Fourth try to add pang_x.cpp
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
276
src/x11/pango_x.cpp
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276
src/x11/pango_x.cpp
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/**
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* This file gets included from dcclient.cpp and implements
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* the X11 interface to Pango.
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* Copyright (C) Owen Taylor and Robert Roebling.
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*/
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/* Declaration */
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void
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x11_draw_glyphs( Drawable drawable,
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GC gc,
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PangoFont *font,
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int x,
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int y,
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PangoGlyphString *glyphs);
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void
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x11_draw_layout_line_with_colors( Drawable drawable,
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GC gc,
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int x,
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int y,
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PangoLayoutLine *line,
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XColor *foreground,
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XColor *background);
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void
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x11_draw_layout_with_colors( Drawable drawable,
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GC gc,
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int x,
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int y,
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PangoLayout *layout,
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XColor *foreground,
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XColor *background);
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void
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x11_draw_layout( Drawable drawable,
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GC gc,
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int x,
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int y,
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PangoLayout *layout);
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void
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x11_pango_get_item_properties( PangoItem *item,
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PangoUnderline *uline,
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gboolean *strikethrough,
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gint *rise,
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PangoColor *fg_color,
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gboolean *fg_set,
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PangoColor *bg_color,
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gboolean *bg_set,
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gboolean *shape_set,
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PangoRectangle *ink_rect,
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PangoRectangle *logical_rect);
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/* Implementation */
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void
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x11_draw_glyphs( Drawable drawable,
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GC gc,
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PangoFont *font,
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int x,
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int y,
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PangoGlyphString *glyphs)
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{
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if (PANGO_XFT_IS_FONT (font))
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{
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pango_xft_picture_render( wxGlobalDisplay(), drawable, drawable, font, glyphs, x, y );
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}
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else
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{
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pango_x_render( wxGlobalDisplay(), drawable, gc, font, glyphs, x, y );
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}
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}
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void
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x11_draw_layout_line_with_colors( Drawable drawable,
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GC gc,
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int x,
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int y,
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PangoLayoutLine *line,
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XColor *foreground,
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XColor *background)
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{
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PangoRectangle overall_rect;
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PangoRectangle logical_rect;
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PangoRectangle ink_rect;
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PangoContext *context;
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gint x_off = 0;
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gint rise = 0;
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context = pango_layout_get_context (line->layout);
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pango_layout_line_get_extents (line,NULL, &overall_rect);
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GSList *tmp_list = line->runs;
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while (tmp_list)
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{
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PangoUnderline uline = PANGO_UNDERLINE_NONE;
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PangoLayoutRun *run = (PangoLayoutRun *) tmp_list->data;
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PangoColor fg_color, bg_color;
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gboolean strike, fg_set, bg_set, shape_set;
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gint risen_y;
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tmp_list = tmp_list->next;
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x11_pango_get_item_properties (run->item, &uline,
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&strike, &rise, &fg_color, &fg_set, &bg_color, &bg_set,
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&shape_set, &ink_rect, &logical_rect);
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/* we subtract the rise because X coordinates are upside down */
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risen_y = y - rise / PANGO_SCALE;
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if (!shape_set)
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{
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if (uline == PANGO_UNDERLINE_NONE)
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pango_glyph_string_extents (run->glyphs, run->item->analysis.font, NULL, &logical_rect);
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else
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pango_glyph_string_extents (run->glyphs, run->item->analysis.font, &ink_rect, &logical_rect);
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}
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#if 0
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XDrawRectangle( drawable, gc, TRUE,
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x + (x_off + logical_rect.x) / PANGO_SCALE,
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risen_y + overall_rect.y / PANGO_SCALE,
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logical_rect.width / PANGO_SCALE,
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overall_rect.height / PANGO_SCALE);
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#endif
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if (!shape_set)
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{
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int gx = x + x_off / PANGO_SCALE;
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int gy = risen_y;
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x11_draw_glyphs( drawable, gc, run->item->analysis.font, gx, gy, run->glyphs);
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}
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if (uline == PANGO_UNDERLINE_SINGLE)
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{
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XDrawLine( wxGlobalDisplay(), drawable, gc,
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x + (x_off + ink_rect.x) / PANGO_SCALE - 1,
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risen_y + 1,
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x + (x_off + ink_rect.x + ink_rect.width) / PANGO_SCALE,
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risen_y + 1);
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}
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x_off += logical_rect.width;
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}
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}
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void
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x11_draw_layout_with_colors( Drawable drawable,
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GC gc,
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int x,
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int y,
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PangoLayout *layout,
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XColor *foreground,
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XColor *background)
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{
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PangoLayoutIter *iter = pango_layout_get_iter (layout);
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do
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{
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PangoLayoutLine *line = pango_layout_iter_get_line (iter);
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PangoRectangle logical_rect;
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pango_layout_iter_get_line_extents (iter, NULL, &logical_rect);
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int baseline = pango_layout_iter_get_baseline (iter);
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x11_draw_layout_line_with_colors( drawable, gc,
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x + logical_rect.x / PANGO_SCALE,
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y + baseline / PANGO_SCALE,
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line,
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foreground,
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background);
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} while (pango_layout_iter_next_line (iter));
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pango_layout_iter_free (iter);
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}
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void
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x11_draw_layout( Drawable drawable,
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GC gc,
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int x,
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int y,
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PangoLayout *layout)
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{
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wxCHECK_RET( layout, wxT("No layout") );
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x11_draw_layout_with_colors (drawable, gc, x, y, layout, NULL, NULL);
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}
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void
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x11_pango_get_item_properties( PangoItem *item,
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PangoUnderline *uline,
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gboolean *strikethrough,
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gint *rise,
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PangoColor *fg_color,
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gboolean *fg_set,
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PangoColor *bg_color,
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gboolean *bg_set,
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gboolean *shape_set,
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PangoRectangle *ink_rect,
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PangoRectangle *logical_rect)
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{
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GSList *tmp_list = item->analysis.extra_attrs;
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if (strikethrough)
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*strikethrough = FALSE;
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if (fg_set)
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*fg_set = FALSE;
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if (bg_set)
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*bg_set = FALSE;
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if (shape_set)
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*shape_set = FALSE;
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if (rise)
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*rise = 0;
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while (tmp_list)
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{
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PangoAttribute *attr = (PangoAttribute *) tmp_list->data;
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switch (attr->klass->type)
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{
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case PANGO_ATTR_UNDERLINE:
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if (uline)
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*uline = (PangoUnderline) ((PangoAttrInt *)attr)->value;
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break;
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case PANGO_ATTR_STRIKETHROUGH:
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if (strikethrough)
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*strikethrough = ((PangoAttrInt *)attr)->value;
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break;
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case PANGO_ATTR_FOREGROUND:
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if (fg_color)
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*fg_color = ((PangoAttrColor *)attr)->color;
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if (fg_set)
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*fg_set = TRUE;
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break;
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case PANGO_ATTR_BACKGROUND:
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if (bg_color)
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*bg_color = ((PangoAttrColor *)attr)->color;
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if (bg_set)
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*bg_set = TRUE;
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break;
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case PANGO_ATTR_SHAPE:
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if (shape_set)
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*shape_set = TRUE;
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if (logical_rect)
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*logical_rect = ((PangoAttrShape *)attr)->logical_rect;
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if (ink_rect)
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*ink_rect = ((PangoAttrShape *)attr)->ink_rect;
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break;
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case PANGO_ATTR_RISE:
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if (rise)
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*rise = ((PangoAttrInt *)attr)->value;
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break;
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default:
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break;
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}
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tmp_list = tmp_list->next;
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}
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}
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