added graphics cache for drawn messages

messages/limitedqueue.h

@@ -15,7 +15,7 @@ template <typename T>
 class LimitedQueue
 {
 public:
-    LimitedQueue(int limit = 10, int buffer = 5)
+    LimitedQueue(int limit = 100, int buffer = 25)
         : vector(new std::vector<T>(limit + buffer))
         , vectorPtr(this->vector)
         , mutex()

messages/limitedqueuesnapshot.h

@@ -29,8 +29,8 @@ public:
 
     T const &operator[](int index) const
     {
-        assert(index >= 0);
+        //        assert(index >= 0);
-        assert(index < length);
+        //        assert(index < length);
 
         return vector->at(index + offset);
     }

messages/messageref.cpp

@@ -2,6 +2,8 @@
 #include "emotes.h"
 #include "settings.h"
 
+#include <QDebug>
+
 #define MARGIN_LEFT 8
 #define MARGIN_RIGHT 8
 #define MARGIN_TOP 8
@@ -14,6 +16,7 @@ MessageRef::MessageRef(std::shared_ptr<Message> message)
     : message(message.get())
     , messagePtr(message)
     , wordParts()
+    , buffer()
 {
 }
 
@@ -22,14 +25,16 @@ MessageRef::layout(int width, bool enableEmoteMargins)
 {
     auto &settings = Settings::getInstance();
 
-    width = width - (width % 2);
+    bool sizeChanged = width != this->currentLayoutWidth;
-
+    bool redraw = width != this->currentLayoutWidth;
-    int mediumTextLineHeight = Fonts::getFontMetrics(Fonts::Medium).height();
     int spaceWidth = 4;
 
-    bool redraw = width != this->currentLayoutWidth || this->relayoutRequested;
+    {
+        int mediumTextLineHeight =
+            Fonts::getFontMetrics(Fonts::Medium).height();
 
-    bool recalculateImages = this->emoteGeneration != Emotes::getGeneration();
+        bool recalculateImages =
+            this->emoteGeneration != Emotes::getGeneration();
         bool recalculateText = this->fontGeneration != Fonts::getGeneration();
 
         qreal emoteScale = settings.emoteScale.get();
@@ -50,7 +55,8 @@ MessageRef::layout(int width, bool enableEmoteMargins)
                         qreal h = image.getHeight();
 
                         if (scaleEmotesByLineHeight) {
-                        word.setSize(w * mediumTextLineHeight / h * emoteScale,
+                            word.setSize(
+                                w * mediumTextLineHeight / h * emoteScale,
                                 mediumTextLineHeight * emoteScale);
                         } else {
                             word.setSize(w * image.getScale() * emoteScale,
@@ -66,11 +72,14 @@ MessageRef::layout(int width, bool enableEmoteMargins)
                 }
             }
         }
+    }
 
     if (!redraw) {
         return false;
     }
 
+    this->currentLayoutWidth = width;
+
     int x = MARGIN_LEFT;
     int y = MARGIN_TOP;
 
@@ -184,7 +193,16 @@ MessageRef::layout(int width, bool enableEmoteMargins)
 
     this->alignWordParts(lineStart, lineHeight);
 
+    if (this->height != y + lineHeight) {
+        sizeChanged = true;
         this->height = y + lineHeight;
+    }
+
+    if (sizeChanged) {
+        this->buffer = nullptr;
+    }
+
+    this->updateBuffer = true;
 
     return true;
 }

messages/messageref.h

@@ -1,9 +1,11 @@
 #ifndef MESSAGEREF_H
 #define MESSAGEREF_H
 
-#include <memory>
 #include "messages/message.h"
 
+#include <QPixmap>
+#include <memory>
+
 namespace chatterino {
 namespace messages {
 
@@ -26,18 +28,15 @@ public:
 
     bool layout(int width, bool enableEmoteMargins = true);
 
-    void
-    requestRelayout()
-    {
-        relayoutRequested = true;
-    }
-
     const std::vector<WordPart> &
     getWordParts() const
     {
         return wordParts;
     }
 
+    std::shared_ptr<QPixmap> buffer = nullptr;
+    bool updateBuffer = false;
+
 private:
     Message *message;
     std::shared_ptr<Message> messagePtr;
@@ -47,7 +46,6 @@ private:
     int height = 0;
 
     int currentLayoutWidth = -1;
-    bool relayoutRequested = true;
     int fontGeneration = -1;
     int emoteGeneration = -1;
 

widgets/chatwidgetheader.cpp

@@ -46,6 +46,7 @@ ChatWidgetHeader::ChatWidgetHeader(ChatWidget *parent)
     this->leftMenu.addAction("Close split", this, SLOT(menuCloseSplit()),
                              QKeySequence(tr("Ctrl+W")));
     this->leftMenu.addAction("Move split", this, SLOT(menuMoveSplit()));
+    this->leftMenu.addAction("Popup", this, SLOT(menuPopup()));
     this->leftMenu.addSeparator();
     this->leftMenu.addAction("Change channel", this, SLOT(menuChangeChannel()),
                              QKeySequence(tr("Ctrl+R")));
@@ -182,6 +183,13 @@ ChatWidgetHeader::menuMoveSplit()
 {
 }
 void
+ChatWidgetHeader::menuPopup()
+{
+    auto widget = new ChatWidget();
+    widget->setChannelName(this->chatWidget->getChannelName());
+    widget->show();
+}
+void
 ChatWidgetHeader::menuChangeChannel()
 {
     this->chatWidget->showChangeChannelPopup();

widgets/chatwidgetheader.h

@@ -61,6 +61,7 @@ private slots:
     void menuAddSplit();
     void menuCloseSplit();
     void menuMoveSplit();
+    void menuPopup();
     void menuChangeChannel();
     void menuClearChat();
     void menuOpenChannel();

widgets/chatwidgetview.cpp

@@ -37,17 +37,33 @@ ChatWidgetView::~ChatWidgetView()
 bool
 ChatWidgetView::layoutMessages()
 {
-    bool showScrollbar = false;
-
     auto messages = chatWidget->getMessagesSnapshot();
 
-    bool redraw = false;
+    if (messages.getLength() == 0) {
+        this->scrollbar.setVisible(false);
 
-    //    for (std::shared_ptr<messages::Message> &message : messages) {
+        return false;
-    //        redraw |= message.get()->layout(this->width(), true);
+    }
-    //    }
 
-    redraw = true;
+    bool showScrollbar = false, redraw = false;
+
+    int start = this->scrollbar.getCurrentValue();
+
+    int y = -(messages[start].get()->getHeight() *
+              (fmod(this->scrollbar.getCurrentValue(), 1)));
+
+    for (int i = start; i < messages.getLength(); ++i) {
+        auto messagePtr = messages[i];
+        auto message = messagePtr.get();
+
+        redraw |= message->layout(this->width(), true);
+
+        y += message->getHeight();
+
+        if (y >= height()) {
+            break;
+        }
+    }
 
     int h = this->height() - 8;
 
@@ -87,18 +103,15 @@ ChatWidgetView::resizeEvent(QResizeEvent *)
 void
 ChatWidgetView::paintEvent(QPaintEvent *)
 {
-    QPainter painter(this);
+    QPainter _painter(this);
 
-    painter.setRenderHint(QPainter::SmoothPixmapTransform);
+    _painter.setRenderHint(QPainter::SmoothPixmapTransform);
-
-    //    auto c = this->chatWidget->getChannel();
-
-    QColor color;
 
     ColorScheme &scheme = ColorScheme::getInstance();
 
     // code for tesing colors
     /*
+    QColor color;
     static ConcurrentMap<qreal, QImage *> imgCache;
 
     std::function<QImage *(qreal)> getImg = [&scheme](qreal light) {
@@ -129,11 +142,6 @@ ChatWidgetView::paintEvent(QPaintEvent *)
 
     painter.fillRect(QRect(0, 9, 500, 2), QColor(0, 0, 0));*/
 
-    //    if (c == NULL)
-    //        return;
-
-    //    auto messages = c->getMessageSnapshot();
-
     auto messages = chatWidget->getMessagesSnapshot();
 
     int start = this->scrollbar.getCurrentValue();
@@ -148,20 +156,37 @@ ChatWidgetView::paintEvent(QPaintEvent *)
     for (int i = start; i < messages.getLength(); ++i) {
         messages::MessageRef *messageRef = messages[i].get();
 
-        for (messages::WordPart const &wordPart : messageRef->getWordParts()) {
+        std::shared_ptr<QPixmap> bufferPtr = messageRef->buffer;
+        QPixmap *buffer = bufferPtr.get();
+
+        bool updateBuffer = messageRef->updateBuffer;
+
+        if (buffer == nullptr) {
+            buffer = new QPixmap(this->width(), messageRef->getHeight());
+            bufferPtr = std::shared_ptr<QPixmap>(buffer);
+            updateBuffer = true;
+        }
+
+        if (updateBuffer) {
+            QPainter painter(buffer);
+            painter.fillRect(buffer->rect(), scheme.ChatBackground);
+
+            for (messages::WordPart const &wordPart :
+                 messageRef->getWordParts()) {
                 painter.setPen(QColor(255, 0, 0));
-            painter.drawRect(wordPart.getX(), wordPart.getY() + y,
+                painter.drawRect(wordPart.getX(), wordPart.getY(),
                                  wordPart.getWidth(), wordPart.getHeight());
 
                 // image
                 if (wordPart.getWord().isImage()) {
-                messages::LazyLoadedImage &lli = wordPart.getWord().getImage();
+                    messages::LazyLoadedImage &lli =
+                        wordPart.getWord().getImage();
 
                     const QPixmap *image = lli.getPixmap();
 
                     if (image != NULL) {
                         painter.drawPixmap(
-                        QRect(wordPart.getX(), wordPart.getY() + y,
+                            QRect(wordPart.getX(), wordPart.getY(),
                                   wordPart.getWidth(), wordPart.getHeight()),
                             *image);
                     }
@@ -176,12 +201,19 @@ ChatWidgetView::paintEvent(QPaintEvent *)
                     painter.setFont(wordPart.getWord().getFont());
 
                     painter.drawText(
-                    QRectF(wordPart.getX(), wordPart.getY() + y, 10000, 10000),
+                        QRectF(wordPart.getX(), wordPart.getY(), 10000, 10000),
                         wordPart.getText(),
                         QTextOption(Qt::AlignLeft | Qt::AlignTop));
                 }
             }
 
+            messageRef->updateBuffer = false;
+        }
+
+        messageRef->buffer = bufferPtr;
+
+        _painter.drawPixmap(0, y, *buffer);
+
         y += messageRef->getHeight();
 
         if (y > height()) {