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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 };
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);
bool GetExtraSizeForWidget(nsIFrame* aFrame, StyleAppearance aAppearance,
nsIntMargin* aExtra);
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.
void GetCachedWidgetBorder(nsIFrame* aFrame, StyleAppearance aAppearance,
GtkTextDirection aDirection,
LayoutDeviceIntMargin* aResult);
uint8_t mBorderCacheValid[(MOZ_GTK_WIDGET_NODE_COUNT + 7) / 8];
LayoutDeviceIntMargin mBorderCache[MOZ_GTK_WIDGET_NODE_COUNT];
};
#endif
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