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cairo-win32-printing-surface.c

/* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
/* Cairo - a vector graphics library with display and print output
 *
 * Copyright © 2007, 2008 Adrian Johnson
 *
 * This library is free software; you can redistribute it and/or
 * modify it either under the terms of the GNU Lesser General Public
 * License version 2.1 as published by the Free Software Foundation
 * (the "LGPL") or, at your option, under the terms of the Mozilla
 * Public License Version 1.1 (the "MPL"). If you do not alter this
 * notice, a recipient may use your version of this file under either
 * the MPL or the LGPL.
 *
 * You should have received a copy of the LGPL along with this library
 * in the file COPYING-LGPL-2.1; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
 * You should have received a copy of the MPL along with this library
 * in the file COPYING-MPL-1.1
 *
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
 * OF ANY KIND, either express or implied. See the LGPL or the MPL for
 * the specific language governing rights and limitations.
 *
 * The Original Code is the cairo graphics library.
 *
 * The Initial Developer of the Original Code is Adrian Johnson.
 *
 * Contributor(s):
 *      Adrian Johnson <ajohnson@redneon.com>
 *      Vladimir Vukicevic <vladimir@pobox.com>
 */

#define WIN32_LEAN_AND_MEAN
/* We require Windows 2000 features such as ETO_PDY */
#if !defined(WINVER) || (WINVER < 0x0500)
# define WINVER 0x0500
#endif
#if !defined(_WIN32_WINNT) || (_WIN32_WINNT < 0x0500)
# define _WIN32_WINNT 0x0500
#endif

#include "cairoint.h"

#include "cairo-error-private.h"
#include "cairo-paginated-private.h"

#include "cairo-clip-private.h"
#include "cairo-win32-private.h"
#include "cairo-recording-surface-private.h"
#include "cairo-scaled-font-subsets-private.h"
#include "cairo-image-info-private.h"
#include "cairo-surface-clipper-private.h"

#include <windows.h>

#if !defined(POSTSCRIPT_IDENTIFY)
# define POSTSCRIPT_IDENTIFY 0x1015
#endif

#if !defined(PSIDENT_GDICENTRIC)
# define PSIDENT_GDICENTRIC 0x0000
#endif

#if !defined(GET_PS_FEATURESETTING)
# define GET_PS_FEATURESETTING 0x1019
#endif

#if !defined(FEATURESETTING_PSLEVEL)
# define FEATURESETTING_PSLEVEL 0x0002
#endif

#if !defined(GRADIENT_FILL_RECT_H)
# define GRADIENT_FILL_RECT_H 0x00
#endif

#if !defined(CHECKJPEGFORMAT)
# define CHECKJPEGFORMAT 0x1017
#endif

#if !defined(CHECKPNGFORMAT)
# define CHECKPNGFORMAT 0x1018
#endif

#define PELS_72DPI  ((LONG)(72. / 0.0254))

static const cairo_surface_backend_t cairo_win32_printing_surface_backend;
static const cairo_paginated_surface_backend_t cairo_win32_surface_paginated_backend;

static void
_cairo_win32_printing_surface_init_ps_mode (cairo_win32_surface_t *surface)
{
    DWORD word;
    INT ps_feature, ps_level;

    word = PSIDENT_GDICENTRIC;
    if (ExtEscape (surface->dc, POSTSCRIPT_IDENTIFY, sizeof(DWORD), (char *)&word, 0, (char *)NULL) <= 0)
      return;

    ps_feature = FEATURESETTING_PSLEVEL;
    if (ExtEscape (surface->dc, GET_PS_FEATURESETTING, sizeof(INT),
               (char *)&ps_feature, sizeof(INT), (char *)&ps_level) <= 0)
      return;

    if (ps_level >= 3)
      surface->flags |= CAIRO_WIN32_SURFACE_CAN_RECT_GRADIENT;
}

static void
_cairo_win32_printing_surface_init_image_support (cairo_win32_surface_t *surface)
{
    DWORD word;

    word = CHECKJPEGFORMAT;
    if (ExtEscape(surface->dc, QUERYESCSUPPORT, sizeof(word), (char *)&word, 0, (char *)NULL) > 0)
      surface->flags |= CAIRO_WIN32_SURFACE_CAN_CHECK_JPEG;

    word = CHECKPNGFORMAT;
    if (ExtEscape(surface->dc, QUERYESCSUPPORT, sizeof(word), (char *)&word, 0, (char *)NULL) > 0)
      surface->flags |= CAIRO_WIN32_SURFACE_CAN_CHECK_PNG;
}

/* When creating an EMF file, ExtTextOut with ETO_GLYPH_INDEX does not
 * work unless the GDI function GdiInitializeLanguagePack() has been
 * called.
 *
 *   http://m-a-tech.blogspot.com/2009/04/emf-buffer-idiocracy.html
 *
 * The only information I could find on the how to use this
 * undocumented function is the use in:
 *
 * http://src.chromium.org/viewvc/chrome/trunk/src/chrome/renderer/render_process.cc?view=markup
 *
 * to solve the same problem. The above code first checks if LPK.DLL
 * is already loaded. If it is not it calls
 * GdiInitializeLanguagePack() using the prototype
 *   BOOL GdiInitializeLanguagePack (int)
 * and argument 0.
 */
static void
_cairo_win32_printing_surface_init_language_pack (cairo_win32_surface_t *surface)
{
    typedef BOOL (WINAPI *gdi_init_lang_pack_func_t)(int);
    gdi_init_lang_pack_func_t gdi_init_lang_pack;
    HMODULE module;

    if (GetModuleHandleW (L"LPK.DLL"))
      return;

    module = GetModuleHandleW (L"GDI32.DLL");
    if (module) {
      gdi_init_lang_pack = (gdi_init_lang_pack_func_t)
          GetProcAddress (module, "GdiInitializeLanguagePack");
      if (gdi_init_lang_pack)
          gdi_init_lang_pack (0);
    }
}

static cairo_int_status_t
analyze_surface_pattern_transparency (cairo_surface_pattern_t *pattern)
{
    cairo_image_surface_t  *image;
    void             *image_extra;
    cairo_int_status_t      status;
    cairo_image_transparency_t transparency;

    status = _cairo_surface_acquire_source_image (pattern->surface,
                                      &image,
                                      &image_extra);
    if (status)
      return status;

    transparency = _cairo_image_analyze_transparency (image);
    switch (transparency) {
    case CAIRO_IMAGE_UNKNOWN:
      ASSERT_NOT_REACHED;
    case CAIRO_IMAGE_IS_OPAQUE:
      status = CAIRO_STATUS_SUCCESS;
      break;

    case CAIRO_IMAGE_HAS_BILEVEL_ALPHA:
    case CAIRO_IMAGE_HAS_ALPHA:
      status = CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY;
      break;
    }

    _cairo_surface_release_source_image (pattern->surface, image, image_extra);

    return status;
}

static cairo_bool_t
surface_pattern_supported (const cairo_surface_pattern_t *pattern)
{
    if (_cairo_surface_is_recording (pattern->surface))
      return TRUE;

    if (cairo_surface_get_type (pattern->surface) != CAIRO_SURFACE_TYPE_WIN32 &&
      pattern->surface->backend->acquire_source_image == NULL)
    {
      return FALSE;
    }

    return TRUE;
}

static cairo_bool_t
pattern_supported (cairo_win32_surface_t *surface, const cairo_pattern_t *pattern)
{
    if (pattern->type == CAIRO_PATTERN_TYPE_SOLID)
      return TRUE;

    if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE)
      return surface_pattern_supported ((const cairo_surface_pattern_t *) pattern);

    if (pattern->type == CAIRO_PATTERN_TYPE_LINEAR)
      return surface->flags & CAIRO_WIN32_SURFACE_CAN_RECT_GRADIENT;

    return FALSE;
}

static cairo_int_status_t
_cairo_win32_printing_surface_analyze_operation (cairo_win32_surface_t *surface,
                                                 cairo_operator_t       op,
                                                 const cairo_pattern_t *pattern)
{
    if (! pattern_supported (surface, pattern))
      return CAIRO_INT_STATUS_UNSUPPORTED;

    if (!(op == CAIRO_OPERATOR_SOURCE ||
        op == CAIRO_OPERATOR_OVER ||
        op == CAIRO_OPERATOR_CLEAR))
      return CAIRO_INT_STATUS_UNSUPPORTED;

    if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
      cairo_surface_pattern_t *surface_pattern = (cairo_surface_pattern_t *) pattern;

      if ( _cairo_surface_is_recording (surface_pattern->surface))
          return CAIRO_INT_STATUS_ANALYZE_RECORDING_SURFACE_PATTERN;
    }

    if (op == CAIRO_OPERATOR_SOURCE ||
      op == CAIRO_OPERATOR_CLEAR)
      return CAIRO_STATUS_SUCCESS;

    /* CAIRO_OPERATOR_OVER is only supported for opaque patterns. If
     * the pattern contains transparency, we return
     * CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY to the analysis
     * surface. If the analysis surface determines that there is
     * anything drawn under this operation, a fallback image will be
     * used. Otherwise the operation will be replayed during the
     * render stage and we blend the transarency into the white
     * background to convert the pattern to opaque.
     */

    if (pattern->type == CAIRO_PATTERN_TYPE_SURFACE) {
      cairo_surface_pattern_t *surface_pattern = (cairo_surface_pattern_t *) pattern;

      return analyze_surface_pattern_transparency (surface_pattern);
    }

    if (_cairo_pattern_is_opaque (pattern, NULL))
      return CAIRO_STATUS_SUCCESS;
    else
      return CAIRO_INT_STATUS_FLATTEN_TRANSPARENCY;
}

static cairo_bool_t
_cairo_win32_printing_surface_operation_supported (cairo_win32_surface_t *surface,
                                                   cairo_operator_t       op,
                                                   const cairo_pattern_t *pattern)
{
    if (_cairo_win32_printing_surface_analyze_operation (surface, op, pattern) != CAIRO_INT_STATUS_UNSUPPORTED)
      return TRUE;
    else
      return FALSE;
}

static void
_cairo_win32_printing_surface_init_clear_color (cairo_win32_surface_t *surface,
                                    cairo_solid_pattern_t *color)
{
    if (surface->content == CAIRO_CONTENT_COLOR_ALPHA)
      _cairo_pattern_init_solid (color, CAIRO_COLOR_WHITE);
    else
      _cairo_pattern_init_solid (color, CAIRO_COLOR_BLACK);
}

static COLORREF
_cairo_win32_printing_surface_flatten_transparency (cairo_win32_surface_t *surface,
                                        const cairo_color_t   *color)
{
    COLORREF c;
    BYTE red, green, blue;

    red   = color->red_short   >> 8;
    green = color->green_short >> 8;
    blue  = color->blue_short  >> 8;

    if (!CAIRO_COLOR_IS_OPAQUE(color)) {
      if (surface->content == CAIRO_CONTENT_COLOR_ALPHA) {
          /* Blend into white */
          uint8_t one_minus_alpha = 255 - (color->alpha_short >> 8);

          red   = (color->red_short   >> 8) + one_minus_alpha;
          green = (color->green_short >> 8) + one_minus_alpha;
          blue  = (color->blue_short  >> 8) + one_minus_alpha;
      } else {
          /* Blend into black */
          red   = (color->red_short   >> 8);
          green = (color->green_short >> 8);
          blue  = (color->blue_short  >> 8);
      }
    }
    c = RGB (red, green, blue);

    return c;
}

static cairo_status_t
_cairo_win32_printing_surface_select_solid_brush (cairo_win32_surface_t *surface,
                                                  const cairo_pattern_t *source)
{
    cairo_solid_pattern_t *pattern = (cairo_solid_pattern_t *) source;
    COLORREF color;

    color = _cairo_win32_printing_surface_flatten_transparency (surface,
                                                &pattern->color);
    surface->brush = CreateSolidBrush (color);
    if (!surface->brush)
      return _cairo_win32_print_gdi_error ("_cairo_win32_surface_select_solid_brush(CreateSolidBrush)");
    surface->old_brush = SelectObject (surface->dc, surface->brush);

    return CAIRO_STATUS_SUCCESS;
}

static void
_cairo_win32_printing_surface_done_solid_brush (cairo_win32_surface_t *surface)
{
    if (surface->old_brush) {
      SelectObject (surface->dc, surface->old_brush);
      DeleteObject (surface->brush);
      surface->old_brush = NULL;
    }
}

static cairo_status_t
_cairo_win32_printing_surface_get_ctm_clip_box (cairo_win32_surface_t *surface,
                                    RECT                  *clip)
{
    XFORM xform;

    _cairo_matrix_to_win32_xform (&surface->ctm, &xform);
    if (!ModifyWorldTransform (surface->dc, &xform, MWT_LEFTMULTIPLY))
      return _cairo_win32_print_gdi_error ("_cairo_win32_printing_surface_get_clip_box:ModifyWorldTransform");
    GetClipBox (surface->dc, clip);

    _cairo_matrix_to_win32_xform (&surface->gdi_ctm, &xform);
    if (!SetWorldTransform (surface->dc, &xform))
      return _cairo_win32_print_gdi_error ("_cairo_win32_printing_surface_get_clip_box:SetWorldTransform");

    return CAIRO_STATUS_SUCCESS;
}

static cairo_status_t
_cairo_win32_printing_surface_paint_solid_pattern (cairo_win32_surface_t *surface,
                                                   const cairo_pattern_t *pattern)
{
    RECT clip;
    cairo_status_t status;

    GetClipBox (surface->dc, &clip);
    status = _cairo_win32_printing_surface_select_solid_brush (surface, pattern);
    if (status)
      return status;

    FillRect (surface->dc, &clip, surface->brush);
    _cairo_win32_printing_surface_done_solid_brush (surface);

    return CAIRO_STATUS_SUCCESS;
}

static cairo_status_t
_cairo_win32_printing_surface_paint_recording_pattern (cairo_win32_surface_t   *surface,
                                           cairo_surface_pattern_t *pattern)
{
    cairo_content_t old_content;
    cairo_matrix_t old_ctm;
    cairo_bool_t old_has_ctm;
    cairo_rectangle_int_t recording_extents;
    cairo_status_t status;
    cairo_extend_t extend;
    cairo_matrix_t p2d;
    XFORM xform;
    int x_tile, y_tile, left, right, top, bottom;
    RECT clip;
    cairo_recording_surface_t *recording_surface = (cairo_recording_surface_t *) pattern->surface;
    cairo_box_t bbox;

    extend = cairo_pattern_get_extend (&pattern->base);

    p2d = pattern->base.matrix;
    status = cairo_matrix_invert (&p2d);
    /* _cairo_pattern_set_matrix guarantees invertibility */
    assert (status == CAIRO_STATUS_SUCCESS);

    old_ctm = surface->ctm;
    old_has_ctm = surface->has_ctm;
    cairo_matrix_multiply (&p2d, &p2d, &surface->ctm);
    surface->ctm = p2d;
    SaveDC (surface->dc);
    _cairo_matrix_to_win32_xform (&p2d, &xform);

    status = _cairo_recording_surface_get_bbox (recording_surface, &bbox, NULL);
    if (status)
      return status;

    _cairo_box_round_to_rectangle (&bbox, &recording_extents);

    status = _cairo_win32_printing_surface_get_ctm_clip_box (surface, &clip);
    if (status)
      return status;

    if (extend == CAIRO_EXTEND_REPEAT || extend == CAIRO_EXTEND_REFLECT) {
      left = floor (clip.left / _cairo_fixed_to_double (bbox.p2.x - bbox.p1.x));
      right = ceil (clip.right / _cairo_fixed_to_double (bbox.p2.x - bbox.p1.x));
      top = floor (clip.top / _cairo_fixed_to_double (bbox.p2.y - bbox.p1.y));
      bottom = ceil (clip.bottom / _cairo_fixed_to_double (bbox.p2.y - bbox.p1.y));
    } else {
      left = 0;
      right = 1;
      top = 0;
      bottom = 1;
    }

    old_content = surface->content;
    if (recording_surface->base.content == CAIRO_CONTENT_COLOR) {
      surface->content = CAIRO_CONTENT_COLOR;
      status = _cairo_win32_printing_surface_paint_solid_pattern (surface,
                                                    &_cairo_pattern_black.base);
      if (status)
          return status;
    }

    for (y_tile = top; y_tile < bottom; y_tile++) {
      for (x_tile = left; x_tile < right; x_tile++) {
          cairo_matrix_t m;
          double x, y;

          SaveDC (surface->dc);
          m = p2d;
          cairo_matrix_translate (&m,
                            x_tile*recording_extents.width,
                            y_tile*recording_extents.height);
          if (extend == CAIRO_EXTEND_REFLECT) {
            if (x_tile % 2) {
                cairo_matrix_translate (&m, recording_extents.width, 0);
                cairo_matrix_scale (&m, -1, 1);
            }
            if (y_tile % 2) {
                cairo_matrix_translate (&m, 0, recording_extents.height);
                cairo_matrix_scale (&m, 1, -1);
            }
          }
          surface->ctm = m;
          surface->has_ctm = !_cairo_matrix_is_identity (&surface->ctm);

          /* Set clip path around bbox of the pattern. */
          BeginPath (surface->dc);

          x = 0;
          y = 0;
          cairo_matrix_transform_point (&surface->ctm, &x, &y);
          MoveToEx (surface->dc, (int) x, (int) y, NULL);

          x = recording_extents.width;
          y = 0;
          cairo_matrix_transform_point (&surface->ctm, &x, &y);
          LineTo (surface->dc, (int) x, (int) y);

          x = recording_extents.width;
          y = recording_extents.height;
          cairo_matrix_transform_point (&surface->ctm, &x, &y);
          LineTo (surface->dc, (int) x, (int) y);

          x = 0;
          y = recording_extents.height;
          cairo_matrix_transform_point (&surface->ctm, &x, &y);
          LineTo (surface->dc, (int) x, (int) y);

          CloseFigure (surface->dc);
          EndPath (surface->dc);
          SelectClipPath (surface->dc, RGN_AND);

          SaveDC (surface->dc); /* Allow clip path to be reset during replay */
          status = _cairo_recording_surface_replay_region (&recording_surface->base, NULL,
                                               &surface->base,
                                               CAIRO_RECORDING_REGION_NATIVE);
          assert (status != CAIRO_INT_STATUS_UNSUPPORTED);
          /* Restore both the clip save and our earlier path SaveDC */
          RestoreDC (surface->dc, -2);

          if (status)
            return status;
      }
    }

    surface->content = old_content;
    surface->ctm = old_ctm;
    surface->has_ctm = old_has_ctm;
    RestoreDC (surface->dc, -1);

    return status;
}

static cairo_int_status_t
_cairo_win32_printing_surface_check_jpeg (cairo_win32_surface_t   *surface,
                                cairo_surface_t         *source,
                                const unsigned char    **data,
                                unsigned long           *length,
                                cairo_image_info_t      *info)
{
    const unsigned char *mime_data;
    unsigned long mime_data_length;
    cairo_int_status_t status;
    DWORD result;

    if (!(surface->flags & CAIRO_WIN32_SURFACE_CAN_CHECK_JPEG))
      return CAIRO_INT_STATUS_UNSUPPORTED;

    cairo_surface_get_mime_data (source, CAIRO_MIME_TYPE_JPEG,
                         &mime_data, &mime_data_length);
    if (mime_data == NULL)
      return CAIRO_INT_STATUS_UNSUPPORTED;

    status = _cairo_image_info_get_jpeg_info (info, mime_data, mime_data_length);
    if (status)
      return status;

    result = 0;
    if (ExtEscape(surface->dc, CHECKJPEGFORMAT, mime_data_length, (char *) mime_data,
              sizeof(result), (char *) &result) <= 0)
      return CAIRO_INT_STATUS_UNSUPPORTED;

    if (result != 1)
      return CAIRO_INT_STATUS_UNSUPPORTED;

    *data = mime_data;
    *length = mime_data_length;

    return CAIRO_STATUS_SUCCESS;
}

static cairo_int_status_t
_cairo_win32_printing_surface_check_png (cairo_win32_surface_t   *surface,
                               cairo_surface_t         *source,
                               const unsigned char    **data,
                               unsigned long           *length,
                               cairo_image_info_t      *info)
{
    const unsigned char *mime_data;
    unsigned long mime_data_length;

    cairo_int_status_t status;
    DWORD result;

    if (!(surface->flags & CAIRO_WIN32_SURFACE_CAN_CHECK_PNG))
      return CAIRO_INT_STATUS_UNSUPPORTED;

    cairo_surface_get_mime_data (source, CAIRO_MIME_TYPE_PNG,
                         &mime_data, &mime_data_length);
    if (mime_data == NULL)
      return CAIRO_INT_STATUS_UNSUPPORTED;

    status = _cairo_image_info_get_png_info (info, mime_data, mime_data_length);
    if (status)
      return status;

    result = 0;
    if (ExtEscape(surface->dc, CHECKPNGFORMAT, mime_data_length, (char *) mime_data,
              sizeof(result), (char *) &result) <= 0)
      return CAIRO_INT_STATUS_UNSUPPORTED;

    if (result != 1)
      return CAIRO_INT_STATUS_UNSUPPORTED;

    *data = mime_data;
    *length = mime_data_length;

    return CAIRO_STATUS_SUCCESS;
}

static cairo_status_t
_cairo_win32_printing_surface_paint_image_pattern (cairo_win32_surface_t   *surface,
                                       cairo_surface_pattern_t *pattern)
{
    cairo_status_t status;
    cairo_extend_t extend;
    cairo_image_surface_t *image;
    void *image_extra;
    cairo_image_surface_t *opaque_image = NULL;
    BITMAPINFO bi;
    cairo_matrix_t m;
    int oldmode;
    XFORM xform;
    int x_tile, y_tile, left, right, top, bottom;
    RECT clip;
    const cairo_color_t *background_color;
    const unsigned char *mime_data;
    unsigned long mime_size;
    cairo_image_info_t mime_info;
    cairo_bool_t use_mime;
    DWORD mime_type;

    /* If we can't use StretchDIBits with this surface, we can't do anything
     * here.
     */
    if (!(surface->flags & CAIRO_WIN32_SURFACE_CAN_STRETCHDIB))
      return CAIRO_INT_STATUS_UNSUPPORTED;

    if (surface->content == CAIRO_CONTENT_COLOR_ALPHA)
      background_color = CAIRO_COLOR_WHITE;
    else
      background_color = CAIRO_COLOR_BLACK;

    extend = cairo_pattern_get_extend (&pattern->base);

    status = _cairo_surface_acquire_source_image (pattern->surface,
                                      &image, &image_extra);
    if (status)
      return status;

    if (image->base.status) {
      status = image->base.status;
      goto CLEANUP_IMAGE;
    }

    if (image->width == 0 || image->height == 0) {
      status = CAIRO_STATUS_SUCCESS;
      goto CLEANUP_IMAGE;
    }

    mime_type = BI_JPEG;
    status = _cairo_win32_printing_surface_check_jpeg (surface,
                                           pattern->surface,
                                           &mime_data,
                                           &mime_size,
                                           &mime_info);
    if (status == CAIRO_INT_STATUS_UNSUPPORTED) {
      mime_type = BI_PNG;
      status = _cairo_win32_printing_surface_check_png (surface,
                                            pattern->surface,
                                            &mime_data,
                                            &mime_size,
                                            &mime_info);
    }
    if (_cairo_status_is_error (status))
      return status;

    use_mime = (status == CAIRO_STATUS_SUCCESS);

    if (!use_mime && image->format != CAIRO_FORMAT_RGB24) {
      cairo_surface_t *opaque_surface;
      cairo_surface_pattern_t image_pattern;
      cairo_solid_pattern_t background_pattern;

      opaque_surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24,
                                         image->width,
                                         image->height);
      if (opaque_surface->status) {
          status = opaque_surface->status;
          goto CLEANUP_OPAQUE_IMAGE;
      }

      _cairo_pattern_init_solid (&background_pattern,
                           background_color);
      status = _cairo_surface_paint (opaque_surface,
                               CAIRO_OPERATOR_SOURCE,
                               &background_pattern.base,
                               NULL);
      if (status)
          goto CLEANUP_OPAQUE_IMAGE;

      _cairo_pattern_init_for_surface (&image_pattern, &image->base);
      status = _cairo_surface_paint (opaque_surface,
                               CAIRO_OPERATOR_OVER,
                               &image_pattern.base,
                               NULL);
      _cairo_pattern_fini (&image_pattern.base);
      if (status)
          goto CLEANUP_OPAQUE_IMAGE;

      opaque_image = (cairo_image_surface_t *) opaque_surface;
    } else {
      opaque_image = image;
    }

    bi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
    bi.bmiHeader.biWidth = use_mime ? mime_info.width : opaque_image->width;
    bi.bmiHeader.biHeight = use_mime ? - mime_info.height : -opaque_image->height;
    bi.bmiHeader.biSizeImage = use_mime ? mime_size : 0;
    bi.bmiHeader.biXPelsPerMeter = PELS_72DPI;
    bi.bmiHeader.biYPelsPerMeter = PELS_72DPI;
    bi.bmiHeader.biPlanes = 1;
    bi.bmiHeader.biBitCount = 32;
    bi.bmiHeader.biCompression = use_mime ? mime_type : BI_RGB;
    bi.bmiHeader.biClrUsed = 0;
    bi.bmiHeader.biClrImportant = 0;

    m = pattern->base.matrix;
    status = cairo_matrix_invert (&m);
    /* _cairo_pattern_set_matrix guarantees invertibility */
    assert (status == CAIRO_STATUS_SUCCESS);

    cairo_matrix_multiply (&m, &m, &surface->gdi_ctm);
    SaveDC (surface->dc);
    _cairo_matrix_to_win32_xform (&m, &xform);

    if (! SetWorldTransform (surface->dc, &xform)) {
      status = _cairo_win32_print_gdi_error ("_cairo_win32_printing_surface_paint_image_pattern");
      goto CLEANUP_OPAQUE_IMAGE;
    }

    oldmode = SetStretchBltMode(surface->dc, HALFTONE);

    GetClipBox (surface->dc, &clip);
    if (extend == CAIRO_EXTEND_REPEAT || extend == CAIRO_EXTEND_REFLECT) {
      left = floor ( clip.left / (double) opaque_image->width);
      right = ceil (clip.right / (double) opaque_image->width);
      top = floor (clip.top / (double) opaque_image->height);
      bottom = ceil (clip.bottom / (double) opaque_image->height);
    } else {
      left = 0;
      right = 1;
      top = 0;
      bottom = 1;
    }

    for (y_tile = top; y_tile < bottom; y_tile++) {
      for (x_tile = left; x_tile < right; x_tile++) {
          if (!StretchDIBits (surface->dc,
                        x_tile*opaque_image->width,
                        y_tile*opaque_image->height,
                        opaque_image->width,
                        opaque_image->height,
                        0,
                        0,
                        use_mime ? mime_info.width : opaque_image->width,
                        use_mime ? mime_info.height : opaque_image->height,
                        use_mime ? mime_data : opaque_image->data,
                        &bi,
                        DIB_RGB_COLORS,
                        SRCCOPY))
          {
            status = _cairo_win32_print_gdi_error ("_cairo_win32_printing_surface_paint(StretchDIBits)");
            goto CLEANUP_OPAQUE_IMAGE;
          }
      }
    }
    SetStretchBltMode(surface->dc, oldmode);
    RestoreDC (surface->dc, -1);

CLEANUP_OPAQUE_IMAGE:
    if (opaque_image != image)
      cairo_surface_destroy (&opaque_image->base);
CLEANUP_IMAGE:
    _cairo_surface_release_source_image (pattern->surface, image, image_extra);

    return status;
}

static cairo_status_t
_cairo_win32_printing_surface_paint_surface_pattern (cairo_win32_surface_t   *surface,
                                                     cairo_surface_pattern_t *pattern)
{
    if (_cairo_surface_is_recording (pattern->surface)) {
      return _cairo_win32_printing_surface_paint_recording_pattern (surface,
                                                      pattern);
    } else {
      return _cairo_win32_printing_surface_paint_image_pattern (surface,
                                                  pattern);
    }
}

static void
vertex_set_color (TRIVERTEX *vert, cairo_color_stop_t *color)
{
    /* MSDN says that the range here is 0x0000 .. 0xff00;
     * that may well be a typo, but just chop the low bits
     * here. */
    vert->Alpha = 0xff00;
    vert->Red   = color->red_short & 0xff00;
    vert->Green = color->green_short & 0xff00;
    vert->Blue  = color->blue_short & 0xff00;
}

static cairo_int_status_t
_cairo_win32_printing_surface_paint_linear_pattern (cairo_win32_surface_t *surface,
                                                    cairo_linear_pattern_t *pattern)
{
    TRIVERTEX *vert;
    GRADIENT_RECT *rect;
    RECT clip;
    XFORM xform;
    int i, num_stops;
    cairo_matrix_t mat, rot;
    double p1x, p1y, p2x, p2y, xd, yd, d, sn, cs;
    cairo_extend_t extend;
    int range_start, range_stop, num_ranges, num_rects, stop;
    int total_verts, total_rects;
    cairo_status_t status;

    extend = cairo_pattern_get_extend (&pattern->base.base);
    SaveDC (surface->dc);

    mat = pattern->base.base.matrix;
    status = cairo_matrix_invert (&mat);
    /* _cairo_pattern_set_matrix guarantees invertibility */
    assert (status == CAIRO_STATUS_SUCCESS);

    cairo_matrix_multiply (&mat, &surface->ctm, &mat);

    p1x = _cairo_fixed_to_double (pattern->p1.x);
    p1y = _cairo_fixed_to_double (pattern->p1.y);
    p2x = _cairo_fixed_to_double (pattern->p2.x);
    p2y = _cairo_fixed_to_double (pattern->p2.y);
    cairo_matrix_translate (&mat, p1x, p1y);

    xd = p2x - p1x;
    yd = p2y - p1y;
    d = sqrt (xd*xd + yd*yd);
    sn = yd/d;
    cs = xd/d;
    cairo_matrix_init (&rot,
                   cs, sn,
                   -sn, cs,
                    0, 0);
    cairo_matrix_multiply (&mat, &rot, &mat);

    _cairo_matrix_to_win32_xform (&mat, &xform);

    if (!SetWorldTransform (surface->dc, &xform))
      return _cairo_win32_print_gdi_error ("_win32_printing_surface_paint_linear_pattern:SetWorldTransform2");

    GetClipBox (surface->dc, &clip);

    if (extend == CAIRO_EXTEND_REPEAT || extend == CAIRO_EXTEND_REFLECT) {
      range_start = floor (clip.left / d);
      range_stop = ceil (clip.right / d);
    } else {
      range_start = 0;
      range_stop = 1;
    }
    num_ranges = range_stop - range_start;
    num_stops = pattern->base.n_stops;
    num_rects = num_stops - 1;

    /* Add an extra four points and two rectangles for EXTEND_PAD */
    vert = malloc (sizeof (TRIVERTEX) * (num_rects*2*num_ranges + 4));
    rect = malloc (sizeof (GRADIENT_RECT) * (num_rects*num_ranges + 2));

    for (i = 0; i < num_ranges*num_rects; i++) {
      vert[i*2].y = (LONG) clip.top;
      if (i%num_rects == 0) {
          stop = 0;
          if (extend == CAIRO_EXTEND_REFLECT && (range_start+(i/num_rects))%2)
            stop = num_rects;
          vert[i*2].x = (LONG)(d*(range_start + i/num_rects));
          vertex_set_color (&vert[i*2], &pattern->base.stops[stop].color);
      } else {
          vert[i*2].x = vert[i*2-1].x;
          vert[i*2].Red = vert[i*2-1].Red;
          vert[i*2].Green = vert[i*2-1].Green;
          vert[i*2].Blue = vert[i*2-1].Blue;
          vert[i*2].Alpha = vert[i*2-1].Alpha;
      }

      stop = i%num_rects + 1;
      vert[i*2+1].x = (LONG)(d*(range_start + i/num_rects + pattern->base.stops[stop].offset));
      vert[i*2+1].y = (LONG) clip.bottom;
      if (extend == CAIRO_EXTEND_REFLECT && (range_start+(i/num_rects))%2)
          stop = num_rects - stop;
      vertex_set_color (&vert[i*2+1], &pattern->base.stops[stop].color);

      rect[i].UpperLeft = i*2;
      rect[i].LowerRight = i*2 + 1;
    }
    total_verts = 2*num_ranges*num_rects;
    total_rects = num_ranges*num_rects;

    if (extend == CAIRO_EXTEND_PAD) {
      vert[i*2].x = vert[i*2-1].x;
      vert[i*2].y = (LONG) clip.top;
      vert[i*2].Red = vert[i*2-1].Red;
      vert[i*2].Green = vert[i*2-1].Green;
      vert[i*2].Blue = vert[i*2-1].Blue;
      vert[i*2].Alpha = 0xff00;
      vert[i*2+1].x = clip.right;
      vert[i*2+1].y = (LONG) clip.bottom;
      vert[i*2+1].Red = vert[i*2-1].Red;
      vert[i*2+1].Green = vert[i*2-1].Green;
      vert[i*2+1].Blue = vert[i*2-1].Blue;
      vert[i*2+1].Alpha = 0xff00;
      rect[i].UpperLeft = i*2;
      rect[i].LowerRight = i*2 + 1;

      i++;

      vert[i*2].x = clip.left;
      vert[i*2].y = (LONG) clip.top;
      vert[i*2].Red = vert[0].Red;
      vert[i*2].Green = vert[0].Green;
      vert[i*2].Blue = vert[0].Blue;
      vert[i*2].Alpha = 0xff00;
      vert[i*2+1].x = vert[0].x;
      vert[i*2+1].y = (LONG) clip.bottom;
      vert[i*2+1].Red = vert[0].Red;
      vert[i*2+1].Green = vert[0].Green;
      vert[i*2+1].Blue = vert[0].Blue;
      vert[i*2+1].Alpha = 0xff00;
      rect[i].UpperLeft = i*2;
      rect[i].LowerRight = i*2 + 1;

      total_verts += 4;
      total_rects += 2;
    }

    if (!GradientFill (surface->dc,
                   vert, total_verts,
                   rect, total_rects,
                   GRADIENT_FILL_RECT_H))
      return _cairo_win32_print_gdi_error ("_win32_printing_surface_paint_linear_pattern:GradientFill");

    free (rect);
    free (vert);
    RestoreDC (surface->dc, -1);

    return 0;
}

static cairo_int_status_t
_cairo_win32_printing_surface_paint_pattern (cairo_win32_surface_t *surface,
                                             const cairo_pattern_t *pattern)
{
    cairo_status_t status;

    switch (pattern->type) {
    case CAIRO_PATTERN_TYPE_SOLID:
      status = _cairo_win32_printing_surface_paint_solid_pattern (surface, pattern);
      if (status)
          return status;
      break;

    case CAIRO_PATTERN_TYPE_SURFACE:
      status = _cairo_win32_printing_surface_paint_surface_pattern (surface,
                                                                      (cairo_surface_pattern_t *) pattern);
      if (status)
          return status;
      break;

    case CAIRO_PATTERN_TYPE_LINEAR:
      status = _cairo_win32_printing_surface_paint_linear_pattern (surface, (cairo_linear_pattern_t *) pattern);
      if (status)
          return status;
      break;

    case CAIRO_PATTERN_TYPE_RADIAL:
      return CAIRO_INT_STATUS_UNSUPPORTED;
      break;
    }

    return CAIRO_STATUS_SUCCESS;
}

00979 typedef struct _win32_print_path_info {
    cairo_win32_surface_t *surface;
} win32_path_info_t;

static cairo_status_t
_cairo_win32_printing_surface_path_move_to (void *closure,
                                  const cairo_point_t *point)
{
    win32_path_info_t *path_info = closure;

    if (path_info->surface->has_ctm) {
      double x, y;

      x = _cairo_fixed_to_double (point->x);
      y = _cairo_fixed_to_double (point->y);
      cairo_matrix_transform_point (&path_info->surface->ctm, &x, &y);
      MoveToEx (path_info->surface->dc, (int) x, (int) y, NULL);
    } else {
      MoveToEx (path_info->surface->dc,
              _cairo_fixed_integer_part (point->x),
              _cairo_fixed_integer_part (point->y),
              NULL);
    }

    return CAIRO_STATUS_SUCCESS;
}

static cairo_status_t
_cairo_win32_printing_surface_path_line_to (void *closure,
                                  const cairo_point_t *point)
{
    win32_path_info_t *path_info = closure;

    path_info->surface->path_empty = FALSE;
    if (path_info->surface->has_ctm) {
      double x, y;

      x = _cairo_fixed_to_double (point->x);
      y = _cairo_fixed_to_double (point->y);
      cairo_matrix_transform_point (&path_info->surface->ctm, &x, &y);
      LineTo (path_info->surface->dc, (int) x, (int) y);
    } else {
      LineTo (path_info->surface->dc,
            _cairo_fixed_integer_part (point->x),
            _cairo_fixed_integer_part (point->y));
    }

    return CAIRO_STATUS_SUCCESS;
}

static cairo_status_t
_cairo_win32_printing_surface_path_curve_to (void          *closure,
                                             const cairo_point_t *b,
                                             const cairo_point_t *c,
                                             const cairo_point_t *d)
{
    win32_path_info_t *path_info = closure;
    POINT points[3];

    path_info->surface->path_empty = FALSE;
    if (path_info->surface->has_ctm) {
      double x, y;

      x = _cairo_fixed_to_double (b->x);
      y = _cairo_fixed_to_double (b->y);
      cairo_matrix_transform_point (&path_info->surface->ctm, &x, &y);
      points[0].x = (LONG) x;
      points[0].y = (LONG) y;

      x = _cairo_fixed_to_double (c->x);
      y = _cairo_fixed_to_double (c->y);
      cairo_matrix_transform_point (&path_info->surface->ctm, &x, &y);
      points[1].x = (LONG) x;
      points[1].y = (LONG) y;

      x = _cairo_fixed_to_double (d->x);
      y = _cairo_fixed_to_double (d->y);
      cairo_matrix_transform_point (&path_info->surface->ctm, &x, &y);
      points[2].x = (LONG) x;
      points[2].y = (LONG) y;
    } else {
      points[0].x = _cairo_fixed_integer_part (b->x);
      points[0].y = _cairo_fixed_integer_part (b->y);
      points[1].x = _cairo_fixed_integer_part (c->x);
      points[1].y = _cairo_fixed_integer_part (c->y);
      points[2].x = _cairo_fixed_integer_part (d->x);
      points[2].y = _cairo_fixed_integer_part (d->y);
    }
    PolyBezierTo (path_info->surface->dc, points, 3);

    return CAIRO_STATUS_SUCCESS;
}

static cairo_status_t
_cairo_win32_printing_surface_path_close_path (void *closure)
{
    win32_path_info_t *path_info = closure;

    CloseFigure (path_info->surface->dc);

    return CAIRO_STATUS_SUCCESS;
}

static cairo_status_t
_cairo_win32_printing_surface_emit_path (cairo_win32_surface_t *surface,
                                         cairo_path_fixed_t    *path)
{
    win32_path_info_t path_info;

    path_info.surface = surface;
    return _cairo_path_fixed_interpret (path,
                              CAIRO_DIRECTION_FORWARD,
                              _cairo_win32_printing_surface_path_move_to,
                              _cairo_win32_printing_surface_path_line_to,
                              _cairo_win32_printing_surface_path_curve_to,
                              _cairo_win32_printing_surface_path_close_path,
                              &path_info);
}

static cairo_int_status_t
_cairo_win32_printing_surface_show_page (void *abstract_surface)
{
    cairo_win32_surface_t *surface = abstract_surface;

    /* Undo both SaveDC's that we did in start_page */
    RestoreDC (surface->dc, -2);

    return CAIRO_STATUS_SUCCESS;
}

static cairo_status_t
_cairo_win32_printing_surface_clipper_intersect_clip_path (cairo_surface_clipper_t *clipper,
                                                   cairo_path_fixed_t *path,
                                                   cairo_fill_rule_t   fill_rule,
                                                   double          tolerance,
                                                   cairo_antialias_t   antialias)
{
    cairo_win32_surface_t *surface = cairo_container_of (clipper,
                                           cairo_win32_surface_t,
                                           clipper);
    cairo_status_t status;

    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE)
      return CAIRO_STATUS_SUCCESS;

    if (path == NULL) {
      RestoreDC (surface->dc, -1);
      SaveDC (surface->dc);

      return CAIRO_STATUS_SUCCESS;
    }

    BeginPath (surface->dc);
    status = _cairo_win32_printing_surface_emit_path (surface, path);
    EndPath (surface->dc);

    switch (fill_rule) {
    case CAIRO_FILL_RULE_WINDING:
      SetPolyFillMode (surface->dc, WINDING);
      break;
    case CAIRO_FILL_RULE_EVEN_ODD:
      SetPolyFillMode (surface->dc, ALTERNATE);
      break;
    default:
      ASSERT_NOT_REACHED;
    }

    SelectClipPath (surface->dc, RGN_AND);

    return status;
}

static void
_cairo_win32_printing_surface_get_font_options (void                  *abstract_surface,
                                                cairo_font_options_t  *options)
{
    _cairo_font_options_init_default (options);

    cairo_font_options_set_hint_style (options, CAIRO_HINT_STYLE_NONE);
    cairo_font_options_set_hint_metrics (options, CAIRO_HINT_METRICS_OFF);
    cairo_font_options_set_antialias (options, CAIRO_ANTIALIAS_GRAY);
}

static cairo_int_status_t
_cairo_win32_printing_surface_paint (void             *abstract_surface,
                                     cairo_operator_t        op,
                                     const cairo_pattern_t  *source,
                             cairo_clip_t      *clip)
{
    cairo_win32_surface_t *surface = abstract_surface;
    cairo_solid_pattern_t clear;
    cairo_status_t status;

    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
    if (status)
      return status;

    if (op == CAIRO_OPERATOR_CLEAR) {
      _cairo_win32_printing_surface_init_clear_color (surface, &clear);
      source = (cairo_pattern_t*) &clear;
      op = CAIRO_OPERATOR_SOURCE;
    }

    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE)
      return _cairo_win32_printing_surface_analyze_operation (surface, op, source);

    assert (_cairo_win32_printing_surface_operation_supported (surface, op, source));

    return _cairo_win32_printing_surface_paint_pattern (surface, source);
}

static int
_cairo_win32_line_cap (cairo_line_cap_t cap)
{
    switch (cap) {
    case CAIRO_LINE_CAP_BUTT:
      return PS_ENDCAP_FLAT;
    case CAIRO_LINE_CAP_ROUND:
      return PS_ENDCAP_ROUND;
    case CAIRO_LINE_CAP_SQUARE:
      return PS_ENDCAP_SQUARE;
    default:
      ASSERT_NOT_REACHED;
      return 0;
    }
}

static int
_cairo_win32_line_join (cairo_line_join_t join)
{
    switch (join) {
    case CAIRO_LINE_JOIN_MITER:
      return PS_JOIN_MITER;
    case CAIRO_LINE_JOIN_ROUND:
      return PS_JOIN_ROUND;
    case CAIRO_LINE_JOIN_BEVEL:
      return PS_JOIN_BEVEL;
    default:
      ASSERT_NOT_REACHED;
      return 0;
    }
}

static void
_cairo_matrix_factor_out_scale (cairo_matrix_t *m, double *scale)
{
    double s;

    s = fabs (m->xx);
    if (fabs (m->xy) > s)
      s = fabs (m->xy);
    if (fabs (m->yx) > s)
      s = fabs (m->yx);
    if (fabs (m->yy) > s)
      s = fabs (m->yy);
    *scale = s;
    s = 1.0/s;
    cairo_matrix_scale (m, s, s);
}

static cairo_int_status_t
_cairo_win32_printing_surface_stroke (void                  *abstract_surface,
                                      cairo_operator_t             op,
                                      const cairo_pattern_t *source,
                                      cairo_path_fixed_t    *path,
                                      const cairo_stroke_style_t *style,
                                      const cairo_matrix_t  *stroke_ctm,
                                      const cairo_matrix_t  *stroke_ctm_inverse,
                                      double                tolerance,
                                      cairo_antialias_t           antialias,
                              cairo_clip_t    *clip)
{
    cairo_win32_surface_t *surface = abstract_surface;
    cairo_int_status_t status;
    HPEN pen;
    LOGBRUSH brush;
    COLORREF color;
    XFORM xform;
    DWORD pen_style;
    DWORD *dash_array;
    HGDIOBJ obj;
    unsigned int i;
    cairo_solid_pattern_t clear;
    cairo_matrix_t mat;
    double scale;

    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
    if (status)
      return status;

    if (op == CAIRO_OPERATOR_CLEAR) {
      _cairo_win32_printing_surface_init_clear_color (surface, &clear);
      source = (cairo_pattern_t*) &clear;
      op = CAIRO_OPERATOR_SOURCE;
    }

    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
      /* Win32 does not support a dash offset. */
      if (style->num_dashes > 0 && style->dash_offset != 0.0)
          return CAIRO_INT_STATUS_UNSUPPORTED;

      return _cairo_win32_printing_surface_analyze_operation (surface, op, source);
    }

    assert (_cairo_win32_printing_surface_operation_supported (surface, op, source));
    assert (!(style->num_dashes > 0 && style->dash_offset != 0.0));

    cairo_matrix_multiply (&mat, stroke_ctm, &surface->ctm);
    _cairo_matrix_factor_out_scale (&mat, &scale);

    pen_style = PS_GEOMETRIC;
    dash_array = NULL;
    if (style->num_dashes) {
      pen_style |= PS_USERSTYLE;
      dash_array = calloc (sizeof (DWORD), style->num_dashes);
      for (i = 0; i < style->num_dashes; i++) {
          dash_array[i] = (DWORD) (scale * style->dash[i]);
      }
    } else {
      pen_style |= PS_SOLID;
    }

    SetMiterLimit (surface->dc, (FLOAT) (style->miter_limit), NULL);
    if (source->type == CAIRO_PATTERN_TYPE_SOLID) {
      cairo_solid_pattern_t *solid = (cairo_solid_pattern_t *) source;


      color = _cairo_win32_printing_surface_flatten_transparency (surface,
                                                    &solid->color);
    } else {
      /* Color not used as the pen will only be used by WidenPath() */
      color = RGB (0,0,0);
    }
    brush.lbStyle = BS_SOLID;
    brush.lbColor = color;
    brush.lbHatch = 0;
    pen_style |= _cairo_win32_line_cap (style->line_cap);
    pen_style |= _cairo_win32_line_join (style->line_join);
    pen = ExtCreatePen(pen_style,
                   scale * style->line_width,
                   &brush,
                   style->num_dashes,
                   dash_array);
    if (pen == NULL)
      return _cairo_win32_print_gdi_error ("_win32_surface_stroke:ExtCreatePen");
    obj = SelectObject (surface->dc, pen);
    if (obj == NULL)
      return _cairo_win32_print_gdi_error ("_win32_surface_stroke:SelectObject");

    BeginPath (surface->dc);
    status = _cairo_win32_printing_surface_emit_path (surface, path);
    EndPath (surface->dc);
    if (status)
      return status;

    /*
     * Switch to user space to set line parameters
     */
    SaveDC (surface->dc);

    _cairo_matrix_to_win32_xform (&mat, &xform);
    xform.eDx = 0.0f;
    xform.eDy = 0.0f;

    if (!ModifyWorldTransform (surface->dc, &xform, MWT_LEFTMULTIPLY))
      return _cairo_win32_print_gdi_error ("_win32_surface_stroke:SetWorldTransform");

    if (source->type == CAIRO_PATTERN_TYPE_SOLID) {
      StrokePath (surface->dc);
    } else {
      if (!WidenPath (surface->dc))
          return _cairo_win32_print_gdi_error ("_win32_surface_stroke:WidenPath");
      if (!SelectClipPath (surface->dc, RGN_AND))
          return _cairo_win32_print_gdi_error ("_win32_surface_stroke:SelectClipPath");

      /* Return to device space to paint the pattern */
      _cairo_matrix_to_win32_xform (&surface->gdi_ctm, &xform);
      if (!SetWorldTransform (surface->dc, &xform))
          return _cairo_win32_print_gdi_error ("_win32_surface_stroke:ModifyWorldTransform");
      status = _cairo_win32_printing_surface_paint_pattern (surface, source);
    }
    RestoreDC (surface->dc, -1);
    DeleteObject (pen);
    if (dash_array)
      free (dash_array);

    return status;
}

static cairo_int_status_t
_cairo_win32_printing_surface_fill (void                *abstract_surface,
                            cairo_operator_t           op,
                            const cairo_pattern_t     *source,
                            cairo_path_fixed_t        *path,
                            cairo_fill_rule_t          fill_rule,
                            double               tolerance,
                            cairo_antialias_t          antialias,
                            cairo_clip_t        *clip)
{
    cairo_win32_surface_t *surface = abstract_surface;
    cairo_int_status_t status;
    cairo_solid_pattern_t clear;

    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
    if (status)
      return status;

    if (op == CAIRO_OPERATOR_CLEAR) {
      _cairo_win32_printing_surface_init_clear_color (surface, &clear);
      source = (cairo_pattern_t*) &clear;
      op = CAIRO_OPERATOR_SOURCE;
    }

    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE)
      return _cairo_win32_printing_surface_analyze_operation (surface, op, source);

    assert (_cairo_win32_printing_surface_operation_supported (surface, op, source));

    surface->path_empty = TRUE;
    BeginPath (surface->dc);
    status = _cairo_win32_printing_surface_emit_path (surface, path);
    EndPath (surface->dc);

    switch (fill_rule) {
    case CAIRO_FILL_RULE_WINDING:
      SetPolyFillMode (surface->dc, WINDING);
      break;
    case CAIRO_FILL_RULE_EVEN_ODD:
      SetPolyFillMode (surface->dc, ALTERNATE);
      break;
    default:
      ASSERT_NOT_REACHED;
    }

    if (source->type == CAIRO_PATTERN_TYPE_SOLID) {
      status = _cairo_win32_printing_surface_select_solid_brush (surface, source);
      if (status)
          return status;

      FillPath (surface->dc);
      _cairo_win32_printing_surface_done_solid_brush (surface);
    } else if (surface->path_empty == FALSE) {
      SaveDC (surface->dc);
      SelectClipPath (surface->dc, RGN_AND);
      status = _cairo_win32_printing_surface_paint_pattern (surface, source);
      RestoreDC (surface->dc, -1);
    }

    fflush(stderr);

    return status;
}

static cairo_int_status_t
_cairo_win32_printing_surface_show_glyphs (void                 *abstract_surface,
                                           cairo_operator_t  op,
                                           const cairo_pattern_t *source,
                                           cairo_glyph_t        *glyphs,
                                           int               num_glyphs,
                                           cairo_scaled_font_t  *scaled_font,
                                 cairo_clip_t         *clip,
                                 int                  *remaining_glyphs)
{
    cairo_win32_surface_t *surface = abstract_surface;
    cairo_status_t status = CAIRO_STATUS_SUCCESS;
    cairo_scaled_glyph_t *scaled_glyph;
    cairo_pattern_t *opaque = NULL;
    int i;
    cairo_matrix_t old_ctm;
    cairo_bool_t old_has_ctm;
    cairo_solid_pattern_t clear;

    status = _cairo_surface_clipper_set_clip (&surface->clipper, clip);
    if (status)
      return status;

    if (op == CAIRO_OPERATOR_CLEAR) {
      _cairo_win32_printing_surface_init_clear_color (surface, &clear);
      source = (cairo_pattern_t*) &clear;
      op = CAIRO_OPERATOR_SOURCE;
    }

    if (surface->paginated_mode == CAIRO_PAGINATED_MODE_ANALYZE) {
      /* When printing bitmap fonts to a printer DC, Windows may
       * substitute an outline font for bitmap font. As the win32
       * font backend always uses a screen DC when obtaining the
       * font metrics the metrics of the substituted font will not
       * match the metrics that the win32 font backend returns.
       *
       * If we are printing a bitmap font, use fallback images to
       * ensure the font is not substituted.
       */
#if CAIRO_HAS_WIN32_FONT
      if (cairo_scaled_font_get_type (scaled_font) == CAIRO_FONT_TYPE_WIN32) {
          if (_cairo_win32_scaled_font_is_bitmap (scaled_font))
            return CAIRO_INT_STATUS_UNSUPPORTED;
          else
            return _cairo_win32_printing_surface_analyze_operation (surface, op, source);
      }
#endif

      /* For non win32 fonts we need to check that each glyph has a
       * path available. If a path is not available,
       * _cairo_scaled_glyph_lookup() will return
       * CAIRO_INT_STATUS_UNSUPPORTED and a fallback image will be
       * used.
       */
      for (i = 0; i < num_glyphs; i++) {
          status = _cairo_scaled_glyph_lookup (scaled_font,
                                     glyphs[i].index,
                                     CAIRO_SCALED_GLYPH_INFO_PATH,
                                     &scaled_glyph);
          if (status)
            return status;
      }

      return _cairo_win32_printing_surface_analyze_operation (surface, op, source);
    }

    if (source->type == CAIRO_PATTERN_TYPE_SOLID) {
      cairo_solid_pattern_t *solid = (cairo_solid_pattern_t *) source;
      COLORREF color;

      color = _cairo_win32_printing_surface_flatten_transparency (surface,
                                                    &solid->color);
      opaque = cairo_pattern_create_rgb (GetRValue (color) / 255.0,
                                 GetGValue (color) / 255.0,
                                 GetBValue (color) / 255.0);
      if (opaque->status)
          return opaque->status;
      source = opaque;
    }

#if CAIRO_HAS_WIN32_FONT
    if (cairo_scaled_font_get_type (scaled_font) == CAIRO_FONT_TYPE_WIN32 &&
      source->type == CAIRO_PATTERN_TYPE_SOLID)
    {
      cairo_matrix_t ctm;
      cairo_glyph_t  *type1_glyphs = NULL;
      cairo_scaled_font_subsets_glyph_t subset_glyph;

      /* Calling ExtTextOutW() with ETO_GLYPH_INDEX and a Type 1
       * font on a printer DC prints garbled text. The text displays
       * correctly on a display DC. When using a printer
       * DC, ExtTextOutW() only works with characters and not glyph
       * indices.
       *
       * For Type 1 fonts the glyph indices are converted back to
       * unicode characters before calling _cairo_win32_surface_show_glyphs().
       *
       * As _cairo_win32_scaled_font_index_to_ucs4() is a slow
       * operation, the font subsetting function
       * _cairo_scaled_font_subsets_map_glyph() is used to obtain
       * the unicode value because it caches the reverse mapping in
       * the subsets.
       */
      if (_cairo_win32_scaled_font_is_type1 (scaled_font)) {
          type1_glyphs = _cairo_malloc_ab (num_glyphs, sizeof (cairo_glyph_t));
          if (type1_glyphs == NULL)
            return _cairo_error (CAIRO_STATUS_NO_MEMORY);

          memcpy (type1_glyphs, glyphs, num_glyphs * sizeof (cairo_glyph_t));
          for (i = 0; i < num_glyphs; i++) {
            status = _cairo_scaled_font_subsets_map_glyph (surface->font_subsets,
                                                 scaled_font,
                                                 type1_glyphs[i].index,
                                                 NULL, 0,
                                                 &subset_glyph);
            if (status)
                return status;

            type1_glyphs[i].index = subset_glyph.unicode;
          }
          glyphs = type1_glyphs;
      }

      if (surface->has_ctm || surface->has_gdi_ctm) {
          cairo_matrix_multiply (&ctm, &surface->ctm, &surface->gdi_ctm);
          for (i = 0; i < num_glyphs; i++)
            cairo_matrix_transform_point (&ctm, &glyphs[i].x, &glyphs[i].y);
          cairo_matrix_multiply (&ctm, &scaled_font->ctm, &ctm);
          scaled_font = cairo_scaled_font_create (scaled_font->font_face,
                                        &scaled_font->font_matrix,
                                        &ctm,
                                        &scaled_font->options);
      }
      status = _cairo_win32_surface_show_glyphs (surface, op,
                                       source, glyphs,
                                       num_glyphs, scaled_font,
                                       clip,
                                       remaining_glyphs);
      if (surface->has_ctm)
          cairo_scaled_font_destroy (scaled_font);

      if (type1_glyphs != NULL)
          free (type1_glyphs);

      return status;
    }
#endif

    SaveDC (surface->dc);
    old_ctm = surface->ctm;
    old_has_ctm = surface->has_ctm;
    surface->has_ctm = TRUE;
    surface->path_empty = TRUE;
    BeginPath (surface->dc);
    for (i = 0; i < num_glyphs; i++) {
      status = _cairo_scaled_glyph_lookup (scaled_font,
                                   glyphs[i].index,
                                   CAIRO_SCALED_GLYPH_INFO_PATH,
                                   &scaled_glyph);
      if (status)
          break;
      surface->ctm = old_ctm;
      cairo_matrix_translate (&surface->ctm, glyphs[i].x, glyphs[i].y);
      status = _cairo_win32_printing_surface_emit_path (surface, scaled_glyph->path);
    }
    EndPath (surface->dc);
    surface->ctm = old_ctm;
    surface->has_ctm = old_has_ctm;
    if (status == CAIRO_STATUS_SUCCESS && surface->path_empty == FALSE) {
      if (source->type == CAIRO_PATTERN_TYPE_SOLID) {
          status = _cairo_win32_printing_surface_select_solid_brush (surface, source);
          if (status)
            return status;

          SetPolyFillMode (surface->dc, WINDING);
          FillPath (surface->dc);
          _cairo_win32_printing_surface_done_solid_brush (surface);
      } else {
          SelectClipPath (surface->dc, RGN_AND);
          status = _cairo_win32_printing_surface_paint_pattern (surface, source);
      }
    }
    RestoreDC (surface->dc, -1);

    if (opaque)
      cairo_pattern_destroy (opaque);

    return status;
}

static cairo_surface_t *
_cairo_win32_printing_surface_create_similar (void          *abstract_surface,
                                    cairo_content_t    content,
                                    int          width,
                                    int          height)
{
    cairo_rectangle_t extents;

    extents.x = extents.y = 0;
    extents.width  = width;
    extents.height = height;
    return cairo_recording_surface_create (content, &extents);
}

static cairo_int_status_t
_cairo_win32_printing_surface_start_page (void *abstract_surface)
{
    cairo_win32_surface_t *surface = abstract_surface;
    XFORM xform;
    double x_res, y_res;
    cairo_matrix_t inverse_ctm;
    cairo_status_t status;

    SaveDC (surface->dc); /* Save application context first, before doing MWT */

    /* As the logical coordinates used by GDI functions (eg LineTo)
     * are integers we need to do some additional work to prevent
     * rounding errors. For example the obvious way to paint a recording
     * pattern is to:
     *
     *   SaveDC()
     *   transform the device context DC by the pattern to device matrix
     *   replay the recording surface
     *   RestoreDC()
     *
     * The problem here is that if the pattern to device matrix is
     * [100 0 0 100 0 0], coordinates in the recording pattern such as
     * (1.56, 2.23) which correspond to (156, 223) in device space
     * will be rounded to (100, 200) due to (1.56, 2.23) being
     * truncated to integers.
     *
     * This is solved by saving the current GDI CTM in surface->ctm,
     * switch the GDI CTM to identity, and transforming all
     * coordinates by surface->ctm before passing them to GDI. When
     * painting a recording pattern, surface->ctm is transformed by the
     * pattern to device matrix.
     *
     * For printing device contexts where 1 unit is 1 dpi, switching
     * the GDI CTM to identity maximises the possible resolution of
     * coordinates.
     *
     * If the device context is an EMF file, using an identity
     * transform often provides insufficent resolution. The workaround
     * is to set the GDI CTM to a scale < 1 eg [1.0/16 0 0 1/0/16 0 0]
     * and scale the cairo CTM by [16 0 0 16 0 0]. The
     * SetWorldTransform function call to scale the GDI CTM by 1.0/16
     * will be recorded in the EMF followed by all the graphics
     * functions by their coordinateds multiplied by 16.
     *
     * To support allowing the user to set a GDI CTM with scale < 1,
     * we avoid switching to an identity CTM if the CTM xx and yy is < 1.
     */
    SetGraphicsMode (surface->dc, GM_ADVANCED);
    GetWorldTransform(surface->dc, &xform);
    if (xform.eM11 < 1 && xform.eM22 < 1) {
      cairo_matrix_init_identity (&surface->ctm);
      surface->gdi_ctm.xx = xform.eM11;
      surface->gdi_ctm.xy = xform.eM21;
      surface->gdi_ctm.yx = xform.eM12;
      surface->gdi_ctm.yy = xform.eM22;
      surface->gdi_ctm.x0 = xform.eDx;
      surface->gdi_ctm.y0 = xform.eDy;
    } else {
      surface->ctm.xx = xform.eM11;
      surface->ctm.xy = xform.eM21;
      surface->ctm.yx = xform.eM12;
      surface->ctm.yy = xform.eM22;
      surface->ctm.x0 = xform.eDx;
      surface->ctm.y0 = xform.eDy;
      cairo_matrix_init_identity (&surface->gdi_ctm);
      if (!ModifyWorldTransform (surface->dc, NULL, MWT_IDENTITY))
          return _cairo_win32_print_gdi_error ("_cairo_win32_printing_surface_start_page:ModifyWorldTransform");
    }

    surface->has_ctm = !_cairo_matrix_is_identity (&surface->ctm);
    surface->has_gdi_ctm = !_cairo_matrix_is_identity (&surface->gdi_ctm);
    inverse_ctm = surface->ctm;
    status = cairo_matrix_invert (&inverse_ctm);
    if (status)
      return status;

    x_res = GetDeviceCaps (surface->dc, LOGPIXELSX);
    y_res = GetDeviceCaps (surface->dc, LOGPIXELSY);
    cairo_matrix_transform_distance (&inverse_ctm, &x_res, &y_res);
    _cairo_surface_set_resolution (&surface->base, x_res, y_res);

    SaveDC (surface->dc); /* Then save Cairo's known-good clip state, so the clip path can be reset */

    return CAIRO_STATUS_SUCCESS;
}

static void
_cairo_win32_printing_surface_set_paginated_mode (void *abstract_surface,
                                                  cairo_paginated_mode_t paginated_mode)
{
    cairo_win32_surface_t *surface = abstract_surface;

    surface->paginated_mode = paginated_mode;
}

static cairo_bool_t
_cairo_win32_printing_surface_supports_fine_grained_fallbacks (void *abstract_surface)
{
    return TRUE;
}

/**
 * cairo_win32_printing_surface_create:
 * @hdc: the DC to create a surface for
 *
 * Creates a cairo surface that targets the given DC.  The DC will be
 * queried for its initial clip extents, and this will be used as the
 * size of the cairo surface.  The DC should be a printing DC;
 * antialiasing will be ignored, and GDI will be used as much as
 * possible to draw to the surface.
 *
 * The returned surface will be wrapped using the paginated surface to
 * provide correct complex rendering behaviour; show_page() and
 * associated methods must be used for correct output.
 *
 * Return value: the newly created surface
 *
 * Since: 1.6
 **/
cairo_surface_t *
cairo_win32_printing_surface_create (HDC hdc)
{
    cairo_win32_surface_t *surface;
    cairo_surface_t *paginated;
    RECT rect;

    surface = malloc (sizeof (cairo_win32_surface_t));
    if (surface == NULL)
      return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));

    if (_cairo_win32_save_initial_clip (hdc, surface) != CAIRO_STATUS_SUCCESS) {
      free (surface);
      return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
    }

    _cairo_surface_clipper_init (&surface->clipper,
                         _cairo_win32_printing_surface_clipper_intersect_clip_path);

    surface->image = NULL;
    surface->format = CAIRO_FORMAT_RGB24;
    surface->content = CAIRO_CONTENT_COLOR_ALPHA;

    surface->dc = hdc;
    surface->bitmap = NULL;
    surface->is_dib = FALSE;
    surface->saved_dc_bitmap = NULL;
    surface->brush = NULL;
    surface->old_brush = NULL;
    surface->font_subsets = _cairo_scaled_font_subsets_create_scaled ();
    if (surface->font_subsets == NULL) {
      free (surface);
      return _cairo_surface_create_in_error (_cairo_error (CAIRO_STATUS_NO_MEMORY));
    }

    GetClipBox(hdc, &rect);
    surface->extents.x = rect.left;
    surface->extents.y = rect.top;
    surface->extents.width = rect.right - rect.left;
    surface->extents.height = rect.bottom - rect.top;

    surface->flags = _cairo_win32_flags_for_dc (surface->dc);
    surface->flags |= CAIRO_WIN32_SURFACE_FOR_PRINTING;

    _cairo_win32_printing_surface_init_ps_mode (surface);
    _cairo_win32_printing_surface_init_image_support (surface);
    _cairo_win32_printing_surface_init_language_pack (surface);
    _cairo_surface_init (&surface->base,
                   &cairo_win32_printing_surface_backend,
                   NULL, /* device */
                         CAIRO_CONTENT_COLOR_ALPHA);

    paginated = _cairo_paginated_surface_create (&surface->base,
                                     CAIRO_CONTENT_COLOR_ALPHA,
                                     &cairo_win32_surface_paginated_backend);

    /* paginated keeps the only reference to surface now, drop ours */
    cairo_surface_destroy (&surface->base);

    return paginated;
}

cairo_bool_t
_cairo_surface_is_win32_printing (cairo_surface_t *surface)
{
    return surface->backend == &cairo_win32_printing_surface_backend;
}

static const cairo_surface_backend_t cairo_win32_printing_surface_backend = {
    CAIRO_SURFACE_TYPE_WIN32_PRINTING,
    _cairo_win32_printing_surface_create_similar,
    _cairo_win32_surface_finish,
    NULL, /* acquire_source_image */
    NULL, /* release_source_image */
    NULL, /* acquire_dest_image */
    NULL, /* release_dest_image */
    NULL, /* clone_similar */
    NULL, /* composite */
    NULL, /* fill_rectangles */
    NULL, /* composite_trapezoids */
    NULL, /* create_span_renderer */
    NULL, /* check_span_renderer */
    NULL, /* copy_page */
    _cairo_win32_printing_surface_show_page,
    _cairo_win32_surface_get_extents,
    NULL, /* old_show_glyphs */
    _cairo_win32_printing_surface_get_font_options,
    NULL, /* flush */
    NULL, /* mark_dirty_rectangle */
    NULL, /* scaled_font_fini */
    NULL, /* scaled_glyph_fini */

    _cairo_win32_printing_surface_paint,
    NULL, /* mask */
    _cairo_win32_printing_surface_stroke,
    _cairo_win32_printing_surface_fill,
    _cairo_win32_printing_surface_show_glyphs,
    NULL, /* snapshot */
    NULL, /* is_similar */
    NULL, /* fill_stroke */
};

static const cairo_paginated_surface_backend_t cairo_win32_surface_paginated_backend = {
    _cairo_win32_printing_surface_start_page,
    _cairo_win32_printing_surface_set_paginated_mode,
    NULL, /* set_bounding_box */
    NULL, /* _cairo_win32_printing_surface_has_fallback_images, */
    _cairo_win32_printing_surface_supports_fine_grained_fallbacks,
};

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