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262 lines (211 loc) · 7.17 KB
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#include "stdafx.h"
#include "ImageHelper.h"
#include "Image.h"
#include "QColorMatrix.h"
// *************************************************************
// IsEmpty()
// *************************************************************
bool ImageHelper::IsEmpty(IImage* img)
{
if (!img) return true;
VARIANT_BOOL isEmpty;
img->get_IsEmpty(&isEmpty);
return isEmpty ? true: false;
}
// *************************************************************
// Cast()
// *************************************************************
CImageClass* ImageHelper::Cast(IImage* img)
{
return ((CImageClass*)img);
}
// *************************************************************
// GetColorMatrix()
// *************************************************************
Gdiplus::ColorMatrix ImageHelper::GetColorMatrix(IImage* img)
{
if (!img) {
Gdiplus::ColorMatrix matrix;
ZeroMemory((void*)&matrix.m, 25 * sizeof(REAL));
for (int i = 0; i < 5; i++) matrix.m[i][i] = 1.0f;
matrix.m[3][3] = 1.0f;
return matrix;
}
return Cast(img)->GetColorMatrix();
}
// *************************************************************
// GetImageAttributes()
// *************************************************************
Gdiplus::ImageAttributes* ImageHelper::GetImageAttributes(IImage* img)
{
if (!img) return NULL;
Gdiplus::ImageAttributes* attr = new Gdiplus::ImageAttributes();
attr->SetWrapMode(Gdiplus::WrapModeTileFlipXY);
VARIANT_BOOL useTransparency;
img->get_UseTransparencyColor(&useTransparency);
OLE_COLOR clr1, clr2;
img->get_TransparencyColor(&clr1);
img->get_TransparencyColor2(&clr2);
SetTransparency(*attr, useTransparency ? true : false, clr1, clr2);
Gdiplus::ColorMatrix m = GetColorMatrix(img);
attr->SetColorMatrix(&m);
Gdiplus::REAL gamma;
img->get_Gamma(&gamma);
attr->SetGamma(gamma);
return attr;
}
// *************************************************************
// GetImageAttributes()
// *************************************************************
Gdiplus::ImageAttributes* ImageHelper::GetImageAttributes(float alpha, bool useTransparency, OLE_COLOR clr1, OLE_COLOR clr2)
{
Gdiplus::ImageAttributes* attr = new Gdiplus::ImageAttributes();
attr->SetWrapMode(Gdiplus::WrapModeTileFlipXY);
Gdiplus::ColorMatrix matrix;
ZeroMemory((void*)&matrix.m, 25 * sizeof(REAL));
for (int i = 0; i < 5; i++) matrix.m[i][i] = 1.0f;
matrix.m[3][3] = alpha;
attr->SetColorMatrix(&matrix);
SetTransparency(*attr, useTransparency, clr1, clr2);
return attr;
}
// *************************************************************
// SetTransparency()
// *************************************************************
void ImageHelper::SetTransparency(Gdiplus::ImageAttributes& attributes, bool useTransparency, OLE_COLOR clr1, OLE_COLOR clr2)
{
// setting range of colors which will be transparent
if (useTransparency)
{
Gdiplus::Color color1(MIN(GetRValue(clr1), GetRValue(clr2)),
MIN(GetGValue(clr1), GetGValue(clr2)),
MIN(GetBValue(clr1), GetBValue(clr2)));
Gdiplus::Color color2(MAX(GetRValue(clr1), GetRValue(clr2)),
MAX(GetGValue(clr1), GetGValue(clr2)),
MAX(GetBValue(clr1), GetBValue(clr2)));
attributes.SetColorKey(color1, color2);
}
}
// *************************************************************
// GetInterpolationMode()
// *************************************************************
Gdiplus::InterpolationMode ImageHelper::GetInterpolationMode(IImage* image, bool upsampling)
{
if (!image) return Gdiplus::InterpolationModeDefault;
tkInterpolationMode mode;
if (upsampling) {
image->get_UpsamplingMode(&mode);
}
else
{
image->get_DownsamplingMode(&mode);
}
return (Gdiplus::InterpolationMode)mode;
}
// *************************************************************
// GetImageType()
// *************************************************************
::ImageType ImageHelper::GetImageType(IImage* img)
{
if (!img) return USE_FILE_EXTENSION;
::ImageType imageType;
img->get_ImageType(&imageType);
return imageType;
}
// *************************************************************
// GetIsInRam()
// *************************************************************
bool ImageHelper::GetIsInRam(IImage* img)
{
if (!img) return false;
VARIANT_BOOL inram;
img->get_IsInRam(&inram);
return inram ? true : false;
}
// *************************************************************
// GetImageData()
// *************************************************************
unsigned char* ImageHelper::GetImageData(IImage* img)
{
unsigned char* pData = Cast(img)->get_ImageData();
return pData;
}
// *************************************************************
// PutImageData()
// *************************************************************
void ImageHelper::PutImageData(IImage* img, colour* data)
{
Cast(img)->put_ImageData(data);
}
// *************************************************************
// CreateMatrix()
// *************************************************************
Gdiplus::ColorMatrix ImageHelper::CreateMatrix(float contrast, float brightness, float saturation, float hue,
float colorizeIntensity, OLE_COLOR _colorizeColor, bool setToGrey,
double transparencyPercent)
{
QColorMatrix matrix;
matrix.m[3][3] = static_cast<float>(transparencyPercent);
if (contrast != 1.0f) {
matrix.ScaleColors(contrast, MatrixOrderPrepend);
}
if (brightness != 0.0f) {
matrix.TranslateColors(brightness, MatrixOrderAppend);
}
if (saturation != 1.0f) {
matrix.SetSaturation(saturation, MatrixOrderAppend);
}
if (hue != 0.0f) {
matrix.RotateHue(hue);
}
if (colorizeIntensity != 0.0) {
matrix.Colorize(_colorizeColor, colorizeIntensity, MatrixOrderAppend);
}
if (setToGrey) {
matrix.SetGreyscale(MatrixOrderAppend);
}
return matrix;
}
// ******************************************************************
// GetRowBytePad()
// ******************************************************************
// width in bits must be divisible by 32
int ImageHelper::GetRowBytePad(int width, int bitsPerPixel)
{
int pad = (width * bitsPerPixel) % 32;
if (pad != 0)
{
pad = 32 - pad;
pad /= 8;
}
return pad;
}
// ******************************************************************
// GetBitmapHeader()
// ******************************************************************
BITMAPINFO ImageHelper::GetBitmapHeader(int bitsPerPixel, int width, int height, int pad)
{
BITMAPINFO bif;
BITMAPINFOHEADER bih;
bih.biBitCount = bitsPerPixel;
bih.biWidth = width;
bih.biHeight = height;
bih.biPlanes = 1;
bih.biSize = sizeof(BITMAPINFOHEADER);
bih.biCompression = 0;
bih.biXPelsPerMeter = 0;
bih.biYPelsPerMeter = 0;
bih.biClrUsed = 0;
bih.biClrImportant = 0;
bih.biSizeImage = (width * bitsPerPixel / 8 + pad) * height;
bif.bmiHeader = bih;
return bif;
}
// ******************************************************************
// GetGdiPlusIcon()
// ******************************************************************
Gdiplus::Bitmap* ImageHelper::GetGdiPlusIcon(IImage* img)
{
if (!img) return NULL;
return (Cast(img))->GetIcon();
}