1 /* gtktextdisplay.c - display layed-out text
3 * Copyright (c) 1992-1994 The Regents of the University of California.
4 * Copyright (c) 1994-1997 Sun Microsystems, Inc.
5 * Copyright (c) 2000 Red Hat, Inc.
6 * Tk->Gtk port by Havoc Pennington
8 * This file can be used under your choice of two licenses, the LGPL
9 * and the original Tk license.
13 * This library is free software; you can redistribute it and/or
14 * modify it under the terms of the GNU Lesser General Public
15 * License as published by the Free Software Foundation; either
16 * version 2 of the License, or (at your option) any later version.
18 * This library is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 * Lesser General Public License for more details.
23 * You should have received a copy of the GNU Lesser General Public
24 * License along with this library; if not, write to the Free
25 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 * Original Tk license:
29 * This software is copyrighted by the Regents of the University of
30 * California, Sun Microsystems, Inc., and other parties. The
31 * following terms apply to all files associated with the software
32 * unless explicitly disclaimed in individual files.
34 * The authors hereby grant permission to use, copy, modify,
35 * distribute, and license this software and its documentation for any
36 * purpose, provided that existing copyright notices are retained in
37 * all copies and that this notice is included verbatim in any
38 * distributions. No written agreement, license, or royalty fee is
39 * required for any of the authorized uses. Modifications to this
40 * software may be copyrighted by their authors and need not follow
41 * the licensing terms described here, provided that the new terms are
42 * clearly indicated on the first page of each file where they apply.
44 * IN NO EVENT SHALL THE AUTHORS OR DISTRIBUTORS BE LIABLE TO ANY
45 * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
46 * DAMAGES ARISING OUT OF THE USE OF THIS SOFTWARE, ITS DOCUMENTATION,
47 * OR ANY DERIVATIVES THEREOF, EVEN IF THE AUTHORS HAVE BEEN ADVISED
48 * OF THE POSSIBILITY OF SUCH DAMAGE.
50 * THE AUTHORS AND DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES,
51 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
52 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
53 * NON-INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS,
54 * AND THE AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE
55 * MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
57 * GOVERNMENT USE: If you are acquiring this software on behalf of the
58 * U.S. government, the Government shall have only "Restricted Rights"
59 * in the software and related documentation as defined in the Federal
60 * Acquisition Regulations (FARs) in Clause 52.227.19 (c) (2). If you
61 * are acquiring the software on behalf of the Department of Defense,
62 * the software shall be classified as "Commercial Computer Software"
63 * and the Government shall have only "Restricted Rights" as defined
64 * in Clause 252.227-7013 (c) (1) of DFARs. Notwithstanding the
65 * foregoing, the authors grant the U.S. Government and others acting
66 * in its behalf permission to use and distribute the software in
67 * accordance with the terms specified in this license.
71 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
72 * file for a list of people on the GTK+ Team. See the ChangeLog
73 * files for a list of changes. These files are distributed with
74 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
77 #define GTK_TEXT_USE_INTERNAL_UNSUPPORTED_API
79 #include "gtktextdisplay.h"
81 /* DO NOT go putting private headers in here. This file should only
82 * use the semi-public headers, as with gtktextview.c.
85 #define GTK_TYPE_TEXT_RENDERER (_gtk_text_renderer_get_type())
86 #define GTK_TEXT_RENDERER(object) (G_TYPE_CHECK_INSTANCE_CAST ((object), GTK_TYPE_TEXT_RENDERER, GtkTextRenderer))
87 #define GTK_IS_TEXT_RENDERER(object) (G_TYPE_CHECK_INSTANCE_TYPE ((object), GTK_TYPE_TEXT_RENDERER))
88 #define GTK_TEXT_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_TEXT_RENDERER, GtkTextRendererClass))
89 #define GTK_IS_TEXT_RENDERER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_TEXT_RENDERER))
90 #define GTK_TEXT_RENDERER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_TEXT_RENDERER, GtkTextRendererClass))
92 typedef struct _GtkTextRenderer GtkTextRenderer;
93 typedef struct _GtkTextRendererClass GtkTextRendererClass;
101 struct _GtkTextRenderer
103 PangoRenderer parent_instance;
108 GdkColor *error_color; /* Error underline color for this widget */
109 GList *widgets; /* widgets encountered when drawing */
114 struct _GtkTextRendererClass
116 PangoRendererClass parent_class;
119 G_DEFINE_TYPE (GtkTextRenderer, _gtk_text_renderer, PANGO_TYPE_RENDERER)
122 text_renderer_get_error_color (GtkTextRenderer *text_renderer)
124 static const GdkColor red = { 0, 0xffff, 0, 0 };
126 if (!text_renderer->error_color)
127 gtk_widget_style_get (text_renderer->widget,
128 "error-underline-color", &text_renderer->error_color,
131 if (!text_renderer->error_color)
132 text_renderer->error_color = gdk_color_copy (&red);
134 return text_renderer->error_color;
138 text_renderer_set_gdk_color (GtkTextRenderer *text_renderer,
139 PangoRenderPart part,
142 PangoRenderer *renderer = PANGO_RENDERER (text_renderer);
148 color.red = gdk_color->red;
149 color.green = gdk_color->green;
150 color.blue = gdk_color->blue;
152 pango_renderer_set_color (renderer, part, &color);
155 pango_renderer_set_color (renderer, part, NULL);
159 static GtkTextAppearance *
160 get_item_appearance (PangoItem *item)
162 GSList *tmp_list = item->analysis.extra_attrs;
166 PangoAttribute *attr = tmp_list->data;
168 if (attr->klass->type == gtk_text_attr_appearance_type)
169 return &((GtkTextAttrAppearance *)attr)->appearance;
171 tmp_list = tmp_list->next;
178 gtk_text_renderer_prepare_run (PangoRenderer *renderer,
181 GtkTextRenderer *text_renderer = GTK_TEXT_RENDERER (renderer);
183 GdkColor *bg_color, *fg_color, *underline_color;
184 GtkTextAppearance *appearance;
186 PANGO_RENDERER_CLASS (_gtk_text_renderer_parent_class)->prepare_run (renderer, run);
188 appearance = get_item_appearance (run->item);
189 g_assert (appearance != NULL);
191 if (appearance->draw_bg && text_renderer->state == NORMAL)
192 bg_color = &appearance->bg_color;
196 text_renderer_set_gdk_color (text_renderer, PANGO_RENDER_PART_BACKGROUND, bg_color);
198 style = gtk_widget_get_style (text_renderer->widget);
199 if (text_renderer->state == SELECTED)
201 if (gtk_widget_has_focus (text_renderer->widget))
202 fg_color = &style->text[GTK_STATE_SELECTED];
204 fg_color = &style->text[GTK_STATE_ACTIVE];
206 else if (text_renderer->state == CURSOR && gtk_widget_has_focus (text_renderer->widget))
207 fg_color = &style->base[GTK_STATE_NORMAL];
209 fg_color = &appearance->fg_color;
211 text_renderer_set_gdk_color (text_renderer, PANGO_RENDER_PART_FOREGROUND, fg_color);
212 text_renderer_set_gdk_color (text_renderer, PANGO_RENDER_PART_STRIKETHROUGH, fg_color);
214 if (appearance->underline == PANGO_UNDERLINE_ERROR)
215 underline_color = text_renderer_get_error_color (text_renderer);
217 underline_color = fg_color;
219 text_renderer_set_gdk_color (text_renderer, PANGO_RENDER_PART_UNDERLINE, underline_color);
223 set_color (GtkTextRenderer *text_renderer,
224 PangoRenderPart part)
228 cairo_save (text_renderer->cr);
230 color = pango_renderer_get_color (PANGO_RENDERER (text_renderer), part);
232 cairo_set_source_rgb (text_renderer->cr,
234 color->green / 65535.,
235 color->blue / 65535.);
239 unset_color (GtkTextRenderer *text_renderer)
241 cairo_restore (text_renderer->cr);
245 gtk_text_renderer_draw_glyphs (PangoRenderer *renderer,
247 PangoGlyphString *glyphs,
251 GtkTextRenderer *text_renderer = GTK_TEXT_RENDERER (renderer);
253 set_color (text_renderer, PANGO_RENDER_PART_FOREGROUND);
255 cairo_move_to (text_renderer->cr, (double)x / PANGO_SCALE, (double)y / PANGO_SCALE);
256 pango_cairo_show_glyph_string (text_renderer->cr, font, glyphs);
258 unset_color (text_renderer);
262 gtk_text_renderer_draw_glyph_item (PangoRenderer *renderer,
264 PangoGlyphItem *glyph_item,
268 GtkTextRenderer *text_renderer = GTK_TEXT_RENDERER (renderer);
270 set_color (text_renderer, PANGO_RENDER_PART_FOREGROUND);
272 cairo_move_to (text_renderer->cr, (double)x / PANGO_SCALE, (double)y / PANGO_SCALE);
273 pango_cairo_show_glyph_item (text_renderer->cr, text, glyph_item);
275 unset_color (text_renderer);
279 gtk_text_renderer_draw_rectangle (PangoRenderer *renderer,
280 PangoRenderPart part,
286 GtkTextRenderer *text_renderer = GTK_TEXT_RENDERER (renderer);
288 set_color (text_renderer, part);
290 cairo_rectangle (text_renderer->cr,
291 (double)x / PANGO_SCALE, (double)y / PANGO_SCALE,
292 (double)width / PANGO_SCALE, (double)height / PANGO_SCALE);
293 cairo_fill (text_renderer->cr);
295 unset_color (text_renderer);
299 gtk_text_renderer_draw_trapezoid (PangoRenderer *renderer,
300 PangoRenderPart part,
308 GtkTextRenderer *text_renderer = GTK_TEXT_RENDERER (renderer);
310 cairo_matrix_t matrix;
312 set_color (text_renderer, part);
314 cr = text_renderer->cr;
316 cairo_get_matrix (cr, &matrix);
317 matrix.xx = matrix.yy = 1.0;
318 matrix.xy = matrix.yx = 0.0;
319 cairo_set_matrix (cr, &matrix);
321 cairo_move_to (cr, x11, y1_);
322 cairo_line_to (cr, x21, y1_);
323 cairo_line_to (cr, x22, y2);
324 cairo_line_to (cr, x12, y2);
325 cairo_close_path (cr);
329 unset_color (text_renderer);
333 gtk_text_renderer_draw_error_underline (PangoRenderer *renderer,
339 GtkTextRenderer *text_renderer = GTK_TEXT_RENDERER (renderer);
341 set_color (text_renderer, PANGO_RENDER_PART_UNDERLINE);
343 pango_cairo_show_error_underline (text_renderer->cr,
344 (double)x / PANGO_SCALE, (double)y / PANGO_SCALE,
345 (double)width / PANGO_SCALE, (double)height / PANGO_SCALE);
347 unset_color (text_renderer);
351 gtk_text_renderer_draw_shape (PangoRenderer *renderer,
352 PangoAttrShape *attr,
356 GtkTextRenderer *text_renderer = GTK_TEXT_RENDERER (renderer);
360 style = gtk_widget_get_style (text_renderer->widget);
361 if (text_renderer->state == SELECTED)
363 if (gtk_widget_has_focus (text_renderer->widget))
364 fg = &style->text[GTK_STATE_SELECTED];
366 fg = &style->text[GTK_STATE_SELECTED];
368 else if (text_renderer->state == CURSOR && gtk_widget_has_focus (text_renderer->widget))
369 fg = &style->base[GTK_STATE_NORMAL];
371 fg = &style->text[GTK_STATE_NORMAL];
373 if (attr->data == NULL)
375 /* This happens if we have an empty widget anchor. Draw
376 * something empty-looking.
378 GdkRectangle shape_rect;
381 shape_rect.x = PANGO_PIXELS (x);
382 shape_rect.y = PANGO_PIXELS (y + attr->logical_rect.y);
383 shape_rect.width = PANGO_PIXELS (x + attr->logical_rect.width) - shape_rect.x;
384 shape_rect.height = PANGO_PIXELS (y + attr->logical_rect.y + attr->logical_rect.height) - shape_rect.y;
386 cr = text_renderer->cr;
390 cairo_set_line_width (cr, 1.0);
391 gdk_cairo_set_source_color (cr, fg);
394 shape_rect.x + 0.5, shape_rect.y + 0.5,
395 shape_rect.width - 1, shape_rect.height - 1);
396 cairo_move_to (cr, shape_rect.x + 0.5, shape_rect.y + 0.5);
398 shape_rect.x + shape_rect.width - 0.5,
399 shape_rect.y + shape_rect.height - 0.5);
400 cairo_move_to (cr, shape_rect.x + 0.5,
401 shape_rect.y + shape_rect.height - 0.5);
402 cairo_line_to (cr, shape_rect.x + shape_rect.width - 0.5,
409 else if (GDK_IS_PIXBUF (attr->data))
411 cairo_t *cr = text_renderer->cr;
412 GdkPixbuf *pixbuf = GDK_PIXBUF (attr->data);
416 gdk_cairo_set_source_pixbuf (cr, pixbuf,
418 PANGO_PIXELS (y) - gdk_pixbuf_get_height (pixbuf));
423 else if (GTK_IS_WIDGET (attr->data))
427 widget = GTK_WIDGET (attr->data);
429 text_renderer->widgets = g_list_prepend (text_renderer->widgets,
430 g_object_ref (widget));
433 g_assert_not_reached (); /* not a pixbuf or widget */
437 gtk_text_renderer_finalize (GObject *object)
439 G_OBJECT_CLASS (_gtk_text_renderer_parent_class)->finalize (object);
443 _gtk_text_renderer_init (GtkTextRenderer *renderer)
448 _gtk_text_renderer_class_init (GtkTextRendererClass *klass)
450 GObjectClass *object_class = G_OBJECT_CLASS (klass);
452 PangoRendererClass *renderer_class = PANGO_RENDERER_CLASS (klass);
454 renderer_class->prepare_run = gtk_text_renderer_prepare_run;
455 renderer_class->draw_glyphs = gtk_text_renderer_draw_glyphs;
456 renderer_class->draw_glyph_item = gtk_text_renderer_draw_glyph_item;
457 renderer_class->draw_rectangle = gtk_text_renderer_draw_rectangle;
458 renderer_class->draw_trapezoid = gtk_text_renderer_draw_trapezoid;
459 renderer_class->draw_error_underline = gtk_text_renderer_draw_error_underline;
460 renderer_class->draw_shape = gtk_text_renderer_draw_shape;
462 object_class->finalize = gtk_text_renderer_finalize;
466 text_renderer_set_state (GtkTextRenderer *text_renderer,
469 text_renderer->state = state;
473 text_renderer_begin (GtkTextRenderer *text_renderer,
477 text_renderer->widget = widget;
478 text_renderer->cr = cr;
481 /* Returns a GSList of (referenced) widgets encountered while drawing.
484 text_renderer_end (GtkTextRenderer *text_renderer)
486 GList *widgets = text_renderer->widgets;
488 text_renderer->widget = NULL;
489 text_renderer->cr = NULL;
491 text_renderer->widgets = NULL;
493 if (text_renderer->error_color)
495 gdk_color_free (text_renderer->error_color);
496 text_renderer->error_color = NULL;
503 static cairo_region_t *
504 get_selected_clip (GtkTextRenderer *text_renderer,
506 PangoLayoutLine *line,
515 cairo_region_t *clip_region = cairo_region_create ();
517 pango_layout_line_get_x_ranges (line, start_index, end_index, &ranges, &n_ranges);
519 for (i=0; i < n_ranges; i++)
523 rect.x = x + PANGO_PIXELS (ranges[2*i]);
525 rect.width = PANGO_PIXELS (ranges[2*i + 1]) - PANGO_PIXELS (ranges[2*i]);
526 rect.height = height;
528 cairo_region_union_rectangle (clip_region, &rect);
536 render_para (GtkTextRenderer *text_renderer,
537 GtkTextLineDisplay *line_display,
538 /* Top-left corner of paragraph including all margins */
541 int selection_start_index,
542 int selection_end_index)
545 PangoLayout *layout = line_display->layout;
547 PangoLayoutIter *iter;
548 PangoRectangle layout_logical;
552 gboolean first = TRUE;
554 style = gtk_widget_get_style (text_renderer->widget);
556 iter = pango_layout_get_iter (layout);
558 pango_layout_iter_get_layout_extents (iter, NULL, &layout_logical);
560 /* Adjust for margins */
562 layout_logical.x += line_display->x_offset * PANGO_SCALE;
563 layout_logical.y += line_display->top_margin * PANGO_SCALE;
565 screen_width = line_display->total_width;
567 if (gtk_widget_has_focus (text_renderer->widget))
568 state = GTK_STATE_SELECTED;
570 state = GTK_STATE_ACTIVE;
572 selection = &style->base [state];
576 PangoLayoutLine *line = pango_layout_iter_get_line_readonly (iter);
577 int selection_y, selection_height;
579 PangoRectangle line_rect;
581 gboolean at_last_line;
583 pango_layout_iter_get_line_extents (iter, NULL, &line_rect);
584 baseline = pango_layout_iter_get_baseline (iter);
585 pango_layout_iter_get_line_yrange (iter, &first_y, &last_y);
587 /* Adjust for margins */
589 line_rect.x += line_display->x_offset * PANGO_SCALE;
590 line_rect.y += line_display->top_margin * PANGO_SCALE;
591 baseline += line_display->top_margin * PANGO_SCALE;
593 /* Selection is the height of the line, plus top/bottom
594 * margin if we're the first/last line
596 selection_y = y + PANGO_PIXELS (first_y) + line_display->top_margin;
597 selection_height = PANGO_PIXELS (last_y) - PANGO_PIXELS (first_y);
601 selection_y -= line_display->top_margin;
602 selection_height += line_display->top_margin;
605 at_last_line = pango_layout_iter_at_last_line (iter);
607 selection_height += line_display->bottom_margin;
611 if (selection_start_index < byte_offset &&
612 selection_end_index > line->length + byte_offset) /* All selected */
614 cairo_t *cr = text_renderer->cr;
617 gdk_cairo_set_source_color (cr, selection);
619 x + line_display->left_margin, selection_y,
620 screen_width, selection_height);
624 text_renderer_set_state (text_renderer, SELECTED);
625 pango_renderer_draw_layout_line (PANGO_RENDERER (text_renderer),
627 PANGO_SCALE * x + line_rect.x,
628 PANGO_SCALE * y + baseline);
632 if (line_display->pg_bg_color)
634 cairo_t *cr = text_renderer->cr;
638 gdk_cairo_set_source_color (cr, line_display->pg_bg_color);
640 x + line_display->left_margin, selection_y,
641 screen_width, selection_height);
647 text_renderer_set_state (text_renderer, NORMAL);
648 pango_renderer_draw_layout_line (PANGO_RENDERER (text_renderer),
650 PANGO_SCALE * x + line_rect.x,
651 PANGO_SCALE * y + baseline);
653 /* Check if some part of the line is selected; the newline
654 * that is after line->length for the last line of the
655 * paragraph counts as part of the line for this
657 if ((selection_start_index < byte_offset + line->length ||
658 (selection_start_index == byte_offset + line->length && pango_layout_iter_at_last_line (iter))) &&
659 selection_end_index > byte_offset)
661 cairo_t *cr = text_renderer->cr;
662 cairo_region_t *clip_region = get_selected_clip (text_renderer, layout, line,
663 x + line_display->x_offset,
666 selection_start_index, selection_end_index);
669 gdk_cairo_region (cr, clip_region);
671 cairo_region_destroy (clip_region);
673 gdk_cairo_set_source_color (cr, selection);
675 x + PANGO_PIXELS (line_rect.x),
677 PANGO_PIXELS (line_rect.width),
681 text_renderer_set_state (text_renderer, SELECTED);
682 pango_renderer_draw_layout_line (PANGO_RENDERER (text_renderer),
684 PANGO_SCALE * x + line_rect.x,
685 PANGO_SCALE * y + baseline);
689 /* Paint in the ends of the line */
690 if (line_rect.x > line_display->left_margin * PANGO_SCALE &&
691 ((line_display->direction == GTK_TEXT_DIR_LTR && selection_start_index < byte_offset) ||
692 (line_display->direction == GTK_TEXT_DIR_RTL && selection_end_index > byte_offset + line->length)))
696 gdk_cairo_set_source_color (cr, selection);
698 x + line_display->left_margin,
700 PANGO_PIXELS (line_rect.x) - line_display->left_margin,
707 if (line_rect.x + line_rect.width <
708 (screen_width + line_display->left_margin) * PANGO_SCALE &&
709 ((line_display->direction == GTK_TEXT_DIR_LTR && selection_end_index > byte_offset + line->length) ||
710 (line_display->direction == GTK_TEXT_DIR_RTL && selection_start_index < byte_offset)))
715 line_display->left_margin + screen_width -
716 PANGO_PIXELS (line_rect.x) - PANGO_PIXELS (line_rect.width);
720 gdk_cairo_set_source_color (cr, selection);
722 x + PANGO_PIXELS (line_rect.x) + PANGO_PIXELS (line_rect.width),
731 else if (line_display->has_block_cursor &&
732 gtk_widget_has_focus (text_renderer->widget) &&
733 byte_offset <= line_display->insert_index &&
734 (line_display->insert_index < byte_offset + line->length ||
735 (at_last_line && line_display->insert_index == byte_offset + line->length)))
737 GdkRectangle cursor_rect;
738 GdkColor cursor_color;
739 cairo_t *cr = text_renderer->cr;
741 /* we draw text using base color on filled cursor rectangle of cursor color
742 * (normally white on black) */
743 _gtk_widget_get_cursor_color (text_renderer->widget, &cursor_color);
745 cursor_rect.x = x + line_display->x_offset + line_display->block_cursor.x;
746 cursor_rect.y = y + line_display->block_cursor.y + line_display->top_margin;
747 cursor_rect.width = line_display->block_cursor.width;
748 cursor_rect.height = line_display->block_cursor.height;
752 gdk_cairo_rectangle (cr, &cursor_rect);
755 gdk_cairo_set_source_color (cr, &cursor_color);
758 /* draw text under the cursor if any */
759 if (!line_display->cursor_at_line_end)
764 style = gtk_widget_get_style (text_renderer->widget);
765 state = gtk_widget_get_state (text_renderer->widget);
766 gdk_cairo_set_source_color (cr, &style->base[state]);
768 text_renderer_set_state (text_renderer, CURSOR);
770 pango_renderer_draw_layout_line (PANGO_RENDERER (text_renderer),
772 PANGO_SCALE * x + line_rect.x,
773 PANGO_SCALE * y + baseline);
781 byte_offset += line->length;
783 while (pango_layout_iter_next_line (iter));
785 pango_layout_iter_free (iter);
788 static GtkTextRenderer *
789 get_text_renderer (void)
791 static GtkTextRenderer *text_renderer = NULL;
794 text_renderer = g_object_new (GTK_TYPE_TEXT_RENDERER, NULL);
796 return text_renderer;
800 gtk_text_layout_draw (GtkTextLayout *layout,
807 GtkTextRenderer *text_renderer;
808 GtkTextIter selection_start, selection_end;
809 gboolean have_selection = FALSE;
815 g_return_if_fail (GTK_IS_TEXT_LAYOUT (layout));
816 g_return_if_fail (layout->default_style != NULL);
817 g_return_if_fail (layout->buffer != NULL);
818 g_return_if_fail (cr != NULL);
820 if (!gdk_cairo_get_clip_rectangle (cr, &clip))
823 line_list = gtk_text_layout_get_lines (layout, clip.y, clip.y + clip.height, ¤t_y);
825 if (line_list == NULL)
826 return; /* nothing on the screen */
830 gdk_cairo_set_source_color (cr, >k_widget_get_style (widget)->text[gtk_widget_get_state (widget)]);
832 text_renderer = get_text_renderer ();
833 text_renderer_begin (text_renderer, widget, cr);
835 gtk_text_layout_wrap_loop_start (layout);
837 if (gtk_text_buffer_get_selection_bounds (layout->buffer,
840 have_selection = TRUE;
842 tmp_list = line_list;
843 while (tmp_list != NULL)
845 GtkTextLineDisplay *line_display;
846 gint selection_start_index = -1;
847 gint selection_end_index = -1;
848 gboolean have_strong;
851 GtkTextLine *line = tmp_list->data;
853 line_display = gtk_text_layout_get_line_display (layout, line, FALSE);
855 if (line_display->height > 0)
857 g_assert (line_display->layout != NULL);
861 GtkTextIter line_start, line_end;
864 gtk_text_layout_get_iter_at_line (layout,
867 line_end = line_start;
868 if (!gtk_text_iter_ends_line (&line_end))
869 gtk_text_iter_forward_to_line_end (&line_end);
870 byte_count = gtk_text_iter_get_visible_line_index (&line_end);
872 if (gtk_text_iter_compare (&selection_start, &line_end) <= 0 &&
873 gtk_text_iter_compare (&selection_end, &line_start) >= 0)
875 if (gtk_text_iter_compare (&selection_start, &line_start) >= 0)
876 selection_start_index = gtk_text_iter_get_visible_line_index (&selection_start);
878 selection_start_index = -1;
880 if (gtk_text_iter_compare (&selection_end, &line_end) <= 0)
881 selection_end_index = gtk_text_iter_get_visible_line_index (&selection_end);
883 selection_end_index = byte_count + 1; /* + 1 to flag past-the-end */
887 render_para (text_renderer, line_display,
889 selection_start_index, selection_end_index);
891 /* We paint the cursors last, because they overlap another chunk
892 and need to appear on top. */
897 cursor_list = line_display->cursors;
900 GtkTextCursorDisplay *cursor = cursor_list->data;
901 if (cursor->is_strong)
906 cursor_list = cursor_list->next;
909 cursor_list = line_display->cursors;
912 GtkTextCursorDisplay *cursor = cursor_list->data;
913 GtkTextDirection dir;
914 GdkRectangle cursor_location;
916 dir = line_display->direction;
917 if (have_strong && have_weak)
919 if (!cursor->is_strong)
920 dir = (dir == GTK_TEXT_DIR_RTL) ? GTK_TEXT_DIR_LTR : GTK_TEXT_DIR_RTL;
923 cursor_location.x = line_display->x_offset + cursor->x;
924 cursor_location.y = current_y + line_display->top_margin + cursor->y;
925 cursor_location.width = 0;
926 cursor_location.height = cursor->height;
928 gtk_draw_insertion_cursor (widget, cr, &cursor_location,
930 dir, have_strong && have_weak);
932 cursor_list = cursor_list->next;
934 } /* line_display->height > 0 */
936 current_y += line_display->height;
937 gtk_text_layout_free_line_display (layout, line_display);
939 tmp_list = g_slist_next (tmp_list);
942 gtk_text_layout_wrap_loop_end (layout);
944 tmp_widgets = text_renderer_end (text_renderer);
946 *widgets = tmp_widgets;
949 g_list_foreach (tmp_widgets, (GFunc)g_object_unref, NULL);
950 g_list_free (tmp_widgets);
955 g_slist_free (line_list);