From a148cfb64451d6553cf66d1075b654e54e908210 Mon Sep 17 00:00:00 2001 From: Robert Roebling Date: Thu, 30 Jan 2003 23:40:05 +0000 Subject: [PATCH] Printing update for Pango (GTK2 and X11-Unicode). git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@19030 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775 --- src/generic/dcpsg.cpp | 161 ++++++++++++++++++++++++------------------ 1 file changed, 91 insertions(+), 70 deletions(-) diff --git a/src/generic/dcpsg.cpp b/src/generic/dcpsg.cpp index 37c085389a..2c78950e71 100644 --- a/src/generic/dcpsg.cpp +++ b/src/generic/dcpsg.cpp @@ -250,7 +250,7 @@ static char wxPostScriptHeaderReencodeISO2[] = IMPLEMENT_DYNAMIC_CLASS(wxPostScriptDC, wxDC) -float wxPostScriptDC::ms_PSScaleFactor = 10.0; +float wxPostScriptDC::ms_PSScaleFactor = 1.0; void wxPostScriptDC::SetResolution(int ppi) { @@ -969,6 +969,7 @@ void wxPostScriptDC::SetFont( const wxFont& font ) for (int i = 0; i < 100; i++) if (buffer[i] == ',') buffer[i] = '.'; fprintf( m_pstream, buffer ); + #endif } @@ -1197,8 +1198,8 @@ void draw_bezier_outline(FILE *file, FT_UInt glyph_index, int pos_x, int pos_y, - int scale_x, - int scale_y ) + double scale_x, + double scale_y ) { FT_Int load_flags = FT_LOAD_NO_BITMAP; FT_Glyph glyph; @@ -1216,16 +1217,20 @@ void draw_bezier_outline(FILE *file, fprintf(file, "gsave\n"); fprintf(file, "%d %d translate\n", pos_x, pos_y ); - // FT2 scales outlines to 26.6 pixels so the code below - // should read 26600 instead of the 60000. - fprintf(file, "%d 60000 div %d 60000 div scale\n", scale_x, scale_y ); - fprintf(file, "0 0 0 setrgbcolor\n"); + + // We have to replace the "," from the German + // locale with the Englich "." for PostScript + char buf[100]; + sprintf(buf, "%.8f %.8f scale\n", scale_x, scale_y ); + for (size_t i = 0; i < strlen(buf); i++) + if (buf[i] == ',') buf[i] = '.'; + fprintf(file, buf); FT_Load_Glyph(face, glyph_index, load_flags); FT_Get_Glyph (face->glyph, &glyph); FT_Outline_Decompose (&(((FT_OutlineGlyph)glyph)->outline), &outlinefunc, &outline_info); - fprintf(file, "closepath fill grestore \n"); + fprintf(file, "closepath fill grestore\n"); FT_Done_Glyph (glyph); } @@ -1236,10 +1241,53 @@ void wxPostScriptDC::DoDrawText( const wxString& text, wxCoord x, wxCoord y ) { wxCHECK_RET( m_ok && m_pstream, wxT("invalid postscript dc") ); + if (m_textForegroundColour.Ok()) + { + unsigned char red = m_textForegroundColour.Red(); + unsigned char blue = m_textForegroundColour.Blue(); + unsigned char green = m_textForegroundColour.Green(); + + if (!m_colour) + { + // Anything not white is black + if (! (red == (unsigned char) 255 && + blue == (unsigned char) 255 && + green == (unsigned char) 255)) + { + red = (unsigned char) 0; + green = (unsigned char) 0; + blue = (unsigned char) 0; + } + } + + // maybe setgray here ? + if (!(red == m_currentRed && green == m_currentGreen && blue == m_currentBlue)) + { + double redPS = (double)(red) / 255.0; + double bluePS = (double)(blue) / 255.0; + double greenPS = (double)(green) / 255.0; + + char buffer[100]; + sprintf( buffer, + "%.8f %.8f %.8f setrgbcolor\n", + redPS, greenPS, bluePS ); + for (size_t i = 0; i < strlen(buffer); i++) + if (buffer[i] == ',') buffer[i] = '.'; + fprintf( m_pstream, buffer ); + + m_currentRed = red; + m_currentBlue = blue; + m_currentGreen = green; + } + } + #if wxUSE_PANGO - int dpi = GetResolution(); - dpi = 300; - PangoContext *context = pango_ft2_get_context ( dpi, dpi ); + int ps_dpi = 72; + int pango_dpi = 600; + PangoContext *context = pango_ft2_get_context ( pango_dpi, pango_dpi ); + + double scale = (double)pango_dpi / (double)ps_dpi; + scale /= m_userScaleY; pango_context_set_language (context, pango_language_from_string ("en_US")); pango_context_set_base_dir (context, PANGO_DIRECTION_LTR ); @@ -1253,22 +1301,29 @@ void wxPostScriptDC::DoDrawText( const wxString& text, wxCoord x, wxCoord y ) wxCharBuffer buffer = wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) ); #endif pango_layout_set_text( layout, (const char*) buffer, strlen(buffer) ); + + fprintf( m_pstream, "%%%% %s\n", (const char*)buffer ); PangoRectangle rect; pango_layout_get_extents(layout, NULL, &rect); - int xx = x * PANGO_SCALE; - int yy = y * PANGO_SCALE + (rect.height*2/3); - - int scale_x = LogicalToDeviceXRel( 1000 ); - int scale_y = LogicalToDeviceYRel( 1000 ); + int xx = LogicalToDeviceX( x ); + int yy = LogicalToDeviceY( y ); + int xxx = xx * PANGO_SCALE; + int yyy = yy * PANGO_SCALE - (int)(rect.height * 0.66 / scale); // Move down by estimated baseline. HACK. + +#define ps_kludge_factor 2.8 + // Loop over lines in layout int num_lines = pango_layout_get_line_count( layout ); for (int i = 0; i < num_lines; i++) { PangoLayoutLine *line = pango_layout_get_line( layout, i ); + // width of glyphs already printed + int all_width = 0; + // Loop over runs in line GSList *runs_list = line->runs; while (runs_list) @@ -1284,21 +1339,23 @@ void wxPostScriptDC::DoDrawText( const wxString& text, wxCoord x, wxCoord y ) for (int glyph_idx = 0; glyph_idx < num_glyphs; glyph_idx++) { PangoGlyphGeometry geometry = glyphs->glyphs[glyph_idx].geometry; - int pos_x = xx + geometry.x_offset; - int pos_y = yy - geometry.y_offset; - xx += geometry.width; + int pos_x = xxx + (int)((double)(all_width+geometry.x_offset) / scale); + int pos_y = yyy + (int)((double)geometry.y_offset / scale ); + all_width += geometry.width; draw_bezier_outline( m_pstream, ft_face, (FT_UInt)(glyphs->glyphs[glyph_idx].glyph), - LogicalToDeviceX( pos_x / PANGO_SCALE ), - LogicalToDeviceY( pos_y / PANGO_SCALE ), - scale_x, scale_y ); + pos_x / PANGO_SCALE, + pos_y / PANGO_SCALE, + 1.0/(ps_kludge_factor * scale * 26.6), + 1.0/(ps_kludge_factor * scale * 26.6) ); } runs_list = runs_list->next; } } g_object_unref( G_OBJECT( layout ) ); + g_object_unref( G_OBJECT( context ) ); #else wxCoord text_w, text_h, text_descent; @@ -1308,45 +1365,6 @@ void wxPostScriptDC::DoDrawText( const wxString& text, wxCoord x, wxCoord y ) // doesn't create any problems, remove this comment entirely //SetFont( m_font ); - if (m_textForegroundColour.Ok()) - { - unsigned char red = m_textForegroundColour.Red(); - unsigned char blue = m_textForegroundColour.Blue(); - unsigned char green = m_textForegroundColour.Green(); - - if (!m_colour) - { - // Anything not white is black - if (! (red == (unsigned char) 255 && - blue == (unsigned char) 255 && - green == (unsigned char) 255)) - { - red = (unsigned char) 0; - green = (unsigned char) 0; - blue = (unsigned char) 0; - } - } - - // maybe setgray here ? - if (!(red == m_currentRed && green == m_currentGreen && blue == m_currentBlue)) - { - double redPS = (double)(red) / 255.0; - double bluePS = (double)(blue) / 255.0; - double greenPS = (double)(green) / 255.0; - - char buffer[100]; - sprintf( buffer, - "%.8f %.8f %.8f setrgbcolor\n", - redPS, greenPS, bluePS ); - for (int i = 0; i < 100; i++) - if (buffer[i] == ',') buffer[i] = '.'; - fprintf( m_pstream, buffer ); - - m_currentRed = red; - m_currentBlue = blue; - m_currentGreen = green; - } - } int size = m_font.GetPointSize(); @@ -1977,8 +1995,12 @@ void wxPostScriptDC::DoGetTextExtent(const wxString& string, } #if wxUSE_PANGO - int dpi = GetResolution(); - PangoContext *context = pango_ft2_get_context ( dpi, dpi ); + int wx_dpi = GetResolution(); + int pango_dpi = 600; + PangoContext *context = pango_ft2_get_context ( pango_dpi, pango_dpi ); + + double scale = pango_dpi / wx_dpi; + scale /= m_userScaleY; pango_context_set_language (context, pango_language_from_string ("en_US")); pango_context_set_base_dir (context, PANGO_DIRECTION_LTR ); @@ -1988,20 +2010,19 @@ void wxPostScriptDC::DoGetTextExtent(const wxString& string, PangoFontDescription *desc = fontToUse->GetNativeFontInfo()->description; pango_layout_set_font_description(layout, desc); #if wxUSE_UNICODE - const wxCharBuffer data = wxConvUTF8.cWC2MB( string ); - pango_layout_set_text(layout, (const char*) data, strlen( (const char*) data )); + const wxCharBuffer data = wxConvUTF8.cWC2MB( string ); #else - const wxWCharBuffer wdata = wxConvLocal.cMB2WC( string ); - const wxCharBuffer data = wxConvUTF8.cWC2MB( wdata ); - pango_layout_set_text(layout, (const char*) data, strlen( (const char*) data )); + const wxWCharBuffer wdata = wxConvLocal.cMB2WC( string ); + const wxCharBuffer data = wxConvUTF8.cWC2MB( wdata ); #endif + pango_layout_set_text(layout, (const char*) data, strlen( (const char*) data )); PangoLayoutLine *line = (PangoLayoutLine *)pango_layout_get_lines(layout)->data; PangoRectangle rect; pango_layout_line_get_extents(line, NULL, &rect); - if (x) (*x) = (wxCoord) ( m_scaleX * rect.width / PANGO_SCALE ); - if (y) (*y) = (wxCoord) ( m_scaleY * rect.height / PANGO_SCALE ); + if (x) (*x) = (wxCoord) ( rect.width / PANGO_SCALE / scale ); + if (y) (*y) = (wxCoord) ( rect.height / PANGO_SCALE / scale ); if (descent) { // Do something about metrics here -- 2.45.2