ENH: page faults when device page idle

jira: [none]
Change-Id: I4dc95ae6332b81e571fb5ef09c75dcf01e77170e
(cherry picked from commit cefe973772c7f7045713470d61cc85221574d9c5)

src/slic3r/GUI/Widgets/Button.cpp

@@ -63,9 +63,11 @@ bool Button::Create(wxWindow* parent, wxString text, wxString icon, long style,
 
 void Button::SetLabel(const wxString& label)
 {
-    wxWindow::SetLabel(label);
-    messureSize();
-    Refresh();
+    if (label != wxWindow::GetLabel()) {
+        wxWindow::SetLabel(label);
+        messureSize();
+        Refresh();
+    }
 }
 
 bool Button::SetFont(const wxFont& font)

src/slic3r/GUI/Widgets/CheckBox.cpp

@@ -31,8 +31,10 @@ CheckBox::CheckBox(wxWindow *parent, int id)
 
 void CheckBox::SetValue(bool value)
 {
-	wxBitmapToggleButton::SetValue(value);
-	update();
+    if (wxBitmapToggleButton::GetValue() != value) {
+        wxBitmapToggleButton::SetValue(value);
+        update();
+    }
 }
 
 void CheckBox::SetHalfChecked(bool value)

src/slic3r/GUI/Widgets/StateColor.hpp

@@ -51,6 +51,16 @@ public:
     // single color
     StateColor(unsigned long color);
 
+    // operator==
+    bool operator==(StateColor const& other) const{
+        return statesList_ == other.statesList_ && colors_ == other.colors_ && takeFocusedAsHovered_ == other.takeFocusedAsHovered_;
+    };
+
+    // operator!=
+    bool operator!=(StateColor const& other) const{
+        return !(*this == other);
+    };
+
 public:
     void append(wxColour const & color, int states);
 

src/slic3r/GUI/Widgets/StaticBox.cpp

@@ -66,9 +66,11 @@ void StaticBox::SetBorderWidth(int width)
 
 void StaticBox::SetBorderColor(StateColor const &color)
 {
-    border_color = color;
-    state_handler.update_binds();
-    Refresh();
+    if (border_color != color) {
+        border_color = color;
+        state_handler.update_binds();
+        Refresh();
+    }
 }
 
 void StaticBox::SetBorderColorNormal(wxColor const &color)
@@ -118,11 +120,13 @@ wxColor StaticBox::GetParentBackgroundColor(wxWindow* parent)
 
 void StaticBox::ShowBadge(bool show)
 {
-    if (show)
+    if (show && badge.name() != "badge") {
         badge = ScalableBitmap(this, "badge", 18);
-    else
+        Refresh();
+    } else if (!show && !badge.name().empty()) {
         badge = ScalableBitmap {};
-    Refresh();
+        Refresh();
+    }
 }
 
 void StaticBox::eraseEvent(wxEraseEvent& evt)

src/slic3r/GUI/Widgets/StaticGroup.cpp

@@ -9,11 +9,13 @@ StaticGroup::StaticGroup(wxWindow *parent, wxWindowID id, const wxString &label)
 
 void StaticGroup::ShowBadge(bool show)
 {
-    if (show)
+    if (show && badge.name() != "badge") {
         badge = ScalableBitmap(this, "badge", 18);
-    else
+        Refresh();
+    } else if (!show && !badge.name().empty()) {
         badge = ScalableBitmap{};
-    Refresh();
+        Refresh();
+    }
 }
 
 void StaticGroup::DrawBorderAndLabel(wxDC& dc)

src/slic3r/GUI/Widgets/StepCtrl.cpp

@@ -51,9 +51,11 @@ void StepCtrlBase::SelectItem(int item)
 
 void StepCtrlBase::Idle()
 {
-    step = -1;
-    sendStepCtrlEvent();
-    Refresh();
+    if (step != -1) {
+        step = -1;
+        sendStepCtrlEvent();
+        Refresh();
+    }
 }
 
 bool StepCtrlBase::SetTipFont(wxFont const& font)

src/slic3r/GUI/Widgets/SwitchButton.cpp

@@ -62,9 +62,10 @@ void SwitchButton::SetThumbColor(StateColor const& color)
 
 void SwitchButton::SetValue(bool value)
 {
-	if (value != GetValue())
-		wxBitmapToggleButton::SetValue(value);
-	update();
+    if (value != GetValue()) {
+        wxBitmapToggleButton::SetValue(value);
+        update();
+    }
 }
 
 bool SwitchButton::SetBackgroundColour(const wxColour& colour)
@@ -212,17 +213,30 @@ SwitchBoard::SwitchBoard(wxWindow *parent, wxString leftL, wxString right, wxSiz
 void SwitchBoard::updateState(wxString target)
 {
     if (target.empty()) {
+        if (!switch_left && !switch_right) {
+            return;
+        }
+
         switch_left = false;
         switch_right = false;
     } else {
         if (target == "left") {
+            if (switch_left && !switch_right) {
+                return;
+            }
+
             switch_left = true;
             switch_right = false;
         } else if (target == "right") {
+            if (!switch_left && switch_right) {
+                return;
+            }
+
             switch_left  = false;
             switch_right = true;
         }
     }
+
     Refresh();
 }