src/hid/common/extents.c

   1 #ifdef HAVE_CONFIG_H
   2 #include "config.h"
   3 #endif
   4
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <string.h>
   8 #include <math.h>
   9
  10 #include "global.h"
  11 #include "data.h"
  12
  13 #include "hid.h"
  14 #include "hid_draw.h"
  15 #include "../hidint.h"
  16 #include "hid/common/draw_helpers.h"
  17
  18 #ifdef HAVE_LIBDMALLOC
  19 #include <dmalloc.h>
  20 #endif
  21
  22 static BoxType box;
  23
  24 typedef struct extents_gc_struct
  25 {
  26   struct hid_gc_struct hid_gc; /* Parent */
  27
  28   int width;
  29 } *extentsGC;
  30
  31 static int
  32 extents_set_layer (const char *name, int group, int empty)
  33 {
  34   int idx = group;
  35   if (idx >= 0 && idx < max_group)
  36     {
  37       idx = PCB->LayerGroups.Entries[idx][0];
  38     }
  39   if (idx >= 0 && idx < max_copper_layer + EXTRA_LAYERS)
  40     return 1;
  41   if (idx < 0)
  42     {
  43       switch (SL_TYPE (idx))
  44         {
  45         case SL_INVISIBLE:
  46         case SL_MASK:
  47         case SL_ASSY:
  48           return 0;
  49         case SL_SILK:
  50         case SL_PDRILL:
  51         case SL_UDRILL:
  52           return 1;
  53         }
  54     }
  55   return 0;
  56 }
  57
  58 static hidGC
  59 extents_make_gc (void)
  60 {
  61   hidGC gc = (hidGC)calloc (1, sizeof (struct extents_gc_struct));
  62
  63   return gc;
  64 }
  65
  66 static void
  67 extents_destroy_gc (hidGC gc)
  68 {
  69   free (gc);
  70 }
  71
  72 static void
  73 extents_use_mask (enum mask_mode mode)
  74 {
  75 }
  76
  77 static void
  78 extents_set_color (hidGC gc, const char *name)
  79 {
  80 }
  81
  82 static void
  83 extents_set_line_cap (hidGC gc, EndCapStyle style)
  84 {
  85 }
  86
  87 static void
  88 extents_set_line_width (hidGC gc, Coord width)
  89 {
  90   extentsGC extents_gc = (extentsGC)gc;
  91
  92   extents_gc->width = width;
  93 }
  94
  95 static void
  96 extents_set_draw_xor (hidGC gc, int xor_)
  97 {
  98 }
  99
 100 #define PEX(x,w) if (box.X1 > (x)-(w)) box.X1 = (x)-(w); \
 101         if (box.X2 < (x)+(w)) box.X2 = (x)+(w)
 102 #define PEY(y,w) if (box.Y1 > (y)-(w)) box.Y1 = (y)-(w); \
 103         if (box.Y2 < (y)+(w)) box.Y2 = (y)+(w)
 104
 105 static void
 106 extents_draw_line (hidGC gc, Coord x1, Coord y1, Coord x2, Coord y2)
 107 {
 108   extentsGC extents_gc = (extentsGC)gc;
 109
 110   PEX (x1, extents_gc->width);
 111   PEY (y1, extents_gc->width);
 112   PEX (x2, extents_gc->width);
 113   PEY (y2, extents_gc->width);
 114 }
 115
 116 static void
 117 extents_draw_arc (hidGC gc, Coord cx, Coord cy, Coord width, Coord height,
 118                   Angle start_angle, Angle end_angle)
 119 {
 120   extentsGC extents_gc = (extentsGC)gc;
 121
 122   /* Naive but good enough.  */
 123   PEX (cx, width + extents_gc->width);
 124   PEY (cy, height + extents_gc->width);
 125 }
 126
 127 static void
 128 extents_draw_rect (hidGC gc, Coord x1, Coord y1, Coord x2, Coord y2)
 129 {
 130   extentsGC extents_gc = (extentsGC)gc;
 131
 132   PEX (x1, extents_gc->width);
 133   PEY (y1, extents_gc->width);
 134   PEX (x2, extents_gc->width);
 135   PEY (y2, extents_gc->width);
 136 }
 137
 138 static void
 139 extents_fill_circle (hidGC gc, Coord cx, Coord cy, Coord radius)
 140 {
 141   PEX (cx, radius);
 142   PEY (cy, radius);
 143 }
 144
 145 static void
 146 extents_fill_polygon (hidGC gc, int n_coords, Coord *x, Coord *y)
 147 {
 148   int i;
 149   for (i = 0; i < n_coords; i++)
 150     {
 151       PEX (x[i], 0);
 152       PEY (y[i], 0);
 153     }
 154 }
 155
 156 static void
 157 extents_fill_rect (hidGC gc, Coord x1, Coord y1, Coord x2, Coord y2)
 158 {
 159   PEX (x1, 0);
 160   PEY (y1, 0);
 161   PEX (x2, 0);
 162   PEY (y2, 0);
 163 }
 164
 165 static HID extents_hid;
 166 static HID_DRAW extents_graphics;
 167 static HID_DRAW_CLASS extents_graphics_class;
 168
 169 void
 170 hid_extents_init (void)
 171 {
 172   static bool initialised = false;
 173
 174   if (initialised)
 175     return;
 176
 177   memset (&extents_hid, 0, sizeof (HID));
 178   memset (&extents_graphics, 0, sizeof (HID_DRAW));
 179   memset (&extents_graphics_class, 0, sizeof (HID_DRAW_CLASS));
 180
 181   extents_hid.struct_size         = sizeof (HID);
 182   extents_hid.name                = "extents-extents";
 183   extents_hid.description         = "used to calculate extents";
 184
 185   common_draw_helpers_class_init (&extents_graphics_class);
 186
 187   extents_graphics_class.set_layer      = extents_set_layer;
 188   extents_graphics_class.make_gc        = extents_make_gc;
 189   extents_graphics_class.destroy_gc     = extents_destroy_gc;
 190   extents_graphics_class.use_mask       = extents_use_mask;
 191   extents_graphics_class.set_color      = extents_set_color;
 192   extents_graphics_class.set_line_cap   = extents_set_line_cap;
 193   extents_graphics_class.set_line_width = extents_set_line_width;
 194   extents_graphics_class.set_draw_xor   = extents_set_draw_xor;
 195   extents_graphics_class.draw_line      = extents_draw_line;
 196   extents_graphics_class.draw_arc       = extents_draw_arc;
 197   extents_graphics_class.draw_rect      = extents_draw_rect;
 198   extents_graphics_class.fill_circle    = extents_fill_circle;
 199   extents_graphics_class.fill_polygon   = extents_fill_polygon;
 200   extents_graphics_class.fill_rect      = extents_fill_rect;
 201
 202   extents_graphics.klass = &extents_graphics_class;
 203   extents_graphics.poly_before = true;
 204   common_draw_helpers_init (&extents_graphics);
 205
 206   initialised = true;
 207 }
 208
 209
 210 BoxType *
 211 hid_get_extents (void *item)
 212 {
 213   BoxType region;
 214
 215   /* As this isn't a real "HID", we need to ensure we are initialised. */
 216   hid_extents_init ();
 217
 218   box.X1 = COORD_MAX;
 219   box.Y1 = COORD_MAX;
 220   box.X2 = -COORD_MAX - 1;
 221   box.Y2 = -COORD_MAX - 1;
 222
 223   region.X1 = -COORD_MAX - 1;
 224   region.Y1 = -COORD_MAX - 1;
 225   region.X2 = COORD_MAX;
 226   region.Y2 = COORD_MAX;
 227   hid_expose_callback (&extents_graphics, &region, item);
 228
 229   return &box;
 230 }