Implemented a possibility to set a custom toolbars icon size (related to #2247 and same others)

src/slic3r/GUI/Preferences.cpp

@@ -18,8 +18,13 @@ void PreferencesDialog::build()
 	auto app_config = get_app_config();
 	m_optgroup = std::make_shared<ConfigOptionsGroup>(this, _(L("General")));
     m_optgroup->label_width = 40;
-	m_optgroup->m_on_change = [this](t_config_option_key opt_key, boost::any value){
+	m_optgroup->m_on_change = [this](t_config_option_key opt_key, boost::any value) {
 		m_values[opt_key] = boost::any_cast<bool>(value) ? "1" : "0";
+
+        if (opt_key == "use_custom_toolbar_size") {
+            m_icon_size_sizer->ShowItems(boost::any_cast<bool>(value));
+            this->layout();
+        }
 	};
 
 	// TODO
@@ -109,6 +114,16 @@ void PreferencesDialog::build()
 	m_optgroup->append_single_option_line(option);
 #endif
 
+	def.label = L("Use custom size for toolbar icons");
+	def.type = coBool;
+	def.tooltip = L("If enabled, you can change size of toolbar icons manually.");
+	def.set_default_value(new ConfigOptionBool{ app_config->get("use_custom_toolbar_size") == "1" });
+	option = Option (def,"use_custom_toolbar_size");
+    m_optgroup->append_single_option_line(option);
+
+    create_icon_size_slider();
+    m_icon_size_sizer->ShowItems(app_config->get("use_custom_toolbar_size") == "1");
+
 	auto sizer = new wxBoxSizer(wxVERTICAL);
 	sizer->Add(m_optgroup->sizer, 0, wxEXPAND | wxBOTTOM | wxLEFT | wxRIGHT, 10);
 
@@ -145,17 +160,58 @@ void PreferencesDialog::on_dpi_changed(const wxRect &suggested_rect)
 {
     m_optgroup->msw_rescale();
 
+    msw_buttons_rescale(this, em_unit(), { wxID_OK, wxID_CANCEL });
+
+    layout();
+}
+
+void PreferencesDialog::layout()
+{
     const int em = em_unit();
 
-    msw_buttons_rescale(this, em, { wxID_OK, wxID_CANCEL });
-
-    const wxSize& size = wxSize(47 * em, 28 * em);
-
-    SetMinSize(size);
+    SetMinSize(wxSize(47 * em, 28 * em));
     Fit();
 
     Refresh();
 }
 
+void PreferencesDialog::create_icon_size_slider()
+{
+    const auto app_config = get_app_config();
+
+    const int em = em_unit();
+
+    m_icon_size_sizer = new wxBoxSizer(wxHORIZONTAL);
+
+    auto label = new wxStaticText(this, wxID_ANY, _(L("Icon size in a respect to the default size")) + " (%) :");
+    label->SetFont(wxGetApp().normal_font());
+    label->SetBackgroundStyle(wxBG_STYLE_PAINT);
+
+    m_icon_size_sizer->Add(label, 0, wxALIGN_CENTER_VERTICAL| wxRIGHT | wxLEFT, em);
+
+    const int def_val = atoi(app_config->get("custom_toolbar_size").c_str());
+
+    auto slider = new wxSlider(this, wxID_ANY, def_val, 25, 100, wxDefaultPosition, wxDefaultSize, 
+                               wxSL_LABELS | wxSL_AUTOTICKS);
+
+    slider->SetFont(wxGetApp().normal_font());
+    slider->SetBackgroundStyle(wxBG_STYLE_PAINT);
+
+    slider->SetTickFreq(25);
+    slider->SetPageSize(25);
+
+    slider->SetToolTip(_(L("Select toolbar icon size in respect to the default one.")));
+
+    slider->Bind(wxEVT_SLIDER, ([this, slider](wxCommandEvent e) {
+        auto val = slider->GetValue();
+        m_values["custom_toolbar_size"] = (boost::format("%d") % val).str();
+            return;
+    }), slider->GetId());
+
+    m_icon_size_sizer->Add(slider, 1, wxEXPAND);
+
+    m_optgroup->sizer->Add(m_icon_size_sizer, 0, wxEXPAND | wxALL, em);
+}
+
 } // GUI
 } // Slic3r