[wxWidgets.git] / src / x11 / pango_x.cpp

/**
 * This file gets included from dcclient.cpp and implements 
 * the X11 interface to Pango. 
 * Copyright (C) Owen Taylor and Robert Roebling.
 * Licence: The wxWindows licence
 */

/* Declaration */

void
x11_draw_glyphs( Drawable       drawable,
		         GC             gc,
		         PangoFont     *font,
		         int            x,
		         int            y,
		         PangoGlyphString *glyphs,
                 wxColour       &colour );
                 
void 
x11_draw_layout_line_with_colors( Drawable         drawable,
                                  GC               gc,
                                  int              x, 
                                  int              y,
                                  PangoLayoutLine  *line,
                                  wxColour       &colour );
                                  
void 
x11_draw_layout_with_colors( Drawable      drawable,
                             GC            gc,
                             int           x, 
                             int           y,
                             PangoLayout  *layout,
                             wxColour     &colour );
                             
void 
x11_draw_layout( Drawable     drawable,
                 GC           gc,
                 int          x, 
                 int          y,
                 PangoLayout *layout,
                 wxColour    &colour);
                 
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,
                 wxColour           &colour )
{
#ifdef HAVE_PANGO_XFT
    if (PANGO_XFT_IS_FONT (font))
    {
        Display* xdisplay = wxGlobalDisplay();
        int xscreen = DefaultScreen( xdisplay );
        Visual* xvisual = DefaultVisual( xdisplay, xscreen );

        Colormap xcolormap = DefaultColormapOfScreen( XScreenOfDisplay( xdisplay, xscreen ) );

        XftDraw *draw = XftDrawCreate( xdisplay, drawable, xvisual, xcolormap );
        XftColor color;
        color.pixel = 0;
        color.color.red = colour.Red() << 8;
        color.color.green = colour.Green() << 8;
        color.color.blue = colour.Blue() << 8;
        color.color.alpha = 65000;
        pango_xft_render( draw, &color, font, glyphs, x, y );
        
        XftDrawDestroy( draw );
    }
    else
#endif
    {
        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,
                                  wxColour        &colour )
{
    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, colour );
        }
      
        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,
                             wxColour       &colour )
{
    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,
                                          colour );
                                          
    } 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,
                 wxColour    &colour)
{
    wxCHECK_RET( layout, wxT("No layout") );

    x11_draw_layout_with_colors (drawable, gc, x, y, layout, colour );
}

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;
    }
}
Commit	Line	Data
2b5f62a0 VZ	1	/**
	2	* This file gets included from dcclient.cpp and implements
	3	* the X11 interface to Pango.
	4	* Copyright (C) Owen Taylor and Robert Roebling.
65571936	5	* Licence: The wxWindows licence
2b5f62a0 VZ	6	*/
	7
	8	/* Declaration */
	9
	10	void
	11	x11_draw_glyphs( Drawable drawable,
	12	GC gc,
	13	PangoFont *font,
	14	int x,
	15	int y,
	16	PangoGlyphString *glyphs,
	17	wxColour &colour );
	18
	19	void
	20	x11_draw_layout_line_with_colors( Drawable drawable,
	21	GC gc,
	22	int x,
	23	int y,
	24	PangoLayoutLine *line,
	25	wxColour &colour );
	26
	27	void
	28	x11_draw_layout_with_colors( Drawable drawable,
	29	GC gc,
	30	int x,
	31	int y,
	32	PangoLayout *layout,
	33	wxColour &colour );
	34
	35	void
	36	x11_draw_layout( Drawable drawable,
	37	GC gc,
	38	int x,
	39	int y,
	40	PangoLayout *layout,
	41	wxColour &colour);
	42
	43	void
	44	x11_pango_get_item_properties( PangoItem *item,
	45	PangoUnderline *uline,
	46	gboolean *strikethrough,
	47	gint *rise,
	48	PangoColor *fg_color,
	49	gboolean *fg_set,
	50	PangoColor *bg_color,
	51	gboolean *bg_set,
	52	gboolean *shape_set,
	53	PangoRectangle *ink_rect,
	54	PangoRectangle *logical_rect);
	55
	56	/* Implementation */
	57
	58	void
	59	x11_draw_glyphs( Drawable drawable,
	60	GC gc,
	61	PangoFont *font,
	62	int x,
	63	int y,
	64	PangoGlyphString *glyphs,
	65	wxColour &colour )
	66	{
4ae1af05	67	#ifdef HAVE_PANGO_XFT
2b5f62a0 VZ	68	if (PANGO_XFT_IS_FONT (font))
	69	{
	70	Display* xdisplay = wxGlobalDisplay();
	71	int xscreen = DefaultScreen( xdisplay );
	72	Visual* xvisual = DefaultVisual( xdisplay, xscreen );
	73
	74	Colormap xcolormap = DefaultColormapOfScreen( XScreenOfDisplay( xdisplay, xscreen ) );
	75
	76	XftDraw *draw = XftDrawCreate( xdisplay, drawable, xvisual, xcolormap );
	77	XftColor color;
	78	color.pixel = 0;
	79	color.color.red = colour.Red() << 8;
	80	color.color.green = colour.Green() << 8;
	81	color.color.blue = colour.Blue() << 8;
	82	color.color.alpha = 65000;
	83	pango_xft_render( draw, &color, font, glyphs, x, y );
	84
	85	XftDrawDestroy( draw );
	86	}
	87	else
4ae1af05	88	#endif
2b5f62a0 VZ	89	{
	90	pango_x_render( wxGlobalDisplay(), drawable, gc, font, glyphs, x, y );
	91	}
	92	}
	93
	94	void
	95	x11_draw_layout_line_with_colors( Drawable drawable,
	96	GC gc,
	97	int x,
	98	int y,
	99	PangoLayoutLine *line,
	100	wxColour &colour )
	101	{
	102	PangoRectangle overall_rect;
	103	PangoRectangle logical_rect;
	104	PangoRectangle ink_rect;
	105	PangoContext *context;
	106	gint x_off = 0;
	107	gint rise = 0;
	108
	109	context = pango_layout_get_context (line->layout);
	110
	111	pango_layout_line_get_extents (line,NULL, &overall_rect);
	112
	113	GSList *tmp_list = line->runs;
	114	while (tmp_list)
	115	{
	116	PangoUnderline uline = PANGO_UNDERLINE_NONE;
	117	PangoLayoutRun run = (PangoLayoutRun ) tmp_list->data;
	118	PangoColor fg_color, bg_color;
	119	gboolean strike, fg_set, bg_set, shape_set;
	120	gint risen_y;
	121
	122	tmp_list = tmp_list->next;
	123
	124	x11_pango_get_item_properties (run->item, &uline,
	125	&strike, &rise, &fg_color, &fg_set, &bg_color, &bg_set,
	126	&shape_set, &ink_rect, &logical_rect);
	127
	128	/* we subtract the rise because X coordinates are upside down */
	129	risen_y = y - rise / PANGO_SCALE;
	130
	131	if (!shape_set)
	132	{
	133	if (uline == PANGO_UNDERLINE_NONE)
	134	pango_glyph_string_extents (run->glyphs, run->item->analysis.font, NULL, &logical_rect);
	135	else
	136	pango_glyph_string_extents (run->glyphs, run->item->analysis.font, &ink_rect, &logical_rect);
	137	}
	138
	139	#if 0
	140	XDrawRectangle( drawable, gc, TRUE,
	141	x + (x_off + logical_rect.x) / PANGO_SCALE,
	142	risen_y + overall_rect.y / PANGO_SCALE,
	143	logical_rect.width / PANGO_SCALE,
	144	overall_rect.height / PANGO_SCALE);
	145	#endif
	146
	147	if (!shape_set)
	148	{
	149	int gx = x + x_off / PANGO_SCALE;
	150	int gy = risen_y;
	151
	152	x11_draw_glyphs( drawable, gc, run->item->analysis.font, gx, gy, run->glyphs, colour );
153	}
154
155	if (uline == PANGO_UNDERLINE_SINGLE)
156	{
157	XDrawLine( wxGlobalDisplay(), drawable, gc,
158	x + (x_off + ink_rect.x) / PANGO_SCALE - 1,
159	risen_y + 1,
160	x + (x_off + ink_rect.x + ink_rect.width) / PANGO_SCALE,
161	risen_y + 1);
162	}
163
164	x_off += logical_rect.width;
165	}
166	}
167
168	void
169	x11_draw_layout_with_colors( Drawable drawable,
170	GC gc,
171	int x,
172	int y,
173	PangoLayout *layout,
174	wxColour &colour )
175	{
176	PangoLayoutIter *iter = pango_layout_get_iter (layout);
177
178	do
179	{
180	PangoLayoutLine *line = pango_layout_iter_get_line (iter);
181
182	PangoRectangle logical_rect;
183	pango_layout_iter_get_line_extents (iter, NULL, &logical_rect);
184
185	int baseline = pango_layout_iter_get_baseline (iter);
186
187	x11_draw_layout_line_with_colors( drawable, gc,
188	x + logical_rect.x / PANGO_SCALE,
189	y + baseline / PANGO_SCALE,
190	line,
191	colour );
192
193	} while (pango_layout_iter_next_line (iter));
194
195	pango_layout_iter_free (iter);
196	}
197
198	void
199	x11_draw_layout( Drawable drawable,
200	GC gc,
201	int x,
202	int y,
203	PangoLayout *layout,
204	wxColour &colour)
205	{
206	wxCHECK_RET( layout, wxT("No layout") );
207
208	x11_draw_layout_with_colors (drawable, gc, x, y, layout, colour );
209	}
210
211	void
212	x11_pango_get_item_properties( PangoItem *item,
213	PangoUnderline *uline,
214	gboolean *strikethrough,
215	gint *rise,
216	PangoColor *fg_color,
217	gboolean *fg_set,
218	PangoColor *bg_color,
219	gboolean *bg_set,
220	gboolean *shape_set,
221	PangoRectangle *ink_rect,
222	PangoRectangle *logical_rect)
223	{
224	GSList *tmp_list = item->analysis.extra_attrs;
225
226	if (strikethrough)
227	*strikethrough = FALSE;
228
229	if (fg_set)
230	*fg_set = FALSE;
231
232	if (bg_set)
233	*bg_set = FALSE;
234
235	if (shape_set)
236	*shape_set = FALSE;
237
238	if (rise)
239	*rise = 0;
240
241	while (tmp_list)
242	{
243	PangoAttribute attr = (PangoAttribute ) tmp_list->data;
244
245	switch (attr->klass->type)
246	{
247	case PANGO_ATTR_UNDERLINE:
248	if (uline)
249	uline = (PangoUnderline) ((PangoAttrInt )attr)->value;
250	break;
251
252	case PANGO_ATTR_STRIKETHROUGH:
253	if (strikethrough)
254	strikethrough = ((PangoAttrInt )attr)->value;
255	break;
256
257	case PANGO_ATTR_FOREGROUND:
258	if (fg_color)
259	fg_color = ((PangoAttrColor )attr)->color;
260	if (fg_set)
261	*fg_set = TRUE;
262
263	break;
264
265	case PANGO_ATTR_BACKGROUND:
266	if (bg_color)
267	bg_color = ((PangoAttrColor )attr)->color;
268	if (bg_set)
269	*bg_set = TRUE;
270
271	break;
272
273	case PANGO_ATTR_SHAPE:
274	if (shape_set)
275	*shape_set = TRUE;
276	if (logical_rect)
277	logical_rect = ((PangoAttrShape )attr)->logical_rect;
278	if (ink_rect)
279	ink_rect = ((PangoAttrShape )attr)->ink_rect;
280	break;
281
282	case PANGO_ATTR_RISE:
283	if (rise)
284	rise = ((PangoAttrInt )attr)->value;
285	break;
286
287	default:
288	break;
289	}
290	tmp_list = tmp_list->next;
291	}
292	}
293