679 lines
18 KiB
C
679 lines
18 KiB
C
/* gdkgraphics.c
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Copyright (C) 1999 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 "gdkfont.h"
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#include "gnu_java_awt_peer_gtk_GdkGraphics.h"
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#include <gdk/gdkprivate.h>
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#include <gdk/gdkx.h>
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#define GDK_STABLE_IS_PIXMAP(d) (GDK_IS_PIXMAP(d))
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GdkPoint *
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translate_points (JNIEnv *env, jintArray xpoints, jintArray ypoints,
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jint npoints, jint x_offset, jint y_offset);
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static void realize_cb (GtkWidget *widget, jobject peer);
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JNIEXPORT void JNICALL
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Java_gnu_java_awt_peer_gtk_GdkGraphics_copyState
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(JNIEnv *env, jobject obj, jobject old)
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{
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struct graphics *g, *g_old;
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g = (struct graphics *) malloc (sizeof (struct graphics));
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g_old = (struct graphics *) NSA_GET_PTR (env, old);
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*g = *g_old;
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gdk_threads_enter ();
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g->gc = gdk_gc_new (g->drawable);
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gdk_gc_copy (g->gc, g_old->gc);
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if (GDK_STABLE_IS_PIXMAP (g->drawable))
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gdk_pixmap_ref (g->drawable);
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else /* GDK_IS_WINDOW (g->drawable) */
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gdk_window_ref (g->drawable);
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gdk_colormap_ref (g->cm);
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gdk_threads_leave ();
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NSA_SET_PTR (env, obj, g);
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}
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JNIEXPORT void JNICALL
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Java_gnu_java_awt_peer_gtk_GdkGraphics_initState__II
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(JNIEnv *env, jobject obj, jint width, jint height)
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{
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struct graphics *g;
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g = (struct graphics *) malloc (sizeof (struct graphics));
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g->x_offset = g->y_offset = 0;
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gdk_threads_enter ();
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g->drawable = (GdkDrawable *) gdk_pixmap_new (NULL, width, height,
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gdk_rgb_get_visual ()->depth);
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g->cm = gdk_rgb_get_cmap ();
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gdk_colormap_ref (g->cm);
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g->gc = gdk_gc_new (g->drawable);
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gdk_threads_leave ();
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NSA_SET_PTR (env, obj, g);
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}
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/* copy the native state of the peer (GtkWidget *) to the native state
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of the graphics object */
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JNIEXPORT void JNICALL
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Java_gnu_java_awt_peer_gtk_GdkGraphics_initState__Lgnu_java_awt_peer_gtk_GtkComponentPeer_2
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(JNIEnv *env, jobject obj, jobject peer)
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{
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struct graphics *g = (struct graphics *) malloc (sizeof (struct graphics));
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void *ptr;
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GtkWidget *widget;
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GdkColor color;
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ptr = NSA_GET_PTR (env, peer);
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g->x_offset = g->y_offset = 0;
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gdk_threads_enter ();
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widget = GTK_WIDGET (ptr);
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g->drawable = (GdkDrawable *) widget->window;
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gdk_window_ref (g->drawable);
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g->cm = gtk_widget_get_colormap (widget);
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gdk_colormap_ref (g->cm);
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g->gc = gdk_gc_new (g->drawable);
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gdk_gc_copy (g->gc, widget->style->fg_gc[GTK_STATE_NORMAL]);
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color = widget->style->fg[GTK_STATE_NORMAL];
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gdk_threads_leave ();
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NSA_SET_PTR (env, obj, g);
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}
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JNIEXPORT void JNICALL
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Java_gnu_java_awt_peer_gtk_GdkGraphics_connectSignals
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(JNIEnv *env, jobject obj, jobject peer)
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{
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void *ptr;
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ptr = NSA_GET_PTR (env, peer);
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gdk_threads_enter ();
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g_signal_connect_after (G_OBJECT (ptr), "realize",
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G_CALLBACK (realize_cb), obj);
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gdk_threads_leave ();
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}
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JNIEXPORT void JNICALL
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Java_gnu_java_awt_peer_gtk_GdkGraphics_dispose
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(JNIEnv *env, jobject obj)
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{
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struct graphics *g;
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g = (struct graphics *) NSA_DEL_PTR (env, obj);
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if (!g) return; /* dispose has been called more than once */
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gdk_threads_enter ();
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XFlush (GDK_DISPLAY ());
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gdk_gc_destroy (g->gc);
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if (GDK_STABLE_IS_PIXMAP (g->drawable))
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gdk_pixmap_unref (g->drawable);
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else /* GDK_IS_WINDOW (g->drawable) */
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gdk_window_unref (g->drawable);
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gdk_colormap_unref (g->cm);
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gdk_threads_leave ();
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free (g);
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}
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JNIEXPORT void JNICALL
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Java_gnu_java_awt_peer_gtk_GdkGraphics_translateNative
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(JNIEnv *env, jobject obj, jint x, jint y)
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{
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struct graphics *g;
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g = (struct graphics *) NSA_GET_PTR (env, obj);
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gdk_threads_enter ();
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g->x_offset += x;
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g->y_offset += y;
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gdk_threads_leave ();
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}
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JNIEXPORT void JNICALL
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Java_gnu_java_awt_peer_gtk_GdkGraphics_drawString
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(JNIEnv *env, jobject obj, jobject font, jstring str, jint x, jint y)
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{
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struct peerfont *pfont = NULL;
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struct graphics *g;
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const char *cstr;
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int baseline_y;
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PangoLayoutIter *iter;
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g = (struct graphics *) NSA_GET_PTR (env, obj);
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g_assert (g != NULL);
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pfont = (struct peerfont *)NSA_GET_FONT_PTR (env, font);
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g_assert (pfont != NULL);
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cstr = (*env)->GetStringUTFChars (env, str, NULL);
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gdk_threads_enter ();
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pango_layout_set_font_description (pfont->layout, pfont->desc);
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pango_layout_set_text (pfont->layout, cstr, -1);
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iter = pango_layout_get_iter (pfont->layout);
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baseline_y = pango_layout_iter_get_baseline (iter);
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gdk_draw_layout (g->drawable, g->gc,
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x + g->x_offset,
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y + g->y_offset - PANGO_PIXELS (baseline_y),
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pfont->layout);
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pango_layout_iter_free (iter);
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pango_layout_set_text (pfont->layout, "", -1);
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gdk_flush ();
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gdk_threads_leave ();
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(*env)->ReleaseStringUTFChars (env, str, cstr);
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}
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JNIEXPORT void JNICALL
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Java_gnu_java_awt_peer_gtk_GdkGraphics_drawLine
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(JNIEnv *env, jobject obj, jint x, jint y, jint x2, jint y2)
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{
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struct graphics *g;
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g = (struct graphics *) NSA_GET_PTR (env, obj);
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gdk_threads_enter ();
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gdk_draw_line (g->drawable, g->gc,
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x + g->x_offset, y + g->y_offset,
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x2 + g->x_offset, y2 + g->y_offset);
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gdk_flush ();
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gdk_threads_leave ();
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}
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JNIEXPORT void JNICALL
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Java_gnu_java_awt_peer_gtk_GdkGraphics_fillRect
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(JNIEnv *env, jobject obj, jint x, jint y, jint width, jint height)
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{
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struct graphics *g;
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g = (struct graphics *) NSA_GET_PTR (env, obj);
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gdk_threads_enter ();
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gdk_draw_rectangle (g->drawable, g->gc, TRUE,
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x + g->x_offset, y + g->y_offset, width, height);
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gdk_flush ();
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gdk_threads_leave ();
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}
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JNIEXPORT void JNICALL
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Java_gnu_java_awt_peer_gtk_GdkGraphics_drawRect
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(JNIEnv *env, jobject obj, jint x, jint y, jint width, jint height)
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{
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struct graphics *g;
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g = (struct graphics *) NSA_GET_PTR (env, obj);
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gdk_threads_enter ();
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gdk_draw_rectangle (g->drawable, g->gc, FALSE,
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x + g->x_offset, y + g->y_offset, width, height);
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gdk_flush ();
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gdk_threads_leave ();
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}
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JNIEXPORT void JNICALL
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Java_gnu_java_awt_peer_gtk_GdkGraphics_copyArea
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(JNIEnv *env, jobject obj, jint x, jint y,
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jint width, jint height, jint dx, jint dy)
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{
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struct graphics *g;
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g = (struct graphics *) NSA_GET_PTR (env, obj);
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gdk_threads_enter ();
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gdk_window_copy_area ((GdkWindow *)g->drawable,
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g->gc,
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x + g->x_offset + dx, y + g->y_offset + dy,
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(GdkWindow *)g->drawable,
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x + g->x_offset, y + g->y_offset,
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width, height);
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gdk_flush ();
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gdk_threads_leave ();
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}
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JNIEXPORT void JNICALL
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Java_gnu_java_awt_peer_gtk_GdkGraphics_copyPixmap
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(JNIEnv *env, jobject obj, jobject offscreen,
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jint x, jint y, jint width, jint height)
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{
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struct graphics *g1, *g2;
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g1 = (struct graphics *) NSA_GET_PTR (env, obj);
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g2 = (struct graphics *) NSA_GET_PTR (env, offscreen);
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gdk_threads_enter ();
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gdk_window_copy_area ((GdkWindow *)g1->drawable,
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g1->gc,
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x + g1->x_offset, y + g1->y_offset,
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(GdkWindow *)g2->drawable,
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0 + g2->x_offset, 0 + g2->y_offset,
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width, height);
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gdk_flush ();
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gdk_threads_leave ();
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}
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static void flip_pixbuf (GdkPixbuf *pixbuf,
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jboolean flip_x,
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jboolean flip_y,
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jint width,
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jint height)
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{
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gint src_rs;
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guchar *src_pix;
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src_rs = gdk_pixbuf_get_rowstride (pixbuf);
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src_pix = gdk_pixbuf_get_pixels (pixbuf);
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if (flip_x)
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{
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gint i, channels;
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guchar buf[4];
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channels = gdk_pixbuf_get_has_alpha (pixbuf) ? 4 : 3;
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for (i = 0; i < height; i++)
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{
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guchar *left = src_pix + i * src_rs;
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guchar *right = left + channels * (width - 1);
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while (left < right)
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{
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g_memmove (buf, left, channels);
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g_memmove (left, right, channels);
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g_memmove (right, buf, channels);
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left += channels;
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right -= channels;
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}
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}
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}
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if (flip_y)
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{
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guchar *top = src_pix;
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guchar *bottom = top + (height - 1) * src_rs;
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gpointer buf = g_malloc (src_rs);
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while (top < bottom)
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{
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g_memmove (buf, top, src_rs);
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g_memmove (top, bottom, src_rs);
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g_memmove (bottom, buf, src_rs);
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top += src_rs;
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bottom -= src_rs;
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}
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g_free (buf);
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}
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}
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JNIEXPORT void JNICALL
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Java_gnu_java_awt_peer_gtk_GdkGraphics_copyAndScalePixmap
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(JNIEnv *env, jobject obj, jobject offscreen, jboolean flip_x, jboolean flip_y,
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jint src_x, jint src_y, jint src_width, jint src_height,
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jint dest_x, jint dest_y, jint dest_width, jint dest_height)
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{
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struct graphics *g1, *g2;
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GdkPixbuf *buf_src, *buf_dest;
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g1 = (struct graphics *) NSA_GET_PTR (env, obj);
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g2 = (struct graphics *) NSA_GET_PTR (env, offscreen);
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gdk_threads_enter ();
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buf_src = gdk_pixbuf_get_from_drawable (NULL,
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g2->drawable,
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g2->cm,
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src_x,
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src_y,
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0,
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0,
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src_width,
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src_height);
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buf_dest = gdk_pixbuf_scale_simple (buf_src,
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dest_width,
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dest_height,
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GDK_INTERP_BILINEAR);
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if (flip_x || flip_y)
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{
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flip_pixbuf (buf_dest, flip_x, flip_y, dest_width, dest_height);
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}
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gdk_pixbuf_render_to_drawable (buf_dest,
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g1->drawable,
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g1->gc,
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0,
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0,
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dest_x,
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dest_y,
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dest_width,
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dest_height,
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GDK_RGB_DITHER_NORMAL,
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0,
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0);
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g_object_unref (G_OBJECT (buf_src));
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g_object_unref (G_OBJECT (buf_dest));
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gdk_threads_leave ();
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}
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JNIEXPORT void JNICALL
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Java_gnu_java_awt_peer_gtk_GdkGraphics_clearRect
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(JNIEnv *env, jobject obj, jint x, jint y, jint width, jint height)
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{
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struct graphics *g;
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GdkGCValues saved;
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GtkWidget *widget;
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union widget_union w;
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g = (struct graphics *) NSA_GET_PTR (env, obj);
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gdk_threads_enter ();
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if (GDK_IS_WINDOW (g->drawable))
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{
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w.widget = &widget;
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gdk_window_get_user_data (GDK_WINDOW (g->drawable), w.void_widget);
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if (widget == NULL || !GTK_IS_EVENT_BOX (widget))
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gdk_window_clear_area ((GdkWindow *) g->drawable,
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x + g->x_offset, y + g->y_offset,
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width, height);
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}
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else
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{
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gdk_gc_get_values (g->gc, &saved);
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gdk_gc_set_foreground (g->gc, &(saved.background));
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gdk_draw_rectangle (g->drawable, g->gc, TRUE,
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x + g->x_offset, y + g->y_offset, width, height);
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gdk_gc_set_foreground (g->gc, &(saved.foreground));
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}
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gdk_threads_leave ();
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}
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JNIEXPORT void JNICALL
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Java_gnu_java_awt_peer_gtk_GdkGraphics_setFunction
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(JNIEnv *env, jobject obj, jint func)
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{
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struct graphics *g;
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g = (struct graphics *) NSA_GET_PTR (env, obj);
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gdk_threads_enter ();
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gdk_gc_set_function (g->gc, func);
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gdk_threads_leave ();
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}
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JNIEXPORT void JNICALL
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Java_gnu_java_awt_peer_gtk_GdkGraphics_setFGColor
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(JNIEnv *env, jobject obj, jint red, jint green, jint blue)
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{
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GdkColor color;
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struct graphics *g;
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color.red = red << 8;
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color.green = green << 8;
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color.blue = blue << 8;
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g = (struct graphics *) NSA_GET_PTR (env, obj);
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gdk_threads_enter ();
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gdk_color_alloc (g->cm, &color);
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gdk_gc_set_foreground (g->gc, &color);
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gdk_threads_leave ();
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}
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JNIEXPORT void JNICALL
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Java_gnu_java_awt_peer_gtk_GdkGraphics_drawArc
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(JNIEnv *env, jobject obj, jint x, jint y, jint width, jint height,
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jint angle1, jint angle2)
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{
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struct graphics *g;
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g = (struct graphics *) NSA_GET_PTR (env, obj);
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gdk_threads_enter ();
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gdk_draw_arc (g->drawable, g->gc, FALSE,
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x + g->x_offset, y + g->y_offset,
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width, height, angle1 << 6, angle2 << 6);
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gdk_flush ();
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gdk_threads_leave ();
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}
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GdkPoint *
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translate_points (JNIEnv *env, jintArray xpoints, jintArray ypoints,
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jint npoints, jint x_offset, jint y_offset)
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{
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GdkPoint *points;
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jint *x, *y;
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int i;
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/* allocate one more point than necessary, in case we need to tack
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on an extra due to the semantics of Java polygons. */
|
|
points = g_malloc (sizeof (GdkPoint) * (npoints + 1));
|
|
|
|
x = (*env)->GetIntArrayElements (env, xpoints, NULL);
|
|
y = (*env)->GetIntArrayElements (env, ypoints, NULL);
|
|
|
|
for (i = 0; i < npoints; i++)
|
|
{
|
|
points[i].x = x[i] + x_offset;
|
|
points[i].y = y[i] + y_offset;
|
|
}
|
|
|
|
(*env)->ReleaseIntArrayElements (env, xpoints, x, JNI_ABORT);
|
|
(*env)->ReleaseIntArrayElements (env, ypoints, y, JNI_ABORT);
|
|
|
|
return points;
|
|
}
|
|
|
|
JNIEXPORT void JNICALL
|
|
Java_gnu_java_awt_peer_gtk_GdkGraphics_drawPolyline
|
|
(JNIEnv *env, jobject obj, jintArray xpoints, jintArray ypoints,
|
|
jint npoints)
|
|
{
|
|
struct graphics *g;
|
|
GdkPoint *points;
|
|
|
|
g = (struct graphics *) NSA_GET_PTR (env, obj);
|
|
points = translate_points (env, xpoints, ypoints, npoints,
|
|
g->x_offset, g->y_offset);
|
|
|
|
gdk_threads_enter ();
|
|
gdk_draw_lines (g->drawable, g->gc, points, npoints);
|
|
gdk_flush ();
|
|
gdk_threads_leave ();
|
|
|
|
g_free (points);
|
|
}
|
|
|
|
JNIEXPORT void JNICALL
|
|
Java_gnu_java_awt_peer_gtk_GdkGraphics_drawPolygon
|
|
(JNIEnv *env, jobject obj, jintArray xpoints, jintArray ypoints,
|
|
jint npoints)
|
|
{
|
|
struct graphics *g;
|
|
GdkPoint *points;
|
|
|
|
g = (struct graphics *) NSA_GET_PTR (env, obj);
|
|
points = translate_points (env, xpoints, ypoints, npoints,
|
|
g->x_offset, g->y_offset);
|
|
|
|
/* make sure the polygon is closed, per Java semantics.
|
|
if it's not, we close it. */
|
|
if (points[0].x != points[npoints-1].x || points[0].y != points[npoints-1].y)
|
|
points[npoints++] = points[0];
|
|
|
|
gdk_threads_enter ();
|
|
gdk_draw_lines (g->drawable, g->gc, points, npoints);
|
|
gdk_flush ();
|
|
gdk_threads_leave ();
|
|
|
|
g_free (points);
|
|
}
|
|
|
|
JNIEXPORT void JNICALL
|
|
Java_gnu_java_awt_peer_gtk_GdkGraphics_fillPolygon
|
|
(JNIEnv *env, jobject obj, jintArray xpoints, jintArray ypoints,
|
|
jint npoints)
|
|
{
|
|
struct graphics *g;
|
|
GdkPoint *points;
|
|
|
|
g = (struct graphics *) NSA_GET_PTR (env, obj);
|
|
points = translate_points (env, xpoints, ypoints, npoints,
|
|
g->x_offset, g->y_offset);
|
|
gdk_threads_enter ();
|
|
gdk_draw_polygon (g->drawable, g->gc, TRUE, points, npoints);
|
|
gdk_flush ();
|
|
gdk_threads_leave ();
|
|
|
|
g_free (points);
|
|
}
|
|
|
|
JNIEXPORT void JNICALL
|
|
Java_gnu_java_awt_peer_gtk_GdkGraphics_fillArc
|
|
(JNIEnv *env, jobject obj, jint x, jint y, jint width, jint height,
|
|
jint angle1, jint angle2)
|
|
{
|
|
struct graphics *g;
|
|
|
|
g = (struct graphics *) NSA_GET_PTR (env, obj);
|
|
|
|
gdk_threads_enter ();
|
|
gdk_draw_arc (g->drawable, g->gc, TRUE,
|
|
x + g->x_offset, y + g->y_offset,
|
|
width, height, angle1 << 6, angle2 << 6);
|
|
gdk_flush ();
|
|
gdk_threads_leave ();
|
|
}
|
|
|
|
JNIEXPORT void JNICALL
|
|
Java_gnu_java_awt_peer_gtk_GdkGraphics_drawOval
|
|
(JNIEnv *env, jobject obj, jint x, jint y, jint width, jint height)
|
|
{
|
|
struct graphics *g;
|
|
|
|
g = (struct graphics *) NSA_GET_PTR (env, obj);
|
|
|
|
gdk_threads_enter ();
|
|
gdk_draw_arc (g->drawable, g->gc, FALSE,
|
|
x + g->x_offset, y + g->y_offset,
|
|
width, height, 0, 23040);
|
|
gdk_flush ();
|
|
gdk_threads_leave ();
|
|
}
|
|
|
|
JNIEXPORT void JNICALL
|
|
Java_gnu_java_awt_peer_gtk_GdkGraphics_fillOval
|
|
(JNIEnv *env, jobject obj, jint x, jint y, jint width, jint height)
|
|
{
|
|
struct graphics *g;
|
|
|
|
g = (struct graphics *) NSA_GET_PTR (env, obj);
|
|
|
|
gdk_threads_enter ();
|
|
gdk_draw_arc (g->drawable, g->gc, TRUE,
|
|
x + g->x_offset, y + g->y_offset,
|
|
width, height, 0, 23040);
|
|
gdk_flush ();
|
|
gdk_threads_leave ();
|
|
}
|
|
|
|
JNIEXPORT void JNICALL
|
|
Java_gnu_java_awt_peer_gtk_GdkGraphics_setClipRectangle
|
|
(JNIEnv *env, jobject obj, jint x, jint y, jint width, jint height)
|
|
{
|
|
struct graphics *g;
|
|
GdkRectangle rectangle;
|
|
|
|
g = (struct graphics *) NSA_GET_PTR (env, obj);
|
|
|
|
rectangle.x = x + g->x_offset;
|
|
rectangle.y = y + g->y_offset;
|
|
rectangle.width = width;
|
|
rectangle.height = height;
|
|
|
|
gdk_threads_enter ();
|
|
gdk_gc_set_clip_rectangle (g->gc, &rectangle);
|
|
gdk_threads_leave ();
|
|
}
|
|
|
|
static void realize_cb (GtkWidget *widget __attribute__ ((unused)),
|
|
jobject peer)
|
|
{
|
|
gdk_threads_leave ();
|
|
|
|
(*gdk_env)->CallVoidMethod (gdk_env, peer, initComponentGraphicsID);
|
|
|
|
gdk_threads_enter ();
|
|
}
|