/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */

/* cairo - a vector graphics library with display and print output

 *

 * Copyright (c) 2008  M Joonas Pihlaja

 *

 * Permission is hereby granted, free of charge, to any person

 * obtaining a copy of this software and associated documentation

 * files (the "Software"), to deal in the Software without

 * restriction, including without limitation the rights to use,

 * copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following

 * conditions:

 *

 * The above copyright notice and this permission notice shall be

 * included in all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

 * OTHER DEALINGS IN THE SOFTWARE.

 */

#include "cairoint.h"

#include "cairo-composite-rectangles-private.h"

#include "cairo-clip-private.h"

#include "cairo-error-private.h"

#include "cairo-fixed-private.h"

#include "cairo-types-private.h"

static void

_cairo_nil_destroy (void *abstract)

{

    (void) abstract;

}

static cairo_status_t

_cairo_nil_scan_converter_generate (void *abstract_converter,

            cairo_span_renderer_t *renderer)

{

    (void) abstract_converter;

    (void) renderer;

    return _cairo_scan_converter_status (abstract_converter);

}

cairo_status_t

_cairo_scan_converter_status (void *abstract_converter)

{

    cairo_scan_converter_t *converter = abstract_converter;

    return converter->status;

}

cairo_status_t

_cairo_scan_converter_set_error (void *abstract_converter,

         cairo_status_t error)

{

    cairo_scan_converter_t *converter = abstract_converter;

    if (error == CAIRO_STATUS_SUCCESS)

  ASSERT_NOT_REACHED;

    if (converter->status == CAIRO_STATUS_SUCCESS) {

  converter->generate = _cairo_nil_scan_converter_generate;

  converter->status = error;

    }

    return converter->status;

}

static void

_cairo_nil_scan_converter_init (cairo_scan_converter_t *converter,

        cairo_status_t status)

{

    converter->destroy = _cairo_nil_destroy;

    converter->status = CAIRO_STATUS_SUCCESS;

    status = _cairo_scan_converter_set_error (converter, status);

}

cairo_scan_converter_t *

_cairo_scan_converter_create_in_error (cairo_status_t status)

{

#define RETURN_NIL {\

      static cairo_scan_converter_t nil;\

      _cairo_nil_scan_converter_init (&nil, status);\

      return &nil;\

  }

    switch (status) {

    case CAIRO_STATUS_SUCCESS:

    case CAIRO_STATUS_LAST_STATUS:

  ASSERT_NOT_REACHED;

  break;

    case CAIRO_STATUS_INVALID_RESTORE: RETURN_NIL;

    case CAIRO_STATUS_INVALID_POP_GROUP: RETURN_NIL;

    case CAIRO_STATUS_NO_CURRENT_POINT: RETURN_NIL;

    case CAIRO_STATUS_INVALID_MATRIX: RETURN_NIL;

    case CAIRO_STATUS_INVALID_STATUS: RETURN_NIL;

    case CAIRO_STATUS_NULL_POINTER: RETURN_NIL;

    case CAIRO_STATUS_INVALID_STRING: RETURN_NIL;

    case CAIRO_STATUS_INVALID_PATH_DATA: RETURN_NIL;

    case CAIRO_STATUS_READ_ERROR: RETURN_NIL;

    case CAIRO_STATUS_WRITE_ERROR: RETURN_NIL;

    case CAIRO_STATUS_SURFACE_FINISHED: RETURN_NIL;

    case CAIRO_STATUS_SURFACE_TYPE_MISMATCH: RETURN_NIL;

    case CAIRO_STATUS_PATTERN_TYPE_MISMATCH: RETURN_NIL;

    case CAIRO_STATUS_INVALID_CONTENT: RETURN_NIL;

    case CAIRO_STATUS_INVALID_FORMAT: RETURN_NIL;

    case CAIRO_STATUS_INVALID_VISUAL: RETURN_NIL;

    case CAIRO_STATUS_FILE_NOT_FOUND: RETURN_NIL;

    case CAIRO_STATUS_INVALID_DASH: RETURN_NIL;

    case CAIRO_STATUS_INVALID_DSC_COMMENT: RETURN_NIL;

    case CAIRO_STATUS_INVALID_INDEX: RETURN_NIL;

    case CAIRO_STATUS_CLIP_NOT_REPRESENTABLE: RETURN_NIL;

    case CAIRO_STATUS_TEMP_FILE_ERROR: RETURN_NIL;

    case CAIRO_STATUS_INVALID_STRIDE: RETURN_NIL;

    case CAIRO_STATUS_FONT_TYPE_MISMATCH: RETURN_NIL;

    case CAIRO_STATUS_USER_FONT_IMMUTABLE: RETURN_NIL;

    case CAIRO_STATUS_USER_FONT_ERROR: RETURN_NIL;

    case CAIRO_STATUS_NEGATIVE_COUNT: RETURN_NIL;

    case CAIRO_STATUS_INVALID_CLUSTERS: RETURN_NIL;

    case CAIRO_STATUS_INVALID_SLANT: RETURN_NIL;

    case CAIRO_STATUS_INVALID_WEIGHT: RETURN_NIL;

    case CAIRO_STATUS_NO_MEMORY: RETURN_NIL;

    case CAIRO_STATUS_INVALID_SIZE: RETURN_NIL;

    case CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED: RETURN_NIL;

    case CAIRO_STATUS_DEVICE_TYPE_MISMATCH: RETURN_NIL;

    case CAIRO_STATUS_DEVICE_ERROR: RETURN_NIL;

    case CAIRO_STATUS_INVALID_MESH_CONSTRUCTION: RETURN_NIL;

    case CAIRO_STATUS_DEVICE_FINISHED: RETURN_NIL;

    case CAIRO_STATUS_JBIG2_GLOBAL_MISSING:

    case CAIRO_STATUS_PNG_ERROR:

    case CAIRO_STATUS_FREETYPE_ERROR:

    case CAIRO_STATUS_WIN32_GDI_ERROR:

    case CAIRO_STATUS_TAG_ERROR:

    case CAIRO_STATUS_DWRITE_ERROR:

    default:

  break;

    }

    status = CAIRO_STATUS_NO_MEMORY;

    RETURN_NIL;

#undef RETURN_NIL

}

static cairo_status_t

_cairo_nil_span_renderer_render_rows (

    void        *abstract_renderer,

    int          y,

    int          height,

    const cairo_half_open_span_t  *coverages,

    unsigned         num_coverages)

{

    (void) y;

    (void) height;

    (void) coverages;

    (void) num_coverages;

    return _cairo_span_renderer_status (abstract_renderer);

}

static cairo_status_t

_cairo_nil_span_renderer_finish (void *abstract_renderer)

{

    return _cairo_span_renderer_status (abstract_renderer);

}

cairo_status_t

_cairo_span_renderer_status (void *abstract_renderer)

{

    cairo_span_renderer_t *renderer = abstract_renderer;

    return renderer->status;

}

cairo_status_t

_cairo_span_renderer_set_error (

    void *abstract_renderer,

    cairo_status_t error)

{

    cairo_span_renderer_t *renderer = abstract_renderer;

    if (error == CAIRO_STATUS_SUCCESS) {

  ASSERT_NOT_REACHED;

    }

    if (renderer->status == CAIRO_STATUS_SUCCESS) {

  renderer->render_rows = _cairo_nil_span_renderer_render_rows;

  renderer->finish = _cairo_nil_span_renderer_finish;

  renderer->status = error;

    }

    return renderer->status;

}

static void

_cairo_nil_span_renderer_init (cairo_span_renderer_t *renderer,

             cairo_status_t status)

{

    renderer->destroy = _cairo_nil_destroy;

    renderer->status = CAIRO_STATUS_SUCCESS;

    status = _cairo_span_renderer_set_error (renderer, status);

}

cairo_span_renderer_t *

_cairo_span_renderer_create_in_error (cairo_status_t status)

{

#define RETURN_NIL {\

      static cairo_span_renderer_t nil;\

      _cairo_nil_span_renderer_init (&nil, status);\

      return &nil;\

  }

    switch (status) {

    case CAIRO_STATUS_SUCCESS:

    case CAIRO_STATUS_LAST_STATUS:

  ASSERT_NOT_REACHED;

  break;

    case CAIRO_STATUS_INVALID_RESTORE: RETURN_NIL;

    case CAIRO_STATUS_INVALID_POP_GROUP: RETURN_NIL;

    case CAIRO_STATUS_NO_CURRENT_POINT: RETURN_NIL;

    case CAIRO_STATUS_INVALID_MATRIX: RETURN_NIL;

    case CAIRO_STATUS_INVALID_STATUS: RETURN_NIL;

    case CAIRO_STATUS_NULL_POINTER: RETURN_NIL;

    case CAIRO_STATUS_INVALID_STRING: RETURN_NIL;

    case CAIRO_STATUS_INVALID_PATH_DATA: RETURN_NIL;

    case CAIRO_STATUS_READ_ERROR: RETURN_NIL;

    case CAIRO_STATUS_WRITE_ERROR: RETURN_NIL;

    case CAIRO_STATUS_SURFACE_FINISHED: RETURN_NIL;

    case CAIRO_STATUS_SURFACE_TYPE_MISMATCH: RETURN_NIL;

    case CAIRO_STATUS_PATTERN_TYPE_MISMATCH: RETURN_NIL;

    case CAIRO_STATUS_INVALID_CONTENT: RETURN_NIL;

    case CAIRO_STATUS_INVALID_FORMAT: RETURN_NIL;

    case CAIRO_STATUS_INVALID_VISUAL: RETURN_NIL;

    case CAIRO_STATUS_FILE_NOT_FOUND: RETURN_NIL;

    case CAIRO_STATUS_INVALID_DASH: RETURN_NIL;

    case CAIRO_STATUS_INVALID_DSC_COMMENT: RETURN_NIL;

    case CAIRO_STATUS_INVALID_INDEX: RETURN_NIL;

    case CAIRO_STATUS_CLIP_NOT_REPRESENTABLE: RETURN_NIL;

    case CAIRO_STATUS_TEMP_FILE_ERROR: RETURN_NIL;

    case CAIRO_STATUS_INVALID_STRIDE: RETURN_NIL;

    case CAIRO_STATUS_FONT_TYPE_MISMATCH: RETURN_NIL;

    case CAIRO_STATUS_USER_FONT_IMMUTABLE: RETURN_NIL;

    case CAIRO_STATUS_USER_FONT_ERROR: RETURN_NIL;

    case CAIRO_STATUS_NEGATIVE_COUNT: RETURN_NIL;

    case CAIRO_STATUS_INVALID_CLUSTERS: RETURN_NIL;

    case CAIRO_STATUS_INVALID_SLANT: RETURN_NIL;

    case CAIRO_STATUS_INVALID_WEIGHT: RETURN_NIL;

    case CAIRO_STATUS_NO_MEMORY: RETURN_NIL;

    case CAIRO_STATUS_INVALID_SIZE: RETURN_NIL;

    case CAIRO_STATUS_USER_FONT_NOT_IMPLEMENTED: RETURN_NIL;

    case CAIRO_STATUS_DEVICE_TYPE_MISMATCH: RETURN_NIL;

    case CAIRO_STATUS_DEVICE_ERROR: RETURN_NIL;

    case CAIRO_STATUS_INVALID_MESH_CONSTRUCTION: RETURN_NIL;

    case CAIRO_STATUS_DEVICE_FINISHED: RETURN_NIL;

    case CAIRO_STATUS_JBIG2_GLOBAL_MISSING: RETURN_NIL;

    case CAIRO_STATUS_PNG_ERROR: RETURN_NIL;

    case CAIRO_STATUS_FREETYPE_ERROR: RETURN_NIL;

    case CAIRO_STATUS_WIN32_GDI_ERROR: RETURN_NIL;

    case CAIRO_STATUS_TAG_ERROR: RETURN_NIL;

    case CAIRO_STATUS_DWRITE_ERROR: RETURN_NIL;

    default:

  break;

    }

    status = CAIRO_STATUS_NO_MEMORY;

    RETURN_NIL;

#undef RETURN_NIL

}