#include "BitmapComboBox.hpp"

#include <cstddef>
#include <vector>
#include <string>
#include <boost/algorithm/string.hpp>

#include <wx/sizer.h>
#include <wx/stattext.h>
#include <wx/textctrl.h>
#include <wx/button.h>
#include <wx/statbox.h>
#include <wx/colordlg.h>
#include <wx/wupdlock.h>
#include <wx/menu.h>
#include <wx/odcombo.h>
#include <wx/listbook.h>
#include <wx/window.h>

#ifdef _WIN32
#include <wx/msw/dcclient.h>
#include <wx/msw/private.h>
#ifdef _MSW_DARK_MODE
#include <wx/msw/dark_mode.h>
#endif //_MSW_DARK_MODE
#endif

#include "libslic3r/libslic3r.h"
#include "libslic3r/PrintConfig.hpp"
#include "libslic3r/PresetBundle.hpp"

#include "GUI.hpp"
#include "GUI_App.hpp"
#include "Plater.hpp"
#include "MainFrame.hpp"
#include "format.hpp"

// A workaround for a set of issues related to text fitting into gtk widgets:
// See e.g.: https://github.com/prusa3d/PrusaSlicer/issues/4584
#if defined(__WXGTK20__) || defined(__WXGTK3__)
    #include <glib-2.0/glib-object.h>
    #include <pango-1.0/pango/pango-layout.h>
    #include <gtk/gtk.h>
#endif

using Slic3r::GUI::format_wxstr;

#define BORDER_W 10

// ---------------------------------
// ***  BitmapComboBox  ***
// ---------------------------------

namespace Slic3r {
namespace GUI {

/* For PresetComboBox we use bitmaps that are created from images that are already scaled appropriately for Retina
 * (Contrary to the intuition, the `scale` argument for Bitmap's constructor doesn't mean
 * "please scale this to such and such" but rather
 * "the wxImage is already sized for backing scale such and such". )
 * Unfortunately, the constructor changes the size of wxBitmap too.
 * Thus We need to use unscaled size value for bitmaps that we use
 * to avoid scaled size of control items.
 * For this purpose control drawing methods and
 * control size calculation methods (virtual) are overridden.
 **/

BitmapComboBox::BitmapComboBox(wxWindow* parent,
                                wxWindowID id/* = wxID_ANY*/,
                                const wxString& value/* = wxEmptyString*/,
                                const wxPoint& pos/* = wxDefaultPosition*/,
                                const wxSize& size/* = wxDefaultSize*/,
                                int n/* = 0*/,
                                const wxString choices[]/* = NULL*/,
                                    long style/* = 0*/) :
    wxBitmapComboBox(parent, id, value, pos, size, n, choices, style)
{
    SetFont(Slic3r::GUI::wxGetApp().normal_font());
#ifdef _WIN32
    // Workaround for ignoring CBN_EDITCHANGE events, which are processed after the content of the combo box changes, so that
    // the index of the item inside CBN_EDITCHANGE may no more be valid.
    EnableTextChangedEvents(false);
    wxGetApp().UpdateDarkUI(this);
    if (!HasFlag(wxCB_READONLY))
        wxTextEntry::SetMargins(0,0);
#endif /* _WIN32 */
}

BitmapComboBox::~BitmapComboBox()
{
}

#ifdef __APPLE__
bool BitmapComboBox::OnAddBitmap(const wxBitmap& bitmap)
{
    if (bitmap.IsOk())
    {
        // we should use scaled! size values of bitmap
        int width = (int)bitmap.GetScaledWidth();
        int height = (int)bitmap.GetScaledHeight();

        if (m_usedImgSize.x < 0)
        {
            // If size not yet determined, get it from this image.
            m_usedImgSize.x = width;
            m_usedImgSize.y = height;

            // Adjust control size to vertically fit the bitmap
            wxWindow* ctrl = GetControl();
            ctrl->InvalidateBestSize();
            wxSize newSz = ctrl->GetBestSize();
            wxSize sz = ctrl->GetSize();
            if (newSz.y > sz.y)
                ctrl->SetSize(sz.x, newSz.y);
            else
                DetermineIndent();
        }

        wxCHECK_MSG(width == m_usedImgSize.x && height == m_usedImgSize.y,
            false,
            "you can only add images of same size");

        return true;
    }

    return false;
}

void BitmapComboBox::OnDrawItem(wxDC& dc,
    const wxRect& rect,
    int item,
    int flags) const
{
    const wxBitmap& bmp = *(static_cast<wxBitmap*>(m_bitmaps[item]));
    if (bmp.IsOk())
    {
        // we should use scaled! size values of bitmap
        wxCoord w = bmp.GetScaledWidth();
        wxCoord h = bmp.GetScaledHeight();

        const int imgSpacingLeft = 4;

        // Draw the image centered
        dc.DrawBitmap(bmp,
            rect.x + (m_usedImgSize.x - w) / 2 + imgSpacingLeft,
            rect.y + (rect.height - h) / 2,
            true);
    }

    wxString text = GetString(item);
    if (!text.empty())
        dc.DrawText(text,
            rect.x + m_imgAreaWidth + 1,
            rect.y + (rect.height - dc.GetCharHeight()) / 2);
}
#endif


#ifdef _WIN32

int BitmapComboBox::Append(const wxString& item)
{
    // Workaround for a correct rendering of the control without Bitmap (under MSW):
    //1. We should create small Bitmap to fill Bitmaps RefData,
    //   ! in this case wxBitmap.IsOK() return true.
    //2. But then set width to 0 value for no using of bitmap left and right spacing
    //3. Set this empty bitmap to the at list one item and BitmapCombobox will be recreated correct

    wxBitmap bitmap(1, int(1.6 * wxGetApp().em_unit() + 1));
    bitmap.SetWidth(0);

    OnAddBitmap(bitmap);
    const int n = wxComboBox::Append(item);
    if (n != wxNOT_FOUND)
        DoSetItemBitmap(n, bitmap);
    return n;
}

enum OwnerDrawnComboBoxPaintingFlags
{
    ODCB_PAINTING_DISABLED = 0x0004,
};

bool BitmapComboBox::MSWOnDraw(WXDRAWITEMSTRUCT* item)
{
    LPDRAWITEMSTRUCT lpDrawItem = (LPDRAWITEMSTRUCT)item;
    int pos = lpDrawItem->itemID;

    // Draw default for item -1, which means 'focus rect only'
    if (pos == -1)
        return false;

    int flags = 0;
    if (lpDrawItem->itemState & ODS_COMBOBOXEDIT)
        flags |= wxODCB_PAINTING_CONTROL;
    if (lpDrawItem->itemState & ODS_SELECTED)
        flags |= wxODCB_PAINTING_SELECTED;
    if (lpDrawItem->itemState & ODS_DISABLED)
        flags |= ODCB_PAINTING_DISABLED;

    wxPaintDCEx dc(this, lpDrawItem->hDC);
    wxRect rect = wxRectFromRECT(lpDrawItem->rcItem);

    DrawBackground_(dc, rect, pos, flags);

    wxString text;

    if (flags & wxODCB_PAINTING_CONTROL)
    {
        // Don't draw anything in the editable selection field.
        //if (!HasFlag(wxCB_READONLY))
        //    return true;

        pos = GetSelection();
        // Skip drawing if there is nothing selected.
        if (pos < 0)
            return true;

        text = GetValue();
    }
    else
    {
        text = GetString(pos);
    }

    wxBitmapComboBoxBase::DrawItem(dc, rect, pos, text, flags);

    return true;
}

void BitmapComboBox::DrawBackground_(wxDC& dc, const wxRect& rect, int WXUNUSED(item), int flags) const
{
    if (flags & wxODCB_PAINTING_SELECTED)
    {
        const int vSizeDec = 0;  // Vertical size reduction of selection rectangle edges

        dc.SetTextForeground(wxGetApp().get_label_highlight_clr());

        wxColour selCol = wxGetApp().get_highlight_default_clr();
        dc.SetPen(selCol);
        dc.SetBrush(selCol);
        dc.DrawRectangle(rect.x,
            rect.y + vSizeDec,
            rect.width,
            rect.height - (vSizeDec * 2));
    }
    else
    {
        dc.SetTextForeground(flags & ODCB_PAINTING_DISABLED ? wxColour(108,108,108) : wxGetApp().get_label_clr_default());

        wxColour selCol = flags & ODCB_PAINTING_DISABLED ? 
#ifdef _MSW_DAEK_MODE
            wxRGBToColour(NppDarkMode::InvertLightnessSofter(NppDarkMode::GetBackgroundColor())) : 
#else
            wxGetApp().get_highlight_default_clr() :
#endif
            wxGetApp().get_window_default_clr();
        dc.SetPen(selCol);
        dc.SetBrush(selCol);
        dc.DrawRectangle(rect);
    }
}

void BitmapComboBox::Rescale()
{
    // Next workaround: To correct scaling of a BitmapCombobox
    // we need to refill control with new bitmaps
    const wxString selection = this->GetValue();
    std::vector<wxString> items;
    for (size_t i = 0; i < GetCount(); i++)
        items.push_back(GetString(i));

    this->Clear();
    for (const wxString& item : items)
        Append(item);
    this->SetValue(selection);
}
#endif

}}