517 lines
15 KiB
C++
517 lines
15 KiB
C++
/* -*- Mode: C++; tab-width: 2; 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 "nsButtonFrameRenderer.h"
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#include "nsCSSRendering.h"
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#include "nsPresContext.h"
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#include "nsGkAtoms.h"
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#include "nsCSSPseudoElements.h"
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#include "nsNameSpaceManager.h"
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#include "mozilla/StyleSetHandle.h"
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#include "mozilla/StyleSetHandleInlines.h"
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#include "nsDisplayList.h"
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#include "nsITheme.h"
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#include "nsFrame.h"
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#include "mozilla/EventStates.h"
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#include "mozilla/dom/Element.h"
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#define ACTIVE "active"
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#define HOVER "hover"
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#define FOCUS "focus"
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using namespace mozilla;
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using namespace mozilla::image;
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nsButtonFrameRenderer::nsButtonFrameRenderer()
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{
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MOZ_COUNT_CTOR(nsButtonFrameRenderer);
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}
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nsButtonFrameRenderer::~nsButtonFrameRenderer()
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{
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MOZ_COUNT_DTOR(nsButtonFrameRenderer);
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#ifdef DEBUG
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if (mInnerFocusStyle) {
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mInnerFocusStyle->FrameRelease();
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}
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if (mOuterFocusStyle) {
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mOuterFocusStyle->FrameRelease();
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}
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#endif
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}
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void
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nsButtonFrameRenderer::SetFrame(nsFrame* aFrame, nsPresContext* aPresContext)
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{
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mFrame = aFrame;
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ReResolveStyles(aPresContext);
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}
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nsIFrame*
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nsButtonFrameRenderer::GetFrame()
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{
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return mFrame;
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}
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void
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nsButtonFrameRenderer::SetDisabled(bool aDisabled, bool notify)
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{
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if (aDisabled)
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mFrame->GetContent()->SetAttr(kNameSpaceID_None, nsGkAtoms::disabled, EmptyString(),
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notify);
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else
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mFrame->GetContent()->UnsetAttr(kNameSpaceID_None, nsGkAtoms::disabled, notify);
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}
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bool
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nsButtonFrameRenderer::isDisabled()
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{
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return mFrame->GetContent()->AsElement()->
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State().HasState(NS_EVENT_STATE_DISABLED);
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}
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class nsDisplayButtonBoxShadowOuter : public nsDisplayItem {
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public:
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nsDisplayButtonBoxShadowOuter(nsDisplayListBuilder* aBuilder,
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nsButtonFrameRenderer* aRenderer)
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: nsDisplayItem(aBuilder, aRenderer->GetFrame()), mBFR(aRenderer) {
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MOZ_COUNT_CTOR(nsDisplayButtonBoxShadowOuter);
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}
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#ifdef NS_BUILD_REFCNT_LOGGING
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virtual ~nsDisplayButtonBoxShadowOuter() {
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MOZ_COUNT_DTOR(nsDisplayButtonBoxShadowOuter);
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}
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#endif
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virtual void Paint(nsDisplayListBuilder* aBuilder,
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nsRenderingContext* aCtx) override;
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virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder,
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bool* aSnap) override;
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NS_DISPLAY_DECL_NAME("ButtonBoxShadowOuter", TYPE_BUTTON_BOX_SHADOW_OUTER)
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private:
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nsButtonFrameRenderer* mBFR;
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};
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nsRect
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nsDisplayButtonBoxShadowOuter::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) {
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*aSnap = false;
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return mFrame->GetVisualOverflowRectRelativeToSelf() + ToReferenceFrame();
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}
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void
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nsDisplayButtonBoxShadowOuter::Paint(nsDisplayListBuilder* aBuilder,
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nsRenderingContext* aCtx) {
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nsRect frameRect = nsRect(ToReferenceFrame(), mFrame->GetSize());
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nsRect buttonRect;
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mBFR->GetButtonRect(frameRect, buttonRect);
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nsCSSRendering::PaintBoxShadowOuter(mFrame->PresContext(), *aCtx, mFrame,
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buttonRect, mVisibleRect);
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}
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class nsDisplayButtonBorder : public nsDisplayItem {
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public:
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nsDisplayButtonBorder(nsDisplayListBuilder* aBuilder,
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nsButtonFrameRenderer* aRenderer)
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: nsDisplayItem(aBuilder, aRenderer->GetFrame()), mBFR(aRenderer) {
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MOZ_COUNT_CTOR(nsDisplayButtonBorder);
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}
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#ifdef NS_BUILD_REFCNT_LOGGING
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virtual ~nsDisplayButtonBorder() {
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MOZ_COUNT_DTOR(nsDisplayButtonBorder);
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}
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#endif
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virtual void HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
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HitTestState* aState,
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nsTArray<nsIFrame*> *aOutFrames) override {
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aOutFrames->AppendElement(mFrame);
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}
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virtual void Paint(nsDisplayListBuilder* aBuilder,
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nsRenderingContext* aCtx) override;
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virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder,
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bool* aSnap) override;
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virtual nsDisplayItemGeometry* AllocateGeometry(nsDisplayListBuilder* aBuilder) override;
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virtual void ComputeInvalidationRegion(nsDisplayListBuilder* aBuilder,
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const nsDisplayItemGeometry* aGeometry,
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nsRegion *aInvalidRegion) override;
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NS_DISPLAY_DECL_NAME("ButtonBorderBackground", TYPE_BUTTON_BORDER_BACKGROUND)
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private:
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nsButtonFrameRenderer* mBFR;
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};
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nsDisplayItemGeometry*
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nsDisplayButtonBorder::AllocateGeometry(nsDisplayListBuilder* aBuilder)
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{
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return new nsDisplayItemGenericImageGeometry(this, aBuilder);
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}
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void
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nsDisplayButtonBorder::ComputeInvalidationRegion(
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nsDisplayListBuilder* aBuilder,
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const nsDisplayItemGeometry* aGeometry,
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nsRegion *aInvalidRegion)
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{
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auto geometry =
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static_cast<const nsDisplayItemGenericImageGeometry*>(aGeometry);
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if (aBuilder->ShouldSyncDecodeImages() &&
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geometry->ShouldInvalidateToSyncDecodeImages()) {
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bool snap;
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aInvalidRegion->Or(*aInvalidRegion, GetBounds(aBuilder, &snap));
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}
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nsDisplayItem::ComputeInvalidationRegion(aBuilder, aGeometry, aInvalidRegion);
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}
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void nsDisplayButtonBorder::Paint(nsDisplayListBuilder* aBuilder,
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nsRenderingContext* aCtx)
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{
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NS_ASSERTION(mFrame, "No frame?");
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nsPresContext* pc = mFrame->PresContext();
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nsRect r = nsRect(ToReferenceFrame(), mFrame->GetSize());
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// draw the border and background inside the focus and outline borders
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DrawResult result =
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mBFR->PaintBorder(aBuilder, pc, *aCtx, mVisibleRect, r);
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nsDisplayItemGenericImageGeometry::UpdateDrawResult(this, result);
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}
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nsRect
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nsDisplayButtonBorder::GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) {
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*aSnap = false;
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return aBuilder->IsForEventDelivery() ? nsRect(ToReferenceFrame(), mFrame->GetSize())
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: mFrame->GetVisualOverflowRectRelativeToSelf() + ToReferenceFrame();
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}
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class nsDisplayButtonForeground : public nsDisplayItem {
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public:
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nsDisplayButtonForeground(nsDisplayListBuilder* aBuilder,
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nsButtonFrameRenderer* aRenderer)
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: nsDisplayItem(aBuilder, aRenderer->GetFrame()), mBFR(aRenderer) {
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MOZ_COUNT_CTOR(nsDisplayButtonForeground);
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}
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#ifdef NS_BUILD_REFCNT_LOGGING
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virtual ~nsDisplayButtonForeground() {
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MOZ_COUNT_DTOR(nsDisplayButtonForeground);
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}
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#endif
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nsDisplayItemGeometry* AllocateGeometry(nsDisplayListBuilder* aBuilder) override;
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void ComputeInvalidationRegion(nsDisplayListBuilder* aBuilder,
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const nsDisplayItemGeometry* aGeometry,
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nsRegion *aInvalidRegion) override;
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virtual void Paint(nsDisplayListBuilder* aBuilder,
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nsRenderingContext* aCtx) override;
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NS_DISPLAY_DECL_NAME("ButtonForeground", TYPE_BUTTON_FOREGROUND)
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private:
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nsButtonFrameRenderer* mBFR;
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};
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nsDisplayItemGeometry*
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nsDisplayButtonForeground::AllocateGeometry(nsDisplayListBuilder* aBuilder)
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{
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return new nsDisplayItemGenericImageGeometry(this, aBuilder);
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}
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void
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nsDisplayButtonForeground::ComputeInvalidationRegion(
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nsDisplayListBuilder* aBuilder,
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const nsDisplayItemGeometry* aGeometry,
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nsRegion* aInvalidRegion)
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{
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auto geometry =
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static_cast<const nsDisplayItemGenericImageGeometry*>(aGeometry);
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if (aBuilder->ShouldSyncDecodeImages() &&
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geometry->ShouldInvalidateToSyncDecodeImages()) {
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bool snap;
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aInvalidRegion->Or(*aInvalidRegion, GetBounds(aBuilder, &snap));
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}
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nsDisplayItem::ComputeInvalidationRegion(aBuilder, aGeometry, aInvalidRegion);
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}
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void nsDisplayButtonForeground::Paint(nsDisplayListBuilder* aBuilder,
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nsRenderingContext* aCtx)
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{
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nsPresContext *presContext = mFrame->PresContext();
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const nsStyleDisplay *disp = mFrame->StyleDisplay();
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if (!mFrame->IsThemed(disp) ||
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!presContext->GetTheme()->ThemeDrawsFocusForWidget(disp->mAppearance)) {
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nsRect r = nsRect(ToReferenceFrame(), mFrame->GetSize());
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// Draw the focus and outline borders.
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DrawResult result =
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mBFR->PaintOutlineAndFocusBorders(aBuilder, presContext, *aCtx,
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mVisibleRect, r);
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nsDisplayItemGenericImageGeometry::UpdateDrawResult(this, result);
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}
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}
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nsresult
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nsButtonFrameRenderer::DisplayButton(nsDisplayListBuilder* aBuilder,
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nsDisplayList* aBackground,
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nsDisplayList* aForeground)
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{
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if (mFrame->StyleEffects()->mBoxShadow) {
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aBackground->AppendNewToTop(new (aBuilder)
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nsDisplayButtonBoxShadowOuter(aBuilder, this));
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}
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nsRect buttonRect =
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mFrame->GetRectRelativeToSelf() + aBuilder->ToReferenceFrame(mFrame);
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nsDisplayBackgroundImage::AppendBackgroundItemsToTop(
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aBuilder, mFrame, buttonRect, aBackground);
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aBackground->AppendNewToTop(new (aBuilder)
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nsDisplayButtonBorder(aBuilder, this));
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// Only display focus rings if we actually have them. Since at most one
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// button would normally display a focus ring, most buttons won't have them.
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if ((mOuterFocusStyle && mOuterFocusStyle->StyleBorder()->HasBorder()) ||
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(mInnerFocusStyle && mInnerFocusStyle->StyleBorder()->HasBorder())) {
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aForeground->AppendNewToTop(new (aBuilder)
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nsDisplayButtonForeground(aBuilder, this));
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}
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return NS_OK;
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}
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DrawResult
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nsButtonFrameRenderer::PaintOutlineAndFocusBorders(
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nsDisplayListBuilder* aBuilder,
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nsPresContext* aPresContext,
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nsRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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const nsRect& aRect)
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{
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// once we have all that we'll draw the focus if we have it. We will
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// need to draw 2 focuses, the inner and the outer. This is so we
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// can do any kind of look and feel. Some buttons have focus on the
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// outside like mac and motif. While others like windows have it
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// inside (dotted line). Usually only one will be specifed. But I
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// guess you could have both if you wanted to.
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nsRect rect;
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PaintBorderFlags flags = aBuilder->ShouldSyncDecodeImages()
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? PaintBorderFlags::SYNC_DECODE_IMAGES
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: PaintBorderFlags();
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DrawResult result = DrawResult::SUCCESS;
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if (mOuterFocusStyle) {
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// ---------- paint the outer focus border -------------
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GetButtonOuterFocusRect(aRect, rect);
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result &=
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, mFrame,
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aDirtyRect, rect, mOuterFocusStyle, flags);
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}
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if (mInnerFocusStyle) {
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// ---------- paint the inner focus border -------------
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GetButtonInnerFocusRect(aRect, rect);
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result &=
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, mFrame,
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aDirtyRect, rect, mInnerFocusStyle, flags);
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}
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return result;
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}
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DrawResult
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nsButtonFrameRenderer::PaintBorder(
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nsDisplayListBuilder* aBuilder,
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nsPresContext* aPresContext,
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nsRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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const nsRect& aRect)
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{
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// get the button rect this is inside the focus and outline rects
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nsRect buttonRect;
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GetButtonRect(aRect, buttonRect);
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nsStyleContext* context = mFrame->StyleContext();
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PaintBorderFlags borderFlags = aBuilder->ShouldSyncDecodeImages()
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? PaintBorderFlags::SYNC_DECODE_IMAGES
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: PaintBorderFlags();
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nsCSSRendering::PaintBoxShadowInner(aPresContext, aRenderingContext,
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mFrame, buttonRect);
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DrawResult result =
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, mFrame,
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aDirtyRect, buttonRect, context, borderFlags);
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return result;
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}
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void
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nsButtonFrameRenderer::GetButtonOuterFocusRect(const nsRect& aRect, nsRect& focusRect)
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{
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focusRect = aRect;
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}
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void
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nsButtonFrameRenderer::GetButtonRect(const nsRect& aRect, nsRect& r)
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{
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r = aRect;
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r.Deflate(GetButtonOuterFocusBorderAndPadding());
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}
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void
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nsButtonFrameRenderer::GetButtonInnerFocusRect(const nsRect& aRect, nsRect& focusRect)
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{
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GetButtonRect(aRect, focusRect);
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focusRect.Deflate(GetButtonBorderAndPadding());
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focusRect.Deflate(GetButtonInnerFocusMargin());
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}
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nsMargin
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nsButtonFrameRenderer::GetButtonOuterFocusBorderAndPadding()
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{
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nsMargin result(0,0,0,0);
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if (mOuterFocusStyle) {
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mOuterFocusStyle->StylePadding()->GetPadding(result);
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result += mOuterFocusStyle->StyleBorder()->GetComputedBorder();
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}
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return result;
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}
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nsMargin
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nsButtonFrameRenderer::GetButtonBorderAndPadding()
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{
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return mFrame->GetUsedBorderAndPadding();
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}
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/**
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* Gets the size of the buttons border this is the union of the normal and disabled borders.
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*/
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nsMargin
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nsButtonFrameRenderer::GetButtonInnerFocusMargin()
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{
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nsMargin innerFocusMargin(0,0,0,0);
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if (mInnerFocusStyle) {
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const nsStyleMargin* margin = mInnerFocusStyle->StyleMargin();
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margin->GetMargin(innerFocusMargin);
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}
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return innerFocusMargin;
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}
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nsMargin
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nsButtonFrameRenderer::GetButtonInnerFocusBorderAndPadding()
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{
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nsMargin result(0,0,0,0);
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if (mInnerFocusStyle) {
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mInnerFocusStyle->StylePadding()->GetPadding(result);
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result += mInnerFocusStyle->StyleBorder()->GetComputedBorder();
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}
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return result;
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}
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// gets all the focus borders and padding that will be added to the regular border
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nsMargin
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nsButtonFrameRenderer::GetAddedButtonBorderAndPadding()
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{
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return GetButtonOuterFocusBorderAndPadding() + GetButtonInnerFocusMargin() + GetButtonInnerFocusBorderAndPadding();
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}
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/**
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* Call this when styles change
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*/
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void
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nsButtonFrameRenderer::ReResolveStyles(nsPresContext* aPresContext)
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{
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// get all the styles
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nsStyleContext* context = mFrame->StyleContext();
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StyleSetHandle styleSet = aPresContext->StyleSet();
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#ifdef DEBUG
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if (mInnerFocusStyle) {
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mInnerFocusStyle->FrameRelease();
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}
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if (mOuterFocusStyle) {
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mOuterFocusStyle->FrameRelease();
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}
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#endif
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// style for the inner such as a dotted line (Windows)
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mInnerFocusStyle =
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styleSet->ProbePseudoElementStyle(mFrame->GetContent()->AsElement(),
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CSSPseudoElementType::mozFocusInner,
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context);
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// style for outer focus like a ridged border (MAC).
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mOuterFocusStyle =
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styleSet->ProbePseudoElementStyle(mFrame->GetContent()->AsElement(),
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CSSPseudoElementType::mozFocusOuter,
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context);
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#ifdef DEBUG
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if (mInnerFocusStyle) {
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mInnerFocusStyle->FrameAddRef();
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}
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if (mOuterFocusStyle) {
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mOuterFocusStyle->FrameAddRef();
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}
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#endif
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}
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nsStyleContext*
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nsButtonFrameRenderer::GetStyleContext(int32_t aIndex) const
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{
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switch (aIndex) {
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case NS_BUTTON_RENDERER_FOCUS_INNER_CONTEXT_INDEX:
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return mInnerFocusStyle;
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case NS_BUTTON_RENDERER_FOCUS_OUTER_CONTEXT_INDEX:
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return mOuterFocusStyle;
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default:
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return nullptr;
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}
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}
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void
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nsButtonFrameRenderer::SetStyleContext(int32_t aIndex, nsStyleContext* aStyleContext)
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{
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switch (aIndex) {
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case NS_BUTTON_RENDERER_FOCUS_INNER_CONTEXT_INDEX:
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#ifdef DEBUG
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if (mInnerFocusStyle) {
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mInnerFocusStyle->FrameRelease();
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}
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#endif
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mInnerFocusStyle = aStyleContext;
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break;
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case NS_BUTTON_RENDERER_FOCUS_OUTER_CONTEXT_INDEX:
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#ifdef DEBUG
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if (mOuterFocusStyle) {
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mOuterFocusStyle->FrameRelease();
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}
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#endif
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mOuterFocusStyle = aStyleContext;
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break;
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}
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#ifdef DEBUG
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aStyleContext->FrameAddRef();
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#endif
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}
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