diff options
Diffstat (limited to 'gtk/gtkgridconstraint.c')
| -rw-r--r-- | gtk/gtkgridconstraint.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/gtk/gtkgridconstraint.c b/gtk/gtkgridconstraint.c new file mode 100644 index 0000000000..fe22a686fc --- /dev/null +++ b/gtk/gtkgridconstraint.c @@ -0,0 +1,206 @@ +/* gtkgridconstraint.c: Make a grid with constraints + * Copyright 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 2.1 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/>. + * + * Author: Matthias Clasen + */ + +#include "config.h" + +#include "gtkgridconstraint.h" +#include "gtkgridconstraintprivate.h" + +#include "gtkintl.h" +#include "gtktypebuiltins.h" + +enum { + PROP_ROW_HOMOGENEOUS = 1, + PROP_COLUMN_HOMOGENEOUS, + N_PROPERTIES +}; + +static GParamSpec *obj_props[N_PROPERTIES]; + +G_DEFINE_TYPE (GtkGridConstraint, gtk_grid_constraint, G_TYPE_OBJECT) + +static void +gtk_constraint_set_property (GObject *gobject, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + GtkGridConstraint *self = GTK_GRID_CONSTRAINT (gobject); + + switch (prop_id) + { + case PROP_ROW_HOMOGENEOUS: + self->row_homogeneous = g_value_get_boolean (value); + break; + + case PROP_COLUMN_HOMOGENEOUS: + self->column_homogeneous = g_value_get_boolean (value); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec); + break; + } +} + +static void +gtk_constraint_get_property (GObject *gobject, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + GtkGridConstraint *self = GTK_GRID_CONSTRAINT (gobject); + + switch (prop_id) + { + case PROP_ROW_HOMOGENEOUS: + g_value_set_boolean (value, self->row_homogeneous); + break; + + case PROP_COLUMN_HOMOGENEOUS: + g_value_set_boolean (value, self->column_homogeneous); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec); + break; + } +} + +static void +gtk_constraint_finalize (GObject *gobject) +{ + GtkGridConstraint *self = GTK_GRID_CONSTRAINT (gobject); + + gtk_grid_constraint_detach (self); + + g_ptr_array_free (self->children, TRUE); + + G_OBJECT_CLASS (gtk_grid_constraint_parent_class)->finalize (gobject); +} + +static void +gtk_grid_constraint_class_init (GtkGridConstraintClass *klass) +{ + GObjectClass *gobject_class = G_OBJECT_CLASS (klass); + + gobject_class->set_property = gtk_constraint_set_property; + gobject_class->get_property = gtk_constraint_get_property; + gobject_class->finalize = gtk_constraint_finalize; + + /** + * GtkGridConstraint:row-homogeneous: + * + * Whether to make all rows the same height. + */ + obj_props[PROP_ROW_HOMOGENEOUS] = + g_param_spec_boolean ("row-homogeneous", + P_("Row homogeneous"), + P_("Row homogeneous"), + FALSE, + G_PARAM_READWRITE | + G_PARAM_STATIC_STRINGS); + + /** + * GtkGridConstraint:column-homogeneous: + * + * Whether to make all columns the same width. + */ + obj_props[PROP_COLUMN_HOMOGENEOUS] = + g_param_spec_boolean ("column-homogeneous", + P_("Column homogeneous"), + P_("Column homogeneous"), + FALSE, + G_PARAM_READWRITE | + G_PARAM_STATIC_STRINGS); + + g_object_class_install_properties (gobject_class, N_PROPERTIES, obj_props); +} + +static void +gtk_grid_constraint_init (GtkGridConstraint *self) +{ + self->children = g_ptr_array_new_with_free_func (g_free); +} + +GtkGridConstraint * +gtk_grid_constraint_new (void) +{ + return g_object_new (GTK_TYPE_GRID_CONSTRAINT, NULL); +} + +void +gtk_grid_constraint_add (GtkGridConstraint *self, + GtkWidget *child, + int left, + int right, + int top, + int bottom) +{ + GtkGridConstraintChild *data; + + g_return_if_fail (GTK_IS_GRID_CONSTRAINT (self)); + g_return_if_fail (GTK_IS_WIDGET (child)); + g_return_if_fail (left < right); + g_return_if_fail (top < bottom); + g_return_if_fail (self->refs == NULL); + + data = g_new0 (GtkGridConstraintChild, 1); + + data->child = child; + data->left = left; + data->right = right; + data->top = top; + data->bottom = bottom; + + g_ptr_array_add (self->children, data); +} + +gboolean +gtk_grid_constraint_is_attached (GtkGridConstraint *self) +{ + return self->refs != NULL; +} + +void +gtk_grid_constraint_attach (GtkGridConstraint *self, + GtkConstraintSolver *solver, + GPtrArray *refs) +{ + g_return_if_fail (self->refs == NULL); + + self->solver = solver; + self->refs = g_ptr_array_ref (refs); +} + +void gtk_grid_constraint_detach (GtkGridConstraint *self) +{ + int i; + + if (self->refs == NULL) + return; + + for (i = 0; i < self->refs->len; i++) + { + GtkConstraintRef *ref = g_ptr_array_index (self->refs, i); + gtk_constraint_solver_remove_constraint (self->solver, ref); + } + + g_clear_pointer (&self->refs, g_ptr_array_unref); +} |