colordialog: began widgets and dialogs for a managed color picker

app/widget/colorbutton/CMakeLists.txt

@@ -0,0 +1,22 @@
+# Olive - Non-Linear Video Editor
+# Copyright (C) 2019 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/colorbutton/colorbutton.h
+  widget/colorbutton/colorbutton.cpp
+  PARENT_SCOPE
+)

app/widget/colorbutton/colorbutton.cpp

@@ -0,0 +1,15 @@
+#include "colorbutton.h"
+
+#include "dialog/color/colordialog.h"
+
+ColorButton::ColorButton(QWidget *parent) :
+  QPushButton(parent)
+{
+  connect(this, &ColorButton::clicked, this, &ColorButton::ShowColorDialog);
+}
+
+void ColorButton::ShowColorDialog()
+{
+  ColorDialog cd(nullptr);
+  cd.exec();
+}

app/widget/colorbutton/colorbutton.h

@@ -0,0 +1,20 @@
+#ifndef COLORBUTTON_H
+#define COLORBUTTON_H
+
+#include <QPushButton>
+
+class ColorButton : public QPushButton
+{
+  Q_OBJECT
+public:
+  ColorButton(QWidget* parent = nullptr);
+
+signals:
+  void ColorChanged();
+
+private slots:
+  void ShowColorDialog();
+
+};
+
+#endif // COLORBUTTON_H