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NPWGraphics.h File Reference

Helper functions for graphics. More...

#include "NPWBase.h"

Go to the source code of this file.


Defines

#define NPWGraphicsMove(pdf, x, y)   NPWGraphicsCmd(pdf, "m", "ff", (NPWFloat)(x), (NPWFloat)(y))
 Path "move" command.
#define NPWGraphicsLine(pdf, x, y)   NPWGraphicsCmd(pdf, "l", "ff", (NPWFloat)(x), (NPWFloat)(y))
 Path "line" command.
#define NPWGraphicsBezier(pdf, x1, y1, x2, y2, x3, y3)
 Path "bezier" command.
#define NPWGraphicsClosePath(pdf)   NPWGraphicsCmd(pdf, "h", "")
 Close path.
#define NPWGraphicsRectangle(pdf, x, y, w, h)   NPWGraphicsCmd(pdf, "re", "ffff", (NPWFloat)(x), (NPWFloat)(y), (NPWFloat)(w), (NPWFloat)(h))
 Create a rectangular path.
#define NPWGraphicsEllipse(pdf, x0, y0, rx, ry)
 Create an elliptic path.
#define NPWGraphicsStroke(pdf)   NPWGraphicsCmd(pdf, "S", "")
 Stroke path.
#define NPWGraphicsCloseStroke(pdf)   NPWGraphicsCmd(pdf, "s", "")
 Close and stroke path.
#define NPWGraphicsFill(pdf)   NPWGraphicsCmd(pdf, "f", "")
 Fill path using nonzero winding number rule.
#define NPWGraphicsFillEO(pdf)   NPWGraphicsCmd(pdf, "f*", "")
 Fill path using even-odd rule.
#define NPWGraphicsFillStroke(pdf)   NPWGraphicsCmd(pdf, "B", "")
 Fill path using nonzero winding number rule, then stroke it.
#define NPWGraphicsFillEOStroke(pdf)   NPWGraphicsCmd(pdf, "B*", "")
 Fill path using even-odd rule, then stroke it.
#define NPWGraphicsCloseFillStroke(pdf)   NPWGraphicsCmd(pdf, "b", "")
 Close path, fill it using nonzero winding number rule, then stroke it.
#define NPWGraphicsCloseFillEOStroke(pdf)   NPWGraphicsCmd(pdf, "b*", "")
 Close path, fill it using even-odd rule, then stroke it.
#define NPWGraphicsEndPath(pdf)   NPWGraphicsCmd(pdf, "n", "")
 Discard path.
#define NPWGraphicsClip(pdf)   NPWGraphicsCmd(pdf, "W", "")
 Use path to define the clipping region with nonzero winding number rule.
#define NPWGraphicsClipEO(pdf)   NPWGraphicsCmd(pdf, "W*", "")
 Use path to define the clipping region with even-odd rule.
#define NPWGraphicsGrayStroke(pdf, g)   NPWGraphicsCmd(pdf, "G", "f", (NPWFloat)(g))
 Define the gray shade for stroking.
#define NPWGraphicsGray(pdf, g)   NPWGraphicsCmd(pdf, "g", "f", (NPWFloat)g)
 Define the gray shade for filling.
#define NPWGraphicsRGBStroke(pdf, r, g, b)   NPWGraphicsCmd(pdf, "RG", "fff", (NPWFloat)(r), (NPWFloat)(g), (NPWFloat)(b))
 Define the RGB color for stroking.
#define NPWGraphicsRGB(pdf, r, g, b)   NPWGraphicsCmd(pdf, "rg", "fff", (NPWFloat)(r), (NPWFloat)(g), (NPWFloat)(b))
 Define the RGB color for filling.
#define NPWGraphicsCMYKStroke(pdf, c, m, y, k)   NPWGraphicsCmd(pdf, "K", "ffff", (NPWFloat)(c), (NPWFloat)(m), (NPWFloat)(y), (NPWFloat)(k))
 Define the CMYK color for stroking.
#define NPWGraphicsCMYK(pdf, c, m, y, k)   NPWGraphicsCmd(pdf, "k", "ffff", (NPWFloat)(c), (NPWFloat)(m), (NPWFloat)(y), (NPWFloat)(k))
 Define the CMYK color for filling.
#define NPWGraphicsSave(pdf)   NPWGraphicsCmd(pdf, "q", "")
 Save graphics state.
#define NPWGraphicsRestore(pdf)   NPWGraphicsCmd(pdf, "Q", "")
 Restore graphics state.
#define NPWGraphicsConcatCTM(pdf, a, b, c, d, e, f)
 Concatenate a matrix to the current coordinate transform matrix.
#define NPWGraphicsSetLineWidth(pdf, w)   NPWGraphicsCmd(pdf, "w", "f", (NPWFloat)(w))
 Set line width for stroking.
#define NPWGraphicsSetLineCap(pdf, c)   NPWGraphicsCmd(pdf, "j", "f", c)
 Set line cap.
#define NPWGraphicsSetLineJoin(pdf, j)   NPWGraphicsCmd(pdf, "J", "f", j)
 Set line join.
#define NPWGraphicsSetMiterLimit(pdf, l)   NPWGraphicsCmd(pdf, "w", "f", (NPWFloat)(l))
 Set miter limit.
#define NPWInlineImageBegin(pdf, w, h, cs, bpc, f)
 Begin an inline raster image (must be followed by the raster data written with NPWFilterBegin, NPWFilterWrite and NPWFilterEnd).
#define NPWInlineImageEnd(pdf)   NPWWrite(pdf, "EI\n", -1);
 End an inline image.
#define NPWGraphicsSetCharSpace(pdf, s)   NPWGraphicsCmd(pdf, "Tc", "f", (NPWFloat)(s))
 Set additional space between each character pair (positive to reduce space).
#define NPWGraphicsSetWordSpace(pdf, s)   NPWGraphicsCmd(pdf, "Tw", "f", (NPWFloat)(s))
 Set additional space between each word.
#define NPWGraphicsSetHorizontalScaling(pdf, s)   NPWGraphicsCmd(pdf, "Tz", "f", (NPWFloat)(s))
 Set horizontal scaling.
#define NPWGraphicsSetTextLeading(pdf, leading)   NPWGraphicsCmd(pdf, "TL", "f", (NPWFloat)(leading))
 Set text leading (distance between lines, negative to go downward).
#define NPWGraphicsSetTextFont(pdf, font, size)   NPWGraphicsCmd(pdf, "Tf", "Sf", font, -1, (NPWFloat)(size))
 Set text font (NPWFontNameCourier etc.) and size.
#define NPWGraphicsSetTextRenderingMode(pdf, render)   NPWGraphicsCmd(pdf, "Tr", "f", (NPWFloat)(render))
 Set text rendering mode (default = kNPWTextRenderingModeFill).
#define NPWGraphicsSetTextRise(pdf, rise)   NPWGraphicsCmd(pdf, "Ts", "f", (NPWFloat)(rise))
 Set text rise (positive for superscript).
#define NPWGraphicsBeginText(pdf)   NPWGraphicsCmd(pdf, "BT", "")
 Begin writing text.
#define NPWGraphicsEndText(pdf)   NPWGraphicsCmd(pdf, "ET", "")
 End writing text.
#define NPWGraphicsMoveText(pdf, x, y)   NPWGraphicsCmd(pdf, "Td", "ff", (NPWFloat)(x), (NPWFloat)(y))
 Move position of next text drawing.
#define NPWGraphicsNL(pdf)   NPWGraphicsCmd(pdf, "T*", "")
 Move to beginning of next line.
#define NPWGraphicsShowText(pdf, str, len)   NPWGraphicsCmd(pdf, "Tj", "s", str, len)
 Show text.
#define NPWGraphicsNLShowText(pdf, str, len)   NPWGraphicsCmd(pdf, "'", "s", str, len)
 Move to beginning of next line, then show text.
#define NPWGraphicsNLShowTextSp(pdf, aw, ac, str, len)   NPWGraphicsCmd(pdf, "\"", "ffs", (NPWFloat)(aw), (NPWFloat)(ac), str, len)
 Move to beginning of next line, set space between words and characters, then show text.
#define NPWGraphicsHorSkip(pdf, dx)   NPWGraphicsCmd(pdf, "TJ", "[f]", -(NPWFloat)dx)
 Adjust horizontal displacement by moving to the right, in 1/1000 font size.

Enumerations

enum  { kNPWLineCapButt = 0, kNPWLineCapRound, kNPWLineCapSquare }
 Line cap type. More...
enum  { kNPWLineJoinMitter = 0, kNPWLineJoinRound, kNPWLineJoinBevel }
 Line join type. More...
enum  {
  kNPWTextRenderingModeFill = 0, kNPWTextRenderingModeStroke, kNPWTextRenderingModeFillStroke, kNPWTextRenderingModeInvisible,
  kNPWTextRenderingModeFillClip, kNPWTextRenderingModeStrokeClip, kNPWTextRenderingModeFillStrokeClip, kNPWTextRenderingModeClip
}
 Text rendering modes. More...

Functions

NPWErr NPWGraphicsCmd (NPW *pdf, NPWConstText cmd, NPWConstText fmt,...)
 Write arguments and a command.

Detailed Description

Helper functions for graphics.

Author:
Yves Piguet. Copyright 2008-2010, Yves Piguet

Definition in file NPWGraphics.h.

Define Documentation

#define NPWGraphicsBezier ( pdf,
x1,
y1,
x2,
y2,
x3,
y3   ) 

Value:

NPWGraphicsCmd(pdf, "c", "ffffff", \
        (NPWFloat)(x1), (NPWFloat)(y1), (NPWFloat)(x2), (NPWFloat)(y2), (NPWFloat)(x3), (NPWFloat)(y3))
Path "bezier" command.

Definition at line 31 of file NPWGraphics.h.

#define NPWGraphicsConcatCTM ( pdf,
a,
b,
c,
d,
e,
f   ) 

Value:

NPWGraphicsCmd(pdf, "cm", "ffffff", \
        (NPWFloat)(a), (NPWFloat)(b), (NPWFloat)(c), (NPWFloat)(d), (NPWFloat)(e), (NPWFloat)(f))
Concatenate a matrix to the current coordinate transform matrix.

Definition at line 141 of file NPWGraphics.h.

#define NPWGraphicsEllipse ( pdf,
x0,
y0,
rx,
ry   ) 

Value:

do { \
        NPWGraphicsMove(pdf, (x0) - (rx), y0); \
        NPWGraphicsBezier(pdf, \
                (x0) - (rx), (y0) + (ry) * 55 / 100, \
                (x0) - (rx) * 55 / 100, (y0) + (ry), \
                x0, (y0) + (ry)); \
        NPWGraphicsBezier(pdf, \
                (x0) + (rx) * 55 / 100, (y0) + (ry), \
                (x0) + (rx), (y0) + (ry) * 55 / 100, \
                (x0) + (rx), y0); \
        NPWGraphicsBezier(pdf, \
                (x0) + (rx), (y0) - (ry) * 55 / 100, \
                (x0) + (rx) * 55 / 100, (y0) - (ry), \
                x0, (y0) - (ry)); \
        NPWGraphicsBezier(pdf, \
                (x0) - (rx) * 55 / 100, (y0) - (ry), \
                (x0) - (rx), (y0) - (ry) * 55 / 100, \
                (x0) - (rx), y0); \
        NPWGraphicsClosePath(pdf); \
    } while (0)
Create an elliptic path.

Definition at line 42 of file NPWGraphics.h.

#define NPWInlineImageBegin ( pdf,
w,
h,
cs,
bpc,
f   ) 

Value:

do { \
        NPWWrite(pdf, "BI\n/W ", -1); \
        NPWWriteInt(pdf, w, -1); \
        NPWWrite(pdf, "\n/H ", -1); \
        NPWWriteInt(pdf, h, -1); \
        NPWWrite(pdf, "\n/CS ", -1); \
        NPWWrite(pdf, cs, -1); \
        NPWWrite(pdf, "\n/BPC ", -1); \
        NPWWriteInt(pdf, bpc, -1); \
        NPWWrite(pdf, "\n/F ", -1); \
        NPWWrite(pdf, f, -1); \
        NPWWrite(pdf, "\nID\n", -1); \
    } while (0)
Begin an inline raster image (must be followed by the raster data written with NPWFilterBegin, NPWFilterWrite and NPWFilterEnd).

Definition at line 159 of file NPWGraphics.h.

Enumeration Type Documentation

anonymous enum

Line cap type.

Enumerator:
kNPWLineCapButt  butt cap
kNPWLineCapRound  round cap
kNPWLineCapSquare  square cap

Definition at line 119 of file NPWGraphics.h.

anonymous enum

Line join type.

Enumerator:
kNPWLineJoinMitter  mitter join
kNPWLineJoinRound  round join
kNPWLineJoinBevel  bevel join

Definition at line 127 of file NPWGraphics.h.

anonymous enum

Text rendering modes.

Enumerator:
kNPWTextRenderingModeFill  fill text (normal)
kNPWTextRenderingModeStroke  stroke text
kNPWTextRenderingModeFillStroke  fill, then stroke text
kNPWTextRenderingModeInvisible  do nothing (invisible)
kNPWTextRenderingModeFillClip  fill text and add to path for clipping
kNPWTextRenderingModeStrokeClip  stroke text and add to path for clipping
kNPWTextRenderingModeFillStrokeClip  fill, then stroke text and add to path for clipping
kNPWTextRenderingModeClip  add text to path for clipping

Definition at line 178 of file NPWGraphics.h.

Function Documentation

NPWErr NPWGraphicsCmd ( NPW *  pdf,
NPWConstText  cmd,
NPWConstText  fmt,
  ... 
)

Write arguments and a command.

Parameters:
pdf reference to NPW structure
[in] cmd PDF command
[in] fmt argument types (f=float, i=int, S=raw string+len, s=PDF string+len)
Returns:
error code (kNPWErrOk for success)

Definition at line 21 of file NPWGraphics.c.

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Copyright 2007-2010, Yves Piguet.
All rights reserved.