LCOV - code coverage report
Current view: directory - layout/forms - nsButtonFrameRenderer.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 148 0 0.0 %
Date: 2012-06-02 Functions: 40 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is Mozilla Communicator client code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      26                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : #include "nsButtonFrameRenderer.h"
      38                 : #include "nsCSSRendering.h"
      39                 : #include "nsPresContext.h"
      40                 : #include "nsGkAtoms.h"
      41                 : #include "nsCSSPseudoElements.h"
      42                 : #include "nsINameSpaceManager.h"
      43                 : #include "nsStyleSet.h"
      44                 : #include "nsDisplayList.h"
      45                 : #include "nsITheme.h"
      46                 : #include "nsThemeConstants.h"
      47                 : #include "nsEventStates.h"
      48                 : #include "mozilla/dom/Element.h"
      49                 : 
      50                 : #define ACTIVE   "active"
      51                 : #define HOVER    "hover"
      52                 : #define FOCUS    "focus"
      53                 : 
      54               0 : nsButtonFrameRenderer::nsButtonFrameRenderer()
      55                 : {
      56               0 :   MOZ_COUNT_CTOR(nsButtonFrameRenderer);
      57               0 : }
      58                 : 
      59               0 : nsButtonFrameRenderer::~nsButtonFrameRenderer()
      60                 : {
      61               0 :   MOZ_COUNT_DTOR(nsButtonFrameRenderer);
      62               0 : }
      63                 : 
      64                 : void
      65               0 : nsButtonFrameRenderer::SetFrame(nsFrame* aFrame, nsPresContext* aPresContext)
      66                 : {
      67               0 :   mFrame = aFrame;
      68               0 :   ReResolveStyles(aPresContext);
      69               0 : }
      70                 : 
      71                 : nsIFrame*
      72               0 : nsButtonFrameRenderer::GetFrame()
      73                 : {
      74               0 :   return mFrame;
      75                 : }
      76                 : 
      77                 : void
      78               0 : nsButtonFrameRenderer::SetDisabled(bool aDisabled, bool notify)
      79                 : {
      80               0 :   if (aDisabled)
      81               0 :     mFrame->GetContent()->SetAttr(kNameSpaceID_None, nsGkAtoms::disabled, EmptyString(),
      82               0 :                                   notify);
      83                 :   else
      84               0 :     mFrame->GetContent()->UnsetAttr(kNameSpaceID_None, nsGkAtoms::disabled, notify);
      85               0 : }
      86                 : 
      87                 : bool
      88               0 : nsButtonFrameRenderer::isDisabled() 
      89                 : {
      90               0 :   return mFrame->GetContent()->AsElement()->
      91               0 :     State().HasState(NS_EVENT_STATE_DISABLED);
      92                 : }
      93                 : 
      94                 : class nsDisplayButtonBoxShadowOuter : public nsDisplayItem {
      95                 : public:
      96               0 :   nsDisplayButtonBoxShadowOuter(nsDisplayListBuilder* aBuilder,
      97                 :                                 nsButtonFrameRenderer* aRenderer)
      98               0 :     : nsDisplayItem(aBuilder, aRenderer->GetFrame()), mBFR(aRenderer) {
      99               0 :     MOZ_COUNT_CTOR(nsDisplayButtonBoxShadowOuter);
     100               0 :   }
     101                 : #ifdef NS_BUILD_REFCNT_LOGGING
     102               0 :   virtual ~nsDisplayButtonBoxShadowOuter() {
     103               0 :     MOZ_COUNT_DTOR(nsDisplayButtonBoxShadowOuter);
     104               0 :   }
     105                 : #endif  
     106                 :   
     107                 :   virtual void Paint(nsDisplayListBuilder* aBuilder,
     108                 :                      nsRenderingContext* aCtx);
     109                 :   virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder);
     110               0 :   NS_DISPLAY_DECL_NAME("ButtonBoxShadowOuter", TYPE_BUTTON_BOX_SHADOW_OUTER)
     111                 : private:
     112                 :   nsButtonFrameRenderer* mBFR;
     113                 : };
     114                 : 
     115                 : nsRect
     116               0 : nsDisplayButtonBoxShadowOuter::GetBounds(nsDisplayListBuilder* aBuilder) {
     117               0 :   return mFrame->GetVisualOverflowRectRelativeToSelf() + ToReferenceFrame();
     118                 : }
     119                 : 
     120                 : void
     121               0 : nsDisplayButtonBoxShadowOuter::Paint(nsDisplayListBuilder* aBuilder,
     122                 :                                      nsRenderingContext* aCtx) {
     123               0 :   nsRect frameRect = nsRect(ToReferenceFrame(), mFrame->GetSize());
     124                 : 
     125               0 :   nsRect buttonRect;
     126               0 :   mBFR->GetButtonRect(frameRect, buttonRect);
     127                 : 
     128                 :   nsCSSRendering::PaintBoxShadowOuter(mFrame->PresContext(), *aCtx, mFrame,
     129               0 :                                       buttonRect, mVisibleRect);
     130               0 : }
     131                 : 
     132                 : class nsDisplayButtonBorderBackground : public nsDisplayItem {
     133                 : public:
     134               0 :   nsDisplayButtonBorderBackground(nsDisplayListBuilder* aBuilder,
     135                 :                                   nsButtonFrameRenderer* aRenderer)
     136               0 :     : nsDisplayItem(aBuilder, aRenderer->GetFrame()), mBFR(aRenderer) {
     137               0 :     MOZ_COUNT_CTOR(nsDisplayButtonBorderBackground);
     138               0 :   }
     139                 : #ifdef NS_BUILD_REFCNT_LOGGING
     140               0 :   virtual ~nsDisplayButtonBorderBackground() {
     141               0 :     MOZ_COUNT_DTOR(nsDisplayButtonBorderBackground);
     142               0 :   }
     143                 : #endif  
     144                 :   
     145               0 :   virtual void HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
     146                 :                        HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames) {
     147               0 :     aOutFrames->AppendElement(mFrame);
     148               0 :   }
     149                 :   virtual void Paint(nsDisplayListBuilder* aBuilder,
     150                 :                      nsRenderingContext* aCtx);
     151               0 :   NS_DISPLAY_DECL_NAME("ButtonBorderBackground", TYPE_BUTTON_BORDER_BACKGROUND)
     152                 : private:
     153                 :   nsButtonFrameRenderer* mBFR;
     154                 : };
     155                 : 
     156                 : class nsDisplayButtonForeground : public nsDisplayItem {
     157                 : public:
     158               0 :   nsDisplayButtonForeground(nsDisplayListBuilder* aBuilder,
     159                 :                             nsButtonFrameRenderer* aRenderer)
     160               0 :     : nsDisplayItem(aBuilder, aRenderer->GetFrame()), mBFR(aRenderer) {
     161               0 :     MOZ_COUNT_CTOR(nsDisplayButtonForeground);
     162               0 :   }
     163                 : #ifdef NS_BUILD_REFCNT_LOGGING
     164               0 :   virtual ~nsDisplayButtonForeground() {
     165               0 :     MOZ_COUNT_DTOR(nsDisplayButtonForeground);
     166               0 :   }
     167                 : #endif  
     168                 : 
     169                 :   virtual void Paint(nsDisplayListBuilder* aBuilder,
     170                 :                      nsRenderingContext* aCtx);
     171               0 :   NS_DISPLAY_DECL_NAME("ButtonForeground", TYPE_BUTTON_FOREGROUND)
     172                 : private:
     173                 :   nsButtonFrameRenderer* mBFR;
     174                 : };
     175                 : 
     176               0 : void nsDisplayButtonBorderBackground::Paint(nsDisplayListBuilder* aBuilder,
     177                 :                                             nsRenderingContext* aCtx)
     178                 : {
     179               0 :   NS_ASSERTION(mFrame, "No frame?");
     180               0 :   nsPresContext* pc = mFrame->PresContext();
     181               0 :   nsRect r = nsRect(ToReferenceFrame(), mFrame->GetSize());
     182                 :   
     183                 :   // draw the border and background inside the focus and outline borders
     184                 :   mBFR->PaintBorderAndBackground(pc, *aCtx, mVisibleRect, r,
     185               0 :                                  aBuilder->GetBackgroundPaintFlags());
     186               0 : }
     187                 : 
     188               0 : void nsDisplayButtonForeground::Paint(nsDisplayListBuilder* aBuilder,
     189                 :                                       nsRenderingContext* aCtx)
     190                 : {
     191               0 :   nsPresContext *presContext = mFrame->PresContext();
     192               0 :   const nsStyleDisplay *disp = mFrame->GetStyleDisplay();
     193               0 :   if (!mFrame->IsThemed(disp) ||
     194               0 :       !presContext->GetTheme()->ThemeDrawsFocusForWidget(presContext, mFrame, disp->mAppearance)) {
     195                 :     // draw the focus and outline borders
     196               0 :     nsRect r = nsRect(ToReferenceFrame(), mFrame->GetSize());
     197               0 :     mBFR->PaintOutlineAndFocusBorders(presContext, *aCtx, mVisibleRect, r);
     198                 :   }
     199               0 : }
     200                 : 
     201                 : nsresult
     202               0 : nsButtonFrameRenderer::DisplayButton(nsDisplayListBuilder* aBuilder,
     203                 :                                      nsDisplayList* aBackground,
     204                 :                                      nsDisplayList* aForeground)
     205                 : {
     206               0 :   if (mFrame->GetStyleBorder()->mBoxShadow) {
     207                 :     nsresult rv = aBackground->AppendNewToTop(new (aBuilder)
     208               0 :         nsDisplayButtonBoxShadowOuter(aBuilder, this));
     209               0 :     NS_ENSURE_SUCCESS(rv, rv);
     210                 :   }
     211                 : 
     212                 :   nsresult rv = aBackground->AppendNewToTop(new (aBuilder)
     213               0 :       nsDisplayButtonBorderBackground(aBuilder, this));
     214               0 :   NS_ENSURE_SUCCESS(rv, rv);
     215                 : 
     216                 :   return aForeground->AppendNewToTop(new (aBuilder)
     217               0 :       nsDisplayButtonForeground(aBuilder, this));
     218                 : }
     219                 : 
     220                 : void
     221               0 : nsButtonFrameRenderer::PaintOutlineAndFocusBorders(nsPresContext* aPresContext,
     222                 :           nsRenderingContext& aRenderingContext,
     223                 :           const nsRect& aDirtyRect,
     224                 :           const nsRect& aRect)
     225                 : {
     226                 :   // once we have all that we'll draw the focus if we have it. We will
     227                 :   // need to draw 2 focuses, the inner and the outer. This is so we
     228                 :   // can do any kind of look and feel. Some buttons have focus on the
     229                 :   // outside like mac and motif. While others like windows have it
     230                 :   // inside (dotted line).  Usually only one will be specifed. But I
     231                 :   // guess you could have both if you wanted to.
     232                 : 
     233               0 :   nsRect rect;
     234                 : 
     235               0 :   if (mOuterFocusStyle) {
     236                 :     // ---------- paint the outer focus border -------------
     237                 : 
     238               0 :     GetButtonOuterFocusRect(aRect, rect);
     239                 : 
     240                 :     nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, mFrame,
     241               0 :                                 aDirtyRect, rect, mOuterFocusStyle);
     242                 :   }
     243                 : 
     244               0 :   if (mInnerFocusStyle) { 
     245                 :     // ---------- paint the inner focus border -------------
     246                 : 
     247               0 :     GetButtonInnerFocusRect(aRect, rect);
     248                 : 
     249                 :     nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, mFrame,
     250               0 :                                 aDirtyRect, rect, mInnerFocusStyle);
     251                 :   }
     252               0 : }
     253                 : 
     254                 : 
     255                 : void
     256               0 : nsButtonFrameRenderer::PaintBorderAndBackground(nsPresContext* aPresContext,
     257                 :           nsRenderingContext& aRenderingContext,
     258                 :           const nsRect& aDirtyRect,
     259                 :           const nsRect& aRect,
     260                 :           PRUint32 aBGFlags)
     261                 : 
     262                 : {
     263                 :   // get the button rect this is inside the focus and outline rects
     264               0 :   nsRect buttonRect;
     265               0 :   GetButtonRect(aRect, buttonRect);
     266                 : 
     267               0 :   nsStyleContext* context = mFrame->GetStyleContext();
     268                 : 
     269                 :   nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, mFrame,
     270               0 :                                   aDirtyRect, buttonRect, aBGFlags);
     271                 :   nsCSSRendering::PaintBoxShadowInner(aPresContext, aRenderingContext,
     272               0 :                                       mFrame, buttonRect, aDirtyRect);
     273                 :   nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, mFrame,
     274               0 :                               aDirtyRect, buttonRect, context);
     275               0 : }
     276                 : 
     277                 : 
     278                 : void
     279               0 : nsButtonFrameRenderer::GetButtonOuterFocusRect(const nsRect& aRect, nsRect& focusRect)
     280                 : {
     281               0 :   focusRect = aRect;
     282               0 : }
     283                 : 
     284                 : void
     285               0 : nsButtonFrameRenderer::GetButtonRect(const nsRect& aRect, nsRect& r)
     286                 : {
     287               0 :   r = aRect;
     288               0 :   r.Deflate(GetButtonOuterFocusBorderAndPadding());
     289               0 : }
     290                 : 
     291                 : 
     292                 : void
     293               0 : nsButtonFrameRenderer::GetButtonInnerFocusRect(const nsRect& aRect, nsRect& focusRect)
     294                 : {
     295               0 :   GetButtonRect(aRect, focusRect);
     296               0 :   focusRect.Deflate(GetButtonBorderAndPadding());
     297               0 :   focusRect.Deflate(GetButtonInnerFocusMargin());
     298               0 : }
     299                 : 
     300                 : 
     301                 : nsMargin
     302               0 : nsButtonFrameRenderer::GetButtonOuterFocusBorderAndPadding()
     303                 : {
     304               0 :   nsMargin result(0,0,0,0);
     305                 : 
     306               0 :   if (mOuterFocusStyle) {
     307               0 :     if (!mOuterFocusStyle->GetStylePadding()->GetPadding(result)) {
     308               0 :       NS_NOTYETIMPLEMENTED("percentage padding");
     309                 :     }
     310               0 :     result += mOuterFocusStyle->GetStyleBorder()->GetActualBorder();
     311                 :   }
     312                 : 
     313                 :   return result;
     314                 : }
     315                 : 
     316                 : nsMargin
     317               0 : nsButtonFrameRenderer::GetButtonBorderAndPadding()
     318                 : {
     319               0 :   return mFrame->GetUsedBorderAndPadding();
     320                 : }
     321                 : 
     322                 : /**
     323                 :  * Gets the size of the buttons border this is the union of the normal and disabled borders.
     324                 :  */
     325                 : nsMargin
     326               0 : nsButtonFrameRenderer::GetButtonInnerFocusMargin()
     327                 : {
     328               0 :   nsMargin innerFocusMargin(0,0,0,0);
     329                 : 
     330               0 :   if (mInnerFocusStyle) {
     331               0 :     const nsStyleMargin* margin = mInnerFocusStyle->GetStyleMargin();
     332               0 :     if (!margin->GetMargin(innerFocusMargin)) {
     333               0 :       NS_NOTYETIMPLEMENTED("percentage margin");
     334                 :     }
     335                 :   }
     336                 : 
     337                 :   return innerFocusMargin;
     338                 : }
     339                 : 
     340                 : nsMargin
     341               0 : nsButtonFrameRenderer::GetButtonInnerFocusBorderAndPadding()
     342                 : {
     343               0 :   nsMargin result(0,0,0,0);
     344                 : 
     345               0 :   if (mInnerFocusStyle) {
     346               0 :     if (!mInnerFocusStyle->GetStylePadding()->GetPadding(result)) {
     347               0 :       NS_NOTYETIMPLEMENTED("percentage padding");
     348                 :     }
     349               0 :     result += mInnerFocusStyle->GetStyleBorder()->GetActualBorder();
     350                 :   }
     351                 : 
     352                 :   return result;
     353                 : }
     354                 : 
     355                 : // gets all the focus borders and padding that will be added to the regular border
     356                 : nsMargin
     357               0 : nsButtonFrameRenderer::GetAddedButtonBorderAndPadding()
     358                 : {
     359               0 :   return GetButtonOuterFocusBorderAndPadding() + GetButtonInnerFocusMargin() + GetButtonInnerFocusBorderAndPadding();
     360                 : }
     361                 : 
     362                 : /**
     363                 :  * Call this when styles change
     364                 :  */
     365                 : void
     366               0 : nsButtonFrameRenderer::ReResolveStyles(nsPresContext* aPresContext)
     367                 : {
     368                 :   // get all the styles
     369               0 :   nsStyleContext* context = mFrame->GetStyleContext();
     370               0 :   nsStyleSet *styleSet = aPresContext->StyleSet();
     371                 : 
     372                 :   // style for the inner such as a dotted line (Windows)
     373                 :   mInnerFocusStyle =
     374               0 :     styleSet->ProbePseudoElementStyle(mFrame->GetContent()->AsElement(),
     375                 :                                       nsCSSPseudoElements::ePseudo_mozFocusInner,
     376               0 :                                       context);
     377                 : 
     378                 :   // style for outer focus like a ridged border (MAC).
     379                 :   mOuterFocusStyle =
     380               0 :     styleSet->ProbePseudoElementStyle(mFrame->GetContent()->AsElement(),
     381                 :                                       nsCSSPseudoElements::ePseudo_mozFocusOuter,
     382               0 :                                       context);
     383               0 : }
     384                 : 
     385                 : nsStyleContext*
     386               0 : nsButtonFrameRenderer::GetStyleContext(PRInt32 aIndex) const
     387                 : {
     388               0 :   switch (aIndex) {
     389                 :   case NS_BUTTON_RENDERER_FOCUS_INNER_CONTEXT_INDEX:
     390               0 :     return mInnerFocusStyle;
     391                 :   case NS_BUTTON_RENDERER_FOCUS_OUTER_CONTEXT_INDEX:
     392               0 :     return mOuterFocusStyle;
     393                 :   default:
     394               0 :     return nsnull;
     395                 :   }
     396                 : }
     397                 : 
     398                 : void 
     399               0 : nsButtonFrameRenderer::SetStyleContext(PRInt32 aIndex, nsStyleContext* aStyleContext)
     400                 : {
     401               0 :   switch (aIndex) {
     402                 :   case NS_BUTTON_RENDERER_FOCUS_INNER_CONTEXT_INDEX:
     403               0 :     mInnerFocusStyle = aStyleContext;
     404               0 :     break;
     405                 :   case NS_BUTTON_RENDERER_FOCUS_OUTER_CONTEXT_INDEX:
     406               0 :     mOuterFocusStyle = aStyleContext;
     407               0 :     break;
     408                 :   }
     409               0 : }

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