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-rw-r--r--widget/nsNativeTheme.cpp775
1 files changed, 775 insertions, 0 deletions
diff --git a/widget/nsNativeTheme.cpp b/widget/nsNativeTheme.cpp
new file mode 100644
index 000000000..a5bd85faf
--- /dev/null
+++ b/widget/nsNativeTheme.cpp
@@ -0,0 +1,775 @@
+/* -*- 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 "nsNativeTheme.h"
+#include "nsIWidget.h"
+#include "nsIDocument.h"
+#include "nsIContent.h"
+#include "nsIFrame.h"
+#include "nsIPresShell.h"
+#include "nsNumberControlFrame.h"
+#include "nsPresContext.h"
+#include "nsString.h"
+#include "nsNameSpaceManager.h"
+#include "nsIDOMHTMLInputElement.h"
+#include "nsIDOMXULMenuListElement.h"
+#include "nsThemeConstants.h"
+#include "nsIComponentManager.h"
+#include "nsPIDOMWindow.h"
+#include "nsProgressFrame.h"
+#include "nsMeterFrame.h"
+#include "nsMenuFrame.h"
+#include "nsRangeFrame.h"
+#include "nsCSSRendering.h"
+#include "mozilla/EventStates.h"
+#include "mozilla/dom/Element.h"
+#include "mozilla/dom/HTMLBodyElement.h"
+#include "mozilla/dom/HTMLProgressElement.h"
+#include "nsIDocumentInlines.h"
+#include <algorithm>
+
+using namespace mozilla;
+using namespace mozilla::dom;
+
+nsNativeTheme::nsNativeTheme()
+: mAnimatedContentTimeout(UINT32_MAX)
+{
+}
+
+NS_IMPL_ISUPPORTS(nsNativeTheme, nsITimerCallback)
+
+nsIPresShell *
+nsNativeTheme::GetPresShell(nsIFrame* aFrame)
+{
+ if (!aFrame)
+ return nullptr;
+
+ nsPresContext* context = aFrame->PresContext();
+ return context ? context->GetPresShell() : nullptr;
+}
+
+EventStates
+nsNativeTheme::GetContentState(nsIFrame* aFrame, uint8_t aWidgetType)
+{
+ if (!aFrame)
+ return EventStates();
+
+ bool isXULCheckboxRadio =
+ (aWidgetType == NS_THEME_CHECKBOX ||
+ aWidgetType == NS_THEME_RADIO) &&
+ aFrame->GetContent()->IsXULElement();
+ if (isXULCheckboxRadio)
+ aFrame = aFrame->GetParent();
+
+ if (!aFrame->GetContent())
+ return EventStates();
+
+ nsIPresShell *shell = GetPresShell(aFrame);
+ if (!shell)
+ return EventStates();
+
+ nsIContent* frameContent = aFrame->GetContent();
+ EventStates flags;
+ if (frameContent->IsElement()) {
+ flags = frameContent->AsElement()->State();
+
+ // <input type=number> needs special handling since its nested native
+ // anonymous <input type=text> takes focus for it.
+ if (aWidgetType == NS_THEME_NUMBER_INPUT &&
+ frameContent->IsHTMLElement(nsGkAtoms::input)) {
+ nsNumberControlFrame *numberControlFrame = do_QueryFrame(aFrame);
+ if (numberControlFrame && numberControlFrame->IsFocused()) {
+ flags |= NS_EVENT_STATE_FOCUS;
+ }
+ }
+
+ nsNumberControlFrame* numberControlFrame =
+ nsNumberControlFrame::GetNumberControlFrameForSpinButton(aFrame);
+ if (numberControlFrame &&
+ numberControlFrame->GetContent()->AsElement()->State().
+ HasState(NS_EVENT_STATE_DISABLED)) {
+ flags |= NS_EVENT_STATE_DISABLED;
+ }
+ }
+
+ if (isXULCheckboxRadio && aWidgetType == NS_THEME_RADIO) {
+ if (IsFocused(aFrame))
+ flags |= NS_EVENT_STATE_FOCUS;
+ }
+
+ // On Windows and Mac, only draw focus rings if they should be shown. This
+ // means that focus rings are only shown once the keyboard has been used to
+ // focus something in the window.
+#if defined(XP_MACOSX)
+ // Mac always draws focus rings for textboxes and lists.
+ if (aWidgetType == NS_THEME_NUMBER_INPUT ||
+ aWidgetType == NS_THEME_TEXTFIELD ||
+ aWidgetType == NS_THEME_TEXTFIELD_MULTILINE ||
+ aWidgetType == NS_THEME_SEARCHFIELD ||
+ aWidgetType == NS_THEME_LISTBOX) {
+ return flags;
+ }
+#endif
+#if defined(XP_WIN)
+ // On Windows, focused buttons are always drawn as such by the native theme.
+ if (aWidgetType == NS_THEME_BUTTON)
+ return flags;
+#endif
+#if defined(XP_MACOSX) || defined(XP_WIN)
+ nsIDocument* doc = aFrame->GetContent()->OwnerDoc();
+ nsPIDOMWindowOuter* window = doc->GetWindow();
+ if (window && !window->ShouldShowFocusRing())
+ flags &= ~NS_EVENT_STATE_FOCUS;
+#endif
+
+ return flags;
+}
+
+/* static */
+bool
+nsNativeTheme::CheckBooleanAttr(nsIFrame* aFrame, nsIAtom* aAtom)
+{
+ if (!aFrame)
+ return false;
+
+ nsIContent* content = aFrame->GetContent();
+ if (!content)
+ return false;
+
+ if (content->IsHTMLElement())
+ return content->HasAttr(kNameSpaceID_None, aAtom);
+
+ // For XML/XUL elements, an attribute must be equal to the literal
+ // string "true" to be counted as true. An empty string should _not_
+ // be counted as true.
+ return content->AttrValueIs(kNameSpaceID_None, aAtom,
+ NS_LITERAL_STRING("true"), eCaseMatters);
+}
+
+/* static */
+int32_t
+nsNativeTheme::CheckIntAttr(nsIFrame* aFrame, nsIAtom* aAtom, int32_t defaultValue)
+{
+ if (!aFrame)
+ return defaultValue;
+
+ nsAutoString attr;
+ aFrame->GetContent()->GetAttr(kNameSpaceID_None, aAtom, attr);
+ nsresult err;
+ int32_t value = attr.ToInteger(&err);
+ if (attr.IsEmpty() || NS_FAILED(err))
+ return defaultValue;
+
+ return value;
+}
+
+/* static */
+double
+nsNativeTheme::GetProgressValue(nsIFrame* aFrame)
+{
+ // When we are using the HTML progress element,
+ // we can get the value from the IDL property.
+ if (aFrame && aFrame->GetContent()->IsHTMLElement(nsGkAtoms::progress)) {
+ return static_cast<HTMLProgressElement*>(aFrame->GetContent())->Value();
+ }
+
+ return (double)nsNativeTheme::CheckIntAttr(aFrame, nsGkAtoms::value, 0);
+}
+
+/* static */
+double
+nsNativeTheme::GetProgressMaxValue(nsIFrame* aFrame)
+{
+ // When we are using the HTML progress element,
+ // we can get the max from the IDL property.
+ if (aFrame && aFrame->GetContent()->IsHTMLElement(nsGkAtoms::progress)) {
+ return static_cast<HTMLProgressElement*>(aFrame->GetContent())->Max();
+ }
+
+ return (double)std::max(nsNativeTheme::CheckIntAttr(aFrame, nsGkAtoms::max, 100), 1);
+}
+
+bool
+nsNativeTheme::GetCheckedOrSelected(nsIFrame* aFrame, bool aCheckSelected)
+{
+ if (!aFrame)
+ return false;
+
+ nsIContent* content = aFrame->GetContent();
+
+ if (content->IsXULElement()) {
+ // For a XUL checkbox or radio button, the state of the parent determines
+ // the checked state
+ aFrame = aFrame->GetParent();
+ } else {
+ // Check for an HTML input element
+ nsCOMPtr<nsIDOMHTMLInputElement> inputElt = do_QueryInterface(content);
+ if (inputElt) {
+ bool checked;
+ inputElt->GetChecked(&checked);
+ return checked;
+ }
+ }
+
+ return CheckBooleanAttr(aFrame, aCheckSelected ? nsGkAtoms::selected
+ : nsGkAtoms::checked);
+}
+
+bool
+nsNativeTheme::IsButtonTypeMenu(nsIFrame* aFrame)
+{
+ if (!aFrame)
+ return false;
+
+ nsIContent* content = aFrame->GetContent();
+ return content->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
+ NS_LITERAL_STRING("menu"), eCaseMatters);
+}
+
+bool
+nsNativeTheme::IsPressedButton(nsIFrame* aFrame)
+{
+ EventStates eventState = GetContentState(aFrame, NS_THEME_TOOLBARBUTTON);
+ if (IsDisabled(aFrame, eventState))
+ return false;
+
+ return IsOpenButton(aFrame) ||
+ eventState.HasAllStates(NS_EVENT_STATE_ACTIVE | NS_EVENT_STATE_HOVER);
+}
+
+
+bool
+nsNativeTheme::GetIndeterminate(nsIFrame* aFrame)
+{
+ if (!aFrame)
+ return false;
+
+ nsIContent* content = aFrame->GetContent();
+
+ if (content->IsXULElement()) {
+ // For a XUL checkbox or radio button, the state of the parent determines
+ // the state
+ return CheckBooleanAttr(aFrame->GetParent(), nsGkAtoms::indeterminate);
+ }
+
+ // Check for an HTML input element
+ nsCOMPtr<nsIDOMHTMLInputElement> inputElt = do_QueryInterface(content);
+ if (inputElt) {
+ bool indeterminate;
+ inputElt->GetIndeterminate(&indeterminate);
+ return indeterminate;
+ }
+
+ return false;
+}
+
+bool
+nsNativeTheme::IsWidgetStyled(nsPresContext* aPresContext, nsIFrame* aFrame,
+ uint8_t aWidgetType)
+{
+ // Check for specific widgets to see if HTML has overridden the style.
+ if (!aFrame)
+ return false;
+
+ // Resizers have some special handling, dependent on whether in a scrollable
+ // container or not. If so, use the scrollable container's to determine
+ // whether the style is overriden instead of the resizer. This allows a
+ // non-native transparent resizer to be used instead. Otherwise, we just
+ // fall through and return false.
+ if (aWidgetType == NS_THEME_RESIZER) {
+ nsIFrame* parentFrame = aFrame->GetParent();
+ if (parentFrame && parentFrame->GetType() == nsGkAtoms::scrollFrame) {
+ // if the parent is a scrollframe, the resizer should be native themed
+ // only if the scrollable area doesn't override the widget style.
+ parentFrame = parentFrame->GetParent();
+ if (parentFrame) {
+ return IsWidgetStyled(aPresContext, parentFrame,
+ parentFrame->StyleDisplay()->mAppearance);
+ }
+ }
+ }
+
+ /**
+ * Progress bar appearance should be the same for the bar and the container
+ * frame. nsProgressFrame owns the logic and will tell us what we should do.
+ */
+ if (aWidgetType == NS_THEME_PROGRESSCHUNK ||
+ aWidgetType == NS_THEME_PROGRESSBAR) {
+ nsProgressFrame* progressFrame = do_QueryFrame(aWidgetType == NS_THEME_PROGRESSCHUNK
+ ? aFrame->GetParent() : aFrame);
+ if (progressFrame) {
+ return !progressFrame->ShouldUseNativeStyle();
+ }
+ }
+
+ /**
+ * Meter bar appearance should be the same for the bar and the container
+ * frame. nsMeterFrame owns the logic and will tell us what we should do.
+ */
+ if (aWidgetType == NS_THEME_METERCHUNK ||
+ aWidgetType == NS_THEME_METERBAR) {
+ nsMeterFrame* meterFrame = do_QueryFrame(aWidgetType == NS_THEME_METERCHUNK
+ ? aFrame->GetParent() : aFrame);
+ if (meterFrame) {
+ return !meterFrame->ShouldUseNativeStyle();
+ }
+ }
+
+ /**
+ * An nsRangeFrame and its children are treated atomically when it
+ * comes to native theming (either all parts, or no parts, are themed).
+ * nsRangeFrame owns the logic and will tell us what we should do.
+ */
+ if (aWidgetType == NS_THEME_RANGE ||
+ aWidgetType == NS_THEME_RANGE_THUMB) {
+ nsRangeFrame* rangeFrame =
+ do_QueryFrame(aWidgetType == NS_THEME_RANGE_THUMB
+ ? aFrame->GetParent() : aFrame);
+ if (rangeFrame) {
+ return !rangeFrame->ShouldUseNativeStyle();
+ }
+ }
+
+ if (aWidgetType == NS_THEME_SPINNER_UPBUTTON ||
+ aWidgetType == NS_THEME_SPINNER_DOWNBUTTON) {
+ nsNumberControlFrame* numberControlFrame =
+ nsNumberControlFrame::GetNumberControlFrameForSpinButton(aFrame);
+ if (numberControlFrame) {
+ return !numberControlFrame->ShouldUseNativeStyleForSpinner();
+ }
+ }
+
+ return (aWidgetType == NS_THEME_NUMBER_INPUT ||
+ aWidgetType == NS_THEME_BUTTON ||
+ aWidgetType == NS_THEME_TEXTFIELD ||
+ aWidgetType == NS_THEME_TEXTFIELD_MULTILINE ||
+ aWidgetType == NS_THEME_LISTBOX ||
+ aWidgetType == NS_THEME_MENULIST) &&
+ aFrame->GetContent()->IsHTMLElement() &&
+ aPresContext->HasAuthorSpecifiedRules(aFrame,
+ NS_AUTHOR_SPECIFIED_BORDER |
+ NS_AUTHOR_SPECIFIED_BACKGROUND);
+}
+
+bool
+nsNativeTheme::IsDisabled(nsIFrame* aFrame, EventStates aEventStates)
+{
+ if (!aFrame) {
+ return false;
+ }
+
+ nsIContent* content = aFrame->GetContent();
+ if (!content) {
+ return false;
+ }
+
+ if (content->IsHTMLElement()) {
+ return aEventStates.HasState(NS_EVENT_STATE_DISABLED);
+ }
+
+ // For XML/XUL elements, an attribute must be equal to the literal
+ // string "true" to be counted as true. An empty string should _not_
+ // be counted as true.
+ return content->AttrValueIs(kNameSpaceID_None, nsGkAtoms::disabled,
+ NS_LITERAL_STRING("true"), eCaseMatters);
+}
+
+/* static */ bool
+nsNativeTheme::IsFrameRTL(nsIFrame* aFrame)
+{
+ if (!aFrame) {
+ return false;
+ }
+ WritingMode wm = aFrame->GetWritingMode();
+ return !(wm.IsVertical() ? wm.IsVerticalLR() : wm.IsBidiLTR());
+}
+
+bool
+nsNativeTheme::IsHTMLContent(nsIFrame *aFrame)
+{
+ if (!aFrame) {
+ return false;
+ }
+ nsIContent* content = aFrame->GetContent();
+ return content && content->IsHTMLElement();
+}
+
+
+// scrollbar button:
+int32_t
+nsNativeTheme::GetScrollbarButtonType(nsIFrame* aFrame)
+{
+ if (!aFrame)
+ return 0;
+
+ static nsIContent::AttrValuesArray strings[] =
+ {&nsGkAtoms::scrollbarDownBottom, &nsGkAtoms::scrollbarDownTop,
+ &nsGkAtoms::scrollbarUpBottom, &nsGkAtoms::scrollbarUpTop,
+ nullptr};
+
+ switch (aFrame->GetContent()->FindAttrValueIn(kNameSpaceID_None,
+ nsGkAtoms::sbattr,
+ strings, eCaseMatters)) {
+ case 0: return eScrollbarButton_Down | eScrollbarButton_Bottom;
+ case 1: return eScrollbarButton_Down;
+ case 2: return eScrollbarButton_Bottom;
+ case 3: return eScrollbarButton_UpTop;
+ }
+
+ return 0;
+}
+
+// treeheadercell:
+nsNativeTheme::TreeSortDirection
+nsNativeTheme::GetTreeSortDirection(nsIFrame* aFrame)
+{
+ if (!aFrame || !aFrame->GetContent())
+ return eTreeSortDirection_Natural;
+
+ static nsIContent::AttrValuesArray strings[] =
+ {&nsGkAtoms::descending, &nsGkAtoms::ascending, nullptr};
+ switch (aFrame->GetContent()->FindAttrValueIn(kNameSpaceID_None,
+ nsGkAtoms::sortDirection,
+ strings, eCaseMatters)) {
+ case 0: return eTreeSortDirection_Descending;
+ case 1: return eTreeSortDirection_Ascending;
+ }
+
+ return eTreeSortDirection_Natural;
+}
+
+bool
+nsNativeTheme::IsLastTreeHeaderCell(nsIFrame* aFrame)
+{
+ if (!aFrame)
+ return false;
+
+ // A tree column picker is always the last header cell.
+ if (aFrame->GetContent()->IsXULElement(nsGkAtoms::treecolpicker))
+ return true;
+
+ // Find the parent tree.
+ nsIContent* parent = aFrame->GetContent()->GetParent();
+ while (parent && !parent->IsXULElement(nsGkAtoms::tree)) {
+ parent = parent->GetParent();
+ }
+
+ // If the column picker is visible, this can't be the last column.
+ if (parent && !parent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::hidecolumnpicker,
+ NS_LITERAL_STRING("true"), eCaseMatters))
+ return false;
+
+ while ((aFrame = aFrame->GetNextSibling())) {
+ if (aFrame->GetRect().width > 0)
+ return false;
+ }
+ return true;
+}
+
+// tab:
+bool
+nsNativeTheme::IsBottomTab(nsIFrame* aFrame)
+{
+ if (!aFrame)
+ return false;
+
+ nsAutoString classStr;
+ aFrame->GetContent()->GetAttr(kNameSpaceID_None, nsGkAtoms::_class, classStr);
+ return !classStr.IsEmpty() && classStr.Find("tab-bottom") != kNotFound;
+}
+
+bool
+nsNativeTheme::IsFirstTab(nsIFrame* aFrame)
+{
+ if (!aFrame)
+ return false;
+
+ for (nsIFrame* first : aFrame->GetParent()->PrincipalChildList()) {
+ if (first->GetRect().width > 0 &&
+ first->GetContent()->IsXULElement(nsGkAtoms::tab))
+ return (first == aFrame);
+ }
+ return false;
+}
+
+bool
+nsNativeTheme::IsHorizontal(nsIFrame* aFrame)
+{
+ if (!aFrame)
+ return false;
+
+ return !aFrame->GetContent()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::orient,
+ nsGkAtoms::vertical,
+ eCaseMatters);
+}
+
+bool
+nsNativeTheme::IsNextToSelectedTab(nsIFrame* aFrame, int32_t aOffset)
+{
+ if (!aFrame)
+ return false;
+
+ if (aOffset == 0)
+ return IsSelectedTab(aFrame);
+
+ int32_t thisTabIndex = -1, selectedTabIndex = -1;
+
+ nsIFrame* currentTab = aFrame->GetParent()->PrincipalChildList().FirstChild();
+ for (int32_t i = 0; currentTab; currentTab = currentTab->GetNextSibling()) {
+ if (currentTab->GetRect().width == 0)
+ continue;
+ if (aFrame == currentTab)
+ thisTabIndex = i;
+ if (IsSelectedTab(currentTab))
+ selectedTabIndex = i;
+ ++i;
+ }
+
+ if (thisTabIndex == -1 || selectedTabIndex == -1)
+ return false;
+
+ return (thisTabIndex - selectedTabIndex == aOffset);
+}
+
+// progressbar:
+bool
+nsNativeTheme::IsIndeterminateProgress(nsIFrame* aFrame,
+ EventStates aEventStates)
+{
+ if (!aFrame || !aFrame->GetContent())
+ return false;
+
+ if (aFrame->GetContent()->IsHTMLElement(nsGkAtoms::progress)) {
+ return aEventStates.HasState(NS_EVENT_STATE_INDETERMINATE);
+ }
+
+ return aFrame->GetContent()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::mode,
+ NS_LITERAL_STRING("undetermined"),
+ eCaseMatters);
+}
+
+bool
+nsNativeTheme::IsVerticalProgress(nsIFrame* aFrame)
+{
+ if (!aFrame) {
+ return false;
+ }
+ return IsVerticalMeter(aFrame);
+}
+
+bool
+nsNativeTheme::IsVerticalMeter(nsIFrame* aFrame)
+{
+ NS_PRECONDITION(aFrame, "You have to pass a non-null aFrame");
+ switch (aFrame->StyleDisplay()->mOrient) {
+ case StyleOrient::Horizontal:
+ return false;
+ case StyleOrient::Vertical:
+ return true;
+ case StyleOrient::Inline:
+ return aFrame->GetWritingMode().IsVertical();
+ case StyleOrient::Block:
+ return !aFrame->GetWritingMode().IsVertical();
+ }
+ NS_NOTREACHED("unexpected -moz-orient value");
+ return false;
+}
+
+// menupopup:
+bool
+nsNativeTheme::IsSubmenu(nsIFrame* aFrame, bool* aLeftOfParent)
+{
+ if (!aFrame)
+ return false;
+
+ nsIContent* parentContent = aFrame->GetContent()->GetParent();
+ if (!parentContent || !parentContent->IsXULElement(nsGkAtoms::menu))
+ return false;
+
+ nsIFrame* parent = aFrame;
+ while ((parent = parent->GetParent())) {
+ if (parent->GetContent() == parentContent) {
+ if (aLeftOfParent) {
+ LayoutDeviceIntRect selfBounds, parentBounds;
+ selfBounds = aFrame->GetNearestWidget()->GetScreenBounds();
+ parentBounds = parent->GetNearestWidget()->GetScreenBounds();
+ *aLeftOfParent = selfBounds.x < parentBounds.x;
+ }
+ return true;
+ }
+ }
+
+ return false;
+}
+
+bool
+nsNativeTheme::IsRegularMenuItem(nsIFrame *aFrame)
+{
+ nsMenuFrame *menuFrame = do_QueryFrame(aFrame);
+ return !(menuFrame && (menuFrame->IsOnMenuBar() ||
+ menuFrame->GetParentMenuListType() != eNotMenuList));
+}
+
+bool
+nsNativeTheme::IsMenuListEditable(nsIFrame *aFrame)
+{
+ bool isEditable = false;
+ nsCOMPtr<nsIDOMXULMenuListElement> menulist = do_QueryInterface(aFrame->GetContent());
+ if (menulist)
+ menulist->GetEditable(&isEditable);
+ return isEditable;
+}
+
+bool
+nsNativeTheme::QueueAnimatedContentForRefresh(nsIContent* aContent,
+ uint32_t aMinimumFrameRate)
+{
+ NS_ASSERTION(aContent, "Null pointer!");
+ NS_ASSERTION(aMinimumFrameRate, "aMinimumFrameRate must be non-zero!");
+ NS_ASSERTION(aMinimumFrameRate <= 1000,
+ "aMinimumFrameRate must be less than 1000!");
+
+ uint32_t timeout = 1000 / aMinimumFrameRate;
+ timeout = std::min(mAnimatedContentTimeout, timeout);
+
+ if (!mAnimatedContentTimer) {
+ mAnimatedContentTimer = do_CreateInstance(NS_TIMER_CONTRACTID);
+ NS_ENSURE_TRUE(mAnimatedContentTimer, false);
+ }
+
+ if (mAnimatedContentList.IsEmpty() || timeout != mAnimatedContentTimeout) {
+ nsresult rv;
+ if (!mAnimatedContentList.IsEmpty()) {
+ rv = mAnimatedContentTimer->Cancel();
+ NS_ENSURE_SUCCESS(rv, false);
+ }
+
+ rv = mAnimatedContentTimer->InitWithCallback(this, timeout,
+ nsITimer::TYPE_ONE_SHOT);
+ NS_ENSURE_SUCCESS(rv, false);
+
+ mAnimatedContentTimeout = timeout;
+ }
+
+ if (!mAnimatedContentList.AppendElement(aContent)) {
+ NS_WARNING("Out of memory!");
+ return false;
+ }
+
+ return true;
+}
+
+NS_IMETHODIMP
+nsNativeTheme::Notify(nsITimer* aTimer)
+{
+ NS_ASSERTION(aTimer == mAnimatedContentTimer, "Wrong timer!");
+
+ // XXX Assumes that calling nsIFrame::Invalidate won't reenter
+ // QueueAnimatedContentForRefresh.
+
+ uint32_t count = mAnimatedContentList.Length();
+ for (uint32_t index = 0; index < count; index++) {
+ nsIFrame* frame = mAnimatedContentList[index]->GetPrimaryFrame();
+ if (frame) {
+ frame->InvalidateFrame();
+ }
+ }
+
+ mAnimatedContentList.Clear();
+ mAnimatedContentTimeout = UINT32_MAX;
+ return NS_OK;
+}
+
+nsIFrame*
+nsNativeTheme::GetAdjacentSiblingFrameWithSameAppearance(nsIFrame* aFrame,
+ bool aNextSibling)
+{
+ if (!aFrame)
+ return nullptr;
+
+ // Find the next visible sibling.
+ nsIFrame* sibling = aFrame;
+ do {
+ sibling = aNextSibling ? sibling->GetNextSibling() : sibling->GetPrevSibling();
+ } while (sibling && sibling->GetRect().width == 0);
+
+ // Check same appearance and adjacency.
+ if (!sibling ||
+ sibling->StyleDisplay()->mAppearance != aFrame->StyleDisplay()->mAppearance ||
+ (sibling->GetRect().XMost() != aFrame->GetRect().x &&
+ aFrame->GetRect().XMost() != sibling->GetRect().x))
+ return nullptr;
+ return sibling;
+}
+
+bool
+nsNativeTheme::IsRangeHorizontal(nsIFrame* aFrame)
+{
+ nsIFrame* rangeFrame = aFrame;
+ if (rangeFrame->GetType() != nsGkAtoms::rangeFrame) {
+ // If the thumb's frame is passed in, get its range parent:
+ rangeFrame = aFrame->GetParent();
+ }
+ if (rangeFrame->GetType() == nsGkAtoms::rangeFrame) {
+ return static_cast<nsRangeFrame*>(rangeFrame)->IsHorizontal();
+ }
+ // Not actually a range frame - just use the ratio of the frame's size to
+ // decide:
+ return aFrame->GetSize().width >= aFrame->GetSize().height;
+}
+
+static nsIFrame*
+GetBodyFrame(nsIFrame* aCanvasFrame)
+{
+ nsIContent* content = aCanvasFrame->GetContent();
+ if (!content) {
+ return nullptr;
+ }
+ nsIDocument* document = content->OwnerDoc();
+ nsIContent* body = document->GetBodyElement();
+ if (!body) {
+ return nullptr;
+ }
+ return body->GetPrimaryFrame();
+}
+
+bool
+nsNativeTheme::IsDarkBackground(nsIFrame* aFrame)
+{
+ nsIScrollableFrame* scrollFrame = nullptr;
+ while (!scrollFrame && aFrame) {
+ scrollFrame = aFrame->GetScrollTargetFrame();
+ aFrame = aFrame->GetParent();
+ }
+ if (!scrollFrame)
+ return false;
+
+ nsIFrame* frame = scrollFrame->GetScrolledFrame();
+ if (nsCSSRendering::IsCanvasFrame(frame)) {
+ // For canvas frames, prefer to look at the body first, because the body
+ // background color is most likely what will be visible as the background
+ // color of the page, even if the html element has a different background
+ // color which prevents that of the body frame to propagate to the viewport.
+ nsIFrame* bodyFrame = GetBodyFrame(frame);
+ if (bodyFrame) {
+ frame = bodyFrame;
+ }
+ }
+ nsStyleContext* bgSC = nullptr;
+ if (!nsCSSRendering::FindBackground(frame, &bgSC) ||
+ bgSC->StyleBackground()->IsTransparent()) {
+ nsIFrame* backgroundFrame = nsCSSRendering::FindNonTransparentBackgroundFrame(frame, true);
+ nsCSSRendering::FindBackground(backgroundFrame, &bgSC);
+ }
+ if (bgSC) {
+ nscolor bgColor = bgSC->StyleBackground()->mBackgroundColor;
+ // Consider the background color dark if the sum of the r, g and b values is
+ // less than 384 in a semi-transparent document. This heuristic matches what
+ // WebKit does, and we can improve it later if needed.
+ return NS_GET_A(bgColor) > 127 &&
+ NS_GET_R(bgColor) + NS_GET_G(bgColor) + NS_GET_B(bgColor) < 384;
+ }
+ return false;
+}