content: Reapply "Start splitting up chrome/browser/ui/gtk/gtk_util.h" (r98287)

ui/base/gtk/gtk_hig_constants.h

Index: ui/base/gtk/gtk_hig_constants.h
diff --git a/ui/base/gtk/gtk_hig_constants.h b/ui/base/gtk/gtk_hig_constants.h
new file mode 100644
index 0000000000000000000000000000000000000000..d868b2ad4f9ac0befa1bed5ac5ea61ccfdc334ef
--- /dev/null
+++ b/ui/base/gtk/gtk_hig_constants.h
@@ -0,0 +1,58 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// A list of constants that are used in setting up GTK widgets.
+//
+// This contains named color constants, along with spacing constants from the
+// GNOME Human Interface Guide.
+
+#ifndef UI_BASE_GTK_GTK_HIG_CONSTANTS_H_
+#define UI_BASE_GTK_GTK_HIG_CONSTANTS_H_
+#pragma once
+
+#include "ui/base/ui_export.h"
+
+typedef struct _GdkColor GdkColor;
+
+namespace ui {
+
+// Multiply uint8 color components by this.
+const int kSkiaToGDKMultiplier = 257;
+
+// Named color constants.
+UI_EXPORT extern const GdkColor kGdkWhite;
+UI_EXPORT extern const GdkColor kGdkGray;
+UI_EXPORT extern const GdkColor kGdkBlack;
+UI_EXPORT extern const GdkColor kGdkGreen;
+
+// Constants relating to the layout of dialog windows:
+// (See http://library.gnome.org/devel/hig-book/stable/design-window.html.en)
+
+// Spacing between controls of the same group.
+const int kControlSpacing = 6;
+
+// Horizontal spacing between a label and its control.
+const int kLabelSpacing = 12;
+
+// Indent of the controls within each group.
+const int kGroupIndent = 12;
+
+// Space around the outside of a dialog's contents.
+const int kContentAreaBorder = 12;
+
+// Spacing between groups of controls.
+const int kContentAreaSpacing = 18;
+
+// Horizontal Spacing between controls in a form.
+const int kFormControlSpacing = 10;
+
+}  // namespace ui
+
+// Define a macro for creating GdkColors from RGB values.  This is a macro to
+// allow static construction of literals, etc.  Use this like:
+//   GdkColor white = GDK_COLOR_RGB(0xff, 0xff, 0xff);
+#define GDK_COLOR_RGB(r, g, b) {0, r * ::ui::kSkiaToGDKMultiplier,  \
+        g * ::ui::kSkiaToGDKMultiplier, b * ::ui::kSkiaToGDKMultiplier}
+
+#endif  // UI_BASE_GTK_GTK_HIG_CONSTANTS_H_