mirror of
https://github.com/michaelrsweet/pdfio.git
synced 2024-06-26 17:09:47 +02:00
Implement calibrated color support, including constants for a few standard
color spaces and a new color patch test page. The grayscale test image from CUPS wasn't actually grayscale.
This commit is contained in:
Michael R Sweet
parent
627b04d9f0
commit
c4e0421f62
289
pdfio-content.c
289
pdfio-content.c
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@ -16,6 +16,21 @@
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#include <math.h>
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//
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// Global constants...
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//
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const double pdfioAdobeRGBGamma = 2.2;
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const double pdfioAdobeRGBMatrix[3][3] = { { 0.57667, 0.18556, 0.18823 }, { 0.29734, 0.62736, 0.07529 }, { 0.02703, 0.07069, 0.99134 } };
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const double pdfioAdobeRGBWhitePoint[3] = { 0.9505, 1.0, 1.0890 };
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const double pdfioDisplayP3Gamma = 2.2;
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const double pdfioDisplayP3Matrix[3][3] = { { 0.48657, 0.26567, 0.19822 }, {
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0.22897, 0.69174, 0.07929 }, { 0.00000, 0.04511, 1.04394 } };
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const double pdfioDisplayP3WhitePoint[3] = { 0.9505, 1.0, 1.0890 };
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const double pdfioSRGBGamma = 2.2;
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const double pdfioSRGBMatrix[3][3] = { { 0.4124, 0.3576, 0.1805 }, { 0.2126, 0.7152, 0.0722 }, { 0.0193, 0.1192, 0.9505 } };
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const double pdfioSRGBWhitePoint[3] = { 0.9505, 1.0, 1.0890 };
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//
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// Local types...
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//
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@ -29,6 +44,7 @@ typedef pdfio_obj_t *(*_pdfio_image_func_t)(pdfio_dict_t *dict, int fd);
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static pdfio_obj_t *copy_jpeg(pdfio_dict_t *dict, int fd);
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static pdfio_obj_t *copy_png(pdfio_dict_t *dict, int fd);
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static pdfio_array_t *create_calcolor(pdfio_file_t *pdf, size_t num_colors, double gamma, const double matrix[3][3], const double white_point[3]);
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static bool write_string(pdfio_stream_t *st, const char *s);
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@ -68,12 +84,12 @@ bool // O - `true` on success, `false` on failure
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pdfioContentDrawImage(
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pdfio_stream_t *st, // I - Stream
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const char *name, // I - Image name
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double x, // I - X offset of image
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double y, // I - Y offset of image
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double w, // I - Width of image
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double h) // I - Height of image
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double x, // I - X offset of image
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double y, // I - Y offset of image
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double width, // I - Width of image
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double height) // I - Height of image
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{
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return (pdfioStreamPrintf(st, "q %g 0 0 %g %g %g cm/%s Do Q\n", w, h, x, y, name));
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return (pdfioStreamPrintf(st, "q %g 0 0 %g %g %g cm/%s Do Q\n", width, height, x, y, name));
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}
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@ -135,7 +151,7 @@ pdfioContentMatrixConcat(
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bool // O - `true` on success, `false` on failure
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pdfioContentMatrixRotate(
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pdfio_stream_t *st, // I - Stream
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double degrees) // I - Rotation angle in degrees counter-clockwise
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double degrees) // I - Rotation angle in degrees counter-clockwise
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{
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double dcos = cos(degrees / M_PI); // Cosine
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double dsin = sin(degrees / M_PI); // Sine
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@ -151,8 +167,8 @@ pdfioContentMatrixRotate(
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bool // O - `true` on success, `false` on failure
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pdfioContentMatrixScale(
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pdfio_stream_t *st, // I - Stream
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double sx, // I - X scale
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double sy) // I - Y scale
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double sx, // I - X scale
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double sy) // I - Y scale
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{
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return (pdfioStreamPrintf(st, "%g 0 0 %g 0 0 cm\n", sx, sy));
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}
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@ -165,8 +181,8 @@ pdfioContentMatrixScale(
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bool // O - `true` on success, `false` on failure
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pdfioContentMatrixTranslate(
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pdfio_stream_t *st, // I - Stream
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double tx, // I - X offset
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double ty) // I - Y offset
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double tx, // I - X offset
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double ty) // I - Y offset
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{
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return (pdfioStreamPrintf(st, "1 0 0 1 %g %g cm\n", tx, ty));
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}
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@ -191,12 +207,12 @@ pdfioContentPathClose(
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bool // O - `true` on success, `false` on failure
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pdfioContentPathCurve(
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pdfio_stream_t *st, // I - Stream
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double x1, // I - X position 1
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double y1, // I - Y position 1
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double x2, // I - X position 2
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double y2, // I - Y position 2
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double x3, // I - X position 3
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double y3) // I - Y position 3
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double x1, // I - X position 1
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double y1, // I - Y position 1
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double x2, // I - X position 2
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double y2, // I - Y position 2
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double x3, // I - X position 3
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double y3) // I - Y position 3
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{
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return (pdfioStreamPrintf(st, "%g %g %g %g %g %g c\n", x1, y1, x2, y2, x3, y3));
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}
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@ -209,10 +225,10 @@ pdfioContentPathCurve(
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bool // O - `true` on success, `false` on failure
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pdfioContentPathCurve13(
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pdfio_stream_t *st, // I - Stream
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double x1, // I - X position 1
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double y1, // I - Y position 1
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double x3, // I - X position 3
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double y3) // I - Y position 3
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double x1, // I - X position 1
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double y1, // I - Y position 1
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double x3, // I - X position 3
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double y3) // I - Y position 3
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{
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return (pdfioStreamPrintf(st, "%g %g %g %g v\n", x1, y1, x3, y3));
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}
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@ -225,10 +241,10 @@ pdfioContentPathCurve13(
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bool // O - `true` on success, `false` on failure
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pdfioContentPathCurve23(
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pdfio_stream_t *st, // I - Stream
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double x2, // I - X position 2
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double y2, // I - Y position 2
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double x3, // I - X position 3
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double y3) // I - Y position 3
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double x2, // I - X position 2
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double y2, // I - Y position 2
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double x3, // I - X position 3
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double y3) // I - Y position 3
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{
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return (pdfioStreamPrintf(st, "%g %g %g %g y\n", x2, y2, x3, y3));
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}
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@ -241,8 +257,8 @@ pdfioContentPathCurve23(
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bool // O - `true` on success, `false` on failure
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pdfioContentPathLineTo(
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pdfio_stream_t *st, // I - Stream
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double x, // I - X position
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double y) // I - Y position
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double x, // I - X position
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double y) // I - Y position
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{
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return (pdfioStreamPrintf(st, "%g %g l\n", x, y));
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}
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@ -255,8 +271,8 @@ pdfioContentPathLineTo(
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bool // O - `true` on success, `false` on failure
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pdfioContentPathMoveTo(
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pdfio_stream_t *st, // I - Stream
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double x, // I - X position
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double y) // I - Y position
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double x, // I - X position
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double y) // I - Y position
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{
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return (pdfioStreamPrintf(st, "%g %g m\n", x, y));
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}
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@ -269,9 +285,12 @@ pdfioContentPathMoveTo(
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bool // O - `true` on success, `false` on failure
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pdfioContentPathRect(
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pdfio_stream_t *st, // I - Stream
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pdfio_rect_t *rect) // I - Rectangle
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double x, // I - X offset
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double y, // I - Y offset
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double width, // I - Width
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double height) // I - Height
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{
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return (pdfioStreamPrintf(st, "%g %g %g %g re\n", rect->x1, rect->y1, rect->x2 - rect->x1, rect->y2 - rect->y1));
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return (pdfioStreamPrintf(st, "%g %g %g %g re\n", x, y, width, height));
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}
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@ -320,10 +339,10 @@ pdfioContentSetDashPattern(
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bool // O - `true` on success, `false` on failure
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pdfioContentSetFillColorDeviceCMYK(
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pdfio_stream_t *st, // I - Stream
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double c, // I - Cyan value (0.0 to 1.0)
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double m, // I - Magenta value (0.0 to 1.0)
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double y, // I - Yellow value (0.0 to 1.0)
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double k) // I - Black value (0.0 to 1.0)
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double c, // I - Cyan value (0.0 to 1.0)
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double m, // I - Magenta value (0.0 to 1.0)
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double y, // I - Yellow value (0.0 to 1.0)
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double k) // I - Black value (0.0 to 1.0)
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{
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return (pdfioStreamPrintf(st, "%g %g %g %g k\n", c, m, y, k));
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}
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@ -336,7 +355,7 @@ pdfioContentSetFillColorDeviceCMYK(
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bool // O - `true` on success, `false` on failure
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pdfioContentSetFillColorDeviceGray(
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pdfio_stream_t *st, // I - Stream
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double g) // I - Gray value (0.0 to 1.0)
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double g) // I - Gray value (0.0 to 1.0)
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{
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return (pdfioStreamPrintf(st, "%g g\n", g));
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}
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@ -349,9 +368,9 @@ pdfioContentSetFillColorDeviceGray(
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bool // O - `true` on success, `false` on failure
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pdfioContentSetFillColorDeviceRGB(
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pdfio_stream_t *st, // I - Stream
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double r, // I - Red value (0.0 to 1.0)
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double g, // I - Green value (0.0 to 1.0)
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double b) // I - Blue value (0.0 to 1.0)
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double r, // I - Red value (0.0 to 1.0)
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double g, // I - Green value (0.0 to 1.0)
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double b) // I - Blue value (0.0 to 1.0)
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{
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return (pdfioStreamPrintf(st, "%g %g %g rg\n", r, g, b));
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}
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@ -364,7 +383,7 @@ pdfioContentSetFillColorDeviceRGB(
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bool // O - `true` on success, `false` on failure
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pdfioContentSetFillColorGray(
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pdfio_stream_t *st, // I - Stream
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double g) // I - Gray value (0.0 to 1.0)
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double g) // I - Gray value (0.0 to 1.0)
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{
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return (pdfioStreamPrintf(st, "%g sc\n", g));
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}
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@ -377,9 +396,9 @@ pdfioContentSetFillColorGray(
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bool // O - `true` on success, `false` on failure
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pdfioContentSetFillColorRGB(
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pdfio_stream_t *st, // I - Stream
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double r, // I - Red value (0.0 to 1.0)
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double g, // I - Green value (0.0 to 1.0)
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double b) // I - Blue value (0.0 to 1.0)
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double r, // I - Red value (0.0 to 1.0)
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double g, // I - Green value (0.0 to 1.0)
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double b) // I - Blue value (0.0 to 1.0)
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{
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return (pdfioStreamPrintf(st, "%g %g %g sc\n", r, g, b));
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}
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@ -405,7 +424,7 @@ pdfioContentSetFillColorSpace(
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bool // O - `true` on success, `false` on failure
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pdfioContentSetFlatness(
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pdfio_stream_t *st, // I - Stream
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double flatness) // I - Flatness value (0.0 to 100.0)
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double flatness) // I - Flatness value (0.0 to 100.0)
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{
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return (pdfioStreamPrintf(st, "%g i\n", flatness));
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}
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@ -444,7 +463,7 @@ pdfioContentSetLineJoin(
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bool // O - `true` on success, `false` on failure
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pdfioContentSetLineWidth(
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pdfio_stream_t *st, // I - Stream
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double width) // I - Line width value
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double width) // I - Line width value
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{
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return (pdfioStreamPrintf(st, "%g w\n", width));
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}
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@ -457,7 +476,7 @@ pdfioContentSetLineWidth(
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bool // O - `true` on success, `false` on failure
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pdfioContentSetMiterLimit(
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pdfio_stream_t *st, // I - Stream
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double limit) // I - Miter limit value
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double limit) // I - Miter limit value
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{
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return (pdfioStreamPrintf(st, "%g M\n", limit));
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}
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@ -470,10 +489,10 @@ pdfioContentSetMiterLimit(
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bool // O - `true` on success, `false` on failure
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pdfioContentSetStrokeColorDeviceCMYK(
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pdfio_stream_t *st, // I - Stream
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double c, // I - Cyan value (0.0 to 1.0)
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double m, // I - Magenta value (0.0 to 1.0)
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double y, // I - Yellow value (0.0 to 1.0)
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double k) // I - Black value (0.0 to 1.0)
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double c, // I - Cyan value (0.0 to 1.0)
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double m, // I - Magenta value (0.0 to 1.0)
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double y, // I - Yellow value (0.0 to 1.0)
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double k) // I - Black value (0.0 to 1.0)
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{
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return (pdfioStreamPrintf(st, "%g %g %g %g K\n", c, m, y, k));
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}
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@ -486,7 +505,7 @@ pdfioContentSetStrokeColorDeviceCMYK(
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bool // O - `true` on success, `false` on failure
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pdfioContentSetStrokeColorDeviceGray(
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pdfio_stream_t *st, // I - Stream
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double g) // I - Gray value (0.0 to 1.0)
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double g) // I - Gray value (0.0 to 1.0)
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{
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return (pdfioStreamPrintf(st, "%g G\n", g));
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}
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@ -499,9 +518,9 @@ pdfioContentSetStrokeColorDeviceGray(
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bool // O - `true` on success, `false` on failure
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pdfioContentSetStrokeColorDeviceRGB(
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pdfio_stream_t *st, // I - Stream
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double r, // I - Red value (0.0 to 1.0)
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double g, // I - Green value (0.0 to 1.0)
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double b) // I - Blue value (0.0 to 1.0)
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double r, // I - Red value (0.0 to 1.0)
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double g, // I - Green value (0.0 to 1.0)
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double b) // I - Blue value (0.0 to 1.0)
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{
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return (pdfioStreamPrintf(st, "%g %g %g RG\n", r, g, b));
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}
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@ -514,7 +533,7 @@ pdfioContentSetStrokeColorDeviceRGB(
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bool // O - `true` on success, `false` on failure
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pdfioContentSetStrokeColorGray(
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pdfio_stream_t *st, // I - Stream
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double g) // I - Gray value (0.0 to 1.0)
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double g) // I - Gray value (0.0 to 1.0)
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{
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return (pdfioStreamPrintf(st, "%g SC\n", g));
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}
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@ -527,9 +546,9 @@ pdfioContentSetStrokeColorGray(
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bool // O - `true` on success, `false` on failure
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pdfioContentSetStrokeColorRGB(
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pdfio_stream_t *st, // I - Stream
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double r, // I - Red value (0.0 to 1.0)
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double g, // I - Green value (0.0 to 1.0)
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double b) // I - Blue value (0.0 to 1.0)
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double r, // I - Red value (0.0 to 1.0)
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double g, // I - Green value (0.0 to 1.0)
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double b) // I - Blue value (0.0 to 1.0)
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{
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return (pdfioStreamPrintf(st, "%g %g %g SC\n", r, g, b));
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}
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@ -555,7 +574,7 @@ pdfioContentSetStrokeColorSpace(
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bool // O - `true` on success, `false` on failure
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pdfioContentSetTextCharacterSpacing(
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pdfio_stream_t *st, // I - Stream
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double spacing) // I - Character spacing
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double spacing) // I - Character spacing
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{
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return (pdfioStreamPrintf(st, "%g Tc\n", spacing));
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}
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@ -569,7 +588,7 @@ bool // O - `true` on success, `false` on failure
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pdfioContentSetTextFont(
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pdfio_stream_t *st, // I - Stream
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const char *name, // I - Font name
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double size) // I - Font size
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double size) // I - Font size
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{
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return (pdfioStreamPrintf(st, "/%s %g Tf\n", name, size));
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}
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@ -582,7 +601,7 @@ pdfioContentSetTextFont(
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bool // O - `true` on success, `false` on failure
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pdfioContentSetTextLeading(
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pdfio_stream_t *st, // I - Stream
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double leading) // I - Leading (line height) value
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double leading) // I - Leading (line height) value
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{
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return (pdfioStreamPrintf(st, "%g TL\n", leading));
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}
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@ -621,7 +640,7 @@ pdfioContentSetTextRenderingMode(
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bool // O - `true` on success, `false` on failure
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pdfioContentSetTextRise(
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pdfio_stream_t *st, // I - Stream
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double rise) // I - Y offset
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double rise) // I - Y offset
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{
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return (pdfioStreamPrintf(st, "%g Ts\n", rise));
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}
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@ -634,7 +653,7 @@ pdfioContentSetTextRise(
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bool // O - `true` on success, `false` on failure
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pdfioContentSetTextWordSpacing(
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pdfio_stream_t *st, // I - Stream
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double spacing) // I - Spacing between words
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double spacing) // I - Spacing between words
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{
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return (pdfioStreamPrintf(st, "%g Tw\n", spacing));
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}
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@ -647,7 +666,7 @@ pdfioContentSetTextWordSpacing(
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bool // O - `true` on success, `false` on failure
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pdfioContentSetTextXScaling(
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pdfio_stream_t *st, // I - Stream
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double percent) // I - Horizontal scaling in percent
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double percent) // I - Horizontal scaling in percent
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{
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return (pdfioStreamPrintf(st, "%g Tz\n", percent));
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}
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@ -671,8 +690,8 @@ pdfioContentStroke(pdfio_stream_t *st) // I - Stream
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bool // O - `true` on success, `false` on failure
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pdfioContentTextMoveLine(
|
||||
pdfio_stream_t *st, // I - Stream
|
||||
double tx, // I - X offset
|
||||
double ty) // I - Y offset
|
||||
double tx, // I - X offset
|
||||
double ty) // I - Y offset
|
||||
{
|
||||
return (pdfioStreamPrintf(st, "%g %g TD\n", tx, ty));
|
||||
}
|
||||
|
|
@ -685,8 +704,8 @@ pdfioContentTextMoveLine(
|
|||
bool // O - `true` on success, `false` on failure
|
||||
pdfioContentTextMoveTo(
|
||||
pdfio_stream_t *st, // I - Stream
|
||||
double tx, // I - X offset
|
||||
double ty) // I - Y offset
|
||||
double tx, // I - X offset
|
||||
double ty) // I - Y offset
|
||||
{
|
||||
return (pdfioStreamPrintf(st, "%g %g Td\n", tx, ty));
|
||||
}
|
||||
|
|
@ -731,7 +750,7 @@ 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 double *offsets, // I - Text offsets before fragments
|
||||
const double *offsets, // I - Text offsets before fragments
|
||||
const char * const *fragments) // I - Text fragments
|
||||
{
|
||||
size_t i; // Looping var
|
||||
|
|
@ -789,16 +808,39 @@ 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 double *white_point, // I - CIE XYZ white point
|
||||
double gamma) // I - Gamma value
|
||||
double gamma, // I - Gamma value
|
||||
const double matrix[3][3], // I - Color transform matrix
|
||||
const double white_point[3]) // I - CIE XYZ white point
|
||||
{
|
||||
(void)dict;
|
||||
(void)name;
|
||||
(void)num_colors;
|
||||
(void)white_point;
|
||||
(void)gamma;
|
||||
pdfio_dict_t *resources; // Resource dictionary
|
||||
pdfio_dict_t *colorspace; // ColorSpace dictionary
|
||||
|
||||
return (false);
|
||||
|
||||
// Range check input...
|
||||
if (!dict || !name || !num_colors || gamma <= 0.0)
|
||||
return (false);
|
||||
|
||||
// Get the ColorSpace dictionary...
|
||||
if ((resources = pdfioDictGetDict(dict, "Resources")) == NULL)
|
||||
{
|
||||
if ((resources = pdfioDictCreate(dict->pdf)) == NULL)
|
||||
return (false);
|
||||
|
||||
if (!pdfioDictSetDict(dict, "Resources", resources))
|
||||
return (false);
|
||||
}
|
||||
|
||||
if ((colorspace = pdfioDictGetDict(resources, "ColorSpace")) == NULL)
|
||||
{
|
||||
if ((colorspace = pdfioDictCreate(dict->pdf)) == NULL)
|
||||
return (false);
|
||||
|
||||
if (!pdfioDictSetDict(resources, "ColorSpace", colorspace))
|
||||
return (false);
|
||||
}
|
||||
|
||||
// Now set the color space reference and return...
|
||||
return (pdfioDictSetArray(colorspace, name, create_calcolor(dict->pdf, num_colors, gamma, matrix, white_point)));
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -838,7 +880,7 @@ pdfioPageDictAddImage(
|
|||
if (!dict || !name || !obj)
|
||||
return (false);
|
||||
|
||||
// Get the images dictionary...
|
||||
// Get the Resources dictionary...
|
||||
if ((resources = pdfioDictGetDict(dict, "Resources")) == NULL)
|
||||
{
|
||||
if ((resources = pdfioDictCreate(dict->pdf)) == NULL)
|
||||
|
|
@ -848,6 +890,7 @@ pdfioPageDictAddImage(
|
|||
return (false);
|
||||
}
|
||||
|
||||
// Get the XObject dictionary...
|
||||
if ((xobject = pdfioDictGetDict(resources, "XObject")) == NULL)
|
||||
{
|
||||
if ((xobject = pdfioDictCreate(dict->pdf)) == NULL)
|
||||
|
|
@ -857,7 +900,7 @@ pdfioPageDictAddImage(
|
|||
return (false);
|
||||
}
|
||||
|
||||
// Now set the image reference in the images resource dictionary and return...
|
||||
// Now set the image reference in the XObject resource dictionary and return...
|
||||
return (pdfioDictSetObject(xobject, name, obj));
|
||||
}
|
||||
|
||||
|
|
@ -1064,6 +1107,12 @@ copy_jpeg(pdfio_dict_t *dict, // I - Dictionary
|
|||
if ((*bufptr >= 0xc0 && *bufptr <= 0xc3) || (*bufptr >= 0xc5 && *bufptr <= 0xc7) || (*bufptr >= 0xc9 && *bufptr <= 0xcb) || (*bufptr >= 0xcd && *bufptr <= 0xcf))
|
||||
{
|
||||
// SOFn marker, look for dimensions...
|
||||
if (bufptr[3] != 8)
|
||||
{
|
||||
_pdfioFileError(dict->pdf, "Unable to load %d-bit JPEG image.", bufptr[3]);
|
||||
return (NULL);
|
||||
}
|
||||
|
||||
width = (unsigned)((bufptr[6] << 8) | bufptr[7]);
|
||||
height = (unsigned)((bufptr[4] << 8) | bufptr[5]);
|
||||
num_colors = bufptr[8];
|
||||
|
|
@ -1100,7 +1149,7 @@ copy_jpeg(pdfio_dict_t *dict, // I - Dictionary
|
|||
pdfioDictSetNumber(dict, "Height", height);
|
||||
pdfioDictSetNumber(dict, "BitsPerComponent", 8);
|
||||
// TODO: Add proper JPEG CalRGB/Gray color spaces
|
||||
pdfioDictSetName(dict, "ColorSpace", num_colors == 3 ? "DeviceRGB" : "DeviceGray");
|
||||
pdfioDictSetArray(dict, "ColorSpace", create_calcolor(dict->pdf, num_colors, pdfioSRGBGamma, pdfioSRGBMatrix, pdfioSRGBWhitePoint));
|
||||
pdfioDictSetName(dict, "Filter", "DCTDecode");
|
||||
|
||||
obj = pdfioFileCreateObject(dict->pdf, dict);
|
||||
|
|
@ -1137,6 +1186,88 @@ copy_png(pdfio_dict_t *dict, // I - Dictionary
|
|||
}
|
||||
|
||||
|
||||
//
|
||||
// 'create_calcolor()' - Create a CalGray or CalRGB color array.
|
||||
//
|
||||
|
||||
static pdfio_array_t * // O - Array
|
||||
create_calcolor(
|
||||
pdfio_file_t *pdf, // I - PDF file
|
||||
size_t num_colors, // I - Number of colors (1 or 3)
|
||||
double gamma, // I - Gamma value
|
||||
const double matrix[3][3], // I - XYZ transform
|
||||
const double white_point[3]) // I - White point
|
||||
{
|
||||
size_t i; // Looping var
|
||||
pdfio_array_t *calcolor; // Array to hold calibrated color space
|
||||
pdfio_dict_t *dict; // Dictionary to hold color values
|
||||
pdfio_array_t *value; // Value for white point, matrix, and gamma
|
||||
|
||||
|
||||
// Create the array with two values - a name and a dictionary...
|
||||
if ((calcolor = pdfioArrayCreate(pdf)) == NULL)
|
||||
return (NULL);
|
||||
|
||||
if (num_colors == 1)
|
||||
pdfioArrayAppendName(calcolor, "CalGray");
|
||||
else
|
||||
pdfioArrayAppendName(calcolor, "CalRGB");
|
||||
|
||||
if ((dict = pdfioDictCreate(pdf)) == NULL)
|
||||
return (NULL);
|
||||
|
||||
pdfioArrayAppendDict(calcolor, dict);
|
||||
|
||||
// Then add the values...
|
||||
if (num_colors == 1)
|
||||
{
|
||||
pdfioDictSetNumber(dict, "Gamma", gamma);
|
||||
}
|
||||
else
|
||||
{
|
||||
if ((value = pdfioArrayCreate(pdf)) == NULL)
|
||||
return (NULL);
|
||||
|
||||
for (i = 0; i < num_colors; i ++)
|
||||
pdfioArrayAppendNumber(value, gamma);
|
||||
|
||||
pdfioDictSetArray(dict, "Gamma", value);
|
||||
}
|
||||
|
||||
if (white_point)
|
||||
{
|
||||
if ((value = pdfioArrayCreate(pdf)) == NULL)
|
||||
return (NULL);
|
||||
|
||||
pdfioArrayAppendNumber(value, white_point[0]);
|
||||
pdfioArrayAppendNumber(value, white_point[1]);
|
||||
pdfioArrayAppendNumber(value, white_point[2]);
|
||||
|
||||
pdfioDictSetArray(dict, "WhitePoint", value);
|
||||
}
|
||||
|
||||
if (num_colors > 1 && matrix)
|
||||
{
|
||||
if ((value = pdfioArrayCreate(pdf)) == NULL)
|
||||
return (NULL);
|
||||
|
||||
pdfioArrayAppendNumber(value, matrix[0][0]);
|
||||
pdfioArrayAppendNumber(value, matrix[1][0]);
|
||||
pdfioArrayAppendNumber(value, matrix[2][0]);
|
||||
pdfioArrayAppendNumber(value, matrix[0][1]);
|
||||
pdfioArrayAppendNumber(value, matrix[1][1]);
|
||||
pdfioArrayAppendNumber(value, matrix[2][1]);
|
||||
pdfioArrayAppendNumber(value, matrix[0][2]);
|
||||
pdfioArrayAppendNumber(value, matrix[1][2]);
|
||||
pdfioArrayAppendNumber(value, matrix[2][2]);
|
||||
|
||||
pdfioDictSetArray(dict, "Matrix", value);
|
||||
}
|
||||
|
||||
return (calcolor);
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// 'write_string()' - Write a PDF string.
|
||||
//
|
||||
|
|
|
|||
|
|
@ -59,16 +59,23 @@ typedef enum pdfio_textrendering_e // Text rendering modes
|
|||
PDFIO_TEXTRENDERING_TEXT_PATH // Add text to path (invisible)
|
||||
} pdfio_textrendering_t;
|
||||
|
||||
extern const double pdfioAdobeRGBGamma;
|
||||
extern const double pdfioAdobeRGBGamma PDFIO_PUBLIC;
|
||||
// AdobeRGB gamma
|
||||
extern const double pdfioAdobeRGBWhitePoint[];
|
||||
extern const double pdfioAdobeRGBMatrix[3][3] PDFIO_PUBLIC;
|
||||
// AdobeRGB matrix
|
||||
extern const double pdfioAdobeRGBWhitePoint[3] PDFIO_PUBLIC;
|
||||
// AdobeRGB white point
|
||||
extern const double pdfioDisplayP3Gamma;
|
||||
extern const double pdfioDisplayP3Gamma PDFIO_PUBLIC;
|
||||
// Display P3 gamma
|
||||
extern const double pdfioDisplayP3WhitePoint[];
|
||||
extern const double pdfioDisplayP3Matrix[3][3] PDFIO_PUBLIC;
|
||||
// Display P3 matrix
|
||||
extern const double pdfioDisplayP3WhitePoint[3] PDFIO_PUBLIC;
|
||||
// Display P3 white point
|
||||
extern const double pdfioSRGBGamma; // sRGB gamma
|
||||
extern const double pdfioSRGBWhitePoint[];
|
||||
extern const double pdfioSRGBGamma PDFIO_PUBLIC;
|
||||
// sRGB gamma
|
||||
extern const double pdfioSRGBMatrix[3][3] PDFIO_PUBLIC;
|
||||
// sRGB matrix
|
||||
extern const double pdfioSRGBWhitePoint[3] PDFIO_PUBLIC;
|
||||
// sRGB white point
|
||||
|
||||
|
||||
|
|
@ -93,7 +100,7 @@ extern bool pdfioContentPathCurve13(pdfio_stream_t *st, double x1, double y1, d
|
|||
extern bool pdfioContentPathCurve23(pdfio_stream_t *st, double x2, double y2, double x3, double y3) PDFIO_PUBLIC;
|
||||
extern bool pdfioContentPathLineTo(pdfio_stream_t *st, double x, double y) PDFIO_PUBLIC;
|
||||
extern bool pdfioContentPathMoveTo(pdfio_stream_t *st, double x, double y) PDFIO_PUBLIC;
|
||||
extern bool pdfioContentPathRect(pdfio_stream_t *st, pdfio_rect_t *rect) PDFIO_PUBLIC;
|
||||
extern bool pdfioContentPathRect(pdfio_stream_t *st, double x, double y, double width, double height) PDFIO_PUBLIC;
|
||||
extern bool pdfioContentRestore(pdfio_stream_t *st) PDFIO_PUBLIC;
|
||||
extern bool pdfioContentSave(pdfio_stream_t *st) PDFIO_PUBLIC;
|
||||
extern bool pdfioContentSetDashPattern(pdfio_stream_t *st, int phase, int on, int off) PDFIO_PUBLIC;
|
||||
|
|
@ -140,7 +147,7 @@ extern double pdfioImageGetWidth(pdfio_obj_t *obj) PDFIO_PUBLIC;
|
|||
|
||||
// Page dictionary helpers...
|
||||
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 double *white_point, double gamma) PDFIO_PUBLIC;
|
||||
extern bool pdfioPageDictAddCalibratedColorSpace(pdfio_dict_t *dict, const char *name, size_t num_colors, double gamma, const double matrix[3][3], const double white_point[3]) 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;
|
||||
|
||||
|
|
|
|||
Binary file not shown.
|
Before Width: | Height: | Size: 131 KiB After Width: | Height: | Size: 126 KiB |
313
testpdfio.c
313
testpdfio.c
|
|
@ -13,6 +13,7 @@
|
|||
|
||||
#include "pdfio-private.h"
|
||||
#include "pdfio-content.h"
|
||||
#include <math.h>
|
||||
|
||||
|
||||
//
|
||||
|
|
@ -24,6 +25,8 @@ static int do_unit_tests(void);
|
|||
static bool error_cb(pdfio_file_t *pdf, const char *message, bool *error);
|
||||
static ssize_t token_consume_cb(const char **s, size_t bytes);
|
||||
static ssize_t token_peek_cb(const char **s, char *buffer, size_t bytes);
|
||||
static int write_color_patch(pdfio_stream_t *st, bool device);
|
||||
static int write_color_test(pdfio_file_t *pdf, int number);
|
||||
static int write_page(pdfio_file_t *pdf, int number, pdfio_obj_t *image);
|
||||
|
||||
|
||||
|
|
@ -227,12 +230,9 @@ do_unit_tests(void)
|
|||
else
|
||||
return (1);
|
||||
|
||||
// Write a few pages...
|
||||
for (i = 1; i < 16; i ++)
|
||||
{
|
||||
if (write_page(outpdf, i, (i & 1) ? color_jpg : gray_jpg))
|
||||
return (1);
|
||||
}
|
||||
// Write a page with a color image...
|
||||
if (write_page(outpdf, 2, color_jpg))
|
||||
return (1);
|
||||
|
||||
// Copy the third page from the test PDF file...
|
||||
fputs("pdfioFileGetPage(2): ", stdout);
|
||||
|
|
@ -247,6 +247,14 @@ do_unit_tests(void)
|
|||
else
|
||||
return (1);
|
||||
|
||||
// Write a page with a grayscale image...
|
||||
if (write_page(outpdf, 4, gray_jpg))
|
||||
return (1);
|
||||
|
||||
// Write a page that tests multiple color spaces...
|
||||
if (write_color_test(outpdf, 5))
|
||||
return (1);
|
||||
|
||||
// Close the test PDF file...
|
||||
fputs("pdfioFileClose(\"testfiles/testpdfio.pdf\": ", stdout);
|
||||
if (pdfioFileClose(pdf))
|
||||
|
|
@ -337,6 +345,299 @@ token_peek_cb(const char **s, // IO - Test string
|
|||
}
|
||||
|
||||
|
||||
//
|
||||
// 'write_color_patch()' - Write a color patch...
|
||||
//
|
||||
|
||||
static int // O - 1 on failure, 0 on success
|
||||
write_color_patch(pdfio_stream_t *st, // I - Content stream
|
||||
bool device)// I - Use device color?
|
||||
{
|
||||
int col, // Current column
|
||||
row; // Current row
|
||||
double x, y, // Relative position
|
||||
r, // Radius
|
||||
hue, // Hue angle
|
||||
sat, // Saturation
|
||||
cc, // Computed color
|
||||
red, // Red value
|
||||
green, // Green value
|
||||
blue; // Blue value
|
||||
|
||||
|
||||
// Draw an 11x11 patch...
|
||||
for (col = 0; col < 21; col ++)
|
||||
{
|
||||
for (row = 0; row < 21; row ++)
|
||||
{
|
||||
// Compute color in patch...
|
||||
x = 0.1 * (col - 10);
|
||||
y = 0.1 * (row - 10);
|
||||
r = sqrt(x * x + y * y);
|
||||
|
||||
if (r == 0.0)
|
||||
{
|
||||
red = green = blue = 1.0;
|
||||
}
|
||||
else
|
||||
{
|
||||
if ((sat = fabs(x)) < fabs(y))
|
||||
sat = fabs(y);
|
||||
sat = pow(sat, 1.5);
|
||||
|
||||
x /= r;
|
||||
y /= r;
|
||||
hue = 3.0 * atan2(y, x) / M_PI;
|
||||
if (hue < 0.0)
|
||||
hue += 6.0;
|
||||
|
||||
cc = sat * (1.0 - fabs(fmod(hue, 2.0) - 1.0)) + 1.0 - sat;
|
||||
|
||||
if (hue < 1.0)
|
||||
{
|
||||
red = 1.0;
|
||||
green = cc;
|
||||
blue = 1.0 - sat;
|
||||
}
|
||||
else if (hue < 2.0)
|
||||
{
|
||||
red = cc;
|
||||
green = 1.0;
|
||||
blue = 1.0 - sat;
|
||||
}
|
||||
else if (hue < 3.0)
|
||||
{
|
||||
red = 1.0 - sat;
|
||||
green = 1.0;
|
||||
blue = cc;
|
||||
}
|
||||
else if (hue < 4.0)
|
||||
{
|
||||
red = 1.0 - sat;
|
||||
green = cc;
|
||||
blue = 1.0;
|
||||
}
|
||||
else if (hue < 5.0)
|
||||
{
|
||||
red = cc;
|
||||
green = 1.0 - sat;
|
||||
blue = 1.0;
|
||||
}
|
||||
else
|
||||
{
|
||||
red = 1.0;
|
||||
green = 1.0 - sat;
|
||||
blue = cc;
|
||||
}
|
||||
}
|
||||
|
||||
// Draw it...
|
||||
if (device)
|
||||
{
|
||||
// Use device CMYK color instead of a calibrated RGB space...
|
||||
double cyan = 1.0 - red; // Cyan color
|
||||
double magenta = 1.0 - green; // Magenta color
|
||||
double yellow = 1.0 - blue; // Yellow color
|
||||
double black = cyan; // Black color
|
||||
|
||||
if (black > magenta)
|
||||
black = magenta;
|
||||
if (black > yellow)
|
||||
black = yellow;
|
||||
|
||||
cyan -= black;
|
||||
magenta -= black;
|
||||
yellow -= black;
|
||||
|
||||
printf("pdfioContentSetFillColorDeviceCMYK(c=%g, m=%g, y=%g, k=%g): ", cyan, magenta, yellow, black);
|
||||
if (pdfioContentSetFillColorDeviceCMYK(st, cyan, magenta, yellow, black))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
}
|
||||
else
|
||||
{
|
||||
// Use calibrate RGB space...
|
||||
printf("pdfioContentSetFillColorRGB(r=%g, g=%g, b=%g): ", red, green, blue);
|
||||
if (pdfioContentSetFillColorRGB(st, red, green, blue))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
}
|
||||
|
||||
printf("pdfioContentPathRect(x=%g, y=%g, w=%g, h=%g): ", col * 9.0, row * 9.0, 9.0, 9.0);
|
||||
if (pdfioContentPathRect(st, col * 9.0, row * 9.0, 9.0, 9.0))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
fputs("pdfioContentFill(even_odd=false): ", stdout);
|
||||
if (pdfioContentFill(st, false))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
}
|
||||
}
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// 'write_color_test()' - Write a color test page...
|
||||
//
|
||||
|
||||
static int // O - 1 on failure, 0 on success
|
||||
write_color_test(pdfio_file_t *pdf, // I - PDF file
|
||||
int number) // I - Page number
|
||||
{
|
||||
pdfio_dict_t *dict; // Page dictionary
|
||||
pdfio_stream_t *st; // Page contents stream
|
||||
|
||||
|
||||
fputs("pdfioDictCreate: ", stdout);
|
||||
if ((dict = pdfioDictCreate(pdf)) != NULL)
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
fputs("pdfioPageDictAddCalibratedColorSpace(AdobeRGB): ", stdout);
|
||||
if (pdfioPageDictAddCalibratedColorSpace(dict, "AdobeRGB", 3, pdfioAdobeRGBGamma, pdfioAdobeRGBMatrix, pdfioAdobeRGBWhitePoint))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
fputs("pdfioPageDictAddCalibratedColorSpace(DisplayP3): ", stdout);
|
||||
if (pdfioPageDictAddCalibratedColorSpace(dict, "DisplayP3", 3, pdfioDisplayP3Gamma, pdfioDisplayP3Matrix, pdfioDisplayP3WhitePoint))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
fputs("pdfioPageDictAddCalibratedColorSpace(sRGB): ", stdout);
|
||||
if (pdfioPageDictAddCalibratedColorSpace(dict, "sRGB", 3, pdfioSRGBGamma, pdfioSRGBMatrix, pdfioSRGBWhitePoint))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
printf("pdfioFileCreatePage(%d): ", number);
|
||||
|
||||
if ((st = pdfioFileCreatePage(pdf, dict)) != NULL)
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
fputs("pdfioContentSave(): ", stdout);
|
||||
if (pdfioContentSave(st))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
fputs("pdfioContentSetFillColorSpace(AdobeRGB): ", stdout);
|
||||
if (pdfioContentSetFillColorSpace(st, "AdobeRGB"))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
fputs("pdfioContentMatrixTranslate(82, 180): ", stdout);
|
||||
if (pdfioContentMatrixTranslate(st, 82, 180))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
if (write_color_patch(st, false))
|
||||
return (1);
|
||||
|
||||
fputs("pdfioContentRestore(): ", stdout);
|
||||
if (pdfioContentRestore(st))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
fputs("pdfioContentSave(): ", stdout);
|
||||
if (pdfioContentSave(st))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
fputs("pdfioContentSetFillColorSpace(DisplayP3): ", stdout);
|
||||
if (pdfioContentSetFillColorSpace(st, "DisplayP3"))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
fputs("pdfioContentMatrixTranslate(316, 180): ", stdout);
|
||||
if (pdfioContentMatrixTranslate(st, 316, 180))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
if (write_color_patch(st, false))
|
||||
return (1);
|
||||
|
||||
fputs("pdfioContentRestore(): ", stdout);
|
||||
if (pdfioContentRestore(st))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
fputs("pdfioContentSave(): ", stdout);
|
||||
if (pdfioContentSave(st))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
fputs("pdfioContentSetFillColorSpace(sRGB): ", stdout);
|
||||
if (pdfioContentSetFillColorSpace(st, "sRGB"))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
fputs("pdfioContentMatrixTranslate(82, 414): ", stdout);
|
||||
if (pdfioContentMatrixTranslate(st, 82, 414))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
if (write_color_patch(st, false))
|
||||
return (1);
|
||||
|
||||
fputs("pdfioContentRestore(): ", stdout);
|
||||
if (pdfioContentRestore(st))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
fputs("pdfioContentSave(): ", stdout);
|
||||
if (pdfioContentSave(st))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
fputs("pdfioContentMatrixTranslate(316, 414): ", stdout);
|
||||
if (pdfioContentMatrixTranslate(st, 316, 414))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
if (write_color_patch(st, true))
|
||||
return (1);
|
||||
|
||||
fputs("pdfioContentRestore(): ", stdout);
|
||||
if (pdfioContentRestore(st))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
fputs("pdfioStreamClose: ", stdout);
|
||||
if (pdfioStreamClose(st))
|
||||
puts("PASS");
|
||||
else
|
||||
return (1);
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// 'write_page()' - Write a page to a PDF file.
|
||||
//
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user