364 lines
13 KiB
C
364 lines
13 KiB
C
/*
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* This file is subject to the terms of the GFX License. If a copy of
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* the license was not distributed with this file, you can obtain one at:
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*
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* http://ugfx.org/license.html
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*/
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/*
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* @file src/gwin/gwin_class.h
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* @brief GWIN Graphic window subsystem header file.
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*
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* @defgroup Internal Internal
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* @ingroup GWIN
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*
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* @note These definitions are normally not used by an application program. They are useful
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* only if you want to create your own custom GWIN window or widget.
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* @note To access these definitions you must include "src/gwin/gwin_class.h" in your source file.
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*
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* @{
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*/
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#ifndef _CLASS_GWIN_H
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#define _CLASS_GWIN_H
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#if GFX_USE_GWIN || defined(__DOXYGEN__)
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#if defined(__KEIL__) || defined(__C51__)
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#pragma anon_unions
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#endif
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/**
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* @brief The predefined flags for a Window
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* @{
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*/
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#define GWIN_FIRST_CONTROL_FLAG 0x00000001 // @< 8 bits free for the control to use
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#define GWIN_LAST_CONTROL_FLAG 0x00000080 // @< 8 bits free for the control to use
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#define GWIN_FLG_VISIBLE 0x00000100 // @< The window is "visible"
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#define GWIN_FLG_SYSVISIBLE 0x00000200 // @< The window is visible after parents are tested
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#define GWIN_FLG_ENABLED 0x00000400 // @< The window is "enabled"
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#define GWIN_FLG_SYSENABLED 0x00000800 // @< The window is enabled after parents are tested
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#define GWIN_FLG_DYNAMIC 0x00001000 // @< The GWIN structure is allocated
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#define GWIN_FLG_ALLOCTXT 0x00002000 // @< The text/label is allocated
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#define GWIN_FLG_NEEDREDRAW 0x00004000 // @< Redraw is needed but has been delayed
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#define GWIN_FLG_BGREDRAW 0x00008000 // @< On redraw, if not visible redraw the revealed under-side
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#define GWIN_FLG_SUPERMASK 0x000F0000 // @< The bit mask to leave just the window superclass type
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#define GWIN_FLG_WIDGET 0x00010000 // @< This is a widget
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#define GWIN_FLG_CONTAINER 0x00020000 // @< This is a container
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#define GWIN_FLG_MINIMIZED 0x00100000 // @< The window is minimized
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#define GWIN_FLG_MAXIMIZED 0x00200000 // @< The window is maximized
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#define GWIN_FLG_MOUSECAPTURE 0x00400000 // @< The window has captured the mouse
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#define GWIN_FIRST_WM_FLAG 0x01000000 // @< 8 bits free for the window manager to use
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#define GWIN_LAST_WM_FLAG 0x80000000 // @< 8 bits free for the window manager to use
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/** @} */
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/**
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* @brief The Virtual Method Table for a GWIN window
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* @{
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*/
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typedef struct gwinVMT {
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const char * classname; // @< The GWIN classname (mandatory)
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size_t size; // @< The size of the class object
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void (*Destroy) (GWindowObject *gh); // @< The GWIN destroy function (optional)
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void (*Redraw) (GWindowObject *gh); // @< The GWIN redraw routine (optional)
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void (*AfterClear) (GWindowObject *gh); // @< The GWIN after-clear function (optional)
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} gwinVMT;
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/** @} */
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#if GWIN_NEED_WIDGET || defined(__DOXYGEN__)
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/**
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* @brief An toggle/dial instance is not being used
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*/
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#define GWIDGET_NO_INSTANCE ((uint16_t)-1)
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/**
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* @brief The source handle that widgets use when sending events
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*/
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#define GWIDGET_SOURCE ((GSourceHandle)(void *)_gwidgetCreate)
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/**
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* @brief The Virtual Method Table for a widget
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* @note A widget must have a destroy function. Either use @p _gwidgetDestroy() or use your own function
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* which internally calls @p _gwidgetDestroy().
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* @note A widget must have a redraw function. Use @p _gwidgetRedraw().
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* @note If toggleroles != 0, ToggleAssign(), ToggleGet() and one or both of ToggleOff() and ToggleOn() must be specified.
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* @note If dialroles != 0, DialAssign(), DialGet() and DialMove() must be specified.
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* @{
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*/
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typedef struct gwidgetVMT {
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struct gwinVMT g; // @< This is still a GWIN
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void (*DefaultDraw) (GWidgetObject *gw, void *param); // @< The default drawing routine (mandatory)
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#if GINPUT_NEED_MOUSE
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struct {
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void (*MouseDown) (GWidgetObject *gw, coord_t x, coord_t y); // @< Process mouse down events (optional)
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void (*MouseUp) (GWidgetObject *gw, coord_t x, coord_t y); // @< Process mouse up events (optional)
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void (*MouseMove) (GWidgetObject *gw, coord_t x, coord_t y); // @< Process mouse move events (optional)
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};
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#endif
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#if GINPUT_NEED_TOGGLE
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struct {
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uint16_t toggleroles; // @< The roles supported for toggles (0->toggleroles-1)
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void (*ToggleAssign) (GWidgetObject *gw, uint16_t role, uint16_t instance); // @< Assign a toggle to a role (optional)
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uint16_t (*ToggleGet) (GWidgetObject *gw, uint16_t role); // @< Return the instance for a particular role (optional)
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void (*ToggleOff) (GWidgetObject *gw, uint16_t role); // @< Process toggle off events (optional)
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void (*ToggleOn) (GWidgetObject *gw, uint16_t role); // @< Process toggle on events (optional)
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};
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#endif
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#if GINPUT_NEED_DIAL
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struct {
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uint16_t dialroles; // @< The roles supported for dials (0->dialroles-1)
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void (*DialAssign) (GWidgetObject *gw, uint16_t role, uint16_t instance); // @< Test the role and save the dial instance handle (optional)
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uint16_t (*DialGet) (GWidgetObject *gw, uint16_t role); // @< Return the instance for a particular role (optional)
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void (*DialMove) (GWidgetObject *gw, uint16_t role, uint16_t value, uint16_t max); // @< Process dial move events (optional)
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};
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#endif
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} gwidgetVMT;
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/** @} */
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#endif
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#if GWIN_NEED_CONTAINERS || defined(__DOXYGEN__)
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/**
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* @brief The Virtual Method Table for a container
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* @note A container must have a destroy function. Either use @p _gcontainerDestroy() or use your own function
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* which internally calls @p _gcontainerDestroy().
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* @note A container must have a gwin redraw function. Use @p _containerRedraw().
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* @note If toggleroles != 0, ToggleAssign(), ToggleGet() and one or both of ToggleOff() and ToggleOn() must be specified.
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* @note If dialroles != 0, DialAssign(), DialGet() and DialMove() must be specified.
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* @{
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*/
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typedef struct gcontainerVMT {
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gwidgetVMT gw;
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coord_t (*LeftBorder) (GHandle gh); // @< The size of the left border (mandatory)
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coord_t (*TopBorder) (GHandle gh); // @< The size of the top border (mandatory)
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coord_t (*RightBorder) (GHandle gh); // @< The size of the right border (mandatory)
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coord_t (*BottomBorder) (GHandle gh); // @< The size of the bottom border (mandatory)
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void (*NotifyAdd) (GHandle gh, GHandle ghChild); // @< Notification that a child has been added (optional)
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void (*NotifyDelete) (GHandle gh, GHandle ghChild); // @< Notification that a child has been deleted (optional)
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} gcontainerVMT;
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/** @} */
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#endif
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#if GWIN_NEED_WINDOWMANAGER || defined(__DOXYGEN__)
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// @note There is only ever one instance of each GWindowManager type
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typedef struct GWindowManager {
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const struct gwmVMT *vmt;
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} GWindowManager;
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/**
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* @brief The Virtual Method Table for a window manager
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* @{
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*/
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typedef struct gwmVMT {
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void (*Init) (void); // @< The window manager has just been set as the current window manager
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void (*DeInit) (void); // @< The window manager has just been removed as the current window manager
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bool_t (*Add) (GHandle gh, const GWindowInit *pInit); // @< A window has been added
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void (*Delete) (GHandle gh); // @< A window has been deleted
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void (*Redraw) (GHandle gh); // @< A window needs to be redraw (or undrawn)
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void (*Size) (GHandle gh, coord_t w, coord_t h); // @< A window wants to be resized
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void (*Move) (GHandle gh, coord_t x, coord_t y); // @< A window wants to be moved
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void (*Raise) (GHandle gh); // @< A window wants to be on top
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void (*MinMax) (GHandle gh, GWindowMinMax minmax); // @< A window wants to be minimized/maximised
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} gwmVMT;
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/** @} */
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/**
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* @brief The current window manager
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*/
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extern GWindowManager * _GWINwm;
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Initialise (and allocate if necessary) the base GWIN object
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*
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* @param[in] g The GDisplay to use for this window
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* @param[in] pgw The GWindowObject structure. If NULL one is allocated from the heap
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* @param[in] pInit The user initialization parameters
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* @param[in] vmt The virtual method table for the GWIN object
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* @param[in] flags The default flags to use
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*
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* @return The GHandle of the created window
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*
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* @notapi
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*/
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GHandle _gwindowCreate(GDisplay *g, GWindowObject *pgw, const GWindowInit *pInit, const gwinVMT *vmt, uint32_t flags);
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/**
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* @brief Redraw the window after a status change.
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*
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* @param[in] gh The widget to redraw
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*
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* @note Mark a window for redraw.
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* @note The window will get redrawn at some later time.
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* @note This call is designed to be fast and non-blocking
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*
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* @notapi
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*/
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void _gwinUpdate(GHandle gh);
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/**
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* @brief How to flush the redraws
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* @notes REDRAW_WAIT - Wait for a drawing session to be available
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* @notes REDRAW_NOWAIT - Do nothing if the drawing session is not available
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* @note REDRAW_INSESSION - We are already in a drawing session
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*/
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typedef enum GRedrawMethod { REDRAW_WAIT, REDRAW_NOWAIT, REDRAW_INSESSION } GRedrawMethod;
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/**
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* @brief Flush any pending redraws in the system.
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*
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* @param[in] how Do we wait for the lock?
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*
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* @note This call will attempt to flush any pending redraws
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* in the system. The doWait parameter tells this call
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* how to handle someone already holding the drawing lock.
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* If doWait is TRUE it waits to obtain the lock. If FALSE
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* and the drawing lock is free then the redraw is done
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* immediately. If the drawing lock was taken it will postpone the flush
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* on the basis that someone else will do it for us later.
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*
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* @notapi
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*/
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void _gwinFlushRedraws(GRedrawMethod how);
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/**
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* @brief Obtain a drawing session
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* @return TRUE if the drawing session was obtained, FALSE if the window is not visible
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*
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* @param[in] gh The window
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*
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* @note This function blocks until a drawing session is available if the window is visible
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*/
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bool_t _gwinDrawStart(GHandle gh);
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/**
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* @brief Release a drawing session
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*
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* @param[in] gh The window
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*/
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void _gwinDrawEnd(GHandle gh);
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/**
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* @brief Destroy a window.
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*
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* @param[in] gh The window
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* @param[in] how Do we wait for the lock?
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*
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* @note This call will delete the window. If called without the
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* drawing lock 'how' must be REDRAW_WAIT. If called with the drawing
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* lock 'how' must be REDRAW_INSESSION.
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*
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* @notapi
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*/
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void _gwinDestroy(GHandle gh, GRedrawMethod how);
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/**
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* @brief Add a window to the window manager and set its position and size
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* @return TRUE if successful
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*
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* @param[in] gh The window
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* @param[in] pInit The window init structure
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*/
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bool_t _gwinWMAdd(GHandle gh, const GWindowInit *pInit);
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#if GWIN_NEED_WIDGET || defined(__DOXYGEN__)
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/**
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* @brief Initialise (and allocate if necessary) the base Widget object
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*
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* @param[in] g The GDisplay to display this window on
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* @param[in] pgw The GWidgetObject structure. If NULL one is allocated from the heap
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* @param[in] pInit The user initialization parameters
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* @param[in] vmt The virtual method table for the Widget object
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*
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* @return The GHandle of the created widget
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*
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* @notapi
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*/
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GHandle _gwidgetCreate(GDisplay *g, GWidgetObject *pgw, const GWidgetInit *pInit, const gwidgetVMT *vmt);
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/**
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* @brief Destroy the Widget object
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*
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* @param[in] gh The widget to destroy
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*
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* @notapi
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*/
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void _gwidgetDestroy(GHandle gh);
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/**
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* @brief Redraw the Widget object (VMT method only)
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*
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* @param[in] gh The widget to redraw
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*
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* @note Do not use this routine to update a widget after a status change.
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* Use @p _gwinUpdate() instead. This routine should only be used in the
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* VMT.
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*
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* @notapi
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*/
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void _gwidgetRedraw(GHandle gh);
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/**
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* @brief Send a standard GWIN event.
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*
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* @param[in] gh The window
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* @param[in] type The event type
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*
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* @note No consideration is given to recording EVENT LOST statuses.
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*
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* @notapi
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*/
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void _gwinSendEvent(GHandle gh, GEventType type);
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#endif
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#if GWIN_NEED_CONTAINERS || defined(__DOXYGEN__)
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/**
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* @brief Initialise (and allocate if necessary) the base Container object
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*
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* @param[in] g The GDisplay to display this window on
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* @param[in] pgw The GContainerObject structure. If NULL one is allocated from the heap
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* @param[in] pInit The user initialization parameters
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* @param[in] vmt The virtual method table for the Container object
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*
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* @return The GHandle of the created widget
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*
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* @notapi
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*/
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GHandle _gcontainerCreate(GDisplay *g, GContainerObject *pgw, const GWidgetInit *pInit, const gcontainerVMT *vmt);
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/**
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* @brief Destroy the Container object
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*
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* @param[in] gh The container to destroy
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*
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* @notapi
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*/
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void _gcontainerDestroy(GHandle gh);
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/**
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* @brief Redraw the Container object (VMT method only)
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*
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* @param[in] gh The container to redraw
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*
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* @note Do not use this routine to update a container after a status change.
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* Use @p _gwinUpdate() instead. This routine should only be used in the
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* VMT.
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*
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* @notapi
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*/
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#define _gcontainerRedraw _gwidgetRedraw
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* GFX_USE_GWIN */
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#endif /* _CLASS_GWIN_H */
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/** @} */
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