52 lines
2.1 KiB
Diff
52 lines
2.1 KiB
Diff
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diff -up ghostscript-9.00/psi/fapi_ft.c.glyph-stretch-691920 ghostscript-9.00/psi/fapi_ft.c
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--- ghostscript-9.00/psi/fapi_ft.c.glyph-stretch-691920 2010-09-14 15:56:26.000000000 +0100
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+++ ghostscript-9.00/psi/fapi_ft.c 2011-02-02 13:20:51.736932787 +0000
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@@ -652,12 +652,43 @@ transform_decompose(FT_Matrix *a_transfo
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{
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double scalex, scaley, fact = 1.0;
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FT_Matrix ftscale_mat;
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- FT_UInt xres = *xresp;
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- FT_UInt yres = *yresp;
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+ FT_UInt xres;
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+ FT_UInt yres;
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+ FT_Vector vectx, vecty;
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- scalex = hypot ((double)a_transform->xx, (double)a_transform->xy) / 65536.0;
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- scaley = hypot ((double)a_transform->yx, (double)a_transform->yy) / 65536.0;
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+ scalex = hypot ((double)a_transform->xx, (double)a_transform->xy);
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+ scaley = hypot ((double)a_transform->yx, (double)a_transform->yy);
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+ if (*xresp != *yresp) {
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+ /* We need to give the resolution in "glyph space", taking account of rotation and
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+ * shearing, so that makes life a little complicated when non-square resolutions
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+ * are used.
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+ */
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+ ftscale_mat.xx = scalex;
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+ ftscale_mat.xy = ftscale_mat.yx = 0;
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+ ftscale_mat.yy = scaley;
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+
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+ FT_Matrix_Invert(&ftscale_mat);
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+
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+ FT_Matrix_Multiply (a_transform, &ftscale_mat);
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+
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+ vectx.x = *xresp << 16;
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+ vecty.y = *yresp << 16;
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+ vectx.y = vecty.x = 0;
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+
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+ FT_Vector_Transform (&vectx, &ftscale_mat);
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+ FT_Vector_Transform (&vecty, &ftscale_mat);
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+ xres = (FT_UInt)((hypot ((double)vectx.x, (double)vecty.x) / 65536.0) + 0.5);
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+ yres = (FT_UInt)((hypot ((double)vectx.y, (double)vecty.y) / 65536.0) + 0.5);
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+ }
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+ else {
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+ /* Life is considerably easier when square resolutions are in use! */
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+ xres = *xresp;
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+ yres = *yresp;
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+ }
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+
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+ scalex /= 65536.0;
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+ scaley /= 65536.0;
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/* FT clamps the width and height to a lower limit of 1.0 units
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* (note: as FT stores it in 64ths of a unit, that is 64)
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* So if either the width or the height are <1.0 here, we scale
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