зеркало из https://github.com/mozilla/gecko-dev.git
278 строки
10 KiB
C++
278 строки
10 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: MPL 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 Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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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 of the GNU General Public License Version 2 or later (the "GPL"),
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* or 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 MPL, 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 MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsGfxRadioControlFrame.h"
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#include "nsHTMLAtoms.h"
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#include "nsHTMLParts.h"
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#include "nsIFormControl.h"
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#include "nsIContent.h"
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#include "nsWidgetsCID.h"
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#include "nsIComponentManager.h"
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#include "nsCOMPtr.h"
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#include "nsCSSRendering.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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#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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#include "nsITheme.h"
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nsresult
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NS_NewGfxRadioControlFrame(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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nsGfxRadioControlFrame* it = new (aPresShell) nsGfxRadioControlFrame;
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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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nsGfxRadioControlFrame::nsGfxRadioControlFrame()
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{
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// Initialize GFX-rendered state
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mRadioButtonFaceStyle = nsnull;
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}
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nsGfxRadioControlFrame::~nsGfxRadioControlFrame()
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{
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if (mRadioButtonFaceStyle)
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mRadioButtonFaceStyle->Release();
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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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nsGfxRadioControlFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
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{
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NS_PRECONDITION(0 != aInstancePtr, "null ptr");
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if (NULL == aInstancePtr) {
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return NS_ERROR_NULL_POINTER;
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}
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if (aIID.Equals(NS_GET_IID(nsIRadioControlFrame))) {
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*aInstancePtr = (void*) ((nsIRadioControlFrame*) 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 nsGfxRadioControlFrame::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->CreateHTMLRadioButtonAccessible(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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nsStyleContext*
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nsGfxRadioControlFrame::GetAdditionalStyleContext(PRInt32 aIndex) const
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{
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switch (aIndex) {
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case NS_GFX_RADIO_CONTROL_FRAME_FACE_CONTEXT_INDEX:
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return mRadioButtonFaceStyle;
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break;
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default:
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return nsnull;
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}
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}
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//--------------------------------------------------------------
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void
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nsGfxRadioControlFrame::SetAdditionalStyleContext(PRInt32 aIndex,
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nsStyleContext* aStyleContext)
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{
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switch (aIndex) {
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case NS_GFX_RADIO_CONTROL_FRAME_FACE_CONTEXT_INDEX:
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if (mRadioButtonFaceStyle)
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mRadioButtonFaceStyle->Release();
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mRadioButtonFaceStyle = aStyleContext;
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if (aStyleContext)
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aStyleContext->AddRef();
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break;
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}
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}
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//--------------------------------------------------------------
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NS_IMETHODIMP
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nsGfxRadioControlFrame::SetRadioButtonFaceStyleContext(nsStyleContext *aRadioButtonFaceStyleContext)
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{
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mRadioButtonFaceStyle = aRadioButtonFaceStyleContext;
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mRadioButtonFaceStyle->AddRef();
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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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nsGfxRadioControlFrame::HandleEvent(nsPresContext* aPresContext,
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nsGUIEvent* aEvent,
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nsEventStatus* aEventStatus)
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{
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// Check for user-input:none style
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const nsStyleUserInterface* uiStyle = GetStyleUserInterface();
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if (uiStyle->mUserInput == NS_STYLE_USER_INPUT_NONE || uiStyle->mUserInput == NS_STYLE_USER_INPUT_DISABLED)
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return nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
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// otherwise, do nothing. Events are handled by the DOM.
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return NS_OK;
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}
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//--------------------------------------------------------------
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void
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nsGfxRadioControlFrame::PaintRadioButton(nsPresContext* aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect)
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{
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const nsStyleDisplay* disp = GetStyleDisplay();
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if (disp->mAppearance) {
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nsITheme *theme = aPresContext->GetTheme();
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if (theme && theme->ThemeSupportsWidget(aPresContext, this, disp->mAppearance))
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return; // No need to paint the radio button. The theme will do it.
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}
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PRBool checked = PR_TRUE;
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GetCurrentCheckState(&checked); // Get check state from the content model
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const nsStyleBorder* myBorder = mRadioButtonFaceStyle->GetStyleBorder();
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if (checked) {
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// Paint the button for the radio button using CSS background rendering code
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if (nsnull != mRadioButtonFaceStyle) {
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const nsStyleBackground* myColor = mRadioButtonFaceStyle->GetStyleBackground();
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const nsStyleColor* color = mRadioButtonFaceStyle->GetStyleColor();
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const nsStylePadding* myPadding = mRadioButtonFaceStyle->GetStylePadding();
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const nsStylePosition* myPosition = mRadioButtonFaceStyle->GetStylePosition();
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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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// So we will use PaintBackgroundWithSC to paint the dot,
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// but it uses the mBackgroundColor for painting and we need to use the mColor
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// so create a temporary style color struct and set it up appropriately
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// XXXldb It would make more sense to use
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// |aRenderingContext.FillEllipse| here, but on at least GTK that
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// doesn't draw a round enough circle.
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nsStyleBackground tmpColor = *myColor;
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tmpColor.mBackgroundColor = color->mColor;
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nsCSSRendering::PaintBackgroundWithSC(aPresContext, aRenderingContext,
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this, aDirtyRect, rect,
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tmpColor, *myBorder, *myPadding, PR_FALSE);
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nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
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aDirtyRect, rect, *myBorder, mRadioButtonFaceStyle, 0);
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}
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}
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}
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//--------------------------------------------------------------
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NS_METHOD
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nsGfxRadioControlFrame::Paint(nsPresContext* 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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PaintRadioButton(aPresContext, aRenderingContext, aDirtyRect);
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}
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nsRect rect(0, 0, mRect.width, mRect.height);
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const nsStyleOutline* myOutline = GetStyleOutline();
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const nsStyleBorder* myBorder = GetStyleBorder();
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nsCSSRendering::PaintOutline(aPresContext, aRenderingContext, this,
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aDirtyRect, rect, *myBorder, *myOutline,
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mStyleContext, 0);
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return rv;
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}
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//--------------------------------------------------------------
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NS_IMETHODIMP
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nsGfxRadioControlFrame::OnChecked(nsPresContext* aPresContext,
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PRBool aChecked)
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{
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Invalidate(GetOverflowRect(), PR_FALSE);
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return NS_OK;
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}
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//----------------------------------------------------------------------
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// Extra Debug Helper Methods
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//----------------------------------------------------------------------
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#ifdef DEBUG_rodsXXX
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NS_IMETHODIMP
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nsGfxRadioControlFrame::Reflow(nsPresContext* 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("nsGfxRadioControlFrame", aReflowState.reason);
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DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
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nsresult rv = nsNativeFormControlFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
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COMPARE_QUIRK_SIZE("nsGfxRadioControlFrame", 12, 11)
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NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
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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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nsGfxRadioControlFrame::OnContentReset()
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{
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return NS_OK;
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}
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