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-rw-r--r--widget/gtk/nsNativeThemeGTK.h119
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diff --git a/widget/gtk/nsNativeThemeGTK.h b/widget/gtk/nsNativeThemeGTK.h
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+/* -*- 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 _GTK_NSNATIVETHEMEGTK_H_
+#define _GTK_NSNATIVETHEMEGTK_H_
+
+#include "nsITheme.h"
+#include "nsCOMPtr.h"
+#include "nsAtom.h"
+#include "Theme.h"
+
+#include <gtk/gtk.h>
+#include "gtkdrawing.h"
+
+class nsNativeThemeGTK final : public mozilla::widget::Theme {
+ using Theme = mozilla::widget::Theme;
+
+ public:
+ // The nsITheme interface.
+ NS_IMETHOD DrawWidgetBackground(gfxContext* aContext, nsIFrame* aFrame,
+ StyleAppearance aAppearance,
+ const nsRect& aRect, const nsRect& aDirtyRect,
+ DrawOverflow) override;
+
+ bool CreateWebRenderCommandsForWidget(
+ mozilla::wr::DisplayListBuilder& aBuilder,
+ mozilla::wr::IpcResourceUpdateQueue& aResources,
+ const mozilla::layers::StackingContextHelper& aSc,
+ mozilla::layers::RenderRootStateManager* aManager, nsIFrame*,
+ StyleAppearance, const nsRect& aRect) override;
+
+ [[nodiscard]] LayoutDeviceIntMargin GetWidgetBorder(
+ nsDeviceContext* aContext, nsIFrame* aFrame,
+ StyleAppearance aAppearance) override;
+
+ bool GetWidgetPadding(nsDeviceContext* aContext, nsIFrame* aFrame,
+ StyleAppearance aAppearance,
+ LayoutDeviceIntMargin* aResult) override;
+
+ bool GetWidgetOverflow(nsDeviceContext* aContext, nsIFrame* aFrame,
+ StyleAppearance aAppearance,
+ nsRect* aOverflowRect) override;
+
+ // Whether we draw a non-native widget.
+ //
+ // We always draw scrollbars as non-native so that all of Firefox has
+ // consistent scrollbar styles both in chrome and content (plus, the
+ // non-native scrollbars support scrollbar-width, auto-darkening...).
+ //
+ // We draw other widgets as non-native when their color-scheme doesn't match
+ // the current GTK theme's color-scheme. We do that because frequently
+ // switching GTK themes at runtime is prohibitively expensive. In that case
+ // (`BecauseColorMismatch`) we don't call into the non-native theme for sizing
+ // information (GetWidgetPadding/Border and GetMinimumWidgetSize), to avoid
+ // subtle sizing changes. The non-native theme can basically draw at any size,
+ // so we prefer to have consistent sizing information.
+ enum class NonNative { No, Always, BecauseColorMismatch };
+ static bool IsWidgetAlwaysNonNative(nsIFrame*, StyleAppearance);
+ NonNative IsWidgetNonNative(nsIFrame*, StyleAppearance);
+
+ mozilla::LayoutDeviceIntSize GetMinimumWidgetSize(
+ nsPresContext* aPresContext, nsIFrame* aFrame,
+ StyleAppearance aAppearance) override;
+
+ NS_IMETHOD WidgetStateChanged(nsIFrame* aFrame, StyleAppearance aAppearance,
+ nsAtom* aAttribute, bool* aShouldRepaint,
+ const nsAttrValue* aOldValue) override;
+
+ NS_IMETHOD ThemeChanged() override;
+
+ NS_IMETHOD_(bool)
+ ThemeSupportsWidget(nsPresContext* aPresContext, nsIFrame* aFrame,
+ StyleAppearance aAppearance) override;
+
+ NS_IMETHOD_(bool) WidgetIsContainer(StyleAppearance aAppearance) override;
+
+ bool ThemeDrawsFocusForWidget(nsIFrame*, StyleAppearance) override;
+
+ bool ThemeNeedsComboboxDropmarker() override;
+ Transparency GetWidgetTransparency(nsIFrame*, StyleAppearance) override;
+
+ nsNativeThemeGTK();
+
+ protected:
+ virtual ~nsNativeThemeGTK();
+
+ private:
+ GtkTextDirection GetTextDirection(nsIFrame* aFrame);
+ gint GetTabMarginPixels(nsIFrame* aFrame);
+ bool GetGtkWidgetAndState(StyleAppearance aAppearance, nsIFrame* aFrame,
+ WidgetNodeType& aGtkWidgetType,
+ GtkWidgetState* aState, gint* aWidgetFlags);
+ mozilla::CSSIntMargin GetExtraSizeForWidget(nsIFrame*, StyleAppearance);
+ bool IsWidgetVisible(StyleAppearance aAppearance);
+
+ void RefreshWidgetWindow(nsIFrame* aFrame);
+ WidgetNodeType NativeThemeToGtkTheme(StyleAppearance aAppearance,
+ nsIFrame* aFrame);
+
+ uint8_t mDisabledWidgetTypes
+ [(static_cast<size_t>(mozilla::StyleAppearance::Count) + 7) / 8];
+ uint8_t
+ mSafeWidgetStates[static_cast<size_t>(mozilla::StyleAppearance::Count) *
+ 4]; // 32 bits per widget
+ static const char* sDisabledEngines[];
+
+ // Because moz_gtk_get_widget_border can be slow, we cache its results
+ // by widget type. Each bit in mBorderCacheValid says whether the
+ // corresponding entry in mBorderCache is valid.
+ mozilla::CSSIntMargin GetCachedWidgetBorder(nsIFrame* aFrame,
+ StyleAppearance aAppearance,
+ GtkTextDirection aDirection);
+ uint8_t mBorderCacheValid[(MOZ_GTK_WIDGET_NODE_COUNT + 7) / 8];
+ mozilla::CSSIntMargin mBorderCache[MOZ_GTK_WIDGET_NODE_COUNT];
+};
+
+#endif