1 /* 2 * Copyright (C) 2014 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 _GRAPHICS_H_ 18 #define _GRAPHICS_H_ 19 20 #ifdef __cplusplus 21 extern "C" { 22 #endif 23 24 #include <stdbool.h> 25 #include "minui.h" 26 27 typedef struct minui_backend { 28 // Initializes the backend and returns a gr_surface to draw into. 29 gr_surface (*init)(struct minui_backend*); 30 31 // Causes the current drawing surface (returned by the most recent 32 // call to flip() or init()) to be displayed, and returns a new 33 // drawing surface. 34 gr_surface (*flip)(struct minui_backend*); 35 36 // Blank (or unblank) the screen. 37 void (*blank)(struct minui_backend*, bool); 38 39 // Device cleanup when drawing is done. 40 void (*exit)(struct minui_backend*); 41 } minui_backend; 42 43 minui_backend* open_fbdev(); 44 minui_backend* open_adf(); 45 46 #ifdef __cplusplus 47 } 48 #endif 49 50 #endif 51
