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-rw-r--r--core/fxge/cfx_color.cpp176
-rw-r--r--core/fxge/cfx_color.h57
2 files changed, 233 insertions, 0 deletions
diff --git a/core/fxge/cfx_color.cpp b/core/fxge/cfx_color.cpp
new file mode 100644
index 0000000000..eebdd2cf1c
--- /dev/null
+++ b/core/fxge/cfx_color.cpp
@@ -0,0 +1,176 @@
+// Copyright 2017 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/cfx_color.h"
+
+#include <algorithm>
+
+namespace {
+
+bool InRange(float comp) {
+ return comp >= 0.0f && comp <= 1.0f;
+}
+
+CFX_Color ConvertCMYK2GRAY(float dC, float dM, float dY, float dK) {
+ if (!InRange(dC) || !InRange(dM) || !InRange(dY) || !InRange(dK))
+ return CFX_Color(COLORTYPE_GRAY);
+ return CFX_Color(
+ COLORTYPE_GRAY,
+ 1.0f - std::min(1.0f, 0.3f * dC + 0.59f * dM + 0.11f * dY + dK));
+}
+
+CFX_Color ConvertGRAY2CMYK(float dGray) {
+ if (!InRange(dGray))
+ return CFX_Color(COLORTYPE_CMYK);
+ return CFX_Color(COLORTYPE_CMYK, 0.0f, 0.0f, 0.0f, 1.0f - dGray);
+}
+
+CFX_Color ConvertGRAY2RGB(float dGray) {
+ if (!InRange(dGray))
+ return CFX_Color(COLORTYPE_RGB);
+ return CFX_Color(COLORTYPE_RGB, dGray, dGray, dGray);
+}
+
+CFX_Color ConvertRGB2GRAY(float dR, float dG, float dB) {
+ if (!InRange(dR) || !InRange(dG) || !InRange(dB))
+ return CFX_Color(COLORTYPE_GRAY);
+ return CFX_Color(COLORTYPE_GRAY, 0.3f * dR + 0.59f * dG + 0.11f * dB);
+}
+
+CFX_Color ConvertCMYK2RGB(float dC, float dM, float dY, float dK) {
+ if (!InRange(dC) || !InRange(dM) || !InRange(dY) || !InRange(dK))
+ return CFX_Color(COLORTYPE_RGB);
+ return CFX_Color(COLORTYPE_RGB, 1.0f - std::min(1.0f, dC + dK),
+ 1.0f - std::min(1.0f, dM + dK),
+ 1.0f - std::min(1.0f, dY + dK));
+}
+
+CFX_Color ConvertRGB2CMYK(float dR, float dG, float dB) {
+ if (!InRange(dR) || !InRange(dG) || !InRange(dB))
+ return CFX_Color(COLORTYPE_CMYK);
+
+ float c = 1.0f - dR;
+ float m = 1.0f - dG;
+ float y = 1.0f - dB;
+ return CFX_Color(COLORTYPE_CMYK, c, m, y, std::min(c, std::min(m, y)));
+}
+
+} // namespace
+
+CFX_Color CFX_Color::ConvertColorType(int32_t nConvertColorType) const {
+ if (nColorType == nConvertColorType)
+ return *this;
+
+ CFX_Color ret;
+ switch (nColorType) {
+ case COLORTYPE_TRANSPARENT:
+ ret = *this;
+ ret.nColorType = COLORTYPE_TRANSPARENT;
+ break;
+ case COLORTYPE_GRAY:
+ switch (nConvertColorType) {
+ case COLORTYPE_RGB:
+ ret = ConvertGRAY2RGB(fColor1);
+ break;
+ case COLORTYPE_CMYK:
+ ret = ConvertGRAY2CMYK(fColor1);
+ break;
+ }
+ break;
+ case COLORTYPE_RGB:
+ switch (nConvertColorType) {
+ case COLORTYPE_GRAY:
+ ret = ConvertRGB2GRAY(fColor1, fColor2, fColor3);
+ break;
+ case COLORTYPE_CMYK:
+ ret = ConvertRGB2CMYK(fColor1, fColor2, fColor3);
+ break;
+ }
+ break;
+ case COLORTYPE_CMYK:
+ switch (nConvertColorType) {
+ case COLORTYPE_GRAY:
+ ret = ConvertCMYK2GRAY(fColor1, fColor2, fColor3, fColor4);
+ break;
+ case COLORTYPE_RGB:
+ ret = ConvertCMYK2RGB(fColor1, fColor2, fColor3, fColor4);
+ break;
+ }
+ break;
+ }
+ return ret;
+}
+
+FX_COLORREF CFX_Color::ToFXColor(int32_t nTransparency) const {
+ CFX_Color ret;
+ switch (nColorType) {
+ case COLORTYPE_TRANSPARENT: {
+ ret = CFX_Color(COLORTYPE_TRANSPARENT, 0, 0, 0, 0);
+ break;
+ }
+ case COLORTYPE_GRAY: {
+ ret = ConvertGRAY2RGB(fColor1);
+ ret.fColor4 = nTransparency;
+ break;
+ }
+ case COLORTYPE_RGB: {
+ ret = CFX_Color(COLORTYPE_RGB, fColor1, fColor2, fColor3);
+ ret.fColor4 = nTransparency;
+ break;
+ }
+ case COLORTYPE_CMYK: {
+ ret = ConvertCMYK2RGB(fColor1, fColor2, fColor3, fColor4);
+ ret.fColor4 = nTransparency;
+ break;
+ }
+ }
+ return ArgbEncode(ret.fColor4, static_cast<int32_t>(ret.fColor1 * 255),
+ static_cast<int32_t>(ret.fColor2 * 255),
+ static_cast<int32_t>(ret.fColor3 * 255));
+}
+
+CFX_Color CFX_Color::operator-(float fColorSub) const {
+ CFX_Color sRet(nColorType);
+ switch (nColorType) {
+ case COLORTYPE_TRANSPARENT:
+ sRet.nColorType = COLORTYPE_RGB;
+ sRet.fColor1 = std::max(1.0f - fColorSub, 0.0f);
+ sRet.fColor2 = std::max(1.0f - fColorSub, 0.0f);
+ sRet.fColor3 = std::max(1.0f - fColorSub, 0.0f);
+ break;
+ case COLORTYPE_RGB:
+ case COLORTYPE_GRAY:
+ case COLORTYPE_CMYK:
+ sRet.fColor1 = std::max(fColor1 - fColorSub, 0.0f);
+ sRet.fColor2 = std::max(fColor2 - fColorSub, 0.0f);
+ sRet.fColor3 = std::max(fColor3 - fColorSub, 0.0f);
+ sRet.fColor4 = std::max(fColor4 - fColorSub, 0.0f);
+ break;
+ }
+ return sRet;
+}
+
+CFX_Color CFX_Color::operator/(float fColorDivide) const {
+ CFX_Color sRet(nColorType);
+ switch (nColorType) {
+ case COLORTYPE_TRANSPARENT:
+ sRet.nColorType = COLORTYPE_RGB;
+ sRet.fColor1 = 1.0f / fColorDivide;
+ sRet.fColor2 = 1.0f / fColorDivide;
+ sRet.fColor3 = 1.0f / fColorDivide;
+ break;
+ case COLORTYPE_RGB:
+ case COLORTYPE_GRAY:
+ case COLORTYPE_CMYK:
+ sRet = *this;
+ sRet.fColor1 /= fColorDivide;
+ sRet.fColor2 /= fColorDivide;
+ sRet.fColor3 /= fColorDivide;
+ sRet.fColor4 /= fColorDivide;
+ break;
+ }
+ return sRet;
+}
diff --git a/core/fxge/cfx_color.h b/core/fxge/cfx_color.h
new file mode 100644
index 0000000000..b92c0bcc28
--- /dev/null
+++ b/core/fxge/cfx_color.h
@@ -0,0 +1,57 @@
+// Copyright 2017 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
+
+#ifndef CORE_FXGE_CFX_COLOR_H_
+#define CORE_FXGE_CFX_COLOR_H_
+
+#include "core/fpdfdoc/cpdf_formcontrol.h"
+#include "core/fxge/fx_dib.h"
+
+struct CFX_Color {
+ explicit CFX_Color(FX_COLORREF ref)
+ : CFX_Color(FXARGB_R(ref), FXARGB_G(ref), FXARGB_B(ref)) {}
+
+ CFX_Color(int32_t type = COLORTYPE_TRANSPARENT,
+ float color1 = 0.0f,
+ float color2 = 0.0f,
+ float color3 = 0.0f,
+ float color4 = 0.0f)
+ : nColorType(type),
+ fColor1(color1),
+ fColor2(color2),
+ fColor3(color3),
+ fColor4(color4) {}
+
+ CFX_Color(int32_t r, int32_t g, int32_t b)
+ : nColorType(COLORTYPE_RGB),
+ fColor1(r / 255.0f),
+ fColor2(g / 255.0f),
+ fColor3(b / 255.0f),
+ fColor4(0) {}
+
+ CFX_Color operator/(float fColorDivide) const;
+ CFX_Color operator-(float fColorSub) const;
+
+ CFX_Color ConvertColorType(int32_t other_nColorType) const;
+
+ FX_COLORREF ToFXColor(int32_t nTransparency) const;
+
+ void Reset() {
+ nColorType = COLORTYPE_TRANSPARENT;
+ fColor1 = 0.0f;
+ fColor2 = 0.0f;
+ fColor3 = 0.0f;
+ fColor4 = 0.0f;
+ }
+
+ int32_t nColorType;
+ float fColor1;
+ float fColor2;
+ float fColor3;
+ float fColor4;
+};
+
+#endif // CORE_FXGE_CFX_COLOR_H_
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-20 11:55:39 +0000