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-rw-r--r--src/layout/engine.nim404
1 files changed, 232 insertions, 172 deletions
diff --git a/src/layout/engine.nim b/src/layout/engine.nim
index 0fa1c156..d1ce9f27 100644
--- a/src/layout/engine.nim
+++ b/src/layout/engine.nim
@@ -378,10 +378,13 @@ proc newFlowRootBox(viewport: Viewport, box: BoxBuilder, parentWidth: int, paren
   result.setPreferredDimensions(parentWidth, parentHeight)
   result.shrink = result.computed{"width"}.auto
 
-proc newBlockBox(parent: BlockBox, box: BoxBuilder, ignore_parent_shrink = false): BlockBox =
+proc newBlockBox(parent: BlockBox, box: BoxBuilder, ignore_parent_shrink = false, maxwidth = none(int)): BlockBox =
   new(result)
   result.newBlockBox_common2(parent, box)
   result.shrink = result.computed{"width"}.auto and (ignore_parent_shrink or parent.shrink)
+  if maxwidth.isSome:
+    #TODO TODO TODO this is ugly
+    result.setPreferredDimensions(maxwidth.get, parent.compheight)
 
 proc newTableCellBox(parent: BlockBox, box: TableCellBoxBuilder): BlockBox =
   return newBlockBox(parent, box, true)
@@ -431,7 +434,7 @@ proc positionInlines(bctx: BlockBox) =
   else:
     bctx.width = bctx.compwidth
 
-proc buildBlock(box: BlockBoxBuilder, parent: BlockBox): BlockBox
+proc buildBlock(box: BlockBoxBuilder, parent: BlockBox, maxwidth = none(int)): BlockBox
 proc buildInlines(bctx: BlockBox, inlines: seq[BoxBuilder]): InlineContext
 proc buildBlocks(bctx: BlockBox, blocks: seq[BoxBuilder], node: StyledNode)
 
@@ -678,34 +681,65 @@ proc buildTableRow(pctx: TableContext, ctx: RowContext, parent: BlockBox, builde
   row.width = x
   return row
 
-iterator rows(builder: TableBoxBuilder): TableRowBoxBuilder =
+iterator rows(builder: TableBoxBuilder): BoxBuilder {.inline.} =
+  var header: seq[TableRowBoxBuilder]
+  var body: seq[TableRowBoxBuilder]
+  var footer: seq[TableRowBoxBuilder]
+  var caption: TableCaptionBoxBuilder
+  #TODO this should be done 
   for child in builder.children:
-    assert child.computed{"display"} in {DISPLAY_TABLE_ROW, DISPLAY_TABLE_ROW_GROUP}
+    assert child.computed{"display"} in ProperTableChild, $child.computed{"display"}
     case child.computed{"display"}
     of DISPLAY_TABLE_ROW:
-      yield TableRowBoxBuilder(child)
+      body.add(TableRowBoxBuilder(child))
+    of DISPLAY_TABLE_HEADER_GROUP:
+      for child in child.children:
+        assert child.computed{"display"} == DISPLAY_TABLE_ROW
+        header.add(TableRowBoxBuilder(child))
     of DISPLAY_TABLE_ROW_GROUP:
-      for child in TableRowGroupBoxBuilder(child).children:
+      for child in child.children:
+        assert child.computed{"display"} == DISPLAY_TABLE_ROW
+        body.add(TableRowBoxBuilder(child))
+    of DISPLAY_TABLE_FOOTER_GROUP:
+      for child in child.children:
         assert child.computed{"display"} == DISPLAY_TABLE_ROW
-        yield TableRowBoxBuilder(child)
+        footer.add(TableRowBoxBuilder(child))
+    of DISPLAY_TABLE_CAPTION:
+      if caption == nil:
+        caption = TableCaptionBoxBuilder(child)
     else: discard
+  yield caption
+  for child in header:
+    yield child
+  for child in body:
+    yield child
+  for child in footer:
+    yield child
 
 proc buildTable(box: TableBoxBuilder, parent: BlockBox): BlockBox =
   let table = parent.newTableBox(box)
   var ctx: TableContext
-  var maxw = 0
   for row in box.rows:
-    let rctx = ctx.preBuildTableRow(row, table)
-    ctx.rows.add(rctx)
-    maxw = max(rctx.width, maxw)
-  if maxw > table.compwidth and false: #TODO
-    for n in ctx.colwidths_specified:
-      maxw -= n
-    ctx.reflow.setLen(ctx.colwidths.len)
-    for i in 0 ..< ctx.colwidths.len:
-      if ctx.colwidths[i] != 0:
-        ctx.colwidths[i] -= (maxw - table.compwidth) div ctx.colwidths[i]
-        ctx.reflow[i] = true
+    if unlikely(row.computed{"display"} == DISPLAY_TABLE_CAPTION):
+      ctx.caption = TableCaptionBoxBuilder(row)
+    else:
+      let row = TableRowBoxBuilder(row)
+      let rctx = ctx.preBuildTableRow(row, table)
+      ctx.rows.add(rctx)
+      ctx.maxwidth = max(rctx.width, ctx.maxwidth)
+  #TODO implement a better table layout
+  #if ctx.maxwidth > table.compwidth:
+  #  for n in ctx.colwidths_specified:
+  #    ctx.maxwidth -= n
+  #  ctx.reflow.setLen(ctx.colwidths.len)
+  #  for i in 0 ..< ctx.colwidths.len:
+  #    if ctx.colwidths[i] != 0 and (ctx.colwidths_specified.len <= i or ctx.colwidths_specified[i] == 0):
+  #      ctx.colwidths[i] -= (ctx.maxwidth - table.compwidth) div ctx.colwidths[i]
+  #      ctx.reflow[i] = true
+  if ctx.caption != nil:
+    let caption = buildBlock(ctx.caption, table, some(ctx.maxwidth))
+    table.nested.add(caption)
+    table.height += caption.height
   for roww in ctx.rows:
     let row = ctx.buildTableRow(roww, table, roww.builder)
     row.offset.y += table.height
@@ -726,9 +760,9 @@ proc buildBlocks(bctx: BlockBox, blocks: seq[BoxBuilder], node: StyledNode) =
   bctx.positionBlocks()
 
 # Build a block box inside another block box, based on a builder.
-proc buildBlock(box: BlockBoxBuilder, parent: BlockBox): BlockBox =
+proc buildBlock(box: BlockBoxBuilder, parent: BlockBox, maxwidth = none(int)): BlockBox =
   assert parent != nil
-  result = parent.newBlockBox(box)
+  result = parent.newBlockBox(box, maxwidth = maxwidth)
   if box.inlinelayout:
     result.buildInlineLayout(box.children)
   else:
@@ -803,16 +837,30 @@ proc getTableCellBox(computed: CSSComputedValues): TableCellBoxBuilder =
   result.computed = computed
   result.colspan = 1
 
+proc getTableCaptionBox(computed: CSSComputedValues): TableCaptionBoxBuilder =
+  new(result)
+  result.computed = computed
+
 type BlockGroup = object
   parent: BoxBuilder
   boxes: seq[BoxBuilder]
   listItemCounter: int
 
+type InnerBlockContext = object
+  styledNode: StyledNode
+  blockgroup: BlockGroup
+  viewport: Viewport
+  ibox: InlineBoxBuilder
+  anonRow: TableRowBoxBuilder
+  anonTable: TableBoxBuilder
+
 proc add(blockgroup: var BlockGroup, box: BoxBuilder) {.inline.} =
+  assert box.computed{"display"} in {DISPLAY_INLINE, DISPLAY_INLINE_BLOCK}, $box.computed{"display"}
   blockgroup.boxes.add(box)
 
 proc flush(blockgroup: var BlockGroup) {.inline.} =
   if blockgroup.boxes.len > 0:
+    assert blockgroup.parent.computed{"display"} != DISPLAY_INLINE
     let bbox = getBlockBox(blockgroup.parent.computed.inheritProperties())
     bbox.inlinelayout = true
     bbox.children = blockgroup.boxes
@@ -825,13 +873,14 @@ func canGenerateAnonymousInline(blockgroup: BlockGroup, computed: CSSComputedVal
     computed{"white-space"} in {WHITESPACE_PRE_LINE, WHITESPACE_PRE, WHITESPACE_PRE_WRAP} or
     not str.onlyWhitespace()
 
-template flush_ibox() =
+proc iflush(blockgroup: var BlockGroup, ibox: var InlineBoxBuilder) =
   if ibox != nil:
     assert ibox.computed{"display"} in {DISPLAY_INLINE, DISPLAY_INLINE_BLOCK}
     blockgroup.add(ibox)
     ibox = nil
 
 proc newBlockGroup(parent: BoxBuilder): BlockGroup =
+  assert parent.computed{"display"} != DISPLAY_INLINE
   result.parent = parent
   result.listItemCounter = 1
 
@@ -839,163 +888,197 @@ proc generateTableBox(styledNode: StyledNode, viewport: Viewport): TableBoxBuild
 proc generateTableRowGroupBox(styledNode: StyledNode, viewport: Viewport): TableRowGroupBoxBuilder
 proc generateTableRowBox(styledNode: StyledNode, viewport: Viewport): TableRowBoxBuilder
 proc generateTableCellBox(styledNode: StyledNode, viewport: Viewport): TableCellBoxBuilder
-
+proc generateTableCaptionBox(styledNode: StyledNode, viewport: Viewport): TableCaptionBoxBuilder
 proc generateBlockBox(styledNode: Sty
/*
 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
 * See LICENSE file for license details.
 */
#include "dwm.h"
#include <stdlib.h>
#include <X11/keysym.h>
#include <X11/Xatom.h>

/* static */

typedef struct {
	unsigned long mod;
	KeySym keysym;
	void (*func)(Arg *arg);
	Arg arg;
} Key;

KEYS

#define CLEANMASK(mask) (mask & ~(numlockmask | LockMask))

static void
movemouse(Client *c)
{
	int x1, y1, ocx, ocy, di;
	unsigned int dui;
	Window dummy;
	XEvent ev;

	ocx = c->x;
	ocy = c->y;
	if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
			None, cursor[CurMove], CurrentTime) != GrabSuccess)
		return;
	XQueryPointer(dpy, root, &dummy, &dummy, &x1, &y1, &di, &di, &dui);
	for(;;) {
		XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
		switch (ev.type) {
		default: break;
		case Expose:
			handler[Expose](&ev);
			break;
		case MotionNotify:
			XSync(dpy, False);
			c->x = ocx + (ev.xmotion.x - x1);
			c->y = ocy + (ev.xmotion.y - y1);
			resize(c, False, TopLeft);
			break;
		case ButtonRelease:
			XUngrabPointer(dpy, CurrentTime);
			return;
		}
	}
}

static void
resizemouse(Client *c)
{
	int ocx, ocy;
	int nw, nh;
	Corner sticky;
	XEvent ev;

	ocx = c->x;
	ocy = c->y;
	if(XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
				None, cursor[CurResize], CurrentTime) != GrabSuccess)
		return;
	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w, c->h);
	for(;;) {
		XMaskEvent(dpy, MOUSEMASK | ExposureMask, &ev);
		switch(ev.type) {
		default: break;
		case Expose:
			handler[Expose](&ev);
			break;
		case MotionNotify:
			XSync(dpy, False);
			if((nw = abs(ocx - ev.xmotion.x)))
				c->w = abs(ocx - ev.xmotion.x);
			if((nh = abs(ocy - ev.xmotion.y)))
				c->h = abs(ocy - ev.xmotion.y);
			c->x = (ocx <= ev.xmotion.x) ? ocx : ocx - c->w;
			c->y = (ocy <= ev.xmotion.y) ? ocy : ocy - c->h;
			if(ocx <= ev.xmotion.x)
				sticky = (ocy <= ev.xmotion.y) ? TopLeft : BotLeft;
			else
				sticky = (ocy <= ev.xmotion.y) ? TopRight : BotRight;
			resize(c, True, sticky);
			break;
		case ButtonRelease:
			XUngrabPointer(dpy, CurrentTime);
			return;
		}
	}
}

static void
buttonpress(XEvent *e)
{
	int x;
	Arg a;
	Client *c;
	XButtonPressedEvent *ev = &e->xbutton;

	if(barwin == ev->window) {
		x = 0;
		for(a.i = 0; a.i < ntags; a.i++) {
			x += textw(tags[a.i]);
			if(ev->x < x) {
				if(ev->button == Button1) {
					if(ev->state & MODKEY)
						tag(&a);
					else
						view(&a);
				}
				else if(ev->button == Button3) {
					if(ev->state & MODKEY)
						toggletag(&a);
					else
						toggleview(&a);
				}
				return;
			}
		}
		if(ev->x < x + bmw) {
			if(ev->button == Button1)
				togglemode(NULL);
		}
	}
	else if((c = getclient(ev->window))) {
		focus(c);
		if(maximized || CLEANMASK(ev->state) != MODKEY)
			return;
		if(ev->button == Button1 && (arrange == dofloat || c->isfloat)) {
			restack(c);
			movemouse(c);
		}
		else if(ev->button == Button2)
			zoom(NULL);
		else if(ev->button == Button3 && (arrange == dofloat || c->isfloat)) {
			restack(c);
			resizemouse(c);
		}
	}
}

static void
synconfig(Client *c, int x, int y, int w, int h, unsigned int border)
{
	XEvent synev;

	synev.type = ConfigureNotify;
	synev.xconfigure.display = dpy;
	synev.xconfigure.event = c->win;
	synev.xconfigure.window = c->win;
	synev.xconfigure.x = x;
	synev.xconfigure.y = y;
	synev.xconfigure.width = w;
	synev.xconfigure.height = h;
	synev.xconfigure.border_width = border;
	synev.xconfigure.above = None;
	XSendEvent(dpy, c->win, True, NoEventMask, &synev);
}

static void
configurerequest(XEvent *e)
{
	unsigned long newmask;
	Client *c;
	XConfigureRequestEvent *ev = &e->xconfigurerequest;
	XWindowChanges wc;

	if((c = getclient(ev->window))) {
		if((c == sel) && !c->isfloat && (arrange != dofloat) && maximized) {
			synconfig(c, sx, sy + bh, sw - 2, sh - 2 - bh, ev->border_width);
			XSync(dpy, False);
			return;
		}
		gravitate(c, True);
		if(ev->value_mask & CWX)
			c->x = ev->x;
		if(ev->value_mask & CWY)
			c->y = ev->y;
		if(ev->value_mask & CWWidth)
			c->w = ev->width;
		if(ev->value_mask & CWHeight)
			c->h = ev->height;
		if(ev->value_mask & CWBorderWidth)
			c->border = ev->border_width;
		gravitate(c, False);
		wc.x = c->x;
		wc.y = c->y;
		wc.width = c->w;
		wc.height = c->h;
		newmask = ev->value_mask & (~(CWSibling | CWStackMode | CWBorderWidth));
		if(newmask)
			XConfigureWindow(dpy, c->win, newmask, &wc);
		else
			synconfig(c, c->x, c->y, c->w, c->h, c->border);
		XSync(dpy, False);
		if(c->isfloat)
			resize(c, False, TopLeft);
		else
			arrange(NULL);
	}
	else {
		wc.x = ev->x;
		wc.y = ev->y;
		wc.width = ev->width;
		wc.height = ev->height;
		wc.border_width = ev->border_width;
		wc.sibling = ev->above;
		wc.stack_mode = ev->detail;
		XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
		XSync(dpy, False);
	}
}

static void
destroynotify(XEvent *e)
{
	Client *c;
	XDestroyWindowEvent *ev = &e->xdestroywindow;

	if((c = getclient(ev->window)))
		unmanage(c);
}

static void
enternotify(XEvent *e)
{
	Client *c;
	XCrossingEvent *ev = &e->xcrossing;

	if(ev->mode != NotifyNormal || ev->detail == NotifyInferior)
		return;

	if((c = getclient(ev->window)) || (c = getctitle(ev->window)))
		focus(c);
	else if(ev->window == root) {
		issel = True;
		XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
		drawall();
	}
}

static void
expose(XEvent *e)
{
	Client *c;
	XExposeEvent *ev = &e->xexpose;

	if(ev->count == 0) {
		if(barwin == ev->window)
			drawstatus();
		else if((c = getctitle(ev->window)))
			drawtitle(c);
	}
}

static void
keypress(XEvent *e)
{
	static unsigned int len = sizeof(key) / sizeof(key[0]);
	unsigned int i;
	KeySym keysym;
	XKeyEvent *ev = &e->xkey;

	keysym = XKeycodeToKeysym(dpy, (KeyCode)ev->keycode, 0);
	for(i = 0; i < len; i++) {
		if(keysym == key[i].keysym &&
				CLEANMASK(key[i].mod) == CLEANMASK(ev->state))
		{
			if(key[i].func)
				key[i].func(&key[i].arg);
			return;
		}
	}
}

static void
leavenotify(XEvent *e)
{
	XCrossingEvent *ev = &e->xcrossing;

	if((ev->window == root) && !ev->same_screen) {
		issel = False;
		drawall();
	}
}

static void
mappingnotify(XEvent *e)
{
	XMappingEvent *ev = &e->xmapping;

	XRefreshKeyboardMapping(ev);
	if(ev->request == MappingKeyboard)
		grabkeys();
}

static void
maprequest(XEvent *e)
{
	static XWindowAttributes wa;
	XMapRequestEvent *ev = &e->xmaprequest;

	if(!XGetWindowAttributes(dpy, ev->window, &wa))
		return;

	if(wa.override_redirect) {
		XSelectInput(dpy, ev->window,
				(StructureNotifyMask | PropertyChangeMask));
		return;
	}

	if(!getclient(ev->window))
		manage(ev->window, &wa);
}

static void
propertynotify(XEvent *e)
{
	Client *c;
	Window trans;
	XPropertyEvent *ev = &e->xproperty;

	if(ev->state == PropertyDelete)
		return; /* ignore */

	if((c = getclient(ev->window))) {
		if(ev->atom == wmatom[WMProtocols]) {
			c->proto = getproto(c->win);
			return;
		}
		switch (ev->atom) {
			default: break;
			case XA_WM_TRANSIENT_FOR:
				XGetTransientForHint(dpy, c->win, &trans);
				if(!c->isfloat && (c->isfloat = (trans != 0)))
					arrange(NULL);
				break;
			case XA_WM_NORMAL_HINTS:
				setsize(c);
				break;
		}
		if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
			settitle(c);
			drawtitle(c);
		}
	}
}

static void
unmapnotify(XEvent *e)
{
	Client *c;
	XUnmapEvent *ev = &e->xunmap;

	if((c = getclient(ev->window)))
		unmanage(c);
}

/* extern */

void (*handler[LASTEvent]) (XEvent *) = {
	[ButtonPress] = buttonpress,
	[ConfigureRequest] = configurerequest,
	[DestroyNotify] = destroynotify,
	[EnterNotify] = enternotify,
	[LeaveNotify] = leavenotify,
	[Expose] = expose,
	[KeyPress] = keypress,
	[MappingNotify] = mappingnotify,
	[MapRequest] = maprequest,
	[PropertyNotify] = propertynotify,
	[UnmapNotify] = unmapnotify
};

void
grabkeys()
{
	static unsigned int len = sizeof(key) / sizeof(key[0]);
	unsigned int i;
	KeyCode code;

	XUngrabKey(dpy, AnyKey, AnyModifier, root);
	for(i = 0; i < len; i++) {
		code = XKeysymToKeycode(dpy, key[i].keysym);
		XGrabKey(dpy, code, key[i].mod, root, True,
				GrabModeAsync, GrabModeAsync);
		XGrabKey(dpy, code, key[i].mod | LockMask, root, True,
				GrabModeAsync, GrabModeAsync);
		XGrabKey(dpy, code, key[i].mod | numlockmask, root, True,
				GrabModeAsync, GrabModeAsync);
		XGrabKey(dpy, code, key[i].mod | numlockmask | LockMask, root, True,
				GrabModeAsync, GrabModeAsync);
	}
}

void
procevent()
{
	XEvent ev;

	while(XPending(dpy)) {
		XNextEvent(dpy, &ev);
		if(handler[ev.type])
			(handler[ev.type])(&ev); /* call handler */
	}
}