dialogs.cpp

guide and some example with visualC++

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#include <tcl.h>
#include <tk.h>
#include <pthread.h>
#include <stdio.h>
#include <assert.h>
#include "dialogs.h"
#include "cvcam.h"
#include "cvvidtypes.h"
#include <X11/Xlib.h>
#include <X11/Intrinsic.h>
#include <X11/StringDefs.h>
#include <X11/Shell.h>
#include <X11/Xaw/Paned.h>
#include <X11/Xaw/Scrollbar.h>
#include <X11/Xaw/Label.h>
#include <X11/Xaw/Toggle.h>
#include <stdlib.h>
#include "highgui.h"
////////////////////////////////////////////////////////////////////////////////
extern Widget cvvTopLevelWidget;
static int select_res = 1;
static int select_format = 0;

typedef struct
{
    __u16* value;
    Widget w;
} Tracker;

typedef struct
{
    int         n;
    VideoFormat vf;
    CameraDescription descr;
    Tracker     br;
    Tracker     con;
    Tracker     col;
    Tracker     hue;
    int         min_w;
    int         min_h;
    int         mid_w;
    int         mid_h;
    int         max_w;
    int         max_h;
    Widget dialog;
    Widget paned;

    Widget label_res;
    Widget paned_res;
    Widget label_format;
    Widget paned_format;
    Widget res_min;
    Widget res_middle;
    Widget res_max;

    Widget format_24;
    Widget format_32;
    Widget format_yuv420p;

    Widget label_brightness;
    Widget label_contrast;
    Widget label_color;
    Widget label_hue;
    Widget brightness_w;
    Widget contrast_w;
    Widget color_w;
    Widget hue_w;
    Widget br_w;
    Widget con_w;
    Widget col_w;
    Widget h_w;

    Widget buttons;
    Widget b_ok;
    Widget b_apply;
    Widget b_cancel;
} VideoWidget;

typedef struct
{
    int         n;
    CameraDescription descr;
    int         enable;
    int         render;

    Widget dialog;
    Widget label;
    Widget paned;

    Widget enable_w;
    Widget render_w;

    Widget buttons;
    Widget b_ok;
    Widget b_apply;
    Widget b_cancel;
} CameraWidget;

static void updatevalues(VideoWidget *vf);

static void on_apply( Widget w, VideoWidget* data )
{
    cvcamSetProperty(data->n, "set_video_format", &data->vf);
    XtVaSetValues( w, XtNstate, False, 0 );
    updatevalues(data);
}

static void on_cancel( Widget w, VideoWidget* data )
{
    XtDestroyWidget( data->dialog );
    free( data );
}

static void on_ok( Widget w, VideoWidget* data )
{
    on_apply( w, data );
    on_cancel( w, data );
}

static void on_track( Widget w, Tracker* data, float* percent )
{
    char s[100];
    __u16 value = (__u16)(*percent * 0xFFFF);
    *(data->value) = value;
    sprintf( s, "%d", value );
    XtVaSetValues( data->w, XtNlabel, s, 0 );
}

static void set_float( Widget w, char* name, float value )
{
    Arg   args[1];

    if (sizeof(float) > sizeof(XtArgVal))
        XtSetArg(args[0], name, &value);
    else
    {
        union {
            XtArgVal xt;
            float   fp;
        } foo;
        foo.fp = value;
        XtSetArg(args[0], name, foo.xt);
    }
    XtSetValues(w,args,1);
}

static void on_24( Widget w, VideoWidget* v )
{
    int state = 1;
    XtVaGetValues( w, XtNstate, &state, 0 );
    if( !state )
        return;
    v->vf.picture.palette = VIDEO_PALETTE_RGB24;
}

static void on_32( Widget w, VideoWidget* v )
{
    int state = 1;
    XtVaGetValues( w, XtNstate, &state, 0 );
    if( !state )
        return;
    v->vf.picture.palette = VIDEO_PALETTE_RGB32;
}

static void on_yuv420p( Widget w, VideoWidget* v )
{
    int state = 1;
    XtVaGetValues( w, XtNstate, &state, 0 );
    if( !state )
        return;
    v->vf.picture.palette = VIDEO_PALETTE_YUV420P;
}

static void on_min( Widget w, VideoWidget* v )
{
    int state = 1;
    XtVaGetValues( w, XtNstate, &state, 0 );
    if( !state )
        return;
    v->vf.width = v->min_w;
    v->vf.height = v->min_h;
}

static void on_mid( Widget w, VideoWidget* v )
{
    int state = 1;
    XtVaGetValues( w, XtNstate, &state, 0 );
    if( !state )
        return;
    v->vf.width = v->mid_w;
    v->vf.height = v->mid_h;
}

static void on_max( Widget w, VideoWidget* v )
{
    int state = 1;
    XtVaGetValues( w, XtNstate, &state, 0 );
    if( !state )
        return;
    v->vf.width = v->max_w;
    v->vf.height = v->max_h;
}

static void updatevalues(VideoWidget *vf)
{
    int camera = vf->n;
    float percent;

    cvcamGetProperty(camera, "set_video_format", &vf->vf);
    if( vf->vf.width == vf->descr.minwidth )
        XtVaSetValues( vf->res_min, XtNstate, True, 0 );
    else if( vf->vf.width == vf->descr.maxwidth )
        XtVaSetValues( vf->res_max, XtNstate, True, 0 );
    else
        XtVaSetValues( vf->res_middle, XtNstate, True, 0 );

    switch( vf->vf.picture.palette )
    {
        case VIDEO_PALETTE_RGB24:
            XtVaSetValues( vf->format_24, XtNstate, True, 0 );
            break;
        case VIDEO_PALETTE_RGB32:
            XtVaSetValues( vf->format_32, XtNstate, True, 0 );
            break;
        case VIDEO_PALETTE_YUV420P:
            XtVaSetValues( vf->format_yuv420p, XtNstate, True, 0 );
            break;
        default:
            XtDestroyWidget( vf->dialog );
            free( vf );
            printf( "supported only RGB24, RGB32 & YUV420P formats\n" );
            return;
    }

    set_float( vf->br_w, XtNtopOfThumb, (float)vf->vf.picture.brightness / 0xFFFF );
    percent = (float)vf->vf.picture.brightness / 0xFFFF;
    vf->br.value = &vf->vf.picture.brightness;
    on_track(vf->br_w, &vf->br, &percent );

    set_float( vf->con_w, XtNtopOfThumb, (float)vf->vf.picture.contrast / 0xFFFF );
    percent = (float)vf->vf.picture.contrast / 0xFFFF;
    vf->con.value = &vf->vf.picture.contrast;
    on_track(vf->con_w, &vf->con, &percent );

    set_float( vf->col_w, XtNtopOfThumb, (float)vf->vf.picture.colour / 0xFFFF );
    percent = (float)vf->vf.picture.colour / 0xFFFF;
    vf->col.value = &vf->vf.picture.colour;
    on_track(vf->col_w, &vf->col, &percent );

    set_float( vf->h_w, XtNtopOfThumb, (float)vf->vf.picture.hue / 0xFFFF );
    percent = (float)vf->vf.picture.hue / 0xFFFF;
    vf->hue.value = &vf->vf.picture.hue;
    on_track(vf->h_w, &vf->hue, &percent );
}

void icvVideoVideoPPDialog(int camera)
{

    char title[100];

    VideoWidget* vf = (VideoWidget*)malloc( sizeof(*vf) );
    vf->n = camera;
    cvcamGetProperty(camera, "description", &vf->descr);

    snprintf( title, 100, "%s, %s (%s): Video format", vf->descr.device, vf->descr.DeviceDescription, vf->descr.ChannelDescription );