void CWeightTable::Calc(int dest_len, int dest_min, int dest_max, int src_len, int src_min, int src_max, int flags)
{
if (m_pWeightTables) {
FX_Free(m_pWeightTables);
m_pWeightTables = NULL;
}
double scale, base;
scale = FXSYS_Div((FX_FLOAT)(src_len), (FX_FLOAT)(dest_len));
if (dest_len < 0) {
base = (FX_FLOAT)(src_len);
} else {
base = 0;
}
int ext_size = flags & FXDIB_BICUBIC_INTERPOL ? 3 : 1;
m_ItemSize = sizeof(int) * 2 + (int)(sizeof(int) * (FXSYS_ceil(FXSYS_fabs((FX_FLOAT)scale)) + ext_size));
m_DestMin = dest_min;
if ((dest_max - dest_min) > (int)((1U << 30) - 4) / m_ItemSize) {
return;
}
m_pWeightTables = FX_TryAlloc(FX_BYTE, (dest_max - dest_min) * m_ItemSize + 4);
if (m_pWeightTables == NULL) {
return;
}
if ((flags & FXDIB_NOSMOOTH) != 0 || FXSYS_fabs((FX_FLOAT)scale) < 1.0f) {
for (int dest_pixel = dest_min; dest_pixel < dest_max; dest_pixel ++) {
PixelWeight& pixel_weights = *GetPixelWeight(dest_pixel);
double src_pos = dest_pixel * scale + scale / 2 + base;
if (flags & FXDIB_INTERPOL) {
pixel_weights.m_SrcStart = (int)FXSYS_floor((FX_FLOAT)src_pos - 1.0f / 2);
pixel_weights.m_SrcEnd = (int)FXSYS_floor((FX_FLOAT)src_pos + 1.0f / 2);
if (pixel_weights.m_SrcStart < src_min) {
pixel_weights.m_SrcStart = src_min;
}
if (pixel_weights.m_SrcEnd >= src_max) {
pixel_weights.m_SrcEnd = src_max - 1;
}
if (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd) {
pixel_weights.m_Weights[0] = 65536;
} else {
pixel_weights.m_Weights[1] = FXSYS_round((FX_FLOAT)(src_pos - pixel_weights.m_SrcStart - 1.0f / 2) * 65536);
pixel_weights.m_Weights[0] = 65536 - pixel_weights.m_Weights[1];
}
} else if (flags & FXDIB_BICUBIC_INTERPOL) {
pixel_weights.m_SrcStart = (int)FXSYS_floor((FX_FLOAT)src_pos - 1.0f / 2);
pixel_weights.m_SrcEnd = (int)FXSYS_floor((FX_FLOAT)src_pos + 1.0f / 2);
int start = pixel_weights.m_SrcStart - 1;
int end = pixel_weights.m_SrcEnd + 1;
if (start < src_min) {
start = src_min;
}
if (end >= src_max) {
end = src_max - 1;
}
if (pixel_weights.m_SrcStart < src_min) {
src_pos += src_min - pixel_weights.m_SrcStart;
pixel_weights.m_SrcStart = src_min;
}
if (pixel_weights.m_SrcEnd >= src_max) {
pixel_weights.m_SrcEnd = src_max - 1;
}
int weight;
weight = FXSYS_round((FX_FLOAT)(src_pos - pixel_weights.m_SrcStart - 1.0f / 2) * 256);
if (start == end) {
pixel_weights.m_Weights[0] = (SDP_Table[256 + weight] + SDP_Table[weight] + SDP_Table[256 - weight] + SDP_Table[512 - weight]) << 8;
} else if ((start == pixel_weights.m_SrcStart && (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd ||
end == pixel_weights.m_SrcEnd) && start < end) || (start < pixel_weights.m_SrcStart && pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd && end == pixel_weights.m_SrcEnd)) {
if (start < pixel_weights.m_SrcStart) {
pixel_weights.m_Weights[0] = SDP_Table[256 + weight] << 8;
pixel_weights.m_Weights[1] = (SDP_Table[weight] + SDP_Table[256 - weight] + SDP_Table[512 - weight]) << 8;
} else {
if (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd) {
pixel_weights.m_Weights[0] = (SDP_Table[256 + weight] + SDP_Table[weight] + SDP_Table[256 - weight]) << 8;
pixel_weights.m_Weights[1] = SDP_Table[512 - weight] << 8;
} else {
pixel_weights.m_Weights[0] = (SDP_Table[256 + weight] + SDP_Table[weight]) << 8;
pixel_weights.m_Weights[1] = (SDP_Table[256 - weight] + SDP_Table[512 - weight]) << 8;
}
}
if (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd) {
pixel_weights.m_SrcEnd = end;
}
if (start < pixel_weights.m_SrcStart) {
pixel_weights.m_SrcStart = start;
}
} else if (start == pixel_weights.m_SrcStart &&
start < pixel_weights.m_SrcEnd &&
pixel_weights.m_SrcEnd < end) {
pixel_weights.m_Weights[0] = (SDP_Table[256 + weight] + SDP_Table[weight]) << 8;
pixel_weights.m_Weights[1] = SDP_Table[256 - weight] << 8;
pixel_weights.m_Weights[2] = SDP_Table[512 - weight] << 8;
pixel_weights.m_SrcEnd = end;
} else if (start < pixel_weights.m_SrcStart &&
pixel_weights.m_SrcStart < pixel_weights.m_SrcEnd &&
pixel_weights.m_SrcEnd == end) {
pixel_weights.m_Weights[0] = SDP_Table[256 + weight] << 8;
pixel_weights.m_Weights[1] = SDP_Table[weight] << 8;
pixel_weights.m_Weights[2] = (SDP_Table[256 - weight] + SDP_Table[512 - weight]) << 8;
pixel_weights.m_SrcStart = start;
} else {
pixel_weights.m_Weights[0] = SDP_Table[256 + weight] << 8;
pixel_weights.m_Weights[1] = SDP_Table[weight] << 8;
pixel_weights.m_Weights[2] = SDP_Table[256 - weight] << 8;
pixel_weights.m_Weights[3] = SDP_Table[512 - weight] << 8;
pixel_weights.m_SrcStart = start;
pixel_weights.m_SrcEnd = end;
}
} else {
pixel_weights.m_SrcStart = pixel_weights.m_SrcEnd = (int)FXSYS_floor((FX_FLOAT)src_pos);
if (pixel_weights.m_SrcStart < src_min) {
pixel_weights.m_SrcStart = src_min;
}
if (pixel_weights.m_SrcEnd >= src_max) {
pixel_weights.m_SrcEnd = src_max - 1;
}
pixel_weights.m_Weights[0] = 65536;
}
}
return;
}
for (int dest_pixel = dest_min; dest_pixel < dest_max; dest_pixel ++) {
PixelWeight& pixel_weights = *GetPixelWeight(dest_pixel);
double src_start = dest_pixel * scale + base;
double src_end = src_start + scale;
int start_i, end_i;
if (src_start < src_end) {
start_i = (int)FXSYS_floor((FX_FLOAT)src_start);
end_i = (int)FXSYS_ceil((FX_FLOAT)src_end);
} else {
start_i = (int)FXSYS_floor((FX_FLOAT)src_end);
end_i = (int)FXSYS_ceil((FX_FLOAT)src_start);
}
if (start_i < src_min) {
start_i = src_min;
}
if (end_i >= src_max) {
end_i = src_max - 1;
}
if (start_i > end_i) {
if (start_i >= src_max) {
start_i = src_max - 1;
}
pixel_weights.m_SrcStart = start_i;
pixel_weights.m_SrcEnd = start_i;
continue;
}
pixel_weights.m_SrcStart = start_i;
pixel_weights.m_SrcEnd = end_i;
for (int j = start_i; j <= end_i; j ++) {
double dest_start = FXSYS_Div((FX_FLOAT)(j) - base, scale);
double dest_end = FXSYS_Div((FX_FLOAT)(j + 1) - base, scale);
if (dest_start > dest_end) {
double temp = dest_start;
dest_start = dest_end;
dest_end = temp;
}
double area_start = dest_start > (FX_FLOAT)(dest_pixel) ? dest_start : (FX_FLOAT)(dest_pixel);
double area_end = dest_end > (FX_FLOAT)(dest_pixel + 1) ? (FX_FLOAT)(dest_pixel + 1) : dest_end;
double weight = area_start >= area_end ? 0.0f : area_end - area_start;
if (weight == 0 && j == end_i) {
pixel_weights.m_SrcEnd --;
break;
}
pixel_weights.m_Weights[j - start_i] = FXSYS_round((FX_FLOAT)(weight * 65536));
}
}
}
CStretchEngine::CStretchEngine(IFX_ScanlineComposer* pDestBitmap,
FXDIB_Format dest_format,
int dest_width,
int dest_height,
const FX_RECT& clip_rect,
const CFX_DIBSource* pSrcBitmap,
int flags) {
m_State = 0;
m_DestFormat = dest_format;
m_DestBpp = dest_format & 0xff;
m_SrcBpp = pSrcBitmap->GetFormat() & 0xff;
m_bHasAlpha = pSrcBitmap->GetFormat() & 0x200;
m_pSrcPalette = pSrcBitmap->GetPalette();
m_pDestBitmap = pDestBitmap;
m_DestWidth = dest_width;
m_DestHeight = dest_height;
m_pInterBuf = nullptr;
m_pExtraAlphaBuf = nullptr;
m_pDestMaskScanline = nullptr;
m_DestClip = clip_rect;
uint32_t size = clip_rect.Width();
if (size && m_DestBpp > (int)(INT_MAX / size)) {
return;
}
size *= m_DestBpp;
if (size > INT_MAX - 31) {
return;
}
size += 31;
size = size / 32 * 4;
m_pDestScanline = FX_TryAlloc(uint8_t, size);
if (!m_pDestScanline) {
return;
}
if (dest_format == FXDIB_Rgb32) {
FXSYS_memset(m_pDestScanline, 255, size);
}
m_InterPitch = (m_DestClip.Width() * m_DestBpp + 31) / 32 * 4;
m_ExtraMaskPitch = (m_DestClip.Width() * 8 + 31) / 32 * 4;
m_pInterBuf = nullptr;
m_pSource = pSrcBitmap;
m_SrcWidth = pSrcBitmap->GetWidth();
m_SrcHeight = pSrcBitmap->GetHeight();
m_SrcPitch = (m_SrcWidth * m_SrcBpp + 31) / 32 * 4;
if ((flags & FXDIB_NOSMOOTH) == 0) {
bool bInterpol = flags & FXDIB_INTERPOL || flags & FXDIB_BICUBIC_INTERPOL;
if (!bInterpol && FXSYS_abs(dest_width) != 0 &&
FXSYS_abs(dest_height) / 8 < static_cast<long long>(m_SrcWidth) *
m_SrcHeight / FXSYS_abs(dest_width)) {
flags = FXDIB_INTERPOL;
}
m_Flags = flags;
} else {
m_Flags = FXDIB_NOSMOOTH;
if (flags & FXDIB_DOWNSAMPLE) {
m_Flags |= FXDIB_DOWNSAMPLE;
}
}
double scale_x = (FX_FLOAT)m_SrcWidth / (FX_FLOAT)m_DestWidth;
double scale_y = (FX_FLOAT)m_SrcHeight / (FX_FLOAT)m_DestHeight;
double base_x = m_DestWidth > 0 ? 0.0f : (FX_FLOAT)(m_DestWidth);
double base_y = m_DestHeight > 0 ? 0.0f : (FX_FLOAT)(m_DestHeight);
double src_left = scale_x * ((FX_FLOAT)(clip_rect.left) + base_x);
double src_right = scale_x * ((FX_FLOAT)(clip_rect.right) + base_x);
double src_top = scale_y * ((FX_FLOAT)(clip_rect.top) + base_y);
double src_bottom = scale_y * ((FX_FLOAT)(clip_rect.bottom) + base_y);
if (src_left > src_right) {
double temp = src_left;
src_left = src_right;
src_right = temp;
}
if (src_top > src_bottom) {
double temp = src_top;
src_top = src_bottom;
src_bottom = temp;
}
m_SrcClip.left = (int)FXSYS_floor((FX_FLOAT)src_left);
m_SrcClip.right = (int)FXSYS_ceil((FX_FLOAT)src_right);
m_SrcClip.top = (int)FXSYS_floor((FX_FLOAT)src_top);
m_SrcClip.bottom = (int)FXSYS_ceil((FX_FLOAT)src_bottom);
FX_RECT src_rect(0, 0, m_SrcWidth, m_SrcHeight);
m_SrcClip.Intersect(src_rect);
if (m_SrcBpp == 1) {
if (m_DestBpp == 8) {
m_TransMethod = 1;
} else {
m_TransMethod = 2;
}
} else if (m_SrcBpp == 8) {
if (m_DestBpp == 8) {
if (!m_bHasAlpha) {
m_TransMethod = 3;
} else {
m_TransMethod = 4;
}
} else {
if (!m_bHasAlpha) {
m_TransMethod = 5;
} else {
m_TransMethod = 6;
}
}
} else {
if (!m_bHasAlpha) {
m_TransMethod = 7;
} else {
m_TransMethod = 8;
}
}
}
static void DrawGouraud(CFX_DIBitmap* pBitmap,
int alpha,
CPDF_MeshVertex triangle[3]) {
FX_FLOAT min_y = triangle[0].y, max_y = triangle[0].y;
for (int i = 1; i < 3; i++) {
if (min_y > triangle[i].y) {
min_y = triangle[i].y;
}
if (max_y < triangle[i].y) {
max_y = triangle[i].y;
}
}
if (min_y == max_y) {
return;
}
int min_yi = (int)FXSYS_floor(min_y), max_yi = (int)FXSYS_ceil(max_y);
if (min_yi < 0) {
min_yi = 0;
}
if (max_yi >= pBitmap->GetHeight()) {
max_yi = pBitmap->GetHeight() - 1;
}
for (int y = min_yi; y <= max_yi; y++) {
int nIntersects = 0;
FX_FLOAT inter_x[3], r[3], g[3], b[3];
for (int i = 0; i < 3; i++) {
CPDF_MeshVertex& vertex1 = triangle[i];
CPDF_MeshVertex& vertex2 = triangle[(i + 1) % 3];
FX_BOOL bIntersect = _GetScanlineIntersect(
y, vertex1.x, vertex1.y, vertex2.x, vertex2.y, inter_x[nIntersects]);
if (!bIntersect) {
continue;
}
r[nIntersects] =
vertex1.r + FXSYS_MulDiv(vertex2.r - vertex1.r, y - vertex1.y,
vertex2.y - vertex1.y);
g[nIntersects] =
vertex1.g + FXSYS_MulDiv(vertex2.g - vertex1.g, y - vertex1.y,
vertex2.y - vertex1.y);
b[nIntersects] =
vertex1.b + FXSYS_MulDiv(vertex2.b - vertex1.b, y - vertex1.y,
vertex2.y - vertex1.y);
nIntersects++;
}
if (nIntersects != 2) {
continue;
}
int min_x, max_x, start_index, end_index;
if (inter_x[0] < inter_x[1]) {
min_x = (int)FXSYS_floor(inter_x[0]);
max_x = (int)FXSYS_ceil(inter_x[1]);
start_index = 0;
end_index = 1;
} else {
min_x = (int)FXSYS_floor(inter_x[1]);
max_x = (int)FXSYS_ceil(inter_x[0]);
start_index = 1;
end_index = 0;
}
int start_x = min_x, end_x = max_x;
if (start_x < 0) {
start_x = 0;
}
if (end_x > pBitmap->GetWidth()) {
end_x = pBitmap->GetWidth();
}
uint8_t* dib_buf =
pBitmap->GetBuffer() + y * pBitmap->GetPitch() + start_x * 4;
FX_FLOAT r_unit = (r[end_index] - r[start_index]) / (max_x - min_x);
FX_FLOAT g_unit = (g[end_index] - g[start_index]) / (max_x - min_x);
FX_FLOAT b_unit = (b[end_index] - b[start_index]) / (max_x - min_x);
FX_FLOAT R = r[start_index] + (start_x - min_x) * r_unit;
FX_FLOAT G = g[start_index] + (start_x - min_x) * g_unit;
FX_FLOAT B = b[start_index] + (start_x - min_x) * b_unit;
for (int x = start_x; x < end_x; x++) {
R += r_unit;
G += g_unit;
B += b_unit;
FXARGB_SETDIB(dib_buf,
FXARGB_MAKE(alpha, (int32_t)(R * 255), (int32_t)(G * 255),
(int32_t)(B * 255)));
dib_buf += 4;
}
}
}
void CPDF_RenderStatus::DrawTilingPattern(CPDF_TilingPattern* pPattern,
CPDF_PageObject* pPageObj,
const CFX_AffineMatrix* pObj2Device,
FX_BOOL bStroke) {
if (!pPattern->Load()) {
return;
}
m_pDevice->SaveState();
if (pPageObj->m_Type == PDFPAGE_PATH) {
if (!SelectClipPath((CPDF_PathObject*)pPageObj, pObj2Device, bStroke)) {
m_pDevice->RestoreState();
return;
}
} else if (pPageObj->m_Type == PDFPAGE_IMAGE) {
FX_RECT rect = pPageObj->GetBBox(pObj2Device);
m_pDevice->SetClip_Rect(&rect);
} else {
return;
}
FX_RECT clip_box = m_pDevice->GetClipBox();
if (clip_box.IsEmpty()) {
m_pDevice->RestoreState();
return;
}
CFX_Matrix dCTM = m_pDevice->GetCTM();
FX_FLOAT sa = FXSYS_fabs(dCTM.a);
FX_FLOAT sd = FXSYS_fabs(dCTM.d);
clip_box.right = clip_box.left + (int32_t)FXSYS_ceil(clip_box.Width() * sa);
clip_box.bottom = clip_box.top + (int32_t)FXSYS_ceil(clip_box.Height() * sd);
CFX_AffineMatrix mtPattern2Device = pPattern->m_Pattern2Form;
mtPattern2Device.Concat(*pObj2Device);
GetScaledMatrix(mtPattern2Device);
FX_BOOL bAligned = FALSE;
if (pPattern->m_BBox.left == 0 && pPattern->m_BBox.bottom == 0 &&
pPattern->m_BBox.right == pPattern->m_XStep &&
pPattern->m_BBox.top == pPattern->m_YStep &&
(mtPattern2Device.IsScaled() || mtPattern2Device.Is90Rotated())) {
bAligned = TRUE;
}
CFX_FloatRect cell_bbox = pPattern->m_BBox;
mtPattern2Device.TransformRect(cell_bbox);
int width = (int)FXSYS_ceil(cell_bbox.Width());
int height = (int)FXSYS_ceil(cell_bbox.Height());
if (width == 0) {
width = 1;
}
if (height == 0) {
height = 1;
}
int min_col, max_col, min_row, max_row;
CFX_AffineMatrix mtDevice2Pattern;
mtDevice2Pattern.SetReverse(mtPattern2Device);
CFX_FloatRect clip_box_p(clip_box);
clip_box_p.Transform(&mtDevice2Pattern);
min_col = (int)FXSYS_ceil(
FXSYS_Div(clip_box_p.left - pPattern->m_BBox.right, pPattern->m_XStep));
max_col = (int)FXSYS_floor(
FXSYS_Div(clip_box_p.right - pPattern->m_BBox.left, pPattern->m_XStep));
min_row = (int)FXSYS_ceil(
FXSYS_Div(clip_box_p.bottom - pPattern->m_BBox.top, pPattern->m_YStep));
max_row = (int)FXSYS_floor(
FXSYS_Div(clip_box_p.top - pPattern->m_BBox.bottom, pPattern->m_YStep));
if (width > clip_box.Width() || height > clip_box.Height() ||
width * height > clip_box.Width() * clip_box.Height()) {
CPDF_GraphicStates* pStates = NULL;
if (!pPattern->m_bColored) {
pStates = CloneObjStates(pPageObj, bStroke);
}
CPDF_Dictionary* pFormResource = NULL;
if (pPattern->m_pForm->m_pFormDict) {
pFormResource =
pPattern->m_pForm->m_pFormDict->GetDict(FX_BSTRC("Resources"));
}
for (int col = min_col; col <= max_col; col++)
for (int row = min_row; row <= max_row; row++) {
FX_FLOAT orig_x, orig_y;
orig_x = col * pPattern->m_XStep;
orig_y = row * pPattern->m_YStep;
mtPattern2Device.Transform(orig_x, orig_y);
CFX_AffineMatrix matrix = *pObj2Device;
matrix.Translate(orig_x - mtPattern2Device.e,
orig_y - mtPattern2Device.f);
m_pDevice->SaveState();
CPDF_RenderStatus status;
status.Initialize(m_pContext, m_pDevice, NULL, NULL, this, pStates,
&m_Options, pPattern->m_pForm->m_Transparency,
m_bDropObjects, pFormResource);
status.RenderObjectList(pPattern->m_pForm, &matrix);
m_pDevice->RestoreState();
}
m_pDevice->RestoreState();
delete pStates;
return;
}
if (bAligned) {
int orig_x = FXSYS_round(mtPattern2Device.e);
int orig_y = FXSYS_round(mtPattern2Device.f);
min_col = (clip_box.left - orig_x) / width;
if (clip_box.left < orig_x) {
min_col--;
}
max_col = (clip_box.right - orig_x) / width;
if (clip_box.right <= orig_x) {
max_col--;
}
min_row = (clip_box.top - orig_y) / height;
if (clip_box.top < orig_y) {
min_row--;
}
max_row = (clip_box.bottom - orig_y) / height;
if (clip_box.bottom <= orig_y) {
max_row--;
}
}
FX_FLOAT left_offset = cell_bbox.left - mtPattern2Device.e;
FX_FLOAT top_offset = cell_bbox.bottom - mtPattern2Device.f;
CFX_DIBitmap* pPatternBitmap = NULL;
if (width * height < 16) {
CFX_DIBitmap* pEnlargedBitmap =
DrawPatternBitmap(m_pContext->m_pDocument, m_pContext->m_pPageCache,
pPattern, pObj2Device, 8, 8, m_Options.m_Flags);
pPatternBitmap = pEnlargedBitmap->StretchTo(width, height);
delete pEnlargedBitmap;
} else {
pPatternBitmap = DrawPatternBitmap(
m_pContext->m_pDocument, m_pContext->m_pPageCache, pPattern,
pObj2Device, width, height, m_Options.m_Flags);
}
if (pPatternBitmap == NULL) {
m_pDevice->RestoreState();
return;
}
if (m_Options.m_ColorMode == RENDER_COLOR_GRAY) {
pPatternBitmap->ConvertColorScale(m_Options.m_ForeColor,
m_Options.m_BackColor);
}
FX_ARGB fill_argb = GetFillArgb(pPageObj);
int clip_width = clip_box.right - clip_box.left;
int clip_height = clip_box.bottom - clip_box.top;
CFX_DIBitmap screen;
if (!screen.Create(clip_width, clip_height, FXDIB_Argb)) {
return;
}
screen.Clear(0);
FX_DWORD* src_buf = (FX_DWORD*)pPatternBitmap->GetBuffer();
for (int col = min_col; col <= max_col; col++) {
for (int row = min_row; row <= max_row; row++) {
int start_x, start_y;
if (bAligned) {
start_x = FXSYS_round(mtPattern2Device.e) + col * width - clip_box.left;
start_y = FXSYS_round(mtPattern2Device.f) + row * height - clip_box.top;
} else {
FX_FLOAT orig_x = col * pPattern->m_XStep;
FX_FLOAT orig_y = row * pPattern->m_YStep;
mtPattern2Device.Transform(orig_x, orig_y);
start_x = FXSYS_round(orig_x + left_offset) - clip_box.left;
start_y = FXSYS_round(orig_y + top_offset) - clip_box.top;
}
if (width == 1 && height == 1) {
if (start_x < 0 || start_x >= clip_box.Width() || start_y < 0 ||
start_y >= clip_box.Height()) {
continue;
}
FX_DWORD* dest_buf =
(FX_DWORD*)(screen.GetBuffer() + screen.GetPitch() * start_y +
start_x * 4);
if (pPattern->m_bColored) {
*dest_buf = *src_buf;
} else {
*dest_buf = (*(uint8_t*)src_buf << 24) | (fill_argb & 0xffffff);
}
} else {
if (pPattern->m_bColored) {
screen.CompositeBitmap(start_x, start_y, width, height,
pPatternBitmap, 0, 0);
} else {
screen.CompositeMask(start_x, start_y, width, height, pPatternBitmap,
fill_argb, 0, 0);
}
}
}
}
CompositeDIBitmap(&screen, clip_box.left, clip_box.top, 0, 255,
FXDIB_BLEND_NORMAL, FALSE);
m_pDevice->RestoreState();
delete pPatternBitmap;
}
FX_BOOL CPDF_PSEngine::DoOperator(PDF_PSOP op) {
int i1, i2;
FX_FLOAT d1, d2;
switch (op) {
case PSOP_ADD:
d1 = Pop();
d2 = Pop();
Push(d1 + d2);
break;
case PSOP_SUB:
d2 = Pop();
d1 = Pop();
Push(d1 - d2);
break;
case PSOP_MUL:
d1 = Pop();
d2 = Pop();
Push(d1 * d2);
break;
case PSOP_DIV:
d2 = Pop();
d1 = Pop();
Push(d1 / d2);
break;
case PSOP_IDIV:
i2 = (int)Pop();
i1 = (int)Pop();
Push(i1 / i2);
break;
case PSOP_MOD:
i2 = (int)Pop();
i1 = (int)Pop();
Push(i1 % i2);
break;
case PSOP_NEG:
d1 = Pop();
Push(-d1);
break;
case PSOP_ABS:
d1 = Pop();
Push((FX_FLOAT)FXSYS_fabs(d1));
break;
case PSOP_CEILING:
d1 = Pop();
Push((FX_FLOAT)FXSYS_ceil(d1));
break;
case PSOP_FLOOR:
d1 = Pop();
Push((FX_FLOAT)FXSYS_floor(d1));
break;
case PSOP_ROUND:
d1 = Pop();
Push(FXSYS_round(d1));
break;
case PSOP_TRUNCATE:
i1 = (int)Pop();
Push(i1);
break;
case PSOP_SQRT:
d1 = Pop();
Push((FX_FLOAT)FXSYS_sqrt(d1));
break;
case PSOP_SIN:
d1 = Pop();
Push((FX_FLOAT)FXSYS_sin(d1 * PI / 180.0f));
break;
case PSOP_COS:
d1 = Pop();
Push((FX_FLOAT)FXSYS_cos(d1 * PI / 180.0f));
break;
case PSOP_ATAN:
d2 = Pop();
d1 = Pop();
d1 = (FX_FLOAT)(FXSYS_atan2(d1, d2) * 180.0 / PI);
if (d1 < 0) {
d1 += 360;
}
Push(d1);
break;
case PSOP_EXP:
d2 = Pop();
d1 = Pop();
Push((FX_FLOAT)FXSYS_pow(d1, d2));
break;
case PSOP_LN:
d1 = Pop();
Push((FX_FLOAT)FXSYS_log(d1));
break;
case PSOP_LOG:
d1 = Pop();
Push((FX_FLOAT)FXSYS_log10(d1));
break;
case PSOP_CVI:
i1 = (int)Pop();
Push(i1);
break;
case PSOP_CVR:
break;
case PSOP_EQ:
d2 = Pop();
d1 = Pop();
Push((int)(d1 == d2));
break;
case PSOP_NE:
d2 = Pop();
d1 = Pop();
Push((int)(d1 != d2));
break;
case PSOP_GT:
d2 = Pop();
d1 = Pop();
Push((int)(d1 > d2));
break;
case PSOP_GE:
d2 = Pop();
d1 = Pop();
Push((int)(d1 >= d2));
break;
case PSOP_LT:
d2 = Pop();
d1 = Pop();
Push((int)(d1 < d2));
break;
case PSOP_LE:
d2 = Pop();
d1 = Pop();
Push((int)(d1 <= d2));
break;
case PSOP_AND:
i1 = (int)Pop();
i2 = (int)Pop();
Push(i1 & i2);
break;
case PSOP_OR:
i1 = (int)Pop();
i2 = (int)Pop();
Push(i1 | i2);
break;
case PSOP_XOR:
i1 = (int)Pop();
i2 = (int)Pop();
Push(i1 ^ i2);
break;
case PSOP_NOT:
i1 = (int)Pop();
Push((int)!i1);
break;
case PSOP_BITSHIFT: {
int shift = (int)Pop();
int i = (int)Pop();
if (shift > 0) {
Push(i << shift);
} else {
Push(i >> -shift);
}
break;
}
case PSOP_TRUE:
Push(1);
break;
case PSOP_FALSE:
Push(0);
break;
case PSOP_POP:
Pop();
break;
case PSOP_EXCH:
d2 = Pop();
d1 = Pop();
Push(d2);
Push(d1);
break;
case PSOP_DUP:
d1 = Pop();
Push(d1);
Push(d1);
break;
case PSOP_COPY: {
int n = (int)Pop();
if (n < 0 || n > PSENGINE_STACKSIZE ||
m_StackCount + n > PSENGINE_STACKSIZE || n > m_StackCount) {
break;
}
for (int i = 0; i < n; i++) {
m_Stack[m_StackCount + i] = m_Stack[m_StackCount + i - n];
}
m_StackCount += n;
break;
}
case PSOP_INDEX: {
int n = (int)Pop();
if (n < 0 || n >= m_StackCount) {
break;
}
Push(m_Stack[m_StackCount - n - 1]);
break;
}
case PSOP_ROLL: {
int j = (int)Pop();
int n = (int)Pop();
if (m_StackCount == 0) {
break;
}
if (n < 0 || n > m_StackCount) {
break;
}
if (j < 0)
for (int i = 0; i < -j; i++) {
FX_FLOAT first = m_Stack[m_StackCount - n];
for (int ii = 0; ii < n - 1; ii++) {
m_Stack[m_StackCount - n + ii] = m_Stack[m_StackCount - n + ii + 1];
}
m_Stack[m_StackCount - 1] = first;
}
else
for (int i = 0; i < j; i++) {
FX_FLOAT last = m_Stack[m_StackCount - 1];
int ii;
for (ii = 0; ii < n - 1; ii++) {
m_Stack[m_StackCount - ii - 1] = m_Stack[m_StackCount - ii - 2];
}
m_Stack[m_StackCount - ii - 1] = last;
}
break;
}
default:
break;
}
return TRUE;
}