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// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "core/fxge/dib/fx_dib.h"
#include <tuple>
#include <utility>
#include "build/build_config.h"
#include "core/fxcrt/fx_extension.h"
#if defined(OS_WIN)
static_assert(sizeof(FX_COLORREF) == sizeof(COLORREF),
"FX_COLORREF vs. COLORREF mismatch");
#endif
FXDIB_Format MakeRGBFormat(int bpp) {
switch (bpp) {
case 1:
return FXDIB_Format::k1bppRgb;
case 8:
return FXDIB_Format::k8bppRgb;
case 24:
return FXDIB_Format::kRgb;
case 32:
return FXDIB_Format::kRgb32;
default:
return FXDIB_Format::kInvalid;
}
}
FXDIB_ResampleOptions::FXDIB_ResampleOptions() = default;
bool FXDIB_ResampleOptions::HasAnyOptions() const {
return bInterpolateBilinear || bHalftone || bNoSmoothing || bLossy;
}
FX_RECT FXDIB_SwapClipBox(const FX_RECT& clip,
int width,
int height,
bool bFlipX,
bool bFlipY) {
FX_RECT rect;
if (bFlipY) {
rect.left = height - clip.top;
rect.right = height - clip.bottom;
} else {
rect.left = clip.top;
rect.right = clip.bottom;
}
if (bFlipX) {
rect.top = width - clip.left;
rect.bottom = width - clip.right;
} else {
rect.top = clip.left;
rect.bottom = clip.right;
}
rect.Normalize();
return rect;
}
std::tuple<int, int, int, int> ArgbDecode(FX_ARGB argb) {
return std::make_tuple(FXARGB_A(argb), FXARGB_R(argb), FXARGB_G(argb),
FXARGB_B(argb));
}
std::pair<int, FX_COLORREF> ArgbToAlphaAndColorRef(FX_ARGB argb) {
return {FXARGB_A(argb), ArgbToColorRef(argb)};
}
FX_COLORREF ArgbToColorRef(FX_ARGB argb) {
return FXSYS_BGR(FXARGB_B(argb), FXARGB_G(argb), FXARGB_R(argb));
}
FX_ARGB AlphaAndColorRefToArgb(int a, FX_COLORREF colorref) {
return ArgbEncode(a, FXSYS_GetRValue(colorref), FXSYS_GetGValue(colorref),
FXSYS_GetBValue(colorref));
}
FX_ARGB StringToFXARGB(WideStringView view) {
static constexpr FX_ARGB kDefaultValue = 0xff000000;
if (view.IsEmpty())
return kDefaultValue;
int cc = 0;
const wchar_t* str = view.unterminated_c_str();
int len = view.GetLength();
while (cc < len && FXSYS_iswspace(str[cc]))
cc++;
if (cc >= len)
return kDefaultValue;
uint8_t r = 0;
uint8_t g = 0;
uint8_t b = 0;
while (cc < len) {
if (str[cc] == ',' || !FXSYS_IsDecimalDigit(str[cc]))
break;
r = r * 10 + str[cc] - '0';
cc++;
}
if (cc < len && str[cc] == ',') {
cc++;
while (cc < len && FXSYS_iswspace(str[cc]))
cc++;
while (cc < len) {
if (str[cc] == ',' || !FXSYS_IsDecimalDigit(str[cc]))
break;
g = g * 10 + str[cc] - '0';
cc++;
}
if (cc < len && str[cc] == ',') {
cc++;
while (cc < len && FXSYS_iswspace(str[cc]))
cc++;
while (cc < len) {
if (str[cc] == ',' || !FXSYS_IsDecimalDigit(str[cc]))
break;
b = b * 10 + str[cc] - '0';
cc++;
}
}
}
return (0xffU << 24) | (r << 16) | (g << 8) | b;
}