gecko-dev/layout/generic/nsVideoFrame.cpp

348 lines
11 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* ***** 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 code.
*
* The Initial Developer of the Original Code is the Mozilla Corporation.
* Portions created by the Initial Developer are Copyright (C) 2007
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Chris Double <chris.double@double.co.nz>
*
* Alternatively, the contents of this file may be used under the terms of
* either 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 ***** */
/* rendering object for the HTML <video> element */
#include "nsHTMLParts.h"
#include "nsCOMPtr.h"
#include "nsIServiceManager.h"
#include "nsGkAtoms.h"
#include "nsVideoFrame.h"
#include "nsHTMLVideoElement.h"
#include "nsIDOMHTMLVideoElement.h"
#include "nsDisplayList.h"
#include "nsIRenderingContext.h"
#include "gfxContext.h"
#include "gfxImageSurface.h"
#include "nsPresContext.h"
#include "nsTransform2D.h"
#include "nsContentCreatorFunctions.h"
#include "nsBoxLayoutState.h"
#include "nsBoxFrame.h"
nsIFrame*
NS_NewHTMLVideoFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsVideoFrame(aContext);
}
nsVideoFrame::nsVideoFrame(nsStyleContext* aContext) :
nsContainerFrame(aContext)
{
}
nsVideoFrame::~nsVideoFrame()
{
}
NS_INTERFACE_MAP_BEGIN(nsVideoFrame)
NS_INTERFACE_MAP_ENTRY(nsIAnonymousContentCreator)
#ifdef NS_DEBUG
NS_INTERFACE_MAP_ENTRY(nsIFrameDebug)
#endif
NS_INTERFACE_MAP_END_INHERITING(nsContainerFrame)
NS_IMETHODIMP_(nsrefcnt)
nsVideoFrame::AddRef(void)
{
return NS_OK;
}
NS_IMETHODIMP_(nsrefcnt)
nsVideoFrame::Release(void)
{
return NS_OK;
}
nsresult
nsVideoFrame::CreateAnonymousContent(nsTArray<nsIContent*>& aElements)
{
// Set up "videocontrols" XUL element which will be XBL-bound to the
// actual controls.
nsPresContext* presContext = PresContext();
nsNodeInfoManager *nodeInfoManager =
presContext->Document()->NodeInfoManager();
nsCOMPtr<nsINodeInfo> nodeInfo;
nsresult rv = nodeInfoManager->GetNodeInfo(nsGkAtoms::videocontrols, nsnull,
kNameSpaceID_XUL, getter_AddRefs(nodeInfo));
NS_ENSURE_SUCCESS(rv, rv);
rv = NS_NewElement(getter_AddRefs(mVideoControls), kNameSpaceID_XUL, nodeInfo, PR_FALSE);
NS_ENSURE_SUCCESS(rv, rv);
if (!aElements.AppendElement(mVideoControls))
return NS_ERROR_OUT_OF_MEMORY;
return NS_OK;
}
void
nsVideoFrame::Destroy()
{
nsContentUtils::DestroyAnonymousContent(&mVideoControls);
nsContainerFrame::Destroy();
}
PRBool
nsVideoFrame::IsLeaf() const
{
return PR_TRUE;
}
void
nsVideoFrame::PaintVideo(nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect, nsPoint aPt)
{
gfxContext* ctx = static_cast<gfxContext*>(aRenderingContext.GetNativeGraphicData(nsIRenderingContext::NATIVE_THEBES_CONTEXT));
// TODO: handle the situation where the frame size is not the same as the
// video size, by drawing to the largest rectangle that fits in the frame
// whose aspect ratio equals the video's aspect ratio
nsRect area = GetContentRect() - GetPosition() + aPt;
nsPresContext* presContext = PresContext();
gfxRect r = gfxRect(presContext->AppUnitsToGfxUnits(area.x),
presContext->AppUnitsToGfxUnits(area.y),
presContext->AppUnitsToGfxUnits(area.width),
presContext->AppUnitsToGfxUnits(area.height));
nsHTMLVideoElement* element = static_cast<nsHTMLVideoElement*>(GetContent());
element->Paint(ctx, r);
}
NS_IMETHODIMP
nsVideoFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aMetrics,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsVideoFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowState, aMetrics, aStatus);
NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
("enter nsVideoFrame::Reflow: availSize=%d,%d",
aReflowState.availableWidth, aReflowState.availableHeight));
NS_PRECONDITION(mState & NS_FRAME_IN_REFLOW, "frame is not in reflow");
aStatus = NS_FRAME_COMPLETE;
aMetrics.width = aReflowState.ComputedWidth();
aMetrics.height = aReflowState.ComputedHeight();
// stash this away so we can compute our inner area later
mBorderPadding = aReflowState.mComputedBorderPadding;
aMetrics.width += mBorderPadding.left + mBorderPadding.right;
aMetrics.height += mBorderPadding.top + mBorderPadding.bottom;
nsIFrame* child = mFrames.FirstChild();
if (child) {
NS_ASSERTION(child->GetContent() == mVideoControls,
"What is this child doing here?");
nsBoxLayoutState boxState(PresContext(), aReflowState.rendContext);
nsBoxFrame::LayoutChildAt(boxState, child,
nsRect(mBorderPadding.left, mBorderPadding.right,
aReflowState.ComputedWidth(), aReflowState.ComputedHeight()));
}
aMetrics.mOverflowArea.SetRect(0, 0, aMetrics.width, aMetrics.height);
FinishAndStoreOverflow(&aMetrics);
if (mRect.width != aMetrics.width || mRect.height != aMetrics.height) {
Invalidate(nsRect(0, 0, mRect.width, mRect.height), PR_FALSE);
}
NS_FRAME_TRACE(NS_FRAME_TRACE_CALLS,
("exit nsVideoFrame::Reflow: size=%d,%d",
aMetrics.width, aMetrics.height));
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aMetrics);
return NS_OK;
}
static void PaintVideo(nsIFrame* aFrame, nsIRenderingContext* aCtx,
const nsRect& aDirtyRect, nsPoint aPt)
{
#if 0
double start = double(PR_IntervalToMilliseconds(PR_IntervalNow()))/1000.0;
#endif
static_cast<nsVideoFrame*>(aFrame)->PaintVideo(*aCtx, aDirtyRect, aPt);
#if 0
double end = double(PR_IntervalToMilliseconds(PR_IntervalNow()))/1000.0;
printf("PaintVideo: %f\n", (float)end - (float)start);
#endif
}
NS_IMETHODIMP
nsVideoFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
if (!IsVisibleForPainting(aBuilder))
return NS_OK;
DO_GLOBAL_REFLOW_COUNT_DSP("nsVideoFrame");
nsresult rv = DisplayBorderBackgroundOutline(aBuilder, aLists);
NS_ENSURE_SUCCESS(rv, rv);
rv = aLists.Content()->AppendNewToTop(new (aBuilder) nsDisplayGeneric(this, ::PaintVideo, "Video"));
NS_ENSURE_SUCCESS(rv, rv);
if (mFrames.FirstChild()) {
rv = mFrames.FirstChild()->BuildDisplayListForStackingContext(aBuilder, aDirtyRect, aLists.Content());
}
return rv;
}
nsIAtom*
nsVideoFrame::GetType() const
{
return nsGkAtoms::HTMLVideoFrame;
}
#ifdef ACCESSIBILITY
NS_IMETHODIMP
nsVideoFrame::GetAccessible(nsIAccessible** aAccessible)
{
return NS_ERROR_FAILURE;
}
#endif
#ifdef DEBUG
NS_IMETHODIMP
nsVideoFrame::GetFrameName(nsAString& aResult) const
{
return MakeFrameName(NS_LITERAL_STRING("HTMLVideo"), aResult);
}
#endif
nsSize nsVideoFrame::ComputeSize(nsIRenderingContext *aRenderingContext,
nsSize aCBSize,
nscoord aAvailableWidth,
nsSize aMargin,
nsSize aBorder,
nsSize aPadding,
PRBool aShrinkWrap)
{
nsSize size = GetVideoSize();
IntrinsicSize intrinsicSize;
intrinsicSize.width.SetCoordValue(size.width);
intrinsicSize.height.SetCoordValue(size.height);
nsSize& intrinsicRatio = size; // won't actually be used
return nsLayoutUtils::ComputeSizeWithIntrinsicDimensions(aRenderingContext,
this,
intrinsicSize,
intrinsicRatio,
aCBSize,
aMargin,
aBorder,
aPadding);
}
nscoord nsVideoFrame::GetMinWidth(nsIRenderingContext *aRenderingContext)
{
// XXX The caller doesn't account for constraints of the height,
// min-height, and max-height properties.
nscoord result = GetVideoSize().width;
DISPLAY_MIN_WIDTH(this, result);
return result;
}
nscoord nsVideoFrame::GetPrefWidth(nsIRenderingContext *aRenderingContext)
{
// XXX The caller doesn't account for constraints of the height,
// min-height, and max-height properties.
nscoord result = GetVideoSize().width;
DISPLAY_PREF_WIDTH(this, result);
return result;
}
nsSize nsVideoFrame::GetIntrinsicRatio()
{
return GetVideoSize();
}
nsSize nsVideoFrame::GetVideoSize()
{
// Defaulting size to 300x150 if no size given.
nsIntSize size(300,150);
nsHTMLVideoElement* element = static_cast<nsHTMLVideoElement*>(GetContent());
if (element) {
nsresult rv;
size = element->GetVideoSize(size);
if (element->HasAttr(kNameSpaceID_None, nsGkAtoms::width)) {
PRInt32 width = -1;
rv = element->GetWidth(&width);
if (NS_SUCCEEDED(rv)) {
size.width = width;
}
}
if (element->HasAttr(kNameSpaceID_None, nsGkAtoms::height)) {
PRInt32 height = -1;
rv = element->GetHeight(&height);
if (NS_SUCCEEDED(rv)) {
size.height = height;
}
}
}
return nsSize(nsPresContext::CSSPixelsToAppUnits(size.width),
nsPresContext::CSSPixelsToAppUnits(size.height));
}
NS_IMETHODIMP nsVideoFrame::Freeze()
{
nsHTMLVideoElement* element = static_cast<nsHTMLVideoElement*>(GetContent());
element->Pause();
return NS_OK;
}
NS_IMETHODIMP nsVideoFrame::Thaw()
{
nsHTMLVideoElement* element = static_cast<nsHTMLVideoElement*>(GetContent());
element->Play();
return NS_OK;
}