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/** <title>NSTableHeaderCell</title>
Copyright (C) 1999 Free Software Foundation, Inc.
Author: Nicola Pero <n.pero@mi.flashnet.it>
Date: 1999
This file is part of the GNUstep GUI Library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; see the file COPYING.LIB.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <AppKit/NSTableHeaderCell.h>
#include <AppKit/NSColor.h>
#include <AppKit/NSFont.h>
#include <AppKit/NSGraphics.h>
#include <AppKit/NSImage.h>
#include <AppKit/DPSOperators.h>
// Cache the colors
static NSColor *bgCol;
static NSColor *hbgCol;
static NSColor *clearCol = nil;
@implementation NSTableHeaderCell
{
}
// Default appearance of NSTableHeaderCell
- (id) initTextCell: (NSString *)aString
{
[super initTextCell: aString];
[self setAlignment: NSCenterTextAlignment];
ASSIGN (_text_color, [NSColor windowFrameTextColor]);
[self setBackgroundColor: [NSColor controlShadowColor]];
[self setFont: [NSFont titleBarFontOfSize: 0]];
_cell.is_bezeled = YES;
_textfieldcell_draws_background = YES;
return self;
}
- (void) drawWithFrame: (NSRect)cellFrame
inView: (NSView *)controlView
{
if (NSIsEmptyRect (cellFrame) || ![controlView window])
return;
if (_cell.is_highlighted == YES)
{
NSRectEdge up_sides[] = {NSMaxXEdge, NSMinYEdge,
NSMinXEdge, NSMaxYEdge};
NSRectEdge down_sides[] = {NSMaxXEdge, NSMaxYEdge,
NSMinXEdge, NSMinYEdge};
float grays[] = {NSBlack, NSBlack,
NSWhite, NSWhite};
NSRect rect;
NSGraphicsContext *ctxt;
[controlView lockFocus];
ctxt = GSCurrentContext();
if (GSWViewIsFlipped(ctxt) == YES)
{
rect = NSDrawTiledRects(cellFrame, NSZeroRect,
down_sides, grays, 4);
}
else
{
rect = NSDrawTiledRects(cellFrame, NSZeroRect,
up_sides, grays, 4);
}
DPSsetgray(ctxt, NSLightGray);
DPSrectfill(ctxt, NSMinX(rect), NSMinY(rect),
NSWidth(rect), NSHeight(rect));
[controlView unlockFocus];
}
else
{
NSRectEdge up_sides[] = {NSMaxXEdge, NSMinYEdge,
NSMinXEdge, NSMaxYEdge};
NSRectEdge down_sides[] = {NSMaxXEdge, NSMaxYEdge,
NSMinXEdge, NSMinYEdge};
float grays[] = {NSBlack, NSBlack,
NSLightGray, NSLightGray};
NSRect rect;
NSGraphicsContext *ctxt;
[controlView lockFocus];
ctxt = GSCurrentContext();
if (GSWViewIsFlipped(ctxt) == YES)
{
rect = NSDrawTiledRects(cellFrame, NSZeroRect,
down_sides, grays, 4);
}
else
{
rect = NSDrawTiledRects(cellFrame, NSZeroRect,
up_sides, grays, 4);
}
DPSsetgray(ctxt, NSDarkGray);
DPSrectfill(ctxt, NSMinX(rect), NSMinY(rect),
NSWidth(rect), NSHeight(rect));
[controlView unlockFocus];
}
[self drawInteriorWithFrame: cellFrame inView: controlView];
}
- (NSColor *)textColor
{
if (_cell.is_highlighted)
{
return [NSColor controlTextColor];
}
else
{
return [NSColor windowFrameTextColor];
}
}
// Override drawInteriorWithFrame:inView: to be able
// to display images as NSCell does
- (void) drawInteriorWithFrame: (NSRect)cellFrame
inView: (NSView*)controlView
{
switch (_cell.type)
{
case NSTextCellType:
[super drawInteriorWithFrame: cellFrame inView: controlView];
break;
case NSImageCellType:
//
// Taken (with modifications) from NSCell
//
// Initialize static colors if needed
if (clearCol == nil)
{
bgCol = RETAIN([NSColor selectedControlColor]);
hbgCol = RETAIN([NSColor controlBackgroundColor]);
clearCol = RETAIN([NSColor clearColor]);
}
// Prepare to draw
cellFrame = [self drawingRectForBounds: cellFrame];
[controlView lockFocus];
// Deal with the background
if ([self isOpaque])
{
NSColor *bg;
if (_cell.is_highlighted)
bg = bgCol;
else
bg = hbgCol;
[bg set];
NSRectFill (cellFrame);
if (_cell_image)
[_cell_image setBackgroundColor: bg];
}
else
{
if (_cell_image)
[_cell_image setBackgroundColor: clearCol];
}
// Draw the image
if (_cell_image)
{
NSSize size;
NSPoint position;
size = [_cell_image size];
position.x = MAX (NSMidX (cellFrame) - (size.width/2.), 0.);
position.y = MAX (NSMidY (cellFrame) - (size.height/2.), 0.);
if ([controlView isFlipped])
position.y += size.height;
[_cell_image compositeToPoint: position operation: NSCompositeCopy];
}
// End the drawing
[controlView unlockFocus];
break;
case NSNullCellType:
break;
}
}
@end
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