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Printing update for Pango (GTK2 and X11-Unicode).

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@19030 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling
2003-01-30 23:40:05 +00:00
parent 6b5cdfed73
commit a148cfb644
1 changed files with 111 additions and 90 deletions
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201
src/generic/dcpsg.cpp
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@@ -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);
}
@@ -1236,78 +1241,6 @@ void wxPostScriptDC::DoDrawText( const wxString& text, wxCoord x, wxCoord y )
{
wxCHECK_RET( m_ok && m_pstream, wxT("invalid postscript dc") );
#if wxUSE_PANGO
int dpi = GetResolution();
dpi = 300;
PangoContext *context = pango_ft2_get_context ( dpi, dpi );
pango_context_set_language (context, pango_language_from_string ("en_US"));
pango_context_set_base_dir (context, PANGO_DIRECTION_LTR );
pango_context_set_font_description (context, m_font.GetNativeFontInfo()->description );
PangoLayout *layout = pango_layout_new (context);
#if wxUSE_UNICODE
wxCharBuffer buffer = wxConvUTF8.cWC2MB( text );
#else
wxCharBuffer buffer = wxConvUTF8.cWC2MB( wxConvLocal.cWX2WC( text ) );
#endif
pango_layout_set_text( layout, (const char*) buffer, strlen(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 );
// 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 );
// Loop over runs in line
GSList *runs_list = line->runs;
while (runs_list)
{
PangoLayoutRun *run = (PangoLayoutRun*) runs_list->data;
PangoItem *item = run->item;
PangoGlyphString *glyphs = run->glyphs;
PangoAnalysis *analysis = &item->analysis;
PangoFont *font = analysis->font;
FT_Face ft_face = pango_ft2_font_get_face(font);
int num_glyphs = glyphs->num_glyphs;
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;
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 );
}
runs_list = runs_list->next;
}
}
g_object_unref( G_OBJECT( layout ) );
#else
wxCoord text_w, text_h, text_descent;
GetTextExtent(text, &text_w, &text_h, &text_descent);
// VZ: this seems to be unnecessary, so taking it out for now, if it
// doesn't create any problems, remove this comment entirely
//SetFont( m_font );
if (m_textForegroundColour.Ok())
{
unsigned char red = m_textForegroundColour.Red();
@@ -1338,7 +1271,7 @@ void wxPostScriptDC::DoDrawText( const wxString& text, wxCoord x, wxCoord y )
sprintf( buffer,
"%.8f %.8f %.8f setrgbcolor\n",
redPS, greenPS, bluePS );
for (int i = 0; i < 100; i++)
for (size_t i = 0; i < strlen(buffer); i++)
if (buffer[i] == ',') buffer[i] = '.';
fprintf( m_pstream, buffer );
@@ -1347,6 +1280,91 @@ void wxPostScriptDC::DoDrawText( const wxString& text, wxCoord x, wxCoord y )
m_currentGreen = green;
}
}
#if wxUSE_PANGO
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 );
pango_context_set_font_description (context, m_font.GetNativeFontInfo()->description );
PangoLayout *layout = pango_layout_new (context);
#if wxUSE_UNICODE
wxCharBuffer buffer = wxConvUTF8.cWC2MB( text );
#else
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 = 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)
{
PangoLayoutRun *run = (PangoLayoutRun*) runs_list->data;
PangoItem *item = run->item;
PangoGlyphString *glyphs = run->glyphs;
PangoAnalysis *analysis = &item->analysis;
PangoFont *font = analysis->font;
FT_Face ft_face = pango_ft2_font_get_face(font);
int num_glyphs = glyphs->num_glyphs;
for (int glyph_idx = 0; glyph_idx < num_glyphs; glyph_idx++)
{
PangoGlyphGeometry geometry = glyphs->glyphs[glyph_idx].geometry;
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),
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;
GetTextExtent(text, &text_w, &text_h, &text_descent);
// VZ: this seems to be unnecessary, so taking it out for now, if it
// doesn't create any problems, remove this comment entirely
//SetFont( m_font );
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