summaryrefslogtreecommitdiff
blob: 187f7d06f048d9795bdcdaead4a1ba0f7deb9244 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
/* Copyright (C) 2001-2019 Artifex Software, Inc.
   All Rights Reserved.

   This software is provided AS-IS with no warranty, either express or
   implied.

   This software is distributed under license and may not be copied,
   modified or distributed except as expressly authorized under the terms
   of the license contained in the file LICENSE in this distribution.

   Refer to licensing information at http://www.artifex.com or contact
   Artifex Software, Inc.,  1305 Grant Avenue - Suite 200, Novato,
   CA 94945, U.S.A., +1(415)492-9861, for further information.
*/


/* Mask clipping for patterns */
#include "memory_.h"
#include "gx.h"
#include "gpcheck.h"
#include "gserrors.h"
#include "gsstruct.h"
#include "gxdevice.h"
#include "gxdevmem.h"
#include "gxclip2.h"
#include "gxdcolor.h"
#include "gdevmpla.h"

private_st_device_tile_clip();

/* Device procedures */
static dev_proc_fill_rectangle(tile_clip_fill_rectangle);
static dev_proc_fill_rectangle_hl_color(tile_clip_fill_rectangle_hl_color);
static dev_proc_copy_mono(tile_clip_copy_mono);
static dev_proc_copy_color(tile_clip_copy_color);
static dev_proc_copy_planes(tile_clip_copy_planes);
static dev_proc_copy_alpha(tile_clip_copy_alpha);
static dev_proc_copy_alpha_hl_color(tile_clip_copy_alpha_hl_color);
static dev_proc_strip_copy_rop(tile_clip_strip_copy_rop);
static dev_proc_strip_copy_rop2(tile_clip_strip_copy_rop2);

/* The device descriptor. */
static const gx_device_tile_clip gs_tile_clip_device =
{std_device_std_body_open(gx_device_tile_clip, 0, "tile clipper",
                          0, 0, 1, 1),
 {gx_default_open_device,
  gx_forward_get_initial_matrix,
  gx_default_sync_output,
  gx_default_output_page,
  gx_default_close_device,
  gx_forward_map_rgb_color,
  gx_forward_map_color_rgb,
  tile_clip_fill_rectangle,
  gx_default_tile_rectangle,
  tile_clip_copy_mono,
  tile_clip_copy_color,
  gx_default_draw_line,
  gx_forward_get_bits,
  gx_forward_get_params,
  gx_forward_put_params,
  gx_forward_map_cmyk_color,
  gx_forward_get_xfont_procs,
  gx_forward_get_xfont_device,
  gx_forward_map_rgb_alpha_color,
  gx_forward_get_page_device,
  gx_forward_get_alpha_bits,
  tile_clip_copy_alpha,
  gx_forward_get_band,
  gx_default_copy_rop,
  gx_default_fill_path,
  gx_default_stroke_path,
  gx_default_fill_mask,
  gx_default_fill_trapezoid,
  gx_default_fill_parallelogram,
  gx_default_fill_triangle,
  gx_default_draw_thin_line,
  gx_default_begin_image,
  gx_default_image_data,
  gx_default_end_image,
  gx_default_strip_tile_rectangle,
  tile_clip_strip_copy_rop,
  gx_forward_get_clipping_box,
  gx_default_begin_typed_image,
  gx_forward_get_bits_rectangle,
  gx_forward_map_color_rgb_alpha,
  gx_no_create_compositor,
  gx_forward_get_hardware_params,
  gx_default_text_begin,
  gx_default_finish_copydevice,
  NULL,			/* begin_transparency_group */
  NULL,			/* end_transparency_group */
  NULL,			/* begin_transparency_mask */
  NULL,			/* end_transparency_mask */
  NULL,			/* discard_transparency_layer */
  gx_forward_get_color_mapping_procs,
  gx_forward_get_color_comp_index,
  gx_forward_encode_color,
  gx_forward_decode_color,
  NULL,                 /* pattern_manage */
  tile_clip_fill_rectangle_hl_color,
  gx_forward_include_color_space,
  gx_forward_fill_linear_color_scanline,
  gx_forward_fill_linear_color_trapezoid,
  gx_forward_fill_linear_color_triangle,
  gx_forward_update_spot_equivalent_colors,
  gx_forward_ret_devn_params,
  gx_forward_fillpage,
  NULL,                      /* push_transparency_state */
  NULL,                      /* pop_transparency_state */
  NULL,                      /* put_image */
  gx_forward_dev_spec_op,
  tile_clip_copy_planes,
  NULL,                      /* get_profile */
  NULL,                      /* set_graphics_type_tag */
  tile_clip_strip_copy_rop2,
  gx_default_strip_tile_rect_devn,
  tile_clip_copy_alpha_hl_color
 }
};

/* Initialize a tile clipping device from a mask. */
int
tile_clip_initialize(gx_device_tile_clip * cdev, const gx_strip_bitmap * tiles,
                     gx_device * tdev, int px, int py)
{
    int code =
    gx_mask_clip_initialize(cdev, &gs_tile_clip_device,
                            (const gx_bitmap *)tiles,
                            tdev, 0, 0, NULL);	/* phase will be reset */

    if (code >= 0) {
        cdev->tiles = *tiles;
        tile_clip_set_phase(cdev, px, py);
    }
    return code;
}

void
tile_clip_free(gx_device_tile_clip *cdev)
{
    /* release the target reference */
    if(cdev->finalize)
        cdev->finalize((gx_device *)cdev);  /* this also sets the target to NULL */
    gs_free_object(cdev->memory, cdev, "tile_clip_free(cdev)");
}

/* Set the phase of the tile. */
void
tile_clip_set_phase(gx_device_tile_clip * cdev, int px, int py)
{
    cdev->phase.x = px;
    cdev->phase.y = py;
}

/* Fill a rectangle with high level devn color by tiling with the mask. */
static int
tile_clip_fill_rectangle_hl_color(gx_device *dev, const gs_fixed_rect *rect,
                const gs_gstate *pgs, const gx_drawing_color *pdcolor, 
                const gx_clip_path *pcpath)
{
    gx_device_tile_clip *cdev = (gx_device_tile_clip *) dev;
    gx_device *tdev = cdev->target;
    int x, y, w, h;
    gx_device_color dcolor0, dcolor1;
    int k;

    /* Have to pack the no color index into the pure device type */
    dcolor0.type = gx_dc_type_pure;
    dcolor0.colors.pure = gx_no_color_index;
    /* Have to set the dcolor1 to a non mask type */
    dcolor1.type = gx_dc_type_devn;
    for (k = 0; k < GS_CLIENT_COLOR_MAX_COMPONENTS; k++) {
        dcolor1.colors.devn.values[k] = pdcolor->colors.devn.values[k];
    }
    x = fixed2int(rect->p.x);
    y = fixed2int(rect->p.y);
    w = fixed2int(rect->q.x) - x;
    h = fixed2int(rect->q.y) - y;
    return (*dev_proc(tdev, strip_tile_rect_devn))(tdev, &cdev->tiles,
                                                    x, y, w, h, &dcolor0, &dcolor1, 
                                                    cdev->phase.x, cdev->phase.y);
}

/* Fill a rectangle by tiling with the mask. */
static int
tile_clip_fill_rectangle(gx_device * dev, int x, int y, int w, int h,
                         gx_color_index color)
{
    gx_device_tile_clip *cdev = (gx_device_tile_clip *) dev;
    gx_device *tdev = cdev->target;

    return (*dev_proc(tdev, strip_tile_rectangle)) (tdev, &cdev->tiles,
                                                    x, y, w, h,
                    gx_no_color_index, color, cdev->phase.x, cdev->phase.y);
}

/* Calculate the X offset corresponding to a given Y, taking the phase */
/* and shift into account. */
#define x_offset(ty, cdev)\
  ((cdev)->phase.x + (((ty) + (cdev)->phase.y) / (cdev)->tiles.rep_height) *\
   (cdev)->tiles.rep_shift)

/* Copy a monochrome bitmap.  We divide it up into maximal chunks */
/* that line up with a single tile, and then do the obvious Boolean */
/* combination of the tile mask and the source. */
static int
tile_clip_copy_mono(gx_device * dev,
                const byte * data, int sourcex, int raster, gx_bitmap_id id,
                    int x, int y, int w, int h,
                    gx_color_index color0, gx_color_index color1)
{
    gx_device_tile_clip *cdev = (gx_device_tile_clip *) dev;
    gx_color_index color, mcolor0, mcolor1;
    int ty, ny;
    int code;

    setup_mask_copy_mono(cdev, color, mcolor0, mcolor1);
    for (ty = y; ty < y + h; ty += ny) {
        int tx, nx;
        int cy = (ty + cdev->phase.y) % cdev->tiles.rep_height;
        int xoff = x_offset(ty, cdev);

        ny = min(y + h - ty, cdev->tiles.size.y - cy);
        if (ny > cdev->mdev.height)
            ny = cdev->mdev.height;
        for (tx = x; tx < x + w; tx += nx) {
            int cx = (tx + xoff) % cdev->tiles.rep_width;

            nx = min(x + w - tx, cdev->tiles.size.x - cx);
            /* Copy a tile slice to the memory device buffer. */
            memcpy(cdev->buffer.bytes,
                   cdev->tiles.data + cy * cdev->tiles.raster,
                   cdev->tiles.raster * ny);
            /* Intersect the tile with the source data. */
            /* mcolor0 and mcolor1 invert the data if needed. */
            /* This call can't fail. */
            (*dev_proc(&cdev->mdev, copy_mono)) ((gx_device *) & cdev->mdev,
                                 data + (ty - y) * raster, sourcex + tx - x,
                                                 raster, gx_no_bitmap_id,
                                           cx, 0, nx, ny, mcolor0, mcolor1);
            /* Now copy the color through the double mask. */
            code = (*dev_proc(cdev->target, copy_mono)) (cdev->target,
                                 cdev->buffer.bytes, cx, cdev->tiles.raster,
                                                         gx_no_bitmap_id,
                                  tx, ty, nx, ny, gx_no_color_index, color);
            if (code < 0)
                return code;
        }
    }
    return 0;
}

/*
 * Define the skeleton for the other copying operations.  We can't use the
 * BitBlt tricks: we have to scan for runs of 1s.  There are many obvious
 * ways to speed this up; we'll implement some if we need to.  The schema
 * is:
 *      FOR_RUNS(data_row, tx1, tx, ty) {
 *        ... process the run ([tx1,tx),ty) ...
 *      } END_FOR_RUNS();
 * Free variables: cdev, data, sourcex, raster, x, y, w, h.
 */
#define t_next(tx)\
  BEGIN {\
    if ( ++cx == cdev->tiles.size.x )\
      cx = 0, tp = tile_row, tbit = 0x80;\
    else if ( (tbit >>= 1) == 0 )\
      tp++, tbit = 0x80;\
    tx++;\
  } END
#define FOR_RUNS(data_row, tx1, tx, ty)\
        const byte *data_row = data;\
        int cy = (y + cdev->phase.y) % cdev->tiles.rep_height;\
        const byte *tile_row = cdev->tiles.data + cy * cdev->tiles.raster;\
        int ty;\
\
        for ( ty = y; ty < y + h; ty++, data_row += raster ) {\
          int cx = (x + x_offset(ty, cdev)) % cdev->tiles.rep_width;\
          const byte *tp = tile_row + (cx >> 3);\
          byte tbit = 0x80 >> (cx & 7);\
          int tx;\
\
          for ( tx = x; tx < x + w; ) {\
            int tx1;\
\
            /* Skip a run of 0s. */\
            while ( tx < x + w && (*tp & tbit) == 0 )\
              t_next(tx);\
            if ( tx == x + w )\
              break;\
            /* Scan a run of 1s. */\
            tx1 = tx;\
            do {\
              t_next(tx);\
            } while ( tx < x + w && (*tp & tbit) != 0 );\
            if_debug3m('T', cdev->memory, "[T]run x=(%d,%d), y=%d\n", tx1, tx, ty);
/* (body goes here) */
#define END_FOR_RUNS()\
          }\
          if ( ++cy == cdev->tiles.size.y )\
            cy = 0, tile_row = cdev->tiles.data;\
          else\
            tile_row += cdev->tiles.raster;\
        }

/* Copy a color rectangle. */
static int
tile_clip_copy_color(gx_device * dev,
                const byte * data, int sourcex, int raster, gx_bitmap_id id,
                     int x, int y, int w, int h)
{
    gx_device_tile_clip *cdev = (gx_device_tile_clip *) dev;

    fit_copy(dev, data, sourcex, raster, id, x, y, w, h);
    {
        FOR_RUNS(data_row, txrun, tx, ty) {
            /* Copy the run. */
            int code = (*dev_proc(cdev->target, copy_color))
            (cdev->target, data_row, sourcex + txrun - x, raster,
             gx_no_bitmap_id, txrun, ty, tx - txrun, 1);

            if (code < 0)
                return code;
        }
        END_FOR_RUNS();
    }
    return 0;
}

/* Copy a color rectangle. */
static int
tile_clip_copy_planes(gx_device * dev,
                const byte * data, int sourcex, int raster, gx_bitmap_id id,
                     int x, int y, int w, int h, int plane_height)
{
    gx_device_tile_clip *cdev = (gx_device_tile_clip *) dev;

    fit_copy(dev, data, sourcex, raster, id, x, y, w, h);
    {
        FOR_RUNS(data_row, txrun, tx, ty) {
            /* Copy the run. */
            int code = (*dev_proc(cdev->target, copy_planes))
            (cdev->target, data_row, sourcex + txrun - x, raster,
             gx_no_bitmap_id, txrun, ty, tx - txrun, 1, plane_height);

            if (code < 0)
                return code;
        }
        END_FOR_RUNS();
    }
    return 0;
}


/* Copy an alpha rectangle similarly. */
static int
tile_clip_copy_alpha(gx_device * dev,
                const byte * data, int sourcex, int raster, gx_bitmap_id id,
                int x, int y, int w, int h, gx_color_index color, int depth)
{
    gx_device_tile_clip *cdev = (gx_device_tile_clip *) dev;

    fit_copy(dev, data, sourcex, raster, id, x, y, w, h);
    {
        FOR_RUNS(data_row, txrun, tx, ty) {
            /* Copy the run. */
            int code = (*dev_proc(cdev->target, copy_alpha))
            (cdev->target, data_row, sourcex + txrun - x, raster,
             gx_no_bitmap_id, txrun, ty, tx - txrun, 1, color, depth);

            if (code < 0)
                return code;
        }
        END_FOR_RUNS();
    }
    return 0;
}

static int
tile_clip_copy_alpha_hl_color(gx_device * dev,
                const byte * data, int sourcex, int raster, gx_bitmap_id id,
                int x, int y, int w, int h, const gx_drawing_color *pdcolor, 
                int depth)
{
    gx_device_tile_clip *cdev = (gx_device_tile_clip *) dev;

    fit_copy(dev, data, sourcex, raster, id, x, y, w, h);
    {
        FOR_RUNS(data_row, txrun, tx, ty) {
            /* Copy the run. */
            int code = (*dev_proc(cdev->target, copy_alpha_hl_color))
            (cdev->target, data_row, sourcex + txrun - x, raster,
             gx_no_bitmap_id, txrun, ty, tx - txrun, 1, pdcolor, depth);

            if (code < 0)
                return code;
        }
        END_FOR_RUNS();
    }
    return 0;
}

/* Copy a RasterOp rectangle similarly. */
static int
tile_clip_strip_copy_rop(gx_device * dev,
               const byte * data, int sourcex, uint raster, gx_bitmap_id id,
                         const gx_color_index * scolors,
           const gx_strip_bitmap * textures, const gx_color_index * tcolors,
                         int x, int y, int w, int h,
                       int phase_x, int phase_y, gs_logical_operation_t lop)
{
    gx_device_tile_clip *cdev = (gx_device_tile_clip *) dev;

    fit_copy(dev, data, sourcex, raster, id, x, y, w, h);
    {
        FOR_RUNS(data_row, txrun, tx, ty) {
            /* Copy the run. */
            int code = (*dev_proc(cdev->target, strip_copy_rop))
            (cdev->target, data_row, sourcex + txrun - x, raster,
             gx_no_bitmap_id, scolors, textures, tcolors,
             txrun, ty, tx - txrun, 1, phase_x, phase_y, lop);

            if (code < 0)
                return code;
        }
        END_FOR_RUNS();
    }
    return 0;
}

static int
tile_clip_strip_copy_rop2(gx_device * dev,
               const byte * data, int sourcex, uint raster, gx_bitmap_id id,
                         const gx_color_index * scolors,
           const gx_strip_bitmap * textures, const gx_color_index * tcolors,
                         int x, int y, int w, int h,
                       int phase_x, int phase_y, gs_logical_operation_t lop,
                       uint planar_height)
{
    gx_device_tile_clip *cdev = (gx_device_tile_clip *) dev;

    fit_copy(dev, data, sourcex, raster, id, x, y, w, h);
    {
        FOR_RUNS(data_row, txrun, tx, ty) {
            /* Copy the run. */
            int code = (*dev_proc(cdev->target, strip_copy_rop2))
            (cdev->target, data_row, sourcex + txrun - x, raster,
             gx_no_bitmap_id, scolors, textures, tcolors,
             txrun, ty, tx - txrun, 1, phase_x, phase_y, lop,
             planar_height);

            if (code < 0)
                return code;
        }
        END_FOR_RUNS();
    }
    return 0;
}