From 746687800ff205b22316157c86c8b816307d3aa7 Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Sun, 20 May 2018 23:53:36 +0200
Subject: Improve performance and cpu usage

Remove Text vertices if text has not been visible on the freen for a
while.
Stop rendering when window has lost focus for awhile, reducing cpu usage
to 0
---
 src/Text.cpp | 21 +++++++++++++--------
 1 file changed, 13 insertions(+), 8 deletions(-)

(limited to 'src/Text.cpp')

diff --git a/src/Text.cpp b/src/Text.cpp
index 2292a4e..025cb92 100644
--- a/src/Text.cpp
+++ b/src/Text.cpp
@@ -31,6 +31,7 @@ namespace dchat
         dirtyCaret(false),
         plainText(false),
         editable(false),
+        visible(true),
         caretMoveDirection(CaretMoveDirection::NONE),
         caretIndex(0)
     {
@@ -49,6 +50,7 @@ namespace dchat
         dirtyCaret(false),
         plainText(_plainText),
         editable(false),
+        visible(true),
         caretMoveDirection(CaretMoveDirection::NONE),
         lineSpacing(0.0f),
         caretIndex(0)
@@ -906,21 +908,24 @@ namespace dchat
         //sf::FloatRect textRect(pos.x, pos.y, maxWidth, )
         //colRect.contains()
         //if(pos.x + maxWidth <= 0.0f || pos.x >= maxWidth || pos.y + totalHeight <= 0.0f || pos.y >= target.getSize().y) return;
-        if(pos.y + getHeight() <= 0.0f || pos.y >= target.getSize().y) return false;
-        /*
-        if(editable)
+        if(pos.y + getHeight() <= 0.0f || pos.y >= target.getSize().y)
         {
-            sf::RectangleShape editBox(sf::Vector2f(std::max(maxWidth, boundingBox.width), boundingBox.height));
-            editBox.setPosition(pos.x, pos.y - floor(vspace));
-            editBox.setFillColor(ColorScheme::getBackgroundColor() + sf::Color(10, 10, 10));
-            target.draw(editBox);
+            if(!editable && visible && lastSeenTimer.getElapsedTime().asMilliseconds() > 3000)
+            {
+                visible = false;
+                vertices.resize(0);
+            }
+            return false;
         }
-        */
         
+        if(!visible)
+            updateGeometry();
         
         states.transform.translate(pos);
         states.texture = &font->getTexture(characterSize);
         target.draw(vertices, states);
+        lastSeenTimer.restart();
+        visible = true;
         
         pos.y -= floor(vspace);
         for(TextElement &textElement : textElements)
-- 
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