bc29063bf4
Events are now delivered through a callback mechanism during a call to ev_dispatch(). This will allow us to extend the events code to handle other devices/fds, not just input. One such example is the ability to process uevents. During initialization, we provide an input callback to ev_init that gets called when a new event is encountered during dispatch. ev_get has been removed and replaced with ev_get_input() helper function that can be called from inside the callback to attempt to get an input event. The existing client of ev_get in recovery has been split up such that the input thread just calls ev_wait(); ev_dispatch(); and the input_callback handles individual events by using the ev_get_input() helper. Change-Id: I24d8e71bd1533876b4ab1ae751ba200fea43c049 Signed-off-by: Dima Zavin <dima@android.com>
70 lines
2.0 KiB
C
70 lines
2.0 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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int ev_init(ev_callback input_cb, void *data);
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void ev_exit(void);
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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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