/*

Simple DirectMedia Layer

Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>

This software is provided 'as-is', without any express or implied

warranty. In no event will the authors be held liable for any damages

arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,

including commercial applications, and to alter it and redistribute it

freely, subject to the following restrictions:

1. The origin of this software must not be misrepresented; you must not

claim that you wrote the original software. If you use this software

in a product, an acknowledgment in the product documentation would be

appreciated but is not required.

2. Altered source versions must be plainly marked as such, and must not be

misrepresented as being the original software.

3. This notice may not be removed or altered from any source distribution.

*/

/*

Contributed by Brandon Schaefer, <brandon.schaefer@canonical.com>

*/

#include "../../SDL_internal.h"

#if SDL_VIDEO_DRIVER_MIR

#include "../../events/SDL_events_c.h"

#include "../../events/SDL_keyboard_c.h"

#include "../../events/SDL_touch_c.h"

#include "../../events/scancodes_xfree86.h"

#include "SDL_mirevents.h"

#include "SDL_mirwindow.h"

#include <xkbcommon/xkbcommon.h>

#include "SDL_mirdyn.h"

static void

HandleKeyText(int32_t key_code)

{

char text[8];

int size = 0;

size = MIR_xkb_keysym_to_utf8(key_code, text, sizeof text);

if (size > 0) {

text[size] = '\0';

SDL_SendKeyboardText(text);

}

}

static void

CheckKeyboardFocus(SDL_Window* sdl_window)

{

SDL_Window* keyboard_window = SDL_GetKeyboardFocus();

if (keyboard_window != sdl_window)

SDL_SetKeyboardFocus(sdl_window);

}

/* FIXME

Mir still needs to implement its IM API, for now we assume

a single key press produces a character.

*/

static void

HandleKeyEvent(MirKeyEvent const ev, SDL_Window* window)

{

uint32_t scancode = SDL_SCANCODE_UNKNOWN;

Uint8 key_state = ev.action == mir_key_action_up ? SDL_RELEASED : SDL_PRESSED;

CheckKeyboardFocus(window);

if (ev.scan_code < SDL_arraysize(xfree86_scancode_table2))

scancode = xfree86_scancode_table2[ev.scan_code];

if (scancode != SDL_SCANCODE_UNKNOWN)

SDL_SendKeyboardKey(key_state, scancode);

if (key_state == SDL_PRESSED)

HandleKeyText(ev.key_code);

}

static void

HandleMouseButton(SDL_Window* sdl_window, Uint8 state, MirMotionButton button_state)

{

static uint32_t last_sdl_button;

uint32_t sdl_button;

switch (button_state) {

case mir_motion_button_primary:

sdl_button = SDL_BUTTON_LEFT;

break;

case mir_motion_button_secondary:

sdl_button = SDL_BUTTON_RIGHT;

break;

case mir_motion_button_tertiary:

sdl_button = SDL_BUTTON_MIDDLE;

break;

case mir_motion_button_forward:

sdl_button = SDL_BUTTON_X1;

break;

case mir_motion_button_back:

sdl_button = SDL_BUTTON_X2;

break;

default:

sdl_button = last_sdl_button;

break;

}

last_sdl_button = sdl_button;

SDL_SendMouseButton(sdl_window, 0, state, sdl_button);

}

static void

HandleMouseMotion(SDL_Window* sdl_window, int x, int y)

{

SDL_SendMouseMotion(sdl_window, 0, 0, x, y);

}

static void

HandleTouchPress(int device_id, int source_id, SDL_bool down, float x, float y, float pressure)

{

SDL_SendTouch(device_id, source_id, down, x, y, pressure);

}

static void

HandleTouchMotion(int device_id, int source_id, float x, float y, float pressure)

{

SDL_SendTouchMotion(device_id, source_id, x, y, pressure);

}

static void

HandleMouseScroll(SDL_Window* sdl_window, int hscroll, int vscroll)

{

SDL_SendMouseWheel(sdl_window, 0, hscroll, vscroll);

}

static void

AddTouchDevice(int device_id)

{

if (SDL_AddTouch(device_id, "") < 0)

SDL_SetError("Error: can't add touch %s, %d", __FILE__, __LINE__);

}

static void

HandleTouchEvent(MirMotionEvent const motion, int cord_index, SDL_Window* sdl_window)

{

int device_id = motion.device_id;

int id = motion.pointer_coordinates[cord_index].id;

int width = sdl_window->w;

int height = sdl_window->h;

float x = motion.pointer_coordinates[cord_index].x;

float y = motion.pointer_coordinates[cord_index].y;

float n_x = x / width;

float n_y = y / height;

float pressure = motion.pointer_coordinates[cord_index].pressure;

AddTouchDevice(motion.device_id);

switch (motion.action) {

case mir_motion_action_down:

case mir_motion_action_pointer_down:

HandleTouchPress(device_id, id, SDL_TRUE, n_x, n_y, pressure);

break;

case mir_motion_action_up:

case mir_motion_action_pointer_up:

HandleTouchPress(device_id, id, SDL_FALSE, n_x, n_y, pressure);

break;

case mir_motion_action_hover_move:

case mir_motion_action_move:

HandleTouchMotion(device_id, id, n_x, n_y, pressure);

break;

default:

break;

}

}

static void

HandleMouseEvent(MirMotionEvent const motion, int cord_index, SDL_Window* sdl_window)

{

SDL_SetMouseFocus(sdl_window);

switch (motion.action) {

case mir_motion_action_down:

case mir_motion_action_pointer_down:

HandleMouseButton(sdl_window, SDL_PRESSED, motion.button_state);

break;

case mir_motion_action_up:

case mir_motion_action_pointer_up:

HandleMouseButton(sdl_window, SDL_RELEASED, motion.button_state);

break;

case mir_motion_action_hover_move:

case mir_motion_action_move:

HandleMouseMotion(sdl_window,

motion.pointer_coordinates[cord_index].x,

motion.pointer_coordinates[cord_index].y);

break;

case mir_motion_action_outside:

SDL_SetMouseFocus(NULL);

break;

case mir_motion_action_scroll:

HandleMouseScroll(sdl_window,

motion.pointer_coordinates[cord_index].hscroll,

motion.pointer_coordinates[cord_index].vscroll);

break;

case mir_motion_action_cancel:

case mir_motion_action_hover_enter:

case mir_motion_action_hover_exit:

break;

default:

break;

}

}

static void

HandleMotionEvent(MirMotionEvent const motion, SDL_Window* sdl_window)

{

int cord_index;

for (cord_index = 0; cord_index < motion.pointer_count; cord_index++) {

if (motion.pointer_coordinates[cord_index].tool_type == mir_motion_tool_type_mouse) {

HandleMouseEvent(motion, cord_index, sdl_window);

}

else if (motion.pointer_coordinates[cord_index].tool_type == mir_motion_tool_type_finger) {

HandleTouchEvent(motion, cord_index, sdl_window);

}

}

}

void

MIR_HandleInput(MirSurface* surface, MirEvent const* ev, void* context)

{

SDL_Window* window = (SDL_Window*)context;

switch (ev->type) {

case (mir_event_type_key):

HandleKeyEvent(ev->key, window);

break;

case (mir_event_type_motion):

HandleMotionEvent(ev->motion, window);

break;

default:

break;

}

}

#endif /* SDL_VIDEO_DRIVER_MIR */

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