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Fourth try to add pang_x.cpp

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@17779 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling
2002-11-09 15:48:44 +00:00
parent 3049550ceb
commit 01598df990
1 changed files with 276 additions and 0 deletions
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src/x11/pango_x.cpp Normal file
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/**
* This file gets included from dcclient.cpp and implements
* the X11 interface to Pango.
* Copyright (C) Owen Taylor and Robert Roebling.
*/
/* Declaration */
void
x11_draw_glyphs( Drawable drawable,
GC gc,
PangoFont *font,
int x,
int y,
PangoGlyphString *glyphs);
void
x11_draw_layout_line_with_colors( Drawable drawable,
GC gc,
int x,
int y,
PangoLayoutLine *line,
XColor *foreground,
XColor *background);
void
x11_draw_layout_with_colors( Drawable drawable,
GC gc,
int x,
int y,
PangoLayout *layout,
XColor *foreground,
XColor *background);
void
x11_draw_layout( Drawable drawable,
GC gc,
int x,
int y,
PangoLayout *layout);
void
x11_pango_get_item_properties( PangoItem *item,
PangoUnderline *uline,
gboolean *strikethrough,
gint *rise,
PangoColor *fg_color,
gboolean *fg_set,
PangoColor *bg_color,
gboolean *bg_set,
gboolean *shape_set,
PangoRectangle *ink_rect,
PangoRectangle *logical_rect);
/* Implementation */
void
x11_draw_glyphs( Drawable drawable,
GC gc,
PangoFont *font,
int x,
int y,
PangoGlyphString *glyphs)
{
if (PANGO_XFT_IS_FONT (font))
{
pango_xft_picture_render( wxGlobalDisplay(), drawable, drawable, font, glyphs, x, y );
}
else
{
pango_x_render( wxGlobalDisplay(), drawable, gc, font, glyphs, x, y );
}
}
void
x11_draw_layout_line_with_colors( Drawable drawable,
GC gc,
int x,
int y,
PangoLayoutLine *line,
XColor *foreground,
XColor *background)
{
PangoRectangle overall_rect;
PangoRectangle logical_rect;
PangoRectangle ink_rect;
PangoContext *context;
gint x_off = 0;
gint rise = 0;
context = pango_layout_get_context (line->layout);
pango_layout_line_get_extents (line,NULL, &overall_rect);
GSList *tmp_list = line->runs;
while (tmp_list)
{
PangoUnderline uline = PANGO_UNDERLINE_NONE;
PangoLayoutRun *run = (PangoLayoutRun *) tmp_list->data;
PangoColor fg_color, bg_color;
gboolean strike, fg_set, bg_set, shape_set;
gint risen_y;
tmp_list = tmp_list->next;
x11_pango_get_item_properties (run->item, &uline,
&strike, &rise, &fg_color, &fg_set, &bg_color, &bg_set,
&shape_set, &ink_rect, &logical_rect);
/* we subtract the rise because X coordinates are upside down */
risen_y = y - rise / PANGO_SCALE;
if (!shape_set)
{
if (uline == PANGO_UNDERLINE_NONE)
pango_glyph_string_extents (run->glyphs, run->item->analysis.font, NULL, &logical_rect);
else
pango_glyph_string_extents (run->glyphs, run->item->analysis.font, &ink_rect, &logical_rect);
}
#if 0
XDrawRectangle( drawable, gc, TRUE,
x + (x_off + logical_rect.x) / PANGO_SCALE,
risen_y + overall_rect.y / PANGO_SCALE,
logical_rect.width / PANGO_SCALE,
overall_rect.height / PANGO_SCALE);
#endif
if (!shape_set)
{
int gx = x + x_off / PANGO_SCALE;
int gy = risen_y;
x11_draw_glyphs( drawable, gc, run->item->analysis.font, gx, gy, run->glyphs);
}
if (uline == PANGO_UNDERLINE_SINGLE)
{
XDrawLine( wxGlobalDisplay(), drawable, gc,
x + (x_off + ink_rect.x) / PANGO_SCALE - 1,
risen_y + 1,
x + (x_off + ink_rect.x + ink_rect.width) / PANGO_SCALE,
risen_y + 1);
}
x_off += logical_rect.width;
}
}
void
x11_draw_layout_with_colors( Drawable drawable,
GC gc,
int x,
int y,
PangoLayout *layout,
XColor *foreground,
XColor *background)
{
PangoLayoutIter *iter = pango_layout_get_iter (layout);
do
{
PangoLayoutLine *line = pango_layout_iter_get_line (iter);
PangoRectangle logical_rect;
pango_layout_iter_get_line_extents (iter, NULL, &logical_rect);
int baseline = pango_layout_iter_get_baseline (iter);
x11_draw_layout_line_with_colors( drawable, gc,
x + logical_rect.x / PANGO_SCALE,
y + baseline / PANGO_SCALE,
line,
foreground,
background);
} while (pango_layout_iter_next_line (iter));
pango_layout_iter_free (iter);
}
void
x11_draw_layout( Drawable drawable,
GC gc,
int x,
int y,
PangoLayout *layout)
{
wxCHECK_RET( layout, wxT("No layout") );
x11_draw_layout_with_colors (drawable, gc, x, y, layout, NULL, NULL);
}
void
x11_pango_get_item_properties( PangoItem *item,
PangoUnderline *uline,
gboolean *strikethrough,
gint *rise,
PangoColor *fg_color,
gboolean *fg_set,
PangoColor *bg_color,
gboolean *bg_set,
gboolean *shape_set,
PangoRectangle *ink_rect,
PangoRectangle *logical_rect)
{
GSList *tmp_list = item->analysis.extra_attrs;
if (strikethrough)
*strikethrough = FALSE;
if (fg_set)
*fg_set = FALSE;
if (bg_set)
*bg_set = FALSE;
if (shape_set)
*shape_set = FALSE;
if (rise)
*rise = 0;
while (tmp_list)
{
PangoAttribute *attr = (PangoAttribute *) tmp_list->data;
switch (attr->klass->type)
{
case PANGO_ATTR_UNDERLINE:
if (uline)
*uline = (PangoUnderline) ((PangoAttrInt *)attr)->value;
break;
case PANGO_ATTR_STRIKETHROUGH:
if (strikethrough)
*strikethrough = ((PangoAttrInt *)attr)->value;
break;
case PANGO_ATTR_FOREGROUND:
if (fg_color)
*fg_color = ((PangoAttrColor *)attr)->color;
if (fg_set)
*fg_set = TRUE;
break;
case PANGO_ATTR_BACKGROUND:
if (bg_color)
*bg_color = ((PangoAttrColor *)attr)->color;
if (bg_set)
*bg_set = TRUE;
break;
case PANGO_ATTR_SHAPE:
if (shape_set)
*shape_set = TRUE;
if (logical_rect)
*logical_rect = ((PangoAttrShape *)attr)->logical_rect;
if (ink_rect)
*ink_rect = ((PangoAttrShape *)attr)->ink_rect;
break;
case PANGO_ATTR_RISE:
if (rise)
*rise = ((PangoAttrInt *)attr)->value;
break;
default:
break;
}
tmp_list = tmp_list->next;
}
}