Actually add marker source code

app/widget/marker/CMakeLists.txt

@@ -0,0 +1,22 @@
+# Olive - Non-Linear Video Editor
+# Copyright (C) 2021 Olive Team
+#
+# 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/>.
+
+set(OLIVE_SOURCES
+  ${OLIVE_SOURCES}
+  widget/marker/marker.h
+  widget/marker/marker.cpp
+  PARENT_SCOPE
+)

app/widget/marker/marker.cpp

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+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2021 Olive Team
+
+  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 "marker.h"
+
+#include <QPainter>
+
+#include "common/qtutils.h"
+#include "ui/colorcoding.h"
+#include "widget/menu/menu.h"
+#include "widget/menu/menushared.h"
+
+namespace olive {
+
+Marker::Marker(QWidget *parent) :
+	QWidget(parent),
+    marker_color_(Qt::green)
+{
+  setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
+  setMinimumSize(20, 20);
+  setContextMenuPolicy(Qt::CustomContextMenu);
+
+  connect(this, &Marker::customContextMenuRequested, this, &Marker::ShowContextMenu);
+
+  color_coding_menu_ = new ColorLabelMenu();
+  connect(color_coding_menu_, &ColorLabelMenu::ColorSelected, this, &Marker::SetColor);
+}
+
+void Marker::paintEvent(QPaintEvent *event)
+{
+  QFontMetrics fm = fontMetrics();
+
+  int text_height = fm.height();
+  int marker_width_ = QtUtils::QFontMetricsWidth(fm, "H");
+
+  int y = text_height; //13
+
+  int half_width = marker_width_ / 2;
+
+  int x = half_width; //3
+
+  if (x + half_width < 0 || x - half_width > width()) {
+    return;
+  }
+
+  QPainter p(this);
+  p.setPen(Qt::black);
+  p.setBrush(marker_color_);
+
+  p.setRenderHint(QPainter::Antialiasing);
+
+  int half_text_height = text_height / 3;
+
+  QPoint points[] = {
+      QPoint(x, y),
+      QPoint(x - half_width, y - half_text_height),
+      QPoint(x - half_width, y - text_height),
+      QPoint(x + 1 + half_width, y - text_height),
+      QPoint(x + 1 + half_width, y - half_text_height),
+      QPoint(x + 1, y),
+  };
+
+  p.drawPolygon(points, 6);
+
+  p.setRenderHint(QPainter::Antialiasing, false);
+}
+
+void Marker::ShowContextMenu() {
+  Menu m(this);
+
+  m.addMenu(color_coding_menu_);
+
+  m.exec(QCursor::pos());
+}
+
+void Marker::SetColor(int c)
+{
+  marker_color_ = ColorCoding::GetColor(c).toQColor();
+
+  update();
+}
+
+}  // namespace olive

app/widget/marker/marker.h

@@ -0,0 +1,58 @@
+/***
+
+  Olive - Non-Linear Video Editor
+  Copyright (C) 2021 Olive Team
+
+  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/>.
+
+***/
+
+#ifndef MARKER_H
+#define MARKER_H
+
+#include <QWidget>
+#include <QPushButton>
+
+#include "common/define.h"
+#include "widget/colorlabelmenu/colorlabelmenu.h"
+
+namespace olive {
+
+class Marker : public QWidget {
+  Q_OBJECT
+ public:
+  Marker(QWidget* parent = nullptr);
+
+ protected:
+  void paintEvent(QPaintEvent* event) override;
+  //virtual void mouseReleaseEvent(QMouseEvent* event) override;
+  //virtual void mouseDoubleClickEvent(QMouseEvent* event) override;
+
+ signals:
+  //void MouseClicked();
+  //void MouseDoubleClicked();
+
+ private:
+  ColorLabelMenu* color_coding_menu_;
+
+  QColor marker_color_;
+
+ private slots:
+  void ShowContextMenu();
+  void SetColor(int c);
+};
+
+}  // namespace olive
+
+#endif  // MARKER_H