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-rw-r--r--minui/Android.mk9
-rw-r--r--minui/events.cpp (renamed from minui/events.c)176
-rw-r--r--minui/minui.h35
3 files changed, 126 insertions, 94 deletions
diff --git a/minui/Android.mk b/minui/Android.mk
index 53d072f..66dea74 100644
--- a/minui/Android.mk
+++ b/minui/Android.mk
@@ -1,14 +1,19 @@
LOCAL_PATH := $(call my-dir)
include $(CLEAR_VARS)
-LOCAL_SRC_FILES := graphics.c graphics_adf.c graphics_fbdev.c events.c resources.c
+LOCAL_SRC_FILES := \
+ events.cpp \
+ graphics.c \
+ graphics_adf.c \
+ graphics_fbdev.c \
+ resources.c \
LOCAL_WHOLE_STATIC_LIBRARIES += libadf
LOCAL_STATIC_LIBRARIES += libpng
LOCAL_MODULE := libminui
-LOCAL_CFLAGS := -std=gnu11
+LOCAL_CLANG := true
# This used to compare against values in double-quotes (which are just
# ordinary characters in this context). Strip double-quotes from the
diff --git a/minui/events.c b/minui/events.cpp
index 9e4255d..2c41eb8 100644
--- a/minui/events.c
+++ b/minui/events.cpp
@@ -14,13 +14,13 @@
* limitations under the License.
*/
+#include <dirent.h>
+#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <dirent.h>
#include <sys/epoll.h>
+#include <unistd.h>
#include <linux/input.h>
@@ -32,16 +32,13 @@
#define BITS_PER_LONG (sizeof(unsigned long) * 8)
#define BITS_TO_LONGS(x) (((x) + BITS_PER_LONG - 1) / BITS_PER_LONG)
-#define test_bit(bit, array) \
- ((array)[(bit)/BITS_PER_LONG] & (1 << ((bit) % BITS_PER_LONG)))
-
struct fd_info {
int fd;
ev_callback cb;
- void *data;
+ void* data;
};
-static int epollfd;
+static int g_epoll_fd;
static struct epoll_event polledevents[MAX_DEVICES + MAX_MISC_FDS];
static int npolledevents;
@@ -51,44 +48,45 @@ static unsigned ev_count = 0;
static unsigned ev_dev_count = 0;
static unsigned ev_misc_count = 0;
-int ev_init(ev_callback input_cb, void *data)
-{
- DIR *dir;
- struct dirent *de;
- int fd;
- struct epoll_event ev;
+static bool test_bit(size_t bit, unsigned long* array) {
+ return (array[bit/BITS_PER_LONG] & (1UL << (bit % BITS_PER_LONG))) != 0;
+}
+
+int ev_init(ev_callback input_cb, void* data) {
bool epollctlfail = false;
- epollfd = epoll_create(MAX_DEVICES + MAX_MISC_FDS);
- if (epollfd == -1)
+ g_epoll_fd = epoll_create(MAX_DEVICES + MAX_MISC_FDS);
+ if (g_epoll_fd == -1) {
return -1;
+ }
- dir = opendir("/dev/input");
- if(dir != 0) {
- while((de = readdir(dir))) {
+ DIR* dir = opendir("/dev/input");
+ if (dir != NULL) {
+ struct dirent* de;
+ while ((de = readdir(dir))) {
unsigned long ev_bits[BITS_TO_LONGS(EV_MAX)];
// fprintf(stderr,"/dev/input/%s\n", de->d_name);
- if(strncmp(de->d_name,"event",5)) continue;
- fd = openat(dirfd(dir), de->d_name, O_RDONLY);
- if(fd < 0) continue;
+ if (strncmp(de->d_name, "event", 5)) continue;
+ int fd = openat(dirfd(dir), de->d_name, O_RDONLY);
+ if (fd == -1) continue;
- /* read the evbits of the input device */
- if (ioctl(fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits) < 0) {
+ // Read the evbits of the input device.
+ if (ioctl(fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits) == -1) {
close(fd);
continue;
}
- /* TODO: add ability to specify event masks. For now, just assume
- * that only EV_KEY, EV_REL & EV_SW event types are ever needed. */
+ // We assume that only EV_KEY, EV_REL, and EV_SW event types are ever needed.
if (!test_bit(EV_KEY, ev_bits) && !test_bit(EV_REL, ev_bits) && !test_bit(EV_SW, ev_bits)) {
close(fd);
continue;
}
+ struct epoll_event ev;
ev.events = EPOLLIN | EPOLLWAKEUP;
- ev.data.ptr = (void *)&ev_fdinfo[ev_count];
- if (epoll_ctl(epollfd, EPOLL_CTL_ADD, fd, &ev)) {
+ ev.data.ptr = &ev_fdinfo[ev_count];
+ if (epoll_ctl(g_epoll_fd, EPOLL_CTL_ADD, fd, &ev) == -1) {
close(fd);
epollctlfail = true;
continue;
@@ -99,30 +97,34 @@ int ev_init(ev_callback input_cb, void *data)
ev_fdinfo[ev_count].data = data;
ev_count++;
ev_dev_count++;
- if(ev_dev_count == MAX_DEVICES) break;
+ if (ev_dev_count == MAX_DEVICES) break;
}
+
+ closedir(dir);
}
if (epollctlfail && !ev_count) {
- close(epollfd);
- epollfd = -1;
+ close(g_epoll_fd);
+ g_epoll_fd = -1;
return -1;
}
return 0;
}
-int ev_add_fd(int fd, ev_callback cb, void *data)
-{
- struct epoll_event ev;
- int ret;
+int ev_get_epollfd(void) {
+ return g_epoll_fd;
+}
- if (ev_misc_count == MAX_MISC_FDS || cb == NULL)
+int ev_add_fd(int fd, ev_callback cb, void* data) {
+ if (ev_misc_count == MAX_MISC_FDS || cb == NULL) {
return -1;
+ }
+ struct epoll_event ev;
ev.events = EPOLLIN | EPOLLWAKEUP;
ev.data.ptr = (void *)&ev_fdinfo[ev_count];
- ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, fd, &ev);
+ int ret = epoll_ctl(g_epoll_fd, EPOLL_CTL_ADD, fd, &ev);
if (!ret) {
ev_fdinfo[ev_count].fd = fd;
ev_fdinfo[ev_count].cb = cb;
@@ -134,80 +136,96 @@ int ev_add_fd(int fd, ev_callback cb, void *data)
return ret;
}
-int ev_get_epollfd(void)
-{
- return epollfd;
-}
-
-void ev_exit(void)
-{
+void ev_exit(void) {
while (ev_count > 0) {
close(ev_fdinfo[--ev_count].fd);
}
ev_misc_count = 0;
ev_dev_count = 0;
- close(epollfd);
+ close(g_epoll_fd);
}
-int ev_wait(int timeout)
-{
- npolledevents = epoll_wait(epollfd, polledevents, ev_count, timeout);
- if (npolledevents <= 0)
+int ev_wait(int timeout) {
+ npolledevents = epoll_wait(g_epoll_fd, polledevents, ev_count, timeout);
+ if (npolledevents <= 0) {
return -1;
+ }
return 0;
}
-void ev_dispatch(void)
-{
- int n;
- int ret;
-
- for (n = 0; n < npolledevents; n++) {
- struct fd_info *fdi = polledevents[n].data.ptr;
+void ev_dispatch(void) {
+ for (int n = 0; n < npolledevents; n++) {
+ fd_info* fdi = reinterpret_cast<fd_info*>(polledevents[n].data.ptr);
ev_callback cb = fdi->cb;
- if (cb)
+ if (cb) {
cb(fdi->fd, polledevents[n].events, fdi->data);
+ }
}
}
-int ev_get_input(int fd, uint32_t epevents, struct input_event *ev)
-{
- int r;
-
+int ev_get_input(int fd, uint32_t epevents, struct input_event* ev) {
if (epevents & EPOLLIN) {
- r = read(fd, ev, sizeof(*ev));
- if (r == sizeof(*ev))
+ ssize_t r = read(fd, ev, sizeof(*ev));
+ if (r == sizeof(*ev)) {
return 0;
+ }
}
return -1;
}
-int ev_sync_key_state(ev_set_key_callback set_key_cb, void *data)
-{
- unsigned long key_bits[BITS_TO_LONGS(KEY_MAX)];
+int ev_sync_key_state(ev_set_key_callback set_key_cb, void* data) {
unsigned long ev_bits[BITS_TO_LONGS(EV_MAX)];
- unsigned i;
- int ret;
-
- for (i = 0; i < ev_dev_count; i++) {
- int code;
+ unsigned long key_bits[BITS_TO_LONGS(KEY_MAX)];
- memset(key_bits, 0, sizeof(key_bits));
+ for (size_t i = 0; i < ev_dev_count; ++i) {
memset(ev_bits, 0, sizeof(ev_bits));
+ memset(key_bits, 0, sizeof(key_bits));
- ret = ioctl(ev_fdinfo[i].fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits);
- if (ret < 0 || !test_bit(EV_KEY, ev_bits))
+ if (ioctl(ev_fdinfo[i].fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits) == -1) {
continue;
-
- ret = ioctl(ev_fdinfo[i].fd, EVIOCGKEY(sizeof(key_bits)), key_bits);
- if (ret < 0)
+ }
+ if (!test_bit(EV_KEY, ev_bits)) {
continue;
+ }
+ if (ioctl(ev_fdinfo[i].fd, EVIOCGKEY(sizeof(key_bits)), key_bits) == -1) {
+ continue;
+ }
- for (code = 0; code <= KEY_MAX; code++) {
- if (test_bit(code, key_bits))
+ for (int code = 0; code <= KEY_MAX; code++) {
+ if (test_bit(code, key_bits)) {
set_key_cb(code, 1, data);
+ }
}
}
return 0;
}
+
+void ev_iterate_available_keys(ev_key_callback cb, void* data) {
+ unsigned long ev_bits[BITS_TO_LONGS(EV_MAX)];
+ unsigned long key_bits[BITS_TO_LONGS(KEY_MAX)];
+
+ for (size_t i = 0; i < ev_dev_count; ++i) {
+ memset(ev_bits, 0, sizeof(ev_bits));
+ memset(key_bits, 0, sizeof(key_bits));
+
+ // Does this device even have keys?
+ if (ioctl(ev_fdinfo[i].fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits) == -1) {
+ continue;
+ }
+ if (!test_bit(EV_KEY, ev_bits)) {
+ continue;
+ }
+
+ int rc = ioctl(ev_fdinfo[i].fd, EVIOCGBIT(EV_KEY, KEY_MAX), key_bits);
+ if (rc == -1) {
+ continue;
+ }
+
+ for (int key_code = 0; key_code <= KEY_MAX; ++key_code) {
+ if (test_bit(key_code, key_bits)) {
+ cb(key_code, data);
+ }
+ }
+ }
+}
diff --git a/minui/minui.h b/minui/minui.h
index 733b675..8f2ff11 100644
--- a/minui/minui.h
+++ b/minui/minui.h
@@ -25,6 +25,10 @@
extern "C" {
#endif
+//
+// Graphics.
+//
+
typedef struct {
int width;
int height;
@@ -56,30 +60,35 @@ void gr_blit(gr_surface source, int sx, int sy, int w, int h, int dx, int dy);
unsigned int gr_get_width(gr_surface surface);
unsigned int gr_get_height(gr_surface surface);
-// input event structure, include <linux/input.h> for the definition.
-// see http://www.mjmwired.net/kernel/Documentation/input/ for info.
+//
+// Input events.
+//
+
struct input_event;
-typedef int (*ev_callback)(int fd, uint32_t epevents, void *data);
-typedef int (*ev_set_key_callback)(int code, int value, void *data);
+typedef int (*ev_callback)(int fd, uint32_t epevents, void* data);
+typedef int (*ev_set_key_callback)(int code, int value, void* data);
+typedef void (*ev_key_callback)(int code, void* data);
-int ev_init(ev_callback input_cb, void *data);
+int ev_init(ev_callback input_cb, void* data);
void ev_exit(void);
-int ev_add_fd(int fd, ev_callback cb, void *data);
-int ev_sync_key_state(ev_set_key_callback set_key_cb, void *data);
-
-/* timeout has the same semantics as for poll
- * 0 : don't block
- * < 0 : block forever
- * > 0 : block for 'timeout' milliseconds
- */
+int ev_add_fd(int fd, ev_callback cb, void* data);
+int ev_sync_key_state(ev_set_key_callback set_key_cb, void* data);
+void ev_iterate_available_keys(ev_key_callback cb, void* data);
+
+// 'timeout' has the same semantics as poll(2).
+// 0 : don't block
+// < 0 : block forever
+// > 0 : block for 'timeout' milliseconds
int ev_wait(int timeout);
int ev_get_input(int fd, uint32_t epevents, struct input_event *ev);
void ev_dispatch(void);
int ev_get_epollfd(void);
+//
// Resources
+//
// res_create_*_surface() functions return 0 if no error, else
// negative.
generated by cgit v1.1 at 2024-12-22 13:52:26 +0000