gecko-dev/layout/forms/nsGfxCheckboxControlFrame.cpp
2005-01-27 22:52:53 +00:00

301 lines
10 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 ***** */
#include "nsGfxCheckboxControlFrame.h"
#include "nsICheckButton.h"
#include "nsHTMLAtoms.h"
#include "nsHTMLParts.h"
#include "nsIFormControl.h"
#include "nsIContent.h"
#include "nsIComponentManager.h"
#include "nsHTMLAtoms.h"
#include "nsIPresShell.h"
#include "nsIDocument.h"
#include "nsCSSRendering.h"
#ifdef ACCESSIBILITY
#include "nsIAccessibilityService.h"
#endif
#include "nsIServiceManager.h"
#include "nsIDOMNode.h"
#include "nsIDOMHTMLInputElement.h"
#include "nsITheme.h"
#include "imgIRequest.h"
//------------------------------------------------------------
nsresult
NS_NewGfxCheckboxControlFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame)
{
NS_PRECONDITION(aNewFrame, "null OUT ptr");
if (nsnull == aNewFrame) {
return NS_ERROR_NULL_POINTER;
}
nsGfxCheckboxControlFrame* it = new (aPresShell) nsGfxCheckboxControlFrame;
if (!it) {
return NS_ERROR_OUT_OF_MEMORY;
}
*aNewFrame = it;
return NS_OK;
}
//------------------------------------------------------------
// Initialize GFX-rendered state
nsGfxCheckboxControlFrame::nsGfxCheckboxControlFrame()
: mCheckButtonFaceStyle(nsnull)
{
}
nsGfxCheckboxControlFrame::~nsGfxCheckboxControlFrame()
{
if (mCheckButtonFaceStyle)
mCheckButtonFaceStyle->Release();
}
//----------------------------------------------------------------------
// nsISupports
//----------------------------------------------------------------------
// Frames are not refcounted, no need to AddRef
NS_IMETHODIMP
nsGfxCheckboxControlFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
NS_ASSERTION(aInstancePtr, "QueryInterface requires a non-NULL destination!");
if ( !aInstancePtr )
return NS_ERROR_NULL_POINTER;
if (aIID.Equals(NS_GET_IID(nsICheckboxControlFrame))) {
*aInstancePtr = (void*) ((nsICheckboxControlFrame*) this);
return NS_OK;
}
return nsFormControlFrame::QueryInterface(aIID, aInstancePtr);
}
#ifdef ACCESSIBILITY
NS_IMETHODIMP nsGfxCheckboxControlFrame::GetAccessible(nsIAccessible** aAccessible)
{
nsCOMPtr<nsIAccessibilityService> accService = do_GetService("@mozilla.org/accessibilityService;1");
if (accService) {
return accService->CreateHTMLCheckboxAccessible(NS_STATIC_CAST(nsIFrame*, this), aAccessible);
}
return NS_ERROR_FAILURE;
}
#endif
//--------------------------------------------------------------
NS_IMETHODIMP
nsGfxCheckboxControlFrame::SetCheckboxFaceStyleContext(nsStyleContext *aCheckboxFaceStyleContext)
{
mCheckButtonFaceStyle = aCheckboxFaceStyleContext;
mCheckButtonFaceStyle->AddRef();
return NS_OK;
}
//--------------------------------------------------------------
nsStyleContext*
nsGfxCheckboxControlFrame::GetAdditionalStyleContext(PRInt32 aIndex) const
{
switch (aIndex) {
case NS_GFX_CHECKBOX_CONTROL_FRAME_FACE_CONTEXT_INDEX:
return mCheckButtonFaceStyle;
break;
default:
return nsnull;
}
}
//--------------------------------------------------------------
void
nsGfxCheckboxControlFrame::SetAdditionalStyleContext(PRInt32 aIndex,
nsStyleContext* aStyleContext)
{
switch (aIndex) {
case NS_GFX_CHECKBOX_CONTROL_FRAME_FACE_CONTEXT_INDEX:
if (mCheckButtonFaceStyle)
mCheckButtonFaceStyle->Release();
mCheckButtonFaceStyle = aStyleContext;
if (aStyleContext)
aStyleContext->AddRef();
break;
}
}
//------------------------------------------------------------
NS_IMETHODIMP
nsGfxCheckboxControlFrame::OnChecked(nsPresContext* aPresContext,
PRBool aChecked)
{
Invalidate(GetOverflowRect(), PR_FALSE);
return aChecked;
}
//------------------------------------------------------------
void
nsGfxCheckboxControlFrame::PaintCheckBox(nsPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer)
{
const nsStyleDisplay* disp = GetStyleDisplay();
if (disp->mAppearance) {
nsITheme *theme = aPresContext->GetTheme();
if (theme && theme->ThemeSupportsWidget(aPresContext, this, disp->mAppearance))
return; // No need to paint the checkbox. The theme will do it.
}
// Get current checked state through content model.
if (!GetCheckboxState())
return; // we're not checked, nothing to paint.
aRenderingContext.PushState();
nsMargin borderPadding(0,0,0,0);
CalcBorderPadding(borderPadding);
nsRect checkRect(0,0, mRect.width, mRect.height);
checkRect.Deflate(borderPadding);
const nsStyleColor* color = GetStyleColor();
aRenderingContext.SetColor(color->mColor);
nsFormControlHelper::PaintCheckMark(aRenderingContext,
aPresContext->ScaledPixelsToTwips(),
checkRect);
aRenderingContext.PopState();
}
//------------------------------------------------------------
NS_METHOD
nsGfxCheckboxControlFrame::Paint(nsPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer,
PRUint32 aFlags)
{
PRBool isVisible;
if (NS_SUCCEEDED(IsVisibleForPainting(aPresContext, aRenderingContext, PR_TRUE, &isVisible)) && !isVisible) {
return NS_OK;
}
// Paint the background
nsresult rv = nsFormControlFrame::Paint(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
if (NS_FRAME_PAINT_LAYER_FOREGROUND == aWhichLayer) {
PRBool doDefaultPainting = PR_TRUE;
// Paint the checkmark
const nsStyleBorder* myBorder = mCheckButtonFaceStyle->GetStyleBorder();
if (!mCheckButtonFaceStyle && GetCheckboxState()) {
const nsStyleBackground* myColor = mCheckButtonFaceStyle->GetStyleBackground();
if (myColor->mBackgroundImage) {
const nsStylePadding* myPadding = mCheckButtonFaceStyle->GetStylePadding();
const nsStylePosition* myPosition = mCheckButtonFaceStyle->GetStylePosition();
nscoord width = myPosition->mWidth.GetCoordValue();
nscoord height = myPosition->mHeight.GetCoordValue();
// Position the button centered within the radio control's rectangle.
nscoord x = (mRect.width - width) / 2;
nscoord y = (mRect.height - height) / 2;
nsRect rect(x, y, width, height);
nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, this,
aDirtyRect, rect, *myBorder, *myPadding,
PR_FALSE);
nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
aDirtyRect, rect, *myBorder, mCheckButtonFaceStyle, 0);
doDefaultPainting = PR_FALSE;
}
}
nsRect rect(0, 0, mRect.width, mRect.height);
const nsStyleOutline* myOutline = GetStyleOutline();
nsCSSRendering::PaintOutline(aPresContext, aRenderingContext, this,
aDirtyRect, rect, *myBorder, *myOutline,
mStyleContext, 0);
if (doDefaultPainting) {
PaintCheckBox(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
}
}
return rv;
}
//------------------------------------------------------------
PRBool
nsGfxCheckboxControlFrame::GetCheckboxState ( )
{
nsCOMPtr<nsIDOMHTMLInputElement> elem(do_QueryInterface(mContent));
PRBool retval = PR_FALSE;
elem->GetChecked(&retval);
return retval;
}
//------------------------------------------------------------
// Extra Debug Methods
//------------------------------------------------------------
#ifdef DEBUG_rodsXXX
NS_IMETHODIMP
nsGfxCheckboxControlFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsGfxCheckboxControlFrame", aReflowState.reason);
DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
nsresult rv = nsFormControlFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
COMPARE_QUIRK_SIZE("nsGfxCheckboxControlFrame", 13, 13)
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
return rv;
}
#endif
NS_IMETHODIMP
nsGfxCheckboxControlFrame::OnContentReset()
{
return NS_OK;
}