Category : Files from Magazines
Archive : DFPP01.ZIP
Filename : MENUBAR.CPP
Output of file : MENUBAR.CPP contained in archive : DFPP01.ZIP
#include
#include "desktop.h"
#include "menubar.h"
#include "menusel.h"
MenuBarItem::MenuBarItem(char *Title, MenuSelection **Ms,
void (*MenuPrep)())
{
title = new String(Title);
ms = Ms;
menuprep = MenuPrep;
popdown = NULL;
terminator = False;
}
MenuBarItem::MenuBarItem(MenuTerminator)
{
title = NULL;
terminator = True;
ms = NULL;
menuprep = NULL;
popdown = NULL;
}
MenuBar::MenuBar( MenuBarItem *MenuItems, DFWindow *par) :
TextBox( par->ClientLeft(), par->ClientTop()-1,
1, par->ClientWidth(), par)
{
windowtype = MenubarWindow;
menuitems = MenuItems;
SetAttribute(NOCLIP);
SetColors();
selection = -1;
ispoppeddown = False;
MenuBarItem *menu = menuitems;
menucount = 0;
oldfocus = NULL;
int off = 2;
SetTextLength(desktop.screen().Width()*2);
while (!menu->terminator) {
int len = menu->title->Strlen()-1;
menu->x1 = off;
menu->x2 = off+len-1;
off += len+2;
String ttl(" ");
ttl += *(menu->title);
AddText(ttl);
int n = text->Strlen()-1;
(*text)[n] = '\0';
menu->popdown = new PopDown(this, menu->ms);
menu++;
menucount++;
}
}
MenuBar::~MenuBar()
{
// destructor code
MenuBarItem *menu = menuitems;
while (!menu->terminator) {
delete menu->popdown;
menu++;
}
TextBox::CloseWindow();
}
// -------- set the fg/bg colors for the window
void MenuBar::SetColors()
{
colors.fg = BLACK;
colors.bg = LIGHTGRAY;
colors.sfg = BLACK;
colors.sbg = CYAN;
colors.ffg = BLACK;
colors.fbg = LIGHTGRAY;
colors.hfg = BLACK;
colors.hbg = LIGHTGRAY;
shortcutfg = RED;
}
Bool MenuBar::SetFocus()
{
if (oldfocus == NULL)
if (desktop.InFocus() != NULL)
if (desktop.InFocus()->State() != ISCLOSING)
oldfocus = desktop.InFocus();
return TextBox::SetFocus();
}
void MenuBar::ResetFocus()
{
if (!ispoppeddown) {
SetSelection(-1);
oldfocus = NULL;
}
TextBox::ResetFocus();
}
void MenuBar::Paint()
{
WriteShortcutLine(0, colors.fg, colors.bg);
if (selection != -1) {
int x = menuitems[selection].x1;
int len = menuitems[selection].x2-x+2;
String sel = text->mid(len, x+selection);
DisplayShortcutField(sel, x, 0, colors.sfg, colors.sbg);
}
}
void MenuBar::LeftButton(int mx, int)
{
mx -= Left();
MenuBarItem *menu = menuitems;
int sel = 0;
while (!menu->terminator) {
if (mx >= menu->x1 && mx <= menu->x2) {
if (selection != sel || !ispoppeddown) {
if (ispoppeddown) {
PopDown *pd = menuitems[selection].popdown;
if (pd->isOpen())
pd->CloseMenu(False);
}
Select(sel);
}
return;
}
sel++;
menu++;
}
if (selection == -1)
SetSelection(0);
}
void MenuBar::SetSelection(int sel)
{
selection = sel;
Paint();
}
void MenuBar::Select(int sel) {
selection = sel;
Select();
}
void MenuBar::Select()
{
Paint();
ispoppeddown = True;
MenuBarItem &mb = *(menuitems+selection);
int lf = Left() + mb.x1;
int tp = Top()+1;
if (mb.menuprep != NULL)
(*mb.menuprep)();
mb.popdown->OpenMenu(lf, tp);
}
Bool MenuBar::AcceleratorKey(int key)
{
MenuBarItem *menu = menuitems;
while (!menu->terminator) {
PopDown *pd = menu->popdown;
if (pd->AcceleratorKey(key))
return True;
menu++;
}
return False;
}
Bool MenuBar::ShortCutKey(int key)
{
int altkey = desktop.keyboard().AltConvert(key);
MenuBarItem *menu = menuitems;
int sel = 0;
while (!menu->terminator) {
int off = menu->title->FindChar(SHORTCUTCHAR);
if (off != -1) {
String &cp = *(menu->title);
int c = cp[off+1];
if (tolower(c) == altkey) {
SetFocus();
Select(sel);
return True;
}
}
sel++;
menu++;
}
return False;
}
void MenuBar::Keyboard(int key)
{
if (AcceleratorKey(key))
return;
if (!ispoppeddown && ShortCutKey(key))
return;
switch (key) {
case F10:
if (ispoppeddown)
break;
if (this != desktop.InFocus()) {
if (selection == -1)
selection = 0;
SetFocus();
break;
}
// ------ fall through
case ESC:
ispoppeddown = False;
SetSelection(-1);
if (oldfocus != NULL)
oldfocus->SetFocus();
else
parent->SetFocus();
break;
case FWD:
selection++;
if (selection == menucount)
selection = 0;
if (ispoppeddown)
Select();
else
Paint();
break;
case BS:
if (selection == 0)
selection = menucount;
--selection;
if (ispoppeddown)
Select();
else
Paint();
break;
case '\r':
if (selection != -1)
Select();
break;
case ALT_F6:
TextBox::Keyboard(key);
break;
default:
break;
}
}
void MenuBar::ParentSized(int xdif, int)
{
Size(Right()+xdif, Bottom());
}
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