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// *****************************************************************************
// * This file is part of the FreeFileSync project. It is distributed under *
// * GNU General Public License: http://www.gnu.org/licenses/gpl-3.0 *
// * Copyright (C) Zenju (zenju AT freefilesync DOT org) - All Rights Reserved *
// *****************************************************************************
#ifndef STD_BUTTON_LAYOUT_H_183470321478317214
#define STD_BUTTON_LAYOUT_H_183470321478317214
#include <algorithm>
#include <wx/sizer.h>
#include <wx/button.h>
namespace zen
{
struct StdButtons
{
StdButtons& setAffirmative (wxButton* btn) { btnYes = btn; return *this; }
StdButtons& setNegative (wxButton* btn) { btnNo = btn; return *this; }
StdButtons& setCancel (wxButton* btn) { btnCancel = btn; return *this; }
wxButton* btnYes = nullptr;
wxButton* btnNo = nullptr;
wxButton* btnCancel = nullptr;
};
void setStandardButtonLayout(wxBoxSizer& sizer, const StdButtons& buttons = StdButtons());
//sizer width will change! => call wxWindow::Fit and wxWindow::Layout
//--------------- impelementation -------------------------------------------
inline
void setStandardButtonLayout(wxBoxSizer& sizer, const StdButtons& buttons)
{
assert(sizer.GetOrientation() == wxHORIZONTAL);
StdButtons buttonsTmp = buttons;
auto detach = [&](wxButton*& btn)
{
if (btn)
{
assert(btn->GetContainingSizer() == &sizer);
if (btn->IsShown())
{
bool rv = sizer.Detach(btn);
assert(rv);
if (!rv)
btn = nullptr;
}
else
btn = nullptr;
}
};
detach(buttonsTmp.btnYes);
detach(buttonsTmp.btnNo);
detach(buttonsTmp.btnCancel);
#if defined ZEN_WIN
//Windows User Experience Interaction Guidelines: https://msdn.microsoft.com/en-us/library/windows/desktop/aa511453#sizing
const int spaceH = 6; //OK
const int spaceRimH = 10; //OK
const int spaceRimV = 8; //compromise; consider additional top row from static line; exact values: top 8, bottom 9
#elif defined ZEN_LINUX
//GNOME Human Interface Guidelines: https://developer.gnome.org/hig-book/3.2/hig-book.html#alert-spacing
const int spaceH = 6; //OK
const int spaceRimH = 12; //OK
const int spaceRimV = 12; //OK
#elif defined ZEN_MAC
//OS X Human Interface Guidelines: http://developer.apple.com/library/mac/#documentation/UserExperience/Conceptual/AppleHIGuidelines/Windows/Windows.html
const int spaceH = 14; //OK
const int spaceRimH = 24; //OK
const int spaceRimV = 14; //OK
#endif
bool settingFirstButton = true;
auto attach = [&](wxButton* btn)
{
if (btn)
{
assert(btn->GetMinSize().GetHeight() == -1); //let OS or this routine do the sizing! note: OS X does not allow changing the (visible!) button height!
#if defined ZEN_WIN || defined ZEN_LINUX
const int defaultHeight = wxButton::GetDefaultSize().GetHeight(); //buffered by wxWidgets
btn->SetMinSize(wxSize(-1, std::max(defaultHeight, 30))); //default button height is much too small => increase!
#endif
if (settingFirstButton)
settingFirstButton = false;
else
sizer.Add(spaceH, 0);
sizer.Add(btn, 0, wxTOP | wxBOTTOM | wxALIGN_CENTER_VERTICAL, spaceRimV);
}
};
//set border on left considering existing items
if (sizer.GetChildren().GetCount() > 0) //for yet another retarded reason wxWidgets will have wxSizer::GetItem(0) cause an assert rather than just return nullptr as documented
if (wxSizerItem* item = sizer.GetItem(static_cast<size_t>(0)))
{
assert(item->GetBorder() <= spaceRimV); //pragmatic check: other controls in the sizer should not have a larger border
int flag = item->GetFlag();
if (flag & wxLEFT)
{
flag &= ~wxLEFT;
item->SetFlag(flag);
}
sizer.Insert(static_cast<size_t>(0), spaceRimH, 0);
}
sizer.Add(spaceRimH, 0);
#if defined ZEN_WIN
attach(buttonsTmp.btnYes);
attach(buttonsTmp.btnNo);
attach(buttonsTmp.btnCancel);
#elif defined ZEN_LINUX
attach(buttonsTmp.btnNo);
attach(buttonsTmp.btnCancel);
attach(buttonsTmp.btnYes);
#elif defined ZEN_MAC
if (buttonsTmp.btnNo)
{
attach(buttonsTmp.btnNo);
sizer.Add(83 - spaceH, 0); //OS X Human Interface Guidelines: "position it at least 24 pixels away from the “safe” buttons" -> however 83 is used in practice!
}
attach(buttonsTmp.btnCancel);
attach(buttonsTmp.btnYes);
#endif
sizer.Add(spaceRimH, 0);
assert(buttonsTmp.btnCancel || buttonsTmp.btnYes); //OS X: there should be at least one button following the gap after the "dangerous" no-button
}
}
#endif //STD_BUTTON_LAYOUT_H_183470321478317214
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