LCOV - code coverage report
Current view: directory - layout/forms - nsProgressFrame.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 123 0 0.0 %
Date: 2012-06-02 Functions: 18 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.org code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is Mozilla Foundation
      18                 :  * Portions created by the Initial Developer are Copyright (C) 2010
      19                 :  * the Initial Developer. All Rights Reserved.
      20                 :  *
      21                 :  * Contributor(s):
      22                 :  *   Mounir Lamouri <mounir.lamouri@mozilla.com> (original author)
      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                 : 
      38                 : #include "nsProgressFrame.h"
      39                 : 
      40                 : #include "nsIDOMHTMLProgressElement.h"
      41                 : #include "nsIContent.h"
      42                 : #include "prtypes.h"
      43                 : #include "nsPresContext.h"
      44                 : #include "nsGkAtoms.h"
      45                 : #include "nsINameSpaceManager.h"
      46                 : #include "nsIDocument.h"
      47                 : #include "nsIPresShell.h"
      48                 : #include "nsNodeInfoManager.h"
      49                 : #include "nsINodeInfo.h"
      50                 : #include "nsContentCreatorFunctions.h"
      51                 : #include "nsContentUtils.h"
      52                 : #include "nsFormControlFrame.h"
      53                 : #include "nsFontMetrics.h"
      54                 : #include "mozilla/dom/Element.h"
      55                 : 
      56                 : 
      57                 : nsIFrame*
      58               0 : NS_NewProgressFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
      59                 : {
      60               0 :   return new (aPresShell) nsProgressFrame(aContext);
      61                 : }
      62                 : 
      63               0 : NS_IMPL_FRAMEARENA_HELPERS(nsProgressFrame)
      64                 : 
      65               0 : nsProgressFrame::nsProgressFrame(nsStyleContext* aContext)
      66                 :   : nsContainerFrame(aContext)
      67               0 :   , mBarDiv(nsnull)
      68                 : {
      69               0 : }
      70                 : 
      71               0 : nsProgressFrame::~nsProgressFrame()
      72                 : {
      73               0 : }
      74                 : 
      75                 : void
      76               0 : nsProgressFrame::DestroyFrom(nsIFrame* aDestructRoot)
      77                 : {
      78               0 :   NS_ASSERTION(!GetPrevContinuation(),
      79                 :                "nsProgressFrame should not have continuations; if it does we "
      80                 :                "need to call RegUnregAccessKey only for the first.");
      81               0 :   nsFormControlFrame::RegUnRegAccessKey(static_cast<nsIFrame*>(this), false);
      82               0 :   nsContentUtils::DestroyAnonymousContent(&mBarDiv);
      83               0 :   nsContainerFrame::DestroyFrom(aDestructRoot);
      84               0 : }
      85                 : 
      86                 : nsresult
      87               0 : nsProgressFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements)
      88                 : {
      89                 :   // Get the NodeInfoManager and tag necessary to create the progress bar div.
      90               0 :   nsCOMPtr<nsIDocument> doc = mContent->GetDocument();
      91                 : 
      92               0 :   nsCOMPtr<nsINodeInfo> nodeInfo;
      93                 :   nodeInfo = doc->NodeInfoManager()->GetNodeInfo(nsGkAtoms::div, nsnull,
      94                 :                                                  kNameSpaceID_XHTML,
      95               0 :                                                  nsIDOMNode::ELEMENT_NODE);
      96               0 :   NS_ENSURE_TRUE(nodeInfo, NS_ERROR_OUT_OF_MEMORY);
      97                 : 
      98                 :   // Create the div.
      99               0 :   nsresult rv = NS_NewHTMLElement(getter_AddRefs(mBarDiv), nodeInfo.forget(),
     100               0 :                                   mozilla::dom::NOT_FROM_PARSER);
     101               0 :   NS_ENSURE_SUCCESS(rv, rv);
     102                 : 
     103                 :   // Associate ::-moz-progress-bar pseudo-element to the anonymous child.
     104               0 :   nsCSSPseudoElements::Type pseudoType = nsCSSPseudoElements::ePseudo_mozProgressBar;
     105                 :   nsRefPtr<nsStyleContext> newStyleContext = PresContext()->StyleSet()->
     106                 :     ResolvePseudoElementStyle(mContent->AsElement(), pseudoType,
     107               0 :                               GetStyleContext());
     108                 : 
     109               0 :   if (!aElements.AppendElement(ContentInfo(mBarDiv, newStyleContext))) {
     110               0 :     return NS_ERROR_OUT_OF_MEMORY;
     111                 :   }
     112                 : 
     113               0 :   return NS_OK;
     114                 : }
     115                 : 
     116                 : void
     117               0 : nsProgressFrame::AppendAnonymousContentTo(nsBaseContentList& aElements,
     118                 :                                           PRUint32 aFilter)
     119                 : {
     120               0 :   aElements.MaybeAppendElement(mBarDiv);
     121               0 : }
     122                 : 
     123               0 : NS_QUERYFRAME_HEAD(nsProgressFrame)
     124               0 :   NS_QUERYFRAME_ENTRY(nsProgressFrame)
     125               0 :   NS_QUERYFRAME_ENTRY(nsIAnonymousContentCreator)
     126               0 : NS_QUERYFRAME_TAIL_INHERITING(nsContainerFrame)
     127                 : 
     128                 : 
     129                 : NS_IMETHODIMP
     130               0 : nsProgressFrame::BuildDisplayList(nsDisplayListBuilder*   aBuilder,
     131                 :                                   const nsRect&           aDirtyRect,
     132                 :                                   const nsDisplayListSet& aLists)
     133                 : {
     134               0 :   return BuildDisplayListForInline(aBuilder, aDirtyRect, aLists);
     135                 : }
     136                 : 
     137               0 : NS_IMETHODIMP nsProgressFrame::Reflow(nsPresContext*           aPresContext,
     138                 :                                       nsHTMLReflowMetrics&     aDesiredSize,
     139                 :                                       const nsHTMLReflowState& aReflowState,
     140                 :                                       nsReflowStatus&          aStatus)
     141                 : {
     142               0 :   DO_GLOBAL_REFLOW_COUNT("nsProgressFrame");
     143               0 :   DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
     144                 : 
     145               0 :   NS_ASSERTION(mBarDiv, "Progress bar div must exist!");
     146               0 :   NS_ASSERTION(!GetPrevContinuation(),
     147                 :                "nsProgressFrame should not have continuations; if it does we "
     148                 :                "need to call RegUnregAccessKey only for the first.");
     149                 : 
     150               0 :   if (mState & NS_FRAME_FIRST_REFLOW) {
     151               0 :     nsFormControlFrame::RegUnRegAccessKey(this, true);
     152                 :   }
     153                 : 
     154               0 :   nsIFrame* barFrame = mBarDiv->GetPrimaryFrame();
     155               0 :   NS_ASSERTION(barFrame, "The progress frame should have a child with a frame!");
     156                 : 
     157               0 :   ReflowBarFrame(barFrame, aPresContext, aReflowState, aStatus);
     158                 : 
     159               0 :   aDesiredSize.width = aReflowState.ComputedWidth() +
     160               0 :                        aReflowState.mComputedBorderPadding.LeftRight();
     161               0 :   aDesiredSize.height = aReflowState.ComputedHeight() +
     162               0 :                         aReflowState.mComputedBorderPadding.TopBottom();
     163                 :   aDesiredSize.height = NS_CSS_MINMAX(aDesiredSize.height,
     164                 :                                       aReflowState.mComputedMinHeight,
     165               0 :                                       aReflowState.mComputedMaxHeight);
     166                 : 
     167               0 :   aDesiredSize.SetOverflowAreasToDesiredBounds();
     168               0 :   ConsiderChildOverflow(aDesiredSize.mOverflowAreas, barFrame);
     169               0 :   FinishAndStoreOverflow(&aDesiredSize);
     170                 : 
     171               0 :   aStatus = NS_FRAME_COMPLETE;
     172                 : 
     173               0 :   NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
     174                 : 
     175               0 :   return NS_OK;
     176                 : }
     177                 : 
     178                 : void
     179               0 : nsProgressFrame::ReflowBarFrame(nsIFrame*                aBarFrame,
     180                 :                                 nsPresContext*           aPresContext,
     181                 :                                 const nsHTMLReflowState& aReflowState,
     182                 :                                 nsReflowStatus&          aStatus)
     183                 : {
     184               0 :   bool vertical = GetStyleDisplay()->mOrient == NS_STYLE_ORIENT_VERTICAL;
     185                 :   nsHTMLReflowState reflowState(aPresContext, aReflowState, aBarFrame,
     186                 :                                 nsSize(aReflowState.ComputedWidth(),
     187               0 :                                        NS_UNCONSTRAINEDSIZE));
     188                 :   nscoord size = vertical ? aReflowState.ComputedHeight()
     189               0 :                           : aReflowState.ComputedWidth();
     190               0 :   nscoord xoffset = aReflowState.mComputedBorderPadding.left;
     191               0 :   nscoord yoffset = aReflowState.mComputedBorderPadding.top;
     192                 : 
     193                 :   double position;
     194                 :   nsCOMPtr<nsIDOMHTMLProgressElement> progressElement =
     195               0 :     do_QueryInterface(mContent);
     196               0 :   progressElement->GetPosition(&position);
     197                 : 
     198                 :   // Force the bar's size to match the current progress.
     199                 :   // When indeterminate, the progress' size will be 100%.
     200               0 :   if (position >= 0.0) {
     201               0 :     size *= position;
     202                 :   }
     203                 : 
     204               0 :   if (!vertical && GetStyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL) {
     205               0 :     xoffset += aReflowState.ComputedWidth() - size;
     206                 :   }
     207                 : 
     208                 :   // The bar size is fixed in these cases:
     209                 :   // - the progress position is determined: the bar size is fixed according
     210                 :   //   to it's value.
     211                 :   // - the progress position is indeterminate and the bar appearance should be
     212                 :   //   shown as native: the bar size is forced to 100%.
     213                 :   // Otherwise (when the progress is indeterminate and the bar appearance isn't
     214                 :   // native), the bar size isn't fixed and can be set by the author.
     215               0 :   if (position != -1 || ShouldUseNativeStyle()) {
     216               0 :     if (vertical) {
     217                 :       // We want the bar to begin at the bottom.
     218               0 :       yoffset += aReflowState.ComputedHeight() - size;
     219                 : 
     220               0 :       size -= reflowState.mComputedMargin.TopBottom() +
     221               0 :               reflowState.mComputedBorderPadding.TopBottom();
     222               0 :       size = NS_MAX(size, 0);
     223               0 :       reflowState.SetComputedHeight(size);
     224                 :     } else {
     225               0 :       size -= reflowState.mComputedMargin.LeftRight() +
     226               0 :               reflowState.mComputedBorderPadding.LeftRight();
     227               0 :       size = NS_MAX(size, 0);
     228               0 :       reflowState.SetComputedWidth(size);
     229                 :     }
     230               0 :   } else if (vertical) {
     231                 :     // For vertical progress bars, we need to position the bar specificly when
     232                 :     // the width isn't constrained (position == -1 and !ShouldUseNativeStyle())
     233                 :     // because aReflowState.ComputedHeight() - size == 0.
     234               0 :     yoffset += aReflowState.ComputedHeight() - reflowState.ComputedHeight();
     235                 :   }
     236                 : 
     237               0 :   xoffset += reflowState.mComputedMargin.left;
     238               0 :   yoffset += reflowState.mComputedMargin.top;
     239                 : 
     240               0 :   nsHTMLReflowMetrics barDesiredSize;
     241                 :   ReflowChild(aBarFrame, aPresContext, barDesiredSize, reflowState, xoffset,
     242               0 :               yoffset, 0, aStatus);
     243                 :   FinishReflowChild(aBarFrame, aPresContext, &reflowState, barDesiredSize,
     244               0 :                     xoffset, yoffset, 0);
     245               0 : }
     246                 : 
     247                 : NS_IMETHODIMP
     248               0 : nsProgressFrame::AttributeChanged(PRInt32  aNameSpaceID,
     249                 :                                   nsIAtom* aAttribute,
     250                 :                                   PRInt32  aModType)
     251                 : {
     252               0 :   NS_ASSERTION(mBarDiv, "Progress bar div must exist!");
     253                 : 
     254               0 :   if (aNameSpaceID == kNameSpaceID_None &&
     255                 :       (aAttribute == nsGkAtoms::value || aAttribute == nsGkAtoms::max)) {
     256               0 :     nsIFrame* barFrame = mBarDiv->GetPrimaryFrame();
     257               0 :     NS_ASSERTION(barFrame, "The progress frame should have a child with a frame!");
     258               0 :     PresContext()->PresShell()->FrameNeedsReflow(barFrame, nsIPresShell::eResize,
     259               0 :                                                  NS_FRAME_IS_DIRTY);
     260               0 :     Invalidate(GetVisualOverflowRectRelativeToSelf());
     261                 :   }
     262                 : 
     263               0 :   return nsContainerFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
     264                 : }
     265                 : 
     266                 : nsSize
     267               0 : nsProgressFrame::ComputeAutoSize(nsRenderingContext *aRenderingContext,
     268                 :                                  nsSize aCBSize, nscoord aAvailableWidth,
     269                 :                                  nsSize aMargin, nsSize aBorder,
     270                 :                                  nsSize aPadding, bool aShrinkWrap)
     271                 : {
     272                 :   float inflation =
     273               0 :     nsLayoutUtils::FontSizeInflationFor(this, nsLayoutUtils::eInReflow);
     274               0 :   nsRefPtr<nsFontMetrics> fontMet;
     275               0 :   NS_ENSURE_SUCCESS(nsLayoutUtils::GetFontMetricsForFrame(this,
     276                 :                                                           getter_AddRefs(fontMet),
     277                 :                                                           inflation),
     278                 :                     nsSize(0, 0));
     279                 : 
     280               0 :   nsSize autoSize;
     281               0 :   autoSize.height = autoSize.width = fontMet->Font().size; // 1em
     282                 : 
     283               0 :   if (GetStyleDisplay()->mOrient == NS_STYLE_ORIENT_VERTICAL) {
     284               0 :     autoSize.height *= 10; // 10em
     285                 :   } else {
     286               0 :     autoSize.width *= 10; // 10em
     287                 :   }
     288                 : 
     289               0 :   return autoSize;
     290                 : }
     291                 : 
     292                 : nscoord
     293               0 : nsProgressFrame::GetMinWidth(nsRenderingContext *aRenderingContext)
     294                 : {
     295               0 :   nsRefPtr<nsFontMetrics> fontMet;
     296               0 :   NS_ENSURE_SUCCESS(
     297                 :       nsLayoutUtils::GetFontMetricsForFrame(this, getter_AddRefs(fontMet)), 0);
     298                 : 
     299               0 :   nscoord minWidth = fontMet->Font().size; // 1em
     300                 : 
     301               0 :   if (GetStyleDisplay()->mOrient == NS_STYLE_ORIENT_HORIZONTAL) {
     302               0 :     minWidth *= 10; // 10em
     303                 :   }
     304                 : 
     305               0 :   return minWidth;
     306                 : }
     307                 : 
     308                 : nscoord
     309               0 : nsProgressFrame::GetPrefWidth(nsRenderingContext *aRenderingContext)
     310                 : {
     311               0 :   return GetMinWidth(aRenderingContext);
     312                 : }
     313                 : 
     314                 : bool
     315               0 : nsProgressFrame::ShouldUseNativeStyle() const
     316                 : {
     317                 :   // Use the native style if these conditions are satisfied:
     318                 :   // - both frames use the native appearance;
     319                 :   // - neither frame has author specified rules setting the border or the
     320                 :   //   background.
     321               0 :   return GetStyleDisplay()->mAppearance == NS_THEME_PROGRESSBAR &&
     322               0 :          mBarDiv->GetPrimaryFrame()->GetStyleDisplay()->mAppearance == NS_THEME_PROGRESSBAR_CHUNK &&
     323               0 :          !PresContext()->HasAuthorSpecifiedRules(const_cast<nsProgressFrame*>(this),
     324               0 :                                                  NS_AUTHOR_SPECIFIED_BORDER | NS_AUTHOR_SPECIFIED_BACKGROUND) &&
     325               0 :          !PresContext()->HasAuthorSpecifiedRules(mBarDiv->GetPrimaryFrame(),
     326               0 :                                                  NS_AUTHOR_SPECIFIED_BORDER | NS_AUTHOR_SPECIFIED_BACKGROUND);
     327                 : }
     328                 : 

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