| /* 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 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 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 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 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 |