kitty/glfw/wl_init.c
2018-03-31 12:21:37 +05:30

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//========================================================================
// GLFW 3.3 Wayland - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2014 Jonas Ådahl <jadahl@gmail.com>
//
// 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.
//
//========================================================================
#include "internal.h"
#include <assert.h>
#include <linux/input.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <unistd.h>
#include <wayland-client.h>
static inline int min(int n1, int n2)
{
return n1 < n2 ? n1 : n2;
}
static _GLFWwindow* findWindowFromDecorationSurface(struct wl_surface* surface, int* which)
{
int focus;
_GLFWwindow* window = _glfw.windowListHead;
if (!which)
which = &focus;
while (window)
{
if (surface == window->wl.decorations.top.surface)
{
*which = topDecoration;
break;
}
if (surface == window->wl.decorations.left.surface)
{
*which = leftDecoration;
break;
}
if (surface == window->wl.decorations.right.surface)
{
*which = rightDecoration;
break;
}
if (surface == window->wl.decorations.bottom.surface)
{
*which = bottomDecoration;
break;
}
window = window->next;
}
return window;
}
static void pointerHandleEnter(void* data,
struct wl_pointer* pointer,
uint32_t serial,
struct wl_surface* surface,
wl_fixed_t sx,
wl_fixed_t sy)
{
// Happens in the case we just destroyed the surface.
if (!surface)
return;
int focus = 0;
_GLFWwindow* window = wl_surface_get_user_data(surface);
if (!window)
{
window = findWindowFromDecorationSurface(surface, &focus);
if (!window)
return;
}
window->wl.decorations.focus = focus;
_glfw.wl.pointerSerial = serial;
_glfw.wl.pointerFocus = window;
window->wl.hovered = GLFW_TRUE;
_glfwPlatformSetCursor(window, window->wl.currentCursor);
_glfwInputCursorEnter(window, GLFW_TRUE);
}
static void pointerHandleLeave(void* data,
struct wl_pointer* pointer,
uint32_t serial,
struct wl_surface* surface)
{
_GLFWwindow* window = _glfw.wl.pointerFocus;
if (!window)
return;
window->wl.hovered = GLFW_FALSE;
_glfw.wl.pointerSerial = serial;
_glfw.wl.pointerFocus = NULL;
_glfwInputCursorEnter(window, GLFW_FALSE);
}
static void setCursor(const char* name)
{
struct wl_buffer* buffer;
struct wl_cursor* cursor;
struct wl_cursor_image* image;
struct wl_surface* surface = _glfw.wl.cursorSurface;
cursor = wl_cursor_theme_get_cursor(_glfw.wl.cursorTheme,
name);
if (!cursor)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Standard cursor not found");
return;
}
image = cursor->images[0];
if (!image)
return;
buffer = wl_cursor_image_get_buffer(image);
if (!buffer)
return;
wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.pointerSerial,
surface,
image->hotspot_x,
image->hotspot_y);
wl_surface_attach(surface, buffer, 0, 0);
wl_surface_damage(surface, 0, 0,
image->width, image->height);
wl_surface_commit(surface);
}
static void pointerHandleMotion(void* data,
struct wl_pointer* pointer,
uint32_t time,
wl_fixed_t sx,
wl_fixed_t sy)
{
_GLFWwindow* window = _glfw.wl.pointerFocus;
const char* cursorName;
if (!window)
return;
if (window->cursorMode == GLFW_CURSOR_DISABLED)
return;
else
{
window->wl.cursorPosX = wl_fixed_to_double(sx);
window->wl.cursorPosY = wl_fixed_to_double(sy);
}
switch (window->wl.decorations.focus)
{
case mainWindow:
_glfwInputCursorPos(window,
wl_fixed_to_double(sx),
wl_fixed_to_double(sy));
return;
case topDecoration:
if (window->wl.cursorPosY < _GLFW_DECORATION_WIDTH)
cursorName = "n-resize";
else
cursorName = "left_ptr";
break;
case leftDecoration:
if (window->wl.cursorPosY < _GLFW_DECORATION_WIDTH)
cursorName = "nw-resize";
else
cursorName = "w-resize";
break;
case rightDecoration:
if (window->wl.cursorPosY < _GLFW_DECORATION_WIDTH)
cursorName = "ne-resize";
else
cursorName = "e-resize";
break;
case bottomDecoration:
if (window->wl.cursorPosX < _GLFW_DECORATION_WIDTH)
cursorName = "sw-resize";
else if (window->wl.cursorPosX > window->wl.width + _GLFW_DECORATION_WIDTH)
cursorName = "se-resize";
else
cursorName = "s-resize";
break;
default:
assert(0);
}
setCursor(cursorName);
}
static void pointerHandleButton(void* data,
struct wl_pointer* pointer,
uint32_t serial,
uint32_t time,
uint32_t button,
uint32_t state)
{
_GLFWwindow* window = _glfw.wl.pointerFocus;
int glfwButton;
// Both xdg-shell and wl_shell use the same values.
uint32_t edges = WL_SHELL_SURFACE_RESIZE_NONE;
if (!window)
return;
if (button == BTN_LEFT)
{
switch (window->wl.decorations.focus)
{
case mainWindow:
break;
case topDecoration:
if (window->wl.cursorPosY < _GLFW_DECORATION_WIDTH)
edges = WL_SHELL_SURFACE_RESIZE_TOP;
else
{
if (window->wl.xdg.toplevel)
xdg_toplevel_move(window->wl.xdg.toplevel, _glfw.wl.seat, serial);
else
wl_shell_surface_move(window->wl.shellSurface, _glfw.wl.seat, serial);
}
break;
case leftDecoration:
if (window->wl.cursorPosY < _GLFW_DECORATION_WIDTH)
edges = WL_SHELL_SURFACE_RESIZE_TOP_LEFT;
else
edges = WL_SHELL_SURFACE_RESIZE_LEFT;
break;
case rightDecoration:
if (window->wl.cursorPosY < _GLFW_DECORATION_WIDTH)
edges = WL_SHELL_SURFACE_RESIZE_TOP_RIGHT;
else
edges = WL_SHELL_SURFACE_RESIZE_RIGHT;
break;
case bottomDecoration:
if (window->wl.cursorPosX < _GLFW_DECORATION_WIDTH)
edges = WL_SHELL_SURFACE_RESIZE_BOTTOM_LEFT;
else if (window->wl.cursorPosX > window->wl.width + _GLFW_DECORATION_WIDTH)
edges = WL_SHELL_SURFACE_RESIZE_BOTTOM_RIGHT;
else
edges = WL_SHELL_SURFACE_RESIZE_BOTTOM;
break;
default:
assert(0);
}
if (edges != WL_SHELL_SURFACE_RESIZE_NONE)
{
if (window->wl.xdg.toplevel)
xdg_toplevel_resize(window->wl.xdg.toplevel, _glfw.wl.seat,
serial, edges);
else
wl_shell_surface_resize(window->wl.shellSurface, _glfw.wl.seat,
serial, edges);
}
}
else if (button == BTN_RIGHT)
{
if (window->wl.decorations.focus != mainWindow && window->wl.xdg.toplevel)
{
xdg_toplevel_show_window_menu(window->wl.xdg.toplevel,
_glfw.wl.seat, serial,
window->wl.cursorPosX,
window->wl.cursorPosY);
return;
}
}
// Dont pass the button to the user if it was related to a decoration.
if (window->wl.decorations.focus != mainWindow)
return;
_glfw.wl.pointerSerial = serial;
/* Makes left, right and middle 0, 1 and 2. Overall order follows evdev
* codes. */
glfwButton = button - BTN_LEFT;
_glfwInputMouseClick(window,
glfwButton,
state == WL_POINTER_BUTTON_STATE_PRESSED
? GLFW_PRESS
: GLFW_RELEASE,
_glfw.wl.xkb.modifiers);
}
static void pointerHandleAxis(void* data,
struct wl_pointer* pointer,
uint32_t time,
uint32_t axis,
wl_fixed_t value)
{
_GLFWwindow* window = _glfw.wl.pointerFocus;
double x = 0.0, y = 0.0;
// Wayland scroll events are in pointer motion coordinate space (think two
// finger scroll). The factor 10 is commonly used to convert to "scroll
// step means 1.0.
const double scrollFactor = 1.0 / 10.0;
if (!window)
return;
assert(axis == WL_POINTER_AXIS_HORIZONTAL_SCROLL ||
axis == WL_POINTER_AXIS_VERTICAL_SCROLL);
if (axis == WL_POINTER_AXIS_HORIZONTAL_SCROLL)
x = wl_fixed_to_double(value) * scrollFactor;
else if (axis == WL_POINTER_AXIS_VERTICAL_SCROLL)
y = wl_fixed_to_double(value) * scrollFactor;
_glfwInputScroll(window, x, y);
}
static const struct wl_pointer_listener pointerListener = {
pointerHandleEnter,
pointerHandleLeave,
pointerHandleMotion,
pointerHandleButton,
pointerHandleAxis,
};
static void keyboardHandleKeymap(void* data,
struct wl_keyboard* keyboard,
uint32_t format,
int fd,
uint32_t size)
{
char* mapStr;
if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1)
{
close(fd);
return;
}
mapStr = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
if (mapStr == MAP_FAILED) {
close(fd);
return;
}
glfw_xkb_compile_keymap(&_glfw.wl.xkb, mapStr);
munmap(mapStr, size);
close(fd);
}
static void keyboardHandleEnter(void* data,
struct wl_keyboard* keyboard,
uint32_t serial,
struct wl_surface* surface,
struct wl_array* keys)
{
// Happens in the case we just destroyed the surface.
if (!surface)
return;
_GLFWwindow* window = wl_surface_get_user_data(surface);
if (!window)
{
window = findWindowFromDecorationSurface(surface, NULL);
if (!window)
return;
}
_glfw.wl.keyboardFocus = window;
_glfwInputWindowFocus(window, GLFW_TRUE);
}
static void keyboardHandleLeave(void* data,
struct wl_keyboard* keyboard,
uint32_t serial,
struct wl_surface* surface)
{
_GLFWwindow* window = _glfw.wl.keyboardFocus;
if (!window)
return;
_glfw.wl.keyboardFocus = NULL;
_glfwInputWindowFocus(window, GLFW_FALSE);
}
static void keyboardHandleKey(void* data,
struct wl_keyboard* keyboard,
uint32_t serial,
uint32_t time,
uint32_t key,
uint32_t state)
{
_GLFWwindow* window = _glfw.wl.keyboardFocus;
if (!window)
return;
int action = state == WL_KEYBOARD_KEY_STATE_PRESSED ? GLFW_PRESS : GLFW_RELEASE;
glfw_xkb_handle_key_event(window, &_glfw.wl.xkb, key, action);
_glfw.wl.keyRepeatInfo.nextRepeatAt = 0;
if (action == GLFW_PRESS && _glfw.wl.keyboardRepeatRate > 0 && glfw_xkb_should_repeat(&_glfw.wl.xkb, key))
{
_glfw.wl.keyRepeatInfo.key = key;
_glfw.wl.keyRepeatInfo.nextRepeatAt = glfwGetTime() + (double)(_glfw.wl.keyboardRepeatDelay) / 1000.0;
_glfw.wl.keyRepeatInfo.keyboardFocus = window;
}
}
static void keyboardHandleModifiers(void* data,
struct wl_keyboard* keyboard,
uint32_t serial,
uint32_t modsDepressed,
uint32_t modsLatched,
uint32_t modsLocked,
uint32_t group)
{
glfw_xkb_update_modifiers(&_glfw.wl.xkb, modsDepressed, modsLatched, modsLocked, 0, 0, group);
}
static void keyboardHandleRepeatInfo(void* data,
struct wl_keyboard* keyboard,
int32_t rate,
int32_t delay)
{
if (keyboard != _glfw.wl.keyboard)
return;
_glfw.wl.keyboardRepeatRate = rate;
_glfw.wl.keyboardRepeatDelay = delay;
}
static const struct wl_keyboard_listener keyboardListener = {
keyboardHandleKeymap,
keyboardHandleEnter,
keyboardHandleLeave,
keyboardHandleKey,
keyboardHandleModifiers,
keyboardHandleRepeatInfo,
};
static void seatHandleCapabilities(void* data,
struct wl_seat* seat,
enum wl_seat_capability caps)
{
if ((caps & WL_SEAT_CAPABILITY_POINTER) && !_glfw.wl.pointer)
{
_glfw.wl.pointer = wl_seat_get_pointer(seat);
wl_pointer_add_listener(_glfw.wl.pointer, &pointerListener, NULL);
}
else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && _glfw.wl.pointer)
{
wl_pointer_destroy(_glfw.wl.pointer);
_glfw.wl.pointer = NULL;
}
if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !_glfw.wl.keyboard)
{
_glfw.wl.keyboard = wl_seat_get_keyboard(seat);
wl_keyboard_add_listener(_glfw.wl.keyboard, &keyboardListener, NULL);
}
else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && _glfw.wl.keyboard)
{
wl_keyboard_destroy(_glfw.wl.keyboard);
_glfw.wl.keyboard = NULL;
}
}
static void seatHandleName(void* data,
struct wl_seat* seat,
const char* name)
{
}
static const struct wl_seat_listener seatListener = {
seatHandleCapabilities,
seatHandleName,
};
static void wmBaseHandlePing(void* data,
struct xdg_wm_base* wmBase,
uint32_t serial)
{
xdg_wm_base_pong(wmBase, serial);
}
static const struct xdg_wm_base_listener wmBaseListener = {
wmBaseHandlePing
};
static void registryHandleGlobal(void* data,
struct wl_registry* registry,
uint32_t name,
const char* interface,
uint32_t version)
{
if (strcmp(interface, "wl_compositor") == 0)
{
_glfw.wl.compositorVersion = min(3, version);
_glfw.wl.compositor =
wl_registry_bind(registry, name, &wl_compositor_interface,
_glfw.wl.compositorVersion);
}
else if (strcmp(interface, "wl_subcompositor") == 0)
{
_glfw.wl.subcompositor =
wl_registry_bind(registry, name, &wl_subcompositor_interface, 1);
}
else if (strcmp(interface, "wl_shm") == 0)
{
_glfw.wl.shm =
wl_registry_bind(registry, name, &wl_shm_interface, 1);
}
else if (strcmp(interface, "wl_shell") == 0)
{
_glfw.wl.shell =
wl_registry_bind(registry, name, &wl_shell_interface, 1);
}
else if (strcmp(interface, "wl_output") == 0)
{
_glfwAddOutputWayland(name, version);
}
else if (strcmp(interface, "wl_seat") == 0)
{
if (!_glfw.wl.seat)
{
_glfw.wl.seatVersion = min(4, version);
_glfw.wl.seat =
wl_registry_bind(registry, name, &wl_seat_interface,
_glfw.wl.seatVersion);
wl_seat_add_listener(_glfw.wl.seat, &seatListener, NULL);
}
}
else if (strcmp(interface, "xdg_wm_base") == 0)
{
_glfw.wl.wmBase =
wl_registry_bind(registry, name, &xdg_wm_base_interface, 1);
xdg_wm_base_add_listener(_glfw.wl.wmBase, &wmBaseListener, NULL);
}
else if (strcmp(interface, "wp_viewporter") == 0)
{
_glfw.wl.viewporter =
wl_registry_bind(registry, name, &wp_viewporter_interface, 1);
}
else if (strcmp(interface, "zwp_relative_pointer_manager_v1") == 0)
{
_glfw.wl.relativePointerManager =
wl_registry_bind(registry, name,
&zwp_relative_pointer_manager_v1_interface,
1);
}
else if (strcmp(interface, "zwp_pointer_constraints_v1") == 0)
{
_glfw.wl.pointerConstraints =
wl_registry_bind(registry, name,
&zwp_pointer_constraints_v1_interface,
1);
}
else if (strcmp(interface, "zwp_idle_inhibit_manager_v1") == 0)
{
_glfw.wl.idleInhibitManager =
wl_registry_bind(registry, name,
&zwp_idle_inhibit_manager_v1_interface,
1);
}
}
static void registryHandleGlobalRemove(void *data,
struct wl_registry *registry,
uint32_t name)
{
int i;
_GLFWmonitor* monitor;
for (i = 0; i < _glfw.monitorCount; ++i)
{
monitor = _glfw.monitors[i];
if (monitor->wl.name == name)
{
_glfwInputMonitor(monitor, GLFW_DISCONNECTED, 0);
return;
}
}
}
static const struct wl_registry_listener registryListener = {
registryHandleGlobal,
registryHandleGlobalRemove
};
//////////////////////////////////////////////////////////////////////////
////// GLFW platform API //////
//////////////////////////////////////////////////////////////////////////
int _glfwPlatformInit(void)
{
_glfw.wl.cursor.handle = _glfw_dlopen("libwayland-cursor.so.0");
if (!_glfw.wl.cursor.handle)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Failed to open libwayland-cursor");
return GLFW_FALSE;
}
_glfw.wl.cursor.theme_load = (PFN_wl_cursor_theme_load)
_glfw_dlsym(_glfw.wl.cursor.handle, "wl_cursor_theme_load");
_glfw.wl.cursor.theme_destroy = (PFN_wl_cursor_theme_destroy)
_glfw_dlsym(_glfw.wl.cursor.handle, "wl_cursor_theme_destroy");
_glfw.wl.cursor.theme_get_cursor = (PFN_wl_cursor_theme_get_cursor)
_glfw_dlsym(_glfw.wl.cursor.handle, "wl_cursor_theme_get_cursor");
_glfw.wl.cursor.image_get_buffer = (PFN_wl_cursor_image_get_buffer)
_glfw_dlsym(_glfw.wl.cursor.handle, "wl_cursor_image_get_buffer");
_glfw.wl.egl.handle = _glfw_dlopen("libwayland-egl.so.1");
if (!_glfw.wl.egl.handle)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Failed to open libwayland-egl");
return GLFW_FALSE;
}
_glfw.wl.egl.window_create = (PFN_wl_egl_window_create)
_glfw_dlsym(_glfw.wl.egl.handle, "wl_egl_window_create");
_glfw.wl.egl.window_destroy = (PFN_wl_egl_window_destroy)
_glfw_dlsym(_glfw.wl.egl.handle, "wl_egl_window_destroy");
_glfw.wl.egl.window_resize = (PFN_wl_egl_window_resize)
_glfw_dlsym(_glfw.wl.egl.handle, "wl_egl_window_resize");
_glfw.wl.display = wl_display_connect(NULL);
if (!_glfw.wl.display)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Failed to connect to display");
return GLFW_FALSE;
}
_glfw.wl.registry = wl_display_get_registry(_glfw.wl.display);
wl_registry_add_listener(_glfw.wl.registry, &registryListener, NULL);
if (!glfw_xkb_create_context(&_glfw.wl.xkb)) return GLFW_FALSE;
// Sync so we got all registry objects
wl_display_roundtrip(_glfw.wl.display);
// Sync so we got all initial output events
wl_display_roundtrip(_glfw.wl.display);
#ifdef __linux__
if (!_glfwInitJoysticksLinux())
return GLFW_FALSE;
#endif
_glfwInitTimerPOSIX();
if (_glfw.wl.pointer && _glfw.wl.shm)
{
_glfw.wl.cursorTheme = wl_cursor_theme_load(NULL, 32, _glfw.wl.shm);
if (!_glfw.wl.cursorTheme)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Wayland: Unable to load default cursor theme");
return GLFW_FALSE;
}
_glfw.wl.cursorSurface =
wl_compositor_create_surface(_glfw.wl.compositor);
}
return GLFW_TRUE;
}
void _glfwPlatformTerminate(void)
{
#ifdef __linux__
_glfwTerminateJoysticksLinux();
#endif
_glfwTerminateEGL();
if (_glfw.wl.egl.handle)
{
_glfw_dlclose(_glfw.wl.egl.handle);
_glfw.wl.egl.handle = NULL;
}
glfw_xkb_release(&_glfw.wl.xkb);
if (_glfw.wl.cursorTheme)
wl_cursor_theme_destroy(_glfw.wl.cursorTheme);
if (_glfw.wl.cursor.handle)
{
_glfw_dlclose(_glfw.wl.cursor.handle);
_glfw.wl.cursor.handle = NULL;
}
if (_glfw.wl.cursorSurface)
wl_surface_destroy(_glfw.wl.cursorSurface);
if (_glfw.wl.subcompositor)
wl_subcompositor_destroy(_glfw.wl.subcompositor);
if (_glfw.wl.compositor)
wl_compositor_destroy(_glfw.wl.compositor);
if (_glfw.wl.shm)
wl_shm_destroy(_glfw.wl.shm);
if (_glfw.wl.shell)
wl_shell_destroy(_glfw.wl.shell);
if (_glfw.wl.viewporter)
wp_viewporter_destroy(_glfw.wl.viewporter);
if (_glfw.wl.wmBase)
xdg_wm_base_destroy(_glfw.wl.wmBase);
if (_glfw.wl.pointer)
wl_pointer_destroy(_glfw.wl.pointer);
if (_glfw.wl.keyboard)
wl_keyboard_destroy(_glfw.wl.keyboard);
if (_glfw.wl.seat)
wl_seat_destroy(_glfw.wl.seat);
if (_glfw.wl.relativePointerManager)
zwp_relative_pointer_manager_v1_destroy(_glfw.wl.relativePointerManager);
if (_glfw.wl.pointerConstraints)
zwp_pointer_constraints_v1_destroy(_glfw.wl.pointerConstraints);
if (_glfw.wl.idleInhibitManager)
zwp_idle_inhibit_manager_v1_destroy(_glfw.wl.idleInhibitManager);
if (_glfw.wl.registry)
wl_registry_destroy(_glfw.wl.registry);
if (_glfw.wl.display)
{
wl_display_flush(_glfw.wl.display);
wl_display_disconnect(_glfw.wl.display);
}
}
const char* _glfwPlatformGetVersionString(void)
{
return _GLFW_VERSION_NUMBER " Wayland EGL"
#if defined(_POSIX_TIMERS) && defined(_POSIX_MONOTONIC_CLOCK)
" clock_gettime"
#else
" gettimeofday"
#endif
" evdev"
#if defined(_GLFW_BUILD_DLL)
" shared"
#endif
;
}