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authorAndrei Karas <akaras@inbox.ru>2011-05-30 20:09:31 +0300
committerAndrei Karas <akaras@inbox.ru>2011-05-30 20:09:31 +0300
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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.
+ */
+
+#ifndef GCN_GUI_HPP
+#define GCN_GUI_HPP
+
+#include <list>
+#include <deque>
+
+#include "guichan/keyevent.hpp"
+#include "guichan/mouseevent.hpp"
+#include "guichan/mouseinput.hpp"
+#include "guichan/platform.hpp"
+
+namespace gcn
+{
+ class FocusHandler;
+ class Graphics;
+ class Input;
+ class KeyListener;
+ class Widget;
+
+ // The following comment will appear in the doxygen main page.
+ /**
+ * @mainpage
+ * @section Introduction
+ * This documentation is mostly intended as a reference to the API. If you want to get started with Guichan, we suggest you check out the programs in the examples directory of the Guichan release.
+ * @n
+ * @n
+ * This documentation is, and will always be, work in progress. If you find any errors, typos or inconsistencies, or if you feel something needs to be explained in more detail - don't hesitate to tell us.
+ */
+
+ /**
+ * Contains a Guichan GUI. This is the core class of Guichan to which
+ * implementations of back ends are passed, to make Guichan work with
+ * a specific library, and to where the top widget (root widget of GUI)
+ * is added. If you want to be able to have more then one widget in your
+ * GUI, the top widget should be a container.
+ *
+ * A Gui object cannot work properly without passing back end
+ * implementations to it. A Gui object must have an implementation of a
+ * Graphics and an implementation of Input.
+ *
+ * NOTE: A complete GUI also must have the ability to load images.
+ * Images are loaded with the Image class, so to make Guichan
+ * able to load images an implementation of ImageLoader must be
+ * passed to Image.
+ *
+ * @see Graphics, Input, Image
+ */
+ class GCN_CORE_DECLSPEC Gui
+ {
+ public:
+
+ /**
+ * Constructor.
+ */
+ Gui();
+
+ /**
+ * Destructor.
+ */
+ virtual ~Gui();
+
+ /**
+ * Sets the top widget. The top widget is the root widget
+ * of the GUI. If you want a GUI to be able to contain more
+ * than one widget the top widget should be a container.
+ *
+ * @param top The top widget.
+ * @see Container
+ * @since 0.1.0
+ */
+ virtual void setTop(Widget* top);
+
+ /**
+ * Gets the top widget. The top widget is the root widget
+ * of the GUI.
+ *
+ * @return The top widget. NULL if no top widget has been set.
+ * @since 0.1.0
+ */
+ virtual Widget* getTop() const;
+
+ /**
+ * Sets the graphics object to use for drawing.
+ *
+ * @param graphics The graphics object to use for drawing.
+ * @see getGraphics, AllegroGraphics, HGEGraphics,
+ * OpenLayerGraphics, OpenGLGraphics, SDLGraphics
+ * @since 0.1.0
+ */
+ virtual void setGraphics(Graphics* graphics);
+
+ /**
+ * Gets the graphics object used for drawing.
+ *
+ * @return The graphics object used for drawing. NULL if no
+ * graphics object has been set.
+ * @see setGraphics, AllegroGraphics, HGEGraphics,
+ * OpenLayerGraphics, OpenGLGraphics, SDLGraphics
+ * @since 0.1.0
+ */
+ virtual Graphics* getGraphics() const;
+
+ /**
+ * Sets the input object to use for input handling.
+ *
+ * @param input The input object to use for input handling.
+ * @see getInput, AllegroInput, HGEInput, OpenLayerInput,
+ * SDLInput
+ * @since 0.1.0
+ */
+ virtual void setInput(Input* input);
+
+ /**
+ * Gets the input object being used for input handling.
+ *
+ * @return The input object used for handling input. NULL if no
+ * input object has been set.
+ * @see setInput, AllegroInput, HGEInput, OpenLayerInput,
+ * SDLInput
+ * @since 0.1.0
+ */
+ virtual Input* getInput() const;
+
+ /**
+ * Performs logic of the GUI. By calling this function all logic
+ * functions down in the GUI heirarchy will be called. When logic
+ * is called for Gui, user input will be handled.
+ *
+ * @see Widget::logic
+ * @since 0.1.0
+ */
+ virtual void logic();
+
+ /**
+ * Draws the GUI. By calling this funcion all draw functions
+ * down in the GUI hierarchy will be called. When draw is called
+ * the used Graphics object will be initialised and drawing of
+ * the top widget will commence.
+ *
+ * @see Widget::draw
+ * @since 0.1.0
+ */
+ virtual void draw();
+
+ /**
+ * Focuses none of the widgets in the Gui.
+ *
+ * @since 0.1.0
+ */
+ virtual void focusNone();
+
+ /**
+ * Sets tabbing enabled, or not. Tabbing is the usage of
+ * changing focus by utilising the tab key.
+ *
+ * @param tabbing True if tabbing should be enabled, false
+ * otherwise.
+ * @see isTabbingEnabled
+ * @since 0.1.0
+ */
+ virtual void setTabbingEnabled(bool tabbing);
+
+ /**
+ * Checks if tabbing is enabled.
+ *
+ * @return True if tabbing is enabled, false otherwise.
+ * @see setTabbingEnabled
+ * @since 0.1.0
+ */
+ virtual bool isTabbingEnabled();
+
+ /**
+ * Adds a global key listener to the Gui. A global key listener
+ * will receive all key events generated from the GUI and global
+ * key listeners will receive the events before key listeners
+ * of widgets.
+ *
+ * @param keyListener The key listener to add.
+ * @see removeGlobalKeyListener
+ * @since 0.5.0
+ */
+ virtual void addGlobalKeyListener(KeyListener* keyListener);
+
+ /**
+ * Removes global key listener from the Gui.
+ *
+ * @param keyListener The key listener to remove.
+ * @throws Exception if the key listener hasn't been added.
+ * @see addGlobalKeyListener
+ * @since 0.5.0
+ */
+ virtual void removeGlobalKeyListener(KeyListener* keyListener);
+
+ protected:
+ /**
+ * Handles all mouse input.
+ *
+ * @since 0.6.0
+ */
+ virtual void handleMouseInput();
+
+ /**
+ * Handles key input.
+ *
+ * @since 0.6.0
+ */
+ virtual void handleKeyInput();
+
+ /**
+ * Handles mouse moved input.
+ *
+ * @param mouseInput The mouse input to handle.
+ * @since 0.6.0
+ */
+ virtual void handleMouseMoved(const MouseInput& mouseInput);
+
+ /**
+ * Handles mouse pressed input.
+ *
+ * @param mouseInput The mouse input to handle.
+ * @since 0.6.0
+ */
+ virtual void handleMousePressed(const MouseInput& mouseInput);
+
+ /**
+ *
+ * Handles mouse wheel moved down input.
+ *
+ * @param mouseInput The mouse input to handle.
+ * @since 0.6.0
+ */
+ virtual void handleMouseWheelMovedDown(const MouseInput& mouseInput);
+
+ /**
+ * Handles mouse wheel moved up input.
+ *
+ * @param mouseInput The mouse input to handle.
+ * @since 0.6.0
+ */
+ virtual void handleMouseWheelMovedUp(const MouseInput& mouseInput);
+
+ /**
+ * Handles mouse released input.
+ *
+ * @param mouseInput The mouse input to handle.
+ * @since 0.6.0
+ */
+ virtual void handleMouseReleased(const MouseInput& mouseInput);
+
+ /**
+ * Handles modal focus. Modal focus needs to be checked at
+ * each logic iteration as it might be necessary to distribute
+ * mouse entered or mouse exited events.
+ *
+ * @since 0.8.0
+ */
+ virtual void handleModalFocus();
+
+ /**
+ * Handles modal mouse input focus. Modal mouse input focus needs
+ * to be checked at each logic iteration as it might be necessary to
+ * distribute mouse entered or mouse exited events.
+ *
+ * @since 0.8.0
+ */
+ virtual void handleModalMouseInputFocus();
+
+ /**
+ * Handles modal focus gained. If modal focus has been gained it might
+ * be necessary to distribute mouse entered or mouse exited events.
+ *
+ * @since 0.8.0
+ */
+ virtual void handleModalFocusGained();
+
+ /**
+ * Handles modal mouse input focus gained. If modal focus has been
+ * gained it might be necessary to distribute mouse entered or mouse
+ * exited events.
+ *
+ * @since 0.8.0
+ */
+ virtual void handleModalFocusReleased();
+
+ /**
+ * Distributes a mouse event.
+ *
+ * @param type The type of the event to distribute,
+ * @param button The button of the event (if any used) to distribute.
+ * @param x The x coordinate of the event.
+ * @param y The y coordinate of the event.
+ * @param fource indicates whether the distribution should be forced or not.
+ * A forced distribution distributes the event even if a widget
+ * is not enabled, not visible, another widget has modal
+ * focus or another widget has modal mouse input focus.
+ * Default value is false.
+ * @param toSourceOnly indicates whether the distribution should be to the
+ * source widget only or to it's parent's mouse listeners
+ * as well.
+ *
+ * @since 0.6.0
+ */
+ virtual void distributeMouseEvent(Widget* source,
+ int type,
+ int button,
+ int x,
+ int y,
+ bool force = false,
+ bool toSourceOnly = false);
+
+ /**
+ * Distributes a key event.
+ *
+ * @param keyEvent The key event to distribute.
+
+ * @since 0.6.0
+ */
+ virtual void distributeKeyEvent(KeyEvent& keyEvent);
+
+ /**
+ * Distributes a key event to the global key listeners.
+ *
+ * @param keyEvent The key event to distribute.
+ *
+ * @since 0.6.0
+ */
+ virtual void distributeKeyEventToGlobalKeyListeners(KeyEvent& keyEvent);
+
+ /**
+ * Gets the widget at a certain position.
+ *
+ * @return The widget at a certain position.
+ * @since 0.6.0
+ */
+ virtual Widget* getWidgetAt(int x, int y);
+
+ /**
+ * Gets the source of the mouse event.
+ *
+ * @return The source widget of the mouse event.
+ * @since 0.6.0
+ */
+ virtual Widget* getMouseEventSource(int x, int y);
+
+ /**
+ * Gets the source of the key event.
+ *
+ * @return The source widget of the key event.
+ * @since 0.6.0
+ */
+ virtual Widget* getKeyEventSource();
+
+ /**
+ * Holds the top widget.
+ */
+ Widget* mTop;
+
+ /**
+ * Holds the graphics implementation used.
+ */
+ Graphics* mGraphics;
+
+ /**
+ * Holds the input implementation used.
+ */
+ Input* mInput;
+
+ /**
+ * Holds the focus handler for the Gui.
+ */
+ FocusHandler* mFocusHandler;
+
+ /**
+ * True if tabbing is enabled, false otherwise.
+ */
+ bool mTabbing;
+
+ /**
+ * Typedef.
+ */
+ typedef std::list<KeyListener*> KeyListenerList;
+
+ /**
+ * Typedef.
+ */
+ typedef KeyListenerList::iterator KeyListenerListIterator;
+
+ /**
+ * Holds the global key listeners of the Gui.
+ */
+ KeyListenerList mKeyListeners;
+
+ /**
+ * True if shift is pressed, false otherwise.
+ */
+ bool mShiftPressed;
+
+ /**
+ * True if meta is pressed, false otherwise.
+ */
+ bool mMetaPressed;
+
+ /**
+ * True if control is pressed, false otherwise.
+ */
+ bool mControlPressed;
+
+ /**
+ * True if alt is pressed, false otherwise.
+ */
+ bool mAltPressed;
+
+ /**
+ * Holds the last mouse button pressed.
+ */
+ unsigned int mLastMousePressButton;
+
+ /**
+ * Holds the last mouse press time stamp.
+ */
+ int mLastMousePressTimeStamp;
+
+ /**
+ * Holds the last mouse x coordinate.
+ */
+ int mLastMouseX;
+
+ /**
+ * Holds the last mouse y coordinate.
+ */
+ int mLastMouseY;
+
+ /**
+ * Holds the current click count. Used to keep track
+ * of clicks for a the last pressed button.
+ */
+ int mClickCount;
+
+ /**
+ * Holds the last button used when a drag of a widget
+ * was initiated. Used to be able to release a drag
+ * when the same button is released.
+ */
+ int mLastMouseDragButton;
+
+ /**
+ * Holds a stack with all the widgets with the mouse.
+ * Used to properly distribute mouse events.
+ */
+ std::deque<Widget*> mWidgetWithMouseQueue;
+ };
+}
+
+#endif // end GCN_GUI_HPP
+
+/* yakslem - "Women, it's a constant struggle."
+ * finalman - "Yes, but sometimes they succeed with their guesses."
+ * yaklsem - "...eh...I was talking about love."
+ * finalman - "Oh...ok..."
+ * An awkward silence followed.
+ */