/*
 * 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