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Perl Script | 1998-04-05 | 32.0 KB | 899 lines | [TEXT/McPL] |
- #!/usr/local/bin/perl
-
- # $Id: qd.pl,v 1.1.1.1 1998/01/26 14:38:46 lstein Exp $
-
- # This is a package of routines that let you create Macintosh
- # PICT files from within perl. It implements a subset of Quickdraw
- # drawing commands, primarily those related to line drawing, rectangles,
- # ovals, polygons, and text. Flagrantly absent are: regions and the
- # snazzy color transfer modes. Regions are absent because they were
- # more trouble than I had time for, and the transfer modes because I
- # never use them. (The latter shouldn't be too hard to add.) Also
- # missing are the pixmap commands. If you want to do pixmaps, you
- # should be using the ppm utilities.
-
- # A QUICK TUTORIAL ON QUICKDRAW
- #
- # Quickdraw is not Postscript. You cannot write routines in it or get
- # (any useful) information out of it. Quickdraw pictures are a series of
- # drawing commands, concatenated together in a binary format.
- #
- # A Macintosh picture consists of a header describing the size of the
- # picture and its bounding rectangle, followed by a series of drawing
- # commands, followed by a termination code. This perl library is
- # modeled closely on the way that you would draw a picture on the Mac.
- # First you open the picture with the &qd'OpenPicture() command. This
- # initializes some data structures. Then you call a series of drawing
- # subroutines, such as &qd'TextFont(), &qd'MoveTo(), &qd'DrawString().
- # These routines append their data to the growing (but still private)
- # picture. You then close the picture with &qd'ClosePicture. This
- # returns a scalar variable containing the binary picture data.
-
- # RECTANGLES
- #
- # To open a picture you need to define a rectangle that will serve as
- # its frame and will define its drawing area. The rectangle is (of
- # course) a binary structure. The following utilities allow you to
- # create and manipulate rectangles:
- #
- # &qd'SetRect(*myRect,left,top,right,bottom); # Set the sides of $myRect
- # &qd'OffsetRect(*myRect,deltaH,deltaV); # Shift the rectangle as indicated
- # &qd'InsetRect(*myRect,deltaH,deltaV); # Shrink rectangle by size indicated
-
-
- # OPENING A PICTURE
- #
- # Pass a previously-defined rectangle to the routine OpenPicture. Only one picture
- # may be open at a time. The rectangle defines the drawing area in pixels.
- # A printer page is 8.5 x 11 inches, at 72 pixels per inch = 612 x 792 pixels.
- #
- # &qd'OpenPicture($myRect);
- #
- # You will next very likely want to set the clipping rectangle to the same rectangle
- # you used to open the picture with. Clipping rectangles limit quickdraw's drawing
- # to the area within the rectangle. Even if you don't use clipping, however, it's a
- # good idea to define the rectangle because some drawing programs behave eratically
- # when displaying unclipped pictures.
- #
- # You then issue drawing commands. When you're done you can get the picture data with
- # something like $pictData = &qd'ClosePicture;
-
- #
- # SETTING THE FOREGROUND AND BACKGROUND COLORS
- #
- # The foreground color is the color of the ink when a "frame" or "paint" command
- # is given. The background color is the color of the erased area when an "erase"
- # command is given. The defaults are black and white. The colors can be changed
- # in either of two ways:
- #
- # 1. The "old" 8-color system: black, white, red, green, blue, cyan, magenta, yellow
- # Call the routines &qd'FgColor() and &qd'BgColor() with one of the constants
- # $qd'REDCOLOR,$qd'GREENCOLOR, etc. This gives you a limited number of highly
- # satured colors.
- #
- # 2. The new 24-bit color system. Call the routines &qd'RGBForeColor() and
- # &qd'RGBBackColor(), passing the routines the red, green and blue components
- # of the color. These components are two-byte unsigned integers, so you can choose
- # any value between 0x000 and 0xFFFF. Higher is darker, so:
- # (0x0000,0x0000,0x0000) = BLACK
- # (0xFFFFF,0xFFFF,0xFFFF) = WHITE
- # (0xFFFFF,0x0000,0x0000) = PURE RED
- # etc.
-
-
- # SETTING THE PATTERN
- #
- # Like colors, the drawing commands use the current pattern, a 32 row x 32 column
- # bit array that defines the pattern of the "ink".
- # The default pattern is $qd'BLACK, which is solid black. The only
- # other pattern I've defined is $qd'GRAY, which is a 50% checkerboard. You
- # might want to define others.
- #
- # The current pattern is set using &qd'PenPat($myPattern).
-
-
- # LINE DRAWING
- #
- # Quickdraw has the concept of the "current point" of the pen. Generally
- # you move the pen to a point and then start drawing. The next time you draw,
- # the pen will be wherever the last drawing command left it. In addition, the
- # pen has a width, a pattern and a color. In the below descriptions,
- # h=horizontal, v=vertical
- #
- # &qd'MoveTo(h,v) # Move to indicated coordinates (0,0 is upper left of picture)
- # &qd'LineTo(h,v) # Draw from current position to indicated position
- # &qd'Line(dh,dv) # Draw a line dh pixels horizontally, dv pixels vertically,
- # starting at current position
- # &qd'PenSize(h,v) # Set the size of the pen to h pixels wide, v pixels high
-
-
- # PEN SCALING
- #
- # The original quickdraw was incapable of drawing at higher than the screen resolution,
- # so even if the PenSize is set to (1,1) the lines will appear chunky when printed out
- # on the laserwriter (which has four times the resolution of the screen). Call
- # &qd'Scale(1,4) to fix this problem by shrinking the pen down to a quarter of its
- # (1,1) size.
- #
- # &qd'Scale(numerator,denominator) # Scale the pen by the fraction numerator/denominator
-
-
- # TEXT
- #
- # &qd'TextFont(fontCode) # Set the current font to indicated code. Currently
- # defined fonts are $qd'TIMES, $qd'NEWCENTURYSCHOOLBK,
- # $qd'SYMBOL, $qd'HELVETICA, and $qd'COURIER.
- #
- # &qd'TextSize(size) # Set the current font size (in points). 12 point is typical
- #
- # &qd'TextFace(attributes) # Set one or more font style attributes. Currently defined
- # are $qd'PLAIN, $qd'BOLD, $qd'ITALIC, $qd'UNDERLINE, and
- # can be used in combination:
- # &qd'TextFace($qd'BOLD + $qd'ITALIC);
- #
- # &qd'DrawString(string) # Draw the indicated text. It will be drawn from the
- # current pen location. Word wrap is NOT supported.
- # Rotated text is NOT supported.
- #
- # &qd'TextWidth(string) # This will return an approximate width for the string
- # when it is printed in the current size, font and face.
- # Unfortunately, since perl has no access to the Macintosh
- # font description tables, the number returned by this
- # routine will be wildly inaccurate at best.
- # However, if you have X11R5 bdf fonts installed, we look
- # in the directory $qd'X11FONTS in order to find a bdf metrics
- # font to use. This will give you extremely accurate measurements.
- # Please set this variable to whatever is correct for your local
- # system. To add more fonts, put them in your bdf font directory
- # and update the %qd'font_metric_files array at the bottom of this
- # file. It maps a key consisting of the Quickdraw font number,
- # font size, and font style (0 for plain, 1 for italic, 2 for bold,
- # 3 for both) to the appropriate bdf file.
-
- # RECTANGLES
- #
- # Draw rectangles using the routines:
- # &qd'FrameRect($myRect); # Draw wire-frame rectangle
- # &qd'PaintRect($myRect); # Fill rectangle with current foreground
- # color and pattern
- # &qd'EraseRect($myRect); # Erase the rectangle (fill with bg color)
- # &qd'InvertRect($myRect); # Invert black and white in rectangle
-
-
- # OVALS
- #
- # Draw ovals using the routines:
- # &qd'FrameOval($myRect); # Draw wire-frame oval
- # &qd'PaintOval($myRect); # Fill oval with current foreground
- # color and pattern
- # &qd'EraseOval($myRect); # Erase the oval (fill with bg color)
- # &qd'InvertOval($myRect); # Invert black and white in oval
- # &qd'FillOval($myRect,$pat); # Fill with specified pattern
- #
-
- # ROUND RECTANGLES
- #
- # Draw round-cornered rectangles with these routines. They each take an oval radius
- # to determine the amount of curvature. Values of 10-20 are typical.
- # &qd'FrameRoundRect($myRect,$ovalWidth,$ovalHeight); # wire-frame outline
- # &qd'PaintRoundRect($myRect,$ovalWidth,$ovalHeight); # fill with current foreground
- # &qd'EraseRoundRect($myRect,$ovalWidth,$ovalHeight); # erase
- # &qd'InvertRoundRect($myRect,$ovalWidth,$ovalHeight);# invert
- # &qd'FillRoundRect($myRect,$ovalWidth,$ovalHeight,$pat); # fill with specified pattern
-
- # ARCS
- # Draw an arc subtending the specified rectangle. Angles are in degrees and
- # start pointing northward and get larger clockwise:
- # e.g. PaintArc($r,45,90) gives you a pie wedge from 2 o'clock to 5 o'clock
- # &qd'FrameArc($rect,$startAngle,$arcAngle); # wire-frame the arc
- # &qd'PaintArc($rect,$startAngle,$arcAngle); # fill with current foreground
- # &qd'EraseArc($rect,$startAngle,$arcAngle); # erase arc
- # &qd'InvertArc($rect,$startAngle,$arcAngle); # flip white and black
- # &qd'FillArc($rect,,$startAngle,$arcAngle,$pat); # fill with specified pattern
-
- # POLYGONS
- # Calling OpenPoly returns the name of a variable in which a growing
- # polygon structure will be stored. Once a polygon is opened, all drawing
- # commands cease to have an effect on the picture. Instead, all MoveTo,
- # LineTo and Line commands accumulate polygon vertices into the data structure.
- # Call ClosePoly to stop recording drawing commands. The polygon can now
- # be moved, scaled, drawn, filled and erased as many times as wished. Call
- # KillPoly to release the memory taken up by the polygon
- # $polygon = &qd'OpenPoly; # begin recording drawing commands
- # &qd'ClosePoly($polygon); # stop recording drawing commands
- # &qd'FramePoly($polygon); # wire-frame the polygon
- # &qd'PaintPoly($polygon); # fill with current foreground
- # &qd'ErasePoly($polygon); # erase polygon
- # &qd'FillPoly($polygon,$pat); # fill polygon with pattern
- # &qd'OffsetPoly($polygon,$dh,$dv); # translate poly by dh horizontally, dv vertically
- # &qd'MapPoly($polygon,$srcRect,$destRect); # map polygon from coordinate system defined by
- # source rectangle to that defined by destination
- # rectangle (moving or resizing it as needed)
-
- # PRINTING OUT THE PICTURE IN A FORM THAT THE MACINTOSH CAN READ
- #
- # The Mac expects its picture files to begin with 512 bytes of "application specific"
- # data. By default the picture data that you get will be proceeded by 512 bytes of
- # 0's. If you want something else, or if you just want the picture data, set the
- # package variable $qd'PICTHEADER to whatever you desire before calling ClosePicture.
- # In order for the picture data to be readable on the Macintosh, the file type must
- # be set to 'PICT'. A number of UNIX utilities, including mcvert and BinHex allow
- # you to do this. Or you can use the picttoppm utility (part of the netppm suite of
- # graphics tools) to translate the file into any format you desire.
-
- # A WORKING EXAMPLE
- # require "qd.pl";
- # &qd'SetRect(*myRect,0,0,500,500); # Define a 500 pixel square
- # &qd'OpenPicture($myRect); # Begin defining the picture
- # &qd'ClipRect($myRect); # Always a good idea
- # &qd'MoveTo(5,5); # Move the pen to a starting point
- # &qd'LineTo(400,400); # A diagonal line
- # &qd'TextFont($qd'COURIER); # Set the font
- # &qd'MoveTo(50,20); # Move the pen to a new starting point
- # &qd'DrawString("Hello there!"); # Friendly greeting
- # &qd'SetRect(*myRect,80,80,250,250); # New rectangle
- # &qd'RGBForeColor(0x0000,0x0000,0xFFFF); # Set the color to blue
- # &qd'PaintRect($myRect); # Fill rectangle with that color
- # $data = &qd'ClosePicture; # Close picture and retrieve data
-
- # # Pipe through binhex, setting the creator type to JVWR for JPEG Viewer
- # # Note: BinHex is available at <ftp://genome.wi.mit.edu/software/util/BinHex>
- # open (BINHEX "| BinHex -t PICT -c JVWR -n 'An Example'");
- # print BINHEX $data;
- # close BINHEX;
-
- # # Turn it into a GIF file, using the ppm utilities
- # open (GIF, "| picttoppm | ppmtogif -transparent white");
- # print GIF $data;
- # close GIF;
-
-
- # MISCELLANEOUS NOTES
- # NOTE: For some reason the various FILL routines don't work as
- # advertised. They are simulated by a PnPat followed by a paint
-
- # --------------------------------------------------------------------
- # Quickdraw-like functions -- now using PICT2
- # --------------------------------------------------------------------
- {
- package qd;
-
- # Directory to look in to find font metric definitions -- change this
- # for your installation
- $X11FONTS = '/usr/local/X11R5/X11/fonts/bdf';
-
- # Apple quickdraw constants
- $TIMES = 20;
- $HELVETICA = 21;
- $COURIER = 22;
- $SYMBOL = 23;
- $NEWCENTURYSCHOOLBK = 34;
-
- $PLAIN = 0;
- $BOLD = 1;
- $ITALIC = 2;
- $UNDERLINE = 4;
-
- # Some minimal patterns -- define your own if you like
- $GRAY = pack ('n4',0xAA55,0xAA55,0xAA55,0xAA55);
- $DKGRAY = pack ('n4',0xDD77,0xDD77,0xDD77,0xDD77);
- $LTGRAY = pack ('n4',0x8822,0x8822,0x8822,0x8822);
- $WHITE = pack('n4',0x0000,0x0000,0x0000,0x0000);
- $BLACK = pack ('n4',0xFFFF,0xFFFF,0xFFFF,0xFFFF);
-
- # absolute colors to be used with FgColor/BgColor
- # (for better control, use RGBFgColor/RGBBgColor)
- $BLACKCOLOR = 33;
- $WHITECOLOR = 30;
- $REDCOLOR = 209;
- $GREENCOLOR = 329;
- $BLUECOLOR = 389;
- $CYANCOLOR = 269;
- $MAGENTACOLOR = 149;
- $YELLOWCOLOR = 89;
-
- # This defines the header used at the beginning of PICT files:
- $PICTHEADER = "\0" x 512;
-
- # These are phoney font metrics which we use when no font metrics files are
- # around to help us out.
- $fudgefactor = 0.55;
- $ITALICEXTRA = 0.05;
- $BOLDEXTRA = 0.08;
-
- # Initial starting values
- $textFont = $HELVETICA;
- $textSize = 12;
- $textFace = $PLAIN;
- $rgbfgcolor = pack('n*',0xFFFF,0xFFFF,0xFFFF);
- $rgbbgcolor = pack('n*',0,0,0);
- $fgcolor = $BLACKCOLOR;
- $bgcolor = $WHITECOLOR;
- $polySave = undef;
-
- $_PnPattern = $BLACK;
- $_polyName = "polygon000";
-
- sub OpenPicture { # begin a picture
- local($rect) = @_;
- $currH = $currV = 0; # current pen position
- $pict = $PICTHEADER; # the header
- $pict .= pack('n',0); # size int (placeholder)
- $pict .= $rect; # pict frame
- $pict .= pack('n',0x0011); # Type 2 picture
- $pict .= pack('n',0x02FF); # version number
- $pict .= pack('nC24',0x0C00,0); # reserved header opcode + 24 bytes of reserved data
- # initialize the font and size
- &TextFont($textFont);
- &TextSize($textSize);
- &TextFace($textFace);
- }
-
- sub ClosePicture { # close pict and return it
- $pict .= pack ('n',0x00FF); # end of pict code
- substr($pict,512,2) = pack('n',length($pict) - 512); # fill in length
- return $pict;
- }
-
- sub ClipRect {
- local($rect) = @_;
- $pict .= pack('nn',0x0001,0x0A) . $rect;
- }
-
- sub PenPat {
- local($newpat) = @_;
- return unless $newpat ne $_PnPattern;
- $_PnPattern = $newpat;
- $pict .= pack('n',0x0009) . $_PnPattern;
- }
-
- sub RGBForeColor {
- local($rgb) = pack('n3',@_);
- return unless $rgb ne $rgbfgcolor;
- $rgbfgcolor = $rgb;
- $pict .= pack('n',0x001A) . $rgbfgcolor;
- }
-
- sub RGBBackColor {
- local($rgb) = pack('n3',@_);
- return unless $rgb ne $rgbbgcolor;
- $rgbbgcolor = $rgb;
- $pict .= pack('n',0x001B) . $rgbbgcolor;
- }
-
- sub FgColor {
- local($color) = @_;
- return unless $color != $fgcolor;
- $fgcolor = $color;
- $pict .= pack('nL',0x000E,$color);
- }
-
- sub BgColor {
- local($color) = @_;
- return unless $color != $bgcolor;
- $bgcolor = $color;
- $pict .= pack('nL',0x000F,$color);
- }
-
- sub TextFont {
- local($font) = @_;
- $textFont = $font;
- $pict .= pack('nn',0x0003,$font);
- }
-
- sub TextSize {
- local($size) = @_;
- $textSize = $size;
- $pict .= pack('nn',0x000D,$size);
- }
-
- sub PenSize {
- local($h,$v) = @_;
- $pict .= pack('nnn',0x0007,$v,$h);
- }
-
- sub TextFace {
- return if $textFace == @_[0];
- $textFace = @_[0];
- $pict .= pack ('nCC',0x0004,$textFace,0); # (zero added to pad to word)
- }
-
- sub DrawString {
- local($text) = @_;
- $text .= "\0" x ((length($text) + 1) % 2); # pad text to an odd length
- $pict .= pack('nnnC',0x0028,$currV,$currH,length($text)) . $text;
- }
-
- # RECTANGLE MANIPULATION ROUTINES. Note that
- # the rectangles are passed by NAME rather than by value,
- # in accordance with the MacOS way of doing things.
- sub SetRect {
- local(*r,$h1,$v1,$h2,$v2) = @_;
- $r = pack ('n4',$v1,$h1,$v2,$h2);
- }
-
- sub OffsetRect {
- local(*r,$x,$y) = @_;
- local($v1,$h1,$v2,$h2) = unpack('n4',$r);
- $h1 += $x; $h2 += $x;
- $v1 += $y; $v2 += $y;
- $r = pack ('n4',$v1,$h1,$v2,$h2);
- }
-
- sub InsetRect {
- local(*r,$x,$y) = @_;
- local($v1,$h1,$v2,$h2) = unpack('n4',$r);
- $h1 -= int($x/2); $h2 -= int($x/2);
- $v1 -= int($y/2); $v2 -= int($y/2);
- $r = pack ('n4',$v1,$h1,$v2,$h2);
- }
-
- # A few utility routine to translate between perl
- # arrays and rectangles.
-
- # four-element perl array to quickdraw rect structure
- sub a2r {
- local($top,$left,$bottom,$right) = @_;
- return pack('n4',$top,$left,$bottom,$right);
- }
-
- # rectangle to four-element perl array
- sub r2a {
- local($rect) = @_;
- return unpack('n4',$rect);
- }
-
- # associative array in which the keys are 'top','left','bottom','right'
- # to quickdraw rect structure
- sub aa2r {
- local(%r) = @_;
- return pack('n4',$r{'top'},$r{'left'},$r{'bottom'},$r{'right'});
- }
-
- # quickdraw rect structure to associative array
- sub r2aa {
- local($r) = @_;
- local(%r);
- ($r{'top'},$r{'left'},$r{'bottom'},$r{'right'}) = unpack('n4',$r);
- return %r;
- }
-
- # LINE DRAWING ROUTINES
- sub MoveTo {
- ($currH,$currV) = @_;
- }
-
- sub Move {
- local($dh,$dv) = @_;
- $currH += $dh;
- $currV += $dv;
- }
-
- sub LineTo {
- local($h,$v) = @_;
- # Special handling for polygons
- if (defined(@polySave)) {
- &_addVertex(*polySave,$h,$v)
- } else {
- $pict .= pack('nn4',0x0020,$currV,$currH,$v,$h);
- }
- ($currH,$currV) = ($h,$v);
- }
-
- sub Line {
- local($dh,$dv) = @_;
- # Special handling for polygons
- if (defined(@polySave)) {
- &_addVertex(*polySave,$h,$v);
- } else {
- $pict .= pack('nn4',0x0020,$currV,$currH,$currV+$dv,$currH+$dh);
- }
- ($currH,$currV) = ($currH+$dh,$currV+$dv);
- }
-
- sub Scale { #use picComment to set laserwriter line scaling
- local($numerator,$denominator)= @_;
- $pict .= pack('nnnn2',0x00A1,182,4,$numerator,$denominator);
- }
-
-
- # Rectangles
- sub FrameRect {
- local($rect) = @_;
- $pict .= pack('n',0x0030) . $rect;
- }
-
- sub PaintRect {
- local($rect) = @_;
- $pict .= pack('n',0x0031) . $rect;
- }
-
- sub EraseRect {
- local($rect) = @_;
- $pict .= pack('n',0x0032) . $rect;
- }
-
- sub InvertRect {
- local($rect) = @_;
- $pict .= pack('n',0x0033) . $rect;
- }
-
- sub FillRect {
- local($rect,$pattern) = @_;
- local($oldpat) = $_PnPattern;
- &PenPat($pattern);
- &PaintRect($rect);
- &PenPat($oldpat);
- }
-
- # Ovals
- sub FrameOval {
- local($rect) = @_;
- $pict .= pack('n',0x0050) . $rect;
- }
-
- sub PaintOval {
- local($rect) = @_;
- $pict .= pack('n',0x0051) . $rect;
- }
-
- sub EraseOval {
- local($rect) = @_;
- $pict .= pack('n',0x0052) . $rect;
- }
-
- sub InvertOval {
- local($rect) = @_;
- $pict .= pack('n',0x0053) . $rect;
- }
-
- sub FillOval {
- local($rect,$pattern) = @_;
- local($oldpat) = $_PnPattern;
- &PenPat($pattern);
- &PaintOval($rect);
- &PenPat($oldpat);
- }
-
- # Arcs
- sub FrameArc {
- local($rect,$startAngle,$arcAngle) = @_;
- $pict .= pack('n',0x0060) . $rect;
- $pict .= pack('nn',$startAngle,$arcAngle);
- }
-
- sub PaintArc {
- local($rect,$startAngle,$arcAngle) = @_;
- $pict .= pack('n',0x0061) . $rect;
- $pict .= pack('nn',$startAngle,$arcAngle);
- }
-
- sub EraseArc {
- local($rect,$startAngle,$arcAngle) = @_;
- $pict .= pack('n',0x0062) . $rect;
- $pict .= pack('nn',$startAngle,$arcAngle);
- }
-
- sub InvertArc {
- local($rect,$startAngle,$arcAngle) = @_;
- $pict .= pack('n',0x0063) . $rect;
- $pict .= pack('nn',$startAngle,$arcAngle);
- }
-
- sub FillArc {
- local($rect,$startAngle,$arcAngle,$pattern) = @_;
- local($oldpat) = $_PnPattern;
- &PenPat($pattern);
- &PaintArc($rect,$startAngle,$arcAngle);
- &PenPat($oldpat);
- }
-
- # Round rects
- sub FrameRoundRect {
- local($rect,$ovalWidth,$ovalHeight) = @_;
- unless ($_roundRectCurvature eq "$ovalWidth $ovalHeight") {
- $pict .= pack('nn2',0x000B,$ovalHeight,$ovalWidth);
- $_roundRectCurvature = "$ovalWidth $ovalHeight";
- }
- $pict .= pack('n',0x0040) . $rect;
- }
-
- sub PaintRoundRect {
- local($rect,$ovalWidth,$ovalHeight) = @_;
- unless ($_roundRectCurvature eq "$ovalWidth $ovalHeight") {
- $pict .= pack('nn2',0x000B,$ovalHeight,$ovalWidth);
- $_roundRectCurvature = "$ovalWidth $ovalHeight";
- }
- $pict .= pack('n',0x0041) . $rect;
- }
-
- sub EraseRoundRect {
- local($rect,$ovalWidth,$ovalHeight) = @_;
- unless ($_roundRectCurvature eq "$ovalWidth $ovalHeight") {
- $pict .= pack('nn2',0x000B,$ovalHeight,$ovalWidth);
- $_roundRectCurvature = "$ovalWidth $ovalHeight";
- }
- $pict .= pack('n',0x0042) . $rect;
- }
-
- sub InvertRoundRect {
- local($rect,$ovalWidth,$ovalHeight) = @_;
- unless ($_roundRectCurvature eq "$ovalWidth $ovalHeight") {
- $pict .= pack('nn2',0x000B,$ovalHeight,$ovalWidth);
- $_roundRectCurvature = "$ovalWidth $ovalHeight";
- }
- $pict .= pack('n',0x0043) . $rect;
- }
-
- sub FillRoundRect {
- local($rect,$ovalWidth,$ovalHeight,$pattern) = @_;
- local($oldpat) = $_PnPattern;
- &PenPat($pattern);
- &PaintRoundRect($rect,$ovalWidth,$ovalHeight);
- &PenPat($oldpat);
- }
-
- # Polygons -- you are only allowed to create one polygon at a time.
- # You will be returned a "handle" which contains the growing polygon
- # structure. The "handle" is actually the NAME of the scalar
- sub OpenPoly {
- $_polyName++;
- undef $polySave; # close one if it was already defined
- *polySave = $_polyName;
- @polySave = (10,0,0,0,0); # initialize it to empty size and rectangle
- return $_polyName;
- }
-
- sub ClosePoly {
- *polySave = 'scratch';
- undef @polySave;
- }
-
- # Kill the poly -- really a no-op in perl
- sub KillPoly {
- local(*poly) = @_;
- undef @poly;
- }
-
- # Polygon drawing
- sub FramePoly {
- local(*poly) = @_;
- return unless @poly;
- $pict .= pack('n*',0x0070,@poly);
- }
-
- sub PaintPoly {
- local(*poly) = @_;
- return unless @poly;
- $pict .= pack('n*',0x0071,@poly);
- }
-
- sub ErasePoly {
- local(*poly) = @_;
- return unless @poly;
- $pict .= pack('n*',0x0072,@poly);
- }
-
- sub InvertPoly {
- local(*poly) = @_;
- return unless @poly;
- $pict .= pack('n*',0x0073,@poly);
- }
-
- sub FillPoly {
- local(*poly,$pattern) = @_;
- return unless @poly;
- local($oldpat) = $_PnPattern;
- &PenPat($pattern);
- &PaintPoly(*poly);
- &PenPat($oldpat);
- }
-
- sub OffsetPoly {
- local(*poly,$dh,$dv) = @_;
- return unless @poly;
- local($size,@vertices) = @poly;
- local($i);
- for ($i=0;$i<@vertices;$i+=2) {
- $vertices[$i] += $dv;
- $vertices[$i+1] += $dh;
- }
- @poly = ($size,@vertices);
- }
-
- sub MapPoly {
- local(*poly,$srcRect,$destRect) = @_;
- return unless @poly;
- local($size,@vertices) = @poly;
- local(@src) = unpack('n4',$srcRect);
- local(@dest) = unpack('n4',$destRect);
- local($factorV) = ($dest[2]-$dest[0])/($src[2]-$src[0]);
- local($factorH) = ($dest[3]-$dest[1])/($src[3]-$src[1]);
- for ($i=0;$i<@vertices;$i+=2) {
- $vertices[$i] = int($dest[0] + ($vertices[$i] - $src[0]) * $factorV);
- $vertices[$i+1] = int($dest[1] + ($vertices[$i+1] - $src[1]) * $factorH);
- }
- @poly = ($size,@vertices);
- }
-
- # A utility routine to add a vertex to the growing polygon structure
- # We need to grow both the size of the polygon and increase the bounding
- # rectangle. A special case occurs when we add the first vertex:
- # we store both the current position
- sub _addVertex {
- local(*polygon,$h,$v) = @_;
- local($size,$top,$left,$bottom,$right,@vertices) = @polygon;
- # Special case for empty vertices -- add the current point
- unless (@vertices) {
- push(@vertices,$currV,$currH);
- $size += 4;
- $top = $bottom = $currV;
- $left = $right = $currH;
- }
-
- # IM V1 implies that all vertices are stored relative to
- # the first point -- I don't know if this is really the case
- push (@vertices,$v,$h);
-
- $size += 4;
- $top = $v if $v < $top;
- $bottom = $v if $v > $bottom;
- $left = $h if $h < $left;
- $right = $h if $h > $right;
- @polygon=($size,$top,$left,$bottom,$right,@vertices);
- }
-
- # We try to get the metrics from an X11 bdf font file, if possible.
- sub TextWidth {
- local($text) = @_;
-
- # See if we can derive the character widths from a metrics file
- local($face) = 0xFB & $textFace; # underlining don't count
- local($metric_name) = &_getFontMetrics($textFont,$textSize,$face);
- if ($metric_name && (*metrics = $metric_name) && defined(%metrics)) {
- local($length);
- foreach (split('',$text)) {
- $length += $metrics{ord($_)};
- }
- return $length;
- } else { # we get here if we don't have any metrics - make it up
- local($extra);
- $extra += $ITALICEXTRA if vec($textFace,$ITALIC,1);
- $extra += $BOLDEXTRA if vec($textFace,$BOLD,1);
- return length($text) * $textSize * ($fudgefactor+$extra);
- }
- }
-
- # Utility routine to read text widths out of bdf files. We create a metrics
- # array on the fly. The names of the metrics files are stored in an array
- # called _metricsArrays. We return the name of the array, or undef if inapplicable.
- sub _getFontMetrics {
- local($font,$size,$face) = @_;
- local($key) = "$font $size $face";
- return $_metricsArrays{$key} if $_metricsArrays{$key};
-
- # If we get here, we don't have a metrics array to return. See if we can
- # construct one from a bdf file.
-
- # Don't bother unless this font is defined.
- return undef unless $font_metric_files{$key};
-
- # Don't bother if we tried before and failed
- return undef if $_failed_metric{$key};
-
- # Try to open up the bdf file. Remember if we fail
- unless (open(BDF,"$font_metric_files{$key}")) {
- $_failed_metric_files{$key}++;
- return undef;
- }
-
- # Wow! We're golden. Create a new metrics array
- $next_metric++; # bump up the name
- local(*metrics) = $next_metric; local($char);
- while (<BDF>) {
- next unless /^STARTCHAR/../^ENDCHAR/;
- if (/^ENCODING\s+(\d+)/) { $char = $1; }
- elsif (/^DWIDTH\s+(\d+)/) { $metrics{$char}=$1; }
- }
- close(BDF);
-
- # Remember the name of the metrics array and return it
- return $_metricsArrays{$key} = $next_metric;
- }
-
- # Ugly stuff that I want to hide at the bottom
-
- # For the purposes of mapping from quickdraw fonts to X11fonts, we define
- # the following dictionary:
- %font_metric_files = (
- "22 8 1","$X11FONTS/courB08.bdf",
- "22 10 1","$X11FONTS/courB10.bdf",
- "22 12 1","$X11FONTS/courB12.bdf",
- "22 14 1","$X11FONTS/courB14.bdf",
- "22 18 1","$X11FONTS/courB18.bdf",
- "22 24 1","$X11FONTS/courB24.bdf",
- "22 8 2","$X11FONTS/courO08.bdf",
- "22 10 2","$X11FONTS/courO10.bdf",
- "22 12 2","$X11FONTS/courO12.bdf",
- "22 14 2","$X11FONTS/courO14.bdf",
- "22 18 2","$X11FONTS/courO18.bdf",
- "22 24 2","$X11FONTS/courO24.bdf",
- "22 8 0","$X11FONTS/courR08.bdf",
- "22 10 0","$X11FONTS/courR10.bdf",
- "22 12 0","$X11FONTS/courR12.bdf",
- "22 14 0","$X11FONTS/courR14.bdf",
- "22 18 0","$X11FONTS/courR18.bdf",
- "22 24 0","$X11FONTS/courR24.bdf",
- "21 8 1","$X11FONTS/helvB08.bdf",
- "21 10 1","$X11FONTS/helvB10.bdf",
- "21 12 1","$X11FONTS/helvB12.bdf",
- "21 14 1","$X11FONTS/helvB14.bdf",
- "21 18 1","$X11FONTS/helvB18.bdf",
- "21 24 1","$X11FONTS/helvB24.bdf",
- "21 8 2","$X11FONTS/helvO08.bdf",
- "21 10 2","$X11FONTS/helvO10.bdf",
- "21 12 2","$X11FONTS/helvO12.bdf",
- "21 14 2","$X11FONTS/helvO14.bdf",
- "21 18 2","$X11FONTS/helvO18.bdf",
- "21 24 2","$X11FONTS/helvO24.bdf",
- "21 8 0","$X11FONTS/helvR08.bdf",
- "21 10 0","$X11FONTS/helvR10.bdf",
- "21 12 0","$X11FONTS/helvR12.bdf",
- "21 14 0","$X11FONTS/helvR14.bdf",
- "21 18 0","$X11FONTS/helvR18.bdf",
- "21 24 0","$X11FONTS/helvR24.bdf",
- "20 8 1","$X11FONTS/timB08.bdf",
- "20 10 1","$X11FONTS/timB10.bdf",
- "20 12 1","$X11FONTS/timB12.bdf",
- "20 14 1","$X11FONTS/timB14.bdf",
- "20 18 1","$X11FONTS/timB18.bdf",
- "20 24 1","$X11FONTS/timB24.bdf",
- "20 8 3","$X11FONTS/timBI08.bdf",
- "20 10 3","$X11FONTS/timBI10.bdf",
- "20 12 3","$X11FONTS/timBI12.bdf",
- "20 14 3","$X11FONTS/timBI14.bdf",
- "20 18 3","$X11FONTS/timBI18.bdf",
- "20 24 3","$X11FONTS/timBI24.bdf",
- "20 8 2","$X11FONTS/timI08.bdf",
- "20 10 2","$X11FONTS/timI10.bdf",
- "20 12 2","$X11FONTS/timI12.bdf",
- "20 14 2","$X11FONTS/timI14.bdf",
- "20 18 2","$X11FONTS/timI18.bdf",
- "20 24 2","$X11FONTS/timI24.bdf",
- "20 8 0","$X11FONTS/timR08.bdf",
- "20 10 0","$X11FONTS/timR10.bdf",
- "20 12 0","$X11FONTS/timR12.bdf",
- "20 14 0","$X11FONTS/timR14.bdf",
- "20 18 0","$X11FONTS/timR18.bdf",
- "20 24 0","$X11FONTS/timR24.bdf",
- "34 8 1","$X11FONTS/ncenB08.bdf",
- "34 10 1","$X11FONTS/ncenB10.bdf",
- "34 12 1","$X11FONTS/ncenB12.bdf",
- "34 14 1","$X11FONTS/ncenB14.bdf",
- "34 18 1","$X11FONTS/ncenB18.bdf",
- "34 24 1","$X11FONTS/ncenB24.bdf",
- "34 8 3","$X11FONTS/ncenBI08.bdf",
- "34 10 3","$X11FONTS/ncenBI10.bdf",
- "34 12 3","$X11FONTS/ncenBI12.bdf",
- "34 14 3","$X11FONTS/ncenBI14.bdf",
- "34 18 3","$X11FONTS/ncenBI18.bdf",
- "34 24 3","$X11FONTS/ncenBI24.bdf",
- "34 8 2","$X11FONTS/ncenI08.bdf",
- "34 10 2","$X11FONTS/ncenI10.bdf",
- "34 12 2","$X11FONTS/ncenI12.bdf",
- "34 14 2","$X11FONTS/ncenI14.bdf",
- "34 18 2","$X11FONTS/ncenI18.bdf",
- "34 24 2","$X11FONTS/ncenI24.bdf",
- "34 8 0","$X11FONTS/ncenR08.bdf",
- "34 10 0","$X11FONTS/ncenR10.bdf",
- "34 12 0","$X11FONTS/ncenR12.bdf",
- "34 14 0","$X11FONTS/ncenR14.bdf",
- "34 18 0","$X11FONTS/ncenR18.bdf",
- "34 24 0","$X11FONTS/ncenR24.bdf"
- );
- $next_metric = "metrics0000"; # name of our metrics arrays - dynamically allocated
-
- 1;
- } #end of package qd
-
-