/*
 * 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.c
 * @brief	GWIN sub-system code
 */

#include "../../gfx.h"

#if GFX_USE_GWIN

#include "gwin_class.h"

#include <string.h>

/*-----------------------------------------------
 * Data
 *-----------------------------------------------*/

static const gwinVMT basegwinVMT = {
		"GWIN",					// The classname
		sizeof(GWindowObject),	// The object size
		0,						// The destroy routine
		0,						// The redraw routine
		0,						// The after-clear routine
};

static gColor	defaultFgColor = GFX_WHITE;
static gColor	defaultBgColor = GFX_BLACK;
#if GDISP_NEED_TEXT
	static font_t	defaultFont;
#endif

/* These init functions are defined by each module but not published */
extern void _gwmInit(void);
extern void _gwmDeinit(void);
#if GWIN_NEED_WIDGET
	extern void _gwidgetInit(void);
	extern void _gwidgetDeinit(void);
#endif
#if GWIN_NEED_CONTAINERS
	extern void _gcontainerInit(void);
	extern void _gcontainerDeinit(void);
#endif

/*-----------------------------------------------
 * Helper Routines
 *-----------------------------------------------*/

/*-----------------------------------------------
 * Class Routines
 *-----------------------------------------------*/

void _gwinInit(void)
{
	_gwmInit();

	#if GWIN_NEED_WIDGET
		_gwidgetInit();
	#endif

	#if GWIN_NEED_CONTAINERS
		_gcontainerInit();
	#endif
}

void _gwinDeinit(void)
{
	#if GWIN_NEED_CONTAINERS
		_gcontainerDeinit();
	#endif

	#if GWIN_NEED_WIDGET
		_gwidgetDeinit();
	#endif

	_gwmDeinit();
}

// Internal routine for use by GWIN components only
// Initialise a window creating it dynamically if required.
GHandle _gwindowCreate(GDisplay *g, GWindowObject *pgw, const GWindowInit *pInit, const gwinVMT *vmt, uint32_t flags) {
	// Allocate the structure if necessary
	if (!pgw) {
		if (!(pgw = gfxAlloc(vmt->size)))
			return 0;
		pgw->flags = flags|GWIN_FLG_DYNAMIC;
	} else
		pgw->flags = flags;
	
	// Initialise all basic fields
	pgw->display = g;
	pgw->vmt = vmt;
	pgw->color = defaultFgColor;
	pgw->bgcolor = defaultBgColor;
	#if GDISP_NEED_TEXT
		pgw->font = defaultFont;
	#endif

	// Make sure we don't create nasty problems for ourselves
	if (vmt->size > sizeof(GWindowObject))
		memset(pgw+1, 0, vmt->size - sizeof(GWindowObject));

	if (!_gwinWMAdd(pgw, pInit)) {
		if ((pgw->flags & GWIN_FLG_DYNAMIC))
			gfxFree(pgw);
		return 0;
	}

	return (GHandle)pgw;
}

// Internal routine for use by GWIN components only
void _gwinDestroy(GHandle gh, GRedrawMethod how) {
	if (!gh)
		return;

	// Make the window invisible
	gwinSetVisible(gh, gFalse);

	// Make sure it is flushed first - must be REDRAW_WAIT or REDRAW_INSESSION
	_gwinFlushRedraws(how);

	#if GWIN_NEED_CONTAINERS
		// Notify the parent it is about to be deleted
		if (gh->parent && ((gcontainerVMT *)gh->parent->vmt)->NotifyDelete)
			((gcontainerVMT *)gh->parent->vmt)->NotifyDelete(gh->parent, gh);
	#endif

	// Remove from the window manager
	#if GWIN_NEED_WINDOWMANAGER
		_GWINwm->vmt->Delete(gh);
	#endif

	// Class destroy routine
	if (gh->vmt->Destroy)
		gh->vmt->Destroy(gh);

	// Clean up the structure
	if (gh->flags & GWIN_FLG_DYNAMIC) {
		gh->flags = 0;							// To be sure, to be sure
		gfxFree((void *)gh);
	} else
		gh->flags = 0;							// To be sure, to be sure
}

/*-----------------------------------------------
 * Routines that affect all windows
 *-----------------------------------------------*/

void gwinClearInit(GWindowInit *pwi) {
	char		*p;
	unsigned	len;

	for(p = (char *)pwi, len = sizeof(GWindowInit); len; len--)
		*p++ = 0;
}

void gwinSetDefaultColor(gColor clr) {
	defaultFgColor = clr;
}

gColor gwinGetDefaultColor(void) {
	return defaultFgColor;
}

void gwinSetDefaultBgColor(gColor bgclr) {
	defaultBgColor = bgclr;
}

gColor gwinGetDefaultBgColor(void) {
	return defaultBgColor;
}

#if GDISP_NEED_TEXT
	void gwinSetDefaultFont(font_t font) {
		defaultFont = font;
	}

	font_t gwinGetDefaultFont(void) {
		return defaultFont;
	}
#endif

/*-----------------------------------------------
 * The GWindow Routines
 *-----------------------------------------------*/

GHandle gwinGWindowCreate(GDisplay *g, GWindowObject *pgw, const GWindowInit *pInit) {
	if (!(pgw = _gwindowCreate(g, pgw, pInit, &basegwinVMT, 0)))
		return 0;

	gwinSetVisible(pgw, pInit->show);
	_gwinFlushRedraws(REDRAW_WAIT);

	return pgw;
}

void gwinDestroy(GHandle gh) {
	_gwinDestroy(gh, REDRAW_WAIT);
}

const char *gwinGetClassName(GHandle gh) {
	return gh->vmt->classname;
}

gBool gwinGetVisible(GHandle gh) {
	return (gh->flags & GWIN_FLG_SYSVISIBLE) ? gTrue : gFalse;
}

gBool gwinGetEnabled(GHandle gh) {
	return (gh->flags & GWIN_FLG_SYSENABLED) ? gTrue : gFalse;
}

#if GDISP_NEED_TEXT
	void gwinSetFont(GHandle gh, font_t font) {
		gh->font = font;
	}
#endif

void gwinClear(GHandle gh) {
	/*
	 * Don't render anything when the window is not visible but 
	 * still call the AfterClear() routine as some widgets will
	 * need this to clear internal buffers or similar
	 */
	if (_gwinDrawStart(gh)) {
		gdispGFillArea(gh->display, gh->x, gh->y, gh->width, gh->height, gh->bgcolor);
		_gwinDrawEnd(gh);
	}
	if (gh->vmt->AfterClear)
		gh->vmt->AfterClear(gh);
}

void gwinDrawPixel(GHandle gh, gCoord x, gCoord y) {
	if (!_gwinDrawStart(gh)) return;
	gdispGDrawPixel(gh->display, gh->x+x, gh->y+y, gh->color);
	_gwinDrawEnd(gh);
}

void gwinDrawLine(GHandle gh, gCoord x0, gCoord y0, gCoord x1, gCoord y1) {
	if (!_gwinDrawStart(gh)) return;
	gdispGDrawLine(gh->display, gh->x+x0, gh->y+y0, gh->x+x1, gh->y+y1, gh->color);
	_gwinDrawEnd(gh);
}

void gwinDrawBox(GHandle gh, gCoord x, gCoord y, gCoord cx, gCoord cy) {
	if (!_gwinDrawStart(gh)) return;
	gdispGDrawBox(gh->display, gh->x+x, gh->y+y, cx, cy, gh->color);
	_gwinDrawEnd(gh);
}

void gwinFillArea(GHandle gh, gCoord x, gCoord y, gCoord cx, gCoord cy) {
	if (!_gwinDrawStart(gh)) return;
	gdispGFillArea(gh->display, gh->x+x, gh->y+y, cx, cy, gh->color);
	_gwinDrawEnd(gh);
}

void gwinBlitArea(GHandle gh, gCoord x, gCoord y, gCoord cx, gCoord cy, gCoord srcx, gCoord srcy, gCoord srccx, const gPixel *buffer) {
	if (!_gwinDrawStart(gh)) return;
	gdispGBlitArea(gh->display, gh->x+x, gh->y+y, cx, cy, srcx, srcy, srccx, buffer);
	_gwinDrawEnd(gh);
}

#if GDISP_NEED_CIRCLE
	void gwinDrawCircle(GHandle gh, gCoord x, gCoord y, gCoord radius) {
		if (!_gwinDrawStart(gh)) return;
		gdispGDrawCircle(gh->display, gh->x+x, gh->y+y, radius, gh->color);
		_gwinDrawEnd(gh);
	}

	void gwinFillCircle(GHandle gh, gCoord x, gCoord y, gCoord radius) {
		if (!_gwinDrawStart(gh)) return;
		gdispGFillCircle(gh->display, gh->x+x, gh->y+y, radius, gh->color);
		_gwinDrawEnd(gh);
	}
#endif

#if GDISP_NEED_DUALCIRCLE
	void gwinFillDualCircle(GHandle gh, gCoord x, gCoord y, gCoord radius1, gCoord radius2) {
		if (!_gwinDrawStart(gh)) return;
		gdispGFillDualCircle(gh->display, gh->x+x, gh->y+y, radius1, gh->bgcolor, radius2, gh->color);
		_gwinDrawEnd(gh);
	}
#endif

#if GDISP_NEED_ELLIPSE
	void gwinDrawEllipse(GHandle gh, gCoord x, gCoord y, gCoord a, gCoord b) {
		if (!_gwinDrawStart(gh)) return;
		gdispGDrawEllipse(gh->display, gh->x+x, gh->y+y, a, b, gh->color);
		_gwinDrawEnd(gh);
	}

	void gwinFillEllipse(GHandle gh, gCoord x, gCoord y, gCoord a, gCoord b) {
		if (!_gwinDrawStart(gh)) return;
		gdispGFillEllipse(gh->display, gh->x+x, gh->y+y, a, b, gh->color);
		_gwinDrawEnd(gh);
	}
#endif

#if GDISP_NEED_ARC
	void gwinDrawArc(GHandle gh, gCoord x, gCoord y, gCoord radius, gCoord startangle, gCoord endangle) {
		if (!_gwinDrawStart(gh)) return;
		gdispGDrawArc(gh->display, gh->x+x, gh->y+y, radius, startangle, endangle, gh->color);
		_gwinDrawEnd(gh);
	}

	void gwinFillArc(GHandle gh, gCoord x, gCoord y, gCoord radius, gCoord startangle, gCoord endangle) {
		if (!_gwinDrawStart(gh)) return;
		gdispGFillArc(gh->display, gh->x+x, gh->y+y, radius, startangle, endangle, gh->color);
		_gwinDrawEnd(gh);
	}

	void gwinDrawThickArc(GHandle gh, gCoord x, gCoord y, gCoord startradius, gCoord endradius, gCoord startangle, gCoord endangle) {
		if (!_gwinDrawStart(gh)) return;
		gdispGDrawThickArc(gh->display, gh->x+x, gh->y+y, startradius, endradius, startangle, endangle, gh->color);
		_gwinDrawEnd(gh);
	}
#endif

#if GDISP_NEED_ARCSECTORS
	void gwinDrawArcSectors(GHandle gh, gCoord x, gCoord y, gCoord radius, uint8_t sectors) {
		if (!_gwinDrawStart(gh)) return;
		gdispGDrawArcSectors(gh->display, gh->x+x, gh->y+y, radius, sectors, gh->color);
		_gwinDrawEnd(gh);
	}

	void gwinFillArcSectors(GHandle gh, gCoord x, gCoord y, gCoord radius, uint8_t sectors) {
		if (!_gwinDrawStart(gh)) return;
		gdispGFillArcSectors(gh->display, gh->x+x, gh->y+y, radius, sectors, gh->color);
		_gwinDrawEnd(gh);
	}
#endif

#if GDISP_NEED_PIXELREAD
	gColor gwinGetPixelColor(GHandle gh, gCoord x, gCoord y) {
		if (!_gwinDrawStart(gh)) return (gColor)0;
		return gdispGGetPixelColor(gh->display, gh->x+x, gh->y+y);
		_gwinDrawEnd(gh);
	}
#endif

#if GDISP_NEED_TEXT
	void gwinDrawChar(GHandle gh, gCoord x, gCoord y, char c) {
		if (!gh->font || !_gwinDrawStart(gh)) return;
		gdispGDrawChar(gh->display, gh->x+x, gh->y+y, c, gh->font, gh->color);
		_gwinDrawEnd(gh);
	}

	void gwinFillChar(GHandle gh, gCoord x, gCoord y, char c) {
		if (!gh->font || !_gwinDrawStart(gh)) return;
		gdispGFillChar(gh->display, gh->x+x, gh->y+y, c, gh->font, gh->color, gh->bgcolor);
		_gwinDrawEnd(gh);
	}

	void gwinDrawString(GHandle gh, gCoord x, gCoord y, const char *str) {
		if (!gh->font || !_gwinDrawStart(gh)) return;
		gdispGDrawString(gh->display, gh->x+x, gh->y+y, str, gh->font, gh->color);
		_gwinDrawEnd(gh);
	}

	void gwinFillString(GHandle gh, gCoord x, gCoord y, const char *str) {
		if (!gh->font || !_gwinDrawStart(gh)) return;
		gdispGFillString(gh->display, gh->x+x, gh->y+y, str, gh->font, gh->color, gh->bgcolor);
		_gwinDrawEnd(gh);
	}

	void gwinDrawStringBox(GHandle gh, gCoord x, gCoord y, gCoord cx, gCoord cy, const char* str, gJustify justify) {
		if (!gh->font || !_gwinDrawStart(gh)) return;
		gdispGDrawStringBox(gh->display, gh->x+x, gh->y+y, cx, cy, str, gh->font, gh->color, justify);
		_gwinDrawEnd(gh);
	}

	void gwinFillStringBox(GHandle gh, gCoord x, gCoord y, gCoord cx, gCoord cy, const char* str, gJustify justify) {
		if (!gh->font || !_gwinDrawStart(gh)) return;
		gdispGFillStringBox(gh->display, gh->x+x, gh->y+y, cx, cy, str, gh->font, gh->color, gh->bgcolor, justify);
		_gwinDrawEnd(gh);
	}
#endif

#if GDISP_NEED_CONVEX_POLYGON
	void gwinDrawPoly(GHandle gh, gCoord tx, gCoord ty, const gPoint *pntarray, unsigned cnt) {
		if (!_gwinDrawStart(gh)) return;
		gdispGDrawPoly(gh->display, tx+gh->x, ty+gh->y, pntarray, cnt, gh->color);
		_gwinDrawEnd(gh);
	}

	void gwinFillConvexPoly(GHandle gh, gCoord tx, gCoord ty, const gPoint *pntarray, unsigned cnt) {
		if (!_gwinDrawStart(gh)) return;
		gdispGFillConvexPoly(gh->display, tx+gh->x, ty+gh->y, pntarray, cnt, gh->color);
		_gwinDrawEnd(gh);
	}
	void gwinDrawThickLine(GHandle gh, gCoord x0, gCoord y0, gCoord x1, gCoord y1, gCoord width, gBool round) {
		if (!_gwinDrawStart(gh)) return;
		gdispGDrawThickLine(gh->display, gh->x+x0, gh->y+y0, gh->x+x1, gh->y+y1, gh->color, width, round);
		_gwinDrawEnd(gh);
	}
#endif

#if GDISP_NEED_IMAGE
	gdispImageError gwinDrawImage(GHandle gh, gdispImage *img, gCoord x, gCoord y, gCoord cx, gCoord cy, gCoord sx, gCoord sy) {
		gdispImageError		ret;

		if (!_gwinDrawStart(gh)) return GDISP_IMAGE_ERR_OK;
		ret = gdispGImageDraw(gh->display, img, gh->x+x, gh->y+y, cx, cy, sx, sy);
		_gwinDrawEnd(gh);
		return ret;
	}
#endif

#endif /* GFX_USE_GWIN */
/** @} */