void CFX_PathGenerator::AddPie(FX_FLOAT x,
FX_FLOAT y,
FX_FLOAT width,
FX_FLOAT height,
FX_FLOAT start_angle,
FX_FLOAT sweep_angle) {
if (sweep_angle == 0) {
int old_count = m_pPathData->GetPointCount();
m_pPathData->AddPointCount(2);
m_pPathData->SetPoint(old_count, x, y, FXPT_MOVETO);
m_pPathData->SetPoint(
old_count + 1, x + FXSYS_Mul(width, FXSYS_cos(start_angle)),
y + FXSYS_Mul(height, FXSYS_sin(start_angle)), FXPT_LINETO);
return;
}
AddArc(x, y, width, height, start_angle, sweep_angle);
m_pPathData->AddPointCount(1);
m_pPathData->SetPoint(m_pPathData->GetPointCount() - 1, x, y,
FXPT_LINETO | FXPT_CLOSEFIGURE);
}
void CPDF_StreamContentParser::Handle_ShowText_Positioning() {
CPDF_Array* pArray = GetObject(0) ? GetObject(0)->GetArray() : NULL;
if (!pArray) {
return;
}
int n = pArray->GetCount();
int nsegs = 0;
for (int i = 0; i < n; i++) {
if (pArray->GetElementValue(i)->IsString())
nsegs++;
}
if (nsegs == 0) {
for (int i = 0; i < n; i++) {
m_pCurStates->m_TextX -=
FXSYS_Mul(pArray->GetNumber(i),
m_pCurStates->m_TextState.GetFontSize()) /
1000;
}
return;
}
CFX_ByteString* pStrs = new CFX_ByteString[nsegs];
FX_FLOAT* pKerning = FX_Alloc(FX_FLOAT, nsegs);
int iSegment = 0;
FX_FLOAT fInitKerning = 0;
for (int i = 0; i < n; i++) {
CPDF_Object* pObj = pArray->GetElementValue(i);
if (pObj->IsString()) {
CFX_ByteString str = pObj->GetString();
if (str.IsEmpty()) {
continue;
}
pStrs[iSegment] = str;
pKerning[iSegment++] = 0;
} else {
FX_FLOAT num = pObj ? pObj->GetNumber() : 0;
if (iSegment == 0) {
fInitKerning += num;
} else {
pKerning[iSegment - 1] += num;
}
}
}
AddTextObject(pStrs, fInitKerning, pKerning, iSegment);
delete[] pStrs;
FX_Free(pKerning);
}
static void _UpdateLineJoinPoints(CFX_FloatRect& rect,
FX_FLOAT start_x,
FX_FLOAT start_y,
FX_FLOAT middle_x,
FX_FLOAT middle_y,
FX_FLOAT end_x,
FX_FLOAT end_y,
FX_FLOAT half_width,
FX_FLOAT miter_limit) {
FX_FLOAT start_k = 0, start_c = 0, end_k = 0, end_c = 0, start_len = 0,
start_dc = 0, end_len = 0, end_dc = 0;
FX_BOOL bStartVert = FXSYS_fabs(start_x - middle_x) < 1.0f / 20;
FX_BOOL bEndVert = FXSYS_fabs(middle_x - end_x) < 1.0f / 20;
if (bStartVert && bEndVert) {
int start_dir = middle_y > start_y ? 1 : -1;
FX_FLOAT point_y = middle_y + half_width * start_dir;
rect.UpdateRect(middle_x + half_width, point_y);
rect.UpdateRect(middle_x - half_width, point_y);
return;
}
if (!bStartVert) {
start_k = FXSYS_Div(middle_y - start_y, middle_x - start_x);
start_c = middle_y - FXSYS_Mul(start_k, middle_x);
start_len = FXSYS_sqrt2(start_x - middle_x, start_y - middle_y);
start_dc = (FX_FLOAT)FXSYS_fabs(
FXSYS_MulDiv(half_width, start_len, start_x - middle_x));
}
if (!bEndVert) {
end_k = FXSYS_Div(end_y - middle_y, end_x - middle_x);
end_c = middle_y - FXSYS_Mul(end_k, middle_x);
end_len = FXSYS_sqrt2(end_x - middle_x, end_y - middle_y);
end_dc = (FX_FLOAT)FXSYS_fabs(
FXSYS_MulDiv(half_width, end_len, end_x - middle_x));
}
if (bStartVert) {
FX_FLOAT outside_x = start_x;
if (end_x < start_x) {
outside_x += half_width;
} else {
outside_x -= half_width;
}
FX_FLOAT outside_y;
if (start_y < FXSYS_Mul(end_k, start_x) + end_c) {
outside_y = FXSYS_Mul(end_k, outside_x) + end_c + end_dc;
} else {
outside_y = FXSYS_Mul(end_k, outside_x) + end_c - end_dc;
}
rect.UpdateRect(outside_x, outside_y);
return;
}
if (bEndVert) {
FX_FLOAT outside_x = end_x;
if (start_x < end_x) {
outside_x += half_width;
} else {
outside_x -= half_width;
}
FX_FLOAT outside_y;
if (end_y < FXSYS_Mul(start_k, end_x) + start_c) {
outside_y = FXSYS_Mul(start_k, outside_x) + start_c + start_dc;
} else {
outside_y = FXSYS_Mul(start_k, outside_x) + start_c - start_dc;
}
rect.UpdateRect(outside_x, outside_y);
return;
}
if (FXSYS_fabs(start_k - end_k) < 1.0f / 20) {
int start_dir = middle_x > start_x ? 1 : -1;
int end_dir = end_x > middle_x ? 1 : -1;
if (start_dir == end_dir) {
_UpdateLineEndPoints(rect, middle_x, middle_y, end_x, end_y, half_width);
} else {
_UpdateLineEndPoints(rect, start_x, start_y, middle_x, middle_y,
half_width);
}
return;
}
FX_FLOAT start_outside_c = start_c;
if (end_y < FXSYS_Mul(start_k, end_x) + start_c) {
start_outside_c += start_dc;
} else {
start_outside_c -= start_dc;
}
FX_FLOAT end_outside_c = end_c;
if (start_y < FXSYS_Mul(end_k, start_x) + end_c) {
end_outside_c += end_dc;
} else {
end_outside_c -= end_dc;
}
FX_FLOAT join_x = FXSYS_Div(end_outside_c - start_outside_c, start_k - end_k);
FX_FLOAT join_y = FXSYS_Mul(start_k, join_x) + start_outside_c;
rect.UpdateRect(join_x, join_y);
}
static void DrawAxialShading(CFX_DIBitmap* pBitmap,
CFX_Matrix* pObject2Bitmap,
CPDF_Dictionary* pDict,
CPDF_Function** pFuncs,
int nFuncs,
CPDF_ColorSpace* pCS,
int alpha) {
ASSERT(pBitmap->GetFormat() == FXDIB_Argb);
CPDF_Array* pCoords = pDict->GetArray("Coords");
if (!pCoords) {
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("Domain");
if (pArray) {
t_min = pArray->GetNumber(0);
t_max = pArray->GetNumber(1);
}
FX_BOOL bStartExtend = FALSE, bEndExtend = FALSE;
pArray = pDict->GetArray("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_Matrix 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_Matrix* pObject2Bitmap,
CPDF_Dictionary* pDict,
CPDF_Function** pFuncs,
int nFuncs,
CPDF_ColorSpace* pCS,
int alpha) {
ASSERT(pBitmap->GetFormat() == FXDIB_Argb);
CPDF_Array* pCoords = pDict->GetArray("Coords");
if (!pCoords) {
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_Matrix matrix;
matrix.SetReverse(*pObject2Bitmap);
FX_FLOAT t_min = 0, t_max = 1.0f;
CPDF_Array* pArray = pDict->GetArray("Domain");
if (pArray) {
t_min = pArray->GetNumber(0);
t_max = pArray->GetNumber(1);
}
FX_BOOL bStartExtend = FALSE, bEndExtend = FALSE;
pArray = pDict->GetArray("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];
}
}
}
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 = NULL;
m_pExtraAlphaBuf = NULL;
m_pDestMaskScanline = NULL;
m_DestClip = clip_rect;
FX_DWORD 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_AllocNL(FX_BYTE, size);
if (m_pDestScanline == NULL) {
return;
}
if (dest_format == FXDIB_Rgb32) {
FXSYS_memset8(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 = NULL;
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) {
FX_BOOL bInterpol = flags & FXDIB_INTERPOL || flags & FXDIB_BICUBIC_INTERPOL;
if (!bInterpol && FXSYS_abs(dest_width) != 0 && FXSYS_abs(dest_height) < m_SrcWidth * m_SrcHeight * 8 / 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 = FXSYS_Div((FX_FLOAT)(m_SrcWidth), (FX_FLOAT)(m_DestWidth));
double scale_y = FXSYS_Div((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 = FXSYS_Mul(scale_x, (FX_FLOAT)(clip_rect.left) + base_x);
double src_right = FXSYS_Mul(scale_x, (FX_FLOAT)(clip_rect.right) + base_x);
double src_top = FXSYS_Mul(scale_y, (FX_FLOAT)(clip_rect.top) + base_y);
double src_bottom = FXSYS_Mul(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;
}
}
}
void CPDF_TextObject::CalcPositionData(FX_FLOAT* pTextAdvanceX,
FX_FLOAT* pTextAdvanceY,
FX_FLOAT horz_scale,
int level)
{
FX_FLOAT curpos = 0;
FX_FLOAT min_x = 10000 * 1.0f;
FX_FLOAT max_x = -10000 * 1.0f;
FX_FLOAT min_y = 10000 * 1.0f;
FX_FLOAT max_y = -10000 * 1.0f;
CPDF_Font* pFont = m_TextState.GetFont();
FX_BOOL bVertWriting = FALSE;
CPDF_CIDFont* pCIDFont = pFont->GetCIDFont();
if (pCIDFont) {
bVertWriting = pCIDFont->IsVertWriting();
}
FX_FLOAT fontsize = m_TextState.GetFontSize();
for (int i = 0; i < m_nChars; ++i) {
FX_DWORD charcode = m_nChars == 1 ?
(FX_DWORD)(uintptr_t)m_pCharCodes : m_pCharCodes[i];
if (charcode == (FX_DWORD) - 1) {
curpos -= FXSYS_Mul(m_pCharPos[i - 1], fontsize) / 1000;
continue;
}
if (i) {
m_pCharPos[i - 1] = curpos;
}
FX_RECT char_rect;
pFont->GetCharBBox(charcode, char_rect, level);
FX_FLOAT charwidth;
if (!bVertWriting) {
if (min_y > char_rect.top) {
min_y = (FX_FLOAT)char_rect.top;
}
if (max_y < char_rect.top) {
max_y = (FX_FLOAT)char_rect.top;
}
if (min_y > char_rect.bottom) {
min_y = (FX_FLOAT)char_rect.bottom;
}
if (max_y < char_rect.bottom) {
max_y = (FX_FLOAT)char_rect.bottom;
}
FX_FLOAT char_left = curpos + char_rect.left * fontsize / 1000;
FX_FLOAT char_right = curpos + char_rect.right * fontsize / 1000;
if (min_x > char_left) {
min_x = char_left;
}
if (max_x < char_left) {
max_x = char_left;
}
if (min_x > char_right) {
min_x = char_right;
}
if (max_x < char_right) {
max_x = char_right;
}
charwidth = pFont->GetCharWidthF(charcode, level) * fontsize / 1000;
} else {
FX_WORD CID = pCIDFont->CIDFromCharCode(charcode);
short vx;
short vy;
pCIDFont->GetVertOrigin(CID, vx, vy);
char_rect.left -= vx;
char_rect.right -= vx;
char_rect.top -= vy;
char_rect.bottom -= vy;
if (min_x > char_rect.left) {
min_x = (FX_FLOAT)char_rect.left;
}
if (max_x < char_rect.left) {
max_x = (FX_FLOAT)char_rect.left;
}
if (min_x > char_rect.right) {
min_x = (FX_FLOAT)char_rect.right;
}
if (max_x < char_rect.right) {
max_x = (FX_FLOAT)char_rect.right;
}
FX_FLOAT char_top = curpos + char_rect.top * fontsize / 1000;
FX_FLOAT char_bottom = curpos + char_rect.bottom * fontsize / 1000;
if (min_y > char_top) {
min_y = char_top;
}
if (max_y < char_top) {
max_y = char_top;
}
if (min_y > char_bottom) {
min_y = char_bottom;
}
if (max_y < char_bottom) {
max_y = char_bottom;
}
charwidth = pCIDFont->GetVertWidth(CID) * fontsize / 1000;
}
curpos += charwidth;
if (charcode == ' ' && (!pCIDFont || pCIDFont->GetCharSize(32) == 1)) {
curpos += m_TextState.GetObject()->m_WordSpace;
}
curpos += m_TextState.GetObject()->m_CharSpace;
}
if (bVertWriting) {
if (pTextAdvanceX) {
*pTextAdvanceX = 0;
}
if (pTextAdvanceY) {
*pTextAdvanceY = curpos;
}
min_x = min_x * fontsize / 1000;
max_x = max_x * fontsize / 1000;
} else {
if (pTextAdvanceX) {
*pTextAdvanceX = FXSYS_Mul(curpos, horz_scale);
}
if (pTextAdvanceY) {
*pTextAdvanceY = 0;
}
min_y = min_y * fontsize / 1000;
max_y = max_y * fontsize / 1000;
}
CFX_AffineMatrix matrix;
GetTextMatrix(&matrix);
m_Left = min_x;
m_Right = max_x;
m_Bottom = min_y;
m_Top = max_y;
matrix.TransformRect(m_Left, m_Right, m_Top, m_Bottom);
int textmode = m_TextState.GetObject()->m_TextMode;
if (textmode == 1 || textmode == 2 || textmode == 5 || textmode == 6) {
FX_FLOAT half_width = m_GraphState.GetObject()->m_LineWidth / 2;
m_Left -= half_width;
m_Right += half_width;
m_Top += half_width;
m_Bottom -= half_width;
}
}
void CPDF_StreamContentParser::AddTextObject(CFX_ByteString* pStrs,
FX_FLOAT fInitKerning,
FX_FLOAT* pKerning,
int nsegs) {
CPDF_Font* pFont = m_pCurStates->m_TextState.GetFont();
if (!pFont) {
return;
}
if (fInitKerning != 0) {
if (!pFont->IsVertWriting()) {
m_pCurStates->m_TextX -=
FXSYS_Mul(fInitKerning, m_pCurStates->m_TextState.GetFontSize()) /
1000;
} else {
m_pCurStates->m_TextY -=
FXSYS_Mul(fInitKerning, m_pCurStates->m_TextState.GetFontSize()) /
1000;
}
}
if (nsegs == 0) {
return;
}
int textmode;
if (pFont->GetFontType() == PDFFONT_TYPE3) {
textmode = 0;
} else {
textmode = m_pCurStates->m_TextState.GetObject()->m_TextMode;
}
CPDF_TextObject* pText = new CPDF_TextObject;
m_pLastTextObject = pText;
SetGraphicStates(pText, TRUE, TRUE, TRUE);
if (textmode && textmode != 3 && textmode != 4 && textmode != 7) {
FX_FLOAT* pCTM = pText->m_TextState.GetModify()->m_CTM;
pCTM[0] = m_pCurStates->m_CTM.a;
pCTM[1] = m_pCurStates->m_CTM.c;
pCTM[2] = m_pCurStates->m_CTM.b;
pCTM[3] = m_pCurStates->m_CTM.d;
}
pText->SetSegments(pStrs, pKerning, nsegs);
pText->m_PosX = m_pCurStates->m_TextX;
pText->m_PosY = m_pCurStates->m_TextY + m_pCurStates->m_TextRise;
ConvertTextSpace(pText->m_PosX, pText->m_PosY);
FX_FLOAT x_advance, y_advance;
pText->CalcPositionData(&x_advance, &y_advance, m_pCurStates->m_TextHorzScale,
m_Level);
m_pCurStates->m_TextX += x_advance;
m_pCurStates->m_TextY += y_advance;
if (textmode > 3) {
CPDF_TextObject* pCopy = new CPDF_TextObject;
pCopy->Copy(pText);
m_ClipTextList.Add(pCopy);
}
m_pObjectList->m_ObjectList.AddTail(pText);
if (pKerning && pKerning[nsegs - 1] != 0) {
if (!pFont->IsVertWriting()) {
m_pCurStates->m_TextX -=
FXSYS_Mul(pKerning[nsegs - 1],
m_pCurStates->m_TextState.GetFontSize()) /
1000;
} else {
m_pCurStates->m_TextY -=
FXSYS_Mul(pKerning[nsegs - 1],
m_pCurStates->m_TextState.GetFontSize()) /
1000;
}
}
}
void CFX_PathGenerator::AddArc(FX_FLOAT x,
FX_FLOAT y,
FX_FLOAT width,
FX_FLOAT height,
FX_FLOAT start_angle,
FX_FLOAT sweep_angle) {
#if 0
FX_FIXFLOAT32 sweep = sweep_angle;
while (sweep > FIXFLOAT32_PI * 2) {
sweep -= FIXFLOAT32_PI * 2;
}
if (sweep == 0) {
return;
}
m_pPathData->AddPointCount(1);
m_pPathData->SetPoint(m_pPathData->GetPointCount() - 1,
x + fixmul_8_32_to_8(width, fixcos(start_angle)),
y + fixmul_8_32_to_8(height, fixsin(start_angle)), FXPT_MOVETO);
FX_FIXFLOAT32 angle1 = 0, angle2;
FX_BOOL bDone = FALSE;
do {
angle2 = angle1 + FIXFLOAT32_PI / 2;
if (angle2 >= sweep) {
angle2 = sweep;
bDone = TRUE;
}
ArcTo(x, y, width, height, start_angle + angle1, angle2 - angle1);
angle1 = angle2;
} while (!bDone);
#else
if (sweep_angle == 0) {
return;
}
static const FX_FLOAT bezier_arc_angle_epsilon = (FX_FLOAT)(0.01f);
while (start_angle > FX_PI * 2) {
start_angle -= FX_PI * 2;
}
while (start_angle < 0) {
start_angle += FX_PI * 2;
}
if (sweep_angle >= FX_PI * 2) {
sweep_angle = FX_PI * 2;
}
if (sweep_angle <= -FX_PI * 2) {
sweep_angle = -FX_PI * 2;
}
m_pPathData->AddPointCount(1);
m_pPathData->SetPoint(m_pPathData->GetPointCount() - 1,
x + FXSYS_Mul(width, FXSYS_cos(start_angle)),
y + FXSYS_Mul(height, FXSYS_sin(start_angle)),
FXPT_MOVETO);
FX_FLOAT total_sweep = 0, local_sweep = 0, prev_sweep = 0;
FX_BOOL done = FALSE;
do {
if (sweep_angle < 0) {
prev_sweep = total_sweep;
local_sweep = -FX_PI / 2;
total_sweep -= FX_PI / 2;
if (total_sweep <= sweep_angle + bezier_arc_angle_epsilon) {
local_sweep = sweep_angle - prev_sweep;
done = TRUE;
}
} else {
prev_sweep = total_sweep;
local_sweep = FX_PI / 2;
total_sweep += FX_PI / 2;
if (total_sweep >= sweep_angle - bezier_arc_angle_epsilon) {
local_sweep = sweep_angle - prev_sweep;
done = TRUE;
}
}
ArcTo(x, y, width, height, start_angle, local_sweep);
start_angle += local_sweep;
} while (!done);
#endif
}
void CFX_PathGenerator::ArcTo(FX_FLOAT x,
FX_FLOAT y,
FX_FLOAT width,
FX_FLOAT height,
FX_FLOAT start_angle,
FX_FLOAT sweep_angle) {
FX_FLOAT x0 = FXSYS_cos(sweep_angle / 2);
FX_FLOAT y0 = FXSYS_sin(sweep_angle / 2);
FX_FLOAT tx = FXSYS_Div((1.0f - x0) * 4, 3 * 1.0f);
FX_FLOAT ty = y0 - FXSYS_Div(FXSYS_Mul(tx, x0), y0);
FX_FLOAT px[3], py[3];
px[0] = x0 + tx;
py[0] = -ty;
px[1] = x0 + tx;
py[1] = ty;
FX_FLOAT sn = FXSYS_sin(start_angle + sweep_angle / 2);
FX_FLOAT cs = FXSYS_cos(start_angle + sweep_angle / 2);
int old_count = m_pPathData->GetPointCount();
m_pPathData->AddPointCount(3);
FX_FLOAT bezier_x, bezier_y;
bezier_x = x + FXSYS_Mul(width, FXSYS_Mul(px[0], cs) - FXSYS_Mul(py[0], sn));
bezier_y = y + FXSYS_Mul(height, FXSYS_Mul(px[0], sn) + FXSYS_Mul(py[0], cs));
m_pPathData->SetPoint(old_count, bezier_x, bezier_y, FXPT_BEZIERTO);
bezier_x = x + FXSYS_Mul(width, FXSYS_Mul(px[1], cs) - FXSYS_Mul(py[1], sn));
bezier_y = y + FXSYS_Mul(height, FXSYS_Mul(px[1], sn) + FXSYS_Mul(py[1], cs));
m_pPathData->SetPoint(old_count + 1, bezier_x, bezier_y, FXPT_BEZIERTO);
bezier_x = x + FXSYS_Mul(width, FXSYS_cos(start_angle + sweep_angle)),
bezier_y = y + FXSYS_Mul(height, FXSYS_sin(start_angle + sweep_angle));
m_pPathData->SetPoint(old_count + 2, bezier_x, bezier_y, FXPT_BEZIERTO);
}