663 lines
16 KiB
Objective-C
663 lines
16 KiB
Objective-C
// 11 june 2016
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#import "uipriv_darwin.h"
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// TODO adjust all containers to handle hidden cells properly
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// TODO wrap the child in a view if its align isn't fill
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// maybe it's easier to do it regardless of align
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@interface gridChild : NSObject
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@property uiControl *c;
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@property int left;
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@property int top;
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@property int xspan;
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@property int yspan;
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@property int hexpand;
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@property uiAlign halign;
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@property int vexpand;
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@property uiAlign valign;
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@property NSLayoutPriority oldHorzHuggingPri;
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@property NSLayoutPriority oldVertHuggingPri;
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- (NSView *)view;
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@end
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@interface gridView : NSView {
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uiGrid *g;
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NSMutableArray *children;
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int padded;
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int nhexpand;
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int nvexpand;
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NSMutableArray *edges;
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NSMutableArray *inBetweens;
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NSMutableArray *emptyCellViews;
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}
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- (id)initWithG:(uiGrid *)gg;
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- (void)onDestroy;
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- (void)removeOurConstraints;
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- (void)syncEnableStates:(int)enabled;
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- (CGFloat)paddingAmount;
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- (void)establishOurConstraints;
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- (void)append:(gridChild *)gc;
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- (void)insert:(gridChild *)gc after:(uiControl *)c at:(uiAt)at;
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- (int)isPadded;
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- (void)setPadded:(int)p;
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- (BOOL)hugsTrailing;
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- (BOOL)hugsBottom;
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@end
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struct uiGrid {
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uiDarwinControl c;
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gridView *view;
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};
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@implementation gridChild
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- (NSView *)view
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{
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return (NSView *) uiControlHandle(self.c);
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}
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@end
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@implementation gridView
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- (id)initWithG:(uiGrid *)gg
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{
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self = [super initWithFrame:NSZeroRect];
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if (self != nil) {
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self->g = gg;
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self->padded = 0;
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self->children = [NSMutableArray new];
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self->nhexpand = 0;
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self->nvexpand = 0;
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self->edges = [NSMutableArray new];
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self->inBetweens = [NSMutableArray new];
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self->emptyCellViews = [NSMutableArray new];
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}
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return self;
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}
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- (void)onDestroy
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{
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gridChild *gc;
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[self removeOurConstraints];
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[self->edges release];
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[self->inBetweens release];
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[self->emptyCellViews release];
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for (gc in self->children) {
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uiControlSetParent(gc.c, NULL);
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uiDarwinControlSetSuperview(uiDarwinControl(gc.c), nil);
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uiControlDestroy(gc.c);
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}
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[self->children release];
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}
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- (void)removeOurConstraints
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{
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NSView *v;
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if ([self->edges count] != 0) {
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[self removeConstraints:self->edges];
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[self->edges removeAllObjects];
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}
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if ([self->inBetweens count] != 0) {
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[self removeConstraints:self->inBetweens];
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[self->inBetweens removeAllObjects];
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}
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for (v in self->emptyCellViews)
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[v removeFromSuperview];
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[self->emptyCellViews removeAllObjects];
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}
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- (void)syncEnableStates:(int)enabled
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{
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gridChild *gc;
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for (gc in self->children)
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uiDarwinControlSyncEnableState(uiDarwinControl(gc.c), enabled);
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}
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- (CGFloat)paddingAmount
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{
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if (!self->padded)
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return 0.0;
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return uiDarwinPaddingAmount(NULL);
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}
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- (void)establishOurConstraints
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{
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gridChild *gc;
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CGFloat padding;
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int xmin, ymin;
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int xmax, ymax;
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int xcount, ycount;
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BOOL first;
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int **gg;
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NSView ***gv;
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BOOL **gspan;
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int x, y;
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int i;
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NSLayoutConstraint *c;
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int firstx, firsty;
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BOOL *hexpand, *vexpand;
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BOOL doit;
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[self removeOurConstraints];
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if ([self->children count] == 0)
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return;
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padding = [self paddingAmount];
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// first, figure out the minimum and maximum row and column numbers
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first = YES;
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for (gc in self->children) {
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if (first) {
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xmin = gc.left;
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ymin = gc.top;
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xmax = gc.left + gc.xspan;
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ymax = gc.top + gc.yspan;
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first = NO;
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continue;
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}
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if (xmin > gc.left)
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xmin = gc.left;
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if (ymin > gc.top)
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ymin = gc.top;
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if (xmax < (gc.left + gc.xspan))
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xmax = gc.left + gc.xspan;
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if (ymax < (gc.top + gc.yspan))
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ymax = gc.top + gc.yspan;
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}
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xcount = xmax - xmin;
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ycount = ymax - ymin;
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// now build a topological map of the grid gg[y][x]
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// also figure out which cells contain spanned views so they can be ignored later
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gg = (int **) uiAlloc(ycount * sizeof (int *), "int[][]");
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gspan = (BOOL **) uiAlloc(ycount * sizeof (BOOL *), "BOOL[][]");
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for (y = 0; y < ycount; y++) {
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gg[y] = (int *) uiAlloc(xcount * sizeof (int), "int[]");
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gspan[y] = (BOOL *) uiAlloc(xcount * sizeof (BOOL), "BOOL[]");
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for (x = 0; x < xcount; x++)
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gg[y][x] = -1; // empty
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}
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for (i = 0; i < [self->children count]; i++) {
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gc = (gridChild *) [self->children objectAtIndex:i];
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for (y = gc.top; y < gc.top + gc.yspan; y++)
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for (x = gc.left; x < gc.left + gc.xspan; x++) {
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gg[y - ymin][x - xmin] = i;
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if (x != gc.left || y != gc.top)
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gspan[y - ymin][x - xmin] = YES;
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}
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}
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// if a row or column only contains emptys and spanning cells of a opposite-direction spannings, remove it by duplicating the previous row or column
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BOOL onlyEmptyAndSpanning;
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for (y = 0; y < ycount; y++) {
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onlyEmptyAndSpanning = YES;
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for (x = 0; x < xcount; x++)
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if (gg[y][x] != -1) {
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gc = (gridChild *) [self->children objectAtIndex:gg[y][x]];
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if (gc.yspan == 1 || gc.top - ymin == y) {
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onlyEmptyAndSpanning = NO;
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break;
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}
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}
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if (onlyEmptyAndSpanning)
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for (x = 0; x < xcount; x++) {
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gg[y][x] = gg[y - 1][x];
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gspan[y][x] = YES;
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}
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}
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for (x = 0; x < xcount; x++) {
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onlyEmptyAndSpanning = YES;
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for (y = 0; y < ycount; y++)
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if (gg[y][x] != -1) {
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gc = (gridChild *) [self->children objectAtIndex:gg[y][x]];
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if (gc.xspan == 1 || gc.left - xmin == x) {
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onlyEmptyAndSpanning = NO;
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break;
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}
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}
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if (onlyEmptyAndSpanning)
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for (y = 0; y < ycount; y++) {
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gg[y][x] = gg[y][x - 1];
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gspan[y][x] = YES;
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}
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}
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// now build a topological map of the grid's views gv[y][x]
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// for any empty cell, create a dummy view
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gv = (NSView ***) uiAlloc(ycount * sizeof (NSView **), "NSView *[][]");
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for (y = 0; y < ycount; y++) {
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gv[y] = (NSView **) uiAlloc(xcount * sizeof (NSView *), "NSView *[]");
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for (x = 0; x < xcount; x++)
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if (gg[y][x] == -1) {
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gv[y][x] = [[NSView alloc] initWithFrame:NSZeroRect];
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[gv[y][x] setTranslatesAutoresizingMaskIntoConstraints:NO];
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[self addSubview:gv[y][x]];
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[self->emptyCellViews addObject:gv[y][x]];
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} else {
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gc = (gridChild *) [self->children objectAtIndex:gg[y][x]];
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gv[y][x] = [gc view];
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}
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}
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// now figure out which rows and columns really expand
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hexpand = (BOOL *) uiAlloc(xcount * sizeof (BOOL), "BOOL[]");
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vexpand = (BOOL *) uiAlloc(ycount * sizeof (BOOL), "BOOL[]");
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// first, which don't span
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for (gc in self->children) {
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if (gc.hexpand && gc.xspan == 1)
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hexpand[gc.left - xmin] = YES;
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if (gc.vexpand && gc.yspan == 1)
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vexpand[gc.top - ymin] = YES;
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}
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// second, which do span
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// the way we handle this is simple: if none of the spanned rows/columns expand, make all rows/columns expand
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for (gc in self->children) {
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if (gc.hexpand && gc.xspan != 1) {
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doit = YES;
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for (x = gc.left; x < gc.left + gc.xspan; x++)
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if (hexpand[x - xmin]) {
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doit = NO;
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break;
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}
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if (doit)
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for (x = gc.left; x < gc.left + gc.xspan; x++)
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hexpand[x - xmin] = YES;
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}
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if (gc.vexpand && gc.yspan != 1) {
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doit = YES;
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for (y = gc.top; y < gc.top + gc.yspan; y++)
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if (vexpand[y - ymin]) {
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doit = NO;
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break;
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}
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if (doit)
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for (y = gc.top; y < gc.top + gc.yspan; y++)
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vexpand[y - ymin] = YES;
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}
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}
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// now establish all the edge constraints
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// leading and trailing edges
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for (y = 0; y < ycount; y++) {
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c = mkConstraint(self, NSLayoutAttributeLeading,
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NSLayoutRelationEqual,
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gv[y][0], NSLayoutAttributeLeading,
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1, 0,
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@"uiGrid leading edge constraint");
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[self addConstraint:c];
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[self->edges addObject:c];
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c = mkConstraint(self, NSLayoutAttributeTrailing,
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NSLayoutRelationEqual,
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gv[y][xcount - 1], NSLayoutAttributeTrailing,
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1, 0,
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@"uiGrid trailing edge constraint");
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[self addConstraint:c];
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[self->edges addObject:c];
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}
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// top and bottom edges
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for (x = 0; x < xcount; x++) {
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c = mkConstraint(self, NSLayoutAttributeTop,
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NSLayoutRelationEqual,
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gv[0][x], NSLayoutAttributeTop,
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1, 0,
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@"uiGrid top edge constraint");
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[self addConstraint:c];
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[self->edges addObject:c];
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c = mkConstraint(self, NSLayoutAttributeBottom,
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NSLayoutRelationEqual,
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gv[ycount - 1][x], NSLayoutAttributeBottom,
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1, 0,
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@"uiGrid bottom edge constraint");
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[self addConstraint:c];
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[self->edges addObject:c];
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}
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// now align leading and top edges
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// do NOT align spanning cells!
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for (x = 0; x < xcount; x++) {
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for (y = 0; y < ycount; y++)
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if (!gspan[y][x])
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break;
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firsty = y;
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for (y++; y < ycount; y++) {
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if (gspan[y][x])
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continue;
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c = mkConstraint(gv[firsty][x], NSLayoutAttributeLeading,
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NSLayoutRelationEqual,
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gv[y][x], NSLayoutAttributeLeading,
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1, 0,
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@"uiGrid column leading constraint");
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[self addConstraint:c];
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[self->edges addObject:c];
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}
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}
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for (y = 0; y < ycount; y++) {
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for (x = 0; x < xcount; x++)
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if (!gspan[y][x])
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break;
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firstx = x;
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for (x++; x < xcount; x++) {
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if (gspan[y][x])
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continue;
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c = mkConstraint(gv[y][firstx], NSLayoutAttributeTop,
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NSLayoutRelationEqual,
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gv[y][x], NSLayoutAttributeTop,
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1, 0,
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@"uiGrid row top constraint");
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[self addConstraint:c];
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[self->edges addObject:c];
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}
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}
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// now string adjacent views together
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for (y = 0; y < ycount; y++)
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for (x = 1; x < xcount; x++)
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if (gv[y][x - 1] != gv[y][x]) {
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c = mkConstraint(gv[y][x - 1], NSLayoutAttributeTrailing,
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NSLayoutRelationEqual,
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gv[y][x], NSLayoutAttributeLeading,
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1, -padding,
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@"uiGrid internal horizontal constraint");
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[self addConstraint:c];
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[self->inBetweens addObject:c];
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}
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for (x = 0; x < xcount; x++)
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for (y = 1; y < ycount; y++)
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if (gv[y - 1][x] != gv[y][x]) {
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c = mkConstraint(gv[y - 1][x], NSLayoutAttributeBottom,
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NSLayoutRelationEqual,
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gv[y][x], NSLayoutAttributeTop,
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1, -padding,
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@"uiGrid internal vertical constraint");
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[self addConstraint:c];
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[self->inBetweens addObject:c];
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}
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// now set priorities for all widgets that expand or not
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// if a cell is in an expanding row, OR If it spans, then it must be willing to stretch
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// otherwise, it tries not to
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// note we don't use NSLayoutPriorityRequired as that will cause things to squish when they shouldn't
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for (gc in self->children) {
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NSLayoutPriority priority;
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if (hexpand[gc.left - xmin] || gc.xspan != 1)
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priority = NSLayoutPriorityDefaultLow;
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else
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priority = NSLayoutPriorityDefaultHigh;
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uiDarwinControlSetHuggingPriority(uiDarwinControl(gc.c), priority, NSLayoutConstraintOrientationHorizontal);
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// same for vertical direction
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if (vexpand[gc.top - ymin] || gc.yspan != 1)
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priority = NSLayoutPriorityDefaultLow;
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else
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priority = NSLayoutPriorityDefaultHigh;
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uiDarwinControlSetHuggingPriority(uiDarwinControl(gc.c), priority, NSLayoutConstraintOrientationVertical);
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}
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// TODO make all expanding rows/columns the same height/width
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// and finally clean up
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uiFree(hexpand);
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uiFree(vexpand);
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for (y = 0; y < ycount; y++) {
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uiFree(gg[y]);
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uiFree(gv[y]);
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uiFree(gspan[y]);
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}
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uiFree(gg);
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uiFree(gv);
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uiFree(gspan);
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}
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- (void)append:(gridChild *)gc
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{
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BOOL update;
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int oldn;
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uiControlSetParent(gc.c, uiControl(self->g));
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uiDarwinControlSetSuperview(uiDarwinControl(gc.c), self);
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uiDarwinControlSyncEnableState(uiDarwinControl(gc.c), uiControlEnabledToUser(uiControl(self->g)));
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// no need to set priority here; that's done in establishOurConstraints
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[self->children addObject:gc];
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[self establishOurConstraints];
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update = NO;
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if (gc.hexpand) {
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oldn = self->nhexpand;
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self->nhexpand++;
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if (oldn == 0)
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update = YES;
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}
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if (gc.vexpand) {
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oldn = self->nvexpand;
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self->nvexpand++;
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if (oldn == 0)
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update = YES;
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}
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if (update)
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uiDarwinNotifyEdgeHuggingChanged(uiDarwinControl(self->g));
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[gc release]; // we don't need the initial reference now
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}
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- (void)insert:(gridChild *)gc after:(uiControl *)c at:(uiAt)at
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{
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gridChild *other;
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BOOL found;
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found = NO;
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for (other in self->children)
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if (other.c == c) {
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found = YES;
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break;
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}
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if (!found)
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userbug("Existing control %p is not in grid %p; you cannot add other controls next to it", c, self->g);
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switch (at) {
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case uiAtLeading:
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gc.left = other.left - gc.xspan;
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gc.top = other.top;
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break;
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case uiAtTop:
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gc.left = other.left;
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gc.top = other.top - gc.yspan;
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break;
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case uiAtTrailing:
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gc.left = other.left + other.xspan;
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gc.top = other.top;
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break;
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case uiAtBottom:
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gc.left = other.left;
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gc.top = other.top + other.yspan;
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break;
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// TODO add error checks to ALL enums
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}
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[self append:gc];
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}
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- (int)isPadded
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{
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return self->padded;
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}
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- (void)setPadded:(int)p
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{
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CGFloat padding;
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NSLayoutConstraint *c;
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#if 0 /* TODO */
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dispatch_after(
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dispatch_time(DISPATCH_TIME_NOW, 3 * NSEC_PER_SEC),
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dispatch_get_main_queue(),
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^{ [[self window] visualizeConstraints:[self constraints]]; }
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);
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#endif
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self->padded = p;
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padding = [self paddingAmount];
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for (c in self->inBetweens)
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switch ([c firstAttribute]) {
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case NSLayoutAttributeLeading:
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case NSLayoutAttributeTop:
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[c setConstant:padding];
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break;
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case NSLayoutAttributeTrailing:
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case NSLayoutAttributeBottom:
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[c setConstant:-padding];
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break;
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}
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}
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- (BOOL)hugsTrailing
|
|
{
|
|
// only hug if we have horizontally expanding
|
|
return self->nhexpand != 0;
|
|
}
|
|
|
|
- (BOOL)hugsBottom
|
|
{
|
|
// only hug if we have vertically expanding
|
|
return self->nvexpand != 0;
|
|
}
|
|
|
|
@end
|
|
|
|
static void uiGridDestroy(uiControl *c)
|
|
{
|
|
uiGrid *g = uiGrid(c);
|
|
|
|
[g->view onDestroy];
|
|
[g->view release];
|
|
uiFreeControl(uiControl(g));
|
|
}
|
|
|
|
uiDarwinControlDefaultHandle(uiGrid, view)
|
|
uiDarwinControlDefaultParent(uiGrid, view)
|
|
uiDarwinControlDefaultSetParent(uiGrid, view)
|
|
uiDarwinControlDefaultToplevel(uiGrid, view)
|
|
uiDarwinControlDefaultVisible(uiGrid, view)
|
|
uiDarwinControlDefaultShow(uiGrid, view)
|
|
uiDarwinControlDefaultHide(uiGrid, view)
|
|
uiDarwinControlDefaultEnabled(uiGrid, view)
|
|
uiDarwinControlDefaultEnable(uiGrid, view)
|
|
uiDarwinControlDefaultDisable(uiGrid, view)
|
|
|
|
static void uiGridSyncEnableState(uiDarwinControl *c, int enabled)
|
|
{
|
|
uiGrid *g = uiGrid(c);
|
|
|
|
if (uiDarwinShouldStopSyncEnableState(uiDarwinControl(g), enabled))
|
|
return;
|
|
[g->view syncEnableStates:enabled];
|
|
}
|
|
|
|
uiDarwinControlDefaultSetSuperview(uiGrid, view)
|
|
|
|
static BOOL uiGridHugsTrailingEdge(uiDarwinControl *c)
|
|
{
|
|
uiGrid *g = uiGrid(c);
|
|
|
|
return [g->view hugsTrailing];
|
|
}
|
|
|
|
static BOOL uiGridHugsBottom(uiDarwinControl *c)
|
|
{
|
|
uiGrid *g = uiGrid(c);
|
|
|
|
return [g->view hugsBottom];
|
|
}
|
|
|
|
static void uiGridChildEdgeHuggingChanged(uiDarwinControl *c)
|
|
{
|
|
uiGrid *g = uiGrid(c);
|
|
|
|
[g->view establishOurConstraints];
|
|
}
|
|
|
|
uiDarwinControlDefaultHuggingPriority(uiGrid, view)
|
|
uiDarwinControlDefaultSetHuggingPriority(uiGrid, view)
|
|
|
|
static void uiGridChildVisibilityChanged(uiDarwinControl *c)
|
|
{
|
|
uiGrid *g = uiGrid(c);
|
|
|
|
[g->view establishOurConstraints];
|
|
}
|
|
|
|
static gridChild *toChild(uiControl *c, int xspan, int yspan, int hexpand, uiAlign halign, int vexpand, uiAlign valign)
|
|
{
|
|
gridChild *gc;
|
|
|
|
if (xspan < 0)
|
|
userbug("You cannot have a negative xspan in a uiGrid cell.");
|
|
if (yspan < 0)
|
|
userbug("You cannot have a negative yspan in a uiGrid cell.");
|
|
gc = [gridChild new];
|
|
gc.c = c;
|
|
gc.xspan = xspan;
|
|
gc.yspan = yspan;
|
|
gc.hexpand = hexpand;
|
|
gc.halign = halign;
|
|
gc.vexpand = vexpand;
|
|
gc.valign = valign;
|
|
gc.oldHorzHuggingPri = uiDarwinControlHuggingPriority(uiDarwinControl(gc.c), NSLayoutConstraintOrientationHorizontal);
|
|
gc.oldVertHuggingPri = uiDarwinControlHuggingPriority(uiDarwinControl(gc.c), NSLayoutConstraintOrientationVertical);
|
|
return gc;
|
|
}
|
|
|
|
void uiGridAppend(uiGrid *g, uiControl *c, int left, int top, int xspan, int yspan, int hexpand, uiAlign halign, int vexpand, uiAlign valign)
|
|
{
|
|
gridChild *gc;
|
|
|
|
// LONGTERM on other platforms
|
|
// or at leat allow this and implicitly turn it into a spacer
|
|
if (c == NULL)
|
|
userbug("You cannot add NULL to a uiGrid.");
|
|
gc = toChild(c, xspan, yspan, hexpand, halign, vexpand, valign);
|
|
gc.left = left;
|
|
gc.top = top;
|
|
[g->view append:gc];
|
|
}
|
|
|
|
void uiGridInsertAt(uiGrid *g, uiControl *c, uiControl *existing, uiAt at, int xspan, int yspan, int hexpand, uiAlign halign, int vexpand, uiAlign valign)
|
|
{
|
|
gridChild *gc;
|
|
|
|
gc = toChild(c, xspan, yspan, hexpand, halign, vexpand, valign);
|
|
[g->view insert:gc after:existing at:at];
|
|
}
|
|
|
|
int uiGridPadded(uiGrid *g)
|
|
{
|
|
return [g->view isPadded];
|
|
}
|
|
|
|
void uiGridSetPadded(uiGrid *g, int padded)
|
|
{
|
|
[g->view setPadded:padded];
|
|
}
|
|
|
|
uiGrid *uiNewGrid(void)
|
|
{
|
|
uiGrid *g;
|
|
|
|
uiDarwinNewControl(uiGrid, g);
|
|
|
|
g->view = [[gridView alloc] initWithG:g];
|
|
|
|
return g;
|
|
}
|