widget/gtk/nsColorPicker.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef nsColorPicker_h__
   7 #define nsColorPicker_h__
   8
   9 #include <gtk/gtk.h>
  10
  11 #include "nsCOMPtr.h"
  12 #include "nsIColorPicker.h"
  13 #include "nsString.h"
  14
  15 // Enable Gtk3 system color picker.
  16 #define ACTIVATE_GTK3_COLOR_PICKER 1
  17
  18 class nsIWidget;
  19
  20 class nsColorPicker final : public nsIColorPicker {
  21  public:
  22   NS_DECL_ISUPPORTS
  23   NS_DECL_NSICOLORPICKER
  24
  25   nsColorPicker() = default;
  26
  27  private:
  28   ~nsColorPicker() = default;
  29
  30   static nsString ToHexString(int n);
  31
  32   static void OnResponse(GtkWidget* dialog, gint response_id,
  33                          gpointer user_data);
  34   static void OnDestroy(GtkWidget* dialog, gpointer user_data);
  35
  36 #if defined(ACTIVATE_GTK3_COLOR_PICKER)
  37   static void OnColorChanged(GtkColorChooser* color_chooser, GdkRGBA* color,
  38                              gpointer user_data);
  39
  40   static int convertGdkRgbaComponent(gdouble color_component);
  41   static gdouble convertToGdkRgbaComponent(int color_component);
  42   static GdkRGBA convertToRgbaColor(nscolor color);
  43
  44   void Update(GdkRGBA* color);
  45   void SetColor(const GdkRGBA* color);
  46 #else
  47   static void OnColorChanged(GtkColorSelection* colorselection,
  48                              gpointer user_data);
  49
  50   // Conversion functions for color
  51   static int convertGdkColorComponent(guint16 color_component);
  52   static guint16 convertToGdkColorComponent(int color_component);
  53   static GdkColor convertToGdkColor(nscolor color);
  54
  55   static GtkColorSelection* WidgetGetColorSelection(GtkWidget* widget);
  56
  57   void Update(GtkColorSelection* colorselection);
  58   void ReadValueFromColorSelection(GtkColorSelection* colorselection);
  59 #endif
  60
  61   void Done(GtkWidget* dialog, gint response_id);
  62
  63   nsCOMPtr<nsIWidget> mParentWidget;
  64   nsCOMPtr<nsIColorPickerShownCallback> mCallback;
  65   nsString mTitle;
  66   nsString mColor;
  67   nsString mInitialColor;
  68   nsTArray<nsString> mDefaultColors;
  69 };
  70
  71 #endif  // nsColorPicker_h__