xwaveview.h File Reference

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Data Structures
struct	WaveView_t

Functions
Widget_t *	add_waveview (Widget_t *parent, const char *label, int x, int y, int width, int height)
	add_waveview - add a waveview to a Widget_t
void	update_waveview (Widget_t *waveview, float *wave, int size)
void	waveview_mem_free (void *w_, void *user_data)

Function Documentation

add_waveview()

Widget_t * add_waveview	(	Widget_t *	parent,
		const char *	label,
		int	x,
		int	y,
		int	width,
		int	height
	)

add_waveview - add a waveview to a Widget_t

Parameters

*parent	- pointer to the Widget_t request the waveview
*label	- Label to show on the waveview
x,y,width,height	- the position/geometry to create the waveview

Returns

Widget_t* - pointer to the Widget_t waveview struct

Definition at line 26 of file xwaveview.c.

                                                     {
 
    Widget_t *wid = create_widget(parent->app, parent, x, y, width, height);
    wid->label = label;
    wid->flags |= HAS_MEM;
    wid->scale.gravity = CENTER;
    WaveView_t *wave_view;
    wave_view = (WaveView_t*)malloc(sizeof(WaveView_t));
    wave_view->wave = NULL;
    wave_view->size = 0;
    wid->private_struct = wave_view;
    wid->func.expose_callback = _draw_waveview;
    wid->func.mem_free_callback = waveview_mem_free;
    return wid;
}

References _draw_waveview(), Widget_t::app, CENTER, create_widget(), Func_t::expose_callback, Widget_t::flags, Widget_t::func, Resize_t::gravity, HAS_MEM, Widget_t::label, Func_t::mem_free_callback, Widget_t::private_struct, Widget_t::scale, WaveView_t::size, WaveView_t::wave, and waveview_mem_free().

update_waveview()

void update_waveview	(	Widget_t *	waveview,
		float *	wave,
		int	size
	)

Definition at line 43 of file xwaveview.c.

                                                                {
    WaveView_t *wave_view = (WaveView_t*)waveview->private_struct;
    if (size !=wave_view->size && size>1) {
        free(wave_view->wave);
        wave_view->wave = NULL;
        wave_view->size = size;
        wave_view->wave = (float*)malloc(size*sizeof(float));
    }
    if (wave_view->size>1) {
        memcpy(wave_view->wave, wave, size*sizeof(float));
        expose_widget(waveview);
    }
}

References expose_widget(), Widget_t::private_struct, WaveView_t::size, and WaveView_t::wave.

waveview_mem_free()

void waveview_mem_free	(	void *	w_,
		void *	user_data
	)

Definition at line 57 of file xwaveview.c.

                                                  {
    Widget_t *w = (Widget_t*)w_;
    WaveView_t *wave_view = (WaveView_t*)w->private_struct;
    free(wave_view->wave);
    free(wave_view);
}

References Widget_t::private_struct, and WaveView_t::wave.

Referenced by add_waveview().