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created XImage::Compose

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Signed-off-by: Sergey Isakov <isakov-sl@bk.ru>
This commit is contained in:
Sergey Isakov 2020-02-25 23:19:39 +03:00
parent 282bc531d7
commit a0b40c06dc
3 changed files with 84 additions and 55 deletions
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74
rEFIt_UEFI/libeg/XImage.cpp
View File

@ -26,51 +26,75 @@ EFI_GRAPHICS_OUTPUT_BLT_PIXEL* XImage::GetData()
return PixelData;
}
UINTN XImage::GetWidth()
{
return Width;
}
UINTN XImage::GetHeight()
{
return Height;
UINTN XImage::GetWidth()
{
return Width;
}
size_t XImage::GetSize()
UINTN XImage::GetHeight()
{
return Height;
}
UINTN XImage::GetSize()
{
return Width * Height * sizeof(EFI_GRAPHICS_OUTPUT_BLT_PIXEL);
}
void XImage::Fill(EFI_GRAPHICS_OUTPUT_BLT_PIXEL Color)
{
for (int i = 0; i < Height; ++i)
for (int j = 0; j < Width; ++j)
for (UINTN i = 0; i < Height; ++i)
for (UINTN j = 0; j < Width; ++j)
*PixelData++ = Color;
}
void XImage::FillArea(EFI_GRAPHICS_OUTPUT_BLT_PIXEL Color, const EgRect& Rect)
{
for (int y = Rect.Ypos; y < Rect.Height && y < Height; ++y) {
for (UINTN y = Rect.Ypos; y < Rect.Height && y < Height; ++y) {
EFI_GRAPHICS_OUTPUT_BLT_PIXEL* Ptr = PixelData + y * Width + Rect.Xpos;
for (int x = Rect.Xpos; x < Rect.Width && x < Width; ++x)
*PixelData++ = Color;
for (UINTN x = Rect.Xpos; x < Rect.Width && x < Width; ++x)
*Ptr++ = Color;
}
}
void XImage::Compose(XImage& LowImage, XImage& TopImage, int PosX, int PosY, bool Lowest) //lowest image is opaque
void XImage::Compose(int PosX, int PosY, XImage& TopImage, bool Lowest) //lowest image is opaque
{
UINT32 TopAlpha;
UINT32 RevAlpha;
EFI_GRAPHICS_OUTPUT_BLT_PIXEL *TopPtr, *CompPtr;
for (int y = PosY; y < LowImage.GetHeight() && (y - PosY) < TopImage.GetHeight(); y++) {
TopPtr = TopImage.GetData();
CompPtr = LowImage.GetData() + y * LowImage.GetWidth() + PosX;
for (int x = PosX; x < LowImage.GetWidth() && (x - PosX) < TopImage.GetWidth(); x++) {
TopAlpha = TopPtr->Reserved;
RevAlpha = 255 - TopAlpha;
UINT32 TopAlpha;
UINT32 RevAlpha;
UINT32 FinalAlpha;
UINT32 Temp;
EFI_GRAPHICS_OUTPUT_BLT_PIXEL *TopPtr, *CompPtr;
for (UINTN y = PosY; y < Height && (y - PosY) < TopImage.GetHeight(); y++) {
TopPtr = TopImage.GetData();
CompPtr = PixelData + y * Width + PosX;
for (UINTN x = PosX; x < Width && (x - PosX) < TopImage.GetWidth(); x++) {
TopAlpha = TopPtr->Reserved;
RevAlpha = 255 - TopAlpha;
FinalAlpha = (255*255 - RevAlpha*(255 - CompPtr->Reserved)) / 255;
//final alpha =(1-(1-x)*(1-y)) =(255*255-(255-topA)*(255-compA))/255
Temp = ((UINT8)CompPtr->Blue * RevAlpha) + ((UINT8)TopPtr->Blue * TopAlpha);
CompPtr->Blue = (UINT8)(Temp / 255);
Temp = ((UINT8)CompPtr->Green * RevAlpha) + ((UINT8)TopPtr->Green * TopAlpha);
CompPtr->Green = (UINT8)(Temp / 255);
Temp = ((UINT8)CompPtr->Red * RevAlpha) + ((UINT8)TopPtr->Red * TopAlpha);
CompPtr->Red = (UINT8)(Temp / 255);
if (Lowest) {
CompPtr->Reserved = (UINT8)(255);
} else {
CompPtr->Reserved = (UINT8)FinalAlpha;
}
TopPtr++, CompPtr++;
}
}
}

63
rEFIt_UEFI/libeg/XImage.h
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@ -1,7 +1,7 @@
/*
This class will replace EG_IMAGE structure and methods
*/
/*
This class will replace EG_IMAGE structure and methods
*/
#if !defined(__XSTRINGW_H__)
#define __XSTRINGW_H__
@ -23,35 +23,38 @@ typedef union {
*/
typedef struct {
int Xpos;
int Ypos;
int Width;
int Height;
UINTN Xpos;
UINTN Ypos;
UINTN Width;
UINTN Height;
} EgRect;
class XImage
{
protected:
class XImage
{
protected:
UINTN Width;
UINTN Height;
EFI_GRAPHICS_OUTPUT_BLT_PIXEL *PixelData;
bool HasAlpha;
public:
XImage();
XImage(UINTN W, UINTN H, bool HasAlpha);
// XImage(UINTN W, UINTN H, bool HasAlpha, UINT32 Color); //egCreateFilledImage
// XImage(VOID *Data);
~XImage();
public:
size_t GetSize(); //in bytes
EFI_GRAPHICS_OUTPUT_BLT_PIXEL* GetData();
bool HasAlpha;
public:
XImage();
XImage(UINTN W, UINTN H, bool HasAlpha);
// XImage(UINTN W, UINTN H, bool HasAlpha, UINT32 Color); //egCreateFilledImage
// XImage(VOID *Data);
~XImage();
protected:
UINTN GetSize(); //in bytes
public:
EFI_GRAPHICS_OUTPUT_BLT_PIXEL* GetData();
UINTN GetWidth();
UINTN GetHeight();
void Fill(EFI_GRAPHICS_OUTPUT_BLT_PIXEL Color = { 0, 0, 0, 0 });
void FillArea(EFI_GRAPHICS_OUTPUT_BLT_PIXEL Color, const EgRect& Rect);
void Compose(XImage& LowImage, XImage& TopImage, int PosX, int PosY, bool Lowest);
};
#endif //__XSTRINGW_H__
void Fill(EFI_GRAPHICS_OUTPUT_BLT_PIXEL Color = { 0, 0, 0, 0 });
void FillArea(EFI_GRAPHICS_OUTPUT_BLT_PIXEL Color, const EgRect& Rect);
void Compose(int PosX, int PosY, XImage& TopImage, bool Lowest);
};
#endif //__XSTRINGW_H__

2
rEFIt_UEFI/refit.inf
View File

@ -81,6 +81,8 @@
libeg/VectorGraphics.cpp
libeg/libeg.h
libeg/libegint.h
libeg/XImage.cpp
libeg/XImage.h
Platform/AcpiPatcher.cpp
Platform/ati_reg.h
Platform/AmlGenerator.cpp