rofi/source/widgets/container.c

/*
 * rofi
 *
 * MIT/X11 License
 * Copyright © 2013-2020 Qball Cow <qball@gmpclient.org>
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */

/** The log domain of this widget. */
#define G_LOG_DOMAIN    "Widgets.Container"

#include <config.h>
#include <stdio.h>
#include "widgets/widget.h"
#include "widgets/widget-internal.h"
#include "widgets/container.h"
#include "theme.h"

struct _container
{
    widget widget;
    widget *child;
};

static void container_update ( widget *wid  );

static int container_get_desired_height ( widget *widget )
{
    container *b     = (container *) widget;
    int       height = 0;
    if ( b->child ) {
        height += widget_get_desired_height ( b->child );
    }
    height += widget_padding_get_padding_height ( widget );
    return height;
}

static void container_draw ( widget *wid, cairo_t *draw )
{
    container *b = (container *) wid;

    widget_draw ( b->child, draw );
}

static void container_free ( widget *wid )
{
    container *b = (container *) wid;

    widget_free ( b->child );
    g_free ( b );
}

void container_add ( container *container, widget *child )
{
    if ( container == NULL ) {
        return;
    }
    container->child = child;
    g_assert ( child->parent == WIDGET ( container  ) );
    widget_update ( WIDGET ( container ) );
}

static void container_resize ( widget *widget, short w, short h )
{
    container *b = (container *) widget;
    if ( b->widget.w != w || b->widget.h != h ) {
        b->widget.w = w;
        b->widget.h = h;
        widget_update ( widget );
    }
}

static widget *container_find_mouse_target ( widget *wid, WidgetType type, gint x, gint y )
{
    container *b = (container *) wid;
    if ( !widget_intersect ( b->child, x, y ) ) {
        return NULL;
    }

    x -= b->child->x;
    y -= b->child->y;
    return widget_find_mouse_target ( b->child, type, x, y );
}

static void container_set_state ( widget *wid, const char *state )
{
    container *b = (container *) wid;
    widget_set_state ( b->child, state );
}

container * container_create ( widget *parent, const char *name )
{
    container *b = g_malloc0 ( sizeof ( container ) );
    // Initialize widget.
    widget_init ( WIDGET ( b ), parent, WIDGET_TYPE_UNKNOWN, name );
    b->widget.draw               = container_draw;
    b->widget.free               = container_free;
    b->widget.resize             = container_resize;
    b->widget.update             = container_update;
    b->widget.find_mouse_target  = container_find_mouse_target;
    b->widget.get_desired_height = container_get_desired_height;
    b->widget.set_state          = container_set_state;
    return b;
}

static void container_update ( widget *wid  )
{
    container *b = (container *) wid;
    if ( b->child && b->child->enabled ) {
        widget_resize ( WIDGET ( b->child ),
                        widget_padding_get_remaining_width  ( WIDGET ( b ) ),
                        widget_padding_get_remaining_height ( WIDGET ( b ) )
                        );
        widget_move ( WIDGET ( b->child ),
                      widget_padding_get_left ( WIDGET ( b ) ),
                      widget_padding_get_top ( WIDGET ( b ) )
                      );
    }
}