[gthumb] added a zoom popover
- From: Paolo Bacchilega <paobac src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gthumb] added a zoom popover
- Date: Fri, 1 Jan 2016 21:13:57 +0000 (UTC)
commit 96e61893dfc311184e5af91dee10e44b1df560e7
Author: Paolo Bacchilega <paobac src gnome org>
Date: Fri Jan 1 21:53:40 2016 +0100
added a zoom popover
extensions/image_viewer/actions.c | 47 ++++++
extensions/image_viewer/actions.h | 2 +
extensions/image_viewer/data/ui/Makefile.am | 2 +-
.../image_viewer/data/ui/toolbar-zoom-menu.ui | 131 +++++++++++++++++
extensions/image_viewer/gth-image-viewer-page.c | 148 +++++++++++++++-----
gthumb/gth-browser.c | 21 +++-
gthumb/gth-browser.h | 6 +
7 files changed, 318 insertions(+), 39 deletions(-)
---
diff --git a/extensions/image_viewer/actions.c b/extensions/image_viewer/actions.c
index be11eff..53dbddb 100644
--- a/extensions/image_viewer/actions.c
+++ b/extensions/image_viewer/actions.c
@@ -75,6 +75,18 @@ gth_browser_activate_image_zoom_fit (GSimpleAction *action,
void
+gth_browser_activate_image_zoom_fit_if_larger (GSimpleAction *action,
+ GVariant *parameter,
+ gpointer user_data)
+{
+ GthBrowser *browser = user_data;
+ GthImageViewerPage *self = GTH_IMAGE_VIEWER_PAGE (gth_browser_get_viewer_page (browser));
+
+ gth_image_viewer_set_fit_mode (GTH_IMAGE_VIEWER (gth_image_viewer_page_get_image_viewer (self)),
GTH_FIT_SIZE_IF_LARGER);
+}
+
+
+void
gth_browser_activate_image_zoom_fit_width (GSimpleAction *action,
GVariant *parameter,
gpointer user_data)
@@ -148,3 +160,38 @@ gth_browser_activate_apply_icc_profile (GSimpleAction *action,
g_simple_action_set_state (action, state);
gth_image_viewer_page_apply_icc_profile (GTH_IMAGE_VIEWER_PAGE (gth_browser_get_viewer_page
(browser)), g_variant_get_boolean (state));
}
+
+
+void
+gth_browser_activate_image_zoom (GSimpleAction *action,
+ GVariant *parameter,
+ gpointer user_data)
+{
+ GthBrowser *browser = user_data;
+ const char *state;
+ GthImageViewer *image_viewer;
+
+ state = g_variant_get_string (parameter, NULL);
+ g_simple_action_set_state (action, g_variant_new_string (state));
+
+ if (state == NULL)
+ return;
+
+ image_viewer = GTH_IMAGE_VIEWER (gth_image_viewer_page_get_image_viewer (GTH_IMAGE_VIEWER_PAGE
(gth_browser_get_viewer_page (browser))));
+ if (strcmp (state, "automatic") == 0)
+ gth_image_viewer_set_fit_mode (image_viewer, GTH_FIT_SIZE_IF_LARGER);
+ else if (strcmp (state, "fit") == 0)
+ gth_image_viewer_set_fit_mode (image_viewer, GTH_FIT_SIZE);
+ else if (strcmp (state, "fit-width") == 0)
+ gth_image_viewer_set_fit_mode (image_viewer, GTH_FIT_WIDTH);
+ else if (strcmp (state, "fit-height") == 0)
+ gth_image_viewer_set_fit_mode (image_viewer, GTH_FIT_HEIGHT);
+ else if (strcmp (state, "50") == 0)
+ gth_image_viewer_set_zoom (image_viewer, 0.5);
+ else if (strcmp (state, "100") == 0)
+ gth_image_viewer_set_zoom (image_viewer, 1.0);
+ else if (strcmp (state, "200") == 0)
+ gth_image_viewer_set_zoom (image_viewer, 2.0);
+ else if (strcmp (state, "300") == 0)
+ gth_image_viewer_set_zoom (image_viewer, 3.0);
+}
diff --git a/extensions/image_viewer/actions.h b/extensions/image_viewer/actions.h
index 9dc0450..ea6c2d9 100644
--- a/extensions/image_viewer/actions.h
+++ b/extensions/image_viewer/actions.h
@@ -28,6 +28,7 @@ DEF_ACTION_CALLBACK (gth_browser_activate_image_zoom_in)
DEF_ACTION_CALLBACK (gth_browser_activate_image_zoom_out)
DEF_ACTION_CALLBACK (gth_browser_activate_image_zoom_100)
DEF_ACTION_CALLBACK (gth_browser_activate_image_zoom_fit)
+DEF_ACTION_CALLBACK (gth_browser_activate_image_zoom_fit_if_larger)
DEF_ACTION_CALLBACK (gth_browser_activate_image_zoom_fit_width)
DEF_ACTION_CALLBACK (gth_browser_activate_image_zoom_fit_height)
DEF_ACTION_CALLBACK (gth_browser_activate_image_undo)
@@ -35,5 +36,6 @@ DEF_ACTION_CALLBACK (gth_browser_activate_image_redo)
DEF_ACTION_CALLBACK (gth_browser_activate_copy_image)
DEF_ACTION_CALLBACK (gth_browser_activate_paste_image)
DEF_ACTION_CALLBACK (gth_browser_activate_apply_icc_profile)
+DEF_ACTION_CALLBACK (gth_browser_activate_image_zoom)
#endif /* ACTIONS_H */
diff --git a/extensions/image_viewer/data/ui/Makefile.am b/extensions/image_viewer/data/ui/Makefile.am
index a6711df..5e60765 100644
--- a/extensions/image_viewer/data/ui/Makefile.am
+++ b/extensions/image_viewer/data/ui/Makefile.am
@@ -1,5 +1,5 @@
uidir = $(pkgdatadir)/ui
-ui_DATA = image-viewer-preferences.ui
+ui_DATA = image-viewer-preferences.ui toolbar-zoom-menu.ui
EXTRA_DIST = $(ui_DATA)
-include $(top_srcdir)/git.mk
diff --git a/extensions/image_viewer/data/ui/toolbar-zoom-menu.ui
b/extensions/image_viewer/data/ui/toolbar-zoom-menu.ui
new file mode 100644
index 0000000..c2fb8b8
--- /dev/null
+++ b/extensions/image_viewer/data/ui/toolbar-zoom-menu.ui
@@ -0,0 +1,131 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<interface>
+ <object class ="GtkPopoverMenu" id="zoom_popover">
+ <child>
+ <object class="GtkBox">
+ <property name="visible">True</property>
+ <property name="can_focus">False</property>
+ <property name="border_width">9</property>
+ <property name="orientation">vertical</property>
+ <property name="width_request">200</property>
+ <child>
+ <object class="GtkBox" id="sort_menu">
+ <property name="visible">True</property>
+ <property name="can_focus">False</property>
+ <property name="orientation">vertical</property>
+ <child>
+ <object class="GtkModelButton">
+ <property name="visible">True</property>
+ <property name="can_focus">True</property>
+ <property name="text" translatable="yes">Automatic</property>
+ <property name="action-name">win.image-zoom</property>
+ <property name="action-target">'automatic'</property>
+ </object>
+ </child>
+ <child>
+ <object class="GtkModelButton">
+ <property name="visible">True</property>
+ <property name="can_focus">True</property>
+ <property name="text" translatable="yes">Fit to window</property>
+ <property name="action-name">win.image-zoom</property>
+ <property name="action-target">'fit'</property>
+ </object>
+ </child>
+ <child>
+ <object class="GtkModelButton">
+ <property name="visible">True</property>
+ <property name="can_focus">True</property>
+ <property name="text" translatable="yes">Fit to width</property>
+ <property name="action-name">win.image-zoom</property>
+ <property name="action-target">'fit-width'</property>
+ </object>
+ </child>
+ <child>
+ <object class="GtkModelButton">
+ <property name="visible">True</property>
+ <property name="can_focus">True</property>
+ <property name="text" translatable="yes">Fit to height</property>
+ <property name="action-name">win.image-zoom</property>
+ <property name="action-target">'fit-height'</property>
+ </object>
+ </child>
+ <child>
+ <object class="GtkSeparator">
+ <property name="visible">True</property>
+ <property name="orientation">horizontal</property>
+ <property name="margin-top">6</property>
+ <property name="margin-bottom">6</property>
+ </object>
+ </child>
+ <child>
+ <object class="GtkModelButton">
+ <property name="visible">True</property>
+ <property name="can_focus">True</property>
+ <property name="text" translatable="yes">50%</property>
+ <property name="action-name">win.image-zoom</property>
+ <property name="action-target">'50'</property>
+ </object>
+ </child>
+ <child>
+ <object class="GtkModelButton">
+ <property name="visible">True</property>
+ <property name="can_focus">True</property>
+ <property name="text" translatable="yes">100%</property>
+ <property name="action-name">win.image-zoom</property>
+ <property name="action-target">'100'</property>
+ </object>
+ </child>
+ <child>
+ <object class="GtkModelButton">
+ <property name="visible">True</property>
+ <property name="can_focus">True</property>
+ <property name="text" translatable="yes">200%</property>
+ <property name="action-name">win.image-zoom</property>
+ <property name="action-target">'200'</property>
+ </object>
+ </child>
+ <child>
+ <object class="GtkModelButton">
+ <property name="visible">True</property>
+ <property name="can_focus">True</property>
+ <property name="text" translatable="yes">300%</property>
+ <property name="action-name">win.image-zoom</property>
+ <property name="action-target">'300'</property>
+ </object>
+ </child>
+ <child>
+ <object class="GtkSeparator">
+ <property name="visible">True</property>
+ <property name="orientation">horizontal</property>
+ <property name="margin-top">6</property>
+ <property name="margin-bottom">6</property>
+ </object>
+ </child>
+ <child>
+ <object class="GtkScale" id="zoom_level_scale">
+ <property name="visible">True</property>
+ <property name="can_focus">True</property>
+ <property name="draw_value">False</property>
+ <property name="has_origin">False</property>
+ <property name="adjustment">zoom_adjustment</property>
+ <property name="round_digits">0</property>
+ <property name="restrict_to_fill_level">False</property>
+ </object>
+ <packing>
+ <property name="expand">True</property>
+ <property name="fill">True</property>
+ </packing>
+ </child>
+ </object>
+ </child>
+ </object>
+ </child>
+ </object>
+ <object class="GtkAdjustment" id="zoom_adjustment">
+ <property name="lower">0</property>
+ <property name="upper">100</property>
+ <property name="step_increment">1</property>
+ <property name="page_increment">1</property>
+ <property name="value">1</property>
+ </object>
+</interface>
diff --git a/extensions/image_viewer/gth-image-viewer-page.c b/extensions/image_viewer/gth-image-viewer-page.c
index ed4fb15..d9633a2 100644
--- a/extensions/image_viewer/gth-image-viewer-page.c
+++ b/extensions/image_viewer/gth-image-viewer-page.c
@@ -30,10 +30,11 @@
#define UPDATE_QUALITY_DELAY 200
#define UPDATE_VISIBILITY_DELAY 100
-#define N_HEADER_BAR_BUTTONS 5
+#define N_HEADER_BAR_BUTTONS 4
#define HIDE_OVERVIEW_TIMEOUT 2 /* in seconds */
#define OVERLAY_MARGIN 10
-#define APPLY_ICC_PROFILE_BUTTON 4
+#define ZOOM_BUTTON 2
+#define APPLY_ICC_PROFILE_BUTTON 3
#undef ALWAYS_LOAD_ORIGINAL_SIZE
@@ -52,6 +53,7 @@ static const GActionEntry actions[] = {
{ "image-zoom-out", gth_browser_activate_image_zoom_out },
{ "image-zoom-100", gth_browser_activate_image_zoom_100 },
{ "image-zoom-fit", gth_browser_activate_image_zoom_fit },
+ { "image-zoom-fit-if-larger", gth_browser_activate_image_zoom_fit_if_larger },
{ "image-zoom-fit-width", gth_browser_activate_image_zoom_fit_width },
{ "image-zoom-fit-height", gth_browser_activate_image_zoom_fit_height },
{ "image-undo", gth_browser_activate_image_undo },
@@ -59,6 +61,7 @@ static const GActionEntry actions[] = {
{ "copy-image", gth_browser_activate_copy_image },
{ "paste-image", gth_browser_activate_paste_image },
{ "apply-icc-profile", toggle_action_activated, NULL, "true", gth_browser_activate_apply_icc_profile
},
+ { "image-zoom", gth_browser_activate_image_zoom, "s", "''", NULL },
};
@@ -96,6 +99,7 @@ struct _GthImageViewerPagePrivate {
guint update_quality_id;
guint update_visibility_id;
GtkWidget *buttons[N_HEADER_BAR_BUTTONS];
+ GtkBuilder *builder;
gboolean pointer_on_viewer;
gboolean pointer_on_overview;
guint hide_overview_id;
@@ -404,17 +408,93 @@ update_overview_visibility (GthImageViewerPage *self)
}
+#define MIN_ZOOM_LEVEL 0.3
+#define MAX_ZOOM_LEVEL 3.0
+
+
+static void
+zoom_scale_value_changed_cb (GtkScale *scale,
+ gdouble value,
+ gpointer user_data)
+{
+ GthImageViewerPage *self = user_data;
+ double x, zoom;
+
+ x = gtk_range_get_value (GTK_RANGE (scale));
+ zoom = MIN_ZOOM_LEVEL + (x / 100.0 * (MAX_ZOOM_LEVEL - MIN_ZOOM_LEVEL));
+ gth_image_viewer_set_zoom (GTH_IMAGE_VIEWER (self->priv->viewer), zoom);
+}
+
+
+static void
+zoom_popover_closed_cb (GtkPopover *popover,
+ gpointer user_data)
+{
+ call_when_idle ((DataFunc) gth_viewer_page_focus, user_data);
+}
+
+
+#define ZOOM_EQUAL(a,b) (fabs (a - b) < 1e-3)
+
+
static void
update_zoom_info (GthImageViewerPage *self)
{
double zoom;
char *text;
+ double x;
+
+ /* status bar */
zoom = gth_image_viewer_get_zoom (GTH_IMAGE_VIEWER (self->priv->viewer));
text = g_strdup_printf (" %d%% ", (int) (zoom * 100));
gth_statusbar_set_secondary_text (GTH_STATUSBAR (gth_browser_get_statusbar (self->priv->browser)),
text);
-
g_free (text);
+
+ /* zoom menu */
+
+ gboolean zoom_enabled;
+ GthFit fit_mode;
+ GAction *action;
+ const char *state;
+
+ zoom_enabled = gth_image_viewer_get_zoom_enabled (GTH_IMAGE_VIEWER (self->priv->viewer));
+ fit_mode = gth_image_viewer_get_fit_mode (GTH_IMAGE_VIEWER (self->priv->viewer));
+
+ gth_window_enable_action (GTH_WINDOW (self->priv->browser), "image-zoom", zoom_enabled);
+
+ state = "";
+ if (fit_mode == GTH_FIT_SIZE)
+ state = "fit";
+ else if (fit_mode == GTH_FIT_WIDTH)
+ state = "fit-width";
+ else if (fit_mode == GTH_FIT_HEIGHT)
+ state = "fit-height";
+ else if (fit_mode == GTH_FIT_SIZE_IF_LARGER)
+ state = "automatic";
+ else if (ZOOM_EQUAL (zoom, 0.5))
+ state = "50";
+ else if (ZOOM_EQUAL (zoom, 1.0))
+ state = "100";
+ else if (ZOOM_EQUAL (zoom, 2.0))
+ state = "200";
+ else if (ZOOM_EQUAL (zoom, 3.0))
+ state = "300";
+
+ action = g_action_map_lookup_action (G_ACTION_MAP (self->priv->browser), "image-zoom");
+ g_simple_action_set_state (G_SIMPLE_ACTION (action), g_variant_new_string (state));
+
+ gth_window_enable_action (GTH_WINDOW (self->priv->browser), "image-zoom-100", ! ZOOM_EQUAL (zoom,
1.0));
+ gth_window_enable_action (GTH_WINDOW (self->priv->browser), "image-zoom-fit-if-larger", fit_mode !=
GTH_FIT_SIZE_IF_LARGER);
+
+ /* zoom menu scale */
+
+ GtkWidget *scale = _gtk_builder_get_widget (self->priv->builder, "zoom_level_scale");
+
+ g_signal_handlers_block_by_data (scale, self);
+ x = (zoom - MIN_ZOOM_LEVEL) / (MAX_ZOOM_LEVEL - MIN_ZOOM_LEVEL) * 100.0;
+ gtk_range_set_value (GTK_RANGE (scale), CLAMP (x, 0, 100));
+ g_signal_handlers_unblock_by_data (scale, self);
}
@@ -422,7 +502,6 @@ static void
viewer_zoom_changed_cb (GtkWidget *widget,
GthImageViewerPage *self)
{
- gth_viewer_page_update_sensitivity (GTH_VIEWER_PAGE (self));
update_image_quality_if_required (self);
self->priv->pointer_on_viewer = TRUE;
update_overview_visibility (self);
@@ -820,6 +899,7 @@ gth_image_viewer_page_real_activate (GthViewerPage *base,
actions,
G_N_ELEMENTS (actions),
browser);
+
self->priv->buttons[0] =
gth_browser_add_header_bar_button (browser,
GTH_BROWSER_HEADER_SECTION_VIEWER_VIEW,
@@ -831,23 +911,26 @@ gth_image_viewer_page_real_activate (GthViewerPage *base,
gth_browser_add_header_bar_button (browser,
GTH_BROWSER_HEADER_SECTION_VIEWER_VIEW,
"view-zoom-fit-symbolic",
- _("Fit to window"),
- "win.image-zoom-fit",
- NULL);
- self->priv->buttons[2] =
- gth_browser_add_header_bar_button (browser,
- GTH_BROWSER_HEADER_SECTION_VIEWER_VIEW,
- "view-zoom-fit-width-symbolic",
- _("Fit to width"),
- "win.image-zoom-fit-width",
- NULL);
- self->priv->buttons[3] =
- gth_browser_add_header_bar_button (browser,
- GTH_BROWSER_HEADER_SECTION_VIEWER_VIEW,
- "view-zoom-fit-height-symbolic",
- _("Fit to height"),
- "win.image-zoom-fit-height",
+ _("Fit to window if larger"),
+ "win.image-zoom-fit-if-larger",
NULL);
+
+ self->priv->builder = _gtk_builder_new_from_file ("toolbar-zoom-menu.ui", "image_viewer");
+ self->priv->buttons[ZOOM_BUTTON] =
+ gth_browser_add_header_bar_menu_button (browser,
+ GTH_BROWSER_HEADER_SECTION_VIEWER_VIEW,
+ "view-zoom-in-symbolic",
+ NULL,
+ _gtk_builder_get_widget (self->priv->builder,
"zoom_popover"));
+ g_signal_connect (_gtk_builder_get_widget (self->priv->builder, "zoom_level_scale"),
+ "value-changed",
+ G_CALLBACK (zoom_scale_value_changed_cb),
+ self);
+ g_signal_connect (_gtk_builder_get_widget (self->priv->builder, "zoom_popover"),
+ "closed",
+ G_CALLBACK (zoom_popover_closed_cb),
+ self);
+
self->priv->buttons[APPLY_ICC_PROFILE_BUTTON] =
gth_browser_add_header_bar_toggle_button (browser,
GTH_BROWSER_HEADER_SECTION_VIEWER_OTHER_COMMANDS,
@@ -959,10 +1042,13 @@ gth_image_viewer_page_real_deactivate (GthViewerPage *base)
self = (GthImageViewerPage*) base;
for (i = 0; i < N_HEADER_BAR_BUTTONS; i++) {
- gtk_widget_destroy (self->priv->buttons[i]);
- self->priv->buttons[i] = NULL;
+ if (self->priv->buttons[i] != NULL) {
+ gtk_widget_destroy (self->priv->buttons[i]);
+ self->priv->buttons[i] = NULL;
+ }
}
+ _g_object_unref (self->priv->builder);
_g_object_unref (self->priv->preloader);
self->priv->preloader = NULL;
self->priv->active = FALSE;
@@ -1222,9 +1308,6 @@ static void
gth_image_viewer_page_real_update_sensitivity (GthViewerPage *base)
{
GthImageViewerPage *self;
- gboolean zoom_enabled;
- double zoom;
- GthFit fit_mode;
GthImage *image;
self = (GthImageViewerPage*) base;
@@ -1232,23 +1315,13 @@ gth_image_viewer_page_real_update_sensitivity (GthViewerPage *base)
gth_window_enable_action (GTH_WINDOW (self->priv->browser), "image-undo", gth_image_history_can_undo
(self->priv->history));
gth_window_enable_action (GTH_WINDOW (self->priv->browser), "image-redo", gth_image_history_can_redo
(self->priv->history));
- zoom_enabled = gth_image_viewer_get_zoom_enabled (GTH_IMAGE_VIEWER (self->priv->viewer));
- zoom = gth_image_viewer_get_zoom (GTH_IMAGE_VIEWER (self->priv->viewer));
-
- gth_window_enable_action (GTH_WINDOW (self->priv->browser), "image-zoom-100", zoom_enabled && !
FLOAT_EQUAL (zoom, 1.0));
- gth_window_enable_action (GTH_WINDOW (self->priv->browser), "image-zoom-out", zoom_enabled && (zoom >
0.05));
- gth_window_enable_action (GTH_WINDOW (self->priv->browser), "image-zoom-in", zoom_enabled && (zoom <
100.0));
-
- fit_mode = gth_image_viewer_get_fit_mode (GTH_IMAGE_VIEWER (self->priv->viewer));
- gth_window_enable_action (GTH_WINDOW (self->priv->browser), "image-zoom-fit", zoom_enabled &&
(fit_mode != GTH_FIT_SIZE));
- gth_window_enable_action (GTH_WINDOW (self->priv->browser), "image-zoom-fit-width", zoom_enabled &&
(fit_mode != GTH_FIT_WIDTH));
- gth_window_enable_action (GTH_WINDOW (self->priv->browser), "image-zoom-fit-height", zoom_enabled &&
(fit_mode != GTH_FIT_HEIGHT));
-
image = gth_image_viewer_get_image (GTH_IMAGE_VIEWER (self->priv->viewer));
gtk_widget_set_visible (self->priv->buttons[APPLY_ICC_PROFILE_BUTTON], (image != NULL) &&
(gth_image_get_icc_profile (image) != NULL));
gth_window_enable_action (GTH_WINDOW (self->priv->browser), "apply-icc-profile", (image != NULL) &&
(gth_image_get_icc_profile (image) != NULL));
_gth_image_viewer_page_update_paste_command_sensitivity (self, NULL);
+
+ update_zoom_info (self);
}
@@ -1676,6 +1749,7 @@ gth_image_viewer_page_init (GthImageViewerPage *self)
self->priv->update_visibility_id = 0;
for (i = 0; i < N_HEADER_BAR_BUTTONS; i++)
self->priv->buttons[i] = NULL;
+ self->priv->builder = NULL;
self->priv->pointer_on_overview = FALSE;
self->priv->pointer_on_viewer = FALSE;
self->priv->hide_overview_id = 0;
diff --git a/gthumb/gth-browser.c b/gthumb/gth-browser.c
index 3036c78..7327540 100644
--- a/gthumb/gth-browser.c
+++ b/gthumb/gth-browser.c
@@ -5273,7 +5273,7 @@ _gth_browser_setup_header_bar_button (GthBrowser *browser,
const char *tooltip,
const char *action_name,
const char *accelerator,
- GtkWidget *button)
+ GtkWidget *button)
{
if (action_name != NULL)
gtk_actionable_set_action_name (GTK_ACTIONABLE (button), action_name);
@@ -5347,6 +5347,25 @@ gth_browser_add_header_bar_label_button (GthBrowser *browser,
}
+GtkWidget *
+gth_browser_add_header_bar_menu_button (GthBrowser *browser,
+ GthBrowserHeaderSection section,
+ const char *icon_name,
+ const char *tooltip,
+ GtkWidget *popover)
+{
+ GtkWidget *button;
+
+ g_return_val_if_fail (icon_name != NULL, NULL);
+
+ button = _gtk_menu_button_new_for_header_bar (icon_name);
+ gtk_menu_button_set_popover (GTK_MENU_BUTTON (button), popover);
+ _gth_browser_setup_header_bar_button (browser, section, tooltip, NULL, NULL, button);
+
+ return button;
+}
+
+
void
gth_browser_add_menu_manager_for_menu (GthBrowser *browser,
const char *menu_id,
diff --git a/gthumb/gth-browser.h b/gthumb/gth-browser.h
index 7383d04..724bec0 100644
--- a/gthumb/gth-browser.h
+++ b/gthumb/gth-browser.h
@@ -173,6 +173,12 @@ GtkWidget * gth_browser_add_header_bar_label_button
const char *tooltip,
const char *action_name,
const char *accelerator);
+GtkWidget * gth_browser_add_header_bar_menu_button
+ (GthBrowser *browser,
+ GthBrowserHeaderSection section,
+ const char *icon_name,
+ const char *tooltip,
+ GtkWidget *popover);
void gth_browser_add_menu_manager_for_menu
(GthBrowser *browser,
const char *menu_id,
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