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Make GtkFrame allocate its label considering natural size requests

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Also like the GtkExpander, the label widget is allocated the minimum
height for its allocated width and the remaining space is given to
the child, test case included.
This commit is contained in:
Tristan Van Berkom 2010-08-06 15:58:12 -04:00
parent c9579f3ca4
commit 208ba9bb50
2 changed files with 150 additions and 24 deletions
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131
gtk/gtkframe.c
View File

@ -47,6 +47,7 @@ struct _GtkFramePriv
/* Properties */
GtkAllocation child_allocation;
GtkAllocation label_allocation;
};
enum {
@ -99,6 +100,15 @@ static void gtk_frame_get_width (GtkSizeRequest *widget
static void gtk_frame_get_height (GtkSizeRequest *widget,
gint *minimum_size,
gint *natural_size);
static void gtk_frame_get_height_for_width (GtkSizeRequest *layout,
gint width,
gint *minimum_height,
gint *natural_height);
static void gtk_frame_get_width_for_height (GtkSizeRequest *layout,
gint width,
gint *minimum_height,
gint *natural_height);
G_DEFINE_TYPE_WITH_CODE (GtkFrame, gtk_frame, GTK_TYPE_BIN,
G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
@ -597,24 +607,21 @@ gtk_frame_paint (GtkWidget *widget,
if (priv->label_widget)
{
GtkRequisition child_requisition;
gfloat xalign;
gint height_extra;
gint x2;
gtk_widget_get_child_requisition (priv->label_widget, &child_requisition);
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
xalign = priv->label_xalign;
else
xalign = 1 - priv->label_xalign;
height_extra = MAX (0, child_requisition.height - widget->style->ythickness)
- priv->label_yalign * child_requisition.height;
height_extra = MAX (0, priv->label_allocation.height - widget->style->ythickness)
- priv->label_yalign * priv->label_allocation.height;
y -= height_extra;
height += height_extra;
x2 = widget->style->xthickness + (priv->child_allocation.width - child_requisition.width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD) * xalign + LABEL_SIDE_PAD;
x2 = widget->style->xthickness + (priv->child_allocation.width - priv->label_allocation.width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD) * xalign + LABEL_SIDE_PAD;
/* If the label is completely over or under the frame we can omit the gap */
if (priv->label_yalign == 0.0 || priv->label_yalign == 1.0)
@ -628,7 +635,7 @@ gtk_frame_paint (GtkWidget *widget,
area, widget, "frame",
x, y, width, height,
GTK_POS_TOP,
x2, child_requisition.width + 2 * LABEL_PAD);
x2, priv->label_allocation.width + 2 * LABEL_PAD);
}
else
gtk_paint_shadow (widget->style, widget->window,
@ -688,25 +695,32 @@ gtk_frame_size_allocate (GtkWidget *widget,
if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
{
GtkRequisition child_requisition;
GtkAllocation child_allocation;
gint nat_width, width, height;
gfloat xalign;
gtk_widget_get_child_requisition (priv->label_widget, &child_requisition);
if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
xalign = priv->label_xalign;
else
xalign = 1 - priv->label_xalign;
child_allocation.x = priv->child_allocation.x + LABEL_SIDE_PAD +
(priv->child_allocation.width - child_requisition.width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD) * xalign + LABEL_PAD;
child_allocation.width = MIN (child_requisition.width, new_allocation.width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD);
gtk_size_request_get_width (GTK_SIZE_REQUEST (priv->label_widget), NULL, &nat_width);
width = new_allocation.width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD;
width = MIN (width, nat_width);
child_allocation.y = priv->child_allocation.y - MAX (child_requisition.height, widget->style->ythickness);
child_allocation.height = child_requisition.height;
gtk_size_request_get_height_for_width (GTK_SIZE_REQUEST (priv->label_widget), width,
&height, NULL);
gtk_widget_size_allocate (priv->label_widget, &child_allocation);
priv->label_allocation.x = priv->child_allocation.x + LABEL_SIDE_PAD +
(new_allocation.width - width - 2 * LABEL_PAD - 2 * LABEL_SIDE_PAD) * xalign + LABEL_PAD;
priv->label_allocation.width = width;
priv->label_allocation.y = priv->child_allocation.y - MAX (height, widget->style->ythickness);
priv->label_allocation.height = height;
gtk_widget_size_allocate (priv->label_widget, &priv->label_allocation);
}
}
@ -727,20 +741,31 @@ gtk_frame_real_compute_child_allocation (GtkFrame *frame,
GtkFramePriv *priv = frame->priv;
GtkWidget *widget = GTK_WIDGET (frame);
GtkAllocation *allocation = &widget->allocation;
GtkRequisition child_requisition;
gint top_margin;
guint border_width;
border_width = gtk_container_get_border_width (GTK_CONTAINER (frame));
if (priv->label_widget)
{
gtk_widget_get_child_requisition (priv->label_widget, &child_requisition);
top_margin = MAX (child_requisition.height, widget->style->ythickness);
gint nat_width, width, height;
gtk_size_request_get_width (GTK_SIZE_REQUEST (priv->label_widget), NULL, &nat_width);
width = widget->allocation.width;
width -= 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
width -= (border_width + GTK_WIDGET (widget)->style->xthickness) * 2;
width = MIN (width, nat_width);
gtk_size_request_get_height_for_width (GTK_SIZE_REQUEST (priv->label_widget), width,
&height, NULL);
top_margin = MAX (height, widget->style->ythickness);
}
else
top_margin = widget->style->ythickness;
border_width = gtk_container_get_border_width (GTK_CONTAINER (frame));
child_allocation->x = border_width + widget->style->xthickness;
child_allocation->width = MAX(1, (gint)allocation->width - child_allocation->x * 2);
@ -846,9 +871,67 @@ gtk_frame_get_height (GtkSizeRequest *widget,
gtk_frame_get_size (widget, GTK_ORIENTATION_VERTICAL, minimum_size, natural_size);
}
static void
gtk_frame_get_height_for_width (GtkSizeRequest *request,
gint width,
gint *minimum_height,
gint *natural_height)
{
GtkWidget *widget = GTK_WIDGET (request);
GtkWidget *child;
GtkFrame *frame = GTK_FRAME (widget);
GtkFramePriv *priv = frame->priv;
GtkBin *bin = GTK_BIN (widget);
gint child_min, child_nat, label_width;
gint minimum, natural;
guint border_width;
border_width = gtk_container_get_border_width (GTK_CONTAINER (widget));
minimum = (border_width + GTK_WIDGET (widget)->style->ythickness) * 2;
natural = (border_width + GTK_WIDGET (widget)->style->ythickness) * 2;
width -= (border_width + GTK_WIDGET (widget)->style->xthickness) * 2;
label_width = width - 2 * LABEL_PAD + 2 * LABEL_SIDE_PAD;
if (priv->label_widget && gtk_widget_get_visible (priv->label_widget))
{
gtk_size_request_get_height_for_width (GTK_SIZE_REQUEST (priv->label_widget),
label_width, &child_min, &child_nat);
minimum += child_min;
natural += child_nat;
}
child = gtk_bin_get_child (bin);
if (child && gtk_widget_get_visible (child))
{
gtk_size_request_get_height_for_width (GTK_SIZE_REQUEST (priv->label_widget),
width, &child_min, &child_nat);
minimum += child_min;
natural += child_nat;
}
if (minimum_height)
*minimum_height = minimum;
if (natural_height)
*natural_height = natural;
}
static void
gtk_frame_get_width_for_height (GtkSizeRequest *widget,
gint height,
gint *minimum_width,
gint *natural_width)
{
gtk_size_request_get_width (widget, minimum_width, natural_width);
}
static void
gtk_frame_size_request_init (GtkSizeRequestIface *iface)
{
iface->get_width = gtk_frame_get_width;
iface->get_height = gtk_frame_get_height;
iface->get_width = gtk_frame_get_width;
iface->get_height = gtk_frame_get_height;
iface->get_height_for_width = gtk_frame_get_height_for_width;
iface->get_width_for_height = gtk_frame_get_width_for_height;
}

43
tests/testheightforwidth.c
View File

@ -615,6 +615,49 @@ TestInterface interfaces[] = {
"</interface>",
NULL
},
{
"Wrapping Frame Label",
"This test demonstrates how the frame label can fill to its natural width "
"and also trade height for width.",
"<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
"<interface>"
" <requires lib=\"gtk+\" version=\"2.20\"/>"
" <!-- interface-naming-policy project-wide -->"
" <object class=\"GtkWindow\" id=\"window\">"
" <property name=\"default_width\">400</property>"
" <property name=\"default_height\">150</property>"
" <child>"
" <object class=\"GtkFrame\" id=\"frame1\">"
" <property name=\"visible\">True</property>"
" <property name=\"border_width\">8</property>"
" <property name=\"label_xalign\">0</property>"
" <child>"
" <object class=\"GtkAlignment\" id=\"alignment1\">"
" <property name=\"visible\">True</property>"
" <property name=\"left_padding\">12</property>"
" <child>"
" <object class=\"GtkLabel\" id=\"label2\">"
" <property name=\"visible\">True</property>"
" <property name=\"label\" translatable=\"yes\">some content</property>"
" </object>"
" </child>"
" </object>"
" </child>"
" <child type=\"label\">"
" <object class=\"GtkLabel\" id=\"label1\">"
" <property name=\"visible\">True</property>"
" <property name=\"label\" translatable=\"yes\">A frame label that's a little long and wraps</property>"
" <property name=\"use_markup\">True</property>"
" <property name=\"wrap\">True</property>"
" </object>"
" </child>"
" </object>"
" </child>"
" </object>"
"</interface>",
NULL
},
};