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kitty/glfw/wl_platform.h
Kovid Goyal 2435a8ccfd
Wayland GNOME: Fix incorrect window size when in some circumstances when switching between windows with window decorations disabled 
Only call wl_surface_commit() after a resize when the correct size buffer is
attached to the surface. This is ensured by setting a flag on the window that prevents
all surface commits till it is cleared. The flag is cleared at next
eglSwapBuffers().

I dont actually understand if this guarantees that the
buffer size is always correct. For example, if the back buffer is
latched when wl_egl_resize_window() is called, the backbuffer will be
correct only after two swaps (I think). Or maybe the old back buffer is
discarded, I cant find any documentation about it.

All I can say is that doing it this way seems to fix the issue.

Thanks to @jadahl for his help with tracking down the root cause.

Fixes #4802
2022-10-31 21:59:01 +05:30

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//========================================================================
// GLFW 3.4 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 <wayland-client.h>
#include <dlfcn.h>
#include <poll.h>
typedef VkFlags VkWaylandSurfaceCreateFlagsKHR;
typedef struct VkWaylandSurfaceCreateInfoKHR
{
VkStructureType sType;
const void* pNext;
VkWaylandSurfaceCreateFlagsKHR flags;
struct wl_display* display;
struct wl_surface* surface;
} VkWaylandSurfaceCreateInfoKHR;
typedef VkResult (APIENTRY *PFN_vkCreateWaylandSurfaceKHR)(VkInstance,const VkWaylandSurfaceCreateInfoKHR*,const VkAllocationCallbacks*,VkSurfaceKHR*);
typedef VkBool32 (APIENTRY *PFN_vkGetPhysicalDeviceWaylandPresentationSupportKHR)(VkPhysicalDevice,uint32_t,struct wl_display*);
#include "posix_thread.h"
#ifdef __linux__
#include "linux_joystick.h"
#else
#include "null_joystick.h"
#endif
#include "backend_utils.h"
#include "xkb_glfw.h"
#include "wl_cursors.h"
#include "wayland-xdg-shell-client-protocol.h"
#include "wayland-xdg-decoration-unstable-v1-client-protocol.h"
#include "wayland-relative-pointer-unstable-v1-client-protocol.h"
#include "wayland-pointer-constraints-unstable-v1-client-protocol.h"
#include "wayland-idle-inhibit-unstable-v1-client-protocol.h"
#include "wayland-primary-selection-unstable-v1-client-protocol.h"
#include "wayland-primary-selection-unstable-v1-client-protocol.h"
#include "wl_text_input.h"
#include "wayland-xdg-activation-v1-client-protocol.h"
#define _glfw_dlopen(name) dlopen(name, RTLD_LAZY | RTLD_LOCAL)
#define _glfw_dlclose(handle) dlclose(handle)
#define _glfw_dlsym(handle, name) dlsym(handle, name)
#define _GLFW_PLATFORM_WINDOW_STATE _GLFWwindowWayland wl
#define _GLFW_PLATFORM_LIBRARY_WINDOW_STATE _GLFWlibraryWayland wl
#define _GLFW_PLATFORM_MONITOR_STATE _GLFWmonitorWayland wl
#define _GLFW_PLATFORM_CURSOR_STATE _GLFWcursorWayland wl
#define _GLFW_PLATFORM_CONTEXT_STATE
#define _GLFW_PLATFORM_LIBRARY_CONTEXT_STATE
typedef struct wl_cursor_theme* (* PFN_wl_cursor_theme_load)(const char*, int, struct wl_shm*);
typedef void (* PFN_wl_cursor_theme_destroy)(struct wl_cursor_theme*);
typedef struct wl_cursor* (* PFN_wl_cursor_theme_get_cursor)(struct wl_cursor_theme*, const char*);
typedef struct wl_buffer* (* PFN_wl_cursor_image_get_buffer)(struct wl_cursor_image*);
#define wl_cursor_theme_load _glfw.wl.cursor.theme_load
#define wl_cursor_theme_destroy _glfw.wl.cursor.theme_destroy
#define wl_cursor_theme_get_cursor _glfw.wl.cursor.theme_get_cursor
#define wl_cursor_image_get_buffer _glfw.wl.cursor.image_get_buffer
typedef struct wl_egl_window* (* PFN_wl_egl_window_create)(struct wl_surface*, int, int);
typedef void (* PFN_wl_egl_window_destroy)(struct wl_egl_window*);
typedef void (* PFN_wl_egl_window_resize)(struct wl_egl_window*, int, int, int, int);
#define wl_egl_window_create _glfw.wl.egl.window_create
#define wl_egl_window_destroy _glfw.wl.egl.window_destroy
#define wl_egl_window_resize _glfw.wl.egl.window_resize
typedef enum _GLFWdecorationSideWayland
{
CENTRAL_WINDOW,
TOP_DECORATION,
LEFT_DECORATION,
RIGHT_DECORATION,
BOTTOM_DECORATION,
} _GLFWdecorationSideWayland;
typedef struct _GLFWWaylandBufferPair {
struct wl_buffer *a, *b, *front, *back;
struct { uint8_t *a, *b, *front, *back; } data;
bool has_pending_update;
size_t size_in_bytes, width, height, stride;
bool a_needs_to_be_destroyed, b_needs_to_be_destroyed;
} _GLFWWaylandBufferPair;
typedef struct _GLFWWaylandCSDEdge {
struct wl_surface *surface;
struct wl_subsurface *subsurface;
_GLFWWaylandBufferPair buffer;
int x, y;
} _GLFWWaylandCSDEdge;
typedef enum WaylandWindowState {
TOPLEVEL_STATE_NONE = 0,
TOPLEVEL_STATE_MAXIMIZED = 1,
TOPLEVEL_STATE_FULLSCREEN = 2,
TOPLEVEL_STATE_RESIZING = 4,
TOPLEVEL_STATE_ACTIVATED = 8,
TOPLEVEL_STATE_TILED_LEFT = 16,
TOPLEVEL_STATE_TILED_RIGHT = 32,
TOPLEVEL_STATE_TILED_TOP = 64,
TOPLEVEL_STATE_TILED_BOTTOM = 128,
} WaylandWindowState;
typedef struct glfw_wl_xdg_activation_request {
GLFWid window_id;
GLFWactivationcallback callback;
void *callback_data;
uintptr_t request_id;
void *token;
} glfw_wl_xdg_activation_request;
static const WaylandWindowState TOPLEVEL_STATE_DOCKED = TOPLEVEL_STATE_MAXIMIZED | TOPLEVEL_STATE_FULLSCREEN | TOPLEVEL_STATE_TILED_TOP | TOPLEVEL_STATE_TILED_LEFT | TOPLEVEL_STATE_TILED_RIGHT | TOPLEVEL_STATE_TILED_BOTTOM;
enum WaylandWindowPendingState {
PENDING_STATE_TOPLEVEL = 1,
PENDING_STATE_DECORATION = 2
};
// Wayland-specific per-window data
//
typedef struct _GLFWwindowWayland
{
int width, height;
bool visible;
bool hovered;
bool transparent;
struct wl_surface* surface;
bool waiting_for_swap_to_commit;
struct wl_egl_window* native;
struct wl_callback* callback;
struct {
struct xdg_surface* surface;
struct xdg_toplevel* toplevel;
struct zxdg_toplevel_decoration_v1* decoration;
} xdg;
_GLFWcursor* currentCursor;
double cursorPosX, cursorPosY, allCursorPosX, allCursorPosY;
char* title;
char appId[256];
// We need to track the monitors the window spans on to calculate the
// optimal scaling factor.
int scale;
bool initial_scale_notified;
_GLFWmonitor** monitors;
int monitorsCount;
int monitorsSize;
struct {
struct zwp_relative_pointer_v1* relativePointer;
struct zwp_locked_pointer_v1* lockedPointer;
} pointerLock;
struct zwp_idle_inhibitor_v1* idleInhibitor;
struct {
bool serverSide, buffer_destroyed;
_GLFWdecorationSideWayland focus;
_GLFWWaylandCSDEdge top, left, right, bottom;
struct {
uint8_t *data;
size_t size;
} mapping;
struct {
int width, height, scale;
bool focused;
} for_window_state;
struct {
unsigned int width, top, horizontal, vertical, visible_titlebar_height;
} metrics;
struct {
int32_t x, y, width, height;
} geometry;
struct {
uint32_t *data;
size_t for_decoration_size, stride, segments, corner_size;
} shadow_tile;
monotonic_t last_click_on_top_decoration_at;
uint32_t titlebar_color;
bool use_custom_titlebar_color;
} decorations;
struct {
unsigned long long id;
void(*callback)(unsigned long long id);
struct wl_callback *current_wl_callback;
} frameCallbackData;
struct {
int32_t width, height;
} user_requested_content_size;
bool maximize_on_first_show;
// counters for ignoring axis events following axis_discrete events in the
// same frame along the same axis
struct {
unsigned int x, y;
} axis_discrete_count;
bool surface_configured_once;
uint32_t pending_state;
struct {
int width, height;
uint32_t toplevel_states;
uint32_t decoration_mode;
} current, pending;
} _GLFWwindowWayland;
typedef enum _GLFWWaylandOfferType
{
EXPIRED,
CLIPBOARD,
DRAG_AND_DROP,
PRIMARY_SELECTION
}_GLFWWaylandOfferType ;
typedef struct _GLFWWaylandDataOffer
{
void *id;
_GLFWWaylandOfferType offer_type;
size_t idx;
bool is_self_offer;
bool is_primary;
const char *mime_for_drop;
uint32_t source_actions;
uint32_t dnd_action;
struct wl_surface *surface;
const char **mimes;
size_t mimes_capacity, mimes_count;
} _GLFWWaylandDataOffer;
// Wayland-specific global data
//
typedef struct _GLFWlibraryWayland
{
struct wl_display* display;
struct wl_registry* registry;
struct wl_compositor* compositor;
struct wl_subcompositor* subcompositor;
struct wl_shm* shm;
struct wl_seat* seat;
struct wl_pointer* pointer;
struct wl_keyboard* keyboard;
struct wl_data_device_manager* dataDeviceManager;
struct wl_data_device* dataDevice;
struct xdg_wm_base* wmBase;
struct zxdg_decoration_manager_v1* decorationManager;
struct zwp_relative_pointer_manager_v1* relativePointerManager;
struct zwp_pointer_constraints_v1* pointerConstraints;
struct zwp_idle_inhibit_manager_v1* idleInhibitManager;
struct wl_data_source* dataSourceForClipboard;
struct zwp_primary_selection_device_manager_v1* primarySelectionDeviceManager;
struct zwp_primary_selection_device_v1* primarySelectionDevice;
struct zwp_primary_selection_source_v1* dataSourceForPrimarySelection;
struct xdg_activation_v1* xdg_activation_v1;
int compositorVersion;
int seatVersion;
struct wl_surface* cursorSurface;
GLFWCursorShape cursorPreviousShape;
uint32_t serial, input_serial;
int32_t keyboardRepeatRate;
monotonic_t keyboardRepeatDelay;
struct {
uint32_t key;
id_type keyRepeatTimer;
GLFWid keyboardFocusId;
} keyRepeatInfo;
id_type cursorAnimationTimer;
_GLFWXKBData xkb;
_GLFWDBUSData dbus;
_GLFWwindow* pointerFocus;
GLFWid keyboardFocusId;
struct {
void* handle;
PFN_wl_cursor_theme_load theme_load;
PFN_wl_cursor_theme_destroy theme_destroy;
PFN_wl_cursor_theme_get_cursor theme_get_cursor;
PFN_wl_cursor_image_get_buffer image_get_buffer;
} cursor;
struct {
void* handle;
PFN_wl_egl_window_create window_create;
PFN_wl_egl_window_destroy window_destroy;
PFN_wl_egl_window_resize window_resize;
} egl;
struct {
glfw_wl_xdg_activation_request *array;
size_t capacity, sz;
} activation_requests;
EventLoopData eventLoopData;
size_t dataOffersCounter;
_GLFWWaylandDataOffer dataOffers[8];
} _GLFWlibraryWayland;
// Wayland-specific per-monitor data
//
typedef struct _GLFWmonitorWayland
{
struct wl_output* output;
uint32_t name;
int currentMode;
int x;
int y;
int scale;
} _GLFWmonitorWayland;
// Wayland-specific per-cursor data
//
typedef struct _GLFWcursorWayland
{
struct wl_cursor* cursor;
struct wl_buffer* buffer;
int width, height;
int xhot, yhot;
unsigned int currentImage;
/** The scale of the cursor, or 0 if the cursor should be loaded late, or -1 if the cursor variable itself is unused. */
int scale;
/** Cursor shape stored to allow late cursor loading in setCursorImage. */
GLFWCursorShape shape;
} _GLFWcursorWayland;
void _glfwAddOutputWayland(uint32_t name, uint32_t version);
void _glfwWaylandAfterBufferSwap(_GLFWwindow *window);
void _glfwSetupWaylandDataDevice(void);
void _glfwSetupWaylandPrimarySelectionDevice(void);
void animateCursorImage(id_type timer_id, void *data);
struct wl_cursor* _glfwLoadCursor(GLFWCursorShape, struct wl_cursor_theme*);
void destroy_data_offer(_GLFWWaylandDataOffer*);
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