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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
/*
* @file src/gwin/class_gwin.h
* @brief GWIN Graphic window subsystem header file.
*
* @defgroup Internal Internal
* @ingroup GWIN
*
* @note These definitions are normally not used by an application program. They are useful
* only if you want to create your own custom GWIN window or widget.
* @note To access these definitions you must include "gwin/class_gwin.h" in your source file.
*
* @{
*/
#ifndef _CLASS_GWIN_H
#define _CLASS_GWIN_H
#if GFX_USE_GWIN || defined(__DOXYGEN__)
/**
* @brief The predefined flags for a Window
* @{
*/
#define GWIN_FIRST_CONTROL_FLAG 0x00000001 // @< 8 bits free for the control to use
#define GWIN_FLG_VISIBLE 0x00000100 // @< The window is "visible"
#define GWIN_FLG_SYSVISIBLE 0x00000200 // @< The window is visible after parents are tested
#define GWIN_FLG_ENABLED 0x00000400 // @< The window is "enabled"
#define GWIN_FLG_SYSENABLED 0x00000800 // @< The window is enabled after parents are tested
#define GWIN_FLG_DYNAMIC 0x00001000 // @< The GWIN structure is allocated
#define GWIN_FLG_ALLOCTXT 0x00002000 // @< The text/label is allocated
#define GWIN_FLG_NEEDREDRAW 0x00004000 // @< Redraw is needed but has been delayed
#define GWIN_FLG_BGREDRAW 0x00008000 // @< On redraw, if not visible redraw the revealed under-side
#define GWIN_FLG_SUPERMASK 0x000F0000 // @< The bit mask to leave just the window superclass type
#define GWIN_FLG_WIDGET 0x00010000 // @< This is a widget
#define GWIN_FLG_CONTAINER 0x00020000 // @< This is a container
#define GWIN_FLG_MINIMIZED 0x00100000 // @< The window is minimized
#define GWIN_FLG_MAXIMIZED 0x00200000 // @< The window is maximized
#define GWIN_FLG_MOUSECAPTURE 0x00400000 // @< The window has captured the mouse
#define GWIN_FIRST_WM_FLAG 0x01000000 // @< 8 bits free for the window manager to use
/** @} */
/**
* @brief The Virtual Method Table for a GWIN window
* @{
*/
typedef struct gwinVMT {
const char * classname; // @< The GWIN classname (mandatory)
size_t size; // @< The size of the class object
void (*Destroy) (GWindowObject *gh); // @< The GWIN destroy function (optional)
void (*Redraw) (GWindowObject *gh); // @< The GWIN redraw routine (optional)
void (*AfterClear) (GWindowObject *gh); // @< The GWIN after-clear function (optional)
} gwinVMT;
/** @} */
#if GWIN_NEED_WIDGET || defined(__DOXYGEN__)
/**
* @brief An toggle/dial instance is not being used
*/
#define GWIDGET_NO_INSTANCE ((uint16_t)-1)
/**
* @brief The source handle that widgets use when sending events
*/
#define GWIDGET_SOURCE ((GSourceHandle)(void *)_gwidgetCreate)
/**
* @brief The Virtual Method Table for a widget
* @note A widget must have a destroy function. Either use @p _gwidgetDestroy() or use your own function
* which internally calls @p _gwidgetDestroy().
* @note A widget must have a redraw function. Use @p _gwidgetRedraw().
* @note If toggleroles != 0, ToggleAssign(), ToggleGet() and one or both of ToggleOff() and ToggleOn() must be specified.
* @note If dialroles != 0, DialAssign(), DialGet() and DialMove() must be specified.
* @{
*/
typedef struct gwidgetVMT {
struct gwinVMT g; // @< This is still a GWIN
void (*DefaultDraw) (GWidgetObject *gw, void *param); // @< The default drawing routine (mandatory)
#if GINPUT_NEED_MOUSE
struct {
void (*MouseDown) (GWidgetObject *gw, coord_t x, coord_t y); // @< Process mouse down events (optional)
void (*MouseUp) (GWidgetObject *gw, coord_t x, coord_t y); // @< Process mouse up events (optional)
void (*MouseMove) (GWidgetObject *gw, coord_t x, coord_t y); // @< Process mouse move events (optional)
};
#endif
#if GINPUT_NEED_TOGGLE
struct {
uint16_t toggleroles; // @< The roles supported for toggles (0->toggleroles-1)
void (*ToggleAssign) (GWidgetObject *gw, uint16_t role, uint16_t instance); // @< Assign a toggle to a role (optional)
uint16_t (*ToggleGet) (GWidgetObject *gw, uint16_t role); // @< Return the instance for a particular role (optional)
void (*ToggleOff) (GWidgetObject *gw, uint16_t role); // @< Process toggle off events (optional)
void (*ToggleOn) (GWidgetObject *gw, uint16_t role); // @< Process toggle on events (optional)
};
#endif
#if GINPUT_NEED_TOGGLE
struct {
uint16_t dialroles; // @< The roles supported for dials (0->dialroles-1)
void (*DialAssign) (GWidgetObject *gw, uint16_t role, uint16_t instance); // @< Test the role and save the dial instance handle (optional)
uint16_t (*DialGet) (GWidgetObject *gw, uint16_t role); // @< Return the instance for a particular role (optional)
void (*DialMove) (GWidgetObject *gw, uint16_t role, uint16_t value, uint16_t max); // @< Process dial move events (optional)
};
#endif
} gwidgetVMT;
/** @} */
#endif
#if GWIN_NEED_CONTAINERS || defined(__DOXYGEN__)
/**
* @brief The Virtual Method Table for a container
* @note A container must have a destroy function. Either use @p _gcontainerDestroy() or use your own function
* which internally calls @p _gcontainerDestroy().
* @note A container must have a gwin redraw function. Use @p _containerRedraw().
* @note If toggleroles != 0, ToggleAssign(), ToggleGet() and one or both of ToggleOff() and ToggleOn() must be specified.
* @note If dialroles != 0, DialAssign(), DialGet() and DialMove() must be specified.
* @{
*/
typedef struct gcontainerVMT {
gwidgetVMT gw;
coord_t (*LeftBorder) (GHandle gh); // @< The size of the left border (mandatory)
coord_t (*TopBorder) (GHandle gh); // @< The size of the top border (mandatory)
coord_t (*RightBorder) (GHandle gh); // @< The size of the right border (mandatory)
coord_t (*BottomBorder) (GHandle gh); // @< The size of the bottom border (mandatory)
void (*NotifyAdd) (GHandle gh, GHandle ghChild); // @< Notification that a child has been added (optional)
void (*NotifyDelete) (GHandle gh, GHandle ghChild); // @< Notification that a child has been deleted (optional)
} gcontainerVMT;
/** @} */
#endif
#if GWIN_NEED_WINDOWMANAGER || defined(__DOXYGEN__)
// @note There is only ever one instance of each GWindowManager type
typedef struct GWindowManager {
const struct gwmVMT *vmt;
} GWindowManager;
/**
* @brief The Virtual Method Table for a window manager
* @{
*/
typedef struct gwmVMT {
void (*Init) (void); // @< The window manager has just been set as the current window manager
void (*DeInit) (void); // @< The window manager has just been removed as the current window manager
bool_t (*Add) (GHandle gh, const GWindowInit *pInit); // @< A window has been added
void (*Delete) (GHandle gh); // @< A window has been deleted
void (*Redraw) (GHandle gh); // @< A window needs to be redraw (or undrawn)
void (*Size) (GHandle gh, coord_t w, coord_t h); // @< A window wants to be resized
void (*Move) (GHandle gh, coord_t x, coord_t y); // @< A window wants to be moved
void (*Raise) (GHandle gh); // @< A window wants to be on top
void (*MinMax) (GHandle gh, GWindowMinMax minmax); // @< A window wants to be minimized/maximised
} gwmVMT;
/** @} */
/**
* @brief The current window manager
*/
extern GWindowManager * _GWINwm;
#endif
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Initialise (and allocate if necessary) the base GWIN object
*
* @param[in] g The GDisplay to use for this window
* @param[in] pgw The GWindowObject structure. If NULL one is allocated from the heap
* @param[in] pInit The user initialization parameters
* @param[in] vmt The virtual method table for the GWIN object
* @param[in] flags The default flags to use
*
* @return The GHandle of the created window
*
* @notapi
*/
GHandle _gwindowCreate(GDisplay *g, GWindowObject *pgw, const GWindowInit *pInit, const gwinVMT *vmt, uint32_t flags);
/**
* @brief Redraw the window after a status change.
*
* @param[in] gh The widget to redraw
*
* @note Mark a window for redraw.
* @note The window will get redrawn at some later time.
* @note This call is designed to be fast and non-blocking
*
* @notapi
*/
void _gwinUpdate(GHandle gh);
/**
* @brief How to flush the redraws
* @notes REDRAW_WAIT - Wait for a drawing session to be available
* @notes REDRAW_NOWAIT - Do nothing if the drawing session is not available
* @note REDRAW_INSESSION - We are already in a drawing session
*/
typedef enum GRedrawMethod { REDRAW_WAIT, REDRAW_NOWAIT, REDRAW_INSESSION } GRedrawMethod;
/**
* @brief Flush any pending redraws in the system.
*
* @param[in] doWait Do we wait for the lock?
*
* @note This call will attempt to flush any pending redraws
* in the system. The doWait parameter tells this call
* how to handle someone already holding the drawing lock.
* If doWait is TRUE it waits to obtain the lock. If FALSE
* and the drawing lock is free then the redraw is done
* immediately. If the drawing lock was taken it will postpone the flush
* on the basis that someone else will do it for us later.
*
* @notapi
*/
void _gwinFlushRedraws(GRedrawMethod how);
/**
* @brief Obtain a drawing session
* @return TRUE if the drawing session was obtained, FALSE if the window is not visible
*
* @param[in] gh The window
*
* @note This function blocks until a drawing session is available if the window is visible
*/
bool_t _gwinDrawStart(GHandle gh);
/**
* @brief Release a drawing session
*
* @param[in] gh The window
*/
void _gwinDrawEnd(GHandle gh);
/**
* @brief Add a window to the window manager and set its position and size
* @return TRUE if successful
*
* @param[in] gh The window
* @param[in] pInit The window init structure
*/
bool_t _gwinWMAdd(GHandle gh, const GWindowInit *pInit);
#if GWIN_NEED_WIDGET || defined(__DOXYGEN__)
/**
* @brief Initialise (and allocate if necessary) the base Widget object
*
* @param[in] g The GDisplay to display this window on
* @param[in] pgw The GWidgetObject structure. If NULL one is allocated from the heap
* @param[in] pInit The user initialization parameters
* @param[in] vmt The virtual method table for the Widget object
*
* @return The GHandle of the created widget
*
* @notapi
*/
GHandle _gwidgetCreate(GDisplay *g, GWidgetObject *pgw, const GWidgetInit *pInit, const gwidgetVMT *vmt);
/**
* @brief Destroy the Widget object
*
* @param[in] gh The widget to destroy
*
* @notapi
*/
void _gwidgetDestroy(GHandle gh);
/**
* @brief Redraw the Widget object (VMT method only)
*
* @param[in] gh The widget to redraw
*
* @note Do not use this routine to update a widget after a status change.
* Use @p _gwinUpdate() instead. This routine should only be used in the
* VMT.
*
* @notapi
*/
void _gwidgetRedraw(GHandle gh);
#endif
#if GWIN_NEED_CONTAINERS || defined(__DOXYGEN__)
/**
* @brief Initialise (and allocate if necessary) the base Container object
*
* @param[in] g The GDisplay to display this window on
* @param[in] pgw The GContainerObject structure. If NULL one is allocated from the heap
* @param[in] pInit The user initialization parameters
* @param[in] vmt The virtual method table for the Container object
*
* @return The GHandle of the created widget
*
* @notapi
*/
GHandle _gcontainerCreate(GDisplay *g, GContainerObject *pgw, const GWidgetInit *pInit, const gcontainerVMT *vmt);
/**
* @brief Destroy the Container object
*
* @param[in] gh The container to destroy
*
* @notapi
*/
void _gcontainerDestroy(GHandle gh);
/**
* @brief Redraw the Container object (VMT method only)
*
* @param[in] gh The container to redraw
*
* @note Do not use this routine to update a container after a status change.
* Use @p _gwinUpdate() instead. This routine should only be used in the
* VMT.
*
* @notapi
*/
#define _gcontainerRedraw _gwidgetRedraw
#endif
#ifdef __cplusplus
}
#endif
#endif /* GFX_USE_GWIN */
#endif /* _CLASS_GWIN_H */
/** @} */