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Merge branch 'wip/chergert/textview-caching' into 'master'

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textlayout: introduce caching for GtkTextLineDisplay

See merge request GNOME/gtk!1025
This commit is contained in:
Matthias Clasen 2019-07-28 20:32:56 +00:00
commit ade40a7a0c
7 changed files with 1070 additions and 216 deletions
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19
gtk/gtktextiter.c
View File

@ -5358,6 +5358,25 @@ gtk_text_iter_equal (const GtkTextIter *lhs,
}
}
gboolean
_gtk_text_iter_same_line (const GtkTextIter *lhs,
const GtkTextIter *rhs)
{
GtkTextRealIter *real_lhs;
GtkTextRealIter *real_rhs;
real_lhs = gtk_text_iter_make_surreal (lhs);
real_rhs = gtk_text_iter_make_surreal (rhs);
if (real_lhs == NULL || real_rhs == NULL)
return FALSE;
check_invariants (lhs);
check_invariants (rhs);
return real_lhs->line == real_rhs->line;
}
/**
* gtk_text_iter_compare:
* @lhs: a #GtkTextIter

2
gtk/gtktextiterprivate.h
View File

@ -41,6 +41,8 @@ gboolean _gtk_text_iter_forward_indexable_segment (GtkTextIter
gboolean _gtk_text_iter_backward_indexable_segment (GtkTextIter *iter);
gint _gtk_text_iter_get_segment_byte (const GtkTextIter *iter);
gint _gtk_text_iter_get_segment_char (const GtkTextIter *iter);
gboolean _gtk_text_iter_same_line (const GtkTextIter *lhs,
const GtkTextIter *rhs);
gboolean gtk_text_iter_get_attributes (const GtkTextIter *iter,
GtkTextAttributes *values);

464
gtk/gtktextlayout.c
View File

@ -82,6 +82,7 @@
#include "gtktextbtree.h"
#include "gtktextbufferprivate.h"
#include "gtktextiterprivate.h"
#include "gtktextlinedisplaycacheprivate.h"
#include "gtktextutil.h"
#include "gskpango.h"
#include "gtkintl.h"
@ -101,6 +102,9 @@ struct _GtkTextLayoutPrivate
direction only influences the direction of the cursor line.
*/
GtkTextLine *cursor_line;
/* Cache for GtkTextLineDisplay to reduce overhead creating layouts */
GtkTextLineDisplayCache *cache;
};
static GtkTextLineData *gtk_text_layout_real_wrap (GtkTextLayout *layout,
@ -133,19 +137,33 @@ static void gtk_text_layout_invalidate_all (GtkTextLayout *layout);
static PangoAttribute *gtk_text_attr_appearance_new (const GtkTextAppearance *appearance);
static void gtk_text_layout_mark_set_handler (GtkTextBuffer *buffer,
const GtkTextIter *location,
GtkTextMark *mark,
gpointer data);
static void gtk_text_layout_buffer_insert_text (GtkTextBuffer *textbuffer,
GtkTextIter *iter,
gchar *str,
gint len,
gpointer data);
static void gtk_text_layout_buffer_delete_range (GtkTextBuffer *textbuffer,
GtkTextIter *start,
GtkTextIter *end,
gpointer data);
static void gtk_text_layout_after_mark_set_handler (GtkTextBuffer *buffer,
const GtkTextIter *location,
GtkTextMark *mark,
gpointer data);
static void gtk_text_layout_after_buffer_insert_text (GtkTextBuffer *textbuffer,
GtkTextIter *iter,
gchar *str,
gint len,
gpointer data);
static void gtk_text_layout_after_buffer_delete_range (GtkTextBuffer *textbuffer,
GtkTextIter *start,
GtkTextIter *end,
gpointer data);
static void gtk_text_layout_before_mark_set_handler (GtkTextBuffer *buffer,
const GtkTextIter *location,
GtkTextMark *mark,
gpointer data);
static void gtk_text_layout_before_buffer_insert_text (GtkTextBuffer *textbuffer,
GtkTextIter *iter,
gchar *str,
gint len,
gpointer data);
static void gtk_text_layout_before_buffer_delete_range (GtkTextBuffer *textbuffer,
GtkTextIter *start,
GtkTextIter *end,
gpointer data);
static void gtk_text_layout_update_cursor_line (GtkTextLayout *layout);
@ -182,9 +200,10 @@ G_DEFINE_TYPE_WITH_PRIVATE (GtkTextLayout, gtk_text_layout, G_TYPE_OBJECT)
static void
gtk_text_layout_dispose (GObject *object)
{
GtkTextLayout *layout;
GtkTextLayout *layout = GTK_TEXT_LAYOUT (object);
GtkTextLayoutPrivate *priv = GTK_TEXT_LAYOUT_GET_PRIVATE (layout);
layout = GTK_TEXT_LAYOUT (object);
g_clear_pointer (&priv->cache, gtk_text_line_display_cache_free);
gtk_text_layout_set_buffer (layout, NULL);
@ -197,8 +216,6 @@ gtk_text_layout_dispose (GObject *object)
g_clear_object (&layout->ltr_context);
g_clear_object (&layout->rtl_context);
g_clear_pointer (&layout->one_display_cache, gtk_text_line_display_unref);
if (layout->preedit_attrs != NULL)
{
pango_attr_list_unref (layout->preedit_attrs);
@ -275,7 +292,10 @@ gtk_text_layout_class_init (GtkTextLayoutClass *klass)
static void
gtk_text_layout_init (GtkTextLayout *text_layout)
{
GtkTextLayoutPrivate *priv = GTK_TEXT_LAYOUT_GET_PRIVATE (text_layout);
text_layout->cursor_visible = TRUE;
priv->cache = gtk_text_line_display_cache_new ();
}
GtkTextLayout*
@ -315,14 +335,24 @@ gtk_text_layout_set_buffer (GtkTextLayout *layout,
_gtk_text_btree_remove_view (_gtk_text_buffer_get_btree (layout->buffer),
layout);
g_signal_handlers_disconnect_by_func (layout->buffer,
G_CALLBACK (gtk_text_layout_mark_set_handler),
g_signal_handlers_disconnect_by_func (layout->buffer,
G_CALLBACK (gtk_text_layout_after_mark_set_handler),
layout);
g_signal_handlers_disconnect_by_func (layout->buffer,
G_CALLBACK (gtk_text_layout_buffer_insert_text),
g_signal_handlers_disconnect_by_func (layout->buffer,
G_CALLBACK (gtk_text_layout_after_buffer_insert_text),
layout);
g_signal_handlers_disconnect_by_func (layout->buffer,
G_CALLBACK (gtk_text_layout_buffer_delete_range),
g_signal_handlers_disconnect_by_func (layout->buffer,
G_CALLBACK (gtk_text_layout_after_buffer_delete_range),
layout);
g_signal_handlers_disconnect_by_func (layout->buffer,
G_CALLBACK (gtk_text_layout_before_mark_set_handler),
layout);
g_signal_handlers_disconnect_by_func (layout->buffer,
G_CALLBACK (gtk_text_layout_before_buffer_insert_text),
layout);
g_signal_handlers_disconnect_by_func (layout->buffer,
G_CALLBACK (gtk_text_layout_before_buffer_delete_range),
layout);
g_object_unref (layout->buffer);
@ -339,11 +369,18 @@ gtk_text_layout_set_buffer (GtkTextLayout *layout,
/* Bind to all signals that move the insert mark. */
g_signal_connect_after (layout->buffer, "mark-set",
G_CALLBACK (gtk_text_layout_mark_set_handler), layout);
G_CALLBACK (gtk_text_layout_after_mark_set_handler), layout);
g_signal_connect_after (layout->buffer, "insert-text",
G_CALLBACK (gtk_text_layout_buffer_insert_text), layout);
G_CALLBACK (gtk_text_layout_after_buffer_insert_text), layout);
g_signal_connect_after (layout->buffer, "delete-range",
G_CALLBACK (gtk_text_layout_buffer_delete_range), layout);
G_CALLBACK (gtk_text_layout_after_buffer_delete_range), layout);
g_signal_connect (layout->buffer, "mark-set",
G_CALLBACK (gtk_text_layout_before_mark_set_handler), layout);
g_signal_connect (layout->buffer, "insert-text",
G_CALLBACK (gtk_text_layout_before_buffer_insert_text), layout);
g_signal_connect (layout->buffer, "delete-range",
G_CALLBACK (gtk_text_layout_before_buffer_delete_range), layout);
gtk_text_layout_update_cursor_line (layout);
}
@ -627,46 +664,26 @@ gtk_text_layout_emit_changed (GtkTextLayout *layout,
g_signal_emit (layout, signals[CHANGED], 0, y, old_height, new_height);
}
static void
text_layout_changed (GtkTextLayout *layout,
gint y,
gint old_height,
gint new_height,
gboolean cursors_only)
{
/* Check if the range intersects our cached line display,
* and invalidate the cached line if so.
*/
if (layout->one_display_cache)
{
GtkTextLine *line = layout->one_display_cache->line;
gint cache_y = _gtk_text_btree_find_line_top (_gtk_text_buffer_get_btree (layout->buffer),
line, layout);
gint cache_height = layout->one_display_cache->height;
if (cache_y + cache_height > y && cache_y < y + old_height)
gtk_text_layout_invalidate_cache (layout, line, cursors_only);
}
gtk_text_layout_emit_changed (layout, y, old_height, new_height);
}
void
gtk_text_layout_changed (GtkTextLayout *layout,
gint y,
gint old_height,
gint new_height)
{
text_layout_changed (layout, y, old_height, new_height, FALSE);
GtkTextLayoutPrivate *priv = GTK_TEXT_LAYOUT_GET_PRIVATE (layout);
gtk_text_line_display_cache_invalidate_y_range (priv->cache, layout, y, old_height, FALSE);
gtk_text_layout_emit_changed (layout, y, old_height, new_height);
}
void
gtk_text_layout_cursors_changed (GtkTextLayout *layout,
gint y,
gint old_height,
gint new_height)
gint old_height,
gint new_height)
{
text_layout_changed (layout, y, old_height, new_height, TRUE);
GtkTextLayoutPrivate *priv = GTK_TEXT_LAYOUT_GET_PRIVATE (layout);
gtk_text_line_display_cache_invalidate_y_range (priv->cache, layout, y, old_height, TRUE);
gtk_text_layout_emit_changed (layout, y, old_height, new_height);
}
void
@ -819,20 +836,16 @@ gtk_text_layout_invalidate_cache (GtkTextLayout *layout,
GtkTextLine *line,
gboolean cursors_only)
{
if (layout->one_display_cache && line == layout->one_display_cache->line)
GtkTextLayoutPrivate *priv = GTK_TEXT_LAYOUT_GET_PRIVATE (layout);
g_assert (GTK_IS_TEXT_LAYOUT (layout));
if (priv->cache != NULL)
{
if (cursors_only)
{
GtkTextLineDisplay *display = layout->one_display_cache;
g_clear_pointer (&display->cursors, g_array_unref);
display->cursors_invalid = TRUE;
display->has_block_cursor = FALSE;
}
gtk_text_line_display_cache_invalidate_cursors (priv->cache, line);
else
{
g_clear_pointer (&layout->one_display_cache, gtk_text_line_display_unref);
}
gtk_text_line_display_cache_invalidate_line (priv->cache, line);
}
}
@ -840,7 +853,7 @@ gtk_text_layout_invalidate_cache (GtkTextLayout *layout,
*/
static void
gtk_text_layout_invalidate_cursor_line (GtkTextLayout *layout,
gboolean cursors_only)
gboolean cursors_only)
{
GtkTextLayoutPrivate *priv = GTK_TEXT_LAYOUT_GET_PRIVATE (layout);
GtkTextLineData *line_data;
@ -849,22 +862,20 @@ gtk_text_layout_invalidate_cursor_line (GtkTextLayout *layout,
return;
line_data = _gtk_text_line_get_data (priv->cursor_line, layout);
if (line_data)
if (line_data != NULL)
{
if (cursors_only)
gtk_text_layout_invalidate_cache (layout, priv->cursor_line, TRUE);
else
{
gtk_text_layout_invalidate_cache (layout, priv->cursor_line, FALSE);
_gtk_text_line_invalidate_wrap (priv->cursor_line, line_data);
}
gtk_text_layout_invalidate_cache (layout, priv->cursor_line, cursors_only);
if (!cursors_only)
_gtk_text_line_invalidate_wrap (priv->cursor_line, line_data);
gtk_text_layout_invalidated (layout);
}
}
static void
gtk_text_layout_update_cursor_line(GtkTextLayout *layout)
gtk_text_layout_update_cursor_line (GtkTextLayout *layout)
{
GtkTextLayoutPrivate *priv = GTK_TEXT_LAYOUT_GET_PRIVATE (layout);
GtkTextIter iter;
@ -873,6 +884,8 @@ gtk_text_layout_update_cursor_line(GtkTextLayout *layout)
gtk_text_buffer_get_insert (layout->buffer));
priv->cursor_line = _gtk_text_iter_get_text_line (&iter);
gtk_text_line_display_cache_set_cursor_line (priv->cache, priv->cursor_line);
}
static void
@ -924,34 +937,8 @@ gtk_text_layout_real_invalidate_cursors (GtkTextLayout *layout,
const GtkTextIter *start,
const GtkTextIter *end)
{
/* Check if the range intersects our cached line display,
* and invalidate the cached line if so.
*/
if (layout->one_display_cache)
{
GtkTextIter line_start, line_end;
GtkTextLine *line = layout->one_display_cache->line;
gtk_text_layout_get_iter_at_line (layout, &line_start, line, 0);
line_end = line_start;
if (!gtk_text_iter_ends_line (&line_end))
gtk_text_iter_forward_to_line_end (&line_end);
if (gtk_text_iter_compare (start, end) > 0)
{
const GtkTextIter *tmp = start;
start = end;
end = tmp;
}
if (gtk_text_iter_compare (&line_start, end) <= 0 &&
gtk_text_iter_compare (start, &line_end) <= 0)
{
gtk_text_layout_invalidate_cache (layout, line, TRUE);
}
}
GtkTextLayoutPrivate *priv = GTK_TEXT_LAYOUT_GET_PRIVATE (layout);
gtk_text_line_display_cache_invalidate_range (priv->cache, layout, start, end, TRUE);
gtk_text_layout_invalidated (layout);
}
@ -2122,10 +2109,10 @@ add_preedit_attrs (GtkTextLayout *layout,
/* Iterate over the line and fill in display->cursors.
* It’s a stripped copy of gtk_text_layout_get_line_display() */
static void
update_text_display_cursors (GtkTextLayout *layout,
GtkTextLine *line,
GtkTextLineDisplay *display)
void
gtk_text_layout_update_display_cursors (GtkTextLayout *layout,
GtkTextLine *line,
GtkTextLineDisplay *display)
{
GtkTextLineSegment *seg;
GtkTextIter iter;
@ -2275,9 +2262,9 @@ tags_array_toggle_tag (GPtrArray *array,
}
GtkTextLineDisplay *
gtk_text_layout_get_line_display (GtkTextLayout *layout,
GtkTextLine *line,
gboolean size_only)
gtk_text_layout_create_display (GtkTextLayout *layout,
GtkTextLine *line,
gboolean size_only)
{
GtkTextLayoutPrivate *priv = GTK_TEXT_LAYOUT_GET_PRIVATE (layout);
GtkTextLineDisplay *display;
@ -2305,26 +2292,10 @@ gtk_text_layout_get_line_display (GtkTextLayout *layout,
g_return_val_if_fail (line != NULL, NULL);
if (layout->one_display_cache)
{
if (line == layout->one_display_cache->line &&
(size_only || !layout->one_display_cache->size_only))
{
if (!size_only)
update_text_display_cursors (layout, line, layout->one_display_cache);
return gtk_text_line_display_ref (layout->one_display_cache);
}
else
{
g_clear_pointer (&layout->one_display_cache, gtk_text_line_display_unref);
}
}
DV (g_print ("creating one line display cache (%s)\n", G_STRLOC));
display = g_rc_box_new0 (GtkTextLineDisplay);
display->size_only = size_only;
display->mru_link.data = display;
display->size_only = !!size_only;
display->line = line;
display->insert_index = -1;
@ -2335,7 +2306,7 @@ gtk_text_layout_get_line_display (GtkTextLayout *layout,
if (totally_invisible_line (layout, line, &iter))
{
display->layout = pango_layout_new (layout->ltr_context);
return display;
return g_steal_pointer (&display);
}
/* Find the bidi base direction */
@ -2347,7 +2318,7 @@ gtk_text_layout_get_line_display (GtkTextLayout *layout,
line->dir_strong == PANGO_DIRECTION_NEUTRAL)
{
base_dir = (layout->keyboard_direction == GTK_TEXT_DIR_LTR) ?
PANGO_DIRECTION_LTR : PANGO_DIRECTION_RTL;
PANGO_DIRECTION_LTR : PANGO_DIRECTION_RTL;
}
/* Allocate space for flat text for buffer
@ -2371,7 +2342,7 @@ gtk_text_layout_get_line_display (GtkTextLayout *layout,
seg->type == &gtk_text_child_type)
{
style = get_style (layout, tags);
initial_toggle_segments = FALSE;
initial_toggle_segments = FALSE;
/* We have to delay setting the paragraph values until we
* hit the first texture or text segment because toggles at
@ -2401,9 +2372,9 @@ gtk_text_layout_get_line_display (GtkTextLayout *layout,
*/
gint bytes = 0;
GtkTextLineSegment *prev_seg = NULL;
GtkTextLineSegment *prev_seg = NULL;
while (seg)
while (seg)
{
if (seg->type == &gtk_text_char_type)
{
@ -2412,35 +2383,35 @@ gtk_text_layout_get_line_display (GtkTextLayout *layout,
buffer_byte_offset += seg->byte_count;
bytes += seg->byte_count;
}
else if (seg->type == &gtk_text_right_mark_type ||
seg->type == &gtk_text_left_mark_type)
else if (seg->type == &gtk_text_right_mark_type ||
seg->type == &gtk_text_left_mark_type)
{
/* If we have preedit string, break out of this loop - we'll almost
* certainly have different attributes on the preedit string
*/
/* If we have preedit string, break out of this loop - we'll almost
* certainly have different attributes on the preedit string
*/
if (layout->preedit_len > 0 &&
_gtk_text_btree_mark_is_insert (_gtk_text_buffer_get_btree (layout->buffer),
seg->body.mark.obj))
break;
if (layout->preedit_len > 0 &&
_gtk_text_btree_mark_is_insert (_gtk_text_buffer_get_btree (layout->buffer),
seg->body.mark.obj))
break;
if (seg->body.mark.visible)
{
cursor_byte_offsets = g_slist_prepend (cursor_byte_offsets, GINT_TO_POINTER (layout_byte_offset));
cursor_segs = g_slist_prepend (cursor_segs, seg);
if (_gtk_text_btree_mark_is_insert (_gtk_text_buffer_get_btree (layout->buffer),
seg->body.mark.obj))
display->insert_index = layout_byte_offset;
}
if (seg->body.mark.visible)
{
cursor_byte_offsets = g_slist_prepend (cursor_byte_offsets, GINT_TO_POINTER (layout_byte_offset));
cursor_segs = g_slist_prepend (cursor_segs, seg);
if (_gtk_text_btree_mark_is_insert (_gtk_text_buffer_get_btree (layout->buffer),
seg->body.mark.obj))
display->insert_index = layout_byte_offset;
}
}
else
break;
else
break;
prev_seg = seg;
prev_seg = seg;
seg = seg->next;
}
seg = prev_seg; /* Back up one */
seg = prev_seg; /* Back up one */
add_generic_attrs (layout, &style->appearance,
bytes,
attrs, layout_byte_offset - bytes,
@ -2503,42 +2474,42 @@ gtk_text_layout_get_line_display (GtkTextLayout *layout,
/* Style may have changed, drop our
current cached style */
invalidate_cached_style (layout);
/* Add the tag only after we have seen some non-toggle non-mark segment,
* otherwise the tag is already accounted for by _gtk_text_btree_get_tags(). */
if (!initial_toggle_segments)
tags = tags_array_toggle_tag (tags, seg->body.toggle.info->tag);
/* Add the tag only after we have seen some non-toggle non-mark segment,
* otherwise the tag is already accounted for by _gtk_text_btree_get_tags(). */
if (!initial_toggle_segments)
tags = tags_array_toggle_tag (tags, seg->body.toggle.info->tag);
}
/* Marks */
else if (seg->type == &gtk_text_right_mark_type ||
seg->type == &gtk_text_left_mark_type)
{
gint cursor_offset = 0;
/* At the insertion point, add the preedit string, if any */
if (_gtk_text_btree_mark_is_insert (_gtk_text_buffer_get_btree (layout->buffer),
seg->body.mark.obj))
{
display->insert_index = layout_byte_offset;
if (layout->preedit_len > 0)
{
text_allocated += layout->preedit_len;
text = g_realloc (text, text_allocated);
gint cursor_offset = 0;
/* At the insertion point, add the preedit string, if any */
if (_gtk_text_btree_mark_is_insert (_gtk_text_buffer_get_btree (layout->buffer),
seg->body.mark.obj))
{
display->insert_index = layout_byte_offset;
if (layout->preedit_len > 0)
{
text_allocated += layout->preedit_len;
text = g_realloc (text, text_allocated);
style = get_style (layout, tags);
add_preedit_attrs (layout, style, attrs, layout_byte_offset, size_only);
release_style (layout, style);
style = get_style (layout, tags);
add_preedit_attrs (layout, style, attrs, layout_byte_offset, size_only);
release_style (layout, style);
memcpy (text + layout_byte_offset, layout->preedit_string, layout->preedit_len);
layout_byte_offset += layout->preedit_len;
memcpy (text + layout_byte_offset, layout->preedit_string, layout->preedit_len);
layout_byte_offset += layout->preedit_len;
/* DO NOT increment the buffer byte offset for preedit */
cursor_offset = layout->preedit_cursor - layout->preedit_len;
}
}
cursor_offset = layout->preedit_cursor - layout->preedit_len;
}
}
/* Display visible marks */
@ -2623,17 +2594,17 @@ gtk_text_layout_get_line_display (GtkTextLayout *layout,
gint excess = display->total_width - text_pixel_width;
switch (pango_layout_get_alignment (display->layout))
{
case PANGO_ALIGN_LEFT:
{
case PANGO_ALIGN_LEFT:
default:
break;
case PANGO_ALIGN_CENTER:
display->x_offset += excess / 2;
break;
case PANGO_ALIGN_RIGHT:
display->x_offset += excess;
break;
}
break;
case PANGO_ALIGN_CENTER:
display->x_offset += excess / 2;
break;
case PANGO_ALIGN_RIGHT:
display->x_offset += excess;
break;
}
}
/* Free this if we aren't in a loop */
@ -2645,19 +2616,31 @@ gtk_text_layout_get_line_display (GtkTextLayout *layout,
if (tags != NULL)
g_ptr_array_free (tags, TRUE);
g_assert (layout->one_display_cache == NULL);
layout->one_display_cache = gtk_text_line_display_ref (display);
if (saw_widget)
allocate_child_widgets (layout, display);
return display;
return g_steal_pointer (&display);
}
GtkTextLineDisplay *
gtk_text_layout_get_line_display (GtkTextLayout *layout,
GtkTextLine *line,
gboolean size_only)
{
GtkTextLayoutPrivate *priv = GTK_TEXT_LAYOUT_GET_PRIVATE (layout);
return gtk_text_line_display_cache_get (priv->cache, layout, line, size_only);
}
static void
gtk_text_line_display_finalize (GtkTextLineDisplay *display)
{
g_assert (display != NULL);
g_assert (display->cache_iter == NULL);
g_assert (display->mru_link.prev == NULL);
g_assert (display->mru_link.next == NULL);
g_assert (display->mru_link.data == display);
g_clear_object (&display->layout);
g_clear_pointer (&display->cursors, g_array_unref);
}
@ -3784,26 +3767,57 @@ gtk_text_layout_spew (GtkTextLayout *layout)
#endif
}
static void
gtk_text_layout_before_mark_set_handler (GtkTextBuffer *buffer,
const GtkTextIter *location,
GtkTextMark *mark,
gpointer data)
{
GtkTextLayout *layout = GTK_TEXT_LAYOUT (data);
GtkTextLayoutPrivate *priv = GTK_TEXT_LAYOUT_GET_PRIVATE (layout);
if (mark == gtk_text_buffer_get_insert (buffer))
gtk_text_line_display_cache_set_cursor_line (priv->cache, NULL);
}
/* Catch all situations that move the insertion point.
*/
static void
gtk_text_layout_mark_set_handler (GtkTextBuffer *buffer,
const GtkTextIter *location,
GtkTextMark *mark,
gpointer data)
gtk_text_layout_after_mark_set_handler (GtkTextBuffer *buffer,
const GtkTextIter *location,
GtkTextMark *mark,
gpointer data)
{
GtkTextLayout *layout = GTK_TEXT_LAYOUT (data);
GtkTextLayoutPrivate *priv = GTK_TEXT_LAYOUT_GET_PRIVATE (layout);
if (mark == gtk_text_buffer_get_insert (buffer))
gtk_text_layout_update_cursor_line (layout);
{
gtk_text_layout_update_cursor_line (layout);
gtk_text_line_display_cache_set_cursor_line (priv->cache, priv->cursor_line);
}
}
static void
gtk_text_layout_buffer_insert_text (GtkTextBuffer *textbuffer,
GtkTextIter *iter,
gchar *str,
gint len,
gpointer data)
gtk_text_layout_before_buffer_insert_text (GtkTextBuffer *textbuffer,
GtkTextIter *iter,
gchar *str,
gint len,
gpointer data)
{
GtkTextLayout *layout = GTK_TEXT_LAYOUT (data);
GtkTextLayoutPrivate *priv = GTK_TEXT_LAYOUT_GET_PRIVATE (layout);
GtkTextLine *line = _gtk_text_iter_get_text_line (iter);
gtk_text_line_display_cache_invalidate_line (priv->cache, line);
}
static void
gtk_text_layout_after_buffer_insert_text (GtkTextBuffer *textbuffer,
GtkTextIter *iter,
gchar *str,
gint len,
gpointer data)
{
GtkTextLayout *layout = GTK_TEXT_LAYOUT (data);
@ -3811,10 +3825,22 @@ gtk_text_layout_buffer_insert_text (GtkTextBuffer *textbuffer,
}
static void
gtk_text_layout_buffer_delete_range (GtkTextBuffer *textbuffer,
GtkTextIter *start,
GtkTextIter *end,
gpointer data)
gtk_text_layout_before_buffer_delete_range (GtkTextBuffer *textbuffer,
GtkTextIter *start,
GtkTextIter *end,
gpointer data)
{
GtkTextLayout *layout = GTK_TEXT_LAYOUT (data);
GtkTextLayoutPrivate *priv = GTK_TEXT_LAYOUT_GET_PRIVATE (layout);
gtk_text_line_display_cache_invalidate_range (priv->cache, layout, start, end, FALSE);
}
static void
gtk_text_layout_after_buffer_delete_range (GtkTextBuffer *textbuffer,
GtkTextIter *start,
GtkTextIter *end,
gpointer data)
{
GtkTextLayout *layout = GTK_TEXT_LAYOUT (data);
@ -4041,6 +4067,7 @@ gtk_text_layout_snapshot (GtkTextLayout *layout,
const GdkRectangle *clip,
float cursor_alpha)
{
GtkTextLayoutPrivate *priv;
GskPangoRenderer *crenderer;
GtkStyleContext *context;
gint offset_y;
@ -4055,6 +4082,8 @@ gtk_text_layout_snapshot (GtkTextLayout *layout,
g_return_if_fail (layout->buffer != NULL);
g_return_if_fail (snapshot != NULL);
priv = GTK_TEXT_LAYOUT_GET_PRIVATE (layout);
context = gtk_widget_get_style_context (widget);
gtk_style_context_get_color (context, &color);
@ -4155,7 +4184,24 @@ gtk_text_layout_snapshot (GtkTextLayout *layout,
gtk_text_layout_wrap_loop_end (layout);
/* Only update eviction source once per snapshot */
gtk_text_line_display_cache_delay_eviction (priv->cache);
g_slist_free (line_list);
gsk_pango_renderer_release (crenderer);
}
gint
gtk_text_line_display_compare (const GtkTextLineDisplay *display1,
const GtkTextLineDisplay *display2,
GtkTextLayout *layout)
{
GtkTextIter iter1;
GtkTextIter iter2;
gtk_text_layout_get_iter_at_line (layout, &iter1, display1->line, 0);
gtk_text_layout_get_iter_at_line (layout, &iter2, display2->line, 0);
return gtk_text_iter_compare (&iter1, &iter2);
}

25
gtk/gtktextlayoutprivate.h
View File

@ -138,11 +138,6 @@ struct _GtkTextLayout
* over long runs with the same style. */
GtkTextAttributes *one_style_cache;
/* A cache of one line display. Getting the same line
* many times in a row is the most common case.
*/
GtkTextLineDisplay *one_display_cache;
/* Whether we are allowed to wrap right now */
gint wrap_loop_count;
@ -223,6 +218,12 @@ struct _GtkTextLineDisplay
PangoLayout *layout;
GArray *cursors; /* indexes of cursors in the PangoLayout */
/* GSequenceIter backpointer for use within cache */
GSequenceIter *cache_iter;
/* GQueue link for use in MRU to help cull cache */
GList mru_link;
GtkTextDirection direction;
gint width; /* Width of layout */
@ -298,8 +299,12 @@ void gtk_text_layout_wrap_loop_end (GtkTextLayout *layout);
GtkTextLineDisplay* gtk_text_layout_get_line_display (GtkTextLayout *layout,
GtkTextLine *line,
gboolean size_only);
GtkTextLineDisplay *gtk_text_line_display_ref (GtkTextLineDisplay *display);
void gtk_text_line_display_unref (GtkTextLineDisplay *display);
GtkTextLineDisplay *gtk_text_line_display_ref (GtkTextLineDisplay *display);
void gtk_text_line_display_unref (GtkTextLineDisplay *display);
gint gtk_text_line_display_compare (const GtkTextLineDisplay *display1,
const GtkTextLineDisplay *display2,
GtkTextLayout *layout);
void gtk_text_layout_get_line_at_y (GtkTextLayout *layout,
GtkTextIter *target_iter,
@ -354,6 +359,12 @@ void gtk_text_layout_get_cursor_locations (GtkTextLayout *layout,
GtkTextIter *iter,
GdkRectangle *strong_pos,
GdkRectangle *weak_pos);
GtkTextLineDisplay *gtk_text_layout_create_display (GtkTextLayout *layout,
GtkTextLine *line,
gboolean size_only);
void gtk_text_layout_update_display_cursors (GtkTextLayout *layout,
GtkTextLine *line,
GtkTextLineDisplay *display);
gboolean _gtk_text_layout_get_block_cursor (GtkTextLayout *layout,
GdkRectangle *pos);
gboolean gtk_text_layout_clamp_iter_to_vrange (GtkTextLayout *layout,

716
gtk/gtktextlinedisplaycache.c Normal file
View File

@ -0,0 +1,716 @@
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
* Copyright (C) 2019 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gtktextbtree.h"
#include "gtktextbufferprivate.h"
#include "gtktextiterprivate.h"
#include "gtktextlinedisplaycacheprivate.h"
#define MRU_MAX_SIZE 250
#define BLOW_CACHE_TIMEOUT_SEC 20
#define DEBUG_LINE_DISPLAY_CACHE 0
struct _GtkTextLineDisplayCache
{
GSequence *sorted_by_line;
GHashTable *line_to_display;
GtkTextLine *cursor_line;
GQueue mru;
GSource *evict_source;
#if DEBUG_LINE_DISPLAY_CACHE
guint log_source;
gint hits;
gint misses;
gint inval;
gint inval_cursors;
gint inval_by_line;
gint inval_by_range;
gint inval_by_y_range;
#endif
};
#if DEBUG_LINE_DISPLAY_CACHE
# define STAT_ADD(val,n) ((val) += n)
# define STAT_INC(val) STAT_ADD(val,1)
static gboolean
dump_stats (gpointer data)
{
GtkTextLineDisplayCache *cache = data;
g_printerr ("%p: size=%u hits=%d misses=%d inval_total=%d "
"inval_cursors=%d inval_by_line=%d "
"inval_by_range=%d inval_by_y_range=%d\n",
cache, g_hash_table_size (cache->line_to_display),
cache->hits, cache->misses,
cache->inval, cache->inval_cursors,
cache->inval_by_line, cache->inval_by_range,
cache->inval_by_y_range);
return G_SOURCE_CONTINUE;
}
#else
# define STAT_ADD(val,n)
# define STAT_INC(val)
#endif
GtkTextLineDisplayCache *
gtk_text_line_display_cache_new (void)
{
GtkTextLineDisplayCache *ret;
ret = g_slice_new0 (GtkTextLineDisplayCache);
ret->sorted_by_line = g_sequence_new ((GDestroyNotify)gtk_text_line_display_unref);
ret->line_to_display = g_hash_table_new (NULL, NULL);
#if DEBUG_LINE_DISPLAY_CACHE
ret->log_source = g_timeout_add_seconds (1, dump_stats, ret);
#endif
return g_steal_pointer (&ret);
}
void
gtk_text_line_display_cache_free (GtkTextLineDisplayCache *cache)
{
#if DEBUG_LINE_DISPLAY_CACHE
g_clear_handle_id (&cache->log_source, g_source_remove);
#endif
g_clear_pointer (&cache->evict_source, g_source_destroy);
g_clear_pointer (&cache->sorted_by_line, g_sequence_free);
g_clear_pointer (&cache->line_to_display, g_hash_table_unref);
g_slice_free (GtkTextLineDisplayCache, cache);
}
static gboolean
gtk_text_line_display_cache_blow_cb (gpointer data)
{
GtkTextLineDisplayCache *cache = data;
g_assert (cache != NULL);
#if DEBUG_LINE_DISPLAY_CACHE
g_printerr ("Evicting GtkTextLineDisplayCache\n");
#endif
cache->evict_source = NULL;
gtk_text_line_display_cache_invalidate (cache);
return G_SOURCE_REMOVE;
}
void
gtk_text_line_display_cache_delay_eviction (GtkTextLineDisplayCache *cache)
{
g_assert (cache != NULL);
if (cache->evict_source != NULL)
{
gint64 deadline;
deadline = g_get_monotonic_time () + (BLOW_CACHE_TIMEOUT_SEC * G_USEC_PER_SEC);
g_source_set_ready_time (cache->evict_source, deadline);
}
else
{
guint tag;
tag = g_timeout_add_seconds (BLOW_CACHE_TIMEOUT_SEC,
gtk_text_line_display_cache_blow_cb,
cache);
cache->evict_source = g_main_context_find_source_by_id (NULL, tag);
g_source_set_name (cache->evict_source, "[gtk+] gtk_text_line_display_cache_blow_cb");
}
}
#if DEBUG_LINE_DISPLAY_CACHE
static void
check_disposition (GtkTextLineDisplayCache *cache,
GtkTextLayout *layout)
{
GSequenceIter *iter;
gint last = G_MAXUINT;
g_assert (cache != NULL);
g_assert (cache->sorted_by_line != NULL);
g_assert (cache->line_to_display != NULL);
for (iter = g_sequence_get_begin_iter (cache->sorted_by_line);
!g_sequence_iter_is_end (iter);
iter = g_sequence_iter_next (iter))
{
GtkTextLineDisplay *display = g_sequence_get (iter);
GtkTextIter text_iter;
guint line;
gtk_text_layout_get_iter_at_line (layout, &text_iter, display->line, 0);
line = gtk_text_iter_get_line (&text_iter);
g_assert_cmpint (line, >, last);
last = line;
}
}
#endif
static void
gtk_text_line_display_cache_take_display (GtkTextLineDisplayCache *cache,
GtkTextLineDisplay *display,
GtkTextLayout *layout)
{
g_assert (cache != NULL);
g_assert (display != NULL);
g_assert (display->line != NULL);
g_assert (display->cache_iter == NULL);
g_assert (display->mru_link.data == display);
g_assert (display->mru_link.prev == NULL);
g_assert (display->mru_link.next == NULL);
g_assert (g_hash_table_lookup (cache->line_to_display, display->line) == NULL);
#if DEBUG_LINE_DISPLAY_CACHE
check_disposition (cache, layout);
#endif
display->cache_iter =
g_sequence_insert_sorted (cache->sorted_by_line,
display,
(GCompareDataFunc) gtk_text_line_display_compare,
layout);
g_hash_table_insert (cache->line_to_display, display->line, display);
g_queue_push_head_link (&cache->mru, &display->mru_link);
/* Cull the cache if we're at capacity */
while (cache->mru.length > MRU_MAX_SIZE)
{
display = g_queue_peek_tail (&cache->mru);
gtk_text_line_display_cache_invalidate_display (cache, display, FALSE);
}
}
/*
* gtk_text_line_display_cache_invalidate_display:
* @cache: a GtkTextLineDisplayCache
* @display: a GtkTextLineDisplay
* @cursors_only: if only the cursor positions should be invalidated
*
* If @cursors_only is TRUE, then only the cursors are invalidated. Otherwise,
* @display is removed from the cache.
*
* Use this function when you already have access to a display as it reduces
* some overhead.
*/
void
gtk_text_line_display_cache_invalidate_display (GtkTextLineDisplayCache *cache,
GtkTextLineDisplay *display,
gboolean cursors_only)
{
g_assert (cache != NULL);
g_assert (display != NULL);
g_assert (display->line != NULL);
if (cursors_only)
{
g_clear_pointer (&display->cursors, g_array_unref);
display->cursors_invalid = TRUE;
display->has_block_cursor = FALSE;
}
else
{
GSequenceIter *iter = g_steal_pointer (&display->cache_iter);
if (cache->cursor_line == display->line)
cache->cursor_line = NULL;
g_hash_table_remove (cache->line_to_display, display->line);
g_queue_unlink (&cache->mru, &display->mru_link);
if (iter != NULL)
g_sequence_remove (iter);
}
STAT_INC (cache->inval);
}
/*
* gtk_text_line_display_cache_get:
* @cache: a #GtkTextLineDisplayCache
* @layout: a GtkTextLayout
* @line: a GtkTextLine
* @size_only: if only line sizing is needed
*
* Gets a GtkTextLineDisplay for @line.
*
* If no cached display exists, a new display will be created.
*
* It's possible that calling this function will cause some existing
* cached displays to be released and destroyed.
*
* Returns: (transfer full) (not nullable): a #GtkTextLineDisplay
*/
GtkTextLineDisplay *
gtk_text_line_display_cache_get (GtkTextLineDisplayCache *cache,
GtkTextLayout *layout,
GtkTextLine *line,
gboolean size_only)
{
GtkTextLineDisplay *display;
g_assert (cache != NULL);
g_assert (layout != NULL);
g_assert (line != NULL);
display = g_hash_table_lookup (cache->line_to_display, line);
if (display != NULL)
{
if (size_only || !display->size_only)
{
STAT_INC (cache->hits);
if (!size_only && display->line == cache->cursor_line)
gtk_text_layout_update_display_cursors (layout, display->line, display);
/* Move to front of MRU */
g_queue_unlink (&cache->mru, &display->mru_link);
g_queue_push_head_link (&cache->mru, &display->mru_link);
return gtk_text_line_display_ref (display);
}
/* We need an updated display that includes more than just
* sizing, so we need to drop this entry and force the layout
* to create a new one.
*/
gtk_text_line_display_cache_invalidate_display (cache, display, FALSE);
}
STAT_INC (cache->misses);
g_assert (!g_hash_table_lookup (cache->line_to_display, line));
display = gtk_text_layout_create_display (layout, line, size_only);
g_assert (display != NULL);
g_assert (display->line == line);
if (!size_only)
{
if (line == cache->cursor_line)
gtk_text_layout_update_display_cursors (layout, line, display);
gtk_text_line_display_cache_take_display (cache,
gtk_text_line_display_ref (display),
layout);
}
return g_steal_pointer (&display);
}
void
gtk_text_line_display_cache_invalidate (GtkTextLineDisplayCache *cache)
{
g_assert (cache != NULL);
g_assert (cache->sorted_by_line != NULL);
g_assert (cache->line_to_display != NULL);
STAT_ADD (cache->inval, g_hash_table_size (cache->line_to_display));
cache->cursor_line = NULL;
while (cache->mru.head != NULL)
{
GtkTextLineDisplay *display = g_queue_peek_head (&cache->mru);
gtk_text_line_display_cache_invalidate_display (cache, display, FALSE);
}
g_assert (g_hash_table_size (cache->line_to_display) == 0);
g_assert (g_sequence_get_length (cache->sorted_by_line) == 0);
g_assert (cache->mru.length == 0);
}
void
gtk_text_line_display_cache_invalidate_cursors (GtkTextLineDisplayCache *cache,
GtkTextLine *line)
{
GtkTextLineDisplay *display;
g_assert (cache != NULL);
g_assert (line != NULL);
STAT_INC (cache->inval_cursors);
display = g_hash_table_lookup (cache->line_to_display, line);
if (display != NULL)
gtk_text_line_display_cache_invalidate_display (cache, display, TRUE);
}
/*
* gtk_text_line_display_cache_invalidate_line:
* @self: a GtkTextLineDisplayCache
* @line: a GtkTextLine
*
* Removes a cached display for @line.
*
* Compare to gtk_text_line_display_cache_invalidate_cursors() which
* only invalidates the cursors for this row.
*/
void
gtk_text_line_display_cache_invalidate_line (GtkTextLineDisplayCache *cache,
GtkTextLine *line)
{
GtkTextLineDisplay *display;
g_assert (cache != NULL);
g_assert (line != NULL);
display = g_hash_table_lookup (cache->line_to_display, line);
if (display != NULL)
gtk_text_line_display_cache_invalidate_display (cache, display, FALSE);
STAT_INC (cache->inval_by_line);
}
static GSequenceIter *
find_iter_at_text_iter (GtkTextLineDisplayCache *cache,
GtkTextLayout *layout,
const GtkTextIter *iter)
{
GSequenceIter *left;
GSequenceIter *right;
GSequenceIter *mid;
GSequenceIter *end;
GtkTextLine *target;
guint target_lineno;
g_assert (cache != NULL);
g_assert (iter != NULL);
if (g_sequence_is_empty (cache->sorted_by_line))
return NULL;
/* gtk_text_iter_get_line() will have cached value */
target_lineno = gtk_text_iter_get_line (iter);
target = _gtk_text_iter_get_text_line (iter);
/* Get some iters so we can work with pointer compare */
end = g_sequence_get_end_iter (cache->sorted_by_line);
left = g_sequence_get_begin_iter (cache->sorted_by_line);
right = g_sequence_iter_prev (end);
/* We already checked for empty above */
g_assert (!g_sequence_iter_is_end (left));
g_assert (!g_sequence_iter_is_end (right));
for (;;)
{
GtkTextLineDisplay *display;
guint lineno;
if (left == right)
mid = left;
else
mid = g_sequence_range_get_midpoint (left, right);
g_assert (mid != NULL);
g_assert (!g_sequence_iter_is_end (mid));
if (mid == end)
break;
display = g_sequence_get (mid);
g_assert (display != NULL);
g_assert (display->line != NULL);
g_assert (display->cache_iter != NULL);
if (target == display->line)
return mid;
if (right == left)
break;
lineno = _gtk_text_line_get_number (display->line);
if (target_lineno < lineno)
right = mid;
else if (target_lineno > lineno)
left = g_sequence_iter_next (mid);
else
g_assert_not_reached ();
}
return NULL;
}
/*
* gtk_text_line_display_cache_invalidate_range:
* @cache: a GtkTextLineDisplayCache
* @begin: the starting text iter
* @end: the ending text iter
*
* Removes all GtkTextLineDisplay that fall between or including
* @begin and @end.
*/
void
gtk_text_line_display_cache_invalidate_range (GtkTextLineDisplayCache *cache,
GtkTextLayout *layout,
const GtkTextIter *begin,
const GtkTextIter *end,
gboolean cursors_only)
{
GSequenceIter *begin_iter;
GSequenceIter *end_iter;
GSequenceIter *iter;
g_assert (cache != NULL);
g_assert (layout != NULL);
g_assert (begin != NULL);
g_assert (end != NULL);
STAT_INC (cache->inval_by_range);
/* Short-circuit, is_empty() is O(1) */
if (g_sequence_is_empty (cache->sorted_by_line))
return;
/* gtk_text_iter_order() preserving const */
if (gtk_text_iter_compare (begin, end) > 0)
{
const GtkTextIter *tmp = begin;
end = begin;
begin = tmp;
}
/* Common case, begin/end on same line. Just try to find the line by
* line number and invalidate it alone.
*/
if G_LIKELY (_gtk_text_iter_same_line (begin, end))
{
begin_iter = find_iter_at_text_iter (cache, layout, begin);
if (begin_iter != NULL)
{
GtkTextLineDisplay *display = g_sequence_get (begin_iter);
g_assert (display != NULL);
g_assert (display->line != NULL);
gtk_text_line_display_cache_invalidate_display (cache, display, cursors_only);
}
return;
}
/* Find GSequenceIter containing GtkTextLineDisplay that correspond
* to each of the text positions.
*/
begin_iter = find_iter_at_text_iter (cache, layout, begin);
end_iter = find_iter_at_text_iter (cache, layout, end);
/* Short-circuit if we found nothing */
if (begin_iter == NULL && end_iter == NULL)
return;
/* If nothing matches the end, we need to walk to the end of our
* cached displays. We know there is a non-zero number of items
* in the sequence at this point, so we can iter_prev() safely.
*/
if (end_iter == NULL)
end_iter = g_sequence_iter_prev (g_sequence_get_end_iter (cache->sorted_by_line));
/* If nothing matched the begin, we need to walk starting from
* the first display we have cached.
*/
if (begin_iter == NULL)
begin_iter = g_sequence_get_begin_iter (cache->sorted_by_line);
iter = begin_iter;
for (;;)
{
GtkTextLineDisplay *display = g_sequence_get (iter);
GSequenceIter *next = g_sequence_iter_next (iter);
gtk_text_line_display_cache_invalidate_display (cache, display, cursors_only);
if (iter == end_iter)
break;
iter = next;
}
}
static GSequenceIter *
find_iter_at_at_y (GtkTextLineDisplayCache *cache,
GtkTextLayout *layout,
gint y)
{
GtkTextBTree *btree;
GSequenceIter *left;
GSequenceIter *right;
GSequenceIter *mid;
GSequenceIter *end;
g_assert (cache != NULL);
g_assert (layout != NULL);
if (g_sequence_is_empty (cache->sorted_by_line))
return NULL;
btree = _gtk_text_buffer_get_btree (layout->buffer);
/* Get some iters so we can work with pointer compare */
end = g_sequence_get_end_iter (cache->sorted_by_line);
left = g_sequence_get_begin_iter (cache->sorted_by_line);
right = g_sequence_iter_prev (end);
/* We already checked for empty above */
g_assert (!g_sequence_iter_is_end (left));
g_assert (!g_sequence_iter_is_end (right));
for (;;)
{
GtkTextLineDisplay *display;
gint cache_y;
gint cache_height;
if (left == right)
mid = left;
else
mid = g_sequence_range_get_midpoint (left, right);
g_assert (mid != NULL);
g_assert (!g_sequence_iter_is_end (mid));
if (mid == end)
break;
display = g_sequence_get (mid);
g_assert (display != NULL);
g_assert (display->line != NULL);
cache_y = _gtk_text_btree_find_line_top (btree, display->line, layout);
cache_height = display->height;
if (y >= cache_y && y <= (cache_y + cache_height))
return mid;
if (left == right)
break;
if (y < cache_y)
right = mid;
else if (y > (cache_y + cache_height))
left = g_sequence_iter_next (mid);
else
g_assert_not_reached ();
}
return NULL;
}
/*
* gtk_text_line_display_cache_invalidate_y_range:
* @cache: a GtkTextLineDisplayCache
* @y: the starting Y position
* @old_height: the height to invalidate
* @cursors_only: if only cursors should be invalidated
*
* Remove all GtkTextLineDisplay that fall into the range starting
* from the Y position to Y+Height.
*/
void
gtk_text_line_display_cache_invalidate_y_range (GtkTextLineDisplayCache *cache,
GtkTextLayout *layout,
gint y,
gint old_height,
gboolean cursors_only)
{
GSequenceIter *iter;
GtkTextBTree *btree;
g_assert (cache != NULL);
g_assert (layout != NULL);
STAT_INC (cache->inval_by_y_range);
btree = _gtk_text_buffer_get_btree (layout->buffer);
iter = find_iter_at_at_y (cache, layout, y);
if (iter == NULL)
return;
while (!g_sequence_iter_is_end (iter))
{
GtkTextLineDisplay *display;
gint cache_y;
gint cache_height;
display = g_sequence_get (iter);
iter = g_sequence_iter_next (iter);
cache_y = _gtk_text_btree_find_line_top (btree, display->line, layout);
cache_height = display->height;
if (cache_y + cache_height > y && cache_y < y + old_height)
{
gtk_text_line_display_cache_invalidate_display (cache, display, cursors_only);
y += cache_height;
old_height -= cache_height;
if (old_height > 0)
continue;
}
break;
}
}
void
gtk_text_line_display_cache_set_cursor_line (GtkTextLineDisplayCache *cache,
GtkTextLine *cursor_line)
{
GtkTextLineDisplay *display;
g_assert (cache != NULL);
if (cursor_line == cache->cursor_line)
return;
display = g_hash_table_lookup (cache->line_to_display, cache->cursor_line);
if (display != NULL)
gtk_text_line_display_cache_invalidate_display (cache, display, FALSE);
cache->cursor_line = cursor_line;
display = g_hash_table_lookup (cache->line_to_display, cache->cursor_line);
if (display != NULL)
gtk_text_line_display_cache_invalidate_display (cache, display, FALSE);
}

59
gtk/gtktextlinedisplaycacheprivate.h Normal file
View File

@ -0,0 +1,59 @@
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
* Copyright (C) 2019 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __GTK_TEXT_LINE_DISPLAY_CACHE_PRIVATE_H__
#define __GTK_TEXT_LINE_DISPLAY_CACHE_PRIVATE_H__
#include "gtktextlayoutprivate.h"
G_BEGIN_DECLS
typedef struct _GtkTextLineDisplayCache GtkTextLineDisplayCache;
GtkTextLineDisplayCache *gtk_text_line_display_cache_new (void);
void gtk_text_line_display_cache_free (GtkTextLineDisplayCache *cache);
GtkTextLineDisplay *gtk_text_line_display_cache_get (GtkTextLineDisplayCache *cache,
GtkTextLayout *layout,
GtkTextLine *line,
gboolean size_only);
void gtk_text_line_display_cache_delay_eviction (GtkTextLineDisplayCache *cache);
void gtk_text_line_display_cache_set_cursor_line (GtkTextLineDisplayCache *cache,
GtkTextLine *line);
void gtk_text_line_display_cache_invalidate (GtkTextLineDisplayCache *cache);
void gtk_text_line_display_cache_invalidate_cursors (GtkTextLineDisplayCache *cache,
GtkTextLine *line);
void gtk_text_line_display_cache_invalidate_display (GtkTextLineDisplayCache *cache,
GtkTextLineDisplay *display,
gboolean cursors_only);
void gtk_text_line_display_cache_invalidate_line (GtkTextLineDisplayCache *cache,
GtkTextLine *line);
void gtk_text_line_display_cache_invalidate_range (GtkTextLineDisplayCache *cache,
GtkTextLayout *layout,
const GtkTextIter *begin,
const GtkTextIter *end,
gboolean cursors_only);
void gtk_text_line_display_cache_invalidate_y_range (GtkTextLineDisplayCache *cache,
GtkTextLayout *layout,
gint y,
gint height,
gboolean cursors_only);
G_END_DECLS
#endif /* __GTK_TEXT_LINE_DISPLAY_CACHE_PRIVATE_H__ */

1
gtk/meson.build
View File

@ -369,6 +369,7 @@ gtk_public_sources = files([
'gtktexthandle.c',
'gtktextiter.c',
'gtktextlayout.c',
'gtktextlinedisplaycache.c',
'gtktextmark.c',
'gtktextsegment.c',
'gtktexttag.c',