void PageScaleConstraintsSet::adjustForAndroidWebViewQuirks(const ViewportArguments& arguments, IntSize viewSize, int layoutFallbackWidth, float deviceScaleFactor, bool supportTargetDensityDPI, bool wideViewportQuirkEnabled, bool useWideViewport, bool loadWithOverviewMode)
{
if (!supportTargetDensityDPI && !wideViewportQuirkEnabled && loadWithOverviewMode)
return;
const float oldInitialScale = m_pageDefinedConstraints.initialScale;
if (!loadWithOverviewMode) {
bool resetInitialScale = false;
if (arguments.zoom == -1) {
if (arguments.width == -1)
resetInitialScale = true;
if (useWideViewport || arguments.width == ViewportArguments::ValueDeviceWidth)
resetInitialScale = true;
}
if (resetInitialScale)
m_pageDefinedConstraints.initialScale = 1.0f;
}
float adjustedLayoutSizeWidth = m_pageDefinedConstraints.layoutSize.width();
float adjustedLayoutSizeHeight = m_pageDefinedConstraints.layoutSize.height();
float targetDensityDPIFactor = 1.0f;
if (supportTargetDensityDPI) {
targetDensityDPIFactor = computeDeprecatedTargetDensityDPIFactor(arguments, deviceScaleFactor);
if (m_pageDefinedConstraints.initialScale != -1)
m_pageDefinedConstraints.initialScale *= targetDensityDPIFactor;
m_pageDefinedConstraints.minimumScale *= targetDensityDPIFactor;
m_pageDefinedConstraints.maximumScale *= targetDensityDPIFactor;
if (wideViewportQuirkEnabled && (!useWideViewport || arguments.width <= 0)) {
adjustedLayoutSizeWidth /= targetDensityDPIFactor;
adjustedLayoutSizeHeight /= targetDensityDPIFactor;
}
}
if (wideViewportQuirkEnabled) {
if (useWideViewport && arguments.width == -1 && arguments.zoom != 1.0f) {
adjustedLayoutSizeWidth = layoutFallbackWidth;
adjustedLayoutSizeHeight = computeHeightByAspectRatio(adjustedLayoutSizeWidth, viewSize);
} else if (!useWideViewport) {
const float nonWideScale = arguments.zoom < 1 && arguments.width != ViewportArguments::ValueDeviceWidth ? -1 : oldInitialScale;
adjustedLayoutSizeWidth = getLayoutWidthForNonWideViewport(viewSize, nonWideScale) / targetDensityDPIFactor;
if (m_userAgentConstraints.initialScale != -1 && (arguments.width == ViewportArguments::ValueDeviceWidth || (arguments.width == -1 && arguments.zoom == -1)))
adjustedLayoutSizeWidth /= m_userAgentConstraints.initialScale;
adjustedLayoutSizeHeight = computeHeightByAspectRatio(adjustedLayoutSizeWidth, viewSize);
if (arguments.zoom < 1) {
m_pageDefinedConstraints.initialScale = targetDensityDPIFactor;
m_pageDefinedConstraints.minimumScale = std::min<float>(m_pageDefinedConstraints.minimumScale, m_pageDefinedConstraints.initialScale);
m_pageDefinedConstraints.maximumScale = std::max<float>(m_pageDefinedConstraints.maximumScale, m_pageDefinedConstraints.initialScale);
}
}
}
if (supportTargetDensityDPI && !arguments.userZoom) {
m_pageDefinedConstraints.initialScale = targetDensityDPIFactor;
m_pageDefinedConstraints.minimumScale = m_pageDefinedConstraints.initialScale;
m_pageDefinedConstraints.maximumScale = m_pageDefinedConstraints.initialScale;
if (arguments.width == -1 || arguments.width == ViewportArguments::ValueDeviceWidth) {
adjustedLayoutSizeWidth = viewSize.width() / targetDensityDPIFactor;
adjustedLayoutSizeHeight = computeHeightByAspectRatio(adjustedLayoutSizeWidth, viewSize);
}
}
m_pageDefinedConstraints.layoutSize.setWidth(adjustedLayoutSizeWidth);
m_pageDefinedConstraints.layoutSize.setHeight(adjustedLayoutSizeHeight);
}
void PageScaleConstraintsSet::adjustForAndroidWebViewQuirks(const ViewportDescription& description, int layoutFallbackWidth, float deviceScaleFactor, bool supportTargetDensityDPI, bool wideViewportQuirkEnabled, bool useWideViewport, bool loadWithOverviewMode, bool nonUserScalableQuirkEnabled)
{
if (!supportTargetDensityDPI && !wideViewportQuirkEnabled && loadWithOverviewMode && !nonUserScalableQuirkEnabled)
return;
const float oldInitialScale = m_pageDefinedConstraints.initialScale;
if (!loadWithOverviewMode) {
bool resetInitialScale = false;
if (description.zoom == -1) {
if (description.maxWidth.isAuto() || description.maxWidth.type() == ExtendToZoom)
resetInitialScale = true;
if (useWideViewport || description.maxWidth.type() == DeviceWidth)
resetInitialScale = true;
}
if (resetInitialScale)
m_pageDefinedConstraints.initialScale = 1.0f;
}
float adjustedLayoutSizeWidth = m_pageDefinedConstraints.layoutSize.width();
float adjustedLayoutSizeHeight = m_pageDefinedConstraints.layoutSize.height();
float targetDensityDPIFactor = 1.0f;
if (supportTargetDensityDPI) {
targetDensityDPIFactor = computeDeprecatedTargetDensityDPIFactor(description, deviceScaleFactor);
if (m_pageDefinedConstraints.initialScale != -1)
m_pageDefinedConstraints.initialScale *= targetDensityDPIFactor;
if (m_pageDefinedConstraints.minimumScale != -1)
m_pageDefinedConstraints.minimumScale *= targetDensityDPIFactor;
if (m_pageDefinedConstraints.maximumScale != -1)
m_pageDefinedConstraints.maximumScale *= targetDensityDPIFactor;
if (wideViewportQuirkEnabled && (!useWideViewport || description.maxWidth.type() == DeviceWidth)) {
adjustedLayoutSizeWidth /= targetDensityDPIFactor;
adjustedLayoutSizeHeight /= targetDensityDPIFactor;
}
}
if (wideViewportQuirkEnabled) {
if (useWideViewport && (description.maxWidth.isAuto() || description.maxWidth.type() == ExtendToZoom) && description.zoom != 1.0f) {
adjustedLayoutSizeWidth = layoutFallbackWidth;
adjustedLayoutSizeHeight = computeHeightByAspectRatio(adjustedLayoutSizeWidth, m_viewSize);
} else if (!useWideViewport) {
const float nonWideScale = description.zoom < 1 && description.maxWidth.type() != DeviceWidth && description.maxWidth.type() != DeviceHeight ? -1 : oldInitialScale;
adjustedLayoutSizeWidth = getLayoutWidthForNonWideViewport(m_viewSize, nonWideScale) / targetDensityDPIFactor;
float newInitialScale = targetDensityDPIFactor;
if (m_userAgentConstraints.initialScale != -1 && (description.maxWidth.type() == DeviceWidth || ((description.maxWidth.isAuto() || description.maxWidth.type() == ExtendToZoom) && description.zoom == -1))) {
adjustedLayoutSizeWidth /= m_userAgentConstraints.initialScale;
newInitialScale = m_userAgentConstraints.initialScale;
}
adjustedLayoutSizeHeight = computeHeightByAspectRatio(adjustedLayoutSizeWidth, m_viewSize);
if (description.zoom < 1) {
m_pageDefinedConstraints.initialScale = newInitialScale;
if (m_pageDefinedConstraints.minimumScale != -1)
m_pageDefinedConstraints.minimumScale = std::min<float>(m_pageDefinedConstraints.minimumScale, m_pageDefinedConstraints.initialScale);
if (m_pageDefinedConstraints.maximumScale != -1)
m_pageDefinedConstraints.maximumScale = std::max<float>(m_pageDefinedConstraints.maximumScale, m_pageDefinedConstraints.initialScale);
}
}
}
if (nonUserScalableQuirkEnabled && !description.userZoom) {
m_pageDefinedConstraints.initialScale = targetDensityDPIFactor;
m_pageDefinedConstraints.minimumScale = m_pageDefinedConstraints.initialScale;
m_pageDefinedConstraints.maximumScale = m_pageDefinedConstraints.initialScale;
if (description.maxWidth.isAuto() || description.maxWidth.type() == ExtendToZoom || description.maxWidth.type() == DeviceWidth) {
adjustedLayoutSizeWidth = m_viewSize.width() / targetDensityDPIFactor;
adjustedLayoutSizeHeight = computeHeightByAspectRatio(adjustedLayoutSizeWidth, m_viewSize);
}
}
m_pageDefinedConstraints.layoutSize.setWidth(adjustedLayoutSizeWidth);
m_pageDefinedConstraints.layoutSize.setHeight(adjustedLayoutSizeHeight);
}
void PageScaleConstraintsSet::adjustForAndroidWebViewQuirks(const ViewportArguments& arguments, IntSize viewSize, int layoutFallbackWidth, float deviceScaleFactor, bool supportTargetDensityDPI, bool wideViewportQuirkEnabled, bool useWideViewport, bool loadWithOverviewMode)
{
if (!supportTargetDensityDPI && !wideViewportQuirkEnabled && loadWithOverviewMode)
return;
const float oldInitialScale = m_pageDefinedConstraints.initialScale;
if (!loadWithOverviewMode) {
bool resetInitialScale = false;
if (arguments.zoom == -1) {
if (arguments.width == -1)
resetInitialScale = true;
if (useWideViewport || arguments.width == ViewportArguments::ValueDeviceWidth)
resetInitialScale = true;
}
if (resetInitialScale)
m_pageDefinedConstraints.initialScale = 1.0f;
}
float adjustedLayoutSizeWidth = m_pageDefinedConstraints.layoutSize.width();
float adjustedLayoutSizeHeight = m_pageDefinedConstraints.layoutSize.height();
float targetDensityDPIFactor = 1.0f;
if (supportTargetDensityDPI) {
targetDensityDPIFactor = computeDeprecatedTargetDensityDPIFactor(arguments, deviceScaleFactor);
if (m_pageDefinedConstraints.initialScale != -1)
m_pageDefinedConstraints.initialScale *= targetDensityDPIFactor;
m_pageDefinedConstraints.minimumScale *= targetDensityDPIFactor;
m_pageDefinedConstraints.maximumScale *= targetDensityDPIFactor;
if (wideViewportQuirkEnabled && (!useWideViewport || arguments.width <= 0)) {
adjustedLayoutSizeWidth /= targetDensityDPIFactor;
adjustedLayoutSizeHeight /= targetDensityDPIFactor;
}
// In the following cases, a bug in the Classic WebView would mean that the viewport meta tag would take
// precedence over the app specified setInitialScale value. We keep bugward compatibility with the old
// WebView for legacy apps (the supportTargetDensityDPI case). New apps will see that setInitialScale()
// overrides what is specified in the viewport tag.
if (arguments.width == ViewportArguments::ValueAuto && m_pageDefinedConstraints.initialScale == 1.0f) {
m_userAgentConstraints.initialScale = -1;
} else if (arguments.width == ViewportArguments::ValueDeviceWidth || arguments.width == 320) {
m_userAgentConstraints.initialScale = -1;
}
}
if (wideViewportQuirkEnabled) {
if (useWideViewport && arguments.width == -1 && arguments.zoom != 1.0f) {
adjustedLayoutSizeWidth = layoutFallbackWidth;
adjustedLayoutSizeHeight = computeHeightByAspectRatio(adjustedLayoutSizeWidth, viewSize);
} else if (!useWideViewport) {
const float nonWideScale = arguments.zoom < 1 && arguments.width != ViewportArguments::ValueDeviceWidth ? -1 : oldInitialScale;
adjustedLayoutSizeWidth = getLayoutWidthForNonWideViewport(viewSize, nonWideScale) / targetDensityDPIFactor;
adjustedLayoutSizeHeight = computeHeightByAspectRatio(adjustedLayoutSizeWidth, viewSize);
if (arguments.zoom < 1) {
m_pageDefinedConstraints.initialScale = targetDensityDPIFactor;
m_pageDefinedConstraints.minimumScale = std::min<float>(m_pageDefinedConstraints.minimumScale, m_pageDefinedConstraints.initialScale);
m_pageDefinedConstraints.maximumScale = std::max<float>(m_pageDefinedConstraints.maximumScale, m_pageDefinedConstraints.initialScale);
}
}
}
m_pageDefinedConstraints.layoutSize.setWidth(adjustedLayoutSizeWidth);
m_pageDefinedConstraints.layoutSize.setHeight(adjustedLayoutSizeHeight);
}
