nuclear@0: #include <stdio.h>
nuclear@0: #include <stdlib.h>
nuclear@0: #include <string.h>
nuclear@0: #include <GLES/gl.h>
nuclear@0: #include <GLES/glext.h>
nuclear@0: #include <EGL/egl.h>
nuclear@0: #include <android_native_app_glue.h>
nuclear@0: #include "app.h"
nuclear@0: #include "logger.h"
nuclear@0: 
nuclear@0: static void handle_command(struct android_app *app, int32_t cmd);
nuclear@0: static int handle_input(struct android_app *app, AInputEvent *ev);
nuclear@0: static int handle_touch_input(struct android_app *app, AInputEvent *ev);
nuclear@0: static int init_gl(void);
nuclear@0: static void destroy_gl(void);
nuclear@0: 
nuclear@0: static struct android_app *app;
nuclear@0: static int win_width, win_height;
nuclear@0: 
nuclear@0: void android_main(struct android_app *app_ptr)
nuclear@0: {
nuclear@0: 	app_dummy();
nuclear@0: 	app = app_ptr;
nuclear@0: 
nuclear@0: 	app->onAppCmd = handle_command;
nuclear@0: 	app->onInputEvent = handle_input;
nuclear@0: 
nuclear@0: 	start_logger();
nuclear@0: 
nuclear@0: 	for(;;) {
nuclear@0: 		int num_events;
nuclear@0: 		struct android_poll_source *pollsrc;
nuclear@0: 
nuclear@0: 		while(ALooper_pollAll(0, 0, &num_events, (void**)&pollsrc) >= 0) {
nuclear@0: 			if(pollsrc) {
nuclear@0: 				pollsrc->process(app, pollsrc);
nuclear@0: 			}
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		if(app->destroyRequested) {
nuclear@0: 			return;
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		app_display();
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: static void handle_command(struct android_app *app, int32_t cmd)
nuclear@0: {
nuclear@0: 	switch(cmd) {
nuclear@0: 	case APP_CMD_SAVE_STATE:
nuclear@0: 		/* save the application state to be reloaded on restart if needed */
nuclear@0: 		break;
nuclear@0: 
nuclear@0: 	case APP_CMD_INIT_WINDOW:
nuclear@0: 		if(init_gl() == -1) {
nuclear@0: 			exit(1);
nuclear@0: 		}
nuclear@0: 		/* initialize the application */
nuclear@0: 		if(app_init() == -1) {
nuclear@0: 			exit(1);	/* initialization failed, quit */
nuclear@0: 		}
nuclear@0: 		break;
nuclear@0: 
nuclear@0: 	case APP_CMD_TERM_WINDOW:
nuclear@0: 		/* cleanup */
nuclear@0: 		app_cleanup();
nuclear@0: 		destroy_gl();
nuclear@0: 		break;
nuclear@0: 
nuclear@0: 	case APP_CMD_GAINED_FOCUS:
nuclear@0: 		/* app focused */
nuclear@0: 		break;
nuclear@0: 
nuclear@0: 	case APP_CMD_LOST_FOCUS:
nuclear@0: 		/* app lost focus */
nuclear@0: 		break;
nuclear@0: 
nuclear@0: 	case APP_CMD_WINDOW_RESIZED:
nuclear@0: 	case APP_CMD_CONFIG_CHANGED:
nuclear@0: 		{
nuclear@0: 			int nx = ANativeWindow_getWidth(app->window);
nuclear@0: 			int ny = ANativeWindow_getHeight(app->window);
nuclear@0: 			if(nx != win_width || ny != win_height) {
nuclear@0: 				app_resize(nx, ny);
nuclear@0: 				win_width = nx;
nuclear@0: 				win_height = ny;
nuclear@0: 			}
nuclear@0: 		}
nuclear@0: 		break;
nuclear@0: 
nuclear@0: 	default:
nuclear@0: 		break;
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: static int handle_input(struct android_app *app, AInputEvent *ev)
nuclear@0: {
nuclear@0: 	int evtype = AInputEvent_getType(ev);
nuclear@0: 
nuclear@0: 	switch(evtype) {
nuclear@0: 	case AINPUT_EVENT_TYPE_MOTION:
nuclear@0: 		return handle_touch_input(app, ev);
nuclear@0: 
nuclear@0: 	default:
nuclear@0: 		break;
nuclear@0: 	}
nuclear@0: 	return 0;
nuclear@0: }
nuclear@0: 
nuclear@0: #define MAX_TOUCH_IDS	32
nuclear@0: 
nuclear@0: static int handle_touch_input(struct android_app *app, AInputEvent *ev)
nuclear@0: {
nuclear@0: 	int x, y, idx, touch_id;
nuclear@0: 	unsigned int action;
nuclear@0: 	static int prev_pos[MAX_TOUCH_IDS][2];
nuclear@0: 
nuclear@0: 	action = AMotionEvent_getAction(ev);
nuclear@0: 
nuclear@0: 	idx = (action & AMOTION_EVENT_ACTION_POINTER_INDEX_MASK) >>
nuclear@0: 		AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT;
nuclear@0: 	touch_id = AMotionEvent_getPointerId(ev, idx);
nuclear@0: 
nuclear@0: 	x = AMotionEvent_getX(ev, idx);
nuclear@0: 	y = AMotionEvent_getY(ev, idx);
nuclear@0: 
nuclear@0: 	switch(action & AMOTION_EVENT_ACTION_MASK) {
nuclear@0: 	case AMOTION_EVENT_ACTION_DOWN:
nuclear@0: 	case AMOTION_EVENT_ACTION_POINTER_DOWN:
nuclear@0: 		app_touch(touch_id, 1, x, y);
nuclear@0: 		if(touch_id < MAX_TOUCH_IDS) {
nuclear@0: 			prev_pos[touch_id][0] = x;
nuclear@0: 			prev_pos[touch_id][1] = y;
nuclear@0: 		}
nuclear@0: 		break;
nuclear@0: 
nuclear@0: 	case AMOTION_EVENT_ACTION_UP:
nuclear@0: 	case AMOTION_EVENT_ACTION_POINTER_UP:
nuclear@0: 		app_touch(touch_id, 0, x, y);
nuclear@0: 		if(touch_id < MAX_TOUCH_IDS) {
nuclear@0: 			prev_pos[touch_id][0] = x;
nuclear@0: 			prev_pos[touch_id][1] = y;
nuclear@0: 		}
nuclear@0: 		break;
nuclear@0: 
nuclear@0: 	case AMOTION_EVENT_ACTION_MOVE:
nuclear@0: 		{
nuclear@0: 			int i, pcount = AMotionEvent_getPointerCount(ev);
nuclear@0: 			for(i=0; i<pcount; i++) {
nuclear@0: 				int id = AMotionEvent_getPointerId(ev, i);
nuclear@0: 				if(id < MAX_TOUCH_IDS && x != prev_pos[id][0] && y != prev_pos[id][1]) {
nuclear@0: 					app_drag(id, x, y);
nuclear@0: 					prev_pos[id][0] = x;
nuclear@0: 					prev_pos[id][1] = y;
nuclear@0: 				}
nuclear@0: 			}
nuclear@0: 		}
nuclear@0: 		break;
nuclear@0: 
nuclear@0: 	default:
nuclear@0: 		break;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	return 1;
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: static int init_gl(void)
nuclear@0: {
nuclear@0: 	static const int eglattr[] = {
nuclear@0: 		EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
nuclear@0: 		EGL_RENDERABLE_TYPE, EGL_OPENGL_ES_BIT,
nuclear@0: 		EGL_RED_SIZE, 5,
nuclear@0: 		EGL_GREEN_SIZE, 5,
nuclear@0: 		EGL_BLUE_SIZE, 5,
nuclear@0: 		EGL_DEPTH_SIZE, 16,
nuclear@0: 		EGL_NONE
nuclear@0: 	};
nuclear@0: 	static const int ctxattr[] = { EGL_CONTEXT_CLIENT_VERSION, 1, EGL_NONE };
nuclear@0: 
nuclear@0: 	EGLConfig eglcfg;
nuclear@0: 	int count, vis;
nuclear@0: 
nuclear@0: 	dpy = eglGetDisplay(EGL_DEFAULT_DISPLAY);
nuclear@0: 	if(!dpy || !eglInitialize(dpy, 0, 0)) {
nuclear@0: 		fprintf(stderr, "failed to initialize EGL\n");
nuclear@0: 		destroy_gl();
nuclear@0: 		return -1;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	if(!eglChooseConfig(dpy, eglattr, &eglcfg, 1, &count)) {
nuclear@0: 		fprintf(stderr, "no matching EGL config found\n");
nuclear@0: 		destroy_gl();
nuclear@0: 		return -1;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	/* configure the native window visual according to the chosen EGL config */
nuclear@0: 	eglGetConfigAttrib(dpy, &eglcfg, EGL_NATIVE_VISUAL_ID, &vis);
nuclear@0: 	ANativeWindow_setBuffersGeometry(app->window, 0, 0, vis);
nuclear@0: 
nuclear@0: 	if(!(surf = eglCreateWindowSurface(dpy, eglcfg, app->window, 0))) {
nuclear@0: 		fprintf(stderr, "failed to create window\n");
nuclear@0: 		destroy_gl();
nuclear@0: 		return -1;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	if(!(ctx = eglCreateContext(dpy, eglcfg, EGL_NO_CONTEXT, ctxattr))) {
nuclear@0: 		fprintf(stderr, "failed to create OpenGL ES context\n");
nuclear@0: 		destroy_gl();
nuclear@0: 		return -1;
nuclear@0: 	}
nuclear@0: 	eglMakeCurrent(dpy, surf, surf, ctx);
nuclear@0: 
nuclear@0: 	eglQuerySurface(dpy, surf, EGL_WIDTH, &win_width);
nuclear@0: 	eglQuerySurface(dpy, surf, EGL_HEIGHT, &win_height);
nuclear@0: 	app_resize(win_width, win_height);
nuclear@0: 
nuclear@0: 	return 0;
nuclear@0: }
nuclear@0: 
nuclear@0: static void destroy_gl(void)
nuclear@0: {
nuclear@0: 	if(!dpy) return;
nuclear@0: 
nuclear@0: 	eglMakeCurrent(dpy, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
nuclear@0: 
nuclear@0: 	if(ctx) {
nuclear@0: 		eglDestroyContext(dpy, ctx);
nuclear@0: 		ctx = 0;
nuclear@0: 	}
nuclear@0: 	if(surf) {
nuclear@0: 		eglDestroySurface(dpy, surf);
nuclear@0: 		surf = 0;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	eglTerminate(dpy);
nuclear@0: 	dpy = 0;
nuclear@0: }
nuclear@0: