mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-07-08 02:10:14 +02:00
124 lines
4.3 KiB
C++
124 lines
4.3 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 Communicator client 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 nsBlockBandData_h___
|
|
#define nsBlockBandData_h___
|
|
|
|
#include "nsSpaceManager.h"
|
|
|
|
class nsPresContext;
|
|
|
|
// Number of builtin nsBandTrapezoid's
|
|
#define NS_BLOCK_BAND_DATA_TRAPS 6
|
|
|
|
/**
|
|
* Class used to manage processing of the space-manager band data.
|
|
* Provides HTML/CSS specific behavior to the raw data.
|
|
*/
|
|
class nsBlockBandData : public nsBandData {
|
|
public:
|
|
nsBlockBandData();
|
|
~nsBlockBandData();
|
|
|
|
// Initialize. This must be called before any of the other methods.
|
|
nsresult Init(nsSpaceManager* aSpaceManager, const nsSize& aSpace);
|
|
|
|
// Get some available space. Note that aY is relative to the current
|
|
// space manager translation.
|
|
nsresult GetAvailableSpace(nscoord aY, PRBool aRelaxHeightConstraint,
|
|
nsRect& aResult);
|
|
|
|
// Get the raw trapezoid count for this band.
|
|
PRInt32 GetTrapezoidCount() const {
|
|
return mCount;
|
|
}
|
|
|
|
const nsBandTrapezoid* GetTrapezoid(PRInt32 aIndex) const {
|
|
return &mTrapezoids[aIndex];
|
|
}
|
|
|
|
// Get the number of floats that are impacting the current
|
|
// band. Note that this value is relative to the current translation
|
|
// in the space manager which means that some floats may be hidden
|
|
// by the translation and therefore won't be in the count.
|
|
PRInt32 GetFloatCount() const {
|
|
return mLeftFloats + mRightFloats;
|
|
}
|
|
PRInt32 GetLeftFloatCount() const {
|
|
return mLeftFloats;
|
|
}
|
|
PRInt32 GetRightFloatCount() const {
|
|
return mRightFloats;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void List();
|
|
#endif
|
|
|
|
protected:
|
|
|
|
/** utility method to calculate the band data at aY.
|
|
* nsBlockBandData methods should never call
|
|
* mSpaceManager->GetBandData directly.
|
|
* They should always call this method instead so data members
|
|
* mTrapezoid, mCount, and mSize all get managed properly.
|
|
*/
|
|
nsresult GetBandData(nscoord aY, PRBool aRelaxHeightConstraint);
|
|
|
|
// The spacemanager we are getting space from
|
|
nsSpaceManager* mSpaceManager;
|
|
nscoord mSpaceManagerX, mSpaceManagerY;
|
|
|
|
// Limit to the available space (set by Init)
|
|
nsSize mSpace;
|
|
|
|
// Trapezoids used during band processing
|
|
nsBandTrapezoid mData[NS_BLOCK_BAND_DATA_TRAPS];
|
|
|
|
// Bounding rect of available space between any left and right floats
|
|
nsRect mAvailSpace;
|
|
|
|
// Number of left/right floats in the current band. Note that this
|
|
// number may be less than the total number of floats present in
|
|
// the band, if our translation in the space manager "hides" some
|
|
// floats.
|
|
PRInt32 mLeftFloats, mRightFloats;
|
|
|
|
void ComputeAvailSpaceRect();
|
|
};
|
|
|
|
#endif /* nsBlockBandData_h___ */
|