зеркало из https://github.com/mozilla/gecko-dev.git
418 строки
13 KiB
C++
418 строки
13 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsGfxCheckboxControlFrame.h"
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#include "nsICheckButton.h"
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#include "nsHTMLAtoms.h"
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#include "nsHTMLParts.h"
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#include "nsFormFrame.h"
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#include "nsIFormControl.h"
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#include "nsIContent.h"
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#include "nsIComponentManager.h"
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#include "nsHTMLAtoms.h"
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#include "nsINameSpaceManager.h"
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#include "nsIPresState.h"
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#include "nsIPresShell.h"
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#include "nsIDocument.h"
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#include "nsCSSRendering.h"
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#ifdef ACCESSIBILITY
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#include "nsIAccessibilityService.h"
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#endif
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#include "nsIServiceManager.h"
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#include "nsIDOMNode.h"
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//------------------------------------------------------------
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nsresult
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NS_NewGfxCheckboxControlFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame)
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{
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NS_PRECONDITION(aNewFrame, "null OUT ptr");
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if (nsnull == aNewFrame) {
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return NS_ERROR_NULL_POINTER;
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}
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nsGfxCheckboxControlFrame* it = new (aPresShell) nsGfxCheckboxControlFrame;
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if (!it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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*aNewFrame = it;
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return NS_OK;
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}
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//------------------------------------------------------------
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// Initialize GFX-rendered state
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nsGfxCheckboxControlFrame::nsGfxCheckboxControlFrame()
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: mCheckButtonFaceStyle(nsnull)
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{
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}
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nsGfxCheckboxControlFrame::~nsGfxCheckboxControlFrame()
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{
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NS_IF_RELEASE(mCheckButtonFaceStyle);
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}
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//----------------------------------------------------------------------
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// nsISupports
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//----------------------------------------------------------------------
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// Frames are not refcounted, no need to AddRef
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NS_IMETHODIMP
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nsGfxCheckboxControlFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
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{
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NS_ASSERTION(aInstancePtr, "QueryInterface requires a non-NULL destination!");
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if ( !aInstancePtr )
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return NS_ERROR_NULL_POINTER;
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if (aIID.Equals(NS_GET_IID(nsIStatefulFrame))) {
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*aInstancePtr = (void*)(nsIStatefulFrame*) this;
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return NS_OK;
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}
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if (aIID.Equals(NS_GET_IID(nsICheckboxControlFrame))) {
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*aInstancePtr = (void*) ((nsICheckboxControlFrame*) this);
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return NS_OK;
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}
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return nsFormControlFrame::QueryInterface(aIID, aInstancePtr);
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}
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#ifdef ACCESSIBILITY
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NS_IMETHODIMP nsGfxCheckboxControlFrame::GetAccessible(nsIAccessible** aAccessible)
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{
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nsCOMPtr<nsIAccessibilityService> accService = do_GetService("@mozilla.org/accessibilityService;1");
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if (accService) {
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return accService->CreateHTMLCheckboxAccessible(NS_STATIC_CAST(nsIFrame*, this), aAccessible);
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}
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return NS_ERROR_FAILURE;
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}
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#endif
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//--------------------------------------------------------------
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NS_IMETHODIMP
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nsGfxCheckboxControlFrame::SetCheckboxFaceStyleContext(nsIStyleContext *aCheckboxFaceStyleContext)
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{
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mCheckButtonFaceStyle = aCheckboxFaceStyleContext;
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NS_ADDREF(mCheckButtonFaceStyle);
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return NS_OK;
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}
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//--------------------------------------------------------------
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NS_IMETHODIMP
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nsGfxCheckboxControlFrame::GetAdditionalStyleContext(PRInt32 aIndex,
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nsIStyleContext** aStyleContext) const
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{
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NS_PRECONDITION(nsnull != aStyleContext, "null OUT parameter pointer");
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if (aIndex < 0) {
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return NS_ERROR_INVALID_ARG;
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}
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*aStyleContext = nsnull;
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switch (aIndex) {
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case NS_GFX_CHECKBOX_CONTROL_FRAME_FACE_CONTEXT_INDEX:
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*aStyleContext = mCheckButtonFaceStyle;
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NS_IF_ADDREF(*aStyleContext);
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break;
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default:
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return NS_ERROR_INVALID_ARG;
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}
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return NS_OK;
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}
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//--------------------------------------------------------------
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NS_IMETHODIMP
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nsGfxCheckboxControlFrame::SetAdditionalStyleContext(PRInt32 aIndex,
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nsIStyleContext* aStyleContext)
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{
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if (aIndex < 0) {
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return NS_ERROR_INVALID_ARG;
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}
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switch (aIndex) {
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case NS_GFX_CHECKBOX_CONTROL_FRAME_FACE_CONTEXT_INDEX:
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NS_IF_RELEASE(mCheckButtonFaceStyle);
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mCheckButtonFaceStyle = aStyleContext;
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NS_IF_ADDREF(aStyleContext);
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break;
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}
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return NS_OK;
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}
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//------------------------------------------------------------
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NS_IMETHODIMP
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nsGfxCheckboxControlFrame::OnChecked(nsIPresContext* aPresContext,
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PRBool aChecked)
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{
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nsFormControlHelper::ForceDrawFrame(aPresContext, this);
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return aChecked;
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}
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//------------------------------------------------------------
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void
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nsGfxCheckboxControlFrame::PaintCheckBox(nsIPresContext* aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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nsFramePaintLayer aWhichLayer)
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{
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aRenderingContext.PushState();
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float p2t;
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aPresContext->GetScaledPixelsToTwips(&p2t);
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nsMargin borderPadding(0,0,0,0);
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CalcBorderPadding(borderPadding);
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nsRect checkRect(0,0, mRect.width, mRect.height);
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checkRect.Deflate(borderPadding);
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const nsStyleColor* color = (const nsStyleColor*)
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mStyleContext->GetStyleData(eStyleStruct_Color);
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aRenderingContext.SetColor(color->mColor);
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// Get current checked state through content model.
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if ( GetCheckboxState() ) {
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nsFormControlHelper::PaintCheckMark(aRenderingContext, p2t, checkRect);
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}
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PRBool clip;
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aRenderingContext.PopState(clip);
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}
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//------------------------------------------------------------
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NS_METHOD
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nsGfxCheckboxControlFrame::Paint(nsIPresContext* aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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nsFramePaintLayer aWhichLayer,
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PRUint32 aFlags)
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{
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PRBool isVisible;
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if (NS_SUCCEEDED(IsVisibleForPainting(aPresContext, aRenderingContext, PR_TRUE, &isVisible)) && !isVisible) {
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return NS_OK;
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}
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// Paint the background
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nsresult rv = nsFormControlFrame::Paint(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
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if (NS_FRAME_PAINT_LAYER_FOREGROUND == aWhichLayer) {
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PRBool doDefaultPainting = PR_TRUE;
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// Paint the checkmark
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if (!mCheckButtonFaceStyle && GetCheckboxState()) {
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const nsStyleBackground* myColor = (const nsStyleBackground*)
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mCheckButtonFaceStyle->GetStyleData(eStyleStruct_Background);
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if (myColor->mBackgroundImage.Length() > 0) {
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const nsStyleBorder* myBorder = (const nsStyleBorder*)
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mCheckButtonFaceStyle->GetStyleData(eStyleStruct_Border);
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const nsStylePosition* myPosition = (const nsStylePosition*)
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mCheckButtonFaceStyle->GetStyleData(eStyleStruct_Position);
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nscoord width = myPosition->mWidth.GetCoordValue();
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nscoord height = myPosition->mHeight.GetCoordValue();
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// Position the button centered within the radio control's rectangle.
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nscoord x = (mRect.width - width) / 2;
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nscoord y = (mRect.height - height) / 2;
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nsRect rect(x, y, width, height);
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nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, this,
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aDirtyRect, rect, *myBorder, 0, 0);
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
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aDirtyRect, rect, *myBorder, mCheckButtonFaceStyle, 0);
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doDefaultPainting = PR_FALSE;
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}
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}
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if (doDefaultPainting) {
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PaintCheckBox(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
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}
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}
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return rv;
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}
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//------------------------------------------------------------
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PRBool
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nsGfxCheckboxControlFrame::GetCheckboxState ( )
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{
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nsCOMPtr<nsIDOMHTMLInputElement> elem(do_QueryInterface(mContent));
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PRBool retval = PR_FALSE;
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elem->GetChecked(&retval);
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return retval;
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}
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//------------------------------------------------------------
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void
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nsGfxCheckboxControlFrame::SetCheckboxState (nsIPresContext* aPresContext,
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PRBool aValue )
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{
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nsCOMPtr<nsIDOMHTMLInputElement> elem(do_QueryInterface(mContent));
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elem->SetChecked(aValue);
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}
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//------------------------------------------------------------
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void
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nsGfxCheckboxControlFrame::GetCheckboxControlFrameState (
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nsAWritableString& aValue )
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{
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CheckStateToString(GetCheckboxState(), aValue);
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}
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//------------------------------------------------------------
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void
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nsGfxCheckboxControlFrame::SetCheckboxControlFrameState (
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nsIPresContext* aPresContext,
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const nsAReadableString& aValue )
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{
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PRBool state = StringToCheckState(aValue);
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SetCheckboxState(aPresContext, state);
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}
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//------------------------------------------------------------
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//
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// CheckStateToString
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//
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// Converts from a CheckState to a string
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//
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void
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nsGfxCheckboxControlFrame::CheckStateToString (
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PRBool inState,
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nsAWritableString& outStateAsString )
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{
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if (inState) {
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outStateAsString.Assign(NS_STRING_TRUE);
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} else {
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outStateAsString.Assign(NS_STRING_FALSE);
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}
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} // CheckStateToString
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//------------------------------------------------------------
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//
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// StringToCheckState
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//
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// Converts from a string to a CheckState enum
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//
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PRBool
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nsGfxCheckboxControlFrame::StringToCheckState ( const nsAReadableString & aStateAsString )
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{
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return aStateAsString.Equals(NS_STRING_TRUE);
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} // StringToCheckState
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//----------------------------------------------------------------------
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// nsIStatefulFrame
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//----------------------------------------------------------------------
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NS_IMETHODIMP nsGfxCheckboxControlFrame::SaveState(nsIPresContext* aPresContext,
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nsIPresState** aState)
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{
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NS_ENSURE_ARG_POINTER(aState);
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// Don't save state before we are initialized
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if (!mDidInit) {
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return NS_OK;
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}
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PRBool stateCheck = GetCheckboxState();
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PRBool defaultStateBool = PR_FALSE;
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nsresult res = GetDefaultCheckState(&defaultStateBool);
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// Compare to default value, and only save if needed (Bug 62713)
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if (!(NS_CONTENT_ATTR_HAS_VALUE == res &&
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((stateCheck && defaultStateBool) ||
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(!stateCheck && !defaultStateBool)))) {
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// Get the value string
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nsAutoString stateString;
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CheckStateToString(stateCheck, stateString);
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// Construct a pres state and store value in it.
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res = NS_NewPresState(aState);
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NS_ENSURE_SUCCESS(res, res);
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res = (*aState)->SetStateProperty(NS_LITERAL_STRING("checked"), stateString);
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}
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return res;
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}
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NS_IMETHODIMP nsGfxCheckboxControlFrame::RestoreState(nsIPresContext* aPresContext,
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nsIPresState* aState)
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{
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NS_ENSURE_ARG_POINTER(aState);
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if (!mDidInit) {
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mPresContext = aPresContext;
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InitializeControl(aPresContext);
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mDidInit = PR_TRUE;
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}
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// Set the value to the stored state.
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nsAutoString stateString;
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nsresult res = aState->GetStateProperty(NS_LITERAL_STRING("checked"), stateString);
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NS_ENSURE_SUCCESS(res, res);
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SetCheckboxControlFrameState(aPresContext, stateString);
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return NS_OK;
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}
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//------------------------------------------------------------
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// Extra Debug Methods
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//------------------------------------------------------------
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#ifdef DEBUG_rodsXXX
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NS_IMETHODIMP
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nsGfxCheckboxControlFrame::Reflow(nsIPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus)
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{
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DO_GLOBAL_REFLOW_COUNT("nsGfxCheckboxControlFrame", aReflowState.reason);
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DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
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nsresult rv = nsFormControlFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
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COMPARE_QUIRK_SIZE("nsGfxCheckboxControlFrame", 13, 13)
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return rv;
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}
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#endif
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NS_IMETHODIMP
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nsGfxCheckboxControlFrame::OnContentReset()
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{
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return NS_OK;
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}
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