/** * @file llscrollingpanellist.cpp * @brief * * $LicenseInfo:firstyear=2006&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2010, Linden Research, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License only. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ #include "linden_common.h" #include "llstl.h" #include "llscrollingpanellist.h" static LLDefaultChildRegistry::Register<LLScrollingPanelList> r("scrolling_panel_list"); ///////////////////////////////////////////////////////////////////// // LLScrollingPanelList // This could probably be integrated with LLScrollContainer -SJB LLScrollingPanelList::Params::Params() : is_horizontal("is_horizontal") , padding("padding") , spacing("spacing") { } LLScrollingPanelList::LLScrollingPanelList(const Params& p) : LLUICtrl(p) , mIsHorizontal(p.is_horizontal) , mPadding(p.padding.isProvided() ? p.padding : DEFAULT_PADDING) , mSpacing(p.spacing.isProvided() ? p.spacing : DEFAULT_SPACING) { } void LLScrollingPanelList::clearPanels() { deleteAllChildren(); mPanelList.clear(); rearrange(); } S32 LLScrollingPanelList::addPanel(LLScrollingPanel* panel, bool back) { if (back) { addChild(panel); mPanelList.push_back(panel); } else { addChildInBack(panel); mPanelList.push_front(panel); } rearrange(); return mIsHorizontal ? getRect().getWidth() : getRect().getHeight(); } void LLScrollingPanelList::removePanel(LLScrollingPanel* panel) { U32 index = 0; LLScrollingPanelList::panel_list_t::const_iterator iter; if (!mPanelList.empty()) { LLScrollingPanelList::panel_list_t::const_iterator iter = std::find(mPanelList.begin(), mPanelList.end(), panel); if (iter != mPanelList.end()) { removeChild(panel); mPanelList.erase(iter); rearrange(); } } } void LLScrollingPanelList::removePanel(U32 panel_index) { if (panel_index >= mPanelList.size()) { LL_WARNS() << "Panel index " << panel_index << " is out of range!" << LL_ENDL; return; } LLScrollingPanelList::panel_list_t::const_iterator iter = mPanelList.begin() + panel_index; removeChild(*iter); mPanelList.erase(iter); rearrange(); } void LLScrollingPanelList::updatePanels(bool allow_modify) { for (LLScrollingPanel* childp : mPanelList) { childp->updatePanel(allow_modify); } } void LLScrollingPanelList::rearrange() { // Resize this view S32 new_width, new_height; if (!mPanelList.empty()) { new_width = new_height = mPadding * 2; for (LLScrollingPanel* childp : mPanelList) { const LLRect& rect = childp->getRect(); if (mIsHorizontal) { new_width += rect.getWidth() + mSpacing; new_height = llmax(new_height, rect.getHeight()); } else { new_height += rect.getHeight() + mSpacing; new_width = llmax(new_width, rect.getWidth()); } } if (mIsHorizontal) { new_width -= mSpacing; } else { new_height -= mSpacing; } } else { new_width = new_height = 1; } LLRect rc = getRect(); if (mIsHorizontal || !followsRight()) { rc.mRight = rc.mLeft + new_width; } if (!mIsHorizontal || !followsBottom()) { rc.mBottom = rc.mTop - new_height; } if (rc.mRight != getRect().mRight || rc.mBottom != getRect().mBottom) { setRect(rc); notifySizeChanged(); } // Reposition each of the child views S32 pos = mIsHorizontal ? mPadding : rc.getHeight() - mPadding; for (LLScrollingPanel* childp : mPanelList) { const LLRect& rect = childp->getRect(); if (mIsHorizontal) { childp->translate(pos - rect.mLeft, rc.getHeight() - mPadding - rect.mTop); pos += rect.getWidth() + mSpacing; } else { childp->translate(mPadding - rect.mLeft, pos - rect.mTop); pos -= rect.getHeight() + mSpacing; } } } void LLScrollingPanelList::updatePanelVisiblilty() { // Determine visibility of children. LLRect parent_screen_rect; getParent()->localPointToScreen( mPadding, mPadding, &parent_screen_rect.mLeft, &parent_screen_rect.mBottom ); getParent()->localPointToScreen( getParent()->getRect().getWidth() - mPadding, getParent()->getRect().getHeight() - mPadding, &parent_screen_rect.mRight, &parent_screen_rect.mTop ); for (LLScrollingPanel* childp : mPanelList) { if (childp->isDead()) continue; const LLRect& local_rect = childp->getRect(); LLRect screen_rect; childp->localPointToScreen( 0, 0, &screen_rect.mLeft, &screen_rect.mBottom ); childp->localPointToScreen( local_rect.getWidth(), local_rect.getHeight(), &screen_rect.mRight, &screen_rect.mTop ); bool intersects = ( (screen_rect.mRight > parent_screen_rect.mLeft) && (screen_rect.mLeft < parent_screen_rect.mRight) ) && ( (screen_rect.mTop > parent_screen_rect.mBottom) && (screen_rect.mBottom < parent_screen_rect.mTop) ); childp->setVisible( intersects ); } } void LLScrollingPanelList::draw() { updatePanelVisiblilty(); LLUICtrl::draw(); } void LLScrollingPanelList::notifySizeChanged() { LLSD info; info["action"] = "size_changes"; info["height"] = getRect().getHeight(); info["width"] = getRect().getWidth(); notifyParent(info); } // EOF