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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/gwin_widget.c
* @brief GWIN sub-system widget code
*/
#include "../../gfx.h"
#if GFX_USE_GWIN && GWIN_NEED_WIDGET
#include <string.h>
#include "gwin_class.h"
// Our listener for events for widgets
static GListener gl;
#if (GFX_USE_GINPUT && GINPUT_NEED_KEYBOARD) || GWIN_NEED_KEYBOARD
// Our current focus window
static GHandle _widgetInFocus;
#endif
// Our default style - a white background theme
const GWidgetStyle WhiteWidgetStyle = {
HTML2COLOR(0xFFFFFF), // window background
HTML2COLOR(0x2A8FCD), // focused
// enabled color set
{
HTML2COLOR(0x000000), // text
HTML2COLOR(0x404040), // edge
HTML2COLOR(0xE0E0E0), // fill
HTML2COLOR(0x00E000) // progress - active area
},
// disabled color set
{
HTML2COLOR(0xC0C0C0), // text
HTML2COLOR(0x808080), // edge
HTML2COLOR(0xE0E0E0), // fill
HTML2COLOR(0xC0E0C0) // progress - active area
},
// pressed color set
{
HTML2COLOR(0x404040), // text
HTML2COLOR(0x404040), // edge
HTML2COLOR(0x808080), // fill
HTML2COLOR(0x00E000) // progress - active area
}
};
/* Our black style */
const GWidgetStyle BlackWidgetStyle = {
HTML2COLOR(0x000000), // window background
HTML2COLOR(0x2A8FCD), // focused
// enabled color set
{
HTML2COLOR(0xC0C0C0), // text
HTML2COLOR(0xC0C0C0), // edge
HTML2COLOR(0x606060), // fill
HTML2COLOR(0x008000) // progress - active area
},
// disabled color set
{
HTML2COLOR(0x808080), // text
HTML2COLOR(0x404040), // edge
HTML2COLOR(0x404040), // fill
HTML2COLOR(0x004000) // progress - active area
},
// pressed color set
{
HTML2COLOR(0xFFFFFF), // text
HTML2COLOR(0xC0C0C0), // edge
HTML2COLOR(0xE0E0E0), // fill
HTML2COLOR(0x008000) // progress - active area
}
};
static const GWidgetStyle * defaultStyle = &BlackWidgetStyle;
// We use these everywhere in this file
#define gw ((GWidgetObject *)gh)
#define wvmt ((gwidgetVMT *)gh->vmt)
// Process an event
static void gwidgetEvent(void *param, GEvent *pe) {
#define pme ((GEventMouse *)pe)
#define pke ((GEventKeyboard *)pe)
#define pte ((GEventToggle *)pe)
#define pde ((GEventDial *)pe)
GHandle h;
GHandle gh;
#if GFX_USE_GINPUT && (GINPUT_NEED_TOGGLE || GINPUT_NEED_DIAL)
uint16_t role;
#endif
(void) param;
// Process various events
switch (pe->type) {
#if GFX_USE_GINPUT && GINPUT_NEED_MOUSE
case GEVENT_MOUSE:
case GEVENT_TOUCH:
// Cycle through all windows
for (gh = 0, h = gwinGetNextWindow(0); h; h = gwinGetNextWindow(h)) {
// The window must be on this display and visible to be relevant
if (h->display != pme->display || !(h->flags & GWIN_FLG_SYSVISIBLE))
continue;
// Is the mouse currently captured by this widget?
if ((h->flags & (GWIN_FLG_WIDGET|GWIN_FLG_MOUSECAPTURE)) == (GWIN_FLG_WIDGET|GWIN_FLG_MOUSECAPTURE)) {
gh = h;
if ((pme->buttons & GMETA_MOUSE_UP)) {
gh->flags &= ~GWIN_FLG_MOUSECAPTURE;
if (wvmt->MouseUp)
wvmt->MouseUp(gw, pme->x - gh->x, pme->y - gh->y);
} else if (wvmt->MouseMove)
wvmt->MouseMove(gw, pme->x - gh->x, pme->y - gh->y);
// There is only ever one captured mouse. Prevent normal mouse processing if there is a captured mouse
gh = 0;
break;
}
// Save the highest z-order window that the mouse is over
if (pme->x >= h->x && pme->x < h->x + h->width && pme->y >= h->y && pme->y < h->y + h->height)
gh = h;
}
// Process any mouse down over the highest order window if it is an enabled widget
if (gh && (gh->flags & (GWIN_FLG_WIDGET|GWIN_FLG_SYSENABLED)) == (GWIN_FLG_WIDGET|GWIN_FLG_SYSENABLED)) {
if ((pme->buttons & GMETA_MOUSE_DOWN)) {
gh->flags |= GWIN_FLG_MOUSECAPTURE;
#if (GFX_USE_GINPUT && GINPUT_NEED_KEYBOARD) || GWIN_NEED_KEYBOARD
// We should try and capture the focus on this window.
// If we can't then we don't change the focus
gwinSetFocus(gh);
#endif
if (wvmt->MouseDown)
wvmt->MouseDown(gw, pme->x - gh->x, pme->y - gh->y);
}
}
break;
#endif
#if (GFX_USE_GINPUT && GINPUT_NEED_KEYBOARD) || GWIN_NEED_KEYBOARD
case GEVENT_KEYBOARD:
// If Tab key pressed then set focus to next widget
if (pke->bytecount == 1 && pke->c[0] == GKEY_TAB) {
if (!(pke->keystate & GKEYSTATE_KEYUP))
_gwinMoveFocus();
break;
}
// Otherwise, send keyboard events only to widget in focus
if (_widgetInFocus)
((gwidgetVMT*)_widgetInFocus->vmt)->KeyboardEvent((GWidgetObject*)_widgetInFocus, pke);
break;
#endif
#if GFX_USE_GINPUT && GINPUT_NEED_TOGGLE
case GEVENT_TOGGLE:
// Cycle through all windows
for(gh = gwinGetNextWindow(0); gh; gh = gwinGetNextWindow(gh)) {
// check if it a widget that is enabled and visible
if ((gh->flags & (GWIN_FLG_WIDGET|GWIN_FLG_SYSENABLED|GWIN_FLG_SYSVISIBLE)) != (GWIN_FLG_WIDGET|GWIN_FLG_SYSENABLED|GWIN_FLG_SYSVISIBLE))
continue;
for(role = 0; role < wvmt->toggleroles; role++) {
if (wvmt->ToggleGet(gw, role) == pte->instance) {
if (pte->on) {
if (wvmt->ToggleOn)
wvmt->ToggleOn(gw, role);
} else {
if (wvmt->ToggleOff)
wvmt->ToggleOff(gw, role);
}
}
}
}
break;
#endif
#if GFX_USE_GINPUT && GINPUT_NEED_DIAL
case GEVENT_DIAL:
// Cycle through all windows
for(gh = gwinGetNextWindow(0); gh; gh = gwinGetNextWindow(gh)) {
// check if it a widget that is enabled and visible
if ((gh->flags & (GWIN_FLG_WIDGET|GWIN_FLG_SYSENABLED|GWIN_FLG_SYSVISIBLE)) != (GWIN_FLG_WIDGET|GWIN_FLG_SYSENABLED|GWIN_FLG_SYSVISIBLE))
continue;
for(role = 0; role < wvmt->dialroles; role++) {
if (wvmt->DialGet(gw, role) == pte->instance) {
if (wvmt->DialMove)
wvmt->DialMove(gw, role, pde->value, pde->maxvalue);
}
}
}
break;
#endif
default:
break;
}
#undef pme
#undef pte
#undef pke
#undef pde
}
#if (GFX_USE_GINPUT && GINPUT_NEED_KEYBOARD) || GWIN_NEED_KEYBOARD
GHandle gwinGetFocus(void) {
return _widgetInFocus;
}
bool_t gwinSetFocus(GHandle gh) {
GHandle oldFocus;
// Do we already have the focus?
if (gh == _widgetInFocus)
return TRUE;
// The new window must be NULLL or a visible enabled widget with a keyboard handler
if (!gh || ((gh->flags & (GWIN_FLG_WIDGET|GWIN_FLG_ENABLED|GWIN_FLG_SYSENABLED|GWIN_FLG_VISIBLE|GWIN_FLG_SYSVISIBLE)) == (GWIN_FLG_WIDGET|GWIN_FLG_ENABLED|GWIN_FLG_SYSENABLED|GWIN_FLG_VISIBLE|GWIN_FLG_SYSVISIBLE)
&& ((gwidgetVMT*)gh->vmt)->KeyboardEvent)) {
// Move the current focus
oldFocus = _widgetInFocus;
_widgetInFocus = gh;
if (oldFocus) _gwinUpdate(oldFocus);
if (gh) _gwinUpdate(gh);
return TRUE;
}
return FALSE;
}
void _gwinMoveFocus(void) {
GHandle gh;
bool_t looponce;
// Find a new focus window (one may or may not exist).
looponce = FALSE;
for(gh = gwinGetNextWindow(_widgetInFocus); ; gh = gwinGetNextWindow(gh)) {
if (!gh && !looponce) {
looponce = TRUE;
gh = gwinGetNextWindow(0);
}
if (gwinSetFocus(gh))
break;
}
}
void _gwinFixFocus(GHandle gh) {
GHandle oldFocus;
if ((gh->flags & (GWIN_FLG_WIDGET|GWIN_FLG_ENABLED|GWIN_FLG_SYSENABLED|GWIN_FLG_VISIBLE|GWIN_FLG_SYSVISIBLE)) == (GWIN_FLG_WIDGET|GWIN_FLG_ENABLED|GWIN_FLG_SYSENABLED|GWIN_FLG_VISIBLE|GWIN_FLG_SYSVISIBLE)
&& ((gwidgetVMT*)gh->vmt)->KeyboardEvent) {
// We are a candidate to be able to claim the focus
// Claim the focus if no-one else has
if (!_widgetInFocus)
_widgetInFocus = gh;
return;
}
// We have lost any right to the focus
// Did we have the focus
if (gh != _widgetInFocus)
return;
// We did - we need to find a new focus window
oldFocus = _widgetInFocus;
for(gh = gwinGetNextWindow(oldFocus); gh && gh != oldFocus; gh = gwinGetNextWindow(gh)) {
// Must be a visible enabled widget with a keyboard handler
if ((gh->flags & (GWIN_FLG_WIDGET|GWIN_FLG_ENABLED|GWIN_FLG_SYSENABLED|GWIN_FLG_VISIBLE|GWIN_FLG_SYSVISIBLE)) == (GWIN_FLG_WIDGET|GWIN_FLG_ENABLED|GWIN_FLG_SYSENABLED|GWIN_FLG_VISIBLE|GWIN_FLG_SYSVISIBLE)
&& ((gwidgetVMT*)gh->vmt)->KeyboardEvent) {
// Grab the focus for the new window
_widgetInFocus = gh;
// This new window still needs to be marked for redraw (but don't actually do it yet).
gh->flags |= GWIN_FLG_NEEDREDRAW;
// RedrawPending |= DOREDRAW_VISIBLES; - FIX LATER
return;
}
}
// No-one has the right to the focus
_widgetInFocus = 0;
}
void _gwidgetDrawFocusRect(GWidgetObject *gx, coord_t x, coord_t y, coord_t cx, coord_t cy) {
uint16_t i;
// Don't do anything if we don't have the focus
if (&gx->g != _widgetInFocus)
return;
// Use the very simplest possible focus rectangle for now
for (i = 0; i < GWIN_FOCUS_HIGHLIGHT_WIDTH; i++) {
gdispGDrawBox(gx->g.display, gx->g.x+x+i, gx->g.y+y+i, cx-2*i, cy-2*i, gx->pstyle->focus);
}
}
#endif
#if GFX_USE_GINPUT && GINPUT_NEED_TOGGLE
static GHandle FindToggleUser(uint16_t instance) {
GHandle gh;
uint16_t role;
for(gh = gwinGetNextWindow(0); gh; gh = gwinGetNextWindow(gh)) {
if (!(gh->flags & GWIN_FLG_WIDGET)) // check if it a widget
continue;
for(role = 0; role < wvmt->toggleroles; role++) {
if (wvmt->ToggleGet(gw, role) == instance)
return gh;
}
}
return 0;
}
#endif
#if GFX_USE_GINPUT && GINPUT_NEED_DIAL
static GHandle FindDialUser(uint16_t instance) {
GHandle gh;
uint16_t role;
for(gh = gwinGetNextWindow(0); gh; gh = gwinGetNextWindow(gh)) {
if (!(gh->flags & GWIN_FLG_WIDGET)) // check if it a widget
continue;
for(role = 0; role < wvmt->dialroles; role++) {
if (wvmt->DialGet(gw, role) == instance)
return gh;
}
}
return 0;
}
#endif
void _gwidgetInit(void)
{
geventListenerInit(&gl);
geventRegisterCallback(&gl, gwidgetEvent, 0);
#if GINPUT_NEED_MOUSE
geventAttachSource(&gl, ginputGetMouse(GMOUSE_ALL_INSTANCES), GLISTEN_MOUSEMETA|GLISTEN_MOUSEDOWNMOVES);
#endif
#if GINPUT_NEED_KEYBOARD || GWIN_NEED_KEYBOARD
geventAttachSource(&gl, ginputGetKeyboard(GKEYBOARD_ALL_INSTANCES), GLISTEN_KEYUP);
#endif
}
void _gwidgetDeinit(void)
{
/* ToDo */
}
GHandle _gwidgetCreate(GDisplay *g, GWidgetObject *pgw, const GWidgetInit *pInit, const gwidgetVMT *vmt) {
if (!(pgw = (GWidgetObject *)_gwindowCreate(g, &pgw->g, &pInit->g, &vmt->g, GWIN_FLG_WIDGET|GWIN_FLG_ENABLED|GWIN_FLG_SYSENABLED)))
return 0;
#if GWIN_NEED_CONTAINERS
// This window can't be system enabled if the parent is not enabled
if (pgw->g.parent && !(pgw->g.parent->flags & GWIN_FLG_SYSENABLED))
pgw->g.flags &= ~GWIN_FLG_SYSENABLED;
#endif
pgw->text = pInit->text ? pInit->text : "";
pgw->fnDraw = pInit->customDraw ? pInit->customDraw : vmt->DefaultDraw;
pgw->fnParam = pInit->customParam;
pgw->pstyle = pInit->customStyle ? pInit->customStyle : defaultStyle;
#if GWIN_WIDGET_TAGS
pgw->tag = pInit->tag;
#endif
return &pgw->g;
}
void _gwidgetDestroy(GHandle gh) {
#if GFX_USE_GINPUT && (GINPUT_NEED_TOGGLE || GINPUT_NEED_DIAL)
uint16_t role, instance;
#endif
// Make the window is invisible so it is not eligible for focus
gh->flags &= ~GWIN_FLG_VISIBLE;
_gwinFixFocus(gh);
// Deallocate the text (if necessary)
if ((gh->flags & GWIN_FLG_ALLOCTXT)) {
gh->flags &= ~GWIN_FLG_ALLOCTXT;
gfxFree((void *)gw->text);
}
#if GFX_USE_GINPUT && GINPUT_NEED_TOGGLE
// Detach any toggles from this object
for(role = 0; role < wvmt->toggleroles; role++) {
instance = wvmt->ToggleGet(gw, role);
if (instance != GWIDGET_NO_INSTANCE) {
wvmt->ToggleAssign(gw, role, GWIDGET_NO_INSTANCE);
if (!FindToggleUser(instance))
geventDetachSource(&gl, ginputGetToggle(instance));
}
}
#endif
#if GFX_USE_GINPUT && GINPUT_NEED_DIAL
// Detach any dials from this object
for(role = 0; role < wvmt->dialroles; role++) {
instance = wvmt->DialGet(gw, role);
if (instance != GWIDGET_NO_INSTANCE) {
wvmt->DialAssign(gw, role, GWIDGET_NO_INSTANCE);
if (!FindDialUser(instance))
geventDetachSource(&gl, ginputGetDial(instance));
}
}
#endif
// Remove any listeners on this object.
geventDetachSourceListeners((GSourceHandle)gh);
}
void _gwidgetRedraw(GHandle gh) {
if (!(gh->flags & GWIN_FLG_SYSVISIBLE))
return;
gw->fnDraw(gw, gw->fnParam);
}
void _gwinSendEvent(GHandle gh, GEventType type) {
GSourceListener * psl;
GEventGWin * pge;
// Trigger a GWIN Event
psl = 0;
while ((psl = geventGetSourceListener(GWIDGET_SOURCE, psl))) {
if (!(pge = (GEventGWin *)geventGetEventBuffer(psl)))
continue;
pge->type = type;
pge->gwin = gh;
#if GWIN_WIDGET_TAGS
pge->tag = (gh->flags & GWIN_FLG_WIDGET) ? ((GWidgetObject *)gh)->tag : 0;
#endif
geventSendEvent(psl);
}
}
void gwinWidgetClearInit(GWidgetInit *pwi) {
char *p;
unsigned len;
for(p = (char *)pwi, len = sizeof(GWidgetInit); len; len--)
*p++ = 0;
}
void gwinSetDefaultStyle(const GWidgetStyle *pstyle, bool_t updateAll) {
if (!pstyle)
pstyle = &BlackWidgetStyle;
if (updateAll) {
GHandle gh;
for(gh = gwinGetNextWindow(0); gh; gh = gwinGetNextWindow(gh)) {
if ((gh->flags & GWIN_FLG_WIDGET) && ((GWidgetObject *)gh)->pstyle == defaultStyle)
gwinSetStyle(gh, pstyle);
else
gwinRedraw(gh);
}
}
gwinSetDefaultBgColor(pstyle->background);
defaultStyle = pstyle;
}
/**
* @brief Get the current default style.
*
* @api
*/
const GWidgetStyle *gwinGetDefaultStyle(void) {
return defaultStyle;
}
void gwinSetText(GHandle gh, const char *text, bool_t useAlloc) {
if (!(gh->flags & GWIN_FLG_WIDGET))
return;
// Dispose of the old string
if ((gh->flags & GWIN_FLG_ALLOCTXT)) {
gh->flags &= ~GWIN_FLG_ALLOCTXT;
if (gw->text) {
gfxFree((void *)gw->text);
gw->text = "";
}
}
// Alloc the new text if required
if (!text || !*text)
gw->text = "";
else if (useAlloc) {
char *str;
if ((str = gfxAlloc(strlen(text)+1))) {
gh->flags |= GWIN_FLG_ALLOCTXT;
strcpy(str, text);
}
gw->text = (const char *)str;
} else
gw->text = text;
_gwinUpdate(gh);
}
#if GFX_USE_GFILE && GFILE_NEED_PRINTG && GFILE_NEED_STRINGS
#include <stdarg.h>
void gwinPrintg(GHandle gh, const char * fmt, ...) {
char *str;
va_list va;
int size;
if (!(gh->flags & GWIN_FLG_WIDGET))
return;
// Dispose of the old string
if ((gh->flags & GWIN_FLG_ALLOCTXT)) {
gh->flags &= ~GWIN_FLG_ALLOCTXT;
if (gw->text) {
gfxFree((void *)gw->text);
gw->text = "";
}
}
// Alloc the new text
va_start (va, fmt);
size = vsnprintg(0, 0, fmt, va) + 1; //determine the buffer size required
if ((str = gfxAlloc(size))) {
gh->flags |= GWIN_FLG_ALLOCTXT;
vsnprintg(str, size, fmt, va);
gw->text = (const char *)str;
} else
gw->text = "";
va_end (va);
_gwinUpdate(gh);
}
#endif
const char *gwinGetText(GHandle gh) {
if (!(gh->flags & GWIN_FLG_WIDGET))
return 0;
return gw->text;
}
bool_t gwinIsWidget(GHandle gh) {
if (gh->flags & GWIN_FLG_WIDGET) {
return TRUE;
}
return FALSE;
}
void gwinSetStyle(GHandle gh, const GWidgetStyle *pstyle) {
if (!(gh->flags & GWIN_FLG_WIDGET))
return;
gw->pstyle = pstyle ? pstyle : defaultStyle;
gh->bgcolor = pstyle->background;
gh->color = pstyle->enabled.text;
_gwinUpdate(gh);
}
const GWidgetStyle *gwinGetStyle(GHandle gh) {
if (!(gh->flags & GWIN_FLG_WIDGET))
return 0;
return gw->pstyle;
}
void gwinSetCustomDraw(GHandle gh, CustomWidgetDrawFunction fn, void *param) {
if (!(gh->flags & GWIN_FLG_WIDGET))
return;
gw->fnDraw = fn ? fn : wvmt->DefaultDraw;
gw->fnParam = param;
_gwinUpdate(gh);
}
bool_t gwinAttachListener(GListener *pl) {
return geventAttachSource(pl, GWIDGET_SOURCE, 0);
}
#if GFX_USE_GINPUT && GINPUT_NEED_MOUSE
bool_t DEPRECATED("This call can now be removed. Attaching the mouse to GWIN is now automatic.") gwinAttachMouse(uint16_t instance) {
// This is now a NULL event because we automatically attach to all mice in the system.
(void) instance;
return TRUE;
}
#endif
#if GFX_USE_GINPUT && GINPUT_NEED_TOGGLE
bool_t gwinAttachToggle(GHandle gh, uint16_t role, uint16_t instance) {
GSourceHandle gsh;
uint16_t oi;
// Is this a widget
if (!(gh->flags & GWIN_FLG_WIDGET))
return FALSE;
// Is the role valid
if (role >= wvmt->toggleroles)
return FALSE;
// Is this a valid device
if (!(gsh = ginputGetToggle(instance)))
return FALSE;
// Is this already done?
oi = wvmt->ToggleGet(gw, role);
if (instance == oi)
return TRUE;
// Remove the old instance
if (oi != GWIDGET_NO_INSTANCE) {
wvmt->ToggleAssign(gw, role, GWIDGET_NO_INSTANCE);
if (!FindToggleUser(oi))
geventDetachSource(&gl, ginputGetToggle(oi));
}
// Assign the new
wvmt->ToggleAssign(gw, role, instance);
return geventAttachSource(&gl, gsh, GLISTEN_TOGGLE_ON|GLISTEN_TOGGLE_OFF);
}
bool_t gwinDetachToggle(GHandle gh, uint16_t role) {
uint16_t oi;
// Is this a widget
if (!(gh->flags & GWIN_FLG_WIDGET))
return FALSE;
// Is the role valid
if (role >= ((gwidgetVMT *)gh->vmt)->toggleroles)
return FALSE;
oi = ((gwidgetVMT *)gh->vmt)->ToggleGet(gw, role);
// Remove the instance
if (oi != GWIDGET_NO_INSTANCE) {
((gwidgetVMT *)gh->vmt)->ToggleAssign(gw, role, GWIDGET_NO_INSTANCE);
if (!FindToggleUser(oi))
geventDetachSource(&gl, ginputGetToggle(oi));
}
return TRUE;
}
#endif
#if GFX_USE_GINPUT && GINPUT_NEED_DIAL
bool_t gwinAttachDial(GHandle gh, uint16_t role, uint16_t instance) {
GSourceHandle gsh;
uint16_t oi;
if (!(gh->flags & GWIN_FLG_WIDGET))
return FALSE;
// Is the role valid
if (role >= wvmt->dialroles)
return FALSE;
// Is this a valid device
if (!(gsh = ginputGetDial(instance)))
return FALSE;
// Is this already done?
oi = wvmt->DialGet(gw, role);
if (instance == oi)
return TRUE;
// Remove the old instance
if (oi != GWIDGET_NO_INSTANCE) {
wvmt->DialAssign(gw, role, GWIDGET_NO_INSTANCE);
if (!FindDialUser(oi))
geventDetachSource(&gl, ginputGetDial(oi));
}
// Assign the new
wvmt->DialAssign(gw, role, instance);
return geventAttachSource(&gl, gsh, 0);
}
#endif
#if GWIN_WIDGET_TAGS
void gwinSetTag(GHandle gh, WidgetTag tag) {
if ((gh->flags & GWIN_FLG_WIDGET))
gw->tag = tag;
}
WidgetTag gwinGetTag(GHandle gh) {
return ((gh->flags & GWIN_FLG_WIDGET)) ? gw->tag : 0;
}
#endif
#undef gw
#undef wvmt
#endif /* GFX_USE_GWIN && GWIN_NEED_WIDGET */
/** @} */
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