124 lines
4.4 KiB
C++
124 lines
4.4 KiB
C++
/* libs/graphics/sgl/SkScan.h
|
|
**
|
|
** Copyright 2006, The Android Open Source Project
|
|
**
|
|
** Licensed under the Apache License, Version 2.0 (the "License");
|
|
** you may not use this file except in compliance with the License.
|
|
** You may obtain a copy of the License at
|
|
**
|
|
** http://www.apache.org/licenses/LICENSE-2.0
|
|
**
|
|
** Unless required by applicable law or agreed to in writing, software
|
|
** distributed under the License is distributed on an "AS IS" BASIS,
|
|
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
** See the License for the specific language governing permissions and
|
|
** limitations under the License.
|
|
*/
|
|
|
|
#ifndef SkScan_DEFINED
|
|
#define SkScan_DEFINED
|
|
|
|
#include "SkRect.h"
|
|
|
|
class SkRegion;
|
|
class SkBlitter;
|
|
class SkPath;
|
|
|
|
/** Defines a fixed-point rectangle, identical to the integer SkIRect, but its
|
|
coordinates are treated as SkFixed rather than int32_t.
|
|
*/
|
|
typedef SkIRect SkXRect;
|
|
|
|
class SkScan {
|
|
public:
|
|
static void FillIRect(const SkIRect&, const SkRegion* clip, SkBlitter*);
|
|
static void FillXRect(const SkXRect&, const SkRegion* clip, SkBlitter*);
|
|
|
|
#ifdef SK_SCALAR_IS_FIXED
|
|
static void FillRect(const SkRect& rect, const SkRegion* clip,
|
|
SkBlitter* blitter) {
|
|
SkScan::FillXRect(*(const SkXRect*)&rect, clip, blitter);
|
|
}
|
|
#else
|
|
static void FillRect(const SkRect&, const SkRegion* clip, SkBlitter*);
|
|
#endif
|
|
|
|
static void FillTriangle(const SkPoint pts[], const SkRegion*, SkBlitter*);
|
|
static void FillPath(const SkPath&, const SkRegion& clip, SkBlitter*);
|
|
|
|
static void FillTriangle(const SkPoint& a, const SkPoint& b,
|
|
const SkPoint& c, const SkRegion* clip,
|
|
SkBlitter* blitter) {
|
|
SkPoint pts[3];
|
|
pts[0] = a;
|
|
pts[1] = b;
|
|
pts[2] = c;
|
|
FillTriangle(pts, clip, blitter);
|
|
}
|
|
|
|
static void HairLine(const SkPoint&, const SkPoint&, const SkRegion* clip, SkBlitter*);
|
|
static void HairRect(const SkRect&, const SkRegion* clip, SkBlitter*);
|
|
static void HairPath(const SkPath&, const SkRegion* clip, SkBlitter*);
|
|
|
|
static void FrameRect(const SkRect&, SkScalar width, const SkRegion* clip, SkBlitter*);
|
|
|
|
static void AntiFillXRect(const SkXRect&, const SkRegion* clip, SkBlitter*);
|
|
#ifdef SK_SCALAR_IS_FIXED
|
|
static void AntiFillRect(const SkRect& rect, const SkRegion* clip,
|
|
SkBlitter* blitter) {
|
|
SkScan::AntiFillXRect(*(const SkXRect*)&rect, clip, blitter);
|
|
}
|
|
#else
|
|
static void AntiFillRect(const SkRect&, const SkRegion* clip, SkBlitter*);
|
|
#endif
|
|
|
|
static void AntiFillPath(const SkPath&, const SkRegion& clip, SkBlitter*);
|
|
|
|
static void AntiHairLine(const SkPoint&, const SkPoint&, const SkRegion* clip, SkBlitter*);
|
|
static void AntiHairRect(const SkRect&, const SkRegion* clip, SkBlitter*);
|
|
static void AntiHairPath(const SkPath&, const SkRegion* clip, SkBlitter*);
|
|
};
|
|
|
|
/** Assign an SkXRect from a SkIRect, by promoting the src rect's coordinates
|
|
from int to SkFixed. Does not check for overflow if the src coordinates
|
|
exceed 32K
|
|
*/
|
|
static inline void XRect_set(SkXRect* xr, const SkIRect& src) {
|
|
xr->fLeft = SkIntToFixed(src.fLeft);
|
|
xr->fTop = SkIntToFixed(src.fTop);
|
|
xr->fRight = SkIntToFixed(src.fRight);
|
|
xr->fBottom = SkIntToFixed(src.fBottom);
|
|
}
|
|
|
|
/** Assign an SkXRect from a SkRect, by promoting the src rect's coordinates
|
|
from SkScalar to SkFixed. Does not check for overflow if the src coordinates
|
|
exceed 32K
|
|
*/
|
|
static inline void XRect_set(SkXRect* xr, const SkRect& src) {
|
|
xr->fLeft = SkScalarToFixed(src.fLeft);
|
|
xr->fTop = SkScalarToFixed(src.fTop);
|
|
xr->fRight = SkScalarToFixed(src.fRight);
|
|
xr->fBottom = SkScalarToFixed(src.fBottom);
|
|
}
|
|
|
|
/** Round the SkXRect coordinates, and store the result in the SkIRect.
|
|
*/
|
|
static inline void XRect_round(const SkXRect& xr, SkIRect* dst) {
|
|
dst->fLeft = SkFixedRound(xr.fLeft);
|
|
dst->fTop = SkFixedRound(xr.fTop);
|
|
dst->fRight = SkFixedRound(xr.fRight);
|
|
dst->fBottom = SkFixedRound(xr.fBottom);
|
|
}
|
|
|
|
/** Round the SkXRect coordinates out (i.e. use floor for left/top, and ceiling
|
|
for right/bottom), and store the result in the SkIRect.
|
|
*/
|
|
static inline void XRect_roundOut(const SkXRect& xr, SkIRect* dst) {
|
|
dst->fLeft = SkFixedFloor(xr.fLeft);
|
|
dst->fTop = SkFixedFloor(xr.fTop);
|
|
dst->fRight = SkFixedCeil(xr.fRight);
|
|
dst->fBottom = SkFixedCeil(xr.fBottom);
|
|
}
|
|
|
|
#endif
|