Mozilla/mozilla/layout/html/forms/src/nsFormElement.cpp
kipp 51777f1e3b Set ascent/descent information so that vertical alignment works better
git-svn-id: svn://10.0.0.236/trunk@1065 18797224-902f-48f8-a5cc-f745e15eee43
1998-05-02 02:04:00 +00:00

155 lines
4.8 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsHTMLParts.h"
#include "nsHTMLTagContent.h"
#include "nsIRenderingContext.h"
#include "nsIPresContext.h"
#include "nsIStyleContext.h"
#include "nsLeafFrame.h"
#include "nsCSSRendering.h"
#include "nsHTMLIIDs.h"
// this file is obsolete and will be removed
static NS_DEFINE_IID(kStyleBorderSID, NS_STYLEBORDER_SID);
enum FormElementType {
eFormElementType_Submit,
eFormElementType_Reset,
eFormElementType_Text,
eFormElementType_Password,
eFormElementType_TextArea,
};
class FormElementFrame : public nsLeafFrame {
public:
FormElementFrame(nsIContent* aContent,
PRInt32 aIndexInParent,
nsIFrame* aParentFrame);
virtual void Paint(nsIPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect);
protected:
virtual ~FormElementFrame();
virtual void GetDesiredSize(nsIPresContext* aPresContext,
nsReflowMetrics& aDesiredSize,
const nsSize& aMaxSize);
};
class FormElementContent : public nsHTMLTagContent {
public:
FormElementContent(nsIAtom* aTag, FormElementType aType);
virtual nsIFrame* CreateFrame(nsIPresContext* aPresContext,
PRInt32 aIndexInParent,
nsIFrame* aParentFrame);
protected:
virtual ~FormElementContent();
FormElementType mType;
};
//----------------------------------------------------------------------
FormElementFrame::FormElementFrame(nsIContent* aContent,
PRInt32 aIndexInParent,
nsIFrame* aParentFrame)
: nsLeafFrame(aContent, aIndexInParent, aParentFrame)
{
}
FormElementFrame::~FormElementFrame()
{
}
// XXX it would be cool if form element used our rendering sw, then
// they could be blended, and bordered, and so on...
void FormElementFrame::Paint(nsIPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect)
{
nsStyleBorder* myBorder =
(nsStyleBorder*)mStyleContext->GetData(kStyleBorderSID);
nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
aDirtyRect, mRect, *myBorder, 0);
}
void FormElementFrame::GetDesiredSize(nsIPresContext* aPresContext,
nsReflowMetrics& aDesiredSize,
const nsSize& aMaxSize)
{
float p2t = aPresContext->GetPixelsToTwips();
aDesiredSize.width = nscoord(75 * p2t);
aDesiredSize.height = nscoord(37 * p2t);
aDesiredSize.ascent = aDesiredSize.height;
aDesiredSize.descent = 0;
}
//----------------------------------------------------------------------
FormElementContent::FormElementContent(nsIAtom* aTag, FormElementType aType)
: nsHTMLTagContent(aTag),
mType(aType)
{
}
FormElementContent::~FormElementContent()
{
}
nsIFrame* FormElementContent::CreateFrame(nsIPresContext* aPresContext,
PRInt32 aIndexInParent,
nsIFrame* aParentFrame)
{
nsIFrame* rv = new FormElementFrame(this, aIndexInParent, aParentFrame);
return rv;
}
NS_HTML nsresult
NS_NewHTMLSubmitButton(nsIHTMLContent** aInstancePtrResult,
nsIAtom* aTag)
{
NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr");
if (nsnull == aInstancePtrResult) {
return NS_ERROR_NULL_POINTER;
}
nsIHTMLContent* it = new FormElementContent(aTag, eFormElementType_Submit);
if (nsnull == it) {
return NS_ERROR_OUT_OF_MEMORY;
}
return it->QueryInterface(kIHTMLContentIID, (void**) aInstancePtrResult);
}
NS_HTML nsresult
NS_NewHTMLResetButton(nsIHTMLContent** aInstancePtrResult,
nsIAtom* aTag)
{
NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr");
if (nsnull == aInstancePtrResult) {
return NS_ERROR_NULL_POINTER;
}
nsIHTMLContent* it = new FormElementContent(aTag, eFormElementType_Reset);
if (nsnull == it) {
return NS_ERROR_OUT_OF_MEMORY;
}
return it->QueryInterface(kIHTMLContentIID, (void**) aInstancePtrResult);
}