зеркало из https://github.com/mozilla/gecko-dev.git
107 строки
4.0 KiB
C++
107 строки
4.0 KiB
C++
/* -*- Mode: C++; tab-width: 40; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsNativeBasicThemeAndroid.h"
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#include "mozilla/ClearOnShutdown.h"
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#include "nsStyleConsts.h"
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#include "nsIFrame.h"
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auto nsNativeBasicThemeAndroid::GetScrollbarSizes(nsPresContext* aPresContext,
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StyleScrollbarWidth aWidth,
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Overlay aOverlay)
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-> ScrollbarSizes {
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// We force auto-width scrollbars because scrollbars on android are already
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// thin enough.
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return nsNativeBasicTheme::GetScrollbarSizes(
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aPresContext, StyleScrollbarWidth::Auto, aOverlay);
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}
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NS_IMETHODIMP
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nsNativeBasicThemeAndroid::GetMinimumWidgetSize(
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nsPresContext* aPresContext, nsIFrame* aFrame, StyleAppearance aAppearance,
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mozilla::LayoutDeviceIntSize* aResult, bool* aIsOverridable) {
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if (!IsWidgetScrollbarPart(aAppearance)) {
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return nsNativeBasicTheme::GetMinimumWidgetSize(
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aPresContext, aFrame, aAppearance, aResult, aIsOverridable);
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}
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auto sizes =
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GetScrollbarSizes(aPresContext, StyleScrollbarWidth::Auto, Overlay::Yes);
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aResult->SizeTo(sizes.mHorizontal, sizes.mHorizontal);
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MOZ_ASSERT(sizes.mHorizontal == sizes.mVertical);
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*aIsOverridable = true;
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return NS_OK;
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}
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template <typename PaintBackendData>
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void nsNativeBasicThemeAndroid::DoPaintScrollbarThumb(
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PaintBackendData& aPaintData, const LayoutDeviceRect& aRect,
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bool aHorizontal, nsIFrame* aFrame, const ComputedStyle& aStyle,
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const EventStates& aElementState, const EventStates& aDocumentState,
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const Colors& aColors, DPIRatio aDpiRatio) {
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// TODO(emilio): Maybe do like macOS and draw a stroke?
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const auto color = ComputeScrollbarThumbColor(aFrame, aStyle, aElementState,
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aDocumentState, aColors);
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// Draw the thumb rect centered in the scrollbar.
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LayoutDeviceRect thumbRect(aRect);
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if (aHorizontal) {
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thumbRect.height *= 0.5f;
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thumbRect.y += thumbRect.height * 0.5f;
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} else {
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thumbRect.width *= 0.5f;
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thumbRect.x += thumbRect.width * 0.5f;
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}
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const LayoutDeviceCoord radius =
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(aHorizontal ? thumbRect.height : thumbRect.width) / 2.0f;
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PaintRoundedRectWithRadius(aPaintData, thumbRect, color,
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sRGBColor::White(0.0f), 0.0f, radius / aDpiRatio,
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aDpiRatio);
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}
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bool nsNativeBasicThemeAndroid::PaintScrollbarThumb(
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DrawTarget& aDt, const LayoutDeviceRect& aRect, bool aHorizontal,
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nsIFrame* aFrame, const ComputedStyle& aStyle,
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const EventStates& aElementState, const EventStates& aDocumentState,
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const Colors& aColors, DPIRatio aDpiRatio) {
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DoPaintScrollbarThumb(aDt, aRect, aHorizontal, aFrame, aStyle, aElementState,
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aDocumentState, aColors, aDpiRatio);
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return true;
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}
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bool nsNativeBasicThemeAndroid::PaintScrollbarThumb(
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WebRenderBackendData& aWrData, const LayoutDeviceRect& aRect,
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bool aHorizontal, nsIFrame* aFrame, const ComputedStyle& aStyle,
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const EventStates& aElementState, const EventStates& aDocumentState,
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const Colors& aColors, DPIRatio aDpiRatio) {
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DoPaintScrollbarThumb(aWrData, aRect, aHorizontal, aFrame, aStyle,
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aElementState, aDocumentState, aColors, aDpiRatio);
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return true;
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}
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already_AddRefed<nsITheme> do_GetAndroidNonNativeThemeDoNotUseDirectly() {
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static mozilla::StaticRefPtr<nsITheme> gInstance;
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if (MOZ_UNLIKELY(!gInstance)) {
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gInstance = new nsNativeBasicThemeAndroid();
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ClearOnShutdown(&gInstance);
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}
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return do_AddRef(gInstance);
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}
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#ifdef ANDROID
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already_AddRefed<nsITheme> do_GetBasicNativeThemeDoNotUseDirectly() {
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return do_GetAndroidNonNativeThemeDoNotUseDirectly();
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}
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already_AddRefed<nsITheme> do_GetNativeThemeDoNotUseDirectly() {
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// Android doesn't have a native theme.
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return do_GetBasicNativeThemeDoNotUseDirectly();
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}
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#endif
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