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authorAndrei Karas <akaras@inbox.ru>2014-02-15 18:07:17 +0300
committerAndrei Karas <akaras@inbox.ru>2014-02-15 18:38:03 +0300
commitcde42202d69e178da73c698065deca54b24054fd (patch)
treed636965ecde85db8de36fa65735920826e8e191b /src/guichan/widgets/scrollarea.cpp
parent21e63bbf54679ec236d1f09ed435959ff6a04db2 (diff)
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move exguichan files into gui/base/
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diff --git a/src/guichan/widgets/scrollarea.cpp b/src/guichan/widgets/scrollarea.cpp
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-/*
- * The ManaPlus Client
- * Copyright (C) 2011-2014 The ManaPlus Developers
- *
- * This file is part of The ManaPlus Client.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-/* _______ __ __ __ ______ __ __ _______ __ __
- * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\
- * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
- * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / /
- * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / /
- * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
- * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
- *
- * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
- *
- *
- * Per Larsson a.k.a finalman
- * Olof Naessén a.k.a jansem/yakslem
- *
- * Visit: http://guichan.sourceforge.net
- *
- * License: (BSD)
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name of Guichan nor the names of its contributors may
- * be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-/*
- * For comments regarding functions please see the header file.
- */
-
-#include "guichan/widgets/scrollarea.hpp"
-
-#include "guichan/exception.hpp"
-#include "guichan/graphics.hpp"
-
-#include "debug.h"
-
-namespace gcn
-{
- ScrollArea::ScrollArea() :
- gcn::BasicContainer(),
- gcn::MouseListener(),
- mVScroll(0),
- mHScroll(0),
- mScrollbarWidth(12),
- mHPolicy(SHOW_AUTO),
- mVPolicy(SHOW_AUTO),
- mVBarVisible(false),
- mHBarVisible(false),
- mUpButtonPressed(false),
- mDownButtonPressed(false),
- mLeftButtonPressed(false),
- mRightButtonPressed(false),
- mUpButtonScrollAmount(10),
- mDownButtonScrollAmount(10),
- mLeftButtonScrollAmount(10),
- mRightButtonScrollAmount(10),
- mIsVerticalMarkerDragged(false),
- mIsHorizontalMarkerDragged(false),
- mHorizontalMarkerDragOffset(0),
- mVerticalMarkerDragOffset(0),
- mOpaque(true)
- {
- addMouseListener(this);
- }
-
- ScrollArea::ScrollArea(Widget *const content) :
- gcn::BasicContainer(),
- gcn::MouseListener(),
- mVScroll(0),
- mHScroll(0),
- mScrollbarWidth(12),
- mHPolicy(SHOW_AUTO),
- mVPolicy(SHOW_AUTO),
- mVBarVisible(false),
- mHBarVisible(false),
- mUpButtonPressed(false),
- mDownButtonPressed(false),
- mLeftButtonPressed(false),
- mRightButtonPressed(false),
- mUpButtonScrollAmount(10),
- mDownButtonScrollAmount(10),
- mLeftButtonScrollAmount(10),
- mRightButtonScrollAmount(10),
- mIsVerticalMarkerDragged(false),
- mIsHorizontalMarkerDragged(false),
- mHorizontalMarkerDragOffset(0),
- mVerticalMarkerDragOffset(0),
- mOpaque(true)
- {
- setContent(content);
- addMouseListener(this);
- }
-
- ScrollArea::ScrollArea(Widget *content,
- ScrollPolicy hPolicy,
- ScrollPolicy vPolicy) :
- gcn::BasicContainer(),
- gcn::MouseListener(),
- mVScroll(0),
- mHScroll(0),
- mScrollbarWidth(12),
- mHPolicy(hPolicy),
- mVPolicy(vPolicy),
- mVBarVisible(false),
- mHBarVisible(false),
- mUpButtonPressed(false),
- mDownButtonPressed(false),
- mLeftButtonPressed(false),
- mRightButtonPressed(false),
- mUpButtonScrollAmount(10),
- mDownButtonScrollAmount(10),
- mLeftButtonScrollAmount(10),
- mRightButtonScrollAmount(10),
- mIsVerticalMarkerDragged(false),
- mIsHorizontalMarkerDragged(false),
- mHorizontalMarkerDragOffset(0),
- mVerticalMarkerDragOffset(0),
- mOpaque(true)
- {
- setContent(content);
- addMouseListener(this);
- }
-
- ScrollArea::~ScrollArea()
- {
- setContent(nullptr);
- }
-
- void ScrollArea::setContent(Widget* widget)
- {
- if (widget)
- {
- clear();
- add(widget);
- widget->setPosition(0, 0);
- }
- else
- {
- clear();
- }
-
- checkPolicies();
- }
-
- Widget* ScrollArea::getContent()
- {
- if (!mWidgets.empty())
- return *mWidgets.begin();
-
- return nullptr;
- }
-
- void ScrollArea::setHorizontalScrollPolicy(ScrollPolicy hPolicy)
- {
- mHPolicy = hPolicy;
- checkPolicies();
- }
-
- ScrollArea::ScrollPolicy ScrollArea::getHorizontalScrollPolicy() const
- {
- return mHPolicy;
- }
-
- void ScrollArea::setVerticalScrollPolicy(ScrollPolicy vPolicy)
- {
- mVPolicy = vPolicy;
- checkPolicies();
- }
-
- ScrollArea::ScrollPolicy ScrollArea::getVerticalScrollPolicy() const
- {
- return mVPolicy;
- }
-
- void ScrollArea::setScrollPolicy(ScrollPolicy hPolicy,
- ScrollPolicy vPolicy)
- {
- mHPolicy = hPolicy;
- mVPolicy = vPolicy;
- checkPolicies();
- }
-
- void ScrollArea::setVerticalScrollAmount(int vScroll)
- {
- const int max = getVerticalMaxScroll();
-
- mVScroll = vScroll;
-
- if (vScroll > max)
- mVScroll = max;
-
- if (vScroll < 0)
- mVScroll = 0;
- }
-
- int ScrollArea::getVerticalScrollAmount() const
- {
- return mVScroll;
- }
-
- void ScrollArea::setHorizontalScrollAmount(int hScroll)
- {
- const int max = getHorizontalMaxScroll();
-
- mHScroll = hScroll;
-
- if (hScroll > max)
- mHScroll = max;
- else if (hScroll < 0)
- mHScroll = 0;
- }
-
- int ScrollArea::getHorizontalScrollAmount() const
- {
- return mHScroll;
- }
-
- void ScrollArea::setScrollAmount(int hScroll, int vScroll)
- {
- setHorizontalScrollAmount(hScroll);
- setVerticalScrollAmount(vScroll);
- }
-
- int ScrollArea::getHorizontalMaxScroll()
- {
- checkPolicies();
-
- const Widget *const content = getContent();
- if (!content)
- return 0;
-
- const int value = content->getWidth() - getChildrenArea().width +
- 2 * content->getFrameSize();
-
- if (value < 0)
- return 0;
-
- return value;
- }
-
- int ScrollArea::getVerticalMaxScroll()
- {
- checkPolicies();
-
- const Widget *const content = getContent();
- if (!content)
- return 0;
-
- int value;
-
- value = content->getHeight() - getChildrenArea().height +
- 2 * content->getFrameSize();
-
- if (value < 0)
- return 0;
-
- return value;
- }
-
- void ScrollArea::setScrollbarWidth(int width)
- {
- if (width > 0)
- mScrollbarWidth = width;
- else
- throw GCN_EXCEPTION("Width should be greater then 0.");
- }
-
- int ScrollArea::getScrollbarWidth() const
- {
- return mScrollbarWidth;
- }
-
- void ScrollArea::mouseReleased(MouseEvent& mouseEvent)
- {
- mUpButtonPressed = false;
- mDownButtonPressed = false;
- mLeftButtonPressed = false;
- mRightButtonPressed = false;
- mIsHorizontalMarkerDragged = false;
- mIsVerticalMarkerDragged = false;
-
- mouseEvent.consume();
- }
-
- void ScrollArea::draw(Graphics *graphics A_UNUSED)
- {
- }
-
- void ScrollArea::drawHBar(Graphics* graphics A_UNUSED)
- {
- }
-
- void ScrollArea::drawVBar(Graphics* graphics A_UNUSED)
- {
- }
-
- void ScrollArea::drawBackground(Graphics *graphics A_UNUSED)
- {
- }
-
- void ScrollArea::drawUpButton(Graphics* graphics A_UNUSED)
- {
- }
-
- void ScrollArea::drawDownButton(Graphics* graphics A_UNUSED)
- {
- }
-
- void ScrollArea::drawLeftButton(Graphics* graphics A_UNUSED)
- {
- }
-
- void ScrollArea::drawRightButton(Graphics* graphics A_UNUSED)
- {
- }
-
- void ScrollArea::drawVMarker(Graphics* graphics A_UNUSED)
- {
- }
-
- void ScrollArea::drawHMarker(Graphics* graphics A_UNUSED)
- {
- }
-
- void ScrollArea::logic()
- {
- BLOCK_START("ScrollArea::logic")
- checkPolicies();
-
- setVerticalScrollAmount(getVerticalScrollAmount());
- setHorizontalScrollAmount(getHorizontalScrollAmount());
-
- Widget *const content = getContent();
- if (content)
- {
- const int frameSize = content->getFrameSize();
- content->setPosition(-mHScroll + frameSize, -mVScroll + frameSize);
- content->logic();
- }
- BLOCK_END("ScrollArea::logic")
- }
-
- void ScrollArea::checkPolicies()
- {
- const int w = getWidth();
- const int h = getHeight();
-
- mHBarVisible = false;
- mVBarVisible = false;
-
- const Widget *const content = getContent();
- if (!content)
- {
- mHBarVisible = (mHPolicy == SHOW_ALWAYS);
- mVBarVisible = (mVPolicy == SHOW_ALWAYS);
- return;
- }
-
- if (mHPolicy == SHOW_AUTO &&
- mVPolicy == SHOW_AUTO)
- {
- if (content->getWidth() <= w
- && content->getHeight() <= h)
- {
- mHBarVisible = false;
- mVBarVisible = false;
- }
-
- if (content->getWidth() > w)
- {
- mHBarVisible = true;
- }
-
- if ((content->getHeight() > h)
- || (mHBarVisible && content->getHeight()
- > h - mScrollbarWidth))
- {
- mVBarVisible = true;
- }
-
- if (mVBarVisible && content->getWidth() > w - mScrollbarWidth)
- mHBarVisible = true;
-
- return;
- }
-
- switch (mHPolicy)
- {
- case SHOW_NEVER:
- mHBarVisible = false;
- break;
-
- case SHOW_ALWAYS:
- mHBarVisible = true;
- break;
-
- case SHOW_AUTO:
- if (mVPolicy == SHOW_NEVER)
- {
- mHBarVisible = (content->getWidth() > w);
- }
- else // (mVPolicy == SHOW_ALWAYS)
- {
- mHBarVisible = (content->getWidth()
- > w - mScrollbarWidth);
- }
- break;
-
- default:
- throw GCN_EXCEPTION("Horizontal scroll policy invalid.");
- }
-
- switch (mVPolicy)
- {
- case SHOW_NEVER:
- mVBarVisible = false;
- break;
-
- case SHOW_ALWAYS:
- mVBarVisible = true;
- break;
-
- case SHOW_AUTO:
- if (mHPolicy == SHOW_NEVER)
- {
- mVBarVisible = (content->getHeight() > h);
- }
- else // (mHPolicy == SHOW_ALWAYS)
- {
- mVBarVisible = (content->getHeight()
- > h - mScrollbarWidth);
- }
- break;
- default:
- throw GCN_EXCEPTION("Vertical scroll policy invalid.");
- }
- }
-
- Rectangle ScrollArea::getChildrenArea()
- {
- const Rectangle area = Rectangle(0, 0,
- mVBarVisible ? (getWidth() - mScrollbarWidth) : getWidth(),
- mHBarVisible ? (getHeight() - mScrollbarWidth) : getHeight());
-
- if (area.width < 0 || area.height < 0)
- return Rectangle();
-
- return area;
- }
-
- void ScrollArea::showWidgetPart(Widget* widget, Rectangle area)
- {
- const Widget *const content = getContent();
- if (widget != content)
- throw GCN_EXCEPTION("Widget not content widget");
-
- BasicContainer::showWidgetPart(widget, area);
-
- setHorizontalScrollAmount(content->getFrameSize()
- - content->getX());
- setVerticalScrollAmount(content->getFrameSize()
- - content->getY());
- }
-
- Widget *ScrollArea::getWidgetAt(int x, int y)
- {
- if (getChildrenArea().isPointInRect(x, y))
- return getContent();
-
- return nullptr;
- }
-
- void ScrollArea::mouseWheelMovedUp(MouseEvent& mouseEvent)
- {
- if (mouseEvent.isConsumed())
- return;
-
- setVerticalScrollAmount(getVerticalScrollAmount()
- - getChildrenArea().height / 8);
-
- mouseEvent.consume();
- }
-
- void ScrollArea::mouseWheelMovedDown(MouseEvent& mouseEvent)
- {
- if (mouseEvent.isConsumed())
- return;
-
- setVerticalScrollAmount(getVerticalScrollAmount()
- + getChildrenArea().height / 8);
-
- mouseEvent.consume();
- }
-
- void ScrollArea::setWidth(int width)
- {
- Widget::setWidth(width);
- checkPolicies();
- }
-
- void ScrollArea::setHeight(int height)
- {
- Widget::setHeight(height);
- checkPolicies();
- }
-
- void ScrollArea::setDimension(const Rectangle& dimension)
- {
- Widget::setDimension(dimension);
- checkPolicies();
- }
-
- void ScrollArea::setLeftButtonScrollAmount(int amount)
- {
- mLeftButtonScrollAmount = amount;
- }
-
- void ScrollArea::setRightButtonScrollAmount(int amount)
- {
- mRightButtonScrollAmount = amount;
- }
-
- void ScrollArea::setUpButtonScrollAmount(int amount)
- {
- mUpButtonScrollAmount = amount;
- }
-
- void ScrollArea::setDownButtonScrollAmount(int amount)
- {
- mDownButtonScrollAmount = amount;
- }
-
- int ScrollArea::getLeftButtonScrollAmount() const
- {
- return mLeftButtonScrollAmount;
- }
-
- int ScrollArea::getRightButtonScrollAmount() const
- {
- return mRightButtonScrollAmount;
- }
-
- int ScrollArea::getUpButtonScrollAmount() const
- {
- return mUpButtonScrollAmount;
- }
-
- int ScrollArea::getDownButtonScrollAmount() const
- {
- return mDownButtonScrollAmount;
- }
-
- void ScrollArea::setOpaque(bool opaque)
- {
- mOpaque = opaque;
- }
-
- bool ScrollArea::isOpaque() const
- {
- return mOpaque;
- }
-} // namespace gcn