cairo_textlayout.cxx (07a3d7f1) cairo_textlayout.cxx (906a4e93)
1/**************************************************************
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance

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39#include <tools/postwin.h>
40#ifdef max
41#undef max
42#endif
43#ifdef min
44#undef min
45#endif
46#endif
1/**************************************************************
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance

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39#include <tools/postwin.h>
40#ifdef max
41#undef max
42#endif
43#ifdef min
44#undef min
45#endif
46#endif
47
48#ifdef OS2
49#define INCL_WIN
50#include <os2.h>
51#endif
52
47#include <vcl/sysdata.hxx>
48
49#include <basegfx/matrix/b2dhommatrix.hxx>
50#include <basegfx/numeric/ftools.hxx>
51
52#include <boost/scoped_array.hpp>
53
54#include "cairo_textlayout.hxx"
55#include "cairo_spritecanvas.hxx"
56
57#ifdef CAIRO_HAS_QUARTZ_SURFACE
58# include "cairo_quartz_cairo.hxx"
59#elif defined CAIRO_HAS_WIN32_SURFACE
60# include "cairo_win32_cairo.hxx"
61# include <cairo-win32.h>
62#elif defined CAIRO_HAS_XLIB_SURFACE
63# include "cairo_xlib_cairo.hxx"
64# include <cairo-ft.h>
53#include <vcl/sysdata.hxx>
54
55#include <basegfx/matrix/b2dhommatrix.hxx>
56#include <basegfx/numeric/ftools.hxx>
57
58#include <boost/scoped_array.hpp>
59
60#include "cairo_textlayout.hxx"
61#include "cairo_spritecanvas.hxx"
62
63#ifdef CAIRO_HAS_QUARTZ_SURFACE
64# include "cairo_quartz_cairo.hxx"
65#elif defined CAIRO_HAS_WIN32_SURFACE
66# include "cairo_win32_cairo.hxx"
67# include <cairo-win32.h>
68#elif defined CAIRO_HAS_XLIB_SURFACE
69# include "cairo_xlib_cairo.hxx"
70# include <cairo-ft.h>
71#elif defined CAIRO_HAS_OS2_SURFACE
72# include "cairo_os2_cairo.hxx"
73# include <cairo-os2.h>
65#else
66# error Native API needed.
67#endif
68
69using namespace ::cairo;
70using namespace ::com::sun::star;
71
72namespace cairocanvas

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466 const FontLevelVector::const_iterator aFontDataEnd = aFontData.end();
467 for( ; aFontDataIter != aFontDataEnd; ++aFontDataIter )
468 {
469 const SystemFontData &rSysFontData = aFontDataIter->first;
470
471 // setup glyphs
472 std::vector<cairo_glyph_t> cairo_glyphs;
473 cairo_glyphs.reserve( 256 );
74#else
75# error Native API needed.
76#endif
77
78using namespace ::cairo;
79using namespace ::com::sun::star;
80
81namespace cairocanvas

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475 const FontLevelVector::const_iterator aFontDataEnd = aFontData.end();
476 for( ; aFontDataIter != aFontDataEnd; ++aFontDataIter )
477 {
478 const SystemFontData &rSysFontData = aFontDataIter->first;
479
480 // setup glyphs
481 std::vector<cairo_glyph_t> cairo_glyphs;
482 cairo_glyphs.reserve( 256 );
474
483
475 SystemGlyphDataVector::const_iterator aIter=aSysLayoutData.rGlyphData.begin();
476 const SystemGlyphDataVector::const_iterator aEnd=aSysLayoutData.rGlyphData.end();
477 for( ; aIter != aEnd; ++aIter )
478 {
479 SystemGlyphData systemGlyph = *aIter;
480 if( systemGlyph.fallbacklevel != aFontDataIter->second )
481 continue;
482
483 cairo_glyph_t aGlyph;
484 aGlyph.index = systemGlyph.index;
485 #ifdef CAIRO_HAS_WIN32_SURFACE
486 // Cairo requires standard glyph indexes (ETO_GLYPH_INDEX), while vcl/win/* uses ucs4 chars.
487 // Convert to standard indexes
488 aGlyph.index = cairo::ucs4toindex((unsigned int) aGlyph.index, rSysFontData.hFont);
484 SystemGlyphDataVector::const_iterator aIter=aSysLayoutData.rGlyphData.begin();
485 const SystemGlyphDataVector::const_iterator aEnd=aSysLayoutData.rGlyphData.end();
486 for( ; aIter != aEnd; ++aIter )
487 {
488 SystemGlyphData systemGlyph = *aIter;
489 if( systemGlyph.fallbacklevel != aFontDataIter->second )
490 continue;
491
492 cairo_glyph_t aGlyph;
493 aGlyph.index = systemGlyph.index;
494 #ifdef CAIRO_HAS_WIN32_SURFACE
495 // Cairo requires standard glyph indexes (ETO_GLYPH_INDEX), while vcl/win/* uses ucs4 chars.
496 // Convert to standard indexes
497 aGlyph.index = cairo::ucs4toindex((unsigned int) aGlyph.index, rSysFontData.hFont);
498 #elif defined(CAIRO_HAS_OS2_SURFACE)
499 // Cairo requires standard glyph indexes (ETO_GLYPH_INDEX), while vcl/os2/* uses codepage chars.
500 // Convert to standard indexes
501 ::rtl::OString aFontName = ::rtl::OUStringToOString(
502 rOutDev.GetFont().GetName(), RTL_TEXTENCODING_UTF8);
503 aGlyph.index = cairo::ucs4toindex((unsigned int) aGlyph.index, aFontName);
489 #endif
490 aGlyph.x = systemGlyph.x;
491 aGlyph.y = systemGlyph.y;
492 cairo_glyphs.push_back(aGlyph);
493 }
494
495 if (cairo_glyphs.empty())
496 continue;
504 #endif
505 aGlyph.x = systemGlyph.x;
506 aGlyph.y = systemGlyph.y;
507 cairo_glyphs.push_back(aGlyph);
508 }
509
510 if (cairo_glyphs.empty())
511 continue;
497
512
498 /**
499 * Setup font
500 **/
501 cairo_font_face_t* font_face = NULL;
502
503 #ifdef CAIRO_HAS_QUARTZ_SURFACE
504 // TODO: use cairo_quartz_font_face_create_for_cgfont(cgFont)
505 // when CGFont (Mac OS X 10.5 API) is provided by the AQUA VCL backend.

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511 #endif
512 // Note: cairo library uses logfont fallbacks when lfEscapement, lfOrientation and lfWidth are not zero.
513 // VCL always has non-zero value for lfWidth
514 font_face = cairo_win32_font_face_create_for_hfont(rSysFontData.hFont);
515
516 #elif defined CAIRO_HAS_XLIB_SURFACE
517 font_face = cairo_ft_font_face_create_for_ft_face((FT_Face)rSysFontData.nFontId,
518 rSysFontData.nFontFlags);
513 /**
514 * Setup font
515 **/
516 cairo_font_face_t* font_face = NULL;
517
518 #ifdef CAIRO_HAS_QUARTZ_SURFACE
519 // TODO: use cairo_quartz_font_face_create_for_cgfont(cgFont)
520 // when CGFont (Mac OS X 10.5 API) is provided by the AQUA VCL backend.

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526 #endif
527 // Note: cairo library uses logfont fallbacks when lfEscapement, lfOrientation and lfWidth are not zero.
528 // VCL always has non-zero value for lfWidth
529 font_face = cairo_win32_font_face_create_for_hfont(rSysFontData.hFont);
530
531 #elif defined CAIRO_HAS_XLIB_SURFACE
532 font_face = cairo_ft_font_face_create_for_ft_face((FT_Face)rSysFontData.nFontId,
533 rSysFontData.nFontFlags);
534 #elif defined CAIRO_HAS_OS2_SURFACE
535 // see below
519 #else
520 # error Native API needed.
521 #endif
522
523 CairoSharedPtr pSCairo = pSurface->getCairo();
536 #else
537 # error Native API needed.
538 #endif
539
540 CairoSharedPtr pSCairo = pSurface->getCairo();
524
525 cairo_set_font_face( pSCairo.get(), font_face);
526
541
542 #if defined CAIRO_HAS_OS2_SURFACE
543 ::rtl::OString aFontName = ::rtl::OUStringToOString(
544 rOutDev.GetFont().GetName(), RTL_TEXTENCODING_UTF8);
545 cairo_font_slant_t slant = (rOutDev.GetFont().GetItalic() == ITALIC_NONE ?
546 CAIRO_FONT_SLANT_NORMAL : CAIRO_FONT_SLANT_ITALIC);
547 cairo_font_weight_t weight = (rOutDev.GetFont().GetWeight() == WEIGHT_NORMAL ?
548 CAIRO_FONT_WEIGHT_NORMAL : CAIRO_FONT_WEIGHT_BOLD);
549 cairo_select_font_face( pSCairo.get(), aFontName,
550 slant, weight);
551 #endif
552
553 if (font_face)
554 cairo_set_font_face( pSCairo.get(), font_face);
555
527 // create default font options. cairo_get_font_options() does not retrieve the surface defaults,
528 // only what has been set before with cairo_set_font_options()
529 cairo_font_options_t* options = cairo_font_options_create();
530 if (rSysFontData.bAntialias) {
531 // CAIRO_ANTIALIAS_GRAY provides more similar result to VCL Canvas,
532 // so we're not using CAIRO_ANTIALIAS_SUBPIXEL
533 cairo_font_options_set_antialias(options, CAIRO_ANTIALIAS_GRAY);
534 }

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589 #else
590 ::rtl::OUStringToOString( aFont.GetName(), RTL_TEXTENCODING_UTF8 ).getStr(),
591 #endif
592 ::rtl::OUStringToOString( maText.Text.copy( maText.StartPosition, maText.Length ),
593 RTL_TEXTENCODING_UTF8 ).getStr()
594 );
595
596 cairo_show_glyphs(pSCairo.get(), &cairo_glyphs[0], cairo_glyphs.size());
556 // create default font options. cairo_get_font_options() does not retrieve the surface defaults,
557 // only what has been set before with cairo_set_font_options()
558 cairo_font_options_t* options = cairo_font_options_create();
559 if (rSysFontData.bAntialias) {
560 // CAIRO_ANTIALIAS_GRAY provides more similar result to VCL Canvas,
561 // so we're not using CAIRO_ANTIALIAS_SUBPIXEL
562 cairo_font_options_set_antialias(options, CAIRO_ANTIALIAS_GRAY);
563 }

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618 #else
619 ::rtl::OUStringToOString( aFont.GetName(), RTL_TEXTENCODING_UTF8 ).getStr(),
620 #endif
621 ::rtl::OUStringToOString( maText.Text.copy( maText.StartPosition, maText.Length ),
622 RTL_TEXTENCODING_UTF8 ).getStr()
623 );
624
625 cairo_show_glyphs(pSCairo.get(), &cairo_glyphs[0], cairo_glyphs.size());
597
626
598 //faux bold
599 if (rSysFontData.bFakeBold) {
600 double bold_dx = 0.5 * sqrt( 0.7 * aFont.GetHeight() );
601 int total_steps = 2 * ((int) (bold_dx + 0.5));
602
603 // loop to draw the text for every half pixel of displacement
604 for (int nSteps = 0; nSteps < total_steps; nSteps++) {
605 for(int nGlyphIdx = 0; nGlyphIdx < (int) cairo_glyphs.size(); nGlyphIdx++) {
606 cairo_glyphs[nGlyphIdx].x += bold_dx * nSteps / total_steps;
607 }
608 cairo_show_glyphs(pSCairo.get(), &cairo_glyphs[0], cairo_glyphs.size());
609 }
610 OSL_TRACE(":cairocanvas::TextLayout::draw(S,O,p,v,r): FAKEBOLD - dx:%d", (int) bold_dx);
611 }
612
613 cairo_restore( pSCairo.get() );
627 //faux bold
628 if (rSysFontData.bFakeBold) {
629 double bold_dx = 0.5 * sqrt( 0.7 * aFont.GetHeight() );
630 int total_steps = 2 * ((int) (bold_dx + 0.5));
631
632 // loop to draw the text for every half pixel of displacement
633 for (int nSteps = 0; nSteps < total_steps; nSteps++) {
634 for(int nGlyphIdx = 0; nGlyphIdx < (int) cairo_glyphs.size(); nGlyphIdx++) {
635 cairo_glyphs[nGlyphIdx].x += bold_dx * nSteps / total_steps;
636 }
637 cairo_show_glyphs(pSCairo.get(), &cairo_glyphs[0], cairo_glyphs.size());
638 }
639 OSL_TRACE(":cairocanvas::TextLayout::draw(S,O,p,v,r): FAKEBOLD - dx:%d", (int) bold_dx);
640 }
641
642 cairo_restore( pSCairo.get() );
614 cairo_font_face_destroy(font_face);
643 if (font_face)
644 cairo_font_face_destroy(font_face);
615 }
616 return true;
617 }
618
619
620 namespace
621 {
622 class OffsetTransformer

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646 return true;
647 }
648
649
650 namespace
651 {
652 class OffsetTransformer

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