We added three options

1) zoom-center :: bool
   zoom-center = false

   If zoom-center = false nothing changes.
   If zoom-center = true zooming respects the horizontal center of the
   pageview. That is, the vertical line dividing the displayed part of
   the document doesn't move within the document.

   Reasoning: When viewing a pdf with a margin we usually want to hide the
   margin at both sides by zooming in.

2) scroll-hstep :: float
   scroll-hstep = -1

   If scroll-hstep < 0 nothing changes.
   If scroll-hstep >= 0 then scroll-hstep defines the scroll step in the
   horizontal direction.

   Reasoning: This allows us to make finer adjustments in the horizontal
   direction without the mouse and without loosing the ablility to
   navigate quickly through the document.

3) search-hadjust :: bool
   search-hadjust = true

   If search-hadjust = true nothing changes.
   If search-hadjust = false searching does not adjust the horizontal
   center of the document when showing search results.

   Reasoning: When viewing a pdf with a margin we usually want to hide
   the margin at both sides by zooming in. The horizontal adjustment
   sometimes hides parts of the document by moving the horizontal
   center.

config.c

@@ -106,6 +106,8 @@ config_load_default(zathura_t* zathura)
   girara_setting_add(gsession, "pages-per-row",         &int_value,   INT,    false, _("Number of pages per row"), cb_pages_per_row_value_changed, NULL);
   float_value = 40;
   girara_setting_add(gsession, "scroll-step",           &float_value, FLOAT,  false, _("Scroll step"),             NULL, NULL);
+  float_value = -1;
+  girara_setting_add(gsession, "scroll-hstep",          &float_value, FLOAT,  false, _("Horizontal scroll step"),             NULL, NULL);
   int_value = 10;
   girara_setting_add(gsession, "zoom-min",              &int_value,   INT,    false, _("Zoom minimum"), NULL, NULL);
   int_value = 1000;
@@ -129,6 +131,10 @@ config_load_default(zathura_t* zathura)
   girara_setting_add(gsession, "scroll-wrap",            &bool_value,  BOOLEAN, false, _("Wrap scrolling"), NULL, NULL);
   bool_value = false;
   girara_setting_add(gsession, "advance-pages-per-row",  &bool_value,  BOOLEAN, false, _("Advance number of pages per row"), NULL, NULL);
+  bool_value = false;
+  girara_setting_add(gsession, "zoom-center",            &bool_value,  BOOLEAN, false, _("Horizontally centered zoom"), NULL, NULL);
+  bool_value = true;
+  girara_setting_add(gsession, "search-hadjust",         &bool_value,  BOOLEAN, false, _("Center result horizontally"), NULL, NULL);
   float_value = 0.5;
   girara_setting_add(gsession, "highlight-transparency", &float_value, FLOAT,   false, _("Transparency for highlighting"), NULL, NULL);
   bool_value = true;

shortcuts.c

@@ -548,6 +548,11 @@ sc_scroll(girara_session_t* session, girara_argument_t* argument,
 
   float scroll_step = 40;
   girara_setting_get(session, "scroll-step", &scroll_step);
+  float scroll_hstep = -1;
+  girara_setting_get(session, "scroll-hstep", &scroll_hstep);
+  if (scroll_hstep < 0) {
+    scroll_hstep = scroll_step;
+  }
   int padding = 1;
   girara_setting_get(session, "page-padding", &padding);
 
@@ -571,10 +576,14 @@ sc_scroll(girara_session_t* session, girara_argument_t* argument,
       new_value = value + ((view_size + padding) / 2);
       break;
     case LEFT:
+      new_value = value - scroll_hstep;
+      break;
     case UP:
       new_value = value - scroll_step;
       break;
     case RIGHT:
+      new_value = value + scroll_hstep;
+      break;
     case DOWN:
       new_value = value + scroll_step;
       break;
@@ -666,12 +675,16 @@ sc_search(girara_session_t* session, girara_argument_t* argument,
     page_calculate_offset(zathura, target_page, &offset);
 
     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));
-
-    int x = offset.x - gtk_adjustment_get_page_size(view_hadjustment) / 2 + rectangle.x1;
     int y = offset.y - gtk_adjustment_get_page_size(view_vadjustment) / 2 + rectangle.y1;
-    set_adjustment(view_hadjustment, x);
     set_adjustment(view_vadjustment, y);
+
+    bool search_hadjust = true;
+    girara_setting_get(session, "search-hadjust", &search_hadjust);
+    if (search_hadjust == true) {
+      GtkAdjustment* view_hadjustment = gtk_scrolled_window_get_hadjustment(GTK_SCROLLED_WINDOW(zathura->ui.session->gtk.view));
+      int x = offset.x - gtk_adjustment_get_page_size(view_hadjustment) / 2 + rectangle.x1;
+      set_adjustment(view_hadjustment, x);
+    }
   }
 
   return false;

utils.c

@@ -11,6 +11,7 @@
 #include <gtk/gtk.h>
 #include <girara/session.h>
 #include <girara/utils.h>
+#include <girara/settings.h>
 #include <glib/gi18n.h>
 
 #include "links.h"
@@ -312,7 +313,8 @@ zathura_page_get_widget(zathura_t* zathura, zathura_page_t* page)
 }
 
 void
-readjust_view_after_zooming(zathura_t *zathura, float old_zoom, bool delay) {
+readjust_view_after_zooming(zathura_t *zathura, float old_zoom, bool delay)
+{
   if (zathura == NULL || zathura->document == NULL) {
     return;
   }
@@ -325,6 +327,12 @@ readjust_view_after_zooming(zathura_t *zathura, float old_zoom, bool delay) {
   gdouble valx = gtk_adjustment_get_value(hadjustment) / old_zoom * scale;
   gdouble valy = gtk_adjustment_get_value(vadjustment) / old_zoom * scale;
 
+  bool zoom_center = false;
+  girara_setting_get(zathura->ui.session, "zoom-center", &zoom_center);
+  if (zoom_center) {
+    valx += gtk_adjustment_get_page_size(hadjustment) * (scale / old_zoom - 1) / 2;
+  }
+
   if (delay == true) {
     position_set_delayed(zathura, valx, valy);
   } else {

zathurarc.5.rst

@@ -570,6 +570,13 @@ Defines if the "Loading..." text should be displayed if a page is rendered.
 * Value type: Boolean
 * Default value: true
 
+scroll-hstep
+^^^^^^^^^^^^
+Defines the horizontal step size of scrolling by calling the scroll command once
+
+* Value-type: Float
+* Default value: -1
+
 scroll-step
 ^^^^^^^^^^^
 Defines the step size of scrolling by calling the scroll command once
@@ -584,6 +591,20 @@ Defines if the last/first page should be wrapped
 * Value type: Boolean
 * Default value: false
 
+search-hadjust
+^^^^^^^^^^^^^^
+En/Disables horizontally centered search results
+
+* Value-type: Boolean
+* Default value: true
+
+zoom-center
+^^^^^^^^^^^
+En/Disables horizontally centered zooming
+
+* Value-type: Bool
+* Default value: False
+
 zoom-max
 ^^^^^^^^
 Defines the maximum percentage that the zoom level can be