/*
   * Copyright © 2008 Kristian Høgsberg
   *
   * 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 (including the
   * next paragraph) 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 _CAIRO_UTIL_H
  #define _CAIRO_UTIL_H
  
  #include <stdint.h>
  #include <cairo.h>
  
  #include <wayland-client.h>
  #include <wayland-util.h>
  
  void
  surface_flush_device(cairo_surface_t *surface);
  
  void
  render_shadow(cairo_t *cr, cairo_surface_t *surface,
  		int x, int y, int width, int height, int margin, int top_margin);
  
  void
  tile_source(cairo_t *cr, cairo_surface_t *surface,
  		int x, int y, int width, int height, int margin, int top_margin);
  
  void
  rounded_rect(cairo_t *cr, int x0, int y0, int x1, int y1, int radius);
  
  cairo_surface_t *
  load_cairo_surface(const char *filename);
  
  struct theme
  {
  	cairo_surface_t *active_frame;
  	cairo_surface_t *inactive_frame;
  	cairo_surface_t *shadow;
  	int              frame_radius;
  	int              margin;
  	int              width;
  	int              titlebar_height;
  };
  
  struct theme *
  theme_create(void);
  void
  theme_destroy(struct theme *t);
  
  enum
  {
  	THEME_FRAME_ACTIVE    = 1,
  	THEME_FRAME_MAXIMIZED = 2,
  	THEME_FRAME_NO_TITLE  = 4
  };
  
  void
  theme_set_background_source(struct theme *t, cairo_t *cr, uint32_t flags);
  void
  theme_render_frame(struct theme *t,
  		cairo_t *cr, int width, int height,
  		const char *title, cairo_rectangle_int_t *title_rect,
  		struct wl_list *buttons, uint32_t flags);
  
  enum theme_location
  {
  	THEME_LOCATION_INTERIOR              = 0,
  	THEME_LOCATION_RESIZING_TOP          = 1,
  	THEME_LOCATION_RESIZING_BOTTOM       = 2,
  	THEME_LOCATION_RESIZING_LEFT         = 4,
  	THEME_LOCATION_RESIZING_TOP_LEFT     = 5,
  	THEME_LOCATION_RESIZING_BOTTOM_LEFT  = 6,
  	THEME_LOCATION_RESIZING_RIGHT        = 8,
  	THEME_LOCATION_RESIZING_TOP_RIGHT    = 9,
  	THEME_LOCATION_RESIZING_BOTTOM_RIGHT = 10,
  	THEME_LOCATION_RESIZING_MASK         = 15,
  	THEME_LOCATION_EXTERIOR              = 16,
  	THEME_LOCATION_TITLEBAR              = 17,
  	THEME_LOCATION_CLIENT_AREA           = 18,
  };
  
  enum theme_location
  theme_get_location(struct theme *t, int x, int y, int width, int height, int flags);
  
  struct frame;
  
  enum frame_status
  {
  	FRAME_STATUS_NONE     = 0,
  	FRAME_STATUS_REPAINT  = 0x1,
  	FRAME_STATUS_MINIMIZE = 0x2,
  	FRAME_STATUS_MAXIMIZE = 0x4,
  	FRAME_STATUS_CLOSE    = 0x8,
  	FRAME_STATUS_MENU     = 0x10,
  	FRAME_STATUS_RESIZE   = 0x20,
  	FRAME_STATUS_MOVE     = 0x40,
  	FRAME_STATUS_ALL      = 0x7f
  };
  
  enum frame_flag
  {
  	FRAME_FLAG_ACTIVE    = 0x1,
  	FRAME_FLAG_MAXIMIZED = 0x2
  };
  
  enum
  {
  	FRAME_BUTTON_NONE     = 0,
  	FRAME_BUTTON_CLOSE    = 0x1,
  	FRAME_BUTTON_MAXIMIZE = 0x2,
  	FRAME_BUTTON_MINIMIZE = 0x4,
  	FRAME_BUTTON_ALL      = 0x7
  };
  
  struct frame *
  frame_create(struct theme *t, int32_t width, int32_t height, uint32_t buttons,
  		const char *title, cairo_surface_t *icon);
  
  void
  frame_destroy(struct frame *frame);
  
  /* May set FRAME_STATUS_REPAINT */
  int
  frame_set_title(struct frame *frame, const char *title);
  
  /* May set FRAME_STATUS_REPAINT */
  void
  frame_set_icon(struct frame *frame, cairo_surface_t *icon);
  
  /* May set FRAME_STATUS_REPAINT */
  void
  frame_set_flag(struct frame *frame, enum frame_flag flag);
  
  /* May set FRAME_STATUS_REPAINT */
  void
  frame_unset_flag(struct frame *frame, enum frame_flag flag);
  
  /* May set FRAME_STATUS_REPAINT */
  void
  frame_resize(struct frame *frame, int32_t width, int32_t height);
  
  /* May set FRAME_STATUS_REPAINT */
  void
  frame_resize_inside(struct frame *frame, int32_t width, int32_t height);
  
  int32_t
  frame_width(struct frame *frame);
  
  int32_t
  frame_height(struct frame *frame);
  
  void
  frame_interior(struct frame *frame, int32_t *x, int32_t *y,
  		int32_t *width, int32_t *height);
  void
  frame_input_rect(struct frame *frame, int32_t *x, int32_t *y,
  		int32_t *width, int32_t *height);
  void
  frame_opaque_rect(struct frame *frame, int32_t *x, int32_t *y,
  		int32_t *width, int32_t *height);
  
  int
  frame_get_shadow_margin(struct frame *frame);
  
  uint32_t
  frame_status(struct frame *frame);
  
  void
  frame_status_clear(struct frame *frame, enum frame_status status);
  
  /* May set FRAME_STATUS_REPAINT */
  enum theme_location
  frame_pointer_enter(struct frame *frame, void *pointer, int x, int y);
  
  /* May set FRAME_STATUS_REPAINT */
  enum theme_location
  frame_pointer_motion(struct frame *frame, void *pointer, int x, int y);
  
  /* May set FRAME_STATUS_REPAINT */
  void
  frame_pointer_leave(struct frame *frame, void *pointer);
  
  /* Call to indicate that a button has been pressed/released.  The return
   * value for a button release will be the same as for the corresponding
   * press.  This allows you to more easily track grabs.  If you want the
   * actual location, simply keep the location from the last
   * frame_pointer_motion call.
   *
   * May set:
   *	FRAME_STATUS_MINIMIZE
   *	FRAME_STATUS_MAXIMIZE
   *	FRAME_STATUS_CLOSE
   *	FRAME_STATUS_MENU
   *	FRAME_STATUS_RESIZE
   *	FRAME_STATUS_MOVE
   */
  enum theme_location
  frame_pointer_button(struct frame *frame, void *pointer,
  		uint32_t button, enum wl_pointer_button_state state);
  
  enum theme_location
  frame_touch_down(struct frame *frame, void *data, int32_t id, int x, int y);
  
  void
  frame_touch_up(struct frame *frame, void *data, int32_t id);
  
  enum theme_location
  frame_double_click(struct frame *frame, void *pointer,
  		uint32_t button, enum wl_pointer_button_state state);
  
  void
  frame_double_touch_down(struct frame *frame, void *data, int32_t id,
  		int x, int y);
  
  void
  frame_double_touch_up(struct frame *frame, void *data, int32_t id);
  
  void
  frame_repaint(struct frame *frame, cairo_t *cr);
  
  #endif