| /* gdkgraphics.c |
| Copyright (C) 1999 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| #include "gtkpeer.h" |
| #include "gdkfont.h" |
| #include "gnu_java_awt_peer_gtk_GdkGraphics.h" |
| #include <gdk/gdkprivate.h> |
| #include <gdk/gdkx.h> |
| |
| #define GDK_STABLE_IS_PIXMAP(d) (GDK_IS_PIXMAP(d)) |
| |
| GdkPoint * |
| translate_points (JNIEnv *env, jintArray xpoints, jintArray ypoints, |
| jint npoints, jint x_offset, jint y_offset); |
| static void realize_cb (GtkWidget *widget, jobject peer); |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_GdkGraphics_copyState |
| (JNIEnv *env, jobject obj, jobject old) |
| { |
| struct graphics *g, *g_old; |
| |
| g = (struct graphics *) malloc (sizeof (struct graphics)); |
| g_old = (struct graphics *) NSA_GET_PTR (env, old); |
| |
| *g = *g_old; |
| |
| gdk_threads_enter (); |
| |
| g->gc = gdk_gc_new (g->drawable); |
| gdk_gc_copy (g->gc, g_old->gc); |
| |
| if (GDK_STABLE_IS_PIXMAP (g->drawable)) |
| gdk_pixmap_ref (g->drawable); |
| else /* GDK_IS_WINDOW (g->drawable) */ |
| gdk_window_ref (g->drawable); |
| |
| gdk_colormap_ref (g->cm); |
| |
| gdk_threads_leave (); |
| |
| NSA_SET_PTR (env, obj, g); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_GdkGraphics_initState__II |
| (JNIEnv *env, jobject obj, jint width, jint height) |
| { |
| struct graphics *g; |
| |
| g = (struct graphics *) malloc (sizeof (struct graphics)); |
| g->x_offset = g->y_offset = 0; |
| |
| gdk_threads_enter (); |
| g->drawable = (GdkDrawable *) gdk_pixmap_new (NULL, width, height, |
| gdk_rgb_get_visual ()->depth); |
| g->cm = gdk_rgb_get_cmap (); |
| gdk_colormap_ref (g->cm); |
| g->gc = gdk_gc_new (g->drawable); |
| |
| gdk_threads_leave (); |
| |
| NSA_SET_PTR (env, obj, g); |
| } |
| |
| /* copy the native state of the peer (GtkWidget *) to the native state |
| of the graphics object */ |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_GdkGraphics_initState__Lgnu_java_awt_peer_gtk_GtkComponentPeer_2 |
| (JNIEnv *env, jobject obj, jobject peer) |
| { |
| struct graphics *g = (struct graphics *) malloc (sizeof (struct graphics)); |
| void *ptr; |
| GtkWidget *widget; |
| GdkColor color; |
| |
| ptr = NSA_GET_PTR (env, peer); |
| g->x_offset = g->y_offset = 0; |
| |
| gdk_threads_enter (); |
| |
| widget = GTK_WIDGET (ptr); |
| g->drawable = (GdkDrawable *) widget->window; |
| |
| gdk_window_ref (g->drawable); |
| g->cm = gtk_widget_get_colormap (widget); |
| gdk_colormap_ref (g->cm); |
| g->gc = gdk_gc_new (g->drawable); |
| gdk_gc_copy (g->gc, widget->style->fg_gc[GTK_STATE_NORMAL]); |
| color = widget->style->fg[GTK_STATE_NORMAL]; |
| |
| gdk_threads_leave (); |
| |
| NSA_SET_PTR (env, obj, g); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_GdkGraphics_connectSignals |
| (JNIEnv *env, jobject obj, jobject peer) |
| { |
| void *ptr; |
| jobject *gref; |
| |
| NSA_SET_GLOBAL_REF (env, obj); |
| gref = NSA_GET_GLOBAL_REF (env, obj); |
| |
| ptr = NSA_GET_PTR (env, peer); |
| |
| gdk_threads_enter (); |
| |
| g_signal_connect_after (G_OBJECT (ptr), "realize", |
| G_CALLBACK (realize_cb), *gref); |
| |
| gdk_threads_leave (); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_GdkGraphics_dispose |
| (JNIEnv *env, jobject obj) |
| { |
| struct graphics *g; |
| |
| |
| g = (struct graphics *) NSA_DEL_PTR (env, obj); |
| |
| if (!g) return; /* dispose has been called more than once */ |
| |
| gdk_threads_enter (); |
| XFlush (GDK_DISPLAY ()); |
| |
| gdk_gc_destroy (g->gc); |
| |
| if (GDK_STABLE_IS_PIXMAP (g->drawable)) |
| gdk_pixmap_unref (g->drawable); |
| else /* GDK_IS_WINDOW (g->drawable) */ |
| gdk_window_unref (g->drawable); |
| |
| gdk_colormap_unref (g->cm); |
| |
| gdk_threads_leave (); |
| |
| |
| free (g); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_GdkGraphics_translateNative |
| (JNIEnv *env, jobject obj, jint x, jint y) |
| { |
| struct graphics *g; |
| |
| g = (struct graphics *) NSA_GET_PTR (env, obj); |
| |
| gdk_threads_enter (); |
| |
| g->x_offset += x; |
| g->y_offset += y; |
| |
| gdk_threads_leave (); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_GdkGraphics_drawString |
| (JNIEnv *env, jobject obj, jobject font, jstring str, jint x, jint y) |
| { |
| struct peerfont *pfont = NULL; |
| struct graphics *g; |
| const char *cstr; |
| int baseline_y; |
| PangoLayoutIter *iter; |
| |
| g = (struct graphics *) NSA_GET_PTR (env, obj); |
| g_assert (g != NULL); |
| |
| pfont = (struct peerfont *)NSA_GET_FONT_PTR (env, font); |
| g_assert (pfont != NULL); |
| |
| cstr = (*env)->GetStringUTFChars (env, str, NULL); |
| |
| gdk_threads_enter (); |
| |
| pango_layout_set_font_description (pfont->layout, pfont->desc); |
| pango_layout_set_text (pfont->layout, cstr, -1); |
| iter = pango_layout_get_iter (pfont->layout); |
| |
| baseline_y = pango_layout_iter_get_baseline (iter); |
| |
| gdk_draw_layout (g->drawable, g->gc, |
| x + g->x_offset, |
| y + g->y_offset - PANGO_PIXELS (baseline_y), |
| pfont->layout); |
| |
| pango_layout_iter_free (iter); |
| pango_layout_set_text (pfont->layout, "", -1); |
| |
| gdk_flush (); |
| gdk_threads_leave (); |
| |
| (*env)->ReleaseStringUTFChars (env, str, cstr); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_GdkGraphics_drawLine |
| (JNIEnv *env, jobject obj, jint x, jint y, jint x2, jint y2) |
| { |
| struct graphics *g; |
| |
| g = (struct graphics *) NSA_GET_PTR (env, obj); |
| |
| gdk_threads_enter (); |
| gdk_draw_line (g->drawable, g->gc, |
| x + g->x_offset, y + g->y_offset, |
| x2 + g->x_offset, y2 + g->y_offset); |
| gdk_flush (); |
| gdk_threads_leave (); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_GdkGraphics_fillRect |
| (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_rectangle (g->drawable, g->gc, TRUE, |
| x + g->x_offset, y + g->y_offset, width, height); |
| gdk_flush (); |
| gdk_threads_leave (); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_GdkGraphics_drawRect |
| (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_rectangle (g->drawable, g->gc, FALSE, |
| x + g->x_offset, y + g->y_offset, width, height); |
| gdk_flush (); |
| gdk_threads_leave (); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_GdkGraphics_copyArea |
| (JNIEnv *env, jobject obj, jint x, jint y, |
| jint width, jint height, jint dx, jint dy) |
| { |
| struct graphics *g; |
| |
| g = (struct graphics *) NSA_GET_PTR (env, obj); |
| |
| gdk_threads_enter (); |
| gdk_window_copy_area ((GdkWindow *)g->drawable, |
| g->gc, |
| x + g->x_offset + dx, y + g->y_offset + dy, |
| (GdkWindow *)g->drawable, |
| x + g->x_offset, y + g->y_offset, |
| width, height); |
| gdk_flush (); |
| gdk_threads_leave (); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_GdkGraphics_copyPixmap |
| (JNIEnv *env, jobject obj, jobject offscreen, |
| jint x, jint y, jint width, jint height) |
| { |
| struct graphics *g1, *g2; |
| |
| g1 = (struct graphics *) NSA_GET_PTR (env, obj); |
| g2 = (struct graphics *) NSA_GET_PTR (env, offscreen); |
| |
| gdk_threads_enter (); |
| gdk_window_copy_area ((GdkWindow *)g1->drawable, |
| g1->gc, |
| x + g1->x_offset, y + g1->y_offset, |
| (GdkWindow *)g2->drawable, |
| 0 + g2->x_offset, 0 + g2->y_offset, |
| width, height); |
| gdk_flush (); |
| gdk_threads_leave (); |
| } |
| |
| static void flip_pixbuf (GdkPixbuf *pixbuf, |
| jboolean flip_x, |
| jboolean flip_y, |
| jint width, |
| jint height) |
| { |
| gint src_rs; |
| guchar *src_pix; |
| |
| src_rs = gdk_pixbuf_get_rowstride (pixbuf); |
| src_pix = gdk_pixbuf_get_pixels (pixbuf); |
| |
| if (flip_x) |
| { |
| gint i, channels; |
| guchar buf[4]; |
| |
| channels = gdk_pixbuf_get_has_alpha (pixbuf) ? 4 : 3; |
| |
| for (i = 0; i < height; i++) |
| { |
| guchar *left = src_pix + i * src_rs; |
| guchar *right = left + channels * (width - 1); |
| while (left < right) |
| { |
| g_memmove (buf, left, channels); |
| g_memmove (left, right, channels); |
| g_memmove (right, buf, channels); |
| left += channels; |
| right -= channels; |
| } |
| } |
| } |
| |
| if (flip_y) |
| { |
| guchar *top = src_pix; |
| guchar *bottom = top + (height - 1) * src_rs; |
| gpointer buf = g_malloc (src_rs); |
| |
| while (top < bottom) |
| { |
| g_memmove (buf, top, src_rs); |
| g_memmove (top, bottom, src_rs); |
| g_memmove (bottom, buf, src_rs); |
| top += src_rs; |
| bottom -= src_rs; |
| } |
| |
| g_free (buf); |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_GdkGraphics_copyAndScalePixmap |
| (JNIEnv *env, jobject obj, jobject offscreen, jboolean flip_x, jboolean flip_y, |
| jint src_x, jint src_y, jint src_width, jint src_height, |
| jint dest_x, jint dest_y, jint dest_width, jint dest_height) |
| { |
| struct graphics *g1, *g2; |
| GdkPixbuf *buf_src, *buf_dest; |
| |
| g1 = (struct graphics *) NSA_GET_PTR (env, obj); |
| g2 = (struct graphics *) NSA_GET_PTR (env, offscreen); |
| |
| gdk_threads_enter (); |
| |
| buf_src = gdk_pixbuf_get_from_drawable (NULL, |
| g2->drawable, |
| g2->cm, |
| src_x, |
| src_y, |
| 0, |
| 0, |
| src_width, |
| src_height); |
| |
| buf_dest = gdk_pixbuf_scale_simple (buf_src, |
| dest_width, |
| dest_height, |
| GDK_INTERP_BILINEAR); |
| |
| if (flip_x || flip_y) |
| { |
| flip_pixbuf (buf_dest, flip_x, flip_y, dest_width, dest_height); |
| } |
| |
| gdk_pixbuf_render_to_drawable (buf_dest, |
| g1->drawable, |
| g1->gc, |
| 0, |
| 0, |
| dest_x, |
| dest_y, |
| dest_width, |
| dest_height, |
| GDK_RGB_DITHER_NORMAL, |
| 0, |
| 0); |
| |
| g_object_unref (G_OBJECT (buf_src)); |
| g_object_unref (G_OBJECT (buf_dest)); |
| |
| gdk_threads_leave (); |
| } |
| |
| |
| |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_GdkGraphics_clearRect |
| (JNIEnv *env, jobject obj, jint x, jint y, jint width, jint height) |
| { |
| struct graphics *g; |
| GdkGCValues saved; |
| GtkWidget *widget; |
| union widget_union w; |
| |
| g = (struct graphics *) NSA_GET_PTR (env, obj); |
| |
| gdk_threads_enter (); |
| |
| if (!g) |
| { |
| gdk_threads_leave (); |
| return; |
| } |
| if (GDK_IS_WINDOW (g->drawable)) |
| { |
| w.widget = &widget; |
| gdk_window_get_user_data (GDK_WINDOW (g->drawable), w.void_widget); |
| if (widget == NULL || !GTK_IS_EVENT_BOX (widget)) |
| gdk_window_clear_area ((GdkWindow *) g->drawable, |
| x + g->x_offset, y + g->y_offset, |
| width, height); |
| } |
| else |
| { |
| gdk_gc_get_values (g->gc, &saved); |
| gdk_gc_set_foreground (g->gc, &(saved.background)); |
| gdk_draw_rectangle (g->drawable, g->gc, TRUE, |
| x + g->x_offset, y + g->y_offset, width, height); |
| gdk_gc_set_foreground (g->gc, &(saved.foreground)); |
| } |
| |
| gdk_flush (); |
| gdk_threads_leave (); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_GdkGraphics_setFunction |
| (JNIEnv *env, jobject obj, jint func) |
| { |
| struct graphics *g; |
| g = (struct graphics *) NSA_GET_PTR (env, obj); |
| |
| gdk_threads_enter (); |
| gdk_gc_set_function (g->gc, func); |
| gdk_threads_leave (); |
| } |
| |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_GdkGraphics_setFGColor |
| (JNIEnv *env, jobject obj, jint red, jint green, jint blue) |
| { |
| GdkColor color; |
| struct graphics *g; |
| |
| color.red = red << 8; |
| color.green = green << 8; |
| color.blue = blue << 8; |
| |
| g = (struct graphics *) NSA_GET_PTR (env, obj); |
| |
| gdk_threads_enter (); |
| gdk_color_alloc (g->cm, &color); |
| gdk_gc_set_foreground (g->gc, &color); |
| |
| gdk_threads_leave (); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_gnu_java_awt_peer_gtk_GdkGraphics_drawArc |
| (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, FALSE, |
| x + g->x_offset, y + g->y_offset, |
| width, height, angle1 << 6, angle2 << 6); |
| gdk_flush (); |
| gdk_threads_leave (); |
| } |
| |
| GdkPoint * |
| translate_points (JNIEnv *env, jintArray xpoints, jintArray ypoints, |
| jint npoints, jint x_offset, jint y_offset) |
| { |
| GdkPoint *points; |
| jint *x, *y; |
| int i; |
| |
| /* allocate one more point than necessary, in case we need to tack |
| 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); |
| |
| NSA_DEL_GLOBAL_REF (gdk_env(), peer); |
| |
| gdk_threads_enter (); |
| } |