diff --git a/src/emoji/Panel.cpp b/src/emoji/Panel.cpp
new file mode 100644
index 00000000..710b501e
--- /dev/null
+++ b/src/emoji/Panel.cpp
@@ -0,0 +1,236 @@
+/*
+ * nheko Copyright (C) 2017 Konstantinos Sideris <siderisk@auth.gr>
+ *
+ * This program 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.
+ *
+ * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <QPushButton>
+#include <QScrollBar>
+#include <QVBoxLayout>
+
+#include "ui/DropShadow.h"
+#include "ui/FlatButton.h"
+
+#include "emoji/Category.h"
+#include "emoji/Panel.h"
+
+using namespace emoji;
+
+Panel::Panel(QWidget *parent)
+ : QWidget(parent)
+ , shadowMargin_{2}
+ , width_{370}
+ , height_{350}
+ , categoryIconSize_{20}
+{
+ setStyleSheet("QWidget {border: none;}"
+ "QScrollBar:vertical { width: 0px; margin: 0px; }"
+ "QScrollBar::handle:vertical { min-height: 30px; }");
+
+ setAttribute(Qt::WA_ShowWithoutActivating, true);
+ setWindowFlags(Qt::Tool | Qt::FramelessWindowHint | Qt::NoDropShadowWindowHint);
+
+ auto mainWidget = new QWidget(this);
+ mainWidget->setMaximumSize(width_, height_);
+
+ auto topLayout = new QVBoxLayout(this);
+ topLayout->addWidget(mainWidget);
+ topLayout->setMargin(shadowMargin_);
+ topLayout->setSpacing(0);
+
+ auto contentLayout = new QVBoxLayout(mainWidget);
+ contentLayout->setMargin(0);
+ contentLayout->setSpacing(0);
+
+ auto emojiCategories = new QFrame(mainWidget);
+
+ auto categoriesLayout = new QHBoxLayout(emojiCategories);
+ categoriesLayout->setSpacing(0);
+ categoriesLayout->setMargin(0);
+
+ QIcon icon;
+
+ auto peopleCategory = new FlatButton(emojiCategories);
+ icon.addFile(":/icons/icons/emoji-categories/people.png");
+ peopleCategory->setIcon(icon);
+ peopleCategory->setIconSize(QSize(categoryIconSize_, categoryIconSize_));
+
+ auto natureCategory_ = new FlatButton(emojiCategories);
+ icon.addFile(":/icons/icons/emoji-categories/nature.png");
+ natureCategory_->setIcon(icon);
+ natureCategory_->setIconSize(QSize(categoryIconSize_, categoryIconSize_));
+
+ auto foodCategory_ = new FlatButton(emojiCategories);
+ icon.addFile(":/icons/icons/emoji-categories/foods.png");
+ foodCategory_->setIcon(icon);
+ foodCategory_->setIconSize(QSize(categoryIconSize_, categoryIconSize_));
+
+ auto activityCategory = new FlatButton(emojiCategories);
+ icon.addFile(":/icons/icons/emoji-categories/activity.png");
+ activityCategory->setIcon(icon);
+ activityCategory->setIconSize(QSize(categoryIconSize_, categoryIconSize_));
+
+ auto travelCategory = new FlatButton(emojiCategories);
+ icon.addFile(":/icons/icons/emoji-categories/travel.png");
+ travelCategory->setIcon(icon);
+ travelCategory->setIconSize(QSize(categoryIconSize_, categoryIconSize_));
+
+ auto objectsCategory = new FlatButton(emojiCategories);
+ icon.addFile(":/icons/icons/emoji-categories/objects.png");
+ objectsCategory->setIcon(icon);
+ objectsCategory->setIconSize(QSize(categoryIconSize_, categoryIconSize_));
+
+ auto symbolsCategory = new FlatButton(emojiCategories);
+ icon.addFile(":/icons/icons/emoji-categories/symbols.png");
+ symbolsCategory->setIcon(icon);
+ symbolsCategory->setIconSize(QSize(categoryIconSize_, categoryIconSize_));
+
+ auto flagsCategory = new FlatButton(emojiCategories);
+ icon.addFile(":/icons/icons/emoji-categories/flags.png");
+ flagsCategory->setIcon(icon);
+ flagsCategory->setIconSize(QSize(categoryIconSize_, categoryIconSize_));
+
+ categoriesLayout->addWidget(peopleCategory);
+ categoriesLayout->addWidget(natureCategory_);
+ categoriesLayout->addWidget(foodCategory_);
+ categoriesLayout->addWidget(activityCategory);
+ categoriesLayout->addWidget(travelCategory);
+ categoriesLayout->addWidget(objectsCategory);
+ categoriesLayout->addWidget(symbolsCategory);
+ categoriesLayout->addWidget(flagsCategory);
+
+ scrollArea_ = new QScrollArea(this);
+ scrollArea_->setWidgetResizable(true);
+ scrollArea_->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+
+ auto scrollWidget = new QWidget(this);
+ auto scrollLayout = new QVBoxLayout(scrollWidget);
+
+ scrollLayout->setMargin(0);
+ scrollLayout->setSpacing(0);
+ scrollArea_->setWidget(scrollWidget);
+
+ auto peopleEmoji =
+ new Category(tr("Smileys & People"), emoji_provider_.people, scrollWidget);
+ scrollLayout->addWidget(peopleEmoji);
+
+ auto natureEmoji =
+ new Category(tr("Animals & Nature"), emoji_provider_.nature, scrollWidget);
+ scrollLayout->addWidget(natureEmoji);
+
+ auto foodEmoji = new Category(tr("Food & Drink"), emoji_provider_.food, scrollWidget);
+ scrollLayout->addWidget(foodEmoji);
+
+ auto activityEmoji = new Category(tr("Activity"), emoji_provider_.activity, scrollWidget);
+ scrollLayout->addWidget(activityEmoji);
+
+ auto travelEmoji =
+ new Category(tr("Travel & Places"), emoji_provider_.travel, scrollWidget);
+ scrollLayout->addWidget(travelEmoji);
+
+ auto objectsEmoji = new Category(tr("Objects"), emoji_provider_.objects, scrollWidget);
+ scrollLayout->addWidget(objectsEmoji);
+
+ auto symbolsEmoji = new Category(tr("Symbols"), emoji_provider_.symbols, scrollWidget);
+ scrollLayout->addWidget(symbolsEmoji);
+
+ auto flagsEmoji = new Category(tr("Flags"), emoji_provider_.flags, scrollWidget);
+ scrollLayout->addWidget(flagsEmoji);
+
+ contentLayout->addWidget(scrollArea_);
+ contentLayout->addWidget(emojiCategories);
+
+ connect(peopleEmoji, &Category::emojiSelected, this, &Panel::emojiSelected);
+ connect(peopleCategory, &QPushButton::clicked, [this, peopleEmoji]() {
+ this->showCategory(peopleEmoji);
+ });
+
+ connect(natureEmoji, &Category::emojiSelected, this, &Panel::emojiSelected);
+ connect(natureCategory_, &QPushButton::clicked, [this, natureEmoji]() {
+ this->showCategory(natureEmoji);
+ });
+
+ connect(foodEmoji, &Category::emojiSelected, this, &Panel::emojiSelected);
+ connect(foodCategory_, &QPushButton::clicked, [this, foodEmoji]() {
+ this->showCategory(foodEmoji);
+ });
+
+ connect(activityEmoji, &Category::emojiSelected, this, &Panel::emojiSelected);
+ connect(activityCategory, &QPushButton::clicked, [this, activityEmoji]() {
+ this->showCategory(activityEmoji);
+ });
+
+ connect(travelEmoji, &Category::emojiSelected, this, &Panel::emojiSelected);
+ connect(travelCategory, &QPushButton::clicked, [this, travelEmoji]() {
+ this->showCategory(travelEmoji);
+ });
+
+ connect(objectsEmoji, &Category::emojiSelected, this, &Panel::emojiSelected);
+ connect(objectsCategory, &QPushButton::clicked, [this, objectsEmoji]() {
+ this->showCategory(objectsEmoji);
+ });
+
+ connect(symbolsEmoji, &Category::emojiSelected, this, &Panel::emojiSelected);
+ connect(symbolsCategory, &QPushButton::clicked, [this, symbolsEmoji]() {
+ this->showCategory(symbolsEmoji);
+ });
+
+ connect(flagsEmoji, &Category::emojiSelected, this, &Panel::emojiSelected);
+ connect(flagsCategory, &QPushButton::clicked, [this, flagsEmoji]() {
+ this->showCategory(flagsEmoji);
+ });
+}
+
+void
+Panel::showCategory(const Category *category)
+{
+ auto posToGo = category->mapToParent(QPoint()).y();
+ auto current = scrollArea_->verticalScrollBar()->value();
+
+ if (current == posToGo)
+ return;
+
+ // HACK
+ // If we want to go to a previous category and position the label at the top
+ // the 6*50 offset won't work because not all the categories have the same
+ // height. To ensure the category is at the top, we move to the top and go as
+ // normal to the next category.
+ if (current > posToGo)
+ this->scrollArea_->ensureVisible(0, 0, 0, 0);
+
+ posToGo += 6 * 50;
+ this->scrollArea_->ensureVisible(0, posToGo, 0, 0);
+}
+
+void
+Panel::paintEvent(QPaintEvent *event)
+{
+ Q_UNUSED(event);
+
+ QStyleOption opt;
+ opt.init(this);
+ QPainter p(this);
+ style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
+
+ DropShadow::draw(p,
+ shadowMargin_,
+ 4.0,
+ QColor(120, 120, 120, 92),
+ QColor(255, 255, 255, 0),
+ 0.0,
+ 1.0,
+ 0.6,
+ width(),
+ height());
+}
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