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      1 /*
      2  * Copyright (C) 2007 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef _MINUI_H_
     18 #define _MINUI_H_
     19 
     20 #include <stdbool.h>
     21 
     22 #ifdef __cplusplus
     23 extern "C" {
     24 #endif
     25 
     26 typedef void* gr_surface;
     27 typedef unsigned short gr_pixel;
     28 
     29 int gr_init(void);
     30 void gr_exit(void);
     31 
     32 int gr_fb_width(void);
     33 int gr_fb_height(void);
     34 gr_pixel *gr_fb_data(void);
     35 void gr_flip(void);
     36 void gr_fb_blank(bool blank);
     37 
     38 void gr_color(unsigned char r, unsigned char g, unsigned char b, unsigned char a);
     39 void gr_fill(int x1, int y1, int x2, int y2);
     40 int gr_text(int x, int y, const char *s, int bold);
     41  void gr_texticon(int x, int y, gr_surface icon);
     42 int gr_measure(const char *s);
     43 void gr_font_size(int *x, int *y);
     44 
     45 void gr_blit(gr_surface source, int sx, int sy, int w, int h, int dx, int dy);
     46 unsigned int gr_get_width(gr_surface surface);
     47 unsigned int gr_get_height(gr_surface surface);
     48 
     49 // input event structure, include <linux/input.h> for the definition.
     50 // see http://www.mjmwired.net/kernel/Documentation/input/ for info.
     51 struct input_event;
     52 
     53 typedef int (*ev_callback)(int fd, short revents, void *data);
     54 typedef int (*ev_set_key_callback)(int code, int value, void *data);
     55 
     56 int ev_init(ev_callback input_cb, void *data);
     57 void ev_exit(void);
     58 int ev_add_fd(int fd, ev_callback cb, void *data);
     59 int ev_sync_key_state(ev_set_key_callback set_key_cb, void *data);
     60 
     61 /* timeout has the same semantics as for poll
     62  *    0 : don't block
     63  *  < 0 : block forever
     64  *  > 0 : block for 'timeout' milliseconds
     65  */
     66 int ev_wait(int timeout);
     67 
     68 int ev_get_input(int fd, short revents, struct input_event *ev);
     69 void ev_dispatch(void);
     70 
     71 // Resources
     72 
     73 // Returns 0 if no error, else negative.
     74 int res_create_surface(const char* name, gr_surface* pSurface);
     75 int res_create_localized_surface(const char* name, gr_surface* pSurface);
     76 void res_free_surface(gr_surface surface);
     77 
     78 #ifdef __cplusplus
     79 }
     80 #endif
     81 
     82 #endif
     83