Functions
Coordinate Mapping Functions

Functions that are used to map coordinates from the canvas to the screen or the screen to the canvas. More...

Functions

EOAPI int evas_canvas_coord_world_x_to_screen (Evas_Coord x)
 Convert/scale a canvas co-ordinate into output screen co-ordinates. More...
 
EOAPI Evas_Coord evas_canvas_coord_screen_y_to_world (int y)
 Convert/scale an output screen co-ordinate into canvas co-ordinates. More...
 
EOAPI Evas_Coord evas_canvas_coord_screen_x_to_world (int x)
 Convert/scale an output screen co-ordinate into canvas co-ordinates. More...
 
EOAPI int evas_canvas_coord_world_y_to_screen (Evas_Coord y)
 Convert/scale a canvas co-ordinate into output screen co-ordinates. More...
 
int evas::canvas::coord_world_x_to_screen (Evas_Coord x_) const
 Convert/scale a canvas co-ordinate into output screen co-ordinates. More...
 
Evas_Coord evas::canvas::coord_screen_y_to_world (int y_) const
 Convert/scale an output screen co-ordinate into canvas co-ordinates. More...
 
Evas_Coord evas::canvas::coord_screen_x_to_world (int x_) const
 Convert/scale an output screen co-ordinate into canvas co-ordinates. More...
 
int evas::canvas::coord_world_y_to_screen (Evas_Coord y_) const
 Convert/scale a canvas co-ordinate into output screen co-ordinates. More...
 
int evas_coord_world_x_to_screen (const Evas_Canvas *obj, Evas_Coord x)
 Convert/scale a canvas co-ordinate into output screen co-ordinates. More...
 
Evas_Coord evas_coord_screen_y_to_world (const Evas_Canvas *obj, int y)
 Convert/scale an output screen co-ordinate into canvas co-ordinates. More...
 
Evas_Coord evas_coord_screen_x_to_world (const Evas_Canvas *obj, int x)
 Convert/scale an output screen co-ordinate into canvas co-ordinates. More...
 
int evas_coord_world_y_to_screen (const Evas_Canvas *obj, Evas_Coord y)
 Convert/scale a canvas co-ordinate into output screen co-ordinates. More...
 

Detailed Description

Functions that are used to map coordinates from the canvas to the screen or the screen to the canvas.

Function Documentation

EOAPI int evas_canvas_coord_world_x_to_screen ( Evas_Coord  x)

Convert/scale a canvas co-ordinate into output screen co-ordinates.

Returns
The output/screen co-ordinate translated to output co-ordinates

This function takes in a horizontal co-ordinate as the x parameter and converts it into output units, accounting for output size, viewport size and location, returning it as the function return value. If e is invalid, the results are undefined.

Example:

1 extern Evas *evas;
2 int screen_x;
3 extern Evas_Coord canvas_x;
4 
5 screen_x = evas_coord_world_x_to_screen(evas, canvas_x);
Parameters
[in]xThe canvas x co-ordinate

Referenced by evas_coord_world_x_to_screen().

EOAPI Evas_Coord evas_canvas_coord_screen_y_to_world ( int  y)

Convert/scale an output screen co-ordinate into canvas co-ordinates.

Returns
The screen co-ordinate translated to canvas unit co-ordinates

This function takes in a vertical co-ordinate as the y parameter and converts it into canvas units, accounting for output size, viewport size and location, returning it as the function return value. If e is invalid, the results are undefined.

Example:

1 extern Evas *evas;
2 extern int screen_y;
3 Evas_Coord canvas_y;
4 
5 canvas_y = evas_coord_screen_y_to_world(evas, screen_y);
Parameters
[in]yThe screen/output y co-ordinate

Referenced by evas_coord_screen_y_to_world().

EOAPI Evas_Coord evas_canvas_coord_screen_x_to_world ( int  x)

Convert/scale an output screen co-ordinate into canvas co-ordinates.

Returns
The screen co-ordinate translated to canvas unit co-ordinates

This function takes in a horizontal co-ordinate as the x parameter and converts it into canvas units, accounting for output size, viewport size and location, returning it as the function return value. If e is invalid, the results are undefined.

Example:

1 extern Evas *evas;
2 extern int screen_x;
3 Evas_Coord canvas_x;
4 
5 canvas_x = evas_coord_screen_x_to_world(evas, screen_x);
Parameters
[in]xThe screen/output x co-ordinate

Referenced by evas_coord_screen_x_to_world().

EOAPI int evas_canvas_coord_world_y_to_screen ( Evas_Coord  y)

Convert/scale a canvas co-ordinate into output screen co-ordinates.

Returns
The output/screen co-ordinate translated to output co-ordinates

This function takes in a vertical co-ordinate as the x parameter and converts it into output units, accounting for output size, viewport size and location, returning it as the function return value. If e is invalid, the results are undefined.

Example:

1 extern Evas *evas;
2 int screen_y;
3 extern Evas_Coord canvas_y;
4 
5 screen_y = evas_coord_world_y_to_screen(evas, canvas_y);
Parameters
[in]yThe canvas y co-ordinate

Referenced by evas_coord_world_y_to_screen().

int evas::canvas::coord_world_x_to_screen ( Evas_Coord  x_) const

Convert/scale a canvas co-ordinate into output screen co-ordinates.

Returns
The output/screen co-ordinate translated to output co-ordinates

This function takes in a horizontal co-ordinate as the x parameter and converts it into output units, accounting for output size, viewport size and location, returning it as the function return value. If e is invalid, the results are undefined.

Example:

extern Evas *evas;
int screen_x;
extern Evas_Coord canvas_x;
screen_x = evas_coord_world_x_to_screen(evas, canvas_x);
Parameters
xThe canvas x co-ordinate
Evas_Coord evas::canvas::coord_screen_y_to_world ( int  y_) const

Convert/scale an output screen co-ordinate into canvas co-ordinates.

Returns
The screen co-ordinate translated to canvas unit co-ordinates

This function takes in a vertical co-ordinate as the y parameter and converts it into canvas units, accounting for output size, viewport size and location, returning it as the function return value. If e is invalid, the results are undefined.

Example:

extern Evas *evas;
extern int screen_y;
Evas_Coord canvas_y;
canvas_y = evas_coord_screen_y_to_world(evas, screen_y);
Parameters
yThe screen/output y co-ordinate
Evas_Coord evas::canvas::coord_screen_x_to_world ( int  x_) const

Convert/scale an output screen co-ordinate into canvas co-ordinates.

Returns
The screen co-ordinate translated to canvas unit co-ordinates

This function takes in a horizontal co-ordinate as the x parameter and converts it into canvas units, accounting for output size, viewport size and location, returning it as the function return value. If e is invalid, the results are undefined.

Example:

extern Evas *evas;
extern int screen_x;
Evas_Coord canvas_x;
canvas_x = evas_coord_screen_x_to_world(evas, screen_x);
Parameters
xThe screen/output x co-ordinate
int evas::canvas::coord_world_y_to_screen ( Evas_Coord  y_) const

Convert/scale a canvas co-ordinate into output screen co-ordinates.

Returns
The output/screen co-ordinate translated to output co-ordinates

This function takes in a vertical co-ordinate as the x parameter and converts it into output units, accounting for output size, viewport size and location, returning it as the function return value. If e is invalid, the results are undefined.

Example:

extern Evas *evas;
int screen_y;
extern Evas_Coord canvas_y;
screen_y = evas_coord_world_y_to_screen(evas, canvas_y);
Parameters
yThe canvas y co-ordinate
int evas_coord_world_x_to_screen ( const Evas_Canvas *  obj,
Evas_Coord  x 
)

Convert/scale a canvas co-ordinate into output screen co-ordinates.

Returns
The output/screen co-ordinate translated to output co-ordinates

This function takes in a horizontal co-ordinate as the x parameter and converts it into output units, accounting for output size, viewport size and location, returning it as the function return value. If e is invalid, the results are undefined.

Example:

1 extern Evas *evas;
2 int screen_x;
3 extern Evas_Coord canvas_x;
4 
5 screen_x = evas_coord_world_x_to_screen(evas, canvas_x);
Parameters
[in]xThe canvas x co-ordinate

References evas_canvas_coord_world_x_to_screen().

Evas_Coord evas_coord_screen_y_to_world ( const Evas_Canvas *  obj,
int  y 
)

Convert/scale an output screen co-ordinate into canvas co-ordinates.

Returns
The screen co-ordinate translated to canvas unit co-ordinates

This function takes in a vertical co-ordinate as the y parameter and converts it into canvas units, accounting for output size, viewport size and location, returning it as the function return value. If e is invalid, the results are undefined.

Example:

1 extern Evas *evas;
2 extern int screen_y;
3 Evas_Coord canvas_y;
4 
5 canvas_y = evas_coord_screen_y_to_world(evas, screen_y);
Parameters
[in]yThe screen/output y co-ordinate

References evas_canvas_coord_screen_y_to_world().

Evas_Coord evas_coord_screen_x_to_world ( const Evas_Canvas *  obj,
int  x 
)

Convert/scale an output screen co-ordinate into canvas co-ordinates.

Returns
The screen co-ordinate translated to canvas unit co-ordinates

This function takes in a horizontal co-ordinate as the x parameter and converts it into canvas units, accounting for output size, viewport size and location, returning it as the function return value. If e is invalid, the results are undefined.

Example:

1 extern Evas *evas;
2 extern int screen_x;
3 Evas_Coord canvas_x;
4 
5 canvas_x = evas_coord_screen_x_to_world(evas, screen_x);
Parameters
[in]xThe screen/output x co-ordinate

References evas_canvas_coord_screen_x_to_world().

int evas_coord_world_y_to_screen ( const Evas_Canvas *  obj,
Evas_Coord  y 
)

Convert/scale a canvas co-ordinate into output screen co-ordinates.

Returns
The output/screen co-ordinate translated to output co-ordinates

This function takes in a vertical co-ordinate as the x parameter and converts it into output units, accounting for output size, viewport size and location, returning it as the function return value. If e is invalid, the results are undefined.

Example:

1 extern Evas *evas;
2 int screen_y;
3 extern Evas_Coord canvas_y;
4 
5 screen_y = evas_coord_world_y_to_screen(evas, canvas_y);
Parameters
[in]yThe canvas y co-ordinate

References evas_canvas_coord_world_y_to_screen().