FX_BOOL CPDF_ImageRenderer::StartBitmapAlpha() {
if (m_pDIBSource->IsOpaqueImage()) {
CFX_PathData path;
path.AppendRect(0, 0, 1, 1);
path.Transform(&m_ImageMatrix);
FX_DWORD fill_color =
ArgbEncode(0xff, m_BitmapAlpha, m_BitmapAlpha, m_BitmapAlpha);
m_pRenderStatus->m_pDevice->DrawPath(&path, NULL, NULL, fill_color, 0,
FXFILL_WINDING);
} else {
const CFX_DIBSource* pAlphaMask = m_pDIBSource->IsAlphaMask()
? m_pDIBSource
: m_pDIBSource->GetAlphaMask();
if (FXSYS_fabs(m_ImageMatrix.b) >= 0.5f ||
FXSYS_fabs(m_ImageMatrix.c) >= 0.5f) {
int left, top;
nonstd::unique_ptr<CFX_DIBitmap> pTransformed(
pAlphaMask->TransformTo(&m_ImageMatrix, left, top));
if (!pTransformed)
return TRUE;
m_pRenderStatus->m_pDevice->SetBitMask(
pTransformed.get(), left, top,
ArgbEncode(0xff, m_BitmapAlpha, m_BitmapAlpha, m_BitmapAlpha));
} else {
CFX_FloatRect image_rect_f = m_ImageMatrix.GetUnitRect();
FX_RECT image_rect = image_rect_f.GetOutterRect();
int dest_width =
m_ImageMatrix.a > 0 ? image_rect.Width() : -image_rect.Width();
int dest_height =
m_ImageMatrix.d > 0 ? -image_rect.Height() : image_rect.Height();
int left = dest_width > 0 ? image_rect.left : image_rect.right;
int top = dest_height > 0 ? image_rect.top : image_rect.bottom;
m_pRenderStatus->m_pDevice->StretchBitMask(
pAlphaMask, left, top, dest_width, dest_height,
ArgbEncode(0xff, m_BitmapAlpha, m_BitmapAlpha, m_BitmapAlpha));
}
if (m_pDIBSource != pAlphaMask) {
delete pAlphaMask;
}
}
return FALSE;
}
FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause) {
if (m_Status == 1) {
if (m_Stretcher->Continue(pPause))
return TRUE;
if (m_Storer.GetBitmap()) {
std::unique_ptr<CFX_DIBitmap> swapped(
m_Storer.GetBitmap()->SwapXY(m_pMatrix->c > 0, m_pMatrix->b < 0));
m_Storer.Replace(std::move(swapped));
}
return FALSE;
}
if (m_Status == 2)
return m_Stretcher->Continue(pPause);
if (m_Status != 3)
return FALSE;
if (m_Stretcher->Continue(pPause))
return TRUE;
int stretch_width = m_StretchClip.Width();
int stretch_height = m_StretchClip.Height();
if (!m_Storer.GetBitmap())
return FALSE;
const uint8_t* stretch_buf = m_Storer.GetBitmap()->GetBuffer();
const uint8_t* stretch_buf_mask = nullptr;
if (m_Storer.GetBitmap()->m_pAlphaMask)
stretch_buf_mask = m_Storer.GetBitmap()->m_pAlphaMask->GetBuffer();
int stretch_pitch = m_Storer.GetBitmap()->GetPitch();
std::unique_ptr<CFX_DIBitmap> pTransformed(new CFX_DIBitmap);
FXDIB_Format transformF = GetTransformedFormat(m_Stretcher->source());
if (!pTransformed->Create(m_result.Width(), m_result.Height(), transformF))
return FALSE;
pTransformed->Clear(0);
if (pTransformed->m_pAlphaMask)
pTransformed->m_pAlphaMask->Clear(0);
CFX_Matrix result2stretch(1.0f, 0.0f, 0.0f, 1.0f, (FX_FLOAT)(m_result.left),
(FX_FLOAT)(m_result.top));
result2stretch.Concat(m_dest2stretch);
result2stretch.TranslateI(-m_StretchClip.left, -m_StretchClip.top);
if (!stretch_buf_mask && pTransformed->m_pAlphaMask) {
pTransformed->m_pAlphaMask->Clear(0xff000000);
} else if (pTransformed->m_pAlphaMask) {
int stretch_pitch_mask = m_Storer.GetBitmap()->m_pAlphaMask->GetPitch();
if (!(m_Flags & FXDIB_DOWNSAMPLE) && !(m_Flags & FXDIB_BICUBIC_INTERPOL)) {
CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
for (int row = 0; row < m_result.Height(); row++) {
uint8_t* dest_pos_mask =
(uint8_t*)pTransformed->m_pAlphaMask->GetScanline(row);
for (int col = 0; col < m_result.Width(); col++) {
int src_col_l, src_row_l, res_x, res_y;
result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x,
res_y);
if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 &&
src_row_l <= stretch_height) {
if (src_col_l == stretch_width) {
src_col_l--;
}
if (src_row_l == stretch_height) {
src_row_l--;
}
int src_col_r = src_col_l + 1;
int src_row_r = src_row_l + 1;
if (src_col_r == stretch_width) {
src_col_r--;
}
if (src_row_r == stretch_height) {
src_row_r--;
}
int row_offset_l = src_row_l * stretch_pitch_mask;
int row_offset_r = src_row_r * stretch_pitch_mask;
*dest_pos_mask =
bilinear_interpol(stretch_buf_mask, row_offset_l, row_offset_r,
src_col_l, src_col_r, res_x, res_y, 1, 0);
}
dest_pos_mask++;
}
}
} else if (m_Flags & FXDIB_BICUBIC_INTERPOL) {
CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
for (int row = 0; row < m_result.Height(); row++) {
uint8_t* dest_pos_mask =
(uint8_t*)pTransformed->m_pAlphaMask->GetScanline(row);
for (int col = 0; col < m_result.Width(); col++) {
int src_col_l, src_row_l, res_x, res_y;
result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x,
res_y);
if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 &&
src_row_l <= stretch_height) {
int pos_pixel[8];
int u_w[4], v_w[4];
if (src_col_l == stretch_width) {
src_col_l--;
}
if (src_row_l == stretch_height) {
src_row_l--;
}
bicubic_get_pos_weight(pos_pixel, u_w, v_w, src_col_l, src_row_l,
res_x, res_y, stretch_width, stretch_height);
*dest_pos_mask =
bicubic_interpol(stretch_buf_mask, stretch_pitch_mask,
pos_pixel, u_w, v_w, res_x, res_y, 1, 0);
}
dest_pos_mask++;
}
}
} else {
CPDF_FixedMatrix result2stretch_fix(result2stretch, 8);
for (int row = 0; row < m_result.Height(); row++) {
uint8_t* dest_pos_mask =
(uint8_t*)pTransformed->m_pAlphaMask->GetScanline(row);
for (int col = 0; col < m_result.Width(); col++) {
int src_col, src_row;
result2stretch_fix.Transform(col, row, src_col, src_row);
if (src_col >= 0 && src_col <= stretch_width && src_row >= 0 &&
src_row <= stretch_height) {
if (src_col == stretch_width) {
src_col--;
}
if (src_row == stretch_height) {
src_row--;
}
*dest_pos_mask =
stretch_buf_mask[src_row * stretch_pitch_mask + src_col];
}
dest_pos_mask++;
}
}
}
}
if (m_Storer.GetBitmap()->IsAlphaMask()) {
if (!(m_Flags & FXDIB_DOWNSAMPLE) && !(m_Flags & FXDIB_BICUBIC_INTERPOL)) {
CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
for (int row = 0; row < m_result.Height(); row++) {
uint8_t* dest_scan = (uint8_t*)pTransformed->GetScanline(row);
for (int col = 0; col < m_result.Width(); col++) {
int src_col_l, src_row_l, res_x, res_y;
result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x,
res_y);
if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 &&
src_row_l <= stretch_height) {
if (src_col_l == stretch_width) {
src_col_l--;
}
if (src_row_l == stretch_height) {
src_row_l--;
}
int src_col_r = src_col_l + 1;
int src_row_r = src_row_l + 1;
if (src_col_r == stretch_width) {
src_col_r--;
}
if (src_row_r == stretch_height) {
src_row_r--;
}
int row_offset_l = src_row_l * stretch_pitch;
int row_offset_r = src_row_r * stretch_pitch;
*dest_scan =
bilinear_interpol(stretch_buf, row_offset_l, row_offset_r,
src_col_l, src_col_r, res_x, res_y, 1, 0);
}
dest_scan++;
}
}
} else if (m_Flags & FXDIB_BICUBIC_INTERPOL) {
CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
for (int row = 0; row < m_result.Height(); row++) {
uint8_t* dest_scan = (uint8_t*)pTransformed->GetScanline(row);
for (int col = 0; col < m_result.Width(); col++) {
int src_col_l, src_row_l, res_x, res_y;
result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x,
res_y);
if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 &&
src_row_l <= stretch_height) {
int pos_pixel[8];
int u_w[4], v_w[4];
if (src_col_l == stretch_width) {
src_col_l--;
}
if (src_row_l == stretch_height) {
src_row_l--;
}
bicubic_get_pos_weight(pos_pixel, u_w, v_w, src_col_l, src_row_l,
res_x, res_y, stretch_width, stretch_height);
*dest_scan = bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel,
u_w, v_w, res_x, res_y, 1, 0);
}
dest_scan++;
}
}
} else {
CPDF_FixedMatrix result2stretch_fix(result2stretch, 8);
for (int row = 0; row < m_result.Height(); row++) {
uint8_t* dest_scan = (uint8_t*)pTransformed->GetScanline(row);
for (int col = 0; col < m_result.Width(); col++) {
int src_col, src_row;
result2stretch_fix.Transform(col, row, src_col, src_row);
if (src_col >= 0 && src_col <= stretch_width && src_row >= 0 &&
src_row <= stretch_height) {
if (src_col == stretch_width) {
src_col--;
}
if (src_row == stretch_height) {
src_row--;
}
const uint8_t* src_pixel =
stretch_buf + stretch_pitch * src_row + src_col;
*dest_scan = *src_pixel;
}
dest_scan++;
}
}
}
} else {
int Bpp = m_Storer.GetBitmap()->GetBPP() / 8;
if (Bpp == 1) {
uint32_t argb[256];
FX_ARGB* pPal = m_Storer.GetBitmap()->GetPalette();
if (pPal) {
for (int i = 0; i < 256; i++) {
argb[i] = pPal[i];
}
} else {
if (m_Storer.GetBitmap()->IsCmykImage()) {
for (int i = 0; i < 256; i++) {
argb[i] = 255 - i;
}
} else {
for (int i = 0; i < 256; i++) {
argb[i] = 0xff000000 | (i * 0x010101);
}
}
}
int destBpp = pTransformed->GetBPP() / 8;
if (!(m_Flags & FXDIB_DOWNSAMPLE) &&
!(m_Flags & FXDIB_BICUBIC_INTERPOL)) {
CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
for (int row = 0; row < m_result.Height(); row++) {
uint8_t* dest_pos = (uint8_t*)pTransformed->GetScanline(row);
for (int col = 0; col < m_result.Width(); col++) {
int src_col_l, src_row_l, res_x, res_y;
result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x,
res_y);
if (src_col_l >= 0 && src_col_l <= stretch_width &&
src_row_l >= 0 && src_row_l <= stretch_height) {
if (src_col_l == stretch_width) {
src_col_l--;
}
if (src_row_l == stretch_height) {
src_row_l--;
}
int src_col_r = src_col_l + 1;
int src_row_r = src_row_l + 1;
if (src_col_r == stretch_width) {
src_col_r--;
}
if (src_row_r == stretch_height) {
src_row_r--;
}
int row_offset_l = src_row_l * stretch_pitch;
int row_offset_r = src_row_r * stretch_pitch;
uint32_t r_bgra_cmyk = argb[bilinear_interpol(
stretch_buf, row_offset_l, row_offset_r, src_col_l, src_col_r,
res_x, res_y, 1, 0)];
if (transformF == FXDIB_Rgba) {
dest_pos[0] = (uint8_t)(r_bgra_cmyk >> 24);
dest_pos[1] = (uint8_t)(r_bgra_cmyk >> 16);
dest_pos[2] = (uint8_t)(r_bgra_cmyk >> 8);
} else {
*(uint32_t*)dest_pos = r_bgra_cmyk;
}
}
dest_pos += destBpp;
}
}