rofi/include/widgets/widget-internal.h

/*
 * rofi
 *
 * MIT/X11 License
 * Copyright © 2013-2017 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.
 *
 */

#ifndef WIDGET_INTERNAL_H
#define WIDGET_INTERNAL_H

#include "theme.h"
/**
 * Data structure holding the internal state of the Widget
 */
struct _widget
{
    /** The type of the widget */
    WidgetType                  type;
    /** X position relative to parent */
    short                       x;
    /** Y position relative to parent */
    short                       y;
    /** Width of the widget */
    short                       w;
    /** Height of the widget */
    short                       h;
    /** RofiPadding */
    RofiPadding                     def_margin;
    RofiPadding                     def_padding;
    RofiPadding                     def_border;
    RofiPadding                     def_border_radius;
    RofiPadding                     margin;
    RofiPadding                     padding;
    RofiPadding                     border;
    RofiPadding                     border_radius;

    /** enabled or not */
    gboolean                    enabled;
    /** Expand the widget when packed */
    gboolean                    expand;
    /** Place widget at end of parent */
    gboolean                    end;
    /** Parent widget */
    struct _widget              *parent;
    /** Internal */
    gboolean                    need_redraw;
    /** get width of widget implementation function */
    int                         ( *get_width )( struct _widget * );
    /** get height of widget implementation function */
    int                         ( *get_height )( struct _widget * );
    /** draw widget implementation function */
    void                        ( *draw )( struct _widget *widget, cairo_t *draw );
    /** resize widget implementation function */
    void                        ( *resize )( struct _widget *, short, short );
    /** update widget implementation function */
    void                        ( *update )( struct _widget * );

    /** Handle mouse motion, used for dragging */
    gboolean                    ( *motion_notify )( struct _widget *, gint x, gint y );

    int               ( *get_desired_height )( struct _widget * );
    int               ( *get_desired_width )( struct _widget * );

    /** widget find_mouse_target callback */
    widget_find_mouse_target_cb find_mouse_target;
    /** widget trigger_action callback */
    widget_trigger_action_cb    trigger_action;
    /** user data for find_mouse_target and trigger_action callback */
    void                        *trigger_action_cb_data;

    /** Free widget callback */
    void                        ( *free )( struct _widget *widget );

    /** Name of widget (used for theming) */
    char                        *name;
    const char                  *state;
};

/**
 * @param widget The widget to initialize.
 * @param type The type of the widget.
 * @param name The name of the widget.
 *
 * Initializes the widget structure.
 *
 */
void widget_init ( widget *widget, WidgetType type, const char *name );

/**
 * @param widget The widget handle.
 * @param state  The state of the widget.
 *
 * Set the state of the widget.
 */
void widget_set_state ( widget *widget, const char *state );

/**
 * @param wid The widget handle.
 *
 * Get the left padding of the widget.
 *
 * @returns the left padding in pixels.
 */
int widget_padding_get_left ( const widget *wid );

/**
 * @param wid The widget handle.
 *
 * Get the right padding of the widget.
 *
 * @returns the right padding in pixels.
 */
int widget_padding_get_right ( const widget *wid );

/**
 * @param wid The widget handle.
 *
 * Get the top padding of the widget.
 *
 * @returns the top padding in pixels.
 */
int widget_padding_get_top ( const widget *wid );

/**
 * @param wid The widget handle.
 *
 * Get the bottom padding of the widget.
 *
 * @returns the bottom padding in pixels.
 */
int widget_padding_get_bottom ( const widget *wid );

/**
 * @param wid The widget handle.
 *
 * Get width of the content of the widget
 *
 * @returns the widget width, excluding padding.
 */
int widget_padding_get_remaining_width ( const widget *wid );
/**
 * @param wid The widget handle.
 *
 * Get height of the content of the widget
 *
 * @returns the widget height, excluding padding.
 */
int widget_padding_get_remaining_height ( const widget *wid );
/**
 * @param wid The widget handle.
 *
 * Get the combined top and bottom padding.
 *
 * @returns the top and bottom padding of the widget in pixels.
 */
int widget_padding_get_padding_height ( const widget *wid );
/**
 * @param wid The widget handle.
 *
 * Get the combined left and right padding.
 *
 * @returns the left and right padding of the widget in pixels.
 */
int widget_padding_get_padding_width ( const widget *wid );
#endif // WIDGET_INTERNAL_H