blob: 884411433ad353b34c5bb803251712aa9dc07d8d [file] [log] [blame]
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "core/css/MediaValues.h"
#include "core/css/CSSResolutionUnits.h"
#include "core/css/MediaValuesCached.h"
#include "core/css/MediaValuesDynamic.h"
#include "core/dom/Document.h"
#include "core/dom/Element.h"
#include "core/frame/LocalFrame.h"
#include "core/frame/LocalFrameView.h"
#include "core/frame/Settings.h"
#include "core/layout/LayoutObject.h"
#include "core/layout/LayoutView.h"
#include "core/page/ChromeClient.h"
#include "core/page/Page.h"
#include "core/paint/compositing/PaintLayerCompositor.h"
#include "platform/graphics/ColorSpaceGamut.h"
#include "public/platform/WebScreenInfo.h"
namespace blink {
MediaValues* MediaValues::CreateDynamicIfFrameExists(LocalFrame* frame) {
if (frame)
return MediaValuesDynamic::Create(frame);
return MediaValuesCached::Create();
}
double MediaValues::CalculateViewportWidth(LocalFrame* frame) {
DCHECK(frame);
DCHECK(frame->View());
DCHECK(frame->GetDocument());
return frame->View()->ViewportSizeForMediaQueries().Width();
}
double MediaValues::CalculateViewportHeight(LocalFrame* frame) {
DCHECK(frame);
DCHECK(frame->View());
DCHECK(frame->GetDocument());
return frame->View()->ViewportSizeForMediaQueries().Height();
}
int MediaValues::CalculateDeviceWidth(LocalFrame* frame) {
DCHECK(frame && frame->View() && frame->GetSettings() && frame->GetPage());
blink::WebScreenInfo screen_info =
frame->GetPage()->GetChromeClient().GetScreenInfo();
int device_width = screen_info.rect.width;
if (frame->GetSettings()->GetReportScreenSizeInPhysicalPixelsQuirk())
device_width = lroundf(device_width * screen_info.device_scale_factor);
return device_width;
}
int MediaValues::CalculateDeviceHeight(LocalFrame* frame) {
DCHECK(frame && frame->View() && frame->GetSettings() && frame->GetPage());
blink::WebScreenInfo screen_info =
frame->GetPage()->GetChromeClient().GetScreenInfo();
int device_height = screen_info.rect.height;
if (frame->GetSettings()->GetReportScreenSizeInPhysicalPixelsQuirk())
device_height = lroundf(device_height * screen_info.device_scale_factor);
return device_height;
}
bool MediaValues::CalculateStrictMode(LocalFrame* frame) {
DCHECK(frame);
DCHECK(frame->GetDocument());
return !frame->GetDocument()->InQuirksMode();
}
float MediaValues::CalculateDevicePixelRatio(LocalFrame* frame) {
return frame->DevicePixelRatio();
}
int MediaValues::CalculateColorBitsPerComponent(LocalFrame* frame) {
DCHECK(frame);
DCHECK(frame->GetPage());
DCHECK(frame->GetPage()->MainFrame());
if (!frame->GetPage()->MainFrame()->IsLocalFrame() ||
frame->GetPage()->GetChromeClient().GetScreenInfo().is_monochrome)
return 0;
return frame->GetPage()
->GetChromeClient()
.GetScreenInfo()
.depth_per_component;
}
int MediaValues::CalculateMonochromeBitsPerComponent(LocalFrame* frame) {
DCHECK(frame);
DCHECK(frame->GetPage());
DCHECK(frame->GetPage()->MainFrame());
if (!frame->GetPage()->MainFrame()->IsLocalFrame() ||
!frame->GetPage()->GetChromeClient().GetScreenInfo().is_monochrome)
return 0;
return frame->GetPage()
->GetChromeClient()
.GetScreenInfo()
.depth_per_component;
}
int MediaValues::CalculateDefaultFontSize(LocalFrame* frame) {
return frame->GetPage()->GetSettings().GetDefaultFontSize();
}
const String MediaValues::CalculateMediaType(LocalFrame* frame) {
DCHECK(frame);
if (!frame->View())
return g_empty_atom;
return frame->View()->MediaType();
}
WebDisplayMode MediaValues::CalculateDisplayMode(LocalFrame* frame) {
DCHECK(frame);
WebDisplayMode mode =
frame->GetPage()->GetSettings().GetDisplayModeOverride();
if (mode != kWebDisplayModeUndefined)
return mode;
if (!frame->View())
return kWebDisplayModeBrowser;
return frame->View()->DisplayMode();
}
bool MediaValues::CalculateThreeDEnabled(LocalFrame* frame) {
DCHECK(frame);
DCHECK(frame->ContentLayoutObject());
DCHECK(frame->ContentLayoutObject()->Compositor());
bool three_d_enabled = false;
if (LayoutView* view = frame->ContentLayoutObject())
three_d_enabled = view->Compositor()->HasAcceleratedCompositing();
return three_d_enabled;
}
PointerType MediaValues::CalculatePrimaryPointerType(LocalFrame* frame) {
DCHECK(frame);
DCHECK(frame->GetSettings());
return frame->GetSettings()->GetPrimaryPointerType();
}
int MediaValues::CalculateAvailablePointerTypes(LocalFrame* frame) {
DCHECK(frame);
DCHECK(frame->GetSettings());
return frame->GetSettings()->GetAvailablePointerTypes();
}
HoverType MediaValues::CalculatePrimaryHoverType(LocalFrame* frame) {
DCHECK(frame);
DCHECK(frame->GetSettings());
return frame->GetSettings()->GetPrimaryHoverType();
}
int MediaValues::CalculateAvailableHoverTypes(LocalFrame* frame) {
DCHECK(frame);
DCHECK(frame->GetSettings());
return frame->GetSettings()->GetAvailableHoverTypes();
}
DisplayShape MediaValues::CalculateDisplayShape(LocalFrame* frame) {
DCHECK(frame);
DCHECK(frame->GetPage());
return frame->GetPage()->GetChromeClient().GetScreenInfo().display_shape;
}
ColorSpaceGamut MediaValues::CalculateColorGamut(LocalFrame* frame) {
DCHECK(frame);
DCHECK(frame->GetPage());
return ColorSpaceUtilities::GetColorSpaceGamut(
frame->GetPage()->GetChromeClient().GetScreenInfo());
}
bool MediaValues::ComputeLengthImpl(double value,
CSSPrimitiveValue::UnitType type,
unsigned default_font_size,
double viewport_width,
double viewport_height,
double& result) {
// The logic in this function is duplicated from
// CSSToLengthConversionData::ZoomedComputedPixels() because
// MediaValues::ComputeLength() needs nearly identical logic, but we haven't
// found a way to make CSSToLengthConversionData::ZoomedComputedPixels() more
// generic (to solve both cases) without hurting performance.
// FIXME - Unite the logic here with CSSToLengthConversionData in a performant
// way.
switch (type) {
case CSSPrimitiveValue::UnitType::kEms:
case CSSPrimitiveValue::UnitType::kRems:
result = value * default_font_size;
return true;
case CSSPrimitiveValue::UnitType::kPixels:
case CSSPrimitiveValue::UnitType::kUserUnits:
result = value;
return true;
case CSSPrimitiveValue::UnitType::kExs:
// FIXME: We have a bug right now where the zoom will be applied twice to EX
// units.
case CSSPrimitiveValue::UnitType::kChs:
// FIXME: We don't seem to be able to cache fontMetrics related values.
// Trying to access them is triggering some sort of microtask. Serving the
// spec's default instead.
result = (value * default_font_size) / 2.0;
return true;
case CSSPrimitiveValue::UnitType::kViewportWidth:
result = (value * viewport_width) / 100.0;
return true;
case CSSPrimitiveValue::UnitType::kViewportHeight:
result = (value * viewport_height) / 100.0;
return true;
case CSSPrimitiveValue::UnitType::kViewportMin:
result = (value * std::min(viewport_width, viewport_height)) / 100.0;
return true;
case CSSPrimitiveValue::UnitType::kViewportMax:
result = (value * std::max(viewport_width, viewport_height)) / 100.0;
return true;
case CSSPrimitiveValue::UnitType::kCentimeters:
result = value * kCssPixelsPerCentimeter;
return true;
case CSSPrimitiveValue::UnitType::kMillimeters:
result = value * kCssPixelsPerMillimeter;
return true;
case CSSPrimitiveValue::UnitType::kQuarterMillimeters:
result = value * kCssPixelsPerQuarterMillimeter;
return true;
case CSSPrimitiveValue::UnitType::kInches:
result = value * kCssPixelsPerInch;
return true;
case CSSPrimitiveValue::UnitType::kPoints:
result = value * kCssPixelsPerPoint;
return true;
case CSSPrimitiveValue::UnitType::kPicas:
result = value * kCssPixelsPerPica;
return true;
default:
return false;
}
}
} // namespace blink