ViewportConfiguration.h [plain text]
#ifndef ViewportConfiguration_h
#define ViewportConfiguration_h
#include "FloatSize.h"
#include "IntSize.h"
#include "ViewportArguments.h"
#include <wtf/Noncopyable.h>
namespace WebCore {
class ViewportConfiguration {
WTF_MAKE_NONCOPYABLE(ViewportConfiguration); WTF_MAKE_FAST_ALLOCATED;
public:
struct Parameters {
Parameters()
: width(0)
, height(0)
, initialScale(0)
, minimumScale(0)
, maximumScale(0)
, allowsUserScaling(false)
, allowsShrinkToFit(false)
, widthIsSet(false)
, heightIsSet(false)
, initialScaleIsSet(false)
{
}
double width;
double height;
double initialScale;
double minimumScale;
double maximumScale;
bool allowsUserScaling;
bool allowsShrinkToFit;
bool widthIsSet;
bool heightIsSet;
bool initialScaleIsSet;
};
WEBCORE_EXPORT ViewportConfiguration();
const Parameters& defaultConfiguration() const { return m_defaultConfiguration; }
WEBCORE_EXPORT void setDefaultConfiguration(const Parameters&);
const IntSize& contentsSize() const { return m_contentSize; }
WEBCORE_EXPORT void setContentsSize(const IntSize&);
const FloatSize& minimumLayoutSize() const { return m_minimumLayoutSize; }
WEBCORE_EXPORT void setMinimumLayoutSize(const FloatSize&);
const ViewportArguments& viewportArguments() const { return m_viewportArguments; }
WEBCORE_EXPORT void setViewportArguments(const ViewportArguments&);
void setCanIgnoreScalingConstraints(bool canIgnoreScalingConstraints) { m_canIgnoreScalingConstraints = canIgnoreScalingConstraints; }
void setForceAlwaysUserScalable(bool forceAlwaysUserScalable) { m_forceAlwaysUserScalable = forceAlwaysUserScalable; }
WEBCORE_EXPORT IntSize layoutSize() const;
WEBCORE_EXPORT double initialScale() const;
WEBCORE_EXPORT double initialScaleIgnoringContentSize() const;
WEBCORE_EXPORT double minimumScale() const;
double maximumScale() const { return m_configuration.maximumScale; }
WEBCORE_EXPORT bool allowsUserScaling() const;
bool allowsShrinkToFit() const;
WEBCORE_EXPORT static Parameters webpageParameters();
WEBCORE_EXPORT static Parameters textDocumentParameters();
WEBCORE_EXPORT static Parameters imageDocumentParameters();
WEBCORE_EXPORT static Parameters xhtmlMobileParameters();
WEBCORE_EXPORT static Parameters testingParameters();
#ifndef NDEBUG
WTF::CString description() const;
void dump() const;
#endif
private:
void updateConfiguration();
double viewportArgumentsLength(double length) const;
double initialScaleFromSize(double width, double height, bool shouldIgnoreScalingConstraints) const;
int layoutWidth() const;
int layoutHeight() const;
bool shouldIgnoreScalingConstraints() const;
bool shouldIgnoreVerticalScalingConstraints() const;
bool shouldIgnoreHorizontalScalingConstraints() const;
Parameters m_configuration;
Parameters m_defaultConfiguration;
IntSize m_contentSize;
FloatSize m_minimumLayoutSize;
ViewportArguments m_viewportArguments;
bool m_canIgnoreScalingConstraints;
bool m_forceAlwaysUserScalable;
};
}
#endif // ViewportConfiguration_h