PixelPaint: Add a histogram widget

This adds a simple histogram widget that visualizes the rgb-channels
and brightness for a given image. When hovering over the image it will
indicate what brightness level the pixel at the mouse position has.

1 files changed, 2 insertions, 0 deletions

diff --git a/Userland/Applications/PixelPaint/MainWidget.h b/Userland/Applications/PixelPaint/MainWidget.h
index 440b977cf0..c817abfa92 100644
--- a/Userland/Applications/PixelPaint/MainWidget.h
+++ b/Userland/Applications/PixelPaint/MainWidget.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include "Guide.h"
+#include "HistogramWidget.h"
 #include "IconBag.h"
 #include "Image.h"
 #include "ImageEditor.h"
@@ -58,6 +59,7 @@ private:
 
     RefPtr<ToolboxWidget> m_toolbox;
     RefPtr<PaletteWidget> m_palette_widget;
+    RefPtr<HistogramWidget> m_histogram_widget;
     RefPtr<LayerListWidget> m_layer_list_widget;
     RefPtr<LayerPropertiesWidget> m_layer_properties_widget;
     RefPtr<ToolPropertiesWidget> m_tool_properties_widget;