Manual event handling in main.c

This commit is contained in:
Bert 2011-02-03 10:55:23 +01:00
parent e8cf8da208
commit 12a94cc40e

297
main.c
View file

@ -32,17 +32,10 @@
#include "util.h"
#include "window.h"
void on_keypress(XEvent*);
void on_buttonpress(XEvent*);
void on_buttonrelease(XEvent*);
void on_motionnotify(XEvent*);
void on_configurenotify(XEvent*);
void update_title();
void check_append(const char*);
void read_dir_rec(const char*);
static void (*handler[LASTEvent])(XEvent*);
void run();
img_t img;
win_t win;
@ -52,11 +45,6 @@ win_t win;
const char **filenames;
int filecnt, fileidx;
unsigned char timeout;
int mox;
int moy;
#define TITLE_LEN 256
char win_title[TITLE_LEN];
@ -69,39 +57,6 @@ void cleanup() {
}
}
void run() {
int xfd;
fd_set fds;
struct timeval t;
XEvent ev;
handler[KeyPress] = on_keypress;
handler[ButtonPress] = on_buttonpress;
handler[ButtonRelease] = on_buttonrelease;
handler[MotionNotify] = on_motionnotify;
handler[ConfigureNotify] = on_configurenotify;
timeout = 0;
while (1) {
if (timeout) {
t.tv_sec = 0;
t.tv_usec = 250;
xfd = ConnectionNumber(win.env.dpy);
FD_ZERO(&fds);
FD_SET(xfd, &fds);
if (!XPending(win.env.dpy) && !select(xfd + 1, &fds, 0, 0, &t)) {
img_render(&img, &win);
timeout = 0;
}
}
if (!XNextEvent(win.env.dpy, &ev) && handler[ev.type])
handler[ev.type](&ev);
}
}
int main(int argc, char **argv) {
int i;
const char *filename;
@ -158,15 +113,102 @@ int main(int argc, char **argv) {
return 0;
}
void on_keypress(XEvent *ev) {
void update_title() {
int n;
n = snprintf(win_title, TITLE_LEN, "sxiv: [%d/%d] <%d%%> %s", fileidx + 1,
filecnt, (int) (img.zoom * 100.0), filenames[fileidx]);
if (n >= TITLE_LEN) {
win_title[TITLE_LEN - 2] = '.';
win_title[TITLE_LEN - 3] = '.';
win_title[TITLE_LEN - 4] = '.';
}
win_set_title(&win, win_title);
}
void check_append(const char *filename) {
if (!filename)
return;
if (img_check(filename)) {
if (fileidx == filecnt) {
filecnt *= 2;
filenames = (const char**) s_realloc(filenames,
filecnt * sizeof(const char*));
}
filenames[fileidx++] = filename;
}
}
void read_dir_rec(const char *dirname) {
char *filename;
const char **dirnames;
int dircnt, diridx;
unsigned char first;
size_t len;
DIR *dir;
struct dirent *dentry;
struct stat fstats;
if (!dirname)
return;
dircnt = DNAME_CNT;
diridx = first = 1;
dirnames = (const char**) s_malloc(dircnt * sizeof(const char*));
dirnames[0] = dirname;
while (diridx > 0) {
dirname = dirnames[--diridx];
if (!(dir = opendir(dirname)))
die("could not open directory: %s", dirname);
while ((dentry = readdir(dir))) {
if (!strcmp(dentry->d_name, ".") || !strcmp(dentry->d_name, ".."))
continue;
len = strlen(dirname) + strlen(dentry->d_name) + 2;
filename = (char*) s_malloc(len * sizeof(char));
snprintf(filename, len, "%s/%s", dirname, dentry->d_name);
if (stat(filename, &fstats)) {
warn("could not stat file: %s", filename);
free(filename);
} else if (S_ISDIR(fstats.st_mode)) {
if (diridx == dircnt) {
dircnt *= 2;
dirnames = (const char**) s_realloc(dirnames,
dircnt * sizeof(const char*));
}
dirnames[diridx++] = filename;
} else {
check_append(filename);
}
}
closedir(dir);
if (!first)
free((void*) dirname);
else
first = 0;
}
free(dirnames);
}
/* event handling */
unsigned char timeout;
int mox, moy;
void on_keypress(XKeyEvent *kev) {
char key;
KeySym ksym;
int changed;
if (!ev)
if (!kev)
return;
XLookupString(&ev->xkey, &key, 1, &ksym, NULL);
XLookupString(kev, &key, 1, &ksym, NULL);
changed = 0;
switch (ksym) {
@ -271,17 +313,17 @@ void on_keypress(XEvent *ev) {
}
}
void on_buttonpress(XEvent *ev) {
void on_buttonpress(XButtonEvent *bev) {
int changed;
unsigned int mask;
if (!ev)
if (!bev)
return;
mask = CLEANMASK(ev->xbutton.state);
mask = CLEANMASK(bev->state);
changed = 0;
switch (ev->xbutton.button) {
switch (bev->button) {
case Button1:
if (fileidx + 1 < filecnt) {
img_load(&img, filenames[++fileidx]);
@ -289,8 +331,8 @@ void on_buttonpress(XEvent *ev) {
}
break;
case Button2:
mox = ev->xbutton.x;
moy = ev->xbutton.y;
mox = bev->x;
moy = bev->y;
win_set_cursor(&win, CURSOR_HAND);
break;
case Button3:
@ -330,118 +372,63 @@ void on_buttonpress(XEvent *ev) {
}
}
void on_buttonrelease(XEvent *ev) {
if (!ev)
void on_motionnotify(XMotionEvent *mev) {
if (!mev)
return;
if (ev->xbutton.button == Button2)
win_set_cursor(&win, CURSOR_ARROW);
}
void on_motionnotify(XEvent *ev) {
XMotionEvent *m;
if (!ev)
return;
m = &ev->xmotion;
if (m->x >= 0 && m->x <= win.w && m->y >= 0 && m->y <= win.h) {
if (img_move(&img, &win, m->x - mox, m->y - moy))
if (mev->x >= 0 && mev->x <= win.w && mev->y >= 0 && mev->y <= win.h) {
if (img_move(&img, &win, mev->x - mox, mev->y - moy))
timeout = 1;
mox = m->x;
moy = m->y;
mox = mev->x;
moy = mev->y;
}
}
void on_configurenotify(XEvent *ev) {
if (!ev)
return;
void run() {
int xfd;
fd_set fds;
struct timeval t;
XEvent ev;
if (win_configure(&win, &ev->xconfigure)) {
timeout = 0;
while (1) {
if (timeout) {
t.tv_sec = 0;
t.tv_usec = 250;
xfd = ConnectionNumber(win.env.dpy);
FD_ZERO(&fds);
FD_SET(xfd, &fds);
if (!XPending(win.env.dpy) && !select(xfd + 1, &fds, 0, 0, &t)) {
img_render(&img, &win);
timeout = 0;
}
}
if (!XNextEvent(win.env.dpy, &ev)) {
switch (ev.type) {
case KeyPress:
on_keypress(&ev.xkey);
break;
case ButtonPress:
on_buttonpress(&ev.xbutton);
break;
case ButtonRelease:
if (ev.xbutton.button == Button2)
win_set_cursor(&win, CURSOR_ARROW);
break;
case MotionNotify:
on_motionnotify(&ev.xmotion);
break;
case ConfigureNotify:
if (win_configure(&win, &ev.xconfigure)) {
img.checkpan = 1;
timeout = 1;
}
}
void update_title() {
int n;
n = snprintf(win_title, TITLE_LEN, "sxiv: [%d/%d] <%d%%> %s", fileidx + 1,
filecnt, (int) (img.zoom * 100.0), filenames[fileidx]);
if (n >= TITLE_LEN) {
win_title[TITLE_LEN - 2] = '.';
win_title[TITLE_LEN - 3] = '.';
win_title[TITLE_LEN - 4] = '.';
break;
}
win_set_title(&win, win_title);
}
void check_append(const char *filename) {
if (!filename)
return;
if (img_check(filename)) {
if (fileidx == filecnt) {
filecnt *= 2;
filenames = (const char**) s_realloc(filenames,
filecnt * sizeof(const char*));
}
filenames[fileidx++] = filename;
}
}
void read_dir_rec(const char *dirname) {
char *filename;
const char **dirnames;
int dircnt, diridx;
unsigned char first;
size_t len;
DIR *dir;
struct dirent *dentry;
struct stat fstats;
if (!dirname)
return;
dircnt = DNAME_CNT;
diridx = first = 1;
dirnames = (const char**) s_malloc(dircnt * sizeof(const char*));
dirnames[0] = dirname;
while (diridx > 0) {
dirname = dirnames[--diridx];
if (!(dir = opendir(dirname)))
die("could not open directory: %s", dirname);
while ((dentry = readdir(dir))) {
if (!strcmp(dentry->d_name, ".") || !strcmp(dentry->d_name, ".."))
continue;
len = strlen(dirname) + strlen(dentry->d_name) + 2;
filename = (char*) s_malloc(len * sizeof(char));
snprintf(filename, len, "%s/%s", dirname, dentry->d_name);
if (stat(filename, &fstats)) {
warn("could not stat file: %s", filename);
free(filename);
} else if (S_ISDIR(fstats.st_mode)) {
if (diridx == dircnt) {
dircnt *= 2;
dirnames = (const char**) s_realloc(dirnames,
dircnt * sizeof(const char*));
}
dirnames[diridx++] = filename;
} else {
check_append(filename);
}
}
closedir(dir);
if (!first)
free((void*) dirname);
else
first = 0;
}
free(dirnames);
}