153 lines
4.9 KiB
TeX
153 lines
4.9 KiB
TeX
/* CHAPTER 3. Pages */
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/*
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* cpdf_scalePages(pdf, range, x scale, y scale) scales the page dimensions
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* and content by the given scale, about (0, 0). Other boxes (crop etc. are
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* altered as appropriate)
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*/
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void cpdf_scalePages(int, int, double, double);
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/*
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* cpdf_scaleToFit(pdf, range, width height, scale) scales the content to fit
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* new page dimensions (width x height) multiplied by scale (typically 1.0).
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* Other boxed (crop etc. are altered as appropriate)
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*/
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void cpdf_scaleToFit(int, int, double, double, double);
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/*
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* cpdf_scaleToFitPaper(pdf, range, papersize, scale) scales the page content
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* to fit the given page size, possibly multiplied by scale (typically 1.0)
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*/
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void cpdf_scaleToFitPaper(int, int, enum cpdf_papersize, double);
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/* Positions on the page. Used for scaling about a point, and adding text. */
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enum cpdf_anchor {
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cpdf_posCentre, /* Absolute centre */
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cpdf_posLeft, /* Absolute left */
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cpdf_posRight, /* Absolute right */
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cpdf_top, /* Top top centre of the page */
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cpdf_topLeft, /* The top left of the page */
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cpdf_topRight, /* The top right of the page */
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cpdf_left, /* The left hand side of the page, halfway
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* down */
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cpdf_bottomLeft, /* The bottom left of the page */
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cpdf_bottom, /* The bottom middle of the page */
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cpdf_bottomRight, /* The bottom right of the page */
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cpdf_right, /* The right hand side of the page, halfway
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* down */
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cpdf_diagonal, /* Diagonal, bottom left to top right */
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cpdf_reverseDiagonal /* Diagonal, top left to bottom right */
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};
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/*
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* A cpdf_position is an anchor (above) and zero or one or two parameters
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* (cpdf_coord1, cpdf_coord2).
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*
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* cpdf_posCentre: Two parameters, x and y
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*
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* cpdf_posLeft: Two parameters, x and y
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*
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* cpdf_posRight: Two parameters, x and y
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*
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* cpdf_top: One parameter -- distance from top
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*
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* cpdf_topLeft: One parameter -- distance from top left
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*
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* cpdf_topRight: One parameter -- distance from top right
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*
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* cpdf_left: One parameter -- distance from left middle
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*
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* cpdf_bottomLeft: One parameter -- distance from bottom left
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*
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* cpdf_bottom: One parameter -- distance from bottom
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*
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* cpdf_bottomRight: One parameter -- distance from bottom right
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*
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* cpdf_right: One parameter -- distance from right
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*
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* cpdf_diagonal: Zero parameters
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*
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* cpdf_reverseDiagonal: Zero parameters
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*/
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struct cpdf_position {
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int cpdf_anchor; /* Position anchor */
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double cpdf_coord1; /* Parameter one */
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double cpdf_coord2; /* Parameter two */
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};
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/*
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* cpdf_scaleContents(pdf, range, position, scale) scales the contents of the
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* pages in the range about the point given by the cpdf_position, by the
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* scale given.
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*/
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void cpdf_scaleContents(int, int, struct cpdf_position, double);
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/*
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* cpdf_shiftContents(pdf, range, dx, dy) shifts the content of the pages in
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* the range.
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*/
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void cpdf_shiftContents(int, int, double, double);
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/*
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* cpdf_rotate(pdf, range, rotation) changes the viewing rotation to an
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* absolute value. Appropriate rotations are 0, 90, 180, 270.
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*/
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void cpdf_rotate(int, int, int);
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/*
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* cpdf_rotateBy(pdf, range, rotation) changes the viewing rotation by a
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* given number of degrees. Appropriate values are 90, 180, 270.
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*/
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void cpdf_rotateBy(int, int, int);
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/*
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* cpdf_rotateContents(pdf, range, angle) rotates the content about the
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* centre of the page by the given number of degrees, in a clockwise
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* direction.
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*/
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void cpdf_rotateContents(int, int, double);
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/*
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* cpdf_upright(pdf, range) changes the viewing rotation of the pages in the
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* range, counter-rotating the dimensions and content such that there is no
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* visual change.
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*/
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void cpdf_upright(int, int);
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/* cpdf_hFlip(pdf, range) flips horizontally the pages in the range. */
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void cpdf_hFlip(int, int);
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/* cpdf_vFlip(pdf, range) flips vertically the pages in the range. */
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void cpdf_vFlip(int, int);
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/*
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* cpdf_crop(pdf, range, x, y, w, h) crops a page, replacing any existing
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* crop box. The dimensions are in points.
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*/
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void cpdf_crop(int, int, double, double, double, double);
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/* cpdf_removeCrop(pdf, range) removes any crop box from pages in the range. */
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void cpdf_removeCrop(int, int);
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/* cpdf_removeTrim(pdf, range) removes any crop box from pages in the range. */
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void cpdf_removeTrim(int, int);
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/* cpdf_removeArt(pdf, range) removes any crop box from pages in the range. */
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void cpdf_removeArt(int, int);
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/* cpdf_removeBleed(pdf, range) removes any crop box from pages in the range. */
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void cpdf_removeBleed(int, int);
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/*
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* cpdf_trimMarks(pdf, range) adds trim marks to the given pages, if the
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* trimbox exists.
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*/
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void cpdf_trimMarks(int, int);
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/* cpdf_showBoxes(pdf, range) shows the boxes on the given pages, for debug. */
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void cpdf_showBoxes(int, int);
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/* cpdf_hardBox make a given box a 'hard box' i.e clips it explicitly. */
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void cpdf_hardBox(int, int, const char[]);
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