From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- layout/generic/nsLeafFrame.h | 84 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 layout/generic/nsLeafFrame.h (limited to 'layout/generic/nsLeafFrame.h') diff --git a/layout/generic/nsLeafFrame.h b/layout/generic/nsLeafFrame.h new file mode 100644 index 0000000000..c8275f0eef --- /dev/null +++ b/layout/generic/nsLeafFrame.h @@ -0,0 +1,84 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* 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/. */ + +/* base class for rendering objects that do not have child lists */ + +#ifndef nsLeafFrame_h___ +#define nsLeafFrame_h___ + +#include "mozilla/Attributes.h" +#include "nsIFrame.h" +#include "nsDisplayList.h" + +/** + * Abstract class that provides simple fixed-size layout for leaf objects + * (e.g. images, form elements, etc.). Deriviations provide the implementation + * of the GetDesiredSize method. The rendering method knows how to render + * borders and backgrounds. + */ +class nsLeafFrame : public nsIFrame { + public: + NS_DECL_ABSTRACT_FRAME(nsLeafFrame) + + // nsIFrame replacements + void BuildDisplayList(nsDisplayListBuilder* aBuilder, + const nsDisplayListSet& aLists) override; + + /** + * Both GetMinISize and GetPrefISize will return whatever GetIntrinsicISize + * returns. + */ + virtual nscoord GetMinISize(gfxContext* aRenderingContext) override; + virtual nscoord GetPrefISize(gfxContext* aRenderingContext) override; + + /** + * Our auto size is just intrinsic width and intrinsic height. + */ + mozilla::LogicalSize ComputeAutoSize( + gfxContext* aRenderingContext, mozilla::WritingMode aWM, + const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize, + const mozilla::LogicalSize& aMargin, + const mozilla::LogicalSize& aBorderPadding, + const mozilla::StyleSizeOverrides& aSizeOverrides, + mozilla::ComputeSizeFlags aFlags) override; + + /** + * Each of our subclasses should provide its own Reflow impl: + */ + virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize, + const ReflowInput& aReflowInput, + nsReflowStatus& aStatus) override = 0; + + protected: + nsLeafFrame(ComputedStyle* aStyle, nsPresContext* aPresContext, ClassID aID) + : nsIFrame(aStyle, aPresContext, aID) {} + + virtual ~nsLeafFrame(); + + /** + * Return the intrinsic isize of the frame's content area. Note that this + * should not include borders or padding and should not depend on the applied + * styles. + */ + virtual nscoord GetIntrinsicISize() = 0; + + /** + * Return the intrinsic bsize of the frame's content area. This should not + * include border or padding. This will only matter if the specified bsize + * is auto. Note that subclasses must either implement this or override + * Reflow and ComputeAutoSize; the default Reflow and ComputeAutoSize impls + * call this method. + */ + virtual nscoord GetIntrinsicBSize(); + + /** + * Set aDesiredSize to be the available size + */ + void SizeToAvailSize(const ReflowInput& aReflowInput, + ReflowOutput& aDesiredSize); +}; + +#endif /* nsLeafFrame_h___ */ -- cgit v1.2.3