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textview: Translate the cairo context instead of keeping y value

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This avoids overflow when transforming a large value to a pango unit.
To reproduce the problem:
seq 200000 > test.txt && tets/print-editor test.txt
Then scroll to around line 140.000 to see it (depends on font size of
course).
This commit is contained in:
Benjamin Otte
2011-02-20 23:29:49 +01:00
parent 608c1e40eb
commit c647085e76
1 changed files with 8 additions and 5 deletions
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13
gtk/gtktextdisplay.c
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@ -847,7 +847,7 @@ gtk_text_layout_draw (GtkTextLayout *layout,
cairo_t *cr,
GList **widgets)
{
gint current_y;
gint offset_y;
GSList *cursor_list;
GtkTextRenderer *text_renderer;
GtkTextIter selection_start, selection_end;
@ -865,7 +865,7 @@ gtk_text_layout_draw (GtkTextLayout *layout,
if (!gdk_cairo_get_clip_rectangle (cr, &clip))
return;
line_list = gtk_text_layout_get_lines (layout, clip.y, clip.y + clip.height, &current_y);
line_list = gtk_text_layout_get_lines (layout, clip.y, clip.y + clip.height, &offset_y);
if (line_list == NULL)
return; /* nothing on the screen */
@ -873,6 +873,9 @@ gtk_text_layout_draw (GtkTextLayout *layout,
text_renderer = get_text_renderer ();
text_renderer_begin (text_renderer, widget, cr);
/* text_renderer_begin/end does cairo_save/restore */
cairo_translate (cr, 0, offset_y);
gtk_text_layout_wrap_loop_start (layout);
if (gtk_text_buffer_get_selection_bounds (layout->buffer,
@ -926,7 +929,7 @@ gtk_text_layout_draw (GtkTextLayout *layout,
}
render_para (text_renderer, line_display,
0, current_y,
0, 0,
selection_start_index, selection_end_index);
/* We paint the cursors last, because they overlap another chunk
@ -962,7 +965,7 @@ gtk_text_layout_draw (GtkTextLayout *layout,
}
cursor_location.x = line_display->x_offset + cursor->x;
cursor_location.y = current_y + line_display->top_margin + cursor->y;
cursor_location.y = line_display->top_margin + cursor->y;
cursor_location.width = 0;
cursor_location.height = cursor->height;
@ -974,7 +977,7 @@ gtk_text_layout_draw (GtkTextLayout *layout,
}
} /* line_display->height > 0 */
current_y += line_display->height;
cairo_translate (cr, 0, line_display->height);
gtk_text_layout_free_line_display (layout, line_display);
tmp_list = g_slist_next (tmp_list);