pixelsampler: added pixel sampler panel

When visible, this panel will show the current reference and display transformed
color under the cursor of any viewer.

app/panel/CMakeLists.txt

@@ -19,6 +19,7 @@ add_subdirectory(curve)
 add_subdirectory(footageviewer)
 add_subdirectory(node)
 add_subdirectory(param)
+add_subdirectory(pixelsampler)
 add_subdirectory(project)
 add_subdirectory(sequenceviewer)
 add_subdirectory(taskmanager)

app/panel/pixelsampler/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}
+  panel/pixelsampler/pixelsamplerpanel.h
+  panel/pixelsampler/pixelsamplerpanel.cpp
+  PARENT_SCOPE
+)

app/panel/pixelsampler/pixelsamplerpanel.cpp

@@ -0,0 +1,23 @@
+#include "pixelsamplerpanel.h"
+
+PixelSamplerPanel::PixelSamplerPanel(QWidget *parent) :
+  PanelWidget(parent)
+{
+  // FIXME: This won't work if there's ever more than one of this panel
+  setObjectName("ProjectPanel");
+
+  sampler_widget_ = new ManagedPixelSamplerWidget();
+  setWidget(sampler_widget_);
+
+  Retranslate();
+}
+
+void PixelSamplerPanel::SetValues(const Color &reference, const Color &display)
+{
+  sampler_widget_->SetValues(reference, display);
+}
+
+void PixelSamplerPanel::Retranslate()
+{
+  SetTitle(tr("Pixel Sampler"));
+}

app/panel/pixelsampler/pixelsamplerpanel.h

@@ -0,0 +1,23 @@
+#ifndef PIXELSAMPLERPANEL_H
+#define PIXELSAMPLERPANEL_H
+
+#include "widget/panel/panel.h"
+#include "widget/viewer/pixelsamplerwidget.h"
+
+class PixelSamplerPanel : public PanelWidget
+{
+  Q_OBJECT
+public:
+  PixelSamplerPanel(QWidget* parent = nullptr);
+
+public slots:
+  void SetValues(const Color& reference, const Color& display);
+
+private:
+  virtual void Retranslate() override;
+
+  ManagedPixelSamplerWidget* sampler_widget_;
+
+};
+
+#endif // PIXELSAMPLERPANEL_H

app/panel/viewer/viewerbase.cpp

@@ -45,3 +45,11 @@ VideoRenderBackend *ViewerPanelBase::video_renderer() const
 {
   return static_cast<ViewerWidget*>(GetTimeBasedWidget())->video_renderer();
 }
+
+void ViewerPanelBase::ConnectPixelSamplerPanel(PixelSamplerPanel *psp)
+{
+  ViewerWidget* vw = static_cast<ViewerWidget*>(GetTimeBasedWidget());
+
+  connect(psp, &PixelSamplerPanel::visibilityChanged, vw, &ViewerWidget::SetSignalCursorColorEnabled);
+  connect(vw, &ViewerWidget::CursorColor, psp, &PixelSamplerPanel::SetValues);
+}

app/panel/viewer/viewerbase.h

@@ -1,6 +1,7 @@
 #ifndef VIEWERPANELBASE_H
 #define VIEWERPANELBASE_H
 
+#include "panel/pixelsampler/pixelsamplerpanel.h"
 #include "panel/timebased/timebased.h"
 #include "widget/viewer/viewer.h"
 
@@ -24,6 +25,8 @@ public:
 
   VideoRenderBackend* video_renderer() const;
 
+  void ConnectPixelSamplerPanel(PixelSamplerPanel *psp);
+
 };
 
 #endif // VIEWERPANELBASE_H