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Improve bisect setup

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Signed-off-by: Sebastian Ramacher <sebastian+dev@ramacher.at>
This commit is contained in:
Abdó Roig-Maranges 2013-07-07 00:12:45 +02:00 committed by Sebastian Ramacher
parent 65da0ffa50
commit 7f42ccbdad
1 changed files with 28 additions and 62 deletions
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90
shortcuts.c
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@ -818,68 +818,38 @@ sc_bisect(girara_session_t* session, girara_argument_t* argument,
} else if (argument != NULL) {
direction = argument->n;
/* setup initial bisect range */
zathura_jump_t* jump = zathura_jumplist_current(zathura);
if (jump == NULL) {
girara_debug("bisecting between first and last page because there are no jumps");
zathura->bisect.start = 0;
zathura->bisect.end = num_pages - 1;
} else {
if (jump->page != cur_page || jump->page != zathura->bisect.last_jump) {
girara_debug("last jump doesn't match up, starting new bisecting");
zathura->bisect.start = 0;
zathura->bisect.end = num_pages - 1;
/* check if we have previous jumps */
if (zathura_jumplist_has_previous(zathura) == true) {
zathura_jumplist_backward(zathura);
jump = zathura_jumplist_current(zathura);
} if (jump->page != cur_page || jump->page != zathura->bisect.last_jump) {
girara_debug("last jump doesn't match up, starting new bisecting");
zathura->bisect.start = 0;
zathura->bisect.end = num_pages - 1;
unsigned int prev_page = 0;
unsigned int prev_page2 = num_pages - 1;
if (jump != NULL) {
prev_page = jump->page;
}
prev_page2 = prev_page;
if (zathura_jumplist_has_previous(zathura) == true) {
zathura_jumplist_backward(zathura);
jump = zathura_jumplist_current(zathura);
if (jump != NULL) {
prev_page2 = jump->page;
}
zathura_jumplist_forward(zathura);
}
zathura_jumplist_forward(zathura);
if (prev_page == prev_page2) {
if (prev_page > cur_page) {
zathura->bisect.end = prev_page;
} else {
zathura->bisect.start = prev_page;
}
} else {
zathura->bisect.start = MIN(prev_page, prev_page2);
zathura->bisect.end = MAX(prev_page, prev_page2);
}
}
/* some sanity checks on new bounds */
if (cur_page < zathura->bisect.start) {
if (direction == FORWARD) {
zathura->bisect.start = cur_page;
} else {
zathura->bisect.start = cur_page;
zathura->bisect.end = 0;
}
} else if (cur_page > zathura->bisect.end) {
if (direction == BACKWARD) {
zathura->bisect.end = cur_page;
} else {
zathura->bisect.start = cur_page;
zathura->bisect.end = num_pages - 1;
}
}
unsigned int prev_page;
if (direction == FORWARD) {
prev_page = num_pages - 1;
} else {
prev_page = 0;
}
/* check if we have previous jumps */
if (zathura_jumplist_has_previous(zathura) == true) {
zathura_jumplist_backward(zathura);
jump = zathura_jumplist_current(zathura);
if (jump != NULL) {
prev_page = jump->page;
}
zathura_jumplist_forward(zathura);
}
zathura->bisect.start = MIN(prev_page, cur_page);
zathura->bisect.end = MAX(prev_page, cur_page);
zathura->bisect.last_jump = cur_page;
}
} else {
return false;
@ -891,14 +861,13 @@ sc_bisect(girara_session_t* session, girara_argument_t* argument,
return false;
}
/* now, we are back at the initial jump. prev_page and prev2_page contain
the pages for previous and second previous jump if they exist. */
unsigned int next_page = cur_page;
unsigned int next_start = zathura->bisect.start;
unsigned int next_end = zathura->bisect.end;
/* bisect */
/* here we have next_start <= next_page <= next_end */
/* bisect step */
switch(direction) {
case FORWARD:
if (cur_page != zathura->bisect.end) {
@ -931,13 +900,10 @@ sc_bisect(girara_session_t* session, girara_argument_t* argument,
zathura->bisect.start = next_start;
zathura->bisect.end = next_end;
zathura_jumplist_add(zathura);
page_set(zathura, next_page);
zathura_jumplist_add(zathura);
/* adjust horizontal position */
GtkAdjustment* hadjustment = gtk_scrolled_window_get_hadjustment(GTK_SCROLLED_WINDOW(session->gtk.view));
cb_view_hadjustment_changed(hadjustment, zathura);
return false;
}