[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 )
{
    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
    {
        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.
84969af7	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	{
	67	if (PANGO_XFT_IS_FONT (font))
	68	{
	69	Display* xdisplay = wxGlobalDisplay();
70	int xscreen = DefaultScreen( xdisplay );
71	Visual* xvisual = DefaultVisual( xdisplay, xscreen );
72
73	Colormap xcolormap = DefaultColormapOfScreen( XScreenOfDisplay( xdisplay, xscreen ) );
74
75	XftDraw *draw = XftDrawCreate( xdisplay, drawable, xvisual, xcolormap );
76	XftColor color;
77	color.pixel = 0;
78	color.color.red = colour.Red() << 8;
79	color.color.green = colour.Green() << 8;
80	color.color.blue = colour.Blue() << 8;
81	color.color.alpha = 65000;
82	pango_xft_render( draw, &color, font, glyphs, x, y );
83
84	XftDrawDestroy( draw );
85	}
86	else
87	{
88	pango_x_render( wxGlobalDisplay(), drawable, gc, font, glyphs, x, y );
89	}
90	}
91
92	void
93	x11_draw_layout_line_with_colors( Drawable drawable,
94	GC gc,
95	int x,
96	int y,
97	PangoLayoutLine *line,
98	wxColour &colour )
99	{
100	PangoRectangle overall_rect;
101	PangoRectangle logical_rect;
102	PangoRectangle ink_rect;
103	PangoContext *context;
104	gint x_off = 0;
105	gint rise = 0;
106
107	context = pango_layout_get_context (line->layout);
108
109	pango_layout_line_get_extents (line,NULL, &overall_rect);
110
111	GSList *tmp_list = line->runs;
112	while (tmp_list)
113	{
114	PangoUnderline uline = PANGO_UNDERLINE_NONE;
115	PangoLayoutRun run = (PangoLayoutRun ) tmp_list->data;
116	PangoColor fg_color, bg_color;
117	gboolean strike, fg_set, bg_set, shape_set;
118	gint risen_y;
119
120	tmp_list = tmp_list->next;
121
122	x11_pango_get_item_properties (run->item, &uline,
123	&strike, &rise, &fg_color, &fg_set, &bg_color, &bg_set,
124	&shape_set, &ink_rect, &logical_rect);
125
126	/* we subtract the rise because X coordinates are upside down */
127	risen_y = y - rise / PANGO_SCALE;
128
129	if (!shape_set)
130	{
131	if (uline == PANGO_UNDERLINE_NONE)
132	pango_glyph_string_extents (run->glyphs, run->item->analysis.font, NULL, &logical_rect);
133	else
134	pango_glyph_string_extents (run->glyphs, run->item->analysis.font, &ink_rect, &logical_rect);
135	}
136
137	#if 0
138	XDrawRectangle( drawable, gc, TRUE,
139	x + (x_off + logical_rect.x) / PANGO_SCALE,
140	risen_y + overall_rect.y / PANGO_SCALE,
141	logical_rect.width / PANGO_SCALE,
142	overall_rect.height / PANGO_SCALE);
143	#endif
144
145	if (!shape_set)
146	{
147	int gx = x + x_off / PANGO_SCALE;
148	int gy = risen_y;
149
150	x11_draw_glyphs( drawable, gc, run->item->analysis.font, gx, gy, run->glyphs, colour );
151	}
152
153	if (uline == PANGO_UNDERLINE_SINGLE)
154	{
155	XDrawLine( wxGlobalDisplay(), drawable, gc,
156	x + (x_off + ink_rect.x) / PANGO_SCALE - 1,
157	risen_y + 1,
158	x + (x_off + ink_rect.x + ink_rect.width) / PANGO_SCALE,
159	risen_y + 1);
160	}
161
162	x_off += logical_rect.width;
163	}
164	}
165
166	void
167	x11_draw_layout_with_colors( Drawable drawable,
168	GC gc,
169	int x,
170	int y,
171	PangoLayout *layout,
172	wxColour &colour )
173	{
174	PangoLayoutIter *iter = pango_layout_get_iter (layout);
175
176	do
177	{
178	PangoLayoutLine *line = pango_layout_iter_get_line (iter);
179
180	PangoRectangle logical_rect;
181	pango_layout_iter_get_line_extents (iter, NULL, &logical_rect);
182
183	int baseline = pango_layout_iter_get_baseline (iter);
184
185	x11_draw_layout_line_with_colors( drawable, gc,
186	x + logical_rect.x / PANGO_SCALE,
187	y + baseline / PANGO_SCALE,
188	line,
189	colour );
190
191	} while (pango_layout_iter_next_line (iter));
192
193	pango_layout_iter_free (iter);
194	}
195
196	void
197	x11_draw_layout( Drawable drawable,
198	GC gc,
199	int x,
200	int y,
201	PangoLayout *layout,
202	wxColour &colour)
203	{
204	wxCHECK_RET( layout, wxT("No layout") );
205
206	x11_draw_layout_with_colors (drawable, gc, x, y, layout, colour );
207	}
208
209	void
210	x11_pango_get_item_properties( PangoItem *item,
211	PangoUnderline *uline,
212	gboolean *strikethrough,
213	gint *rise,
214	PangoColor *fg_color,
215	gboolean *fg_set,
216	PangoColor *bg_color,
217	gboolean *bg_set,
218	gboolean *shape_set,
219	PangoRectangle *ink_rect,
220	PangoRectangle *logical_rect)
221	{
222	GSList *tmp_list = item->analysis.extra_attrs;
223
224	if (strikethrough)
225	*strikethrough = FALSE;
226
227	if (fg_set)
228	*fg_set = FALSE;
229
230	if (bg_set)
231	*bg_set = FALSE;
232
233	if (shape_set)
234	*shape_set = FALSE;
235
236	if (rise)
237	*rise = 0;
238
239	while (tmp_list)
240	{
241	PangoAttribute attr = (PangoAttribute ) tmp_list->data;
242
243	switch (attr->klass->type)
244	{
245	case PANGO_ATTR_UNDERLINE:
246	if (uline)
247	uline = (PangoUnderline) ((PangoAttrInt )attr)->value;
248	break;
249
250	case PANGO_ATTR_STRIKETHROUGH:
251	if (strikethrough)
252	strikethrough = ((PangoAttrInt )attr)->value;
253	break;
254
255	case PANGO_ATTR_FOREGROUND:
256	if (fg_color)
257	fg_color = ((PangoAttrColor )attr)->color;
258	if (fg_set)
259	*fg_set = TRUE;
260
261	break;
262
263	case PANGO_ATTR_BACKGROUND:
264	if (bg_color)
265	bg_color = ((PangoAttrColor )attr)->color;
266	if (bg_set)
267	*bg_set = TRUE;
268
269	break;
270
271	case PANGO_ATTR_SHAPE:
272	if (shape_set)
273	*shape_set = TRUE;
274	if (logical_rect)
275	logical_rect = ((PangoAttrShape )attr)->logical_rect;
276	if (ink_rect)
277	ink_rect = ((PangoAttrShape )attr)->ink_rect;
278	break;
279
280	case PANGO_ATTR_RISE:
281	if (rise)
282	rise = ((PangoAttrInt )attr)->value;
283	break;
284
285	default:
286	break;
287	}
288	tmp_list = tmp_list->next;
289	}
290	}
291