mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-25 05:41:12 +00:00
a43cae175a
This patch adds the struct as a parameter to various functions. The struct is cached in ReflowInput so that we don't need to pass it down to the internal method where nsIFrame::ComputeSize() is called. In the subsequent patches, we'll use it to revise the implementation of flex container's flex base size resolution, and size overrides. Differential Revision: https://phabricator.services.mozilla.com/D101793
92 lines
3.2 KiB
C++
92 lines
3.2 KiB
C++
/* -*- 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;
|
|
|
|
virtual bool IsFrameOfType(uint32_t aFlags) const override {
|
|
// We don't actually contain a block, but we do always want a
|
|
// computed width, so tell a little white lie here.
|
|
return nsIFrame::IsFrameOfType(aFlags &
|
|
~(nsIFrame::eReplacedContainsBlock));
|
|
}
|
|
|
|
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___ */
|