cef/include/capi/views/cef_window_capi.h

// Copyright (c) 2024 Marshall A. Greenblatt. All rights reserved.
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#ifndef CEF_INCLUDE_CAPI_VIEWS_CEF_WINDOW_CAPI_H_
#define CEF_INCLUDE_CAPI_VIEWS_CEF_WINDOW_CAPI_H_
#pragma once

#include "include/capi/cef_image_capi.h"
#include "include/capi/cef_menu_model_capi.h"
#include "include/capi/views/cef_display_capi.h"
#include "include/capi/views/cef_overlay_controller_capi.h"
#include "include/capi/views/cef_panel_capi.h"
#include "include/capi/views/cef_window_delegate_capi.h"

#ifdef __cplusplus
extern "C" {
#endif

struct _cef_browser_view_t;
struct _cef_view_t;

///
/// A Window is a top-level Window/widget in the Views hierarchy. By default it
/// will have a non-client area with title bar, icon and buttons that supports
/// moving and resizing. All size and position values are in density independent
/// pixels (DIP) unless otherwise indicated. Methods must be called on the
/// browser process UI thread unless otherwise indicated.
///
typedef struct _cef_window_t {
  ///
  /// Base structure.
  ///
  cef_panel_t base;

  ///
  /// Show the Window.
  ///
  void(CEF_CALLBACK* show)(struct _cef_window_t* self);

  ///
  /// Show the Window as a browser modal dialog relative to |browser_view|. A
  /// parent Window must be returned via
  /// cef_window_delegate_t::get_parent_window() and |browser_view| must belong
  /// to that parent Window. While this Window is visible, |browser_view| will
  /// be disabled while other controls in the parent Window remain enabled.
  /// Navigating or destroying the |browser_view| will close this Window
  /// automatically. Alternately, use show() and return true (1) from
  /// cef_window_delegate_t::is_window_modal_dialog() for a window modal dialog
  /// where all controls in the parent Window are disabled.
  ///
  void(CEF_CALLBACK* show_as_browser_modal_dialog)(
      struct _cef_window_t* self,
      struct _cef_browser_view_t* browser_view);

  ///
  /// Hide the Window.
  ///
  void(CEF_CALLBACK* hide)(struct _cef_window_t* self);

  ///
  /// Sizes the Window to |size| and centers it in the current display.
  ///
  void(CEF_CALLBACK* center_window)(struct _cef_window_t* self,
                                    const cef_size_t* size);

  ///
  /// Close the Window.
  ///
  void(CEF_CALLBACK* close)(struct _cef_window_t* self);

  ///
  /// Returns true (1) if the Window has been closed.
  ///
  int(CEF_CALLBACK* is_closed)(struct _cef_window_t* self);

  ///
  /// Activate the Window, assuming it already exists and is visible.
  ///
  void(CEF_CALLBACK* activate)(struct _cef_window_t* self);

  ///
  /// Deactivate the Window, making the next Window in the Z order the active
  /// Window.
  ///
  void(CEF_CALLBACK* deactivate)(struct _cef_window_t* self);

  ///
  /// Returns whether the Window is the currently active Window.
  ///
  int(CEF_CALLBACK* is_active)(struct _cef_window_t* self);

  ///
  /// Bring this Window to the top of other Windows in the Windowing system.
  ///
  void(CEF_CALLBACK* bring_to_top)(struct _cef_window_t* self);

  ///
  /// Set the Window to be on top of other Windows in the Windowing system.
  ///
  void(CEF_CALLBACK* set_always_on_top)(struct _cef_window_t* self, int on_top);

  ///
  /// Returns whether the Window has been set to be on top of other Windows in
  /// the Windowing system.
  ///
  int(CEF_CALLBACK* is_always_on_top)(struct _cef_window_t* self);

  ///
  /// Maximize the Window.
  ///
  void(CEF_CALLBACK* maximize)(struct _cef_window_t* self);

  ///
  /// Minimize the Window.
  ///
  void(CEF_CALLBACK* minimize)(struct _cef_window_t* self);

  ///
  /// Restore the Window.
  ///
  void(CEF_CALLBACK* restore)(struct _cef_window_t* self);

  ///
  /// Set fullscreen Window state. The
  /// cef_window_delegate_t::OnWindowFullscreenTransition function will be
  /// called during the fullscreen transition for notification purposes.
  ///
  void(CEF_CALLBACK* set_fullscreen)(struct _cef_window_t* self,
                                     int fullscreen);

  ///
  /// Returns true (1) if the Window is maximized.
  ///
  int(CEF_CALLBACK* is_maximized)(struct _cef_window_t* self);

  ///
  /// Returns true (1) if the Window is minimized.
  ///
  int(CEF_CALLBACK* is_minimized)(struct _cef_window_t* self);

  ///
  /// Returns true (1) if the Window is fullscreen.
  ///
  int(CEF_CALLBACK* is_fullscreen)(struct _cef_window_t* self);

  ///
  /// Returns the View that currently has focus in this Window, or nullptr if no
  /// View currently has focus. A Window may have a focused View even if it is
  /// not currently active. Any focus changes while a Window is not active may
  /// be applied after that Window next becomes active.
  ///
  struct _cef_view_t*(CEF_CALLBACK* get_focused_view)(
      struct _cef_window_t* self);

  ///
  /// Set the Window title.
  ///
  void(CEF_CALLBACK* set_title)(struct _cef_window_t* self,
                                const cef_string_t* title);

  ///
  /// Get the Window title.
  ///
  // The resulting string must be freed by calling cef_string_userfree_free().
  cef_string_userfree_t(CEF_CALLBACK* get_title)(struct _cef_window_t* self);

  ///
  /// Set the Window icon. This should be a 16x16 icon suitable for use in the
  /// Windows's title bar.
  ///
  void(CEF_CALLBACK* set_window_icon)(struct _cef_window_t* self,
                                      struct _cef_image_t* image);

  ///
  /// Get the Window icon.
  ///
  struct _cef_image_t*(CEF_CALLBACK* get_window_icon)(
      struct _cef_window_t* self);

  ///
  /// Set the Window App icon. This should be a larger icon for use in the host
  /// environment app switching UI. On Windows, this is the ICON_BIG used in
  /// Alt-Tab list and Windows taskbar. The Window icon will be used by default
  /// if no Window App icon is specified.
  ///
  void(CEF_CALLBACK* set_window_app_icon)(struct _cef_window_t* self,
                                          struct _cef_image_t* image);

  ///
  /// Get the Window App icon.
  ///
  struct _cef_image_t*(CEF_CALLBACK* get_window_app_icon)(
      struct _cef_window_t* self);

  ///
  /// Add a View that will be overlayed on the Window contents with absolute
  /// positioning and high z-order. Positioning is controlled by |docking_mode|
  /// as described below. Setting |can_activate| to true (1) will allow the
  /// overlay view to receive input focus. The returned cef_overlay_controller_t
  /// object is used to control the overlay. Overlays are hidden by default.
  ///
  /// With CEF_DOCKING_MODE_CUSTOM:
  ///   1. The overlay is initially hidden, sized to |view|'s preferred size,
  ///      and positioned in the top-left corner.
  ///   2. Optionally change the overlay position and/or size by calling
  ///      CefOverlayController methods.
  ///   3. Call CefOverlayController::SetVisible(true) to show the overlay.
  ///   4. The overlay will be automatically re-sized if |view|'s layout
  ///      changes. Optionally change the overlay position and/or size when
  ///      OnLayoutChanged is called on the Window's delegate to indicate a
  ///      change in Window bounds.
  ///
  /// With other docking modes:
  ///   1. The overlay is initially hidden, sized to |view|'s preferred size,
  ///      and positioned based on |docking_mode|.
  ///   2. Call CefOverlayController::SetVisible(true) to show the overlay.
  ///   3. The overlay will be automatically re-sized if |view|'s layout changes
  ///      and re-positioned as appropriate when the Window resizes.
  ///
  /// Overlays created by this function will receive a higher z-order then any
  /// child Views added previously. It is therefore recommended to call this
  /// function last after all other child Views have been added so that the
  /// overlay displays as the top-most child of the Window.
  ///
  struct _cef_overlay_controller_t*(CEF_CALLBACK* add_overlay_view)(
      struct _cef_window_t* self,
      struct _cef_view_t* view,
      cef_docking_mode_t docking_mode,
      int can_activate);

  ///
  /// Show a menu with contents |menu_model|. |screen_point| specifies the menu
  /// position in screen coordinates. |anchor_position| specifies how the menu
  /// will be anchored relative to |screen_point|.
  ///
  void(CEF_CALLBACK* show_menu)(struct _cef_window_t* self,
                                struct _cef_menu_model_t* menu_model,
                                const cef_point_t* screen_point,
                                cef_menu_anchor_position_t anchor_position);

  ///
  /// Cancel the menu that is currently showing, if any.
  ///
  void(CEF_CALLBACK* cancel_menu)(struct _cef_window_t* self);

  ///
  /// Returns the Display that most closely intersects the bounds of this
  /// Window. May return NULL if this Window is not currently displayed.
  ///
  struct _cef_display_t*(CEF_CALLBACK* get_display)(struct _cef_window_t* self);

  ///
  /// Returns the bounds (size and position) of this Window's client area.
  /// Position is in screen coordinates.
  ///
  cef_rect_t(CEF_CALLBACK* get_client_area_bounds_in_screen)(
      struct _cef_window_t* self);

  ///
  /// Set the regions where mouse events will be intercepted by this Window to
  /// support drag operations. Call this function with an NULL vector to clear
  /// the draggable regions. The draggable region bounds should be in window
  /// coordinates.
  ///
  void(CEF_CALLBACK* set_draggable_regions)(
      struct _cef_window_t* self,
      size_t regionsCount,
      cef_draggable_region_t const* regions);

  ///
  /// Retrieve the platform window handle for this Window.
  ///
  cef_window_handle_t(CEF_CALLBACK* get_window_handle)(
      struct _cef_window_t* self);

  ///
  /// Simulate a key press. |key_code| is the VKEY_* value from Chromium's
  /// ui/events/keycodes/keyboard_codes.h header (VK_* values on Windows).
  /// |event_flags| is some combination of EVENTFLAG_SHIFT_DOWN,
  /// EVENTFLAG_CONTROL_DOWN and/or EVENTFLAG_ALT_DOWN. This function is exposed
  /// primarily for testing purposes.
  ///
  void(CEF_CALLBACK* send_key_press)(struct _cef_window_t* self,
                                     int key_code,
                                     uint32_t event_flags);

  ///
  /// Simulate a mouse move. The mouse cursor will be moved to the specified
  /// (screen_x, screen_y) position. This function is exposed primarily for
  /// testing purposes.
  ///
  void(CEF_CALLBACK* send_mouse_move)(struct _cef_window_t* self,
                                      int screen_x,
                                      int screen_y);

  ///
  /// Simulate mouse down and/or mouse up events. |button| is the mouse button
  /// type. If |mouse_down| is true (1) a mouse down event will be sent. If
  /// |mouse_up| is true (1) a mouse up event will be sent. If both are true (1)
  /// a mouse down event will be sent followed by a mouse up event (equivalent
  /// to clicking the mouse button). The events will be sent using the current
  /// cursor position so make sure to call send_mouse_move() first to position
  /// the mouse. This function is exposed primarily for testing purposes.
  ///
  void(CEF_CALLBACK* send_mouse_events)(struct _cef_window_t* self,
                                        cef_mouse_button_type_t button,
                                        int mouse_down,
                                        int mouse_up);

  ///
  /// Set the keyboard accelerator for the specified |command_id|. |key_code|
  /// can be any virtual key or character value. Required modifier keys are
  /// specified by |shift_pressed|, |ctrl_pressed| and/or |alt_pressed|.
  /// cef_window_delegate_t::OnAccelerator will be called if the keyboard
  /// combination is triggered while this window has focus.
  ///
  /// The |high_priority| value will be considered if a child cef_browser_view_t
  /// has focus when the keyboard combination is triggered. If |high_priority|
  /// is true (1) then the key event will not be forwarded to the web content
  /// (`keydown` event handler) or cef_keyboard_handler_t first. If
  /// |high_priority| is false (0) then the behavior will depend on the
  /// cef_browser_view_t::SetPreferAccelerators configuration.
  ///
  void(CEF_CALLBACK* set_accelerator)(struct _cef_window_t* self,
                                      int command_id,
                                      int key_code,
                                      int shift_pressed,
                                      int ctrl_pressed,
                                      int alt_pressed,
                                      int high_priority);

  ///
  /// Remove the keyboard accelerator for the specified |command_id|.
  ///
  void(CEF_CALLBACK* remove_accelerator)(struct _cef_window_t* self,
                                         int command_id);

  ///
  /// Remove all keyboard accelerators.
  ///
  void(CEF_CALLBACK* remove_all_accelerators)(struct _cef_window_t* self);

  ///
  /// Override a standard theme color or add a custom color associated with
  /// |color_id|. See cef_color_ids.h for standard ID values. Recommended usage
  /// is as follows:
  ///
  /// 1. Customize the default native/OS theme by calling SetThemeColor before
  ///    showing the first Window. When done setting colors call
  ///    CefWindow::ThemeChanged to trigger CefViewDelegate::OnThemeChanged
  ///    notifications.
  /// 2. Customize the current native/OS or Chrome theme after it changes by
  ///    calling SetThemeColor from the CefWindowDelegate::OnThemeColorsChanged
  ///    callback. CefViewDelegate::OnThemeChanged notifications will then be
  ///    triggered automatically.
  ///
  /// The configured color will be available immediately via
  /// cef_view_t::GetThemeColor and will be applied to each View in this
  /// Window's component hierarchy when cef_view_delegate_t::OnThemeChanged is
  /// called. See OnThemeColorsChanged documentation for additional details.
  ///
  /// Clients wishing to add custom colors should use |color_id| values >=
  /// CEF_ChromeColorsEnd.
  ///
  void(CEF_CALLBACK* set_theme_color)(struct _cef_window_t* self,
                                      int color_id,
                                      cef_color_t color);

  ///
  /// Trigger cef_view_delegate_t::OnThemeChanged callbacks for each View in
  /// this Window's component hierarchy. Unlike a native/OS or Chrome theme
  /// change this function does not reset theme colors to standard values and
  /// does not result in a call to cef_window_delegate_t::OnThemeColorsChanged.
  ///
  /// Do not call this function from cef_window_delegate_t::OnThemeColorsChanged
  /// or cef_view_delegate_t::OnThemeChanged.
  ///
  void(CEF_CALLBACK* theme_changed)(struct _cef_window_t* self);

  ///
  /// Returns the runtime style for this Window (ALLOY or CHROME). See
  /// cef_runtime_style_t documentation for details.
  ///
  cef_runtime_style_t(CEF_CALLBACK* get_runtime_style)(
      struct _cef_window_t* self);
} cef_window_t;

///
/// Create a new Window.
///
CEF_EXPORT cef_window_t* cef_window_create_top_level(
    struct _cef_window_delegate_t* delegate);

#ifdef __cplusplus
}
#endif

#endif  // CEF_INCLUDE_CAPI_VIEWS_CEF_WINDOW_CAPI_H_