#include <X11/Xlib.h>
#include <X11/extensions/XTest.h>
#include <X11/keysym.h>
+#include <X11/Xutil.h>
-#define NUM_PAGES 25
+#include <X11/xpm.h>
+CanonImage *page_images[MAX_PAGES];
+int npages;
+
+static Window id;
static Display *disp;
+static struct timeval tv_startup;
+static unsigned wwidth, wheight;
+
+static XpmAttributes xpma;
static KeyCode keycode(KeySym sym) {
return XKeysymToKeycode(disp,sym);
}
-static CanonImage *screenshot_now(Window id) {
+#if 0
+static void check_exitstatus(int st) {
+ eassert(WIFEXITED(st));
+ eassert(!WEXITSTATUS(st));
+}
+
+static void check_pclose(FILE *f, char *cmd) {
+ int r;
+ eassert(!ferror(f));
+ r= fgetc(f); eassert(r==EOF); eassert(feof(f));
+ r= pclose(f); eassert(r>=0); check_exitstatus(r);
+ free(cmd);
+}
+
+static CanonImage *screenshot_now(void) {
char *cmd;
CanonImage *ci;
int r;
eassert(r>=0);
FILE *f= popen(cmd,"r"); eassert(f);
ci= file_read_image(f);
- r= fgetc(f); eassert(r==EOF); eassert(feof(f));
- r= pclose(f); eassert(r>=0); eassert(WIFEXITED(r) && !WEXITSTATUS(r));
- free(cmd);
+ check_pclose(f, cmd);
return ci;
}
+#endif
+
+static void screenshot_startup(void) {
+ int r;
+ disp= XOpenDisplay(0); eassert(disp);
+ r= gettimeofday(&tv_startup,0); eassert(!r);
+}
+
+#if 0
+static CanonImage *single_page(void) {
+ int r;
+ r= XRaiseWindow(disp, id); eassert(r);
+ r= XSync(disp, False); eassert(r);
+ return screenshot_now();
+}
+#endif
+
+/*---------- pager ----------*/
+
+typedef XImage Snapshot;
+
+//static size_t snapshot_alloc= 1024;
+static double last_input;
+static const double min_update_allowance= 0.5;
+
+static double timestamp(void) {
+ struct timeval tv;
+ int r;
+
+ r= gettimeofday(&tv,0); eassert(!r);
+ double t= (tv.tv_sec - tv_startup.tv_sec) +
+ (tv.tv_usec - tv_startup.tv_usec) * 1e-6;
+ fprintf(stderr,"%f\n",t);
+ return t;
+}
+static void delay(double need_sleep) {
+ int r;
+ fprintf(stderr,"PAGING delay %f\n",need_sleep);
+ r= usleep(need_sleep * 1e6); eassert(!r);
+}
-static void read_pages(Window id) {
+static void sync_after_input(void) {
+ int r;
+ r= XSync(disp, False); eassert(r);
+ last_input= timestamp();
+}
+
+static void send_key(KeySym sym) {
+ XTestFakeKeyEvent(disp, keycode(sym),1, 10);
+ XTestFakeKeyEvent(disp, keycode(sym),0, 10);
+}
+
+static void send_pgup_many(void) {
+ int i;
+ for (i=0; i<25; i++)
+ send_key(XK_Prior);
+ fprintf(stderr,"PAGING PageUp x %d\n",i);
+ sync_after_input();
+}
+static void send_pgdown(void) {
+ send_key(XK_Next);
+ fprintf(stderr,"PAGING PageDown\n");
+ sync_after_input();
+}
+
+static void free_snapshot(Snapshot **io) {
+ if (*io) XDestroyImage(*io);
+ *io= 0;
+}
+
+static void snapshot(Snapshot **output) {
+// char *cmd;
+// int r;
+// XImage *xim;
+
+ free_snapshot(output);
+
+ fprintf(stderr,"PAGING snapshot\n");
+
+ timestamp();
+ *output= XGetImage(disp,id, 0,0, wwidth,wheight, AllPlanes, ZPixmap);
+ timestamp();
+
+ fprintf(stderr,"PAGING snapshot done.\n");
+}
+
+static int identical(const Snapshot *a, const Snapshot *b) {
+ if (!(a->width == b->width &&
+ a->height == b->height &&
+ a->bytes_per_line == b->bytes_per_line &&
+ a->format == b->format))
+ return 0;
+ return !memcmp(a->data, b->data, a->bytes_per_line * a->height);
+}
+
+static void wait_for_stability(Snapshot **output,
+ const Snapshot *previously,
+ void (*with_keypress)(void)) {
+ Snapshot *last=0;
+ /* waits longer if we're going to return an image identical to previously
+ * if previously==0, all images are considered identical to it */
+
+ fprintf(stderr,"PAGING wait_for_stability"
+ " last_input=%f previously=%p\n",
+ last_input, previously);
+
+ for (;;) {
+ double at_snapshot= timestamp();
+ double need_sleep= min_update_allowance - (at_snapshot - last_input);
+ if (need_sleep > 0) { delay(need_sleep); continue; }
+
+ snapshot(output);
+
+ if (!with_keypress &&
+ !(previously && identical(*output,previously))) {
+ fprintf(stderr,"PAGING wait_for_stability simple\n");
+ break;
+ }
+
+ if (last && identical(*output,last)) {
+ fprintf(stderr,"PAGING wait_for_stability stabilised\n");
+ break;
+ }
+
+ fprintf(stderr,"PAGING wait_for_stability retry\n");
+
+ free_snapshot(&last); last=*output; *output=0;
+
+ if (with_keypress)
+ with_keypress();
+
+ delay(0.5);
+ }
+
+ free_snapshot(&last);
+ fprintf(stderr,"PAGING wait_for_stability done.\n");
+}
+
+static void raise_and_set_focus(void) {
int r;
XWindowAttributes attr;
int xpos,ypos, evbase,errbase,majver,minver;
- unsigned width,height,bd,depth;
+ unsigned bd,depth;
Window dummy;
- disp= XOpenDisplay(0); eassert(disp);
+ fprintf(stderr,"PAGING raise_and_set_focus\n");
r= XTestQueryExtension(disp, &evbase,&errbase,&majver,&minver);
eassert(r==True);
r= XRaiseWindow(disp, id); eassert(r);
r= XGetWindowAttributes(disp, id, &attr); eassert(r);
- r= XGetGeometry(disp,id, &attr.root,&xpos,&ypos,&width,&height, &bd,&depth);
+ r= XGetGeometry(disp,id, &attr.root,
+ &xpos,&ypos, &wwidth,&wheight,
+ &bd,&depth);
eassert(r);
r= XTranslateCoordinates(disp, id,attr.root, 160,160, &xpos,&ypos,
int screen= XScreenNumberOfScreen(attr.screen);
XTestFakeMotionEvent(disp,screen, xpos, ypos, 0);
- XTestFakeButtonEvent(disp,1,1, 0);
+ XTestFakeButtonEvent(disp,1,1, 50);
XTestFakeButtonEvent(disp,1,0, 50);
- XTestFakeKeyEvent(disp, keycode(XK_Next),1, 50);
- XTestFakeKeyEvent(disp, keycode(XK_Next),0, 50);
+ sync_after_input();
+ fprintf(stderr,"PAGING raise_and_set_focus done.\n");
+}
+
+static void store_page(int pageno, Snapshot *sn) {
+ pid_t converter, paster;
+ eassert(pageno < MAX_PAGES);
+ int paste[2], results[2];
+ FILE *err;
+ int r;
+
+ eassert(!fflush(stdout));
+ eassert(!fflush(stderr));
- r= XSync(disp, False); eassert(r);
+ r= pipe(paste); eassert(!r);
+ r= pipe(results); eassert(!r);
+ err= tmpfile(); eassert(err);
+
+ converter= fork(); eassert(converter!=-1);
+ if (!converter) {
+ r= dup2(paste[0],0); eassert(r==0);
+ r= dup2(results[1],1); eassert(r==1);
+ r= dup2(2,4); eassert(r==4); /* fileno(errn) > 4, see above */
+ r= dup2(fileno(err),2); eassert(r==2);
+ close(paste[0]);
+ close(paste[1]);
+ close(results[0]);
+ close(results[1]);
+ execlp("xpmtoppm", "xpmtoppm",(char*)0);
+ dup2(4,2);
+ eassert(!"xpmtoppm exec failure");
+ }
+
+ char *xpmdata=0;
+ r= XpmCreateBufferFromImage(disp, &xpmdata, sn, 0, &xpma);
+ eassert(!r);
+ eassert(xpmdata);
+
+ paster= fork(); eassert(paster!=-1);
+ if (!paster) {
+ FILE *f= fdopen(paste[1],"w"); eassert(f);
+ close(paste[0]);
+ close(results[0]);
+ close(results[1]);
+ r= fputs(xpmdata,f); eassert(r!=EOF);
+ //size_t did= fwrite(sn->d, 1, sn->len, f);
+ //eassert(did==sn->len);
+ eassert(!fclose(f));
+ exit(0);
+ }
+
+ close(paste[0]);
+ close(paste[1]);
+ close(results[1]);
+
+ XpmFree(xpmdata);
+
+ FILE *f= fdopen(results[0],"r");
+ int c1= fgetc(f);
+ if (c1!=EOF) {
+ ungetc(c1,f);
+ page_images[pageno]= file_read_image(f);
+ r= fgetc(f); eassert(r==EOF); eassert(!ferror(f)); eassert(feof(f));
+ fclose(f);
+ }
+
+ pid_t got_conv,got_paste;
+ int st_conv, st_paste;
+
+ got_conv= waitpid(converter,&st_conv,0); eassert(got_conv==converter);
+ got_paste= waitpid(paster,&st_paste,0); eassert(got_paste==paster);
+
+ if (!st_conv &&
+ (!st_paste || (WIFSIGNALED(st_paste) && WTERMSIG(st_paste)==SIGPIPE))
+ && c1!=EOF) {
+ fclose(err);
+ return;
+ }
+ rewind(err); int c; while ((c=getc(err))!=EOF) fputc(c,stderr);
+ fprintf(stderr, "convert: subprocess statuses: %d %d\n", st_conv, st_paste);
+ _exit(127);
}
+static void read_pages(void) {
+ Snapshot *current=0, *last=0;
+
+ raise_and_set_focus();
+
+ /* page to the top - keep pressing page up until the image stops changing */
+ wait_for_stability(¤t,0, send_pgup_many);
+
+ /* now to actually page down */
+ for (;;) {
+ fprintf(stderr,"PAGING page %d\n",npages);
+ store_page(npages, current);
+ free_snapshot(&last); last=current; current=0;
+ fprintf(stderr,"PAGING page %d converted\n",npages);
+
+ wait_for_stability(¤t,last, 0);
+ if (npages && /* first pagedown doesn't do much */
+ identical(current,last)) {
+ free_snapshot(¤t);
+ break;
+ }
+
+ send_pgdown();
+ npages++;
+ }
+ fprintf(stderr,"PAGING all done.\n");
+}
+
int main(int argc, char **argv) {
- Window id;
- CanonImage *ci;
+ screenshot_startup();
id= strtoul(*++argv,0,0);
- read_pages(id);
- ci= screenshot_now(id);
+
+ read_pages();
return 0;
}
+
~yarrgweb / ypp-sc-tools.main.git / blobdiff