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text: Allow selectability without editability

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Being able to select text and being able to edit text are two separate
capabilities, but ClutterText only allows the former with the latter.

The ClutterText:selectable property is set to TRUE by default, given
that it depends on the :editable property; this implies that all
ClutterText instances now are going to show a cursor as soon as they get
key focused. Obviously, this would make labels look a bit off — but if
you have a label then you would not give it key focus, either by
explicitly calling clutter_actor_grab_focus(), or by setting it as
reactive and allowing it to be clicked.

If this turns out to be a problem, we have various ways to avoid showing
a cursor — for instance, we could change the default value of the
selectable property, and ensure that setting the :editable property to
TRUE would also set the :selectable property as a side effect. Or we
could hide the cursor until the first button/touch press event. Finally,
we could always back this commit out if it proves to be too much of a
breakage for existing code bases.

https://bugzilla.gnome.org/show_bug.cgi?id=757470
This commit is contained in:
Emmanuele Bassi 2015-11-02 12:34:39 +00:00
parent 8c863573fc
commit 78eb07d657
1 changed files with 77 additions and 72 deletions
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149
clutter/clutter-text.c
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@ -309,6 +309,16 @@ clutter_text_queue_redraw (ClutterActor *self)
clutter_actor_queue_redraw (self);
}
static gboolean
clutter_text_should_draw_cursor (ClutterText *self)
{
ClutterTextPrivate *priv = self->priv;
return priv->editable ||
priv->selectable ||
priv->cursor_visible;
}
#define clutter_actor_queue_redraw \
Please_use_clutter_text_queue_redraw_instead
@ -1602,85 +1612,81 @@ selection_paint (ClutterText *self)
ClutterTextPrivate *priv = self->priv;
ClutterActor *actor = CLUTTER_ACTOR (self);
guint8 paint_opacity = clutter_actor_get_paint_opacity (actor);
const ClutterColor *color;
if (!priv->has_focus)
return;
if (priv->editable && priv->cursor_visible)
if (!clutter_text_should_draw_cursor (self))
return;
if (priv->position == priv->selection_bound)
{
const ClutterColor *color;
gint position;
position = priv->position;
if (position == priv->selection_bound)
{
/* No selection, just draw the cursor */
if (priv->cursor_color_set)
color = &priv->cursor_color;
else
color = &priv->text_color;
cogl_set_source_color4ub (color->red,
color->green,
color->blue,
paint_opacity * color->alpha / 255);
cogl_rectangle (priv->cursor_rect.origin.x,
priv->cursor_rect.origin.y,
priv->cursor_rect.origin.x + priv->cursor_rect.size.width,
priv->cursor_rect.origin.y + priv->cursor_rect.size.height);
}
/* No selection, just draw the cursor */
if (priv->cursor_color_set)
color = &priv->cursor_color;
else
{
/* Paint selection background first */
PangoLayout *layout = clutter_text_get_layout (self);
CoglPath *selection_path = cogl_path_new ();
CoglColor cogl_color = { 0, };
CoglFramebuffer *fb;
color = &priv->text_color;
fb = _clutter_actor_get_active_framebuffer (actor);
if (G_UNLIKELY (fb == NULL))
return;
cogl_set_source_color4ub (color->red,
color->green,
color->blue,
paint_opacity * color->alpha / 255);
/* Paint selection background */
if (priv->selection_color_set)
color = &priv->selection_color;
else if (priv->cursor_color_set)
color = &priv->cursor_color;
else
color = &priv->text_color;
cogl_rectangle (priv->cursor_rect.origin.x,
priv->cursor_rect.origin.y,
priv->cursor_rect.origin.x + priv->cursor_rect.size.width,
priv->cursor_rect.origin.y + priv->cursor_rect.size.height);
}
else
{
/* Paint selection background first */
PangoLayout *layout = clutter_text_get_layout (self);
CoglPath *selection_path = cogl_path_new ();
CoglColor cogl_color = { 0, };
CoglFramebuffer *fb;
cogl_set_source_color4ub (color->red,
color->green,
color->blue,
paint_opacity * color->alpha / 255);
fb = _clutter_actor_get_active_framebuffer (actor);
if (G_UNLIKELY (fb == NULL))
return;
clutter_text_foreach_selection_rectangle (self,
add_selection_rectangle_to_path,
selection_path);
/* Paint selection background */
if (priv->selection_color_set)
color = &priv->selection_color;
else if (priv->cursor_color_set)
color = &priv->cursor_color;
else
color = &priv->text_color;
cogl_path_fill (selection_path);
cogl_set_source_color4ub (color->red,
color->green,
color->blue,
paint_opacity * color->alpha / 255);
/* Paint selected text */
cogl_framebuffer_push_path_clip (fb, selection_path);
cogl_object_unref (selection_path);
clutter_text_foreach_selection_rectangle (self,
add_selection_rectangle_to_path,
selection_path);
if (priv->selected_text_color_set)
color = &priv->selected_text_color;
else
color = &priv->text_color;
cogl_path_fill (selection_path);
cogl_color_init_from_4ub (&cogl_color,
color->red,
color->green,
color->blue,
paint_opacity * color->alpha / 255);
/* Paint selected text */
cogl_framebuffer_push_path_clip (fb, selection_path);
cogl_object_unref (selection_path);
cogl_pango_render_layout (layout, priv->text_x, 0, &cogl_color, 0);
if (priv->selected_text_color_set)
color = &priv->selected_text_color;
else
color = &priv->text_color;
cogl_framebuffer_pop_clip (fb);
}
cogl_color_init_from_4ub (&cogl_color,
color->red,
color->green,
color->blue,
paint_opacity * color->alpha / 255);
cogl_pango_render_layout (layout, priv->text_x, 0, &cogl_color, 0);
cogl_framebuffer_pop_clip (fb);
}
}
@ -1852,7 +1858,7 @@ clutter_text_press (ClutterActor *actor,
/* if a ClutterText is just used for display purposes, then we
* should ignore the events we receive
*/
if (!priv->editable)
if (!(priv->editable || priv->selectable))
return CLUTTER_EVENT_PROPAGATE;
clutter_actor_grab_key_focus (actor);
@ -2265,7 +2271,8 @@ clutter_text_paint (ClutterActor *self)
* editable, in which case we want to paint at least the
* cursor
*/
if (n_chars == 0 && (!priv->editable || !priv->cursor_visible))
if (n_chars == 0 &&
!clutter_text_should_draw_cursor (text))
return;
if (priv->editable && priv->single_line_mode)
@ -2299,7 +2306,7 @@ clutter_text_paint (ClutterActor *self)
}
}
if (priv->editable && priv->cursor_visible)
if ((priv->editable || priv->selectable) && priv->cursor_visible)
clutter_text_ensure_cursor_position (text);
if (priv->editable && priv->single_line_mode)
@ -2492,7 +2499,9 @@ clutter_text_get_paint_volume (ClutterActor *self,
/* If the cursor is visible then that will likely be drawn
outside of the ink rectangle so we should merge that in */
if (priv->editable && priv->cursor_visible && priv->has_focus)
if ((priv->editable || priv->selectable) &&
priv->cursor_visible &&
priv->has_focus)
{
ClutterPaintVolume cursor_paint_volume;
@ -2653,11 +2662,7 @@ clutter_text_allocate (ClutterActor *self,
static gboolean
clutter_text_has_overlaps (ClutterActor *self)
{
ClutterTextPrivate *priv = CLUTTER_TEXT (self)->priv;
return priv->editable ||
priv->selectable ||
priv->cursor_visible;
return clutter_text_should_draw_cursor ((ClutterText *) self);
}
static void