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/**
* @file llresizebar.cpp
* @brief LLResizeBar base class
*
* $LicenseInfo:firstyear=2001&license=viewergpl$
*
* Copyright (c) 2001-2009, 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 "llresizebar.h"
#include "llmath.h"
#include "llui.h"
#include "llmenugl.h"
#include "llfocusmgr.h"
#include "llwindow.h"
LLResizeBar::LLResizeBar( const std::string& name, LLView* resizing_view, const LLRect& rect, S32 min_size, S32 max_size, Side side )
:
LLView( name, rect, TRUE ),
mDragLastScreenX( 0 ),
mDragLastScreenY( 0 ),
mLastMouseScreenX( 0 ),
mLastMouseScreenY( 0 ),
mMinSize( min_size ),
mMaxSize( max_size ),
mSide( side ),
mSnappingEnabled(TRUE),
mAllowDoubleClickSnapping(TRUE),
mResizingView(resizing_view)
{
// set up some generically good follow code.
switch( side )
{
case LEFT:
setFollowsLeft();
setFollowsTop();
setFollowsBottom();
break;
case TOP:
setFollowsTop();
setFollowsLeft();
setFollowsRight();
break;
case RIGHT:
setFollowsRight();
setFollowsTop();
setFollowsBottom();
break;
case BOTTOM:
setFollowsBottom();
setFollowsLeft();
setFollowsRight();
break;
default:
break;
}
// this is just a decorator
setSaveToXML(FALSE);
}
BOOL LLResizeBar::handleMouseDown(S32 x, S32 y, MASK mask)
{
// Route future Mouse messages here preemptively. (Release on mouse up.)
// No handler needed for focus lost since this clas has no state that depends on it.
gFocusMgr.setMouseCapture( this );
localPointToScreen(x, y, &mDragLastScreenX, &mDragLastScreenY);
mLastMouseScreenX = mDragLastScreenX;
mLastMouseScreenY = mDragLastScreenY;
return TRUE;
}
BOOL LLResizeBar::handleMouseUp(S32 x, S32 y, MASK mask)
{
BOOL handled = FALSE;
if( hasMouseCapture() )
{
// Release the mouse
gFocusMgr.setMouseCapture( NULL );
handled = TRUE;
}
else
{
handled = TRUE;
}
return handled;
}
BOOL LLResizeBar::handleHover(S32 x, S32 y, MASK mask)
{
BOOL handled = FALSE;
// We only handle the click if the click both started and ended within us
if( hasMouseCapture() )
{
S32 screen_x;
S32 screen_y;
localPointToScreen(x, y, &screen_x, &screen_y);
S32 delta_x = screen_x - mDragLastScreenX;
S32 delta_y = screen_y - mDragLastScreenY;
LLCoordGL mouse_dir;
// use hysteresis on mouse motion to preserve user intent when mouse stops moving
mouse_dir.mX = (screen_x == mLastMouseScreenX) ? mLastMouseDir.mX : screen_x - mLastMouseScreenX;
mouse_dir.mY = (screen_y == mLastMouseScreenY) ? mLastMouseDir.mY : screen_y - mLastMouseScreenY;
mLastMouseDir = mouse_dir;
mLastMouseScreenX = screen_x;
mLastMouseScreenY = screen_y;
// Make sure the mouse in still over the application. We don't want to make the parent
// so big that we can't see the resize handle any more.
LLRect valid_rect = getRootView()->getRect();
if( valid_rect.localPointInRect( screen_x, screen_y ) && mResizingView )
{
// Resize the parent
LLRect orig_rect = mResizingView->getRect();
LLRect scaled_rect = orig_rect;
S32 new_width = orig_rect.getWidth();
S32 new_height = orig_rect.getHeight();
switch( mSide )
{
case LEFT:
new_width = llclamp(orig_rect.getWidth() - delta_x, mMinSize, mMaxSize);
delta_x = orig_rect.getWidth() - new_width;
scaled_rect.translate(delta_x, 0);
break;
case TOP:
new_height = llclamp(orig_rect.getHeight() + delta_y, mMinSize, mMaxSize);
delta_y = new_height - orig_rect.getHeight();
break;
case RIGHT:
new_width = llclamp(orig_rect.getWidth() + delta_x, mMinSize, mMaxSize);
delta_x = new_width - orig_rect.getWidth();
break;
case BOTTOM:
new_height = llclamp(orig_rect.getHeight() - delta_y, mMinSize, mMaxSize);
delta_y = orig_rect.getHeight() - new_height;
scaled_rect.translate(0, delta_y);
break;
}
scaled_rect.mTop = scaled_rect.mBottom + new_height;
scaled_rect.mRight = scaled_rect.mLeft + new_width;
mResizingView->setRect(scaled_rect);
LLView* snap_view = NULL;
if (mSnappingEnabled)
{
switch( mSide )
{
case LEFT:
snap_view = mResizingView->findSnapEdge(scaled_rect.mLeft, mouse_dir, SNAP_LEFT, SNAP_PARENT_AND_SIBLINGS, LLUI::sConfigGroup->getS32("SnapMargin"));
break;
case TOP:
snap_view = mResizingView->findSnapEdge(scaled_rect.mTop, mouse_dir, SNAP_TOP, SNAP_PARENT_AND_SIBLINGS, LLUI::sConfigGroup->getS32("SnapMargin"));
break;
case RIGHT:
snap_view = mResizingView->findSnapEdge(scaled_rect.mRight, mouse_dir, SNAP_RIGHT, SNAP_PARENT_AND_SIBLINGS, LLUI::sConfigGroup->getS32("SnapMargin"));
break;
case BOTTOM:
snap_view = mResizingView->findSnapEdge(scaled_rect.mBottom, mouse_dir, SNAP_BOTTOM, SNAP_PARENT_AND_SIBLINGS, LLUI::sConfigGroup->getS32("SnapMargin"));
break;
}
}
// register "snap" behavior with snapped view
mResizingView->snappedTo(snap_view);
// restore original rectangle so the appropriate changes are detected
mResizingView->setRect(orig_rect);
// change view shape as user operation
mResizingView->userSetShape(scaled_rect);
// update last valid mouse cursor position based on resized view's actual size
LLRect new_rect = mResizingView->getRect();
switch(mSide)
{
case LEFT:
mDragLastScreenX += new_rect.mLeft - orig_rect.mLeft;
break;
case RIGHT:
mDragLastScreenX += new_rect.mRight - orig_rect.mRight;
break;
case TOP:
mDragLastScreenY += new_rect.mTop - orig_rect.mTop;
break;
case BOTTOM:
mDragLastScreenY += new_rect.mBottom- orig_rect.mBottom;
break;
default:
break;
}
}
handled = TRUE;
}
else
{
handled = TRUE;
}
if( handled )
{
switch( mSide )
{
case LEFT:
case RIGHT:
getWindow()->setCursor(UI_CURSOR_SIZEWE);
break;
case TOP:
case BOTTOM:
getWindow()->setCursor(UI_CURSOR_SIZENS);
break;
}
}
return handled;
} // end LLResizeBar::handleHover
BOOL LLResizeBar::handleDoubleClick(S32 x, S32 y, MASK mask)
{
LLRect orig_rect = mResizingView->getRect();
LLRect scaled_rect = orig_rect;
if (mSnappingEnabled && mAllowDoubleClickSnapping)
{
switch( mSide )
{
case LEFT:
mResizingView->findSnapEdge(scaled_rect.mLeft, LLCoordGL(0, 0), SNAP_LEFT, SNAP_PARENT_AND_SIBLINGS, S32_MAX);
scaled_rect.mLeft = scaled_rect.mRight - llclamp(scaled_rect.getWidth(), mMinSize, mMaxSize);
break;
case TOP:
mResizingView->findSnapEdge(scaled_rect.mTop, LLCoordGL(0, 0), SNAP_TOP, SNAP_PARENT_AND_SIBLINGS, S32_MAX);
scaled_rect.mTop = scaled_rect.mBottom + llclamp(scaled_rect.getHeight(), mMinSize, mMaxSize);
break;
case RIGHT:
mResizingView->findSnapEdge(scaled_rect.mRight, LLCoordGL(0, 0), SNAP_RIGHT, SNAP_PARENT_AND_SIBLINGS, S32_MAX);
scaled_rect.mRight = scaled_rect.mLeft + llclamp(scaled_rect.getWidth(), mMinSize, mMaxSize);
break;
case BOTTOM:
mResizingView->findSnapEdge(scaled_rect.mBottom, LLCoordGL(0, 0), SNAP_BOTTOM, SNAP_PARENT_AND_SIBLINGS, S32_MAX);
scaled_rect.mBottom = scaled_rect.mTop - llclamp(scaled_rect.getHeight(), mMinSize, mMaxSize);
break;
}
mResizingView->userSetShape(scaled_rect);
}
return TRUE;
}
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