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

   1 /* gnu_java_awt_peer_gtk_GdkGraphicsEnvironment.c
   2    Copyright (C) 2004, 2006 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 #include <glib.h>
  39 #include <gdk/gdk.h>
  40
  41 #include "gdkfont.h"
  42 #include "gdkdisplay.h"
  43 #include "gnu_java_awt_peer_gtk_GdkGraphicsEnvironment.h"
  44
  45 jclass gdkGraphicsEnvironment_class;
  46
  47 JNIEXPORT void JNICALL
  48 Java_gnu_java_awt_peer_gtk_GdkGraphicsEnvironment_initIDs
  49 (JNIEnv *env, jclass klazz __attribute__((unused)))
  50 {
  51   gtkpeer_init_display_IDs(env);
  52 }
  53
  54 JNIEXPORT void JNICALL
  55 Java_gnu_java_awt_peer_gtk_GdkGraphicsEnvironment_nativeInitState
  56 (JNIEnv *env, jobject obj)
  57 {
  58         GdkDisplay *defaultDisplay;
  59
  60     gdk_threads_enter();
  61
  62     /* Retrieve the default display. */
  63     defaultDisplay = gdk_display_get_default();
  64
  65     gdk_threads_leave();
  66
  67     /* Store display pointer in GdkGraphicsEnvironment instance. */
  68     gtkpeer_set_display(env, obj, (void *) defaultDisplay);
  69 }
  70
  71 static gint
  72 cmp_families (const void *a, const void *b)
  73 {
  74   const char *a_name = pango_font_family_get_name (*(PangoFontFamily **)a);
  75   const char *b_name = pango_font_family_get_name (*(PangoFontFamily **)b);
  76
  77   return g_utf8_collate (a_name, b_name);
  78 }
  79
  80 JNIEXPORT void JNICALL
  81 Java_gnu_java_awt_peer_gtk_GdkGraphicsEnvironment_nativeGetFontFamilies
  82 (JNIEnv *env, jobject  self __attribute__((unused)), jobjectArray family_name)
  83 {
  84   PangoContext *context = NULL;
  85   PangoFontFamily **families = NULL;
  86   int n_families = 0;
  87   int idx = 0;
  88
  89   gdk_threads_enter ();
  90
  91   context = gdk_pango_context_get();
  92   g_assert (context != NULL);
  93
  94   pango_context_list_families (context, &families, &n_families);
  95
  96   qsort (families, n_families, sizeof (PangoFontFamily *), cmp_families);
  97
  98   for (idx = 0;  idx < n_families;  idx++)
  99     {
 100       const char *name_tmp =  pango_font_family_get_name (families[idx]);
 101       jstring name = (*env)->NewStringUTF (env, name_tmp);
 102       (*env)->SetObjectArrayElement (env, family_name, idx, name);
 103       (*env)->DeleteLocalRef(env, name);
 104     }
 105   g_free (families);
 106
 107   gdk_threads_leave ();
 108 }
 109
 110 JNIEXPORT jint JNICALL
 111 Java_gnu_java_awt_peer_gtk_GdkGraphicsEnvironment_nativeGetNumFontFamilies
 112 (JNIEnv *env __attribute__((unused)), jobject obj __attribute__((unused)))
 113 {
 114   PangoContext *context = NULL;
 115   PangoFontFamily **families = NULL;
 116   gint n_families = 0;
 117   gint num = 0;
 118
 119   gdk_threads_enter ();
 120
 121   context = gdk_pango_context_get();
 122   g_assert (context != NULL);
 123
 124   pango_context_list_families (context, &families, &n_families);
 125
 126   num = n_families;
 127   g_free (families);
 128
 129   gdk_threads_leave ();
 130
 131   return num;
 132 }
 133
 134 JNIEXPORT jobjectArray JNICALL
 135 Java_gnu_java_awt_peer_gtk_GdkGraphicsEnvironment_nativeGetScreenDevices
 136 (JNIEnv *env, jobject obj)
 137 {
 138         jmethodID gdkScreenGraphicsDevice_ctor, gdkScreenGraphicsDevice_init;
 139         jclass gdkScreenGraphicsDevice_class;
 140         int numScreens = 0, i = 0;
 141         GdkDisplay *display;
 142         jobjectArray array;
 143         jobject instance;
 144
 145         gdkScreenGraphicsDevice_class = (*env)->FindClass
 146     (env, "gnu/java/awt/peer/gtk/GdkScreenGraphicsDevice");
 147
 148         gdkScreenGraphicsDevice_ctor = (*env)->GetMethodID
 149     (env, gdkScreenGraphicsDevice_class, "<init>",
 150      "(Lgnu/java/awt/peer/gtk/GdkGraphicsEnvironment;)V");
 151
 152         gdkScreenGraphicsDevice_init = (*env)->GetMethodID
 153     (env, gdkScreenGraphicsDevice_class, "init", "()V");
 154
 155         display = (GdkDisplay *) gtkpeer_get_display(env, obj);
 156
 157         gdk_threads_enter();
 158
 159         numScreens = gdk_display_get_n_screens(display);
 160
 161
 162         /* Create a suitably sized array. */
 163         array = (*env)->NewObjectArray(env,
 164                                    numScreens,
 165                                    gdkScreenGraphicsDevice_class,
 166                                    NULL);
 167
 168         /* Create GdkScreenGraphicsDevice instances, store the native pointer to
 169          * the GScreen object with them, run a 2nd initialization phase and
 170          * put the new instance into the result array.
 171          */
 172         for ( ; i < numScreens ; i++)
 173         {
 174                 instance = (*env)->NewObject (env,
 175                                       gdkScreenGraphicsDevice_class,
 176                                       gdkScreenGraphicsDevice_ctor,
 177                                       obj);
 178
 179         gtkpeer_set_screen(env, instance, gdk_display_get_screen(display, i));
 180
 181         gdk_threads_leave();
 182         (*env)->CallVoidMethod(env,
 183                                instance,
 184                                gdkScreenGraphicsDevice_init);
 185                 gdk_threads_enter();
 186
 187         (*env)->SetObjectArrayElement(env, array, i, instance);
 188     }
 189
 190     gdk_threads_leave();
 191
 192     return array;
 193 }
 194
 195 JNIEXPORT jobject JNICALL
 196 Java_gnu_java_awt_peer_gtk_GdkGraphicsEnvironment_nativeGetDefaultScreenDevice
 197 (JNIEnv *env, jobject obj)
 198 {
 199     jclass gdkScreenGraphicsDevice_class;
 200     jmethodID gdkScreenGraphicsDevice_ctor, gdkScreenGraphicsDevice_init;
 201     jobject defaultDevice;
 202     GdkScreen *defaultScreen;
 203
 204     gdkScreenGraphicsDevice_class = (*env)->FindClass
 205     (env, "gnu/java/awt/peer/gtk/GdkScreenGraphicsDevice");
 206
 207     gdkScreenGraphicsDevice_ctor = (*env)->GetMethodID
 208     (env, gdkScreenGraphicsDevice_class, "<init>",
 209      "(Lgnu/java/awt/peer/gtk/GdkGraphicsEnvironment;)V");
 210     gdkScreenGraphicsDevice_init = (*env)->GetMethodID
 211     (env, gdkScreenGraphicsDevice_class, "init", "()V");
 212
 213     /* Create the GdkScreenGraphicsDevice instance. */
 214     defaultDevice = (*env)->NewObject(env, gdkScreenGraphicsDevice_class,
 215                                       gdkScreenGraphicsDevice_ctor, obj);
 216
 217     gdk_threads_enter();
 218
 219     defaultScreen = gdk_screen_get_default();
 220
 221     gdk_threads_leave();
 222
 223         /* Class initialization will have set up the native_state storage
 224          * mechanism for GdkScreenGraphicsDevice.
 225          */
 226     gtkpeer_set_screen(env, defaultDevice, defaultScreen);
 227
 228     (*env)->CallVoidMethod(env,
 229                            defaultDevice,
 230                            gdkScreenGraphicsDevice_init);
 231
 232     return defaultDevice;
 233 }
 234
 235 JNIEXPORT jintArray JNICALL
 236 Java_gnu_java_awt_peer_gtk_GdkGraphicsEnvironment_getMouseCoordinates
 237 (JNIEnv *env, jobject obj)
 238 {
 239   jintArray retArray;
 240   jint *values;
 241   GdkDisplay *display;
 242   gint x, y, screenIndex;
 243   GdkScreen *screen;
 244
 245   display = (GdkDisplay *) gtkpeer_get_display(env, obj);
 246   g_assert (display != NULL);
 247
 248   gdk_threads_enter ();
 249
 250   gdk_display_get_pointer (display, &screen, &x, &y, NULL);
 251   screenIndex = gdk_screen_get_number( screen );
 252
 253   gdk_threads_leave ();
 254
 255   retArray = (*env)->NewIntArray (env, 3);
 256   values = (*env)->GetIntArrayElements (env, retArray, NULL);
 257
 258   values[0] = screenIndex;
 259   values[1] = x;
 260   values[2] = y;
 261
 262   (*env)->ReleaseIntArrayElements (env, retArray, values, 0);
 263
 264   return retArray;
 265 }
 266
 267 JNIEXPORT jboolean JNICALL
 268 Java_gnu_java_awt_peer_gtk_GdkGraphicsEnvironment_isWindowUnderMouse
 269 (JNIEnv *env, jobject obj, jobject windowPeer)
 270 {
 271   GdkDisplay *display = NULL;
 272   gint x = 0;
 273   gint y = 0;
 274   GtkWidget *windowToTest = NULL;
 275   GdkWindow *windowAtPointer = NULL;
 276   jboolean retVal = JNI_FALSE;
 277
 278   display = (GdkDisplay *) gtkpeer_get_display (env, obj);
 279   g_assert (display != NULL);
 280
 281   windowToTest = (GtkWidget *) gtkpeer_get_widget (env, windowPeer);
 282
 283   gdk_threads_enter ();
 284
 285   windowAtPointer = gdk_display_get_window_at_pointer (display, &x, &y);
 286
 287   while (windowAtPointer
 288          && windowAtPointer != windowToTest->window)
 289     windowAtPointer = gdk_window_get_parent (windowAtPointer);
 290
 291   gdk_threads_leave ();
 292
 293   if (windowAtPointer)
 294     retVal = JNI_TRUE;
 295   else
 296     retVal = JNI_FALSE;
 297
 298   return retVal;
 299 }