/*

 * Copyright (C) 2001 Havoc Pennington

 * Copyright (C) 2016 Alberts Muktupāvels

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program 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 General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program. If not, see <http://www.gnu.org/licenses/>.

 */

#ifndef META_DRAW_OP_PRIVATE_H

#define META_DRAW_OP_PRIVATE_H

#include <gtk/gtk.h>

#include "meta-color-spec-private.h"

#include "meta-draw-spec-private.h"

#include "meta-gradient-spec-private.h"

G_BEGIN_DECLS

typedef struct _MetaDrawInfo MetaDrawInfo;

typedef struct _MetaDrawOp MetaDrawOp;

typedef struct _MetaDrawOpList MetaDrawOpList;

/**

 * A drawing operation in our simple vector drawing language.

 */

typedef enum

{

  /** Basic drawing-- line */

  META_DRAW_LINE,

  /** Basic drawing-- rectangle */

  META_DRAW_RECTANGLE,

  /** Basic drawing-- arc */

  META_DRAW_ARC,

  /** Clip to a rectangle */

  META_DRAW_CLIP,

  /* Texture thingies */

  /** Just a filled rectangle with alpha */

  META_DRAW_TINT,

  META_DRAW_GRADIENT,

  META_DRAW_IMAGE,

  /** GTK theme engine stuff */

  META_DRAW_GTK_ARROW,

  META_DRAW_GTK_BOX,

  META_DRAW_GTK_VLINE,

  /** App's window icon */

  META_DRAW_ICON,

  /** App's window title */

  META_DRAW_TITLE,

  /** a draw op list */

  META_DRAW_OP_LIST,

  /** tiled draw op list */

  META_DRAW_TILE

} MetaDrawType;

typedef enum

{

  META_IMAGE_FILL_SCALE, /* default, needs to be all-bits-zero for g_new0 */

  META_IMAGE_FILL_TILE

} MetaImageFillType;

struct _MetaDrawInfo

{

  gint         scale;

  GdkPixbuf   *mini_icon;

  GdkPixbuf   *icon;

  PangoLayout *title_layout;

  gint         title_layout_width;

  gint         title_layout_height;

  gint         left_width;

  gint         right_width;

  gint         top_height;

  gint         bottom_height;

  gdouble      width;

  gdouble      height;

};

/**

 * A single drawing operation in our simple vector drawing language.

 */

struct _MetaDrawOp

{

  MetaDrawType type;

  /* Positions are strings because they can be expressions */

  union

  {

    struct {

      MetaColorSpec *color_spec;

      int dash_on_length;

      int dash_off_length;

      int width;

      MetaDrawSpec *x1;

      MetaDrawSpec *y1;

      MetaDrawSpec *x2;

      MetaDrawSpec *y2;

    } line;

    struct {

      MetaColorSpec *color_spec;

      gboolean filled;

      MetaDrawSpec *x;

      MetaDrawSpec *y;

      MetaDrawSpec *width;

      MetaDrawSpec *height;

    } rectangle;

    struct {

      MetaColorSpec *color_spec;

      gboolean filled;

      MetaDrawSpec *x;

      MetaDrawSpec *y;

      MetaDrawSpec *width;

      MetaDrawSpec *height;

      double start_angle;

      double extent_angle;

    } arc;

    struct {

      MetaDrawSpec *x;

      MetaDrawSpec *y;

      MetaDrawSpec *width;

      MetaDrawSpec *height;

    } clip;

    struct {

      MetaColorSpec *color_spec;

      MetaAlphaGradientSpec *alpha_spec;

      MetaDrawSpec *x;

      MetaDrawSpec *y;

      MetaDrawSpec *width;

      MetaDrawSpec *height;

    } tint;

    struct {

      MetaGradientSpec *gradient_spec;

      MetaAlphaGradientSpec *alpha_spec;

      MetaDrawSpec *x;

      MetaDrawSpec *y;

      MetaDrawSpec *width;

      MetaDrawSpec *height;

    } gradient;

    struct {

      MetaColorSpec *colorize_spec;

      MetaAlphaGradientSpec *alpha_spec;

      GdkPixbuf *pixbuf;

      MetaDrawSpec *x;

      MetaDrawSpec *y;

      MetaDrawSpec *width;

      MetaDrawSpec *height;

      guint32 colorize_cache_pixel;

      GdkPixbuf *colorize_cache_pixbuf;

      MetaImageFillType fill_type;

      unsigned int vertical_stripes : 1;

      unsigned int horizontal_stripes : 1;

    } image;

    struct {

      GtkStateFlags state;

      GtkShadowType shadow;

      GtkArrowType arrow;

      gboolean filled;

      MetaDrawSpec *x;

      MetaDrawSpec *y;

      MetaDrawSpec *width;

      MetaDrawSpec *height;

    } gtk_arrow;

    struct {

      GtkStateFlags state;

      GtkShadowType shadow;

      MetaDrawSpec *x;

      MetaDrawSpec *y;

      MetaDrawSpec *width;

      MetaDrawSpec *height;

    } gtk_box;

    struct {

      GtkStateFlags state;

      MetaDrawSpec *x;

      MetaDrawSpec *y1;

      MetaDrawSpec *y2;

    } gtk_vline;

    struct {

      MetaAlphaGradientSpec *alpha_spec;

      MetaDrawSpec *x;

      MetaDrawSpec *y;

      MetaDrawSpec *width;

      MetaDrawSpec *height;

      MetaImageFillType fill_type;

    } icon;

    struct {

      MetaColorSpec *color_spec;

      MetaDrawSpec *x;

      MetaDrawSpec *y;

      MetaDrawSpec *ellipsize_width;

    } title;

    struct {

      MetaDrawOpList *op_list;

      MetaDrawSpec *x;

      MetaDrawSpec *y;

      MetaDrawSpec *width;

      MetaDrawSpec *height;

    } op_list;

    struct {

      MetaDrawOpList *op_list;

      MetaDrawSpec *x;

      MetaDrawSpec *y;

      MetaDrawSpec *width;

      MetaDrawSpec *height;

      MetaDrawSpec *tile_xoffset;

      MetaDrawSpec *tile_yoffset;

      MetaDrawSpec *tile_width;

      MetaDrawSpec *tile_height;

    } tile;

  } data;

};

G_GNUC_INTERNAL

MetaDrawOp     *meta_draw_op_new                  (MetaDrawType           type);

G_GNUC_INTERNAL

void            meta_draw_op_free                 (MetaDrawOp            *op);

G_GNUC_INTERNAL

MetaDrawOpList *meta_draw_op_list_new             (int                    n_preallocs);

G_GNUC_INTERNAL

void            meta_draw_op_list_ref             (MetaDrawOpList        *op_list);

G_GNUC_INTERNAL

void            meta_draw_op_list_unref           (MetaDrawOpList        *op_list);

G_GNUC_INTERNAL

void            meta_draw_op_list_draw_with_style (const MetaDrawOpList  *op_list,

                                                   GtkStyleContext       *context,

                                                   cairo_t               *cr,

                                                   const MetaDrawInfo    *info,

                                                   MetaRectangleDouble    rect);

G_GNUC_INTERNAL

void            meta_draw_op_list_append          (MetaDrawOpList        *op_list,

                                                   MetaDrawOp            *op);

G_GNUC_INTERNAL

gboolean        meta_draw_op_list_validate        (MetaDrawOpList        *op_list,

                                                   GError               **error);

G_GNUC_INTERNAL

gboolean        meta_draw_op_list_contains        (MetaDrawOpList        *op_list,

                                                   MetaDrawOpList        *child);

G_END_DECLS

#endif