If window with button is hidden then release text image and vertexes.

This will reduce memory usage and not affect performance.

2 files changed, 23 insertions, 0 deletions

diff --git a/src/gui/widgets/button.cpp b/src/gui/widgets/button.cpp
index 446f4756f..e6f5b501d 100644
--- a/src/gui/widgets/button.cpp
+++ b/src/gui/widgets/button.cpp
@@ -367,6 +367,9 @@ void Button::init()
 
 Button::~Button()
 {
+    if (mWindow)
+        mWindow->removeWidgetListener(this);
+
     if (gui)
         gui->removeDragged(this);
 
@@ -679,6 +682,15 @@ void Button::widgetMoved(const Event &event A_UNUSED)
     mRedraw = true;
 }
 
+void Button::widgetHidden(const Event &event A_UNUSED)
+{
+    if (isBatchDrawRenders(openGLMode))
+        mVertexes2->clear();
+    mTextChunk.deleteImage();
+    mRedraw = true;
+    mTextChanged = true;
+}
+
 void Button::adjustSize()
 {
     const Font *const font = getFont();
@@ -774,3 +786,10 @@ void Button::mouseDragged(MouseEvent& event)
 {
     event.consume();
 }
+
+void Button::setParent(Widget *widget)
+{
+    if (mWindow)
+        mWindow->addWidgetListener(this);
+    Widget::setParent(widget);
+}
diff --git a/src/gui/widgets/button.h b/src/gui/widgets/button.h
index 153195454..d8c5e66b8 100644
--- a/src/gui/widgets/button.h
+++ b/src/gui/widgets/button.h
@@ -185,6 +185,8 @@ class Button final : public Widget,
 
         void widgetMoved(const Event &event) override final;
 
+        void widgetHidden(const Event &event) override final;
+
         void loadImage(const std::string &imageName);
 
         void loadImageSet(const std::string &imageName);
@@ -245,6 +247,8 @@ class Button final : public Widget,
 
         void mouseDragged(MouseEvent& event) override final;
 
+        void setParent(Widget *widget) override final;
+
         enum
         {
             BUTTON_STANDARD = 0,  // 0