/*
*/
-#include "ocr.h"
+#include "structure.h"
#include <X11/Xlib.h>
#include <X11/extensions/XTest.h>
#include <X11/keysym.h>
+#include <X11/Xutil.h>
-#define NUM_PAGES 25
+CanonImage *page_images[MAX_PAGES];
+int npages;
+static XWindowAttributes attr;
+static Window id;
static Display *disp;
+static struct timeval tv_startup;
+static unsigned wwidth, wheight;
+static int wxpos, wypos;
static KeyCode keycode(KeySym sym) {
return XKeysymToKeycode(disp,sym);
}
-static CanonImage *screenshot_now(Window id) {
- char *cmd;
- CanonImage *ci;
+void screenshot_startup(void) {
+ int r;
+ disp= XOpenDisplay(0); eassert(disp);
+ r= gettimeofday(&tv_startup,0); eassert(!r);
+}
+
+/*---------- pager ----------*/
+
+typedef XImage Snapshot;
+
+static double last_input;
+static const double min_update_allowance= 0.25;
+
+static double timestamp(void) {
+ struct timeval tv;
int r;
- r= asprintf(&cmd, "xwd -silent -id 0x%lx | xwdtopnm", (unsigned long)id);
- 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);
- return ci;
+ 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;
- XWindowAttributes attr;
- int xpos,ypos, evbase,errbase,majver,minver;
- unsigned width,height,bd,depth;
+ 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_get_details(void) {
+ int r;
+ int evbase,errbase,majver,minver;
+ unsigned bd,depth;
Window dummy;
- disp= XOpenDisplay(0); eassert(disp);
+ fprintf(stderr,"PAGING raise_and_get_details\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,
+ &wxpos,&wypos, &wwidth,&wheight,
+ &bd,&depth);
eassert(r);
- r= XTranslateCoordinates(disp, id,attr.root, 160,160, &xpos,&ypos,
+ r= XTranslateCoordinates(disp, id,attr.root, 160,160, &wxpos,&wypos,
&dummy);
eassert(r);
+}
+static void set_focus(void) {
int screen= XScreenNumberOfScreen(attr.screen);
- XTestFakeMotionEvent(disp,screen, xpos, ypos, 0);
- XTestFakeButtonEvent(disp,1,1, 0);
+ fprintf(stderr,"PAGING set_focus\n");
+
+ XTestFakeMotionEvent(disp,screen, wxpos,wypos, 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");
+}
+
+#define SAMPLEMASK 0xfful
+
+typedef struct {
+ int lshift, rshift;
+} ShMask;
+
+static void compute_shift_mask(ShMask *sm, unsigned long ximage_mask) {
+ sm->lshift= 0;
+ sm->rshift= 0;
- r= XSync(disp, False); eassert(r);
+ for (;;) {
+ if (ximage_mask <= (SAMPLEMASK>>1)) {
+ sm->lshift++; ximage_mask <<= 1;
+ } else if (ximage_mask > SAMPLEMASK) {
+ sm->rshift++; ximage_mask >>= 1;
+ } else {
+ break;
+ }
+ assert(!(sm->lshift && sm->rshift));
+ }
+ assert(sm->lshift < LONG_BIT);
+ assert(sm->rshift < LONG_BIT);
}
-int main(int argc, char **argv) {
- Window id;
- CanonImage *ci;
+static CanonImage *convert_page(Snapshot *sn) {
+ ShMask shiftmasks[3];
+ CanonImage *im;
+
+ fprintf(screenshots_file,
+ "P6\n"
+ "%d %d\n"
+ "255\n", sn->width, sn->height);
+
+#define COMPUTE_SHIFT_MASK(ix, rgb) \
+ compute_shift_mask(&shiftmasks[ix], sn->rgb##_mask)
+ COMPUTE_SHIFT_MASK(0, red);
+ COMPUTE_SHIFT_MASK(1, green);
+ COMPUTE_SHIFT_MASK(2, blue);
+
+ CANONICALISE_IMAGE(im, sn->width, sn->height, {
+ long xrgb= XGetPixel(sn, x, y);
+ int i;
+ rgb= 0;
+ for (i=0; i<3; i++, rgb <<= 8) {
+ unsigned long sample=
+ ((xrgb << shiftmasks[i].lshift)
+ >> shiftmasks[i].rshift) & SAMPLEMASK;
+ rgb |= sample;
+ fputc(sample, screenshots_file);
+ }
+ });
+
+ eassert(!fflush(screenshots_file));
+
+ return im;
+}
+
+void take_screenshots(void) {
+ Snapshot *current=0, *last=0;
+ CanonImage *test;
+
+ /* find the window and check it's on the right kind of screen */
+ raise_and_get_details();
+ wait_for_stability(¤t,0,0);
+ test= convert_page(current);
+ find_structure(test);
+ free(test);
+
+ /* page to the top - keep pressing page up until the image stops changing */
+ set_focus();
+ wait_for_stability(¤t,0, send_pgup_many);
+
+ /* now to actually page down */
+ for (;;) {
+ fprintf(stderr,"paging page %d\n",npages);
+
+ eassert(npages < MAX_PAGES);
+ page_images[npages]= convert_page(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");
+}
+
+void take_one_screenshot(void) {
+ Snapshot *current=0;
+
+ raise_and_get_details();
+ sync_after_input();
+ wait_for_stability(¤t,0,0);
+ page_images[0]= convert_page(current);
+ npages= 1;
+}
+
+void set_yppclient_window(unsigned long wul) {
+ id= wul;
+}
- id= strtoul(*++argv,0,0);
- read_pages(id);
- ci= screenshot_now(id);
- return 0;
+void find_yppclient_window(void) {
+ if (id) return;
+ eassert(!"finding client window NYI");
}
~yarrgweb / ypp-sc-tools.main.git / blobdiff