gecko-dev/gfx/layers/Compositor.cpp
2013-08-12 11:17:23 +12:00

103 lines
3.2 KiB
C++

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/layers/Compositor.h"
#include "base/message_loop.h" // for MessageLoop
#include "mozilla/layers/CompositorParent.h" // for CompositorParent
#include "mozilla/layers/Effects.h" // for Effect, EffectChain, etc
#include "mozilla/mozalloc.h" // for operator delete, etc
namespace mozilla {
namespace gfx {
class Matrix4x4;
}
namespace layers {
/* static */ LayersBackend Compositor::sBackend = LAYERS_NONE;
/* static */ LayersBackend
Compositor::GetBackend()
{
AssertOnCompositorThread();
return sBackend;
}
/* static */ void
Compositor::AssertOnCompositorThread()
{
MOZ_ASSERT(CompositorParent::CompositorLoop() ==
MessageLoop::current(),
"Can only call this from the compositor thread!");
}
void
Compositor::DrawDiagnostics(DiagnosticFlags aFlags,
const gfx::Rect& rect,
const gfx::Rect& aClipRect,
const gfx::Matrix4x4& aTransform,
const gfx::Point& aOffset)
{
if (!(mDiagnosticTypes & DIAGNOSTIC_TILE_BORDERS) && (aFlags & DIAGNOSTIC_TILE)) {
return;
}
if (!(mDiagnosticTypes & DIAGNOSTIC_LAYER_BORDERS)) {
return;
}
int lWidth = 2;
float opacity = 0.7;
gfx::Color color;
if (aFlags & DIAGNOSTIC_CONTENT) {
color = gfx::Color(0.0, 1.0, 0.0, 1.0); // green
if (aFlags & DIAGNOSTIC_COMPONENT_ALPHA) {
color = gfx::Color(0.0, 1.0, 1.0, 1.0); // greenish blue
}
} else if (aFlags & DIAGNOSTIC_IMAGE) {
color = gfx::Color(0.5, 0.0, 0.0, 1.0); // red
} else if (aFlags & DIAGNOSTIC_COLOR) {
color = gfx::Color(0.0, 0.0, 1.0, 1.0); // blue
} else if (aFlags & DIAGNOSTIC_CONTAINER) {
color = gfx::Color(0.8, 0.0, 0.8, 1.0); // purple
}
// make tile borders a bit more transparent to keep layer borders readable.
if (aFlags & DIAGNOSTIC_TILE || aFlags & DIAGNOSTIC_BIGIMAGE) {
lWidth = 1;
opacity = 0.5;
color.r *= 0.7;
color.g *= 0.7;
color.b *= 0.7;
}
EffectChain effects;
effects.mPrimaryEffect = new EffectSolidColor(color);
// left
this->DrawQuad(gfx::Rect(rect.x, rect.y,
lWidth, rect.height),
aClipRect, effects, opacity,
aTransform, aOffset);
// top
this->DrawQuad(gfx::Rect(rect.x + lWidth, rect.y,
rect.width - 2 * lWidth, lWidth),
aClipRect, effects, opacity,
aTransform, aOffset);
// right
this->DrawQuad(gfx::Rect(rect.x + rect.width - lWidth, rect.y,
lWidth, rect.height),
aClipRect, effects, opacity,
aTransform, aOffset);
// bottom
this->DrawQuad(gfx::Rect(rect.x + lWidth, rect.y + rect.height-lWidth,
rect.width - 2 * lWidth, lWidth),
aClipRect, effects, opacity,
aTransform, aOffset);
}
} // namespace
} // namespace