gboolean
 328 focus_out_cb (GtkWidget *widget __attribute((unused)),
 329               GdkEventFocus *event __attribute((unused)),
 330               jobject peer)
 331 {
 332   gdk_threads_leave ();
 333   (*gdk_env())->CallVoidMethod (gdk_env(), peer,
 334                               postFocusEventID,
 335                               AWT_FOCUS_LOST,
 336                               JNI_FALSE);
 337   gdk_threads_enter ();
 338   return FALSE;
 339 }
 340
 341 static void
 342 block_expose_events_cb (GtkWidget *widget, jobject peer)
 343 {
 344   gdk_threads_leave ();
 345   (*gdk_env())->CallVoidMethod (gdk_env(), peer,
 346                               beginNativeRepaintID);
 347   gdk_threads_enter ();
 348
 349   gdk_window_process_updates (widget->window, TRUE);
 350
 351   gdk_threads_leave ();
 352   (*gdk_env())->CallVoidMethod (gdk_env(), peer,
 353                               endNativeRepaintID);
 354   gdk_threads_enter ();
 355 }