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+/* _______ __ __ __ ______ __ __ _______ __ __
+ * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\
+ * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
+ * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / /
+ * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / /
+ * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
+ * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
+ *
+ * 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"
+
+namespace gcn
+{
+ ScrollArea::ScrollArea()
+ {
+ mVScroll = 0;
+ mHScroll = 0;
+ mHPolicy = SHOW_AUTO;
+ mVPolicy = SHOW_AUTO;
+ mScrollbarWidth = 12;
+ mUpButtonPressed = false;
+ mDownButtonPressed = false;
+ mLeftButtonPressed = false;
+ mRightButtonPressed = false;
+ mUpButtonScrollAmount = 10;
+ mDownButtonScrollAmount = 10;
+ mLeftButtonScrollAmount = 10;
+ mRightButtonScrollAmount = 10;
+ mIsVerticalMarkerDragged = false;
+ mIsHorizontalMarkerDragged =false;
+ mOpaque = true;
+
+ addMouseListener(this);
+ }
+
+ ScrollArea::ScrollArea(Widget *content)
+ {
+ mVScroll = 0;
+ mHScroll = 0;
+ mHPolicy = SHOW_AUTO;
+ mVPolicy = SHOW_AUTO;
+ mScrollbarWidth = 12;
+ mUpButtonPressed = false;
+ mDownButtonPressed = false;
+ mLeftButtonPressed = false;
+ mRightButtonPressed = false;
+ mUpButtonScrollAmount = 10;
+ mDownButtonScrollAmount = 10;
+ mLeftButtonScrollAmount = 10;
+ mRightButtonScrollAmount = 10;
+ mIsVerticalMarkerDragged = false;
+ mIsHorizontalMarkerDragged =false;
+ mOpaque = true;
+
+ setContent(content);
+ addMouseListener(this);
+ }
+
+ ScrollArea::ScrollArea(Widget *content,
+ ScrollPolicy hPolicy,
+ ScrollPolicy vPolicy)
+ {
+ mVScroll = 0;
+ mHScroll = 0;
+ mHPolicy = hPolicy;
+ mVPolicy = vPolicy;
+ mScrollbarWidth = 12;
+ mUpButtonPressed = false;
+ mDownButtonPressed = false;
+ mLeftButtonPressed = false;
+ mRightButtonPressed = false;
+ mUpButtonScrollAmount = 10;
+ mDownButtonScrollAmount = 10;
+ mLeftButtonScrollAmount = 10;
+ mRightButtonScrollAmount = 10;
+ mIsVerticalMarkerDragged = false;
+ mIsHorizontalMarkerDragged =false;
+ mOpaque = true;
+
+ setContent(content);
+ addMouseListener(this);
+ }
+
+ ScrollArea::~ScrollArea()
+ {
+ setContent(NULL);
+ }
+
+ void ScrollArea::setContent(Widget* widget)
+ {
+ if (widget != NULL)
+ {
+ clear();
+ add(widget);
+ widget->setPosition(0,0);
+ }
+ else
+ {
+ clear();
+ }
+
+ checkPolicies();
+ }
+
+ Widget* ScrollArea::getContent()
+ {
+ if (mWidgets.size() > 0)
+ {
+ return *mWidgets.begin();
+ }
+
+ return NULL;
+ }
+
+ 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)
+ {
+ 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)
+ {
+ 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();
+
+ if (getContent() == NULL)
+ {
+ return 0;
+ }
+
+ int value = getContent()->getWidth() - getChildrenArea().width +
+ 2 * getContent()->getFrameSize();
+
+ if (value < 0)
+ {
+ return 0;
+ }
+
+ return value;
+ }
+
+ int ScrollArea::getVerticalMaxScroll()
+ {
+ checkPolicies();
+
+ if (getContent() == NULL)
+ {
+ return 0;
+ }
+
+ int value;
+
+ value = getContent()->getHeight() - getChildrenArea().height +
+ 2 * getContent()->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::mousePressed(MouseEvent& mouseEvent)
+ {
+ int x = mouseEvent.getX();
+ int y = mouseEvent.getY();
+
+ if (getUpButtonDimension().isPointInRect(x, y))
+ {
+ setVerticalScrollAmount(getVerticalScrollAmount()
+ - mUpButtonScrollAmount);
+ mUpButtonPressed = true;
+ }
+ else if (getDownButtonDimension().isPointInRect(x, y))
+ {
+ setVerticalScrollAmount(getVerticalScrollAmount()
+ + mDownButtonScrollAmount);
+ mDownButtonPressed = true;
+ }
+ else if (getLeftButtonDimension().isPointInRect(x, y))
+ {
+ setHorizontalScrollAmount(getHorizontalScrollAmount()
+ - mLeftButtonScrollAmount);
+ mLeftButtonPressed = true;
+ }
+ else if (getRightButtonDimension().isPointInRect(x, y))
+ {
+ setHorizontalScrollAmount(getHorizontalScrollAmount()
+ + mRightButtonScrollAmount);
+ mRightButtonPressed = true;
+ }
+ else if (getVerticalMarkerDimension().isPointInRect(x, y))
+ {
+ mIsHorizontalMarkerDragged = false;
+ mIsVerticalMarkerDragged = true;
+
+ mVerticalMarkerDragOffset = y - getVerticalMarkerDimension().y;
+ }
+ else if (getVerticalBarDimension().isPointInRect(x,y))
+ {
+ if (y < getVerticalMarkerDimension().y)
+ {
+ setVerticalScrollAmount(getVerticalScrollAmount()
+ - (int)(getChildrenArea().height * 0.95));
+ }
+ else
+ {
+ setVerticalScrollAmount(getVerticalScrollAmount()
+ + (int)(getChildrenArea().height * 0.95));
+ }
+ }
+ else if (getHorizontalMarkerDimension().isPointInRect(x, y))
+ {
+ mIsHorizontalMarkerDragged = true;
+ mIsVerticalMarkerDragged = false;
+
+ mHorizontalMarkerDragOffset = x - getHorizontalMarkerDimension().x;
+ }
+ else if (getHorizontalBarDimension().isPointInRect(x,y))
+ {
+ if (x < getHorizontalMarkerDimension().x)
+ {
+ setHorizontalScrollAmount(getHorizontalScrollAmount()
+ - (int)(getChildrenArea().width * 0.95));
+ }
+ else
+ {
+ setHorizontalScrollAmount(getHorizontalScrollAmount()
+ + (int)(getChildrenArea().width * 0.95));
+ }
+ }
+ }
+
+ void ScrollArea::mouseReleased(MouseEvent& mouseEvent)
+ {
+ mUpButtonPressed = false;
+ mDownButtonPressed = false;
+ mLeftButtonPressed = false;
+ mRightButtonPressed = false;
+ mIsHorizontalMarkerDragged = false;
+ mIsVerticalMarkerDragged = false;
+
+ mouseEvent.consume();
+ }
+
+ void ScrollArea::mouseDragged(MouseEvent& mouseEvent)
+ {
+ if (mIsVerticalMarkerDragged)
+ {
+ int pos = mouseEvent.getY() - getVerticalBarDimension().y - mVerticalMarkerDragOffset;
+ int length = getVerticalMarkerDimension().height;
+
+ Rectangle barDim = getVerticalBarDimension();
+
+ if ((barDim.height - length) > 0)
+ {
+ setVerticalScrollAmount((getVerticalMaxScroll() * pos)
+ / (barDim.height - length));
+ }
+ else
+ {
+ setVerticalScrollAmount(0);
+ }
+ }
+
+ if (mIsHorizontalMarkerDragged)
+ {
+ int pos = mouseEvent.getX() - getHorizontalBarDimension().x - mHorizontalMarkerDragOffset;
+ int length = getHorizontalMarkerDimension().width;
+
+ Rectangle barDim = getHorizontalBarDimension();
+
+ if ((barDim.width - length) > 0)
+ {
+ setHorizontalScrollAmount((getHorizontalMaxScroll() * pos)
+ / (barDim.width - length));
+ }
+ else
+ {
+ setHorizontalScrollAmount(0);
+ }
+ }
+
+ mouseEvent.consume();
+ }
+
+ void ScrollArea::draw(Graphics *graphics)
+ {
+ drawBackground(graphics);
+
+ if (mVBarVisible)
+ {
+ drawUpButton(graphics);
+ drawDownButton(graphics);
+ drawVBar(graphics);
+ drawVMarker(graphics);
+ }
+
+ if (mHBarVisible)
+ {
+ drawLeftButton(graphics);
+ drawRightButton(graphics);
+ drawHBar(graphics);
+ drawHMarker(graphics);
+ }
+
+ if (mHBarVisible && mVBarVisible)
+ {
+ graphics->setColor(getBaseColor());
+ graphics->fillRectangle(Rectangle(getWidth() - mScrollbarWidth,
+ getHeight() - mScrollbarWidth,
+ mScrollbarWidth,
+ mScrollbarWidth));
+ }
+
+ drawChildren(graphics);
+ }
+
+ void ScrollArea::drawHBar(Graphics* graphics)
+ {
+ Rectangle dim = getHorizontalBarDimension();
+
+ graphics->pushClipArea(dim);
+
+ int alpha = getBaseColor().a;
+ Color trackColor = getBaseColor() - 0x101010;
+ trackColor.a = alpha;
+ Color shadowColor = getBaseColor() - 0x303030;
+ shadowColor.a = alpha;
+
+ graphics->setColor(trackColor);
+ graphics->fillRectangle(Rectangle(0, 0, dim.width, dim.height));
+
+ graphics->setColor(shadowColor);
+ graphics->drawLine(0, 0, dim.width, 0);
+
+ graphics->popClipArea();
+ }
+
+ void ScrollArea::drawVBar(Graphics* graphics)
+ {
+ Rectangle dim = getVerticalBarDimension();
+
+ graphics->pushClipArea(dim);
+
+ int alpha = getBaseColor().a;
+ Color trackColor = getBaseColor() - 0x101010;
+ trackColor.a = alpha;
+ Color shadowColor = getBaseColor() - 0x303030;
+ shadowColor.a = alpha;
+
+ graphics->setColor(trackColor);
+ graphics->fillRectangle(Rectangle(0, 0, dim.width, dim.height));
+
+ graphics->setColor(shadowColor);
+ graphics->drawLine(0, 0, 0, dim.height);
+
+ graphics->popClipArea();
+ }
+
+ void ScrollArea::drawBackground(Graphics *graphics)
+ {
+ if (isOpaque())
+ {
+ graphics->setColor(getBackgroundColor());
+ graphics->fillRectangle(getChildrenArea());
+ }
+ }
+
+ void ScrollArea::drawUpButton(Graphics* graphics)
+ {
+ Rectangle dim = getUpButtonDimension();
+ graphics->pushClipArea(dim);
+
+ Color highlightColor;
+ Color shadowColor;
+ Color faceColor;
+ int offset;
+ int alpha = getBaseColor().a;
+
+ if (mUpButtonPressed)
+ {
+ faceColor = getBaseColor() - 0x303030;
+ faceColor.a = alpha;
+ highlightColor = faceColor - 0x303030;
+ highlightColor.a = alpha;
+ shadowColor = getBaseColor();
+ shadowColor.a = alpha;
+
+ offset = 1;
+ }
+ else
+ {
+ faceColor = getBaseColor();
+ faceColor.a = alpha;
+ highlightColor = faceColor + 0x303030;
+ highlightColor.a = alpha;
+ shadowColor = faceColor - 0x303030;
+ shadowColor.a = alpha;
+
+ offset = 0;
+ }
+
+ graphics->setColor(faceColor);
+ graphics->fillRectangle(Rectangle(0, 0, dim.width, dim.height));
+
+ graphics->setColor(highlightColor);
+ graphics->drawLine(0, 0, dim.width - 1, 0);
+ graphics->drawLine(0, 1, 0, dim.height - 1);
+
+ graphics->setColor(shadowColor);
+ graphics->drawLine(dim.width - 1, 0, dim.width - 1, dim.height - 1);
+ graphics->drawLine(1, dim.height - 1, dim.width - 1, dim.height - 1);
+
+ graphics->setColor(getForegroundColor());
+
+ int i;
+ int w = dim.height / 2;
+ int h = w / 2 + 2;
+ for (i = 0; i < w / 2; ++i)
+ {
+ graphics->drawLine(w - i + offset,
+ i + h + offset,
+ w + i + offset,
+ i + h + offset);
+ }
+
+ graphics->popClipArea();
+ }
+
+ void ScrollArea::drawDownButton(Graphics* graphics)
+ {
+ Rectangle dim = getDownButtonDimension();
+ graphics->pushClipArea(dim);
+
+ Color highlightColor;
+ Color shadowColor;
+ Color faceColor;
+ int offset;
+ int alpha = getBaseColor().a;
+
+ if (mDownButtonPressed)
+ {
+ faceColor = getBaseColor() - 0x303030;
+ faceColor.a = alpha;
+ highlightColor = faceColor - 0x303030;
+ highlightColor.a = alpha;
+ shadowColor = getBaseColor();
+ shadowColor.a = alpha;
+
+ offset = 1;
+ }
+ else
+ {
+ faceColor = getBaseColor();
+ faceColor.a = alpha;
+ highlightColor = faceColor + 0x303030;
+ highlightColor.a = alpha;
+ shadowColor = faceColor - 0x303030;
+ shadowColor.a = alpha;
+
+ offset = 0;
+ }
+
+ graphics->setColor(faceColor);
+ graphics->fillRectangle(Rectangle(0, 0, dim.width, dim.height));
+
+ graphics->setColor(highlightColor);
+ graphics->drawLine(0, 0, dim.width - 1, 0);
+ graphics->drawLine(0, 1, 0, dim.height - 1);
+
+ graphics->setColor(shadowColor);
+ graphics->drawLine(dim.width - 1, 0, dim.width - 1, dim.height - 1);
+ graphics->drawLine(1, dim.height - 1, dim.width - 1, dim.height - 1);
+
+ graphics->setColor(getForegroundColor());
+
+ int i;
+ int w = dim.height / 2;
+ int h = w + 1;
+ for (i = 0; i < w / 2; ++i)
+ {
+ graphics->drawLine(w - i + offset,
+ -i + h + offset,
+ w + i + offset,
+ -i + h + offset);
+ }
+
+ graphics->popClipArea();
+ }
+
+ void ScrollArea::drawLeftButton(Graphics* graphics)
+ {
+ Rectangle dim = getLeftButtonDimension();
+ graphics->pushClipArea(dim);
+
+ Color highlightColor;
+ Color shadowColor;
+ Color faceColor;
+ int offset;
+ int alpha = getBaseColor().a;
+
+ if (mLeftButtonPressed)
+ {
+ faceColor = getBaseColor() - 0x303030;
+ faceColor.a = alpha;
+ highlightColor = faceColor - 0x303030;
+ highlightColor.a = alpha;
+ shadowColor = getBaseColor();
+ shadowColor.a = alpha;
+
+ offset = 1;
+ }
+ else
+ {
+ faceColor = getBaseColor();
+ faceColor.a = alpha;
+ highlightColor = faceColor + 0x303030;
+ highlightColor.a = alpha;
+ shadowColor = faceColor - 0x303030;
+ shadowColor.a = alpha;
+
+ offset = 0;
+ }
+
+ graphics->setColor(faceColor);
+ graphics->fillRectangle(Rectangle(0, 0, dim.width, dim.height));
+
+ graphics->setColor(highlightColor);
+ graphics->drawLine(0, 0, dim.width - 1, 0);
+ graphics->drawLine(0, 1, 0, dim.height - 1);
+
+ graphics->setColor(shadowColor);
+ graphics->drawLine(dim.width - 1, 0, dim.width - 1, dim.height - 1);
+ graphics->drawLine(1, dim.height - 1, dim.width - 1, dim.height - 1);
+
+ graphics->setColor(getForegroundColor());
+
+ int i;
+ int w = dim.width / 2;
+ int h = w - 2;
+ for (i = 0; i < w / 2; ++i)
+ {
+ graphics->drawLine(i + h + offset,
+ w - i + offset,
+ i + h + offset,
+ w + i + offset);
+ }
+
+ graphics->popClipArea();
+ }
+
+ void ScrollArea::drawRightButton(Graphics* graphics)
+ {
+ Rectangle dim = getRightButtonDimension();
+ graphics->pushClipArea(dim);
+
+ Color highlightColor;
+ Color shadowColor;
+ Color faceColor;
+ int offset;
+ int alpha = getBaseColor().a;
+
+ if (mRightButtonPressed)
+ {
+ faceColor = getBaseColor() - 0x303030;
+ faceColor.a = alpha;
+ highlightColor = faceColor - 0x303030;
+ highlightColor.a = alpha;
+ shadowColor = getBaseColor();
+ shadowColor.a = alpha;
+
+ offset = 1;
+ }
+ else
+ {
+ faceColor = getBaseColor();
+ faceColor.a = alpha;
+ highlightColor = faceColor + 0x303030;
+ highlightColor.a = alpha;
+ shadowColor = faceColor - 0x303030;
+ shadowColor.a = alpha;
+
+ offset = 0;
+ }
+
+ graphics->setColor(faceColor);
+ graphics->fillRectangle(Rectangle(0, 0, dim.width, dim.height));
+
+ graphics->setColor(highlightColor);
+ graphics->drawLine(0, 0, dim.width - 1, 0);
+ graphics->drawLine(0, 1, 0, dim.height - 1);
+
+ graphics->setColor(shadowColor);
+ graphics->drawLine(dim.width - 1, 0, dim.width - 1, dim.height - 1);
+ graphics->drawLine(1, dim.height - 1, dim.width - 1, dim.height - 1);
+
+ graphics->setColor(getForegroundColor());
+
+ int i;
+ int w = dim.width / 2;
+ int h = w + 1;
+ for (i = 0; i < w / 2; ++i)
+ {
+ graphics->drawLine(-i + h + offset,
+ w - i + offset,
+ -i + h + offset,
+ w + i + offset);
+ }
+
+ graphics->popClipArea();
+ }
+
+ void ScrollArea::drawVMarker(Graphics* graphics)
+ {
+ Rectangle dim = getVerticalMarkerDimension();
+ graphics->pushClipArea(dim);
+
+ int alpha = getBaseColor().a;
+ Color faceColor = getBaseColor();
+ faceColor.a = alpha;
+ Color highlightColor = faceColor + 0x303030;
+ highlightColor.a = alpha;
+ Color shadowColor = faceColor - 0x303030;
+ shadowColor.a = alpha;
+
+ graphics->setColor(faceColor);
+ graphics->fillRectangle(Rectangle(1, 1, dim.width - 1, dim.height - 1));
+
+ graphics->setColor(highlightColor);
+ graphics->drawLine(0, 0, dim.width - 1, 0);
+ graphics->drawLine(0, 1, 0, dim.height - 1);
+
+ graphics->setColor(shadowColor);
+ graphics->drawLine(1, dim.height - 1, dim.width - 1, dim.height - 1);
+ graphics->drawLine(dim.width - 1, 0, dim.width - 1, dim.height - 1);
+
+ graphics->popClipArea();
+ }
+
+ void ScrollArea::drawHMarker(Graphics* graphics)
+ {
+ Rectangle dim = getHorizontalMarkerDimension();
+ graphics->pushClipArea(dim);
+
+ int alpha = getBaseColor().a;
+ Color faceColor = getBaseColor();
+ faceColor.a = alpha;
+ Color highlightColor = faceColor + 0x303030;
+ highlightColor.a = alpha;
+ Color shadowColor = faceColor - 0x303030;
+ shadowColor.a = alpha;
+
+ graphics->setColor(faceColor);
+ graphics->fillRectangle(Rectangle(1, 1, dim.width - 1, dim.height - 1));
+
+ graphics->setColor(highlightColor);
+ graphics->drawLine(0, 0, dim.width - 1, 0);
+ graphics->drawLine(0, 1, 0, dim.height - 1);
+
+ graphics->setColor(shadowColor);
+ graphics->drawLine(1, dim.height - 1, dim.width - 1, dim.height - 1);
+ graphics->drawLine(dim.width - 1, 0, dim.width - 1, dim.height - 1);
+
+ graphics->popClipArea();
+ }
+
+ void ScrollArea::logic()
+ {
+ checkPolicies();
+
+ setVerticalScrollAmount(getVerticalScrollAmount());
+ setHorizontalScrollAmount(getHorizontalScrollAmount());
+
+ if (getContent() != NULL)
+ {
+ getContent()->setPosition(-mHScroll + getContent()->getFrameSize(),
+ -mVScroll + getContent()->getFrameSize());
+ getContent()->logic();
+ }
+ }
+
+ void ScrollArea::checkPolicies()
+ {
+ int w = getWidth();
+ int h = getHeight();
+
+ mHBarVisible = false;
+ mVBarVisible = false;
+
+
+ if (!getContent())
+ {
+ mHBarVisible = (mHPolicy == SHOW_ALWAYS);
+ mVBarVisible = (mVPolicy == SHOW_ALWAYS);
+ return;
+ }
+
+ if (mHPolicy == SHOW_AUTO &&
+ mVPolicy == SHOW_AUTO)
+ {
+ if (getContent()->getWidth() <= w
+ && getContent()->getHeight() <= h)
+ {
+ mHBarVisible = false;
+ mVBarVisible = false;
+ }
+
+ if (getContent()->getWidth() > w)
+ {
+ mHBarVisible = true;
+ }
+
+ if ((getContent()->getHeight() > h)
+ || (mHBarVisible && getContent()->getHeight() > h - mScrollbarWidth))
+ {
+ mVBarVisible = true;
+ }
+
+ if (mVBarVisible && getContent()->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 = getContent()->getWidth() > w;
+ }
+ else // (mVPolicy == SHOW_ALWAYS)
+ {
+ mHBarVisible = getContent()->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 = getContent()->getHeight() > h;
+ }
+ else // (mHPolicy == SHOW_ALWAYS)
+ {
+ mVBarVisible = getContent()->getHeight() > h - mScrollbarWidth;
+ }
+ break;
+ default:
+ throw GCN_EXCEPTION("Vertical scroll policy invalid.");
+ }
+ }
+
+ Rectangle ScrollArea::getUpButtonDimension()
+ {
+ if (!mVBarVisible)
+ {
+ return Rectangle(0, 0, 0, 0);
+ }
+
+ return Rectangle(getWidth() - mScrollbarWidth,
+ 0,
+ mScrollbarWidth,
+ mScrollbarWidth);
+ }
+
+ Rectangle ScrollArea::getDownButtonDimension()
+ {
+ if (!mVBarVisible)
+ {
+ return Rectangle(0, 0, 0, 0);
+ }
+
+ if (mVBarVisible && mHBarVisible)
+ {
+ return Rectangle(getWidth() - mScrollbarWidth,
+ getHeight() - mScrollbarWidth*2,
+ mScrollbarWidth,
+ mScrollbarWidth);
+ }
+
+ return Rectangle(getWidth() - mScrollbarWidth,
+ getHeight() - mScrollbarWidth,
+ mScrollbarWidth,
+ mScrollbarWidth);
+ }
+
+ Rectangle ScrollArea::getLeftButtonDimension()
+ {
+ if (!mHBarVisible)
+ {
+ return Rectangle(0, 0, 0, 0);
+ }
+
+ return Rectangle(0,
+ getHeight() - mScrollbarWidth,
+ mScrollbarWidth,
+ mScrollbarWidth);
+ }
+
+ Rectangle ScrollArea::getRightButtonDimension()
+ {
+ if (!mHBarVisible)
+ {
+ return Rectangle(0, 0, 0, 0);
+ }
+
+ if (mVBarVisible && mHBarVisible)
+ {
+ return Rectangle(getWidth() - mScrollbarWidth*2,
+ getHeight() - mScrollbarWidth,
+ mScrollbarWidth,
+ mScrollbarWidth);
+ }
+
+ return Rectangle(getWidth() - mScrollbarWidth,
+ getHeight() - mScrollbarWidth,
+ mScrollbarWidth,
+ mScrollbarWidth);
+ }
+
+ Rectangle ScrollArea::getChildrenArea()
+ {
+ Rectangle area = Rectangle(0,
+ 0,
+ mVBarVisible ? getWidth() - mScrollbarWidth : getWidth(),
+ mHBarVisible ? getHeight() - mScrollbarWidth : getHeight());
+
+ if (area.width < 0 || area.height < 0)
+ return Rectangle();
+
+ return area;
+ }
+
+ Rectangle ScrollArea::getVerticalBarDimension()
+ {
+ if (!mVBarVisible)
+ {
+ return Rectangle(0, 0, 0, 0);
+ }
+
+ if (mHBarVisible)
+ {
+ return Rectangle(getWidth() - mScrollbarWidth,
+ getUpButtonDimension().height,
+ mScrollbarWidth,
+ getHeight()
+ - getUpButtonDimension().height
+ - getDownButtonDimension().height
+ - mScrollbarWidth);
+ }
+
+ return Rectangle(getWidth() - mScrollbarWidth,
+ getUpButtonDimension().height,
+ mScrollbarWidth,
+ getHeight()
+ - getUpButtonDimension().height
+ - getDownButtonDimension().height);
+ }
+
+ Rectangle ScrollArea::getHorizontalBarDimension()
+ {
+ if (!mHBarVisible)
+ {
+ return Rectangle(0, 0, 0, 0);
+ }
+
+ if (mVBarVisible)
+ {
+ return Rectangle(getLeftButtonDimension().width,
+ getHeight() - mScrollbarWidth,
+ getWidth()
+ - getLeftButtonDimension().width
+ - getRightButtonDimension().width
+ - mScrollbarWidth,
+ mScrollbarWidth);
+ }
+
+ return Rectangle(getLeftButtonDimension().width,
+ getHeight() - mScrollbarWidth,
+ getWidth()
+ - getLeftButtonDimension().width
+ - getRightButtonDimension().width,
+ mScrollbarWidth);
+ }
+
+ Rectangle ScrollArea::getVerticalMarkerDimension()
+ {
+ if (!mVBarVisible)
+ {
+ return Rectangle(0, 0, 0, 0);
+ }
+
+ int length, pos;
+ Rectangle barDim = getVerticalBarDimension();
+
+ if (getContent() && getContent()->getHeight() != 0)
+ {
+ length = (barDim.height * getChildrenArea().height)
+ / getContent()->getHeight();
+ }
+ else
+ {
+ length = barDim.height;
+ }
+
+ if (length < mScrollbarWidth)
+ {
+ length = mScrollbarWidth;
+ }
+
+ if (length > barDim.height)
+ {
+ length = barDim.height;
+ }
+
+ if (getVerticalMaxScroll() != 0)
+ {
+ pos = ((barDim.height - length) * getVerticalScrollAmount())
+ / getVerticalMaxScroll();
+ }
+ else
+ {
+ pos = 0;
+ }
+
+ return Rectangle(barDim.x, barDim.y + pos, mScrollbarWidth, length);
+ }
+
+ Rectangle ScrollArea::getHorizontalMarkerDimension()
+ {
+ if (!mHBarVisible)
+ {
+ return Rectangle(0, 0, 0, 0);
+ }
+
+ int length, pos;
+ Rectangle barDim = getHorizontalBarDimension();
+
+ if (getContent() && getContent()->getWidth() != 0)
+ {
+ length = (barDim.width * getChildrenArea().width)
+ / getContent()->getWidth();
+ }
+ else
+ {
+ length = barDim.width;
+ }
+
+ if (length < mScrollbarWidth)
+ {
+ length = mScrollbarWidth;
+ }
+
+ if (length > barDim.width)
+ {
+ length = barDim.width;
+ }
+
+ if (getHorizontalMaxScroll() != 0)
+ {
+ pos = ((barDim.width - length) * getHorizontalScrollAmount())
+ / getHorizontalMaxScroll();
+ }
+ else
+ {
+ pos = 0;
+ }
+
+ return Rectangle(barDim.x + pos, barDim.y, length, mScrollbarWidth);
+ }
+
+ void ScrollArea::showWidgetPart(Widget* widget, Rectangle area)
+ {
+ if (widget != getContent())
+ {
+ throw GCN_EXCEPTION("Widget not content widget");
+ }
+
+ BasicContainer::showWidgetPart(widget, area);
+
+ setHorizontalScrollAmount(getContent()->getFrameSize() - getContent()->getX());
+ setVerticalScrollAmount(getContent()->getFrameSize() - getContent()->getY());
+ }
+
+ Widget *ScrollArea::getWidgetAt(int x, int y)
+ {
+ if (getChildrenArea().isPointInRect(x, y))
+ {
+ return getContent();
+ }
+
+ return NULL;
+ }
+
+ 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;
+ }
+}
+
+/*
+ * Wow! This is a looooong source file.
+ */
generated by cgit v1.2.3-60-g2f50 (git 2.42.0) at 2024-07-11 08:12:38 +0000