/* -*- 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 * Vladimir Vukicevic */ #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 #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; } 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, };