| FLTK 1.3.3
    | 
Directs all graphics requests to an Fl_Image. More...
#include <Fl_Image_Surface.H>
 
  
 | Public Member Functions | |
| const char * | class_name () | 
| Returns the name of the class of this object.  More... | |
| void | draw (Fl_Widget *, int delta_x=0, int delta_y=0) | 
| Draws a widget in the image surface.  More... | |
| Fl_Image_Surface (int w, int h) | |
| The constructor.  More... | |
| Fl_RGB_Image * | image () | 
| Returns an image made of all drawings sent to the Fl_Image_Surface object.  More... | |
| void | set_current () | 
| Use this drawing surface for future graphics requests.  More... | |
| ~Fl_Image_Surface () | |
| The destructor. | |
|  Public Member Functions inherited from Fl_Surface_Device | |
| void | driver (Fl_Graphics_Driver *graphics_driver) | 
| Sets the graphics driver of this drawing surface.  More... | |
| Fl_Graphics_Driver * | driver () | 
| Returns the graphics driver of this drawing surface.  More... | |
| virtual | ~Fl_Surface_Device () | 
| The destructor.  More... | |
|  Public Member Functions inherited from Fl_Device | |
| virtual | ~Fl_Device () | 
| Virtual destructor.  More... | |
| Static Public Attributes | |
| static const char * | class_id = "Fl_Image_Surface" | 
|  Static Public Attributes inherited from Fl_Surface_Device | |
| static const char * | class_id = "Fl_Surface_Device" | 
|  Static Public Attributes inherited from Fl_Device | |
| static const char * | class_id = "Fl_Device" | 
| A string that identifies each subclass of Fl_Device.  More... | |
| Additional Inherited Members | |
|  Static Public Member Functions inherited from Fl_Surface_Device | |
| static Fl_Surface_Device * | surface () | 
| the surface that currently receives graphics output | |
|  Protected Member Functions inherited from Fl_Surface_Device | |
| Fl_Surface_Device (Fl_Graphics_Driver *graphics_driver) | |
| Constructor that sets the graphics driver to use for the created surface.  More... | |
Directs all graphics requests to an Fl_Image.
After creation of an Fl_Image_Surface object, call set_current() on it, and all subsequent graphics requests will be recorded in the image. It's possible to draw widgets (using Fl_Image_Surface::draw()) or to use any of the Drawing functions or the Color & Font functions. Finally, call image() on the object to obtain a newly allocated Fl_RGB_Image object. 
 Fl_GL_Window objects can be drawn in the image as well.
 Usage example: 
| Fl_Image_Surface::Fl_Image_Surface | ( | int | w, | 
| int | h | ||
| ) | 
The constructor.
| w | and | 
| h | give the size in pixels of the resulting image. | 
| 
 | inlinevirtual | 
Returns the name of the class of this object.
Use of the class_name() function is discouraged because it will be removed from future FLTK versions.
The class of an instance of an Fl_Device subclass can be checked with code such as:
Reimplemented from Fl_Surface_Device.
| void Fl_Image_Surface::draw | ( | Fl_Widget * | widget, | 
| int | delta_x = 0, | ||
| int | delta_y = 0 | ||
| ) | 
Draws a widget in the image surface.
| widget | any FLTK widget (e.g., standard, custom, window, GL view) to draw in the image | 
| delta_x | and | 
| delta_y | give the position in the image of the top-left corner of the widget | 
| Fl_RGB_Image * Fl_Image_Surface::image | ( | ) | 
Returns an image made of all drawings sent to the Fl_Image_Surface object.
The returned object contains its own copy of the RGB data.
| 
 | virtual | 
Use this drawing surface for future graphics requests.
Reimplemented from Fl_Surface_Device.
