int
main(void)
{
try {
/* This is where the data files are. Adjust as necessary. */
const wstring searchpath = L"../data";
const wstring outfile = L"starter_graphics.pdf";
PDFlib p;
double xt=20, x = 210, y=770, dy=90;
int font;
p.set_parameter(L"SearchPath", searchpath);
/* This means we must check return values of load_font() etc. */
p.set_parameter(L"errorpolicy", L"return");
if (p.begin_document(outfile, L"") == -1) {
wcerr << L"Error: " << p.get_errmsg() << endl; return 2;
}
p.set_info(L"Creator", L"PDFlib starter sample");
p.set_info(L"Title", L"starter_graphics");
font = p.load_font(L"Helvetica", L"winansi", L"");
if (font == -1) {
wcerr << L"Error: " << p.get_errmsg() << endl;
return 2;
}
/* Start an A4 page */
p.begin_page_ext(0, 0, L"width=a4.width height=a4.height");
/* Set the font */
p.setfont(font, 14);
/* Set the line width */
p.setlinewidth(2.0);
/* Set the stroke color */
p.setcolor(L"stroke", L"rgb", 0.0, 0.5, 0.5, 0.0);
/* Set the fill color */
p.setcolor(L"fill", L"rgb", 0.0, 0.85, 0.85, 0.0);
/* -------------
* Stroke a line
* -------------
*/
/* Set the current point for graphics output */
p.moveto(x, y);
/* Draw a line from the current point to the supplied point */
p.lineto(x+300, y+50);
/* Stroke the path using the current line width and stroke color, and
* clear it
*/
p.stroke();
/* Output some descriptive black text */
p.fit_textline(L"lineto() and stroke()", xt, y, L"fillcolor={gray 0}");
/* --------------
* Stroke a curve
* --------------
*/
/* Set the current point for graphics output */
p.moveto(x, y-=dy);
/* Draw a Bézier curve from the current point to (x3, y3), using three
* control points
*/
p.curveto(x+50, y+40, x+200, y+80, x+300, y+30);
/* Stroke the path using the current line width and stroke color, and
* clear it
*/
p.stroke();
/* Output some descriptive black text */
p.fit_textline(L"curveto() and stroke()", xt, y, L"fillcolor={gray 0}");
/* ---------------
* Stroke a circle
* ---------------
*/
/* Draw a circle at position (x, y) with a radius of 40 */
p.circle(x, y-=dy, 40);
/* Stroke the path using the current line width and stroke color, and
* clear it
*/
p.stroke();
/* Output some descriptive black text */
p.fit_textline(L"circle() and stroke()", xt, y, L"fillcolor={gray 0}");
/* ---------------------
* Stroke an arc segment
* ---------------------
*/
/* Draw an arc segment counterclockwise at position (x, y) with a radius
* of 40 starting at an angle of 90 degrees and ending at 180 degrees
*/
p.arc(x, y-=dy+20, 40, 90, 180);
/* Stroke the path using the current line width and stroke color, and
* clear it
*/
p.stroke();
/* Output some descriptive black text */
p.fit_textline(L"arc() and stroke()", xt, y, L"fillcolor={gray 0}");
/* ------------------
* Stroke a rectangle
* ------------------
*/
/* Draw a rectangle at position (x, y) with a width of 200 and a height
* of 50
*/
p.rect(x, y-=dy, 200, 50);
/* Stroke the path using the current line width and stroke color, and
* clear it
*/
p.stroke();
/* Output some descriptive black text */
p.fit_textline(L"rect() and stroke()", xt, y, L"fillcolor={gray 0}");
/* ----------------
* Fill a rectangle
* ----------------
*/
/* Draw a rectangle at position (x, y) with a width of 200 and a height
* of 50
*/
p.rect(x, y-=dy, 200, 50);
/* Fill the path using current fill color, and clear it */
p.fill();
/* Output some descriptive black text */
p.fit_textline(L"rect() and fill()", xt, y, L"fillcolor={gray 0}");
/* ---------------------------
* Fill and stroke a rectangle
* ---------------------------
*/
/* Draw a rectangle at position (x, y) with a width of 200 and a height
* of 50
*/
p.rect(x, y-=dy, 200, 50);
/* Fill and stroke the path using the current line width, fill color,
* and stroke color, and clear it
*/
p.fill_stroke();
/* Output some descriptive black text */
p.fit_textline(L"rect() and fill_stroke()", xt, y,
L"fillcolor={gray 0}");
/* -------------------------------------------------------------
* Draw a line and an arc, close the path and fill and stroke it
* -------------------------------------------------------------
*/
/* Set the current point for graphics output */
p.moveto(x-40, y-=dy);
/* Draw a line from the current point to the supplied point */
p.lineto(x, y);
/* Draw an arc segment counterclockwise at position (x, y) with a radius
* of 40 starting at an angle of 90 degrees and ending at 180 degrees
*/
p.arc(x, y, 40, 90, 180);
/* Close the path and stroke and fill it, i.e. close the current subpath
* (add a straight line segment from the current point to the starting
* point of the path), and stroke and fill the complete current path
*/
p.closepath_fill_stroke();
/* Output some descriptive black text */
p.fit_textline(L"lineto(), arc(), and", xt, y+20,
L"fillcolor={gray 0}");
p.fit_textline(L"closepath_fill_stroke()", xt, y,
L"fillcolor={gray 0}");
/* -----------------------------------------------------------------
* Draw a rectangle and use it as the clipping a path. Draw and fill
* a circle and clip it according to the clipping path defined.
* -----------------------------------------------------------------
*/
/* Save the current graphics state including the current clipping
* path which is set to the entire page by default
*/
p.save();
/* Draw a rectangle at position (x, y) with a width of 200 and a height
* of 50
*/
p.rect(x, y-=dy, 200, 50);
/* Use the current path as the clipping path for subsequent operations
*/
p.clip();
/* Draw a circle at position (x, y) with a radius of 100 */
p.circle(x, y, 80);
/* Fill the path with the current fill color and clear it
*/
p.fill();
/* Restore the graphics state which has been saved above */
p.restore();
/* Output some descriptive black text */
p.fit_textline(L"rect(), clip(),", xt, y+20,
L"fillcolor={gray 0}");
p.fit_textline(L"circle(), and fill()", xt, y,
L"fillcolor={gray 0}");
p.end_page_ext(L"");
p.end_document(L"");
}
catch (PDFlib::Exception &ex) {
wcerr << L"PDFlib exception occurred:" << endl
<< L"[" << ex.get_errnum() << L"] " << ex.get_apiname()
<< L": " << ex.get_errmsg() << endl;
return 2;
}
return 0;
}
int
main(void)
{
try {
/* This is where the data files are. Adjust as necessary. */
const wstring searchpath = L"../data";
const wstring outfile = L"starter_color.pdf";
PDFlib p;
int font, spot;
int y = 800, x = 50, xoffset1=80, xoffset2 = 100, yoffset = 70, r = 30;
double icchandle;
p.set_parameter(L"SearchPath", searchpath);
/* This means we must check return values of load_font() etc. */
p.set_parameter(L"errorpolicy", L"return");
if (p.begin_document(outfile, L"") == -1) {
wcerr << L"Error: " << p.get_errmsg() << endl;
return 2;
}
p.set_info(L"Creator", L"PDFlib starter sample");
p.set_info(L"Title", L"starter_color");
/* Load the font */
font = p.load_font(L"Helvetica", L"winansi", L"");
if (font == -1) {
wcerr << L"Error: " << p.get_errmsg() << endl;
return 2;
}
/* Start the page */
p.begin_page_ext(0, 0, L"width=a4.width height=a4.height");
p.setfont(font, 14);
/* -------------------------------------------------------------------
* Use default colors
*
* If no special color is set the default values will be used. The
* default values are restored at the beginning of the page.
* 0=black in the Gray color space is the default fill and stroke
* color in many cases, as shown in our sample.
* -------------------------------------------------------------------
*/
/* Fill a circle with the default black fill color */
p.circle(x, y-=yoffset, r);
p.fill();
/* Output text with default black fill color */
p.fit_textline( L"Circle and text filled with default color {gray 0}",
x+xoffset2, y, L"");
p.fit_textline(L"1.", x+xoffset1, y, L"");
/* -------------------------------------------------------------------
* Use the Gray color space
*
* Gray color is defined by Gray values between 0=black and 1=white.
* -------------------------------------------------------------------
*/
/* Using setcolor(), set the current fill color to a light gray
* represented by (0.5, 0, 0, 0) which defines 50% gray. Since gray
* colors are defined by only one value, the last three function
* parameters must be set to 0.
*/
p.setcolor(L"fill", L"gray", 0.5, 0, 0, 0);
/* Fill a circle with the current fill color defined above */
p.circle(x, y-=yoffset, r);
p.fill();
/* Output text with the current fill color */
p.fit_textline(L"Circle and text filled with {gray 0.5}",
x+xoffset2, y, L"");
/* Alternatively, you can set the fill color in the call to
* fit_textline() using the L"fillcolor" option. This case applies the
* fill color just the single function call. The current fill color
* won't be affected.
*/
p.fit_textline(L"2.", x+xoffset1, y, L"fillcolor={gray 0.5}");
/* --------------------------------------------------------------------
* Use the RGB color space
*
* RGB color is defined by RGB triples, i.e. three values between 0 and
* 1 specifying the percentage of red, green, and blue.
* (0, 0, 0) is black and (1, 1, 1) is white. The commonly used RGB
* color values in the range 0...255 must be divided by 255 in order to
* scale them to the range 0...1 as required by PDFlib.
* --------------------------------------------------------------------
*/
/* Use setcolor() to set the fill color to a grass-green
* represented by (0.1, 0.95, 0.3, 0) which defines 10% red, 95% green,
* 30% blue. Since RGB colors are defined by only three values, the last
* function parameter must be set to 0.
*/
p.setcolor(L"fill", L"rgb", 0.1, 0.95, 0.3, 0);
/* Draw a circle with the current fill color defined above */
p.circle(x, y-=yoffset, r);
p.fill();
/* Output a text line with the RGB fill color defined above */
p.fit_textline(L"Circle and text filled with {rgb 0.1 0.95 0.3}",
x+xoffset2, y, L"");
/* Alternatively, you can set the fill color in the call to
* fit_textline() using the L"fillcolor" option. This case applies the
* fill color just the single function call. The current fill color
* won't be affected.
*/
p.fit_textline(L"3.", x+xoffset1, y, L"fillcolor={rgb 0.1 0.95 0.3}");
/* --------------------------------------------------------------------
* Use the CMYK color space
*
* CMYK color is defined by four CMYK values between 0 = no color and
* 1 = full color representing cyan, magenta, yellow, and black values;
* (0, 0, 0, 0) is white and (0, 0, 0, 1) is black.
* --------------------------------------------------------------------
*/
/* Use setcolor() to set the current fill color to a pale
* orange, represented by (0.1, 0.7, 0.7, 0.1) which defines 10% Cyan,
* 70% Magenta, 70% Yellow, and 10% Black.
*/
p.setcolor(L"fill", L"cmyk", 0.1, 0.7, 0.7, 0.1);
/* Fill a circle with the current fill color defined above */
p.circle(x, y-=yoffset, r);
p.fill();
/* Output a text line with the CMYK fill color defined above */
p.fit_textline(L"Circle and text filled with {cmyk 0.1 0.7 0.7 0.1}",
x+xoffset2, y, L"");
/* Alternatively, you can set the fill color in the call to
* fit_textline() using the L"fillcolor" option. This case applies the
* fill color just the single function call. The current fill color
* won't be affected.
*/
p.fit_textline(L"4.", x+xoffset1, y,
L"fillcolor={cmyk 0.1 0.7 0.7 0.1}");
/* --------------------------------------------------------------------
* Use a Lab color
*
* Device-independent color in the CIE L*a*b* color space is specified
* by a luminance value in the range 0-100 and two color values in the
* range -127 to 128. The first value contains the green-red axis,
* while the second value contains the blue-yellow axis.
* --------------------------------------------------------------------
*/
/* Set the current fill color to a loud blue, represented by
* (100, -127, -127, 0). Since Lab colors are defined by only three
* values, the last function parameter must be set to 0.
*/
p.setcolor(L"fill", L"lab", 100, -127, -127, 0);
/* Fill a circle with the fill color defined above */
p.circle(x, y-=yoffset, r);
p.fill();
/* Output a text line with the Lab fill color defined above */
p.fit_textline(L"Circle and text filled with {lab 100 -127 -127}",
x+xoffset2, y, L"");
/* Alternatively, you can set the fill color in the call to
* fit_textline() using the L"fillcolor" option. This case applies the
* fill color just the single function call. The current fill color
* won't be affected.
*/
p.fit_textline(L"5.", x+xoffset1, y, L"fillcolor={lab 100 -127 -127}");
/* ---------------------------------------------------------------
* Use an ICC based color
*
* ICC-based colors are specified with the help of an ICC profile.
* ---------------------------------------------------------------
*/
/* Load the sRGB profile. sRGB is guaranteed to be always available */
icchandle = p.load_iccprofile(L"sRGB", L"usage=iccbased");
/* Set the sRGB profile. (Accordingly, you can use
* L"setcolor:iccprofilergb" or L"setcolor:iccprofilegray" with an
* appropriate profile)
*/
p.set_value(L"setcolor:iccprofilergb", icchandle);
/* Use setcolor() with the L"iccbasedrgb" color space to set the current
* fill and stroke color to a grass-green, represented
* by the RGB color values (0.1 0.95 0.3 0) which define 10% Red,
* 95% Green, and 30% Blue. Since iccbasedrgb colors are defined by only
* three values, the last function parameter must be set to 0.
*/
p.setcolor(L"fill", L"iccbasedrgb", 0.1, 0.95, 0.3, 0);
/* Fill a circle with the ICC based RGB fill color defined above */
p.circle(x, y-=yoffset, r);
p.fill();
/* Output a text line with the ICC based RGB fill color defined above */
p.fit_textline(
L"Circle and text filled with {iccbasedrgb 0.1 0.95 0.3}",
x+xoffset2, y, L"");
/* Alternatively, you can set the fill color in the call to
* fit_textline() using the L"fillcolor" option. This case applies the
* fill color just the single function call. The current fill color
* won't be affected.
*/
p.fit_textline(L"6.", x+xoffset1, y,
L"fillcolor={iccbasedrgb 0.1 0.95 0.3}");
/* --------------------------------------------------------------------
* Use a spot color
*
* Spot color (separation color space) is a predefined or arbitrarily
* named custom color with an alternate representation in one of the
* other color spaces above; this is generally used for preparing
* documents which are intended to be printed on an offset printing
* machine with one or more custom colors. The tint value (percentage)
* ranges from 0 = no color to 1 = maximum intensity of the spot color.
* --------------------------------------------------------------------
*/
/* Define the spot color L"PANTONE 281 U" from the builtin color
* library PANTONE
*/
spot = p.makespotcolor(L"PANTONE 281 U");
/* Set the spot color L"PANTONE 281 U" with a tint value of 1 (=100%)
* and output some text. Since spot colors are defined by only two
* values, the last two function parameters must be set to 0.
*/
p.setcolor(L"fill", L"spot", spot, 1.0, 0, 0);
/* Fill a circle with the ICC based RGB fill color defined above */
p.circle(x, y-=yoffset, r);
p.fill();
p.fit_textline(
L"Circle and text filled with {spotname {PANTONE 281 U} 1}",
x+xoffset2, y, L"");
/* Alternatively, you can set the fill color in the call to
* fit_textline() using the L"fillcolor" option. This case applies the
* fill color just the single function call. The current fill color
* won't be affected.
*/
p.fit_textline(L"7.", x+xoffset1, y,
L"fillcolor={spotname {PANTONE 281 U} 1}");
/* or */
wostringstream buf;
buf.str(L"");
buf << L"fillcolor={spot " << spot << L" 1}";
p.fit_textline(L"7.", x+xoffset1, y, buf.str());
/* ----------------------------------------------------------
* For using the Pattern color space, see the Cookbook topics
* graphics/fill_pattern and images/background_pattern.
* ----------------------------------------------------------
*/
/* ---------------------------------------------------------
* For using the Shading color space, see the Cookbook topic
* color/color_gradient.
* ---------------------------------------------------------
*/
p.end_page_ext(L"");
p.end_document(L"");
}
catch (PDFlib::Exception &ex) {
wcerr << L"PDFlib exception occurred:" << endl
<< L"[" << ex.get_errnum() << L"] " << ex.get_apiname()
<< L": " << ex.get_errmsg() << endl;
return 2;
}
return 0;
}