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use crate::enums::{ Align, CallbackTrigger, Color, ColorDepth, Cursor, Damage, Event, Font, FrameType, LabelType, Shortcut, }; use std::convert::From; use std::{fmt, io}; /// Error types returned by fltk-rs + wrappers of std errors #[derive(Debug)] pub enum FltkError { /// i/o error IoError(io::Error), /// Null string conversion error NullError(std::ffi::NulError), /// Internal fltk error Internal(FltkErrorKind), /// Error using an errorneous env variable EnvVarError(std::env::VarError), /// Unknown error Unknown(String), } unsafe impl Send for FltkError {} unsafe impl Sync for FltkError {} /// Error kinds enum for `FltkError` #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] pub enum FltkErrorKind { /// Failed to run the application FailedToRun, /// Failed to initialize the multithreading FailedToLock, /// Failed to set the general scheme of the application FailedToSetScheme, /// Failed operation, mostly unknown reason! FailedOperation, /// System resource (file, image) not found ResourceNotFound, /// Image format error when opening an image of an unsopported format ImageFormatError, /// Error filling table TableError, /// Error due to printing PrintError, } impl std::error::Error for FltkError { fn source(&self) -> Option<&(dyn std::error::Error + 'static)> { match self { FltkError::IoError(err) => Some(err), FltkError::NullError(err) => Some(err), _ => None, } } } impl fmt::Display for FltkError { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { match *self { FltkError::IoError(ref err) => err.fmt(f), FltkError::NullError(ref err) => err.fmt(f), FltkError::Internal(ref err) => write!(f, "An internal error occured {:?}", err), FltkError::EnvVarError(ref err) => write!(f, "An env var error occured {:?}", err), FltkError::Unknown(ref err) => write!(f, "An unknown error occurred {:?}", err), } } } impl From<io::Error> for FltkError { fn from(err: io::Error) -> FltkError { FltkError::IoError(err) } } impl From<std::ffi::NulError> for FltkError { fn from(err: std::ffi::NulError) -> FltkError { FltkError::NullError(err) } } impl From<std::env::VarError> for FltkError { fn from(err: std::env::VarError) -> FltkError { FltkError::EnvVarError(err) } } /// A trait defined for all enums passable to the `WidgetExt::set_type()` method pub trait WidgetType { /// Get the integral representation of the widget type fn to_i32(self) -> i32; /// Get the widget type from its integral representation fn from_i32(val: i32) -> Self; } /// Defines the methods implemented by all widgets pub unsafe trait WidgetExt { /// Set to position x, y fn set_pos(&mut self, x: i32, y: i32); /// Set to dimensions width and height fn set_size(&mut self, width: i32, height: i32); /// Sets the widget's label. /// labels support special symbols preceded by an `@` [sign](https://www.fltk.org/doc-1.3/symbols.png). /// and for the [associated formatting](https://www.fltk.org/doc-1.3/common.html). fn set_label(&mut self, title: &str); /// Redraws a widget, necessary for resizing and changing positions fn redraw(&mut self); /// Shows the widget fn show(&mut self); /// Hides the widget fn hide(&mut self); /// Returns the x coordinate of the widget fn x(&self) -> i32; /// Returns the y coordinate of the widget fn y(&self) -> i32; /// Returns the width of the widget fn width(&self) -> i32; /// Returns the height of the widget fn height(&self) -> i32; /// Returns the width of the widget fn w(&self) -> i32; /// Returns the height of the widget fn h(&self) -> i32; /// Returns the label of the widget fn label(&self) -> String; /// Measures the label's width and height fn measure_label(&self) -> (i32, i32); /// transforms a widget to a base `Fl_Widget`, for internal use /// # Safety /// Can return multiple mutable pointers to the same widget unsafe fn as_widget_ptr(&self) -> *mut fltk_sys::widget::Fl_Widget; /// Initialize to position x, y, (should only be called on initialization) fn with_pos(self, x: i32, y: i32) -> Self where Self: Sized; /// Initialilze to dimensions width and height, (should only be called on initialization) fn with_size(self, width: i32, height: i32) -> Self where Self: Sized; /// Initialize with label/title, (should only be called on initialization) fn with_label(self, title: &str) -> Self where Self: Sized; /// Sets the initial alignment of the widget, (should only be called on initialization) fn with_align(self, align: Align) -> Self where Self: Sized; /// Positions the widget below w, the size of w should be known fn below_of<W: WidgetExt>(self, w: &W, padding: i32) -> Self where Self: Sized; /// Positions the widget above w, the size of w should be known fn above_of<W: WidgetExt>(self, w: &W, padding: i32) -> Self where Self: Sized; /// Positions the widget to the right of w, the size of w should be known fn right_of<W: WidgetExt>(self, w: &W, padding: i32) -> Self where Self: Sized; /// Positions the widget to the left of w, the size of w should be known fn left_of<W: WidgetExt>(self, w: &W, padding: i32) -> Self where Self: Sized; /// Positions the widget to the center of w, the size of w should be known fn center_of<W: WidgetExt>(self, w: &W) -> Self where Self: Sized; /// Positions the widget to the center of its parent fn center_of_parent(self) -> Self where Self: Sized; /// Takes the size of w, the size of w should be known fn size_of<W: WidgetExt>(self, w: &W) -> Self where Self: Sized; /// Takes the size of the parent group or window fn size_of_parent(self) -> Self where Self: Sized; /// Checks whether the self widget is inside another widget fn inside<W: WidgetExt>(&self, wid: &W) -> bool where Self: Sized; /// Returns the widget type when applicable fn get_type<T: WidgetType>(&self) -> T where Self: Sized; /// Sets the widget type fn set_type<T: WidgetType>(&mut self, typ: T) where Self: Sized; /// Sets the image of the widget fn set_image<I: ImageExt>(&mut self, image: Option<I>) where Self: Sized; /// Gets the image associated with the widget fn image(&self) -> Option<Box<dyn ImageExt>> where Self: Sized; /// Sets the image of the widget fn set_deimage<I: ImageExt>(&mut self, image: Option<I>) where Self: Sized; /// Gets the image associated with the widget fn deimage(&self) -> Option<Box<dyn ImageExt>> where Self: Sized; /// Sets the callback when the widget is triggered (clicks for example) /// takes the widget as a closure argument fn set_callback<F: FnMut(&mut Self) + 'static>(&mut self, cb: F) where Self: Sized; /// Emits a message on callback using a sender fn emit<T: 'static + Clone + Send + Sync>(&mut self, sender: crate::app::Sender<T>, msg: T) where Self: Sized; /// Activates the widget fn activate(&mut self); /// Deactivates the widget fn deactivate(&mut self); /// Redraws the label of the widget fn redraw_label(&mut self); /// Resizes and/or moves the widget, takes x, y, width and height fn resize(&mut self, x: i32, y: i32, width: i32, height: i32); /// Returns the tooltip text fn tooltip(&self) -> Option<String>; /// Sets the tooltip text fn set_tooltip(&mut self, txt: &str); /// Returns the widget color fn color(&self) -> Color; /// Sets the widget's color fn set_color(&mut self, color: Color); /// Returns the widget label's color fn label_color(&self) -> Color; /// Sets the widget label's color fn set_label_color(&mut self, color: Color); /// Returns the widget label's font fn label_font(&self) -> Font; /// Sets the widget label's font fn set_label_font(&mut self, font: Font); /// Returns the widget label's size fn label_size(&self) -> i32; /// Sets the widget label's size fn set_label_size(&mut self, sz: i32); /// Returns the widget label's type fn label_type(&self) -> LabelType; /// Sets the widget label's type fn set_label_type(&mut self, typ: LabelType); /// Returns the widget's frame type fn frame(&self) -> FrameType; /// Sets the widget's frame type fn set_frame(&mut self, typ: FrameType); /// Returns whether the widget was changed fn changed(&self) -> bool; /// Mark the widget as changed fn set_changed(&mut self); /// Clears the changed status of the widget fn clear_changed(&mut self); /// Returns the alignment of the widget fn align(&self) -> Align; /// Sets the alignment of the widget fn set_align(&mut self, align: Align); /// Returns the parent of the widget fn parent(&self) -> Option<Box<dyn GroupExt>>; /// Gets the selection color of the widget fn selection_color(&mut self) -> Color; /// Sets the selection color of the widget fn set_selection_color(&mut self, color: Color); /// Runs the already registered callback fn do_callback(&mut self); /// Returns the direct window holding the widget fn window(&self) -> Option<Box<dyn WindowExt>>; /// Returns the topmost window holding the widget fn top_window(&self) -> Option<Box<dyn WindowExt>>; /// Checks whether a widget is capable of taking events fn takes_events(&self) -> bool; /// Make the widget take focus /// # Errors /// Errors on failure to take focus fn take_focus(&mut self) -> Result<(), FltkError>; /// Set the widget to have visible focus fn set_visible_focus(&mut self); /// Clear visible focus fn clear_visible_focus(&mut self); /// Set the visible focus using a flag fn visible_focus(&mut self, v: bool); /// Return whether the widget has visible focus fn has_visible_focus(&mut self) -> bool; /// Check if a widget was deleted fn was_deleted(&self) -> bool; /// Return whether the widget was damaged fn damage(&self) -> bool; /// Signal the widget as damaged and it should be redrawn in the next event loop cycle fn set_damage(&mut self, flag: bool); /// Return the damage mask fn damage_type(&self) -> Damage; /// Signal the type of damage a widget received fn set_damage_type(&mut self, mask: Damage); /// Clear the damaged flag fn clear_damage(&mut self); /// Sets the default callback trigger for a widget fn set_trigger(&mut self, trigger: CallbackTrigger); /// Return the callback trigger fn trigger(&self) -> CallbackTrigger; /// Return the widget as a window if it's a window fn as_window(&self) -> Option<Box<dyn WindowExt>>; /// Return the widget as a group widget if it's a group widget fn as_group(&self) -> Option<Box<dyn GroupExt>>; /// INTERNAL: Retakes ownership of the user callback data /// # Safety /// Can return multiple mutable references to the `user_data` unsafe fn user_data(&self) -> Option<Box<dyn FnMut()>>; /// Upcast a `WidgetExt` to a Widget /// # Safety /// Allows for potentially unsafe casts between incompatible widget types unsafe fn into_widget<W: WidgetBase>(&self) -> W where Self: Sized; /// Returns whether a widget is visible fn visible(&self) -> bool; /// Returns whether a widget or any of its parents are visible (recursively) fn visible_r(&self) -> bool; } /// Defines the extended methods implemented by all widgets pub unsafe trait WidgetBase: WidgetExt { /// Creates a new widget, takes an x, y coordinates, as well as a width and height, plus a title /// # Arguments /// * `x` - The x coordinate in the screen /// * `y` - The y coordinate in the screen /// * `width` - The width of the widget /// * `heigth` - The height of the widget /// * `title` - The title or label of the widget /// The title is expected to be a static str or None. /// To use dynamic strings use `with_label(self, &str)` or `set_label(&mut self, &str)` /// labels support special symbols preceded by an `@` [sign](https://www.fltk.org/doc-1.3/symbols.png). /// and for the [associated formatting](https://www.fltk.org/doc-1.3/common.html). fn new<T: Into<Option<&'static str>>>( x: i32, y: i32, width: i32, height: i32, title: T, ) -> Self; /// Deletes widgets and their children. fn delete(wid: Self) where Self: Sized; /// transforms a widget pointer to a Widget, for internal use /// # Safety /// The pointer must be valid unsafe fn from_widget_ptr(ptr: *mut fltk_sys::widget::Fl_Widget) -> Self; /// Get a widget from base widget /// # Safety /// The underlying object must be valid unsafe fn from_widget<W: WidgetExt>(w: W) -> Self; /// Set a custom handler, where events are managed manually, akin to `Fl_Widget::handle(int)`. /// Handled or ignored events should return true, unhandled events should return false. /// takes the widget as a closure argument fn handle<F: FnMut(&mut Self, Event) -> bool + 'static>(&mut self, cb: F); /// Set a custom draw method. /// takes the widget as a closure argument. /// macOS requires that `WidgetBase::draw` actually calls drawing functions fn draw<F: FnMut(&mut Self) + 'static>(&mut self, cb: F); /// INTERNAL: Retrieve the draw data /// # Safety /// Can return multiple mutable references to the `draw_data` unsafe fn draw_data(&mut self) -> Option<Box<dyn FnMut()>>; /// INTERNAL: Retrieve the handle data /// # Safety /// Can return multiple mutable references to the `handle_data` unsafe fn handle_data(&mut self) -> Option<Box<dyn FnMut(Event) -> bool>>; } /// Defines the methods implemented by all button widgets pub unsafe trait ButtonExt: WidgetExt { /// Gets the shortcut associated with a button fn shortcut(&self) -> Shortcut; /// Sets the shortcut associated with a button fn set_shortcut(&mut self, shortcut: Shortcut); /// Clears the value of the button. /// Useful for round, radio, light, toggle and check buttons fn clear(&mut self); /// Returns whether a button is set or not. /// Useful for round, radio, light, toggle and check buttons fn is_set(&self) -> bool; /// Sets whether a button is set or not. /// Useful for round, radio, light, toggle and check buttons fn set(&mut self, flag: bool); /// Returns whether a button is set or not. /// Useful for round, radio, light, toggle and check buttons fn value(&self) -> bool; /// Sets whether a button is set or not. /// Useful for round, radio, light, toggle and check buttons fn set_value(&mut self, flag: bool); /// Set the `down_box` of the widget fn set_down_frame(&mut self, f: FrameType); /// Get the down frame type of the widget fn down_frame(&self) -> FrameType; } /// Defines the methods implemented by all group widgets pub unsafe trait GroupExt: WidgetExt { /// Begins a group, used for widgets implementing the group trait fn begin(&self); /// Ends a group, used for widgets implementing the group trait fn end(&self); /// Clear a group from all widgets fn clear(&mut self); /// Clear a group from all widgets using FLTK's clear call. /// # Safety /// Ignores widget tracking unsafe fn unsafe_clear(&mut self); /// Return the number of children in a group fn children(&self) -> i32; /// Return child widget by index fn child(&self, idx: i32) -> Option<Box<dyn WidgetExt>>; /// Find a widget within a group and return its index fn find<W: WidgetExt>(&self, widget: &W) -> i32 where Self: Sized; /// Add a widget to a group fn add<W: WidgetExt>(&mut self, widget: &W) where Self: Sized; /// Insert a widget to a group at a certain index fn insert<W: WidgetExt>(&mut self, widget: &W, index: i32) where Self: Sized; /// Remove a widget from a group, but does not delete it fn remove<W: WidgetExt>(&mut self, widget: &W) where Self: Sized; /// Remove a child widget by its index fn remove_by_index(&mut self, idx: i32); /// Make the passed widget resizable fn resizable<W: WidgetExt>(&self, widget: &W) where Self: Sized; /// Make the window resizable, should be called before `show` fn make_resizable(&mut self, val: bool); /// Clips children outside the group boundaries fn set_clip_children(&mut self, flag: bool); /// Get whether `clip_children` is set fn clip_children(&mut self) -> bool; /// Draw a child widget, the call should be in a `WidgetBase::draw` method fn draw_child<W: WidgetExt>(&self, w: &mut W) where Self: Sized; /// Update a child widget, the call should be in a `WidgetBase::draw` method fn update_child<W: WidgetExt>(&self, w: &mut W) where Self: Sized; /// Draw the outside label, the call should be in a `WidgetBase::draw` method fn draw_outside_label<W: WidgetExt>(&self, w: &mut W) where Self: Sized; /// Draw children, the call should be in a `WidgetBase::draw` method fn draw_children(&mut self); } /// Defines the methods implemented by all window widgets pub unsafe trait WindowExt: GroupExt { /// Positions the window to the center of the screen fn center_screen(self) -> Self where Self: Sized; /// Makes a window modal, should be called before `show` fn make_modal(&mut self, val: bool); /// Makes a window fullscreen fn fullscreen(&mut self, val: bool); /// Makes the window current fn make_current(&mut self); /// Returns the icon of the window fn icon(&self) -> Option<Box<dyn ImageExt>>; /// Sets the windows icon. /// Supported formats are bmp, jpeg, png and rgb. fn set_icon<T: ImageExt>(&mut self, image: Option<T>) where Self: Sized; /// Sets the cursor style within the window. /// Needs to be called after the window is shown fn set_cursor(&mut self, cursor: Cursor); /// Returns whether a window is shown fn shown(&self) -> bool; /// Sets whether the window has a border fn set_border(&mut self, flag: bool); /// Returns whether a window has a border fn border(&self) -> bool; /// Frees the position of the window fn free_position(&mut self); /// Get the raw system handle of the window fn raw_handle(&self) -> crate::window::RawHandle; /// Set the window associated with a raw handle. /// `RawHandle` is a void pointer to: (Windows: `HWND`, X11: `Xid` (`u64`), macOS: `NSWindow`) /// # Safety /// The data must be valid and is OS-dependent. The window must be shown. unsafe fn set_raw_handle(&mut self, handle: crate::window::RawHandle); /// Get the graphical draw region of the window fn region(&self) -> crate::draw::Region; /// Set the graphical draw region of the window /// # Safety /// The data must be valid. unsafe fn set_region(&mut self, region: crate::draw::Region); /// Iconifies the window. /// You can tell that the window is iconized by checking that it's shown and not visible fn iconize(&mut self); /// Returns whether the window is fullscreen or not fn fullscreen_active(&self) -> bool; /// Returns the decorated width fn decorated_w(&self) -> i32; /// Returns the decorated height fn decorated_h(&self) -> i32; /// Set the window's minimum width, minimum height, max width and max height fn size_range(&mut self, min_w: i32, min_h: i32, max_w: i32, max_h: i32); /// Set the hotspot widget of the window fn hotspot<W: WidgetExt>(&mut self, w: &W) where Self: Sized; /// Set the shape of the window. /// Supported image formats are BMP, RGB and Pixmap. /// The window covers non-transparent/non-black shape of the image. /// The image must not be scaled(resized) beforehand. /// The size will be adapted to the window's size fn set_shape<I: ImageExt>(&mut self, image: Option<I>) where Self: Sized; /// Get the shape of the window fn shape(&self) -> Option<Box<dyn ImageExt>>; /// Get the window's x coord from the screen fn x_root(&self) -> i32; /// Get the window's y coord from the screen fn y_root(&self) -> i32; /// Set the cursor image fn set_cursor_image(&mut self, image: crate::image::RgbImage, hot_x: i32, hot_y: i32); /// Set the window's default cursor fn default_cursor(&mut self, cursor: Cursor); /// Get the screen number fn screen_num(&self) -> i32; /// Set the screen number fn set_screen_num(&mut self, n: i32); } /// Defines the methods implemented by all input and output widgets pub unsafe trait InputExt: WidgetExt { /// Returns the value inside the input/output widget fn value(&self) -> String; /// Sets the value inside an input/output widget fn set_value(&self, val: &str); /// Returns the maximum size (in bytes) accepted by an input/output widget fn maximum_size(&self) -> i32; /// Sets the maximum size (in bytes) accepted by an input/output widget fn set_maximum_size(&mut self, val: i32); /// Returns the index position inside an input/output widget fn position(&self) -> i32; /// Sets the index postion inside an input/output widget /// # Errors /// Errors on failure to set the cursor position in the text fn set_position(&mut self, val: i32) -> Result<(), FltkError>; /// Returns the index mark inside an input/output widget fn mark(&self) -> i32; /// Sets the index mark inside an input/output widget /// # Errors /// Errors on failure to set the mark fn set_mark(&mut self, val: i32) -> Result<(), FltkError>; /// Replace content with a &str /// # Errors /// Errors on failure to replace text fn replace(&mut self, beg: i32, end: i32, val: &str) -> Result<(), FltkError>; /// Insert a &str /// # Errors /// Errors on failure to insert text fn insert(&mut self, txt: &str) -> Result<(), FltkError>; /// Append a &str /// # Errors /// Errors on failure to append text fn append(&mut self, txt: &str) -> Result<(), FltkError>; /// Copy the value within the widget /// # Errors /// Errors on failure to copy selection fn copy(&mut self) -> Result<(), FltkError>; /// Undo changes /// # Errors /// Errors on failure to undo fn undo(&mut self) -> Result<(), FltkError>; /// Cut the value within the widget /// # Errors /// Errors on failure to cut selection fn cut(&mut self) -> Result<(), FltkError>; /// Return the text font fn text_font(&self) -> Font; /// Sets the text font fn set_text_font(&mut self, font: Font); /// Return the text color fn text_color(&self) -> Color; /// Sets the text color fn set_text_color(&mut self, color: Color); /// Return the text size fn text_size(&self) -> i32; /// Sets the text size fn set_text_size(&mut self, sz: i32); /// Returns whether the input/output widget is readonly fn readonly(&self) -> bool; /// Set readonly status of the input/output widget fn set_readonly(&mut self, val: bool); /// Return whether text is wrapped inside an input/output widget fn wrap(&self) -> bool; /// Set whether text is wrapped inside an input/output widget fn set_wrap(&mut self, val: bool); } /// Defines the methods implemented by all menu widgets pub unsafe trait MenuExt: WidgetExt { /// Get a menu item by name fn find_item(&self, name: &str) -> Option<crate::menu::MenuItem>; /// Set selected item fn set_item(&mut self, item: &crate::menu::MenuItem) -> bool; /// Find an item's index by its label fn find_index(&self, label: &str) -> i32; /// Return the text font fn text_font(&self) -> Font; /// Sets the text font fn set_text_font(&mut self, c: Font); /// Return the text size fn text_size(&self) -> i32; /// Sets the text size fn set_text_size(&mut self, c: i32); /// Return the text color fn text_color(&self) -> Color; /// Sets the text color fn set_text_color(&mut self, c: Color); /// Add a menu item along with its callback. /// The characters "&", "/", "\\", and "\_" (underscore) are treated as special characters in the label string. The "&" character specifies that the following character is an accelerator and will be underlined. /// The "\\" character is used to escape the next character in the string. Labels starting with the "\_" (underscore) character cause a divider to be placed after that menu item. /// Takes the menu item as a closure argument fn add<F: FnMut(&mut Self) + 'static>( &mut self, name: &str, shortcut: Shortcut, flag: crate::menu::MenuFlag, cb: F, ) where Self: Sized; /// Inserts a menu item at an index along with its callback. /// The characters "&", "/", "\\", and "\_" (underscore) are treated as special characters in the label string. The "&" character specifies that the following character is an accelerator and will be underlined. /// The "\\" character is used to escape the next character in the string. Labels starting with the "\_" (underscore) character cause a divider to be placed after that menu item. /// Takes the menu item as a closure argument fn insert<F: FnMut(&mut Self) + 'static>( &mut self, idx: i32, name: &str, shortcut: Shortcut, flag: crate::menu::MenuFlag, cb: F, ) where Self: Sized; /// Add a menu item along with an emit (sender and message). /// The characters "&", "/", "\\", and "\_" (underscore) are treated as special characters in the label string. The "&" character specifies that the following character is an accelerator and will be underlined. /// The "\\" character is used to escape the next character in the string. Labels starting with the "\_" (underscore) character cause a divider to be placed after that menu item. fn add_emit<T: 'static + Clone + Send + Sync>( &mut self, label: &str, shortcut: Shortcut, flag: crate::menu::MenuFlag, sender: crate::app::Sender<T>, msg: T, ) where Self: Sized; /// Inserts a menu item along with an emit (sender and message). /// The characters "&", "/", "\\", and "\_" (underscore) are treated as special characters in the label string. The "&" character specifies that the following character is an accelerator and will be underlined. /// The "\\" character is used to escape the next character in the string. Labels starting with the "\_" (underscore) character cause a divider to be placed after that menu item. fn insert_emit<T: 'static + Clone + Send + Sync>( &mut self, idx: i32, label: &str, shortcut: Shortcut, flag: crate::menu::MenuFlag, sender: crate::app::Sender<T>, msg: T, ) where Self: Sized; /// Remove a menu item by index fn remove(&mut self, idx: i32); /// Adds a simple text option to the Choice and `MenuButton` widgets. /// The characters "&", "/", "\\", "|", and "\_" (underscore) are treated as special characters in the label string. The "&" character specifies that the following character is an accelerator and will be underlined. /// The "\\" character is used to escape the next character in the string. Labels starting with the "\_" (underscore) character cause a divider to be placed after that menu item. fn add_choice(&mut self, text: &str); /// Gets the user choice from the Choice and `MenuButton` widgets fn choice(&self) -> Option<String>; /// Get index into menu of the last item chosen, returns -1 if no item was chosen fn value(&self) -> i32; /// Set index into menu of the last item chosen,return true if the new value is different than the old one fn set_value(&mut self, v: i32) -> bool; /// Clears the items in a menu, effectively deleting them. fn clear(&mut self); /// Clears a submenu by index, failure return `FltkErrorKind::FailedOperation` /// # Errors /// Errors on failure to clear the submenu fn clear_submenu(&mut self, idx: i32) -> Result<(), FltkError>; /// Clears the items in a menu, effectively deleting them, and recursively force-cleans capturing callbacks /// # Safety /// Deletes `user_data` and any captured objects in the callback unsafe fn unsafe_clear(&mut self); /// Clears a submenu by index, failure return `FltkErrorKind::FailedOperation`. Also recursively force-cleans capturing callbacks /// # Safety /// Deletes `user_data` and any captured objects in the callback /// # Errors /// Errors on failure to clear the submenu unsafe fn unsafe_clear_submenu(&mut self, idx: i32) -> Result<(), FltkError>; /// Get the size of the menu widget fn size(&self) -> i32; /// Get the text label of the menu item at index idx fn text(&self, idx: i32) -> Option<String>; /// Get the menu item at an index fn at(&self, idx: i32) -> Option<crate::menu::MenuItem>; /// Set the mode of a menu item by index and flag fn mode(&self, idx: i32) -> crate::menu::MenuFlag; /// Get the mode of a menu item fn set_mode(&mut self, idx: i32, flag: crate::menu::MenuFlag); /// End the menu fn end(&mut self); /// Set the `down_box` of the widget fn set_down_frame(&mut self, f: FrameType); /// Get the down frame type of the widget fn down_frame(&self) -> FrameType; /// Make a menu globally accessible from any window fn global(&mut self); } /// Defines the methods implemented by all valuator widgets pub unsafe trait ValuatorExt: WidgetExt { /// Set bounds of a valuator fn set_bounds(&mut self, a: f64, b: f64); /// Get the minimum bound of a valuator fn minimum(&self) -> f64; /// Set the minimum bound of a valuator fn set_minimum(&mut self, a: f64); /// Get the maximum bound of a valuator fn maximum(&self) -> f64; /// Set the maximum bound of a valuator fn set_maximum(&mut self, a: f64); /// Set the range of a valuator fn set_range(&mut self, a: f64, b: f64); /// Set change step of a valuator. /// Rounds to multiples of a/b, or no rounding if a is zero fn set_step(&mut self, a: f64, b: i32); /// Get change step of a valuator fn step(&self) -> f64; /// Set the precision of a valuator fn set_precision(&mut self, digits: i32); /// Get the value of a valuator fn value(&self) -> f64; /// Set the value of a valuator fn set_value(&mut self, arg2: f64); /// Set the format of a valuator /// # Errors /// Errors on failure to set the format of the widget fn format(&mut self, arg2: &str) -> Result<(), FltkError>; /// Round the valuator fn round(&self, arg2: f64) -> f64; /// Clamp the valuator fn clamp(&self, arg2: f64) -> f64; /// Increment the valuator fn increment(&mut self, arg2: f64, arg3: i32) -> f64; } /// Defines the methods implemented by `TextDisplay` and `TextEditor` pub unsafe trait DisplayExt: WidgetExt { /// Get the associated `TextBuffer` fn buffer(&self) -> Option<crate::text::TextBuffer>; /// Sets the associated `TextBuffer` fn set_buffer<B: Into<Option<crate::text::TextBuffer>>>(&mut self, buffer: B); /// Get the associated style `TextBuffer` fn style_buffer(&self) -> Option<crate::text::TextBuffer>; /// Return the text font fn text_font(&self) -> Font; /// Sets the text font fn set_text_font(&mut self, font: Font); /// Return the text color fn text_color(&self) -> Color; /// Sets the text color fn set_text_color(&mut self, color: Color); /// Return the text size fn text_size(&self) -> i32; /// Sets the text size fn set_text_size(&mut self, sz: i32); /// Scroll down the Display widget fn scroll(&mut self, top_line_num: i32, horiz_offset: i32); /// Insert into Display widget fn insert(&self, text: &str); /// Set the insert position fn set_insert_position(&mut self, new_pos: i32); /// Return the insert position fn insert_position(&self) -> i32; /// Gets the x and y positions of the cursor fn position_to_xy(&self, pos: i32) -> (i32, i32); /// Counts the lines from start to end fn count_lines(&self, start: i32, end: i32, is_line_start: bool) -> i32; /// Moves the cursor right /// # Errors /// Errors on failure to move the cursor fn move_right(&mut self) -> Result<(), FltkError>; /// Moves the cursor left /// # Errors /// Errors on failure to move the cursor fn move_left(&mut self) -> Result<(), FltkError>; /// Moves the cursor up /// # Errors /// Errors on failure to move the cursor fn move_up(&mut self) -> Result<(), FltkError>; /// Moves the cursor down /// # Errors /// Errors on failure to move the cursor fn move_down(&mut self) -> Result<(), FltkError>; /// Shows/hides the cursor fn show_cursor(&mut self, val: bool); /// Sets the style of the text widget fn set_highlight_data<B: Into<Option<crate::text::TextBuffer>>>( &mut self, style_buffer: B, entries: Vec<crate::text::StyleTableEntry>, ); /// Sets the cursor style fn set_cursor_style(&mut self, style: crate::text::Cursor); /// Sets the cursor color fn set_cursor_color(&mut self, color: Color); /// Sets the scrollbar size in pixels fn set_scrollbar_size(&mut self, size: i32); /// Sets the scrollbar alignment fn set_scrollbar_align(&mut self, align: Align); /// Returns the cursor style fn cursor_style(&self) -> crate::text::Cursor; /// Returns the cursor color fn cursor_color(&self) -> Color; /// Returns the scrollbar size in pixels fn scrollbar_size(&self) -> i32; /// Returns the scrollbar alignment fn scrollbar_align(&self) -> Align; /// Returns the beginning of the line from the current position. /// Returns new position as index fn line_start(&self, pos: i32) -> i32; /// Returns the ending of the line from the current position. /// Returns new position as index fn line_end(&self, start_pos: i32, is_line_start: bool) -> i32; /// Skips lines from `start_pos` fn skip_lines(&mut self, start_pos: i32, lines: i32, is_line_start: bool) -> i32; /// Rewinds the lines fn rewind_lines(&mut self, start_pos: i32, lines: i32) -> i32; /// Goes to the next word fn next_word(&mut self); /// Goes to the previous word fn previous_word(&mut self); /// Returns the position of the start of the word, relative to the current position fn word_start(&self, pos: i32) -> i32; /// Returns the position of the end of the word, relative to the current position fn word_end(&self, pos: i32) -> i32; /// Convert an x pixel position into a column number. fn x_to_col(&self, x: f64) -> f64; /// Convert a column number into an x pixel position fn col_to_x(&self, col: f64) -> f64; /// Sets the linenumber width fn set_linenumber_width(&mut self, w: i32); /// Gets the linenumber width fn linenumber_width(&self) -> i32; /// Sets the linenumber font fn set_linenumber_font(&mut self, font: Font); /// Gets the linenumber font fn linenumber_font(&self) -> Font; /// Sets the linenumber size fn set_linenumber_size(&mut self, size: i32); /// Gets the linenumber size fn linenumber_size(&self) -> i32; /// Sets the linenumber foreground color fn set_linenumber_fgcolor(&mut self, color: Color); /// Gets the linenumber foreground color fn linenumber_fgcolor(&self) -> Color; /// Sets the linenumber background color fn set_linenumber_bgcolor(&mut self, color: Color); /// Gets the linenumber background color fn linenumber_bgcolor(&self) -> Color; /// Sets the linenumber alignment fn set_linenumber_align(&mut self, align: Align); /// Gets the linenumber alignment fn linenumber_align(&self) -> Align; /// Checks whether a pixel is within a text selection fn in_selection(&self, x: i32, y: i32) -> bool; /// Sets the wrap mode of the Display widget. /// If the wrap mode is `AtColumn`, wrap margin is the column. /// If the wrap mode is `AtPixel`, wrap margin is the pixel. /// For more [info](https://www.fltk.org/doc-1.4/classFl__Text__Display.html#ab9378d48b949f8fc7da04c6be4142c54) fn wrap_mode(&mut self, wrap: crate::text::WrapMode, wrap_margin: i32); /// Correct a column number based on an unconstrained position fn wrapped_column(&self, row: i32, column: i32) -> i32; /// Correct a row number from an unconstrained position fn wrapped_row(&self, row: i32) -> i32; } /// Defines the methods implemented by all browser types pub unsafe trait BrowserExt: WidgetExt { /// Removes the specified line. /// Lines start at 1 fn remove(&mut self, line: i32); /// Adds an item fn add(&mut self, item: &str); /// Inserts an item at an index. /// Lines start at 1 fn insert(&mut self, line: i32, item: &str); /// Moves an item. /// Lines start at 1 fn move_item(&mut self, to: i32, from: i32); /// Swaps 2 items. /// Lines start at 1 fn swap(&mut self, a: i32, b: i32); /// Clears the browser widget fn clear(&mut self); /// Returns the number of items fn size(&self) -> i32; /// Select an item at the specified line. /// Lines start at 1 fn select(&mut self, line: i32); /// Returns whether the item is selected /// Lines start at 1 fn selected(&self, line: i32) -> bool; /// Returns the text of the item at `line`. /// Lines start at 1 fn text(&self, line: i32) -> Option<String>; /// Returns the text of the selected item. /// Lines start at 1 fn selected_text(&self) -> Option<String>; /// Sets the text of the selected item. /// Lines start at 1 fn set_text(&mut self, line: i32, txt: &str); /// Load a file /// # Errors /// Errors on non-existent paths fn load<P: AsRef<std::path::Path>>(&mut self, path: P) -> Result<(), FltkError>; /// Return the text size fn text_size(&self) -> i32; /// Sets the text size. /// Lines start at 1 fn set_text_size(&mut self, sz: i32); /// Sets the icon for browser elements. /// Lines start at 1 fn set_icon<Img: ImageExt>(&mut self, line: i32, image: Option<Img>); /// Returns the icon of a browser element. /// Lines start at 1 fn icon(&self, line: i32) -> Option<Box<dyn ImageExt>>; /// Removes the icon of a browser element. /// Lines start at 1 fn remove_icon(&mut self, line: i32); /// Scrolls the browser so the top item in the browser is showing the specified line. /// Lines start at 1 fn top_line(&mut self, line: i32); /// Scrolls the browser so the bottom item in the browser is showing the specified line. /// Lines start at 1 fn bottom_line(&mut self, line: i32); /// Scrolls the browser so the middle item in the browser is showing the specified line. /// Lines start at 1 fn middle_line(&mut self, line: i32); /// Gets the current format code prefix character, which by default is '\@'. /// More info [here](https://www.fltk.org/doc-1.3/classFl__Browser.html#a129dca59d64baf166503ba59341add69) fn format_char(&self) -> char; /// Sets the current format code prefix character to \p c. The default prefix is '\@'. /// c should be ascii fn set_format_char(&mut self, c: char); /// Gets the current column separator character. The default is '\t' fn column_char(&self) -> char; /// Sets the column separator to c. This will only have an effect if you also use `set_column_widths()`. /// c should be ascii fn set_column_char(&mut self, c: char); /// Gets the current column width array fn column_widths(&self) -> Vec<i32>; /// Sets the current column width array fn set_column_widths(&mut self, arr: &'static [i32]); /// Returns whether a certain line is displayed fn displayed(&self, line: i32) -> bool; /// Makes a specified line visible fn make_visible(&mut self, line: i32); /// Gets the vertical scroll position of the list as a pixel position fn position(&self) -> i32; /// Sets the vertical scroll position of the list as a pixel position fn set_position(&mut self, pos: i32); /// Gets the horizontal scroll position of the list as a pixel position fn hposition(&self) -> i32; /// Sets the horizontal scroll position of the list as a pixel position fn set_hposition(&mut self, pos: i32); /// Returns the type of scrollbar associated with the browser fn has_scrollbar(&self) -> crate::browser::BrowserScrollbar; /// Sets the type of scrollbar associated with the browser fn set_has_scrollbar(&mut self, mode: crate::browser::BrowserScrollbar); /// Gets the scrollbar size fn scrollbar_size(&self) -> i32; /// Sets the scrollbar size fn set_scrollbar_size(&mut self, new_size: i32); /// Sorts the items of the browser fn sort(&mut self); /// Returns the vertical scrollbar fn scrollbar(&self) -> Box<dyn ValuatorExt>; /// Returns the horizontal scrollbar fn hscrollbar(&self) -> Box<dyn ValuatorExt>; /// Returns the selected line, returns 0 if no line is selected fn value(&self) -> i32; } /// Defines the methods implemented by table types pub unsafe trait TableExt: GroupExt { /// Clears the table fn clear(&mut self); /// Sets the table frame fn set_table_frame(&mut self, frame: FrameType); /// Gets the table frame fn table_frame(&self) -> FrameType; /// Sets the number of rows fn set_rows(&mut self, val: i32); /// Gets the number of rows fn rows(&self) -> i32; /// Sets the number of columns fn set_cols(&mut self, val: i32); /// Gets the number of columns fn cols(&self) -> i32; /// The range of row and column numbers for all visible and partially visible cells in the table. /// Returns (`row_top`, `col_left`, `row_bot`, `col_right`) fn visible_cells(&self) -> (i32, i32, i32, i32); /// Returns whether the resize is interactive fn is_interactive_resize(&self) -> bool; /// Returns whether a row is resizable fn row_resize(&self) -> bool; /// Sets a row to be resizable fn set_row_resize(&mut self, flag: bool); /// Returns whether a column is resizable fn col_resize(&self) -> bool; /// Sets a column to be resizable fn set_col_resize(&mut self, flag: bool); /// Returns the current column minimum resize value. fn col_resize_min(&self) -> i32; /// Sets the current column minimum resize value. fn set_col_resize_min(&mut self, val: i32); /// Returns the current row minimum resize value. fn row_resize_min(&self) -> i32; /// Sets the current row minimum resize value. fn set_row_resize_min(&mut self, val: i32); /// Returns if row headers are enabled or not fn row_header(&self) -> bool; /// Sets whether a row headers are enabled or not fn set_row_header(&mut self, flag: bool); /// Returns if column headers are enabled or not fn col_header(&self) -> bool; /// Sets whether a column headers are enabled or not fn set_col_header(&mut self, flag: bool); /// Sets the column header height fn set_col_header_height(&mut self, height: i32); /// Gets the column header height fn col_header_height(&self) -> i32; /// Sets the row header width fn set_row_header_width(&mut self, width: i32); /// Gets the row header width fn row_header_width(&self) -> i32; /// Sets the row header color fn set_row_header_color(&mut self, val: Color); /// Gets the row header color fn row_header_color(&self) -> Color; /// Sets the column header color fn set_col_header_color(&mut self, val: Color); /// Gets the row header color fn col_header_color(&self) -> Color; /// Sets the row's height fn set_row_height(&mut self, row: i32, height: i32); /// Gets the row's height fn row_height(&self, row: i32) -> i32; /// Sets the columns's width fn set_col_width(&mut self, col: i32, width: i32); /// Gets the columns's width fn col_width(&self, col: i32) -> i32; /// Sets all rows height fn set_row_height_all(&mut self, height: i32); /// Sets all columns's width fn set_col_width_all(&mut self, width: i32); /// Sets the row's position fn set_row_position(&mut self, row: i32); /// Sets the columns's position fn set_col_position(&mut self, col: i32); /// Gets the row's position fn row_position(&self) -> i32; /// Gets the columns's position fn col_position(&self) -> i32; /// Sets the top row fn set_top_row(&mut self, row: i32); /// Gets the top row fn top_row(&self) -> i32; /// Returns whether a cell is selected fn is_selected(&self, r: i32, c: i32) -> bool; /// Gets the selection. /// Returns (`row_top`, `col_left`, `row_bot`, `col_right`) fn get_selection(&self) -> (i32, i32, i32, i32); /// Sets the selection fn set_selection(&mut self, row_top: i32, col_left: i32, row_bot: i32, col_right: i32); /// Unset selection fn unset_selection(&mut self); /// Moves the cursor with shift select /// # Errors /// Errors on failure to move the cursor fn move_cursor_with_shift_select( &mut self, r: i32, c: i32, shiftselect: bool, ) -> Result<(), FltkError>; /// Moves the cursor /// # Errors /// Errors on failure to move the cursor fn move_cursor(&mut self, r: i32, c: i32) -> Result<(), FltkError>; /// Resets the internal array of widget sizes and positions. fn init_sizes(&mut self); /// Returns the scrollbar size fn scrollbar_size(&self) -> i32; /// Sets the scrollbar size fn set_scrollbar_size(&mut self, new_size: i32); /// Sets whether tab key cell navigation is enabled fn set_tab_cell_nav(&mut self, val: bool); /// Returns whether tab key cell navigation is enabled fn tab_cell_nav(&self) -> bool; /// Override `draw_cell`. /// callback args: &mut self, `TableContext`, Row: i32, Column: i32, X: i32, Y: i32, Width: i32 and Height: i32. /// takes the widget as a closure argument fn draw_cell< F: FnMut(&mut Self, crate::table::TableContext, i32, i32, i32, i32, i32, i32) + 'static, >( &mut self, cb: F, ); /// INTERNAL: Retrieve the draw cell data /// # Safety /// Can return multiple mutable references to the `draw_cell_data` unsafe fn draw_cell_data(&self) -> Option<Box<dyn FnMut()>>; /// Get the callback column, should be called from within a callback fn callback_col(&self) -> i32; /// Get the callback row, should be called from within a callback fn callback_row(&self) -> i32; /// Get the callback context, should be called from within a callback fn callback_context(&self) -> crate::table::TableContext; } /// Defines the methods implemented by all image types pub unsafe trait ImageExt { /// Performs a deep copy of the image fn copy(&self) -> Self where Self: Sized; /// Draws the image at the presupplied coordinates and size fn draw(&mut self, x: i32, y: i32, width: i32, height: i32); /// Return the width of the image fn width(&self) -> i32; /// Return the height of the image fn height(&self) -> i32; /// Return the width of the image fn w(&self) -> i32; /// Return the height of the image fn h(&self) -> i32; /// Retunrs a pointer of the image /// # Safety /// Can return multiple mutable pointers to the image unsafe fn as_image_ptr(&self) -> *mut fltk_sys::image::Fl_Image; /// Transforms a raw image pointer to an image /// # Safety /// The pointer must be valid unsafe fn from_image_ptr(ptr: *mut fltk_sys::image::Fl_Image) -> Self where Self: Sized; /// Returns the underlying raw rgb image data fn to_rgb_data(&self) -> Vec<u8>; /// Returns the underlying raw image data fn to_raw_data(&self) -> *const *const u8; /// Transforms the image into an `RgbImage` /// # Errors /// Errors on failure to transform to `RgbImage` fn to_rgb(&self) -> Result<crate::image::RgbImage, FltkError>; /// Scales the image fn scale(&mut self, width: i32, height: i32, proportional: bool, can_expand: bool); /// Return the count of an image fn count(&self) -> i32; /// Gets the image's data width fn data_w(&self) -> i32; /// Gets the image's data height fn data_h(&self) -> i32; /// Gets the image's depth fn depth(&self) -> ColorDepth; /// Gets the image's line data size fn ld(&self) -> i32; /// Greys the image fn inactive(&mut self); /// Deletes the image /// # Safety /// An image shouldn't be deleted while it's being used by a widget unsafe fn delete(img: Self) where Self: Sized; /// Checks if the image was deleted fn was_deleted(&self) -> bool; /// INTERNAL: Manually increment the atomic refcount /// # Safety /// The underlying image pointer must be valid unsafe fn increment_arc(&mut self); /// INTERNAL: Manually decrement the atomic refcount /// # Safety /// The underlying image pointer must be valid unsafe fn decrement_arc(&mut self); /// Transforms an Image base into another Image /// # Safety /// Can be unsafe if used to downcast to an image of different format unsafe fn into_image<I: ImageExt>(self) -> I where Self: Sized; } /// Defines the methods implemented by all surface types, currently `ImageSurface` pub trait SurfaceDevice { /// Checks whether this surface is the current surface fn is_current(&self) -> bool; /// Get the current surface fn surface() -> Self; /// Push a surface as a current surface fn push_current(new_current: &Self); /// Pop the current surface fn pop_current(); }