/*
 * tkMacOSXEntry.c --
 *
 *	This file implements the native aqua entry widget.
 *
 * Copyright 2001, Apple Computer, Inc.
 * Copyright (c) 2006-2007 Daniel A. Steffen <das@users.sourceforge.net>
 *
 * See the file "license.terms" for information on usage and redistribution of
 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 *	The following terms apply to all files originating from Apple
 *	Computer, Inc. ("Apple") and associated with the software
 *	unless explicitly disclaimed in individual files.
 *
 *
 *	Apple hereby grants permission to use, copy, modify,
 *	distribute, and license this software and its documentation
 *	for any purpose, provided that existing copyright notices are
 *	retained in all copies and that this notice is included
 *	verbatim in any distributions. No written agreement, license,
 *	or royalty fee is required for any of the authorized
 *	uses. Modifications to this software may be copyrighted by
 *	their authors and need not follow the licensing terms
 *	described here, provided that the new terms are clearly
 *	indicated on the first page of each file where they apply.
 *
 *
 *	IN NO EVENT SHALL APPLE, THE AUTHORS OR DISTRIBUTORS OF THE
 *	SOFTWARE BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL,
 *	INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OF
 *	THIS SOFTWARE, ITS DOCUMENTATION, OR ANY DERIVATIVES THEREOF,
 *	EVEN IF APPLE OR THE AUTHORS HAVE BEEN ADVISED OF THE
 *	POSSIBILITY OF SUCH DAMAGE.  APPLE, THE AUTHORS AND
 *	DISTRIBUTORS SPECIFICALLY DISCLAIM ANY WARRANTIES, INCLUDING,
 *	BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
 *	FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.	 THIS
 *	SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, AND APPLE,THE
 *	AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE
 *	MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
 *
 *	GOVERNMENT USE: If you are acquiring this software on behalf
 *	of the U.S. government, the Government shall have only
 *	"Restricted Rights" in the software and related documentation
 *	as defined in the Federal Acquisition Regulations (FARs) in
 *	Clause 52.227.19 (c) (2).  If you are acquiring the software
 *	on behalf of the Department of Defense, the software shall be
 *	classified as "Commercial Computer Software" and the
 *	Government shall have only "Restricted Rights" as defined in
 *	Clause 252.227-7013 (c) (1) of DFARs.  Notwithstanding the
 *	foregoing, the authors grant the U.S. Government and others
 *	acting in its behalf permission to use and distribute the
 *	software in accordance with the terms specified in this
 *	license.
 */

#include "tkMacOSXPrivate.h"
#include "tkMacOSXDefault.h"
#include "tkEntry.h"

static ThemeButtonKind ComputeIncDecParameters (int height, int *width);

/*
 *--------------------------------------------------------------
 *
 * ComputeIncDecParameters --
 *
 *	This procedure figures out which of the kThemeIncDec
 *	buttons to use. It also sets width to the width of the
 *	IncDec button.
 *
 * Results:
 *	The ThemeButtonKind of the button we should use.
 *
 * Side effects:
 *	May draw the entry border into pixmap.
 *
 *--------------------------------------------------------------
 */
static ThemeButtonKind
ComputeIncDecParameters(int height, int *width)
{
    ThemeButtonKind kind;

    TK_IF_HI_TOOLBOX (3,
	if (height < 11 || height > 28) {
	    *width = 0;
	    kind = (ThemeButtonKind) 0;
	} else {
	    if (height >= 21) {
		*width = 13;
		kind = kThemeIncDecButton;
	    } else if (height >= 18) {
		*width = 12;
		kind = kThemeIncDecButtonSmall;
	    } else {
		*width = 11;
		kind = kThemeIncDecButtonMini;
	    }
	}
    ) TK_ELSE_HI_TOOLBOX (3,
	if (height < 21 || height > 28) {
	    *width = 0;
	    kind = (ThemeButtonKind) 0;
	} else {
	    *width = 13;
	    kind = kThemeIncDecButton;
	}
    ) TK_ENDIF

    return kind;
}

/*
 *--------------------------------------------------------------
 *
 * TkpDrawEntryBorderAndFocus --
 *
 *	This procedure redraws the border of an entry window.
 *	It overrides the generic border drawing code if the
 *	entry widget parameters are such that the native widget
 *	drawing is a good fit.
 *	This version just returns 1, so platforms that don't
 *	do special native drawing don't have to implement it.
 *
 * Results:
 *	1 if it has drawn the border, 0 if not.
 *
 * Side effects:
 *	May draw the entry border into pixmap.
 *
 *--------------------------------------------------------------
 */
int
TkpDrawEntryBorderAndFocus(Entry *entryPtr, Drawable d, int isSpinbox)
{
    Rect bounds;
    TkMacOSXDrawingContext dc;
    GC bgGC;
    Tk_Window tkwin = entryPtr->tkwin;
    ThemeDrawState drawState;
    int oldWidth = 0;
    MacDrawable *macDraw = (MacDrawable *) d;

    /*
     * I use 6 as the borderwidth. 2 of the 5 go into the actual frame the
     * 3 are because the Mac OS Entry widgets leave more space around the
     * Text than Tk does on X11.
     */

    if (entryPtr->borderWidth != MAC_OSX_ENTRY_BORDER
	    || entryPtr->highlightWidth != MAC_OSX_FOCUS_WIDTH
	    || entryPtr->relief != MAC_OSX_ENTRY_RELIEF) {
	return 0;
    }

    /*
     * For the spinbox, we have to make the entry part smaller by the size
     * of the buttons. We also leave 2 pixels to the left (as per the HIG)
     * and space for one pixel to the right, 'cause it makes the buttons look
     * nicer.
     */

    if (isSpinbox) {
	ThemeButtonKind buttonKind;
	int incDecWidth;

	oldWidth = Tk_Width(tkwin);

	buttonKind = ComputeIncDecParameters(Tk_Height(tkwin)
		- 2 * MAC_OSX_FOCUS_WIDTH, &incDecWidth);
	Tk_Width(tkwin) -= incDecWidth + 1;
    }

   /*
    * The focus ring is drawn with an Alpha at the outside
    * part of the ring, so we have to draw over the edges of the
    * ring before drawing the focus or the text will peep through.
    */

    bgGC = Tk_GCForColor(entryPtr->highlightBgColorPtr, d);
    TkDrawInsetFocusHighlight(entryPtr->tkwin, bgGC, MAC_OSX_FOCUS_WIDTH, d, 0);

    /*
     * Inset the entry Frame by the maximum width of the focus rect,
     * which is 3 according to the Carbon docs.
     */

    bounds.left = macDraw->xOff + MAC_OSX_FOCUS_WIDTH;
    bounds.top = macDraw->yOff + MAC_OSX_FOCUS_WIDTH;
    bounds.right = macDraw->xOff + Tk_Width(tkwin) - MAC_OSX_FOCUS_WIDTH;
    bounds.bottom = macDraw->yOff + Tk_Height(tkwin) - MAC_OSX_FOCUS_WIDTH;
    if (entryPtr->state == STATE_DISABLED) {
	drawState = kThemeStateInactive;
    } else {
	drawState = kThemeStateActive;
    }
    if (!TkMacOSXSetupDrawingContext(d, NULL, 0, &dc)) {
	return 0;
    }
    DrawThemeEditTextFrame(&bounds, drawState);
    if (entryPtr->flags & GOT_FOCUS) {
	/*
	 * Don't call this if we don't have the focus, because then it
	 * erases the focus rect to white, but we've already drawn the
	 * highlightbackground above.
	 */

	DrawThemeFocusRect(&bounds, (entryPtr->flags & GOT_FOCUS) != 0);
    }
    if (isSpinbox) {
	Tk_Width(tkwin) = oldWidth;
    }
    TkMacOSXRestoreDrawingContext(&dc);
    return 1;
}
/*
 *--------------------------------------------------------------
 *
 * TkpDrawSpinboxButtons --
 *
 *	This procedure redraws the buttons of an spinbox widget.
 *	It overrides the generic button drawing code if the
 *	spinbox widget parameters are such that the native widget
 *	drawing is a good fit.
 *	This version just returns 0, so platforms that don't
 *	do special native drawing don't have to implement it.
 *
 * Results:
 *	1 if it has drawn the border, 0 if not.
 *
 * Side effects:
 *	May draw the entry border into pixmap.
 *
 *--------------------------------------------------------------
 */

int
TkpDrawSpinboxButtons(Spinbox *sbPtr, Drawable d)
{
    Rect inBounds;
    ThemeButtonKind inKind;
    ThemeButtonDrawInfo inNewInfo;
    ThemeButtonDrawInfo * inPrevInfo = NULL;
    ThemeEraseUPP inEraseProc = NULL;
    ThemeButtonDrawUPP inLabelProc = NULL;
    UInt32 inUserData = 0;
    Tk_Window tkwin = sbPtr->entry.tkwin;
    int height = Tk_Height(tkwin);
    int buttonHeight = height - 2 * MAC_OSX_FOCUS_WIDTH;
    int incDecWidth;
    TkMacOSXDrawingContext dc;
    XRectangle rects[1];
    GC bgGC;
    MacDrawable *macDraw = (MacDrawable *) d;

    /*
     * FIXME: RAISED really makes more sense
     */

    if (sbPtr->buRelief != TK_RELIEF_FLAT) {
	return 0;
    }

    /*
     * The actual sizes of the IncDec button are 21 for the normal,
     * 18 for the small and 15 for the mini. But the spinbox still
     * looks okay if the entry is a little bigger than this, so we
     * give it a little slop.
     */

    inKind = ComputeIncDecParameters(buttonHeight, &incDecWidth);
    if (inKind == (ThemeButtonKind) 0) {
	return 0;
    }

    if (sbPtr->entry.state == STATE_DISABLED) {
	inNewInfo.state = kThemeStateInactive;
	inNewInfo.value = kThemeButtonOff;
    } else if (sbPtr->selElement == SEL_BUTTONUP) {
	inNewInfo.state = kThemeStatePressedUp;
	inNewInfo.value = kThemeButtonOn;
    } else if (sbPtr->selElement == SEL_BUTTONDOWN) {
	inNewInfo.state = kThemeStatePressedDown;
	inNewInfo.value = kThemeButtonOn;
    } else {
	inNewInfo.state = kThemeStateActive;
	inNewInfo.value = kThemeButtonOff;
    }

    inNewInfo.adornment = kThemeAdornmentNone;

    inBounds.left = macDraw->xOff + Tk_Width(tkwin) - incDecWidth - 1;
    inBounds.right = macDraw->xOff + Tk_Width(tkwin) - 1;
    inBounds.top = macDraw->yOff + MAC_OSX_FOCUS_WIDTH;
    inBounds.bottom = macDraw->yOff + Tk_Height(tkwin) - MAC_OSX_FOCUS_WIDTH;

    /* We had to make the entry part of the window smaller so that we
     * wouldn't overdraw the spin buttons with the focus highlight. So
     * now we have to draw the highlightbackground.
     */

    bgGC = Tk_GCForColor(sbPtr->entry.highlightBgColorPtr, d);
    rects[0].x = inBounds.left;
    rects[0].y = 0;
    rects[0].width = Tk_Width(tkwin);
    rects[0].height = Tk_Height(tkwin);
    XFillRectangles(Tk_Display(tkwin), d, bgGC, rects, 1);

    if (!TkMacOSXSetupDrawingContext(d, NULL, 0, &dc)) {
	return 0;
    }
    ChkErr(DrawThemeButton, &inBounds, inKind, &inNewInfo, inPrevInfo,
	    inEraseProc, inLabelProc, inUserData);
    TkMacOSXRestoreDrawingContext(&dc);
    return 1;
}

