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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /widget/gtk/WidgetStyleCache.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'widget/gtk/WidgetStyleCache.cpp')
-rw-r--r--widget/gtk/WidgetStyleCache.cpp1162
1 files changed, 1162 insertions, 0 deletions
diff --git a/widget/gtk/WidgetStyleCache.cpp b/widget/gtk/WidgetStyleCache.cpp
new file mode 100644
index 000000000..fd099681f
--- /dev/null
+++ b/widget/gtk/WidgetStyleCache.cpp
@@ -0,0 +1,1162 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#include <dlfcn.h>
+#include <gtk/gtk.h>
+#include "WidgetStyleCache.h"
+#include "gtkdrawing.h"
+
+#define STATE_FLAG_DIR_LTR (1U << 7)
+#define STATE_FLAG_DIR_RTL (1U << 8)
+#if GTK_CHECK_VERSION(3,8,0)
+static_assert(GTK_STATE_FLAG_DIR_LTR == STATE_FLAG_DIR_LTR &&
+ GTK_STATE_FLAG_DIR_RTL == STATE_FLAG_DIR_RTL,
+ "incorrect direction state flags");
+#endif
+
+static GtkWidget* sWidgetStorage[MOZ_GTK_WIDGET_NODE_COUNT];
+static GtkStyleContext* sStyleStorage[MOZ_GTK_WIDGET_NODE_COUNT];
+
+static bool sStyleContextNeedsRestore;
+#ifdef DEBUG
+static GtkStyleContext* sCurrentStyleContext;
+#endif
+static GtkStyleContext*
+GetWidgetRootStyle(WidgetNodeType aNodeType);
+static GtkStyleContext*
+GetCssNodeStyleInternal(WidgetNodeType aNodeType);
+
+static GtkWidget*
+CreateWindowWidget()
+{
+ GtkWidget *widget = gtk_window_new(GTK_WINDOW_POPUP);
+ gtk_widget_set_name(widget, "MozillaGtkWidget");
+ return widget;
+}
+
+static GtkWidget*
+CreateWindowContainerWidget()
+{
+ GtkWidget *widget = gtk_fixed_new();
+ gtk_container_add(GTK_CONTAINER(GetWidget(MOZ_GTK_WINDOW)), widget);
+ return widget;
+}
+
+static void
+AddToWindowContainer(GtkWidget* widget)
+{
+ gtk_container_add(GTK_CONTAINER(GetWidget(MOZ_GTK_WINDOW_CONTAINER)), widget);
+}
+
+static GtkWidget*
+CreateScrollbarWidget(WidgetNodeType aWidgetType, GtkOrientation aOrientation)
+{
+ GtkWidget* widget = gtk_scrollbar_new(aOrientation, nullptr);
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateCheckboxWidget()
+{
+ GtkWidget* widget = gtk_check_button_new_with_label("M");
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateRadiobuttonWidget()
+{
+ GtkWidget* widget = gtk_radio_button_new_with_label(nullptr, "M");
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateMenuBarWidget()
+{
+ GtkWidget* widget = gtk_menu_bar_new();
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateMenuPopupWidget()
+{
+ GtkWidget* widget = gtk_menu_new();
+ gtk_menu_attach_to_widget(GTK_MENU(widget), GetWidget(MOZ_GTK_WINDOW),
+ nullptr);
+ return widget;
+}
+
+static GtkWidget*
+CreateProgressWidget()
+{
+ GtkWidget* widget = gtk_progress_bar_new();
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateTooltipWidget()
+{
+ MOZ_ASSERT(gtk_check_version(3, 20, 0) != nullptr,
+ "CreateTooltipWidget should be used for Gtk < 3.20 only.");
+ GtkWidget* widget = CreateWindowWidget();
+ GtkStyleContext* style = gtk_widget_get_style_context(widget);
+ gtk_style_context_add_class(style, GTK_STYLE_CLASS_TOOLTIP);
+ return widget;
+}
+
+static GtkWidget*
+CreateExpanderWidget()
+{
+ GtkWidget* widget = gtk_expander_new("M");
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateFrameWidget()
+{
+ GtkWidget* widget = gtk_frame_new(nullptr);
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateGripperWidget()
+{
+ GtkWidget* widget = gtk_handle_box_new();
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateToolbarWidget()
+{
+ GtkWidget* widget = gtk_toolbar_new();
+ gtk_container_add(GTK_CONTAINER(GetWidget(MOZ_GTK_GRIPPER)), widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateToolbarSeparatorWidget()
+{
+ GtkWidget* widget = GTK_WIDGET(gtk_separator_tool_item_new());
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateInfoBarWidget()
+{
+ GtkWidget* widget = gtk_info_bar_new();
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateButtonWidget()
+{
+ GtkWidget* widget = gtk_button_new_with_label("M");
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateToggleButtonWidget()
+{
+ GtkWidget* widget = gtk_toggle_button_new();
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateButtonArrowWidget()
+{
+ GtkWidget* widget = gtk_arrow_new(GTK_ARROW_DOWN, GTK_SHADOW_OUT);
+ gtk_container_add(GTK_CONTAINER(GetWidget(MOZ_GTK_TOGGLE_BUTTON)), widget);
+ gtk_widget_show(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateSpinWidget()
+{
+ GtkWidget* widget = gtk_spin_button_new(nullptr, 1, 0);
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateEntryWidget()
+{
+ GtkWidget* widget = gtk_entry_new();
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateComboBoxWidget()
+{
+ GtkWidget* widget = gtk_combo_box_new();
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+typedef struct
+{
+ GType type;
+ GtkWidget** widget;
+} GtkInnerWidgetInfo;
+
+static void
+GetInnerWidget(GtkWidget* widget, gpointer client_data)
+{
+ auto info = static_cast<GtkInnerWidgetInfo*>(client_data);
+
+ if (G_TYPE_CHECK_INSTANCE_TYPE(widget, info->type)) {
+ *info->widget = widget;
+ }
+}
+
+static GtkWidget*
+CreateComboBoxButtonWidget()
+{
+ GtkWidget* comboBox = GetWidget(MOZ_GTK_COMBOBOX);
+ GtkWidget* comboBoxButton = nullptr;
+
+ /* Get its inner Button */
+ GtkInnerWidgetInfo info = { GTK_TYPE_TOGGLE_BUTTON,
+ &comboBoxButton };
+ gtk_container_forall(GTK_CONTAINER(comboBox),
+ GetInnerWidget, &info);
+
+ if (!comboBoxButton) {
+ /* Shouldn't be reached with current internal gtk implementation; we
+ * use a generic toggle button as last resort fallback to avoid
+ * crashing. */
+ comboBoxButton = GetWidget(MOZ_GTK_TOGGLE_BUTTON);
+ } else {
+ /* We need to have pointers to the inner widgets (button, separator, arrow)
+ * of the ComboBox to get the correct rendering from theme engines which
+ * special cases their look. Since the inner layout can change, we ask GTK
+ * to NULL our pointers when they are about to become invalid because the
+ * corresponding widgets don't exist anymore. It's the role of
+ * g_object_add_weak_pointer().
+ * Note that if we don't find the inner widgets (which shouldn't happen), we
+ * fallback to use generic "non-inner" widgets, and they don't need that kind
+ * of weak pointer since they are explicit children of gProtoLayout and as
+ * such GTK holds a strong reference to them. */
+ g_object_add_weak_pointer(G_OBJECT(comboBoxButton),
+ reinterpret_cast<gpointer *>(sWidgetStorage) +
+ MOZ_GTK_COMBOBOX_BUTTON);
+ }
+
+ return comboBoxButton;
+}
+
+static GtkWidget*
+CreateComboBoxArrowWidget()
+{
+ GtkWidget* comboBoxButton = GetWidget(MOZ_GTK_COMBOBOX_BUTTON);
+ GtkWidget* comboBoxArrow = nullptr;
+
+ /* Get the widgets inside the Button */
+ GtkWidget* buttonChild = gtk_bin_get_child(GTK_BIN(comboBoxButton));
+ if (GTK_IS_BOX(buttonChild)) {
+ /* appears-as-list = FALSE, cell-view = TRUE; the button
+ * contains an hbox. This hbox is there because the ComboBox
+ * needs to place a cell renderer, a separator, and an arrow in
+ * the button when appears-as-list is FALSE. */
+ GtkInnerWidgetInfo info = { GTK_TYPE_ARROW,
+ &comboBoxArrow };
+ gtk_container_forall(GTK_CONTAINER(buttonChild),
+ GetInnerWidget, &info);
+ } else if (GTK_IS_ARROW(buttonChild)) {
+ /* appears-as-list = TRUE, or cell-view = FALSE;
+ * the button only contains an arrow */
+ comboBoxArrow = buttonChild;
+ }
+
+ if (!comboBoxArrow) {
+ /* Shouldn't be reached with current internal gtk implementation;
+ * we gButtonArrowWidget as last resort fallback to avoid
+ * crashing. */
+ comboBoxArrow = GetWidget(MOZ_GTK_BUTTON_ARROW);
+ } else {
+ g_object_add_weak_pointer(G_OBJECT(comboBoxArrow),
+ reinterpret_cast<gpointer *>(sWidgetStorage) +
+ MOZ_GTK_COMBOBOX_ARROW);
+ }
+
+ return comboBoxArrow;
+}
+
+static GtkWidget*
+CreateComboBoxSeparatorWidget()
+{
+ // Ensure to search for separator only once as it can fail
+ // TODO - it won't initialize after ResetWidgetCache() call
+ static bool isMissingSeparator = false;
+ if (isMissingSeparator)
+ return nullptr;
+
+ /* Get the widgets inside the Button */
+ GtkWidget* comboBoxSeparator = nullptr;
+ GtkWidget* buttonChild =
+ gtk_bin_get_child(GTK_BIN(GetWidget(MOZ_GTK_COMBOBOX_BUTTON)));
+ if (GTK_IS_BOX(buttonChild)) {
+ /* appears-as-list = FALSE, cell-view = TRUE; the button
+ * contains an hbox. This hbox is there because the ComboBox
+ * needs to place a cell renderer, a separator, and an arrow in
+ * the button when appears-as-list is FALSE. */
+ GtkInnerWidgetInfo info = { GTK_TYPE_SEPARATOR,
+ &comboBoxSeparator };
+ gtk_container_forall(GTK_CONTAINER(buttonChild),
+ GetInnerWidget, &info);
+ }
+
+ if (comboBoxSeparator) {
+ g_object_add_weak_pointer(G_OBJECT(comboBoxSeparator),
+ reinterpret_cast<gpointer *>(sWidgetStorage) +
+ MOZ_GTK_COMBOBOX_SEPARATOR);
+ } else {
+ /* comboBoxSeparator may be NULL
+ * when "appears-as-list" = TRUE or "cell-view" = FALSE;
+ * if there is no separator, then we just won't paint it. */
+ isMissingSeparator = true;
+ }
+
+ return comboBoxSeparator;
+}
+
+static GtkWidget*
+CreateComboBoxEntryWidget()
+{
+ GtkWidget* widget = gtk_combo_box_new_with_entry();
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateComboBoxEntryTextareaWidget()
+{
+ GtkWidget* comboBoxTextarea = nullptr;
+
+ /* Get its inner Entry and Button */
+ GtkInnerWidgetInfo info = { GTK_TYPE_ENTRY,
+ &comboBoxTextarea };
+ gtk_container_forall(GTK_CONTAINER(GetWidget(MOZ_GTK_COMBOBOX_ENTRY)),
+ GetInnerWidget, &info);
+
+ if (!comboBoxTextarea) {
+ comboBoxTextarea = GetWidget(MOZ_GTK_ENTRY);
+ } else {
+ g_object_add_weak_pointer(G_OBJECT(comboBoxTextarea),
+ reinterpret_cast<gpointer *>(sWidgetStorage) +
+ MOZ_GTK_COMBOBOX_ENTRY);
+ }
+
+ return comboBoxTextarea;
+}
+
+static GtkWidget*
+CreateComboBoxEntryButtonWidget()
+{
+ GtkWidget* comboBoxButton = nullptr;
+
+ /* Get its inner Entry and Button */
+ GtkInnerWidgetInfo info = { GTK_TYPE_TOGGLE_BUTTON,
+ &comboBoxButton };
+ gtk_container_forall(GTK_CONTAINER(GetWidget(MOZ_GTK_COMBOBOX_ENTRY)),
+ GetInnerWidget, &info);
+
+ if (!comboBoxButton) {
+ comboBoxButton = GetWidget(MOZ_GTK_TOGGLE_BUTTON);
+ } else {
+ g_object_add_weak_pointer(G_OBJECT(comboBoxButton),
+ reinterpret_cast<gpointer *>(sWidgetStorage) +
+ MOZ_GTK_COMBOBOX_ENTRY_BUTTON);
+ }
+
+ return comboBoxButton;
+}
+
+static GtkWidget*
+CreateComboBoxEntryArrowWidget()
+{
+ GtkWidget* comboBoxArrow = nullptr;
+
+ /* Get the Arrow inside the Button */
+ GtkWidget* buttonChild =
+ gtk_bin_get_child(GTK_BIN(GetWidget(MOZ_GTK_COMBOBOX_ENTRY_BUTTON)));
+
+ if (GTK_IS_BOX(buttonChild)) {
+ /* appears-as-list = FALSE, cell-view = TRUE; the button
+ * contains an hbox. This hbox is there because the ComboBox
+ * needs to place a cell renderer, a separator, and an arrow in
+ * the button when appears-as-list is FALSE. */
+ GtkInnerWidgetInfo info = { GTK_TYPE_ARROW,
+ &comboBoxArrow };
+ gtk_container_forall(GTK_CONTAINER(buttonChild),
+ GetInnerWidget, &info);
+ } else if (GTK_IS_ARROW(buttonChild)) {
+ /* appears-as-list = TRUE, or cell-view = FALSE;
+ * the button only contains an arrow */
+ comboBoxArrow = buttonChild;
+ }
+
+ if (!comboBoxArrow) {
+ /* Shouldn't be reached with current internal gtk implementation;
+ * we gButtonArrowWidget as last resort fallback to avoid
+ * crashing. */
+ comboBoxArrow = GetWidget(MOZ_GTK_BUTTON_ARROW);
+ } else {
+ g_object_add_weak_pointer(G_OBJECT(comboBoxArrow),
+ reinterpret_cast<gpointer *>(sWidgetStorage) +
+ MOZ_GTK_COMBOBOX_ENTRY_ARROW);
+ }
+
+ return comboBoxArrow;
+}
+
+static GtkWidget*
+CreateScrolledWindowWidget()
+{
+ GtkWidget* widget = gtk_scrolled_window_new(nullptr, nullptr);
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateTextViewWidget()
+{
+ GtkWidget* widget = gtk_text_view_new();
+ gtk_container_add(GTK_CONTAINER(GetWidget(MOZ_GTK_SCROLLED_WINDOW)),
+ widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateMenuSeparatorWidget()
+{
+ GtkWidget* widget = gtk_separator_menu_item_new();
+ gtk_menu_shell_append(GTK_MENU_SHELL(GetWidget(MOZ_GTK_MENUPOPUP)),
+ widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateTreeViewWidget()
+{
+ GtkWidget* widget = gtk_tree_view_new();
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateTreeHeaderCellWidget()
+{
+ /*
+ * Some GTK engines paint the first and last cell
+ * of a TreeView header with a highlight.
+ * Since we do not know where our widget will be relative
+ * to the other buttons in the TreeView header, we must
+ * paint it as a button that is between two others,
+ * thus ensuring it is neither the first or last button
+ * in the header.
+ * GTK doesn't give us a way to do this explicitly,
+ * so we must paint with a button that is between two
+ * others.
+ */
+ GtkTreeViewColumn* firstTreeViewColumn;
+ GtkTreeViewColumn* middleTreeViewColumn;
+ GtkTreeViewColumn* lastTreeViewColumn;
+
+ GtkWidget *treeView = GetWidget(MOZ_GTK_TREEVIEW);
+
+ /* Create and append our three columns */
+ firstTreeViewColumn = gtk_tree_view_column_new();
+ gtk_tree_view_column_set_title(firstTreeViewColumn, "M");
+ gtk_tree_view_append_column(GTK_TREE_VIEW(treeView),
+ firstTreeViewColumn);
+
+ middleTreeViewColumn = gtk_tree_view_column_new();
+ gtk_tree_view_column_set_title(middleTreeViewColumn, "M");
+ gtk_tree_view_append_column(GTK_TREE_VIEW(treeView),
+ middleTreeViewColumn);
+
+ lastTreeViewColumn = gtk_tree_view_column_new();
+ gtk_tree_view_column_set_title(lastTreeViewColumn, "M");
+ gtk_tree_view_append_column(GTK_TREE_VIEW(treeView),
+ lastTreeViewColumn);
+
+ /* Use the middle column's header for our button */
+ return gtk_tree_view_column_get_button(middleTreeViewColumn);
+}
+
+static GtkWidget*
+CreateTreeHeaderSortArrowWidget()
+{
+ /* TODO, but it can't be NULL */
+ GtkWidget* widget = gtk_button_new();
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateHPanedWidget()
+{
+ GtkWidget* widget = gtk_paned_new(GTK_ORIENTATION_HORIZONTAL);
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateVPanedWidget()
+{
+ GtkWidget* widget = gtk_paned_new(GTK_ORIENTATION_VERTICAL);
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateScaleWidget(GtkOrientation aOrientation)
+{
+ GtkWidget* widget = gtk_scale_new(aOrientation, nullptr);
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateNotebookWidget()
+{
+ GtkWidget* widget = gtk_notebook_new();
+ AddToWindowContainer(widget);
+ return widget;
+}
+
+static GtkWidget*
+CreateWidget(WidgetNodeType aWidgetType)
+{
+ switch (aWidgetType) {
+ case MOZ_GTK_WINDOW:
+ return CreateWindowWidget();
+ case MOZ_GTK_WINDOW_CONTAINER:
+ return CreateWindowContainerWidget();
+ case MOZ_GTK_CHECKBUTTON_CONTAINER:
+ return CreateCheckboxWidget();
+ case MOZ_GTK_PROGRESSBAR:
+ return CreateProgressWidget();
+ case MOZ_GTK_RADIOBUTTON_CONTAINER:
+ return CreateRadiobuttonWidget();
+ case MOZ_GTK_SCROLLBAR_HORIZONTAL:
+ return CreateScrollbarWidget(aWidgetType,
+ GTK_ORIENTATION_HORIZONTAL);
+ case MOZ_GTK_SCROLLBAR_VERTICAL:
+ return CreateScrollbarWidget(aWidgetType,
+ GTK_ORIENTATION_VERTICAL);
+ case MOZ_GTK_MENUBAR:
+ return CreateMenuBarWidget();
+ case MOZ_GTK_MENUPOPUP:
+ return CreateMenuPopupWidget();
+ case MOZ_GTK_MENUSEPARATOR:
+ return CreateMenuSeparatorWidget();
+ case MOZ_GTK_EXPANDER:
+ return CreateExpanderWidget();
+ case MOZ_GTK_FRAME:
+ return CreateFrameWidget();
+ case MOZ_GTK_GRIPPER:
+ return CreateGripperWidget();
+ case MOZ_GTK_TOOLBAR:
+ return CreateToolbarWidget();
+ case MOZ_GTK_TOOLBAR_SEPARATOR:
+ return CreateToolbarSeparatorWidget();
+ case MOZ_GTK_INFO_BAR:
+ return CreateInfoBarWidget();
+ case MOZ_GTK_SPINBUTTON:
+ return CreateSpinWidget();
+ case MOZ_GTK_BUTTON:
+ return CreateButtonWidget();
+ case MOZ_GTK_TOGGLE_BUTTON:
+ return CreateToggleButtonWidget();
+ case MOZ_GTK_BUTTON_ARROW:
+ return CreateButtonArrowWidget();
+ case MOZ_GTK_ENTRY:
+ return CreateEntryWidget();
+ case MOZ_GTK_SCROLLED_WINDOW:
+ return CreateScrolledWindowWidget();
+ case MOZ_GTK_TEXT_VIEW:
+ return CreateTextViewWidget();
+ case MOZ_GTK_TREEVIEW:
+ return CreateTreeViewWidget();
+ case MOZ_GTK_TREE_HEADER_CELL:
+ return CreateTreeHeaderCellWidget();
+ case MOZ_GTK_TREE_HEADER_SORTARROW:
+ return CreateTreeHeaderSortArrowWidget();
+ case MOZ_GTK_SPLITTER_HORIZONTAL:
+ return CreateHPanedWidget();
+ case MOZ_GTK_SPLITTER_VERTICAL:
+ return CreateVPanedWidget();
+ case MOZ_GTK_SCALE_HORIZONTAL:
+ return CreateScaleWidget(GTK_ORIENTATION_HORIZONTAL);
+ case MOZ_GTK_SCALE_VERTICAL:
+ return CreateScaleWidget(GTK_ORIENTATION_VERTICAL);
+ case MOZ_GTK_NOTEBOOK:
+ return CreateNotebookWidget();
+ case MOZ_GTK_COMBOBOX:
+ return CreateComboBoxWidget();
+ case MOZ_GTK_COMBOBOX_BUTTON:
+ return CreateComboBoxButtonWidget();
+ case MOZ_GTK_COMBOBOX_ARROW:
+ return CreateComboBoxArrowWidget();
+ case MOZ_GTK_COMBOBOX_SEPARATOR:
+ return CreateComboBoxSeparatorWidget();
+ case MOZ_GTK_COMBOBOX_ENTRY:
+ return CreateComboBoxEntryWidget();
+ case MOZ_GTK_COMBOBOX_ENTRY_TEXTAREA:
+ return CreateComboBoxEntryTextareaWidget();
+ case MOZ_GTK_COMBOBOX_ENTRY_BUTTON:
+ return CreateComboBoxEntryButtonWidget();
+ case MOZ_GTK_COMBOBOX_ENTRY_ARROW:
+ return CreateComboBoxEntryArrowWidget();
+ default:
+ /* Not implemented */
+ return nullptr;
+ }
+}
+
+GtkWidget*
+GetWidget(WidgetNodeType aWidgetType)
+{
+ GtkWidget* widget = sWidgetStorage[aWidgetType];
+ if (!widget) {
+ widget = CreateWidget(aWidgetType);
+ sWidgetStorage[aWidgetType] = widget;
+ }
+ return widget;
+}
+
+GtkStyleContext*
+CreateStyleForWidget(GtkWidget* aWidget, GtkStyleContext* aParentStyle)
+{
+ static auto sGtkWidgetClassGetCSSName =
+ reinterpret_cast<const char* (*)(GtkWidgetClass*)>
+ (dlsym(RTLD_DEFAULT, "gtk_widget_class_get_css_name"));
+
+ GtkWidgetClass *widgetClass = GTK_WIDGET_GET_CLASS(aWidget);
+ const gchar* name = sGtkWidgetClassGetCSSName ?
+ sGtkWidgetClassGetCSSName(widgetClass) : nullptr;
+
+ GtkStyleContext *context =
+ CreateCSSNode(name, aParentStyle, G_TYPE_FROM_CLASS(widgetClass));
+
+ // Classes are stored on the style context instead of the path so that any
+ // future gtk_style_context_save() will inherit classes on the head CSS
+ // node, in the same way as happens when called on a style context owned by
+ // a widget.
+ //
+ // Classes can be stored on a GtkCssNodeDeclaration and/or the path.
+ // gtk_style_context_save() reuses the GtkCssNodeDeclaration, and appends a
+ // new object to the path, without copying the classes from the old path
+ // head. The new head picks up classes from the GtkCssNodeDeclaration, but
+ // not the path. GtkWidgets store their classes on the
+ // GtkCssNodeDeclaration, so make sure to add classes there.
+ //
+ // Picking up classes from the style context also means that
+ // https://bugzilla.gnome.org/show_bug.cgi?id=767312, which can stop
+ // gtk_widget_path_append_for_widget() from finding classes in GTK 3.20,
+ // is not a problem.
+ GtkStyleContext* widgetStyle = gtk_widget_get_style_context(aWidget);
+ GList* classes = gtk_style_context_list_classes(widgetStyle);
+ for (GList* link = classes; link; link = link->next) {
+ gtk_style_context_add_class(context, static_cast<gchar*>(link->data));
+ }
+ g_list_free(classes);
+
+ // Release any floating reference on aWidget.
+ g_object_ref_sink(aWidget);
+ g_object_unref(aWidget);
+
+ return context;
+}
+
+static GtkStyleContext*
+CreateStyleForWidget(GtkWidget* aWidget, WidgetNodeType aParentType)
+{
+ return CreateStyleForWidget(aWidget, GetWidgetRootStyle(aParentType));
+}
+
+GtkStyleContext*
+CreateCSSNode(const char* aName, GtkStyleContext* aParentStyle, GType aType)
+{
+ static auto sGtkWidgetPathIterSetObjectName =
+ reinterpret_cast<void (*)(GtkWidgetPath *, gint, const char *)>
+ (dlsym(RTLD_DEFAULT, "gtk_widget_path_iter_set_object_name"));
+
+ GtkWidgetPath* path;
+ if (aParentStyle) {
+ path = gtk_widget_path_copy(gtk_style_context_get_path(aParentStyle));
+ // Copy classes from the parent style context to its corresponding node in
+ // the path, because GTK will only match against ancestor classes if they
+ // are on the path.
+ GList* classes = gtk_style_context_list_classes(aParentStyle);
+ for (GList* link = classes; link; link = link->next) {
+ gtk_widget_path_iter_add_class(path, -1, static_cast<gchar*>(link->data));
+ }
+ g_list_free(classes);
+ } else {
+ path = gtk_widget_path_new();
+ }
+
+ gtk_widget_path_append_type(path, aType);
+
+ if (sGtkWidgetPathIterSetObjectName) {
+ (*sGtkWidgetPathIterSetObjectName)(path, -1, aName);
+ }
+
+ GtkStyleContext *context = gtk_style_context_new();
+ gtk_style_context_set_path(context, path);
+ gtk_style_context_set_parent(context, aParentStyle);
+ gtk_widget_path_unref(path);
+
+ return context;
+}
+
+// Return a style context matching that of the root CSS node of a widget.
+// This is used by all GTK versions.
+static GtkStyleContext*
+GetWidgetRootStyle(WidgetNodeType aNodeType)
+{
+ GtkStyleContext* style = sStyleStorage[aNodeType];
+ if (style)
+ return style;
+
+ switch (aNodeType) {
+ case MOZ_GTK_MENUBARITEM:
+ style = CreateStyleForWidget(gtk_menu_item_new(), MOZ_GTK_MENUBAR);
+ break;
+ case MOZ_GTK_MENUITEM:
+ style = CreateStyleForWidget(gtk_menu_item_new(), MOZ_GTK_MENUPOPUP);
+ break;
+ case MOZ_GTK_IMAGEMENUITEM:
+ style = CreateStyleForWidget(gtk_image_menu_item_new(), MOZ_GTK_MENUPOPUP);
+ break;
+ case MOZ_GTK_CHECKMENUITEM_CONTAINER:
+ style = CreateStyleForWidget(gtk_check_menu_item_new(), MOZ_GTK_MENUPOPUP);
+ break;
+ case MOZ_GTK_RADIOMENUITEM_CONTAINER:
+ style = CreateStyleForWidget(gtk_radio_menu_item_new(nullptr),
+ MOZ_GTK_MENUPOPUP);
+ break;
+ default:
+ GtkWidget* widget = GetWidget(aNodeType);
+ MOZ_ASSERT(widget);
+ return gtk_widget_get_style_context(widget);
+ }
+
+ MOZ_ASSERT(style);
+ sStyleStorage[aNodeType] = style;
+ return style;
+}
+
+static GtkStyleContext*
+CreateChildCSSNode(const char* aName, WidgetNodeType aParentNodeType)
+{
+ return CreateCSSNode(aName, GetCssNodeStyleInternal(aParentNodeType));
+}
+
+static GtkStyleContext*
+GetWidgetStyleWithClass(WidgetNodeType aWidgetType, const gchar* aStyleClass)
+{
+ GtkStyleContext* style = GetWidgetRootStyle(aWidgetType);
+ gtk_style_context_save(style);
+ MOZ_ASSERT(!sStyleContextNeedsRestore);
+ sStyleContextNeedsRestore = true;
+ gtk_style_context_add_class(style, aStyleClass);
+ return style;
+}
+
+/* GetCssNodeStyleInternal is used by Gtk >= 3.20 */
+static GtkStyleContext*
+GetCssNodeStyleInternal(WidgetNodeType aNodeType)
+{
+ GtkStyleContext* style = sStyleStorage[aNodeType];
+ if (style)
+ return style;
+
+ switch (aNodeType) {
+ case MOZ_GTK_SCROLLBAR_CONTENTS_HORIZONTAL:
+ style = CreateChildCSSNode("contents",
+ MOZ_GTK_SCROLLBAR_HORIZONTAL);
+ break;
+ case MOZ_GTK_SCROLLBAR_TROUGH_HORIZONTAL:
+ style = CreateChildCSSNode(GTK_STYLE_CLASS_TROUGH,
+ MOZ_GTK_SCROLLBAR_CONTENTS_HORIZONTAL);
+ break;
+ case MOZ_GTK_SCROLLBAR_THUMB_HORIZONTAL:
+ style = CreateChildCSSNode(GTK_STYLE_CLASS_SLIDER,
+ MOZ_GTK_SCROLLBAR_TROUGH_HORIZONTAL);
+ break;
+ case MOZ_GTK_SCROLLBAR_CONTENTS_VERTICAL:
+ style = CreateChildCSSNode("contents",
+ MOZ_GTK_SCROLLBAR_VERTICAL);
+ break;
+ case MOZ_GTK_SCROLLBAR_TROUGH_VERTICAL:
+ style = CreateChildCSSNode(GTK_STYLE_CLASS_TROUGH,
+ MOZ_GTK_SCROLLBAR_CONTENTS_VERTICAL);
+ break;
+ case MOZ_GTK_SCROLLBAR_THUMB_VERTICAL:
+ style = CreateChildCSSNode(GTK_STYLE_CLASS_SLIDER,
+ MOZ_GTK_SCROLLBAR_TROUGH_VERTICAL);
+ break;
+ case MOZ_GTK_SCROLLBAR_BUTTON:
+ style = CreateChildCSSNode(GTK_STYLE_CLASS_BUTTON,
+ MOZ_GTK_SCROLLBAR_CONTENTS_VERTICAL);
+ break;
+ case MOZ_GTK_RADIOBUTTON:
+ style = CreateChildCSSNode(GTK_STYLE_CLASS_RADIO,
+ MOZ_GTK_RADIOBUTTON_CONTAINER);
+ break;
+ case MOZ_GTK_CHECKBUTTON:
+ style = CreateChildCSSNode(GTK_STYLE_CLASS_CHECK,
+ MOZ_GTK_CHECKBUTTON_CONTAINER);
+ break;
+ case MOZ_GTK_RADIOMENUITEM:
+ style = CreateChildCSSNode(GTK_STYLE_CLASS_RADIO,
+ MOZ_GTK_RADIOMENUITEM_CONTAINER);
+ break;
+ case MOZ_GTK_CHECKMENUITEM:
+ style = CreateChildCSSNode(GTK_STYLE_CLASS_CHECK,
+ MOZ_GTK_CHECKMENUITEM_CONTAINER);
+ break;
+ case MOZ_GTK_PROGRESS_TROUGH:
+ /* Progress bar background (trough) */
+ style = CreateChildCSSNode(GTK_STYLE_CLASS_TROUGH,
+ MOZ_GTK_PROGRESSBAR);
+ break;
+ case MOZ_GTK_PROGRESS_CHUNK:
+ style = CreateChildCSSNode("progress",
+ MOZ_GTK_PROGRESS_TROUGH);
+ break;
+ case MOZ_GTK_TOOLTIP:
+ // We create this from the path because GtkTooltipWindow is not public.
+ style = CreateCSSNode("tooltip", nullptr, GTK_TYPE_TOOLTIP);
+ gtk_style_context_add_class(style, GTK_STYLE_CLASS_BACKGROUND);
+ break;
+ case MOZ_GTK_GRIPPER:
+ // TODO - create from CSS node
+ return GetWidgetStyleWithClass(MOZ_GTK_GRIPPER,
+ GTK_STYLE_CLASS_GRIP);
+ case MOZ_GTK_INFO_BAR:
+ // TODO - create from CSS node
+ return GetWidgetStyleWithClass(MOZ_GTK_INFO_BAR,
+ GTK_STYLE_CLASS_INFO);
+ case MOZ_GTK_SPINBUTTON_ENTRY:
+ // TODO - create from CSS node
+ return GetWidgetStyleWithClass(MOZ_GTK_SPINBUTTON,
+ GTK_STYLE_CLASS_ENTRY);
+ case MOZ_GTK_SCROLLED_WINDOW:
+ // TODO - create from CSS node
+ return GetWidgetStyleWithClass(MOZ_GTK_SCROLLED_WINDOW,
+ GTK_STYLE_CLASS_FRAME);
+ case MOZ_GTK_TEXT_VIEW:
+ // TODO - create from CSS node
+ return GetWidgetStyleWithClass(MOZ_GTK_TEXT_VIEW,
+ GTK_STYLE_CLASS_VIEW);
+ case MOZ_GTK_FRAME_BORDER:
+ style = CreateChildCSSNode("border", MOZ_GTK_FRAME);
+ break;
+ case MOZ_GTK_TREEVIEW_VIEW:
+ // TODO - create from CSS node
+ return GetWidgetStyleWithClass(MOZ_GTK_TREEVIEW,
+ GTK_STYLE_CLASS_VIEW);
+ case MOZ_GTK_TREEVIEW_EXPANDER:
+ // TODO - create from CSS node
+ return GetWidgetStyleWithClass(MOZ_GTK_TREEVIEW,
+ GTK_STYLE_CLASS_EXPANDER);
+ case MOZ_GTK_SPLITTER_SEPARATOR_HORIZONTAL:
+ style = CreateChildCSSNode("separator",
+ MOZ_GTK_SPLITTER_HORIZONTAL);
+ break;
+ case MOZ_GTK_SPLITTER_SEPARATOR_VERTICAL:
+ style = CreateChildCSSNode("separator",
+ MOZ_GTK_SPLITTER_VERTICAL);
+ break;
+ case MOZ_GTK_SCALE_CONTENTS_HORIZONTAL:
+ style = CreateChildCSSNode("contents",
+ MOZ_GTK_SCALE_HORIZONTAL);
+ break;
+ case MOZ_GTK_SCALE_CONTENTS_VERTICAL:
+ style = CreateChildCSSNode("contents",
+ MOZ_GTK_SCALE_VERTICAL);
+ break;
+ case MOZ_GTK_SCALE_TROUGH_HORIZONTAL:
+ style = CreateChildCSSNode(GTK_STYLE_CLASS_TROUGH,
+ MOZ_GTK_SCALE_CONTENTS_HORIZONTAL);
+ break;
+ case MOZ_GTK_SCALE_TROUGH_VERTICAL:
+ style = CreateChildCSSNode(GTK_STYLE_CLASS_TROUGH,
+ MOZ_GTK_SCALE_CONTENTS_VERTICAL);
+ break;
+ case MOZ_GTK_SCALE_THUMB_HORIZONTAL:
+ style = CreateChildCSSNode(GTK_STYLE_CLASS_SLIDER,
+ MOZ_GTK_SCALE_TROUGH_HORIZONTAL);
+ break;
+ case MOZ_GTK_SCALE_THUMB_VERTICAL:
+ style = CreateChildCSSNode(GTK_STYLE_CLASS_SLIDER,
+ MOZ_GTK_SCALE_TROUGH_VERTICAL);
+ break;
+ case MOZ_GTK_TAB_TOP:
+ {
+ // TODO - create from CSS node
+ style = GetWidgetStyleWithClass(MOZ_GTK_NOTEBOOK,
+ GTK_STYLE_CLASS_TOP);
+ gtk_style_context_add_region(style, GTK_STYLE_REGION_TAB,
+ static_cast<GtkRegionFlags>(0));
+ return style;
+ }
+ case MOZ_GTK_TAB_BOTTOM:
+ {
+ // TODO - create from CSS node
+ style = GetWidgetStyleWithClass(MOZ_GTK_NOTEBOOK,
+ GTK_STYLE_CLASS_BOTTOM);
+ gtk_style_context_add_region(style, GTK_STYLE_REGION_TAB,
+ static_cast<GtkRegionFlags>(0));
+ return style;
+ }
+ case MOZ_GTK_NOTEBOOK:
+ case MOZ_GTK_NOTEBOOK_HEADER:
+ case MOZ_GTK_TABPANELS:
+ case MOZ_GTK_TAB_SCROLLARROW:
+ {
+ // TODO - create from CSS node
+ GtkWidget* widget = GetWidget(MOZ_GTK_NOTEBOOK);
+ return gtk_widget_get_style_context(widget);
+ }
+ default:
+ return GetWidgetRootStyle(aNodeType);
+ }
+
+ MOZ_ASSERT(style, "missing style context for node type");
+ sStyleStorage[aNodeType] = style;
+ return style;
+}
+
+/* GetWidgetStyleInternal is used by Gtk < 3.20 */
+static GtkStyleContext*
+GetWidgetStyleInternal(WidgetNodeType aNodeType)
+{
+ switch (aNodeType) {
+ case MOZ_GTK_SCROLLBAR_TROUGH_HORIZONTAL:
+ return GetWidgetStyleWithClass(MOZ_GTK_SCROLLBAR_HORIZONTAL,
+ GTK_STYLE_CLASS_TROUGH);
+ case MOZ_GTK_SCROLLBAR_THUMB_HORIZONTAL:
+ return GetWidgetStyleWithClass(MOZ_GTK_SCROLLBAR_HORIZONTAL,
+ GTK_STYLE_CLASS_SLIDER);
+ case MOZ_GTK_SCROLLBAR_TROUGH_VERTICAL:
+ return GetWidgetStyleWithClass(MOZ_GTK_SCROLLBAR_VERTICAL,
+ GTK_STYLE_CLASS_TROUGH);
+ case MOZ_GTK_SCROLLBAR_THUMB_VERTICAL:
+ return GetWidgetStyleWithClass(MOZ_GTK_SCROLLBAR_VERTICAL,
+ GTK_STYLE_CLASS_SLIDER);
+ case MOZ_GTK_RADIOBUTTON:
+ return GetWidgetStyleWithClass(MOZ_GTK_RADIOBUTTON_CONTAINER,
+ GTK_STYLE_CLASS_RADIO);
+ case MOZ_GTK_CHECKBUTTON:
+ return GetWidgetStyleWithClass(MOZ_GTK_CHECKBUTTON_CONTAINER,
+ GTK_STYLE_CLASS_CHECK);
+ case MOZ_GTK_RADIOMENUITEM:
+ return GetWidgetStyleWithClass(MOZ_GTK_RADIOMENUITEM_CONTAINER,
+ GTK_STYLE_CLASS_RADIO);
+ case MOZ_GTK_CHECKMENUITEM:
+ return GetWidgetStyleWithClass(MOZ_GTK_CHECKMENUITEM_CONTAINER,
+ GTK_STYLE_CLASS_CHECK);
+ case MOZ_GTK_PROGRESS_TROUGH:
+ return GetWidgetStyleWithClass(MOZ_GTK_PROGRESSBAR,
+ GTK_STYLE_CLASS_TROUGH);
+ case MOZ_GTK_TOOLTIP: {
+ GtkStyleContext* style = sStyleStorage[aNodeType];
+ if (style)
+ return style;
+
+ // The tooltip style class is added first in CreateTooltipWidget() so
+ // that gtk_widget_path_append_for_widget() in CreateStyleForWidget()
+ // will find it.
+ GtkWidget* tooltipWindow = CreateTooltipWidget();
+ style = CreateStyleForWidget(tooltipWindow, nullptr);
+ gtk_widget_destroy(tooltipWindow); // Release GtkWindow self-reference.
+ sStyleStorage[aNodeType] = style;
+ return style;
+ }
+ case MOZ_GTK_GRIPPER:
+ return GetWidgetStyleWithClass(MOZ_GTK_GRIPPER,
+ GTK_STYLE_CLASS_GRIP);
+ case MOZ_GTK_INFO_BAR:
+ return GetWidgetStyleWithClass(MOZ_GTK_INFO_BAR,
+ GTK_STYLE_CLASS_INFO);
+ case MOZ_GTK_SPINBUTTON_ENTRY:
+ return GetWidgetStyleWithClass(MOZ_GTK_SPINBUTTON,
+ GTK_STYLE_CLASS_ENTRY);
+ case MOZ_GTK_SCROLLED_WINDOW:
+ return GetWidgetStyleWithClass(MOZ_GTK_SCROLLED_WINDOW,
+ GTK_STYLE_CLASS_FRAME);
+ case MOZ_GTK_TEXT_VIEW:
+ return GetWidgetStyleWithClass(MOZ_GTK_TEXT_VIEW,
+ GTK_STYLE_CLASS_VIEW);
+ case MOZ_GTK_FRAME_BORDER:
+ return GetWidgetRootStyle(MOZ_GTK_FRAME);
+ case MOZ_GTK_TREEVIEW_VIEW:
+ return GetWidgetStyleWithClass(MOZ_GTK_TREEVIEW,
+ GTK_STYLE_CLASS_VIEW);
+ case MOZ_GTK_TREEVIEW_EXPANDER:
+ return GetWidgetStyleWithClass(MOZ_GTK_TREEVIEW,
+ GTK_STYLE_CLASS_EXPANDER);
+ case MOZ_GTK_SPLITTER_SEPARATOR_HORIZONTAL:
+ return GetWidgetStyleWithClass(MOZ_GTK_SPLITTER_HORIZONTAL,
+ GTK_STYLE_CLASS_PANE_SEPARATOR);
+ case MOZ_GTK_SPLITTER_SEPARATOR_VERTICAL:
+ return GetWidgetStyleWithClass(MOZ_GTK_SPLITTER_VERTICAL,
+ GTK_STYLE_CLASS_PANE_SEPARATOR);
+ case MOZ_GTK_SCALE_TROUGH_HORIZONTAL:
+ return GetWidgetStyleWithClass(MOZ_GTK_SCALE_HORIZONTAL,
+ GTK_STYLE_CLASS_TROUGH);
+ case MOZ_GTK_SCALE_TROUGH_VERTICAL:
+ return GetWidgetStyleWithClass(MOZ_GTK_SCALE_VERTICAL,
+ GTK_STYLE_CLASS_TROUGH);
+ case MOZ_GTK_SCALE_THUMB_HORIZONTAL:
+ return GetWidgetStyleWithClass(MOZ_GTK_SCALE_HORIZONTAL,
+ GTK_STYLE_CLASS_SLIDER);
+ case MOZ_GTK_SCALE_THUMB_VERTICAL:
+ return GetWidgetStyleWithClass(MOZ_GTK_SCALE_VERTICAL,
+ GTK_STYLE_CLASS_SLIDER);
+ case MOZ_GTK_TAB_TOP:
+ {
+ GtkStyleContext* style = GetWidgetStyleWithClass(MOZ_GTK_NOTEBOOK,
+ GTK_STYLE_CLASS_TOP);
+ gtk_style_context_add_region(style, GTK_STYLE_REGION_TAB,
+ static_cast<GtkRegionFlags>(0));
+ return style;
+ }
+ case MOZ_GTK_TAB_BOTTOM:
+ {
+ GtkStyleContext* style = GetWidgetStyleWithClass(MOZ_GTK_NOTEBOOK,
+ GTK_STYLE_CLASS_BOTTOM);
+ gtk_style_context_add_region(style, GTK_STYLE_REGION_TAB,
+ static_cast<GtkRegionFlags>(0));
+ return style;
+ }
+ case MOZ_GTK_NOTEBOOK:
+ case MOZ_GTK_NOTEBOOK_HEADER:
+ case MOZ_GTK_TABPANELS:
+ case MOZ_GTK_TAB_SCROLLARROW:
+ {
+ GtkWidget* widget = GetWidget(MOZ_GTK_NOTEBOOK);
+ return gtk_widget_get_style_context(widget);
+ }
+ default:
+ return GetWidgetRootStyle(aNodeType);
+ }
+}
+
+void
+ResetWidgetCache(void)
+{
+ MOZ_ASSERT(!sStyleContextNeedsRestore);
+#ifdef DEBUG
+ MOZ_ASSERT(!sCurrentStyleContext);
+#endif
+
+ for (int i = 0; i < MOZ_GTK_WIDGET_NODE_COUNT; i++) {
+ if (sStyleStorage[i])
+ g_object_unref(sStyleStorage[i]);
+ }
+ mozilla::PodArrayZero(sStyleStorage);
+
+ /* This will destroy all of our widgets */
+ if (sWidgetStorage[MOZ_GTK_WINDOW])
+ gtk_widget_destroy(sWidgetStorage[MOZ_GTK_WINDOW]);
+
+ /* Clear already freed arrays */
+ mozilla::PodArrayZero(sWidgetStorage);
+}
+
+GtkStyleContext*
+ClaimStyleContext(WidgetNodeType aNodeType, GtkTextDirection aDirection,
+ GtkStateFlags aStateFlags, StyleFlags aFlags)
+{
+ MOZ_ASSERT(!sStyleContextNeedsRestore);
+ GtkStyleContext* style;
+ if (gtk_check_version(3, 20, 0) != nullptr) {
+ style = GetWidgetStyleInternal(aNodeType);
+ } else {
+ style = GetCssNodeStyleInternal(aNodeType);
+ }
+#ifdef DEBUG
+ MOZ_ASSERT(!sCurrentStyleContext);
+ sCurrentStyleContext = style;
+#endif
+ bool stateChanged = false;
+ bool stateHasDirection = gtk_get_minor_version() >= 8;
+ GtkStateFlags oldState = gtk_style_context_get_state(style);
+ MOZ_ASSERT(!(aStateFlags & (STATE_FLAG_DIR_LTR|STATE_FLAG_DIR_RTL)));
+ unsigned newState = aStateFlags;
+ if (stateHasDirection) {
+ switch (aDirection) {
+ case GTK_TEXT_DIR_LTR:
+ newState |= STATE_FLAG_DIR_LTR;
+ break;
+ case GTK_TEXT_DIR_RTL:
+ newState |= STATE_FLAG_DIR_RTL;
+ break;
+ default:
+ MOZ_FALLTHROUGH_ASSERT("Bad GtkTextDirection");
+ case GTK_TEXT_DIR_NONE:
+ // GtkWidget uses a default direction if neither is explicitly
+ // specified, but here DIR_NONE is interpreted as meaning the
+ // direction is not important, so don't change the direction
+ // unnecessarily.
+ newState |= oldState & (STATE_FLAG_DIR_LTR|STATE_FLAG_DIR_RTL);
+ }
+ } else if (aDirection != GTK_TEXT_DIR_NONE) {
+ GtkTextDirection oldDirection = gtk_style_context_get_direction(style);
+ if (aDirection != oldDirection) {
+ gtk_style_context_set_direction(style, aDirection);
+ stateChanged = true;
+ }
+ }
+ if (oldState != newState) {
+ gtk_style_context_set_state(style, static_cast<GtkStateFlags>(newState));
+ stateChanged = true;
+ }
+ // This invalidate is necessary for unsaved style contexts from GtkWidgets
+ // in pre-3.18 GTK, because automatic invalidation of such contexts
+ // was delayed until a resize event runs.
+ //
+ // https://bugzilla.mozilla.org/show_bug.cgi?id=1272194#c7
+ //
+ // Avoid calling invalidate on saved contexts to avoid performing
+ // build_properties() (in 3.16 stylecontext.c) unnecessarily early.
+ if (stateChanged && !sStyleContextNeedsRestore) {
+ gtk_style_context_invalidate(style);
+ }
+ return style;
+}
+
+void
+ReleaseStyleContext(GtkStyleContext* aStyleContext)
+{
+ if (sStyleContextNeedsRestore) {
+ gtk_style_context_restore(aStyleContext);
+ }
+ sStyleContextNeedsRestore = false;
+#ifdef DEBUG
+ MOZ_ASSERT(sCurrentStyleContext == aStyleContext);
+ sCurrentStyleContext = nullptr;
+#endif
+}