/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

//=============================================================================
//
// Implementation from acgui.h and acgui.cpp specific to Engine runtime
//
//=============================================================================

#include "ags/shared/ac/game_version.h"
#include "ags/engine/ac/system.h"
#include "ags/shared/font/fonts.h"
#include "ags/shared/gui/guimain.h"
#include "ags/shared/gui/guibutton.h"
#include "ags/shared/gui/guilabel.h"
#include "ags/shared/gui/guilistbox.h"
#include "ags/shared/gui/guitextbox.h"
#include "ags/shared/ac/gamesetupstruct.h"
#include "ags/engine/ac/global_translation.h"
#include "ags/engine/ac/string.h"
#include "ags/shared/ac/spritecache.h"
#include "ags/shared/gfx/bitmap.h"
#include "ags/engine/gfx/blender.h"
#include "ags/globals.h"

namespace AGS3 {

using namespace AGS::Shared;

// For engine these are defined in ac.cpp
extern int eip_guiobj;
extern void replace_macro_tokens(const char *, String &);

// For engine these are defined in acfonts.cpp
extern void ensure_text_valid_for_font(char *, int);
//

 // in ac_runningame


bool GUIMain::HasAlphaChannel() const {
	if (this->BgImage > 0) {
		// alpha state depends on background image
		return is_sprite_alpha(this->BgImage);
	}
	if (this->BgColor > 0) {
		// not alpha transparent if there is a background color
		return false;
	}
	// transparent background, enable alpha blending
	return _GP(game).GetColorDepth() >= 24 &&
		// transparent background have alpha channel only since 3.2.0;
		// "classic" gui rendering mode historically had non-alpha transparent backgrounds
		// (3.2.0 broke the compatibility, now we restore it)
		loaded_game_file_version >= kGameVersion_320 && _GP(game).options[OPT_NEWGUIALPHA] != kGuiAlphaRender_Legacy;
}

//=============================================================================
// Engine-specific implementation split out of acgui.h
//=============================================================================

void check_font(int32_t *fontnum) {
	// do nothing
}

//=============================================================================
// Engine-specific implementation split out of acgui.cpp
//=============================================================================

int get_adjusted_spritewidth(int spr) {
	return _GP(spriteset)[spr]->GetWidth();
}

int get_adjusted_spriteheight(int spr) {
	return _GP(spriteset)[spr]->GetHeight();
}

bool is_sprite_alpha(int spr) {
	return ((_GP(game).SpriteInfos[spr].Flags & SPF_ALPHACHANNEL) != 0);
}

void set_eip_guiobj(int eip) {
	eip_guiobj = eip;
}

int get_eip_guiobj() {
	return eip_guiobj;
}

bool outlineGuiObjects = false;

namespace AGS {
namespace Shared {

bool GUIObject::IsClickable() const {
	return (Flags & kGUICtrl_Clickable) != 0;
}

void GUILabel::PrepareTextToDraw() {
	replace_macro_tokens(Flags & kGUICtrl_Translated ? String(get_translation(Text)) : Text, _textToDraw);
}

size_t GUILabel::SplitLinesForDrawing(SplitLines &lines) {
	// Use the engine's word wrap tool, to have hebrew-style writing and other features
	return break_up_text_into_lines(_textToDraw, lines, Width, Font);
}

void GUITextBox::DrawTextBoxContents(Bitmap *ds, color_t text_color) {
	wouttext_outline(ds, X + 1 + get_fixed_pixel_size(1), Y + 1 + get_fixed_pixel_size(1), Font, text_color, Text);
	if (IsGUIEnabled(this)) {
		// draw a cursor
		int draw_at_x = wgettextwidth(Text, Font) + X + 3;
		int draw_at_y = Y + 1 + getfontheight(Font);
		ds->DrawRect(Rect(draw_at_x, draw_at_y, draw_at_x + get_fixed_pixel_size(5), draw_at_y + (get_fixed_pixel_size(1) - 1)), text_color);
	}
}

void GUIListBox::DrawItemsFix() {
	// do nothing
}

void GUIListBox::DrawItemsUnfix() {
	// do nothing
}

void GUIListBox::PrepareTextToDraw(const String &text) {
	if (Flags & kGUICtrl_Translated)
		_textToDraw = get_translation(text);
	else
		_textToDraw = text;
}

void GUIButton::PrepareTextToDraw() {
	if (Flags & kGUICtrl_Translated)
		_textToDraw = get_translation(_text);
	else
		_textToDraw = _text;
}

} // namespace Shared
} // namespace AGS
} // namespace AGS3