elexis
f192d4a2fa
Allows developers and modders to register and unregister hotkeys without having to specify, change or overwrite XML files. Also allows implementing the main menu GUI page with only GUI objects for one submenu, refs #5387 / D2240. Differential Revision: https://code.wildfiregames.com/D2260 Idea by nani in D2257. This was SVN commit r22851.
672 lines
19 KiB
C++
672 lines
19 KiB
C++
/* Copyright (C) 2019 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* This is the top class of the whole GUI, all objects
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* and settings are stored within this class.
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*/
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#ifndef INCLUDED_CGUI
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#define INCLUDED_CGUI
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#include "GUITooltip.h"
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#include "GUIbase.h"
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#include "lib/input.h"
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#include "ps/Shapes.h"
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#include "ps/XML/Xeromyces.h"
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#include "scriptinterface/ScriptInterface.h"
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#include <boost/unordered_set.hpp>
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ERROR_TYPE(GUI, JSOpenFailed);
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extern const double SELECT_DBLCLICK_RATE;
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/**
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* Contains a list of values for new defaults to objects.
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*/
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struct SGUIStyle
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{
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// Take advantage of moving the entire map instead and avoiding unintended copies.
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NONCOPYABLE(SGUIStyle);
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MOVABLE(SGUIStyle);
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SGUIStyle() = default;
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std::map<CStr, CStrW> m_SettingsDefaults;
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};
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class JSObject; // The GUI stores a JSObject*, so needs to know that JSObject exists
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class IGUIObject;
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class CGUISpriteInstance;
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struct CGUIColor;
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class CGUIText;
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struct SGUIIcon;
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class CGUIString;
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class CGUISprite;
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struct SGUIImageEffects;
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struct SGUIScrollBarStyle;
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class GUITooltip;
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/**
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* The main object that represents a whole GUI page.
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*
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* No interfacial functions throws.
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*/
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class CGUI
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{
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NONCOPYABLE(CGUI);
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private:
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// Private typedefs
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using ConstructObjectFunction = IGUIObject* (*)(CGUI&);
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public:
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CGUI(const shared_ptr<ScriptRuntime>& runtime);
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~CGUI();
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/**
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* Initializes the GUI, needs to be called before the GUI is used
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*/
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void Initialize();
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/**
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* Performs processing that should happen every frame
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* (including sending the "Tick" event to scripts)
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*/
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void TickObjects();
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/**
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* Sends a specified script event to every object
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*
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* @param EventName String representation of event name
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*/
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void SendEventToAll(const CStr& EventName);
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/**
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* Sends a specified script event to every object
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*
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* @param EventName String representation of event name
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* @param paramData JS::HandleValueArray storing the arguments passed to the event handler.
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*/
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void SendEventToAll(const CStr& EventName, const JS::HandleValueArray& paramData);
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/**
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* Displays the whole GUI
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*/
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void Draw();
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/**
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* Draw GUI Sprite
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*
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* @param Sprite Object referring to the sprite (which also caches
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* calculations for faster rendering)
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* @param CellID Number of the icon cell to use. (Ignored if this sprite doesn't
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* have any images with "cell-size")
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* @param Z Drawing order, depth value
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* @param Rect Position and Size
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* @param Clipping The sprite shouldn't be drawn outside this rectangle
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*/
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void DrawSprite(const CGUISpriteInstance& Sprite, int CellID, const float& Z, const CRect& Rect, const CRect& Clipping = CRect());
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/**
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* Clean up, call this to clean up all memory allocated
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* within the GUI.
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*/
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void Destroy();
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/**
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* The replacement of Process(), handles an SDL_Event_
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*
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* @param ev SDL Event, like mouse/keyboard input
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*/
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InReaction HandleEvent(const SDL_Event_* ev);
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/**
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* Load a GUI XML file into the GUI.
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*
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* <b>VERY IMPORTANT!</b> All \<styles\>-files must be read before
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* everything else!
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*
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* @param Filename Name of file
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* @param Paths Set of paths; all XML and JS files loaded will be added to this
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*/
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void LoadXmlFile(const VfsPath& Filename, boost::unordered_set<VfsPath>& Paths);
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/**
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* Allows the JS side to modify the hotkey setting assigned to a GUI object.
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*/
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void SetObjectHotkey(IGUIObject* pObject, const CStr& hotkeyTag);
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void UnsetObjectHotkey(IGUIObject* pObject, const CStr& hotkeyTag);
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/**
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* Allows the JS side to add or remove global hotkeys.
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*/
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void SetGlobalHotkey(const CStr& hotkeyTag, JS::HandleValue function);
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void UnsetGlobalHotkey(const CStr& hotkeyTag);
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/**
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* Return the object which is an ancestor of every other GUI object.
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*/
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IGUIObject* GetBaseObject() const { return m_BaseObject; };
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/**
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* Checks if object exists and return true or false accordingly
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*
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* @param Name String name of object
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* @return true if object exists
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*/
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bool ObjectExists(const CStr& Name) const;
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/**
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* Returns the GUI object with the desired name, or NULL
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* if no match is found,
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*
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* @param Name String name of object
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* @return Matching object, or NULL
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*/
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IGUIObject* FindObjectByName(const CStr& Name) const;
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/**
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* Returns the GUI object under the mouse, or NULL if none.
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*/
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IGUIObject* FindObjectUnderMouse() const;
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/**
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* Returns the current screen coordinates of the cursor.
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*/
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const CPos& GetMousePos() const { return m_MousePos; };
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/**
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* Returns the currently pressed mouse buttons.
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*/
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const unsigned int& GetMouseButtons() { return m_MouseButtons; };
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const SGUIScrollBarStyle* GetScrollBarStyle(const CStr& style) const;
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/**
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* The GUI needs to have all object types inputted and
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* their constructors. Also it needs to associate a type
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* by a string name of the type.
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*
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* To add a type:
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* @code
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* AddObjectType("button", &CButton::ConstructObject);
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* @endcode
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*
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* @param str Reference name of object type
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* @param pFunc Pointer of function ConstuctObject() in the object
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*
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* @see CGUI#ConstructObject()
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*/
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void AddObjectType(const CStr& str, ConstructObjectFunction pFunc) { m_ObjectTypes[str] = pFunc; }
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/**
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* Update Resolution, should be called every time the resolution
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* of the OpenGL screen has been changed, this is because it needs
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* to re-cache all its actual sizes
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*
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* Needs no input since screen resolution is global.
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*
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* @see IGUIObject#UpdateCachedSize()
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*/
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void UpdateResolution();
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/**
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* Check if an icon exists
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*/
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bool HasIcon(const CStr& name) const { return (m_Icons.count(name) != 0); }
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/**
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* Get Icon (a const reference, can never be changed)
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*/
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const SGUIIcon& GetIcon(const CStr& name) const { return m_Icons.at(name); }
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/**
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* Check if a style exists
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*/
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bool HasStyle(const CStr& name) const { return (m_Styles.count(name) != 0); }
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/**
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* Get Style if it exists, otherwise throws an exception.
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*/
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const SGUIStyle& GetStyle(const CStr& name) const { return m_Styles.at(name); }
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/**
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* Check if a predefined color of that name exists.
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*/
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bool HasPreDefinedColor(const CStr& name) const { return (m_PreDefinedColors.count(name) != 0); }
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/**
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* Resolve the predefined color if it exists, otherwise throws an exception.
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*/
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const CGUIColor& GetPreDefinedColor(const CStr& name) const { return m_PreDefinedColors.at(name); }
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shared_ptr<ScriptInterface> GetScriptInterface() { return m_ScriptInterface; };
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JS::Value GetGlobalObject() { return m_ScriptInterface->GetGlobalObject(); };
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/**
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* Updates the object pointers, needs to be called each
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* time an object has been added or removed.
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*
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* This function is atomic, meaning if it throws anything, it will
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* have seen it through that nothing was ultimately changed.
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*
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* @throws PSERROR_GUI that is thrown from IGUIObject::AddToPointersMap().
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*/
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void UpdateObjects();
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private:
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/**
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* Adds an object to the GUI's object database
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* Private, since you can only add objects through
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* XML files. Why? Because it enables the GUI to
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* be much more encapsulated and safe.
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*
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* @throws Rethrows PSERROR_GUI from IGUIObject::AddChild().
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*/
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void AddObject(IGUIObject* pObject);
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/**
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* You input the name of the object type, and let's
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* say you input "button", then it will construct a
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* CGUIObjet* as a CButton.
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*
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* @param str Name of object type
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* @return Newly constructed IGUIObject (but constructed as a subclass)
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*/
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IGUIObject* ConstructObject(const CStr& str);
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public:
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/**
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* Get Focused Object.
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*/
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IGUIObject* GetFocusedObject() { return m_FocusedObject; }
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/**
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* Change focus to new object.
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* Will send LOST_FOCUS/GOT_FOCUS messages as appropriate.
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* pObject can be NULL to remove all focus.
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*/
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void SetFocusedObject(IGUIObject* pObject);
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/**
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* Reads a string value and modifies the given value of type T if successful.
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* Does not change the value upon conversion failure.
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*
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* @param pGUI The GUI page which may contain data relevant to the parsing
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* (for example predefined colors).
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* @param Value The value in string form, like "0 0 100% 100%"
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* @param tOutput Parsed value of type T
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* @return True at success.
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*/
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template <typename T>
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static bool ParseString(const CGUI* pGUI, const CStrW& Value, T& tOutput);
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private:
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//--------------------------------------------------------
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/** @name XML Reading Xeromyces specific subroutines
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*
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* These does not throw!
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* Because when reading in XML files, it won't be fatal
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* if an error occurs, perhaps one particular object
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* fails, but it'll still continue reading in the next.
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* All Error are reported with ReportParseError
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*/
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//--------------------------------------------------------
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/*
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Xeromyces_* functions tree
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<objects> (ReadRootObjects)
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+-<script> (ReadScript)
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+-<object> (ReadObject)
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+-<action>
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+-Optional Type Extensions (IGUIObject::ReadExtendedElement) TODO
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+-<<object>> *recursive*
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<styles> (ReadRootStyles)
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+-<style> (ReadStyle)
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<sprites> (ReadRootSprites)
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+-<sprite> (ReadSprite)
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+-<image> (ReadImage)
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<setup> (ReadRootSetup)
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+-<tooltip> (ReadToolTip)
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+-<scrollbar> (ReadScrollBar)
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+-<icon> (ReadIcon)
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+-<color> (ReadColor)
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*/
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//@{
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// Read Roots
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/**
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* Reads in the root element \<objects\> (the DOMElement).
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*
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* @param Element The Xeromyces object that represents
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* the objects-tag.
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* @param pFile The Xeromyces object for the file being read
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* @param Paths Collects the set of all XML/JS files that are loaded
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*
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* @see LoadXmlFile()
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*/
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void Xeromyces_ReadRootObjects(XMBElement Element, CXeromyces* pFile, boost::unordered_set<VfsPath>& Paths);
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/**
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* Reads in the root element \<sprites\> (the DOMElement).
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*
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* @param Element The Xeromyces object that represents
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* the sprites-tag.
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* @param pFile The Xeromyces object for the file being read
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*
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* @see LoadXmlFile()
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*/
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void Xeromyces_ReadRootSprites(XMBElement Element, CXeromyces* pFile);
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/**
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* Reads in the root element \<styles\> (the DOMElement).
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*
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* @param Element The Xeromyces object that represents
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* the styles-tag.
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* @param pFile The Xeromyces object for the file being read
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*
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* @see LoadXmlFile()
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*/
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void Xeromyces_ReadRootStyles(XMBElement Element, CXeromyces* pFile);
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/**
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* Reads in the root element \<setup\> (the DOMElement).
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*
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* @param Element The Xeromyces object that represents
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* the setup-tag.
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* @param pFile The Xeromyces object for the file being read
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*
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* @see LoadXmlFile()
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*/
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void Xeromyces_ReadRootSetup(XMBElement Element, CXeromyces* pFile);
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// Read Subs
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/**
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* Notice! Recursive function!
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*
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* Read in an \<object\> (the XMBElement) and stores it
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* as a child in the pParent.
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*
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* It will also check the object's children and call this function
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* on them too. Also it will call all other functions that reads
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* in other stuff that can be found within an object. Check the
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* tree in the beginning of this class' Xeromyces_* section.
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*
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* @param Element The Xeromyces object that represents
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* the object-tag.
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* @param pFile The Xeromyces object for the file being read
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* @param pParent Parent to add this object as child in.
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* @param NameSubst A set of substitution strings that will be
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* applied to all object names within this object.
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* @param Paths Output set of file paths that this GUI object
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* relies on.
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*
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* @see LoadXmlFile()
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*/
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void Xeromyces_ReadObject(XMBElement Element, CXeromyces* pFile, IGUIObject* pParent, std::vector<std::pair<CStr, CStr> >& NameSubst, boost::unordered_set<VfsPath>& Paths, u32 nesting_depth);
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/**
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* Reads in the element \<repeat\>, which repeats its child \<object\>s
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* 'count' times, replacing the string "[n]" (or the value of the attribute
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* 'var' enclosed in square brackets) in its descendants' names with "[0]",
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* "[1]", etc.
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*/
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void Xeromyces_ReadRepeat(XMBElement Element, CXeromyces* pFile, IGUIObject* pParent, std::vector<std::pair<CStr, CStr> >& NameSubst, boost::unordered_set<VfsPath>& Paths, u32 nesting_depth);
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/**
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* Reads in the element \<script\> (the XMBElement) and executes
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* the script's code.
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*
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* @param Element The Xeromyces object that represents
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* the script-tag.
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* @param pFile The Xeromyces object for the file being read
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* @param Paths Output set of file paths that this script is loaded from.
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*
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* @see LoadXmlFile()
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*/
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void Xeromyces_ReadScript(XMBElement Element, CXeromyces* pFile, boost::unordered_set<VfsPath>& Paths);
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/**
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* Reads in the element \<sprite\> (the XMBElement) and stores the
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* result in a new CGUISprite.
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*
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* @param Element The Xeromyces object that represents
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* the sprite-tag.
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* @param pFile The Xeromyces object for the file being read
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*
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* @see LoadXmlFile()
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*/
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void Xeromyces_ReadSprite(XMBElement Element, CXeromyces* pFile);
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/**
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* Reads in the element \<image\> (the XMBElement) and stores the
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* result within the CGUISprite.
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*
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* @param Element The Xeromyces object that represents
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* the image-tag.
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* @param pFile The Xeromyces object for the file being read
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* @param parent Parent sprite.
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*
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* @see LoadXmlFile()
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*/
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void Xeromyces_ReadImage(XMBElement Element, CXeromyces* pFile, CGUISprite& parent);
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/**
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* Reads in the element \<effect\> (the XMBElement) and stores the
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* result within the SGUIImageEffects.
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*
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* @param Element The Xeromyces object that represents
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* the image-tag.
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* @param pFile The Xeromyces object for the file being read
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* @param effects Effects object to add this effect to.
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*
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* @see LoadXmlFile()
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*/
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void Xeromyces_ReadEffects(XMBElement Element, CXeromyces* pFile, SGUIImageEffects& effects);
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/**
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* Reads in the element \<style\> (the XMBElement) and stores the
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* result in m_Styles.
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*
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* @param Element The Xeromyces object that represents
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* the style-tag.
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* @param pFile The Xeromyces object for the file being read
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*
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* @see LoadXmlFile()
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*/
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void Xeromyces_ReadStyle(XMBElement Element, CXeromyces* pFile);
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/**
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* Reads in the element \<scrollbar\> (the XMBElement) and stores the
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* result in m_ScrollBarStyles.
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*
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* @param Element The Xeromyces object that represents
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* the scrollbar-tag.
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* @param pFile The Xeromyces object for the file being read
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*
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* @see LoadXmlFile()
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*/
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void Xeromyces_ReadScrollBarStyle(XMBElement Element, CXeromyces* pFile);
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/**
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* Reads in the element \<icon\> (the XMBElement) and stores the
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* result in m_Icons.
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*
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* @param Element The Xeromyces object that represents
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* the scrollbar-tag.
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* @param pFile The Xeromyces object for the file being read
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*
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* @see LoadXmlFile()
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*/
|
|
void Xeromyces_ReadIcon(XMBElement Element, CXeromyces* pFile);
|
|
|
|
/**
|
|
* Reads in the element \<tooltip\> (the XMBElement) and stores the
|
|
* result as an object with the name __tooltip_#.
|
|
*
|
|
* @param Element The Xeromyces object that represents
|
|
* the scrollbar-tag.
|
|
* @param pFile The Xeromyces object for the file being read
|
|
*
|
|
* @see LoadXmlFile()
|
|
*/
|
|
void Xeromyces_ReadTooltip(XMBElement Element, CXeromyces* pFile);
|
|
|
|
/**
|
|
* Reads in the element \<color\> (the XMBElement) and stores the
|
|
* result in m_PreDefinedColors
|
|
*
|
|
* @param Element The Xeromyces object that represents
|
|
* the scrollbar-tag.
|
|
* @param pFile The Xeromyces object for the file being read
|
|
*
|
|
* @see LoadXmlFile()
|
|
*/
|
|
void Xeromyces_ReadColor(XMBElement Element, CXeromyces* pFile);
|
|
|
|
//@}
|
|
|
|
private:
|
|
|
|
// Variables
|
|
|
|
//--------------------------------------------------------
|
|
/** @name Miscellaneous */
|
|
//--------------------------------------------------------
|
|
//@{
|
|
|
|
shared_ptr<ScriptInterface> m_ScriptInterface;
|
|
|
|
/**
|
|
* don't want to pass this around with the
|
|
* ChooseMouseOverAndClosest broadcast -
|
|
* we'd need to pack this and pNearest in a struct
|
|
*/
|
|
CPos m_MousePos;
|
|
|
|
/**
|
|
* Indicates which buttons are pressed (bit 0 = LMB,
|
|
* bit 1 = RMB, bit 2 = MMB)
|
|
*/
|
|
unsigned int m_MouseButtons;
|
|
|
|
// Tooltip
|
|
GUITooltip m_Tooltip;
|
|
|
|
//@}
|
|
//--------------------------------------------------------
|
|
/** @name Objects */
|
|
//--------------------------------------------------------
|
|
//@{
|
|
|
|
/**
|
|
* Base Object, all its children are considered parentless
|
|
* because this is not a real object per se.
|
|
*/
|
|
IGUIObject* m_BaseObject;
|
|
|
|
/**
|
|
* Focused object!
|
|
* Say an input box that is selected. That one is focused.
|
|
* There can only be one focused object.
|
|
*/
|
|
IGUIObject* m_FocusedObject;
|
|
|
|
/**
|
|
* Just pointers for fast name access, each object
|
|
* is really constructed within its parent for easy
|
|
* recursive management.
|
|
* Notice m_BaseObject won't belong here since it's
|
|
* not considered a real object.
|
|
*/
|
|
map_pObjects m_pAllObjects;
|
|
|
|
/**
|
|
* Number of object that has been given name automatically.
|
|
* the name given will be '__internal(#)', the number (#)
|
|
* being this variable. When an object's name has been set
|
|
* as followed, the value will increment.
|
|
*/
|
|
int m_InternalNameNumber;
|
|
|
|
/**
|
|
* Function pointers to functions that constructs
|
|
* IGUIObjects by name... For instance m_ObjectTypes["button"]
|
|
* is filled with a function that will "return new CButton();"
|
|
*/
|
|
std::map<CStr, ConstructObjectFunction> m_ObjectTypes;
|
|
|
|
/**
|
|
* Map from hotkey names to objects that listen to the hotkey.
|
|
* (This is an optimisation to avoid recursing over the whole GUI
|
|
* tree every time a hotkey is pressed).
|
|
*/
|
|
std::map<CStr, std::vector<IGUIObject*> > m_HotkeyObjects;
|
|
|
|
/**
|
|
* Map from hotkey names to functions that are triggered if the hotkey is pressed.
|
|
* Contrary to object hotkeys, this allows for only one global function per hotkey name.
|
|
*/
|
|
std::map<CStr, JS::PersistentRootedValue> m_GlobalHotkeys;
|
|
|
|
//--------------------------------------------------------
|
|
// Databases
|
|
// These are loaded from XML files and marked as noncopyable and const to
|
|
// rule out unintentional modification and copy, especially during Draw calls.
|
|
//--------------------------------------------------------
|
|
|
|
// Colors
|
|
std::map<CStr, const CGUIColor> m_PreDefinedColors;
|
|
|
|
// Sprites
|
|
std::map<CStr, const CGUISprite*> m_Sprites;
|
|
|
|
// Styles
|
|
std::map<CStr, const SGUIStyle> m_Styles;
|
|
|
|
// Scroll-bar styles
|
|
std::map<CStr, const SGUIScrollBarStyle> m_ScrollBarStyles;
|
|
|
|
// Icons
|
|
std::map<CStr, const SGUIIcon> m_Icons;
|
|
};
|
|
|
|
#endif // INCLUDED_CGUI
|