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keep position while zooming

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Sebastian Ramacher 2012-02-08 21:39:44 +01:00
parent fea48f3438
commit a51183cd66
1 changed files with 9 additions and 1 deletions
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10
shortcuts.c
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@ -740,6 +740,7 @@ sc_zoom(girara_session_t* session, girara_argument_t* argument, girara_event_t*
girara_setting_get(zathura->ui.session, "zoom-step", &value);
float zoom_step = value / 100.0f;
float oldzoom = zathura->document->scale;
/* specify new zoom value */
if (argument->n == ZOOM_IN) {
@ -747,7 +748,6 @@ sc_zoom(girara_session_t* session, girara_argument_t* argument, girara_event_t*
} else if (argument->n == ZOOM_OUT) {
zathura->document->scale -= zoom_step;
} else if (argument->n == ZOOM_SPECIFIC) {
fprintf(stderr, "t: %d\n", t);
zathura->document->scale = t / 100.0f;
} else {
zathura->document->scale = 1.0;
@ -760,6 +760,14 @@ sc_zoom(girara_session_t* session, girara_argument_t* argument, girara_event_t*
zathura->document->scale = 10.0f;
}
/* keep position */
GtkAdjustment* view_vadjustment = gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(zathura->ui.session->gtk.view));
GtkAdjustment* view_hadjustment = gtk_scrolled_window_get_hadjustment(GTK_SCROLLED_WINDOW(zathura->ui.session->gtk.view));
gdouble valx = gtk_adjustment_get_value(view_hadjustment) / oldzoom * zathura->document->scale;
gdouble valy = gtk_adjustment_get_value(view_vadjustment) / oldzoom * zathura->document->scale;
set_adjustment(view_hadjustment, valx);
set_adjustment(view_vadjustment, valy);
render_all(zathura);
return false;