toolboxcallbacks.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 "toolboxcallbacks.h"
#include "viewport.h"
 
#include "gltemplate.h"
#include <glcomp/glutils.h>
#include "glmotion.h"
#include <stdint.h>
 
void btnToolZoomOut_clicked(GtkWidget *widget, void *user_data) {
    (void)widget;
    (void)user_data;
 
    glmotion_zoom_inc(0);
}
 
void btnToolZoomFit_clicked(GtkWidget *widget, void *user_data) {
    (void)widget;
    (void)user_data;
 
    float z = view->active_camera != SIZE_MAX
            ? view->cameras[view->active_camera]->r
            : -view->zoom;
 
    float GDX = view->bdxRight / z - view->bdxLeft / z;
    float SDX = view->clipX2 - view->clipX1;
    float GDY = view->bdyTop / z - view->bdyBottom / z;
    float SDY = view->clipY2 - view->clipY1;
 
    if (SDX / GDX <= SDY / GDY) {
        if (view->active_camera != SIZE_MAX) {
            view->cameras[view->active_camera]->r /= SDX / GDX;
        } else {
            view->zoom /= SDX / GDX;
        }
    } else {
        if (view->active_camera != SIZE_MAX) {
            view->cameras[view->active_camera]->r /= SDY / GDY;
        } else {
            view->zoom /= SDY / GDY;
        }
 
    }
    btnToolFit_clicked(NULL, NULL);
}
 
void btnToolFit_clicked(GtkWidget *widget, void *user_data) {
    (void)widget;
    (void)user_data;
 
    float scx, scy, gcx, gcy, z;
 
    (view->active_camera != SIZE_MAX)
        ? (z = view->cameras[view->active_camera]->r) : (z =
                                                         view->zoom * -1);
 
    gcx = view->bdxLeft / z + (view->bdxRight / z - view->bdxLeft / z) / 2.0f;
    scx = view->clipX1 + (view->clipX2 - view->clipX1) / 2.0f;
    gcy = view->bdyBottom / z + (view->bdyTop / z - view->bdyBottom / z) / 2.0f;
    scy = view->clipY1 + (view->clipY2 - view->clipY1) / 2.0f;
 
    if (view->active_camera != SIZE_MAX) {
        view->cameras[view->active_camera]->targetx += (gcx - scx);
        view->cameras[view->active_camera]->targety += (gcx - scy);
    } else {
        view->panx += gcx - scx;
        view->pany += gcy - scy;
    }
    view->Topview->fitin_zoom = view->zoom;
 
    glexpose();
}
 
void on_btnActivateGraph_clicked(GtkWidget *widget, void *user_data) {
    (void)widget;
    (void)user_data;
 
    int graphId;
    graphId = gtk_combo_box_get_active(view->graphComboBox);
    /* fprintf (stderr, "switch to graph %d\n",graphId); */
    switch_graph(graphId);
}