This is CellScrollView.m in view mode; [Download] [Up]
/*
* You may freely copy, distribute, and reuse the code in this example.
* NeXT disclaims any warranty of any kind, expressed or implied, as to its
* fitness for any particular use.
*/
#import "CellScrollView.h"
#import "FooCell.h"
#import <appkit/Matrix.h>
#import <objc/List.h>
@implementation CellScrollView
- init
{
return [self initFrame:NULL];
}
- initFrame:(const NXRect *)frameRect
{
NXSize interCellSpacing = {0.0, 0.0}, docSize;
[super initFrame:frameRect];
cellMatrix = [[Matrix alloc] initFrame:frameRect
mode:NX_LISTMODE
cellClass:[FooCell class]
numRows:0
numCols:1];
/*
* In the following lines,
* remember that "cellMatrix" is the matrix that will be installed
* in the scrollview, "self" is the scrollview.
*/
/* we don't want any space between the matrix's cells */
[cellMatrix setIntercell:&interCellSpacing];
/* resize the matrix to contain the cells */
[cellMatrix sizeToCells];
[cellMatrix setAutosizeCells:YES];
/*
* when the user clicks in the matrix and then drags the mouse out of
* scrollView's contentView, we want the matrix to scroll
*/
[cellMatrix setAutoscroll:YES];
/* let the matrix stretch horizontally */
[cellMatrix setAutosizing:NX_WIDTHSIZABLE];
/* Install the matrix as the docview of the scrollview */
[[self setDocView:cellMatrix] free];
/* set up the visible attributes of the scrollview */
[self setVertScrollerRequired:YES];
[self setBorderType:NX_BEZEL];
/* tell the subviews to resize along with the scrollview */
[self setAutoresizeSubviews:YES];
/* This is the only way to get the clipview to resize too */
[[cellMatrix superview] setAutoresizeSubviews:YES];
/* Allow the scrollview to stretch both horizontally and vertically */
[self setAutosizing:NX_WIDTHSIZABLE|NX_HEIGHTSIZABLE];
/* Resize the matrix to fill the inside of the scrollview */
[self getContentSize:&docSize];
[cellMatrix sizeTo:docSize.width :docSize.height];
return self;
}
- free
{
[cellMatrix free];
return [super free];
}
- cellMatrix
{
return cellMatrix;
}
- loadCellsFrom:(List *)fooObjects
/*
* Fill the matrix with FooCells, associate each FooCell with a FooObject.
*
* Since we recycle the cells (via renewRows:cols:), we also set the state
* of each cell to 0 and unhighlight it. If we don't do that, the recycled
* cells will display their previous state.
*/
{
int i, cellCount;
cellCount = [fooObjects count];
/* tell the matrix there are 0 cells in it (but don't deallocate them) */
[cellMatrix renewRows:0 cols:1];
[cellMatrix lockFocus]; /* for highlightCellAt::lit: */
for (i=0;i<cellCount;i++) {
FooCell *cell;
/*
* add a row to the matrix. (This doesn't necessarily allocate a new
* cell, thanks to renewRows:cols:).
*/
[cellMatrix addRow];
cell = [cellMatrix cellAt:i:0];
/* make sure the cell is neither selected nor highlighted */
[cellMatrix highlightCellAt:i:0 lit:NO];
[cell setState:0];
/* install the fooObject in that cell */
[cell setFooObject:[fooObjects objectAt:i]];
}
[cellMatrix unlockFocus];
[cellMatrix sizeToCells];
[cellMatrix display];
return self;
}
@end
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.