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5bf95f904681a3c77df931eb2ee3256a19625c77
tubestation/widget/gtk/nsNativeThemeGTK.cpp
Emilio Cobos Álvarez 5bf95f9046 Bug 1962978 - Use non-native listboxes on GTK. r=stransky,geckoview-reviewers,nika 
Gtk4 doesn't use different background colors for GtkColumnView (the
replacement for the treeview), so avoid computing one.

Our computation didn't have any guarantee of matching the fieldtext
foreground color.

This matches windows too. Remove unused -moz-eventreerow while at it.

Differential Revision: https://phabricator.services.mozilla.com/D249237
2025-05-15 10:53:11 +00:00

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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/. */
#include "nsNativeThemeGTK.h"
#include "nsPresContext.h"
#include "nsStyleConsts.h"
#include "gtkdrawing.h"
#include "ScreenHelperGTK.h"
#include "WidgetUtilsGtk.h"
#include "gfx2DGlue.h"
#include "nsIObserverService.h"
#include "nsIFrame.h"
#include "nsIContent.h"
#include "nsViewManager.h"
#include "nsNameSpaceManager.h"
#include "nsGfxCIID.h"
#include "nsTransform2D.h"
#include "nsXULPopupManager.h"
#include "tree/nsTreeBodyFrame.h"
#include "prlink.h"
#include "nsGkAtoms.h"
#include "nsAttrValueInlines.h"
#include "mozilla/dom/HTMLInputElement.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/Services.h"
#include <gdk/gdkprivate.h>
#include <gtk/gtk.h>
#include "gfxContext.h"
#include "mozilla/dom/XULButtonElement.h"
#include "mozilla/gfx/BorrowedContext.h"
#include "mozilla/gfx/HelpersCairo.h"
#include "mozilla/gfx/PathHelpers.h"
#include "mozilla/Preferences.h"
#include "mozilla/PresShell.h"
#include "mozilla/layers/StackingContextHelper.h"
#include "mozilla/StaticPrefs_layout.h"
#include "mozilla/StaticPrefs_widget.h"
#include "nsWindow.h"
#include "nsLayoutUtils.h"
#include "Theme.h"
#ifdef MOZ_X11
# ifdef CAIRO_HAS_XLIB_SURFACE
# include "cairo-xlib.h"
# endif
#endif
#include <algorithm>
#include <dlfcn.h>
using namespace mozilla;
using namespace mozilla::gfx;
using namespace mozilla::widget;
static int gLastGdkError;
// Return widget scale factor of the monitor where the window is located by the
// most part. We intentionally honor the text scale factor here in order to
// have consistent scaling with other UI elements.
static inline CSSToLayoutDeviceScale GetWidgetScaleFactor(nsIFrame* aFrame) {
return aFrame->PresContext()->CSSToDevPixelScale();
}
nsNativeThemeGTK::nsNativeThemeGTK() : Theme(ScrollbarStyle()) {
if (moz_gtk_init() != MOZ_GTK_SUCCESS) {
memset(mDisabledWidgetTypes, 0xff, sizeof(mDisabledWidgetTypes));
return;
}
ThemeChanged();
}
nsNativeThemeGTK::~nsNativeThemeGTK() { moz_gtk_shutdown(); }
void nsNativeThemeGTK::RefreshWidgetWindow(nsIFrame* aFrame) {
MOZ_ASSERT(aFrame);
MOZ_ASSERT(aFrame->PresShell());
nsViewManager* vm = aFrame->PresShell()->GetViewManager();
if (!vm) {
return;
}
vm->InvalidateAllViews();
}
static bool IsFrameContentNodeInNamespace(nsIFrame* aFrame,
uint32_t aNamespace) {
nsIContent* content = aFrame ? aFrame->GetContent() : nullptr;
if (!content) return false;
return content->IsInNamespace(aNamespace);
}
static bool IsWidgetTypeDisabled(const uint8_t* aDisabledVector,
StyleAppearance aAppearance) {
auto type = static_cast<size_t>(aAppearance);
MOZ_ASSERT(type < static_cast<size_t>(StyleAppearance::Count));
return (aDisabledVector[type >> 3] & (1 << (type & 7))) != 0;
}
static void SetWidgetTypeDisabled(uint8_t* aDisabledVector,
StyleAppearance aAppearance) {
auto type = static_cast<size_t>(aAppearance);
MOZ_ASSERT(type < static_cast<size_t>(mozilla::StyleAppearance::Count));
aDisabledVector[type >> 3] |= (1 << (type & 7));
}
static inline uint16_t GetWidgetStateKey(StyleAppearance aAppearance,
GtkWidgetState* aWidgetState) {
return (aWidgetState->active | aWidgetState->focused << 1 |
aWidgetState->inHover << 2 | aWidgetState->disabled << 3 |
aWidgetState->isDefault << 4 |
static_cast<uint16_t>(aAppearance) << 5);
}
static bool IsWidgetStateSafe(uint8_t* aSafeVector, StyleAppearance aAppearance,
GtkWidgetState* aWidgetState) {
MOZ_ASSERT(static_cast<size_t>(aAppearance) <
static_cast<size_t>(mozilla::StyleAppearance::Count));
uint16_t key = GetWidgetStateKey(aAppearance, aWidgetState);
return (aSafeVector[key >> 3] & (1 << (key & 7))) != 0;
}
static void SetWidgetStateSafe(uint8_t* aSafeVector,
StyleAppearance aAppearance,
GtkWidgetState* aWidgetState) {
MOZ_ASSERT(static_cast<size_t>(aAppearance) <
static_cast<size_t>(mozilla::StyleAppearance::Count));
uint16_t key = GetWidgetStateKey(aAppearance, aWidgetState);
aSafeVector[key >> 3] |= (1 << (key & 7));
}
/* static */
GtkTextDirection nsNativeThemeGTK::GetTextDirection(nsIFrame* aFrame) {
// IsFrameRTL() treats vertical-rl modes as right-to-left (in addition to
// horizontal text with direction=RTL), rather than just considering the
// text direction. GtkTextDirection does not have distinct values for
// vertical writing modes, but considering the block flow direction is
// important for resizers and scrollbar elements, at least.
return IsFrameRTL(aFrame) ? GTK_TEXT_DIR_RTL : GTK_TEXT_DIR_LTR;
}
// Returns positive for negative margins (otherwise 0).
gint nsNativeThemeGTK::GetTabMarginPixels(nsIFrame* aFrame) {
nscoord margin = IsBottomTab(aFrame) ? aFrame->GetUsedMargin().top
: aFrame->GetUsedMargin().bottom;
return std::min<gint>(
MOZ_GTK_TAB_MARGIN_MASK,
std::max(0, aFrame->PresContext()->AppUnitsToDevPixels(-margin)));
}
bool nsNativeThemeGTK::GetGtkWidgetAndState(StyleAppearance aAppearance,
nsIFrame* aFrame,
WidgetNodeType& aGtkWidgetType,
GtkWidgetState* aState,
gint* aWidgetFlags) {
if (aWidgetFlags) {
*aWidgetFlags = 0;
}
ElementState elementState = GetContentState(aFrame, aAppearance);
if (aState) {
memset(aState, 0, sizeof(GtkWidgetState));
if (aWidgetFlags) {
if (elementState.HasState(ElementState::CHECKED)) {
*aWidgetFlags |= MOZ_GTK_WIDGET_CHECKED;
}
if (elementState.HasState(ElementState::INDETERMINATE)) {
*aWidgetFlags |= MOZ_GTK_WIDGET_INCONSISTENT;
}
}
aState->disabled =
elementState.HasState(ElementState::DISABLED) || IsReadOnly(aFrame);
aState->active = elementState.HasState(ElementState::ACTIVE);
aState->focused = elementState.HasState(ElementState::FOCUS);
aState->inHover = elementState.HasState(ElementState::HOVER);
aState->isDefault = IsDefaultButton(aFrame);
aState->canDefault = FALSE; // XXX fix me
if (IsFrameContentNodeInNamespace(aFrame, kNameSpaceID_XUL)) {
// For these widget types, some element (either a child or parent)
// actually has element focus, so we check the focused attribute
// to see whether to draw in the focused state.
aState->focused = elementState.HasState(ElementState::FOCUSRING);
}
if (aAppearance == StyleAppearance::MozWindowTitlebar ||
aAppearance == StyleAppearance::MozWindowTitlebarMaximized) {
aState->backdrop = aFrame->PresContext()->Document()->State().HasState(
dom::DocumentState::WINDOW_INACTIVE);
}
}
switch (aAppearance) {
case StyleAppearance::Tabpanels:
aGtkWidgetType = MOZ_GTK_TABPANELS;
break;
case StyleAppearance::Tab: {
if (IsBottomTab(aFrame)) {
aGtkWidgetType = MOZ_GTK_TAB_BOTTOM;
} else {
aGtkWidgetType = MOZ_GTK_TAB_TOP;
}
if (aWidgetFlags) {
/* First bits will be used to store max(0,-bmargin) where bmargin
* is the bottom margin of the tab in pixels (resp. top margin,
* for bottom tabs). */
*aWidgetFlags = GetTabMarginPixels(aFrame);
if (IsSelectedTab(aFrame)) *aWidgetFlags |= MOZ_GTK_TAB_SELECTED;
if (IsFirstTab(aFrame)) *aWidgetFlags |= MOZ_GTK_TAB_FIRST;
}
} break;
case StyleAppearance::Splitter:
if (IsHorizontal(aFrame))
aGtkWidgetType = MOZ_GTK_SPLITTER_VERTICAL;
else
aGtkWidgetType = MOZ_GTK_SPLITTER_HORIZONTAL;
break;
case StyleAppearance::MozWindowDecorations:
aGtkWidgetType = MOZ_GTK_WINDOW_DECORATION;
break;
default:
return false;
}
return true;
}
class SystemCairoClipper : public ClipExporter {
public:
explicit SystemCairoClipper(cairo_t* aContext, gint aScaleFactor = 1)
: mContext(aContext), mScaleFactor(aScaleFactor) {}
void BeginClip(const Matrix& aTransform) override {
cairo_matrix_t mat;
GfxMatrixToCairoMatrix(aTransform, mat);
// We also need to remove the scale factor effect from the matrix
mat.y0 = mat.y0 / mScaleFactor;
mat.x0 = mat.x0 / mScaleFactor;
cairo_set_matrix(mContext, &mat);
cairo_new_path(mContext);
}
void MoveTo(const Point& aPoint) override {
cairo_move_to(mContext, aPoint.x / mScaleFactor, aPoint.y / mScaleFactor);
mBeginPoint = aPoint;
mCurrentPoint = aPoint;
}
void LineTo(const Point& aPoint) override {
cairo_line_to(mContext, aPoint.x / mScaleFactor, aPoint.y / mScaleFactor);
mCurrentPoint = aPoint;
}
void BezierTo(const Point& aCP1, const Point& aCP2,
const Point& aCP3) override {
cairo_curve_to(mContext, aCP1.x / mScaleFactor, aCP1.y / mScaleFactor,
aCP2.x / mScaleFactor, aCP2.y / mScaleFactor,
aCP3.x / mScaleFactor, aCP3.y / mScaleFactor);
mCurrentPoint = aCP3;
}
void QuadraticBezierTo(const Point& aCP1, const Point& aCP2) override {
Point CP0 = CurrentPoint();
Point CP1 = (CP0 + aCP1 * 2.0) / 3.0;
Point CP2 = (aCP2 + aCP1 * 2.0) / 3.0;
Point CP3 = aCP2;
cairo_curve_to(mContext, CP1.x / mScaleFactor, CP1.y / mScaleFactor,
CP2.x / mScaleFactor, CP2.y / mScaleFactor,
CP3.x / mScaleFactor, CP3.y / mScaleFactor);
mCurrentPoint = aCP2;
}
void Arc(const Point& aOrigin, float aRadius, float aStartAngle,
float aEndAngle, bool aAntiClockwise) override {
ArcToBezier(this, aOrigin, Size(aRadius, aRadius), aStartAngle, aEndAngle,
aAntiClockwise);
}
void Close() override {
cairo_close_path(mContext);
mCurrentPoint = mBeginPoint;
}
void EndClip() override { cairo_clip(mContext); }
private:
cairo_t* mContext;
gint mScaleFactor;
};
static void DrawThemeWithCairo(gfxContext* aContext, DrawTarget* aDrawTarget,
GtkWidgetState aState,
WidgetNodeType aGTKWidgetType, gint aFlags,
GtkTextDirection aDirection, double aScaleFactor,
bool aSnapped, const Point& aDrawOrigin,
const nsIntSize& aDrawSize,
GdkRectangle& aGDKRect,
nsITheme::Transparency aTransparency) {
static auto sCairoSurfaceSetDeviceScalePtr =
(void (*)(cairo_surface_t*, double, double))dlsym(
RTLD_DEFAULT, "cairo_surface_set_device_scale");
const bool useHiDPIWidgets =
aScaleFactor != 1.0 && sCairoSurfaceSetDeviceScalePtr;
Point drawOffsetScaled;
Point drawOffsetOriginal;
Matrix transform;
if (!aSnapped) {
// If we are not snapped, we depend on the DT for translation.
drawOffsetOriginal = aDrawOrigin;
drawOffsetScaled = useHiDPIWidgets ? drawOffsetOriginal / aScaleFactor
: drawOffsetOriginal;
transform = aDrawTarget->GetTransform().PreTranslate(drawOffsetScaled);
} else {
// Otherwise, we only need to take the device offset into account.
drawOffsetOriginal = aDrawOrigin - aContext->GetDeviceOffset();
drawOffsetScaled = useHiDPIWidgets ? drawOffsetOriginal / aScaleFactor
: drawOffsetOriginal;
transform = Matrix::Translation(drawOffsetScaled);
}
if (!useHiDPIWidgets && aScaleFactor != 1) {
transform.PreScale(aScaleFactor, aScaleFactor);
}
cairo_matrix_t mat;
GfxMatrixToCairoMatrix(transform, mat);
Size clipSize((aDrawSize.width + aScaleFactor - 1) / aScaleFactor,
(aDrawSize.height + aScaleFactor - 1) / aScaleFactor);
// A direct Cairo draw target is not available, so we need to create a
// temporary one.
#if defined(MOZ_X11) && defined(CAIRO_HAS_XLIB_SURFACE)
if (GdkIsX11Display()) {
// If using a Cairo xlib surface, then try to reuse it.
BorrowedXlibDrawable borrow(aDrawTarget);
if (Drawable drawable = borrow.GetDrawable()) {
nsIntSize size = borrow.GetSize();
cairo_surface_t* surf = cairo_xlib_surface_create(
borrow.GetDisplay(), drawable, borrow.GetVisual(), size.width,
size.height);
if (!NS_WARN_IF(!surf)) {
Point offset = borrow.GetOffset();
if (offset != Point()) {
cairo_surface_set_device_offset(surf, offset.x, offset.y);
}
cairo_t* cr = cairo_create(surf);
if (!NS_WARN_IF(!cr)) {
RefPtr<SystemCairoClipper> clipper = new SystemCairoClipper(cr);
aContext->ExportClip(*clipper);
cairo_set_matrix(cr, &mat);
cairo_new_path(cr);
cairo_rectangle(cr, 0, 0, clipSize.width, clipSize.height);
cairo_clip(cr);
moz_gtk_widget_paint(aGTKWidgetType, cr, &aGDKRect, &aState, aFlags,
aDirection);
cairo_destroy(cr);
}
cairo_surface_destroy(surf);
}
borrow.Finish();
return;
}
}
#endif
// Check if the widget requires complex masking that must be composited.
// Try to directly write to the draw target's pixels if possible.
uint8_t* data;
nsIntSize size;
int32_t stride;
SurfaceFormat format;
IntPoint origin;
if (aDrawTarget->LockBits(&data, &size, &stride, &format, &origin)) {
// Create a Cairo image surface context the device rectangle.
cairo_surface_t* surf = cairo_image_surface_create_for_data(
data, GfxFormatToCairoFormat(format), size.width, size.height, stride);
if (!NS_WARN_IF(!surf)) {
if (useHiDPIWidgets) {
sCairoSurfaceSetDeviceScalePtr(surf, aScaleFactor, aScaleFactor);
}
if (origin != IntPoint()) {
cairo_surface_set_device_offset(surf, -origin.x, -origin.y);
}
cairo_t* cr = cairo_create(surf);
if (!NS_WARN_IF(!cr)) {
RefPtr<SystemCairoClipper> clipper =
new SystemCairoClipper(cr, useHiDPIWidgets ? aScaleFactor : 1);
aContext->ExportClip(*clipper);
cairo_set_matrix(cr, &mat);
cairo_new_path(cr);
cairo_rectangle(cr, 0, 0, clipSize.width, clipSize.height);
cairo_clip(cr);
moz_gtk_widget_paint(aGTKWidgetType, cr, &aGDKRect, &aState, aFlags,
aDirection);
cairo_destroy(cr);
}
cairo_surface_destroy(surf);
}
aDrawTarget->ReleaseBits(data);
} else {
// If the widget has any transparency, make sure to choose an alpha format.
format = aTransparency != nsITheme::eOpaque ? SurfaceFormat::B8G8R8A8
: aDrawTarget->GetFormat();
// Create a temporary data surface to render the widget into.
RefPtr<DataSourceSurface> dataSurface = Factory::CreateDataSourceSurface(
aDrawSize, format, aTransparency != nsITheme::eOpaque);
DataSourceSurface::MappedSurface map;
if (!NS_WARN_IF(
!(dataSurface &&
dataSurface->Map(DataSourceSurface::MapType::WRITE, &map)))) {
// Create a Cairo image surface wrapping the data surface.
cairo_surface_t* surf = cairo_image_surface_create_for_data(
map.mData, GfxFormatToCairoFormat(format), aDrawSize.width,
aDrawSize.height, map.mStride);
cairo_t* cr = nullptr;
if (!NS_WARN_IF(!surf)) {
cr = cairo_create(surf);
if (!NS_WARN_IF(!cr)) {
if (aScaleFactor != 1) {
if (useHiDPIWidgets) {
sCairoSurfaceSetDeviceScalePtr(surf, aScaleFactor, aScaleFactor);
} else {
cairo_scale(cr, aScaleFactor, aScaleFactor);
}
}
moz_gtk_widget_paint(aGTKWidgetType, cr, &aGDKRect, &aState, aFlags,
aDirection);
}
}
// Unmap the surface before using it as a source
dataSurface->Unmap();
if (cr) {
// The widget either needs to be masked or has transparency, so use the
// slower drawing path.
aDrawTarget->DrawSurface(
dataSurface,
Rect(aSnapped ? drawOffsetOriginal -
aDrawTarget->GetTransform().GetTranslation()
: drawOffsetOriginal,
Size(aDrawSize)),
Rect(0, 0, aDrawSize.width, aDrawSize.height));
cairo_destroy(cr);
}
if (surf) {
cairo_surface_destroy(surf);
}
}
}
}
NS_IMETHODIMP
nsNativeThemeGTK::DrawWidgetBackground(gfxContext* aContext, nsIFrame* aFrame,
StyleAppearance aAppearance,
const nsRect& aRect,
const nsRect& aDirtyRect,
DrawOverflow aDrawOverflow) {
if (IsWidgetNonNative(aFrame, aAppearance) != NonNative::No) {
return Theme::DrawWidgetBackground(aContext, aFrame, aAppearance, aRect,
aDirtyRect, aDrawOverflow);
}
GtkWidgetState state;
WidgetNodeType gtkWidgetType;
GtkTextDirection direction = GetTextDirection(aFrame);
gint flags;
if (!GetGtkWidgetAndState(aAppearance, aFrame, gtkWidgetType, &state,
&flags)) {
return NS_OK;
}
gfxContext* ctx = aContext;
nsPresContext* presContext = aFrame->PresContext();
gfxRect rect = presContext->AppUnitsToGfxUnits(aRect);
gfxRect dirtyRect = presContext->AppUnitsToGfxUnits(aDirtyRect);
// Align to device pixels where sensible
// to provide crisper and faster drawing.
// Don't snap if it's a non-unit scale factor. We're going to have to take
// slow paths then in any case.
// We prioritize the size when snapping in order to avoid distorting widgets
// that should be square, which can occur if edges are snapped independently.
bool snapped = ctx->UserToDevicePixelSnapped(
rect, gfxContext::SnapOption::PrioritizeSize);
if (snapped) {
// Leave rect in device coords but make dirtyRect consistent.
dirtyRect = ctx->UserToDevice(dirtyRect);
}
// Translate the dirty rect so that it is wrt the widget top-left.
dirtyRect.MoveBy(-rect.TopLeft());
// Round out the dirty rect to gdk pixels to ensure that gtk draws
// enough pixels for interpolation to device pixels.
dirtyRect.RoundOut();
// GTK themes can only draw an integer number of pixels
// (even when not snapped).
LayoutDeviceIntRect widgetRect(0, 0, NS_lround(rect.Width()),
NS_lround(rect.Height()));
// This is the rectangle that will actually be drawn, in gdk pixels
LayoutDeviceIntRect drawingRect(
int32_t(dirtyRect.X()), int32_t(dirtyRect.Y()),
int32_t(dirtyRect.Width()), int32_t(dirtyRect.Height()));
if (widgetRect.IsEmpty() ||
!drawingRect.IntersectRect(widgetRect, drawingRect)) {
return NS_OK;
}
NS_ASSERTION(!IsWidgetTypeDisabled(mDisabledWidgetTypes, aAppearance),
"Trying to render an unsafe widget!");
bool safeState = IsWidgetStateSafe(mSafeWidgetStates, aAppearance, &state);
if (!safeState) {
gLastGdkError = 0;
gdk_error_trap_push();
}
Transparency transparency = GetWidgetTransparency(aFrame, aAppearance);
// gdk rectangles are wrt the drawing rect.
auto scaleFactor = GetWidgetScaleFactor(aFrame);
LayoutDeviceIntRect gdkDevRect(-drawingRect.TopLeft(), widgetRect.Size());
auto gdkCssRect = CSSIntRect::RoundIn(gdkDevRect / scaleFactor);
GdkRectangle gdk_rect = {gdkCssRect.x, gdkCssRect.y, gdkCssRect.width,
gdkCssRect.height};
// Save actual widget scale to GtkWidgetState as we don't provide
// the frame to gtk3drawing routines.
state.image_scale = std::ceil(scaleFactor.scale);
// translate everything so (0,0) is the top left of the drawingRect
gfxPoint origin = rect.TopLeft() + drawingRect.TopLeft().ToUnknownPoint();
DrawThemeWithCairo(ctx, aContext->GetDrawTarget(), state, gtkWidgetType,
flags, direction, scaleFactor.scale, snapped,
ToPoint(origin), drawingRect.Size().ToUnknownSize(),
gdk_rect, transparency);
if (!safeState) {
// gdk_flush() call from expose event crashes Gtk+ on Wayland
// (Gnome BZ #773307)
if (GdkIsX11Display()) {
gdk_flush();
}
gLastGdkError = gdk_error_trap_pop();
if (gLastGdkError) {
#ifdef DEBUG
printf(
"GTK theme failed for widget type %d, error was %d, state was "
"[active=%d,focused=%d,inHover=%d,disabled=%d]\n",
static_cast<int>(aAppearance), gLastGdkError, state.active,
state.focused, state.inHover, state.disabled);
#endif
NS_WARNING("GTK theme failed; disabling unsafe widget");
SetWidgetTypeDisabled(mDisabledWidgetTypes, aAppearance);
// force refresh of the window, because the widget was not
// successfully drawn it must be redrawn using the default look
RefreshWidgetWindow(aFrame);
} else {
SetWidgetStateSafe(mSafeWidgetStates, aAppearance, &state);
}
}
return NS_OK;
}
bool nsNativeThemeGTK::CreateWebRenderCommandsForWidget(
mozilla::wr::DisplayListBuilder& aBuilder,
mozilla::wr::IpcResourceUpdateQueue& aResources,
const mozilla::layers::StackingContextHelper& aSc,
mozilla::layers::RenderRootStateManager* aManager, nsIFrame* aFrame,
StyleAppearance aAppearance, const nsRect& aRect) {
if (IsWidgetNonNative(aFrame, aAppearance) != NonNative::No) {
return Theme::CreateWebRenderCommandsForWidget(
aBuilder, aResources, aSc, aManager, aFrame, aAppearance, aRect);
}
if (aAppearance == StyleAppearance::MozWindowDecorations && GdkIsWaylandDisplay()) {
// On wayland we don't need to draw window decorations.
return true;
}
return false;
}
WidgetNodeType nsNativeThemeGTK::NativeThemeToGtkTheme(
StyleAppearance aAppearance, nsIFrame* aFrame) {
WidgetNodeType gtkWidgetType;
gint unusedFlags;
if (!GetGtkWidgetAndState(aAppearance, aFrame, gtkWidgetType, nullptr,
&unusedFlags)) {
MOZ_ASSERT_UNREACHABLE("Unknown native widget to gtk widget mapping");
return MOZ_GTK_WINDOW;
}
return gtkWidgetType;
}
static void FixupForVerticalWritingMode(WritingMode aWritingMode,
CSSIntMargin* aResult) {
if (aWritingMode.IsVertical()) {
bool rtl = aWritingMode.IsBidiRTL();
LogicalMargin logical(aWritingMode, aResult->top,
rtl ? aResult->left : aResult->right, aResult->bottom,
rtl ? aResult->right : aResult->left);
nsMargin physical = logical.GetPhysicalMargin(aWritingMode);
aResult->top = physical.top;
aResult->right = physical.right;
aResult->bottom = physical.bottom;
aResult->left = physical.left;
}
}
CSSIntMargin nsNativeThemeGTK::GetCachedWidgetBorder(
nsIFrame* aFrame, StyleAppearance aAppearance,
GtkTextDirection aDirection) {
CSSIntMargin result;
WidgetNodeType gtkWidgetType;
gint unusedFlags;
if (GetGtkWidgetAndState(aAppearance, aFrame, gtkWidgetType, nullptr,
&unusedFlags)) {
MOZ_ASSERT(0 <= gtkWidgetType && gtkWidgetType < MOZ_GTK_WIDGET_NODE_COUNT);
uint8_t cacheIndex = gtkWidgetType / 8;
uint8_t cacheBit = 1u << (gtkWidgetType % 8);
if (mBorderCacheValid[cacheIndex] & cacheBit) {
result = mBorderCache[gtkWidgetType];
} else {
moz_gtk_get_widget_border(gtkWidgetType, &result.left.value,
&result.top.value, &result.right.value,
&result.bottom.value, aDirection);
mBorderCacheValid[cacheIndex] |= cacheBit;
mBorderCache[gtkWidgetType] = result;
}
}
FixupForVerticalWritingMode(aFrame->GetWritingMode(), &result);
return result;
}
LayoutDeviceIntMargin nsNativeThemeGTK::GetWidgetBorder(
nsDeviceContext* aContext, nsIFrame* aFrame, StyleAppearance aAppearance) {
if (IsWidgetAlwaysNonNative(aFrame, aAppearance)) {
return Theme::GetWidgetBorder(aContext, aFrame, aAppearance);
}
CSSIntMargin result;
GtkTextDirection direction = GetTextDirection(aFrame);
switch (aAppearance) {
case StyleAppearance::Tab: {
WidgetNodeType gtkWidgetType;
gint flags;
if (!GetGtkWidgetAndState(aAppearance, aFrame, gtkWidgetType, nullptr,
&flags)) {
return {};
}
moz_gtk_get_tab_border(&result.left.value, &result.top.value,
&result.right.value, &result.bottom.value,
direction, (GtkTabFlags)flags, gtkWidgetType);
} break;
default: {
result = GetCachedWidgetBorder(aFrame, aAppearance, direction);
}
}
return (CSSMargin(result) * GetWidgetScaleFactor(aFrame)).Rounded();
}
bool nsNativeThemeGTK::GetWidgetPadding(nsDeviceContext* aContext,
nsIFrame* aFrame,
StyleAppearance aAppearance,
LayoutDeviceIntMargin* aResult) {
if (IsWidgetAlwaysNonNative(aFrame, aAppearance)) {
return Theme::GetWidgetPadding(aContext, aFrame, aAppearance, aResult);
}
switch (aAppearance) {
case StyleAppearance::Toolbarbutton:
aResult->SizeTo(0, 0, 0, 0);
return true;
default:
break;
}
return false;
}
bool nsNativeThemeGTK::GetWidgetOverflow(nsDeviceContext* aContext,
nsIFrame* aFrame,
StyleAppearance aAppearance,
nsRect* aOverflowRect) {
if (IsWidgetNonNative(aFrame, aAppearance) != NonNative::No) {
return Theme::GetWidgetOverflow(aContext, aFrame, aAppearance,
aOverflowRect);
}
return false;
}
auto nsNativeThemeGTK::IsWidgetNonNative(nsIFrame* aFrame,
StyleAppearance aAppearance)
-> NonNative {
if (IsWidgetAlwaysNonNative(aFrame, aAppearance)) {
return NonNative::Always;
}
// If the current GTK theme color scheme matches our color-scheme, then we
// can draw a native widget.
if (LookAndFeel::ColorSchemeForFrame(aFrame) ==
PreferenceSheet::ColorSchemeForChrome()) {
return NonNative::No;
}
// If the non-native theme doesn't support the widget then oh well...
if (!Theme::ThemeSupportsWidget(aFrame->PresContext(), aFrame, aAppearance)) {
return NonNative::No;
}
return NonNative::BecauseColorMismatch;
}
bool nsNativeThemeGTK::IsWidgetAlwaysNonNative(nsIFrame* aFrame,
StyleAppearance aAppearance) {
return Theme::IsWidgetAlwaysNonNative(aFrame, aAppearance) ||
aAppearance == StyleAppearance::MozMenulistArrowButton ||
aAppearance == StyleAppearance::Textfield ||
aAppearance == StyleAppearance::NumberInput ||
aAppearance == StyleAppearance::PasswordInput ||
aAppearance == StyleAppearance::Textarea ||
aAppearance == StyleAppearance::Checkbox ||
aAppearance == StyleAppearance::Radio ||
aAppearance == StyleAppearance::Button ||
aAppearance == StyleAppearance::Toolbarbutton ||
aAppearance == StyleAppearance::Listbox ||
aAppearance == StyleAppearance::Menulist ||
aAppearance == StyleAppearance::ProgressBar ||
aAppearance == StyleAppearance::Progresschunk ||
aAppearance == StyleAppearance::Range ||
aAppearance == StyleAppearance::RangeThumb;
}
LayoutDeviceIntSize nsNativeThemeGTK::GetMinimumWidgetSize(
nsPresContext* aPresContext, nsIFrame* aFrame,
StyleAppearance aAppearance) {
if (IsWidgetAlwaysNonNative(aFrame, aAppearance)) {
return Theme::GetMinimumWidgetSize(aPresContext, aFrame, aAppearance);
}
CSSIntSize result;
switch (aAppearance) {
case StyleAppearance::Splitter: {
if (IsHorizontal(aFrame)) {
moz_gtk_splitter_get_metrics(GTK_ORIENTATION_HORIZONTAL, &result.width);
} else {
moz_gtk_splitter_get_metrics(GTK_ORIENTATION_VERTICAL, &result.height);
}
} break;
default:
break;
}
return LayoutDeviceIntSize::Round(CSSSize(result) *
GetWidgetScaleFactor(aFrame));
}
bool nsNativeThemeGTK::WidgetAttributeChangeRequiresRepaint(
StyleAppearance aAppearance, nsAtom* aAttribute) {
// Some widget types just never change state.
if (aAppearance == StyleAppearance::Progresschunk ||
aAppearance == StyleAppearance::ProgressBar ||
aAppearance == StyleAppearance::MozWindowDecorations) {
return false;
}
return Theme::WidgetAttributeChangeRequiresRepaint(aAppearance, aAttribute);
}
NS_IMETHODIMP
nsNativeThemeGTK::ThemeChanged() {
memset(mDisabledWidgetTypes, 0, sizeof(mDisabledWidgetTypes));
memset(mSafeWidgetStates, 0, sizeof(mSafeWidgetStates));
memset(mBorderCacheValid, 0, sizeof(mBorderCacheValid));
return NS_OK;
}
NS_IMETHODIMP_(bool)
nsNativeThemeGTK::ThemeSupportsWidget(nsPresContext* aPresContext,
nsIFrame* aFrame,
StyleAppearance aAppearance) {
if (IsWidgetTypeDisabled(mDisabledWidgetTypes, aAppearance)) {
return false;
}
if (IsWidgetAlwaysNonNative(aFrame, aAppearance)) {
return Theme::ThemeSupportsWidget(aPresContext, aFrame, aAppearance);
}
switch (aAppearance) {
case StyleAppearance::Tab:
// case StyleAppearance::Tabpanel:
case StyleAppearance::Tabpanels:
case StyleAppearance::Splitter:
case StyleAppearance::MozWindowTitlebar:
case StyleAppearance::MozWindowTitlebarMaximized:
case StyleAppearance::MozWindowDecorations:
return !IsWidgetStyled(aPresContext, aFrame, aAppearance);
default:
break;
}
return false;
}
NS_IMETHODIMP_(bool)
nsNativeThemeGTK::WidgetIsContainer(StyleAppearance aAppearance) {
// XXXdwh At some point flesh all of this out.
return true;
}
bool nsNativeThemeGTK::ThemeDrawsFocusForWidget(nsIFrame* aFrame,
StyleAppearance aAppearance) {
if (IsWidgetNonNative(aFrame, aAppearance) != NonNative::No) {
return Theme::ThemeDrawsFocusForWidget(aFrame, aAppearance);
}
return false;
}
nsITheme::Transparency nsNativeThemeGTK::GetWidgetTransparency(
nsIFrame* aFrame, StyleAppearance aAppearance) {
if (IsWidgetNonNative(aFrame, aAppearance) != NonNative::No) {
return Theme::GetWidgetTransparency(aFrame, aAppearance);
}
return eUnknownTransparency;
}
already_AddRefed<Theme> do_CreateNativeThemeDoNotUseDirectly() {
if (gfxPlatform::IsHeadless()) {
return do_AddRef(new Theme(Theme::ScrollbarStyle()));
}
return do_AddRef(new nsNativeThemeGTK());
}
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