From 7aac8dc8533347e21311b15186e0af82f1b22fd6 Mon Sep 17 00:00:00 2001
From: Martin Kretzschmar <mkretzschmar@src.gnome.org>
Date: Wed, 18 Sep 2002 20:32:18 +0000
Subject: Synched with Xpdf 0.92

this adds "decryption" support
testing this code after six weeks immediately gives me segfaults (image drawing) :-O
must have fixed that later without knowing :-O
---
(limited to 'pdf/xpdf/SFont.h')

diff --git a/pdf/xpdf/SFont.h b/pdf/xpdf/SFont.h
new file mode 100644
index 0000000..4758664
--- /dev/null
+++ b/pdf/xpdf/SFont.h
@@ -0,0 +1,127 @@
+//========================================================================
+//
+// SFont.h
+//
+// Base class for font rasterizers.
+//
+//========================================================================
+
+#ifndef SFONT_H
+#define SFONT_H
+
+#ifdef __GNUC__
+#pragma interface
+#endif
+
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include "gtypes.h"
+
+//------------------------------------------------------------------------
+
+class SFontEngine {
+public:
+
+  SFontEngine(Display *display, Visual *visual, int depth,
+	      Colormap colormap);
+  virtual ~SFontEngine();
+
+  // Use a TrueColor visual.  Pixel values are computed as:
+  //
+  //     (r << rShift) + (g << gShift) + (b << bShift)
+  //
+  // where r, g, and b are scaled to the ranges [0,rMax], [0,gMax],
+  // and [0,bMax], respectively.
+  virtual void useTrueColor(int rMax, int rShift, int gMax, int gShift,
+			    int bMax, int bShift);
+
+  // Use an RGB color cube.  <colors> is an array containing
+  // <nRGB>*<nRGB>*<nRGB> pixel values in red,green,blue order, e.g.,
+  // for <nRGB>=2, there will be 8 entries:
+  //
+  //        |--- colors[i] ---|
+  //     i  red    green  blue
+  //     -  -----  -----  -----
+  //     0  0000   0000   0000
+  //     1  0000   0000   ffff
+  //     2  0000   ffff   0000
+  //     3  0000   ffff   ffff
+  //     4  ffff   0000   0000
+  //     5  ffff   0000   ffff
+  //     6  ffff   ffff   0000
+  //     7  ffff   ffff   ffff
+  //
+  // The <colors> array is not copied and must remain valid for the
+  // lifetime of this SFont object.
+  virtual void useColorCube(Gulong *colors, int nRGB);
+
+protected:
+
+  // Find the closest match to (<r>,<g>,<b>).
+  Gulong findColor(int r, int g, int b);
+
+  //----- X parameters
+  Display *display;
+  Visual *visual;
+  int depth;
+  Colormap colormap;
+
+  GBool trueColor;		// true for TrueColor, false for RGB cube
+
+  //----- TrueColor parameters
+  int rMax, gMax, bMax;
+  int rShift, gShift, bShift;
+
+  //----- RGB color cube parameters
+  Gulong *colors;
+  int nRGB;
+};
+
+//------------------------------------------------------------------------
+
+class SFontFile {
+public:
+
+  // A typical subclass will provide a constructor along the lines of:
+  //
+  //     SomeFontFile(SomeFontEngine *engine, char *fontFileName);
+  SFontFile();
+
+  virtual ~SFontFile();
+
+private:
+};
+
+//------------------------------------------------------------------------
+
+class SFont {
+public:
+
+  // A typical subclass will provide a constructor along the lines of:
+  //
+  //     SomeFont(SomeFontFile *fontFile, double *m);
+  //
+  // where <m> is a transform matrix consisting of four elements,
+  // using the PostScript ordering conventions (without any
+  // translation):
+  //
+  //   [x' y'] = [x y] * [m0 m1]
+  //                     [m2 m3]
+  //
+  // This is the level at which fonts are cached, and so the font
+  // cannot be transformed after it is created.
+  SFont();
+
+  virtual ~SFont();
+
+  // Draw a character <c> at <x>,<y> in color (<r>,<g>,<b>).  The RGB
+  // values should each be in the range [0,65535].  Draws into <d>,
+  // clipped to the rectangle (0,0)-(<w>-1,<h>-1).  Returns true if
+  // the character was drawn successfully.
+  virtual GBool drawChar(Drawable d, int w, int h, GC gc,
+			 int x, int y, int r, int g, int b, Gushort c) = 0;
+
+protected:
+};
+
+#endif
--
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