glcompbutton.c

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/*************************************************************************
 * Copyright (c) 2011 AT&T Intellectual Property 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors: Details at https://graphviz.org
 *************************************************************************/
 
#include <cgraph/alloc.h>
#include <glcomp/glcompbutton.h>
#include <glcomp/glcomplabel.h>
#include <glcomp/glcompimage.h>
#include <glcomp/glcompfont.h>
#include <glcomp/glutils.h>
#include <glcomp/glcompset.h>
#include <stdbool.h>
#include <stddef.h>
#include <string.h>
#include <GL/glut.h>
 
 
glCompButton *glCompButtonNew(glCompObj *par, float x, float y, float w,
                              float h, char *caption) {
    glCompButton *p = gv_alloc(sizeof(glCompButton));
    glCompInitCommon((glCompObj *) p, par, x, y);
    p->objType = glButtonObj;
    /*customize button color */
    p->common.color.R = GLCOMPSET_BUTTON_COLOR_R;
    p->common.color.G = GLCOMPSET_BUTTON_COLOR_G;
    p->common.color.B = GLCOMPSET_BUTTON_COLOR_B;
    p->common.color.A = GLCOMPSET_BUTTON_COLOR_ALPHA;
 
    p->common.borderWidth = GLCOMPSET_BUTTON_BEVEL;
 
    p->common.width = w;
    p->common.height = h;
    p->status = false; // false not pressed, true pressed
    p->groupid = 0;
    p->common.callbacks.click = NULL;
    /*set event functions */
 
    p->common.functions.draw = (glcompdrawfunc_t)glCompButtonDraw;
 
    p->common.functions.click = glCompButtonClick;
    p->common.functions.doubleclick = glCompButtonDoubleClick;
    p->common.functions.mousedown = glCompButtonMouseDown;
    p->common.functions.mousein = glCompButtonMouseIn;
    p->common.functions.mouseout = glCompButtonMouseOut;
    p->common.functions.mouseover = glCompButtonMouseOver;
    p->common.functions.mouseup = glCompButtonMouseUp;
 
    /*caption */
    p->common.font = glNewFontFromParent ((glCompObj *) p, NULL);
    p->label = glCompLabelNew((glCompObj*) p, caption);
    p->label->common.font->justify.VJustify = glFontVJustifyCenter;
    p->label->common.font->justify.HJustify = glFontHJustifyCenter;
    p->label->common.align = glAlignParent;
    /*image */
    p->image = NULL;
    return p;
}
 
int glCompButtonAddPngGlyph(glCompButton * b, char *fileName)
{
    int rv;
    /*delete if there is an existing image */
    if (b->image)
        glCompImageDelete(b->image);
    /*image on left for now */
    b->image = glCompImageNew((glCompObj *) b, 0, 0);
 
    rv = glCompImageLoadPng(b->image, fileName);
    if (rv) {
        b->image->common.anchor.leftAnchor = 1;
        b->image->common.anchor.left = 0;
 
        b->image->common.anchor.topAnchor = 1;
        b->image->common.anchor.top = 0;
 
        b->image->common.anchor.bottomAnchor = 1;
        b->image->common.anchor.bottom = 0;
 
        b->label->common.anchor.leftAnchor = 1;
        b->label->common.anchor.left = b->image->common.width;
        b->label->common.anchor.rightAnchor = 1;
        b->label->common.anchor.right = 0;
 
        b->label->common.anchor.topAnchor = 1;
        b->label->common.anchor.top = 0;
 
        b->label->common.anchor.bottomAnchor = 1;
        b->label->common.anchor.bottom = 0;
 
        b->label->common.align = glAlignNone;
    }
    return rv;
}
 
void glCompButtonHide(glCompButton * p)
{
    p->common.visible = 0;
    if (p->label)
        p->label->common.visible = 0;
    if (p->image)
        p->image->common.visible = 0;
}
 
void glCompButtonShow(glCompButton * p)
{
    p->common.visible = 1;
    if (p->label)
        p->label->common.visible = 1;
    if (p->image)
        p->image->common.visible = 1;
}
 
void glCompButtonDraw(glCompButton * p)
{
 
    glCompCommon ref;
    ref = p->common;
    glCompCalcWidget((glCompCommon *) p->common.parent, &p->common, &ref);
    if (!p->common.visible)
        return;
    /*draw panel */
    glCompDrawRectPrism(&(ref.pos), ref.width, ref.height,
                        p->common.borderWidth, 0.01f, &(ref.color),
                        !p->status);
    if (p->label)
        p->label->common.functions.draw(p->label);
    if (p->image)
        p->image->common.functions.draw(p->image);
    if (p->common.callbacks.draw)
        p->common.callbacks.draw(p);    /*user defined drawing routines are called here. */
}
 
void glCompButtonClick(glCompObj *o, float x, float y, glMouseButtonType t) {
    glCompButton *p = (glCompButton *) o;
    glCompObj *obj;
    glCompSet *s = o->common.compset;
    ((glCompButton *) o)->status=((glCompButton *) o)->refStatus ;
    if (p->groupid > 0) 
    {
        for (size_t ind = 0; ind < s->objcnt; ind++) {
            obj = s->obj[ind];
            if (obj->objType == glButtonObj && obj != o) {
                if (((glCompButton *) obj)->groupid == p->groupid)
                    ((glCompButton *) obj)->status = false;
            }
        }
        p->status = true;
    }
    else {
        if (p->groupid == -1) {
            p->status = !p->status;
        } else
            p->status = false;
    }
    if (p->common.callbacks.click)
        p->common.callbacks.click((glCompObj *) p, x, y, t);
}
 
void glCompButtonDoubleClick(glCompObj *obj, float x, float y,
                             glMouseButtonType t)
{
    /*Put your internal code here */
    if (((glCompButton *) obj)->common.callbacks.doubleclick)
        ((glCompButton *) obj)->common.callbacks.doubleclick(obj, x, y, t);
}
 
void glCompButtonMouseDown(glCompObj *obj, float x, float y,
                           glMouseButtonType t)
{
    /*Put your internal code here */
 
    
    ((glCompButton *) obj)->refStatus = ((glCompButton *) obj)->status;
    ((glCompButton *) obj)->status = true;
    if (((glCompButton *) obj)->common.callbacks.mousedown)
        ((glCompButton *) obj)->common.callbacks.mousedown(obj, x, y, t);
}
 
void glCompButtonMouseIn(glCompObj *obj, float x, float y) {
    /*Put your internal code here */
    if (((glCompButton *) obj)->common.callbacks.mousein)
        ((glCompButton *) obj)->common.callbacks.mousein(obj, x, y);
}
 
void glCompButtonMouseOut(glCompObj *obj, float x, float y) {
    /*Put your internal code here */
    if (((glCompButton *) obj)->common.callbacks.mouseout)
        ((glCompButton *) obj)->common.callbacks.mouseout(obj, x, y);
}
 
void glCompButtonMouseOver(glCompObj *obj, float x, float y) {
    /*Put your internal code here */
    if (((glCompButton *) obj)->common.callbacks.mouseover)
        ((glCompButton *) obj)->common.callbacks.mouseover(obj, x, y);
}
 
void glCompButtonMouseUp(glCompObj *obj, float x, float y, glMouseButtonType t)
{
    /*Put your internal code here */
 
    if (((glCompButton *) obj)->common.callbacks.mouseup)
        ((glCompButton *) obj)->common.callbacks.mouseup(obj, x, y, t);
}