how to disable gui auto draw to draw manually in draw() to set order

[moebiussurfing]

I am using an ofxGuiGraphics into a container to draw the background of my app. I tried to send back the panel with groupBackground->moveToBack(); but when I draw other things into ofApp::draw(), all goes into background, gui is in front.

theres some way to disable auto draw to be able to draw in front all gui? something like:

setup gui_background.disaleAutoDraw();

draw gui_background.draw(); myCubes.draw();

[frauzufall]

Hi, yes, the idea was to have the GUI on top of everything and the ability to hide it with gui.getVisible().set(false). But you can do what you asked for - add this to the end of your setup method:

ofRemoveListener(ofEvents().draw, gui.getDocument(), &DOM::Document::draw, OF_EVENT_ORDER_AFTER_APP);

.. and then draw it like this:

void ofApp::draw(ofEventArgs &e) {
    gui.getDocument()->draw(e);
}

Hope it helps :) Maybe I should wrap this somehow because it is a bit ugly... I like your suggested methods.

[brunovianna]

I have a similar need but this fix didn't work. I use the gui so that the user chooses from a list of videos. After pressing the button, the gui should disappear and the video should start. However, even if I use the tip above there is still a black background being drawn on top of the video. The only way I can draw is by not creating the gui object. Should I somehow delete the gui object altogether to make it go away?

[moebiussurfing]

I generally use gui.getVisible().set(false). To hide all gui. Maybe you can move the panel outside the window..

[brunovianna]

Thanks for the suggestion, but I had already tried gui.getVisible().set(false) without success. Also setting the panel position away from the screen didn't help.

It seems like the gui draws some kid of black blackground with a bit of transparency. I can almost see the video playing behind it...

[moebiussurfing]

hey @brunovianna, look around this code to see if it helps in some way: I am using ofxGuiExtende also over a video player and it's hiding fine when I want. You need to hide/show not in draw() loop, just with a trigger like key trigger below. Also you can play clearing or setting the background in draw(), and maybe to play too with depth/alpha/translates too...

//--
//main.cpp

#include "ofMain.h"
#include "ofApp.h"
//========================================================================
int main( ){
    ofSetupOpenGL(1280, 720,OF_WINDOW);
	ofRunApp(new ofApp());
}
//--


//---
//ofApp.h
#pragma once
#include "ofMain.h"
#include "ofxGuiExtended.h"
#include "ofxHapPlayer.h"

class ofApp : public ofBaseApp{
public:
//...
    ofxGui gui;
    ofxGuiPanel *panel;
    ofParameter<int> timePeriod_ms;
    ofParameter<int> bpm;
    ofParameter<float> start;
    ofParameter<float> finish;
    ofParameter<bool> MARK_IN;
    ofParameterGroup params;
//--


//--
//ofApp.cpp

//--------------------------------------------------------------
void ofApp::setup(){
//define params (forget names)
    ENABLE_glitch1.set("GLITCH 1", false);
    ENABLE_skiper.set("ENABLE AUTO SKIPER", false);
    TRIG_skiper.set("TRIG SKIP", false);
    ENABLE_LOOP.set("ENABLE_LOOP", false);
    bpm.set("BPM", 120, 10, 300);
    beatNum.set("beatNum", 0, 0, 4);
//...
//add params to group params
    params.add(ENABLE_skiper);
    params.add(timePeriod_ms);
    params.add(TRIG_skiper);
//...
// create gui panel
    panel = gui.addPanel(params);
//...

//--------------------------------------------------------------
void ofApp::draw(){
	/// you can test with this
	/// to force if video player make some of
	/// this enablers inside
    //ofEnableAlphaBlenging();
    //ofDisableAlphaBlenging();

	/// you can test with this
	/// to force if video player make some of
	/// this enablers inside
    ofPushMatrix();
	ofPushStyle();	
    
    //-

    // all 3D
    /// you can test with this
	/// to force if video player make some of
	/// this enablers inside
	ofEnableDepthTest();

    //..all drawing

	ofPopStyle();	
    ofPopMatrix();

	//-

	drawVideo();
	
	//-

    // all 2D
    /// you can test with this
	/// to force if video player make some of
	/// this enablers inside

    ofDisableDepthTest();

    //-

    // HELP INFO:

    if (SHOW_gui)
    {
        string info = "ofxPostGlitch\n";
        info += "1 - 0 : Apply glitch effects.\n";
        info += "q - u : Apply color remap effects.\n";
        
        ofPushMatrix();
		ofPushStyle();
        ofTranslate(pos_x, pos_y);
        if (bShowHelp){
            ofSetColor(0, 200);
            ofDrawRectangle(25, 17, 320, 60);
            ofSetColor(255);
            ofDrawBitmapString(info, 30,30);
        }
        ofPopStyle();
        ofPopMatrix();
    }
}

//--------------------------------------------------------------
void ofApp::drawVideo()
{
    ofClear(0, 0, 0, 255);
    //clear screen, same that ofBackground(128);
    
    if (player.isLoaded())
    {
        // Draw the video frame
        ofSetColor(255, 255, 255);
        ofRectangle videoRect(0, 0, player.getWidth(), player.getHeight());
        videoRect.scaleTo(ofGetWindowRect());

        player.draw(videoRect.x, videoRect.y, videoRect.width, videoRect.height);
    }

}

//--------------------------------------------------------------
void ofApp::keyPressed(int key)
{
   //..
    // show gui

    if (key == 'g')
    {
        SHOW_gui = !SHOW_gui;

        gui.getVisible().set(SHOW_gui);
    }
    //...

[moebiussurfing]

Also you can change the background color of the panel to maximum alpha ..

[brunovianna]

Thanks @moebiussurfing . I have found the bug - I was setting ofSetColor to draw some text when the gui was visible. For some reason, even after I stopped using the gui, this was messing up with the drawing of the video. I tested using ofSetColor(255,20,20) and got a red tainted video. I don't if it is worth looking into the issue.