improve "last message read" indicator (#802)

src/messages/layouts/MessageLayout.cpp

@@ -183,10 +183,15 @@ void MessageLayout::paint(QPainter &painter, int width, int y, int messageIndex,
 
     // draw last read message line
     if (isLastReadMessage) {
-        QColor color =
-            isWindowFocused
-                ? app->themes->tabs.selected.backgrounds.regular.color()
-                : app->themes->tabs.selected.backgrounds.unfocused.color();
+        QColor color;
+        if (getSettings()->lastMessageColor != "") {
+            color = QColor(getSettings()->lastMessageColor.getValue());
+        } else {
+            color =
+                isWindowFocused
+                    ? app->themes->tabs.selected.backgrounds.regular.color()
+                    : app->themes->tabs.selected.backgrounds.unfocused.color();
+        }
 
         QBrush brush(color, static_cast<Qt::BrushStyle>(
                                 getSettings()->lastMessagePattern.getValue()));

src/singletons/Settings.hpp

@@ -33,6 +33,8 @@ public:
         "/appearance/messages/showLastMessageIndicator", false};
     IntSetting lastMessagePattern = {"/appearance/messages/lastMessagePattern",
                                      Qt::VerPattern};
+    QStringSetting lastMessageColor = {"/appearance/messages/lastMessageColor",
+                                       ""};
     BoolSetting showEmptyInput = {"/appearance/showEmptyInputBox", true};
     BoolSetting showMessageLength = {"/appearance/messages/showMessageLength",
                                      false};

src/widgets/Notebook.cpp

@@ -11,6 +11,7 @@
 #include "widgets/helper/NotebookButton.hpp"
 #include "widgets/helper/NotebookTab.hpp"
 #include "widgets/helper/Shortcut.hpp"
+#include "widgets/splits/Split.hpp"
 #include "widgets/splits/SplitContainer.hpp"
 
 #include <QDebug>
@@ -490,4 +491,17 @@ SplitContainer *SplitNotebook::getOrAddSelectedPage()
                                    : this->addPage();
 }
 
+void SplitNotebook::select(QWidget *page)
+{
+    if (auto selectedPage = this->getSelectedPage()) {
+        if (auto splitContainer =
+                dynamic_cast<SplitContainer *>(selectedPage)) {
+            for (auto split : splitContainer->getSplits()) {
+                split->updateLastReadMessage();
+            }
+        }
+    }
+    this->Notebook::select(page);
+}
+
 }  // namespace chatterino

src/widgets/Notebook.hpp

@@ -30,7 +30,7 @@ public:
     void removeCurrentPage();
 
     int indexOf(QWidget *page) const;
-    void select(QWidget *page);
+    virtual void select(QWidget *page);
     void selectIndex(int index);
     void selectNextTab();
     void selectPreviousTab();
@@ -90,6 +90,7 @@ public:
 
     SplitContainer *addPage(bool select = false);
     SplitContainer *getOrAddSelectedPage();
+    void select(QWidget *page) override;
 
 private:
     void addCustomButtons();

src/widgets/settingspages/LookPage.cpp

@@ -11,6 +11,7 @@
 #include "widgets/helper/ChannelView.hpp"
 #include "widgets/helper/Line.hpp"
 
+#include <QColorDialog>
 #include <QFontDialog>
 #include <QFormLayout>
 #include <QGroupBox>
@@ -351,11 +352,60 @@ void LookPage::addLastReadMessageIndicatorPatternSelector(
             }();
         });
 
+    // color picker
+
+    QLabel *colorPreview = new QLabel();
+
+    auto updatePreviewColor = [colorPreview](QColor newColor) {
+        QPixmap pixmap(16, 16);
+        pixmap.fill(QColor(0, 0, 0, 255));
+
+        QPainter painter(&pixmap);
+        QBrush brush(newColor);
+        painter.fillRect(1, 1, pixmap.width() - 2, pixmap.height() - 2, brush);
+        colorPreview->setPixmap(pixmap);
+    };
+
+    auto getCurrentColor = []() {
+        return getSettings()->lastMessageColor != ""
+                   ? QColor(getSettings()->lastMessageColor.getValue())
+                   : getApp()
+                         ->themes->tabs.selected.backgrounds.regular.color();
+    };
+
+    updatePreviewColor(getCurrentColor());
+
+    QPushButton *button = new QPushButton("Select Color");
+    button->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Policy::Fixed);
+
+    QObject::connect(
+        button, &QPushButton::clicked, [updatePreviewColor, getCurrentColor]() {
+            QColor newColor = QColorDialog::getColor(getCurrentColor());
+            if (newColor.isValid()) {
+                updatePreviewColor(newColor);
+                getSettings()->lastMessageColor = newColor.name();
+            }
+        });
+
+    QPushButton *resetButton = new QPushButton("Reset Color");
+    resetButton->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Policy::Fixed);
+
+    QObject::connect(
+        resetButton, &QPushButton::clicked, [updatePreviewColor]() {
+            QColor defaultColor =
+                getApp()->themes->tabs.selected.backgrounds.regular.color();
+            updatePreviewColor(defaultColor);
+            getSettings()->lastMessageColor = "";
+        });
+
     // layout
     auto hbox = layout.emplace<QHBoxLayout>().withoutMargin();
     hbox.append(this->createCheckBox(LAST_MSG,
                                      getSettings()->showLastMessageIndicator));
     hbox.append(combo);
+    hbox.append(colorPreview);
+    hbox.append(button);
+    hbox.append(resetButton);
     hbox->addStretch(1);
 }