Diffstat (limited to 'noncore/unsupported/qpdf/xpdf/Gfx.cc') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | noncore/unsupported/qpdf/xpdf/Gfx.cc | 589 |
1 files changed, 444 insertions, 145 deletions
diff --git a/noncore/unsupported/qpdf/xpdf/Gfx.cc b/noncore/unsupported/qpdf/xpdf/Gfx.cc index c19971c..17d613e 100644 --- a/noncore/unsupported/qpdf/xpdf/Gfx.cc +++ b/noncore/unsupported/qpdf/xpdf/Gfx.cc @@ -2,7 +2,7 @@ // // Gfx.cc // -// Copyright 1996 Derek B. Noonburg +// Copyright 1996-2002 Glyph & Cog, LLC // //======================================================================== @@ -30,6 +30,11 @@ #include "Error.h" #include "Gfx.h" +// the MSVC math.h doesn't define this +#ifndef M_PI +#define M_PI 3.14159265358979323846 +#endif + //------------------------------------------------------------------------ // constants //------------------------------------------------------------------------ @@ -40,6 +45,12 @@ // Max delta allowed in any color component for an axial shading fill. #define axialColorDelta (1 / 256.0) +// Max number of splits along the t axis for a radial shading fill. +#define radialMaxSplits 256 + +// Max delta allowed in any color component for a radial shading fill. +#define radialColorDelta (1 / 256.0) + //------------------------------------------------------------------------ // Operator table //------------------------------------------------------------------------ @@ -374,6 +385,7 @@ Gfx::Gfx(XRef *xrefA, OutputDev *outA, int pageNum, Dict *resDict, fouble dpi, int i; xref = xrefA; + subPage = gFalse; printCommands = printCommandsA; // start the resource stack @@ -405,21 +417,54 @@ Gfx::Gfx(XRef *xrefA, OutputDev *outA, int pageNum, Dict *resDict, fouble dpi, } } -Gfx::~Gfx() { - GfxResources *resPtr; +Gfx::Gfx(XRef *xrefA, OutputDev *outA, Dict *resDict, + PDFRectangle *box, GBool crop, PDFRectangle *cropBox) { + int i; + xref = xrefA; + subPage = gTrue; + printCommands = gFalse; + + // start the resource stack + res = new GfxResources(xref, resDict, NULL); + + // initialize + out = outA; + state = new GfxState(72, box, 0, gFalse); + fontChanged = gFalse; + clip = clipNone; + ignoreUndef = 0; + for (i = 0; i < 6; ++i) { + baseMatrix[i] = state->getCTM()[i]; + } + + // set crop box + if (crop) { + state->moveTo(cropBox->x1, cropBox->y1); + state->lineTo(cropBox->x2, cropBox->y1); + state->lineTo(cropBox->x2, cropBox->y2); + state->lineTo(cropBox->x1, cropBox->y2); + state->closePath(); + state->clip(); + out->clip(state); + state->clearPath(); + } +} + +Gfx::~Gfx() { while (state->hasSaves()) { state = state->restore(); out->restoreState(state); } - out->endPage(); + if (!subPage) { + out->endPage(); + } while (res) { - resPtr = res->getNext(); - delete res; - res = resPtr; + popResources(); } - if (state) + if (state) { delete state; + } } void Gfx::display(Object *obj, GBool topLevel) { @@ -449,11 +494,11 @@ void Gfx::display(Object *obj, GBool topLevel) { void Gfx::go(GBool topLevel) { Object obj; Object args[maxArgs]; - int numCmds, numArgs; + int numArgs; int i; // scan a sequence of objects - numCmds = 0; + updateLevel = 0; numArgs = 0; parser->getObj(&obj); while (!obj.isEOF()) { @@ -476,9 +521,9 @@ void Gfx::go(GBool topLevel) { numArgs = 0; // periodically update display - if (++numCmds == 200) { + if (++updateLevel >= 20000) { out->dump(); - numCmds = 0; + updateLevel = 0; } // got an argument - save it @@ -519,7 +564,7 @@ void Gfx::go(GBool topLevel) { } // update display - if (topLevel && numCmds > 0) { + if (topLevel && updateLevel > 0) { out->dump(); } } @@ -1138,7 +1183,7 @@ void Gfx::doPatternFill(GBool eoFill) { fouble cxMin, cyMin, cxMax, cyMax; int xi0, yi0, xi1, yi1, xi, yi; fouble *ctm, *btm, *ptm; - fouble m[6], ictm[6], m1[6], im[6], imb[6]; + fouble m[6], ictm[6], m1[6], imb[6]; fouble det; fouble xstep, ystep; int i; @@ -1189,15 +1234,6 @@ void Gfx::doPatternFill(GBool eoFill) { m[4] = m1[4] * ictm[0] + m1[5] * ictm[2] + ictm[4]; m[5] = m1[4] * ictm[1] + m1[5] * ictm[3] + ictm[5]; - // construct a (current space) -> (pattern space) transform matrix - det = 1 / (m[0] * m[3] - m[1] * m[2]); - im[0] = m[3] * det; - im[1] = -m[1] * det; - im[2] = -m[2] * det; - im[3] = m[0] * det; - im[4] = (m[2] * m[5] - m[3] * m[4]) * det; - im[5] = (m[1] * m[4] - m[0] * m[5]) * det; - // construct a (base space) -> (pattern space) transform matrix det = 1 / (m1[0] * m1[3] - m1[1] * m1[2]); imb[0] = m1[3] * det; @@ -1331,6 +1367,9 @@ void Gfx::opShFill(Object args[], int numArgs) { case 2: doAxialShFill((GfxAxialShading *)shading); break; + case 3: + doRadialShFill((GfxRadialShading *)shading); + break; } // restore graphics state @@ -1343,9 +1382,6 @@ void Gfx::opShFill(Object args[], int numArgs) { void Gfx::doAxialShFill(GfxAxialShading *shading) { fouble xMin, yMin, xMax, yMax; fouble x0, y0, x1, y1; - fouble det; - fouble *ctm; - fouble ictm[6]; fouble dx, dy, mul; fouble tMin, tMax, t, tx, ty; fouble s[4], sMin, sMax, tmp; @@ -1357,54 +1393,8 @@ void Gfx::doAxialShFill(GfxAxialShading *shading) { int nComps; int i, j, k, kk; - // get clip region bbox and transform to current user space - state->getClipBBox(&x0, &y0, &x1, &y1); - ctm = state->getCTM(); - det = 1 / (ctm[0] * ctm[3] - ctm[1] * ctm[2]); - ictm[0] = ctm[3] * det; - ictm[1] = -ctm[1] * det; - ictm[2] = -ctm[2] * det; - ictm[3] = ctm[0] * det; - ictm[4] = (ctm[2] * ctm[5] - ctm[3] * ctm[4]) * det; - ictm[5] = (ctm[1] * ctm[4] - ctm[0] * ctm[5]) * det; - xMin = xMax = x0 * ictm[0] + y0 * ictm[2] + ictm[4]; - yMin = yMax = x0 * ictm[1] + y0 * ictm[3] + ictm[5]; - tx = x0 * ictm[0] + y1 * ictm[2] + ictm[4]; - ty = x0 * ictm[1] + y1 * ictm[3] + ictm[5]; - if (tx < xMin) { - xMin = tx; - } else if (tx > xMax) { - xMax = tx; - } - if (ty < yMin) { - yMin = ty; - } else if (ty > yMax) { - yMax = ty; - } - tx = x1 * ictm[0] + y0 * ictm[2] + ictm[4]; - ty = x1 * ictm[1] + y0 * ictm[3] + ictm[5]; - if (tx < xMin) { - xMin = tx; - } else if (tx > xMax) { - xMax = tx; - } - if (ty < yMin) { - yMin = ty; - } else if (ty > yMax) { - yMax = ty; - } - tx = x1 * ictm[0] + y1 * ictm[2] + ictm[4]; - ty = x1 * ictm[1] + y1 * ictm[3] + ictm[5]; - if (tx < xMin) { - xMin = tx; - } else if (tx > xMax) { - xMax = tx; - } - if (ty < yMin) { - yMin = ty; - } else if (ty > yMax) { - yMax = ty; - } + // get the clip region bbox + state->getUserClipBBox(&xMin, &yMin, &xMax, &yMax); // compute min and max t values, based on the four corners of the // clip region bbox @@ -1619,6 +1609,202 @@ void Gfx::doAxialShFill(GfxAxialShading *shading) { } } +void Gfx::doRadialShFill(GfxRadialShading *shading) { + fouble sMin, sMax, xMin, yMin, xMax, yMax; + fouble x0, y0, r0, x1, y1, r1, t0, t1; + int nComps; + GfxColor colorA, colorB; + fouble xa, ya, xb, yb, ra, rb; + fouble ta, tb, sa, sb; + int ia, ib, k, n; + fouble *ctm; + fouble angle, t; + + // get the shading info + shading->getCoords(&x0, &y0, &r0, &x1, &y1, &r1); + t0 = shading->getDomain0(); + t1 = shading->getDomain1(); + nComps = shading->getColorSpace()->getNComps(); + + // compute the (possibly extended) s range + sMin = 0; + sMax = 1; + if (shading->getExtend0()) { + if (r0 < r1) { + // extend the smaller end + sMin = -r0 / (r1 - r0); + } else { + // extend the larger end + //~ this computes the diagonal of the bounding box -- we should + //~ really compute the intersection of the moving/expanding + //~ circles with each of the four corners and look for the max + //~ radius + state->getUserClipBBox(&xMin, &yMin, &xMax, &yMax); + sMin = (sqrt((xMax - xMin) * (xMax - xMin) + + (yMax - yMin) * (yMax - yMin)) - r0) / (r1 - r0); + if (sMin > 0) { + sMin = 0; + } else if (sMin < -20) { + // sanity check + sMin = -20; + } + } + } + if (shading->getExtend1()) { + if (r1 < r0) { + // extend the smaller end + sMax = -r0 / (r1 - r0); + } else if (r1 > r0) { + // extend the larger end + state->getUserClipBBox(&xMin, &yMin, &xMax, &yMax); + sMax = (sqrt((xMax - xMin) * (xMax - xMin) + + (yMax - yMin) * (yMax - yMin)) - r0) / (r1 - r0); + if (sMax < 1) { + sMin = 1; + } else if (sMax > 20) { + // sanity check + sMax = 20; + } + } + } + + // compute the number of steps into which circles must be divided to + // achieve a curve flatness of 0.1 pixel in device space for the + // largest circle (note that "device space" is 72 dpi when generating + // PostScript, hence the relatively small 0.1 pixel accuracy) + ctm = state->getCTM(); + t = fabs(ctm[0]); + if (fabs(ctm[1]) > t) { + t = fabs(ctm[1]); + } + if (fabs(ctm[2]) > t) { + t = fabs(ctm[2]); + } + if (fabs(ctm[3]) > t) { + t = fabs(ctm[3]); + } + if (r0 > r1) { + t *= r0; + } else { + t *= r1; + } + if (t < 1) { + n = 3; + } else { + n = (int)(M_PI / acos(1 - 0.1 / t)); + if (n < 3) { + n = 3; + } else if (n > 200) { + n = 200; + } + } + + // Traverse the t axis and do the shading. + // + // This generates and fills a series of rings. Each ring is defined + // by two circles: + // sa, ta, xa, ya, ra, colorA + // sb, tb, xb, yb, rb, colorB + // + // The s/t axis is divided into radialMaxSplits parts; these parts + // are combined as much as possible while respecting the + // radialColorDelta parameter. + + // setup for the start circle + ia = 0; + sa = sMin; + ta = t0 + sa * (t1 - t0); + xa = x0 + sa * (x1 - x0); + ya = y0 + sa * (y1 - y0); + ra = r0 + sa * (r1 - r0); + if (ta < t0) { + shading->getColor(t0, &colorA); + } else if (ta > t1) { + shading->getColor(t1, &colorA); + } else { + shading->getColor(ta, &colorA); + } + + while (ia < radialMaxSplits) { + + // go as far along the t axis (toward t1) as we can, such that the + // color difference is within the tolerance (radialColorDelta) -- + // this uses bisection (between the current value, t, and t1), + // limited to radialMaxSplits points along the t axis + ib = radialMaxSplits; + sb = sMin + ((fouble)ib / (fouble)radialMaxSplits) * (sMax - sMin); + tb = t0 + sb * (t1 - t0); + if (tb < t0) { + shading->getColor(t0, &colorB); + } else if (tb > t1) { + shading->getColor(t1, &colorB); + } else { + shading->getColor(tb, &colorB); + } + while (ib - ia > 1) { + for (k = 0; k < nComps; ++k) { + if (fabs(colorB.c[k] - colorA.c[k]) > radialColorDelta) { + break; + } + } + if (k == nComps) { + break; + } + ib = (ia + ib) / 2; + sb = sMin + ((fouble)ib / (fouble)radialMaxSplits) * (sMax - sMin); + tb = t0 + sb * (t1 - t0); + if (tb < t0) { + shading->getColor(t0, &colorB); + } else if (tb > t1) { + shading->getColor(t1, &colorB); + } else { + shading->getColor(tb, &colorB); + } + } + + // compute center and radius of the circle + xb = x0 + sb * (x1 - x0); + yb = y0 + sb * (y1 - y0); + rb = r0 + sb * (r1 - r0); + + // use the average of the colors at the two circles + for (k = 0; k < nComps; ++k) { + colorA.c[k] = 0.5 * (colorA.c[k] + colorB.c[k]); + } + state->setFillColor(&colorA); + out->updateFillColor(state); + + // construct path for first circle + state->moveTo(xa + ra, ya); + for (k = 1; k < n; ++k) { + angle = ((fouble)k / (fouble)n) * 2 * M_PI; + state->lineTo(xa + ra * cos(angle), ya + ra * sin(angle)); + } + state->closePath(); + + // construct and append path for second circle + state->moveTo(xb + rb, yb); + for (k = 1; k < n; ++k) { + angle = ((fouble)k / (fouble)n) * 2 * M_PI; + state->lineTo(xb + rb * cos(angle), yb + rb * sin(angle)); + } + state->closePath(); + + // fill the ring + out->eoFill(state); + state->clearPath(); + + // step to the next value of t + ia = ib; + sa = sb; + ta = tb; + xa = xb; + ya = yb; + ra = rb; + colorA = colorB; + } +} + void Gfx::doEndPath() { if (state->isPath() && clip != clipNone) { state->clip(); @@ -1800,17 +1986,23 @@ void Gfx::opMoveSetShowText(Object args[], int numArgs) { void Gfx::opShowSpaceText(Object args[], int numArgs) { Array *a; Object obj; + int wMode; int i; if (!state->getFont()) { error(getPos(), "No font in show/space"); return; } + wMode = state->getFont()->getWMode(); a = args[0].getArray(); for (i = 0; i < a->getLength(); ++i) { a->get(i, &obj); if (obj.isNum()) { - state->textShift(-obj.getNum() * 0.001 * state->getFontSize()); + if (wMode) { + state->textShift(0, -obj.getNum() * 0.001 * state->getFontSize()); + } else { + state->textShift(-obj.getNum() * 0.001 * state->getFontSize(), 0); + } out->updateTextShift(state, obj.getNum()); } else if (obj.isString()) { doShowText(obj.getString()); @@ -1823,31 +2015,33 @@ void Gfx::opShowSpaceText(Object args[], int numArgs) { void Gfx::doShowText(GString *s) { GfxFont *font; + int wMode; fouble riseX, riseY; CharCode code; Unicode u[8]; - fouble dx, dy, dx2, dy2, tdx, tdy; + fouble x, y, dx, dy, dx2, dy2, curX, curY, tdx, tdy; fouble originX, originY, tOriginX, tOriginY; + fouble oldCTM[6], newCTM[6]; + fouble *mat; + Object charProc; + Dict *resDict; + Parser *oldParser; char *p; - int len, n, uLen, nChars, nSpaces; + int len, n, uLen, nChars, nSpaces, i; if (fontChanged) { out->updateFont(state); fontChanged = gFalse; } font = state->getFont(); + wMode = font->getWMode(); -#if 0 //~type3 - fouble x, y; - fouble oldCTM[6], newCTM[6]; - fouble *mat; - Object charProc; - Parser *oldParser; - int i; - - //~ also check out->renderType3() - if (font->getType() == fontType3) { + if (out->useDrawChar()) { out->beginString(state, s); + } + + // handle a Type 3 char + if (font->getType() == fontType3 && out->interpretType3Chars()) { mat = state->getCTM(); for (i = 0; i < 6; ++i) { oldCTM[i] = mat[i]; @@ -1867,6 +2061,8 @@ void Gfx::doShowText(GString *s) { newCTM[0] *= state->getHorizScaling(); newCTM[2] *= state->getHorizScaling(); state->textTransformDelta(0, state->getRise(), &riseX, &riseY); + curX = state->getCurX(); + curY = state->getCurY(); oldParser = parser; p = s->getCString(); len = s->getLength(); @@ -1874,21 +2070,6 @@ void Gfx::doShowText(GString *s) { n = font->getNextChar(p, len, &code, u, (int)(sizeof(u) / sizeof(Unicode)), &uLen, &dx, &dy, &originX, &originY); - state->transform(state->getCurX() + riseX, state->getCurY() + riseY, - &x, &y); - out->saveState(state); - state = state->save(); - state->setCTM(newCTM[0], newCTM[1], newCTM[2], newCTM[3], x, y); - //~ out->updateCTM(???) - ((Gfx8BitFont *)font)->getCharProc(code, &charProc); - if (charProc.isStream()) { - display(&charProc, gFalse); - } else { - error(getPos(), "Missing or bad Type3 CharProc entry"); - } - state = state->restore(); - out->restoreState(state); - charProc.free(); dx = dx * state->getFontSize() + state->getCharSpace(); if (n == 1 && *p == ' ') { dx += state->getWordSpace(); @@ -1896,31 +2077,61 @@ void Gfx::doShowText(GString *s) { dx *= state->getHorizScaling(); dy *= state->getFontSize(); state->textTransformDelta(dx, dy, &tdx, &tdy); - state->shift(tdx, tdy); + state->transform(curX + riseX, curY + riseY, &x, &y); + out->saveState(state); + state = state->save(); + state->setCTM(newCTM[0], newCTM[1], newCTM[2], newCTM[3], x, y); + //~ out->updateCTM(???) + if (!out->beginType3Char(state, code, u, uLen)) { + ((Gfx8BitFont *)font)->getCharProc(code, &charProc); + if ((resDict = ((Gfx8BitFont *)font)->getResources())) { + pushResources(resDict); + } + if (charProc.isStream()) { + display(&charProc, gFalse); + } else { + error(getPos(), "Missing or bad Type3 CharProc entry"); + } + out->endType3Char(state); + if (resDict) { + popResources(); + } + charProc.free(); + } + state = state->restore(); + out->restoreState(state); + // GfxState::restore() does *not* restore the current position, + // so we track it here with (curX, curY) + curX += tdx; + curY += tdy; + state->moveTo(curX, curY); p += n; len -= n; } parser = oldParser; - out->endString(state); - return; - } -#endif - if (out->useDrawChar()) { + } else if (out->useDrawChar()) { state->textTransformDelta(0, state->getRise(), &riseX, &riseY); - out->beginString(state, s); p = s->getCString(); len = s->getLength(); while (len > 0) { n = font->getNextChar(p, len, &code, u, (int)(sizeof(u) / sizeof(Unicode)), &uLen, &dx, &dy, &originX, &originY); - dx = dx * state->getFontSize() + state->getCharSpace(); - if (n == 1 && *p == ' ') { - dx += state->getWordSpace(); + if (wMode) { + dx *= state->getFontSize(); + dy = dy * state->getFontSize() + state->getCharSpace(); + if (n == 1 && *p == ' ') { + dy += state->getWordSpace(); + } + } else { + dx = dx * state->getFontSize() + state->getCharSpace(); + if (n == 1 && *p == ' ') { + dx += state->getWordSpace(); + } + dx *= state->getHorizScaling(); + dy *= state->getFontSize(); } - dx *= state->getHorizScaling(); - dy *= state->getFontSize(); state->textTransformDelta(dx, dy, &tdx, &tdy); originX *= state->getFontSize(); originY *= state->getFontSize(); @@ -1931,7 +2142,6 @@ void Gfx::doShowText(GString *s) { p += n; len -= n; } - out->endString(state); } else { dx = dy = 0; @@ -1951,15 +2161,28 @@ void Gfx::doShowText(GString *s) { p += n; len -= n; } - dx = dx * state->getFontSize() - + nChars * state->getCharSpace() - + nSpaces * state->getWordSpace(); - dx *= state->getHorizScaling(); - dy *= state->getFontSize(); + if (wMode) { + dx *= state->getFontSize(); + dy = dy * state->getFontSize() + + nChars * state->getCharSpace() + + nSpaces * state->getWordSpace(); + } else { + dx = dx * state->getFontSize() + + nChars * state->getCharSpace() + + nSpaces * state->getWordSpace(); + dx *= state->getHorizScaling(); + dy *= state->getFontSize(); + } state->textTransformDelta(dx, dy, &tdx, &tdy); out->drawString(state, s); state->shift(tdx, tdy); } + + if (out->useDrawChar()) { + out->endString(state); + } + + updateLevel += 10 * s->getLength(); } //------------------------------------------------------------------------ @@ -1967,7 +2190,7 @@ void Gfx::doShowText(GString *s) { //------------------------------------------------------------------------ void Gfx::opXObject(Object args[], int numArgs) { - Object obj1, obj2, refObj; + Object obj1, obj2, obj3, refObj; #if OPI_SUPPORT Object opiDict; #endif @@ -1993,6 +2216,10 @@ void Gfx::opXObject(Object args[], int numArgs) { refObj.free(); } else if (obj2.isName("Form")) { doForm(&obj1); + } else if (obj2.isName("PS")) { + obj1.streamGetDict()->lookup("Level1", &obj3); + out->psXObject(obj1.getStream(), + obj3.isStream() ? obj3.getStream() : (Stream *)NULL); } else if (obj2.isName()) { error(getPos(), "Unknown XObject subtype '%s'", obj2.getName()); } else { @@ -2148,6 +2375,11 @@ void Gfx::doImage(Object *ref, Stream *str, GBool inlineImg) { maskObj.free(); } + if ((i = width * height) > 1000) { + i = 1000; + } + updateLevel += i; + return; err2: @@ -2215,19 +2447,22 @@ void Gfx::doForm(Object *str) { resObj.free(); } -void Gfx::doWidgetForm(Object *str, fouble xMin, fouble yMin, - fouble xMax, fouble yMax) { +void Gfx::doAnnot(Object *str, fouble xMin, fouble yMin, + fouble xMax, fouble yMax) { Dict *dict, *resDict; Object matrixObj, bboxObj, resObj; Object obj1; - fouble m[6], bbox[6]; - fouble sx, sy; + fouble m[6], bbox[6], ictm[6]; + fouble *ctm; + fouble formX0, formY0, formX1, formY1; + fouble annotX0, annotY0, annotX1, annotY1; + fouble det, x, y, sx, sy; int i; // get stream dict dict = str->streamGetDict(); - // get bounding box + // get the form bounding box dict->lookup("BBox", &bboxObj); if (!bboxObj.isArray()) { bboxObj.free(); @@ -2241,7 +2476,7 @@ void Gfx::doWidgetForm(Object *str, fouble xMin, fouble yMin, } bboxObj.free(); - // get matrix + // get the form matrix dict->lookup("Matrix", &matrixObj); if (matrixObj.isArray()) { for (i = 0; i < 6; ++i) { @@ -2256,16 +2491,64 @@ void Gfx::doWidgetForm(Object *str, fouble xMin, fouble yMin, } matrixObj.free(); - // scale form bbox to widget rectangle - sx = fabs((xMax - xMin) / (bbox[2] - bbox[0])); - sy = fabs((yMax - yMin) / (bbox[3] - bbox[1])); - m[0] *= sx; m[1] *= sy; - m[2] *= sx; m[3] *= sy; - m[4] *= sx; m[5] *= sy; + // transform the form bbox from form space to user space + formX0 = bbox[0] * m[0] + bbox[1] * m[2] + m[4]; + formY0 = bbox[0] * m[1] + bbox[1] * m[3] + m[5]; + formX1 = bbox[2] * m[0] + bbox[3] * m[2] + m[4]; + formY1 = bbox[2] * m[1] + bbox[3] * m[3] + m[5]; + + // transform the annotation bbox from default user space to user + // space: (bbox * baseMatrix) * iCTM + ctm = state->getCTM(); + det = 1 / (ctm[0] * ctm[3] - ctm[1] * ctm[2]); + ictm[0] = ctm[3] * det; + ictm[1] = -ctm[1] * det; + ictm[2] = -ctm[2] * det; + ictm[3] = ctm[0] * det; + ictm[4] = (ctm[2] * ctm[5] - ctm[3] * ctm[4]) * det; + ictm[5] = (ctm[1] * ctm[4] - ctm[0] * ctm[5]) * det; + x = baseMatrix[0] * xMin + baseMatrix[2] * yMin + baseMatrix[4]; + y = baseMatrix[1] * xMin + baseMatrix[3] * yMin + baseMatrix[5]; + annotX0 = ictm[0] * x + ictm[2] * y + ictm[4]; + annotY0 = ictm[1] * x + ictm[3] * y + ictm[5]; + x = baseMatrix[0] * xMax + baseMatrix[2] * yMax + baseMatrix[4]; + y = baseMatrix[1] * xMax + baseMatrix[3] * yMax + baseMatrix[5]; + annotX1 = ictm[0] * x + ictm[2] * y + ictm[4]; + annotY1 = ictm[1] * x + ictm[3] * y + ictm[5]; + + // swap min/max coords + if (formX0 > formX1) { + x = formX0; formX0 = formX1; formX1 = x; + } + if (formY0 > formY1) { + y = formY0; formY0 = formY1; formY1 = y; + } + if (annotX0 > annotX1) { + x = annotX0; annotX0 = annotX1; annotX1 = x; + } + if (annotY0 > annotY1) { + y = annotY0; annotY0 = annotY1; annotY1 = y; + } - // translate to widget rectangle - m[4] += xMin; - m[5] += yMin; + // scale the form to fit the annotation bbox + if (formX1 == formX0) { + // this shouldn't happen + sx = 1; + } else { + sx = (annotX1 - annotX0) / (formX1 - formX0); + } + if (formY1 == formY0) { + // this shouldn't happen + sy = 1; + } else { + sy = (annotY1 - annotY0) / (formY1 - formY0); + } + m[0] *= sx; + m[2] *= sx; + m[4] = (m[4] - formX0) * sx + annotX0; + m[1] *= sy; + m[3] *= sy; + m[5] = (m[5] - formY0) * sy + annotY0; // get resources dict->lookup("Resources", &resObj); @@ -2281,11 +2564,10 @@ void Gfx::doWidgetForm(Object *str, fouble xMin, fouble yMin, void Gfx::doForm1(Object *str, Dict *resDict, fouble *matrix, fouble *bbox) { Parser *oldParser; fouble oldBaseMatrix[6]; - GfxResources *resPtr; int i; // push new resources on stack - res = new GfxResources(xref, resDict, res); + pushResources(resDict); // save current graphics state out->saveState(state); @@ -2332,11 +2614,21 @@ void Gfx::doForm1(Object *str, Dict *resDict, fouble *matrix, fouble *bbox) { out->restoreState(state); // pop resource stack + popResources(); + + return; +} + +void Gfx::pushResources(Dict *resDict) { + res = new GfxResources(xref, resDict, res); +} + +void Gfx::popResources() { + GfxResources *resPtr; + resPtr = res->getNext(); delete res; res = resPtr; - - return; } //------------------------------------------------------------------------ @@ -2378,19 +2670,24 @@ Stream *Gfx::buildImageStream() { if (!obj.isName()) { error(getPos(), "Inline image dictionary key must be a name object"); obj.free(); - parser->getObj(&obj); } else { key = copyString(obj.getName()); obj.free(); parser->getObj(&obj); - if (obj.isEOF() || obj.isError()) + if (obj.isEOF() || obj.isError()) { + gfree(key); break; + } dict.dictAdd(key, &obj); } parser->getObj(&obj); } - if (obj.isEOF()) + if (obj.isEOF()) { error(getPos(), "End of file in inline image"); + obj.free(); + dict.free(); + return NULL; + } obj.free(); // make stream @@ -2413,11 +2710,13 @@ void Gfx::opEndImage(Object args[], int numArgs) { //------------------------------------------------------------------------ void Gfx::opSetCharWidth(Object args[], int numArgs) { - error(getPos(), "Encountered 'd0' operator in content stream"); + out->type3D0(state, args[0].getNum(), args[1].getNum()); } void Gfx::opSetCacheDevice(Object args[], int numArgs) { - error(getPos(), "Encountered 'd1' operator in content stream"); + out->type3D1(state, args[0].getNum(), args[1].getNum(), + args[2].getNum(), args[3].getNum(), + args[4].getNum(), args[5].getNum()); } //------------------------------------------------------------------------ |