Add content convenience functions.

This commit is contained in:
Michael R Sweet 2021-05-24 19:33:40 -04:00
parent 0ae8ddc515
commit eb4477ce9b
No known key found for this signature in database
GPG Key ID: 999559A027815955
4 changed files with 1015 additions and 34 deletions

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@ -39,6 +39,7 @@ prefix = /usr/local
LIBOBJS = \
pdfio-array.o \
pdfio-common.o \
pdfio-content.o \
pdfio-dict.o \
pdfio-file.o \
pdfio-object.o \
@ -78,7 +79,7 @@ clean:
# Install everything
install: $(TARGETS)
-mkdir -p $(DESTDIR)$(prefix)/include
cp pdfio.h $(DESTDIR)$(prefix)/include
cp pdfio.h pdfio-content.h $(DESTDIR)$(prefix)/include
-mkdir -p $(DESTDIR)$(prefix)/lib
cp libpdfio.a $(DESTDIR)$(prefix)/lib
$(RANLIB) $(DESTDIR)$(prefix)/lib/libpdfio.a
@ -124,13 +125,14 @@ libpdfio.1.dylib: $(LIBOBJS)
# pdfio test program
testpdfio: testpdfio.o libpdfio.a
testpdfio: testpdfio.o libpdfio.a
$(CC) $(LDFLAGS) $(COMMONFLAGS) -o $@ testpdfio.o libpdfio.a $(LIBS)
# Dependencies
$(OBJS): pdfio.h Makefile
$(LIBOBJS): pdfio-private.h
$(OBJS): pdfio.h Makefile
$(LIBOBJS): pdfio-private.h
pdfio-content.o: pdfio-content.h
# Make documentation using Codedoc <https://www.msweet.org/codedoc>

978
pdfio-content.c Normal file
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@ -0,0 +1,978 @@
//
// Content helper functions for pdfio.
//
// Copyright © 2021 by Michael R Sweet.
//
// Licensed under Apache License v2.0. See the file "LICENSE" for more
// information.
//
//
// Include necessary headers...
//
#include "pdfio-content.h"
#include <math.h>
//
// Local functions...
//
static bool write_string(pdfio_stream_t *st, const char *s);
//
// 'pdfioContentBeginText()' - Begin a text block.
//
bool // O - `true` on success, `false` on failure
pdfioContentBeginText(
pdfio_stream_t *st) // I - Stream
{
return (pdfioStreamPuts(st, "BT\n"));
}
//
// 'pdfioContentClip()' - Clip output to the current path.
//
bool // O - `true` on success, `false` on failure
pdfioContentClip(
pdfio_stream_t *st, // I - Stream
bool even_odd) // I - Even/odd fill vs. non-zero winding rule
{
return (pdfioStreamPuts(st, even_odd ? "W*\n" : "W\n"));
}
//
// 'pdfioContentDrawImage()' - Draw an image object.
//
// The object name must be part of the page dictionary resources, typically
// using the @link pdfioPageDictAddImage@ function.
//
bool // O - `true` on success, `false` on failure
pdfioContentDrawImage(
pdfio_stream_t *st, // I - Stream
const char *name) // I - Image name
{
return (pdfioStreamPrintf(st, "/%s Do\n", name));
}
//
// 'pdfioContentEndText()' - End a text block.
//
bool // O - `true` on success, `false` on failure
pdfioContentEndText(pdfio_stream_t *st) // I - Stream
{
return (pdfioStreamPuts(st, "ET\n"));
}
//
// 'pdfioContentFill()' - Fill the current path.
//
bool // O - `true` on success, `false` on failure
pdfioContentFill(
pdfio_stream_t *st, // I - Stream
bool even_odd) // I - Even/odd fill vs. non-zero winding rule
{
return (pdfioStreamPuts(st, even_odd ? "f*\n" : "f\n"));
}
//
// 'pdfioContentFillAndStroke()' - Fill and stroke the current path.
//
bool // O - `true` on success, `false` on failure
pdfioContentFillAndStroke(
pdfio_stream_t *st, // I - Stream
bool even_odd) // I - Even/odd fill vs. non-zero winding
{
return (pdfioStreamPuts(st, even_odd ? "B*\n" : "B\n"));
}
//
// 'pdfioContentMatrixConcat()' - Concatenate a matrix to the current graphics
// state.
//
bool // O - `true` on success, `false` on failure
pdfioContentMatrixConcat(
pdfio_stream_t *st, // I - Stream
pdfio_matrix_t m) // I - Transform matrix
{
return (pdfioStreamPrintf(st, "%g %g %g %g %g %g cm\n", m[0][0], m[0][1], m[1][0], m[1][1], m[2][0], m[2][1]));
}
//
// 'pdfioContentMatrixRotate()' - Rotate the current transform matrix.
//
bool // O - `true` on success, `false` on failure
pdfioContentMatrixRotate(
pdfio_stream_t *st, // I - Stream
float degrees) // I - Rotation angle in degrees counter-clockwise
{
double dcos = cos(degrees / M_PI); // Cosine
double dsin = sin(degrees / M_PI); // Sine
return (pdfioStreamPrintf(st, "%g %g %g %g 0 0 cm\n", dcos, -dsin, dsin, dcos));
}
//
// 'pdfioContentMatrixScale()' - Scale the current transform matrix.
//
bool // O - `true` on success, `false` on failure
pdfioContentMatrixScale(
pdfio_stream_t *st, // I - Stream
float sx, // I - X scale
float sy) // I - Y scale
{
return (pdfioStreamPrintf(st, "%g 0 0 %g 0 0 cm\n", sx, sy));
}
//
// 'pdfioContentMatrixTranslate()' - Translate the current transform matrix.
//
bool // O - `true` on success, `false` on failure
pdfioContentMatrixTranslate(
pdfio_stream_t *st, // I - Stream
float tx, // I - X offset
float ty) // I - Y offset
{
return (pdfioStreamPrintf(st, "1 0 0 1 %g %g cm\n", tx, ty));
}
//
// 'pdfioContentPathClose()' - Close the current path.
//
bool // O - `true` on success, `false` on failure
pdfioContentPathClose(
pdfio_stream_t *st) // I - Stream
{
return (pdfioStreamPuts(st, "h\n"));
}
//
// 'pdfioContentPathCurve()' - Add a Bezier curve with two control points.
//
bool // O - `true` on success, `false` on failure
pdfioContentPathCurve(
pdfio_stream_t *st, // I - Stream
float x1, // I - X position 1
float y1, // I - Y position 1
float x2, // I - X position 2
float y2, // I - Y position 2
float x3, // I - X position 3
float y3) // I - Y position 3
{
return (pdfioStreamPrintf(st, "%g %g %g %g %g %g c\n", x1, y1, x2, y2, x3, y3));
}
//
// 'pdfioContentPathCurve13()' - Add a Bezier curve with an initial control point.
//
bool // O - `true` on success, `false` on failure
pdfioContentPathCurve13(
pdfio_stream_t *st, // I - Stream
float x1, // I - X position 1
float y1, // I - Y position 1
float x3, // I - X position 3
float y3) // I - Y position 3
{
return (pdfioStreamPrintf(st, "%g %g %g %g v\n", x1, y1, x3, y3));
}
//
// 'pdfioContentPathCurve23()' - Add a Bezier curve with a trailing control point.
//
bool // O - `true` on success, `false` on failure
pdfioContentPathCurve23(
pdfio_stream_t *st, // I - Stream
float x2, // I - X position 2
float y2, // I - Y position 2
float x3, // I - X position 3
float y3) // I - Y position 3
{
return (pdfioStreamPrintf(st, "%g %g %g %g y\n", x2, y2, x3, y3));
}
//
// 'pdfioContentPathLineTo()' - Add a straight line to the current path.
//
bool // O - `true` on success, `false` on failure
pdfioContentPathLineTo(
pdfio_stream_t *st, // I - Stream
float x, // I - X position
float y) // I - Y position
{
return (pdfioStreamPrintf(st, "%g %g l\n", x, y));
}
//
// 'pdfioContentPathMoveTo()' - Start a new subpath.
//
bool // O - `true` on success, `false` on failure
pdfioContentPathMoveTo(
pdfio_stream_t *st, // I - Stream
float x, // I - X position
float y) // I - Y position
{
return (pdfioStreamPrintf(st, "%g %g m\n", x, y));
}
//
// 'pdfioContentPathRect()' - Add a rectangle to the current path.
//
bool // O - `true` on success, `false` on failure
pdfioContentPathRect(
pdfio_stream_t *st, // I - Stream
pdfio_rect_t *rect) // I - Rectangle
{
return (pdfioStreamPrintf(st, "%g %g %g %g re\n", rect->x1, rect->y1, rect->x2 - rect->x1, rect->y2 - rect->y1));
}
//
// 'pdfioContentRestore()' - Restore a previous graphics state.
//
bool // O - `true` on success, `false` on failure
pdfioContentRestore(
pdfio_stream_t *st) // I - Stream
{
return (pdfioStreamPuts(st, "Q\n"));
}
//
// 'pdfioContentSave()' - Save the current graphics state.
//
bool // O - `true` on success, `false` on failure
pdfioContentSave(pdfio_stream_t *st) // I - Stream
{
return (pdfioStreamPuts(st, "q\n"));
}
//
// 'pdfioContentSetDashPattern()' - Set the stroke pattern.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetDashPattern(
pdfio_stream_t *st, // I - Stream
int phase, // I - Phase (offset within pattern)
int on, // I - On length
int off) // I - Off length
{
return (pdfioStreamPrintf(st, "[%d %d] %d d\n", on, off, phase));
}
//
// 'pdfioContentSetFillColorDeviceCMYK()' - Set device CMYK fill color.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetFillColorDeviceCMYK(
pdfio_stream_t *st, // I - Stream
float c, // I - Cyan value (0.0 to 1.0)
float m, // I - Magenta value (0.0 to 1.0)
float y, // I - Yellow value (0.0 to 1.0)
float k) // I - Black value (0.0 to 1.0)
{
return (pdfioStreamPrintf(st, "%g %g %g %g k\n", c, m, y, k));
}
//
// 'pdfioContentSetFillColorDeviceGray()' - Set the device gray fill color.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetFillColorDeviceGray(
pdfio_stream_t *st, // I - Stream
float g) // I - Gray value (0.0 to 1.0)
{
return (pdfioStreamPrintf(st, "%g g\n", g));
}
//
// 'pdfioContentSetFillColorDeviceRGB()' - Set the device RGB fill color.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetFillColorDeviceRGB(
pdfio_stream_t *st, // I - Stream
float r, // I - Red value (0.0 to 1.0)
float g, // I - Green value (0.0 to 1.0)
float b) // I - Blue value (0.0 to 1.0)
{
return (pdfioStreamPrintf(st, "%g %g %g rg\n", r, g, b));
}
//
// 'pdfioContentSetFillColorGray()' - Set the calibrated gray fill color.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetFillColorGray(
pdfio_stream_t *st, // I - Stream
float g) // I - Gray value (0.0 to 1.0)
{
return (pdfioStreamPrintf(st, "%g sc\n", g));
}
//
// 'pdfioContentSetFillColorRGB()' - Set the calibrated RGB fill color.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetFillColorRGB(
pdfio_stream_t *st, // I - Stream
float r, // I - Red value (0.0 to 1.0)
float g, // I - Green value (0.0 to 1.0)
float b) // I - Blue value (0.0 to 1.0)
{
return (pdfioStreamPrintf(st, "%g %g %g sc\n", r, g, b));
}
//
// 'pdfioContentSetFillColorSpace()' - Set the fill colorspace.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetFillColorSpace(
pdfio_stream_t *st, // I - Stream
const char *name) // I - Color space name
{
return (pdfioStreamPrintf(st, "/%s cs\n", name));
}
//
// 'pdfioContentSetFlatness()' - Set the flatness tolerance.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetFlatness(
pdfio_stream_t *st, // I - Stream
float flatness) // I - Flatness value (0.0 to 100.0)
{
return (pdfioStreamPrintf(st, "%g i\n", flatness));
}
//
// 'pdfioContentSetLineCap()' - Set the line ends style.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetLineCap(
pdfio_stream_t *st, // I - Stream
pdfio_linecap_t lc) // I - Line cap value
{
return (pdfioStreamPrintf(st, "%d J\n", lc));
}
//
// 'pdfioContentSetLineJoin()' - Set the line joining style.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetLineJoin(
pdfio_stream_t *st, // I - Stream
pdfio_linejoin_t lj) // I - Line join value
{
return (pdfioStreamPrintf(st, "%d j\n", lj));
}
//
// 'pdfioContentSetLineWidth()' - Set the line width.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetLineWidth(
pdfio_stream_t *st, // I - Stream
float width) // I - Line width value
{
return (pdfioStreamPrintf(st, "%g w\n", width));
}
//
// 'pdfioContentSetMiterLimit()' - Set the miter limit.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetMiterLimit(
pdfio_stream_t *st, // I - Stream
float limit) // I - Miter limit value
{
return (pdfioStreamPrintf(st, "%g M\n", limit));
}
//
// 'pdfioContentSetStrokeColorDeviceCMYK()' - Set the device CMYK stroke color.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetStrokeColorDeviceCMYK(
pdfio_stream_t *st, // I - Stream
float c, // I - Cyan value (0.0 to 1.0)
float m, // I - Magenta value (0.0 to 1.0)
float y, // I - Yellow value (0.0 to 1.0)
float k) // I - Black value (0.0 to 1.0)
{
return (pdfioStreamPrintf(st, "%g %g %g %g K\n", c, m, y, k));
}
//
// 'pdfioContentSetStrokeColorDeviceGray()' - Set the device gray stroke color.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetStrokeColorDeviceGray(
pdfio_stream_t *st, // I - Stream
float g) // I - Gray value (0.0 to 1.0)
{
return (pdfioStreamPrintf(st, "%g G\n", g));
}
//
// 'pdfioContentSetStrokeColorDeviceRGB()' - Set the device RGB stroke color.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetStrokeColorDeviceRGB(
pdfio_stream_t *st, // I - Stream
float r, // I - Red value (0.0 to 1.0)
float g, // I - Green value (0.0 to 1.0)
float b) // I - Blue value (0.0 to 1.0)
{
return (pdfioStreamPrintf(st, "%g %g %g RG\n", r, g, b));
}
//
// 'pdfioContentSetStrokeColorGray()' - Set the calibrated gray stroke color.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetStrokeColorGray(
pdfio_stream_t *st, // I - Stream
float g) // I - Gray value (0.0 to 1.0)
{
return (pdfioStreamPrintf(st, "%g SC\n", g));
}
//
// 'pdfioContentSetStrokeColorRGB()' - Set the calibrated RGB stroke color.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetStrokeColorRGB(
pdfio_stream_t *st, // I - Stream
float r, // I - Red value (0.0 to 1.0)
float g, // I - Green value (0.0 to 1.0)
float b) // I - Blue value (0.0 to 1.0)
{
return (pdfioStreamPrintf(st, "%g %g %g SC\n", r, g, b));
}
//
// 'pdfioContentSetStrokeColorSpace()' - Set the stroke color space.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetStrokeColorSpace(
pdfio_stream_t *st, // I - Stream
const char *name) // I - Color space name
{
return (pdfioStreamPrintf(st, "/%s CS\n", name));
}
//
// 'pdfioContentSetTextCharacterSpacing()' - Set the spacing between characters.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetTextCharacterSpacing(
pdfio_stream_t *st, // I - Stream
float spacing) // I - Character spacing
{
return (pdfioStreamPrintf(st, "%g Tc\n", spacing));
}
//
// 'pdfioContentSetTextFont()' - Set the text font and size.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetTextFont(
pdfio_stream_t *st, // I - Stream
const char *name, // I - Font name
float size) // I - Font size
{
return (pdfioStreamPrintf(st, "/%s %g Tf\n", name, size));
}
//
// 'pdfioContentSetTextLeading()' - Set text leading (line height) value.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetTextLeading(
pdfio_stream_t *st, // I - Stream
float leading) // I - Leading (line height) value
{
return (pdfioStreamPrintf(st, "%g TL\n", leading));
}
//
// 'pdfioContentSetTextMatrix()' - Set the text transform matrix.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetTextMatrix(
pdfio_stream_t *st, // I - Stream
pdfio_matrix_t m) // I - Transform matrix
{
return (pdfioStreamPrintf(st, "%g %g %g %g %g %g Tm\n", m[0][0], m[0][1], m[1][0], m[1][1], m[2][0], m[2][1]));
}
//
// 'pdfioContentSetTextRenderingMode()' - Set the text rendering mode.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetTextRenderingMode(
pdfio_stream_t *st, // I - Stream
pdfio_textrendering_t mode) // I - Text rendering mode
{
return (pdfioStreamPrintf(st, "%d Tr\n", mode));
}
//
// 'pdfioContentSetTextRise()' - Set the text baseline offset.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetTextRise(
pdfio_stream_t *st, // I - Stream
float rise) // I - Y offset
{
return (pdfioStreamPrintf(st, "%g Ts\n", rise));
}
//
// 'pdfioContentSetTextWordSpacing()' - Set the inter-word spacing.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetTextWordSpacing(
pdfio_stream_t *st, // I - Stream
float spacing) // I - Spacing between words
{
return (pdfioStreamPrintf(st, "%g Tw\n", spacing));
}
//
// 'pdfioContentSetTextXScaling()' - Set the horizontal scaling value.
//
bool // O - `true` on success, `false` on failure
pdfioContentSetTextXScaling(
pdfio_stream_t *st, // I - Stream
float percent) // I - Horizontal scaling in percent
{
return (pdfioStreamPrintf(st, "%g Tz\n", percent));
}
//
// 'pdfioContentStroke()' - Stroke the current path.
//
bool // O - `true` on success, `false` on failure
pdfioContentStroke(pdfio_stream_t *st) // I - Stream
{
return (pdfioStreamPuts(st, "S\n"));
}
//
// 'pdfioContentTextMoveLine()' - Move to the next line and offset.
//
bool // O - `true` on success, `false` on failure
pdfioContentTextMoveLine(
pdfio_stream_t *st, // I - Stream
float tx, // I - X offset
float ty) // I - Y offset
{
return (pdfioStreamPrintf(st, "%g %g TD\n", tx, ty));
}
//
// 'pdfioContentTextMoveTo()' - Offset within the current line.
//
bool // O - `true` on success, `false` on failure
pdfioContentTextMoveTo(
pdfio_stream_t *st, // I - Stream
float tx, // I - X offset
float ty) // I - Y offset
{
return (pdfioStreamPrintf(st, "%g %g Td\n", tx, ty));
}
//
// 'pdfioContentTextNextLine()' - Move to the next line.
//
bool // O - `true` on success, `false` on failure
pdfioContentTextNextLine(
pdfio_stream_t *st) // I - Stream
{
return (pdfioStreamPuts(st, "T*\n"));
}
//
// 'pdfioContentTextShow()' - Show text.
//
bool // O - `true` on success, `false` on failure
pdfioContentTextShow(
pdfio_stream_t *st, // I - Stream
const char *s, // I - String to show
bool new_line) // I - Advance to the next line afterwards
{
write_string(st, s);
if (new_line)
return (pdfioStreamPuts(st, "\'\n"));
else
return (pdfioStreamPuts(st, "Tj\n"));
}
//
// 'pdfioContentTextShowJustified()' - Show justified text.
//
bool // O - `true` on success, `false` on failure
pdfioContentTextShowJustified(
pdfio_stream_t *st, // I - Stream
size_t num_fragments, // I - Number of text fragments
const float *offsets, // I - Text offsets before fragments
const char * const *fragments) // I - Text fragments
{
size_t i; // Looping var
// Write an array of offsets and string fragments...
if (!pdfioStreamPuts(st, "["))
return (false);
for (i = 0; i < num_fragments; i ++)
{
if (offsets[i] != 0.0f)
{
if (!pdfioStreamPrintf(st, "%g", offsets[i]))
return (false);
}
if (fragments[i])
{
if (!write_string(st, fragments[i]))
return (false);
}
}
return (pdfioStreamPuts(st, "]TJ\n"));
}
//
// 'pdfioPageDictAddICCColorSpace()' - Add an ICC color space to the page
// dictionary.
//
bool // O - `true` on success, `false` on failure
pdfioPageDictAddICCColorSpace(
pdfio_dict_t *dict, // I - Page dictionary
const char *name, // I - Color space name
pdfio_obj_t *obj) // I - ICC profile object
{
(void)dict;
(void)name;
(void)obj;
return (false);
}
//
// 'pdfioPageDictAddCalibratedColorSpace()' - Add a calibrated color space to
// the page dictionary.
//
bool // O - `true` on success, `false` on failure
pdfioPageDictAddCalibratedColorSpace(
pdfio_dict_t *dict, // I - Page dictionary
const char *name, // I - Color space name
size_t num_colors, // I - Number of color components
const float *white_point, // I - CIE XYZ white point
float gamma) // I - Gamma value
{
(void)dict;
(void)name;
(void)num_colors;
(void)white_point;
(void)gamma;
return (false);
}
//
// 'pdfioPageDictAddFont()' - Add a font object to the page dictionary.
//
bool // O - `true` on success, `false` on failure
pdfioPageDictAddFont(
pdfio_dict_t *dict, // I - Page dictionary
const char *name, // I - Font name
pdfio_obj_t *obj) // I - Font object
{
(void)dict;
(void)name;
(void)obj;
return (false);
}
//
// 'pdfioPageDictAddImage()' - Add an image object to the page dictionary.
//
bool // O - `true` on success, `false` on failure
pdfioPageDictAddImage(
pdfio_dict_t *dict, // I - Page dictionary
const char *name, // I - Image name
pdfio_obj_t *obj) // I - Image object
{
(void)dict;
(void)name;
(void)obj;
return (false);
}
//
// 'pdfioFileCreateFontObject()' - Add a font object to a PDF file.
//
pdfio_obj_t * // O - Object
pdfioFileCreateFontObject(
pdfio_file_t *pdf, // I - PDF file
const char *filename) // I - Filename
{
(void)pdf;
(void)filename;
return (NULL);
}
//
// 'pdfioFileCreateICCProfileObject()' - Add an ICC profile object to a PDF file.
//
pdfio_obj_t * // O - Object
pdfioFileCreateICCProfileObject(
pdfio_file_t *pdf, // I - PDF file
const char *filename) // I - Filename
{
(void)pdf;
(void)filename;
return (NULL);
}
//
// 'pdfioFileCreateImageObject()' - Add an image object to a PDF file.
//
pdfio_obj_t * // O - Object
pdfioFileCreateImageObject(
pdfio_file_t *pdf, // I - PDF file
const char *filename, // I - Filename
bool interpolate) // I - Interpolate image data?
{
(void)pdf;
(void)filename;
(void)interpolate;
return (NULL);
}
//
// 'write_string()' - Write a PDF string.
//
static bool // O - `true` on success, `false` otherwise
write_string(pdfio_stream_t *st, // I - Stream
const char *s) // I - String
{
const char *ptr; // Pointer into string
// Determine whether this is Unicode or just ASCII...
for (ptr = s; *ptr; ptr ++)
{
if (*ptr & 0x80)
break;
}
if (*ptr)
{
// Unicode string...
int ch; // Unicode character
if (!pdfioStreamPuts(st, "("))
return (false);
for (ptr = s; *ptr; ptr ++)
{
if ((*ptr & 0xe0) == 0xc0)
{
// Two-byte UTF-8
ch = ((ptr[0] & 0x1f) << 6) | (ptr[1] & 0x3f);
ptr ++;
}
else if ((*ptr & 0xf0) == 0xe0)
{
// Three-byte UTF-8
ch = ((ptr[0] & 0x0f) << 12) | ((ptr[1] & 0x3f) << 6) | (ptr[2] & 0x3f);
ptr += 2;
}
else if ((*ptr & 0xf8) == 0xf0)
{
// Four-byte UTF-8
ch = ((ptr[0] & 0x07) << 18) | ((ptr[1] & 0x3f) << 12) | ((ptr[2] & 0x3f) << 6) | (ptr[3] & 0x3f);
ptr += 3;
}
else
ch = *ptr & 255;
// Write a two-byte character...
if (!pdfioStreamPrintf(st, "%04X", ch))
return (false);
}
if (!pdfioStreamPuts(st, ")"))
return (false);
}
else
{
// ASCII string...
const char *start = s; // Start of fragment
int level = 0; // Paren level
if (!pdfioStreamPuts(st, "("))
return (false);
for (ptr = start; *ptr; ptr ++)
{
if (*ptr == '\\' || (*ptr == ')' && level == 0) || *ptr < ' ')
{
if (ptr > start)
{
if (!pdfioStreamWrite(st, start, (size_t)(ptr - start)))
return (false);
start = ptr + 1;
}
if (*ptr < ' ')
{
if (!pdfioStreamPrintf(st, "\\%03o", *ptr))
return (false);
}
else if (!pdfioStreamPrintf(st, "\\%c", *ptr))
return (false);
}
else if (*ptr == '(')
level ++;
else if (*ptr == ')')
level --;
}
if (ptr > start)
{
if (!pdfioStreamPrintf(st, "%s)", start))
return (false);
}
else if (!pdfioStreamPuts(st, ")"))
return (false);
}
return (true);
}

View File

@ -32,23 +32,16 @@ extern "C" {
typedef enum pdfio_linecap_e // Line capping modes
{
PDFIO_LINECAP_ = , //
PDFIO_LINECAP_ = , //
PDFIO_LINECAP_ = , //
PDFIO_LINECAP_ = , //
PDFIO_LINECAP_ = , //
PDFIO_LINECAP_ = , //
PDFIO_LINECAP_ = , //
PDFIO_LINECAP_BUTT, // Butt ends
PDFIO_LINECAP_ROUND, // Round ends
PDFIO_LINECAP_SQUARE // Square ends
} pdfio_linecap_t;
typedef enum pdfio_linejoin_e // Line joining modes
{
PDFIO_LINEJOIN_ = , //
PDFIO_LINEJOIN_ = , //
PDFIO_LINEJOIN_ = , //
PDFIO_LINEJOIN_ = , //
PDFIO_LINEJOIN_ = , //
PDFIO_LINEJOIN_ = , //
PDFIO_LINEJOIN_MITER, // Miter joint
PDFIO_LINEJOIN_ROUND, // Round joint
PDFIO_LINEJOIN_BEVEL // Bevel joint
} pdfio_linejoin_t;
typedef float pdfio_matrix_t[3][2]; // Transform matrix
@ -94,20 +87,16 @@ extern bool pdfioContentMatrixConcat(pdfio_stream_t *st, pdfio_matrix_t m) PDFI
extern bool pdfioContentMatrixRotate(pdfio_stream_t *st, float degrees) PDFIO_PUBLIC;
extern bool pdfioContentMatrixScale(pdfio_stream_t *st, float sx, float sy) PDFIO_PUBLIC;
extern bool pdfioContentMatrixTranslate(pdfio_stream_t *st, float tx, float ty) PDFIO_PUBLIC;
extern bool pdfioContentMoveTextLine(pdfio_stream_t *st, float tx, float ty) PDFIO_PUBLIC;
extern bool pdfioContentMoveTextTo(pdfio_stream_t *st, float x, float y, float leading) PDFIO_PUBLIC;
extern bool pdfioContentNextTextLine(pdfio_stream_t *st) PDFIO_PUBLIC;
extern bool pdfioContentPathClose(pdfio_stream_t *st) PDFIO_PUBLIC;
extern bool pdfioContentPathCurveTo(pdfio_stream_t *st, float x, float y) PDFIO_PUBLIC;
extern bool pdfioContentPathEnd(pdfio_stream_t *st) PDFIO_PUBLIC;
extern bool pdfioContentPathCurve(pdfio_stream_t *st, float x1, float y1, float x2, float y2, float x3, float y3) PDFIO_PUBLIC;
extern bool pdfioContentPathCurve13(pdfio_stream_t *st, float x1, float y1, float x3, float y3) PDFIO_PUBLIC;
extern bool pdfioContentPathCurve23(pdfio_stream_t *st, float x2, float y2, float x3, float y3) PDFIO_PUBLIC;
extern bool pdfioContentPathLineTo(pdfio_stream_t *st, float x, float y) PDFIO_PUBLIC;
extern bool pdfioContentPathMoveTo(pdfio_stream_t *st, float x, float y) PDFIO_PUBLIC;
extern bool pdfioContentPathNew(pdfio_stream_t *st) PDFIO_PUBLIC;
extern bool pdfioContentPathRect(pdfio_stream_t *st, pdfio_rect_t *rect) PDFIO_PUBLIC;
extern bool pdfioContentRestore(pdfio_stream_t *st) PDFIO_PUBLIC;
extern bool pdfioContentSave(pdfio_stream_t *st) PDFIO_PUBLIC;
extern bool pdfioContentSetCharacterSpacing(pdfio_stream_t *st, float spacing) PDFIO_PUBLIC;
extern bool pdfioContentSetDashPattern(pdfio_stream_t *st,) PDFIO_PUBLIC;
extern bool pdfioContentSetDashPattern(pdfio_stream_t *st, int phase, int on, int off) PDFIO_PUBLIC;
extern bool pdfioContentSetFillColorDeviceCMYK(pdfio_stream_t *st, float c, float m, float y, float k) PDFIO_PUBLIC;
extern bool pdfioContentSetFillColorDeviceGray(pdfio_stream_t *st, float g) PDFIO_PUBLIC;
extern bool pdfioContentSetFillColorDeviceRGB(pdfio_stream_t *st, float r, float g, float b) PDFIO_PUBLIC;
@ -115,32 +104,36 @@ extern bool pdfioContentSetFillColorGray(pdfio_stream_t *st, float g) PDFIO_PUB
extern bool pdfioContentSetFillColorRGB(pdfio_stream_t *st, float r, float g, float b) PDFIO_PUBLIC;
extern bool pdfioContentSetFillColorSpace(pdfio_stream_t *st, const char *name) PDFIO_PUBLIC;
extern bool pdfioContentSetFlatness(pdfio_stream_t *st, float f) PDFIO_PUBLIC;
extern bool pdfioContentSetFont(pdfio_stream_t *st, const char *name, float size) PDFIO_PUBLIC;
extern bool pdfioContentSetLineCap(pdfio_stream_t *st, pdfio_linecap_t lc) PDFIO_PUBLIC;
extern bool pdfioContentSetLineJoin(pdfio_stream_t *st, pdfio_linejoin_t lj) PDFIO_PUBLIC;
extern bool pdfioContentSetLineWidth(pdfio_stream_t *st, float w) PDFIO_PUBLIC;
extern bool pdfioContentSetMiterLimit(pdfio_stream_t *st, float l) PDFIO_PUBLIC;
extern bool pdfioContentSetLineWidth(pdfio_stream_t *st, float width) PDFIO_PUBLIC;
extern bool pdfioContentSetMiterLimit(pdfio_stream_t *st, float limit) PDFIO_PUBLIC;
extern bool pdfioContentSetStrokeColorDeviceCMYK(pdfio_stream_t *st, float c, float m, float y, float k) PDFIO_PUBLIC;
extern bool pdfioContentSetStrokeColorDeviceGray(pdfio_stream_t *st, float g) PDFIO_PUBLIC;
extern bool pdfioContentSetStrokeColorDeviceRGB(pdfio_stream_t *st, float r, float g, float b) PDFIO_PUBLIC;
extern bool pdfioContentSetStrokeColorGray(pdfio_stream_t *st, float g) PDFIO_PUBLIC;
extern bool pdfioContentSetStrokeColorRGB(pdfio_stream_t *st, float r, float g, float b) PDFIO_PUBLIC;
extern bool pdfioContentSetStrokeColorSpace(pdfio_stream_t *st, const char *name) PDFIO_PUBLIC;
extern bool pdfioContentSetTextCharacterSpacing(pdfio_stream_t *st, float spacing) PDFIO_PUBLIC;
extern bool pdfioContentSetTextFont(pdfio_stream_t *st, const char *name, float size) PDFIO_PUBLIC;
extern bool pdfioContentSetTextLeading(pdfio_stream_t *st, float leading) PDFIO_PUBLIC;
extern bool pdfioContentSetTextMatrix(pdfio_stream_t *st, pdfio_matrix_t m) PDFIO_PUBLIC;
extern bool pdfioContentSetTextRenderingMode(pdfio_stream_t *st, pdfio_textrendering_t mode) PDFIO_PUBLIC;
extern bool pdfioContentSetTextRise(pdfio_stream_t *st, float rise) PDFIO_PUBLIC;
extern bool pdfioContentSetTextWordSpacing(pdfio_stream_t *st, float spacing) PDFIO_PUBLIC;
extern bool pdfioContentSetTextXScaling(pdfio_stream_t *st, float percent) PDFIO_PUBLIC;
extern bool pdfioContentShowJustifiedText(pdfio_stream_t *st, size_t num_fragments, const float **offsets, const char * const *fragments) PDFIO_PUBLIC;
extern bool pdfioContentShowText(pdfio_stream_t *st, const char *s, bool new_line) PDFIO_PUBLIC;
extern bool pdfioContentStroke(pdfio_stream_t *st) PDFIO_PUBLIC;
extern bool pdfioContentTextMoveLine(pdfio_stream_t *st, float tx, float ty) PDFIO_PUBLIC;
extern bool pdfioContentTextMoveTo(pdfio_stream_t *st, float tx, float ty) PDFIO_PUBLIC;
extern bool pdfioContentTextNextLine(pdfio_stream_t *st) PDFIO_PUBLIC;
extern bool pdfioContentTextShow(pdfio_stream_t *st, const char *s, bool new_line) PDFIO_PUBLIC;
extern bool pdfioContentTextShowJustified(pdfio_stream_t *st, size_t num_fragments, const float *offsets, const char * const *fragments) PDFIO_PUBLIC;
// Page dictionary helpers...
extern bool pdfioPageDictAddICCColorSpace(pdfio_dict_t *dict, const char *name, pdfio_obj_t *obj);
extern bool pdfioPageDictAddCalibratedColorSpace(pdfio_dict_t *dict, const char *name, size_t num_colors, const float *white_point, float gamma);
extern bool pdfioPageDictAddFont(pdfio_dict_t *dict, const char *name, pdfio_obj_t *obj);
extern bool pdfioPageDictAddImage(pdfio_dict_t *dict, const char *name, pdfio_obj_t *obj);
extern bool pdfioPageDictAddICCColorSpace(pdfio_dict_t *dict, const char *name, pdfio_obj_t *obj) PDFIO_PUBLIC;
extern bool pdfioPageDictAddCalibratedColorSpace(pdfio_dict_t *dict, const char *name, size_t num_colors, const float *white_point, float gamma) PDFIO_PUBLIC;
extern bool pdfioPageDictAddFont(pdfio_dict_t *dict, const char *name, pdfio_obj_t *obj) PDFIO_PUBLIC;
extern bool pdfioPageDictAddImage(pdfio_dict_t *dict, const char *name, pdfio_obj_t *obj) PDFIO_PUBLIC;
// Resource helpers...
extern pdfio_obj_t *pdfioFileCreateFontObject(pdfio_file_t *pdf, const char *filename) PDFIO_PUBLIC;

View File

@ -7,6 +7,8 @@
objects = {
/* Begin PBXBuildFile section */
271EA705265B2B1000ACDD39 /* pdfio-content.c in Sources */ = {isa = PBXBuildFile; fileRef = 271EA703265B2B1000ACDD39 /* pdfio-content.c */; };
271EA706265B2B1000ACDD39 /* pdfio-content.h in Headers */ = {isa = PBXBuildFile; fileRef = 271EA704265B2B1000ACDD39 /* pdfio-content.h */; };
273440C3263D727800FBFD63 /* pdfio-private.h in Headers */ = {isa = PBXBuildFile; fileRef = 273440B8263D727800FBFD63 /* pdfio-private.h */; };
273440C4263D727800FBFD63 /* pdfio-string.c in Sources */ = {isa = PBXBuildFile; fileRef = 273440B9263D727800FBFD63 /* pdfio-string.c */; };
273440C5263D727800FBFD63 /* pdfio-array.c in Sources */ = {isa = PBXBuildFile; fileRef = 273440BA263D727800FBFD63 /* pdfio-array.c */; };
@ -46,6 +48,8 @@
/* End PBXCopyFilesBuildPhase section */
/* Begin PBXFileReference section */
271EA703265B2B1000ACDD39 /* pdfio-content.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = "pdfio-content.c"; sourceTree = "<group>"; };
271EA704265B2B1000ACDD39 /* pdfio-content.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "pdfio-content.h"; sourceTree = "<group>"; };
273440B0263D6FE200FBFD63 /* libpdfio.a */ = {isa = PBXFileReference; explicitFileType = archive.ar; includeInIndex = 0; path = libpdfio.a; sourceTree = BUILT_PRODUCTS_DIR; };
273440B8263D727800FBFD63 /* pdfio-private.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "pdfio-private.h"; sourceTree = "<group>"; };
273440B9263D727800FBFD63 /* pdfio-string.c */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.c; path = "pdfio-string.c"; sourceTree = "<group>"; };
@ -99,6 +103,8 @@
273440DE263D732000FBFD63 /* pdfio.pc.in */,
273440BA263D727800FBFD63 /* pdfio-array.c */,
273440BB263D727800FBFD63 /* pdfio-common.c */,
271EA704265B2B1000ACDD39 /* pdfio-content.h */,
271EA703265B2B1000ACDD39 /* pdfio-content.c */,
273440BE263D727800FBFD63 /* pdfio-dict.c */,
273440BD263D727800FBFD63 /* pdfio-file.c */,
273440BC263D727800FBFD63 /* pdfio-object.c */,
@ -154,6 +160,7 @@
files = (
273440CC263D727800FBFD63 /* pdfio.h in Headers */,
273440C3263D727800FBFD63 /* pdfio-private.h in Headers */,
271EA706265B2B1000ACDD39 /* pdfio-content.h in Headers */,
);
runOnlyForDeploymentPostprocessing = 0;
};
@ -244,6 +251,7 @@
273440E4263DD7EA00FBFD63 /* pdfio-token.c in Sources */,
273440C7263D727800FBFD63 /* pdfio-object.c in Sources */,
273440C4263D727800FBFD63 /* pdfio-string.c in Sources */,
271EA705265B2B1000ACDD39 /* pdfio-content.c in Sources */,
273440C6263D727800FBFD63 /* pdfio-common.c in Sources */,
);
runOnlyForDeploymentPostprocessing = 0;