/* -*- 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 "nsIContent.h" #include "nsCOMPtr.h" #include "nsCSSRendering.h" #ifdef ACCESSIBILITY #include "nsIAccessibilityService.h" #endif #include "nsIServiceManager.h" #include "nsIDOMHTMLInputElement.h" #include "nsDisplayList.h" #include "nsCSSAnonBoxes.h" #include "nsIDOMNSHTMLInputElement.h" static void PaintCheckMark(nsIRenderingContext& aRenderingContext, const nsRect& aRect) { // Points come from the coordinates on a 7X7 unit box centered at 0,0 const PRInt32 checkPolygonX[] = { -3, -1, 3, 3, -1, -3 }; const PRInt32 checkPolygonY[] = { -1, 1, -3, -1, 3, 1 }; const PRInt32 checkNumPoints = sizeof(checkPolygonX) / sizeof(PRInt32); const PRInt32 checkSize = 9; // This is value is determined by adding 2 // units to pad the 7x7 unit checkmark // Scale the checkmark based on the smallest dimension nscoord paintScale = PR_MIN(aRect.width, aRect.height) / checkSize; nsPoint paintCenter(aRect.x + aRect.width / 2, aRect.y + aRect.height / 2); nsPoint paintPolygon[checkNumPoints]; // Convert checkmark for screen rendering for (PRInt32 polyIndex = 0; polyIndex < checkNumPoints; polyIndex++) { paintPolygon[polyIndex] = paintCenter + nsPoint(checkPolygonX[polyIndex] * paintScale, checkPolygonY[polyIndex] * paintScale); } aRenderingContext.FillPolygon(paintPolygon, checkNumPoints); } static void PaintIndeterminateMark(nsIRenderingContext& aRenderingContext, const nsRect& aRect) { // Drawing a thin horizontal line in the middle of the rect. nsRect fillRect = aRect; fillRect.height /= 4; fillRect.y += (aRect.height - fillRect.height) / 2; aRenderingContext.FillRect(fillRect); } //------------------------------------------------------------ nsIFrame* NS_NewGfxCheckboxControlFrame(nsIPresShell* aPresShell, nsStyleContext* aContext) { return new (aPresShell) nsGfxCheckboxControlFrame(aContext); } //------------------------------------------------------------ // Initialize GFX-rendered state nsGfxCheckboxControlFrame::nsGfxCheckboxControlFrame(nsStyleContext* aContext) : nsFormControlFrame(aContext) { } nsGfxCheckboxControlFrame::~nsGfxCheckboxControlFrame() { } NS_QUERYFRAME_HEAD(nsGfxCheckboxControlFrame) NS_QUERYFRAME_ENTRY(nsICheckboxControlFrame) NS_QUERYFRAME_TAIL_INHERITING(nsFormControlFrame) NS_IMETHODIMP nsGfxCheckboxControlFrame::Init(nsIContent* aContent, nsIFrame* aParent, nsIFrame* aPrevInFlow) { nsresult rv = nsFormControlFrame::Init(aContent, aParent, aPrevInFlow); if (NS_SUCCEEDED(rv)) { mCheckButtonFaceStyle = PresContext()->PresShell()->StyleSet()-> ResolvePseudoStyleFor(aContent, nsCSSAnonBoxes::check, GetStyleContext()); } return rv; } #ifdef ACCESSIBILITY NS_IMETHODIMP nsGfxCheckboxControlFrame::GetAccessible(nsIAccessible** aAccessible) { nsCOMPtr accService = do_GetService("@mozilla.org/accessibilityService;1"); if (accService) { return accService->CreateHTMLCheckboxAccessible(static_cast(this), aAccessible); } return NS_ERROR_FAILURE; } #endif //-------------------------------------------------------------- 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: mCheckButtonFaceStyle = aStyleContext; break; } } //------------------------------------------------------------ NS_IMETHODIMP nsGfxCheckboxControlFrame::OnChecked(nsPresContext* aPresContext, PRBool aChecked) { InvalidateOverflowRect(); return NS_OK; } static void PaintCheckMarkFromStyle(nsIFrame* aFrame, nsIRenderingContext* aCtx, const nsRect& aDirtyRect, nsPoint aPt) { static_cast(aFrame) ->PaintCheckBoxFromStyle(*aCtx, aPt, aDirtyRect); } class nsDisplayCheckMark : public nsDisplayItem { public: nsDisplayCheckMark(nsGfxCheckboxControlFrame* aFrame) : nsDisplayItem(aFrame) { MOZ_COUNT_CTOR(nsDisplayCheckMark); } #ifdef NS_BUILD_REFCNT_LOGGING virtual ~nsDisplayCheckMark() { MOZ_COUNT_DTOR(nsDisplayCheckMark); } #endif virtual void Paint(nsDisplayListBuilder* aBuilder, nsIRenderingContext* aCtx, const nsRect& aDirtyRect); NS_DISPLAY_DECL_NAME("CheckMark") }; void nsDisplayCheckMark::Paint(nsDisplayListBuilder* aBuilder, nsIRenderingContext* aCtx, const nsRect& aDirtyRect) { static_cast(mFrame)-> PaintCheckBox(*aCtx, aBuilder->ToReferenceFrame(mFrame), aDirtyRect); } //------------------------------------------------------------ void nsGfxCheckboxControlFrame::PaintCheckBox(nsIRenderingContext& aRenderingContext, nsPoint aPt, const nsRect& aDirtyRect) { // REVIEW: moved the mAppearance test out so we avoid constructing // a display item if it's not needed nsRect checkRect(aPt, mRect.Size()); checkRect.Deflate(GetUsedBorderAndPadding()); const nsStyleColor* color = GetStyleColor(); aRenderingContext.SetColor(color->mColor); if (IsIndeterminate()) PaintIndeterminateMark(aRenderingContext, checkRect); else PaintCheckMark(aRenderingContext, checkRect); } //------------------------------------------------------------ NS_IMETHODIMP nsGfxCheckboxControlFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder, const nsRect& aDirtyRect, const nsDisplayListSet& aLists) { nsresult rv = nsFormControlFrame::BuildDisplayList(aBuilder, aDirtyRect, aLists); NS_ENSURE_SUCCESS(rv, rv); // Get current checked state through content model. if ((!IsChecked() && !IsIndeterminate()) || !IsVisibleForPainting(aBuilder)) return NS_OK; // we're not checked or not visible, nothing to paint. if (IsThemed()) return NS_OK; // No need to paint the checkmark. The theme will do it. // Paint the checkmark if (mCheckButtonFaceStyle) { // This code actually works now; not sure how useful it'll be // (The purpose is to allow the UA stylesheet to substitute its own // checkmark for the default one) // XXXbz maybe we should just remove this, together with the // attendant complexity const nsStyleBackground* myBackground = mCheckButtonFaceStyle->GetStyleBackground(); if (!myBackground->IsTransparent()) return aLists.Content()->AppendNewToTop(new (aBuilder) nsDisplayGeneric(this, PaintCheckMarkFromStyle, "CheckMarkFromStyle")); } return aLists.Content()->AppendNewToTop(new (aBuilder) nsDisplayCheckMark(this)); } void nsGfxCheckboxControlFrame::PaintCheckBoxFromStyle( nsIRenderingContext& aRenderingContext, nsPoint aPt, const nsRect& aDirtyRect) { const nsStylePosition* myPosition = mCheckButtonFaceStyle->GetStylePosition(); const nsStyleBorder* myBorder = mCheckButtonFaceStyle->GetStyleBorder(); const nsStyleBackground* myBackground = mCheckButtonFaceStyle->GetStyleBackground(); NS_ASSERTION(myPosition->mWidth.GetUnit() == eStyleUnit_Coord && myPosition->mHeight.GetUnit() == eStyleUnit_Coord, "styles for :-moz-checkbox are incorrect or author-accessible"); nscoord width = myPosition->mWidth.GetCoordValue(); nscoord height = myPosition->mHeight.GetCoordValue(); // Position the button centered within the control's rectangle. nscoord x = (mRect.width - width) / 2; nscoord y = (mRect.height - height) / 2; nsRect rect(aPt.x + x, aPt.y + y, width, height); nsCSSRendering::PaintBackgroundWithSC(PresContext(), aRenderingContext, this, aDirtyRect, rect, *myBackground, *myBorder, PR_FALSE); nsCSSRendering::PaintBorder(PresContext(), aRenderingContext, this, aDirtyRect, rect, *myBorder, mCheckButtonFaceStyle); } //------------------------------------------------------------ PRBool nsGfxCheckboxControlFrame::IsChecked() { nsCOMPtr elem(do_QueryInterface(mContent)); PRBool retval = PR_FALSE; elem->GetChecked(&retval); return retval; } PRBool nsGfxCheckboxControlFrame::IsIndeterminate() { nsCOMPtr elem(do_QueryInterface(mContent)); PRBool retval = PR_FALSE; elem->GetIndeterminate(&retval); return retval; }