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FLTK 1.3.4
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A drawing surface that's susceptible to receive graphical output.
More...
#include <Fl_Device.H>
Public Member Functions | |
| const char * | class_name () |
Returns the name of the class of this object. More... | |
| 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 void | set_current (void) |
| Make this surface the current 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 Member Functions | |
| static Fl_Surface_Device * | surface () |
| The current drawing surface. More... | |
Static Public Attributes | |
| 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... | |
Protected Member Functions | |
| Fl_Surface_Device (Fl_Graphics_Driver *graphics_driver) | |
| Constructor that sets the graphics driver to use for the created surface. More... | |
A drawing surface that's susceptible to receive graphical output.
Any FLTK application has at any time a current drawing surface to which all drawing requests are directed. The current surface is given by Fl_Surface_Device::surface(). When main() begins running, the current drawing surface has been set to the computer's display, an instance of the Fl_Display_Device class.
A drawing surface other than the computer's display, is typically used as follows:
surface, an object from a particular Fl_Surface_Device derived class (e.g., Fl_Copy_Surface, Fl_Printer). Fl_Surface_Device *old_current = Fl_Surface_Device::surface(); surface->set_current(); to redirect all graphics requests to surface which becomes the new current drawing surface (not necessary with class Fl_Printer because it is done by Fl_Printer::start_job()). old_current->set_current();. surface.
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inlineprotected |
Constructor that sets the graphics driver to use for the created surface.
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inlinevirtual |
The destructor.
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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_Device.
Reimplemented in Fl_Display_Device, Fl_PostScript_File_Device, Fl_Printer, Fl_Paged_Device, Fl_PostScript_Printer, Fl_System_Printer, and Fl_Image_Surface.
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inline |
Sets the graphics driver of this drawing surface.
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inline |
Returns the graphics driver of this drawing surface.
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virtual |
Make this surface the current drawing surface.
This surface will receive all future graphics requests.
Reimplemented in Fl_Printer, Fl_Copy_Surface, and Fl_Image_Surface.
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inlinestatic |
The current drawing surface.
In other words, the Fl_Surface_Device object that currently receives all graphics output