1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/layers/Compositor.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,213 @@
1.4 +/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
1.5 + * This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "mozilla/layers/Compositor.h"
1.10 +#include "base/message_loop.h" // for MessageLoop
1.11 +#include "mozilla/layers/CompositorParent.h" // for CompositorParent
1.12 +#include "mozilla/layers/Effects.h" // for Effect, EffectChain, etc
1.13 +#include "mozilla/mozalloc.h" // for operator delete, etc
1.14 +#include "gfx2DGlue.h"
1.15 +
1.16 +namespace mozilla {
1.17 +namespace gfx {
1.18 +class Matrix4x4;
1.19 +}
1.20 +
1.21 +namespace layers {
1.22 +
1.23 +/* static */ LayersBackend Compositor::sBackend = LayersBackend::LAYERS_NONE;
1.24 +/* static */ LayersBackend
1.25 +Compositor::GetBackend()
1.26 +{
1.27 + AssertOnCompositorThread();
1.28 + return sBackend;
1.29 +}
1.30 +
1.31 +/* static */ void
1.32 +Compositor::SetBackend(LayersBackend backend)
1.33 +{
1.34 + if (sBackend != LayersBackend::LAYERS_NONE && sBackend != backend) {
1.35 + // Assert this once we figure out bug 972891.
1.36 + //MOZ_CRASH("Trying to use more than one OMTC compositor.");
1.37 +
1.38 +#ifdef XP_MACOSX
1.39 + printf("ERROR: Changing compositor from %u to %u.\n",
1.40 + unsigned(sBackend), unsigned(backend));
1.41 +#endif
1.42 + }
1.43 + sBackend = backend;
1.44 +}
1.45 +
1.46 +/* static */ void
1.47 +Compositor::AssertOnCompositorThread()
1.48 +{
1.49 + MOZ_ASSERT(CompositorParent::CompositorLoop() ==
1.50 + MessageLoop::current(),
1.51 + "Can only call this from the compositor thread!");
1.52 +}
1.53 +
1.54 +bool
1.55 +Compositor::ShouldDrawDiagnostics(DiagnosticFlags aFlags)
1.56 +{
1.57 + if ((aFlags & DIAGNOSTIC_TILE) && !(mDiagnosticTypes & DIAGNOSTIC_TILE_BORDERS)) {
1.58 + return false;
1.59 + }
1.60 + if ((aFlags & DIAGNOSTIC_BIGIMAGE) &&
1.61 + !(mDiagnosticTypes & DIAGNOSTIC_BIGIMAGE_BORDERS)) {
1.62 + return false;
1.63 + }
1.64 + if (!mDiagnosticTypes) {
1.65 + return false;
1.66 + }
1.67 + return true;
1.68 +}
1.69 +
1.70 +void
1.71 +Compositor::DrawDiagnostics(DiagnosticFlags aFlags,
1.72 + const nsIntRegion& aVisibleRegion,
1.73 + const gfx::Rect& aClipRect,
1.74 + const gfx::Matrix4x4& aTransform,
1.75 + uint32_t aFlashCounter)
1.76 +{
1.77 + if (!ShouldDrawDiagnostics(aFlags)) {
1.78 + return;
1.79 + }
1.80 +
1.81 + if (aVisibleRegion.GetNumRects() > 1) {
1.82 + nsIntRegionRectIterator screenIter(aVisibleRegion);
1.83 +
1.84 + while (const nsIntRect* rect = screenIter.Next())
1.85 + {
1.86 + DrawDiagnostics(aFlags | DIAGNOSTIC_REGION_RECT,
1.87 + ToRect(*rect), aClipRect, aTransform, aFlashCounter);
1.88 + }
1.89 + }
1.90 +
1.91 + DrawDiagnostics(aFlags, ToRect(aVisibleRegion.GetBounds()),
1.92 + aClipRect, aTransform, aFlashCounter);
1.93 +}
1.94 +
1.95 +void
1.96 +Compositor::DrawDiagnostics(DiagnosticFlags aFlags,
1.97 + const gfx::Rect& aVisibleRect,
1.98 + const gfx::Rect& aClipRect,
1.99 + const gfx::Matrix4x4& aTransform,
1.100 + uint32_t aFlashCounter)
1.101 +{
1.102 + if (!ShouldDrawDiagnostics(aFlags)) {
1.103 + return;
1.104 + }
1.105 +
1.106 + DrawDiagnosticsInternal(aFlags, aVisibleRect, aClipRect, aTransform,
1.107 + aFlashCounter);
1.108 +}
1.109 +
1.110 +gfx::Rect
1.111 +Compositor::ClipRectInLayersCoordinates(gfx::Rect aClip) const {
1.112 + gfx::Rect result;
1.113 + aClip = aClip + GetCurrentRenderTarget()->GetOrigin();
1.114 + gfx::IntSize destSize = GetWidgetSize();
1.115 +
1.116 + switch (mScreenRotation) {
1.117 + case ROTATION_0:
1.118 + result = aClip;
1.119 + break;
1.120 + case ROTATION_90:
1.121 + result = gfx::Rect(aClip.y,
1.122 + destSize.width - aClip.x - aClip.width,
1.123 + aClip.height, aClip.width);
1.124 + break;
1.125 + case ROTATION_270:
1.126 + result = gfx::Rect(destSize.height - aClip.y - aClip.height,
1.127 + aClip.x,
1.128 + aClip.height, aClip.width);
1.129 + break;
1.130 + case ROTATION_180:
1.131 + result = gfx::Rect(destSize.width - aClip.x - aClip.width,
1.132 + destSize.height - aClip.y - aClip.height,
1.133 + aClip.width, aClip.height);
1.134 + break;
1.135 + // ScreenRotation has a sentinel value, need to catch it in the switch
1.136 + // statement otherwise the build fails (-WError)
1.137 + default: {}
1.138 + }
1.139 + return result;
1.140 +}
1.141 +
1.142 +void
1.143 +Compositor::DrawDiagnosticsInternal(DiagnosticFlags aFlags,
1.144 + const gfx::Rect& aVisibleRect,
1.145 + const gfx::Rect& aClipRect,
1.146 + const gfx::Matrix4x4& aTransform,
1.147 + uint32_t aFlashCounter)
1.148 +{
1.149 +#ifdef MOZ_B2G
1.150 + int lWidth = 4;
1.151 +#elif defined(ANDROID)
1.152 + int lWidth = 10;
1.153 +#else
1.154 + int lWidth = 2;
1.155 +#endif
1.156 + float opacity = 0.7f;
1.157 +
1.158 + gfx::Color color;
1.159 + if (aFlags & DIAGNOSTIC_CONTENT) {
1.160 + color = gfx::Color(0.0f, 1.0f, 0.0f, 1.0f); // green
1.161 + if (aFlags & DIAGNOSTIC_COMPONENT_ALPHA) {
1.162 + color = gfx::Color(0.0f, 1.0f, 1.0f, 1.0f); // greenish blue
1.163 + }
1.164 + } else if (aFlags & DIAGNOSTIC_IMAGE) {
1.165 + color = gfx::Color(1.0f, 0.0f, 0.0f, 1.0f); // red
1.166 + } else if (aFlags & DIAGNOSTIC_COLOR) {
1.167 + color = gfx::Color(0.0f, 0.0f, 1.0f, 1.0f); // blue
1.168 + } else if (aFlags & DIAGNOSTIC_CONTAINER) {
1.169 + color = gfx::Color(0.8f, 0.0f, 0.8f, 1.0f); // purple
1.170 + }
1.171 +
1.172 + // make tile borders a bit more transparent to keep layer borders readable.
1.173 + if (aFlags & DIAGNOSTIC_TILE ||
1.174 + aFlags & DIAGNOSTIC_BIGIMAGE ||
1.175 + aFlags & DIAGNOSTIC_REGION_RECT) {
1.176 + lWidth = 1;
1.177 + opacity = 0.5f;
1.178 + color.r *= 0.7f;
1.179 + color.g *= 0.7f;
1.180 + color.b *= 0.7f;
1.181 + }
1.182 +
1.183 + if (mDiagnosticTypes & DIAGNOSTIC_FLASH_BORDERS) {
1.184 + float flash = (float)aFlashCounter / (float)DIAGNOSTIC_FLASH_COUNTER_MAX;
1.185 + color.r *= flash;
1.186 + color.g *= flash;
1.187 + color.b *= flash;
1.188 + }
1.189 +
1.190 + EffectChain effects;
1.191 +
1.192 + effects.mPrimaryEffect = new EffectSolidColor(color);
1.193 + // left
1.194 + this->DrawQuad(gfx::Rect(aVisibleRect.x, aVisibleRect.y,
1.195 + lWidth, aVisibleRect.height),
1.196 + aClipRect, effects, opacity,
1.197 + aTransform);
1.198 + // top
1.199 + this->DrawQuad(gfx::Rect(aVisibleRect.x + lWidth, aVisibleRect.y,
1.200 + aVisibleRect.width - 2 * lWidth, lWidth),
1.201 + aClipRect, effects, opacity,
1.202 + aTransform);
1.203 + // right
1.204 + this->DrawQuad(gfx::Rect(aVisibleRect.x + aVisibleRect.width - lWidth, aVisibleRect.y,
1.205 + lWidth, aVisibleRect.height),
1.206 + aClipRect, effects, opacity,
1.207 + aTransform);
1.208 + // bottom
1.209 + this->DrawQuad(gfx::Rect(aVisibleRect.x + lWidth, aVisibleRect.y + aVisibleRect.height-lWidth,
1.210 + aVisibleRect.width - 2 * lWidth, lWidth),
1.211 + aClipRect, effects, opacity,
1.212 + aTransform);
1.213 +}
1.214 +
1.215 +} // namespace
1.216 +} // namespace
