gecko/gfx/layers/Layers.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=8 et :
*/
/* ***** 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 Foundation
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Chris Jones <jones.chris.g@gmail.com>
*
* 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 ***** */
#include "ImageLayers.h"
#include "Layers.h"
#ifdef MOZ_LAYERS_HAVE_LOG
FILE*
FILEOrDefault(FILE* aFile)
{
return aFile ? aFile : stderr;
}
#endif // MOZ_LAYERS_HAVE_LOG
namespace {
// XXX pretty general utilities, could centralize
nsACString&
AppendToString(nsACString& s, const gfxPattern::GraphicsFilter& f,
const char* pfx="", const char* sfx="")
{
s += pfx;
switch (f) {
case gfxPattern::FILTER_FAST: s += "fast"; break;
case gfxPattern::FILTER_GOOD: s += "good"; break;
case gfxPattern::FILTER_BEST: s += "best"; break;
case gfxPattern::FILTER_NEAREST: s += "nearest"; break;
case gfxPattern::FILTER_BILINEAR: s += "bilinear"; break;
case gfxPattern::FILTER_GAUSSIAN: s += "gaussian"; break;
default:
NS_ERROR("unknown filter type");
s += "???";
}
return s += sfx;
}
nsACString&
AppendToString(nsACString& s, const gfxRGBA& c,
const char* pfx="", const char* sfx="")
{
s += pfx;
s += nsPrintfCString(
128, "rgba(%d, %d, %d, %g)",
PRUint8(c.r*255.0), PRUint8(c.g*255.0), PRUint8(c.b*255.0), c.a);
return s += sfx;
}
nsACString&
AppendToString(nsACString& s, const gfx3DMatrix& m,
const char* pfx="", const char* sfx="")
{
s += pfx;
if (m.IsIdentity())
s += "[ I ]";
else {
gfxMatrix matrix;
if (m.Is2D(&matrix)) {
s += nsPrintfCString(
96, "[ %g %g; %g %g; %g %g; ]",
matrix.xx, matrix.yx, matrix.xy, matrix.yy, matrix.x0, matrix.y0);
} else {
s += nsPrintfCString(
256, "[ %g %g %g %g; %g %g %g %g; %g %g %g %g; %g %g %g %g; ]",
m._11, m._12, m._13, m._14,
m._21, m._22, m._23, m._24,
m._31, m._32, m._33, m._34,
m._41, m._42, m._43, m._44);
}
}
return s += sfx;
}
nsACString&
AppendToString(nsACString& s, const nsIntRect& r,
const char* pfx="", const char* sfx="")
{
s += pfx;
s += nsPrintfCString(
256, "(x=%d, y=%d, w=%d, h=%d)",
r.x, r.y, r.width, r.height);
return s += sfx;
}
nsACString&
AppendToString(nsACString& s, const nsIntRegion& r,
const char* pfx="", const char* sfx="")
{
s += pfx;
nsIntRegionRectIterator it(r);
s += "< ";
while (const nsIntRect* sr = it.Next())
AppendToString(s, *sr) += "; ";
s += ">";
return s += sfx;
}
} // namespace <anon>
namespace mozilla {
namespace layers {
//--------------------------------------------------
// Layer
PRBool
Layer::CanUseOpaqueSurface()
{
// If the visible content in the layer is opaque, there is no need
// for an alpha channel.
if (GetContentFlags() & CONTENT_OPAQUE)
return PR_TRUE;
// Also, if this layer is the bottommost layer in a container which
// doesn't need an alpha channel, we can use an opaque surface for this
// layer too. Any transparent areas must be covered by something else
// in the container.
ContainerLayer* parent = GetParent();
return parent && parent->GetFirstChild() == this &&
parent->CanUseOpaqueSurface();
}
#ifdef MOZ_LAYERS_HAVE_LOG
void
Layer::Dump(FILE* aFile, const char* aPrefix)
{
DumpSelf(aFile, aPrefix);
if (Layer* kid = GetFirstChild()) {
nsCAutoString pfx(aPrefix);
pfx += " ";
kid->Dump(aFile, pfx.get());
}
if (Layer* next = GetNextSibling())
next->Dump(aFile, aPrefix);
}
void
Layer::DumpSelf(FILE* aFile, const char* aPrefix)
{
nsCAutoString str;
PrintInfo(str, aPrefix);
fprintf(FILEOrDefault(aFile), "%s\n", str.get());
}
void
Layer::Log(const char* aPrefix)
{
if (!IsLogEnabled())
return;
LogSelf(aPrefix);
if (Layer* kid = GetFirstChild()) {
nsCAutoString pfx(aPrefix);
pfx += " ";
kid->Log(pfx.get());
}
if (Layer* next = GetNextSibling())
next->Log(aPrefix);
}
void
Layer::LogSelf(const char* aPrefix)
{
if (!IsLogEnabled())
return;
nsCAutoString str;
PrintInfo(str, aPrefix);
MOZ_LAYERS_LOG(("%s", str.get()));
}
nsACString&
Layer::PrintInfo(nsACString& aTo, const char* aPrefix)
{
aTo += aPrefix;
aTo += nsPrintfCString(64, "%s%s (0x%p)", mManager->Name(), Name(), this);
if (mUseClipRect) {
AppendToString(aTo, mClipRect, " [clip=", "]");
}
if (!mTransform.IsIdentity()) {
AppendToString(aTo, mTransform, " [transform=", "]");
}
if (!mVisibleRegion.IsEmpty()) {
AppendToString(aTo, mVisibleRegion, " [visible=", "]");
}
if (1.0 != mOpacity) {
aTo.AppendPrintf(" [opacity=%g]", mOpacity);
}
if (GetContentFlags() & CONTENT_OPAQUE) {
aTo += " [opaqueContent]";
}
if (GetContentFlags() & CONTENT_NO_TEXT) {
aTo += " [noText]";
}
if (GetContentFlags() & CONTENT_NO_TEXT_OVER_TRANSPARENT) {
aTo += " [noTextOverTransparent]";
}
return aTo;
}
nsACString&
ThebesLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{
Layer::PrintInfo(aTo, aPrefix);
return mValidRegion.IsEmpty() ?
aTo : AppendToString(aTo, mValidRegion, " [valid=", "]");
}
nsACString&
ColorLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{
Layer::PrintInfo(aTo, aPrefix);
AppendToString(aTo, mColor, " [color=", "]");
return aTo;
}
nsACString&
CanvasLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{
Layer::PrintInfo(aTo, aPrefix);
if (mFilter != gfxPattern::FILTER_GOOD) {
AppendToString(aTo, mFilter, " [filter=", "]");
}
return aTo;
}
nsACString&
ImageLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{
Layer::PrintInfo(aTo, aPrefix);
if (mFilter != gfxPattern::FILTER_GOOD) {
AppendToString(aTo, mFilter, " [filter=", "]");
}
return aTo;
}
//--------------------------------------------------
// LayerManager
void
LayerManager::Dump(FILE* aFile, const char* aPrefix)
{
FILE* file = FILEOrDefault(aFile);
DumpSelf(file, aPrefix);
nsCAutoString pfx(aPrefix);
pfx += " ";
if (!GetRoot()) {
fprintf(file, "%s(null)", pfx.get());
return;
}
GetRoot()->Dump(file, pfx.get());
}
void
LayerManager::DumpSelf(FILE* aFile, const char* aPrefix)
{
nsCAutoString str;
PrintInfo(str, aPrefix);
fprintf(FILEOrDefault(aFile), "%s\n", str.get());
}
void
LayerManager::Log(const char* aPrefix)
{
if (!IsLogEnabled())
return;
LogSelf(aPrefix);
nsCAutoString pfx(aPrefix);
pfx += " ";
if (!GetRoot()) {
MOZ_LAYERS_LOG(("%s(null)", pfx.get()));
return;
}
GetRoot()->Log(pfx.get());
}
void
LayerManager::LogSelf(const char* aPrefix)
{
nsCAutoString str;
PrintInfo(str, aPrefix);
MOZ_LAYERS_LOG(("%s", str.get()));
}
nsACString&
LayerManager::PrintInfo(nsACString& aTo, const char* aPrefix)
{
aTo += aPrefix;
return aTo += nsPrintfCString(64, "%sLayerManager (0x%p)", Name(), this);
}
/*static*/ void
LayerManager::InitLog()
{
if (!sLog)
sLog = PR_NewLogModule("Layers");
}
/*static*/ bool
LayerManager::IsLogEnabled()
{
NS_ABORT_IF_FALSE(!!sLog,
"layer manager must be created before logging is allowed");
return PR_LOG_TEST(sLog, PR_LOG_DEBUG);
}
#else // !MOZ_LAYERS_HAVE_LOG
void Layer::Dump(FILE* aFile, const char* aPrefix) {}
void Layer::DumpSelf(FILE* aFile, const char* aPrefix) {}
void Layer::Log(const char* aPrefix) {}
void Layer::LogSelf(const char* aPrefix) {}
nsACString&
Layer::PrintInfo(nsACString& aTo, const char* aPrefix)
{ return aTo; }
nsACString&
ThebesLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{ return aTo; }
nsACString&
ColorLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{ return aTo; }
nsACString&
CanvasLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{ return aTo; }
nsACString&
ImageLayer::PrintInfo(nsACString& aTo, const char* aPrefix)
{ return aTo; }
void LayerManager::Dump(FILE* aFile, const char* aPrefix) {}
void LayerManager::DumpSelf(FILE* aFile, const char* aPrefix) {}
void LayerManager::Log(const char* aPrefix) {}
void LayerManager::LogSelf(const char* aPrefix) {}
nsACString&
LayerManager::PrintInfo(nsACString& aTo, const char* aPrefix)
{ return aTo; }
/*static*/ void LayerManager::InitLog() {}
/*static*/ bool LayerManager::IsLogEnabled() { return false; }
#endif // MOZ_LAYERS_HAVE_LOG
PRLogModuleInfo* LayerManager::sLog;
} // namespace layers
} // namespace mozilla