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Unigine::Gui Class

Header: #include <UnigineGui.h>

Creates a GUI. Different types of GUI widgets can be either added to one of the following:

  • To the system GUI (Unigine user interface) that is rendered on top of application window.
  • To the GUI object positioned in the world. In this case, any postprocessing filter can be applied.
Default values returned by the following methods can be overridden via RC files defining a custom GUI.

Gui Class

Members


Ptr<Gui> get( )

Returns a pointer to the GUI.

Return value

Pointer to the GUI.

int getActivity( )

Returns a value indicating if any widget in the GUI is in focus.

Return value

1 if any widget is focused; otherwise, 0.

Ptr<Widget> getChild( int num )

Returns a child widget with a given number.

Arguments

  • int num - Child widget number.

Return value

Child widget.

int isChild( const Ptr<Widget> & widget )

Checks if a given widget is a child of the current GUI.

Arguments

  • const Ptr<Widget> & widget - Widget to check.

Return value

Returns 1 if the given widget is a child; otherwise, 0.

void setColor( const Math::vec4 & color )

Sets a color for the global color multiplier. The default is equivalent to #ffffff (white).

Arguments

  • const Math::vec4 & color - Color multiplier.

Math::vec4 getColor( )

Returns the color of the global color multiplier.

Return value

Color multiplier.

void setDefaultAlpha( float alpha )

Sets a standard alpha value for widgets.

Arguments

  • float alpha - Alpha value. 0 means completely transparent.

float getDefaultAlpha( )

Returns the standard alpha value of a widget.

Return value

Alpha value.

void setDefaultColor( const Math::vec4 & color )

Sets a standard font color for widgets. The default is equivalent to #ddddff (blue-white).

Arguments

  • const Math::vec4 & color - Font color.

Math::vec4 getDefaultColor( )

Returns the standard font color of a widget.

Return value

Font color.

void setDefaultSize( int size )

Sets a standard font size for widgets.

Arguments

  • int size - Font size.

int getDefaultSize( )

Returns the standard font size of a widget.

Return value

Font size.

void setDisabledAlpha( float alpha )

Sets an alpha value for disabled widgets.

Arguments

  • float alpha - Alpha value. 0 means completely transparent.

float getDisabledAlpha( )

Returns the alpha value of a disabled widget.

Return value

Alpha value.

void setDisabledColor( const Math::vec4 & color )

Sets a font color for disabled widgets. The default is equivalent to #869caa (light bluish).

Arguments

  • const Math::vec4 & color - Font color.

Math::vec4 getDisabledColor( )

Returns the font color of a disabled widget.

Return value

Font color.

void setDisabledEnabled( int enabled )

Sets a value indicating if a widget can be rendered as disabled (i.e. change its color accordingly), when necessary.

Arguments

  • int enabled - Positive value if the widget can be rendered as disabled; otherwise, 0.

int isDisabledEnabled( )

Returns a value indicating if a widget can be rendered as disabled (i.e. change its color accordingly), when necessary.

Return value

1 if the widget can be rendered as disabled; otherwise, 0.

void setEnabled( int enabled )

Sets a value indicating if a widget should be enabled/disabled.

Arguments

  • int enabled - 1 to enable the GUI, 0 to disable it.

int isEnabled( )

Returns a value indicating if the GUI is enabled.

Return value

Return 1 if the GUI is enabled; otherwise, 0 is returned.

void setExposeSpeed( float speed )

Sets a duration of animation played when the widget appears.

Arguments

  • float speed - Duration in cycles per second, for example, 6 means that the duration is a 1/6 of a second.

float getExposeSpeed( )

Returns the duration of animation played when a widget appears.

Return value

Duration in cycles per second.

void setFadeInSpeed( float speed )

Sets a duration of fade-in animation played when the widget gets focused.

Arguments

  • float speed - Duration in cycles per second, for example, 8 means that the duration is a 1/8 of a second.

float getFadeInSpeed( )

Returns the duration of fade-in animation played when a widget gets focused.

Return value

Duration in cycles per second.

void setFadeOutSpeed( float speed )

Sets a duration of fade-out animation played when the widget loses focus.

Arguments

  • float speed - Duration in cycles per second, for example, 4 means that the duration is a 1/4 of a second.

float getFadeOutSpeed( )

Returns the duration of fade-out animation played when a widget loses focus.

Return value

Duration in cycles per second.

Ptr<Widget> getFocus( )

Returns the widget that is currently in focus.

Return value

Focused widget smart pointer.

void setFocusedAlpha( float alpha )

Sets an alpha value for focused widgets. The default is 1 (completely opaque).

Arguments

  • float alpha - Alpha value. 0 means completely transparent.

float getFocusedAlpha( )

Returns the alpha value of a focused widget.

Return value

Alpha value.

void setFocusedColor( const Math::vec4 & color )

Sets an font color for focused widgets. The default is equivalent to #ffffff (white).

Arguments

  • const Math::vec4 & color - Font color.

Math::vec4 getFocusedColor( )

Returns the font color of a focused widget.

Return value

Font color.

void setFocusedEnabled( int enabled )

Sets a value indicating if a widget can be rendered as focused on (i.e. change its color accordingly), when necessary.

Arguments

  • int enabled - Positive value if the widget can be rendered as focused on; otherwise, 0.

int isFocusedEnabled( )

Returns a value indicating if a widget can be rendered as focused on (i.e. change its color accordingly), when necessary.

Return value

1 if the widget can be rendered as focused on; otherwise, 0.

void setFocusedPermanent( int permanent )

Changes the permanent color of the focused widget.

Arguments

  • int permanent - 1 - a font color is overridden with the global GUI focused color; 0 - a font color is unchanged.

int isFocusedPermanent( )

Returns a value indicating if the permanent color of the focused widget is changed.

Return value

1 if the font color is overridden with the global GUI focused color; 0 if the font color is unchanged.

int setFont( const char * name )

Changes the font used in the system GUI.

Arguments

  • const char * name - Path to the font file.

Return value

1 if the font is successfully changed; otherwise, 0.

int getHeight( )

Returns the current screen height.

Return value

Screen height, in pixels.

void setHidden( int hidden )

Sets a value indicating if a widget should not be rendered.

Arguments

  • int hidden - 1 to show the GUI, 0 to hide it.

int isHidden( )

Returns a value indicating if a widget is rendered visible.

Return value

1 if the widget is rendered; otherwise, 0.

int getKeyActivity( unsigned int key )

Checks if a given key already has a special purpose for the widget in focus.

Arguments

  • unsigned int key - One of the standard ASCII control codes or one of the APP_KEY_* pre-defined variables.

Return value

1 if the key cannot be used; otherwise, 0.

void setMouseButton( int button )

Sets a mouse button, which input should be received.

Arguments

int getMouseButton( )

Returns the mouse button, which input is received.

Return value

APP_BUTTON_LEFT or APP_BUTTON_RIGHT or APP_BUTTON_MIDDLE.

void setMouseCursor( int cursor )

Sets a mouse pointer to display.

Arguments

  • int cursor - One of the CURSOR_* pre-defined variables.

int getMouseCursor( )

One of the CURSOR_* pre-defined variables.

Return value

Returns the type of mouse pointer currently displayed.

int getMouseDX( )

Returns the difference between the previous position of the mouse pointer and the current one along the X axis.

Return value

Difference along the X axis.

int getMouseDY( )

Returns the difference between the previous position of the mouse pointer and the current one along the Y axis.

Return value

Difference along the Y axis.

void setMouseEnabled( int enabled )

Enables or disables rendering of the mouse cursor.

Arguments

  • int enabled - 1 to enable the mouse, 0 to disable it.

int isMouseEnabled( )

Returns a value indicating if the mouse cursor is rendered.

Return value

1 if the mouse is rendered; otherwise, 0.

void setMouseGrab( int grab )

Sets a value indicating if the mouse pointer is bound to the GUI.

Arguments

  • int grab - 1 if the mouse pointer cannot leave the GUI; otherwise, 0.

int getMouseGrab( )

Returns a value indicating if the mouse pointer is bound to the GUI.

Return value

1 if the mouse pointer cannot leave the GUI; otherwise, 0.

void setMouseSprite( const Ptr<WidgetSprite> & sprite )

Sets a custom mouse pointer.

Arguments

  • const Ptr<WidgetSprite> & sprite - Sprite with a custom mouse pointer, or NULL to fall back to the standard mouse pointer.

Ptr<WidgetSprite> getMouseSprite( )

Returns the custom mouse pointer currently in use.

Return value

Sprite with a custom mouse pointer, or NULL if the standard mouse pointer is used.

int getMouseX( )

Returns the current X coordinate of the mouse pointer in the coordinate system of the application window.

Return value

X coordinate of the mouse pointer.

int getMouseY( )

Returns the current Y coordinate of the mouse pointer in the coordinate system of the application window.

Return value

Y coordinate of the mouse pointer.

int getNumChildren( )

Returns the number of widgets in the GUI.

Return value

Number of widgets.

Ptr<Widget> getOverlappedFocus( )

Returns the widget placed under the currently focused widget.

Return value

Overlapped widget.

int isOwner( )

Ptr<Widget> getPermanentFocus( )

Returns a widget that is always in focus.

Return value

Widget always in focus.

int setResource( const char * name )

Changes the resource skin file used in the system GUI.

Arguments

  • const char * name - Path to the rc file.

Return value

1 if the resource file is successfully changed; otherwise, 0.

int setSkin( const char * name )

Changes the GUI skin used in the system GUI.

Arguments

  • const char * name - Path to the skin file (an RC file and textures).

Return value

1 if the skin is successfully changed; otherwise, 0.

void setToolTip( int x, int y, const char * str )

Sets a tooltip.

Arguments

  • int x - X coordinate of the tooltip position.
  • int y - Y coordinate of the tooltip position.
  • const char * str - ToolTip text.

void setToolTipAlpha( float alpha )

Sets an alpha value for tooltips. The default is 0.95 (translucent).

Arguments

  • float alpha - Alpha value. 0 means completely transparent.

float getToolTipAlpha( )

Returns the alpha value of a tooltip.

Return value

Alpha value.

void setToolTipColor( const Math::vec4 & color )

Sets a font color for tooltips. The default is equivalent to #000000 (black).

Arguments

  • const Math::vec4 & color - Font color.

Math::vec4 getToolTipColor( )

Returns the font color of a tooltip.

Return value

Font color.

void setToolTipEnabled( int enabled )

Sets a value indicating whether tooltips are available or not.

Arguments

  • int enabled - 1 to enable tooltips; otherwise, 0.

int isToolTipEnabled( )

Returns a value indicating if tooltips are available or not.

Return value

Return 1 if tooltips are enabled; otherwise, 0.

int getToolTipHeight( const char * str )

Returns a height of the given tooltip.
Notice
Height of a single-line tooltip is equal to 21 pixels.

Arguments

  • const char * str - A tooltip text.

Return value

Height of the given tooltip (in pixels).

void setToolTipSize( int size )

Sets a font size for widgets.

Arguments

  • int size - Font size.

int getToolTipSize( )

Returns the font size of a tooltip.

Return value

Font size.

const char * getToolTipText( )

Gets GUI ToolTip text.

Return value

GUI ToolTip text.

void setToolTipTime( float time )

Sets a delay before tooltip appearance.

Arguments

  • float time - Delay in cycles per second.

float getToolTipTime( )

Returns the delay before tooltip appearing.

Return value

Delay in cycles per second.

void setToolTipWidth( int width )

Sets the width for the tooltip.

Arguments

  • int width - New tooltip width.

int getToolTipWidth( const char * str )

Returns the current width of the tooltip.

Arguments

  • const char * str - A tooltip text.

Return value

Width of the tooltip.

int getToolTipWidth( )

Returns the current width of the tooltip.

Return value

Width of the tooltip.

int getToolTipX( )

Gets GUI ToolTip X position.

Return value

GUI ToolTip X position.

int getToolTipY( )

Gets GUI ToolTip Y position.

Return value

GUI ToolTip Y position.

void setTransform( const Math::mat4 & transform )

Sets the global GUI transformation matrix. This 2D matrix can be tilted, rotated, moved or modified in many ways in 3D space.

Arguments

  • const Math::mat4 & transform - Transformation matrix.

Math::mat4 getTransform( )

Returns GUI transformation matrix.

Return value

GUI transformation matrix.

void setTransparentAlpha( float alpha )

Sets an alpha value for transparent widgets. A widget is transparent, if it uses blending. The default is 0.8 (translucent).

Arguments

  • float alpha - Alpha value. 0 means completely transparent.

float getTransparentAlpha( )

Returns the alpha value of a transparent widget. A widget is transparent, if it uses blending.

Return value

Alpha value.

void setTransparentColor( const Math::vec4 & color )

Sets a font color for transparent widgets. A widget is transparent, if it uses blending. The default is equivalent to #869caa (light bluish).

Arguments

  • const Math::vec4 & color - Font color.

Math::vec4 getTransparentColor( )

Returns the font color of a transparent widget. A widget is transparent, if it uses blending.

Return value

Font color of a transparent widget.

void setTransparentEnabled( int enabled )

Sets a value indicating if a widget can be rendered as transparent (i.e. change its color accordingly), when necessary. For example, this function allows to control whether the drop-down list of combobox is transparent or not.

Arguments

  • int enabled - Positive value if the widget can be rendered as transparent; otherwise, 0.

int isTransparentEnabled( )

Returns a value indicating if a widget can be rendered as transparent (i.e. change its color accordingly), when necessary. For example, it can indicate whether the drop-down list of combobox is transparent or not.

Return value

1 if the widget can be rendered as transparent; otherwise, 0.

int getWidth( )

Returns the current screen width.

Return value

Screen width, in pixels.

void addChild( const Ptr<Widget> & widget, int flags = 0 )

Adds a given widget to the GUI.

Arguments

  • const Ptr<Widget> & widget - Widget to add.
  • int flags - One of the ALIGN_* pre-defined variables. This is an optional parameter.

int addDictionary( const char * name, const char * language = 0 )

Adds a new dictionary with localized interface strings. Dictionaries cannot be modified in run-time.

Arguments

  • const char * name - Path to the dictionary file.
  • const char * language - Name of the dictionary language.

Return value

Returns 1 if the dictionary is added successfully; otherwise, 0.

void clearDictionaries( )

Clears all dictionaries.

int clearTexture( const char * name )

Clears the specified GUI texture file cache.

Arguments

  • const char * name - Texture name.

Return value

1 if the texture is successfully cleared; otherwise, 0.

Ptr<Gui> create( const char * name = 0 )

GUI constructor.

Arguments

  • const char * name - GUI skin name.

Return value

Pointer to the created GUI.

void destroy( )

Destroys all GUI resources.

void disable( )

Disables GUI rendering.

void enable( int width, int height )

Enables GUI rendering.

Arguments

  • int width - GUI width.
  • int height - GUI height.

void grab( )

Sets the owner flag to 1 for the GUI pointer. The GUI should not be handled by the class after this function is called

int hasTranslation( const char * arg1 )

Returns a value indicating if there is translation for a given string in the localization dictionary.

Arguments

  • const char * arg1 - String to check.

Return value

1 if there is translation for the given string; otherwise, 0.

Math::vec4 parseColor( const char * str )

Converts a color string in the Web format (RRGGBB / #RRGGBB or RRGGBBAA / #RRGGBBAA) into its vec4 equivalent.

Arguments

  • const char * str - Color string in the Web format.

Return value

Color value in vec4.

void release( )

Sets the owner flag to 0 for the GUI pointer. The GUI should be handled by the class after this function is called.

void removeChild( const Ptr<Widget> & widget )

Removes a child widget from the list of children.

Arguments

  • const Ptr<Widget> & widget - Child widget to be removed.

void removeFocus( )

Removes focus from the GUI.

void render( int mouse_x, int mouse_y, int mouse_button, int mouse_show )

Renders GUI with specified parameters.

Arguments

  • int mouse_x - X mouse position.
  • int mouse_y - Y mouse position.
  • int mouse_button - Pressed mouse button.
  • int mouse_show - Show mouse cursor flag.

void replaceChild( const Ptr<Widget> & widget, const Ptr<Widget> & old_widget, int flags = 0 )

Replaces a given widget in the GUI with another widget.

Arguments

  • const Ptr<Widget> & widget - Replacement widget.
  • const Ptr<Widget> & old_widget - Widget to be replaced.
  • int flags - One of the ALIGN_* pre-defined variables. This is an optional parameter.

int saveDictionary( const char * name, const char * language = 0 )

Saves the current dictionary on disk. This function can be used to save the currently loaded dictionary into another file.

Arguments

  • const char * name - Name of the dictionary language.
  • const char * language - Dictionary language name.

Return value

Returns 1 if the dictionary is saved successfully; otherwise, 0.

const char * translate( const char * str )

Translates the string using dictionary.

Arguments

  • const char * str - String to translate.

Return value

Target (translated) string if it is found in the localization dictionary; otherwise, the source string.

void update( float ifps )

Updates GUI.

Arguments

  • float ifps - Inverse FPS counter.
Last update: 2019-05-16