graphics/android/graphics_android.c

/**
 * Navit, a modular navigation system.
 * Copyright (C) 2005-2008 Navit Team
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 * This program 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 this program; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA  02110-1301, USA.
 */

#include <unistd.h>
#include <glib.h>
#include "config.h"
#include "window.h"
#include "point.h"
#include "graphics.h"
#include "color.h"
#include "plugin.h"
#include "event.h"
#include "debug.h"
#include "callback.h"
#include "android.h"

int dummy;

struct graphics_priv {
        jclass NavitGraphicsClass;
        jmethodID NavitGraphics_draw_polyline, NavitGraphics_draw_polyline2, NavitGraphics_draw_polyline_dashed, NavitGraphics_draw_polygon, NavitGraphics_draw_polygon2, NavitGraphics_draw_rectangle, NavitGraphics_draw_circle, NavitGraphics_draw_text, NavitGraphics_draw_image, NavitGraphics_draw_bigmap, NavitGraphics_send_osd_values, NavitGraphics_draw_mode, NavitGraphics_draw_drag, NavitGraphics_overlay_disable, NavitGraphics_overlay_resize, NavitGraphics_SetCamera,NavitGraphicsClass_rotate_and_scale_bitmap;

        jclass PaintClass;
        jmethodID Paint_init,Paint_setStrokeWidth,Paint_setARGB;

        jobject NavitGraphics;
        jobject Paint;
        
        jclass BitmapFactoryClass;      
        jmethodID BitmapFactory_decodeFile, BitmapFactory_decodeResource;

        jclass BitmapClass;
        jmethodID Bitmap_getHeight, Bitmap_getWidth;

        jclass ContextClass;
        jmethodID Context_getResources;

        jclass ResourcesClass;
        jobject Resources;
        jmethodID Resources_getIdentifier;

        struct callback_list *cbl;
        struct window win;
};

struct graphics_font_priv {
        int size;
};

struct graphics_gc_priv {
        struct graphics_priv *gra;
        int linewidth;
        enum draw_mode_num mode;
        int a,r,g,b;
};

struct graphics_image_priv {
        jobject Bitmap;
        int width;
        int height;
        struct point hot;
};

static GHashTable *image_cache_hash = NULL;

static int
find_class_global(char *name, jclass *ret)
{
        *ret=(*jnienv)->FindClass(jnienv, name);
        if (! *ret) {
                dbg(0,"Failed to get Class %s\n",name);
                return 0;
        }
        (*jnienv)->NewGlobalRef(jnienv, *ret);
        return 1;
}

static int
find_method(jclass class, char *name, char *args, jmethodID *ret)
{
        *ret = (*jnienv)->GetMethodID(jnienv, class, name, args);
        if (*ret == NULL) {
                dbg(0,"Failed to get Method %s with signature %s\n",name,args);
                return 0;
        }
        return 1;
}

static int
find_static_method(jclass class, char *name, char *args, jmethodID *ret)
{
        *ret = (*jnienv)->GetStaticMethodID(jnienv, class, name, args);
        if (*ret == NULL) {
                dbg(0,"Failed to get static Method %s with signature %s\n",name,args);
                return 0;
        }
        return 1;
}

static void
graphics_destroy(struct graphics_priv *gr)
{
}

static void font_destroy(struct graphics_font_priv *font)
{
        g_free(font);
}

static struct graphics_font_methods font_methods = {
        font_destroy
};

static struct graphics_font_priv *font_new(struct graphics_priv *gr, struct graphics_font_methods *meth, char *font,  int size, int flags)
{
        struct graphics_font_priv *ret=g_new0(struct graphics_font_priv, 1);
        *meth=font_methods;

        ret->size=size;
        return ret;
}

static void
gc_destroy(struct graphics_gc_priv *gc)
{
        //dbg(0,"EEnter\n");

        g_free(gc);
}

static void
gc_set_linewidth(struct graphics_gc_priv *gc, int w)
{
    gc->linewidth = w;
}

static void
gc_set_dashes(struct graphics_gc_priv *gc, int w, int offset, unsigned char *dash_list, int n)
{
        // should call a java routine that does something like:
        //
        // paint.setPathEffect(new DashPathEffect(new float[] { 8, 3 }, 1));
}

static void
gc_set_foreground(struct graphics_gc_priv *gc, struct color *c)
{
    gc->r = c->r >> 8;
    gc->g = c->g >> 8;
    gc->b = c->b >> 8;
    gc->a = c->a >> 8;
}

static void
gc_set_background(struct graphics_gc_priv *gc, struct color *c)
{
}

static struct graphics_gc_methods gc_methods = {
        gc_destroy,
        gc_set_linewidth,
        gc_set_dashes,  
        gc_set_foreground,      
        gc_set_background       
};

static struct graphics_gc_priv *gc_new(struct graphics_priv *gr, struct graphics_gc_methods *meth)
{
        //dbg(0,"EEnter\n");

        struct graphics_gc_priv *ret=g_new0(struct graphics_gc_priv, 1);
        *meth=gc_methods;

        ret->gra = gr;
        ret->a = ret->r = ret->g = ret->b = 255;
        ret->linewidth=1;
        return ret;
}

static void image_destroy(struct graphics_image_priv *img)
{
    // unused?
}

static struct graphics_image_methods image_methods = {
        image_destroy
};


static struct graphics_image_priv *
image_new(struct graphics_priv *gra, struct graphics_image_methods *meth, char *path, int *w, int *h, struct point *hot, int rotation)
{
        //dbg(0,"EEnter\n");

        struct graphics_image_priv* ret = NULL;
        
        if ( !g_hash_table_lookup_extended( image_cache_hash, path, NULL, (gpointer)&ret) )
        {
                ret=g_new0(struct graphics_image_priv, 1);
                jstring string;
                int id;

                dbg(1,"enter %s\n",path);
                if (!strncmp(path,"res/drawable/",13)) {
                        jstring a=(*jnienv)->NewStringUTF(jnienv, "drawable");
                        jstring b=(*jnienv)->NewStringUTF(jnienv, "com.zoffcc.applications.zanavi");
                        char *path_noext=g_strdup(path+13);
                        char *pos=strrchr(path_noext, '.');
                        if (pos) 
                                *pos='\0';
                        dbg(1,"path_noext=%s\n",path_noext);
                        string = (*jnienv)->NewStringUTF(jnienv, path_noext);
                        g_free(path_noext);
                        id=(*jnienv)->CallIntMethod(jnienv, gra->Resources, gra->Resources_getIdentifier, string, a, b);
                        dbg(1,"id=%d\n",id);
                        if (id)
                                ret->Bitmap=(*jnienv)->CallStaticObjectMethod(jnienv, gra->BitmapFactoryClass, gra->BitmapFactory_decodeResource, gra->Resources, id);
                        (*jnienv)->DeleteLocalRef(jnienv, b);
                        (*jnienv)->DeleteLocalRef(jnienv, a);
                } else {
                        string = (*jnienv)->NewStringUTF(jnienv, path);
                        ret->Bitmap=(*jnienv)->CallStaticObjectMethod(jnienv, gra->BitmapFactoryClass, gra->BitmapFactory_decodeFile, string);
                        // there should be a check here, if we really want any rotation/scaling
                        // otherwise the call is overkill
                        ret->Bitmap=(*jnienv)->CallStaticObjectMethod(jnienv, gra->NavitGraphicsClass, gra->NavitGraphicsClass_rotate_and_scale_bitmap, ret->Bitmap, *w, *h, rotation);
                }
                dbg(1,"result=%p\n",ret->Bitmap);
                if (ret->Bitmap) {
                        (*jnienv)->NewGlobalRef(jnienv, ret->Bitmap);
                        (*jnienv)->DeleteLocalRef(jnienv, ret->Bitmap);
                        ret->width=(*jnienv)->CallIntMethod(jnienv, ret->Bitmap, gra->Bitmap_getWidth);
                        ret->height=(*jnienv)->CallIntMethod(jnienv, ret->Bitmap, gra->Bitmap_getHeight);
                        dbg(1,"w=%d h=%d for %s\n",ret->width,ret->height,path);
                        ret->hot.x=ret->width/2;
                        ret->hot.y=ret->height/2;
                } else {
                        g_free(ret);
                        ret=NULL;
                        dbg(0,"Failed to open %s\n",path);
                }
                (*jnienv)->DeleteLocalRef(jnienv, string);
                g_hash_table_insert(image_cache_hash, g_strdup( path ),  (gpointer)ret );
        }
        if (ret) {
                *w=ret->width;
                *h=ret->height;
                if (hot)
                        *hot=ret->hot;
        }

        return ret;
}

static void initPaint(struct graphics_priv *gra, struct graphics_gc_priv *gc)
{
        //dbg(0,"EEnter\n");

    float wf = gc->linewidth;
    (*jnienv)->CallVoidMethod(jnienv, gc->gra->Paint, gra->Paint_setStrokeWidth, wf);
    (*jnienv)->CallVoidMethod(jnienv, gc->gra->Paint, gra->Paint_setARGB, gc->a, gc->r, gc->g, gc->b);
}

static void
draw_lines(struct graphics_priv *gra, struct graphics_gc_priv *gc, struct point *p, int count)
{
        jint pc[count*2];
        int i;
        jintArray points;
        if (count <= 0)
                return;
        points = (*jnienv)->NewIntArray(jnienv,count*2);
        for (i = 0 ; i < count ; i++) {
                pc[i*2]=p[i].x;
                pc[i*2+1]=p[i].y;
        }
        initPaint(gra, gc);
        (*jnienv)->SetIntArrayRegion(jnienv, points, 0, count*2, pc);
        (*jnienv)->CallVoidMethod(jnienv, gra->NavitGraphics, gra->NavitGraphics_draw_polyline, gc->gra->Paint, points);
        (*jnienv)->DeleteLocalRef(jnienv, points);
}

static void
draw_lines2(struct graphics_priv *gra, struct graphics_gc_priv *gc, struct point *p, int count, int order, int oneway)
{
        jint pc[count*2];
        int i;
        jintArray points;
        if (count <= 0)
                return;
        points = (*jnienv)->NewIntArray(jnienv,count*2);
        for (i = 0 ; i < count ; i++) {
                pc[i*2]=p[i].x;
                pc[i*2+1]=p[i].y;
        }
        initPaint(gra, gc);
        (*jnienv)->SetIntArrayRegion(jnienv, points, 0, count*2, pc);
        (*jnienv)->CallVoidMethod(jnienv, gra->NavitGraphics, gra->NavitGraphics_draw_polyline2, gc->gra->Paint, points, order, oneway);
        (*jnienv)->DeleteLocalRef(jnienv, points);
}


static void
draw_lines_dashed(struct graphics_priv *gra, struct graphics_gc_priv *gc, struct point *p, int count, int order, int oneway)
{
        jint pc[count*2];
        int i;
        jintArray points;
        if (count <= 0)
                return;
        points = (*jnienv)->NewIntArray(jnienv,count*2);
        for (i = 0 ; i < count ; i++) {
                pc[i*2]=p[i].x;
                pc[i*2+1]=p[i].y;
        }
        initPaint(gra, gc);
        (*jnienv)->SetIntArrayRegion(jnienv, points, 0, count*2, pc);
        (*jnienv)->CallVoidMethod(jnienv, gra->NavitGraphics, gra->NavitGraphics_draw_polyline_dashed, gc->gra->Paint, points, order, oneway);
        (*jnienv)->DeleteLocalRef(jnienv, points);
}

static void
draw_polygon(struct graphics_priv *gra, struct graphics_gc_priv *gc, struct point *p, int count)
{
        jint pc[count*2];
        int i;
        jintArray points;
        if (count <= 0)
                return;
        points = (*jnienv)->NewIntArray(jnienv,count*2);
        for (i = 0 ; i < count ; i++) {
                pc[i*2]=p[i].x;
                pc[i*2+1]=p[i].y;
        }
        initPaint(gra, gc);
        (*jnienv)->SetIntArrayRegion(jnienv, points, 0, count*2, pc);
        (*jnienv)->CallVoidMethod(jnienv, gra->NavitGraphics, gra->NavitGraphics_draw_polygon, gc->gra->Paint, points);
        (*jnienv)->DeleteLocalRef(jnienv, points);
}

static void
draw_polygon2(struct graphics_priv *gra, struct graphics_gc_priv *gc, struct point *p, int count, int order, int oneway)
{
        jint pc[count*2];
        int i;
        jintArray points;
        if (count <= 0)
                return;
        points = (*jnienv)->NewIntArray(jnienv,count*2);
        for (i = 0 ; i < count ; i++) {
                pc[i*2]=p[i].x;
                pc[i*2+1]=p[i].y;
        }
        initPaint(gra, gc);
        (*jnienv)->SetIntArrayRegion(jnienv, points, 0, count*2, pc);
        (*jnienv)->CallVoidMethod(jnienv, gra->NavitGraphics, gra->NavitGraphics_draw_polygon2, gc->gra->Paint, points, order, oneway);
        (*jnienv)->DeleteLocalRef(jnienv, points);
}


static void
draw_rectangle(struct graphics_priv *gra, struct graphics_gc_priv *gc, struct point *p, int w, int h)
{
        initPaint(gra, gc);
        (*jnienv)->CallVoidMethod(jnienv, gra->NavitGraphics, gra->NavitGraphics_draw_rectangle, gc->gra->Paint, p->x, p->y, w, h);
}

static void
draw_circle(struct graphics_priv *gra, struct graphics_gc_priv *gc, struct point *p, int r)
{
        initPaint(gra, gc);
        (*jnienv)->CallVoidMethod(jnienv, gra->NavitGraphics, gra->NavitGraphics_draw_circle, gc->gra->Paint, p->x, p->y, r);
}


static void
draw_text(struct graphics_priv *gra, struct graphics_gc_priv *fg, struct graphics_gc_priv *bg, struct graphics_font_priv *font, char *text, struct point *p, int dx, int dy)
{
        dbg(1,"enter %s\n", text);
        initPaint(gra, fg);
        jstring string = (*jnienv)->NewStringUTF(jnienv, text);
        (*jnienv)->CallVoidMethod(jnienv, gra->NavitGraphics, gra->NavitGraphics_draw_text, fg->gra->Paint, p->x, p->y, string, font->size, dx, dy);
        (*jnienv)->DeleteLocalRef(jnienv, string);
}

static void
draw_image(struct graphics_priv *gra, struct graphics_gc_priv *fg, struct point *p, struct graphics_image_priv *img)
{
        //dbg(0,"EEnter\n");

        dbg(1,"enter %p\n",img);
        initPaint(gra, fg);
        (*jnienv)->CallVoidMethod(jnienv, gra->NavitGraphics, gra->NavitGraphics_draw_image, fg->gra->Paint, p->x, p->y, img->Bitmap);
        
}

static void
draw_bigmap(struct graphics_priv *gra, struct graphics_gc_priv *fg, int yaw, int order, float clat, float clng, int x, int y, int scx, int scy, int px, int py, int valid)
{
        //dbg(0,"EEnter\n");

        (*jnienv)->CallVoidMethod(jnienv, gra->NavitGraphics, gra->NavitGraphics_draw_bigmap, yaw, order, clat, clng, x, y, scx, scy, px, py, valid);   
}

static void
send_osd_values(struct graphics_priv *gra, struct graphics_gc_priv *fg, char *id, char *text1, char *text2, char *text3, int i1, int i2, int i3, int i4, float f1, float f2, float f3)
{
        //dbg(0,"EEnter\n");

        jstring string1 = (*jnienv)->NewStringUTF(jnienv, id);
        jstring string2 = (*jnienv)->NewStringUTF(jnienv, text1);
        jstring string3 = (*jnienv)->NewStringUTF(jnienv, text2);
        jstring string4 = (*jnienv)->NewStringUTF(jnienv, text3);
        (*jnienv)->CallVoidMethod(jnienv, gra->NavitGraphics, gra->NavitGraphics_send_osd_values, string1, string2, string3, string4, i1, i2, i3, i4, f1, f2, f3);
        (*jnienv)->DeleteLocalRef(jnienv, string1);
        (*jnienv)->DeleteLocalRef(jnienv, string2);
        (*jnienv)->DeleteLocalRef(jnienv, string3);
        (*jnienv)->DeleteLocalRef(jnienv, string4);
}


static void
draw_image_warp(struct graphics_priv *gr, struct graphics_gc_priv *fg, struct point *p, int count, char *data)
{
}

static void
draw_restore(struct graphics_priv *gr, struct point *p, int w, int h)
{
}

static void draw_drag(struct graphics_priv *gra, struct point *p)
{
        //dbg(0,"EEnter\n");

        (*jnienv)->CallVoidMethod(jnienv, gra->NavitGraphics, gra->NavitGraphics_draw_drag, p ? p->x : 0, p ? p->y : 0);
}

static void
background_gc(struct graphics_priv *gr, struct graphics_gc_priv *gc)
{
}

static void
draw_mode(struct graphics_priv *gra, enum draw_mode_num mode)
{
        //dbg(0,"EEnter\n");

        (*jnienv)->CallVoidMethod(jnienv, gra->NavitGraphics, gra->NavitGraphics_draw_mode, (int)mode);
}

static struct graphics_priv * overlay_new(struct graphics_priv *gr, struct graphics_methods *meth, struct point *p, int w, int h, int alpha, int wraparound);

static void *
get_data(struct graphics_priv *this, const char *type)
{
        //dbg(0,"EEnter\n");

        if (strcmp(type,"window"))
                return NULL;
        return &this->win;
}

static void image_free(struct graphics_priv *gr, struct graphics_image_priv *priv)
{
}

static void get_text_bbox(struct graphics_priv *gr, struct graphics_font_priv *font, char *text, int dx, int dy, struct point *ret, int estimate)
{
        //dbg(0,"EEnter\n");

        int len = g_utf8_strlen(text, -1);
        int xMin = 0;
        int yMin = 0;
        int yMax = 13*font->size/256;
        int xMax = 9*font->size*len/256;

        ret[0].x = xMin;
        ret[0].y = -yMin;
        ret[1].x = xMin;
        ret[1].y = -yMax;
        ret[2].x = xMax;
        ret[2].y = -yMax;
        ret[3].x = xMax;
        ret[3].y = -yMin;
}

static void overlay_disable(struct graphics_priv *gra, int disable)
{
        (*jnienv)->CallVoidMethod(jnienv, gra->NavitGraphics, gra->NavitGraphics_overlay_disable, disable);
}

static void overlay_resize(struct graphics_priv *gra, struct point *pnt, int w, int h, int alpha, int wraparound)
{
        (*jnienv)->CallVoidMethod(jnienv, gra->NavitGraphics, gra->NavitGraphics_overlay_resize, pnt ? pnt->x:0 , pnt ? pnt->y:0, w, h, alpha, wraparound);
}

static int
set_attr(struct graphics_priv *gra, struct attr *attr)
{
        switch (attr->type) {
        case attr_use_camera:
                (*jnienv)->CallVoidMethod(jnienv, gra->NavitGraphics, gra->NavitGraphics_SetCamera, attr->u.num);
                return 1;
        default:
                return 0;
        }
}

static struct graphics_methods graphics_methods = {
        graphics_destroy,
        draw_mode,
        draw_lines,
        draw_lines2,
        draw_lines_dashed,
        draw_polygon,
        draw_polygon2,
        draw_rectangle,
        draw_circle,
        draw_text,
        draw_image,
        draw_bigmap,
        send_osd_values,
        draw_image_warp,
        draw_restore,
        draw_drag,
        font_new,
        gc_new,
        background_gc,
        overlay_new,
        image_new,
        get_data,
        image_free,
        get_text_bbox,
        overlay_disable,
        overlay_resize,
        set_attr,
};

static void
resize_callback(struct graphics_priv *gra, int w, int h)
{
        //dbg(0,"EEnter\n");

        // dbg(0,"w=%d h=%d ok\n",w,h);
        callback_list_call_attr_2(gra->cbl, attr_resize, (void *)w, (void *)h);
}

static void
motion_callback(struct graphics_priv *gra, int x, int y)
{
        //dbg(0,"EEnter\n");

        struct point p;
        p.x=x;
        p.y=y;
        callback_list_call_attr_1(gra->cbl, attr_motion, (void *)&p);
}

static void
keypress_callback(struct graphics_priv *gra, char *s)
{
        callback_list_call_attr_1(gra->cbl, attr_keypress, s);
}

static void
button_callback(struct graphics_priv *gra, int pressed, int button, int x, int y)
{
        //dbg(0,"EEnter\n");

        struct point p;
        p.x=x;
        p.y=y;
        // dbg(0,"XXXXXXXYYYYYYYYY\n");
        callback_list_call_attr_3(gra->cbl, attr_button, (void *)pressed, (void *)button, (void *)&p);
}


static int
set_activity(jobject graphics)
{
        //dbg(0,"EEnter\n");

        jclass ActivityClass;
        jmethodID cid;

        ActivityClass = (*jnienv)->GetObjectClass(jnienv, android_activity);
        // dbg(0,"at 5\n");
        if (ActivityClass == NULL) {
                dbg(0,"no activity class found\n");
                return 0;
        }
        // dbg(0,"at 6\n");
        cid = (*jnienv)->GetMethodID(jnienv, ActivityClass, "setContentView", "(Landroid/view/View;)V");
        if (cid == NULL) {
                dbg(0,"no setContentView method found\n");
                return 0;
        }
        // dbg(0,"at 7\n");
        (*jnienv)->CallVoidMethod(jnienv, android_activity, cid, graphics);
        // dbg(0,"at 8\n");
        return 1;
}

static int
graphics_android_init(struct graphics_priv *ret, struct graphics_priv *parent, struct point *pnt, int w, int h, int alpha, int wraparound, int use_camera)
{
        struct callback *cb;
        jmethodID cid;

        dbg(0,"at 2 jnienv=%p\n",jnienv);
        if (!find_class_global("android/graphics/Paint", &ret->PaintClass))
                return 0;
        if (!find_method(ret->PaintClass, "<init>", "(I)V", &ret->Paint_init))
                return 0;
        if (!find_method(ret->PaintClass, "setARGB", "(IIII)V", &ret->Paint_setARGB))
                return 0;
        if (!find_method(ret->PaintClass, "setStrokeWidth", "(F)V", &ret->Paint_setStrokeWidth))
                return 0;

        if (!find_class_global("android/graphics/BitmapFactory", &ret->BitmapFactoryClass))
                return 0;
        if (!find_static_method(ret->BitmapFactoryClass, "decodeFile", "(Ljava/lang/String;)Landroid/graphics/Bitmap;", &ret->BitmapFactory_decodeFile))
                return 0;
        if (!find_static_method(ret->BitmapFactoryClass, "decodeResource", "(Landroid/content/res/Resources;I)Landroid/graphics/Bitmap;", &ret->BitmapFactory_decodeResource))
                return 0;

        if (!find_class_global("android/graphics/Bitmap", &ret->BitmapClass))
                return 0;
        if (!find_method(ret->BitmapClass, "getHeight", "()I", &ret->Bitmap_getHeight))
                return 0;
        if (!find_method(ret->BitmapClass, "getWidth", "()I", &ret->Bitmap_getWidth))
                return 0;

        if (!find_class_global("android/content/Context", &ret->ContextClass))
                return 0;
        if (!find_method(ret->ContextClass, "getResources", "()Landroid/content/res/Resources;", &ret->Context_getResources))
                return 0;
        

        ret->Resources=(*jnienv)->CallObjectMethod(jnienv, android_activity, ret->Context_getResources);
        if (ret->Resources)
                (*jnienv)->NewGlobalRef(jnienv, ret->Resources);
        if (!find_class_global("android/content/res/Resources", &ret->ResourcesClass))
                return 0;
        if (!find_method(ret->ResourcesClass, "getIdentifier", "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)I", &ret->Resources_getIdentifier))
                return 0;

        if (!find_class_global("com/zoffcc/applications/zanavi/NavitGraphics", &ret->NavitGraphicsClass))
                return 0;
        dbg(0,"at 3\n");
        cid = (*jnienv)->GetMethodID(jnienv, ret->NavitGraphicsClass, "<init>", "(Landroid/app/Activity;Lcom/zoffcc/applications/zanavi/NavitGraphics;IIIIIII)V");
        if (cid == NULL) {
                dbg(0,"no method found\n");
                return 0; /* exception thrown */
        }
        dbg(0,"at 4 android_activity=%p\n",android_activity);
        ret->NavitGraphics=(*jnienv)->NewObject(jnienv, ret->NavitGraphicsClass, cid, android_activity, parent ? parent->NavitGraphics : NULL, pnt ? pnt->x:0 , pnt ? pnt->y:0, w, h, alpha, wraparound, use_camera);
        dbg(0,"result=%p\n",ret->NavitGraphics);
        if (ret->NavitGraphics)
                (*jnienv)->NewGlobalRef(jnienv, ret->NavitGraphics);

        /* Create a single global Paint, otherwise android will quickly run out
         * of global refs.*/
        /* 0x101 = text kerning (default), antialiasing */
        ret->Paint=(*jnienv)->NewObject(jnienv, ret->PaintClass, ret->Paint_init, 0x101);

        dbg(0,"result=%p\n",ret->Paint);
        if (ret->Paint)
                (*jnienv)->NewGlobalRef(jnienv, ret->Paint);

        cid = (*jnienv)->GetMethodID(jnienv, ret->NavitGraphicsClass, "setSizeChangedCallback", "(I)V");
        if (cid == NULL) {
                dbg(0,"no SetResizeCallback method found\n");
                return 0; /* exception thrown */
        }
        cb=callback_new_1(callback_cast(resize_callback), ret);
        (*jnienv)->CallVoidMethod(jnienv, ret->NavitGraphics, cid, (int)cb);

        cid = (*jnienv)->GetMethodID(jnienv, ret->NavitGraphicsClass, "setButtonCallback", "(I)V");
        if (cid == NULL) {
                dbg(0,"no SetButtonCallback method found\n");
                return 0; /* exception thrown */
        }
        cb=callback_new_1(callback_cast(button_callback), ret);
        (*jnienv)->CallVoidMethod(jnienv, ret->NavitGraphics, cid, (int)cb);

        cid = (*jnienv)->GetMethodID(jnienv, ret->NavitGraphicsClass, "setMotionCallback", "(I)V");
        if (cid == NULL) {
                dbg(0,"no SetMotionCallback method found\n");
                return 0; /* exception thrown */
        }
        cb=callback_new_1(callback_cast(motion_callback), ret);
        (*jnienv)->CallVoidMethod(jnienv, ret->NavitGraphics, cid, (int)cb);


        // public Bitmap rotate_and_scale_bitmap(Bitmap in, int w, int h, int angle)

        if (!find_static_method(ret->NavitGraphicsClass, "rotate_and_scale_bitmap", "(Landroid/graphics/Bitmap;III)Landroid/graphics/Bitmap;", &ret->NavitGraphicsClass_rotate_and_scale_bitmap))
                return 0;

        //
        //cid = (*jnienv)->GetMethodID(jnienv, ret->NavitGraphicsClass, "rotate_and_scale_bitmap", "(Landroid/graphics/Bitmap;III)Landroid/graphics/Bitmap;");
        //if (cid == NULL) {
        //      dbg(0,"no rotate_and_scale_bitmap method found\n");
        //      return 0; /* exception thrown */
        //}

        cid = (*jnienv)->GetMethodID(jnienv, ret->NavitGraphicsClass, "setKeypressCallback", "(I)V");
        if (cid == NULL) {
                dbg(0,"no SetKeypressCallback method found\n");
                return 0; /* exception thrown */
        }
        cb=callback_new_1(callback_cast(keypress_callback), ret);
        (*jnienv)->CallVoidMethod(jnienv, ret->NavitGraphics, cid, (int)cb);

        if (!find_method(ret->NavitGraphicsClass, "draw_polyline", "(Landroid/graphics/Paint;[I)V", &ret->NavitGraphics_draw_polyline))
                return 0;
        if (!find_method(ret->NavitGraphicsClass, "draw_polyline2", "(Landroid/graphics/Paint;[III)V", &ret->NavitGraphics_draw_polyline2))
                return 0;
        if (!find_method(ret->NavitGraphicsClass, "draw_polyline_dashed", "(Landroid/graphics/Paint;[III)V", &ret->NavitGraphics_draw_polyline_dashed))
                return 0;
        if (!find_method(ret->NavitGraphicsClass, "draw_polygon", "(Landroid/graphics/Paint;[I)V", &ret->NavitGraphics_draw_polygon))
                return 0;
        if (!find_method(ret->NavitGraphicsClass, "draw_polygon2", "(Landroid/graphics/Paint;[III)V", &ret->NavitGraphics_draw_polygon2))
                return 0;
        if (!find_method(ret->NavitGraphicsClass, "draw_rectangle", "(Landroid/graphics/Paint;IIII)V", &ret->NavitGraphics_draw_rectangle))
                return 0;
        if (!find_method(ret->NavitGraphicsClass, "draw_circle", "(Landroid/graphics/Paint;III)V", &ret->NavitGraphics_draw_circle))
                return 0;
        if (!find_method(ret->NavitGraphicsClass, "draw_text", "(Landroid/graphics/Paint;IILjava/lang/String;III)V", &ret->NavitGraphics_draw_text))
                return 0;
        if (!find_method(ret->NavitGraphicsClass, "draw_image", "(Landroid/graphics/Paint;IILandroid/graphics/Bitmap;)V", &ret->NavitGraphics_draw_image))
                return 0;
        if (!find_method(ret->NavitGraphicsClass, "draw_bigmap", "(IIFFIIIIIII)V", &ret->NavitGraphics_draw_bigmap))
                return 0;
        if (!find_method(ret->NavitGraphicsClass, "send_osd_values", "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;IIIIFFF)V", &ret->NavitGraphics_send_osd_values))
                return 0;
        if (!find_method(ret->NavitGraphicsClass, "draw_mode", "(I)V", &ret->NavitGraphics_draw_mode))
                return 0;
        if (!find_method(ret->NavitGraphicsClass, "draw_drag", "(II)V", &ret->NavitGraphics_draw_drag))
                return 0;
        if (!find_method(ret->NavitGraphicsClass, "overlay_disable", "(I)V", &ret->NavitGraphics_overlay_disable))
                return 0;
        if (!find_method(ret->NavitGraphicsClass, "overlay_resize", "(IIIIII)V", &ret->NavitGraphics_overlay_resize))
                return 0;
        if (!find_method(ret->NavitGraphicsClass, "SetCamera", "(I)V", &ret->NavitGraphics_SetCamera))
                return 0;
#if 0
        set_activity(ret->NavitGraphics);
#endif
        return 1;
}

static int
graphics_android_fullscreen(struct window *win, int on)
{
        return 1;
}

static jclass NavitClass;
static jmethodID Navit_disableSuspend, Navit_exit;

static void
graphics_android_disable_suspend(struct window *win)
{
        //dbg(0,"enter\n");
        (*jnienv)->CallVoidMethod(jnienv, android_activity, Navit_disableSuspend);
}


static struct graphics_priv *
graphics_android_new(struct navit *nav, struct graphics_methods *meth, struct attr **attrs, struct callback_list *cbl)
{
        //dbg(0,"EEnter\n");

        struct graphics_priv *ret;
        struct attr *attr;
        int use_camera=0;
        if (!event_request_system("android","graphics_android"))
                return NULL;
        ret=g_new0(struct graphics_priv, 1);

        ret->cbl=cbl;
        *meth=graphics_methods;
        ret->win.priv=ret;
        ret->win.fullscreen=graphics_android_fullscreen;
        ret->win.disable_suspend=graphics_android_disable_suspend;
        if ((attr=attr_search(attrs, NULL, attr_use_camera))) {
                use_camera=attr->u.num;
        }
        image_cache_hash = g_hash_table_new(g_str_hash, g_str_equal);
        if (graphics_android_init(ret, NULL, NULL, 0, 0, 0, 0, use_camera)) {
                //dbg(0,"returning %p\n",ret);
                return ret;
        } else {
                g_free(ret);
                return NULL;
        }
}

static struct graphics_priv *
overlay_new(struct graphics_priv *gr, struct graphics_methods *meth, struct point *p, int w, int h, int alpha, int wraparound)
{
        //dbg(0,"EEnter\n");

        struct graphics_priv *ret=g_new0(struct graphics_priv, 1);
        *meth=graphics_methods;
        if (graphics_android_init(ret, gr, p, w, h, alpha, wraparound, 0)) {
                dbg(0,"returning %p\n",ret);
                return ret;
        } else {
                g_free(ret);
                return NULL;
        }
}


static void
event_android_main_loop_run(void)
{
        dbg(0,"enter\n");
}

static void event_android_main_loop_quit(void)
{
        dbg(0,"enter\n");
        // exit(0);
        (*jnienv)->CallVoidMethod(jnienv, android_activity, Navit_exit);
}


static jclass NavitTimeoutClass;
static jmethodID NavitTimeout_init;
static jmethodID NavitTimeout_remove;

static jclass NavitIdleClass;
static jmethodID NavitIdle_init;
static jmethodID NavitIdle_remove;

static jclass NavitWatchClass;
static jmethodID NavitWatch_init;
static jmethodID NavitWatch_remove;

static struct event_watch *
event_android_add_watch(void *h, enum event_watch_cond cond, struct callback *cb)
{
        jobject ret;
        ret=(*jnienv)->NewObject(jnienv, NavitWatchClass, NavitWatch_init, (int) h, (int) cond, (int)cb);
        //dbg(0,"result for %p,%d,%p=%p\n",h,cond,cb,ret);
        if (ret)
                (*jnienv)->NewGlobalRef(jnienv, ret);
        return (struct event_watch *)ret;
}

static void
event_android_remove_watch(struct event_watch *ev)
{
        //dbg(0,"enter %p\n",ev);
        if (ev) {
                jobject obj=(jobject )ev;
                (*jnienv)->CallVoidMethod(jnienv, obj, NavitWatch_remove);
                (*jnienv)->DeleteGlobalRef(jnienv, obj);
        }
}

static struct event_timeout *
event_android_add_timeout(int timeout, int multi, struct callback *cb)
{
        //dbg(0,"EEnter\n");

        jobject ret;
        ret=(*jnienv)->NewObject(jnienv, NavitTimeoutClass, NavitTimeout_init, timeout, multi, (int)cb);
        dbg(1,"result for %d,%d,%p=%p\n",timeout,multi,cb,ret);
        if (ret)
                (*jnienv)->NewGlobalRef(jnienv, ret);
        return (struct event_timeout *)ret;
}

static void
event_android_remove_timeout(struct event_timeout *to)
{
        //dbg(0,"EEnter\n");

        dbg(1,"enter %p\n",to);
        if (to) {
                jobject obj=(jobject )to;
                (*jnienv)->CallVoidMethod(jnienv, obj, NavitTimeout_remove);
                (*jnienv)->DeleteGlobalRef(jnienv, obj);
        }
}


static struct event_idle *
event_android_add_idle(int priority, struct callback *cb)
{
        //dbg(0,"EEnter\n");

#if 0
        jobject ret;
        dbg(1,"enter\n");
        ret=(*jnienv)->NewObject(jnienv, NavitIdleClass, NavitIdle_init, (int)cb);
        dbg(1,"result for %p=%p\n",cb,ret);
        if (ret)
                (*jnienv)->NewGlobalRef(jnienv, ret);
        return (struct event_idle *)ret;
#endif
        return (struct event_idle *)event_android_add_timeout(1, 1, cb);
}

static void
event_android_remove_idle(struct event_idle *ev)
{
        //dbg(0,"EEnter\n");

#if 0
        dbg(1,"enter %p\n",ev);
        if (ev) {
                jobject obj=(jobject )ev;
                (*jnienv)->CallVoidMethod(jnienv, obj, NavitIdle_remove);
                (*jnienv)->DeleteGlobalRef(jnienv, obj);
        }
#endif
        event_android_remove_timeout((struct event_timeout *)ev);
}

static void
event_android_call_callback(struct callback_list *cb)
{
        // dbg(0,"enter\n");
}

static struct event_methods event_android_methods = {
        event_android_main_loop_run,
        event_android_main_loop_quit,
        event_android_add_watch,
        event_android_remove_watch,
        event_android_add_timeout,
        event_android_remove_timeout,
        event_android_add_idle,
        event_android_remove_idle,
        event_android_call_callback,
};

static struct event_priv *
event_android_new(struct event_methods *meth)
{
        //dbg(0,"enter\n");
        if (!find_class_global("com/zoffcc/applications/zanavi/NavitTimeout", &NavitTimeoutClass))
                return NULL;
        NavitTimeout_init = (*jnienv)->GetMethodID(jnienv, NavitTimeoutClass, "<init>", "(IZI)V");
        if (NavitTimeout_init == NULL) 
                return NULL;
        NavitTimeout_remove = (*jnienv)->GetMethodID(jnienv, NavitTimeoutClass, "remove", "()V");
        if (NavitTimeout_remove == NULL) 
                return NULL;
#if 0
        if (!find_class_global("com/zoffcc/applications/zanavi/NavitIdle", &NavitIdleClass))
                return NULL;
        NavitIdle_init = (*jnienv)->GetMethodID(jnienv, NavitIdleClass, "<init>", "(I)V");
        if (NavitIdle_init == NULL) 
                return NULL;
        NavitIdle_remove = (*jnienv)->GetMethodID(jnienv, NavitIdleClass, "remove", "()V");
        if (NavitIdle_remove == NULL) 
                return NULL;
#endif

        if (!find_class_global("com/zoffcc/applications/zanavi/NavitWatch", &NavitWatchClass))
                return NULL;
        NavitWatch_init = (*jnienv)->GetMethodID(jnienv, NavitWatchClass, "<init>", "(III)V");
        if (NavitWatch_init == NULL) 
                return NULL;
        NavitWatch_remove = (*jnienv)->GetMethodID(jnienv, NavitWatchClass, "remove", "()V");
        if (NavitWatch_remove == NULL) 
                return NULL;

        if (!find_class_global("com/zoffcc/applications/zanavi/Navit", &NavitClass))
                return NULL;
        Navit_disableSuspend = (*jnienv)->GetMethodID(jnienv, NavitClass, "disableSuspend", "()V");
        if (Navit_disableSuspend == NULL) 
                return NULL;
        Navit_exit = (*jnienv)->GetMethodID(jnienv, NavitClass, "exit", "()V");
        if (Navit_exit == NULL) 
                return NULL;
        //dbg(0,"ok\n");
    *meth=event_android_methods;
    return NULL;
}


void
plugin_init(void)
{
        //dbg(0,"enter\n");
        plugin_register_graphics_type("android", graphics_android_new);
        plugin_register_event_type("android", event_android_new);
}