Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 634 insertions, 0 deletions

diff --git a/widget/gtk/gtkdrawing.h b/widget/gtk/gtkdrawing.h
new file mode 100644
index 0000000000..38dc1587fc
--- /dev/null
+++ b/widget/gtk/gtkdrawing.h
@@ -0,0 +1,634 @@
+/* -*- 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/. */
+
+/**
+ * gtkdrawing.h: GTK widget rendering utilities
+ *
+ * gtkdrawing provides an API for rendering GTK widgets in the
+ * current theme to a pixmap or window, without requiring an actual
+ * widget instantiation, similar to the Macintosh Appearance Manager
+ * or Windows XP's DrawThemeBackground() API.
+ */
+
+#ifndef _GTK_DRAWING_H_
+#define _GTK_DRAWING_H_
+
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
+#include <algorithm>
+#include "mozilla/Span.h"
+
+/*** type definitions ***/
+typedef struct {
+  guint8 active;
+  guint8 focused;
+  guint8 selected;
+  guint8 inHover;
+  guint8 disabled;
+  guint8 isDefault;
+  guint8 canDefault;
+  /* The depressed state is for buttons which remain active for a longer period:
+   * activated toggle buttons or buttons showing a popup menu. */
+  guint8 depressed;
+  guint8 backdrop;
+  gint32 curpos; /* curpos and maxpos are used for scrollbars */
+  gint32 maxpos;
+  gint32 scale; /* actual widget scale */
+} GtkWidgetState;
+
+/**
+ * A size in the same GTK pixel units as GtkBorder and GdkRectangle.
+ */
+struct MozGtkSize {
+  gint width;
+  gint height;
+
+  MozGtkSize& operator+=(const GtkBorder& aBorder) {
+    width += aBorder.left + aBorder.right;
+    height += aBorder.top + aBorder.bottom;
+    return *this;
+  }
+  MozGtkSize operator+(const GtkBorder& aBorder) const {
+    MozGtkSize result = *this;
+    return result += aBorder;
+  }
+  bool operator<(const MozGtkSize& aOther) const {
+    return (width < aOther.width && height <= aOther.height) ||
+           (width <= aOther.width && height < aOther.height);
+  }
+  void Include(MozGtkSize aOther) {
+    width = std::max(width, aOther.width);
+    height = std::max(height, aOther.height);
+  }
+  void Rotate() {
+    gint tmp = width;
+    width = height;
+    height = tmp;
+  }
+};
+
+typedef struct {
+  bool initialized;
+  struct {
+    MozGtkSize scrollbar;
+    MozGtkSize thumb;
+    MozGtkSize button;
+  } size;
+  struct {
+    GtkBorder scrollbar;
+    GtkBorder track;
+  } border;
+  struct {
+    GtkBorder thumb;
+  } margin;
+} ScrollbarGTKMetrics;
+
+typedef struct {
+  bool initialized;
+  MozGtkSize minSizeWithBorder;
+  GtkBorder borderAndPadding;
+} ToggleGTKMetrics;
+
+typedef struct {
+  MozGtkSize minSizeWithBorderMargin;
+  GtkBorder buttonMargin;
+  gint iconXPosition;
+  gint iconYPosition;
+  bool visible;
+  bool firstButton;
+  bool lastButton;
+} ToolbarButtonGTKMetrics;
+
+#define TOOLBAR_BUTTONS 3
+typedef struct {
+  bool initialized;
+  ToolbarButtonGTKMetrics button[TOOLBAR_BUTTONS];
+} ToolbarGTKMetrics;
+
+typedef struct {
+  bool initialized;
+  GtkBorder decorationSize;
+} CSDWindowDecorationSize;
+
+typedef enum {
+  MOZ_GTK_STEPPER_DOWN = 1 << 0,
+  MOZ_GTK_STEPPER_BOTTOM = 1 << 1,
+  MOZ_GTK_STEPPER_VERTICAL = 1 << 2
+} GtkScrollbarButtonFlags;
+
+typedef enum { MOZ_GTK_TRACK_OPAQUE = 1 << 0 } GtkScrollbarTrackFlags;
+
+/** flags for tab state **/
+typedef enum {
+  /* first eight bits are used to pass a margin */
+  MOZ_GTK_TAB_MARGIN_MASK = 0xFF,
+  /* the first tab in the group */
+  MOZ_GTK_TAB_FIRST = 1 << 9,
+  /* the selected tab */
+  MOZ_GTK_TAB_SELECTED = 1 << 10
+} GtkTabFlags;
+
+/*** result/error codes ***/
+#define MOZ_GTK_SUCCESS 0
+#define MOZ_GTK_UNKNOWN_WIDGET -1
+#define MOZ_GTK_UNSAFE_THEME -2
+
+/*** checkbox/radio flags ***/
+#define MOZ_GTK_WIDGET_CHECKED 1
+#define MOZ_GTK_WIDGET_INCONSISTENT (1 << 1)
+
+/*** widget type constants ***/
+enum WidgetNodeType : int {
+  /* Paints a GtkButton. flags is a GtkReliefStyle. */
+  MOZ_GTK_BUTTON,
+  /* Paints a button with image and no text */
+  MOZ_GTK_TOOLBAR_BUTTON,
+  /* Paints a toggle button */
+  MOZ_GTK_TOGGLE_BUTTON,
+  /* Paints a button arrow */
+  MOZ_GTK_BUTTON_ARROW,
+
+  /* Paints the container part of a GtkCheckButton. */
+  MOZ_GTK_CHECKBUTTON_CONTAINER,
+  /* Paints a GtkCheckButton. flags is a boolean, 1=checked, 0=not checked. */
+  MOZ_GTK_CHECKBUTTON,
+  /* Paints the label of a GtkCheckButton (focus outline) */
+  MOZ_GTK_CHECKBUTTON_LABEL,
+
+  /* Paints the container part of a GtkRadioButton. */
+  MOZ_GTK_RADIOBUTTON_CONTAINER,
+  /* Paints a GtkRadioButton. flags is a boolean, 1=checked, 0=not checked. */
+  MOZ_GTK_RADIOBUTTON,
+  /* Paints the label of a GtkRadioButton (focus outline) */
+  MOZ_GTK_RADIOBUTTON_LABEL,
+  /**
+   * Paints the button of a GtkScrollbar. flags is a GtkArrowType giving
+   * the arrow direction.
+   */
+  MOZ_GTK_SCROLLBAR_BUTTON,
+
+  /* Horizontal GtkScrollbar counterparts */
+  MOZ_GTK_SCROLLBAR_HORIZONTAL,
+  MOZ_GTK_SCROLLBAR_CONTENTS_HORIZONTAL,
+  /* Paints the trough (track) of a GtkScrollbar. */
+  MOZ_GTK_SCROLLBAR_TROUGH_HORIZONTAL,
+  /* Paints the slider (thumb) of a GtkScrollbar. */
+  MOZ_GTK_SCROLLBAR_THUMB_HORIZONTAL,
+
+  /* Vertical GtkScrollbar counterparts */
+  MOZ_GTK_SCROLLBAR_VERTICAL,
+  MOZ_GTK_SCROLLBAR_CONTENTS_VERTICAL,
+  MOZ_GTK_SCROLLBAR_TROUGH_VERTICAL,
+  MOZ_GTK_SCROLLBAR_THUMB_VERTICAL,
+
+  /* Paints a GtkScale. */
+  MOZ_GTK_SCALE_HORIZONTAL,
+  MOZ_GTK_SCALE_VERTICAL,
+  /* Paints a GtkScale trough. */
+  MOZ_GTK_SCALE_CONTENTS_HORIZONTAL,
+  MOZ_GTK_SCALE_CONTENTS_VERTICAL,
+  MOZ_GTK_SCALE_TROUGH_HORIZONTAL,
+  MOZ_GTK_SCALE_TROUGH_VERTICAL,
+  /* Paints a GtkScale thumb. */
+  MOZ_GTK_SCALE_THUMB_HORIZONTAL,
+  MOZ_GTK_SCALE_THUMB_VERTICAL,
+  /* Paints a GtkSpinButton */
+  MOZ_GTK_INNER_SPIN_BUTTON,
+  MOZ_GTK_SPINBUTTON,
+  MOZ_GTK_SPINBUTTON_UP,
+  MOZ_GTK_SPINBUTTON_DOWN,
+  MOZ_GTK_SPINBUTTON_ENTRY,
+  /* Paints the gripper of a GtkHandleBox. */
+  MOZ_GTK_GRIPPER,
+  /* Paints a GtkEntry. */
+  MOZ_GTK_ENTRY,
+  /* Paints a GtkExpander. */
+  MOZ_GTK_EXPANDER,
+  /* Paints a GtkTextView or gets the style context corresponding to the
+     root node of a GtkTextView. */
+  MOZ_GTK_TEXT_VIEW,
+  /* The "text" window or node of a GtkTextView */
+  MOZ_GTK_TEXT_VIEW_TEXT,
+  /* The "selection" node of a GtkTextView.text */
+  MOZ_GTK_TEXT_VIEW_TEXT_SELECTION,
+  /* Paints a GtkOptionMenu. */
+  MOZ_GTK_DROPDOWN,
+  /* Paints a dropdown arrow (a GtkButton containing a down GtkArrow). */
+  MOZ_GTK_DROPDOWN_ARROW,
+  /* Paints an entry in an editable option menu */
+  MOZ_GTK_DROPDOWN_ENTRY,
+
+  /* Paints the background of a GtkHandleBox. */
+  MOZ_GTK_TOOLBAR,
+  /* Paints a toolbar separator */
+  MOZ_GTK_TOOLBAR_SEPARATOR,
+  /* Paints a GtkToolTip */
+  MOZ_GTK_TOOLTIP,
+  /* Paints a GtkBox from GtkToolTip  */
+  MOZ_GTK_TOOLTIP_BOX,
+  /* Paints a GtkLabel of GtkToolTip */
+  MOZ_GTK_TOOLTIP_BOX_LABEL,
+  /* Paints a GtkFrame (e.g. a status bar panel). */
+  MOZ_GTK_FRAME,
+  /* Paints the border of a GtkFrame */
+  MOZ_GTK_FRAME_BORDER,
+  /* Paints a resize grip for a GtkTextView */
+  MOZ_GTK_RESIZER,
+  /* Paints a GtkProgressBar. */
+  MOZ_GTK_PROGRESSBAR,
+  /* Paints a trough (track) of a GtkProgressBar */
+  MOZ_GTK_PROGRESS_TROUGH,
+  /* Paints a progress chunk of a GtkProgressBar. */
+  MOZ_GTK_PROGRESS_CHUNK,
+  /* Paints a progress chunk of an indeterminated GtkProgressBar. */
+  MOZ_GTK_PROGRESS_CHUNK_INDETERMINATE,
+  /* Paints a progress chunk of a vertical indeterminated GtkProgressBar. */
+  MOZ_GTK_PROGRESS_CHUNK_VERTICAL_INDETERMINATE,
+  /* Used as root style of whole GtkNotebook widget */
+  MOZ_GTK_NOTEBOOK,
+  /* Used as root style of active GtkNotebook area which contains tabs and
+     arrows. */
+  MOZ_GTK_NOTEBOOK_HEADER,
+  /* Paints a tab of a GtkNotebook. flags is a GtkTabFlags, defined above. */
+  MOZ_GTK_TAB_TOP,
+  /* Paints a tab of a GtkNotebook. flags is a GtkTabFlags, defined above. */
+  MOZ_GTK_TAB_BOTTOM,
+  /* Paints the background and border of a GtkNotebook. */
+  MOZ_GTK_TABPANELS,
+  /* Paints a GtkArrow for a GtkNotebook. flags is a GtkArrowType. */
+  MOZ_GTK_TAB_SCROLLARROW,
+  /* Paints the expander and border of a GtkTreeView */
+  MOZ_GTK_TREEVIEW,
+  /* Paints the border of a GtkTreeView */
+  MOZ_GTK_TREEVIEW_VIEW,
+  /* Paints treeheader cells */
+  MOZ_GTK_TREE_HEADER_CELL,
+  /* Paints sort arrows in treeheader cells */
+  MOZ_GTK_TREE_HEADER_SORTARROW,
+  /* Paints an expander for a GtkTreeView */
+  MOZ_GTK_TREEVIEW_EXPANDER,
+  /* Paints the background of the menu bar. */
+  MOZ_GTK_MENUBAR,
+  /* Paints the background of menus, context menus. */
+  MOZ_GTK_MENUPOPUP,
+  /* Paints the arrow of menuitems that contain submenus */
+  MOZ_GTK_MENUARROW,
+  /* Paints an arrow in a toolbar button. flags is a GtkArrowType. */
+  MOZ_GTK_TOOLBARBUTTON_ARROW,
+  /* Paints items of menubar. */
+  MOZ_GTK_MENUBARITEM,
+  /* Paints items of popup menus. */
+  MOZ_GTK_MENUITEM,
+  /* Paints a menuitem with check indicator, or the gets the style context for
+     a menuitem that contains a checkbox. */
+  MOZ_GTK_CHECKMENUITEM,
+  /* Gets the style context for a checkbox in a check menuitem. */
+  MOZ_GTK_CHECKMENUITEM_INDICATOR,
+  MOZ_GTK_RADIOMENUITEM,
+  MOZ_GTK_RADIOMENUITEM_INDICATOR,
+  MOZ_GTK_MENUSEPARATOR,
+  /* GtkVPaned base class */
+  MOZ_GTK_SPLITTER_HORIZONTAL,
+  /* GtkHPaned base class */
+  MOZ_GTK_SPLITTER_VERTICAL,
+  /* Paints a GtkVPaned separator */
+  MOZ_GTK_SPLITTER_SEPARATOR_HORIZONTAL,
+  /* Paints a GtkHPaned separator */
+  MOZ_GTK_SPLITTER_SEPARATOR_VERTICAL,
+  /* Paints the background of a window, dialog or page. */
+  MOZ_GTK_WINDOW,
+  /* Used only as a container for MOZ_GTK_HEADER_BAR. */
+  MOZ_GTK_HEADERBAR_WINDOW,
+  /* Used only as a container for MOZ_GTK_HEADER_BAR_MAXIMIZED. */
+  MOZ_GTK_HEADERBAR_WINDOW_MAXIMIZED,
+  /* Window container for all widgets */
+  MOZ_GTK_WINDOW_CONTAINER,
+  /* Paints a GtkInfoBar, for notifications. */
+  MOZ_GTK_INFO_BAR,
+  /* Used for widget tree construction. */
+  MOZ_GTK_COMBOBOX,
+  /* Paints a GtkComboBox button widget. */
+  MOZ_GTK_COMBOBOX_BUTTON,
+  /* Paints a GtkComboBox arrow widget. */
+  MOZ_GTK_COMBOBOX_ARROW,
+  /* Paints a GtkComboBox separator widget. */
+  MOZ_GTK_COMBOBOX_SEPARATOR,
+  /* Used for widget tree construction. */
+  MOZ_GTK_COMBOBOX_ENTRY,
+  /* Paints a GtkComboBox entry widget. */
+  MOZ_GTK_COMBOBOX_ENTRY_TEXTAREA,
+  /* Paints a GtkComboBox entry button widget. */
+  MOZ_GTK_COMBOBOX_ENTRY_BUTTON,
+  /* Paints a GtkComboBox entry arrow widget. */
+  MOZ_GTK_COMBOBOX_ENTRY_ARROW,
+  /* Used for scrolled window shell. */
+  MOZ_GTK_SCROLLED_WINDOW,
+  /* Paints a GtkHeaderBar */
+  MOZ_GTK_HEADER_BAR,
+  /* Paints a GtkHeaderBar in maximized state */
+  MOZ_GTK_HEADER_BAR_MAXIMIZED,
+  /* Container for GtkHeaderBar buttons */
+  MOZ_GTK_HEADER_BAR_BUTTON_BOX,
+  /* Paints GtkHeaderBar title buttons.
+   * Keep the order here as MOZ_GTK_HEADER_BAR_BUTTON_* are processed
+   * as an array from MOZ_GTK_HEADER_BAR_BUTTON_CLOSE to the last one.
+   */
+  MOZ_GTK_HEADER_BAR_BUTTON_CLOSE,
+  MOZ_GTK_HEADER_BAR_BUTTON_MINIMIZE,
+  MOZ_GTK_HEADER_BAR_BUTTON_MAXIMIZE,
+
+  /* MOZ_GTK_HEADER_BAR_BUTTON_MAXIMIZE_RESTORE is a state of
+   * MOZ_GTK_HEADER_BAR_BUTTON_MAXIMIZE button and it's used as
+   * an icon placeholder only.
+   */
+  MOZ_GTK_HEADER_BAR_BUTTON_MAXIMIZE_RESTORE,
+
+  /* Client-side window decoration node. Available on GTK 3.20+. */
+  MOZ_GTK_WINDOW_DECORATION,
+  MOZ_GTK_WINDOW_DECORATION_SOLID,
+
+  MOZ_GTK_WIDGET_NODE_COUNT
+};
+
+/* ButtonLayout represents a GTK CSD button and whether its on the left or
+ * right side of the tab bar */
+struct ButtonLayout {
+  WidgetNodeType mType;
+  bool mAtRight;
+};
+
+/*** General library functions ***/
+/**
+ * Initializes the drawing library.  You must call this function
+ * prior to using any other functionality.
+ * returns: MOZ_GTK_SUCCESS if there were no errors
+ *          MOZ_GTK_UNSAFE_THEME if the current theme engine is known
+ *                               to crash with gtkdrawing.
+ */
+gint moz_gtk_init();
+
+/**
+ * Updates the drawing library when the theme changes.
+ */
+void moz_gtk_refresh();
+
+/**
+ * Perform cleanup of the drawing library. You should call this function
+ * when your program exits, or you no longer need the library.
+ *
+ * returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
+ */
+gint moz_gtk_shutdown();
+
+/*** Widget drawing ***/
+/**
+ * Paint a widget in the current theme.
+ * widget:    a constant giving the widget to paint
+ * drawable:  the drawable to paint to;
+ *            it's colormap must be moz_gtk_widget_get_colormap().
+ * rect:      the bounding rectangle for the widget
+ * state:     the state of the widget.  ignored for some widgets.
+ * flags:     widget-dependant flags; see the WidgetNodeType definition.
+ * direction: the text direction, to draw the widget correctly LTR and RTL.
+ */
+gint moz_gtk_widget_paint(WidgetNodeType widget, cairo_t* cr,
+                          GdkRectangle* rect, GtkWidgetState* state, gint flags,
+                          GtkTextDirection direction);
+
+/*** Widget metrics ***/
+/**
+ * Get the border size of a widget
+ * left/right:  [OUT] the widget's left/right border
+ * top/bottom:  [OUT] the widget's top/bottom border
+ * direction:   the text direction for the widget.  Callers depend on this
+ *              being used only for MOZ_GTK_DROPDOWN widgets, and cache
+ *              results for other widget types across direction values.
+ *
+ * returns:    MOZ_GTK_SUCCESS if there was no error, an error code otherwise
+ */
+gint moz_gtk_get_widget_border(WidgetNodeType widget, gint* left, gint* top,
+                               gint* right, gint* bottom,
+                               GtkTextDirection direction);
+
+/**
+ * Get the border size of a notebook tab
+ * left/right:  [OUT] the tab's left/right border
+ * top/bottom:  [OUT] the tab's top/bottom border
+ * direction:   the text direction for the widget
+ * flags:       tab-dependant flags; see the GtkTabFlags definition.
+ * widget:      tab widget
+ *
+ * returns:    MOZ_GTK_SUCCESS if there was no error, an error code otherwise
+ */
+gint moz_gtk_get_tab_border(gint* left, gint* top, gint* right, gint* bottom,
+                            GtkTextDirection direction, GtkTabFlags flags,
+                            WidgetNodeType widget);
+
+/**
+ * Get the desired size of a GtkCheckButton
+ * indicator_size:     [OUT] the indicator size
+ * indicator_spacing:  [OUT] the spacing between the indicator and its
+ *                     container
+ *
+ * returns:    MOZ_GTK_SUCCESS if there was no error, an error code otherwise
+ */
+gint moz_gtk_checkbox_get_metrics(gint* indicator_size,
+                                  gint* indicator_spacing);
+
+/**
+ * Get metrics of the toggle (radio or checkbox)
+ * isRadio:            [IN] true when requesting metrics for the radio button
+ * returns:    pointer to ToggleGTKMetrics struct
+ */
+const ToggleGTKMetrics* GetToggleMetrics(WidgetNodeType aWidgetType);
+
+/**
+ * Get the desired size of a GtkRadioButton
+ * indicator_size:     [OUT] the indicator size
+ * indicator_spacing:  [OUT] the spacing between the indicator and its
+ *                     container
+ *
+ * returns:    MOZ_GTK_SUCCESS if there was no error, an error code otherwise
+ */
+gint moz_gtk_radio_get_metrics(gint* indicator_size, gint* indicator_spacing);
+
+/** Returns the size of the focus ring for outline:auto.
+ * focus_h_width:      [OUT] the horizontal width
+ * focus_v_width:      [OUT] the vertical width
+ *
+ * returns:    MOZ_GTK_SUCCESS
+ */
+gint moz_gtk_get_focus_outline_size(gint* focus_h_width, gint* focus_v_width);
+
+/** Get the horizontal padding for the menuitem widget or checkmenuitem widget.
+ * horizontal_padding: [OUT] The left and right padding of the menuitem or
+ * checkmenuitem
+ *
+ * returns:    MOZ_GTK_SUCCESS if there was no error, an error code otherwise
+ */
+gint moz_gtk_menuitem_get_horizontal_padding(gint* horizontal_padding);
+
+gint moz_gtk_checkmenuitem_get_horizontal_padding(gint* horizontal_padding);
+
+/**
+ * Some GTK themes draw their indication for the default button outside
+ * the button (e.g. the glow in New Wave). This gets the extra space necessary.
+ *
+ * border_top:  [OUT] extra space to add above
+ * border_left:  [OUT] extra space to add to the left
+ * border_bottom:  [OUT] extra space to add underneath
+ * border_right:  [OUT] extra space to add to the right
+ *
+ * returns:   MOZ_GTK_SUCCESS if there was no error, an error code otherwise
+ */
+gint moz_gtk_button_get_default_overflow(gint* border_top, gint* border_left,
+                                         gint* border_bottom,
+                                         gint* border_right);
+
+/**
+ * Gets the minimum size of a GtkScale.
+ * orient:           [IN] the scale orientation
+ * scale_width:      [OUT] the width of the scale
+ * scale_height:     [OUT] the height of the scale
+ */
+void moz_gtk_get_scale_metrics(GtkOrientation orient, gint* scale_width,
+                               gint* scale_height);
+
+/**
+ * Get the desired size of a GtkScale thumb
+ * orient:           [IN] the scale orientation
+ * thumb_length:     [OUT] the length of the thumb
+ * thumb_height:     [OUT] the height of the thumb
+ *
+ * returns:    MOZ_GTK_SUCCESS if there was no error, an error code otherwise
+ */
+gint moz_gtk_get_scalethumb_metrics(GtkOrientation orient, gint* thumb_length,
+                                    gint* thumb_height);
+
+/**
+ * Get the metrics in GTK pixels for a scrollbar.
+ * aOrientation:     [IN] the scrollbar orientation
+ */
+const ScrollbarGTKMetrics* GetScrollbarMetrics(GtkOrientation aOrientation);
+
+/**
+ * Get the metrics in GTK pixels for a scrollbar which is active
+ * (selected by mouse pointer).
+ * aOrientation:     [IN] the scrollbar orientation
+ */
+const ScrollbarGTKMetrics* GetActiveScrollbarMetrics(
+    GtkOrientation aOrientation);
+
+/**
+ * Get the desired size of a dropdown arrow button
+ * width:   [OUT] the desired width
+ * height:  [OUT] the desired height
+ *
+ * returns:    MOZ_GTK_SUCCESS if there was no error, an error code otherwise
+ */
+gint moz_gtk_get_combo_box_entry_button_size(gint* width, gint* height);
+
+/**
+ * Get the desired size of a scroll arrow widget
+ * width:   [OUT] the desired width
+ * height:  [OUT] the desired height
+ *
+ * returns:    MOZ_GTK_SUCCESS if there was no error, an error code otherwise
+ */
+gint moz_gtk_get_tab_scroll_arrow_size(gint* width, gint* height);
+
+/**
+ * Get the desired size of an arrow in a button
+ *
+ * widgetType: [IN]  the widget for which to get the arrow size
+ * width:      [OUT] the desired width
+ * height:     [OUT] the desired height
+ */
+void moz_gtk_get_arrow_size(WidgetNodeType widgetType, gint* width,
+                            gint* height);
+
+/**
+ * Get the minimum height of a entry widget
+ * min_content_height:    [OUT] the minimum height of the content box.
+ * border_padding_height: [OUT] the size of borders and paddings.
+ */
+void moz_gtk_get_entry_min_height(gint* min_content_height,
+                                  gint* border_padding_height);
+
+/**
+ * Get the desired size of a toolbar separator
+ * size:    [OUT] the desired width
+ *
+ * returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
+ */
+gint moz_gtk_get_toolbar_separator_width(gint* size);
+
+/**
+ * Get the size of a regular GTK expander that shows/hides content
+ * size:    [OUT] the size of the GTK expander, size = width = height.
+ *
+ * returns:    MOZ_GTK_SUCCESS if there was no error, an error code otherwise
+ */
+gint moz_gtk_get_expander_size(gint* size);
+
+/**
+ * Get the size of a treeview's expander (we call them twisties)
+ * size:    [OUT] the size of the GTK expander, size = width = height.
+ *
+ * returns:    MOZ_GTK_SUCCESS if there was no error, an error code otherwise
+ */
+gint moz_gtk_get_treeview_expander_size(gint* size);
+
+/**
+ * Get the desired height of a menu separator
+ * size:    [OUT] the desired height
+ *
+ * returns: MOZ_GTK_SUCCESS if there was no error, an error code otherwise
+ */
+gint moz_gtk_get_menu_separator_height(gint* size);
+
+/**
+ * Get the desired size of a splitter
+ * orientation:   [IN]  GTK_ORIENTATION_HORIZONTAL or GTK_ORIENTATION_VERTICAL
+ * size:          [OUT] width or height of the splitter handle
+ *
+ * returns:    MOZ_GTK_SUCCESS if there was no error, an error code otherwise
+ */
+gint moz_gtk_splitter_get_metrics(gint orientation, gint* size);
+
+/**
+ * Get the YTHICKNESS of a tab (notebook extension).
+ */
+gint moz_gtk_get_tab_thickness(WidgetNodeType aNodeType);
+
+/**
+ * Get ToolbarButtonGTKMetrics for recent theme.
+ */
+const ToolbarButtonGTKMetrics* GetToolbarButtonMetrics(
+    WidgetNodeType aAppearance);
+
+/**
+ * Get toolbar button layout.
+ * aButtonLayout:  [OUT] An array which will be filled by ButtonLayout
+ *                       references to visible titlebar buttons. Must contain at
+ *                       least TOOLBAR_BUTTONS entries if non-empty.
+ * aReversedButtonsPlacement: [OUT] True if the buttons are placed in opposite
+ *                                  titlebar corner.
+ *
+ * returns:    Number of returned entries at aButtonLayout.
+ */
+size_t GetGtkHeaderBarButtonLayout(mozilla::Span<ButtonLayout>,
+                                   bool* aReversedButtonsPlacement);
+
+/**
+ * Get size of CSD window extents.
+ *
+ * aIsPopup: [IN] Get decoration size for popup or toplevel window.
+ *
+ * returns: Calculated (or estimated) decoration size of given aGtkWindow.
+ */
+GtkBorder GetCSDDecorationSize(bool aIsPopup);
+
+#endif