| // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "base/gfx/skia_utils.h" |
| |
| #include "base/logging.h" |
| #include "SkRect.h" |
| #include "SkGradientShader.h" |
| |
| namespace { |
| |
| COMPILE_ASSERT(offsetof(RECT, left) == offsetof(SkIRect, fLeft), o1); |
| COMPILE_ASSERT(offsetof(RECT, top) == offsetof(SkIRect, fTop), o2); |
| COMPILE_ASSERT(offsetof(RECT, right) == offsetof(SkIRect, fRight), o3); |
| COMPILE_ASSERT(offsetof(RECT, bottom) == offsetof(SkIRect, fBottom), o4); |
| COMPILE_ASSERT(sizeof(RECT().left) == sizeof(SkIRect().fLeft), o5); |
| COMPILE_ASSERT(sizeof(RECT().top) == sizeof(SkIRect().fTop), o6); |
| COMPILE_ASSERT(sizeof(RECT().right) == sizeof(SkIRect().fRight), o7); |
| COMPILE_ASSERT(sizeof(RECT().bottom) == sizeof(SkIRect().fBottom), o8); |
| COMPILE_ASSERT(sizeof(RECT) == sizeof(SkIRect), o9); |
| |
| } // namespace |
| |
| namespace gfx { |
| |
| POINT SkPointToPOINT(const SkPoint& point) { |
| POINT win_point = { SkScalarRound(point.fX), SkScalarRound(point.fY) }; |
| return win_point; |
| } |
| |
| SkRect RECTToSkRect(const RECT& rect) { |
| SkRect sk_rect = { SkIntToScalar(rect.left), SkIntToScalar(rect.top), |
| SkIntToScalar(rect.right), SkIntToScalar(rect.bottom) }; |
| return sk_rect; |
| } |
| |
| SkShader* CreateGradientShader(int start_point, |
| int end_point, |
| SkColor start_color, |
| SkColor end_color) { |
| SkColor grad_colors[2] = { start_color, end_color}; |
| SkPoint grad_points[2]; |
| grad_points[0].set(SkIntToScalar(0), SkIntToScalar(start_point)); |
| grad_points[1].set(SkIntToScalar(0), SkIntToScalar(end_point)); |
| |
| return SkGradientShader::CreateLinear( |
| grad_points, grad_colors, NULL, 2, SkShader::kRepeat_TileMode); |
| } |
| |
| |
| SkColor COLORREFToSkColor(COLORREF color) { |
| #ifndef _MSC_VER |
| return SkColorSetRGB(GetRValue(color), GetGValue(color), GetBValue(color)); |
| #else |
| // ARGB = 0xFF000000 | ((0BGR -> RGB0) >> 8) |
| return 0xFF000000u | (_byteswap_ulong(color) >> 8); |
| #endif |
| } |
| |
| COLORREF SkColorToCOLORREF(SkColor color) { |
| // Currently, Alpha is always 255 or the color is 0 so there is no need to |
| // demultiply the channels. If this DCHECK() is ever hit, the full |
| // (SkColorGetX(color) * 255 / a) will have to be added in the conversion. |
| DCHECK((0xFF == SkColorGetA(color)) || (0 == color)); |
| #ifndef _MSC_VER |
| return RGB(SkColorGetR(color), SkColorGetG(color), SkColorGetB(color)); |
| #else |
| // 0BGR = ((ARGB -> BGRA) >> 8) |
| return (_byteswap_ulong(color) >> 8); |
| #endif |
| } |
| |
| } // namespace gfx |
| |