guimenu.cpp

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/***************************************************************************
                          menu.cpp -- menu management                            
                             -------------------                                         
    created              : Fri Aug 13 22:23:19 CEST 1999
    copyright            : (C) 1999-2026 by Eric Espié, Bernhard Wymann
    email                : berniw@bluewin.ch
 
 ***************************************************************************/
 
/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

 
 
#include <stdio.h>
#include <stdlib.h>
#include <memory>
#ifdef WIN32
#include <windows.h>
#endif
#include <GL/glut.h>
 
#include <tgfclient.h>
#include "gui.h"
#include "guimenu.h"
 
void
gfMenuInit(void)
{
}

void
GfuiMenuDefaultKeysAdd(void *scr)
{
    GfuiAddKeyAction(scr, 9, "Select Next Entry", [] { gfuiSelectNext(NULL); }, tGfuiAction());
    GfuiAddKeyAction(scr, 13, "Perform Action", [] { gfuiMouseAction(2); }, tGfuiAction());
    GfuiAddSKeyAction(scr, GLUT_KEY_UP, "Select Previous Entry", [] { gfuiSelectPrev(NULL); }, tGfuiAction());
    GfuiAddSKeyAction(scr, GLUT_KEY_DOWN, "Select Next Entry", [] { gfuiSelectNext(NULL); }, tGfuiAction());
    GfuiAddSKeyAction(scr, GLUT_KEY_PAGE_UP, "Select Previous Entry", [] { gfuiSelectPrev(NULL); }, tGfuiAction());
    GfuiAddSKeyAction(scr, GLUT_KEY_PAGE_DOWN, "Select Next Entry", [] { gfuiSelectNext(NULL); }, tGfuiAction());
    GfuiAddSKeyAction(scr, GLUT_KEY_F1, "Help", [scr] { GfuiHelpScreen(scr); }, tGfuiAction());
    GfuiAddSKeyAction(scr, GLUT_KEY_F12, "Screen-Shot", [] { GfuiScreenShot(NULL); }, tGfuiAction());
    
}

void *
GfuiMenuScreenCreate(const char *title)
{
    void    *scr;
    
    scr = GfuiScreenCreate();
    GfuiTitleCreate(scr, title, strlen(title));
    
    GfuiMenuDefaultKeysAdd(scr);
    
    return scr;
}
 
static void
dispInfo(const tMnuCallbackInfo *cbinfo)
{
    tGfuiObject *button = gfuiGetObject(cbinfo->screen, cbinfo->buttonId);
 
    if (button && button->state == GFUI_DISABLE && !cbinfo->disabledTip.empty()) {
        GfuiLabelSetText(cbinfo->screen, cbinfo->labelId, cbinfo->disabledTip.c_str());
        static float disabledTipColor[4] = {1.0, 0.0, 0.0, 1.0};
        GfuiLabelSetColor(cbinfo->screen, cbinfo->labelId, disabledTipColor);
    } else {
        GfuiLabelSetText(cbinfo->screen, cbinfo->labelId, cbinfo->tip.c_str());
        GfuiLabelSetColor(cbinfo->screen, cbinfo->labelId, &(GfuiColor[GFUI_TIPCOLOR][0]));
    }
    GfuiVisibilitySet(cbinfo->screen, cbinfo->labelId, 1);
}
static void
remInfo(const tMnuCallbackInfo *cbinfo)
{
    GfuiVisibilitySet(cbinfo->screen, cbinfo->labelId, 0);
}
 

int
GfuiMenuButtonCreateActionWithDisabledTip(void *scr, const char *text, const char *tip, const char *disabledTip, const tGfuiAction &onpush)
{
    std::shared_ptr<tMnuCallbackInfo> cbinfo;
    int xpos, ypos;
    int nbItems = ((tGfuiScreen*)scr)->nbItems++;
    int bId;
    
    if (nbItems < 11) {
        xpos = 320;
        ypos = 380 - 30 * nbItems;
    } else {
        if (nbItems > 22) {
            GfTrace("Too many items in that menu !!!\n");
            return -1;
        }
        xpos = 380;
        ypos = 380 - 30 * (nbItems - 11);
    }
    
    cbinfo = std::make_shared<tMnuCallbackInfo>();
    cbinfo->screen = scr;
    cbinfo->buttonId = -1;
    cbinfo->tip = tip ? tip : "";
    cbinfo->disabledTip = disabledTip ? disabledTip : "";
    const int maxTipLen = (int)(cbinfo->tip.length() > cbinfo->disabledTip.length() ? cbinfo->tip.length() : cbinfo->disabledTip.length());
    cbinfo->labelId = GfuiTipCreate(scr, cbinfo->tip.c_str(), maxTipLen);
    
    GfuiVisibilitySet(scr, cbinfo->labelId, 0);
    
    bId = GfuiButtonCreateAction(scr,
                text,
                GFUI_FONT_LARGE,
                xpos, ypos, GFUI_BTNSZ, GFUI_ALIGN_HC_VB, 0,
                onpush,
                [cbinfo] { dispInfo(cbinfo.get()); },
                [cbinfo] { remInfo(cbinfo.get()); });
    cbinfo->buttonId = bId;
    return bId;
}
 
int
GfuiMenuButtonCreateAction(void *scr, const char *text, const char *tip, const tGfuiAction &onpush)
{
    return GfuiMenuButtonCreateActionWithDisabledTip(scr, text, tip, NULL, onpush);
}
 
int
GfuiMenuButtonCreate(void *scr, const char *text, const char *tip, void *userdata, tfuiCallback onpush)
{
    return GfuiMenuButtonCreateAction(scr, text, tip, gfuiMakeAction(userdata, onpush));
}

int
GfuiMenuBackQuitButtonCreateAction(void *scr, const char *text, const char *tip, const tGfuiAction &onpush)
{
    std::shared_ptr<tMnuCallbackInfo> cbinfo;
    int         xpos, ypos;
    int         bId;
    
    xpos = 320;
    ypos = 40;
 
    cbinfo = std::make_shared<tMnuCallbackInfo>();
    cbinfo->screen = scr;
    cbinfo->buttonId = -1;
    cbinfo->tip = tip ? tip : "";
    cbinfo->labelId = GfuiTipCreate(scr, cbinfo->tip.c_str(), (int)cbinfo->tip.length());
 
    GfuiVisibilitySet(scr, cbinfo->labelId, 0);
    
    bId = GfuiButtonCreateAction(scr,
            text,
            GFUI_FONT_LARGE,
            xpos, ypos, GFUI_BTNSZ, GFUI_ALIGN_HC_VB, 0,
            onpush,
            [cbinfo] { dispInfo(cbinfo.get()); },
            [cbinfo] { remInfo(cbinfo.get()); });
    cbinfo->buttonId = bId;
 
    GfuiAddKeyAction(scr, (unsigned char)27, tip, onpush, tGfuiAction());
 
    return bId;
}
 
int
GfuiMenuBackQuitButtonCreate(void *scr, const char *text, const char *tip, void *userdata, tfuiCallback onpush)
{
    return GfuiMenuBackQuitButtonCreateAction(scr, text, tip, gfuiMakeAction(userdata, onpush));
}