glue code between slifis gapi interface (header file gapi_glue.hpp), which defines some datatypes, and the back-end graphical and windowing library. More...

#include <cassert>
#include <cmath>
#include "gapi_glue.hpp"
#include "error_handler.hpp"
#include "debug.h"
#include <cstring>

Include dependency graph for gapi_glue.cpp:

Classes
struct	slifis_plot::FCOLOR
	private 'float' color-type ([0.0-1.0]), needed for Cairo drawing functions More...
Namespaces
namespace	slifis_plot
	This namespace includes both the set of interface functions to the backend graphical library and the plot classes, see Slifis Graphical API for plotting.
Defines
#define	SLIFIS_FONTSIZE 0.4
	Font size scale (used only in Opencv backend)
#define	GAPI_TRACE if(0) std::cerr
	Private macro for logging.
#define	GAPI_LOG if(0) std::cerr
#define	GAPI_ERROR std::cerr <<
Functions
CAIRO_GLOBALS &	slifis_plot::cairo_globals ()
	Static allocation of cairo-related static stuff, using idiom "Construct On First Use".
static GAPI_gtk_window *	slifis_plot::FindWindowByName (const std::string &name)
	Auxiliary private function.
static void	slifis_plot::RemoveWindowByName (const std::string &name)
	Auxiliary private function.
static gboolean	slifis_plot::cb_OnKeyPress (GtkWidget , GdkEventKey event, gpointer)
	Callback fo GTK window.
static gboolean	slifis_plot::generic_mouse_callback (GtkWidget , GdkEvent event, gpointer user_data)
	A generic mouse callback (GTK+ flavor) whose job is to call the user callback.
static void	slifis_plot::Paint (GtkWidget widget, GAPI_IMAGE im)
	Paints the image in the gtk+ window.
static gboolean	slifis_plot::cb_expose_event (GtkWidget widget, GdkEventExpose , gpointer image)
	callback for GTK+ backend, actually draws the image in the GTK+ window
static FCOLOR	slifis_plot::ConvertColor (GAPI_COLOR &col)
	Static utility for converting 'byte' color-type ([0-255]) to 'float' color-type ([0.0-1.0]), needed for Cairo API.
Data-types handling
GAPI_POINT	slifis_plot::GAPI_BuildPoint (int x0, int y0)
	C-style constructor for point.
GAPI_COLOR	slifis_plot::GAPI_BuildColor (char r, char g, char b)
	C-style constructor for color.
GAPI_IMAGE *	slifis_plot::GAPI_CreateImage (int w, int h)
void	slifis_plot::GAPI_ReleaseImage (GAPI_IMAGE **p_im)
Windowing and user-interface related functions
void	slifis_plot::GAPI_CreateWindow (std::string name, int x0, int y0)
	Open a window.
void	slifis_plot::GAPI_DestroyWindow (std::string wnd_name)
	Destroy the window `wnd_name`.
void	slifis_plot::GAPI_MoveWindow (std::string wnd_name, int x, int y)
	Moves the window `wnd_name`.
bool	slifis_plot::GAPI_WindowIsOpen (std::string name)
	Returns true if window is open (GTK2 version)
void	slifis_plot::GAPI_AssignCallback (std::string wnd_name, void(userMouseCB)(int event, int x, int y, int flags, void param), void *param)
	Assigns the user mouse callback `userMouseCB` to window `wnd_name`.
char	slifis_plot::GAPI_WaitKey ()
	Blocking function, until a key is pressed.
void	slifis_plot::GAPI_ShowImage (std::string wnd_name, GAPI_IMAGE *im)
	Draw image on GTK window.
Misc.
void	slifis_plot::GAPI_Init (int argc, char **argv)
	Initialize the gtk windowing engine. Called each time a window is created.
int	slifis_plot::GAPI_GetImageW (GAPI_IMAGE *p_im)
int	slifis_plot::GAPI_GetImageH (GAPI_IMAGE *p_im)
void	slifis_plot::GAPI_GetTextSize (GAPI_IMAGE im, const std::string &txt, GAPI_FONT , int &t_w, int &t_h)
	Returns size of text `txt` (Cairo version)
GAPI_FONT *	slifis_plot::GAPI_InitFont ()
	Initializes font for drawing text (Cairo version, does nothing)
bool	slifis_plot::GAPI_SaveImage (std::string filename, GAPI_IMAGE *im)
	Saves image to file, returns false on failure.
Drawing-related functions
void	slifis_plot::GAPI_DrawRectangle (GAPI_IMAGE *p_im, GAPI_POINT p1, GAPI_POINT p2, GAPI_COLOR col, bool is_filled)
	Draw rectangle (Cairo version)
void	slifis_plot::GAPI_DrawLine (GAPI_IMAGE *p_im, GAPI_POINT p1, GAPI_POINT p2, GAPI_COLOR col, int line_width, EN_LINE_TYPE)
	Draw line (Cairo version)
void	slifis_plot::GAPI_DrawCircle (GAPI_IMAGE *p_im, GAPI_POINT p, double rad, GAPI_COLOR col, int line_width)
	Draw circle (Cairo version)
void	slifis_plot::GAPI_FillImage (GAPI_IMAGE *im, GAPI_COLOR col)
	Fill image `im` with color `col` (Cairo version)
void	slifis_plot::GAPI_DrawText (GAPI_IMAGE p_im, std::string txt, GAPI_POINT p, GAPI_FONT , GAPI_COLOR col, EN_TEXT_ORIENTATION txt_or)
	Draws text on image (cairo version)