CanvasRenderingContext2D.h [plain text]
#pragma once
#include "CanvasRenderingContext2DBase.h"
#include "CanvasTextAlign.h"
#include "CanvasTextBaseline.h"
#include "FontCascade.h"
#include "FontSelectorClient.h"
#include "HTMLCanvasElement.h"
#include <memory>
namespace WebCore {
class TextMetrics;
class CanvasRenderingContext2D final : public CanvasRenderingContext2DBase {
public:
static std::unique_ptr<CanvasRenderingContext2D> create(CanvasBase&, bool usesCSSCompatibilityParseMode, bool usesDashboardCompatibilityMode);
virtual ~CanvasRenderingContext2D();
HTMLCanvasElement& canvas() const { return downcast<HTMLCanvasElement>(canvasBase()); }
void drawFocusIfNeeded(Element&);
void drawFocusIfNeeded(Path2D&, Element&);
float webkitBackingStorePixelRatio() const { return 1; }
String font() const;
void setFont(const String&);
CanvasTextAlign textAlign() const;
void setTextAlign(CanvasTextAlign);
CanvasTextBaseline textBaseline() const;
void setTextBaseline(CanvasTextBaseline);
CanvasDirection direction() const;
void setDirection(CanvasDirection);
void fillText(const String& text, float x, float y, std::optional<float> maxWidth = std::nullopt);
void strokeText(const String& text, float x, float y, std::optional<float> maxWidth = std::nullopt);
Ref<TextMetrics> measureText(const String& text);
bool is2d() const override { return true; }
private:
CanvasRenderingContext2D(CanvasBase&, bool usesCSSCompatibilityParseMode, bool usesDashboardCompatibilityMode);
const FontProxy& fontProxy();
void drawTextInternal(const String& text, float x, float y, bool fill, std::optional<float> maxWidth = std::nullopt);
void drawFocusIfNeededInternal(const Path&, Element&);
void prepareGradientForDashboard(CanvasGradient& gradient) const;
TextDirection toTextDirection(CanvasRenderingContext2DBase::Direction, const RenderStyle** computedStyle = nullptr) const;
FloatPoint textOffset(float width, TextDirection);
};
}
SPECIALIZE_TYPE_TRAITS_CANVASRENDERINGCONTEXT(WebCore::CanvasRenderingContext2D, is2d())