haiku/src/preferences/appearance/CurView.cpp

//------------------------------------------------------------------------------
//	Copyright (c) 2001-2002, OpenBeOS
//
//	Permission is hereby granted, free of charge, to any person obtaining a
//	copy of this software and associated documentation files (the "Software"),
//	to deal in the Software without restriction, including without limitation
//	the rights to use, copy, modify, merge, publish, distribute, sublicense,
//	and/or sell copies of the Software, and to permit persons to whom the
//	Software is furnished to do so, subject to the following conditions:
//
//	The above copyright notice and this permission notice shall be included in
//	all copies or substantial portions of the Software.
//
//	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
//	FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
//	DEALINGS IN THE SOFTWARE.
//
//	File Name:		CurView.cpp
//	Author:			DarkWyrm <bpmagic@columbus.rr.com>
//	Description:	cursor handler for the app
//  
//------------------------------------------------------------------------------
#include <OS.h>
#include <Directory.h>
#include <Alert.h>
#include <storage/Path.h>
#include <Entry.h>
#include <File.h>
#include <stdio.h>
#include "CursorWhichItem.h"
#include "CurView.h"
#include <PortLink.h>
#include "defs.h"
#include "ServerConfig.h"
#include <ServerProtocol.h>
#include <PortMessage.h>
#include <InterfaceDefs.h>
#include <TranslationUtils.h>

//#define DEBUG_CURSORSET

#define SAVE_CURSORSET 'svcu'
#define DELETE_CURSORSET 'dlcu'
#define LOAD_CURSORSET 'ldcu'
#define CURSOR_UPDATED 'csru'

CurView::CurView(const BRect &frame, const char *name, int32 resize, int32 flags)
	:BView(frame,name,resize,flags), settings(B_SIMPLE_DATA)
{
	SetViewColor(ui_color(B_PANEL_BACKGROUND_COLOR));
	
	
	cursorset=new CursorSet("Default");
	
/*
	// Code disabled -- cursor set management belongs in another app
	BMenuBar *mb=new BMenuBar(BRect(0,0,Bounds().Width(),16),"menubar");

	settings_menu=new BMenu("Settings");
	settings_menu->AddItem(new BMenuItem("Save Cursor Set",new BMessage(SAVE_CURSORSET),'S'));
	settings_menu->AddSeparatorItem();
	settings_menu->AddItem(new BMenuItem("Delete Cursor Set",new BMessage(DELETE_CURSORSET)));
	mb->AddItem(settings_menu);

	cursorset_menu=LoadCursorSets();
	if(cursorset_menu)
		mb->AddItem(cursorset_menu);
	else
	{
		// We should *never* be here, but just in case....
		cursorset_menu=new BMenu("Cursor Sets");
		mb->AddItem(cursorset_menu);
	}
	AddChild(mb);
*/
	BRect wellrect(0,0,20,20);
	wellrect.OffsetTo(10,25);
	wellrect.right=wellrect.left+50;
	
/*
	// Code disabled -- cursor set management belongs in another app
	cursorset_label=new BStringView(wellrect,"cursorset_label","Cursor Set: ");
	AddChild(cursorset_label);
	cursorset_label->ResizeToPreferred();
	cursorset_name="<untitled>";
*/

	// Set up list of cursor attributes
	BRect cvrect;
	BRect rect;

	cvrect.Set(0,0,75,75);
	
	bmpview=new BitmapView(BPoint(10,10),new BMessage(CURSOR_UPDATED),this);
	bmpview->MoveTo( (Bounds().Width()-bmpview->Bounds().Width())/2,30);
	AddChild(bmpview);


	rect.left=(Bounds().Width()-200)/2;
	rect.right=rect.left+190;
	rect.top=bmpview->Frame().bottom+30;
	rect.bottom=rect.top+100;
	
	attrlist=new BListView(rect,"AttributeList");
	
	scrollview=new BScrollView("ScrollView",attrlist, B_FOLLOW_LEFT |
		B_FOLLOW_TOP, 0, false, true);
	AddChild(scrollview);
	scrollview->SetViewColor(ui_color(B_PANEL_BACKGROUND_COLOR));
	
	attrlist->SetSelectionMessage(new BMessage(ATTRIBUTE_CHOSEN));

	attrlist->AddItem(new CursorWhichItem(B_CURSOR_DEFAULT));
	attrlist->AddItem(new CursorWhichItem(B_CURSOR_TEXT));
	attrlist->AddItem(new CursorWhichItem(B_CURSOR_MOVE));
	attrlist->AddItem(new CursorWhichItem(B_CURSOR_DRAG));
	attrlist->AddItem(new CursorWhichItem(B_CURSOR_RESIZE));
	attrlist->AddItem(new CursorWhichItem(B_CURSOR_RESIZE_NWSE));
	attrlist->AddItem(new CursorWhichItem(B_CURSOR_RESIZE_NESW));
	attrlist->AddItem(new CursorWhichItem(B_CURSOR_RESIZE_NS));
	attrlist->AddItem(new CursorWhichItem(B_CURSOR_RESIZE_EW));

	
	cvrect.Set(0,0,60,30);
	cvrect.OffsetTo( (Bounds().Width()-200)/2,scrollview->Frame().bottom+20);

	defaults=new BButton(cvrect,"DefaultsButton","Defaults",
		new BMessage(DEFAULT_SETTINGS),B_FOLLOW_LEFT |B_FOLLOW_TOP,
		B_WILL_DRAW | B_NAVIGABLE);
	AddChild(defaults);

	cvrect.OffsetBy(70,0);
	revert=new BButton(cvrect,"RevertButton","Revert",
		new BMessage(REVERT_SETTINGS),B_FOLLOW_LEFT |B_FOLLOW_TOP,
		B_WILL_DRAW | B_NAVIGABLE);
	AddChild(revert);
	revert->SetEnabled(false);
	
	cvrect.OffsetBy(70,0);
	apply=new BButton(cvrect,"ApplyButton","Apply",
		new BMessage(APPLY_SETTINGS),B_FOLLOW_LEFT |B_FOLLOW_TOP,
		B_WILL_DRAW | B_NAVIGABLE);
	AddChild(apply);
	apply->SetEnabled(false);

	BEntry entry(COLOR_SET_DIR);
	entry_ref ref;
	entry.GetRef(&ref);

	attribute=B_PANEL_BACKGROUND_COLOR;
	attrstring="Background";
	LoadSettings();

}

CurView::~CurView(void)
{
	delete cursorset;
}

void CurView::AllAttached(void)
{
	attrlist->Select(0);
	attrlist->SetTarget(this);
	apply->SetTarget(this);
	defaults->SetTarget(this);
	revert->SetTarget(this);
	bmpview->SetTarget(this);
	BMessenger msgr(this);
}

void CurView::MessageReceived(BMessage *msg)
{
	if(msg->WasDropped())
	{
	}

	switch(msg->what)
	{
		case CURSOR_UPDATED:
		{
			CursorWhichItem *cwi=(CursorWhichItem*)attrlist->ItemAt(attrlist->CurrentSelection());
			if(cwi)
				cwi->SetBitmap(bmpview->GetBitmap());
			
			break;
		}
		case ATTRIBUTE_CHOSEN:
		{
			CursorWhichItem *cwi=(CursorWhichItem*)attrlist->ItemAt(attrlist->CurrentSelection());
			if(cwi)
			{
				bmpview->SetBitmap(cwi->GetBitmap());
				bmpview->Invalidate();
			}
			
			break;
		}
		default:
			BView::MessageReceived(msg);
			break;
	}
}

/*
// Code disabled -- cursor set management belongs in another app
BMenu *CurView::LoadCursorSets(void)
{
#ifdef DEBUG_CURSORSET
printf("Loading cursor sets from disk\n");
#endif
	// This function populates the member menu *cursorset_menu with the cursor
	// set files located in the cursor set directory. To ensure that there are
	// no entries pointing to invalid cursor sets, they are validated before
	// a menu item is added.
	BDirectory dir;
	BEntry entry;
	BPath path;
	BString name;

	BMenu *menu=new BMenu("Cursor Sets");

	status_t dirstat=dir.SetTo(COLOR_SET_DIR);
	if(dirstat!=B_OK)
	{
		// We couldn't set the directory, so more than likely it just
		// doesn't exist. Create it and return an empty menu.
		switch(dirstat)
		{
			case B_NAME_TOO_LONG:
			{
				BAlert *a=new BAlert("OpenBeOS","Couldn't open the folder for cursor sets. "
					"You will be able to change system cursors, but be unable to save them to a cursor set. "
					"Please contact OpenBeOS about Appearance Preferences::CurView::"
					"LoadCursorSets::B_NAME_TOO_LONG for a bugfix", "OK",
					 NULL, NULL, B_WIDTH_AS_USUAL, B_WARNING_ALERT);
				a->Go();
				break;
			}
			case B_ENTRY_NOT_FOUND:
			{
				create_directory(COLOR_SET_DIR,0777);
				break;
			}
			case B_BAD_VALUE:
			{
				printf("CurView::LoadCursorSets(): Invalid cursorset folder path.\n");
				break;
			}
			case B_NO_MEMORY:
			{
				printf("CurView::LoadCursorSets(): No memory left. We're probably going to crash now. \n");
				break;
			}
			case B_BUSY:
			{
				printf("CurView::LoadCursorSets(): Busy node " CURSOR_SET_DIR "\n");
				break;
			}
			case B_FILE_ERROR:
			{
				BAlert *a=new BAlert("OpenBeOS","Couldn't open the folder for cursor sets "
					"because of a file error. Perhaps there is a file (instead of a folder) at " COLOR_SET_DIR
					"? You will be able to change system cursors, but be unable to save them to a cursor set. ",
					"OK", NULL, NULL, B_WIDTH_AS_USUAL, B_WARNING_ALERT);
				a->Go();
				break;
			}
			case B_NO_MORE_FDS:
			{
				BAlert *a=new BAlert("OpenBeOS","Couldn't open the folder for cursor sets "
					"because there are too many open files. Please close some files and restart "
					" this application.", "OK",
					 NULL, NULL, B_WIDTH_AS_USUAL, B_WARNING_ALERT);
				a->Go();
				if(Window())
					Window()->PostMessage(B_QUIT_REQUESTED);
				break;
			}
		}
		
		return menu;
	}

	int32 count=dir.CountEntries();
	
	
	BMessage *msg;
	CursorSet cs(NULL);
	
	for(int32 i=0;i<count;i++)
	{
		dir.GetNextEntry(&entry);
		entry.GetPath(&path);
		
		if(cs.Load(path.Path())!=B_OK)
			continue;
		
		// Don't include the default set in the menu
		name=path.Leaf();
		if(name.Compare("Default")==0)
			continue;
		
		name=path.Path();
		
		name.Remove(0,name.FindLast('/')+1);

		msg=new BMessage(LOAD_CURSORSET);
		msg->AddString("name",name);
		menu->AddItem(new BMenuItem(name.String(),msg));
	}
	
	return menu;
}	

void CurView::SetCursorSetName(const char *name)
{
	if(!name)
		return;
	BString namestr("Cursor Set: ");
	cursorset_name=name;
	namestr+=name;
	cursorset_label->SetText(namestr.String());
	cursorset_label->ResizeToPreferred();
	cursorset_label->Invalidate();
}
*/

void CurView::SaveSettings(void)
{
	// Save the current GUI cursor settings to the GUI cursors file in the 
	// path specified in defs.h
	
	BString path(SERVER_SETTINGS_DIR);
	path+=CURSOR_SETTINGS_NAME;
#ifdef DEBUG_CURSORSET
printf("SaveSettings: %s\n",path.String());
#endif
	cursorset->Save(path.String(),B_CREATE_FILE|B_ERASE_FILE);
	
//	prev_set_name=cursorset_name;
	revert->SetEnabled(false);
}

void CurView::LoadSettings(void)
{
	// Load the current GUI cursor settings from disk. This is done instead of
	// getting them from the server at this point for testing purposes. Comment
	// out the #define LOAD_SETTINGS_FROM_DISK line to use the server query code
#ifdef DEBUG_CURSORSET
printf("Loading settings from disk\n");
#endif
	settings.MakeEmpty();

	BDirectory dir,newdir;
	if(dir.SetTo(SERVER_SETTINGS_DIR)==B_ENTRY_NOT_FOUND)
	{
#ifdef DEBUG_CURSORSET
printf("Cursor set folder not found. Creating %s\n",SERVER_SETTINGS_DIR);
#endif
		create_directory(SERVER_SETTINGS_DIR,0777);
	}

	BString path(SERVER_SETTINGS_DIR);
	path+=CURSOR_SETTINGS_NAME;
	
	status_t stat=cursorset->Load(path.String());

	if(stat!=B_OK)
	{
#ifdef DEBUG_CURSORSET
printf("Couldn't open file %s for read\n",path.String());
#endif
		SetDefaults();
		SaveSettings();
	}
	return;
}

void CurView::SetDefaults(void)
{
	// The server will perform the necessary work to set defaults, so just ask it to do the
	// work for us. It is a synchronous procedure, so we will notify the server and load the cursor
	// set 'Default'.
	BString string(CURSOR_SET_DIR);
	string+="Default";
	
	cursorset->Load(string.String());

	port_id port=find_port(SERVER_PORT_NAME);
	if(port==B_NAME_NOT_FOUND)
		return;
		
	BPrivate::PortLink link(port);
	int32 code;
	
	link.StartMessage(AS_SET_SYSCURSOR_DEFAULTS);
	link.Flush();
	link.GetNextMessage(code);

}

BitmapView::BitmapView(const BPoint &pt,BMessage *message, const BHandler *handler, const BLooper *looper=NULL)
 : BBox(BRect(0,0,75,75).OffsetToCopy(pt),"bitmapview",B_FOLLOW_NONE,B_WILL_DRAW, B_PLAIN_BORDER),
 	BInvoker(message,handler,looper)
{
	SetFont(be_plain_font);
	bitmap=NULL;
	SetViewColor(ui_color(B_PANEL_BACKGROUND_COLOR));
	SetDrawingMode(B_OP_ALPHA);
	drawrect=Bounds().InsetByCopy(5,5);
}

BitmapView::~BitmapView(void)
{
}

void BitmapView::SetBitmap(BBitmap *bmp)
{
	bitmap=bmp;
}

void BitmapView::Draw(BRect r)
{
	BBox::Draw(r);
	
	if(bitmap)
		DrawBitmap(bitmap, drawrect);
}

void BitmapView::MessageReceived(BMessage *msg)
{
	if(msg->WasDropped())
	{
		entry_ref ref;
		if(msg->FindRef("refs",&ref)!=B_OK)
			return;
		
		BBitmap *tmp=BTranslationUtils::GetBitmap(&ref);
		if(tmp)
		{
			delete bitmap;
			bitmap=tmp;
			
			int32 offset;
			BRect r(Bounds());
			r.right-=10;
			r.bottom-=10;

			drawrect=bitmap->Bounds();
			if(r.Contains(bitmap->Bounds()))
			{
				// calculate a centered rect for direct display
				offset=((r.IntegerWidth()-bitmap->Bounds().IntegerWidth()) >> 1)+5;
				drawrect.OffsetBy(offset,offset);
			}
			else
			{
				// calculate a scaled-down rectangle for display
				drawrect.left=drawrect.top=0;
				
				if(bitmap->Bounds().Height() > bitmap->Bounds().Width())
				{
					drawrect.right=(r.Height()*bitmap->Bounds().Width())/bitmap->Bounds().Height();
					drawrect.bottom=r.Height();
					offset=((r.IntegerWidth()-drawrect.IntegerWidth()) >> 1)+5;
					drawrect.OffsetBy(offset,5);
				}
				else
				{
					drawrect.bottom=(r.Width()*bitmap->Bounds().Height())/bitmap->Bounds().Width();
					drawrect.right=r.Width();
					offset=((r.IntegerHeight()-drawrect.IntegerHeight()) >> 1)+5;
					drawrect.OffsetBy(5,offset);
				}
			}
			Invoke();
			Invalidate();
			return;
		}
	}
	else
		BBox::MessageReceived(msg);
}