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#ifndef SkRecords_DEFINED
#define SkRecords_DEFINED
#include "SkCanvas.h"
namespace SkRecords {
// A list of all the types of canvas calls we can record.
// Each of these is reified into a struct below.
//
// (We're using the macro-of-macro trick here to do several different things with the same list.)
//
// We leave this SK_RECORD_TYPES macro defined for use by code that wants to operate on SkRecords
// types polymorphically. (See SkRecord::Record::{visit,mutate} for an example.)
#define SK_RECORD_TYPES(M) \
M(Restore) \
M(Save) \
M(SaveLayer) \
M(Concat) \
M(SetMatrix) \
M(ClipPath) \
M(ClipRRect) \
M(ClipRect) \
M(ClipRegion) \
M(Clear) \
M(DrawBitmap) \
M(DrawBitmapMatrix) \
M(DrawBitmapNine) \
M(DrawBitmapRectToRect) \
M(DrawDRRect) \
M(DrawOval) \
M(DrawPaint) \
M(DrawPath) \
M(DrawPoints) \
M(DrawPosText) \
M(DrawPosTextH) \
M(DrawRRect) \
M(DrawRect) \
M(DrawSprite) \
M(DrawText) \
M(DrawTextOnPath) \
M(DrawVertices)
// Defines SkRecords::Type, an enum of all record types.
#define ENUM(T) T##_Type,
enum Type { SK_RECORD_TYPES(ENUM) };
#undef ENUM
// Macros to make it easier to define a record for a draw call with 0 args, 1 args, 2 args, etc.
// These should be clearer when you look at their use below.
#define RECORD0(T) \
struct T { \
static const Type kType = T##_Type; \
T() {} \
};
// We try to be flexible about the types the constructors take. Instead of requring the exact type
// A here, we take any type Z which implicitly casts to A. This allows the delay_copy() trick to
// work, allowing the caller to decide whether to pass by value or by const&.
#define RECORD1(T, A, a) \
struct T { \
static const Type kType = T##_Type; \
template <typename Z> \
T(Z a) : a(a) {} \
A a; \
};
#define RECORD2(T, A, a, B, b) \
struct T { \
static const Type kType = T##_Type; \
template <typename Z, typename Y> \
T(Z a, Y b) : a(a), b(b) {} \
A a; B b; \
};
#define RECORD3(T, A, a, B, b, C, c) \
struct T { \
static const Type kType = T##_Type; \
template <typename Z, typename Y, typename X> \
T(Z a, Y b, X c) : a(a), b(b), c(c) {} \
A a; B b; C c; \
};
#define RECORD4(T, A, a, B, b, C, c, D, d) \
struct T { \
static const Type kType = T##_Type; \
template <typename Z, typename Y, typename X, typename W> \
T(Z a, Y b, X c, W d) : a(a), b(b), c(c), d(d) {} \
A a; B b; C c; D d; \
};
#define RECORD5(T, A, a, B, b, C, c, D, d, E, e) \
struct T { \
static const Type kType = T##_Type; \
template <typename Z, typename Y, typename X, typename W, typename V> \
T(Z a, Y b, X c, W d, V e) : a(a), b(b), c(c), d(d), e(e) {} \
A a; B b; C c; D d; E e; \
};
// Like SkBitmap, but deep copies pixels if they're not immutable.
// Using this, we guarantee the immutability of all bitmaps we record.
class ImmutableBitmap {
public:
explicit ImmutableBitmap(const SkBitmap& bitmap) {
if (bitmap.isImmutable()) {
fBitmap = bitmap;
} else {
bitmap.copyTo(&fBitmap);
}
fBitmap.setImmutable();
}
operator const SkBitmap& () const { return fBitmap; }
private:
SkBitmap fBitmap;
};
// Pointers here represent either an optional value or an array if accompanied by a count.
// None of these records manages the lifetimes of pointers, except for DrawVertices handling its
// Xfermode specially.
RECORD0(Restore);
RECORD1(Save, SkCanvas::SaveFlags, flags);
RECORD3(SaveLayer, SkRect*, bounds, SkPaint*, paint, SkCanvas::SaveFlags, flags);
RECORD1(Concat, SkMatrix, matrix);
RECORD1(SetMatrix, SkMatrix, matrix);
RECORD3(ClipPath, SkPath, path, SkRegion::Op, op, bool, doAA);
RECORD3(ClipRRect, SkRRect, rrect, SkRegion::Op, op, bool, doAA);
RECORD3(ClipRect, SkRect, rect, SkRegion::Op, op, bool, doAA);
RECORD2(ClipRegion, SkRegion, region, SkRegion::Op, op);
RECORD1(Clear, SkColor, color);
RECORD4(DrawBitmap, ImmutableBitmap, bitmap, SkScalar, left, SkScalar, top, SkPaint*, paint);
RECORD3(DrawBitmapMatrix, ImmutableBitmap, bitmap, SkMatrix, matrix, SkPaint*, paint);
RECORD4(DrawBitmapNine, ImmutableBitmap, bitmap, SkIRect, center, SkRect, dst, SkPaint*, paint);
RECORD5(DrawBitmapRectToRect, ImmutableBitmap, bitmap,
SkRect*, src,
SkRect, dst,
SkPaint*, paint,
SkCanvas::DrawBitmapRectFlags, flags);
RECORD3(DrawDRRect, SkRRect, outer, SkRRect, inner, SkPaint, paint);
RECORD2(DrawOval, SkRect, oval, SkPaint, paint);
RECORD1(DrawPaint, SkPaint, paint);
RECORD2(DrawPath, SkPath, path, SkPaint, paint);
RECORD4(DrawPoints, SkCanvas::PointMode, mode, size_t, count, SkPoint*, pts, SkPaint, paint);
RECORD4(DrawPosText, char*, text, size_t, byteLength, SkPoint*, pos, SkPaint, paint);
RECORD5(DrawPosTextH, char*, text,
size_t, byteLength,
SkScalar*, xpos,
SkScalar, y,
SkPaint, paint);
RECORD2(DrawRRect, SkRRect, rrect, SkPaint, paint);
RECORD2(DrawRect, SkRect, rect, SkPaint, paint);
RECORD4(DrawSprite, ImmutableBitmap, bitmap, int, left, int, top, SkPaint*, paint);
RECORD5(DrawText, char*, text, size_t, byteLength, SkScalar, x, SkScalar, y, SkPaint, paint);
RECORD5(DrawTextOnPath, char*, text,
size_t, byteLength,
SkPath, path,
SkMatrix*, matrix,
SkPaint, paint);
// This guy is so ugly we just write it manually.
struct DrawVertices {
static const Type kType = DrawVertices_Type;
DrawVertices(SkCanvas::VertexMode vmode,
int vertexCount,
SkPoint* vertices,
SkPoint* texs,
SkColor* colors,
SkXfermode* xmode,
uint16_t* indices,
int indexCount,
const SkPaint& paint)
: vmode(vmode)
, vertexCount(vertexCount)
, vertices(vertices)
, texs(texs)
, colors(colors)
, xmode(SkSafeRef(xmode))
, indices(indices)
, indexCount(indexCount)
, paint(paint) {}
SkCanvas::VertexMode vmode;
int vertexCount;
SkPoint* vertices;
SkPoint* texs;
SkColor* colors;
SkAutoTUnref<SkXfermode> xmode;
uint16_t* indices;
int indexCount;
SkPaint paint;
};
#undef RECORD0
#undef RECORD1
#undef RECORD2
#undef RECORD3
#undef RECORD4
#undef RECORD5
} // namespace SkRecords
#endif//SkRecords_DEFINED
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