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
---
 include/Text.hpp |  3 +++
 src/Text.cpp     | 21 +++++++++++++--------
 src/main.cpp     | 18 +++++++++++++++---
 3 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/include/Text.hpp b/include/Text.hpp
index 925dc94..286a0b1 100644
--- a/include/Text.hpp
+++ b/include/Text.hpp
@@ -7,6 +7,7 @@
 #include <SFML/Graphics/RenderTarget.hpp>
 #include <SFML/Window/Event.hpp>
 #include <SFML/System/String.hpp>
+#include <SFML/System/Clock.hpp>
 #include <vector>
 
 namespace dchat
@@ -98,6 +99,7 @@ namespace dchat
         bool dirtyCaret;
         bool plainText;
         bool editable;
+        bool visible;
         CaretMoveDirection caretMoveDirection;
         sf::FloatRect boundingBox;
         float lineSpacing;
@@ -105,5 +107,6 @@ namespace dchat
         
         int caretIndex;
         sf::Vector2f caretPosition;
+        sf::Clock lastSeenTimer;
     };
 }
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)
diff --git a/src/main.cpp b/src/main.cpp
index 4440315..cf916e2 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -117,11 +117,11 @@ int main(int argc, char **argv)
     boost::filesystem::current_path(parentPath); // Ensures loading of resources works no matter which path we run this executable from
     */
     
-    const int FRAMERATE_FOCUSED = 200;
-    const int FRAMERATE_NOT_FOCUSED = 30;
+    const sf::Int64 FRAMERATE_FOCUSED = 144;
+    const sf::Int64 FRAMERATE_NOT_FOCUSED = 10;
     
     XInitThreads();
-    sf::RenderWindow window(sf::VideoMode(1920, 1080), "dchat");
+    sf::RenderWindow window(sf::VideoMode(1280, 768), "dchat");
     window.setVerticalSyncEnabled(false);
     window.setFramerateLimit(FRAMERATE_FOCUSED);
     
@@ -659,8 +659,12 @@ int main(int argc, char **argv)
         Channel::getCurrent()->addLocalMessage(msg, Channel::getCurrent()->getSystemUser());
     });
     
+    sf::Clock lastFocusedTimer;
+    sf::Clock frameTimer;
+    
     while (window.isOpen())
     {
+        frameTimer.restart();
         Channel *currentChannel =  Channel::getCurrent();
         
         sf::Event event;
@@ -702,8 +706,16 @@ int main(int argc, char **argv)
                 GlobalContextMenu::processEvent(event);
                 currentChannel->processEvent(event, cache);
             }
+            
+            lastFocusedTimer.restart();
         }
 
+        if(lastFocusedTimer.getElapsedTime().asMilliseconds() > 3000)
+        {
+            this_thread::sleep_for(chrono::seconds(1));
+            continue;
+        }
+        
         window.clear(ColorScheme::getBackgroundColor());
         ChannelSidePanel::draw(window);
         currentChannel->draw(window, cache);
-- 
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