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OpenBoard/thirdparty/xpdf/xpdf-3.02/xpdf/SplashOutputDev.cc

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//========================================================================
//
// SplashOutputDev.cc
//
// Copyright 2003 Glyph & Cog, LLC
//
//========================================================================
#include <aconf.h>
#ifdef USE_GCC_PRAGMAS
#pragma implementation
#endif
#include <string.h>
#include <math.h>
#include "gfile.h"
#include "GlobalParams.h"
#include "Error.h"
#include "Object.h"
#include "GfxFont.h"
#include "Link.h"
#include "CharCodeToUnicode.h"
#include "FontEncodingTables.h"
#include "FoFiTrueType.h"
#include "SplashBitmap.h"
#include "SplashGlyphBitmap.h"
#include "SplashPattern.h"
#include "SplashScreen.h"
#include "SplashPath.h"
#include "SplashState.h"
#include "SplashErrorCodes.h"
#include "SplashFontEngine.h"
#include "SplashFont.h"
#include "SplashFontFile.h"
#include "SplashFontFileID.h"
#include "Splash.h"
#include "SplashOutputDev.h"
#ifdef VMS
#if (__VMS_VER < 70000000)
extern "C" int unlink(char *filename);
#endif
#endif
//------------------------------------------------------------------------
// Divide a 16-bit value (in [0, 255*255]) by 255, returning an 8-bit result.
static inline Guchar div255(int x) {
return (Guchar)((x + (x >> 8) + 0x80) >> 8);
}
//------------------------------------------------------------------------
// Blend functions
//------------------------------------------------------------------------
static void splashOutBlendMultiply(SplashColorPtr src, SplashColorPtr dest,
SplashColorPtr blend, SplashColorMode cm) {
int i;
for (i = 0; i < splashColorModeNComps[cm]; ++i) {
blend[i] = (dest[i] * src[i]) / 255;
}
}
static void splashOutBlendScreen(SplashColorPtr src, SplashColorPtr dest,
SplashColorPtr blend, SplashColorMode cm) {
int i;
for (i = 0; i < splashColorModeNComps[cm]; ++i) {
blend[i] = dest[i] + src[i] - (dest[i] * src[i]) / 255;
}
}
static void splashOutBlendOverlay(SplashColorPtr src, SplashColorPtr dest,
SplashColorPtr blend, SplashColorMode cm) {
int i;
for (i = 0; i < splashColorModeNComps[cm]; ++i) {
blend[i] = dest[i] < 0x80
? (src[i] * 2 * dest[i]) / 255
: 255 - 2 * ((255 - src[i]) * (255 - dest[i])) / 255;
}
}
static void splashOutBlendDarken(SplashColorPtr src, SplashColorPtr dest,
SplashColorPtr blend, SplashColorMode cm) {
int i;
for (i = 0; i < splashColorModeNComps[cm]; ++i) {
blend[i] = dest[i] < src[i] ? dest[i] : src[i];
}
}
static void splashOutBlendLighten(SplashColorPtr src, SplashColorPtr dest,
SplashColorPtr blend, SplashColorMode cm) {
int i;
for (i = 0; i < splashColorModeNComps[cm]; ++i) {
blend[i] = dest[i] > src[i] ? dest[i] : src[i];
}
}
static void splashOutBlendColorDodge(SplashColorPtr src, SplashColorPtr dest,
SplashColorPtr blend,
SplashColorMode cm) {
int i, x;
for (i = 0; i < splashColorModeNComps[cm]; ++i) {
if (src[i] == 255) {
blend[i] = 255;
} else {
x = (dest[i] * 255) / (255 - src[i]);
blend[i] = x <= 255 ? x : 255;
}
}
}
static void splashOutBlendColorBurn(SplashColorPtr src, SplashColorPtr dest,
SplashColorPtr blend, SplashColorMode cm) {
int i, x;
for (i = 0; i < splashColorModeNComps[cm]; ++i) {
if (src[i] == 0) {
blend[i] = 0;
} else {
x = ((255 - dest[i]) * 255) / src[i];
blend[i] = x <= 255 ? 255 - x : 0;
}
}
}
static void splashOutBlendHardLight(SplashColorPtr src, SplashColorPtr dest,
SplashColorPtr blend, SplashColorMode cm) {
int i;
for (i = 0; i < splashColorModeNComps[cm]; ++i) {
blend[i] = src[i] < 0x80
? (dest[i] * 2 * src[i]) / 255
: 255 - 2 * ((255 - dest[i]) * (255 - src[i])) / 255;
}
}
static void splashOutBlendSoftLight(SplashColorPtr src, SplashColorPtr dest,
SplashColorPtr blend, SplashColorMode cm) {
int i, x;
for (i = 0; i < splashColorModeNComps[cm]; ++i) {
if (src[i] < 0x80) {
blend[i] = dest[i] - (255 - 2 * src[i]) * dest[i] * (255 - dest[i]) /
(255 * 255);
} else {
if (dest[i] < 0x40) {
x = (((((16 * dest[i] - 12 * 255) * dest[i]) / 255)
+ 4 * 255) * dest[i]) / 255;
} else {
x = (int)sqrt(255.0 * dest[i]);
}
blend[i] = dest[i] + (2 * src[i] - 255) * (x - dest[i]) / 255;
}
}
}
static void splashOutBlendDifference(SplashColorPtr src, SplashColorPtr dest,
SplashColorPtr blend,
SplashColorMode cm) {
int i;
for (i = 0; i < splashColorModeNComps[cm]; ++i) {
blend[i] = dest[i] < src[i] ? src[i] - dest[i] : dest[i] - src[i];
}
}
static void splashOutBlendExclusion(SplashColorPtr src, SplashColorPtr dest,
SplashColorPtr blend, SplashColorMode cm) {
int i;
for (i = 0; i < splashColorModeNComps[cm]; ++i) {
blend[i] = dest[i] + src[i] - (2 * dest[i] * src[i]) / 255;
}
}
static void cvtRGBToHSV(Guchar r, Guchar g, Guchar b, int *h, int *s, int *v) {
int cmax, cmid, cmin, x;
if (r >= g) {
if (g >= b) { x = 0; cmax = r; cmid = g; cmin = b; }
else if (b >= r) { x = 4; cmax = b; cmid = r; cmin = g; }
else { x = 5; cmax = r; cmid = b; cmin = g; }
} else {
if (r >= b) { x = 1; cmax = g; cmid = r; cmin = b; }
else if (g >= b) { x = 2; cmax = g; cmid = b; cmin = r; }
else { x = 3; cmax = b; cmid = g; cmin = r; }
}
if (cmax == cmin) {
*h = *s = 0;
} else {
*h = x * 60;
if (x & 1) {
*h += ((cmax - cmid) * 60) / (cmax - cmin);
} else {
*h += ((cmid - cmin) * 60) / (cmax - cmin);
}
*s = (255 * (cmax - cmin)) / cmax;
}
*v = cmax;
}
static void cvtHSVToRGB(int h, int s, int v, Guchar *r, Guchar *g, Guchar *b) {
int x, f, cmax, cmid, cmin;
if (s == 0) {
*r = *g = *b = v;
} else {
x = h / 60;
f = h % 60;
cmax = v;
if (x & 1) {
cmid = div255(v * 255 - ((s * f) / 60));
} else {
cmid = div255(v * (255 - ((s * (60 - f)) / 60)));
}
cmin = div255(v * (255 - s));
switch (x) {
case 0: *r = cmax; *g = cmid; *b = cmin; break;
case 1: *g = cmax; *r = cmid; *b = cmin; break;
case 2: *g = cmax; *b = cmid; *r = cmin; break;
case 3: *b = cmax; *g = cmid; *r = cmin; break;
case 4: *b = cmax; *r = cmid; *g = cmin; break;
case 5: *r = cmax; *b = cmid; *g = cmin; break;
}
}
}
static void splashOutBlendHue(SplashColorPtr src, SplashColorPtr dest,
SplashColorPtr blend, SplashColorMode cm) {
int hs, ss, vs, hd, sd, vd;
#if SPLASH_CMYK
Guchar r, g, b;
#endif
switch (cm) {
case splashModeMono1:
case splashModeMono8:
blend[0] = dest[0];
break;
case splashModeRGB8:
case splashModeBGR8:
cvtRGBToHSV(src[0], src[1], src[2], &hs, &ss, &vs);
cvtRGBToHSV(dest[0], dest[1], dest[2], &hd, &sd, &vd);
cvtHSVToRGB(hs, sd, vd, &blend[0], &blend[1], &blend[2]);
break;
#if SPLASH_CMYK
case splashModeCMYK8:
//~ (0xff - ...) should be clipped
cvtRGBToHSV(0xff - (src[0] + src[3]),
0xff - (src[1] + src[3]),
0xff - (src[2] + src[3]), &hs, &ss, &vs);
cvtRGBToHSV(0xff - (dest[0] + dest[3]),
0xff - (dest[1] + dest[3]),
0xff - (dest[2] + dest[3]), &hd, &sd, &vd);
cvtHSVToRGB(hs, sd, vd, &r, &g, &b);
//~ should do black generation
blend[0] = 0xff - r;
blend[1] = 0xff - g;
blend[2] = 0xff - b;
blend[3] = 0;
break;
#endif
}
}
static void splashOutBlendSaturation(SplashColorPtr src, SplashColorPtr dest,
SplashColorPtr blend,
SplashColorMode cm) {
int hs, ss, vs, hd, sd, vd;
#if SPLASH_CMYK
Guchar r, g, b;
#endif
switch (cm) {
case splashModeMono1:
case splashModeMono8:
blend[0] = dest[0];
break;
case splashModeRGB8:
case splashModeBGR8:
cvtRGBToHSV(src[0], src[1], src[2], &hs, &ss, &vs);
cvtRGBToHSV(dest[0], dest[1], dest[2], &hd, &sd, &vd);
cvtHSVToRGB(hd, ss, vd, &blend[0], &blend[1], &blend[2]);
break;
#if SPLASH_CMYK
case splashModeCMYK8:
//~ (0xff - ...) should be clipped
cvtRGBToHSV(0xff - (src[0] + src[3]),
0xff - (src[1] + src[3]),
0xff - (src[2] + src[3]), &hs, &ss, &vs);
cvtRGBToHSV(0xff - (dest[0] + dest[3]),
0xff - (dest[1] + dest[3]),
0xff - (dest[2] + dest[3]), &hd, &sd, &vd);
cvtHSVToRGB(hd, ss, vd, &r, &g, &b);
//~ should do black generation
blend[0] = 0xff - r;
blend[1] = 0xff - g;
blend[2] = 0xff - b;
blend[3] = 0;
break;
#endif
}
}
static void splashOutBlendColor(SplashColorPtr src, SplashColorPtr dest,
SplashColorPtr blend, SplashColorMode cm) {
int hs, ss, vs, hd, sd, vd;
#if SPLASH_CMYK
Guchar r, g, b;
#endif
switch (cm) {
case splashModeMono1:
case splashModeMono8:
blend[0] = dest[0];
break;
case splashModeRGB8:
case splashModeBGR8:
cvtRGBToHSV(src[0], src[1], src[2], &hs, &ss, &vs);
cvtRGBToHSV(dest[0], dest[1], dest[2], &hd, &sd, &vd);
cvtHSVToRGB(hs, ss, vd, &blend[0], &blend[1], &blend[2]);
break;
#if SPLASH_CMYK
case splashModeCMYK8:
//~ (0xff - ...) should be clipped
cvtRGBToHSV(0xff - (src[0] + src[3]),
0xff - (src[1] + src[3]),
0xff - (src[2] + src[3]), &hs, &ss, &vs);
cvtRGBToHSV(0xff - (dest[0] + dest[3]),
0xff - (dest[1] + dest[3]),
0xff - (dest[2] + dest[3]), &hd, &sd, &vd);
cvtHSVToRGB(hs, ss, vd, &r, &g, &b);
//~ should do black generation
blend[0] = 0xff - r;
blend[1] = 0xff - g;
blend[2] = 0xff - b;
blend[3] = 0;
break;
#endif
}
}
static void splashOutBlendLuminosity(SplashColorPtr src, SplashColorPtr dest,
SplashColorPtr blend,
SplashColorMode cm) {
int hs, ss, vs, hd, sd, vd;
#if SPLASH_CMYK
Guchar r, g, b;
#endif
switch (cm) {
case splashModeMono1:
case splashModeMono8:
blend[0] = dest[0];
break;
case splashModeRGB8:
case splashModeBGR8:
cvtRGBToHSV(src[0], src[1], src[2], &hs, &ss, &vs);
cvtRGBToHSV(dest[0], dest[1], dest[2], &hd, &sd, &vd);
cvtHSVToRGB(hd, sd, vs, &blend[0], &blend[1], &blend[2]);
break;
#if SPLASH_CMYK
case splashModeCMYK8:
//~ (0xff - ...) should be clipped
cvtRGBToHSV(0xff - (src[0] + src[3]),
0xff - (src[1] + src[3]),
0xff - (src[2] + src[3]), &hs, &ss, &vs);
cvtRGBToHSV(0xff - (dest[0] + dest[3]),
0xff - (dest[1] + dest[3]),
0xff - (dest[2] + dest[3]), &hd, &sd, &vd);
cvtHSVToRGB(hd, sd, vs, &r, &g, &b);
//~ should do black generation
blend[0] = 0xff - r;
blend[1] = 0xff - g;
blend[2] = 0xff - b;
blend[3] = 0;
break;
#endif
}
}
// NB: This must match the GfxBlendMode enum defined in GfxState.h.
SplashBlendFunc splashOutBlendFuncs[] = {
NULL,
&splashOutBlendMultiply,
&splashOutBlendScreen,
&splashOutBlendOverlay,
&splashOutBlendDarken,
&splashOutBlendLighten,
&splashOutBlendColorDodge,
&splashOutBlendColorBurn,
&splashOutBlendHardLight,
&splashOutBlendSoftLight,
&splashOutBlendDifference,
&splashOutBlendExclusion,
&splashOutBlendHue,
&splashOutBlendSaturation,
&splashOutBlendColor,
&splashOutBlendLuminosity
};
//------------------------------------------------------------------------
// Font substitutions
//------------------------------------------------------------------------
struct SplashOutFontSubst {
char *name;
double mWidth;
};
// index: {symbolic:12, fixed:8, serif:4, sans-serif:0} + bold*2 + italic
static SplashOutFontSubst splashOutSubstFonts[16] = {
{"Helvetica", 0.833},
{"Helvetica-Oblique", 0.833},
{"Helvetica-Bold", 0.889},
{"Helvetica-BoldOblique", 0.889},
{"Times-Roman", 0.788},
{"Times-Italic", 0.722},
{"Times-Bold", 0.833},
{"Times-BoldItalic", 0.778},
{"Courier", 0.600},
{"Courier-Oblique", 0.600},
{"Courier-Bold", 0.600},
{"Courier-BoldOblique", 0.600},
{"Symbol", 0.576},
{"Symbol", 0.576},
{"Symbol", 0.576},
{"Symbol", 0.576}
};
//------------------------------------------------------------------------
// SplashOutFontFileID
//------------------------------------------------------------------------
class SplashOutFontFileID: public SplashFontFileID {
public:
SplashOutFontFileID(Ref *rA) { r = *rA; substIdx = -1; }
~SplashOutFontFileID() {}
GBool matches(SplashFontFileID *id) {
return ((SplashOutFontFileID *)id)->r.num == r.num &&
((SplashOutFontFileID *)id)->r.gen == r.gen;
}
void setSubstIdx(int substIdxA) { substIdx = substIdxA; }
int getSubstIdx() { return substIdx; }
private:
Ref r;
int substIdx;
};
//------------------------------------------------------------------------
// T3FontCache
//------------------------------------------------------------------------
struct T3FontCacheTag {
Gushort code;
Gushort mru; // valid bit (0x8000) and MRU index
};
class T3FontCache {
public:
T3FontCache(Ref *fontID, double m11A, double m12A,
double m21A, double m22A,
int glyphXA, int glyphYA, int glyphWA, int glyphHA,
GBool aa, GBool validBBoxA);
~T3FontCache();
GBool matches(Ref *idA, double m11A, double m12A,
double m21A, double m22A)
{ return fontID.num == idA->num && fontID.gen == idA->gen &&
m11 == m11A && m12 == m12A && m21 == m21A && m22 == m22A; }
Ref fontID; // PDF font ID
double m11, m12, m21, m22; // transform matrix
int glyphX, glyphY; // pixel offset of glyph bitmaps
int glyphW, glyphH; // size of glyph bitmaps, in pixels
GBool validBBox; // false if the bbox was [0 0 0 0]
int glyphSize; // size of glyph bitmaps, in bytes
int cacheSets; // number of sets in cache
int cacheAssoc; // cache associativity (glyphs per set)
Guchar *cacheData; // glyph pixmap cache
T3FontCacheTag *cacheTags; // cache tags, i.e., char codes
};
T3FontCache::T3FontCache(Ref *fontIDA, double m11A, double m12A,
double m21A, double m22A,
int glyphXA, int glyphYA, int glyphWA, int glyphHA,
GBool validBBoxA, GBool aa) {
int i;
fontID = *fontIDA;
m11 = m11A;
m12 = m12A;
m21 = m21A;
m22 = m22A;
glyphX = glyphXA;
glyphY = glyphYA;
glyphW = glyphWA;
glyphH = glyphHA;
validBBox = validBBoxA;
if (aa) {
glyphSize = glyphW * glyphH;
} else {
glyphSize = ((glyphW + 7) >> 3) * glyphH;
}
cacheAssoc = 8;
if (glyphSize <= 256) {
cacheSets = 8;
} else if (glyphSize <= 512) {
cacheSets = 4;
} else if (glyphSize <= 1024) {
cacheSets = 2;
} else {
cacheSets = 1;
}
cacheData = (Guchar *)gmallocn(cacheSets * cacheAssoc, glyphSize);
cacheTags = (T3FontCacheTag *)gmallocn(cacheSets * cacheAssoc,
sizeof(T3FontCacheTag));
for (i = 0; i < cacheSets * cacheAssoc; ++i) {
cacheTags[i].mru = i & (cacheAssoc - 1);
}
}
T3FontCache::~T3FontCache() {
gfree(cacheData);
gfree(cacheTags);
}
struct T3GlyphStack {
Gushort code; // character code
//----- cache info
T3FontCache *cache; // font cache for the current font
T3FontCacheTag *cacheTag; // pointer to cache tag for the glyph
Guchar *cacheData; // pointer to cache data for the glyph
//----- saved state
SplashBitmap *origBitmap;
Splash *origSplash;
double origCTM4, origCTM5;
T3GlyphStack *next; // next object on stack
};
//------------------------------------------------------------------------
// SplashTransparencyGroup
//------------------------------------------------------------------------
struct SplashTransparencyGroup {
int tx, ty; // translation coordinates
SplashBitmap *tBitmap; // bitmap for transparency group
GfxColorSpace *blendingColorSpace;
GBool isolated;
//----- saved state
SplashBitmap *origBitmap;
Splash *origSplash;
SplashTransparencyGroup *next;
};
//------------------------------------------------------------------------
// SplashOutputDev
//------------------------------------------------------------------------
SplashOutputDev::SplashOutputDev(SplashColorMode colorModeA,
int bitmapRowPadA,
GBool reverseVideoA,
SplashColorPtr paperColorA,
GBool bitmapTopDownA,
GBool allowAntialiasA) {
colorMode = colorModeA;
bitmapRowPad = bitmapRowPadA;
bitmapTopDown = bitmapTopDownA;
allowAntialias = allowAntialiasA;
vectorAntialias = allowAntialias &&
globalParams->getVectorAntialias() &&
colorMode != splashModeMono1;
setupScreenParams(72.0, 72.0);
reverseVideo = reverseVideoA;
splashColorCopy(paperColor, paperColorA);
xref = NULL;
bitmap = new SplashBitmap(1, 1, bitmapRowPad, colorMode,
colorMode != splashModeMono1, bitmapTopDown);
splash = new Splash(bitmap, vectorAntialias, &screenParams);
splash->clear(paperColor, 0);
fontEngine = NULL;
nT3Fonts = 0;
t3GlyphStack = NULL;
font = NULL;
needFontUpdate = gFalse;
textClipPath = NULL;
transpGroupStack = NULL;
}
void SplashOutputDev::setupScreenParams(double hDPI, double vDPI) {
screenParams.size = globalParams->getScreenSize();
screenParams.dotRadius = globalParams->getScreenDotRadius();
screenParams.gamma = (SplashCoord)globalParams->getScreenGamma();
screenParams.blackThreshold =
(SplashCoord)globalParams->getScreenBlackThreshold();
screenParams.whiteThreshold =
(SplashCoord)globalParams->getScreenWhiteThreshold();
switch (globalParams->getScreenType()) {
case screenDispersed:
screenParams.type = splashScreenDispersed;
if (screenParams.size < 0) {
screenParams.size = 4;
}
break;
case screenClustered:
screenParams.type = splashScreenClustered;
if (screenParams.size < 0) {
screenParams.size = 10;
}
break;
case screenStochasticClustered:
screenParams.type = splashScreenStochasticClustered;
if (screenParams.size < 0) {
screenParams.size = 100;
}
if (screenParams.dotRadius < 0) {
screenParams.dotRadius = 2;
}
break;
case screenUnset:
default:
// use clustered dithering for resolution >= 300 dpi
// (compare to 299.9 to avoid floating point issues)
if (hDPI > 299.9 && vDPI > 299.9) {
screenParams.type = splashScreenStochasticClustered;
if (screenParams.size < 0) {
screenParams.size = 100;
}
if (screenParams.dotRadius < 0) {
screenParams.dotRadius = 2;
}
} else {
screenParams.type = splashScreenDispersed;
if (screenParams.size < 0) {
screenParams.size = 4;
}
}
}
}
SplashOutputDev::~SplashOutputDev() {
int i;
for (i = 0; i < nT3Fonts; ++i) {
delete t3FontCache[i];
}
if (fontEngine) {
delete fontEngine;
}
if (splash) {
delete splash;
}
if (bitmap) {
delete bitmap;
}
}
void SplashOutputDev::startDoc(XRef *xrefA) {
int i;
xref = xrefA;
if (fontEngine) {
delete fontEngine;
}
fontEngine = new SplashFontEngine(
#if HAVE_T1LIB_H
globalParams->getEnableT1lib(),
#endif
#if HAVE_FREETYPE_FREETYPE_H || HAVE_FREETYPE_H
globalParams->getEnableFreeType(),
#endif
allowAntialias &&
globalParams->getAntialias() &&
colorMode != splashModeMono1);
for (i = 0; i < nT3Fonts; ++i) {
delete t3FontCache[i];
}
nT3Fonts = 0;
}
void SplashOutputDev::startPage(int pageNum, GfxState *state) {
int w, h;
double *ctm;
SplashCoord mat[6];
SplashColor color;
if (state) {
setupScreenParams(state->getHDPI(), state->getVDPI());
w = (int)(state->getPageWidth() + 0.5);
if (w <= 0) {
w = 1;
}
h = (int)(state->getPageHeight() + 0.5);
if (h <= 0) {
h = 1;
}
} else {
w = h = 1;
}
if (splash) {
delete splash;
}
if (!bitmap || w != bitmap->getWidth() || h != bitmap->getHeight()) {
if (bitmap) {
delete bitmap;
}
bitmap = new SplashBitmap(w, h, bitmapRowPad, colorMode,
colorMode != splashModeMono1, bitmapTopDown);
}
splash = new Splash(bitmap, vectorAntialias, &screenParams);
if (state) {
ctm = state->getCTM();
mat[0] = (SplashCoord)ctm[0];
mat[1] = (SplashCoord)ctm[1];
mat[2] = (SplashCoord)ctm[2];
mat[3] = (SplashCoord)ctm[3];
mat[4] = (SplashCoord)ctm[4];
mat[5] = (SplashCoord)ctm[5];
splash->setMatrix(mat);
}
switch (colorMode) {
case splashModeMono1:
case splashModeMono8:
color[0] = 0;
break;
case splashModeRGB8:
case splashModeBGR8:
color[0] = color[1] = color[2] = 0;
break;
#if SPLASH_CMYK
case splashModeCMYK8:
color[0] = color[1] = color[2] = color[3] = 0;
break;
#endif
}
splash->setStrokePattern(new SplashSolidColor(color));
splash->setFillPattern(new SplashSolidColor(color));
splash->setLineCap(splashLineCapButt);
splash->setLineJoin(splashLineJoinMiter);
splash->setLineDash(NULL, 0, 0);
splash->setMiterLimit(10);
splash->setFlatness(1);
// the SA parameter supposedly defaults to false, but Acrobat
// apparently hardwires it to true
splash->setStrokeAdjust(globalParams->getStrokeAdjust());
splash->clear(paperColor, 0);
}
void SplashOutputDev::endPage() {
if (colorMode != splashModeMono1) {
splash->compositeBackground(paperColor);
}
}
void SplashOutputDev::saveState(GfxState *state) {
splash->saveState();
}
void SplashOutputDev::restoreState(GfxState *state) {
splash->restoreState();
needFontUpdate = gTrue;
}
void SplashOutputDev::updateAll(GfxState *state) {
updateLineDash(state);
updateLineJoin(state);
updateLineCap(state);
updateLineWidth(state);
updateFlatness(state);
updateMiterLimit(state);
updateStrokeAdjust(state);
updateFillColor(state);
updateStrokeColor(state);
needFontUpdate = gTrue;
}
void SplashOutputDev::updateCTM(GfxState *state, double m11, double m12,
double m21, double m22,
double m31, double m32) {
double *ctm;
SplashCoord mat[6];
ctm = state->getCTM();
mat[0] = (SplashCoord)ctm[0];
mat[1] = (SplashCoord)ctm[1];
mat[2] = (SplashCoord)ctm[2];
mat[3] = (SplashCoord)ctm[3];
mat[4] = (SplashCoord)ctm[4];
mat[5] = (SplashCoord)ctm[5];
splash->setMatrix(mat);
}
void SplashOutputDev::updateLineDash(GfxState *state) {
double *dashPattern;
int dashLength;
double dashStart;
SplashCoord dash[20];
int i;
state->getLineDash(&dashPattern, &dashLength, &dashStart);
if (dashLength > 20) {
dashLength = 20;
}
for (i = 0; i < dashLength; ++i) {
dash[i] = (SplashCoord)dashPattern[i];
if (dash[i] < 0) {
dash[i] = 0;
}
}
splash->setLineDash(dash, dashLength, (SplashCoord)dashStart);
}
void SplashOutputDev::updateFlatness(GfxState *state) {
splash->setFlatness(state->getFlatness());
}
void SplashOutputDev::updateLineJoin(GfxState *state) {
splash->setLineJoin(state->getLineJoin());
}
void SplashOutputDev::updateLineCap(GfxState *state) {
splash->setLineCap(state->getLineCap());
}
void SplashOutputDev::updateMiterLimit(GfxState *state) {
splash->setMiterLimit(state->getMiterLimit());
}
void SplashOutputDev::updateLineWidth(GfxState *state) {
splash->setLineWidth(state->getLineWidth());
}
void SplashOutputDev::updateStrokeAdjust(GfxState *state) {
#if 0 // the SA parameter supposedly defaults to false, but Acrobat
// apparently hardwires it to true
splash->setStrokeAdjust(state->getStrokeAdjust());
#endif
}
void SplashOutputDev::updateFillColor(GfxState *state) {
GfxGray gray;
GfxRGB rgb;
#if SPLASH_CMYK
GfxCMYK cmyk;
#endif
state->getFillGray(&gray);
state->getFillRGB(&rgb);
#if SPLASH_CMYK
state->getFillCMYK(&cmyk);
splash->setFillPattern(getColor(gray, &rgb, &cmyk));
#else
splash->setFillPattern(getColor(gray, &rgb));
#endif
}
void SplashOutputDev::updateStrokeColor(GfxState *state) {
GfxGray gray;
GfxRGB rgb;
#if SPLASH_CMYK
GfxCMYK cmyk;
#endif
state->getStrokeGray(&gray);
state->getStrokeRGB(&rgb);
#if SPLASH_CMYK
state->getStrokeCMYK(&cmyk);
splash->setStrokePattern(getColor(gray, &rgb, &cmyk));
#else
splash->setStrokePattern(getColor(gray, &rgb));
#endif
}
#if SPLASH_CMYK
SplashPattern *SplashOutputDev::getColor(GfxGray gray, GfxRGB *rgb,
GfxCMYK *cmyk) {
#else
SplashPattern *SplashOutputDev::getColor(GfxGray gray, GfxRGB *rgb) {
#endif
SplashPattern *pattern;
SplashColor color;
GfxColorComp r, g, b;
if (reverseVideo) {
gray = gfxColorComp1 - gray;
r = gfxColorComp1 - rgb->r;
g = gfxColorComp1 - rgb->g;
b = gfxColorComp1 - rgb->b;
} else {
r = rgb->r;
g = rgb->g;
b = rgb->b;
}
pattern = NULL; // make gcc happy
switch (colorMode) {
case splashModeMono1:
case splashModeMono8:
color[0] = colToByte(gray);
pattern = new SplashSolidColor(color);
break;
case splashModeRGB8:
case splashModeBGR8:
color[0] = colToByte(r);
color[1] = colToByte(g);
color[2] = colToByte(b);
pattern = new SplashSolidColor(color);
break;
#if SPLASH_CMYK
case splashModeCMYK8:
color[0] = colToByte(cmyk->c);
color[1] = colToByte(cmyk->m);
color[2] = colToByte(cmyk->y);
color[3] = colToByte(cmyk->k);
pattern = new SplashSolidColor(color);
break;
#endif
}
return pattern;
}
void SplashOutputDev::updateBlendMode(GfxState *state) {
splash->setBlendFunc(splashOutBlendFuncs[state->getBlendMode()]);
}
void SplashOutputDev::updateFillOpacity(GfxState *state) {
splash->setFillAlpha((SplashCoord)state->getFillOpacity());
}
void SplashOutputDev::updateStrokeOpacity(GfxState *state) {
splash->setStrokeAlpha((SplashCoord)state->getStrokeOpacity());
}
void SplashOutputDev::updateFont(GfxState *state) {
needFontUpdate = gTrue;
}
void SplashOutputDev::doUpdateFont(GfxState *state) {
GfxFont *gfxFont;
GfxFontType fontType;
SplashOutFontFileID *id;
SplashFontFile *fontFile;
FoFiTrueType *ff;
Ref embRef;
Object refObj, strObj;
GString *tmpFileName, *fileName, *substName;
FILE *tmpFile;
Gushort *codeToGID;
DisplayFontParam *dfp;
CharCodeToUnicode *ctu;
double *textMat;
double m11, m12, m21, m22, w1, w2, fontSize;
SplashCoord mat[4];
char *name;
Unicode uBuf[8];
int c, substIdx, n, code, cmap;
needFontUpdate = gFalse;
font = NULL;
tmpFileName = NULL;
substIdx = -1;
dfp = NULL;
if (!(gfxFont = state->getFont())) {
goto err1;
}
fontType = gfxFont->getType();
if (fontType == fontType3) {
goto err1;
}
// check the font file cache
id = new SplashOutFontFileID(gfxFont->getID());
if ((fontFile = fontEngine->getFontFile(id))) {
delete id;
} else {
// if there is an embedded font, write it to disk
if (gfxFont->getEmbeddedFontID(&embRef)) {
if (!openTempFile(&tmpFileName, &tmpFile, "wb", NULL)) {
error(-1, "Couldn't create temporary font file");
goto err2;
}
refObj.initRef(embRef.num, embRef.gen);
refObj.fetch(xref, &strObj);
refObj.free();
if (!strObj.isStream()) {
error(-1, "Embedded font object is wrong type");
strObj.free();
fclose(tmpFile);
goto err2;
}
strObj.streamReset();
while ((c = strObj.streamGetChar()) != EOF) {
fputc(c, tmpFile);
}
strObj.streamClose();
strObj.free();
fclose(tmpFile);
fileName = tmpFileName;
// if there is an external font file, use it
} else if (!(fileName = gfxFont->getExtFontFile())) {
// look for a display font mapping or a substitute font
if (gfxFont->isCIDFont()) {
if (((GfxCIDFont *)gfxFont)->getCollection()) {
dfp = globalParams->
getDisplayCIDFont(gfxFont->getName(),
((GfxCIDFont *)gfxFont)->getCollection());
}
} else {
if (gfxFont->getName()) {
dfp = globalParams->getDisplayFont(gfxFont->getName());
}
if (!dfp) {
// 8-bit font substitution
if (gfxFont->isFixedWidth()) {
substIdx = 8;
} else if (gfxFont->isSerif()) {
substIdx = 4;
} else {
substIdx = 0;
}
if (gfxFont->isBold()) {
substIdx += 2;
}
if (gfxFont->isItalic()) {
substIdx += 1;
}
substName = new GString(splashOutSubstFonts[substIdx].name);
dfp = globalParams->getDisplayFont(substName);
delete substName;
id->setSubstIdx(substIdx);
}
}
if (!dfp) {
error(-1, "Couldn't find a font for '%s'",
gfxFont->getName() ? gfxFont->getName()->getCString()
: "(unnamed)");
goto err2;
}
switch (dfp->kind) {
case displayFontT1:
fileName = dfp->t1.fileName;
fontType = gfxFont->isCIDFont() ? fontCIDType0 : fontType1;
break;
case displayFontTT:
fileName = dfp->tt.fileName;
fontType = gfxFont->isCIDFont() ? fontCIDType2 : fontTrueType;
break;
}
}
// load the font file
switch (fontType) {
case fontType1:
if (!(fontFile = fontEngine->loadType1Font(
id,
fileName->getCString(),
fileName == tmpFileName,
((Gfx8BitFont *)gfxFont)->getEncoding()))) {
error(-1, "Couldn't create a font for '%s'",
gfxFont->getName() ? gfxFont->getName()->getCString()
: "(unnamed)");
goto err2;
}
break;
case fontType1C:
if (!(fontFile = fontEngine->loadType1CFont(
id,
fileName->getCString(),
fileName == tmpFileName,
((Gfx8BitFont *)gfxFont)->getEncoding()))) {
error(-1, "Couldn't create a font for '%s'",
gfxFont->getName() ? gfxFont->getName()->getCString()
: "(unnamed)");
goto err2;
}
break;
case fontType1COT:
if (!(fontFile = fontEngine->loadOpenTypeT1CFont(
id,
fileName->getCString(),
fileName == tmpFileName,
((Gfx8BitFont *)gfxFont)->getEncoding()))) {
error(-1, "Couldn't create a font for '%s'",
gfxFont->getName() ? gfxFont->getName()->getCString()
: "(unnamed)");
goto err2;
}
break;
case fontTrueType:
case fontTrueTypeOT:
if ((ff = FoFiTrueType::load(fileName->getCString()))) {
codeToGID = ((Gfx8BitFont *)gfxFont)->getCodeToGIDMap(ff);
n = 256;
delete ff;
} else {
codeToGID = NULL;
n = 0;
}
if (!(fontFile = fontEngine->loadTrueTypeFont(
id,
fileName->getCString(),
fileName == tmpFileName,
codeToGID, n))) {
error(-1, "Couldn't create a font for '%s'",
gfxFont->getName() ? gfxFont->getName()->getCString()
: "(unnamed)");
goto err2;
}
break;
case fontCIDType0:
case fontCIDType0C:
if (!(fontFile = fontEngine->loadCIDFont(
id,
fileName->getCString(),
fileName == tmpFileName))) {
error(-1, "Couldn't create a font for '%s'",
gfxFont->getName() ? gfxFont->getName()->getCString()
: "(unnamed)");
goto err2;
}
break;
case fontCIDType0COT:
if (!(fontFile = fontEngine->loadOpenTypeCFFFont(
id,
fileName->getCString(),
fileName == tmpFileName))) {
error(-1, "Couldn't create a font for '%s'",
gfxFont->getName() ? gfxFont->getName()->getCString()
: "(unnamed)");
goto err2;
}
break;
case fontCIDType2:
case fontCIDType2OT:
codeToGID = NULL;
n = 0;
if (dfp) {
// create a CID-to-GID mapping, via Unicode
if ((ctu = ((GfxCIDFont *)gfxFont)->getToUnicode())) {
if ((ff = FoFiTrueType::load(fileName->getCString()))) {
// look for a Unicode cmap
for (cmap = 0; cmap < ff->getNumCmaps(); ++cmap) {
if ((ff->getCmapPlatform(cmap) == 3 &&
ff->getCmapEncoding(cmap) == 1) ||
ff->getCmapPlatform(cmap) == 0) {
break;
}
}
if (cmap < ff->getNumCmaps()) {
// map CID -> Unicode -> GID
n = ctu->getLength();
codeToGID = (Gushort *)gmallocn(n, sizeof(Gushort));
for (code = 0; code < n; ++code) {
if (ctu->mapToUnicode(code, uBuf, 8) > 0) {
codeToGID[code] = ff->mapCodeToGID(cmap, uBuf[0]);
} else {
codeToGID[code] = 0;
}
}
}
delete ff;
}
ctu->decRefCnt();
} else {
error(-1, "Couldn't find a mapping to Unicode for font '%s'",
gfxFont->getName() ? gfxFont->getName()->getCString()
: "(unnamed)");
}
} else {
if (((GfxCIDFont *)gfxFont)->getCIDToGID()) {
n = ((GfxCIDFont *)gfxFont)->getCIDToGIDLen();
codeToGID = (Gushort *)gmallocn(n, sizeof(Gushort));
memcpy(codeToGID, ((GfxCIDFont *)gfxFont)->getCIDToGID(),
n * sizeof(Gushort));
}
}
if (!(fontFile = fontEngine->loadTrueTypeFont(
id,
fileName->getCString(),
fileName == tmpFileName,
codeToGID, n))) {
error(-1, "Couldn't create a font for '%s'",
gfxFont->getName() ? gfxFont->getName()->getCString()
: "(unnamed)");
goto err2;
}
break;
default:
// this shouldn't happen
goto err2;
}
}
// get the font matrix
textMat = state->getTextMat();
fontSize = state->getFontSize();
m11 = textMat[0] * fontSize * state->getHorizScaling();
m12 = textMat[1] * fontSize * state->getHorizScaling();
m21 = textMat[2] * fontSize;
m22 = textMat[3] * fontSize;
// for substituted fonts: adjust the font matrix -- compare the
// width of 'm' in the original font and the substituted font
substIdx = ((SplashOutFontFileID *)fontFile->getID())->getSubstIdx();
if (substIdx >= 0) {
for (code = 0; code < 256; ++code) {
if ((name = ((Gfx8BitFont *)gfxFont)->getCharName(code)) &&
name[0] == 'm' && name[1] == '\0') {
break;
}
}
if (code < 256) {
w1 = ((Gfx8BitFont *)gfxFont)->getWidth(code);
w2 = splashOutSubstFonts[substIdx].mWidth;
if (!gfxFont->isSymbolic()) {
// if real font is substantially narrower than substituted
// font, reduce the font size accordingly
if (w1 > 0.01 && w1 < 0.9 * w2) {
w1 /= w2;
m11 *= w1;
m21 *= w1;
}
}
}
}
// create the scaled font
mat[0] = m11; mat[1] = m12;
mat[2] = m21; mat[3] = m22;
font = fontEngine->getFont(fontFile, mat, splash->getMatrix());
if (tmpFileName) {
delete tmpFileName;
}
return;
err2:
delete id;
err1:
if (tmpFileName) {
unlink(tmpFileName->getCString());
delete tmpFileName;
}
return;
}
void SplashOutputDev::stroke(GfxState *state) {
SplashPath *path;
if (state->getStrokeColorSpace()->isNonMarking()) {
return;
}
path = convertPath(state, state->getPath());
splash->stroke(path);
delete path;
}
void SplashOutputDev::fill(GfxState *state) {
SplashPath *path;
if (state->getFillColorSpace()->isNonMarking()) {
return;
}
path = convertPath(state, state->getPath());
splash->fill(path, gFalse);
delete path;
}
void SplashOutputDev::eoFill(GfxState *state) {
SplashPath *path;
if (state->getFillColorSpace()->isNonMarking()) {
return;
}
path = convertPath(state, state->getPath());
splash->fill(path, gTrue);
delete path;
}
void SplashOutputDev::clip(GfxState *state) {
SplashPath *path;
path = convertPath(state, state->getPath());
splash->clipToPath(path, gFalse);
delete path;
}
void SplashOutputDev::eoClip(GfxState *state) {
SplashPath *path;
path = convertPath(state, state->getPath());
splash->clipToPath(path, gTrue);
delete path;
}
void SplashOutputDev::clipToStrokePath(GfxState *state) {
SplashPath *path, *path2;
path = convertPath(state, state->getPath());
path2 = splash->makeStrokePath(path);
delete path;
splash->clipToPath(path2, gFalse);
delete path2;
}
SplashPath *SplashOutputDev::convertPath(GfxState *state, GfxPath *path) {
SplashPath *sPath;
GfxSubpath *subpath;
int i, j;
sPath = new SplashPath();
for (i = 0; i < path->getNumSubpaths(); ++i) {
subpath = path->getSubpath(i);
if (subpath->getNumPoints() > 0) {
sPath->moveTo((SplashCoord)subpath->getX(0),
(SplashCoord)subpath->getY(0));
j = 1;
while (j < subpath->getNumPoints()) {
if (subpath->getCurve(j)) {
sPath->curveTo((SplashCoord)subpath->getX(j),
(SplashCoord)subpath->getY(j),
(SplashCoord)subpath->getX(j+1),
(SplashCoord)subpath->getY(j+1),
(SplashCoord)subpath->getX(j+2),
(SplashCoord)subpath->getY(j+2));
j += 3;
} else {
sPath->lineTo((SplashCoord)subpath->getX(j),
(SplashCoord)subpath->getY(j));
++j;
}
}
if (subpath->isClosed()) {
sPath->close();
}
}
}
return sPath;
}
void SplashOutputDev::drawChar(GfxState *state, double x, double y,
double dx, double dy,
double originX, double originY,
CharCode code, int nBytes,
Unicode *u, int uLen) {
SplashPath *path;
int render;
// check for invisible text -- this is used by Acrobat Capture
render = state->getRender();
if (render == 3) {
return;
}
if (needFontUpdate) {
doUpdateFont(state);
}
if (!font) {
return;
}
x -= originX;
y -= originY;
// fill
if (!(render & 1)) {
if (!state->getFillColorSpace()->isNonMarking()) {
splash->fillChar((SplashCoord)x, (SplashCoord)y, code, font);
}
}
// stroke
if ((render & 3) == 1 || (render & 3) == 2) {
if (!state->getStrokeColorSpace()->isNonMarking()) {
if ((path = font->getGlyphPath(code))) {
path->offset((SplashCoord)x, (SplashCoord)y);
splash->stroke(path);
delete path;
}
}
}
// clip
if (render & 4) {
if ((path = font->getGlyphPath(code))) {
path->offset((SplashCoord)x, (SplashCoord)y);
if (textClipPath) {
textClipPath->append(path);
delete path;
} else {
textClipPath = path;
}
}
}
}
GBool SplashOutputDev::beginType3Char(GfxState *state, double x, double y,
double dx, double dy,
CharCode code, Unicode *u, int uLen) {
GfxFont *gfxFont;
Ref *fontID;
double *ctm, *bbox;
T3FontCache *t3Font;
T3GlyphStack *t3gs;
GBool validBBox;
double x1, y1, xMin, yMin, xMax, yMax, xt, yt;
int i, j;
if (!(gfxFont = state->getFont())) {
return gFalse;
}
fontID = gfxFont->getID();
ctm = state->getCTM();
state->transform(0, 0, &xt, &yt);
// is it the first (MRU) font in the cache?
if (!(nT3Fonts > 0 &&
t3FontCache[0]->matches(fontID, ctm[0], ctm[1], ctm[2], ctm[3]))) {
// is the font elsewhere in the cache?
for (i = 1; i < nT3Fonts; ++i) {
if (t3FontCache[i]->matches(fontID, ctm[0], ctm[1], ctm[2], ctm[3])) {
t3Font = t3FontCache[i];
for (j = i; j > 0; --j) {
t3FontCache[j] = t3FontCache[j - 1];
}
t3FontCache[0] = t3Font;
break;
}
}
if (i >= nT3Fonts) {
// create new entry in the font cache
if (nT3Fonts == splashOutT3FontCacheSize) {
delete t3FontCache[nT3Fonts - 1];
--nT3Fonts;
}
for (j = nT3Fonts; j > 0; --j) {
t3FontCache[j] = t3FontCache[j - 1];
}
++nT3Fonts;
bbox = gfxFont->getFontBBox();
if (bbox[0] == 0 && bbox[1] == 0 && bbox[2] == 0 && bbox[3] == 0) {
// unspecified bounding box -- just take a guess
xMin = xt - 5;
xMax = xMin + 30;
yMax = yt + 15;
yMin = yMax - 45;
validBBox = gFalse;
} else {
state->transform(bbox[0], bbox[1], &x1, &y1);
xMin = xMax = x1;
yMin = yMax = y1;
state->transform(bbox[0], bbox[3], &x1, &y1);
if (x1 < xMin) {
xMin = x1;
} else if (x1 > xMax) {
xMax = x1;
}
if (y1 < yMin) {
yMin = y1;
} else if (y1 > yMax) {
yMax = y1;
}
state->transform(bbox[2], bbox[1], &x1, &y1);
if (x1 < xMin) {
xMin = x1;
} else if (x1 > xMax) {
xMax = x1;
}
if (y1 < yMin) {
yMin = y1;
} else if (y1 > yMax) {
yMax = y1;
}
state->transform(bbox[2], bbox[3], &x1, &y1);
if (x1 < xMin) {
xMin = x1;
} else if (x1 > xMax) {
xMax = x1;
}
if (y1 < yMin) {
yMin = y1;
} else if (y1 > yMax) {
yMax = y1;
}
validBBox = gTrue;
}
t3FontCache[0] = new T3FontCache(fontID, ctm[0], ctm[1], ctm[2], ctm[3],
(int)floor(xMin - xt),
(int)floor(yMin - yt),
(int)ceil(xMax) - (int)floor(xMin) + 3,
(int)ceil(yMax) - (int)floor(yMin) + 3,
validBBox,
colorMode != splashModeMono1);
}
}
t3Font = t3FontCache[0];
// is the glyph in the cache?
i = (code & (t3Font->cacheSets - 1)) * t3Font->cacheAssoc;
for (j = 0; j < t3Font->cacheAssoc; ++j) {
if ((t3Font->cacheTags[i+j].mru & 0x8000) &&
t3Font->cacheTags[i+j].code == code) {
drawType3Glyph(t3Font, &t3Font->cacheTags[i+j],
t3Font->cacheData + (i+j) * t3Font->glyphSize);
return gTrue;
}
}
// push a new Type 3 glyph record
t3gs = new T3GlyphStack();
t3gs->next = t3GlyphStack;
t3GlyphStack = t3gs;
t3GlyphStack->code = code;
t3GlyphStack->cache = t3Font;
t3GlyphStack->cacheTag = NULL;
t3GlyphStack->cacheData = NULL;
return gFalse;
}
void SplashOutputDev::endType3Char(GfxState *state) {
T3GlyphStack *t3gs;
double *ctm;
if (t3GlyphStack->cacheTag) {
memcpy(t3GlyphStack->cacheData, bitmap->getDataPtr(),
t3GlyphStack->cache->glyphSize);
delete bitmap;
delete splash;
bitmap = t3GlyphStack->origBitmap;
splash = t3GlyphStack->origSplash;
ctm = state->getCTM();
state->setCTM(ctm[0], ctm[1], ctm[2], ctm[3],
t3GlyphStack->origCTM4, t3GlyphStack->origCTM5);
updateCTM(state, 0, 0, 0, 0, 0, 0);
drawType3Glyph(t3GlyphStack->cache,
t3GlyphStack->cacheTag, t3GlyphStack->cacheData);
}
t3gs = t3GlyphStack;
t3GlyphStack = t3gs->next;
delete t3gs;
}
void SplashOutputDev::type3D0(GfxState *state, double wx, double wy) {
}
void SplashOutputDev::type3D1(GfxState *state, double wx, double wy,
double llx, double lly, double urx, double ury) {
double *ctm;
T3FontCache *t3Font;
SplashColor color;
double xt, yt, xMin, xMax, yMin, yMax, x1, y1;
int i, j;
t3Font = t3GlyphStack->cache;
// check for a valid bbox
state->transform(0, 0, &xt, &yt);
state->transform(llx, lly, &x1, &y1);
xMin = xMax = x1;
yMin = yMax = y1;
state->transform(llx, ury, &x1, &y1);
if (x1 < xMin) {
xMin = x1;
} else if (x1 > xMax) {
xMax = x1;
}
if (y1 < yMin) {
yMin = y1;
} else if (y1 > yMax) {
yMax = y1;
}
state->transform(urx, lly, &x1, &y1);
if (x1 < xMin) {
xMin = x1;
} else if (x1 > xMax) {
xMax = x1;
}
if (y1 < yMin) {
yMin = y1;
} else if (y1 > yMax) {
yMax = y1;
}
state->transform(urx, ury, &x1, &y1);
if (x1 < xMin) {
xMin = x1;
} else if (x1 > xMax) {
xMax = x1;
}
if (y1 < yMin) {
yMin = y1;
} else if (y1 > yMax) {
yMax = y1;
}
if (xMin - xt < t3Font->glyphX ||
yMin - yt < t3Font->glyphY ||
xMax - xt > t3Font->glyphX + t3Font->glyphW ||
yMax - yt > t3Font->glyphY + t3Font->glyphH) {
if (t3Font->validBBox) {
error(-1, "Bad bounding box in Type 3 glyph");
}
return;
}
// allocate a cache entry
i = (t3GlyphStack->code & (t3Font->cacheSets - 1)) * t3Font->cacheAssoc;
for (j = 0; j < t3Font->cacheAssoc; ++j) {
if ((t3Font->cacheTags[i+j].mru & 0x7fff) == t3Font->cacheAssoc - 1) {
t3Font->cacheTags[i+j].mru = 0x8000;
t3Font->cacheTags[i+j].code = t3GlyphStack->code;
t3GlyphStack->cacheTag = &t3Font->cacheTags[i+j];
t3GlyphStack->cacheData = t3Font->cacheData + (i+j) * t3Font->glyphSize;
} else {
++t3Font->cacheTags[i+j].mru;
}
}
// save state
t3GlyphStack->origBitmap = bitmap;
t3GlyphStack->origSplash = splash;
ctm = state->getCTM();
t3GlyphStack->origCTM4 = ctm[4];
t3GlyphStack->origCTM5 = ctm[5];
// create the temporary bitmap
if (colorMode == splashModeMono1) {
bitmap = new SplashBitmap(t3Font->glyphW, t3Font->glyphH, 1,
splashModeMono1, gFalse);
splash = new Splash(bitmap, gFalse,
t3GlyphStack->origSplash->getScreen());
color[0] = 0;
splash->clear(color);
color[0] = 1;
} else {
bitmap = new SplashBitmap(t3Font->glyphW, t3Font->glyphH, 1,
splashModeMono8, gFalse);
splash = new Splash(bitmap, vectorAntialias,
t3GlyphStack->origSplash->getScreen());
color[0] = 0x00;
splash->clear(color);
color[0] = 0xff;
}
splash->setFillPattern(new SplashSolidColor(color));
splash->setStrokePattern(new SplashSolidColor(color));
//~ this should copy other state from t3GlyphStack->origSplash?
state->setCTM(ctm[0], ctm[1], ctm[2], ctm[3],
-t3Font->glyphX, -t3Font->glyphY);
updateCTM(state, 0, 0, 0, 0, 0, 0);
}
void SplashOutputDev::drawType3Glyph(T3FontCache *t3Font,
T3FontCacheTag *tag, Guchar *data) {
SplashGlyphBitmap glyph;
glyph.x = -t3Font->glyphX;
glyph.y = -t3Font->glyphY;
glyph.w = t3Font->glyphW;
glyph.h = t3Font->glyphH;
glyph.aa = colorMode != splashModeMono1;
glyph.data = data;
glyph.freeData = gFalse;
splash->fillGlyph(0, 0, &glyph);
}
void SplashOutputDev::endTextObject(GfxState *state) {
if (textClipPath) {
splash->clipToPath(textClipPath, gFalse);
delete textClipPath;
textClipPath = NULL;
}
}
struct SplashOutImageMaskData {
ImageStream *imgStr;
GBool invert;
int width, height, y;
};
GBool SplashOutputDev::imageMaskSrc(void *data, SplashColorPtr line) {
SplashOutImageMaskData *imgMaskData = (SplashOutImageMaskData *)data;
Guchar *p;
SplashColorPtr q;
int x;
if (imgMaskData->y == imgMaskData->height) {
return gFalse;
}
for (x = 0, p = imgMaskData->imgStr->getLine(), q = line;
x < imgMaskData->width;
++x) {
*q++ = *p++ ^ imgMaskData->invert;
}
++imgMaskData->y;
return gTrue;
}
void SplashOutputDev::drawImageMask(GfxState *state, Object *ref, Stream *str,
int width, int height, GBool invert,
GBool inlineImg) {
double *ctm;
SplashCoord mat[6];
SplashOutImageMaskData imgMaskData;
if (state->getFillColorSpace()->isNonMarking()) {
return;
}
ctm = state->getCTM();
mat[0] = ctm[0];
mat[1] = ctm[1];
mat[2] = -ctm[2];
mat[3] = -ctm[3];
mat[4] = ctm[2] + ctm[4];
mat[5] = ctm[3] + ctm[5];
imgMaskData.imgStr = new ImageStream(str, width, 1, 1);
imgMaskData.imgStr->reset();
imgMaskData.invert = invert ? 0 : 1;
imgMaskData.width = width;
imgMaskData.height = height;
imgMaskData.y = 0;
splash->fillImageMask(&imageMaskSrc, &imgMaskData, width, height, mat,
t3GlyphStack != NULL);
if (inlineImg) {
while (imgMaskData.y < height) {
imgMaskData.imgStr->getLine();
++imgMaskData.y;
}
}
delete imgMaskData.imgStr;
str->close();
}
struct SplashOutImageData {
ImageStream *imgStr;
GfxImageColorMap *colorMap;
SplashColorPtr lookup;
int *maskColors;
SplashColorMode colorMode;
int width, height, y;
};
GBool SplashOutputDev::imageSrc(void *data, SplashColorPtr colorLine,
Guchar *alphaLine) {
SplashOutImageData *imgData = (SplashOutImageData *)data;
Guchar *p;
SplashColorPtr q, col;
GfxRGB rgb;
GfxGray gray;
#if SPLASH_CMYK
GfxCMYK cmyk;
#endif
int nComps, x;
if (imgData->y == imgData->height) {
return gFalse;
}
nComps = imgData->colorMap->getNumPixelComps();
if (imgData->lookup) {
switch (imgData->colorMode) {
case splashModeMono1:
case splashModeMono8:
for (x = 0, p = imgData->imgStr->getLine(), q = colorLine;
x < imgData->width;
++x, ++p) {
*q++ = imgData->lookup[*p];
}
break;
case splashModeRGB8:
case splashModeBGR8:
for (x = 0, p = imgData->imgStr->getLine(), q = colorLine;
x < imgData->width;
++x, ++p) {
col = &imgData->lookup[3 * *p];
*q++ = col[0];
*q++ = col[1];
*q++ = col[2];
}
break;
#if SPLASH_CMYK
case splashModeCMYK8:
for (x = 0, p = imgData->imgStr->getLine(), q = colorLine;
x < imgData->width;
++x, ++p) {
col = &imgData->lookup[4 * *p];
*q++ = col[0];
*q++ = col[1];
*q++ = col[2];
*q++ = col[3];
}
break;
#endif
}
} else {
switch (imgData->colorMode) {
case splashModeMono1:
case splashModeMono8:
for (x = 0, p = imgData->imgStr->getLine(), q = colorLine;
x < imgData->width;
++x, p += nComps) {
imgData->colorMap->getGray(p, &gray);
*q++ = colToByte(gray);
}
break;
case splashModeRGB8:
case splashModeBGR8:
for (x = 0, p = imgData->imgStr->getLine(), q = colorLine;
x < imgData->width;
++x, p += nComps) {
imgData->colorMap->getRGB(p, &rgb);
*q++ = colToByte(rgb.r);
*q++ = colToByte(rgb.g);
*q++ = colToByte(rgb.b);
}
break;
#if SPLASH_CMYK
case splashModeCMYK8:
for (x = 0, p = imgData->imgStr->getLine(), q = colorLine;
x < imgData->width;
++x, p += nComps) {
imgData->colorMap->getCMYK(p, &cmyk);
*q++ = colToByte(cmyk.c);
*q++ = colToByte(cmyk.m);
*q++ = colToByte(cmyk.y);
*q++ = colToByte(cmyk.k);
}
break;
#endif
}
}
++imgData->y;
return gTrue;
}
GBool SplashOutputDev::alphaImageSrc(void *data, SplashColorPtr colorLine,
Guchar *alphaLine) {
SplashOutImageData *imgData = (SplashOutImageData *)data;
Guchar *p, *aq;
SplashColorPtr q, col;
GfxRGB rgb;
GfxGray gray;
#if SPLASH_CMYK
GfxCMYK cmyk;
#endif
Guchar alpha;
int nComps, x, i;
if (imgData->y == imgData->height) {
return gFalse;
}
nComps = imgData->colorMap->getNumPixelComps();
for (x = 0, p = imgData->imgStr->getLine(), q = colorLine, aq = alphaLine;
x < imgData->width;
++x, p += nComps) {
alpha = 0;
for (i = 0; i < nComps; ++i) {
if (p[i] < imgData->maskColors[2*i] ||
p[i] > imgData->maskColors[2*i+1]) {
alpha = 0xff;
break;
}
}
if (imgData->lookup) {
switch (imgData->colorMode) {
case splashModeMono1:
case splashModeMono8:
*q++ = imgData->lookup[*p];
*aq++ = alpha;
break;
case splashModeRGB8:
case splashModeBGR8:
col = &imgData->lookup[3 * *p];
*q++ = col[0];
*q++ = col[1];
*q++ = col[2];
*aq++ = alpha;
break;
#if SPLASH_CMYK
case splashModeCMYK8:
col = &imgData->lookup[4 * *p];
*q++ = col[0];
*q++ = col[1];
*q++ = col[2];
*q++ = col[3];
*aq++ = alpha;
break;
#endif
}
} else {
switch (imgData->colorMode) {
case splashModeMono1:
case splashModeMono8:
imgData->colorMap->getGray(p, &gray);
*q++ = colToByte(gray);
*aq++ = alpha;
break;
case splashModeRGB8:
case splashModeBGR8:
imgData->colorMap->getRGB(p, &rgb);
*q++ = colToByte(rgb.r);
*q++ = colToByte(rgb.g);
*q++ = colToByte(rgb.b);
*aq++ = alpha;
break;
#if SPLASH_CMYK
case splashModeCMYK8:
imgData->colorMap->getCMYK(p, &cmyk);
*q++ = colToByte(cmyk.c);
*q++ = colToByte(cmyk.m);
*q++ = colToByte(cmyk.y);
*q++ = colToByte(cmyk.k);
*aq++ = alpha;
break;
#endif
}
}
}
++imgData->y;
return gTrue;
}
void SplashOutputDev::drawImage(GfxState *state, Object *ref, Stream *str,
int width, int height,
GfxImageColorMap *colorMap,
int *maskColors, GBool inlineImg) {
double *ctm;
SplashCoord mat[6];
SplashOutImageData imgData;
SplashColorMode srcMode;
SplashImageSource src;
GfxGray gray;
GfxRGB rgb;
#if SPLASH_CMYK
GfxCMYK cmyk;
#endif
Guchar pix;
int n, i;
ctm = state->getCTM();
mat[0] = ctm[0];
mat[1] = ctm[1];
mat[2] = -ctm[2];
mat[3] = -ctm[3];
mat[4] = ctm[2] + ctm[4];
mat[5] = ctm[3] + ctm[5];
imgData.imgStr = new ImageStream(str, width,
colorMap->getNumPixelComps(),
colorMap->getBits());
imgData.imgStr->reset();
imgData.colorMap = colorMap;
imgData.maskColors = maskColors;
imgData.colorMode = colorMode;
imgData.width = width;
imgData.height = height;
imgData.y = 0;
// special case for one-channel (monochrome/gray/separation) images:
// build a lookup table here
imgData.lookup = NULL;
if (colorMap->getNumPixelComps() == 1) {
n = 1 << colorMap->getBits();
switch (colorMode) {
case splashModeMono1:
case splashModeMono8:
imgData.lookup = (SplashColorPtr)gmalloc(n);
for (i = 0; i < n; ++i) {
pix = (Guchar)i;
colorMap->getGray(&pix, &gray);
imgData.lookup[i] = colToByte(gray);
}
break;
case splashModeRGB8:
case splashModeBGR8:
imgData.lookup = (SplashColorPtr)gmalloc(3 * n);
for (i = 0; i < n; ++i) {
pix = (Guchar)i;
colorMap->getRGB(&pix, &rgb);
imgData.lookup[3*i] = colToByte(rgb.r);
imgData.lookup[3*i+1] = colToByte(rgb.g);
imgData.lookup[3*i+2] = colToByte(rgb.b);
}
break;
#if SPLASH_CMYK
case splashModeCMYK8:
imgData.lookup = (SplashColorPtr)gmalloc(4 * n);
for (i = 0; i < n; ++i) {
pix = (Guchar)i;
colorMap->getCMYK(&pix, &cmyk);
imgData.lookup[4*i] = colToByte(cmyk.c);
imgData.lookup[4*i+1] = colToByte(cmyk.m);
imgData.lookup[4*i+2] = colToByte(cmyk.y);
imgData.lookup[4*i+3] = colToByte(cmyk.k);
}
break;
#endif
break;
}
}
if (colorMode == splashModeMono1) {
srcMode = splashModeMono8;
} else {
srcMode = colorMode;
}
src = maskColors ? &alphaImageSrc : &imageSrc;
splash->drawImage(src, &imgData, srcMode, maskColors ? gTrue : gFalse,
width, height, mat);
if (inlineImg) {
while (imgData.y < height) {
imgData.imgStr->getLine();
++imgData.y;
}
}
gfree(imgData.lookup);
delete imgData.imgStr;
str->close();
}
struct SplashOutMaskedImageData {
ImageStream *imgStr;
GfxImageColorMap *colorMap;
SplashBitmap *mask;
SplashColorPtr lookup;
SplashColorMode colorMode;
int width, height, y;
};
GBool SplashOutputDev::maskedImageSrc(void *data, SplashColorPtr colorLine,
Guchar *alphaLine) {
SplashOutMaskedImageData *imgData = (SplashOutMaskedImageData *)data;
Guchar *p, *aq;
SplashColor maskColor;
SplashColorPtr q, col;
GfxRGB rgb;
GfxGray gray;
#if SPLASH_CMYK
GfxCMYK cmyk;
#endif
Guchar alpha;
int nComps, x;
if (imgData->y == imgData->height) {
return gFalse;
}
nComps = imgData->colorMap->getNumPixelComps();
for (x = 0, p = imgData->imgStr->getLine(), q = colorLine, aq = alphaLine;
x < imgData->width;
++x, p += nComps) {
imgData->mask->getPixel(x, imgData->y, maskColor);
alpha = maskColor[0] ? 0xff : 0x00;
if (imgData->lookup) {
switch (imgData->colorMode) {
case splashModeMono1:
case splashModeMono8:
*q++ = imgData->lookup[*p];
*aq++ = alpha;
break;
case splashModeRGB8:
case splashModeBGR8:
col = &imgData->lookup[3 * *p];
*q++ = col[0];
*q++ = col[1];
*q++ = col[2];
*aq++ = alpha;
break;
#if SPLASH_CMYK
case splashModeCMYK8:
col = &imgData->lookup[4 * *p];
*q++ = col[0];
*q++ = col[1];
*q++ = col[2];
*q++ = col[3];
*aq++ = alpha;
break;
#endif
}
} else {
switch (imgData->colorMode) {
case splashModeMono1:
case splashModeMono8:
imgData->colorMap->getGray(p, &gray);
*q++ = colToByte(gray);
*aq++ = alpha;
break;
case splashModeRGB8:
case splashModeBGR8:
imgData->colorMap->getRGB(p, &rgb);
*q++ = colToByte(rgb.r);
*q++ = colToByte(rgb.g);
*q++ = colToByte(rgb.b);
*aq++ = alpha;
break;
#if SPLASH_CMYK
case splashModeCMYK8:
imgData->colorMap->getCMYK(p, &cmyk);
*q++ = colToByte(cmyk.c);
*q++ = colToByte(cmyk.m);
*q++ = colToByte(cmyk.y);
*q++ = colToByte(cmyk.k);
*aq++ = alpha;
break;
#endif
}
}
}
++imgData->y;
return gTrue;
}
void SplashOutputDev::drawMaskedImage(GfxState *state, Object *ref,
Stream *str, int width, int height,
GfxImageColorMap *colorMap,
Stream *maskStr, int maskWidth,
int maskHeight, GBool maskInvert) {
GfxImageColorMap *maskColorMap;
Object maskDecode, decodeLow, decodeHigh;
double *ctm;
SplashCoord mat[6];
SplashOutMaskedImageData imgData;
SplashOutImageMaskData imgMaskData;
SplashColorMode srcMode;
SplashBitmap *maskBitmap;
Splash *maskSplash;
SplashColor maskColor;
GfxGray gray;
GfxRGB rgb;
#if SPLASH_CMYK
GfxCMYK cmyk;
#endif
Guchar pix;
int n, i;
// If the mask is higher resolution than the image, use
// drawSoftMaskedImage() instead.
if (maskWidth > width || maskHeight > height) {
decodeLow.initInt(maskInvert ? 0 : 1);
decodeHigh.initInt(maskInvert ? 1 : 0);
maskDecode.initArray(xref);
maskDecode.arrayAdd(&decodeLow);
maskDecode.arrayAdd(&decodeHigh);
maskColorMap = new GfxImageColorMap(1, &maskDecode,
new GfxDeviceGrayColorSpace());
maskDecode.free();
drawSoftMaskedImage(state, ref, str, width, height, colorMap,
maskStr, maskWidth, maskHeight, maskColorMap);
delete maskColorMap;
} else {
//----- scale the mask image to the same size as the source image
mat[0] = (SplashCoord)width;
mat[1] = 0;
mat[2] = 0;
mat[3] = (SplashCoord)height;
mat[4] = 0;
mat[5] = 0;
imgMaskData.imgStr = new ImageStream(maskStr, maskWidth, 1, 1);
imgMaskData.imgStr->reset();
imgMaskData.invert = maskInvert ? 0 : 1;
imgMaskData.width = maskWidth;
imgMaskData.height = maskHeight;
imgMaskData.y = 0;
maskBitmap = new SplashBitmap(width, height, 1, splashModeMono1, gFalse);
maskSplash = new Splash(maskBitmap, gFalse);
maskColor[0] = 0;
maskSplash->clear(maskColor);
maskColor[0] = 0xff;
maskSplash->setFillPattern(new SplashSolidColor(maskColor));
maskSplash->fillImageMask(&imageMaskSrc, &imgMaskData,
maskWidth, maskHeight, mat, gFalse);
delete imgMaskData.imgStr;
maskStr->close();
delete maskSplash;
//----- draw the source image
ctm = state->getCTM();
mat[0] = ctm[0];
mat[1] = ctm[1];
mat[2] = -ctm[2];
mat[3] = -ctm[3];
mat[4] = ctm[2] + ctm[4];
mat[5] = ctm[3] + ctm[5];
imgData.imgStr = new ImageStream(str, width,
colorMap->getNumPixelComps(),
colorMap->getBits());
imgData.imgStr->reset();
imgData.colorMap = colorMap;
imgData.mask = maskBitmap;
imgData.colorMode = colorMode;
imgData.width = width;
imgData.height = height;
imgData.y = 0;
// special case for one-channel (monochrome/gray/separation) images:
// build a lookup table here
imgData.lookup = NULL;
if (colorMap->getNumPixelComps() == 1) {
n = 1 << colorMap->getBits();
switch (colorMode) {
case splashModeMono1:
case splashModeMono8:
imgData.lookup = (SplashColorPtr)gmalloc(n);
for (i = 0; i < n; ++i) {
pix = (Guchar)i;
colorMap->getGray(&pix, &gray);
imgData.lookup[i] = colToByte(gray);
}
break;
case splashModeRGB8:
case splashModeBGR8:
imgData.lookup = (SplashColorPtr)gmalloc(3 * n);
for (i = 0; i < n; ++i) {
pix = (Guchar)i;
colorMap->getRGB(&pix, &rgb);
imgData.lookup[3*i] = colToByte(rgb.r);
imgData.lookup[3*i+1] = colToByte(rgb.g);
imgData.lookup[3*i+2] = colToByte(rgb.b);
}
break;
#if SPLASH_CMYK
case splashModeCMYK8:
imgData.lookup = (SplashColorPtr)gmalloc(4 * n);
for (i = 0; i < n; ++i) {
pix = (Guchar)i;
colorMap->getCMYK(&pix, &cmyk);
imgData.lookup[4*i] = colToByte(cmyk.c);
imgData.lookup[4*i+1] = colToByte(cmyk.m);
imgData.lookup[4*i+2] = colToByte(cmyk.y);
imgData.lookup[4*i+3] = colToByte(cmyk.k);
}
break;
#endif
}
}
if (colorMode == splashModeMono1) {
srcMode = splashModeMono8;
} else {
srcMode = colorMode;
}
splash->drawImage(&maskedImageSrc, &imgData, srcMode, gTrue,
width, height, mat);
delete maskBitmap;
gfree(imgData.lookup);
delete imgData.imgStr;
str->close();
}
}
void SplashOutputDev::drawSoftMaskedImage(GfxState *state, Object *ref,
Stream *str, int width, int height,
GfxImageColorMap *colorMap,
Stream *maskStr,
int maskWidth, int maskHeight,
GfxImageColorMap *maskColorMap) {
double *ctm;
SplashCoord mat[6];
SplashOutImageData imgData;
SplashOutImageData imgMaskData;
SplashColorMode srcMode;
SplashBitmap *maskBitmap;
Splash *maskSplash;
SplashColor maskColor;
GfxGray gray;
GfxRGB rgb;
#if SPLASH_CMYK
GfxCMYK cmyk;
#endif
Guchar pix;
int n, i;
ctm = state->getCTM();
mat[0] = ctm[0];
mat[1] = ctm[1];
mat[2] = -ctm[2];
mat[3] = -ctm[3];
mat[4] = ctm[2] + ctm[4];
mat[5] = ctm[3] + ctm[5];
//----- set up the soft mask
imgMaskData.imgStr = new ImageStream(maskStr, maskWidth,
maskColorMap->getNumPixelComps(),
maskColorMap->getBits());
imgMaskData.imgStr->reset();
imgMaskData.colorMap = maskColorMap;
imgMaskData.maskColors = NULL;
imgMaskData.colorMode = splashModeMono8;
imgMaskData.width = maskWidth;
imgMaskData.height = maskHeight;
imgMaskData.y = 0;
n = 1 << maskColorMap->getBits();
imgMaskData.lookup = (SplashColorPtr)gmalloc(n);
for (i = 0; i < n; ++i) {
pix = (Guchar)i;
maskColorMap->getGray(&pix, &gray);
imgMaskData.lookup[i] = colToByte(gray);
}
maskBitmap = new SplashBitmap(bitmap->getWidth(), bitmap->getHeight(),
1, splashModeMono8, gFalse);
maskSplash = new Splash(maskBitmap, vectorAntialias);
maskColor[0] = 0;
maskSplash->clear(maskColor);
maskSplash->drawImage(&imageSrc, &imgMaskData, splashModeMono8, gFalse,
maskWidth, maskHeight, mat);
delete imgMaskData.imgStr;
maskStr->close();
gfree(imgMaskData.lookup);
delete maskSplash;
splash->setSoftMask(maskBitmap);
//----- draw the source image
imgData.imgStr = new ImageStream(str, width,
colorMap->getNumPixelComps(),
colorMap->getBits());
imgData.imgStr->reset();
imgData.colorMap = colorMap;
imgData.maskColors = NULL;
imgData.colorMode = colorMode;
imgData.width = width;
imgData.height = height;
imgData.y = 0;
// special case for one-channel (monochrome/gray/separation) images:
// build a lookup table here
imgData.lookup = NULL;
if (colorMap->getNumPixelComps() == 1) {
n = 1 << colorMap->getBits();
switch (colorMode) {
case splashModeMono1:
case splashModeMono8:
imgData.lookup = (SplashColorPtr)gmalloc(n);
for (i = 0; i < n; ++i) {
pix = (Guchar)i;
colorMap->getGray(&pix, &gray);
imgData.lookup[i] = colToByte(gray);
}
break;
case splashModeRGB8:
case splashModeBGR8:
imgData.lookup = (SplashColorPtr)gmalloc(3 * n);
for (i = 0; i < n; ++i) {
pix = (Guchar)i;
colorMap->getRGB(&pix, &rgb);
imgData.lookup[3*i] = colToByte(rgb.r);
imgData.lookup[3*i+1] = colToByte(rgb.g);
imgData.lookup[3*i+2] = colToByte(rgb.b);
}
break;
#if SPLASH_CMYK
case splashModeCMYK8:
imgData.lookup = (SplashColorPtr)gmalloc(4 * n);
for (i = 0; i < n; ++i) {
pix = (Guchar)i;
colorMap->getCMYK(&pix, &cmyk);
imgData.lookup[4*i] = colToByte(cmyk.c);
imgData.lookup[4*i+1] = colToByte(cmyk.m);
imgData.lookup[4*i+2] = colToByte(cmyk.y);
imgData.lookup[4*i+3] = colToByte(cmyk.k);
}
break;
#endif
}
}
if (colorMode == splashModeMono1) {
srcMode = splashModeMono8;
} else {
srcMode = colorMode;
}
splash->drawImage(&imageSrc, &imgData, srcMode, gFalse, width, height, mat);
splash->setSoftMask(NULL);
gfree(imgData.lookup);
delete imgData.imgStr;
str->close();
}
void SplashOutputDev::beginTransparencyGroup(GfxState *state, double *bbox,
GfxColorSpace *blendingColorSpace,
GBool isolated, GBool knockout,
GBool forSoftMask) {
SplashTransparencyGroup *transpGroup;
SplashColor color;
double xMin, yMin, xMax, yMax, x, y;
int tx, ty, w, h;
// transform the bbox
state->transform(bbox[0], bbox[1], &x, &y);
xMin = xMax = x;
yMin = yMax = y;
state->transform(bbox[0], bbox[3], &x, &y);
if (x < xMin) {
xMin = x;
} else if (x > xMax) {
xMax = x;
}
if (y < yMin) {
yMin = y;
} else if (y > yMax) {
yMax = y;
}
state->transform(bbox[2], bbox[1], &x, &y);
if (x < xMin) {
xMin = x;
} else if (x > xMax) {
xMax = x;
}
if (y < yMin) {
yMin = y;
} else if (y > yMax) {
yMax = y;
}
state->transform(bbox[2], bbox[3], &x, &y);
if (x < xMin) {
xMin = x;
} else if (x > xMax) {
xMax = x;
}
if (y < yMin) {
yMin = y;
} else if (y > yMax) {
yMax = y;
}
tx = (int)floor(xMin);
if (tx < 0) {
tx = 0;
} else if (tx > bitmap->getWidth()) {
tx = bitmap->getWidth();
}
ty = (int)floor(yMin);
if (ty < 0) {
ty = 0;
} else if (ty > bitmap->getHeight()) {
ty = bitmap->getHeight();
}
w = (int)ceil(xMax) - tx + 1;
if (tx + w > bitmap->getWidth()) {
w = bitmap->getWidth() - tx;
}
if (w < 1) {
w = 1;
}
h = (int)ceil(yMax) - ty + 1;
if (ty + h > bitmap->getHeight()) {
h = bitmap->getHeight() - ty;
}
if (h < 1) {
h = 1;
}
// push a new stack entry
transpGroup = new SplashTransparencyGroup();
transpGroup->tx = tx;
transpGroup->ty = ty;
transpGroup->blendingColorSpace = blendingColorSpace;
transpGroup->isolated = isolated;
transpGroup->next = transpGroupStack;
transpGroupStack = transpGroup;
// save state
transpGroup->origBitmap = bitmap;
transpGroup->origSplash = splash;
//~ this ignores the blendingColorSpace arg
// create the temporary bitmap
bitmap = new SplashBitmap(w, h, bitmapRowPad, colorMode, gTrue,
bitmapTopDown);
splash = new Splash(bitmap, vectorAntialias,
transpGroup->origSplash->getScreen());
if (isolated) {
switch (colorMode) {
case splashModeMono1:
case splashModeMono8:
color[0] = 0;
break;
case splashModeRGB8:
case splashModeBGR8:
color[0] = color[1] = color[2] = 0;
break;
#if SPLASH_CMYK
case splashModeCMYK8:
color[0] = color[1] = color[2] = color[3] = 0;
break;
#endif
default:
// make gcc happy
break;
}
splash->clear(color, 0);
} else {
splash->blitTransparent(transpGroup->origBitmap, tx, ty, 0, 0, w, h);
splash->setInNonIsolatedGroup(transpGroup->origBitmap, tx, ty);
}
transpGroup->tBitmap = bitmap;
state->shiftCTM(-tx, -ty);
updateCTM(state, 0, 0, 0, 0, 0, 0);
}
void SplashOutputDev::endTransparencyGroup(GfxState *state) {
double *ctm;
// restore state
delete splash;
bitmap = transpGroupStack->origBitmap;
splash = transpGroupStack->origSplash;
ctm = state->getCTM();
state->shiftCTM(transpGroupStack->tx, transpGroupStack->ty);
updateCTM(state, 0, 0, 0, 0, 0, 0);
}
void SplashOutputDev::paintTransparencyGroup(GfxState *state, double *bbox) {
SplashBitmap *tBitmap;
SplashTransparencyGroup *transpGroup;
GBool isolated;
int tx, ty;
tx = transpGroupStack->tx;
ty = transpGroupStack->ty;
tBitmap = transpGroupStack->tBitmap;
isolated = transpGroupStack->isolated;
// paint the transparency group onto the parent bitmap
// - the clip path was set in the parent's state)
splash->composite(tBitmap, 0, 0, tx, ty,
tBitmap->getWidth(), tBitmap->getHeight(),
gFalse, !isolated);
// pop the stack
transpGroup = transpGroupStack;
transpGroupStack = transpGroup->next;
delete transpGroup;
delete tBitmap;
}
void SplashOutputDev::setSoftMask(GfxState *state, double *bbox,
GBool alpha, Function *transferFunc,
GfxColor *backdropColor) {
SplashBitmap *softMask, *tBitmap;
Splash *tSplash;
SplashTransparencyGroup *transpGroup;
SplashColor color;
SplashColorPtr p;
GfxGray gray;
GfxRGB rgb;
#if SPLASH_CMYK
GfxCMYK cmyk;
#endif
double lum, lum2;
int tx, ty, x, y;
tx = transpGroupStack->tx;
ty = transpGroupStack->ty;
tBitmap = transpGroupStack->tBitmap;
// composite with backdrop color
if (!alpha && colorMode != splashModeMono1) {
//~ need to correctly handle the case where no blending color
//~ space is given
tSplash = new Splash(tBitmap, vectorAntialias,
transpGroupStack->origSplash->getScreen());
if (transpGroupStack->blendingColorSpace) {
switch (colorMode) {
case splashModeMono1:
// transparency is not supported in mono1 mode
break;
case splashModeMono8:
transpGroupStack->blendingColorSpace->getGray(backdropColor, &gray);
color[0] = colToByte(gray);
tSplash->compositeBackground(color);
break;
case splashModeRGB8:
case splashModeBGR8:
transpGroupStack->blendingColorSpace->getRGB(backdropColor, &rgb);
color[0] = colToByte(rgb.r);
color[1] = colToByte(rgb.g);
color[2] = colToByte(rgb.b);
tSplash->compositeBackground(color);
break;
#if SPLASH_CMYK
case splashModeCMYK8:
transpGroupStack->blendingColorSpace->getCMYK(backdropColor, &cmyk);
color[0] = colToByte(cmyk.c);
color[1] = colToByte(cmyk.m);
color[2] = colToByte(cmyk.y);
color[3] = colToByte(cmyk.k);
tSplash->compositeBackground(color);
break;
#endif
}
delete tSplash;
}
}
softMask = new SplashBitmap(bitmap->getWidth(), bitmap->getHeight(),
1, splashModeMono8, gFalse);
memset(softMask->getDataPtr(), 0,
softMask->getRowSize() * softMask->getHeight());
p = softMask->getDataPtr() + ty * softMask->getRowSize() + tx;
for (y = 0; y < tBitmap->getHeight(); ++y) {
for (x = 0; x < tBitmap->getWidth(); ++x) {
tBitmap->getPixel(x, y, color);
if (alpha) {
//~ unimplemented
} else {
// convert to luminosity
switch (colorMode) {
case splashModeMono1:
case splashModeMono8:
lum = color[0] / 255.0;
break;
case splashModeRGB8:
case splashModeBGR8:
lum = (0.3 / 255.0) * color[0] +
(0.59 / 255.0) * color[1] +
(0.11 / 255.0) * color[2];
break;
#if SPLASH_CMYK
case splashModeCMYK8:
lum = (1 - color[4] / 255.0)
- (0.3 / 255.0) * color[0]
- (0.59 / 255.0) * color[1]
- (0.11 / 255.0) * color[2];
if (lum < 0) {
lum = 0;
}
break;
#endif
}
if (transferFunc) {
transferFunc->transform(&lum, &lum2);
} else {
lum2 = lum;
}
p[x] = (int)(lum2 * 255.0 + 0.5);
}
}
p += softMask->getRowSize();
}
splash->setSoftMask(softMask);
// pop the stack
transpGroup = transpGroupStack;
transpGroupStack = transpGroup->next;
delete transpGroup;
delete tBitmap;
}
void SplashOutputDev::clearSoftMask(GfxState *state) {
splash->setSoftMask(NULL);
}
void SplashOutputDev::setPaperColor(SplashColorPtr paperColorA) {
splashColorCopy(paperColor, paperColorA);
}
int SplashOutputDev::getBitmapWidth() {
return bitmap->getWidth();
}
int SplashOutputDev::getBitmapHeight() {
return bitmap->getHeight();
}
SplashBitmap *SplashOutputDev::takeBitmap() {
SplashBitmap *ret;
ret = bitmap;
bitmap = new SplashBitmap(1, 1, bitmapRowPad, colorMode,
colorMode != splashModeMono1, bitmapTopDown);
return ret;
}
void SplashOutputDev::getModRegion(int *xMin, int *yMin,
int *xMax, int *yMax) {
splash->getModRegion(xMin, yMin, xMax, yMax);
}
void SplashOutputDev::clearModRegion() {
splash->clearModRegion();
}
void SplashOutputDev::setFillColor(int r, int g, int b) {
GfxRGB rgb;
GfxGray gray;
#if SPLASH_CMYK
GfxCMYK cmyk;
#endif
rgb.r = byteToCol(r);
rgb.g = byteToCol(g);
rgb.b = byteToCol(b);
gray = (GfxColorComp)(0.299 * rgb.r + 0.587 * rgb.g + 0.114 * rgb.g + 0.5);
if (gray > gfxColorComp1) {
gray = gfxColorComp1;
}
#if SPLASH_CMYK
cmyk.c = gfxColorComp1 - rgb.r;
cmyk.m = gfxColorComp1 - rgb.g;
cmyk.y = gfxColorComp1 - rgb.b;
cmyk.k = 0;
splash->setFillPattern(getColor(gray, &rgb, &cmyk));
#else
splash->setFillPattern(getColor(gray, &rgb));
#endif
}
SplashFont *SplashOutputDev::getFont(GString *name, double *textMatA) {
DisplayFontParam *dfp;
Ref ref;
SplashOutFontFileID *id;
SplashFontFile *fontFile;
SplashFont *fontObj;
FoFiTrueType *ff;
Gushort *codeToGID;
Unicode u;
SplashCoord textMat[4];
int cmap, i;
for (i = 0; i < 16; ++i) {
if (!name->cmp(splashOutSubstFonts[i].name)) {
break;
}
}
if (i == 16) {
return NULL;
}
ref.num = i;
ref.gen = -1;
id = new SplashOutFontFileID(&ref);
// check the font file cache
if ((fontFile = fontEngine->getFontFile(id))) {
delete id;
// load the font file
} else {
dfp = globalParams->getDisplayFont(name);
if (dfp && dfp->kind == displayFontT1) {
fontFile = fontEngine->loadType1Font(id, dfp->t1.fileName->getCString(),
gFalse, winAnsiEncoding);
} else if (dfp && dfp->kind == displayFontTT) {
if (!(ff = FoFiTrueType::load(dfp->tt.fileName->getCString()))) {
return NULL;
}
for (cmap = 0; cmap < ff->getNumCmaps(); ++cmap) {
if ((ff->getCmapPlatform(cmap) == 3 &&
ff->getCmapEncoding(cmap) == 1) ||
ff->getCmapPlatform(cmap) == 0) {
break;
}
}
if (cmap == ff->getNumCmaps()) {
delete ff;
return NULL;
}
codeToGID = (Gushort *)gmallocn(256, sizeof(Gushort));
for (i = 0; i < 256; ++i) {
codeToGID[i] = 0;
if (winAnsiEncoding[i] &&
(u = globalParams->mapNameToUnicode(winAnsiEncoding[i]))) {
codeToGID[i] = ff->mapCodeToGID(cmap, u);
}
}
delete ff;
fontFile = fontEngine->loadTrueTypeFont(id,
dfp->tt.fileName->getCString(),
gFalse, codeToGID, 256);
} else {
return NULL;
}
}
// create the scaled font
textMat[0] = (SplashCoord)textMatA[0];
textMat[1] = (SplashCoord)textMatA[1];
textMat[2] = (SplashCoord)textMatA[2];
textMat[3] = (SplashCoord)textMatA[3];
fontObj = fontEngine->getFont(fontFile, textMat, splash->getMatrix());
return fontObj;
}
#if 1 //~tmp: turn off anti-aliasing temporarily
GBool SplashOutputDev::getVectorAntialias() {
return splash->getVectorAntialias();
}
void SplashOutputDev::setVectorAntialias(GBool vaa) {
splash->setVectorAntialias(vaa);
}
#endif