Convert bauhaus to use GtkGestures

src/develop/blend_gui.c

@@ -2766,7 +2766,6 @@ void dt_iop_gui_init_masks(GtkWidget *blendw, dt_iop_module_t *module)
 
     bd->masks_combo = dt_bauhaus_combobox_new(module);
     dt_bauhaus_widget_set_label(bd->masks_combo, N_("blend"), N_("drawn mask"));
-    dt_bauhaus_widget_set_section(bd->masks_combo, TRUE);
 
     dt_bauhaus_combobox_add(bd->masks_combo, _("no mask used"));
     g_signal_connect(G_OBJECT(bd->masks_combo), "value-changed",

src/develop/develop.c

@@ -2957,10 +2957,10 @@ float dt_dev_exposure_get_black(dt_develop_t *dev)
   return instance && instance->get_black  && instance->module->enabled ? instance->get_black(instance->module) : 0.0f;
 }
 
-void dt_dev_exposure_handle_event(GdkEvent *event, const gboolean blackwhite)
+void dt_dev_exposure_handle_event(gpointer controller, int n_press, gdouble x, const gboolean blackwhite)
 {
   if(darktable.develop->proxy.exposure.handle_event)
-    darktable.develop->proxy.exposure.handle_event(event, blackwhite);
+    darktable.develop->proxy.exposure.handle_event(controller, n_press, x, blackwhite);
 }
 
 void dt_dev_modulegroups_set(dt_develop_t *dev,

src/develop/develop.h

@@ -102,7 +102,7 @@ typedef struct dt_dev_proxy_exposure_t
   struct dt_iop_module_t *module;
   float (*get_exposure)(struct dt_iop_module_t *exp);
   float (*get_black)(struct dt_iop_module_t *exp);
-  void (*handle_event)(GdkEvent *event, gboolean blackwhite);
+  void (*handle_event)(gpointer, int, gdouble, const gboolean);
 } dt_dev_proxy_exposure_t;
 
 struct dt_dev_pixelpipe_t;
@@ -471,7 +471,7 @@ float dt_dev_exposure_get_exposure(dt_develop_t *dev);
 /** get exposure black level */
 float dt_dev_exposure_get_black(dt_develop_t *dev);
 
-void dt_dev_exposure_handle_event(GdkEvent *event, gboolean blackwhite);
+void dt_dev_exposure_handle_event(gpointer controller, int n_press, gdouble x, const gboolean blackwhite);
 
 /*
  * modulegroups plugin hooks

src/gui/accelerators.c

@@ -919,7 +919,7 @@ static gchar *_shortcut_lua_command(GtkWidget *widget,
 
   if(DT_IS_BAUHAUS_WIDGET(widget) && s->element == DT_ACTION_ELEMENT_DEFAULT)
   {
-    if(DT_BAUHAUS_WIDGET(widget)->type == DT_BAUHAUS_COMBOBOX)
+    if(dt_bauhaus_widget_get_type(widget) == DT_BAUHAUS_COMBOBOX)
     {
       int value = GPOINTER_TO_INT(dt_bauhaus_combobox_get_data(widget));
       dt_introspection_type_enum_tuple_t *values
@@ -1034,8 +1034,7 @@ gboolean dt_shortcut_tooltip_callback(GtkWidget *widget,
   int show_element = 0;
   dt_shortcut_t lua_shortcut = { .speed = 1.0 };
 
-  gchar *original_markup =
-    dt_bauhaus_widget_get_tooltip_markup(widget, darktable.control->element);
+  gchar *original_markup = dt_bauhaus_widget_get_tooltip_markup(widget, x, y);
   const gchar *widget_name = gtk_widget_get_name(widget);
 
   if(!strcmp(widget_name, "actions_view") || !strcmp(widget_name, "shortcuts_view"))
@@ -1129,23 +1128,6 @@ gboolean dt_shortcut_tooltip_callback(GtkWidget *widget,
                                             _("scroll to change default speed"),
                                             _("right-click to exit mapping mode"));
     }
-    else if(DT_IS_BAUHAUS_WIDGET(widget)
-            && DT_BAUHAUS_WIDGET(widget)->type == DT_BAUHAUS_SLIDER
-            && darktable.control->element == 2) // DT_ACTION_ELEMENT_FORCE
-    {
-      float hard_min = dt_bauhaus_slider_get_hard_min(widget);
-      float hard_max = dt_bauhaus_slider_get_hard_max(widget);
-      if(dt_bauhaus_slider_get_soft_min(widget) != hard_min ||
-         dt_bauhaus_slider_get_soft_max(widget) != hard_max)
-      {
-        dt_util_str_cat(&original_markup,
-           _("%sright-click to type a specific value between <b>%s</b> and <b>%s</b>"
-             "\nor hold ctrl+shift while dragging to ignore soft limits."),
-           original_markup ? "\n\n" : "",
-           dt_bauhaus_slider_get_text(widget, hard_min),
-           dt_bauhaus_slider_get_text(widget, hard_max));
-      }
-    }
   }
 
   if(!def) def = _action_find_definition(action);

src/gui/gtk.c

@@ -3595,28 +3595,26 @@ static void _notebook_size_callback(GtkNotebook *notebook,
 // GTK_STATE_FLAG_PRELIGHT does not seem to get set on the label on
 // hover so state-flags-changed cannot update
 // darktable.control->element for shortcut mapping
-static gboolean _notebook_motion_notify_callback(GtkWidget *widget,
-                                                 const GdkEventMotion *event,
-                                                 gpointer user_data)
+static void _notebook_motion_notify_callback(GtkEventControllerMotion *controller,
+                                             double x,
+                                             double y,
+                                             GtkNotebook *notebook)
 {
   GtkAllocation notebook_alloc, label_alloc;
-  gtk_widget_get_allocation(widget, &notebook_alloc);
+  gtk_widget_get_allocation(GTK_WIDGET(notebook), &notebook_alloc);
 
-  GtkNotebook *notebook = GTK_NOTEBOOK(widget);
   const int n = gtk_notebook_get_n_pages(notebook);
   for(int i = 0; i < n; i++)
   {
     gtk_widget_get_allocation(gtk_notebook_get_tab_label
                               (notebook, gtk_notebook_get_nth_page(notebook, i)),
                               &label_alloc);
-    if(event->x + notebook_alloc.x < label_alloc.x + label_alloc.width)
+    if(x + notebook_alloc.x < label_alloc.x + label_alloc.width)
     {
       darktable.control->element = i;
       break;
     }
   }
-
-  return FALSE;
 }
 
 static float _action_process_tabs(const gpointer target,
@@ -3739,7 +3737,7 @@ static gboolean _notebook_button_press_callback(GtkNotebook *notebook,
                                                 const GdkEventButton *event,
                                                 gpointer user_data)
 {
-  if(event->type == GDK_2BUTTON_PRESS)
+  if(event->type == GDK_2BUTTON_PRESS && gtk_get_event_widget((GdkEvent*)event) == GTK_WIDGET(notebook))
     _reset_all_bauhaus(notebook, gtk_notebook_get_nth_page(notebook, gtk_notebook_get_current_page(notebook)));
 
   return FALSE;
@@ -3770,8 +3768,7 @@ GtkWidget *dt_ui_notebook_page(GtkNotebook *notebook,
   {
     g_signal_connect(G_OBJECT(notebook), "size-allocate",
                      G_CALLBACK(_notebook_size_callback), NULL);
-    g_signal_connect(G_OBJECT(notebook), "motion-notify-event",
-                     G_CALLBACK(_notebook_motion_notify_callback), NULL);
+    dt_gui_connect_motion(notebook, _notebook_motion_notify_callback, NULL, NULL, notebook);
     g_signal_connect(G_OBJECT(notebook), "scroll-event",
                      G_CALLBACK(_notebook_scroll_callback), NULL);
     g_signal_connect(G_OBJECT(notebook), "button-press-event",
@@ -4396,6 +4393,43 @@ gboolean dt_gui_long_click(const guint second,
   return second - delay > first;
 }
 
+GtkGestureSingle *(dt_gui_connect_click)(GtkWidget *widget,
+                                         GCallback pressed,
+                                         GCallback released,
+                                         gpointer data)
+{
+  GtkGesture *gesture = gtk_gesture_multi_press_new(widget);
+  g_object_weak_ref(G_OBJECT (widget), (GWeakNotify) g_object_unref, gesture);
+  // GTK4 GtkGesture *gesture = gtk_gesture_click_new();
+  //      gtk_widget_add_controller(widget, GTK_EVENT_CONTROLLER(gesture));
+
+  if(pressed) g_signal_connect(gesture, "pressed", pressed, data);
+  if(released) g_signal_connect(gesture, "released", released, data);
+
+  return (GtkGestureSingle *)gesture;
+}
+
+GtkEventController *(dt_gui_connect_motion)(GtkWidget *widget,
+                                            GCallback motion,
+                                            GCallback enter,
+                                            GCallback leave,
+                                            gpointer data)
+{
+  GtkEventController *controller = gtk_event_controller_motion_new(widget);
+  gtk_event_controller_set_propagation_phase(controller, GTK_PHASE_TARGET);
+  g_object_weak_ref(G_OBJECT (widget), (GWeakNotify) g_object_unref, controller);
+  // GTK4 gtk_widget_add_controller(widget, GTK_EVENT_CONTROLLER(controller));
+
+  gtk_widget_add_events(widget, GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK); // still needed for now by _main_do_event_keymap
+
+  if(motion) g_signal_connect(controller, "motion", motion, data);
+  if(enter) g_signal_connect(controller, "enter", enter, data);
+  if(leave) g_signal_connect(controller, "leave", leave, data);
+
+  return controller;
+}
+
+
 static int busy_nest_count = 0;
 static GdkCursor* busy_prev_cursor = NULL;
 
@@ -4498,7 +4532,7 @@ GtkWidget *(dt_gui_box_add)(const char *file, const int line, const char *functi
     else if(gtk_widget_get_parent(*list))
       dt_print(DT_DEBUG_ALWAYS, "%s:%d %s: trying to add widget that already has a parent to box (#%d)", file, line, function, i);
     else
-      gtk_container_add(GTK_CONTAINER(box), GTK_WIDGET(*list));
+      gtk_container_add(GTK_CONTAINER(box), GTK_WIDGET(*list)); // GTK4 gtk_box_append
   }
 
   return GTK_WIDGET(box);

src/gui/gtk.h

@@ -533,6 +533,37 @@ void dt_gui_hide_collapsible_section(const dt_gui_collapsible_section_t *cs);
 gboolean dt_gui_long_click(const guint second,
                            const guint first);
 
+#define ASSERT_FUNC_TYPE(func, expected_type) (void)(1 ? (func) : (expected_type)0)
+
+GtkGestureSingle *(dt_gui_connect_click)(GtkWidget *widget,
+                                         GCallback pressed,
+                                         GCallback released,
+                                         gpointer data);
+#define dt_gui_connect_click(widget, pressed, released, data) ( \
+  ASSERT_FUNC_TYPE(pressed, void(*)(GtkGestureSingle *, int, double, double, __typeof__(data))), \
+  ASSERT_FUNC_TYPE(released, void(*)(GtkGestureSingle *, int, double, double, __typeof__(data))), \
+  dt_gui_connect_click(GTK_WIDGET(widget), G_CALLBACK(pressed), G_CALLBACK(released), (data)))
+#define dt_gui_connect_click_all(widget, pressed, released, data) \
+  gtk_gesture_single_set_button(dt_gui_connect_click(widget, pressed, released, data), 0)
+
+#define dt_gui_claim(gesture) \
+      gtk_gesture_set_state(GTK_GESTURE(gesture), GTK_EVENT_SEQUENCE_CLAIMED)
+
+GtkEventController *(dt_gui_connect_motion)(GtkWidget *widget,
+                                            GCallback motion,
+                                            GCallback enter,
+                                            GCallback leave,
+                                            gpointer data);
+#define dt_gui_connect_motion(widget, motion, enter, leave, data) ( \
+  ASSERT_FUNC_TYPE(motion, void(*)(GtkEventControllerMotion *, double, double, __typeof__(data))), \
+  ASSERT_FUNC_TYPE(enter, void(*)(GtkEventControllerMotion *, double, double, __typeof__(data))), \
+  ASSERT_FUNC_TYPE(leave, void(*)(GtkEventControllerMotion *, __typeof__(data))), \
+  dt_gui_connect_motion(GTK_WIDGET(widget), G_CALLBACK(motion), G_CALLBACK(enter), G_CALLBACK(leave), (data)))
+
+// GTK4 gtk_event_controller_get_current_event_state(GTK_EVENT_CONTROLLER(controller));
+#define dt_modifier_eq(controller, mask)\
+  dt_modifier_is(dt_key_modifier_state(), mask)
+
 // control whether the mouse pointer displays as a "busy" cursor, e.g. watch or timer
 // the calls may be nested, but must be matched
 void dt_gui_cursor_set_busy();

src/iop/exposure.c

@@ -814,25 +814,37 @@ static float _exposure_proxy_get_black(dt_iop_module_t *self)
 }
 
 
-static void _exposure_proxy_handle_event(GdkEvent *event, const gboolean blackwhite)
+static void _exposure_proxy_handle_event(gpointer controller,
+                                         int n_press,
+                                         double x,
+                                         const gboolean blackwhite)
 {
   dt_iop_module_t *self = darktable.develop->proxy.exposure.module;
   if(self && self->gui_data)
   {
     static gboolean black = FALSE;
-    if(event->type == GDK_BUTTON_PRESS || event->type == GDK_SCROLL)
+    if((n_press > 0 && GTK_IS_GESTURE_SINGLE(controller)) // button press
+       || !n_press) // scroll event
       black = blackwhite;
 
     if(black)
-      event->button.x *= -1;
+      x *= -1;
 
     const dt_iop_exposure_params_t *p = self->params;
     dt_iop_exposure_gui_data_t *g = self->gui_data;
     GtkWidget *widget = black ? g->black :
                         p->mode == EXPOSURE_MODE_DEFLICKER
-                        ? g->deflicker_target_level : g->exposure;
-    gtk_widget_realize(widget);
-    gtk_widget_event(widget, event);
+                      ? g->deflicker_target_level : g->exposure;
+    if(!n_press)
+      darktable.bauhaus->scroll(widget, controller);
+    else
+      if(GTK_IS_GESTURE_SINGLE(controller))
+        if(n_press > 0)
+          darktable.bauhaus->press(controller, n_press, x, 0, widget);
+        else
+          darktable.bauhaus->release(controller, -n_press, x, 0, widget);
+      else
+        darktable.bauhaus->motion(controller, x, 0, widget);
 
     gchar *text = dt_bauhaus_slider_get_text(widget, dt_bauhaus_slider_get(widget));
     dt_action_widget_toast(DT_ACTION(self), widget, "%s", text);

src/libs/filtering.c

@@ -1246,7 +1246,7 @@ static gboolean _widget_init(dt_lib_filtering_rule_t *rule, const dt_collection_
 
     // operator type
     rule->w_operator = dt_bauhaus_combobox_new(NULL);
-    DT_BAUHAUS_WIDGET(rule->w_operator)->show_quad = FALSE;
+    dt_bauhaus_widget_set_quad_visibility(rule->w_operator, FALSE);
     dt_bauhaus_combobox_add_aligned(rule->w_operator, _("and"), DT_BAUHAUS_COMBOBOX_ALIGN_LEFT);
     dt_bauhaus_combobox_add_aligned(rule->w_operator, _("or"), DT_BAUHAUS_COMBOBOX_ALIGN_LEFT);
     dt_bauhaus_combobox_add_aligned(rule->w_operator, _("and not"), DT_BAUHAUS_COMBOBOX_ALIGN_LEFT);
@@ -1264,7 +1264,7 @@ static gboolean _widget_init(dt_lib_filtering_rule_t *rule, const dt_collection_
   {
     rule->w_prop = dt_bauhaus_combobox_new(NULL);
     dt_bauhaus_combobox_set_selected_text_align(rule->w_prop, DT_BAUHAUS_COMBOBOX_ALIGN_MIDDLE);
-    DT_BAUHAUS_WIDGET(rule->w_prop)->show_quad = FALSE;
+    dt_bauhaus_widget_set_quad_visibility(rule->w_prop, FALSE);
     _rule_populate_prop_combo(rule);
     g_object_set_data(G_OBJECT(rule->w_prop), "rule", rule);
     dt_bauhaus_combobox_set_from_value(rule->w_prop, prop);