colordialog: began widgets and dialogs for a managed color picker

app/dialog/CMakeLists.txt

@@ -16,6 +16,7 @@
 
 add_subdirectory(about)
 add_subdirectory(actionsearch)
+add_subdirectory(color)
 add_subdirectory(export)
 add_subdirectory(footageproperties)
 add_subdirectory(keyframeproperties)

app/dialog/color/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}
+  dialog/color/colordialog.h
+  dialog/color/colordialog.cpp
+  PARENT_SCOPE
+)

app/dialog/color/colordialog.cpp

@@ -0,0 +1,28 @@
+#include "colordialog.h"
+
+#include <QDialogButtonBox>
+#include <QSplitter>
+#include <QVBoxLayout>
+
+#include "widget/colorwheel/colorwheelwidget.h"
+
+ColorDialog::ColorDialog(ColorManager* color_manager, QWidget *parent) :
+  QDialog(parent),
+  color_manager_(color_manager)
+{
+  QVBoxLayout* layout = new QVBoxLayout(this);
+
+  QSplitter* splitter = new QSplitter(Qt::Horizontal);
+  layout->addWidget(splitter);
+
+  ColorWheelWidget* cww1 = new ColorWheelWidget();
+  ColorWheelWidget* cww2 = new ColorWheelWidget();
+
+  splitter->addWidget(cww1);
+  splitter->addWidget(cww2);
+
+  QDialogButtonBox* buttons = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel);
+  connect(buttons, &QDialogButtonBox::accepted, this, &QDialog::accept);
+  connect(buttons, &QDialogButtonBox::rejected, this, &QDialog::reject);
+  layout->addWidget(buttons);
+}

app/dialog/color/colordialog.h

@@ -0,0 +1,19 @@
+#ifndef COLORDIALOG_H
+#define COLORDIALOG_H
+
+#include <QDialog>
+
+#include "render/color.h"
+#include "render/colormanager.h"
+
+class ColorDialog : public QDialog
+{
+public:
+  ColorDialog(ColorManager* color_manager, QWidget* parent = nullptr);
+
+private:
+  ColorManager* color_manager_;
+
+};
+
+#endif // COLORDIALOG_H

app/widget/CMakeLists.txt

@@ -16,6 +16,8 @@
 
 add_subdirectory(audiomonitor)
 add_subdirectory(clickablelabel)
+add_subdirectory(colorbutton)
+add_subdirectory(colorwheel)
 add_subdirectory(columnedgridlayout)
 add_subdirectory(curvewidget)
 add_subdirectory(flowlayout)

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

app/widget/colorwheel/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/colorwheel/colorwheelwidget.h
+  widget/colorwheel/colorwheelwidget.cpp
+  PARENT_SCOPE
+)

app/widget/colorwheel/colorwheelwidget.cpp

@@ -0,0 +1,49 @@
+#include "colorwheelwidget.h"
+
+#include <QPainter>
+#include <QtMath>
+
+#define RADIAN_TO_0_1_RANGE 0.15915494309188486110703542313983
+
+ColorWheelWidget::ColorWheelWidget(QWidget *parent) :
+  QWidget(parent)
+{
+
+}
+
+void ColorWheelWidget::paintEvent(QPaintEvent *event)
+{
+  QWidget::paintEvent(event);
+
+  QPainter p(this);
+
+  qreal radius = qMin(width(), height()) / 2;
+  QPoint center = rect().center();
+
+  p.setPen(Qt::red);
+
+  int x_start = center.x() - radius;
+  int x_end= center.x() + radius;
+  int y_start = center.y() - radius;
+  int y_end= center.y() + radius;
+
+  for (int i=x_start;i<x_end;i++) {
+    for (int j=y_start;j<y_end;j++) {
+      qreal opposite = j - center.y();
+      qreal adjacent = i - center.x();
+      qreal pix_len = qSqrt(qPow(adjacent, 2) + qPow(opposite, 2));
+
+      if (pix_len <= radius) {
+        qreal hue = qAtan2(opposite, adjacent) * RADIAN_TO_0_1_RANGE + 0.5;
+        qreal sat = (pix_len / radius);
+        qreal value = 1.0;
+
+        QColor c;
+        c.setHsvF(hue, sat, value);
+        p.setPen(c);
+
+        p.drawPoint(i, j);
+      }
+    }
+  }
+}

app/widget/colorwheel/colorwheelwidget.h

@@ -0,0 +1,16 @@
+#ifndef COLORWHEELWIDGET_H
+#define COLORWHEELWIDGET_H
+
+#include <QWidget>
+
+class ColorWheelWidget : public QWidget
+{
+public:
+  ColorWheelWidget(QWidget* parent = nullptr);
+
+protected:
+  virtual void paintEvent(QPaintEvent* event) override;
+
+};
+
+#endif // COLORWHEELWIDGET_H

app/widget/nodeparamview/nodeparamviewwidgetbridge.cpp

@@ -12,6 +12,7 @@
 #include "nodeparamviewundo.h"
 #include "project/item/sequence/sequence.h"
 #include "undo/undostack.h"
+#include "widget/colorbutton/colorbutton.h"
 #include "widget/footagecombobox/footagecombobox.h"
 #include "widget/slider/floatslider.h"
 #include "widget/slider/integerslider.h"
@@ -92,8 +93,12 @@ void NodeParamViewWidgetBridge::CreateWidgets()
     // FIXME: File selector
     break;
   case NodeParam::kColor:
-    // FIXME: Color selector
+  {
+    ColorButton* color_button = new ColorButton();
+    widgets_.append(color_button);
+    connect(color_button, &ColorButton::ColorChanged, this, &NodeParamViewWidgetBridge::WidgetCallback);
     break;
+  }
   case NodeParam::kText:
   {
     QLineEdit* line_edit = new QLineEdit();