fl_mouse_cursor_handler.cc File Reference

#include "flutter/shell/platform/linux/fl_mouse_cursor_handler.h"
#include <cstring>
#include "flutter/shell/platform/linux/fl_mouse_cursor_channel.h"

Go to the source code of this file.

Classes
struct	_FlMouseCursorHandler

Enumerations
enum	{   SIGNAL_CURSOR_CHANGED,   LAST_SIGNAL }

Functions
static bool	define_system_cursor (GHashTable *table, const gchar *key, const gchar *value)
static void	populate_system_cursor_table (GHashTable *table)
static void	activate_system_cursor (const gchar *kind, gpointer user_data)
static void	fl_mouse_cursor_handler_dispose (GObject *object)
static void	fl_mouse_cursor_handler_class_init (FlMouseCursorHandlerClass *klass)
static void	fl_mouse_cursor_handler_init (FlMouseCursorHandler *self)
FlMouseCursorHandler *	fl_mouse_cursor_handler_new (FlBinaryMessenger *messenger)
const gchar *	fl_mouse_cursor_handler_get_cursor_name (FlMouseCursorHandler *self)

Variables
static constexpr char	kFallbackCursor [] = "default"
static guint	fl_mouse_cursor_handler_signals [LAST_SIGNAL]
static FlMouseCursorChannelVTable	mouse_cursor_vtable

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
SIGNAL_CURSOR_CHANGED
LAST_SIGNAL

Definition at line 24 of file fl_mouse_cursor_handler.cc.

{ SIGNAL_CURSOR_CHANGED, LAST_SIGNAL };

Function Documentation

activate_system_cursor()

static void activate_system_cursor ( const gchar *  kind, gpointer  user_data  )

static

Definition at line 86 of file fl_mouse_cursor_handler.cc.

                                                                          {
  FlMouseCursorHandler* self = FL_MOUSE_CURSOR_HANDLER(user_data);
 
  if (self->system_cursor_table == nullptr) {
    self->system_cursor_table = g_hash_table_new(g_str_hash, g_str_equal);
    populate_system_cursor_table(self->system_cursor_table);
  }
 
  const gchar* cursor_name = reinterpret_cast<const gchar*>(
      g_hash_table_lookup(self->system_cursor_table, kind));
  if (cursor_name == nullptr) {
    cursor_name = kFallbackCursor;
  }
 
  g_free(self->cursor_name);
  self->cursor_name = g_strdup(cursor_name);
 
  g_signal_emit(self, fl_mouse_cursor_handler_signals[SIGNAL_CURSOR_CHANGED],
                0);
}

References fl_mouse_cursor_handler_signals, kFallbackCursor, populate_system_cursor_table(), SIGNAL_CURSOR_CHANGED, and user_data.

define_system_cursor()

static bool define_system_cursor ( GHashTable *  table, const gchar *  key, const gchar *  value  )

static

Definition at line 33 of file fl_mouse_cursor_handler.cc.

                                                     {
  return g_hash_table_insert(
      table, reinterpret_cast<gpointer>(const_cast<gchar*>(key)),
      reinterpret_cast<gpointer>(const_cast<gchar*>(value)));
}

References value.

Referenced by populate_system_cursor_table().

fl_mouse_cursor_handler_class_init()

static void fl_mouse_cursor_handler_class_init ( FlMouseCursorHandlerClass *  klass )

static

Definition at line 117 of file fl_mouse_cursor_handler.cc.

                                      {
  G_OBJECT_CLASS(klass)->dispose = fl_mouse_cursor_handler_dispose;
 
  fl_mouse_cursor_handler_signals[SIGNAL_CURSOR_CHANGED] =
      g_signal_new("cursor-changed", fl_mouse_cursor_handler_get_type(),
                   G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 0);
}

References fl_mouse_cursor_handler_dispose(), fl_mouse_cursor_handler_signals, and SIGNAL_CURSOR_CHANGED.

fl_mouse_cursor_handler_dispose()

static void fl_mouse_cursor_handler_dispose ( GObject *  object )

static

Definition at line 107 of file fl_mouse_cursor_handler.cc.

                                                             {
  FlMouseCursorHandler* self = FL_MOUSE_CURSOR_HANDLER(object);
 
  g_clear_object(&self->channel);
  g_clear_pointer(&self->system_cursor_table, g_hash_table_unref);
  g_clear_pointer(&self->cursor_name, g_free);
 
  G_OBJECT_CLASS(fl_mouse_cursor_handler_parent_class)->dispose(object);
}

Referenced by fl_mouse_cursor_handler_class_init().

fl_mouse_cursor_handler_get_cursor_name()

const gchar* fl_mouse_cursor_handler_get_cursor_name

(

FlMouseCursorHandler *

handler

)

fl_mouse_cursor_handler_get_cursor_name: @handler: an #FlMouseCursorHandler.

Get the name of the current mouse cursor.

Returns: a mouse cursor name.

Definition at line 147 of file fl_mouse_cursor_handler.cc.

                                {
  g_return_val_if_fail(FL_IS_MOUSE_CURSOR_HANDLER(self), nullptr);
  return self->cursor_name;
}

Referenced by cursor_changed_cb().

fl_mouse_cursor_handler_init()

static void fl_mouse_cursor_handler_init ( FlMouseCursorHandler *  self )

static

Definition at line 126 of file fl_mouse_cursor_handler.cc.

                                                                     {
  self->cursor_name = g_strdup("");
}

fl_mouse_cursor_handler_new()

FlMouseCursorHandler* fl_mouse_cursor_handler_new

(

FlBinaryMessenger *

messenger

)

FlMouseCursorHandler:

#FlMouseCursorHandler is a mouse_cursor channel that implements the shell side of SystemChannels.mouseCursor from the Flutter services library. fl_mouse_cursor_handler_new: @messenger: an #FlBinaryMessenger.

Creates a new handler that implements SystemChannels.mouseCursor from the Flutter services library.

Returns: a new #FlMouseCursorHandler.

Definition at line 134 of file fl_mouse_cursor_handler.cc.

                                  {
  g_return_val_if_fail(FL_IS_BINARY_MESSENGER(messenger), nullptr);
 
  FlMouseCursorHandler* self = FL_MOUSE_CURSOR_HANDLER(
      g_object_new(fl_mouse_cursor_handler_get_type(), nullptr));
 
  self->channel =
      fl_mouse_cursor_channel_new(messenger, &mouse_cursor_vtable, self);
 
  return self;
}

References fl_mouse_cursor_channel_new(), and mouse_cursor_vtable.

Referenced by fl_engine_start().

populate_system_cursor_table()

static void populate_system_cursor_table ( GHashTable *  table )

static

Definition at line 45 of file fl_mouse_cursor_handler.cc.

                                                            {
  // The following mapping must be kept in sync with Flutter framework's
  // mouse_cursor.dart.
  define_system_cursor(table, "alias", "alias");
  define_system_cursor(table, "allScroll", "all-scroll");
  define_system_cursor(table, "basic", "default");
  define_system_cursor(table, "cell", "cell");
  define_system_cursor(table, "click", "pointer");
  define_system_cursor(table, "contextMenu", "context-menu");
  define_system_cursor(table, "copy", "copy");
  define_system_cursor(table, "forbidden", "not-allowed");
  define_system_cursor(table, "grab", "grab");
  define_system_cursor(table, "grabbing", "grabbing");
  define_system_cursor(table, "help", "help");
  define_system_cursor(table, "move", "move");
  define_system_cursor(table, "none", "none");
  define_system_cursor(table, "noDrop", "no-drop");
  define_system_cursor(table, "precise", "crosshair");
  define_system_cursor(table, "progress", "progress");
  define_system_cursor(table, "text", "text");
  define_system_cursor(table, "resizeColumn", "col-resize");
  define_system_cursor(table, "resizeDown", "s-resize");
  define_system_cursor(table, "resizeDownLeft", "sw-resize");
  define_system_cursor(table, "resizeDownRight", "se-resize");
  define_system_cursor(table, "resizeLeft", "w-resize");
  define_system_cursor(table, "resizeLeftRight", "ew-resize");
  define_system_cursor(table, "resizeRight", "e-resize");
  define_system_cursor(table, "resizeRow", "row-resize");
  define_system_cursor(table, "resizeUp", "n-resize");
  define_system_cursor(table, "resizeUpDown", "ns-resize");
  define_system_cursor(table, "resizeUpLeft", "nw-resize");
  define_system_cursor(table, "resizeUpRight", "ne-resize");
  define_system_cursor(table, "resizeUpLeftDownRight", "nwse-resize");
  define_system_cursor(table, "resizeUpRightDownLeft", "nesw-resize");
  define_system_cursor(table, "verticalText", "vertical-text");
  define_system_cursor(table, "wait", "wait");
  define_system_cursor(table, "zoomIn", "zoom-in");
  define_system_cursor(table, "zoomOut", "zoom-out");
}

References define_system_cursor().

Referenced by activate_system_cursor().

Variable Documentation

fl_mouse_cursor_handler_signals

guint fl_mouse_cursor_handler_signals[LAST_SIGNAL]

static

Definition at line 26 of file fl_mouse_cursor_handler.cc.

Referenced by activate_system_cursor(), and fl_mouse_cursor_handler_class_init().

kFallbackCursor

constexpr char kFallbackCursor[] = "default"

staticconstexpr

Definition at line 11 of file fl_mouse_cursor_handler.cc.

Referenced by activate_system_cursor().

mouse_cursor_vtable

FlMouseCursorChannelVTable mouse_cursor_vtable

static

Initial value:

= {
    .activate_system_cursor = activate_system_cursor,
}

Definition at line 130 of file fl_mouse_cursor_handler.cc.

Referenced by fl_mouse_cursor_handler_new().