/**
* mx_bin_allocate_child:
* @bin: An #MxBin
* @box: The allocation box of the parent actor.
* @flags: #ClutterAllocationFlags, usually provided by the.
* clutter_actor_allocate function.
*
* Allocates the child of an #MxBin using the width and height from @box.
* This function should usually only be called by subclasses of #MxBin.
*
* This function can be used to allocate the child of an #MxBin if no special
* allocation requirements are needed. It is similar to
* #mx_allocate_align_fill, except that it reads the alignment, padding and
* fill values from the #MxBin, and will call #clutter_actor_allocate on the
* child.
*
*/
void
mx_bin_allocate_child (MxBin *bin,
const ClutterActorBox *box,
ClutterAllocationFlags flags)
{
MxBinPrivate *priv;
g_return_if_fail (MX_IS_BIN (bin));
priv = bin->priv;
if (priv->child)
{
MxPadding padding;
ClutterActorBox allocation = { 0, };
mx_widget_get_padding (MX_WIDGET (bin), &padding);
allocation.x1 = padding.left;
allocation.x2 = box->x2 - box->x1 - padding.right;
allocation.y1 = padding.top;
allocation.y2 = box->y2 - box->y1 - padding.bottom;
mx_allocate_align_fill (priv->child,
&allocation,
priv->x_align,
priv->y_align,
priv->x_fill,
priv->y_fill);
clutter_actor_allocate (priv->child, &allocation, flags);
}
}
static void
mx_stack_allocate (ClutterActor *actor,
const ClutterActorBox *box,
ClutterAllocationFlags flags)
{
GList *c;
ClutterActorBox avail_space;
MxStackPrivate *priv = MX_STACK (actor)->priv;
CLUTTER_ACTOR_CLASS (mx_stack_parent_class)->allocate (actor, box, flags);
mx_widget_get_available_area (MX_WIDGET (actor), box, &avail_space);
memcpy (&priv->allocation, box, sizeof (priv->allocation));
for (c = priv->children; c; c = c->next)
{
gboolean x_fill, y_fill, fit, crop;
MxAlign x_align, y_align;
ClutterActor *child = c->data;
ClutterActorBox child_box = avail_space;
if (!CLUTTER_ACTOR_IS_VISIBLE (child))
continue;
clutter_container_child_get (CLUTTER_CONTAINER (actor),
child,
"x-fill", &x_fill,
"y-fill", &y_fill,
"x-align", &x_align,
"y-align", &y_align,
"fit", &fit,
"crop", &crop,
NULL);
/* when "crop" is set, fit and fill properties are ignored */
if (crop)
{
gfloat available_height, available_width;
gfloat natural_width, natural_height;
gfloat ratio_width, ratio_height, ratio_child;
available_width = avail_space.x2 - avail_space.x1;
available_height = avail_space.y2 - avail_space.y1;
clutter_actor_get_preferred_size (child,
NULL, NULL,
&natural_width,
&natural_height);
ratio_child = natural_width / natural_height;
ratio_width = available_width / natural_width;
ratio_height = available_height / natural_height;
if (ratio_width > ratio_height)
{
natural_width = available_width;
natural_height = natural_width / ratio_child;
}
else
{
natural_height = available_height;
natural_width = ratio_child * natural_height;
}
child_box.x1 = (available_width - natural_width) / 2;
child_box.y1 = (available_height - natural_height) / 2;
child_box.x2 = natural_width;
child_box.y2 = natural_height;
clutter_actor_allocate (child, &child_box, flags);
continue;
}
/* when "fit" is set, fill properties are ignored */
if (fit)
{
gfloat available_height, available_width, width, height;
gfloat min_width, natural_width, min_height, natural_height;
ClutterRequestMode request_mode;
available_height = avail_space.y2 - avail_space.y1;
available_width = avail_space.x2 - avail_space.x1;
request_mode = clutter_actor_get_request_mode (child);
if (request_mode == CLUTTER_REQUEST_HEIGHT_FOR_WIDTH)
{
clutter_actor_get_preferred_width (child, available_height,
&min_width,
&natural_width);
width = CLAMP (natural_width, min_width, available_width);
clutter_actor_get_preferred_height (child, width,
&min_height,
&natural_height);
height = CLAMP (natural_height, min_height, available_height);
}
else
{
clutter_actor_get_preferred_height (child, available_width,
&min_height,
&natural_height);
height = CLAMP (natural_height, min_height, available_height);
clutter_actor_get_preferred_width (child, height,
&min_width,
&natural_width);
width = CLAMP (natural_width, min_width, available_width);
}
child_box.x1 = 0;
child_box.y1 = 0;
switch (x_align)
{
case MX_ALIGN_START:
break;
case MX_ALIGN_MIDDLE:
child_box.x1 += (gint)(available_width / 2 - width / 2);
break;
case MX_ALIGN_END:
child_box.x1 = avail_space.x2 - width;
break;
}
switch (y_align)
{
case MX_ALIGN_START:
break;
case MX_ALIGN_MIDDLE:
child_box.y1 += (gint)(available_height / 2 - height / 2);
break;
case MX_ALIGN_END:
child_box.y1 = avail_space.y2 - height;
break;
}
child_box.x2 = child_box.x1 + width;
child_box.y2 = child_box.y1 + height;
clutter_actor_allocate (child, &child_box, flags);
continue;
}
/* Adjust the available space when not filling, otherwise
* actors that support width-for-height or height-for-width
* allocation won't shrink correctly.
*/
if (!x_fill)
{
gfloat width;
clutter_actor_get_preferred_width (child, -1, NULL, &width);
switch (x_align)
{
case MX_ALIGN_START:
break;
case MX_ALIGN_MIDDLE:
child_box.x1 += (gint)((avail_space.x2 - avail_space.x1) / 2 -
width / 2);
break;
case MX_ALIGN_END:
child_box.x1 = avail_space.x2 - width;
break;
}
child_box.x2 = child_box.x1 + width;
if (child_box.x2 > avail_space.x2)
child_box.x2 = avail_space.x2;
if (child_box.x1 < avail_space.x1)
child_box.x1 = avail_space.x1;
}
if (!y_fill)
{
gfloat height;
clutter_actor_get_preferred_height (child, -1, NULL, &height);
switch (y_align)
{
case MX_ALIGN_START:
break;
case MX_ALIGN_MIDDLE:
child_box.y1 += (gint)((avail_space.y2 - avail_space.y1) / 2 -
height / 2);
break;
case MX_ALIGN_END:
child_box.y1 = avail_space.y2 - height;
break;
}
child_box.y2 = child_box.y1 + height;
if (child_box.y2 > avail_space.y2)
child_box.y2 = avail_space.y2;
if (child_box.y1 < avail_space.y1)
child_box.y1 = avail_space.y1;
}
mx_allocate_align_fill (child,
&child_box,
x_align,
y_align,
x_fill,
y_fill);
clutter_actor_allocate (child, &child_box, flags);
}
}
static void
mx_expander_allocate (ClutterActor *actor,
const ClutterActorBox *box,
ClutterAllocationFlags flags)
{
MxExpanderPrivate *priv = MX_EXPANDER (actor)->priv;
ClutterActorBox child_box;
MxPadding padding;
gfloat label_w, label_h;
gfloat available_w, available_h, min_w, min_h, arrow_h, arrow_w;
/* chain up to store allocation */
CLUTTER_ACTOR_CLASS (mx_expander_parent_class)->allocate (actor, box, flags);
mx_widget_get_padding (MX_WIDGET (actor), &padding);
available_w = (box->x2 - box->x1) - padding.left - padding.right;
available_h = (box->y2 - box->y1) - padding.top - padding.bottom;
/* arrow */
clutter_actor_get_preferred_width (priv->arrow, -1, NULL, &arrow_w);
arrow_w = MIN (arrow_w, available_w);
clutter_actor_get_preferred_height (priv->arrow, -1, NULL, &arrow_h);
arrow_h = MIN (arrow_h, available_h);
child_box.x1 = padding.left;
child_box.x2 = child_box.x1 + arrow_w;
child_box.y1 = padding.top;
child_box.y2 = child_box.y1 + arrow_h;
clutter_actor_allocate (priv->arrow, &child_box, flags);
/* label */
min_h = 0;
min_w = 0;
clutter_actor_get_preferred_width (priv->label,
available_h, &min_w, &label_w);
label_w = CLAMP (label_w, min_w, available_w);
clutter_actor_get_preferred_height (priv->label,
label_w, &min_h, &label_h);
label_h = CLAMP (label_h, min_h, available_h);
/* TODO: make a style property for padding between arrow and label */
child_box.x1 = padding.left + arrow_w + 6.0f;
child_box.x2 = child_box.x1 + label_w;
child_box.y1 = padding.top;
child_box.y2 = child_box.y1 + MAX (label_h, arrow_h);
mx_allocate_align_fill (priv->label, &child_box, MX_ALIGN_START,
MX_ALIGN_MIDDLE, FALSE, FALSE);
clutter_actor_allocate (priv->label, &child_box, flags);
/* remove label height and spacing for child calculations */
available_h -= MAX (label_h, arrow_h) + priv->spacing;
/* child */
if (priv->expanded && priv->child && CLUTTER_ACTOR_IS_VISIBLE (priv->child))
{
child_box.x1 = padding.left;
child_box.x2 = child_box.x1 + available_w;
child_box.y1 = padding.top + priv->spacing + MAX (label_h, arrow_h);
child_box.y2 = child_box.y1 + available_h;
clutter_actor_allocate (priv->child, &child_box, flags);
}
}
static void
mex_tile_allocate (ClutterActor *actor,
const ClutterActorBox *box,
ClutterAllocationFlags flags)
{
MxPadding padding;
ClutterActorBox child_box;
gfloat available_width, available_height;
ClutterEffect *fade;
MexTilePrivate *priv = MEX_TILE (actor)->priv;
CLUTTER_ACTOR_CLASS (mex_tile_parent_class)->allocate (actor, box, flags);
mx_widget_get_padding (MX_WIDGET (actor), &padding);
available_width = box->x2 - box->x1 - padding.left - padding.right;
available_height = box->y2 - box->y1 - padding.top - padding.bottom;
if (priv->child)
{
gfloat child_width, full_width, full_height;
clutter_actor_get_preferred_size (priv->child, NULL, NULL,
&full_width, &full_height);
child_box.y1 = padding.top;
if (clutter_alpha_get_alpha (priv->important_alpha) < 0.5)
{
child_width = full_width * (available_height / full_height);
if (child_width > available_width)
child_width = available_width;
child_box.y2 = child_box.y1 + available_height;
/* When we're in unimportant state, make sure the label
* doesn't overlap the image.
*/
if (available_height < full_height)
available_width -= child_width *
((0.5 - clutter_alpha_get_alpha (priv->important_alpha)) * 2);
}
else
{
child_width = available_width;
clutter_actor_set_clip_to_allocation (
actor, (full_height > available_height));
child_box.y2 = child_box.y1 + full_height;
}
child_box.x2 = box->x2 - box->x1 - padding.right;
child_box.x1 = child_box.x2 - child_width;
mx_allocate_align_fill (priv->child, &child_box,
MX_ALIGN_MIDDLE, MX_ALIGN_MIDDLE, FALSE, FALSE);
clutter_actor_allocate (priv->child, &child_box, flags);
}
/* Allocate Header */
if (priv->header_visible)
{
gfloat icon1_w, icon1_h, icon2_w, icon2_h, label_h, label_w, header_h;
gfloat middle_w;
if (priv->header_padding)
{
padding.top += priv->header_padding->top;
padding.right += priv->header_padding->right;
padding.bottom += priv->header_padding->bottom;
padding.left += priv->header_padding->left;
}
clutter_actor_get_preferred_size (priv->box_layout, NULL, NULL, &label_w,
&label_h);
if (priv->icon1)
clutter_actor_get_preferred_size (priv->icon1, NULL, NULL, &icon1_w,
&icon1_h);
else
icon1_h = icon1_w = 0;
if (priv->icon2)
clutter_actor_get_preferred_size (priv->icon2, NULL, NULL, &icon2_w,
&icon2_h);
else
icon2_h = icon2_w = 0;
header_h = MAX (icon1_h, MAX (icon2_h, label_h));
/* primary icon */
if (priv->icon1)
{
child_box.y1 = padding.top + (header_h / 2.0) - (icon1_h / 2.0);
child_box.x1 = padding.left;
child_box.y2 = child_box.y1 + icon1_h;
child_box.x2 = child_box.x1 + icon1_w;
clutter_actor_allocate (priv->icon1, &child_box, flags);
child_box.x1 += icon1_w + 8;
}
else
child_box.x1 = padding.left;
/* label */
child_box.x2 = child_box.x1 + label_w;
child_box.y1 = (int) (padding.top + (header_h / 2.0) - (label_h / 2.0));
child_box.y2 = child_box.y1 + label_h;
fade = clutter_actor_get_effect (priv->box_layout, "fade");
middle_w = available_width - icon1_w - icon2_w;
if (priv->header_padding)
middle_w -= priv->header_padding->left + priv->header_padding->right;
clutter_actor_meta_set_enabled (CLUTTER_ACTOR_META (fade),
!(middle_w > label_w));
mx_fade_effect_set_bounds (MX_FADE_EFFECT (fade), 0, 0, middle_w, 0);
clutter_actor_allocate (priv->box_layout, &child_box, flags);
/* secondary icon */
if (priv->icon2)
{
child_box.x2 = (box->x2 - box->x1) - padding.right;
child_box.x1 = child_box.x2 - icon2_w;
child_box.y1 = padding.top + (header_h / 2.0) - (icon2_h / 2.0);
child_box.y2 = child_box.y1 + icon2_h;
clutter_actor_allocate (priv->icon2, &child_box, flags);
}
priv->header_height = header_h;
if (priv->header_padding)
priv->header_height += priv->header_padding->top
+ priv->header_padding->bottom;
}
}
static void
mx_label_allocate (ClutterActor *actor,
const ClutterActorBox *box,
ClutterAllocationFlags flags)
{
MxLabelPrivate *priv = MX_LABEL (actor)->priv;
gboolean label_did_fade = priv->label_should_fade;
ClutterActorClass *parent_class;
ClutterActorBox child_box;
gboolean x_fill, y_fill;
gfloat avail_width;
parent_class = CLUTTER_ACTOR_CLASS (mx_label_parent_class);
parent_class->allocate (actor, box, flags);
mx_widget_get_available_area (MX_WIDGET (actor), box, &child_box);
avail_width = child_box.x2 - child_box.x1;
/* The default behaviour of ClutterText is to align to the
* top-left when it gets more space than is needed. Because
* of this behaviour, if we're aligning to the left, we can
* assign all our horizontal space to the label without
* measuring it (i.e. x-fill), and the same applies for
* aligning to the top and vertical space.
*/
x_fill = (priv->x_align == MX_ALIGN_START) ? TRUE : FALSE;
y_fill = (priv->y_align == MX_ALIGN_START) ? TRUE : FALSE;
mx_allocate_align_fill (priv->label, &child_box, priv->x_align,
priv->y_align, x_fill, y_fill);
priv->label_should_fade = FALSE;
if (priv->fade_out)
{
/* If we're fading out, make sure the label has its full width
* allocated. This ensures that the offscreen effect has the full
* label inside its texture.
*/
gfloat label_width;
clutter_actor_get_preferred_width (priv->label, -1, NULL, &label_width);
if (label_width > avail_width)
{
priv->label_should_fade = TRUE;
child_box.x2 = child_box.x1 + label_width;
}
mx_fade_effect_set_bounds (MX_FADE_EFFECT (priv->fade_effect),
0, 0, MIN (label_width, avail_width), 0);
}
/* Allocate the label */
clutter_actor_allocate (priv->label, &child_box, flags);
if (priv->show_tooltip)
{
PangoLayout *layout;
const gchar *text;
layout = clutter_text_get_layout (CLUTTER_TEXT (priv->label));
if (pango_layout_is_ellipsized (layout))
text = clutter_text_get_text (CLUTTER_TEXT (priv->label));
else
text = NULL;
mx_widget_set_tooltip_text (MX_WIDGET (actor), text);
}
/* Animate in/out the faded end of the label */
if (label_did_fade != priv->label_should_fade)
{
/* Begin/reverse the fading timeline when necessary */
if (priv->label_should_fade)
clutter_timeline_set_direction (priv->fade_timeline,
CLUTTER_TIMELINE_FORWARD);
else
clutter_timeline_set_direction (priv->fade_timeline,
CLUTTER_TIMELINE_BACKWARD);
if (!clutter_timeline_is_playing (priv->fade_timeline))
clutter_timeline_rewind (priv->fade_timeline);
clutter_timeline_start (priv->fade_timeline);
}
}
static void
mx_table_preferred_allocate (ClutterActor *self,
const ClutterActorBox *box,
gboolean flags)
{
gint row_spacing, col_spacing;
gint i;
MxTable *table;
MxTablePrivate *priv;
MxPadding padding;
DimensionData *rows, *columns;
ClutterActorIter iter;
ClutterActor *child;
table = MX_TABLE (self);
priv = MX_TABLE (self)->priv;
mx_widget_get_padding (MX_WIDGET (self), &padding);
col_spacing = (priv->col_spacing);
row_spacing = (priv->row_spacing);
mx_table_calculate_dimensions (table, box->x2 - box->x1, box->y2 - box->y1);
rows = &g_array_index (priv->rows, DimensionData, 0);
columns = &g_array_index (priv->columns, DimensionData, 0);
clutter_actor_iter_init (&iter, self);
while (clutter_actor_iter_next (&iter, &child))
{
gint row, col, row_span, col_span;
gint col_width, row_height;
MxTableChild *meta;
ClutterActorBox childbox;
gint child_x, child_y;
gdouble x_align_d, y_align_d;
gboolean x_fill, y_fill;
MxAlign x_align, y_align;
meta = (MxTableChild *) clutter_container_get_child_meta (CLUTTER_CONTAINER (self), child);
if (!CLUTTER_ACTOR_IS_VISIBLE (child))
continue;
/* get child properties */
col = meta->col;
row = meta->row;
row_span = meta->row_span;
col_span = meta->col_span;
x_align_d = meta->x_align;
y_align_d = meta->y_align;
x_fill = meta->x_fill;
y_fill = meta->y_fill;
/* Convert to MxAlign */
if (x_align_d < 1.0 / 3.0)
x_align = MX_ALIGN_START;
else if (x_align_d > 2.0 / 3.0)
x_align = MX_ALIGN_END;
else
x_align = MX_ALIGN_MIDDLE;
if (y_align_d < 1.0 / 3.0)
y_align = MX_ALIGN_START;
else if (y_align_d > 2.0 / 3.0)
y_align = MX_ALIGN_END;
else
y_align = MX_ALIGN_MIDDLE;
/* initialise the width and height */
col_width = columns[col].final_size;
row_height = rows[row].final_size;
/* Add the widths of the spanned columns:
*
* First check that we have a non-zero span. Then we loop over each of
* the columns that we're spanning but we stop short if we go past the
* number of columns in the table. This is necessary to avoid accessing
* uninitialised memory. We add the spacing in here too since we only
* want to add as much spacing as times we successfully span.
*/
if (col + col_span > priv->n_cols)
g_warning ("MxTable: col-span exceeds number of columns");
if (row + row_span > priv->n_rows)
g_warning ("MxTable: row-span exceeds number of rows");
if (col_span > 1)
{
for (i = col + 1; i < col + col_span && i < priv->n_cols; i++)
{
col_width += columns[i].final_size;
col_width += col_spacing;
}
}
/* add the height of the spanned rows */
if (row_span > 1)
{
for (i = row + 1; i < row + row_span && i < priv->n_rows; i++)
{
row_height += rows[i].final_size;
row_height += row_spacing;
}
}
/* calculate child x */
child_x = (int) padding.left;
for (i = 0; i < col; i++)
{
if (columns[i].is_visible)
{
child_x += columns[i].final_size;
child_x += col_spacing;
}
}
/* calculate child y */
child_y = (int) padding.top;
for (i = 0; i < row; i++)
{
if (rows[i].is_visible)
{
child_y += rows[i].final_size;
child_y += row_spacing;
}
}
/* set up childbox */
childbox.x1 = (float) child_x;
childbox.x2 = (float) MAX (0, child_x + col_width);
childbox.y1 = (float) child_y;
childbox.y2 = (float) MAX (0, child_y + row_height);
mx_allocate_align_fill (child, &childbox, x_align, y_align, x_fill, y_fill);
clutter_actor_allocate (child, &childbox, flags);
}
}
