1 files changed, 330 insertions, 0 deletions
diff --git a/indra/llui/llscrolllistcolumn.cpp b/indra/llui/llscrolllistcolumn.cpp
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+++ b/indra/llui/llscrolllistcolumn.cpp
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+/** 
+ * @file llscrollcolumnheader.cpp
+ * @brief Scroll lists are composed of rows (items), each of which 
+ * contains columns (cells).
+ *
+ * $LicenseInfo:firstyear=2007&license=viewergpl$
+ * 
+ * Copyright (c) 2007-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "llscrolllistcolumn.h"
+
+#include "llbutton.h"
+#include "llresizebar.h"
+#include "llscrolllistcell.h"
+#include "llscrolllistctrl.h"
+#include "llscrolllistitem.h"
+#include "lluictrlfactory.h"
+
+const S32 MIN_COLUMN_WIDTH = 20;
+
+//---------------------------------------------------------------------------
+// LLScrollColumnHeader
+//---------------------------------------------------------------------------
+
+LLScrollColumnHeader::LLScrollColumnHeader(const LLScrollColumnHeader::Params& p) 
+:	LLButton(p), // use combobox params to steal images
+	mColumn(p.column),
+	mHasResizableElement(FALSE)
+{
+	setClickedCallback(boost::bind(&LLScrollColumnHeader::onClick, this, _2));
+	
+	// resize handles on left and right
+	const S32 RESIZE_BAR_THICKNESS = 3;
+	LLResizeBar::Params resize_bar_p;
+	resize_bar_p.resizing_view(this);
+	resize_bar_p.rect(LLRect(getRect().getWidth() - RESIZE_BAR_THICKNESS, getRect().getHeight(), getRect().getWidth(), 0));
+	resize_bar_p.min_size(MIN_COLUMN_WIDTH);
+	resize_bar_p.side(LLResizeBar::RIGHT);
+	resize_bar_p.enabled(false);
+	mResizeBar = LLUICtrlFactory::create<LLResizeBar>(resize_bar_p);
+	addChild(mResizeBar);
+
+	setToolTip(p.label());
+}
+
+LLScrollColumnHeader::~LLScrollColumnHeader()
+{}
+
+void LLScrollColumnHeader::draw()
+{
+	std::string sort_column = mColumn->mParentCtrl->getSortColumnName();
+	BOOL draw_arrow = !mColumn->mLabel.empty() 
+			&& mColumn->mParentCtrl->isSorted()
+			// check for indirect sorting column as well as column's sorting name
+			&& (sort_column == mColumn->mSortingColumn || sort_column == mColumn->mName);
+
+	BOOL is_ascending = mColumn->mParentCtrl->getSortAscending();
+	setImageOverlay(is_ascending ? "up_arrow.tga" : "down_arrow.tga", LLFontGL::RIGHT, draw_arrow ? LLColor4::white : LLColor4::transparent);
+
+	// Draw children
+	LLButton::draw();
+}
+
+BOOL LLScrollColumnHeader::handleDoubleClick(S32 x, S32 y, MASK mask)
+{
+	if (canResize() && mResizeBar->getRect().pointInRect(x, y))
+	{
+		// reshape column to max content width
+		LLRect column_rect = getRect();
+		column_rect.mRight = column_rect.mLeft + mColumn->mMaxContentWidth;
+		setShape(column_rect, true);
+	}
+	else
+	{
+		onClick(LLSD());
+	}
+	return TRUE;
+}
+
+void LLScrollColumnHeader::onClick(const LLSD& data)
+{
+	if (mColumn)
+	{
+		LLScrollListCtrl::onClickColumn(mColumn);
+	}
+}
+
+LLView*	LLScrollColumnHeader::findSnapEdge(S32& new_edge_val, const LLCoordGL& mouse_dir, ESnapEdge snap_edge, ESnapType snap_type, S32 threshold, S32 padding)
+{
+	// this logic assumes dragging on right
+	llassert(snap_edge == SNAP_RIGHT);
+
+	// use higher snap threshold for column headers
+	threshold = llmin(threshold, 10);
+
+	LLRect snap_rect = getSnapRect();
+
+	S32 snap_delta = mColumn->mMaxContentWidth - snap_rect.getWidth();
+
+	// x coord growing means column growing, so same signs mean we're going in right direction
+	if (llabs(snap_delta) <= threshold && mouse_dir.mX * snap_delta > 0 ) 
+	{
+		new_edge_val = snap_rect.mRight + snap_delta;
+	}
+	else 
+	{
+		LLScrollListColumn* next_column = mColumn->mParentCtrl->getColumn(mColumn->mIndex + 1);
+		while (next_column)
+		{
+			if (next_column->mHeader)
+			{
+				snap_delta = (next_column->mHeader->getSnapRect().mRight - next_column->mMaxContentWidth) - snap_rect.mRight;
+				if (llabs(snap_delta) <= threshold && mouse_dir.mX * snap_delta > 0 ) 
+				{
+					new_edge_val = snap_rect.mRight + snap_delta;
+				}
+				break;
+			}
+			next_column = mColumn->mParentCtrl->getColumn(next_column->mIndex + 1);
+		}
+	}
+
+	return this;
+}
+
+void LLScrollColumnHeader::handleReshape(const LLRect& new_rect, bool by_user)
+{
+	S32 new_width = new_rect.getWidth();
+	S32 delta_width = new_width - (getRect().getWidth() /*+ mColumn->mParentCtrl->getColumnPadding()*/);
+
+	if (delta_width != 0)
+	{
+		S32 remaining_width = -delta_width;
+		S32 col;
+		for (col = mColumn->mIndex + 1; col < mColumn->mParentCtrl->getNumColumns(); col++)
+		{
+			LLScrollListColumn* columnp = mColumn->mParentCtrl->getColumn(col);
+			if (!columnp) continue;
+
+			if (columnp->mHeader && columnp->mHeader->canResize())
+			{
+				// how many pixels in width can this column afford to give up?
+				S32 resize_buffer_amt = llmax(0, columnp->getWidth() - MIN_COLUMN_WIDTH);
+				
+				// user shrinking column, need to add width to other columns
+				if (delta_width < 0)
+				{
+					if (columnp->getWidth() > 0)
+					{
+						// statically sized column, give all remaining width to this column
+						columnp->setWidth(columnp->getWidth() + remaining_width);
+						if (columnp->mRelWidth > 0.f)
+						{
+							columnp->mRelWidth = (F32)columnp->getWidth() / (F32)mColumn->mParentCtrl->getItemListRect().getWidth();
+						}
+						// all padding went to this widget, we're done
+						break;
+					}
+				}
+				else
+				{
+					// user growing column, need to take width from other columns
+					remaining_width += resize_buffer_amt;
+
+					if (columnp->getWidth() > 0)
+					{
+						columnp->setWidth(columnp->getWidth() - llmin(columnp->getWidth() - MIN_COLUMN_WIDTH, delta_width));
+						if (columnp->mRelWidth > 0.f)
+						{
+							columnp->mRelWidth = (F32)columnp->getWidth() / (F32)mColumn->mParentCtrl->getItemListRect().getWidth();
+						}
+					}
+
+					if (remaining_width >= 0)
+					{
+						// width sucked up from neighboring columns, done
+						break;
+					}
+				}
+			}
+		}
+
+		// clamp resize amount to maximum that can be absorbed by other columns
+		if (delta_width > 0)
+		{
+			delta_width += llmin(remaining_width, 0);
+		}
+
+		// propagate constrained delta_width to new width for this column
+		new_width = getRect().getWidth() + delta_width - mColumn->mParentCtrl->getColumnPadding();
+
+		// use requested width
+		mColumn->setWidth(new_width);
+
+		// update proportional spacing
+		if (mColumn->mRelWidth > 0.f)
+		{
+			mColumn->mRelWidth = (F32)new_width / (F32)mColumn->mParentCtrl->getItemListRect().getWidth();
+		}
+
+		// tell scroll list to layout columns again
+		// do immediate update to get proper feedback to resize handle
+		// which needs to know how far the resize actually went
+		mColumn->mParentCtrl->updateColumns();
+	}
+}
+
+void LLScrollColumnHeader::setHasResizableElement(BOOL resizable)
+{
+	if (mHasResizableElement != resizable)
+	{
+		mColumn->mParentCtrl->dirtyColumns();
+		mHasResizableElement = resizable;
+	}
+}
+
+void LLScrollColumnHeader::updateResizeBars()
+{
+	S32 num_resizable_columns = 0;
+	S32 col;
+	for (col = 0; col < mColumn->mParentCtrl->getNumColumns(); col++)
+	{
+		LLScrollListColumn* columnp = mColumn->mParentCtrl->getColumn(col);
+		if (columnp->mHeader && columnp->mHeader->canResize())
+		{
+			num_resizable_columns++;
+		}
+	}
+
+	S32 num_resizers_enabled = 0;
+
+	// now enable/disable resize handles on resizable columns if we have at least two
+	for (col = 0; col < mColumn->mParentCtrl->getNumColumns(); col++)
+	{
+		LLScrollListColumn* columnp = mColumn->mParentCtrl->getColumn(col);
+		if (!columnp->mHeader) continue;
+		BOOL enable = num_resizable_columns >= 2 && num_resizers_enabled < (num_resizable_columns - 1) && columnp->mHeader->canResize();
+		columnp->mHeader->enableResizeBar(enable);
+		if (enable)
+		{
+			num_resizers_enabled++;
+		}
+	}
+}
+
+void LLScrollColumnHeader::enableResizeBar(BOOL enable)
+{
+	mResizeBar->setEnabled(enable);
+}
+
+BOOL LLScrollColumnHeader::canResize()
+{
+	return getVisible() && (mHasResizableElement || mColumn->mDynamicWidth);
+}
+
+void LLScrollListColumn::SortNames::declareValues()
+{
+	declare("ascending", LLScrollListColumn::ASCENDING);
+	declare("descending", LLScrollListColumn::DESCENDING);
+}
+
+//
+// LLScrollListColumn
+//
+//static 
+const LLScrollListColumn::Params& LLScrollListColumn::getDefaultParams()
+{
+	return LLUICtrlFactory::getDefaultParams<LLScrollListColumn::Params>();
+}
+
+
+LLScrollListColumn::LLScrollListColumn(const Params& p, LLScrollListCtrl* parent)
+:	mWidth(0),
+	mIndex (-1),
+	mParentCtrl(parent),
+	mName(p.name),
+	mLabel(p.header.label),
+	mHeader(NULL),
+	mMaxContentWidth(0),
+	mDynamicWidth(p.width.dynamic_width),
+	mRelWidth(p.width.relative_width),
+	mFontAlignment(p.halign),
+	mSortingColumn(p.sort_column)
+{
+	if (p.sort_ascending.isProvided())
+	{
+		mSortDirection = p.sort_ascending() ? ASCENDING : DESCENDING;
+	}
+	else
+	{
+		mSortDirection = p.sort_direction;
+	}
+
+	setWidth(p.width.pixel_width);
+}
+
+void LLScrollListColumn::setWidth(S32 width) 
+{ 
+	if (!mDynamicWidth && mRelWidth <= 0.f) 
+	{
+		mParentCtrl->updateStaticColumnWidth(this, width);
+	}
+	mWidth = width;
+}