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-rw-r--r--src/guichan/widgets/dropdown.cpp574
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diff --git a/src/guichan/widgets/dropdown.cpp b/src/guichan/widgets/dropdown.cpp
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--- a/src/guichan/widgets/dropdown.cpp
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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.
- */
-
-#include "guichan/widgets/dropdown.hpp"
-
-#include "guichan/exception.hpp"
-#include "guichan/font.hpp"
-#include "guichan/graphics.hpp"
-#include "guichan/key.hpp"
-#include "guichan/listmodel.hpp"
-#include "guichan/mouseinput.hpp"
-#include "guichan/widgets/listbox.hpp"
-#include "guichan/widgets/scrollarea.hpp"
-
-#include "debug.h"
-
-namespace gcn
-{
- DropDown::DropDown(ListModel *listModel,
- ScrollArea *scrollArea,
- ListBox *listBox)
- {
- setWidth(100);
- setFocusable(true);
- mDroppedDown = false;
- mPushed = false;
- mIsDragged = false;
-
- setInternalFocusHandler(&mInternalFocusHandler);
-
- mInternalScrollArea = (scrollArea == NULL);
- mInternalListBox = (listBox == NULL);
-
- if (mInternalScrollArea)
- mScrollArea = new ScrollArea();
- else
- mScrollArea = scrollArea;
-
- if (mInternalListBox)
- mListBox = new ListBox();
- else
- mListBox = listBox;
-
- mScrollArea->setContent(mListBox);
- add(mScrollArea);
-
- mListBox->addActionListener(this);
- mListBox->addSelectionListener(this);
-
- setListModel(listModel);
-
- if (mListBox->getSelected() < 0)
- mListBox->setSelected(0);
-
- addMouseListener(this);
- addKeyListener(this);
- addFocusListener(this);
-
- adjustHeight();
- }
-
- DropDown::~DropDown()
- {
- if (widgetExists(mListBox))
- {
- mListBox->removeActionListener(this);
- mListBox->removeSelectionListener(this);
- }
-
- if (mInternalScrollArea)
- {
- delete mScrollArea;
- mScrollArea = 0;
- }
-
- if (mInternalListBox)
- {
- delete mListBox;
- mListBox = 0;
- }
-
- setInternalFocusHandler(NULL);
- }
-
- void DropDown::draw(Graphics* graphics)
- {
- int h;
-
- if (mDroppedDown)
- h = mFoldedUpHeight;
- else
- h = getHeight();
-
- Color faceColor = getBaseColor();
- Color highlightColor, shadowColor;
- int alpha = getBaseColor().a;
- highlightColor = faceColor + 0x303030;
- highlightColor.a = alpha;
- shadowColor = faceColor - 0x303030;
- shadowColor.a = alpha;
-
- // Draw a border.
- graphics->setColor(shadowColor);
- graphics->drawLine(0, 0, getWidth() - 1, 0);
- graphics->drawLine(0, 1, 0, h - 2);
- graphics->setColor(highlightColor);
- graphics->drawLine(getWidth() - 1, 1, getWidth() - 1, h - 1);
- graphics->drawLine(0, h - 1, getWidth() - 1, h - 1);
-
- // Push a clip area so the other drawings don't need to worry
- // about the border.
- graphics->pushClipArea(Rectangle(1, 1, getWidth() - 2, h - 2));
- const Rectangle currentClipArea = graphics->getCurrentClipArea();
-
- graphics->setColor(getBackgroundColor());
- graphics->fillRectangle(Rectangle(0, 0,
- currentClipArea.width, currentClipArea.height));
-
- if (isFocused())
- {
- graphics->setColor(getSelectionColor());
- graphics->fillRectangle(Rectangle(0, 0,
- currentClipArea.width - currentClipArea.height,
- currentClipArea.height));
- graphics->setColor(getForegroundColor());
- }
-
- if (mListBox->getListModel()
- && mListBox->getSelected() >= 0)
- {
- graphics->setColor(getForegroundColor());
- graphics->setFont(getFont());
-
- graphics->drawText(mListBox->getListModel()->getElementAt(
- mListBox->getSelected()), 1, 0);
- }
-
- // Push a clip area before drawing the button.
- graphics->pushClipArea(Rectangle(
- currentClipArea.width - currentClipArea.height,
- 0, currentClipArea.height, currentClipArea.height));
- drawButton(graphics);
- graphics->popClipArea();
- graphics->popClipArea();
-
- if (mDroppedDown)
- {
- // Draw a border around the children.
- graphics->setColor(shadowColor);
- graphics->drawRectangle(Rectangle(0, mFoldedUpHeight,
- getWidth(), getHeight() - mFoldedUpHeight));
- drawChildren(graphics);
- }
- }
-
- void DropDown::drawButton(Graphics *graphics)
- {
- Color faceColor, highlightColor, shadowColor;
- int offset;
- int alpha = getBaseColor().a;
-
- if (mPushed)
- {
- faceColor = getBaseColor() - 0x303030;
- faceColor.a = alpha;
- highlightColor = faceColor - 0x303030;
- highlightColor.a = alpha;
- shadowColor = faceColor + 0x303030;
- 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;
- }
-
- const Rectangle currentClipArea = graphics->getCurrentClipArea();
- graphics->setColor(highlightColor);
- graphics->drawLine(0, 0, currentClipArea.width - 1, 0);
- graphics->drawLine(0, 1, 0, currentClipArea.height - 1);
- graphics->setColor(shadowColor);
- graphics->drawLine(currentClipArea.width - 1, 1,
- currentClipArea.width - 1, currentClipArea.height - 1);
- graphics->drawLine(1, currentClipArea.height - 1,
- currentClipArea.width - 2, currentClipArea.height - 1);
-
- graphics->setColor(faceColor);
- graphics->fillRectangle(Rectangle(1, 1,
- currentClipArea.width - 2, currentClipArea.height - 2));
-
- graphics->setColor(getForegroundColor());
-
- int i;
- int n = currentClipArea.height / 3;
- int dx = currentClipArea.height / 2;
- int dy = (currentClipArea.height * 2) / 3;
- for (i = 0; i < n; i++)
- {
- graphics->drawLine(dx - i + offset, dy - i + offset,
- dx + i + offset, dy - i + offset);
- }
- }
-
- int DropDown::getSelected() const
- {
- return mListBox->getSelected();
- }
-
- void DropDown::setSelected(int selected)
- {
- if (selected >= 0)
- mListBox->setSelected(selected);
- }
-
- void DropDown::keyPressed(KeyEvent& keyEvent)
- {
- if (keyEvent.isConsumed())
- return;
-
- Key key = keyEvent.getKey();
-
- if ((key.getValue() == Key::ENTER || key.getValue() == Key::SPACE)
- && !mDroppedDown)
- {
- dropDown();
- keyEvent.consume();
- }
- else if (key.getValue() == Key::UP)
- {
- setSelected(getSelected() - 1);
- keyEvent.consume();
- }
- else if (key.getValue() == Key::DOWN)
- {
- setSelected(getSelected() + 1);
- keyEvent.consume();
- }
- }
-
- void DropDown::mousePressed(MouseEvent& mouseEvent)
- {
- // If we have a mouse press on the widget.
- if (0 <= mouseEvent.getY()
- && mouseEvent.getY() < getHeight()
- && mouseEvent.getX() >= 0
- && mouseEvent.getX() < getWidth()
- && mouseEvent.getButton() == MouseEvent::LEFT
- && !mDroppedDown
- && mouseEvent.getSource() == this)
- {
- mPushed = true;
- dropDown();
- requestModalMouseInputFocus();
- }
- // Fold up the listbox if the upper part is clicked after fold down
- else if (0 <= mouseEvent.getY()
- && mouseEvent.getY() < mFoldedUpHeight
- && mouseEvent.getX() >= 0
- && mouseEvent.getX() < getWidth()
- && mouseEvent.getButton() == MouseEvent::LEFT
- && mDroppedDown
- && mouseEvent.getSource() == this)
- {
- mPushed = false;
- foldUp();
- releaseModalMouseInputFocus();
- }
- // If we have a mouse press outside the widget
- else if (0 > mouseEvent.getY()
- || mouseEvent.getY() >= getHeight()
- || mouseEvent.getX() < 0
- || mouseEvent.getX() >= getWidth())
- {
- mPushed = false;
- foldUp();
- }
- }
-
- void DropDown::mouseReleased(MouseEvent& mouseEvent)
- {
- if (mIsDragged)
- mPushed = false;
-
- // Released outside of widget. Can happen when we have modal
- // input focus.
- if ((0 > mouseEvent.getY()
- || mouseEvent.getY() >= getHeight()
- || mouseEvent.getX() < 0
- || mouseEvent.getX() >= getWidth())
- && mouseEvent.getButton() == MouseEvent::LEFT
- && isModalMouseInputFocused())
- {
- releaseModalMouseInputFocus();
-
- if (mIsDragged)
- foldUp();
- }
- else if (mouseEvent.getButton() == MouseEvent::LEFT)
- {
- mPushed = false;
- }
-
- mIsDragged = false;
- }
-
- void DropDown::mouseDragged(MouseEvent& mouseEvent)
- {
- mIsDragged = true;
-
- mouseEvent.consume();
- }
-
- void DropDown::setListModel(ListModel *listModel)
- {
- mListBox->setListModel(listModel);
-
- if (mListBox->getSelected() < 0)
- mListBox->setSelected(0);
-
- adjustHeight();
- }
-
- ListModel *DropDown::getListModel()
- {
- return mListBox->getListModel();
- }
-
- void DropDown::adjustHeight()
- {
- if (mScrollArea == NULL)
- throw GCN_EXCEPTION("Scroll area has been deleted.");
-
- if (mListBox == NULL)
- throw GCN_EXCEPTION("List box has been deleted.");
-
- int listBoxHeight = mListBox->getHeight();
-
- // We add 2 for the border
- int h2 = getFont()->getHeight() + 2;
-
- setHeight(h2);
-
- // The addition/subtraction of 2 compensates for the seperation lines
- // seperating the selected element view and the scroll area.
-
- if (mDroppedDown && getParent())
- {
- int h = getParent()->getChildrenArea().height - getY();
-
- if (listBoxHeight > h - h2 - 2)
- {
- mScrollArea->setHeight(h - h2 - 2);
- setHeight(h);
- }
- else
- {
- setHeight(listBoxHeight + h2 + 2);
- mScrollArea->setHeight(listBoxHeight);
- }
- }
-
- mScrollArea->setWidth(getWidth());
- // Resize the ListBox to exactly fit the ScrollArea.
- mListBox->setWidth(mScrollArea->getChildrenArea().width);
- mScrollArea->setPosition(0, 0);
- }
-
- void DropDown::dropDown()
- {
- if (!mDroppedDown)
- {
- mDroppedDown = true;
- mFoldedUpHeight = getHeight();
- adjustHeight();
-
- if (getParent())
- getParent()->moveToTop(this);
- }
-
- mListBox->requestFocus();
- }
-
- void DropDown::foldUp()
- {
- if (mDroppedDown)
- {
- mDroppedDown = false;
- adjustHeight();
- mInternalFocusHandler.focusNone();
- }
- }
-
- void DropDown::focusLost(const Event& event A_UNUSED)
- {
- foldUp();
- mInternalFocusHandler.focusNone();
- }
-
-
- void DropDown::death(const Event& event)
- {
- if (event.getSource() == mScrollArea)
- mScrollArea = NULL;
-
- BasicContainer::death(event);
- }
-
- void DropDown::action(const ActionEvent& actionEvent A_UNUSED)
- {
- foldUp();
- releaseModalMouseInputFocus();
- distributeActionEvent();
- }
-
- Rectangle DropDown::getChildrenArea()
- {
- if (mDroppedDown)
- {
- // Calculate the children area (with the one pixel border in mind)
- return Rectangle(1, mFoldedUpHeight + 1,
- getWidth() - 2, getHeight() - mFoldedUpHeight - 2);
- }
-
- return Rectangle();
- }
-
- void DropDown::setBaseColor(const Color& color)
- {
- if (mInternalScrollArea)
- mScrollArea->setBaseColor(color);
-
- if (mInternalListBox)
- mListBox->setBaseColor(color);
-
- Widget::setBaseColor(color);
- }
-
- void DropDown::setBackgroundColor(const Color& color)
- {
- if (mInternalScrollArea)
- mScrollArea->setBackgroundColor(color);
-
- if (mInternalListBox)
- mListBox->setBackgroundColor(color);
-
- Widget::setBackgroundColor(color);
- }
-
- void DropDown::setForegroundColor(const Color& color)
- {
- if (mInternalScrollArea)
- mScrollArea->setForegroundColor(color);
-
- if (mInternalListBox)
- mListBox->setForegroundColor(color);
-
- Widget::setForegroundColor(color);
- }
-
- void DropDown::setFont(Font *font)
- {
- if (mInternalScrollArea)
- mScrollArea->setFont(font);
-
- if (mInternalListBox)
- mListBox->setFont(font);
-
- Widget::setFont(font);
- }
-
- void DropDown::mouseWheelMovedUp(MouseEvent& mouseEvent)
- {
- if (isFocused() && mouseEvent.getSource() == this)
- {
- mouseEvent.consume();
-
- if (mListBox->getSelected() > 0)
- mListBox->setSelected(mListBox->getSelected() - 1);
- }
- }
-
- void DropDown::mouseWheelMovedDown(MouseEvent& mouseEvent)
- {
- if (isFocused() && mouseEvent.getSource() == this)
- {
- mouseEvent.consume();
-
- mListBox->setSelected(mListBox->getSelected() + 1);
- }
- }
-
- void DropDown::setSelectionColor(const Color& color)
- {
- Widget::setSelectionColor(color);
-
- if (mInternalListBox)
- mListBox->setSelectionColor(color);
- }
-
- void DropDown::valueChanged(const SelectionEvent& event A_UNUSED)
- {
- distributeValueChangedEvent();
- }
-
- void DropDown::addSelectionListener(SelectionListener* selectionListener)
- {
- mSelectionListeners.push_back(selectionListener);
- }
-
- void DropDown::removeSelectionListener(SelectionListener* listener)
- {
- mSelectionListeners.remove(listener);
- }
-
- void DropDown::distributeValueChangedEvent()
- {
- SelectionListenerIterator iter;
-
- for (iter = mSelectionListeners.begin();
- iter != mSelectionListeners.end();
- ++iter)
- {
- SelectionEvent event(this);
- (*iter)->valueChanged(event);
- }
- }
-}
-