pjs/layout/forms/nsGfxRadioControlFrame.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape 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/NPL/
*
* 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 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
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* decision by deleting the provisions above and replace them with the notice
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* the provisions above, a recipient may use your version of this file under
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*
* ***** END LICENSE BLOCK ***** */
#include "nsGfxRadioControlFrame.h"
#include "nsHTMLAtoms.h"
#include "nsHTMLParts.h"
#include "nsIFormControl.h"
#include "nsIContent.h"
#include "nsWidgetsCID.h"
#include "nsIComponentManager.h"
#include "nsCOMPtr.h"
#include "nsCSSRendering.h"
#include "nsIPresState.h"
#include "nsIPresShell.h"
#include "nsIDocument.h"
#include "nsINameSpaceManager.h"
#ifdef ACCESSIBILITY
#include "nsIAccessibilityService.h"
#endif
#include "nsIServiceManager.h"
#include "nsIDOMNode.h"
#include "nsITheme.h"
nsresult
NS_NewGfxRadioControlFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame)
{
NS_PRECONDITION(aNewFrame, "null OUT ptr");
if (nsnull == aNewFrame) {
return NS_ERROR_NULL_POINTER;
}
nsGfxRadioControlFrame* it = new (aPresShell) nsGfxRadioControlFrame;
if (!it) {
return NS_ERROR_OUT_OF_MEMORY;
}
*aNewFrame = it;
return NS_OK;
}
nsGfxRadioControlFrame::nsGfxRadioControlFrame()
{
// Initialize GFX-rendered state
mRadioButtonFaceStyle = nsnull;
}
nsGfxRadioControlFrame::~nsGfxRadioControlFrame()
{
NS_IF_RELEASE(mRadioButtonFaceStyle);
}
// Frames are not refcounted, no need to AddRef
NS_IMETHODIMP
nsGfxRadioControlFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
NS_PRECONDITION(0 != aInstancePtr, "null ptr");
if (NULL == aInstancePtr) {
return NS_ERROR_NULL_POINTER;
}
if (aIID.Equals(NS_GET_IID(nsIRadioControlFrame))) {
*aInstancePtr = (void*) ((nsIRadioControlFrame*) this);
return NS_OK;
}
return nsFormControlFrame::QueryInterface(aIID, aInstancePtr);
}
#ifdef ACCESSIBILITY
NS_IMETHODIMP nsGfxRadioControlFrame::GetAccessible(nsIAccessible** aAccessible)
{
nsCOMPtr<nsIAccessibilityService> accService = do_GetService("@mozilla.org/accessibilityService;1");
if (accService) {
return accService->CreateHTMLRadioButtonAccessible(NS_STATIC_CAST(nsIFrame*, this), aAccessible);
}
return NS_ERROR_FAILURE;
}
#endif
//--------------------------------------------------------------
NS_IMETHODIMP
nsGfxRadioControlFrame::GetAdditionalStyleContext(PRInt32 aIndex,
nsIStyleContext** aStyleContext) const
{
NS_PRECONDITION(nsnull != aStyleContext, "null OUT parameter pointer");
if (aIndex < 0) {
return NS_ERROR_INVALID_ARG;
}
*aStyleContext = nsnull;
switch (aIndex) {
case NS_GFX_RADIO_CONTROL_FRAME_FACE_CONTEXT_INDEX:
*aStyleContext = mRadioButtonFaceStyle;
NS_IF_ADDREF(*aStyleContext);
break;
default:
return NS_ERROR_INVALID_ARG;
}
return NS_OK;
}
//--------------------------------------------------------------
NS_IMETHODIMP
nsGfxRadioControlFrame::SetAdditionalStyleContext(PRInt32 aIndex,
nsIStyleContext* aStyleContext)
{
if (aIndex < 0) {
return NS_ERROR_INVALID_ARG;
}
switch (aIndex) {
case NS_GFX_RADIO_CONTROL_FRAME_FACE_CONTEXT_INDEX:
NS_IF_RELEASE(mRadioButtonFaceStyle);
mRadioButtonFaceStyle = aStyleContext;
NS_IF_ADDREF(aStyleContext);
break;
}
return NS_OK;
}
//--------------------------------------------------------------
NS_IMETHODIMP
nsGfxRadioControlFrame::SetRadioButtonFaceStyleContext(nsIStyleContext *aRadioButtonFaceStyleContext)
{
mRadioButtonFaceStyle = aRadioButtonFaceStyleContext;
NS_ADDREF(mRadioButtonFaceStyle);
return NS_OK;
}
//--------------------------------------------------------------
NS_IMETHODIMP
nsGfxRadioControlFrame::HandleEvent(nsIPresContext* aPresContext,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus)
{
// Check for user-input:none style
const nsStyleUserInterface* uiStyle;
GetStyleData(eStyleStruct_UserInterface, (const nsStyleStruct *&)uiStyle);
if (uiStyle->mUserInput == NS_STYLE_USER_INPUT_NONE || uiStyle->mUserInput == NS_STYLE_USER_INPUT_DISABLED)
return nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
// otherwise, do nothing. Events are handled by the DOM.
return NS_OK;
}
//--------------------------------------------------------------
void
nsGfxRadioControlFrame::PaintRadioButton(nsIPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect)
{
const nsStyleDisplay* disp = (const nsStyleDisplay*)mStyleContext->GetStyleData(eStyleStruct_Display);
if (disp->mAppearance) {
nsCOMPtr<nsITheme> theme;
aPresContext->GetTheme(getter_AddRefs(theme));
if (theme && theme->ThemeSupportsWidget(aPresContext, this, disp->mAppearance))
return; // No need to paint the radio button. The theme will do it.
}
PRBool checked = PR_TRUE;
GetCurrentCheckState(&checked); // Get check state from the content model
if (checked) {
// Paint the button for the radio button using CSS background rendering code
if (nsnull != mRadioButtonFaceStyle) {
const nsStyleBackground* myColor = (const nsStyleBackground*)
mRadioButtonFaceStyle->GetStyleData(eStyleStruct_Background);
const nsStyleColor* color = (const nsStyleColor*)
mRadioButtonFaceStyle->GetStyleData(eStyleStruct_Color);
const nsStyleBorder* myBorder = (const nsStyleBorder*)
mRadioButtonFaceStyle->GetStyleData(eStyleStruct_Border);
const nsStylePadding* myPadding = (const nsStylePadding*)
mRadioButtonFaceStyle->GetStyleData(eStyleStruct_Padding);
const nsStylePosition* myPosition = (const nsStylePosition*)
mRadioButtonFaceStyle->GetStyleData(eStyleStruct_Position);
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);
// So we will use PaintBackgroundWithSC to paint the dot,
// but it uses the mBackgroundColor for painting and we need to use the mColor
// so create a temporary style color struct and set it up appropriately
// XXXldb It would make more sense to use
// |aRenderingContext.FillEllipse| here, but on at least GTK that
// doesn't draw a round enough circle.
nsStyleBackground tmpColor = *myColor;
tmpColor.mBackgroundColor = color->mColor;
nsCSSRendering::PaintBackgroundWithSC(aPresContext, aRenderingContext,
this, aDirtyRect, rect,
tmpColor, *myBorder, *myPadding,
0, 0);
nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
aDirtyRect, rect, *myBorder, mRadioButtonFaceStyle, 0);
}
}
}
//--------------------------------------------------------------
NS_METHOD
nsGfxRadioControlFrame::Paint(nsIPresContext* 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) {
PaintRadioButton(aPresContext, aRenderingContext, aDirtyRect);
}
return rv;
}
//--------------------------------------------------------------
NS_IMETHODIMP
nsGfxRadioControlFrame::OnChecked(nsIPresContext* aPresContext,
PRBool aChecked)
{
nsFormControlHelper::ForceDrawFrame(aPresContext, this);
return NS_OK;
}
//----------------------------------------------------------------------
// Extra Debug Helper Methods
//----------------------------------------------------------------------
#ifdef DEBUG_rodsXXX
NS_IMETHODIMP
nsGfxRadioControlFrame::Reflow(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsGfxRadioControlFrame", aReflowState.reason);
DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
nsresult rv = nsNativeFormControlFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
COMPARE_QUIRK_SIZE("nsGfxRadioControlFrame", 12, 11)
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
return rv;
}
#endif
NS_IMETHODIMP
nsGfxRadioControlFrame::OnContentReset()
{
return NS_OK;
}