/*
   Copyright (C) 2003 Reed Mideke.

   This file is part of GtkRadiant.

   GtkRadiant 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.

   GtkRadiant 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 GtkRadiant; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

//
// bkgrnd2d Plugin dialog
//
// Code by reyalP aka Reed Mideke
//
// Based on various other plugins
//

#include <gtk/gtk.h>

#include "bkgrnd2d.h"
#include "dialog.h"

// spaces to make label nice and big
#define NO_FILE_MSG "        (no file loaded)        "

static ui::Window pDialogWnd{ui::null};
static GtkWidget *pNotebook;
static GtkTooltips *pTooltips;

class CBackgroundDialogPage
{
private:
GtkWidget *m_pWidget;
GtkWidget *m_pTabLabel;
ui::Label m_pFileLabel;
GtkWidget *m_pPosLabel;
VIEWTYPE m_vt;
bool m_bValidFile;

public:
CBackgroundImage *m_pImage;
CBackgroundDialogPage( VIEWTYPE vt );
void Append( GtkWidget *notebook );
void Browse();
void Reload();
void SetPosLabel();
//  ~BackgroundDialogPage();
};


// dialog page callbacks
static void browse_callback( GtkWidget *widget, gpointer data ){
	( (CBackgroundDialogPage *)data )->Browse();
}

static void reload_callback( GtkWidget *widget, gpointer data ){
	( (CBackgroundDialogPage *)data )->Reload();
}

static void size_sel_callback( GtkWidget *widget, gpointer data ){
	CBackgroundDialogPage *pPage = (CBackgroundDialogPage *)data;
	if ( pPage->m_pImage->SetExtentsSel() ) {
		pPage->SetPosLabel();
	}
}

static void size_mm_callback( GtkWidget *widget, gpointer data ){
	CBackgroundDialogPage *pPage = (CBackgroundDialogPage *)data;
	if ( pPage->m_pImage->SetExtentsMM() ) {
		pPage->SetPosLabel();
	}
}

static void alpha_adjust_callback( GtkWidget *widget, gpointer data ){
	CBackgroundDialogPage *pPage = (CBackgroundDialogPage *)data;
	pPage->m_pImage->m_alpha = (float)gtk_range_get_value( GTK_RANGE( widget ) );
	g_FuncTable.m_pfnSysUpdateWindows( W_XY );
}

void CBackgroundDialogPage::Reload(){
	if ( m_bValidFile ) {
		m_pImage->Load( gtk_label_get_text( GTK_LABEL( m_pFileLabel ) ) );
	}
}

void CBackgroundDialogPage::Browse(){
	char browsedir[PATH_MAX];
	const char *ct;
	const char *newfile;
	char *t;

	//TODO GetMapName saves the map. eeep!
	//also with no map, returns unnamed.map, otherwise returns full path
//	Syn_Printf(MSG_PREFIX "GetMapName() %s\n",
//				g_FuncTable.m_pfnGetMapName());

	ct = g_FuncTable.m_pfnReadProjectKey( "basepath" );
	// TODO shouldn't need this stuff
	if ( !ct || !strlen( ct ) ) {
		Syn_Printf( MSG_PREFIX "basepath = NULL or empty\n" );
		return;
	}
	Syn_Printf( MSG_PREFIX "basepath: %s\n",ct );
	if ( strlen( ct ) >= PATH_MAX ) {
		Syn_Printf( MSG_PREFIX "base game dir too long\n" );
		return;
	}

	strcpy( browsedir,ct );
	// make sure we have a trailing /
	if ( browsedir[strlen( browsedir ) - 1] != '/' ) {
		strcat( browsedir,"/" );
	}

	//if we dont have a file yet, don't try to use it for default dir
	if ( m_bValidFile ) {
		// filename should always be a nice clean unix style relative path
		ct = gtk_label_get_text( GTK_LABEL( m_pFileLabel ) );
		strcat( browsedir,ct );
		Syn_Printf( MSG_PREFIX "full path: %s\n",browsedir );

		// lop off the file part
		t = browsedir + strlen( browsedir ) - 1;
		while ( t != browsedir && *t != '/' )
			t--;
		*t = 0;
	}
	Syn_Printf( MSG_PREFIX "browse directory %s\n",browsedir );

//does NOT need freeing contrary to include/qerplugin.h comments
//TODO bug/patch for comments
//TODO patern gets fucked up sometimes if empty
//http://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=915
	newfile = g_FuncTable.m_pfnFileDialog( pDialogWnd,TRUE,
										   "Load Background Image",browsedir,FILETYPE_KEY );
	if ( !newfile ) {
		Syn_Printf( MSG_PREFIX "newfile = NULL\n" );
		return;
	}
	Syn_Printf( MSG_PREFIX "newfile: %s\n",newfile );
	newfile = g_FileSystemTable.m_pfnExtractRelativePath( newfile );

	if ( !newfile ) {
		Syn_Printf( MSG_PREFIX "newfile = NULL\n" );
		return;
	}
	Syn_Printf( MSG_PREFIX "newfile: %s\n",newfile );

	if ( m_pImage->Load( newfile ) ) {
		m_bValidFile = true;
		m_pFileLabel.text(newfile);
	}
}

void CBackgroundDialogPage::SetPosLabel(){
	char s[64];
	// TODO no snprintf ?
	sprintf( s, "Size/Position (%d,%d) (%d,%d)",(int)( m_pImage->m_xmin ),
			 (int)( m_pImage->m_ymin ),(int)( m_pImage->m_xmax ),(int)( m_pImage->m_ymax ) );
	m_pPosLabel.text(s);
}

CBackgroundDialogPage::CBackgroundDialogPage( VIEWTYPE vt ){
	GtkWidget *w;

	m_vt = vt;

	m_bValidFile = false;

	switch ( m_vt )
	{
	case XY:
		m_pTabLabel = ui::Label( "X/Y" );
		m_pImage = &backgroundXY;
		break;
	case XZ:
		m_pTabLabel = ui::Label( "X/Z" );
		m_pImage = &backgroundXZ;
		break;
	case YZ:
		m_pTabLabel = ui::Label( "Y/Z" );
		m_pImage = &backgroundYZ;
		break;
	}
// A vbox to hold everything
	m_pWidget = ui::VBox( FALSE,0 );
// Frame for file row
	auto frame = ui::Frame( "File" );
	m_pWidget.pack_start(frame, FALSE, FALSE, 2 );

// hbox for first row
	auto hbox = ui::HBox( FALSE,5 );
	gtk_container_set_border_width( GTK_CONTAINER( hbox ),4 );
	frame.add(hbox);

// label to display filename
	m_pFileLabel  = ui::Label( NO_FILE_MSG );
	gtk_label_set_selectable( GTK_LABEL( m_pFileLabel ),TRUE );
//TODO set min size ? done with spaces right now
	hbox.pack_start(m_pFileLabel, TRUE, TRUE, 5 );

	m_pFileLabel.show();

	w = ui::Button( "Browse..." );
	w.connect( "clicked", G_CALLBACK( browse_callback ), ( gpointer ) this );
	hbox.pack_start(w, FALSE, FALSE, 5 );
	gtk_tooltips_set_tip( pTooltips, w, "Select a file", NULL );
	w.show();

	w = ui::Button( "Reload" );
	w.connect( "clicked", G_CALLBACK( reload_callback ), ( gpointer ) this );
	// TODO disable until we have file
	// gtk_widget_set_sensitive(w,FALSE);
	gtk_tooltips_set_tip( pTooltips, w, "Reload current file", NULL );
	hbox.pack_start(w, FALSE, FALSE, 5 );
	w.show();

	hbox.show();
	frame.show();

// second row (rendering options)
	frame = ui::Frame( "Rendering" );
	m_pWidget.pack_start(frame, FALSE, FALSE, 2 );

	hbox = ui::HBox( FALSE,5 );
	gtk_container_set_border_width( GTK_CONTAINER( hbox ),4 );
	frame.add(hbox);

	w = ui::Label( "Vertex alpha:" );
	hbox.pack_start(w, FALSE, FALSE, 5 );
	w.show();

	w = ui::HScale( 0.0, 1.0, 0.01 );
	gtk_range_set_value( GTK_RANGE( w ),0.5 );
	gtk_scale_set_value_pos( GTK_SCALE( w ),GTK_POS_LEFT );
	w.connect( "value-changed", G_CALLBACK( alpha_adjust_callback ), ( gpointer ) this );
	hbox.pack_start(w, TRUE, TRUE, 5 );
	gtk_tooltips_set_tip( pTooltips, w, "Set image transparancy", NULL );
	w.show();

	hbox.show();
	frame.show();
// Third row (size and position)
	frame = ui::Frame( "Size/Position (undefined)" );
	m_pPosLabel = gtk_frame_get_label_widget( GTK_FRAME( frame ) );
	m_pWidget.pack_start( frame, FALSE, FALSE, 2 );

	hbox = ui::HBox( FALSE,5 );
	frame.add(hbox);
	gtk_container_set_border_width( GTK_CONTAINER( hbox ),4 );

	w = ui::Button( "from selection" );
	hbox.pack_start(w, TRUE, FALSE, 5 );
	w.connect( "clicked", G_CALLBACK( size_sel_callback ), ( gpointer ) this );
	gtk_tooltips_set_tip( pTooltips, w, "Set the size of the image to the bounding rectangle of all selected brushes and entities", NULL );
	w.show();

	if ( m_vt == XY ) {
		w = ui::Button( "from map mins/maxs" );
		hbox.pack_start(w, TRUE, FALSE, 2 );
		w.connect( "clicked", G_CALLBACK( size_mm_callback ), ( gpointer ) this );
		gtk_tooltips_set_tip( pTooltips, w, "Set the size of the image using the mapcoordsmins and mapcoordsmaxs keys of the worldspawn entity", NULL );
		w.show();
	}

	hbox.show();
	frame.show();

	m_pWidget.show();
}

void CBackgroundDialogPage::Append( GtkWidget *notebook ){
	gtk_notebook_append_page( GTK_NOTEBOOK( notebook ), m_pWidget, m_pTabLabel );
}

// dialog global callbacks
/*
   static gint expose_callback( GtkWidget *widget, gpointer data )
   {
    return FALSE;
   }
 */

static void response_callback( GtkWidget *widget, gint response, gpointer data ){
	if ( response == GTK_RESPONSE_CLOSE ) {
		gtk_widget_hide( pDialogWnd );
	}
}

static gint close_callback( GtkWidget *widget, gpointer data ){
	gtk_widget_hide( pDialogWnd );
	return TRUE;
}

void InitBackgroundDialog(){
	CBackgroundDialogPage *pPage;

	pDialogWnd = gtk_dialog_new_with_buttons( "Background Images",
											  g_pMainWidget,
											  (GtkDialogFlags)( GTK_DIALOG_DESTROY_WITH_PARENT ),
	                                          // TODO dialog with no buttons
	                                          //										  GTK_STOCK_CLOSE,
	                                          //										  GTK_RESPONSE_CLOSE,
											  NULL );
	pDialogWnd.connect( "delete_event", G_CALLBACK( close_callback ), NULL );
	pDialogWnd.connect( "response", G_CALLBACK( response_callback ), NULL );
//  pDialogWnd.connect( "expose_event", G_CALLBACK( ci_expose ), NULL );

	pTooltips = gtk_tooltips_new();

	pNotebook = gtk_notebook_new();
	pPage = new CBackgroundDialogPage( XY );
	pPage->Append( pNotebook );
	pPage = new CBackgroundDialogPage( XZ );
	pPage->Append( pNotebook );
	pPage = new CBackgroundDialogPage( YZ );
	pPage->Append( pNotebook );

	gtk_box_pack_start( GTK_BOX( GTK_DIALOG( pDialogWnd )->vbox ), pNotebook, TRUE, TRUE, 0 );

	pNotebook.show();

	gtk_widget_realize( pDialogWnd );
}

void ShowBackgroundDialog(){
	gtk_window_present( pDialogWnd );
}

void ShowBackgroundDialogPG( int page ){
	gtk_notebook_set_current_page( GTK_NOTEBOOK( pNotebook ),page );
	ShowBackgroundDialog();
}