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-rw-r--r--kpdf/xpdf/splash/SplashFTFont.cc375
1 files changed, 0 insertions, 375 deletions
diff --git a/kpdf/xpdf/splash/SplashFTFont.cc b/kpdf/xpdf/splash/SplashFTFont.cc
deleted file mode 100644
index 42d92af4..00000000
--- a/kpdf/xpdf/splash/SplashFTFont.cc
+++ /dev/null
@@ -1,375 +0,0 @@
-//========================================================================
-//
-// SplashFTFont.cc
-//
-//========================================================================
-
-#include <aconf.h>
-
-#if HAVE_FREETYPE_FREETYPE_H || HAVE_FREETYPE_H
-
-#ifdef USE_GCC_PRAGMAS
-#pragma implementation
-#endif
-
-#include <ft2build.h>
-#include FT_OUTLINE_H
-#include FT_SIZES_H
-#include FT_GLYPH_H
-#include "gmem.h"
-#include "SplashMath.h"
-#include "SplashGlyphBitmap.h"
-#include "SplashPath.h"
-#include "SplashFTFontEngine.h"
-#include "SplashFTFontFile.h"
-#include "SplashFTFont.h"
-
-//------------------------------------------------------------------------
-
-static int glyphPathMoveTo(const FT_Vector *pt, void *path);
-static int glyphPathLineTo(const FT_Vector *pt, void *path);
-static int glyphPathConicTo(const FT_Vector *ctrl, const FT_Vector *pt,
- void *path);
-static int glyphPathCubicTo(const FT_Vector *ctrl1, const FT_Vector *ctrl2,
- const FT_Vector *pt, void *path);
-
-//------------------------------------------------------------------------
-// SplashFTFont
-//------------------------------------------------------------------------
-
-SplashFTFont::SplashFTFont(SplashFTFontFile *fontFileA, SplashCoord *matA,
- SplashCoord *textMatA):
- SplashFont(fontFileA, matA, textMatA, fontFileA->engine->aa)
-{
- FT_Face face;
- SplashCoord size, div;
- int x, y;
-
- face = fontFileA->face;
- if (FT_New_Size(face, &sizeObj)) {
- return;
- }
- face->size = sizeObj;
- size = splashSqrt(mat[2]*mat[2] + mat[3]*mat[3]);
- if (FT_Set_Pixel_Sizes(face, 0, (int)size)) {
- return;
- }
- // if the textMat values are too small, FreeType's fixed point
- // arithmetic doesn't work so well
- textScale = splashSqrt(textMat[2]*textMat[2] + textMat[3]*textMat[3]) / size;
-
- div = face->bbox.xMax > 20000 ? 65536 : 1;
-
- // transform the four corners of the font bounding box -- the min
- // and max values form the bounding box of the transformed font
- x = (int)((mat[0] * face->bbox.xMin + mat[2] * face->bbox.yMin) /
- (div * face->units_per_EM));
- xMin = xMax = x;
- y = (int)((mat[1] * face->bbox.xMin + mat[3] * face->bbox.yMin) /
- (div * face->units_per_EM));
- yMin = yMax = y;
- x = (int)((mat[0] * face->bbox.xMin + mat[2] * face->bbox.yMax) /
- (div * face->units_per_EM));
- if (x < xMin) {
- xMin = x;
- } else if (x > xMax) {
- xMax = x;
- }
- y = (int)((mat[1] * face->bbox.xMin + mat[3] * face->bbox.yMax) /
- (div * face->units_per_EM));
- if (y < yMin) {
- yMin = y;
- } else if (y > yMax) {
- yMax = y;
- }
- x = (int)((mat[0] * face->bbox.xMax + mat[2] * face->bbox.yMin) /
- (div * face->units_per_EM));
- if (x < xMin) {
- xMin = x;
- } else if (x > xMax) {
- xMax = x;
- }
- y = (int)((mat[1] * face->bbox.xMax + mat[3] * face->bbox.yMin) /
- (div * face->units_per_EM));
- if (y < yMin) {
- yMin = y;
- } else if (y > yMax) {
- yMax = y;
- }
- x = (int)((mat[0] * face->bbox.xMax + mat[2] * face->bbox.yMax) /
- (div * face->units_per_EM));
- if (x < xMin) {
- xMin = x;
- } else if (x > xMax) {
- xMax = x;
- }
- y = (int)((mat[1] * face->bbox.xMax + mat[3] * face->bbox.yMax) /
- (div * face->units_per_EM));
- if (y < yMin) {
- yMin = y;
- } else if (y > yMax) {
- yMax = y;
- }
- // This is a kludge: some buggy PDF generators embed fonts with
- // zero bounding boxes.
- if (xMax == xMin) {
- xMin = 0;
- xMax = (int)size;
- }
- if (yMax == yMin) {
- yMin = 0;
- yMax = (int)((SplashCoord)1.2 * size);
- }
-
- // compute the transform matrix
-#if USE_FIXEDPOINT
- matrix.xx = (FT_Fixed)((mat[0] / size).getRaw());
- matrix.yx = (FT_Fixed)((mat[1] / size).getRaw());
- matrix.xy = (FT_Fixed)((mat[2] / size).getRaw());
- matrix.yy = (FT_Fixed)((mat[3] / size).getRaw());
- textMatrix.xx = (FT_Fixed)((textMat[0] / (size * textScale)).getRaw());
- textMatrix.yx = (FT_Fixed)((textMat[1] / (size * textScale)).getRaw());
- textMatrix.xy = (FT_Fixed)((textMat[2] / (size * textScale)).getRaw());
- textMatrix.yy = (FT_Fixed)((textMat[3] / (size * textScale)).getRaw());
-#else
- matrix.xx = (FT_Fixed)((mat[0] / size) * 65536);
- matrix.yx = (FT_Fixed)((mat[1] / size) * 65536);
- matrix.xy = (FT_Fixed)((mat[2] / size) * 65536);
- matrix.yy = (FT_Fixed)((mat[3] / size) * 65536);
- textMatrix.xx = (FT_Fixed)((textMat[0] / (size * textScale)) * 65536);
- textMatrix.yx = (FT_Fixed)((textMat[1] / (size * textScale)) * 65536);
- textMatrix.xy = (FT_Fixed)((textMat[2] / (size * textScale)) * 65536);
- textMatrix.yy = (FT_Fixed)((textMat[3] / (size * textScale)) * 65536);
-#endif
-}
-
-SplashFTFont::~SplashFTFont() {
-}
-
-GBool SplashFTFont::getGlyph(int c, int xFrac, int /*yFrac*/,
- SplashGlyphBitmap *bitmap, int x0, int y0, SplashClip *clip, SplashClipResult *clipRes) {
- return SplashFont::getGlyph(c, xFrac, 0, bitmap, x0, y0, clip, clipRes);
-}
-
-GBool SplashFTFont::makeGlyph(int c, int xFrac, int /*yFrac*/,
- SplashGlyphBitmap *bitmap, int x0, int y0, SplashClip *clip, SplashClipResult *clipRes) {
- SplashFTFontFile *ff;
- FT_Vector offset;
- FT_GlyphSlot slot;
- FT_UInt gid;
- int rowSize;
- Guchar *p, *q;
- int i;
-
- ff = (SplashFTFontFile *)fontFile;
-
- ff->face->size = sizeObj;
- offset.x = (FT_Pos)(int)((SplashCoord)xFrac * splashFontFractionMul * 64);
- offset.y = 0;
- FT_Set_Transform(ff->face, &matrix, &offset);
- slot = ff->face->glyph;
-
- if (ff->codeToGID && c < ff->codeToGIDLen) {
- gid = (FT_UInt)ff->codeToGID[c];
- } else {
- gid = (FT_UInt)c;
- }
- if (ff->trueType && gid == 0) {
- // skip the TrueType notdef glyph
- return gFalse;
- }
-
- // if we have the FT2 bytecode interpreter, autohinting won't be used
-#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
- if (FT_Load_Glyph(ff->face, gid,
- aa ? FT_LOAD_NO_BITMAP : FT_LOAD_DEFAULT)) {
- return gFalse;
- }
-#else
- // FT2's autohinting doesn't always work very well (especially with
- // font subsets), so turn it off if anti-aliasing is enabled; if
- // anti-aliasing is disabled, this seems to be a tossup - some fonts
- // look better with hinting, some without, so leave hinting on
- if (FT_Load_Glyph(ff->face, gid,
- aa ? FT_LOAD_NO_HINTING | FT_LOAD_NO_BITMAP
- : FT_LOAD_DEFAULT)) {
- return gFalse;
- }
-#endif
-
- FT_Glyph_Metrics *glyphMetrics = &(ff->face->glyph->metrics);
- // prelimirary values from FT_Glyph_Metrics
- bitmap->x = splashRound(-glyphMetrics->horiBearingX / 64.0);
- bitmap->y = splashRound(glyphMetrics->horiBearingY / 64.0);
- bitmap->w = splashRound(glyphMetrics->width / 64.0);
- bitmap->h = splashRound(glyphMetrics->height / 64.0);
-
- *clipRes = clip->testRect(x0 - bitmap->x,
- y0 - bitmap->y,
- x0 - bitmap->x + bitmap->w - 1,
- y0 - bitmap->y + bitmap->h - 1);
- if (*clipRes == splashClipAllOutside)
- {
- bitmap->freeData = gFalse;
- return gTrue;
- }
-
- if (FT_Render_Glyph(slot, aa ? ft_render_mode_normal
- : ft_render_mode_mono)) {
- return gFalse;
- }
-
- bitmap->x = -slot->bitmap_left;
- bitmap->y = slot->bitmap_top;
- bitmap->w = slot->bitmap.width;
- bitmap->h = slot->bitmap.rows;
- bitmap->aa = aa;
- if (aa) {
- rowSize = bitmap->w;
- } else {
- rowSize = (bitmap->w + 7) >> 3;
- }
- bitmap->data = (Guchar *)gmalloc(rowSize * bitmap->h);
- bitmap->freeData = gTrue;
- for (i = 0, p = bitmap->data, q = slot->bitmap.buffer;
- i < bitmap->h;
- ++i, p += rowSize, q += slot->bitmap.pitch) {
- memcpy(p, q, rowSize);
- }
-
- return gTrue;
-}
-
-struct SplashFTFontPath {
- SplashPath *path;
- SplashCoord textScale;
- GBool needClose;
-};
-
-SplashPath *SplashFTFont::getGlyphPath(int c) {
- static FT_Outline_Funcs outlineFuncs = {
-#if FREETYPE_MINOR <= 1
- (int (*)(FT_Vector *, void *))&glyphPathMoveTo,
- (int (*)(FT_Vector *, void *))&glyphPathLineTo,
- (int (*)(FT_Vector *, FT_Vector *, void *))&glyphPathConicTo,
- (int (*)(FT_Vector *, FT_Vector *, FT_Vector *, void *))&glyphPathCubicTo,
-#else
- &glyphPathMoveTo,
- &glyphPathLineTo,
- &glyphPathConicTo,
- &glyphPathCubicTo,
-#endif
- 0, 0
- };
- SplashFTFontFile *ff;
- SplashFTFontPath path;
- FT_GlyphSlot slot;
- FT_UInt gid;
- FT_Glyph glyph;
-
- ff = (SplashFTFontFile *)fontFile;
- ff->face->size = sizeObj;
- FT_Set_Transform(ff->face, &textMatrix, NULL);
- slot = ff->face->glyph;
- if (ff->codeToGID && c < ff->codeToGIDLen) {
- gid = ff->codeToGID[c];
- } else {
- gid = (FT_UInt)c;
- }
- if (ff->trueType && gid == 0) {
- // skip the TrueType notdef glyph
- return NULL;
- }
- if (FT_Load_Glyph(ff->face, gid, FT_LOAD_NO_BITMAP)) {
- return NULL;
- }
- if (FT_Get_Glyph(slot, &glyph)) {
- return NULL;
- }
- path.path = new SplashPath();
- path.textScale = textScale;
- path.needClose = gFalse;
- FT_Outline_Decompose(&((FT_OutlineGlyph)glyph)->outline,
- &outlineFuncs, &path);
- if (path.needClose) {
- path.path->close();
- }
- FT_Done_Glyph(glyph);
- return path.path;
-}
-
-static int glyphPathMoveTo(const FT_Vector *pt, void *path) {
- SplashFTFontPath *p = (SplashFTFontPath *)path;
-
- if (p->needClose) {
- p->path->close();
- p->needClose = gFalse;
- }
- p->path->moveTo((SplashCoord)pt->x * p->textScale / 64.0,
- (SplashCoord)pt->y * p->textScale / 64.0);
- return 0;
-}
-
-static int glyphPathLineTo(const FT_Vector *pt, void *path) {
- SplashFTFontPath *p = (SplashFTFontPath *)path;
-
- p->path->lineTo((SplashCoord)pt->x * p->textScale / 64.0,
- (SplashCoord)pt->y * p->textScale / 64.0);
- p->needClose = gTrue;
- return 0;
-}
-
-static int glyphPathConicTo(const FT_Vector *ctrl, const FT_Vector *pt,
- void *path) {
- SplashFTFontPath *p = (SplashFTFontPath *)path;
- SplashCoord x0, y0, x1, y1, x2, y2, x3, y3, xc, yc;
-
- if (!p->path->getCurPt(&x0, &y0)) {
- return 0;
- }
- xc = (SplashCoord)ctrl->x * p->textScale / 64.0;
- yc = (SplashCoord)ctrl->y * p->textScale / 64.0;
- x3 = (SplashCoord)pt->x * p->textScale / 64.0;
- y3 = (SplashCoord)pt->y * p->textScale / 64.0;
-
- // A second-order Bezier curve is defined by two endpoints, p0 and
- // p3, and one control point, pc:
- //
- // p(t) = (1-t)^2*p0 + t*(1-t)*pc + t^2*p3
- //
- // A third-order Bezier curve is defined by the same two endpoints,
- // p0 and p3, and two control points, p1 and p2:
- //
- // p(t) = (1-t)^3*p0 + 3t*(1-t)^2*p1 + 3t^2*(1-t)*p2 + t^3*p3
- //
- // Applying some algebra, we can convert a second-order curve to a
- // third-order curve:
- //
- // p1 = (1/3) * (p0 + 2pc)
- // p2 = (1/3) * (2pc + p3)
-
- x1 = (SplashCoord)(1.0 / 3.0) * (x0 + (SplashCoord)2 * xc);
- y1 = (SplashCoord)(1.0 / 3.0) * (y0 + (SplashCoord)2 * yc);
- x2 = (SplashCoord)(1.0 / 3.0) * ((SplashCoord)2 * xc + x3);
- y2 = (SplashCoord)(1.0 / 3.0) * ((SplashCoord)2 * yc + y3);
-
- p->path->curveTo(x1, y1, x2, y2, x3, y3);
- p->needClose = gTrue;
- return 0;
-}
-
-static int glyphPathCubicTo(const FT_Vector *ctrl1, const FT_Vector *ctrl2,
- const FT_Vector *pt, void *path) {
- SplashFTFontPath *p = (SplashFTFontPath *)path;
-
- p->path->curveTo((SplashCoord)ctrl1->x * p->textScale / 64.0,
- (SplashCoord)ctrl1->y * p->textScale / 64.0,
- (SplashCoord)ctrl2->x * p->textScale / 64.0,
- (SplashCoord)ctrl2->y * p->textScale / 64.0,
- (SplashCoord)pt->x * p->textScale / 64.0,
- (SplashCoord)pt->y * p->textScale / 64.0);
- p->needClose = gTrue;
- return 0;
-}
-
-#endif // HAVE_FREETYPE_FREETYPE_H || HAVE_FREETYPE_H
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