1 files changed, 71 insertions, 0 deletions
diff --git a/widget/gtk/nsColorPicker.h b/widget/gtk/nsColorPicker.h
new file mode 100644
index 0000000000..d693175717
--- /dev/null
+++ b/widget/gtk/nsColorPicker.h
@@ -0,0 +1,71 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsColorPicker_h__
+#define nsColorPicker_h__
+
+#include <gtk/gtk.h>
+
+#include "nsCOMPtr.h"
+#include "nsIColorPicker.h"
+#include "nsString.h"
+
+// Enable Gtk3 system color picker.
+#define ACTIVATE_GTK3_COLOR_PICKER 1
+
+class nsIWidget;
+
+class nsColorPicker final : public nsIColorPicker {
+ public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSICOLORPICKER
+
+  nsColorPicker() = default;
+
+ private:
+  ~nsColorPicker() = default;
+
+  static nsString ToHexString(int n);
+
+  static void OnResponse(GtkWidget* dialog, gint response_id,
+                         gpointer user_data);
+  static void OnDestroy(GtkWidget* dialog, gpointer user_data);
+
+#if defined(ACTIVATE_GTK3_COLOR_PICKER)
+  static void OnColorChanged(GtkColorChooser* color_chooser, GdkRGBA* color,
+                             gpointer user_data);
+
+  static int convertGdkRgbaComponent(gdouble color_component);
+  static gdouble convertToGdkRgbaComponent(int color_component);
+  static GdkRGBA convertToRgbaColor(nscolor color);
+
+  void Update(GdkRGBA* color);
+  void SetColor(const GdkRGBA* color);
+#else
+  static void OnColorChanged(GtkColorSelection* colorselection,
+                             gpointer user_data);
+
+  // Conversion functions for color
+  static int convertGdkColorComponent(guint16 color_component);
+  static guint16 convertToGdkColorComponent(int color_component);
+  static GdkColor convertToGdkColor(nscolor color);
+
+  static GtkColorSelection* WidgetGetColorSelection(GtkWidget* widget);
+
+  void Update(GtkColorSelection* colorselection);
+  void ReadValueFromColorSelection(GtkColorSelection* colorselection);
+#endif
+
+  void Done(GtkWidget* dialog, gint response_id);
+
+  nsCOMPtr<nsIWidget> mParentWidget;
+  nsCOMPtr<nsIColorPickerShownCallback> mCallback;
+  nsString mTitle;
+  nsString mColor;
+  nsString mInitialColor;
+  nsTArray<nsString> mDefaultColors;
+};
+
+#endif  // nsColorPicker_h__