void CPDF_ReflowedPage::FocusGetData(const CFX_AffineMatrix matrix, FX_INT32 x, FX_INT32 y, CFX_ByteString& str)
{
if (NULL == m_pReflowed) {
return;
}
CFX_AffineMatrix revMatrix;
revMatrix.SetReverse(matrix);
FX_FLOAT x1, y1;
revMatrix.Transform((float)x, (float)y, x1, y1);
int count = m_pReflowed->GetSize();
FX_FLOAT dx = 1000, dy = 1000;
FX_INT32 pos = 0;
FX_INT32 i;
for(i = 0; i < count; i++) {
CRF_Data* pData = (*m_pReflowed)[i];
FX_FLOAT tempdy = FXSYS_fabs(pData->m_PosY - y1);
if(FXSYS_fabs(tempdy - dy) < 1) {
continue;
}
CFX_FloatRect rect (0, pData->m_PosY + pData->m_Height, this->m_PageWidth, pData->m_PosY);
if(rect.Contains(x1, y1)) {
pos = i;
dx = 0;
dy = 0;
break;
} else if(tempdy < dy) {
dy = tempdy;
dx = FXSYS_fabs(pData->m_PosX - x1);
pos = i;
} else if (tempdy == dy) {
FX_FLOAT tempdx = FXSYS_fabs(pData->m_PosX - x1);
if(tempdx < dx) {
dx = tempdx;
pos = i;
}
} else if (tempdy > dy) {
break;
}
}
if(dx != 0 || dy != 0) {
count = count < (pos + 10) ? count : (pos + 10);
for(i = 0 > (pos - 10) ? 0 : (pos - 10); i < count; i++) {
CRF_Data* pData = (*m_pReflowed)[i];
FX_FLOAT tempdy = FXSYS_fabs(pData->m_PosY - y1);
if(tempdy < dy) {
dy = tempdy;
dx = FXSYS_fabs(pData->m_PosX - x1);
pos = i;
} else if (tempdy == dy) {
FX_FLOAT tempdx = FXSYS_fabs(pData->m_PosX - x1);
if(tempdx < dx) {
dx = tempdx;
pos = i;
}
}
}
}
str.Format("%d", pos);
}
static void DrawAxialShading(CFX_DIBitmap* pBitmap,
CFX_AffineMatrix* pObject2Bitmap,
CPDF_Dictionary* pDict,
CPDF_Function** pFuncs,
int nFuncs,
CPDF_ColorSpace* pCS,
int alpha) {
ASSERT(pBitmap->GetFormat() == FXDIB_Argb);
CPDF_Array* pCoords = pDict->GetArray(FX_BSTRC("Coords"));
if (pCoords == NULL) {
return;
}
FX_FLOAT start_x = pCoords->GetNumber(0);
FX_FLOAT start_y = pCoords->GetNumber(1);
FX_FLOAT end_x = pCoords->GetNumber(2);
FX_FLOAT end_y = pCoords->GetNumber(3);
FX_FLOAT t_min = 0, t_max = 1.0f;
CPDF_Array* pArray = pDict->GetArray(FX_BSTRC("Domain"));
if (pArray) {
t_min = pArray->GetNumber(0);
t_max = pArray->GetNumber(1);
}
FX_BOOL bStartExtend = FALSE, bEndExtend = FALSE;
pArray = pDict->GetArray(FX_BSTRC("Extend"));
if (pArray) {
bStartExtend = pArray->GetInteger(0);
bEndExtend = pArray->GetInteger(1);
}
int width = pBitmap->GetWidth();
int height = pBitmap->GetHeight();
FX_FLOAT x_span = end_x - start_x;
FX_FLOAT y_span = end_y - start_y;
FX_FLOAT axis_len_square =
FXSYS_Mul(x_span, x_span) + FXSYS_Mul(y_span, y_span);
CFX_AffineMatrix matrix;
matrix.SetReverse(*pObject2Bitmap);
int total_results = 0;
for (int j = 0; j < nFuncs; j++) {
if (pFuncs[j]) {
total_results += pFuncs[j]->CountOutputs();
}
}
if (pCS->CountComponents() > total_results) {
total_results = pCS->CountComponents();
}
CFX_FixedBufGrow<FX_FLOAT, 16> result_array(total_results);
FX_FLOAT* pResults = result_array;
FXSYS_memset(pResults, 0, total_results * sizeof(FX_FLOAT));
FX_DWORD rgb_array[SHADING_STEPS];
for (int i = 0; i < SHADING_STEPS; i++) {
FX_FLOAT input = (t_max - t_min) * i / SHADING_STEPS + t_min;
int offset = 0;
for (int j = 0; j < nFuncs; j++) {
if (pFuncs[j]) {
int nresults = 0;
if (pFuncs[j]->Call(&input, 1, pResults + offset, nresults)) {
offset += nresults;
}
}
}
FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f;
pCS->GetRGB(pResults, R, G, B);
rgb_array[i] =
FXARGB_TODIB(FXARGB_MAKE(alpha, FXSYS_round(R * 255),
FXSYS_round(G * 255), FXSYS_round(B * 255)));
}
int pitch = pBitmap->GetPitch();
for (int row = 0; row < height; row++) {
FX_DWORD* dib_buf = (FX_DWORD*)(pBitmap->GetBuffer() + row * pitch);
for (int column = 0; column < width; column++) {
FX_FLOAT x = (FX_FLOAT)column, y = (FX_FLOAT)row;
matrix.Transform(x, y);
FX_FLOAT scale = FXSYS_Div(
FXSYS_Mul(x - start_x, x_span) + FXSYS_Mul(y - start_y, y_span),
axis_len_square);
int index = (int32_t)(scale * (SHADING_STEPS - 1));
if (index < 0) {
if (!bStartExtend) {
continue;
}
index = 0;
} else if (index >= SHADING_STEPS) {
if (!bEndExtend) {
continue;
}
index = SHADING_STEPS - 1;
}
dib_buf[column] = rgb_array[index];
}
}
}
static void DrawRadialShading(CFX_DIBitmap* pBitmap,
CFX_AffineMatrix* pObject2Bitmap,
CPDF_Dictionary* pDict,
CPDF_Function** pFuncs,
int nFuncs,
CPDF_ColorSpace* pCS,
int alpha) {
ASSERT(pBitmap->GetFormat() == FXDIB_Argb);
CPDF_Array* pCoords = pDict->GetArray(FX_BSTRC("Coords"));
if (pCoords == NULL) {
return;
}
FX_FLOAT start_x = pCoords->GetNumber(0);
FX_FLOAT start_y = pCoords->GetNumber(1);
FX_FLOAT start_r = pCoords->GetNumber(2);
FX_FLOAT end_x = pCoords->GetNumber(3);
FX_FLOAT end_y = pCoords->GetNumber(4);
FX_FLOAT end_r = pCoords->GetNumber(5);
CFX_AffineMatrix matrix;
matrix.SetReverse(*pObject2Bitmap);
FX_FLOAT t_min = 0, t_max = 1.0f;
CPDF_Array* pArray = pDict->GetArray(FX_BSTRC("Domain"));
if (pArray) {
t_min = pArray->GetNumber(0);
t_max = pArray->GetNumber(1);
}
FX_BOOL bStartExtend = FALSE, bEndExtend = FALSE;
pArray = pDict->GetArray(FX_BSTRC("Extend"));
if (pArray) {
bStartExtend = pArray->GetInteger(0);
bEndExtend = pArray->GetInteger(1);
}
int total_results = 0;
for (int j = 0; j < nFuncs; j++) {
if (pFuncs[j]) {
total_results += pFuncs[j]->CountOutputs();
}
}
if (pCS->CountComponents() > total_results) {
total_results = pCS->CountComponents();
}
CFX_FixedBufGrow<FX_FLOAT, 16> result_array(total_results);
FX_FLOAT* pResults = result_array;
FXSYS_memset(pResults, 0, total_results * sizeof(FX_FLOAT));
FX_DWORD rgb_array[SHADING_STEPS];
for (int i = 0; i < SHADING_STEPS; i++) {
FX_FLOAT input = (t_max - t_min) * i / SHADING_STEPS + t_min;
int offset = 0;
for (int j = 0; j < nFuncs; j++) {
if (pFuncs[j]) {
int nresults;
if (pFuncs[j]->Call(&input, 1, pResults + offset, nresults)) {
offset += nresults;
}
}
}
FX_FLOAT R = 0.0f, G = 0.0f, B = 0.0f;
pCS->GetRGB(pResults, R, G, B);
rgb_array[i] =
FXARGB_TODIB(FXARGB_MAKE(alpha, FXSYS_round(R * 255),
FXSYS_round(G * 255), FXSYS_round(B * 255)));
}
FX_FLOAT a = FXSYS_Mul(start_x - end_x, start_x - end_x) +
FXSYS_Mul(start_y - end_y, start_y - end_y) -
FXSYS_Mul(start_r - end_r, start_r - end_r);
int width = pBitmap->GetWidth();
int height = pBitmap->GetHeight();
int pitch = pBitmap->GetPitch();
FX_BOOL bDecreasing = FALSE;
if (start_r > end_r) {
int length = (int)FXSYS_sqrt((FXSYS_Mul(start_x - end_x, start_x - end_x) +
FXSYS_Mul(start_y - end_y, start_y - end_y)));
if (length < start_r - end_r) {
bDecreasing = TRUE;
}
}
for (int row = 0; row < height; row++) {
FX_DWORD* dib_buf = (FX_DWORD*)(pBitmap->GetBuffer() + row * pitch);
for (int column = 0; column < width; column++) {
FX_FLOAT x = (FX_FLOAT)column, y = (FX_FLOAT)row;
matrix.Transform(x, y);
FX_FLOAT b = -2 * (FXSYS_Mul(x - start_x, end_x - start_x) +
FXSYS_Mul(y - start_y, end_y - start_y) +
FXSYS_Mul(start_r, end_r - start_r));
FX_FLOAT c = FXSYS_Mul(x - start_x, x - start_x) +
FXSYS_Mul(y - start_y, y - start_y) -
FXSYS_Mul(start_r, start_r);
FX_FLOAT s;
if (a == 0) {
s = FXSYS_Div(-c, b);
} else {
FX_FLOAT b2_4ac = FXSYS_Mul(b, b) - 4 * FXSYS_Mul(a, c);
if (b2_4ac < 0) {
continue;
}
FX_FLOAT root = FXSYS_sqrt(b2_4ac);
FX_FLOAT s1, s2;
if (a > 0) {
s1 = FXSYS_Div(-b - root, 2 * a);
s2 = FXSYS_Div(-b + root, 2 * a);
} else {
s2 = FXSYS_Div(-b - root, 2 * a);
s1 = FXSYS_Div(-b + root, 2 * a);
}
if (bDecreasing) {
if (s1 >= 0 || bStartExtend) {
s = s1;
} else {
s = s2;
}
} else {
if (s2 <= 1.0f || bEndExtend) {
s = s2;
} else {
s = s1;
}
}
if ((start_r + s * (end_r - start_r)) < 0) {
continue;
}
}
int index = (int32_t)(s * (SHADING_STEPS - 1));
if (index < 0) {
if (!bStartExtend) {
continue;
}
index = 0;
}
if (index >= SHADING_STEPS) {
if (!bEndExtend) {
continue;
}
index = SHADING_STEPS - 1;
}
dib_buf[column] = rgb_array[index];
}
}
}