MouseEvent.cpp 5.6 KB

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  1. /*
  2. * Copyright (c) 2020, the SerenityOS developers.
  3. * Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
  4. *
  5. * SPDX-License-Identifier: BSD-2-Clause
  6. */
  7. #include <Kernel/API/KeyCode.h>
  8. #include <LibWeb/Bindings/Intrinsics.h>
  9. #include <LibWeb/Bindings/MouseEventPrototype.h>
  10. #include <LibWeb/HTML/EventNames.h>
  11. #include <LibWeb/UIEvents/EventNames.h>
  12. #include <LibWeb/UIEvents/MouseButton.h>
  13. #include <LibWeb/UIEvents/MouseEvent.h>
  14. namespace Web::UIEvents {
  15. JS_DEFINE_ALLOCATOR(MouseEvent);
  16. MouseEvent::MouseEvent(JS::Realm& realm, FlyString const& event_name, MouseEventInit const& event_init, double page_x, double page_y, double offset_x, double offset_y)
  17. : UIEvent(realm, event_name, event_init)
  18. , m_screen_x(event_init.screen_x)
  19. , m_screen_y(event_init.screen_y)
  20. , m_page_x(page_x)
  21. , m_page_y(page_y)
  22. , m_client_x(event_init.client_x)
  23. , m_client_y(event_init.client_y)
  24. , m_offset_x(offset_x)
  25. , m_offset_y(offset_y)
  26. , m_ctrl_key(event_init.ctrl_key)
  27. , m_shift_key(event_init.shift_key)
  28. , m_alt_key(event_init.alt_key)
  29. , m_meta_key(event_init.meta_key)
  30. , m_modifier_alt_graph(event_init.modifier_alt_graph)
  31. , m_modifier_caps_lock(event_init.modifier_caps_lock)
  32. , m_modifier_fn(event_init.modifier_fn)
  33. , m_modifier_fn_lock(event_init.modifier_fn_lock)
  34. , m_modifier_hyper(event_init.modifier_hyper)
  35. , m_modifier_num_lock(event_init.modifier_num_lock)
  36. , m_modifier_scroll_lock(event_init.modifier_scroll_lock)
  37. , m_modifier_super(event_init.modifier_super)
  38. , m_modifier_symbol(event_init.modifier_symbol)
  39. , m_modifier_symbol_lock(event_init.modifier_symbol_lock)
  40. , m_movement_x(event_init.movement_x)
  41. , m_movement_y(event_init.movement_y)
  42. , m_button(event_init.button)
  43. , m_buttons(event_init.buttons)
  44. , m_related_target(event_init.related_target)
  45. {
  46. set_event_characteristics();
  47. }
  48. MouseEvent::~MouseEvent() = default;
  49. void MouseEvent::initialize(JS::Realm& realm)
  50. {
  51. Base::initialize(realm);
  52. WEB_SET_PROTOTYPE_FOR_INTERFACE(MouseEvent);
  53. }
  54. void MouseEvent::visit_edges(Cell::Visitor& visitor)
  55. {
  56. Base::visit_edges(visitor);
  57. visitor.visit(m_related_target);
  58. }
  59. bool MouseEvent::get_modifier_state(String const& key_arg) const
  60. {
  61. if (key_arg == "Control")
  62. return m_ctrl_key;
  63. if (key_arg == "Shift")
  64. return m_shift_key;
  65. if (key_arg == "Alt")
  66. return m_alt_key;
  67. if (key_arg == "Meta")
  68. return m_meta_key;
  69. if (key_arg == "AltGraph")
  70. return m_modifier_alt_graph;
  71. if (key_arg == "CapsLock")
  72. return m_modifier_caps_lock;
  73. if (key_arg == "Fn")
  74. return m_modifier_fn;
  75. if (key_arg == "FnLock")
  76. return m_modifier_fn_lock;
  77. if (key_arg == "Hyper")
  78. return m_modifier_hyper;
  79. if (key_arg == "NumLock")
  80. return m_modifier_num_lock;
  81. if (key_arg == "ScrollLock")
  82. return m_modifier_scroll_lock;
  83. if (key_arg == "Super")
  84. return m_modifier_super;
  85. if (key_arg == "Symbol")
  86. return m_modifier_symbol;
  87. if (key_arg == "SymbolLock")
  88. return m_modifier_symbol_lock;
  89. return false;
  90. }
  91. // https://www.w3.org/TR/uievents/#dom-mouseevent-button
  92. static i16 determine_button(unsigned mouse_button)
  93. {
  94. switch (mouse_button) {
  95. case MouseButton::Primary:
  96. return 0;
  97. case MouseButton::Middle:
  98. return 1;
  99. case MouseButton::Secondary:
  100. return 2;
  101. case MouseButton::Backward:
  102. return 3;
  103. case MouseButton::Forward:
  104. return 4;
  105. default:
  106. VERIFY_NOT_REACHED();
  107. }
  108. }
  109. JS::NonnullGCPtr<MouseEvent> MouseEvent::create(JS::Realm& realm, FlyString const& event_name, MouseEventInit const& event_init, double page_x, double page_y, double offset_x, double offset_y)
  110. {
  111. return realm.heap().allocate<MouseEvent>(realm, realm, event_name, event_init, page_x, page_y, offset_x, offset_y);
  112. }
  113. WebIDL::ExceptionOr<JS::NonnullGCPtr<MouseEvent>> MouseEvent::construct_impl(JS::Realm& realm, FlyString const& event_name, MouseEventInit const& event_init)
  114. {
  115. return create(realm, event_name, event_init);
  116. }
  117. WebIDL::ExceptionOr<JS::NonnullGCPtr<MouseEvent>> MouseEvent::create_from_platform_event(JS::Realm& realm, FlyString const& event_name, CSSPixelPoint screen, CSSPixelPoint page, CSSPixelPoint client, CSSPixelPoint offset, Optional<CSSPixelPoint> movement, unsigned button, unsigned buttons, unsigned modifiers)
  118. {
  119. MouseEventInit event_init {};
  120. event_init.ctrl_key = modifiers & Mod_Ctrl;
  121. event_init.shift_key = modifiers & Mod_Shift;
  122. event_init.alt_key = modifiers & Mod_Alt;
  123. event_init.meta_key = modifiers & Mod_Super;
  124. event_init.screen_x = screen.x().to_double();
  125. event_init.screen_y = screen.y().to_double();
  126. event_init.client_x = client.x().to_double();
  127. event_init.client_y = client.y().to_double();
  128. if (movement.has_value()) {
  129. event_init.movement_x = movement.value().x().to_double();
  130. event_init.movement_y = movement.value().y().to_double();
  131. }
  132. event_init.button = determine_button(button);
  133. event_init.buttons = buttons;
  134. auto event = MouseEvent::create(realm, event_name, event_init, page.x().to_double(), page.y().to_double(), offset.x().to_double(), offset.y().to_double());
  135. event->set_is_trusted(true);
  136. return event;
  137. }
  138. void MouseEvent::set_event_characteristics()
  139. {
  140. if (type().is_one_of(EventNames::mousedown, EventNames::mousemove, EventNames::mouseout, EventNames::mouseover, EventNames::mouseup, HTML::EventNames::click, EventNames::dblclick, EventNames::contextmenu)) {
  141. set_bubbles(true);
  142. set_cancelable(true);
  143. set_composed(true);
  144. }
  145. }
  146. }