441031dadc
If a key is down prior to the time of initialization, we would not get the down event for the key, and thus think that the key is not pressed. Add an interface that allows one to provide a callback to execute on all keys that are currently down. Change-Id: I2a4096c0cb4c7c7a9a80d207835f168a0b418413 Signed-off-by: Dima Zavin <dima@android.com>
73 lines
2.2 KiB
C
73 lines
2.2 KiB
C
/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _MINUI_H_
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#define _MINUI_H_
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#include <stdbool.h>
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typedef void* gr_surface;
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typedef unsigned short gr_pixel;
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int gr_init(void);
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void gr_exit(void);
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int gr_fb_width(void);
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int gr_fb_height(void);
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gr_pixel *gr_fb_data(void);
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void gr_flip(void);
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void gr_fb_blank(bool blank);
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void gr_color(unsigned char r, unsigned char g, unsigned char b, unsigned char a);
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void gr_fill(int x, int y, int w, int h);
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int gr_text(int x, int y, const char *s);
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int gr_measure(const char *s);
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void gr_font_size(int *x, int *y);
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void gr_blit(gr_surface source, int sx, int sy, int w, int h, int dx, int dy);
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unsigned int gr_get_width(gr_surface surface);
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unsigned int gr_get_height(gr_surface surface);
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// input event structure, include <linux/input.h> for the definition.
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// see http://www.mjmwired.net/kernel/Documentation/input/ for info.
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struct input_event;
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typedef int (*ev_callback)(int fd, short revents, void *data);
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typedef int (*ev_set_key_callback)(int code, int value, void *data);
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int ev_init(ev_callback input_cb, void *data);
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void ev_exit(void);
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int ev_add_fd(int fd, ev_callback cb, void *data);
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int ev_sync_key_state(ev_set_key_callback set_key_cb, void *data);
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/* timeout has the same semantics as for poll
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* 0 : don't block
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* < 0 : block forever
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* > 0 : block for 'timeout' milliseconds
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*/
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int ev_wait(int timeout);
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int ev_get_input(int fd, short revents, struct input_event *ev);
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void ev_dispatch(void);
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// Resources
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// Returns 0 if no error, else negative.
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int res_create_surface(const char* name, gr_surface* pSurface);
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void res_free_surface(gr_surface surface);
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#endif
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