/*  Starshatter OpenSource Distribution
    Copyright (c) 1997-2004, Destroyer Studios LLC.
    All Rights Reserved.

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice,
      this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice,
      this list of conditions and the following disclaimer in the documentation
      and/or other materials provided with the distribution.
    * Neither the name "Destroyer Studios" nor the names of its contributors
      may be used to endorse or promote products derived from this software
      without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
    POSSIBILITY OF SUCH DAMAGE.

    SUBSYSTEM:    nGenEx.lib
    FILE:         Button.cpp
    AUTHOR:       John DiCamillo


    OVERVIEW
    ========
    Button class
*/

#include "MemDebug.h"
#include "Button.h"
#include "Video.h"
#include "Bitmap.h"
#include "Font.h"
#include "Sound.h"
#include "DataLoader.h"

// +--------------------------------------------------------------------+

static Sound* button_sound       = 0;
static Sound* click_sound        = 0;
static Sound* swish_sound        = 0;
static Sound* chirp_sound        = 0;
static Sound* accept_sound       = 0;
static Sound* reject_sound       = 0;
static Sound* confirm_sound      = 0;
static Sound* list_select_sound  = 0;
static Sound* list_scroll_sound  = 0;
static Sound* list_drop_sound    = 0;
static Sound* combo_open_sound   = 0;
static Sound* combo_close_sound  = 0;
static Sound* combo_hilite_sound = 0;
static Sound* combo_select_sound = 0;
static Sound* menu_open_sound    = 0;
static Sound* menu_close_sound   = 0;
static Sound* menu_select_sound  = 0;
static Sound* menu_hilite_sound  = 0;

static int    gui_volume   = 0;

// +--------------------------------------------------------------------+

Button::Button(Screen* s, int ax, int ay, int aw, int ah, DWORD aid)
    : ActiveWindow(s, ax, ay, aw, ah, aid)
{
    animated       = true;
    bevel_width    = 5;
    border         = false;
    button_state   = 0;
    drop_shadow    = false;
    sticky         = false;
    picture_loc    = 1;
    captured       = false;
    pre_state      = 0;
    text_align     = DT_CENTER;

    standard_image    = 0;
    activated_image   = 0;
    transition_image  = 0;

    char buf[32];
    sprintf_s(buf, "Button %d", id); //-V576
    desc = buf;
}

Button::Button(ActiveWindow* p, int ax, int ay, int aw, int ah, DWORD aid)
    : ActiveWindow(p->GetScreen(), ax, ay, aw, ah, aid, 0, p)
{
    animated       = true;
    bevel_width    = 5;
    border         = false;
    button_state   = 0;
    drop_shadow    = false;
    sticky         = false;
    picture_loc    = 1;
    captured       = false;
    pre_state      = 0;
    text_align     = DT_CENTER;

    standard_image    = 0;
    activated_image   = 0;
    transition_image  = 0;

    char buf[32];
    sprintf_s(buf, "Button %d", id); //-V576
    desc = buf;
}

// +--------------------------------------------------------------------+

Button::~Button()
{
}

// +--------------------------------------------------------------------+

static void LoadInterfaceSound(DataLoader* loader, const char* wave, Sound*& s)
{
    loader->LoadSound(wave, s, 0, true);   // optional sound effect

    if (s)
    s->SetFlags(s->GetFlags() | Sound::INTERFACE);
}

void
Button::Initialize()
{
    DataLoader* loader = DataLoader::GetLoader();
    loader->SetDataPath("Sounds/");

    LoadInterfaceSound(loader, "button.wav",        button_sound);
    LoadInterfaceSound(loader, "click.wav",         click_sound);
    LoadInterfaceSound(loader, "swish.wav",         swish_sound);
    LoadInterfaceSound(loader, "chirp.wav",         chirp_sound);
    LoadInterfaceSound(loader, "accept.wav",        accept_sound);
    LoadInterfaceSound(loader, "reject.wav",        reject_sound);
    LoadInterfaceSound(loader, "confirm.wav",       confirm_sound);
    LoadInterfaceSound(loader, "list_select.wav",   list_select_sound);
    LoadInterfaceSound(loader, "list_scroll.wav",   list_scroll_sound);
    LoadInterfaceSound(loader, "list_drop.wav",     list_drop_sound);
    LoadInterfaceSound(loader, "combo_open.wav",    combo_open_sound);
    LoadInterfaceSound(loader, "combo_close.wav",   combo_close_sound);
    LoadInterfaceSound(loader, "combo_hilite.wav",  combo_hilite_sound);
    LoadInterfaceSound(loader, "combo_select.wav",  combo_select_sound);
    LoadInterfaceSound(loader, "menu_open.wav",     menu_open_sound);
    LoadInterfaceSound(loader, "menu_close.wav",    menu_close_sound);
    LoadInterfaceSound(loader, "menu_select.wav",   menu_select_sound);
    LoadInterfaceSound(loader, "menu_hilite.wav",   menu_hilite_sound);

    loader->SetDataPath(0);
}

// +--------------------------------------------------------------------+

void
Button::Close()
{
    delete button_sound;
    delete click_sound;
    delete swish_sound;
    delete chirp_sound;
    delete accept_sound;
    delete reject_sound;
    delete confirm_sound;
    delete list_select_sound;
    delete list_scroll_sound;
    delete list_drop_sound;
    delete combo_open_sound;
    delete combo_close_sound;
    delete combo_hilite_sound;
    delete combo_select_sound;
    delete menu_open_sound;
    delete menu_close_sound;
    delete menu_select_sound;
    delete menu_hilite_sound;
}

// +--------------------------------------------------------------------+

void
Button::Draw()
{
    if (!IsShown()) return;

    int x = 0;
    int y = 0;
    int w = rect.w;
    int h = rect.h;
    int img_w = picture.Width();
    int img_h = picture.Height();

    float old_alpha = alpha;

    if (!enabled)
    SetAlpha(0.35);

    Rect btn_rect(x,y,w,h);

    if (!transparent) {
        if (standard_image) {
            if (!enabled) {
                texture = standard_image;
            }

            else {
                switch (button_state) {
                case -1:
                    texture = activated_image;
                    break;

                default:
                case 0:
                    texture = standard_image;
                    break;

                case 1:
                    if (sticky)
                    texture = activated_image;
                    else
                    texture = transition_image;
                    break;

                case 2:
                    texture = transition_image;
                    break;
                }
            }

            if (!texture)
            texture = standard_image;

            DrawTextureGrid();
        }

        else {
            FillRect(0, 0, w, h, ShadeColor(back_color, 1.0));
            DrawStyleRect(0, 0, w, h, style);
        }
    }

    // draw the picture (if any)
    if (picture.Width()) {
        Rect irect = CalcPictureRect();
        DrawImage(&picture, irect);
    }

    // draw text here:
    if (font && text.length()) {
        Rect label_rect = CalcLabelRect(img_w,img_h);
        int  vert_space = label_rect.h;
        int  horz_space = label_rect.w;
        int  align      = DT_WORDBREAK | text_align;

        DrawText(text.data(), 0, label_rect, DT_CALCRECT | align);
        vert_space = (vert_space - label_rect.h)/2;
        
        label_rect.w = horz_space;

        if (vert_space > 0)
        label_rect.y += vert_space;

        if (animated && button_state > 0) {
            label_rect.x += button_state;
            label_rect.y += button_state;
        }

        if (drop_shadow) {
            label_rect.x++;
            label_rect.y++;
            
            font->SetColor(back_color);
            DrawText(text.data(), text.length(), label_rect, align);
            
            label_rect.x--;
            label_rect.y--;
        }
        
        font->SetColor(fore_color);
        DrawText(text.data(), text.length(), label_rect, align);
    }

    if (!enabled)
    SetAlpha(old_alpha);
}

Rect Button::CalcLabelRect(int img_w, int img_h)
{
    // fit the text in the bevel:
    Rect label_rect;
    label_rect.x = 0;
    label_rect.y = 0;
    label_rect.w = rect.w;
    label_rect.h = rect.h;

    if (text_align == DT_LEFT)
    label_rect.Deflate(bevel_width + 8, bevel_width + 1);
    else
    label_rect.Deflate(bevel_width + 1, bevel_width + 1);

    // and around the picture, if any:
    if (img_h != 0)
    {
        switch (picture_loc)
        {
        default:
        case 0:  // the four corner positions
        case 2:  // and the center position
        case 4:  // don't affect the text position
        case 6:
        case 8:
            break;

        case 1:  // north
            label_rect.y += img_h;
            label_rect.h -= img_h;
            break;

        case 3:  // west
            label_rect.x += img_w;
            label_rect.w -= img_w;
            break;

        case 5:  // east
            label_rect.w -= img_w;
            break;

        case 7:  // south
            label_rect.h -= img_h;
            break;
        }
    }

    return label_rect;
}

// +--------------------------------------------------------------------+

Rect
Button::CalcPictureRect()
{
    int w     = rect.w;
    int h     = rect.h;
    int img_w = picture.Width();
    int img_h = picture.Height();
    
    if (img_h > h) img_h = h-2;
    if (img_w > w) img_w = w-2;
    
    int img_x_offset = bevel_width;
    int img_y_offset = bevel_width;
    
    switch (picture_loc)
    {
    default:
        // TOP ROW:
    case  0: break;

    case  1: img_x_offset = (w/2-img_w/2);
        break;

    case  2: img_x_offset = w - img_w - bevel_width;
        break;

        // MIDDLE ROW:
    case  3: img_y_offset = (h/2-img_h/2);
        break;
    case  4: img_x_offset = (w/2-img_w/2);
        img_y_offset = (h/2-img_h/2);
        break;
    case  5: img_x_offset = w - img_w - bevel_width;
        img_y_offset = (h/2-img_h/2);
        break;

        // BOTTOM ROW:
    case  6:
        img_y_offset = h - img_h - bevel_width;
        break;
    case  7: img_x_offset = (w/2-img_w/2);
        img_y_offset = h - img_h - bevel_width;
        break;
    case  8: img_x_offset = w - img_w - bevel_width;
        img_y_offset = h - img_h - bevel_width;
        break;
    }
    
    Rect img_rect;
    img_rect.x = img_x_offset;
    img_rect.y = img_y_offset;

    if (animated && button_state > 0) {
        img_rect.x += button_state;
        img_rect.y += button_state;
    }

    img_rect.w = img_w;
    img_rect.h = img_h;

    return img_rect;
}

// +--------------------------------------------------------------------+

void
Button::DrawImage(Bitmap* bmp, const Rect& irect)
{
    if (bmp) {
        DrawBitmap(irect.x,
        irect.y,
        irect.x + irect.w,
        irect.y + irect.h,
        bmp,
        Video::BLEND_ALPHA);
    }
}

// +--------------------------------------------------------------------+

int Button::OnMouseMove(int x, int y)
{
    bool dirty = false;

    if (captured)
    {
        ActiveWindow* test = GetCapture();

        if (test != this)
        {
            captured = false;
            button_state = pre_state;
            dirty = true;
        }

        else if (sticky)
        {
            if (button_state == 2)
            {
                if (!rect.Contains(x,y))
                {
                    button_state = pre_state;
                    dirty = true;
                }
            }
            else
            {
                if (rect.Contains(x,y))
                {
                    button_state = 2;
                    dirty = true;
                }
            }
        }
        else
        {
            if (button_state == 1)
            {
                if (!rect.Contains(x,y))
                {
                    button_state = 0;
                    dirty = true;
                }
            }
            else
            {
                if (rect.Contains(x,y))
                {
                    button_state = 1;
                    dirty = true;
                }
            }
        }
    }

    return ActiveWindow::OnMouseMove(x,y);
}

int Button::OnLButtonDown(int x, int y)
{
    if (!captured)
    captured = SetCapture();

    if (sticky)
    button_state = 2;
    else
    button_state = 1;

    return ActiveWindow::OnLButtonDown(x,y);
}

int Button::OnLButtonUp(int x, int y)
{
    if (captured) {
        ReleaseCapture();
        captured = false;
    }

    button_state = pre_state;
    return ActiveWindow::OnLButtonUp(x,y);
}

void Button::SetVolume(int vol)
{
    if (vol >= -10000 && vol <= 0)
    gui_volume = vol;
}

void Button::PlaySound(int n)
{
    Sound* sound = 0;

    switch (n) {
    default:
    case SND_BUTTON:        if (button_sound)       sound = button_sound->Duplicate();        break;
    case SND_CLICK:         if (click_sound)        sound = click_sound->Duplicate();         break;
    case SND_SWISH:         if (swish_sound)        sound = swish_sound->Duplicate();         break;
    case SND_CHIRP:         if (chirp_sound)        sound = chirp_sound->Duplicate();         break;
    case SND_ACCEPT:        if (accept_sound)       sound = accept_sound->Duplicate();        break;
    case SND_REJECT:        if (reject_sound)       sound = reject_sound->Duplicate();        break;
    case SND_CONFIRM:       if (confirm_sound)      sound = confirm_sound->Duplicate();       break;
    case SND_LIST_SELECT:   if (list_select_sound)  sound = list_select_sound->Duplicate();   break;
    case SND_LIST_SCROLL:   if (list_scroll_sound)  sound = list_scroll_sound->Duplicate();   break;
    case SND_LIST_DROP:     if (list_drop_sound)    sound = list_drop_sound->Duplicate();     break;
    case SND_COMBO_OPEN:    if (combo_open_sound)   sound = combo_open_sound->Duplicate();    break;
    case SND_COMBO_CLOSE:   if (combo_close_sound)  sound = combo_close_sound->Duplicate();   break;
    case SND_COMBO_HILITE:  if (combo_hilite_sound) sound = combo_hilite_sound->Duplicate();  break;
    case SND_COMBO_SELECT:  if (combo_select_sound) sound = combo_select_sound->Duplicate();  break;
    case SND_MENU_OPEN:     if (menu_open_sound)    sound = menu_open_sound->Duplicate();     break;
    case SND_MENU_CLOSE:    if (menu_close_sound)   sound = menu_close_sound->Duplicate();    break;
    case SND_MENU_SELECT:   if (menu_select_sound)  sound = menu_select_sound->Duplicate();   break;
    case SND_MENU_HILITE:   if (menu_hilite_sound)  sound = menu_hilite_sound->Duplicate();   break;
    }

    if (sound) {
        sound->SetVolume(gui_volume);
        sound->Play();
    }
}

int Button::OnClick()
{
    PlaySound(SND_BUTTON);

    if (sticky)
    button_state = !pre_state;

    pre_state = button_state;

    return ActiveWindow::OnClick();
}

int Button::OnMouseEnter(int mx, int my)
{ 
    if (button_state >= 0)
    pre_state = button_state;

    if (button_state == 0)   
    button_state = -1;

    if (IsEnabled() && IsShown())
    PlaySound(SND_SWISH);

    return ActiveWindow::OnMouseEnter(mx, my);
}

int Button::OnMouseExit(int mx, int my)
{ 
    if (button_state == -1)
    button_state = pre_state;

    return ActiveWindow::OnMouseExit(mx, my);
}

// +--------------------------------------------------------------------+

void Button::SetStandardImage(Bitmap* img)
{
    standard_image = img;
    texture        = standard_image;
}

void Button::SetActivatedImage(Bitmap* img)
{
    activated_image = img;
}

void Button::SetTransitionImage(Bitmap* img)
{
    transition_image = img;
}

// +--------------------------------------------------------------------+

short Button::GetBevelWidth()
{
    return bevel_width;
}

void Button::SetBevelWidth(short nNewValue)
{
    if (nNewValue < 0) nNewValue = 0;
    if (nNewValue > rect.w/2) nNewValue = rect.w/2;
    bevel_width = nNewValue;
}

bool  Button::GetBorder()
{
    return border;
}

void  Button::SetBorder(bool bNewValue)
{
    border = bNewValue;
}

Color  Button::GetBorderColor()
{
    return border_color;
}

void  Button::SetBorderColor(Color newValue)
{
    border_color = newValue;
}

Color  Button::GetActiveColor()
{
    return active_color;
}

void  Button::SetActiveColor(Color newValue)
{
    active_color = newValue;
}

bool  Button::GetAnimated()
{
    return animated;
}

void  Button::SetAnimated(bool bNewValue)
{
    animated = bNewValue;
}

bool  Button::GetDropShadow()
{
    return drop_shadow;
}

void  Button::SetDropShadow(bool bNewValue)
{
    drop_shadow = bNewValue;
}

// +--------------------------------------------------------------------+

short Button::GetButtonState()
{
    return button_state;
}

void  Button::SetButtonState(short n)
{
    if (button_state != n && n >= -2 && n <= 2) {
        button_state = n;
        pre_state    = n;
    }
}

void  Button::GetPicture(Bitmap& img)
{
    img.CopyBitmap(picture);
}

void  Button::SetPicture(const Bitmap& img)
{
    picture.CopyBitmap(img);
    picture.AutoMask();
}

short Button::GetPictureLocation()
{
    return picture_loc;
}

void  Button::SetPictureLocation(short n)
{
    if (picture_loc != n && n >= 0 && n <= 8) {
        picture_loc = n;
    }
}

bool  Button::GetSticky()
{
    return sticky;
}

void  Button::SetSticky(bool n)
{
    if (sticky != n)
    sticky = n;
}