Added support for outlines printing under wxGTK. I still
have to figure out how to do scaling right, the current
values are guesswork.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@16393 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling
parent
8887e2341a
commit
c31c771b2d
@ -73,6 +73,25 @@
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// start and end of document/page
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//-----------------------------------------------------------------------------
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static const char *wxPostScriptHeaderConicTo = "\
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/conicto {\n\
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/to_y exch def\n\
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/to_x exch def\n\
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/conic_cntrl_y exch def\n\
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/conic_cntrl_x exch def\n\
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currentpoint\n\
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/p0_y exch def\n\
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/p0_x exch def\n\
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/p1_x p0_x conic_cntrl_x p0_x sub 2 3 div mul add def\n\
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/p1_y p0_y conic_cntrl_y p0_y sub 2 3 div mul add def\n\
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/p2_x p1_x to_x p0_x sub 1 3 div mul add def\n\
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/p2_y p1_y to_y p0_y sub 1 3 div mul add def\n\
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p1_x p1_y p2_x p2_y to_x to_y curveto\n\
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} bind def\n\
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/start_ol { gsave 1.0 72 div dup scale } bind def\n\
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/end_ol { closepath fill grestore } bind def\n\
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";
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static const char *wxPostScriptHeaderEllipse = "\
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/ellipsedict 8 dict def\n\
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ellipsedict /mtrx matrix put\n\
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@ -187,6 +206,7 @@ static const char *wxPostScriptHeaderColourImage = "\
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} ifelse %% end of 'false' case\n\
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";
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#ifndef __WXGTK20__
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static char wxPostScriptHeaderReencodeISO1[] =
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"\n/reencodeISO {\n"
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"dup dup findfont dup length dict begin\n"
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@ -227,6 +247,7 @@ static char wxPostScriptHeaderReencodeISO2[] =
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"/otilde/odieresis/divide/oslash/ugrave/uacute/ucircumflex/udieresis\n"
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"/yacute/thorn/ydieresis\n"
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"] def\n\n";
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#endif
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//-------------------------------------------------------------------------------
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// wxPostScriptDC
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@ -939,6 +960,7 @@ void wxPostScriptDC::SetFont( const wxFont& font )
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m_font = font;
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#ifndef __WXGTK20__
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int Style = m_font.GetStyle();
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int Weight = m_font.GetWeight();
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@ -1023,6 +1045,7 @@ void wxPostScriptDC::SetFont( const wxFont& font )
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for (int i = 0; i < 100; i++)
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if (buffer[i] == ',') buffer[i] = '.';
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fprintf( m_pstream, buffer );
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#endif
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}
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void wxPostScriptDC::SetPen( const wxPen& pen )
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@ -1174,6 +1197,110 @@ void wxPostScriptDC::SetBrush( const wxBrush& brush )
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#include "wx/fontutil.h"
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#include "gtk/gtk.h"
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#include <pango/pangoft2.h>
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#include <freetype/ftglyph.h>
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#ifndef FT_Outline_Decompose
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FT_EXPORT( FT_Error ) FT_Outline_Decompose(
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FT_Outline* outline,
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const FT_Outline_Funcs* interface,
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void* user );
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#endif
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typedef struct _OutlineInfo OutlineInfo;
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struct _OutlineInfo {
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FILE *OUT;
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FT_Vector glyph_origin;
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int dpi;
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};
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static int paps_move_to( FT_Vector* to,
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void *user_data)
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{
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OutlineInfo *outline_info = (OutlineInfo*)user_data;
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fprintf(outline_info->OUT, "%d %d moveto\n",
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(int)to->x ,
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(int)to->y );
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return 0;
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}
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static int paps_line_to( FT_Vector* to,
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void *user_data)
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{
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OutlineInfo *outline_info = (OutlineInfo*)user_data;
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fprintf(outline_info->OUT, "%d %d lineto\n",
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(int)to->x ,
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(int)to->y );
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return 0;
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}
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static int paps_conic_to( FT_Vector* control,
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FT_Vector* to,
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void *user_data)
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{
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OutlineInfo *outline_info = (OutlineInfo*)user_data;
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fprintf(outline_info->OUT, "%d %d %d %d conicto\n",
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(int)control->x ,
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(int)control->y ,
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(int)to->x ,
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(int)to->y );
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return 0;
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}
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static int paps_cubic_to( FT_Vector* control1,
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FT_Vector* control2,
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FT_Vector* to,
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void *user_data)
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{
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OutlineInfo *outline_info = (OutlineInfo*)user_data;
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fprintf(outline_info->OUT,
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"%d %d %d %d %d %d curveto\n",
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(int)control1->x ,
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(int)control1->y ,
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(int)control2->x ,
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(int)control2->y ,
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(int)to->x ,
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(int)to->y );
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return 0;
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}
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static void draw_bezier_outline(FILE *OUT,
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int dpi,
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FT_Face face,
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FT_UInt glyph_index,
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wxCoord pos_x,
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wxCoord pos_y
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)
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{
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FT_Int load_flags = FT_LOAD_DEFAULT;
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FT_Glyph glyph;
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/* Output outline */
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FT_Outline_Funcs outlinefunc =
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{
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paps_move_to,
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paps_line_to,
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paps_conic_to,
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paps_cubic_to
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};
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OutlineInfo outline_info;
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outline_info.glyph_origin.x = (FT_Pos) pos_x;
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outline_info.glyph_origin.y = (FT_Pos) pos_y;
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outline_info.dpi = dpi;
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outline_info.OUT = OUT;
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fprintf(OUT, "gsave %d %d translate 0 0 0 setrgbcolor\n", pos_x, pos_y);
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fprintf(OUT, "start_ol\n");
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FT_Load_Glyph(face, glyph_index, load_flags);
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FT_Get_Glyph (face->glyph, &glyph);
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FT_Outline_Decompose (&(((FT_OutlineGlyph)glyph)->outline),
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&outlinefunc, &outline_info);
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fprintf(OUT, "end_ol grestore \n");
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FT_Done_Glyph (glyph);
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}
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#endif
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@ -1182,8 +1309,9 @@ void wxPostScriptDC::DoDrawText( const wxString& text, wxCoord x, wxCoord y )
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wxCHECK_RET( m_ok && m_pstream, wxT("invalid postscript dc") );
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#ifdef __WXGTK20__
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int dpi = GetResolution() * 2;
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PangoContext *context = pango_ft2_get_context (300, 300);
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PangoContext *context = pango_ft2_get_context ( dpi, dpi );
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// What are these for?
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pango_context_set_language (context, pango_language_from_string ("en_US"));
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@ -1200,7 +1328,44 @@ void wxPostScriptDC::DoDrawText( const wxString& text, wxCoord x, wxCoord y )
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wxCharBuffer buffer = wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) );
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#endif
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pango_layout_set_text( layout, (const char*) buffer, strlen(buffer) );
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#if 1
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double xx = LogicalToDeviceX(x);
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double yy = LogicalToDeviceY(y /*+ bitmap.GetHeight()*/ );
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// Loop over lines in layout
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int num_lines = pango_layout_get_line_count( layout );
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for (int i = 0; i < num_lines; i++)
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{
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PangoLayoutLine *line = pango_layout_get_line( layout, i );
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// Loop over runs in line
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GSList *runs_list = line->runs;
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while (runs_list)
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{
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PangoLayoutRun *run = (PangoLayoutRun*) runs_list->data;
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PangoItem *item = run->item;
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PangoGlyphString *glyphs = run->glyphs;
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PangoAnalysis *analysis = &item->analysis;
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PangoFont *font = analysis->font;
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FT_Face ft_face = pango_ft2_font_get_face(font);
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int num_glyphs = glyphs->num_glyphs;
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for (int glyph_idx = 0; glyph_idx < num_glyphs; glyph_idx++)
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{
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PangoGlyphGeometry geometry = glyphs->glyphs[glyph_idx].geometry;
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double pos_x = xx + 1.0 * geometry.x_offset / PANGO_SCALE;
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double pos_y = yy - 1.0 * geometry.y_offset / PANGO_SCALE;
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xx += 1.0 * geometry.width / PANGO_SCALE;
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draw_bezier_outline( m_pstream, dpi, ft_face,
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(FT_UInt)(glyphs->glyphs[glyph_idx].glyph),
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(wxCoord)pos_x, (wxCoord)pos_y );
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}
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runs_list = runs_list->next;
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}
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}
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#else
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// Find out extent for the bitmap
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int height = 0;
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int width = 0;
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@ -1266,16 +1431,14 @@ void wxPostScriptDC::DoDrawText( const wxString& text, wxCoord x, wxCoord y )
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guchar this_bit = bitmap.buffer[b_idx * 8+bit_idx]<128;
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packed_b = (packed_b << 1) + this_bit;
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}
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fprintf(m_pstream, "%02x", packed_b);
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}
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fprintf(m_pstream, "\ngrestore\n" );
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// Free memory
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g_free( buf );
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#endif
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#else
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wxCoord text_w, text_h, text_descent;
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@ -1698,11 +1861,14 @@ bool wxPostScriptDC::StartDoc( const wxString& message )
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m_ok = TRUE;
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fprintf( m_pstream, "%%%%BeginProlog\n" );
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fprintf( m_pstream, wxPostScriptHeaderConicTo );
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fprintf( m_pstream, wxPostScriptHeaderEllipse );
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fprintf( m_pstream, wxPostScriptHeaderEllipticArc );
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fprintf( m_pstream, wxPostScriptHeaderColourImage );
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#ifndef __WXGTK20__
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fprintf( m_pstream, wxPostScriptHeaderReencodeISO1 );
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fprintf( m_pstream, wxPostScriptHeaderReencodeISO2 );
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#endif
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if (wxPostScriptHeaderSpline)
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fprintf( m_pstream, wxPostScriptHeaderSpline );
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fprintf( m_pstream, "%%%%EndProlog\n" );
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