/usr/include/guichan/widgets/scrollarea.hpp is in libguichan-dev 0.8.2-15.
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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
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*/
#ifndef GCN_SCROLLAREA_HPP
#define GCN_SCROLLAREA_HPP
#include <string>
#include "guichan/basiccontainer.hpp"
#include "guichan/mouselistener.hpp"
#include "guichan/platform.hpp"
namespace gcn
{
/**
* Implementation if a scrollable area used to view widgets larger than the scroll area.
* A scroll area can be customized to always show scroll bars or to show them only when
* necessary.
*/
class GCN_CORE_DECLSPEC ScrollArea:
public BasicContainer,
public MouseListener
{
public:
/**
* Scrollpolicies for the horizontal and vertical scrollbar.
* The policies are:
*
* SHOW_ALWAYS - Always show the scrollbars no matter what.
* SHOW_NEVER - Never show the scrollbars no matter waht.
* SHOW_AUTO - Show the scrollbars only when needed. That is if the
* content grows larger then the ScrollArea.
*/
enum ScrollPolicy
{
SHOW_ALWAYS = 0,
SHOW_NEVER,
SHOW_AUTO
};
/**
* Constructor.
*/
ScrollArea();
/**
* Constructor.
*
* @param content The content of the scroll area.
*/
ScrollArea(Widget *content);
/**
* Constructor.
*
* @param content The content of the scroll area.
* @param hPolicy The policy for the horizontal scrollbar. See enum with
* policies.
* @param vPolicy The policy for the vertical scrollbar. See enum with
* policies.
*/
ScrollArea(Widget *content,
ScrollPolicy hPolicy,
ScrollPolicy vPolicy);
/**
* Destructor.
*/
virtual ~ScrollArea();
/**
* Sets the content.
*
* @param widget The content of the scroll area.
*/
void setContent(Widget* widget);
/**
* Gets the content.
*
* @return The content of the scroll area.
*/
Widget* getContent();
/**
* Sets the horizontal scrollbar policy. See enum with policies.
*
* @param hPolicy The policy for the horizontal scrollbar.
* @see getHorizontalScrollPolicy
*/
void setHorizontalScrollPolicy(ScrollPolicy hPolicy);
/**
* Gets the horizontal scrollbar policy. See enum with policies.
*
* @return The policy for the horizontal scrollbar policy.
* @see setHorizontalScrollPolicy, setScrollPolicy
*/
ScrollPolicy getHorizontalScrollPolicy() const;
/**
* Sets the vertical scrollbar policy. See enum with policies.
*
* @param vPolicy The policy for the vertical scrollbar.
* @see getVerticalScrollPolicy
*/
void setVerticalScrollPolicy(ScrollPolicy vPolicy);
/**
* Gets the vertical scrollbar policy. See enum with policies.
*
* @return The policy for the vertical scrollbar.
* @see setVerticalScrollPolicy, setScrollPolicy
*/
ScrollPolicy getVerticalScrollPolicy() const;
/**
* Sets the horizontal and vertical scrollbar policy.
*
* @param hPolicy The policy for the horizontal scrollbar.
* @param vPolicy The policy for the vertical scrollbar.
* @see getVerticalScrollPolicy, getHorizontalScrollPolicy
*/
void setScrollPolicy(ScrollPolicy hPolicy, ScrollPolicy vPolicy);
/**
* Sets the amount to scroll vertically.
*
* @param vScroll The amount to scroll.
* @see getVerticalScrollAmount
*/
void setVerticalScrollAmount(int vScroll);
/**
* Gets the amount that is scrolled vertically.
*
* @return The scroll amount on vertical scroll.
* @see setVerticalScrollAmount, setScrollAmount
*/
int getVerticalScrollAmount() const;
/**
* Sets the amount to scroll horizontally.
*
* @param hScroll The amount to scroll.
* @see getHorizontalScrollAmount
*/
void setHorizontalScrollAmount(int hScroll);
/**
* Gets the amount that is scrolled horizontally.
*
* @return The scroll amount on horizontal scroll.
* @see setHorizontalScrollAmount, setScrollAmount
*/
int getHorizontalScrollAmount() const;
/**
* Sets the amount to scroll horizontally and vertically.
*
* @param hScroll The amount to scroll on horizontal scroll.
* @param vScroll The amount to scroll on vertical scroll.
* @see getHorizontalScrollAmount, getVerticalScrollAmount
*/
void setScrollAmount(int hScroll, int vScroll);
/**
* Gets the maximum amount of horizontal scroll.
*
* @return The horizontal max scroll.
*/
int getHorizontalMaxScroll();
/**
* Gets the maximum amount of vertical scroll.
*
* @return The vertical max scroll.
*/
int getVerticalMaxScroll();
/**
* Sets the width of the scroll bars.
*
* @param width The width of the scroll bars.
* @see getScrollbarWidth
*/
void setScrollbarWidth(int width);
/**
* Gets the width of the scroll bars.
*
* @return the width of the ScrollBar.
* @see setScrollbarWidth
*/
int getScrollbarWidth() const;
/**
* Sets the amount to scroll in pixels when the left scroll button is
* pushed.
*
* @param amount The amount to scroll in pixels.
* @see getLeftButtonScrollAmount
*/
void setLeftButtonScrollAmount(int amount);
/**
* Sets the amount to scroll in pixels when the right scroll button is
* pushed.
*
* @param amount The amount to scroll in pixels.
* @see getRightButtonScrollAmount
*/
void setRightButtonScrollAmount(int amount);
/**
* Sets the amount to scroll in pixels when the up scroll button is
* pushed.
*
* @param amount The amount to scroll in pixels.
* @see getUpButtonScrollAmount
*/
void setUpButtonScrollAmount(int amount);
/**
* Sets the amount to scroll in pixels when the down scroll button is
* pushed.
*
* @param amount The amount to scroll in pixels.
* @see getDownButtonScrollAmount
*/
void setDownButtonScrollAmount(int amount);
/**
* Gets the amount to scroll in pixels when the left scroll button is
* pushed.
*
* @return The amount to scroll in pixels.
* @see setLeftButtonScrollAmount
*/
int getLeftButtonScrollAmount() const;
/**
* Gets the amount to scroll in pixels when the right scroll button is
* pushed.
*
* @return The amount to scroll in pixels.
* @see setRightButtonScrollAmount
*/
int getRightButtonScrollAmount() const;
/**
* Gets the amount to scroll in pixels when the up scroll button is
* pushed.
*
* @return The amount to scroll in pixels.
* @see setUpButtonScrollAmount
*/
int getUpButtonScrollAmount() const;
/**
* Gets the amount to scroll in pixels when the down scroll button is
* pushed.
*
* @return The amount to scroll in pixels.
* @see setDownButtonScrollAmount
*/
int getDownButtonScrollAmount() const;
/**
* Sets the scroll area to be opaque, that is sets the scoll area
* to display its background.
*
* @param opaque True if the scoll area should be opaque, false otherwise.
*/
void setOpaque(bool opaque);
/**
* Checks if the scroll area is opaque, that is if the scroll area
* displays its background.
*
* @return True if the scroll area is opaque, false otherwise.
*/
bool isOpaque() const;
// Inherited from BasicContainer
virtual void showWidgetPart(Widget* widget, Rectangle area);
virtual Rectangle getChildrenArea();
virtual Widget *getWidgetAt(int x, int y);
// Inherited from Widget
virtual void draw(Graphics *graphics);
virtual void logic();
void setWidth(int width);
void setHeight(int height);
void setDimension(const Rectangle& dimension);
// Inherited from MouseListener
virtual void mousePressed(MouseEvent& mouseEvent);
virtual void mouseReleased(MouseEvent& mouseEvent);
virtual void mouseDragged(MouseEvent& mouseEvent);
virtual void mouseWheelMovedUp(MouseEvent& mouseEvent);
virtual void mouseWheelMovedDown(MouseEvent& mouseEvent);
protected:
/**
* Draws the background of the scroll area, that is
* the area behind the content.
*
* @param graphics a Graphics object to draw with.
*/
virtual void drawBackground(Graphics *graphics);
/**
* Draws the up button.
*
* @param graphics a Graphics object to draw with.
*/
virtual void drawUpButton(Graphics *graphics);
/**
* Draws the down button.
*
* @param graphics a Graphics object to draw with.
*/
virtual void drawDownButton(Graphics *graphics);
/**
* Draws the left button.
*
* @param graphics a Graphics object to draw with.
*/
virtual void drawLeftButton(Graphics *graphics);
/**
* Draws the right button.
*
* @param graphics a Graphics object to draw with.
*/
virtual void drawRightButton(Graphics *graphics);
/**
* Draws the vertical scroll bar.
*
* @param graphics a Graphics object to draw with.
*/
virtual void drawVBar(Graphics* graphics);
/**
* Draws the horizontal scroll bar.
*
* @param graphics a Graphics object to draw with.
*/
virtual void drawHBar(Graphics* graphics);
/**
* Draws the vertical marker.
*
* @param graphics a Graphics object to draw with.
*/
virtual void drawVMarker(Graphics* graphics);
/**
* Draws the horizontal marker.
*
* @param graphics a Graphics object to draw with.
*/
virtual void drawHMarker(Graphics* graphics);
/**
* Checks the policies for the scroll bars.
*/
virtual void checkPolicies();
/**
* Gets the up button dimension.
*
* @return the dimension of the up button.
*/
Rectangle getUpButtonDimension();
/**
* Gets the down button dimension.
*
* @return the dimension of the down button.
*/
Rectangle getDownButtonDimension();
/**
* Gets the left button dimension.
*
* @return the dimension of the left button.
*/
Rectangle getLeftButtonDimension();
/**
* Gets the right button dimension.
*
* @return the dimension of the right button.
*/
Rectangle getRightButtonDimension();
/**
* Gets the vertical scrollbar dimension.
*
* @return the dimension of the vertical scrollbar.
*/
Rectangle getVerticalBarDimension();
/**
* Gets the horizontal scrollbar dimension.
*
* @return the dimension of the horizontal scrollbar.
*/
Rectangle getHorizontalBarDimension();
/**
* Gets the vertical marker dimension.
*
* @return the dimension of the vertical marker.
*/
Rectangle getVerticalMarkerDimension();
/**
* Gets the horizontal marker dimension.
*
* @return the dimension of the horizontal marker.
*/
Rectangle getHorizontalMarkerDimension();
/**
* Holds the vertical scroll amount.
*/
int mVScroll;
/**
* Holds the horizontal scroll amount.
*/
int mHScroll;
/**
* Holds the width of the scroll bars.
*/
int mScrollbarWidth;
/**
* Holds the horizontal scroll bar policy.
*/
ScrollPolicy mHPolicy;
/**
* Holds the vertical scroll bar policy.
*/
ScrollPolicy mVPolicy;
/**
* True if the vertical scroll bar is visible, false otherwise.
*/
bool mVBarVisible;
/**
* True if the horizontal scroll bar is visible, false otherwise.
*/
bool mHBarVisible;
/**
* True if the up button is pressed, false otherwise.
*/
bool mUpButtonPressed;
/**
* True if the down button is pressed, false otherwise.
*/
bool mDownButtonPressed;
/**
* True if the left button is pressed, false otherwise.
*/
bool mLeftButtonPressed;
/**
* True if the right button is pressed, false otherwise.
*/
bool mRightButtonPressed;
/**
* Holds the up button scroll amount.
*/
int mUpButtonScrollAmount;
/**
* Holds the down button scroll amount.
*/
int mDownButtonScrollAmount;
/**
* Holds the left button scroll amount.
*/
int mLeftButtonScrollAmount;
/**
* Holds the right button scroll amount.
*/
int mRightButtonScrollAmount;
/**
* True if the vertical marked is dragged.
*/
bool mIsVerticalMarkerDragged;
/**
* True if the horizontal marked is dragged.
*/
bool mIsHorizontalMarkerDragged;
/**
* Holds the horizontal markers drag offset.
*/
int mHorizontalMarkerDragOffset;
/**
* Holds the vertical markers drag offset.
*/
int mVerticalMarkerDragOffset;
/**
* True if the scroll area should be opaque (that is
* display its background), false otherwise.
*/
bool mOpaque;
};
}
#endif // end GCN_SCROLLAREA_HPP
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