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/* gtkscrollbarpeer.c -- Native implementation of GtkScrollbarPeer
Copyright (C) 1998, 1999 Free Software Foundation, Inc.
This file is part of the peer AWT libraries of GNU Classpath.
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Library General Public License as published
by the Free Software Foundation, either version 2 of the License, or
(at your option) any later verion.
This library 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 Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; if not, write to the Free Software Foundation
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307 USA. */
#include "gtkpeer.h"
#include "gnu_java_awt_peer_gtk_GtkScrollbarPeer.h"
struct range_scrollbar
{
GtkRange *range;
jobject *scrollbar;
};
static void
post_adjustment_event (GtkAdjustment *adj, struct range_scrollbar *rs)
{
jint type;
switch (rs->range->scroll_type)
{
case GTK_SCROLL_STEP_FORWARD:
type = AWT_ADJUSTMENT_UNIT_INCREMENT;
break;
case GTK_SCROLL_STEP_BACKWARD:
type = AWT_ADJUSTMENT_UNIT_DECREMENT;
break;
case GTK_SCROLL_PAGE_FORWARD:
type = AWT_ADJUSTMENT_BLOCK_INCREMENT;
break;
case GTK_SCROLL_PAGE_BACKWARD:
type = AWT_ADJUSTMENT_BLOCK_DECREMENT;
break;
case GTK_SCROLL_JUMP:
type = AWT_ADJUSTMENT_TRACK;
break;
default: /* GTK_SCROLL_NONE */
return;
}
(*gdk_env)->CallVoidMethod (gdk_env, *(rs->scrollbar), postAdjustmentEventID,
type, (jint) adj->value);
}
JNIEXPORT void JNICALL
Java_gnu_java_awt_peer_gtk_GtkScrollbarPeer_create
(JNIEnv *env, jobject obj, jint orientation, jint value,
jint min, jint max, jint step_incr, jint page_incr, jint visible_amount)
{
GtkWidget *sb;
GtkObject *adj;
gdk_threads_enter ();
adj = gtk_adjustment_new (value, min, max,
step_incr, page_incr,
visible_amount);
sb = (orientation) ? gtk_vscrollbar_new (GTK_ADJUSTMENT (adj)) :
gtk_hscrollbar_new (GTK_ADJUSTMENT (adj));
gdk_threads_leave ();
NSA_SET_PTR (env, obj, sb);
}
JNIEXPORT void JNICALL
Java_gnu_java_awt_peer_gtk_GtkScrollbarPeer_connectHooks
(JNIEnv *env, jobject obj)
{
void *ptr;
struct range_scrollbar *rs;
rs = (struct range_scrollbar *) malloc (sizeof (struct range_scrollbar));
ptr = NSA_GET_PTR (env, obj);
gdk_threads_enter ();
gtk_widget_realize (GTK_WIDGET (ptr));
rs->range = GTK_RANGE (ptr);
rs->scrollbar = (jobject *) malloc (sizeof (jobject));
*(rs->scrollbar) = (*env)->NewGlobalRef (env, obj);
gtk_signal_connect (GTK_OBJECT (GTK_RANGE (ptr)->adjustment),
"value_changed",
GTK_SIGNAL_FUNC (post_adjustment_event), rs);
connect_awt_hook (env, obj, 4,
GTK_RANGE (ptr)->trough,
GTK_RANGE (ptr)->slider,
GTK_RANGE (ptr)->step_forw,
GTK_RANGE (ptr)->step_back);
gdk_threads_leave ();
}
JNIEXPORT void JNICALL
Java_gnu_java_awt_peer_gtk_GtkScrollbarPeer_setLineIncrement
(JNIEnv *env, jobject obj, jint amount)
{
void *ptr;
GtkAdjustment *adj;
ptr = NSA_GET_PTR (env, obj);
gdk_threads_enter ();
adj = GTK_RANGE (ptr)->adjustment;
adj->step_increment = amount;
gtk_adjustment_changed (adj);
gdk_threads_leave ();
}
JNIEXPORT void JNICALL
Java_gnu_java_awt_peer_gtk_GtkScrollbarPeer_setPageIncrement
(JNIEnv *env, jobject obj, jint amount)
{
void *ptr;
GtkAdjustment *adj;
ptr = NSA_GET_PTR (env, obj);
gdk_threads_enter ();
adj = GTK_RANGE (ptr)->adjustment;
adj->page_increment = amount;
gtk_adjustment_changed (adj);
gdk_threads_leave ();
}
JNIEXPORT void JNICALL
Java_gnu_java_awt_peer_gtk_GtkScrollbarPeer_setValues
(JNIEnv *env, jobject obj, jint value, jint visible, jint min, jint max)
{
void *ptr;
GtkAdjustment *adj;
ptr = NSA_GET_PTR (env, obj);
gdk_threads_enter ();
adj = GTK_RANGE (ptr)->adjustment;
adj->value = value;
adj->page_size = visible;
adj->lower = min;
adj->upper = max;
gtk_adjustment_changed (adj);
gdk_threads_leave ();
}
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