mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-11-10 18:00:15 +01:00
189 lines
8.4 KiB
C++
189 lines
8.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* The contents of this file are subject to the Mozilla Public License Version
|
|
* 1.1 (the "License"); you may not use this file except in compliance with
|
|
* the License. You may obtain a copy of the License at
|
|
* http://www.mozilla.org/MPL/
|
|
*
|
|
* Software distributed under the License is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
|
|
* for the specific language governing rights and limitations under the
|
|
* License.
|
|
*
|
|
* The Original Code is mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
#ifndef nsHTMLContainerFrame_h___
|
|
#define nsHTMLContainerFrame_h___
|
|
|
|
#include "nsContainerFrame.h"
|
|
class nsString;
|
|
class nsAbsoluteFrame;
|
|
class nsPlaceholderFrame;
|
|
struct nsStyleDisplay;
|
|
struct nsStylePosition;
|
|
struct nsHTMLReflowMetrics;
|
|
struct nsHTMLReflowState;
|
|
|
|
// Some macros for container classes to do sanity checking on
|
|
// width/height/x/y values computed during reflow.
|
|
#ifdef DEBUG
|
|
#define CRAZY_W 500000
|
|
|
|
// 100000 lines, approximately. Assumes p2t is 15 and 15 pixels per line
|
|
#define CRAZY_H 22500000
|
|
|
|
#define CRAZY_WIDTH(_x) (((_x) < -CRAZY_W) || ((_x) > CRAZY_W))
|
|
#define CRAZY_HEIGHT(_y) (((_y) < -CRAZY_H) || ((_y) > CRAZY_H))
|
|
#endif
|
|
|
|
// Base class for html container frames that provides common
|
|
// functionality.
|
|
class nsHTMLContainerFrame : public nsContainerFrame {
|
|
public:
|
|
NS_IMETHOD Paint(nsPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect,
|
|
nsFramePaintLayer aWhichLayer,
|
|
PRUint32 aFlags = 0);
|
|
|
|
/**
|
|
* Helper method to create next-in-flows if necessary. If aFrame
|
|
* already has a next-in-flow then this method does
|
|
* nothing. Otherwise, a new continuation frame is created and
|
|
* linked into the flow. In addition, the new frame becomes the
|
|
* next-sibling of aFrame. If aPlaceholderResult is not null and
|
|
* aFrame is a float or positioned, then *aPlaceholderResult holds
|
|
* a placeholder.
|
|
*/
|
|
static nsresult CreateNextInFlow(nsPresContext* aPresContext,
|
|
nsIFrame* aOuterFrame,
|
|
nsIFrame* aFrame,
|
|
nsIFrame*& aNextInFlowResult);
|
|
|
|
/**
|
|
* Helper method to wrap views around frames. Used by containers
|
|
* under special circumstances (can be used by leaf frames as well)
|
|
* @param aContentParentFrame
|
|
* if non-null, this is the frame
|
|
* which would have held aFrame except that aFrame was reparented
|
|
* to an alternative geometric parent. This is necessary
|
|
* so that aFrame can remember to get its Z-order from
|
|
* aContentParentFrame.
|
|
*/
|
|
static nsresult CreateViewForFrame(nsIFrame* aFrame,
|
|
nsIFrame* aContentParentFrame,
|
|
PRBool aForce);
|
|
|
|
static nsresult ReparentFrameView(nsPresContext* aPresContext,
|
|
nsIFrame* aChildFrame,
|
|
nsIFrame* aOldParentFrame,
|
|
nsIFrame* aNewParentFrame);
|
|
|
|
static nsresult ReparentFrameViewList(nsPresContext* aPresContext,
|
|
nsIFrame* aChildFrameList,
|
|
nsIFrame* aOldParentFrame,
|
|
nsIFrame* aNewParentFrame);
|
|
|
|
protected:
|
|
virtual PRIntn GetSkipSides() const = 0;
|
|
|
|
void PaintSelf(nsPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect) {
|
|
nsContainerFrame::PaintSelf(aPresContext, aRenderingContext,
|
|
aDirtyRect, GetSkipSides());
|
|
}
|
|
|
|
/**
|
|
* To be called *instead* of |PaintChildren| by frames that paint text
|
|
* decorations (block and inline frames). It will paint the
|
|
* decorations before and after the call to PaintChildren.
|
|
*/
|
|
void PaintDecorationsAndChildren(nsPresContext* aPresContext,
|
|
nsIRenderingContext& aRenderingContext,
|
|
const nsRect& aDirtyRect,
|
|
nsFramePaintLayer aWhichLayer,
|
|
PRBool aIsBlock,
|
|
PRUint32 aFlags = 0);
|
|
|
|
/**
|
|
* Helper function to paint text decorations for this frame. This
|
|
* function attempts to be general; hopefully particular frames can
|
|
* get away with overriding PaintTextDecorationLines. The function
|
|
* should be called for one text-decoration at the time. This is so
|
|
* line-through can be painted in front of children, while the other
|
|
* decorations can be drawn behind.
|
|
*/
|
|
void PaintTextDecorations(nsIRenderingContext& aRenderingContext,
|
|
nsIFontMetrics* aFontMetrics,
|
|
PRUint8 aDecoration,
|
|
nscolor aColor);
|
|
|
|
/**
|
|
* Fetch the text decorations for this frame.
|
|
* @param aIsBlock whether |this| is a block frame or no.
|
|
* @param aDecorations mask with all decorations.
|
|
* See bug 1777 and 20163 to understand how a
|
|
* frame can end up with several decorations.
|
|
* @param aUnderColor The color of underline if the appropriate bit
|
|
* in aDecoration is set. It is undefined otherwise.
|
|
* @param aOverColor The color of overline if the appropriate bit
|
|
* in aDecoration is set. It is undefined otherwise.
|
|
* @param aStrikeColor The color of strike-through if the appropriate bit
|
|
* in aDecoration is set. It is undefined otherwise.
|
|
* NOTE: This function assigns NS_STYLE_TEXT_DECORATION_NONE to
|
|
* aDecorations for text-less frames. See bug 20163 for
|
|
* details.
|
|
*/
|
|
void GetTextDecorations(nsPresContext* aPresContext,
|
|
PRBool aIsBlock,
|
|
PRUint8& aDecorations,
|
|
nscolor& aUnderColor,
|
|
nscolor& aOverColor,
|
|
nscolor& aStrikeColor);
|
|
|
|
/**
|
|
* Function that does the actual drawing of the textdecoration.
|
|
* input:
|
|
* @param aRenderingContext.
|
|
* @param aColor the color of the text-decoration
|
|
* @param aAscent ascent of the font from which the
|
|
* text-decoration was derived.
|
|
* @param aOffset distance *above* baseline where the
|
|
* text-decoration should be drawn,
|
|
* i.e. negative offsets draws *below*
|
|
* the baseline.
|
|
* @param aSize the thickness of the line
|
|
*/
|
|
virtual void PaintTextDecorationLines(nsIRenderingContext& aRenderingContext,
|
|
nscolor aColor,
|
|
nscoord aOffset,
|
|
nscoord aAscent,
|
|
nscoord aSize);
|
|
|
|
};
|
|
|
|
#endif /* nsHTMLContainerFrame_h___ */
|