Forcing pushbuttons image

[ForTest]

Is it possible to change the image of a Push Button programmatically without use GEVENT (and GINPUT) ?

 

Thanks

[Joel Bodenmann]

You can change the image of a pushbutton (presuming that you use the built-in image rendering function) at any time by calling gwinSetCustomDraw() passing a pointer to a different image as the custom parameter.

However, I assume that you talk about the state of the button (the different images for the three states "enabled", "disabled" and "pressed" which are just one image file). Using a pushbutton widget without GINPUT/GEVENT doesn't make much sense and is actually impossible (it won't even compile!). Can you please be more specific?

[ForTest]

I'd like to switch between images (normal button and pressed button) when a specific button is pressed

I want to use my set of routine for manage the events, so i need to change the image of the pressed and released button by my code

A single image (normal button) is size 50x49, so i've merged the two images in a single file size 50 x 98

Is there a way to switch between the two images in a similar way that you do with your GINPUT/GEVENT mode ? (i mean programmatically)

It's clear to me the way to switch between two different images (size 50x49), but i was wondering if there was the possibility to use a single image file

 

/******************************************************************************/
/* This file has been generated by the uGFX-Studio                            */
/*                                                                            */
/* http://ugfx.org                                                            */
/******************************************************************************/

#include "colors.h"
#include "widgetstyles.h"
#include "gui.h"

// GListeners
GListener glistener;

// GHandles
GHandle ghContainerPage0;
GHandle ghARROW_UP;

// Fonts
font_t dejavu_sans_16;

// Images
gdispImage ARROW_UP_50x98;

static void createPagePage0(void)
{
	GWidgetInit wi;
	gwinWidgetClearInit(&wi);


	// create container widget: ghContainerPage0
	wi.g.show = FALSE;
	wi.g.x = 0;
	wi.g.y = 0;
	wi.g.width = 800;
	wi.g.height = 480;
	wi.g.parent = 0;
	wi.text = "Container";
	wi.customDraw = 0;
	wi.customParam = 0;
	wi.customStyle = 0;
	ghContainerPage0 = gwinContainerCreate(0, &wi, 0);

	// create button widget: ghARROW_UP
	wi.g.show = TRUE;
	wi.g.x = 350;
	wi.g.y = 200;
	wi.g.width = 50;
	wi.g.height = 49;
	wi.g.parent = ghContainerPage0;
	wi.text = "";
	wi.customDraw = gwinButtonDraw_Image;
	wi.customParam = &ARROW_UP_50x98;
	wi.customStyle = 0;
	ghARROW_UP = gwinButtonCreate(0, &wi);
}

void guiShowPage(unsigned pageIndex)
{
	// Hide all pages
	gwinHide(ghContainerPage0);

	// Show page selected page
	switch (pageIndex) {
	case 0:
		gwinShow(ghContainerPage0);
		break;

	default:
		break;
	}
}

void guiCreate(void)
{
	GWidgetInit wi;

	// Prepare fonts
	dejavu_sans_16 = gdispOpenFont("DejaVuSans16");

	// Prepare images
	gdispImageOpenFile(&ARROW_UP_50x98, "rsc/ARROW_UP_50x98.bmp");

	// GWIN settings
	gwinWidgetClearInit(&wi);
	gwinSetDefaultFont(dejavu_sans_16);
	gwinSetDefaultStyle(&white, FALSE);
	gwinSetDefaultColor(black_studio);
	gwinSetDefaultBgColor(white_studio);

	// Create all the display pages
	createPagePage0();

	// Select the default display page
	guiShowPage(0);

}

void guiEventLoop(void)
{
	GEvent* pe;

	while (1) {
		// Get an event
		pe = geventEventWait(&glistener, 0);
		switch (pe->type) {
		}

	}
}
 

 

Edited September 22, 2016 by ForTest

[ForTest]

It works! Thank you very much