Add zoom reset

origin commit:
linuxmint/xreader@43acb8f

data/atril-previewer-ui.xml

@@ -9,6 +9,7 @@
     <toolitem name="ViewFitPage" action="ViewFitPage"/>
     <toolitem name="ViewZoomIn" action="ViewZoomIn"/>
     <toolitem name="ViewZoomOut" action="ViewZoomOut"/>
+    <toolitem name="ViewZoomReset" action="ViewZoomReset"/>
     <separator/>
     <toolitem name="PreviewPrint" action="PreviewPrint"/>
   </toolbar>

data/atril-toolbar.xml

@@ -14,6 +14,7 @@
     <toolitem name="ViewZoom"/>
     <toolitem name="ViewZoomIn"/>
     <toolitem name="ViewZoomOut"/>
+    <toolitem name="ViewZoomReset"/>
     <toolitem name="ViewFitPage"/>
     <toolitem name="ViewFitWidth"/>
     <toolitem name="ViewFullscreen"/>

data/atril-ui.xml

@@ -49,6 +49,7 @@
       <separator/>
       <menuitem name="ViewZoomInMenu" action="ViewZoomIn"/>
       <menuitem name="ViewZoomOutMenu" action="ViewZoomOut"/>
+      <menuitem name="ViewZoomResetMenu" action="ViewZoomReset"/>
       <menuitem name="ViewFitPageMenu" action="ViewFitPage"/>
       <menuitem name="ViewFitWidthMenu" action="ViewFitWidth"/>
       <menuitem name="ViewExpandWindowMenu" action="ViewExpandWindow"/>

libview/ev-view.c

@@ -7088,6 +7088,13 @@ ev_view_zoom_out (EvView *view)
 	ev_view_zoom (view, ZOOM_OUT_FACTOR);
 }
 
+void
+ev_view_zoom_reset (EvView *view)
+{
+	g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
+	ev_document_model_set_scale (view->model, 1.2);
+}
+
 static double
 zoom_for_size_fit_width (gdouble doc_width,
 			 gdouble doc_height,

libview/ev-view.h

@@ -63,6 +63,7 @@ gboolean	ev_view_can_zoom_in       (EvView         *view);
 void		ev_view_zoom_in		  (EvView         *view);
 gboolean        ev_view_can_zoom_out      (EvView         *view);
 void		ev_view_zoom_out	  (EvView         *view);
+void		ev_view_zoom_reset	  (EvView         *view);
 void		ev_view_zoom		  (EvView         *view,
 		                           gdouble       factor);
 

libview/ev-web-view.c

@@ -687,6 +687,17 @@ ev_web_view_zoom_out(EvWebView *webview)
 	return TRUE;
 }
 
+gboolean
+ev_web_view_zoom_reset(EvWebView *webview)
+{
+	if (webview->zoom_level == 1)
+	    return FALSE;
+
+	webkit_web_view_set_zoom_level (WEBKIT_WEB_VIEW(webview),
+	                                1.0);
+	return TRUE;
+}
+
 /**
  * ev_web_view_disconnect_handlers
  * @webview : #EvWebView instance

libview/ev-web-view.h

@@ -83,6 +83,7 @@ void		ev_web_view_copy				   (EvWebView  *webview);
 /* Zoom control */
 gboolean     ev_web_view_zoom_in               (EvWebView *webview);
 gboolean     ev_web_view_zoom_out              (EvWebView *webview);
+gboolean     ev_web_view_zoom_reset            (EvWebView *webview);
 
 /*For safe replacement by an EvView*/
 void       ev_web_view_disconnect_handlers    (EvWebView  *webview);

previewer/ev-previewer-window.c

@@ -138,6 +138,14 @@ ev_previewer_window_zoom_out (GtkAction         *action,
 	ev_view_zoom_out (window->view);
 }
 
+static void
+ev_previewer_window_zoom_reset (GtkAction         *action,
+			      EvPreviewerWindow *window)
+{
+	ev_document_model_set_sizing_mode (window->model, EV_SIZING_FREE);
+	ev_view_zoom_reset (window->view);
+}
+
 static void
 ev_previewer_window_zoom_fit_page (GtkToggleAction   *action,
 				   EvPreviewerWindow *window)
@@ -284,6 +292,9 @@ static const GtkActionEntry action_entries[] = {
         { "ViewZoomOut", "zoom-out", N_("Zoom _Out"), "<control>minus",
           N_("Shrink the document"),
           G_CALLBACK (ev_previewer_window_zoom_out) },
+        { "ViewZoomReset", "zoom-original", NULL, "<control>0",
+          N_("Reset zoom to 100\%"),
+          G_CALLBACK (ev_previewer_window_zoom_reset) },
 #if GTKUNIXPRINT_ENABLED
 	/* translators: Print document currently shown in the Print Preview window */
 	{ "PreviewPrint", "document-print", N_("Print"), NULL,

shell/ev-window.c

@@ -575,6 +575,9 @@ ev_window_update_actions (EvWindow *ev_window)
 						has_pages &&
 						ev_view_can_zoom_out (view) &&
 						!presentation_mode);
+		ev_window_set_action_sensitive (ev_window, "ViewZoomReset",
+						has_pages &&
+						!presentation_mode);
 		ev_window_set_action_sensitive (ev_window, "ViewDualOddLeft",
 						dual_mode);
 	}
@@ -4724,6 +4727,23 @@ ev_window_cmd_view_zoom_out (GtkAction *action, EvWindow *ev_window)
 	}
 }
 
+static void
+ev_window_cmd_view_zoom_reset (GtkAction *action, EvWindow *ev_window)
+{
+	g_return_if_fail (EV_IS_WINDOW (ev_window));
+
+	ev_document_model_set_sizing_mode (ev_window->priv->model, EV_SIZING_FREE);
+#if ENABLE_EPUB
+	if ( ev_window->priv->document->iswebdocument)  {
+	        ev_web_view_zoom_reset(EV_WEB_VIEW(ev_window->priv->webview));
+	}
+	else
+#endif
+	{
+	        ev_view_zoom_reset (EV_VIEW (ev_window->priv->view));
+	}
+}
+
 static void
 ev_window_cmd_go_previous_page (GtkAction *action, EvWindow *ev_window)
 {
@@ -6300,6 +6320,9 @@ static const GtkActionEntry entries[] = {
         { "ViewZoomOut", "zoom-out", N_("Zoom _Out"), "<control>minus",
           N_("Shrink the document"),
           G_CALLBACK (ev_window_cmd_view_zoom_out) },
+        { "ViewZoomReset", "zoom-original", N_("_Reset Zoom"), "<control>0",
+          N_("Reset zoom to 100\%"),
+          G_CALLBACK (ev_window_cmd_view_zoom_reset) },
         { "ViewReload", "view-refresh", N_("_Reload"), "<control>R",
           N_("Reload the document"),
           G_CALLBACK (ev_window_cmd_view_reload) },
@@ -6653,6 +6676,10 @@ set_action_properties (GtkActionGroup *action_group)
 	/*translators: this is the label for toolbar button*/
 	g_object_set (action, "short_label", _("Zoom Out"), NULL);
 
+	action = gtk_action_group_get_action (action_group, "ViewZoomReset");
+	/*translators: this is the label for toolbar button*/
+	g_object_set (action, "short_label", _("Reset Zoom"), NULL);
+
 	action = gtk_action_group_get_action (action_group, "ViewFitPage");
 	/*translators: this is the label for toolbar button*/
 	g_object_set (action, "short_label", _("Fit Page"), NULL);