TextSizeAdjustment.h [plain text]
#pragma once
#if ENABLE(TEXT_AUTOSIZING)
#include <wtf/OptionSet.h>
namespace WebCore {
class RenderStyle;
enum TextSizeAdjustmentType { AutoTextSizeAdjustment = -1, NoTextSizeAdjustment = -2 };
class TextSizeAdjustment {
public:
TextSizeAdjustment() : m_value(AutoTextSizeAdjustment) { }
TextSizeAdjustment(float value) : m_value(value) { }
float percentage() const { return m_value; }
float multiplier() const { return m_value / 100; }
bool isAuto() const { return m_value == AutoTextSizeAdjustment; }
bool isNone() const { return m_value == NoTextSizeAdjustment; }
bool isPercentage() const { return m_value >= 0; }
bool operator==(const TextSizeAdjustment& anAdjustment) const { return m_value == anAdjustment.m_value; }
bool operator!=(const TextSizeAdjustment& anAdjustment) const { return m_value != anAdjustment.m_value; }
private:
float m_value;
};
class AutosizeStatus {
public:
enum class Fields : uint8_t {
AvoidSubtree = 1 << 0,
FixedHeight = 1 << 1,
FixedWidth = 1 << 2,
Floating = 1 << 3,
OverflowXHidden = 1 << 4,
};
AutosizeStatus(OptionSet<Fields>);
OptionSet<Fields> fields() const { return m_fields; }
bool contains(Fields) const;
static float idempotentTextSize(float specifiedSize, float pageScale);
static void updateStatus(RenderStyle&);
static bool probablyContainsASmallFixedNumberOfLines(const RenderStyle&);
private:
OptionSet<Fields> m_fields;
};
}
#endif // ENABLE(TEXT_AUTOSIZING)