feat: Prepare widget for chat

widgets/EditorChatButton.cpp

@@ -0,0 +1,140 @@
+/* 
+ * Copyright (C) 2025 Petr Mironychev
+ *
+ * This file is part of QodeAssist.
+ *
+ * QodeAssist is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * QodeAssist is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with QodeAssist. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "EditorChatButton.hpp"
+
+#include <utils/theme/theme.h>
+#include <QMouseEvent>
+#include <QPainter>
+
+namespace QodeAssist {
+
+EditorChatButton::EditorChatButton(QWidget *parent)
+    : QWidget(parent)
+{
+    m_textColor = Utils::creatorTheme()->color(Utils::Theme::TextColorNormal);
+    m_backgroundColor = Utils::creatorTheme()->color(Utils::Theme::BackgroundColorNormal);
+
+    m_logoPixmap = QPixmap(":/resources/images/qoderassist-icon.png");
+
+    if (!m_logoPixmap.isNull()) {
+        QImage image = m_logoPixmap.toImage();
+        image = image.convertToFormat(QImage::Format_ARGB32);
+
+        for (int y = 0; y < image.height(); ++y) {
+            for (int x = 0; x < image.width(); ++x) {
+                QColor pixelColor = QColor::fromRgba(image.pixel(x, y));
+
+                int brightness = (pixelColor.red() + pixelColor.green() + pixelColor.blue()) / 3;
+
+                if (brightness > 200) {
+                    pixelColor.setAlpha(0);
+                    image.setPixelColor(x, y, pixelColor);
+                } else if (pixelColor.alpha() > 0) {
+                    int alpha = pixelColor.alpha();
+                    pixelColor = m_textColor;
+                    pixelColor.setAlpha(alpha);
+                    image.setPixelColor(x, y, pixelColor);
+                }
+            }
+        }
+
+        m_logoPixmap = QPixmap::fromImage(image);
+        m_logoPixmap = m_logoPixmap.scaled(24, 24, Qt::KeepAspectRatio, Qt::SmoothTransformation);
+    }
+
+    setFixedSize(40, 40);
+    setCursor(Qt::PointingHandCursor);
+    setToolTip(tr("Open QodeAssist Chat"));
+}
+
+EditorChatButton::~EditorChatButton() = default;
+
+void EditorChatButton::paintEvent(QPaintEvent *)
+{
+    QPainter painter(this);
+    painter.setRenderHint(QPainter::Antialiasing);
+
+    QColor bgColor = m_backgroundColor;
+    if (m_isPressed) {
+        bgColor = bgColor.darker(120);
+    } else if (m_isHovered) {
+        bgColor = bgColor.lighter(110);
+    }
+    painter.fillRect(rect(), bgColor);
+
+    QRect buttonRect = rect().adjusted(4, 4, -4, -4);
+    painter.setPen(Qt::NoPen);
+    QColor buttonBgColor
+        = m_isPressed ? Utils::creatorTheme()->color(Utils::Theme::BackgroundColorHover).darker(110)
+                      : Utils::creatorTheme()->color(Utils::Theme::BackgroundColorHover);
+
+    if (m_isHovered) {
+        buttonBgColor = buttonBgColor.lighter(110);
+    }
+    painter.setBrush(buttonBgColor);
+    painter.drawEllipse(buttonRect);
+
+    if (!m_logoPixmap.isNull()) {
+        QRect logoRect(
+            (width() - m_logoPixmap.width()) / 2,
+            (height() - m_logoPixmap.height()) / 2,
+            m_logoPixmap.width(),
+            m_logoPixmap.height());
+        painter.drawPixmap(logoRect, m_logoPixmap);
+    }
+}
+
+void EditorChatButton::mousePressEvent(QMouseEvent *event)
+{
+    if (event->button() == Qt::LeftButton) {
+        m_isPressed = true;
+        update();
+    }
+    QWidget::mousePressEvent(event);
+}
+
+void EditorChatButton::mouseReleaseEvent(QMouseEvent *event)
+{
+    if (event->button() == Qt::LeftButton && m_isPressed) {
+        m_isPressed = false;
+        update();
+        if (rect().contains(event->pos())) {
+            emit clicked();
+        }
+    }
+    QWidget::mouseReleaseEvent(event);
+}
+
+void EditorChatButton::enterEvent(QEnterEvent *event)
+{
+    m_isHovered = true;
+    update();
+    QWidget::enterEvent(event);
+}
+
+void EditorChatButton::leaveEvent(QEvent *event)
+{
+    m_isHovered = false;
+    m_isPressed = false;
+    update();
+    QWidget::leaveEvent(event);
+}
+
+} // namespace QodeAssist