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// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#ifndef __C_GUI_TAB_CONTROL_H_INCLUDED__
#define __C_GUI_TAB_CONTROL_H_INCLUDED__
#include "IGUITabControl.h"
#include "irrArray.h"
#include "IGUISkin.h"
namespace irr
{
namespace gui
{
class CGUITabControl;
class IGUIButton;
// A tab, onto which other gui elements could be added.
class CGUITab : public IGUITab
{
public:
//! constructor
CGUITab(IGUIEnvironment* environment,
IGUIElement* parent, const core::rect<s32>& rectangle,
s32 id);
//! draws the element and its children
void draw() override;
//! sets if the tab should draw its background
void setDrawBackground(bool draw=true) override;
//! sets the color of the background, if it should be drawn.
void setBackgroundColor(video::SColor c) override;
//! sets the color of the text
void setTextColor(video::SColor c) override;
//! returns true if the tab is drawing its background, false if not
bool isDrawingBackground() const override;
//! returns the color of the background
video::SColor getBackgroundColor() const override;
video::SColor getTextColor() const override;
private:
video::SColor BackColor;
bool OverrideTextColorEnabled;
video::SColor TextColor;
bool DrawBackground;
};
//! A standard tab control
class CGUITabControl : public IGUITabControl
{
public:
//! destructor
CGUITabControl(IGUIEnvironment* environment,
IGUIElement* parent, const core::rect<s32>& rectangle,
bool fillbackground=true, bool border=true, s32 id=-1);
//! destructor
virtual ~CGUITabControl();
//! Adds a tab
IGUITab* addTab(const wchar_t* caption, s32 id=-1) override;
//! Adds an existing tab
s32 addTab(IGUITab* tab) override;
//! Insert the tab at the given index
IGUITab* insertTab(s32 idx, const wchar_t* caption, s32 id=-1) override;
//! Insert an existing tab
/** Note that it will also add the tab as a child of this TabControl.
\return Index of added tab (should be same as the one passed) or -1 for failure*/
s32 insertTab(s32 idx, IGUITab* tab, bool serializationMode) override;
//! Removes a tab from the tabcontrol
void removeTab(s32 idx) override;
//! Clears the tabcontrol removing all tabs
void clear() override;
//! Returns amount of tabs in the tabcontrol
s32 getTabCount() const override;
//! Returns a tab based on zero based index
IGUITab* getTab(s32 idx) const override;
//! Brings a tab to front.
bool setActiveTab(s32 idx) override;
//! Brings a tab to front.
bool setActiveTab(IGUITab *tab) override;
//! For given given tab find it's zero-based index (or -1 for not found)
s32 getTabIndex(const IGUIElement *tab) const override;
//! Returns which tab is currently active
s32 getActiveTab() const override;
//! get the the id of the tab at the given absolute coordinates
s32 getTabAt(s32 xpos, s32 ypos) const override;
//! called if an event happened.
bool OnEvent(const SEvent& event) override;
//! draws the element and its children
void draw() override;
//! Removes a child.
void removeChild(IGUIElement* child) override;
//! Set the height of the tabs
void setTabHeight( s32 height ) override;
//! Get the height of the tabs
s32 getTabHeight() const override;
//! set the maximal width of a tab. Per default width is 0 which means "no width restriction".
void setTabMaxWidth(s32 width ) override;
//! get the maximal width of a tab
s32 getTabMaxWidth() const override;
//! Set the alignment of the tabs
//! note: EGUIA_CENTER is not an option
void setTabVerticalAlignment( gui::EGUI_ALIGNMENT alignment ) override;
//! Get the alignment of the tabs
gui::EGUI_ALIGNMENT getTabVerticalAlignment() const override;
//! Set the extra width added to tabs on each side of the text
void setTabExtraWidth( s32 extraWidth ) override;
//! Get the extra width added to tabs on each side of the text
s32 getTabExtraWidth() const override;
//! Update the position of the element, decides scroll button status
void updateAbsolutePosition() override;
private:
void scrollLeft();
void scrollRight();
//! Indicates whether the tabs overflow in X direction
bool needScrollControl( s32 startIndex=0, bool withScrollControl=false, s32 *pos_rightmost=nullptr );
//! Left index calculation based on the selected tab
s32 calculateScrollIndexFromActive();
s32 calcTabWidth(IGUIFont* font, const wchar_t* text) const;
core::rect<s32> calcTabPos();
void setVisibleTab(s32 idx);
void removeTabButNotChild(s32 idx);
void recalculateScrollButtonPlacement();
void recalculateScrollBar();
void refreshSprites();
core::array<IGUITab*> Tabs;
s32 ActiveTabIndex;
bool Border;
bool FillBackground;
bool ScrollControl;
s32 TabHeight;
gui::EGUI_ALIGNMENT VerticalAlignment;
IGUIButton* UpButton;
IGUIButton* DownButton;
s32 TabMaxWidth;
s32 CurrentScrollTabIndex;
s32 TabExtraWidth;
};
} // end namespace gui
} // end namespace irr
#endif
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