[wxWidgets.git] / src / x11 / pangox11.cpp

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

/* 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;
    }
}
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.
77ffb593	5	* Licence: The wxWidgets 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
	18	void
	19	x11_draw_layout_line_with_colors( Drawable drawable,
	20	GC gc,
	21	int x,
	22	int y,
	23	PangoLayoutLine *line,
	24	XColor *foreground,
	25	XColor *background);
	26
	27	void
	28	x11_draw_layout_with_colors( Drawable drawable,
	29	GC gc,
	30	int x,
	31	int y,
	32	PangoLayout *layout,
	33	XColor *foreground,
	34	XColor *background);
	35
	36	void
	37	x11_draw_layout( Drawable drawable,
	38	GC gc,
	39	int x,
	40	int y,
	41	PangoLayout *layout);
	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	{
	66	if (PANGO_XFT_IS_FONT (font))
	67	{
	68	pango_xft_picture_render( wxGlobalDisplay(), drawable, drawable, font, glyphs, x, y );
	69	}
70	else
71	{
72	pango_x_render( wxGlobalDisplay(), drawable, gc, font, glyphs, x, y );
73	}
74	}
75
76	void
77	x11_draw_layout_line_with_colors( Drawable drawable,
78	GC gc,
79	int x,
80	int y,
81	PangoLayoutLine *line,
82	XColor *foreground,
83	XColor *background)
84	{
85	PangoRectangle overall_rect;
86	PangoRectangle logical_rect;
87	PangoRectangle ink_rect;
88	PangoContext *context;
89	gint x_off = 0;
90	gint rise = 0;
91
92	context = pango_layout_get_context (line->layout);
93
94	pango_layout_line_get_extents (line,NULL, &overall_rect);
95
96	GSList *tmp_list = line->runs;
97	while (tmp_list)
98	{
99	PangoUnderline uline = PANGO_UNDERLINE_NONE;
100	PangoLayoutRun run = (PangoLayoutRun ) tmp_list->data;
101	PangoColor fg_color, bg_color;
102	gboolean strike, fg_set, bg_set, shape_set;
103	gint risen_y;
104
105	tmp_list = tmp_list->next;
106
107	x11_pango_get_item_properties (run->item, &uline,
108	&strike, &rise, &fg_color, &fg_set, &bg_color, &bg_set,
109	&shape_set, &ink_rect, &logical_rect);
110
111	/* we subtract the rise because X coordinates are upside down */
112	risen_y = y - rise / PANGO_SCALE;
113
114	if (!shape_set)
115	{
116	if (uline == PANGO_UNDERLINE_NONE)
117	pango_glyph_string_extents (run->glyphs, run->item->analysis.font, NULL, &logical_rect);
118	else
119	pango_glyph_string_extents (run->glyphs, run->item->analysis.font, &ink_rect, &logical_rect);
120	}
121
122	#if 0
123	XDrawRectangle( drawable, gc, TRUE,
124	x + (x_off + logical_rect.x) / PANGO_SCALE,
125	risen_y + overall_rect.y / PANGO_SCALE,
126	logical_rect.width / PANGO_SCALE,
127	overall_rect.height / PANGO_SCALE);
128	#endif
129
130	if (!shape_set)
131	{
132	int gx = x + x_off / PANGO_SCALE;
133	int gy = risen_y;
134
135	x11_draw_glyphs( drawable, gc, run->item->analysis.font, gx, gy, run->glyphs);
136	}
137
138	if (uline == PANGO_UNDERLINE_SINGLE)
139	{
140	XDrawLine( wxGlobalDisplay(), drawable, gc,
141	x + (x_off + ink_rect.x) / PANGO_SCALE - 1,
142	risen_y + 1,
143	x + (x_off + ink_rect.x + ink_rect.width) / PANGO_SCALE,
144	risen_y + 1);
145	}
146
147	x_off += logical_rect.width;
148	}
149	}
150
151	void
152	x11_draw_layout_with_colors( Drawable drawable,
153	GC gc,
154	int x,
155	int y,
156	PangoLayout *layout,
157	XColor *foreground,
158	XColor *background)
159	{
160	PangoLayoutIter *iter = pango_layout_get_iter (layout);
161
162	do
163	{
164	PangoLayoutLine *line = pango_layout_iter_get_line (iter);
165
166	PangoRectangle logical_rect;
167	pango_layout_iter_get_line_extents (iter, NULL, &logical_rect);
168
169	int baseline = pango_layout_iter_get_baseline (iter);
170
171	x11_draw_layout_line_with_colors( drawable, gc,
172	x + logical_rect.x / PANGO_SCALE,
173	y + baseline / PANGO_SCALE,
174	line,
175	foreground,
176	background);
177
178	} while (pango_layout_iter_next_line (iter));
179
180	pango_layout_iter_free (iter);
181	}
182
183	void
184	x11_draw_layout( Drawable drawable,
185	GC gc,
186	int x,
187	int y,
188	PangoLayout *layout)
189	{
190	wxCHECK_RET( layout, wxT("No layout") );
191
192	x11_draw_layout_with_colors (drawable, gc, x, y, layout, NULL, NULL);
193	}
194
195	void
196	x11_pango_get_item_properties( PangoItem *item,
197	PangoUnderline *uline,
198	gboolean *strikethrough,
199	gint *rise,
200	PangoColor *fg_color,
201	gboolean *fg_set,
202	PangoColor *bg_color,
203	gboolean *bg_set,
204	gboolean *shape_set,
205	PangoRectangle *ink_rect,
206	PangoRectangle *logical_rect)
207	{
208	GSList *tmp_list = item->analysis.extra_attrs;
209
210	if (strikethrough)
211	*strikethrough = FALSE;
212
213	if (fg_set)
214	*fg_set = FALSE;
215
216	if (bg_set)
217	*bg_set = FALSE;
218
219	if (shape_set)
220	*shape_set = FALSE;
221
222	if (rise)
223	*rise = 0;
224
225	while (tmp_list)
226	{
227	PangoAttribute attr = (PangoAttribute ) tmp_list->data;
228
229	switch (attr->klass->type)
230	{
231	case PANGO_ATTR_UNDERLINE:
232	if (uline)
233	uline = (PangoUnderline) ((PangoAttrInt )attr)->value;
234	break;
235
236	case PANGO_ATTR_STRIKETHROUGH:
237	if (strikethrough)
238	strikethrough = ((PangoAttrInt )attr)->value;
239	break;
240
241	case PANGO_ATTR_FOREGROUND:
242	if (fg_color)
243	fg_color = ((PangoAttrColor )attr)->color;
244	if (fg_set)
245	*fg_set = TRUE;
246
247	break;
248
249	case PANGO_ATTR_BACKGROUND:
250	if (bg_color)
251	bg_color = ((PangoAttrColor )attr)->color;
252	if (bg_set)
253	*bg_set = TRUE;
254
255	break;
256
257	case PANGO_ATTR_SHAPE:
258	if (shape_set)
259	*shape_set = TRUE;
260	if (logical_rect)
261	logical_rect = ((PangoAttrShape )attr)->logical_rect;
262	if (ink_rect)
263	ink_rect = ((PangoAttrShape )attr)->ink_rect;
264	break;
265
266	case PANGO_ATTR_RISE:
267	if (rise)
268	rise = ((PangoAttrInt )attr)->value;
269	break;
270
271	default:
272	break;
273	}
274	tmp_list = tmp_list->next;
275	}
276	}
277