// Copyright 2012-2023 David Robillard // SPDX-License-Identifier: ISC #ifndef PUGL_PUGL_H #define PUGL_PUGL_H #include "pugl/attributes.h" #include #include #ifndef __cplusplus # include #endif PUGL_BEGIN_DECLS /** @defgroup pugl Pugl C API Pugl C API. @{ */ /** @defgroup pugl_geometry_types Geometry Types @{ */ /** A pixel coordinate within/of a view. This is relative to the top left corner of the view's parent, or to the top left corner of the view itself, depending on the context. There are platform-imposed limits on window positions. For portability, applications should keep coordinates between -16000 and 16000. Note that negative frame coordinates are possible, for example with multiple screens. */ typedef int16_t PuglCoord; /** A pixel span (width or height) within/of a view. Due to platform limits, the span of a view in either dimension should be between 1 and 10000. */ typedef uint16_t PuglSpan; /** A rectangle in a view or on the screen. This type is used to describe two things: the position and size of a view (for configuring), or a rectangle within a view (for exposing). The coordinate (0, 0) represents the top-left pixel of the parent window (or display if there isn't one), or the top-left pixel of the view, respectively. */ typedef struct { PuglCoord x; PuglCoord y; PuglSpan width; PuglSpan height; } PuglRect; /** @} @defgroup pugl_events Events All updates to the view happen via events, which are dispatched to the view's event function. An event is a tagged union with a type, and a set of more specific fields depending on the type. @{ */ /// The type of a PuglEvent typedef enum { PUGL_NOTHING, ///< No event PUGL_REALIZE, ///< View realized, a #PuglRealizeEvent PUGL_UNREALIZE, ///< View unrealizeed, a #PuglUnrealizeEvent PUGL_CONFIGURE, ///< View configured, a #PuglConfigureEvent PUGL_UPDATE, ///< View ready to draw, a #PuglUpdateEvent PUGL_EXPOSE, ///< View must be drawn, a #PuglExposeEvent PUGL_CLOSE, ///< View will be closed, a #PuglCloseEvent PUGL_FOCUS_IN, ///< Keyboard focus entered view, a #PuglFocusEvent PUGL_FOCUS_OUT, ///< Keyboard focus left view, a #PuglFocusEvent PUGL_KEY_PRESS, ///< Key pressed, a #PuglKeyEvent PUGL_KEY_RELEASE, ///< Key released, a #PuglKeyEvent PUGL_TEXT, ///< Character entered, a #PuglTextEvent PUGL_POINTER_IN, ///< Pointer entered view, a #PuglCrossingEvent PUGL_POINTER_OUT, ///< Pointer left view, a #PuglCrossingEvent PUGL_BUTTON_PRESS, ///< Mouse button pressed, a #PuglButtonEvent PUGL_BUTTON_RELEASE, ///< Mouse button released, a #PuglButtonEvent PUGL_MOTION, ///< Pointer moved, a #PuglMotionEvent PUGL_SCROLL, ///< Scrolled, a #PuglScrollEvent PUGL_CLIENT, ///< Custom client message, a #PuglClientEvent PUGL_TIMER, ///< Timer triggered, a #PuglTimerEvent PUGL_LOOP_ENTER, ///< Recursive loop entered, a #PuglLoopEnterEvent PUGL_LOOP_LEAVE, ///< Recursive loop left, a #PuglLoopLeaveEvent PUGL_DATA_OFFER, ///< Data offered from clipboard, a #PuglDataOfferEvent PUGL_DATA, ///< Data available from clipboard, a #PuglDataEvent } PuglEventType; /// Common flags for all event types typedef enum { PUGL_IS_SEND_EVENT = 1, ///< Event is synthetic PUGL_IS_HINT = 2 ///< Event is a hint (not direct user input) } PuglEventFlag; /// Bitwise OR of #PuglEventFlag values typedef uint32_t PuglEventFlags; /// Reason for a PuglCrossingEvent typedef enum { PUGL_CROSSING_NORMAL, ///< Crossing due to pointer motion PUGL_CROSSING_GRAB, ///< Crossing due to a grab PUGL_CROSSING_UNGRAB ///< Crossing due to a grab release } PuglCrossingMode; /// Common header for all event structs typedef struct { PuglEventType type; ///< Event type PuglEventFlags flags; ///< Bitwise OR of #PuglEventFlag values } PuglAnyEvent; /** @defgroup pugl_management_events Management Events @{ */ /** View style flags. Style flags reflect special modes and states supported by the window system. Applications should ideally use a single main view, but can monitor or manipulate style flags to better integrate with the window system. */ typedef enum { /// View is mapped to a real window and potentially visible PUGL_VIEW_STYLE_MAPPED = 1U << 0U, /// View is modal, typically a dialog box of its transient parent PUGL_VIEW_STYLE_MODAL = 1U << 1U, /// View should be above most others PUGL_VIEW_STYLE_ABOVE = 1U << 2U, /// View should be below most others PUGL_VIEW_STYLE_BELOW = 1U << 3U, /// View is minimized, shaded, or otherwise invisible PUGL_VIEW_STYLE_HIDDEN = 1U << 4U, /// View is maximized to fill the screen vertically PUGL_VIEW_STYLE_TALL = 1U << 5U, /// View is maximized to fill the screen horizontally PUGL_VIEW_STYLE_WIDE = 1U << 6U, /// View is enlarged to fill the entire screen with no decorations PUGL_VIEW_STYLE_FULLSCREEN = 1U << 7U, /// View is being resized PUGL_VIEW_STYLE_RESIZING = 1U << 8U, /// View is ready for input or otherwise demanding attention PUGL_VIEW_STYLE_DEMANDING = 1U << 9U, } PuglViewStyleFlag; /// The maximum #PuglViewStyleFlag value #define PUGL_MAX_VIEW_STYLE_FLAG PUGL_VIEW_STYLE_DEMANDING /// Bitwise OR of #PuglViewStyleFlag values typedef uint32_t PuglViewStyleFlags; /** View realize event. This event is sent when a view is realized before it is first displayed, with the graphics context entered. This is typically used for setting up the graphics system, for example by loading OpenGL extensions. This event type has no extra fields. */ typedef PuglAnyEvent PuglRealizeEvent; /** View unrealize event. This event is the counterpart to #PuglRealizeEvent, and is sent when the view will no longer be displayed. This is typically used for tearing down the graphics system, or otherwise freeing any resources allocated when the realize event was handled. This event type has no extra fields. */ typedef PuglAnyEvent PuglUnrealizeEvent; /** View resize or move event. A configure event is sent whenever the view is resized or moved. When a configure event is received, the graphics context is active but not set up for drawing. For example, it is valid to adjust the OpenGL viewport or otherwise configure the context, but not to draw anything. */ typedef struct { PuglEventType type; ///< #PUGL_CONFIGURE PuglEventFlags flags; ///< Bitwise OR of #PuglEventFlag values PuglCoord x; ///< Parent-relative X coordinate of view PuglCoord y; ///< Parent-relative Y coordinate of view PuglSpan width; ///< Width of view PuglSpan height; ///< Height of view PuglViewStyleFlags style; ///< Bitwise OR of #PuglViewStyleFlag flags } PuglConfigureEvent; /** Recursive loop enter event. This event is sent when the window system enters a recursive loop. The main loop will be stalled and no expose events will be received while in the recursive loop. To give the application full control, Pugl does not do any special handling of this situation, but this event can be used to install a timer to perform continuous actions (such as drawing) on platforms that do this. - MacOS: A recursive loop is entered while the window is being live resized. - Windows: A recursive loop is entered while the window is being live resized or the menu is shown. - X11: A recursive loop is never entered and the event loop runs as usual while the view is being resized. This event type has no extra fields. */ typedef PuglAnyEvent PuglLoopEnterEvent; /** Recursive loop leave event. This event is sent after a loop enter event when the recursive loop is finished and normal iteration will continue. This event type has no extra fields. */ typedef PuglAnyEvent PuglLoopLeaveEvent; /** View close event. This event is sent when the view is to be closed, for example when the user clicks the close button. This event type has no extra fields. */ typedef PuglAnyEvent PuglCloseEvent; /** @} @defgroup pugl_update_events Update Events @{ */ /** View update event. This event is sent to every view near the end of a main loop iteration when any pending exposures are about to be redrawn. It is typically used to mark regions to expose with puglPostRedisplay() or puglPostRedisplayRect(). For example, to continuously animate, a view calls puglPostRedisplay() when an update event is received, and it will then shortly receive an expose event. */ typedef PuglAnyEvent PuglUpdateEvent; /** Expose event for when a region must be redrawn. When an expose event is received, the graphics context is active, and the view must draw the entire specified region. The contents of the region are undefined, there is no preservation of anything drawn previously. */ typedef struct { PuglEventType type; ///< #PUGL_EXPOSE PuglEventFlags flags; ///< Bitwise OR of #PuglEventFlag values PuglCoord x; ///< View-relative top-left X coordinate of region PuglCoord y; ///< View-relative top-left Y coordinate of region PuglSpan width; ///< Width of exposed region PuglSpan height; ///< Height of exposed region } PuglExposeEvent; /** @} @defgroup pugl_keyboard_events Keyboard Events @{ */ /** Keyboard key codepoints. All keys are identified by a Unicode code point in PuglKeyEvent::key. This enumeration defines constants for special keys that do not have a standard code point, and some convenience constants for control characters. Note that all keys are handled in the same way, this enumeration is just for convenience when writing hard-coded key bindings. Keys that do not have a standard code point use values in the Private Use Area in the Basic Multilingual Plane (`U+E000` to `U+F8FF`). Applications must take care to not interpret these values beyond key detection, the mapping used here is arbitrary and specific to Pugl. */ typedef enum { // ASCII control codes PUGL_KEY_BACKSPACE = 0x08, PUGL_KEY_ESCAPE = 0x1B, PUGL_KEY_DELETE = 0x7F, // Unicode Private Use Area PUGL_KEY_F1 = 0xE000, PUGL_KEY_F2, PUGL_KEY_F3, PUGL_KEY_F4, PUGL_KEY_F5, PUGL_KEY_F6, PUGL_KEY_F7, PUGL_KEY_F8, PUGL_KEY_F9, PUGL_KEY_F10, PUGL_KEY_F11, PUGL_KEY_F12, PUGL_KEY_LEFT, PUGL_KEY_UP, PUGL_KEY_RIGHT, PUGL_KEY_DOWN, PUGL_KEY_PAGE_UP, PUGL_KEY_PAGE_DOWN, PUGL_KEY_HOME, PUGL_KEY_END, PUGL_KEY_INSERT, PUGL_KEY_SHIFT, PUGL_KEY_SHIFT_L = PUGL_KEY_SHIFT, PUGL_KEY_SHIFT_R, PUGL_KEY_CTRL, PUGL_KEY_CTRL_L = PUGL_KEY_CTRL, PUGL_KEY_CTRL_R, PUGL_KEY_ALT, PUGL_KEY_ALT_L = PUGL_KEY_ALT, PUGL_KEY_ALT_R, PUGL_KEY_SUPER, PUGL_KEY_SUPER_L = PUGL_KEY_SUPER, PUGL_KEY_SUPER_R, PUGL_KEY_MENU, PUGL_KEY_CAPS_LOCK, PUGL_KEY_SCROLL_LOCK, PUGL_KEY_NUM_LOCK, PUGL_KEY_PRINT_SCREEN, PUGL_KEY_PAUSE } PuglKey; /// Keyboard modifier flags typedef enum { PUGL_MOD_SHIFT = 1U << 0U, ///< Shift key PUGL_MOD_CTRL = 1U << 1U, ///< Control key PUGL_MOD_ALT = 1U << 2U, ///< Alt/Option key PUGL_MOD_SUPER = 1U << 3U ///< Mod4/Command/Windows key } PuglMod; /// Bitwise OR of #PuglMod values typedef uint32_t PuglMods; /** Keyboard focus event. This event is sent whenever the view gains or loses the keyboard focus. The view with the keyboard focus will receive any key press or release events. */ typedef struct { PuglEventType type; ///< #PUGL_FOCUS_IN or #PUGL_FOCUS_OUT PuglEventFlags flags; ///< Bitwise OR of #PuglEventFlag values PuglCrossingMode mode; ///< Reason for focus change } PuglFocusEvent; /** Key press or release event. This event represents low-level key presses and releases. This can be used for "direct" keyboard handing like key bindings, but must not be interpreted as text input. Keys are represented portably as Unicode code points, using the "natural" code point for the key where possible (see #PuglKey for details). The `key` field is the code for the pressed key, without any modifiers applied. For example, a press or release of the 'A' key will have `key` 97 ('a') regardless of whether shift or control are being held. Alternatively, the raw `keycode` can be used to work directly with physical keys, but note that this value is not portable and differs between platforms and hardware. */ typedef struct { PuglEventType type; ///< #PUGL_KEY_PRESS or #PUGL_KEY_RELEASE PuglEventFlags flags; ///< Bitwise OR of #PuglEventFlag values double time; ///< Time in seconds double x; ///< View-relative X coordinate double y; ///< View-relative Y coordinate double xRoot; ///< Root-relative X coordinate double yRoot; ///< Root-relative Y coordinate PuglMods state; ///< Bitwise OR of #PuglMod flags uint32_t keycode; ///< Raw key code uint32_t key; ///< Unshifted Unicode character code, or 0 } PuglKeyEvent; /** Character input event. This event represents text input, usually as the result of a key press. The text is given both as a Unicode character code and a UTF-8 string. Note that this event is generated by the platform's input system, so there is not necessarily a direct correspondence between text events and physical key presses. For example, with some input methods a sequence of several key presses will generate a single character. */ typedef struct { PuglEventType type; ///< #PUGL_TEXT PuglEventFlags flags; ///< Bitwise OR of #PuglEventFlag values double time; ///< Time in seconds double x; ///< View-relative X coordinate double y; ///< View-relative Y coordinate double xRoot; ///< Root-relative X coordinate double yRoot; ///< Root-relative Y coordinate PuglMods state; ///< Bitwise OR of #PuglMod flags uint32_t keycode; ///< Raw key code uint32_t character; ///< Unicode character code char string[8]; ///< UTF-8 string } PuglTextEvent; /** @} @defgroup pugl_pointer_events Pointer Events @{ */ /** Scroll direction. Describes the direction of a #PuglScrollEvent along with whether the scroll is a "smooth" scroll. The discrete directions are for devices like mouse wheels with constrained axes, while a smooth scroll is for those with arbitrary scroll direction freedom, like some touchpads. */ typedef enum { PUGL_SCROLL_UP, ///< Scroll up PUGL_SCROLL_DOWN, ///< Scroll down PUGL_SCROLL_LEFT, ///< Scroll left PUGL_SCROLL_RIGHT, ///< Scroll right PUGL_SCROLL_SMOOTH ///< Smooth scroll in any direction } PuglScrollDirection; /** Pointer enter or leave event. This event is sent when the pointer enters or leaves the view. This can happen for several reasons (not just the user dragging the pointer over the window edge), as described by the `mode` field. */ typedef struct { PuglEventType type; ///< #PUGL_POINTER_IN or #PUGL_POINTER_OUT PuglEventFlags flags; ///< Bitwise OR of #PuglEventFlag values double time; ///< Time in seconds double x; ///< View-relative X coordinate double y; ///< View-relative Y coordinate double xRoot; ///< Root-relative X coordinate double yRoot; ///< Root-relative Y coordinate PuglMods state; ///< Bitwise OR of #PuglMod flags PuglCrossingMode mode; ///< Reason for crossing } PuglCrossingEvent; /** Button press or release event. Button numbers start from 0, and are ordered: primary, secondary, middle. So, on a typical right-handed mouse, the button numbers are: Left: 0 Right: 1 Middle (often a wheel): 2 Higher button numbers are reported in the same order they are represented on the system. There is no universal standard here, but buttons 3 and 4 are typically a pair of buttons or a rocker, which are usually bound to "back" and "forward" operations. Note that these numbers may differ from those used on the underlying platform, since they are manipulated to provide a consistent portable API. */ typedef struct { PuglEventType type; ///< #PUGL_BUTTON_PRESS or #PUGL_BUTTON_RELEASE PuglEventFlags flags; ///< Bitwise OR of #PuglEventFlag values double time; ///< Time in seconds double x; ///< View-relative X coordinate double y; ///< View-relative Y coordinate double xRoot; ///< Root-relative X coordinate double yRoot; ///< Root-relative Y coordinate PuglMods state; ///< Bitwise OR of #PuglMod flags uint32_t button; ///< Button number starting from 0 } PuglButtonEvent; /** Pointer motion event. */ typedef struct { PuglEventType type; ///< #PUGL_MOTION PuglEventFlags flags; ///< Bitwise OR of #PuglEventFlag values double time; ///< Time in seconds double x; ///< View-relative X coordinate double y; ///< View-relative Y coordinate double xRoot; ///< Root-relative X coordinate double yRoot; ///< Root-relative Y coordinate PuglMods state; ///< Bitwise OR of #PuglMod flags } PuglMotionEvent; /** Scroll event. The scroll distance is expressed in "lines", an arbitrary unit that corresponds to a single tick of a detented mouse wheel. For example, `dy` = 1.0 scrolls 1 line up. Some systems and devices support finer resolution and/or higher values for fast scrolls, so programs should handle any value gracefully. */ typedef struct { PuglEventType type; ///< #PUGL_SCROLL PuglEventFlags flags; ///< Bitwise OR of #PuglEventFlag values double time; ///< Time in seconds double x; ///< View-relative X coordinate double y; ///< View-relative Y coordinate double xRoot; ///< Root-relative X coordinate double yRoot; ///< Root-relative Y coordinate PuglMods state; ///< Bitwise OR of #PuglMod flags PuglScrollDirection direction; ///< Scroll direction double dx; ///< Scroll X distance in lines double dy; ///< Scroll Y distance in lines } PuglScrollEvent; /** @} @defgroup pugl_custom_events Custom Events @{ */ /** Custom client message event. This can be used to send a custom message to a view, which is delivered via the window system and processed in the event loop as usual. Among other things, this makes it possible to wake up the event loop for any reason. */ typedef struct { PuglEventType type; ///< #PUGL_CLIENT PuglEventFlags flags; ///< Bitwise OR of #PuglEventFlag values uintptr_t data1; ///< Client-specific data uintptr_t data2; ///< Client-specific data } PuglClientEvent; /** Timer event. This event is sent at the regular interval specified in the call to puglStartTimer() that activated it. The `id` is the application-specific ID given to puglStartTimer() which distinguishes this timer from others. It should always be checked in the event handler, even in applications that register only one timer. */ typedef struct { PuglEventType type; ///< #PUGL_TIMER PuglEventFlags flags; ///< Bitwise OR of #PuglEventFlag values uintptr_t id; ///< Timer ID } PuglTimerEvent; /** @} @defgroup pugl_clipboard_events Clipboard Events @{ */ /** Clipboard data offer event. This event is sent when a clipboard has data present, possibly with several datatypes. While handling this event, the types can be investigated with puglGetClipboardType() to decide whether to accept the offer with puglAcceptOffer(). */ typedef struct { PuglEventType type; ///< #PUGL_DATA_OFFER PuglEventFlags flags; ///< Bitwise OR of #PuglEventFlag values double time; ///< Time in seconds } PuglDataOfferEvent; /** Clipboard data event. This event is sent after accepting a data offer when the data has been retrieved and converted. While handling this event, the data can be accessed with puglGetClipboard(). */ typedef struct { PuglEventType type; ///< #PUGL_DATA PuglEventFlags flags; ///< Bitwise OR of #PuglEventFlag values double time; ///< Time in seconds uint32_t typeIndex; ///< Index of datatype } PuglDataEvent; /** @} */ /** View event. This is a union of all event types. The type must be checked to determine which fields are safe to access. A pointer to PuglEvent can either be cast to the appropriate type, or the union members used. The graphics system may only be accessed when handling certain events. The graphics context is active for #PUGL_REALIZE, #PUGL_UNREALIZE, #PUGL_CONFIGURE, and #PUGL_EXPOSE, but only enabled for drawing for #PUGL_EXPOSE. */ typedef union { PuglAnyEvent any; ///< Valid for all event types PuglEventType type; ///< Event type PuglButtonEvent button; ///< #PUGL_BUTTON_PRESS, #PUGL_BUTTON_RELEASE PuglConfigureEvent configure; ///< #PUGL_CONFIGURE PuglExposeEvent expose; ///< #PUGL_EXPOSE PuglKeyEvent key; ///< #PUGL_KEY_PRESS, #PUGL_KEY_RELEASE PuglTextEvent text; ///< #PUGL_TEXT PuglCrossingEvent crossing; ///< #PUGL_POINTER_IN, #PUGL_POINTER_OUT PuglMotionEvent motion; ///< #PUGL_MOTION PuglScrollEvent scroll; ///< #PUGL_SCROLL PuglFocusEvent focus; ///< #PUGL_FOCUS_IN, #PUGL_FOCUS_OUT PuglClientEvent client; ///< #PUGL_CLIENT PuglTimerEvent timer; ///< #PUGL_TIMER PuglDataOfferEvent offer; ///< #PUGL_DATA_OFFER PuglDataEvent data; ///< #PUGL_DATA } PuglEvent; /** @} @defgroup pugl_status Status Most functions return a status code which can be used to check for errors. @{ */ /// Return status code typedef enum { PUGL_SUCCESS, ///< Success PUGL_FAILURE, ///< Non-fatal failure PUGL_UNKNOWN_ERROR, ///< Unknown system error PUGL_BAD_BACKEND, ///< Invalid or missing backend PUGL_BAD_CONFIGURATION, ///< Invalid view configuration PUGL_BAD_PARAMETER, ///< Invalid parameter PUGL_BACKEND_FAILED, ///< Backend initialization failed PUGL_REGISTRATION_FAILED, ///< Class registration failed PUGL_REALIZE_FAILED, ///< System view realization failed PUGL_SET_FORMAT_FAILED, ///< Failed to set pixel format PUGL_CREATE_CONTEXT_FAILED, ///< Failed to create drawing context PUGL_UNSUPPORTED, ///< Unsupported operation PUGL_NO_MEMORY, ///< Failed to allocate memory } PuglStatus; /// Return a string describing a status code PUGL_CONST_API const char* puglStrerror(PuglStatus status); /** @} @defgroup pugl_world World The top-level context of a Pugl application or plugin. The world contains all library-wide state. There is no static data in Pugl, so it is safe to use multiple worlds in a single process. This is to facilitate plugins or other situations where it is not possible to share a world, but a single world should be shared for all views where possible. @{ */ /** The "world" of application state. The world represents everything that is not associated with a particular view. Several worlds can be created in a single process, but code using different worlds must be isolated so they are never mixed. Views are strongly associated with the world they were created in. */ typedef struct PuglWorldImpl PuglWorld; /// Handle for the world's opaque user data typedef void* PuglWorldHandle; /// The type of a World typedef enum { PUGL_PROGRAM, ///< Top-level application PUGL_MODULE ///< Plugin or module within a larger application } PuglWorldType; /// World flags typedef enum { /** Set up support for threads if necessary. X11: Calls XInitThreads() which is required for some drivers. */ PUGL_WORLD_THREADS = 1U << 0U } PuglWorldFlag; /// Bitwise OR of #PuglWorldFlag values typedef uint32_t PuglWorldFlags; /** Create a new world. @param type The type, which dictates what this world is responsible for. @param flags Flags to control world features. @return A new world, which must be later freed with puglFreeWorld(). */ PUGL_MALLOC_API PuglWorld* puglNewWorld(PuglWorldType type, PuglWorldFlags flags); /// Free a world allocated with puglNewWorld() PUGL_API void puglFreeWorld(PuglWorld* world); /** Set the user data for the world. This is usually a pointer to a struct that contains all the state which must be accessed by several views. The handle is opaque to Pugl and is not interpreted in any way. */ PUGL_API void puglSetWorldHandle(PuglWorld* world, PuglWorldHandle handle); /// Get the user data for the world PUGL_API PuglWorldHandle puglGetWorldHandle(PuglWorld* world); /** Return a pointer to the native handle of the world. X11: Returns a pointer to the `Display`. MacOS: Returns a pointer to the `NSApplication`. Windows: Returns the `HMODULE` of the calling process. */ PUGL_API void* puglGetNativeWorld(PuglWorld* world); /** Set the class name of the application. This is a stable identifier for the application, used as the window class/instance name on X11 and Windows. It is not displayed to the user, but can be used in scripts and by window managers, so it should be the same for every instance of the application, but different from other applications. */ PUGL_API PuglStatus puglSetClassName(PuglWorld* world, const char* name); /// Get the class name of the application, or null PUGL_API const char* puglGetClassName(const PuglWorld* world); /** Return the time in seconds. This is a monotonically increasing clock with high resolution. The returned time is only useful to compare against other times returned by this function, its absolute value has no meaning. */ PUGL_API double puglGetTime(const PuglWorld* world); /** Update by processing events from the window system. This function is a single iteration of the main loop, and should be called repeatedly to update all views. If `timeout` is zero, then this function will not block. Plugins should always use a timeout of zero to avoid blocking the host. If a positive `timeout` is given, then events will be processed for that amount of time, starting from when this function was called. If a negative `timeout` is given, this function will block indefinitely until an event occurs. For continuously animating programs, a timeout that is a reasonable fraction of the ideal frame period should be used, to minimize input latency by ensuring that as many input events are consumed as possible before drawing. @return #PUGL_SUCCESS if events are read, #PUGL_FAILURE if no events are read, or an error. */ PUGL_API PuglStatus puglUpdate(PuglWorld* world, double timeout); /** @} @defgroup pugl_view View A drawable region that receives events. A view can be thought of as a window, but does not necessarily correspond to a top-level window in a desktop environment. For example, a view can be embedded in some other window, or represent an embedded system where there is no concept of multiple windows at all. @{ */ /// A drawable region that receives events typedef struct PuglViewImpl PuglView; /** A graphics backend. The backend dictates how graphics are set up for a view, and how drawing is performed. A backend must be set by calling puglSetBackend() before realising a view. If you are using a local copy of Pugl, it is possible to implement a custom backend. See the definition of `PuglBackendImpl` in the source code for details. */ typedef struct PuglBackendImpl PuglBackend; /** A native view handle. X11: This is a `Window`. MacOS: This is a pointer to an `NSView*`. Windows: This is a `HWND`. */ typedef uintptr_t PuglNativeView; /// Handle for a view's opaque user data typedef void* PuglHandle; /// A hint for configuring a view typedef enum { PUGL_CONTEXT_API, ///< OpenGL render API (GL/GLES) PUGL_CONTEXT_VERSION_MAJOR, ///< OpenGL context major version PUGL_CONTEXT_VERSION_MINOR, ///< OpenGL context minor version PUGL_CONTEXT_PROFILE, ///< OpenGL context profile (core/compatibility) PUGL_CONTEXT_DEBUG, ///< OpenGL context debugging enabled PUGL_RED_BITS, ///< Number of bits for red channel PUGL_GREEN_BITS, ///< Number of bits for green channel PUGL_BLUE_BITS, ///< Number of bits for blue channel PUGL_ALPHA_BITS, ///< Number of bits for alpha channel PUGL_DEPTH_BITS, ///< Number of bits for depth buffer PUGL_STENCIL_BITS, ///< Number of bits for stencil buffer PUGL_SAMPLE_BUFFERS, ///< Number of sample buffers (AA) PUGL_SAMPLES, ///< Number of samples per pixel (AA) PUGL_DOUBLE_BUFFER, ///< True if double buffering should be used PUGL_SWAP_INTERVAL, ///< Number of frames between buffer swaps PUGL_RESIZABLE, ///< True if view should be resizable PUGL_IGNORE_KEY_REPEAT, ///< True if key repeat events are ignored PUGL_REFRESH_RATE, ///< Refresh rate in Hz PUGL_VIEW_TYPE, ///< View type (a #PuglViewType) } PuglViewHint; /// The number of #PuglViewHint values #define PUGL_NUM_VIEW_HINTS ((unsigned)PUGL_VIEW_TYPE + 1U) /// A special view hint value typedef enum { PUGL_DONT_CARE = -1, ///< Generic trinary: Use best default PUGL_FALSE = 0, ///< Generic trinary: Explicitly false PUGL_TRUE = 1, ///< Generic trinary: Explicitly true PUGL_OPENGL_API = 2, ///< For #PUGL_CONTEXT_API PUGL_OPENGL_ES_API = 3, ///< For #PUGL_CONTEXT_API PUGL_OPENGL_CORE_PROFILE = 4, ///< For #PUGL_CONTEXT_PROFILE PUGL_OPENGL_COMPATIBILITY_PROFILE = 5, ///< For #PUGL_CONTEXT_PROFILE } PuglViewHintValue; /// View type typedef enum { PUGL_VIEW_TYPE_NORMAL, ///< A normal top-level window PUGL_VIEW_TYPE_UTILITY, ///< A utility window like a palette or toolbox PUGL_VIEW_TYPE_DIALOG, ///< A dialog window } PuglViewType; /** A hint for configuring/constraining the size of a view. The system will attempt to make the view's window adhere to these, but they are suggestions, not hard constraints. Applications should handle any view size gracefully. */ typedef enum { PUGL_DEFAULT_SIZE, ///< Default size PUGL_MIN_SIZE, ///< Minimum size PUGL_MAX_SIZE, ///< Maximum size /** Fixed aspect ratio. If set, the view's size should be constrained to this aspect ratio. Mutually exclusive with #PUGL_MIN_ASPECT and #PUGL_MAX_ASPECT. */ PUGL_FIXED_ASPECT, /** Minimum aspect ratio. If set, the view's size should be constrained to an aspect ratio no lower than this. Mutually exclusive with #PUGL_FIXED_ASPECT. */ PUGL_MIN_ASPECT, /** Maximum aspect ratio. If set, the view's size should be constrained to an aspect ratio no higher than this. Mutually exclusive with #PUGL_FIXED_ASPECT. */ PUGL_MAX_ASPECT } PuglSizeHint; /// The number of #PuglSizeHint values #define PUGL_NUM_SIZE_HINTS ((unsigned)PUGL_MAX_ASPECT + 1U) /// A function called when an event occurs typedef PuglStatus (*PuglEventFunc)(PuglView* view, const PuglEvent* event); /** @defgroup pugl_setup Setup Functions for creating and destroying a view. @{ */ /** Create a new view. A newly created view does not correspond to a real system view or window. It must first be configured, then the system view can be created with puglRealize(). */ PUGL_MALLOC_API PuglView* puglNewView(PuglWorld* world); /// Free a view created with puglNewView() PUGL_API void puglFreeView(PuglView* view); /// Return the world that `view` is a part of PUGL_API PuglWorld* puglGetWorld(PuglView* view); /** Set the user data for a view. This is usually a pointer to a struct that contains all the state which must be accessed by a view. Everything needed to process events should be stored here, not in static variables. The handle is opaque to Pugl and is not interpreted in any way. */ PUGL_API void puglSetHandle(PuglView* view, PuglHandle handle); /// Get the user data for a view PUGL_API PuglHandle puglGetHandle(PuglView* view); /** Set the graphics backend to use for a view. This must be called once to set the graphics backend before calling puglRealize(). Pugl includes the following backends: - puglCairoBackend() - puglGlBackend() - puglVulkanBackend() Note that backends are modular and not compiled into the main Pugl library to avoid unnecessary dependencies. To use a particular backend, applications must link against the appropriate backend library, or be sure to compile in the appropriate code if using a local copy of Pugl. */ PUGL_API PuglStatus puglSetBackend(PuglView* view, const PuglBackend* backend); /// Return the graphics backend used by a view const PuglBackend* puglGetBackend(const PuglView* view); /// Set the function to call when an event occurs PUGL_API PuglStatus puglSetEventFunc(PuglView* view, PuglEventFunc eventFunc); /** Set a hint to configure view properties. This only has an effect when called before puglRealize(). */ PUGL_API PuglStatus puglSetViewHint(PuglView* view, PuglViewHint hint, int value); /** Get the value for a view hint. If the view has been realized, this can be used to get the actual value of a hint which was initially set to PUGL_DONT_CARE, or has been adjusted from the suggested value. */ PUGL_API int puglGetViewHint(const PuglView* view, PuglViewHint hint); /** Return the scale factor of the view. This factor describe how large UI elements (especially text) should be compared to "normal". For example, 2.0 means the UI should be drawn twice as large. "Normal" is loosely defined, but means a good size on a "standard DPI" display (around 96 DPI). In other words, the scale 1.0 should have text that is reasonably sized on a 96 DPI display, and the scale 2.0 should have text twice that large. */ PUGL_API double puglGetScaleFactor(const PuglView* view); /** @} @defgroup pugl_frame Frame Functions for working with the position and size of a view. @{ */ /** Get the current position and size of the view. The position is in screen coordinates with an upper left origin. */ PUGL_API PuglRect puglGetFrame(const PuglView* view); /** Set the current position and size of the view. The position is in screen coordinates with an upper left origin. @return #PUGL_UNKNOWN_ERROR on failure, in which case the view frame is unchanged. */ PUGL_API PuglStatus puglSetFrame(PuglView* view, PuglRect frame); /** Set the current position of the view. @return #PUGL_UNKNOWN_ERROR on failure, in which case the view frame is unchanged. */ PUGL_API PuglStatus puglSetPosition(PuglView* view, int x, int y); /** Set the current size of the view. @return #PUGL_UNKNOWN_ERROR on failure, in which case the view frame is unchanged. */ PUGL_API PuglStatus puglSetSize(PuglView* view, unsigned width, unsigned height); /** Set a size hint for the view. This can be used to set the default, minimum, and maximum size of a view, as well as the supported range of aspect ratios. This should be called before puglRealize() so the initial window for the view can be configured correctly. @return #PUGL_UNKNOWN_ERROR on failure, but always succeeds if the view is not yet realized. */ PUGL_API PuglStatus puglSetSizeHint(PuglView* view, PuglSizeHint hint, PuglSpan width, PuglSpan height); /** @} @defgroup pugl_window Window Functions to control the top-level window of a view. @{ */ /** Set the title of the window. This only makes sense for non-embedded views that will have a corresponding top-level window, and sets the title, typically displayed in the title bar or in window switchers. */ PUGL_API PuglStatus puglSetWindowTitle(PuglView* view, const char* title); /// Return the title of the window, or null PUGL_API const char* puglGetWindowTitle(const PuglView* view); /** Set the parent window for embedding a view in an existing window. This must be called before puglRealize(), reparenting is not supported. */ PUGL_API PuglStatus puglSetParentWindow(PuglView* view, PuglNativeView parent); /// Return the parent window this view is embedded in, or null PUGL_API PuglNativeView puglGetParentWindow(const PuglView* view); /** Set the transient parent of the window. Set this for transient children like dialogs, to have them properly associated with their parent window. This should be called before puglRealize(). A view can either have a parent (for embedding) or a transient parent (for top-level windows like dialogs), but not both. */ PUGL_API PuglStatus puglSetTransientParent(PuglView* view, PuglNativeView parent); /** Return the transient parent of the window. @return The native handle to the window this view is a transient child of, or null. */ PUGL_API PuglNativeView puglGetTransientParent(const PuglView* view); /** Realize a view by creating a corresponding system view or window. After this call, the (initially invisible) underlying system view exists and can be accessed with puglGetNativeView(). The view should be fully configured using the above functions before this is called. This function may only be called once per view. */ PUGL_API PuglStatus puglRealize(PuglView* view); /** Unrealize a view by destroying the corresponding system view or window. This is the inverse of puglRealize(). After this call, the view no longer corresponds to a real system view, and can be realized again later. */ PUGL_API PuglStatus puglUnrealize(PuglView* view); /// A command to control the behaviour of puglShow() typedef enum { /** Realize and show the window without intentionally raising it. This will weakly "show" the window but without making any effort to raise it. Depending on the platform or system configuration, the window may be raised above some others regardless. */ PUGL_SHOW_PASSIVE, /** Raise the window to the top of the application's stack. This is the normal "well-behaved" way to show and raise the window, which should be used in most cases. */ PUGL_SHOW_RAISE, /** Aggressively force the window to be raised to the top. This will attempt to raise the window to the top, even if this isn't the active application, or if doing so would otherwise go against the platform's guidelines. This generally shouldn't be used, and isn't guaranteed to work. On modern Windows systems, the active application must explicitly grant permission for others to steal the foreground from it. */ PUGL_SHOW_FORCE_RAISE, } PuglShowCommand; /** Show the view. If the view has not yet been realized, the first call to this function will do so automatically. If the view is currently hidden, it will be shown and possibly raised to the top depending on the platform. */ PUGL_API PuglStatus puglShow(PuglView* view, PuglShowCommand command); /// Hide the current window PUGL_API PuglStatus puglHide(PuglView* view); /** Set a view state, if supported by the system. This can be used to manipulate the window into various special states, but note that not all states are supported on all systems. This function may return failure or an error if the platform implementation doesn't "understand" how to set the given style, but the return value here can't be used to determine if the state has actually been set. Any changes to the actual state of the view will arrive in later configure events. */ PUGL_API PuglStatus puglSetViewStyle(PuglView* view, PuglViewStyleFlags flags); /** Return true if the view currently has a state flag set. The result is determined based on the state announced in the last configure event. */ PUGL_API PuglViewStyleFlags puglGetViewStyle(const PuglView* view); /// Return true iff the view is currently visible PUGL_API bool puglGetVisible(const PuglView* view); /// Return the native window handle PUGL_API PuglNativeView puglGetNativeView(PuglView* view); /** @} @defgroup pugl_graphics Graphics Functions for working with the graphics context and scheduling redisplays. @{ */ /** Get the graphics context. This is a backend-specific context used for drawing if the backend graphics API requires one. It is only available during an expose. Cairo: Returns a pointer to a [cairo_t](http://www.cairographics.org/manual/cairo-cairo-t.html). All other backends: returns null. */ PUGL_API void* puglGetContext(PuglView* view); /** Request a redisplay for the entire view. This will cause an expose event to be dispatched later. If called from within the event handler, the expose should arrive at the end of the current event loop iteration, though this is not strictly guaranteed on all platforms. If called elsewhere, an expose will be enqueued to be processed in the next event loop iteration. */ PUGL_API PuglStatus puglPostRedisplay(PuglView* view); /** Request a redisplay of the given rectangle within the view. This has the same semantics as puglPostRedisplay(), but allows giving a precise region for redrawing only a portion of the view. */ PUGL_API PuglStatus puglPostRedisplayRect(PuglView* view, PuglRect rect); /** @} @defgroup pugl_interaction Interaction Functions for interacting with the user and window system. @{ */ /** A mouse cursor type. This is a portable subset of mouse cursors that exist on X11, MacOS, and Windows. */ typedef enum { PUGL_CURSOR_ARROW, ///< Default pointing arrow PUGL_CURSOR_CARET, ///< Caret (I-Beam) for text entry PUGL_CURSOR_CROSSHAIR, ///< Cross-hair PUGL_CURSOR_HAND, ///< Hand with a pointing finger PUGL_CURSOR_NO, ///< Operation not allowed PUGL_CURSOR_LEFT_RIGHT, ///< Left/right arrow for horizontal resize PUGL_CURSOR_UP_DOWN, ///< Up/down arrow for vertical resize PUGL_CURSOR_UP_LEFT_DOWN_RIGHT, ///< Diagonal arrow for down/right resize PUGL_CURSOR_UP_RIGHT_DOWN_LEFT, ///< Diagonal arrow for down/left resize } PuglCursor; /// The number of #PuglCursor values #define PUGL_NUM_CURSORS ((unsigned)PUGL_CURSOR_UP_RIGHT_DOWN_LEFT + 1U) /** Grab the keyboard input focus. Note that this will fail if the view is not mapped and so should not, for example, be called immediately after puglShow(). @return #PUGL_SUCCESS if the focus was successfully grabbed, or an error. */ PUGL_API PuglStatus puglGrabFocus(PuglView* view); /// Return whether `view` has the keyboard input focus PUGL_API bool puglHasFocus(const PuglView* view); /** Request data from the general copy/paste clipboard. A #PUGL_DATA_OFFER event will be sent if data is available. */ PUGL_API PuglStatus puglPaste(PuglView* view); /** Return the number of types available for the data in a clipboard. Returns zero if the clipboard is empty. */ PUGL_API uint32_t puglGetNumClipboardTypes(const PuglView* view); /** Return the identifier of a type available in a clipboard. This is usually a MIME type, but may also be another platform-specific type identifier. Applications must ignore any type they do not recognize. Returns null if `typeIndex` is out of bounds according to puglGetNumClipboardTypes(). */ PUGL_API const char* puglGetClipboardType(const PuglView* view, uint32_t typeIndex); /** Accept data offered from a clipboard. To accept data, this must be called while handling a #PUGL_DATA_OFFER event. Doing so will request the data from the source as the specified type. When the data is available, a #PUGL_DATA event will be sent to the view which can then retrieve the data with puglGetClipboard(). @param view The view. @param offer The data offer event. @param typeIndex The index of the type that the view will accept. This is the `typeIndex` argument to the call of puglGetClipboardType() that returned the accepted type. */ PUGL_API PuglStatus puglAcceptOffer(PuglView* view, const PuglDataOfferEvent* offer, uint32_t typeIndex); /** Set the clipboard contents. This sets the system clipboard contents, which can be retrieved with puglGetClipboard() or pasted into other applications. @param view The view. @param type The MIME type of the data, "text/plain" is assumed if `NULL`. @param data The data to copy to the clipboard. @param len The length of data in bytes (including terminator if necessary). */ PUGL_API PuglStatus puglSetClipboard(PuglView* view, const char* type, const void* data, size_t len); /** Get the clipboard contents. This gets the system clipboard contents, which may have been set with puglSetClipboard() or copied from another application. @param view The view. @param typeIndex Index of the data type to get the item as. @param[out] len Set to the length of the data in bytes. @return The clipboard contents, or null. */ PUGL_API const void* puglGetClipboard(PuglView* view, uint32_t typeIndex, size_t* len); /** Set the mouse cursor. This changes the system cursor that is displayed when the pointer is inside the view. May fail if setting the cursor is not supported on this system, for example if compiled on X11 without Xcursor support. @return #PUGL_BAD_PARAMETER if the given cursor is invalid, #PUGL_FAILURE if the cursor is known but loading it system fails. */ PUGL_API PuglStatus puglSetCursor(PuglView* view, PuglCursor cursor); /** Activate a repeating timer event. This starts a timer which will send a #PuglTimerEvent to `view` every `timeout` seconds. This can be used to perform some action in a view at a regular interval with relatively low frequency. Note that the frequency of timer events may be limited by how often puglUpdate() is called. If the given timer already exists, it is replaced. @param view The view to begin sending #PUGL_TIMER events to. @param id The identifier for this timer. This is an application-specific ID that should be a low number, typically the value of a constant or `enum` that starts from 0. There is a platform-specific limit to the number of supported timers, and overhead associated with each, so applications should create only a few timers and perform several tasks in one if necessary. @param timeout The period, in seconds, of this timer. This is not guaranteed to have a resolution better than 10ms (the maximum timer resolution on Windows) and may be rounded up if it is too short. On X11 and MacOS, a resolution of about 1ms can usually be relied on. @return #PUGL_FAILURE if timers are not supported by the system, #PUGL_UNKNOWN_ERROR if setting the timer failed. */ PUGL_API PuglStatus puglStartTimer(PuglView* view, uintptr_t id, double timeout); /** Stop an active timer. @param view The view that the timer is set for. @param id The ID previously passed to puglStartTimer(). @return #PUGL_FAILURE if timers are not supported by this system, #PUGL_UNKNOWN_ERROR if stopping the timer failed. */ PUGL_API PuglStatus puglStopTimer(PuglView* view, uintptr_t id); /** Send an event to a view via the window system. If supported, the event will be delivered to the view via the event loop like other events. Note that this function only works for certain event types. Currently, only #PUGL_CLIENT events are supported on all platforms. X11: A #PUGL_EXPOSE event can be sent, which is similar to calling puglPostRedisplayRect(), but will always send a message to the X server, even when called in an event handler. @return #PUGL_UNSUPPORTED if sending events of this type is not supported, #PUGL_UNKNOWN_ERROR if sending the event failed. */ PUGL_API PuglStatus puglSendEvent(PuglView* view, const PuglEvent* event); /** @} */ #ifndef PUGL_DISABLE_DEPRECATED /** @} @defgroup pugl_deprecated Deprecated API @{ */ PUGL_DEPRECATED_BY("PuglRealizeEvent") typedef PuglRealizeEvent PuglCreateEvent; PUGL_DEPRECATED_BY("PuglUnrealizeEvent") typedef PuglUnrealizeEvent PuglDestroyEvent; PUGL_DEPRECATED_BY("PuglRealizeEvent") typedef PuglCreateEvent PuglEventCreate; PUGL_DEPRECATED_BY("PuglUnrealizeEvent") typedef PuglDestroyEvent PuglEventDestroy; PUGL_DEPRECATED_BY("PuglConfigureEvent") typedef PuglConfigureEvent PuglEventConfigure; PUGL_DEPRECATED_BY("PuglUpdateEvent") typedef PuglUpdateEvent PuglEventUpdate; PUGL_DEPRECATED_BY("PuglExposeEvent") typedef PuglExposeEvent PuglEventExpose; PUGL_DEPRECATED_BY("PuglCloseEvent") typedef PuglCloseEvent PuglEventClose; PUGL_DEPRECATED_BY("PuglFocusEvent") typedef PuglFocusEvent PuglEventFocus; PUGL_DEPRECATED_BY("PuglKeyEvent") typedef PuglKeyEvent PuglEventKey; PUGL_DEPRECATED_BY("PuglTextEvent") typedef PuglTextEvent PuglEventText; PUGL_DEPRECATED_BY("PuglCrossingEvent") typedef PuglCrossingEvent PuglEventCrossing; PUGL_DEPRECATED_BY("PuglButtonEvent") typedef PuglButtonEvent PuglEventButton; PUGL_DEPRECATED_BY("PuglMotionEvent") typedef PuglMotionEvent PuglEventMotion; PUGL_DEPRECATED_BY("PuglScrollEvent") typedef PuglScrollEvent PuglEventScroll; PUGL_DEPRECATED_BY("PuglClientEvent") typedef PuglClientEvent PuglEventClient; PUGL_DEPRECATED_BY("PuglTimerEvent") typedef PuglTimerEvent PuglEventTimer; PUGL_DEPRECATED_BY("PuglLoopEnterEvent") typedef PuglLoopEnterEvent PuglEventLoopEnter; PUGL_DEPRECATED_BY("PuglLoopLeaveEvent") typedef PuglLoopLeaveEvent PuglEventLoopLeave; /** A native window handle. X11: This is a `Window`. MacOS: This is a pointer to an `NSView*`. Windows: This is a `HWND`. */ PUGL_DEPRECATED_BY("PuglNativeView") typedef uintptr_t PuglNativeWindow; /** Create a Pugl application and view. To create a window, call the various puglInit* functions as necessary, then call puglRealize(). @deprecated Use puglNewApp() and puglNewView(). @param pargc Pointer to argument count (currently unused). @param argv Arguments (currently unused). @return A newly created view. */ static inline PUGL_DEPRECATED_BY("puglNewView") PuglView* puglInit(const int* pargc, char** argv) { (void)pargc; (void)argv; return puglNewView(puglNewWorld(PUGL_MODULE, 0)); } /** Destroy an app and view created with `puglInit()`. @deprecated Use puglFreeApp() and puglFreeView(). */ static inline PUGL_DEPRECATED_BY("puglFreeView") void puglDestroy(PuglView* view) { PuglWorld* const world = puglGetWorld(view); puglFreeView(view); puglFreeWorld(world); } /** Set the window class name before creating a window. */ static inline PUGL_DEPRECATED_BY("puglSetClassName") void puglInitWindowClass(PuglView* view, const char* name) { puglSetClassName(puglGetWorld(view), name); } /** Set the window size before creating a window. @deprecated Use puglSetFrame(). */ static inline PUGL_DEPRECATED_BY("puglSetFrame") void puglInitWindowSize(PuglView* view, int width, int height) { PuglRect frame = puglGetFrame(view); frame.width = (PuglSpan)width; frame.height = (PuglSpan)height; puglSetFrame(view, frame); } /** Set the minimum window size before creating a window. */ static inline PUGL_DEPRECATED_BY("puglSetMinSize") void puglInitWindowMinSize(PuglView* view, int width, int height) { puglSetSizeHint(view, PUGL_MIN_SIZE, (PuglSpan)width, (PuglSpan)height); } /** Set the window aspect ratio range before creating a window. The x and y values here represent a ratio of width to height. To set a fixed aspect ratio, set the minimum and maximum values to the same ratio. Note that setting different minimum and maximum constraints does not currently work on MacOS (the minimum is used), so only setting a fixed aspect ratio works properly across all platforms. */ static inline PUGL_DEPRECATED_BY("puglSetAspectRatio") void puglInitWindowAspectRatio(PuglView* view, int minX, int minY, int maxX, int maxY) { puglSetSizeHint(view, PUGL_MIN_ASPECT, (PuglSpan)minX, (PuglSpan)minY); puglSetSizeHint(view, PUGL_MAX_ASPECT, (PuglSpan)maxX, (PuglSpan)maxY); } /** Set transient parent before creating a window. On X11, parent must be a Window. On OSX, parent must be an NSView*. */ static inline PUGL_DEPRECATED_BY("puglSetTransientParent") void puglInitTransientFor(PuglView* view, uintptr_t parent) { puglSetTransientParent(view, (PuglNativeWindow)parent); } /** Set transient parent before creating a window. @deprecated Use puglSetTransientParent(). */ static inline PUGL_DEPRECATED_BY("puglSetTransientParent") PuglStatus puglSetTransientFor(PuglView* view, uintptr_t parent) { return puglSetTransientParent(view, (PuglNativeWindow)parent); } /** Enable or disable resizing before creating a window. @deprecated Use puglSetViewHint() with #PUGL_RESIZABLE. */ static inline PUGL_DEPRECATED_BY("puglSetViewHint") void puglInitResizable(PuglView* view, bool resizable) { puglSetViewHint(view, PUGL_RESIZABLE, resizable); } /** Get the current size of the view. @deprecated Use puglGetFrame(). */ static inline PUGL_DEPRECATED_BY("puglGetFrame") void puglGetSize(PuglView* view, int* width, int* height) { const PuglRect frame = puglGetFrame(view); *width = (int)frame.width; *height = (int)frame.height; } /** Ignore synthetic repeated key events. @deprecated Use puglSetViewHint() with #PUGL_IGNORE_KEY_REPEAT. */ static inline PUGL_DEPRECATED_BY("puglSetViewHint") void puglIgnoreKeyRepeat(PuglView* view, bool ignore) { puglSetViewHint(view, PUGL_IGNORE_KEY_REPEAT, ignore); } /** Set a hint before creating a window. @deprecated Use puglSetWindowHint(). */ static inline PUGL_DEPRECATED_BY("puglSetViewHint") void puglInitWindowHint(PuglView* view, PuglViewHint hint, int value) { puglSetViewHint(view, hint, value); } /** Set the parent window before creating a window (for embedding). @deprecated Use puglSetWindowParent(). */ static inline PUGL_DEPRECATED_BY("puglSetParentWindow") void puglInitWindowParent(PuglView* view, PuglNativeWindow parent) { puglSetParentWindow(view, parent); } /** Set the graphics backend to use. @deprecated Use puglSetBackend(). */ static inline PUGL_DEPRECATED_BY("puglSetBackend") int puglInitBackend(PuglView* view, const PuglBackend* backend) { return (int)puglSetBackend(view, backend); } /** Realize a view by creating a corresponding system view or window. The view should be fully configured using the above functions before this is called. This function may only be called once per view. @deprecated Use puglRealize(), or just show the view. */ static inline PUGL_DEPRECATED_BY("puglRealize") PuglStatus puglCreateWindow(PuglView* view, const char* title) { puglSetWindowTitle(view, title); return puglRealize(view); } /** Block and wait for an event to be ready. This can be used in a loop to only process events via puglProcessEvents when necessary. This function will block indefinitely if no events are available, so is not appropriate for use in programs that need to perform regular updates (e.g. animation). @deprecated Use puglPollEvents(). */ PUGL_API PUGL_DEPRECATED_BY("puglPollEvents") PuglStatus puglWaitForEvent(PuglView* view); /** Process all pending window events. This handles input events as well as rendering, so it should be called regularly and rapidly enough to keep the UI responsive. This function does not block if no events are pending. @deprecated Use puglDispatchEvents(). */ PUGL_API PUGL_DEPRECATED_BY("puglDispatchEvents") PuglStatus puglProcessEvents(PuglView* view); /** Poll for events that are ready to be processed. This polls for events that are ready for any view in the world, potentially blocking depending on `timeout`. @param world The world to poll for events. @param timeout Maximum time to wait, in seconds. If zero, the call returns immediately, if negative, the call blocks indefinitely. @return #PUGL_SUCCESS if events are read, #PUGL_FAILURE if not, or an error. @deprecated Use puglUpdate(). */ static inline PUGL_DEPRECATED_BY("puglUpdate") PuglStatus puglPollEvents(PuglWorld* world, double timeout) { return puglUpdate(world, timeout); } /** Dispatch any pending events to views. This processes all pending events, dispatching them to the appropriate views. View event handlers will be called in the scope of this call. This function does not block, if no events are pending then it will return immediately. @deprecated Use puglUpdate(). */ static inline PUGL_DEPRECATED_BY("puglUpdate") PuglStatus puglDispatchEvents(PuglWorld* world) { return puglUpdate(world, 0.0); } static inline PUGL_DEPRECATED_BY("puglShow") PuglStatus puglShowWindow(PuglView* view) { return puglShow(view); } static inline PUGL_DEPRECATED_BY("puglHide") PuglStatus puglHideWindow(PuglView* view) { return puglHide(view); } /** Set the default size of the view. This should be called before puglRealize() to set the default size of the view, which will be the initial size of the window if this is a top level view. @return #PUGL_UNKNOWN_ERROR on failure, but always succeeds if the view is not yet realized. */ static inline PUGL_DEPRECATED_BY("puglSetSizeHint") PuglStatus puglSetDefaultSize(PuglView* view, int width, int height) { return puglSetSizeHint( view, PUGL_DEFAULT_SIZE, (PuglSpan)width, (PuglSpan)height); } /** Set the minimum size of the view. If an initial minimum size is known, this should be called before puglRealize() to avoid stutter, though it can be called afterwards as well. @return #PUGL_UNKNOWN_ERROR on failure, but always succeeds if the view is not yet realized. */ static inline PUGL_DEPRECATED_BY("puglSetSizeHint") PuglStatus puglSetMinSize(PuglView* view, int width, int height) { return puglSetSizeHint( view, PUGL_MIN_SIZE, (PuglSpan)width, (PuglSpan)height); } /** Set the maximum size of the view. If an initial maximum size is known, this should be called before puglRealize() to avoid stutter, though it can be called afterwards as well. @return #PUGL_UNKNOWN_ERROR on failure, but always succeeds if the view is not yet realized. */ static inline PUGL_DEPRECATED_BY("puglSetSizeHint") PuglStatus puglSetMaxSize(PuglView* view, int width, int height) { return puglSetSizeHint( view, PUGL_MAX_SIZE, (PuglSpan)width, (PuglSpan)height); } /** Set the view aspect ratio range. The x and y values here represent a ratio of width to height. To set a fixed aspect ratio, set the minimum and maximum values to the same ratio. Note that setting different minimum and maximum constraints does not currently work on MacOS (the minimum is used), so only setting a fixed aspect ratio works properly across all platforms. If an initial aspect ratio is known, this should be called before puglRealize() to avoid stutter, though it can be called afterwards as well. @return #PUGL_UNKNOWN_ERROR on failure, but always succeeds if the view is not yet realized. */ static inline PUGL_DEPRECATED_BY("puglSetSizeHint") PuglStatus puglSetAspectRatio(PuglView* view, int minX, int minY, int maxX, int maxY) { const PuglStatus st0 = puglSetSizeHint(view, PUGL_MIN_ASPECT, (PuglSpan)minX, (PuglSpan)minY); const PuglStatus st1 = puglSetSizeHint(view, PUGL_MAX_ASPECT, (PuglSpan)maxX, (PuglSpan)maxY); return st0 ? st0 : st1; } /// Return the native window handle static inline PUGL_DEPRECATED_BY("puglGetNativeView") PuglNativeView puglGetNativeWindow(PuglView* view) { return puglGetNativeView(view); } /** Request user attention. This hints to the system that the window or application requires attention from the user. The exact effect depends on the platform, but is usually something like a flashing task bar entry or bouncing application icon. */ static inline PUGL_DEPRECATED_BY("puglSetViewStyle") PuglStatus puglRequestAttention(PuglView* view) { return puglSetViewStyle(view, puglGetViewStyle(view) | PUGL_VIEW_STYLE_DEMANDING); } #endif // PUGL_DISABLE_DEPRECATED /** @} @} */ PUGL_END_DECLS #endif // PUGL_PUGL_H