[gimp] app: show full image contents in GimpNavigationEditor



commit a33f5498960cd78d43ec5db5bddee3e7ceae8ab0
Author: Ell <ell_se yahoo com>
Date:   Wed Sep 4 17:35:53 2019 +0300

    app: show full image contents in GimpNavigationEditor
    
    In GimpNavigation{Editor,View}, show the full image contents when
    the corresponding display is in "show all" mode.  Additionally,
    when the display's "show canvas boundary" is active, show the
    canvas boundary in the navigation view as well.

 app/display/gimpnavigationeditor.c | 215 +++++++++++++++++++++++++++++--------
 app/display/gimpnavigationeditor.h |  28 ++---
 app/widgets/gimpnavigationview.c   |  97 +++++++++++++++--
 app/widgets/gimpnavigationview.h   |   6 ++
 4 files changed, 276 insertions(+), 70 deletions(-)
---
diff --git a/app/display/gimpnavigationeditor.c b/app/display/gimpnavigationeditor.c
index bd8f032b24..88f1d3665c 100644
--- a/app/display/gimpnavigationeditor.c
+++ b/app/display/gimpnavigationeditor.c
@@ -36,6 +36,7 @@
 #include "core/gimp.h"
 #include "core/gimpcontext.h"
 #include "core/gimpimage.h"
+#include "core/gimpimageviewable.h"
 
 #include "widgets/gimpdocked.h"
 #include "widgets/gimphelp-ids.h"
@@ -46,6 +47,7 @@
 
 #include "gimpdisplay.h"
 #include "gimpdisplayshell.h"
+#include "gimpdisplayshell-appearance.h"
 #include "gimpdisplayshell-scale.h"
 #include "gimpdisplayshell-scroll.h"
 #include "gimpdisplayshell-transform.h"
@@ -57,47 +59,58 @@
 #define UPDATE_DELAY 300 /* From GtkRange in GTK+ 2.22 */
 
 
-static void        gimp_navigation_editor_docked_iface_init (GimpDockedInterface  *iface);
-
-static void        gimp_navigation_editor_dispose           (GObject              *object);
-
-static void        gimp_navigation_editor_set_context       (GimpDocked           *docked,
-                                                             GimpContext          *context);
-
-static GtkWidget * gimp_navigation_editor_new_private       (GimpMenuFactory      *menu_factory,
-                                                             GimpDisplayShell     *shell);
-
-static void        gimp_navigation_editor_set_shell         (GimpNavigationEditor *editor,
-                                                             GimpDisplayShell     *shell);
-static gboolean    gimp_navigation_editor_button_release    (GtkWidget            *widget,
-                                                             GdkEventButton       *bevent,
-                                                             GimpDisplayShell     *shell);
-static void        gimp_navigation_editor_marker_changed    (GimpNavigationView   *view,
-                                                             gdouble               center_x,
-                                                             gdouble               center_y,
-                                                             gdouble               width,
-                                                             gdouble               height,
-                                                             GimpNavigationEditor *editor);
-static void        gimp_navigation_editor_zoom              (GimpNavigationView   *view,
-                                                             GimpZoomType          direction,
-                                                             gdouble               delta,
-                                                             GimpNavigationEditor *editor);
-static void        gimp_navigation_editor_scroll            (GimpNavigationView   *view,
-                                                             GdkEventScroll       *sevent,
-                                                             GimpNavigationEditor *editor);
-
-static void        gimp_navigation_editor_zoom_adj_changed  (GtkAdjustment        *adj,
-                                                             GimpNavigationEditor *editor);
-
-static void        gimp_navigation_editor_shell_scaled      (GimpDisplayShell     *shell,
-                                                             GimpNavigationEditor *editor);
-static void        gimp_navigation_editor_shell_scrolled    (GimpDisplayShell     *shell,
-                                                             GimpNavigationEditor *editor);
-static void        gimp_navigation_editor_shell_rotated     (GimpDisplayShell     *shell,
-                                                             GimpNavigationEditor *editor);
-static void        gimp_navigation_editor_shell_reconnect   (GimpDisplayShell     *shell,
-                                                             GimpNavigationEditor *editor);
-static void        gimp_navigation_editor_update_marker     (GimpNavigationEditor *editor);
+static void        gimp_navigation_editor_docked_iface_init          (GimpDockedInterface  *iface);
+
+static void        gimp_navigation_editor_dispose                    (GObject              *object);
+
+static void        gimp_navigation_editor_set_context                (GimpDocked           *docked,
+                                                                      GimpContext          *context);
+
+static GtkWidget * gimp_navigation_editor_new_private                (GimpMenuFactory      *menu_factory,
+                                                                      GimpDisplayShell     *shell);
+
+static void        gimp_navigation_editor_set_shell                  (GimpNavigationEditor *editor,
+                                                                      GimpDisplayShell     *shell);
+static gboolean    gimp_navigation_editor_button_release             (GtkWidget            *widget,
+                                                                      GdkEventButton       *bevent,
+                                                                      GimpDisplayShell     *shell);
+static void        gimp_navigation_editor_marker_changed             (GimpNavigationView   *view,
+                                                                      gdouble               center_x,
+                                                                      gdouble               center_y,
+                                                                      gdouble               width,
+                                                                      gdouble               height,
+                                                                      GimpNavigationEditor *editor);
+static void        gimp_navigation_editor_zoom                       (GimpNavigationView   *view,
+                                                                      GimpZoomType          direction,
+                                                                      gdouble               delta,
+                                                                      GimpNavigationEditor *editor);
+static void        gimp_navigation_editor_scroll                     (GimpNavigationView   *view,
+                                                                      GdkEventScroll       *sevent,
+                                                                      GimpNavigationEditor *editor);
+
+static void        gimp_navigation_editor_zoom_adj_changed           (GtkAdjustment        *adj,
+                                                                      GimpNavigationEditor *editor);
+
+static void        gimp_navigation_editor_shell_show_all_notify      (GimpDisplayShell     *shell,
+                                                                      const GParamSpec     *pspec,
+                                                                      GimpNavigationEditor *editor);
+static void        gimp_navigation_editor_shell_scaled               (GimpDisplayShell     *shell,
+                                                                      GimpNavigationEditor *editor);
+static void        gimp_navigation_editor_shell_scrolled             (GimpDisplayShell     *shell,
+                                                                      GimpNavigationEditor *editor);
+static void        gimp_navigation_editor_shell_rotated              (GimpDisplayShell     *shell,
+                                                                      GimpNavigationEditor *editor);
+static void        gimp_navigation_editor_shell_reconnect            (GimpDisplayShell     *shell,
+                                                                      GimpNavigationEditor *editor);
+
+static void        gimp_navigation_editor_viewable_size_changed      (GimpViewable         *viewable,
+                                                                      GimpNavigationEditor *editor);
+
+static void        gimp_navigation_editor_options_show_canvas_notify (GimpDisplayOptions   *options,
+                                                                      const GParamSpec     *pspec,
+                                                                      GimpNavigationEditor *editor);
+
+static void        gimp_navigation_editor_update_marker              (GimpNavigationEditor *editor);
 
 
 G_DEFINE_TYPE_WITH_CODE (GimpNavigationEditor, gimp_navigation_editor,
@@ -138,7 +151,7 @@ gimp_navigation_editor_init (GimpNavigationEditor *editor)
 
   editor->view = gimp_view_new_by_types (NULL,
                                          GIMP_TYPE_NAVIGATION_VIEW,
-                                         GIMP_TYPE_IMAGE,
+                                         GIMP_TYPE_IMAGE_VIEWABLE,
                                          GIMP_VIEW_SIZE_MEDIUM, 0, TRUE);
   gtk_container_add (GTK_CONTAINER (frame), editor->view);
   gtk_widget_show (editor->view);
@@ -469,6 +482,9 @@ gimp_navigation_editor_set_shell (GimpNavigationEditor *editor,
 
   if (editor->shell)
     {
+      g_signal_handlers_disconnect_by_func (editor->shell,
+                                            gimp_navigation_editor_shell_show_all_notify,
+                                            editor);
       g_signal_handlers_disconnect_by_func (editor->shell,
                                             gimp_navigation_editor_shell_scaled,
                                             editor);
@@ -481,6 +497,13 @@ gimp_navigation_editor_set_shell (GimpNavigationEditor *editor,
       g_signal_handlers_disconnect_by_func (editor->shell,
                                             gimp_navigation_editor_shell_reconnect,
                                             editor);
+
+      g_signal_handlers_disconnect_by_func (editor->shell->options,
+                                            gimp_navigation_editor_options_show_canvas_notify,
+                                            editor);
+      g_signal_handlers_disconnect_by_func (editor->shell->fullscreen_options,
+                                            gimp_navigation_editor_options_show_canvas_notify,
+                                            editor);
     }
   else if (shell)
     {
@@ -493,9 +516,24 @@ gimp_navigation_editor_set_shell (GimpNavigationEditor *editor,
     {
       GimpImage *image = gimp_display_get_image (shell->display);
 
+      g_clear_object (&editor->image_viewable);
+
+      if (image)
+        {
+          editor->image_viewable = gimp_image_viewable_new (image);
+
+          g_signal_connect (
+            editor->image_viewable, "size-changed",
+            G_CALLBACK (gimp_navigation_editor_viewable_size_changed),
+            editor);
+        }
+
       gimp_view_set_viewable (GIMP_VIEW (editor->view),
-                              GIMP_VIEWABLE (image));
+                              GIMP_VIEWABLE (editor->image_viewable));
 
+      g_signal_connect (editor->shell, "notify::show-all",
+                        G_CALLBACK (gimp_navigation_editor_shell_show_all_notify),
+                        editor);
       g_signal_connect (editor->shell, "scaled",
                         G_CALLBACK (gimp_navigation_editor_shell_scaled),
                         editor);
@@ -509,12 +547,21 @@ gimp_navigation_editor_set_shell (GimpNavigationEditor *editor,
                         G_CALLBACK (gimp_navigation_editor_shell_reconnect),
                         editor);
 
+      g_signal_connect (editor->shell->options, "notify::show-canvas-boundary",
+                        G_CALLBACK (gimp_navigation_editor_options_show_canvas_notify),
+                        editor);
+      g_signal_connect (editor->shell->fullscreen_options, "notify::show-canvas-boundary",
+                        G_CALLBACK (gimp_navigation_editor_options_show_canvas_notify),
+                        editor);
+
       gimp_navigation_editor_shell_scaled (editor->shell, editor);
     }
   else
     {
       gimp_view_set_viewable (GIMP_VIEW (editor->view), NULL);
       gtk_widget_set_sensitive (GTK_WIDGET (editor), FALSE);
+
+      g_clear_object (&editor->image_viewable);
     }
 
   if (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)))
@@ -543,11 +590,23 @@ gimp_navigation_editor_marker_changed (GimpNavigationView   *view,
                                        gdouble               height,
                                        GimpNavigationEditor *editor)
 {
+  GimpViewRenderer *renderer = GIMP_VIEW (editor->view)->renderer;
+
   if (editor->shell)
     {
       if (gimp_display_get_image (editor->shell->display))
-        gimp_display_shell_scroll_center_image_xy (editor->shell,
-                                                   center_x, center_y);
+        {
+          GeglRectangle bounding_box;
+
+          bounding_box = gimp_image_viewable_get_bounding_box (
+            GIMP_IMAGE_VIEWABLE (renderer->viewable));
+
+          center_x += bounding_box.x;
+          center_y += bounding_box.y;
+
+          gimp_display_shell_scroll_center_image_xy (editor->shell,
+                                                     center_x, center_y);
+        }
     }
 }
 
@@ -619,6 +678,18 @@ gimp_navigation_editor_zoom_adj_changed (GtkAdjustment        *adj,
                    editor);
 }
 
+static void
+gimp_navigation_editor_shell_show_all_notify (GimpDisplayShell     *shell,
+                                              const GParamSpec     *pspec,
+                                              GimpNavigationEditor *editor)
+{
+  gimp_navigation_editor_update_marker (editor);
+
+  if (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)))
+    gimp_ui_manager_update (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)),
+                            gimp_editor_get_popup_data (GIMP_EDITOR (editor)));
+}
+
 static void
 gimp_navigation_editor_shell_scaled (GimpDisplayShell     *shell,
                                      GimpNavigationEditor *editor)
@@ -680,14 +751,45 @@ gimp_navigation_editor_shell_rotated (GimpDisplayShell     *shell,
                             gimp_editor_get_popup_data (GIMP_EDITOR (editor)));
 }
 
+static void
+gimp_navigation_editor_viewable_size_changed (GimpViewable         *viewable,
+                                              GimpNavigationEditor *editor)
+{
+  gimp_navigation_editor_update_marker (editor);
+
+  if (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)))
+    gimp_ui_manager_update (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)),
+                            gimp_editor_get_popup_data (GIMP_EDITOR (editor)));
+}
+
+static void
+gimp_navigation_editor_options_show_canvas_notify (GimpDisplayOptions   *options,
+                                                   const GParamSpec     *pspec,
+                                                   GimpNavigationEditor *editor)
+{
+  gimp_navigation_editor_update_marker (editor);
+}
+
 static void
 gimp_navigation_editor_shell_reconnect (GimpDisplayShell     *shell,
                                         GimpNavigationEditor *editor)
 {
   GimpImage *image = gimp_display_get_image (shell->display);
 
+  g_clear_object (&editor->image_viewable);
+
+  if (image)
+    {
+      editor->image_viewable = gimp_image_viewable_new (image);
+
+      g_signal_connect (
+        editor->image_viewable, "size-changed",
+        G_CALLBACK (gimp_navigation_editor_viewable_size_changed),
+        editor);
+    }
+
   gimp_view_set_viewable (GIMP_VIEW (editor->view),
-                          GIMP_VIEWABLE (image));
+                          GIMP_VIEWABLE (editor->image_viewable));
 
   if (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)))
     gimp_ui_manager_update (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)),
@@ -706,19 +808,40 @@ gimp_navigation_editor_update_marker (GimpNavigationEditor *editor)
   if (renderer->viewable)
     {
       GimpNavigationView *view = GIMP_NAVIGATION_VIEW (editor->view);
+      GimpImage          *image;
+      GeglRectangle       bounding_box;
       gdouble             x, y;
       gdouble             w, h;
 
+      image = gimp_image_viewable_get_image (
+        GIMP_IMAGE_VIEWABLE (renderer->viewable));
+
+      gimp_image_viewable_set_show_all (
+        GIMP_IMAGE_VIEWABLE (renderer->viewable),
+        shell->show_all);
+
+      bounding_box = gimp_image_viewable_get_bounding_box (
+        GIMP_IMAGE_VIEWABLE (renderer->viewable));
+
       gimp_display_shell_scroll_get_viewport (shell, &x, &y, &w, &h);
       gimp_display_shell_untransform_xy_f (shell,
                                            shell->disp_width  / 2,
                                            shell->disp_height / 2,
                                            &x, &y);
 
+      x -= bounding_box.x;
+      y -= bounding_box.y;
+
       gimp_navigation_view_set_marker (view,
                                        x, y, w, h,
                                        shell->flip_horizontally,
                                        shell->flip_vertically,
                                        shell->rotate_angle);
+
+      gimp_navigation_view_set_canvas (
+        view,
+        shell->show_all && gimp_display_shell_get_show_canvas (shell),
+        -bounding_box.x,              -bounding_box.y,
+        gimp_image_get_width (image), gimp_image_get_height (image));
     }
 }
diff --git a/app/display/gimpnavigationeditor.h b/app/display/gimpnavigationeditor.h
index 7c8399630e..17e30e2a81 100644
--- a/app/display/gimpnavigationeditor.h
+++ b/app/display/gimpnavigationeditor.h
@@ -40,23 +40,25 @@ typedef struct _GimpNavigationEditorClass  GimpNavigationEditorClass;
 
 struct _GimpNavigationEditor
 {
-  GimpEditor        parent_instance;
+  GimpEditor         parent_instance;
 
-  GimpContext      *context;
-  GimpDisplayShell *shell;
+  GimpContext       *context;
+  GimpDisplayShell  *shell;
 
-  GtkWidget        *view;
-  GtkWidget        *zoom_label;
-  GtkAdjustment    *zoom_adjustment;
+  GimpImageViewable *image_viewable;
 
-  GtkWidget        *zoom_out_button;
-  GtkWidget        *zoom_in_button;
-  GtkWidget        *zoom_100_button;
-  GtkWidget        *zoom_fit_in_button;
-  GtkWidget        *zoom_fill_button;
-  GtkWidget        *shrink_wrap_button;
+  GtkWidget         *view;
+  GtkWidget         *zoom_label;
+  GtkAdjustment     *zoom_adjustment;
 
-  guint             scale_timeout;
+  GtkWidget         *zoom_out_button;
+  GtkWidget         *zoom_in_button;
+  GtkWidget         *zoom_100_button;
+  GtkWidget         *zoom_fit_in_button;
+  GtkWidget         *zoom_fill_button;
+  GtkWidget         *shrink_wrap_button;
+
+  guint              scale_timeout;
 };
 
 struct _GimpNavigationEditorClass
diff --git a/app/widgets/gimpnavigationview.c b/app/widgets/gimpnavigationview.c
index 70feedf542..d2524a38c9 100644
--- a/app/widgets/gimpnavigationview.c
+++ b/app/widgets/gimpnavigationview.c
@@ -36,6 +36,8 @@
 #include "core/gimpimage.h"
 #include "core/gimpmarshal.h"
 
+#include "display/gimpcanvas-style.h"
+
 #include "gimpnavigationview.h"
 #include "gimpviewrenderer.h"
 #include "gimpwidgets-utils.h"
@@ -66,12 +68,23 @@ struct _GimpNavigationView
   gboolean     flip_vertically;
   gdouble      rotate_angle;
 
+  gboolean     canvas_visible;
+  gdouble      canvas_x;
+  gdouble      canvas_y;
+  gdouble      canvas_width;
+  gdouble      canvas_height;
+
   /*  values in view coordinates  */
   gint         p_center_x;
   gint         p_center_y;
   gint         p_width;
   gint         p_height;
 
+  gint         p_canvas_x;
+  gint         p_canvas_y;
+  gint         p_canvas_width;
+  gint         p_canvas_height;
+
   gint         motion_offset_x;
   gint         motion_offset_y;
   gboolean     has_grab;
@@ -180,11 +193,22 @@ gimp_navigation_view_init (GimpNavigationView *view)
   view->flip_vertically   = FALSE;
   view->rotate_angle      = 0.0;
 
+  view->canvas_visible    = FALSE;
+  view->canvas_x          = 0.0;
+  view->canvas_y          = 0.0;
+  view->canvas_width      = 0.0;
+  view->canvas_height     = 0.0;
+
   view->p_center_x      = 0;
   view->p_center_y      = 0;
   view->p_width         = 0;
   view->p_height        = 0;
 
+  view->p_canvas_x      = 0;
+  view->p_canvas_y      = 0;
+  view->p_canvas_width  = 0;
+  view->p_canvas_height = 0;
+
   view->motion_offset_x = 0;
   view->motion_offset_y = 0;
   view->has_grab        = FALSE;
@@ -449,6 +473,34 @@ gimp_navigation_view_set_marker (GimpNavigationView *nav_view,
   gtk_widget_queue_draw (GTK_WIDGET (view));
 }
 
+void
+gimp_navigation_view_set_canvas (GimpNavigationView *nav_view,
+                                 gboolean            visible,
+                                 gdouble             x,
+                                 gdouble             y,
+                                 gdouble             width,
+                                 gdouble             height)
+{
+  GimpView *view;
+
+  g_return_if_fail (GIMP_IS_NAVIGATION_VIEW (nav_view));
+
+  view = GIMP_VIEW (nav_view);
+
+  g_return_if_fail (view->renderer->viewable);
+
+  nav_view->canvas_visible = visible;
+  nav_view->canvas_x       = x;
+  nav_view->canvas_y       = y;
+  nav_view->canvas_width   = MAX (1.0, width);
+  nav_view->canvas_height  = MAX (1.0, height);
+
+  gimp_navigation_view_transform (nav_view);
+
+  /* Marker changed, redraw */
+  gtk_widget_queue_draw (GTK_WIDGET (view));
+}
+
 void
 gimp_navigation_view_set_motion_offset (GimpNavigationView *view,
                                         gint                motion_offset_x,
@@ -490,6 +542,12 @@ gimp_navigation_view_transform (GimpNavigationView *nav_view)
 
   nav_view->p_width  = ceil (nav_view->width  * ratiox);
   nav_view->p_height = ceil (nav_view->height * ratioy);
+
+  nav_view->p_canvas_x = RINT (nav_view->canvas_x * ratiox);
+  nav_view->p_canvas_y = RINT (nav_view->canvas_y * ratioy);
+
+  nav_view->p_canvas_width  = ceil (nav_view->canvas_width  * ratiox);
+  nav_view->p_canvas_height = ceil (nav_view->canvas_height * ratioy);
 }
 
 static void
@@ -500,11 +558,12 @@ gimp_navigation_view_draw_marker (GimpNavigationView *nav_view,
 
   if (view->renderer->viewable && nav_view->width && nav_view->height)
     {
-      GtkWidget     *widget = GTK_WIDGET (view);
-      GtkAllocation  allocation;
-      gint           p_width_2;
-      gint           p_height_2;
-      gdouble        angle;
+      GtkWidget      *widget = GTK_WIDGET (view);
+      GtkAllocation   allocation;
+      cairo_matrix_t  matrix;
+      gint            p_width_2;
+      gint            p_height_2;
+      gdouble         angle;
 
       p_width_2  = nav_view->p_width  / 2;
       p_height_2 = nav_view->p_height / 2;
@@ -515,6 +574,8 @@ gimp_navigation_view_draw_marker (GimpNavigationView *nav_view,
 
       gtk_widget_get_allocation (widget, &allocation);
 
+      cairo_get_matrix (cr, &matrix);
+
       cairo_rectangle (cr,
                        0, 0,
                        allocation.width, allocation.height);
@@ -528,6 +589,21 @@ gimp_navigation_view_draw_marker (GimpNavigationView *nav_view,
       cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
       cairo_fill (cr);
 
+      if (nav_view->canvas_visible &&
+          nav_view->canvas_width && nav_view->canvas_height)
+        {
+          cairo_save (cr);
+          cairo_set_matrix (cr, &matrix);
+          cairo_rectangle (cr,
+                           nav_view->p_canvas_x      + 0.5,
+                           nav_view->p_canvas_y      + 0.5,
+                           nav_view->p_canvas_width  - 1.0,
+                           nav_view->p_canvas_height - 1.0);
+          gimp_canvas_set_canvas_style (GTK_WIDGET (nav_view), cr, 0, 0);
+          cairo_stroke (cr);
+          cairo_restore (cr);
+        }
+
       cairo_rectangle (cr,
                        -p_width_2, -p_height_2,
                        nav_view->p_width, nav_view->p_height);
@@ -565,14 +641,13 @@ gimp_navigation_view_get_ratio (GimpNavigationView *nav_view,
                                 gdouble            *ratioy)
 {
   GimpView  *view = GIMP_VIEW (nav_view);
-  GimpImage *image;
+  gint       width;
+  gint       height;
 
-  image = GIMP_IMAGE (view->renderer->viewable);
+  gimp_viewable_get_size (view->renderer->viewable, &width, &height);
 
-  *ratiox = (gdouble) view->renderer->width  /
-            (gdouble) gimp_image_get_width  (image);
-  *ratioy = (gdouble) view->renderer->height /
-            (gdouble) gimp_image_get_height (image);
+  *ratiox = (gdouble) view->renderer->width  / (gdouble) width;
+  *ratioy = (gdouble) view->renderer->height / (gdouble) height;
 }
 
 static gboolean
diff --git a/app/widgets/gimpnavigationview.h b/app/widgets/gimpnavigationview.h
index 4686145449..3c254fd755 100644
--- a/app/widgets/gimpnavigationview.h
+++ b/app/widgets/gimpnavigationview.h
@@ -64,6 +64,12 @@ void    gimp_navigation_view_set_marker   (GimpNavigationView *view,
                                            gboolean            flip_horizontally,
                                            gboolean            flip_vertically,
                                            gdouble             rotate_angle);
+void    gimp_navigation_view_set_canvas   (GimpNavigationView *view,
+                                           gboolean            visible,
+                                           gdouble             x,
+                                           gdouble             y,
+                                           gdouble             width,
+                                           gdouble             height);
 void    gimp_navigation_view_set_motion_offset
                                           (GimpNavigationView *view,
                                            gint                motion_offset_x,


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