transmission/macosx/PiecesView.m

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/******************************************************************************
* $Id$
*
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* Copyright (c) 2006-2008 Transmission authors and contributors
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*
* 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.
*****************************************************************************/
#import "PiecesView.h"
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#import "Torrent.h"
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#import "InfoWindowController.h"
#import "utils.h"
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#define MAX_ACROSS 18
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#define BETWEEN 1.0f
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#define HIGH_PEERS 30
#define PIECE_NONE 0
#define PIECE_SOME 1
#define PIECE_HIGH_PEERS 2
#define PIECE_FINISHED 3
#define PIECE_FLASHING 4
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@implementation PiecesView
- (void) awakeFromNib
{
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//back image
fBack = [[NSImage alloc] initWithSize: [self bounds].size];
[fBack lockFocus];
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NSGradient * gradient = [[NSGradient alloc] initWithStartingColor: [NSColor colorWithCalibratedWhite: 0.0f alpha: 0.4f]
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endingColor: [NSColor colorWithCalibratedWhite: 0.2f alpha: 0.4f]];
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[gradient drawInRect: [self bounds] angle: 90.0f];
[gradient release];
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[fBack unlockFocus];
//store box colors
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fGreenAvailabilityColor = [[NSColor colorWithCalibratedRed: 0.0f green: 1.0f blue: 0.4f alpha: 1.0f] retain];
fBluePieceColor = [[NSColor colorWithCalibratedRed: 0.0f green: 0.4f blue: 0.8f alpha: 1.0f] retain];
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//actually draw the box
[self setTorrent: nil];
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}
- (void) dealloc
{
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tr_free(fPieces);
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[fBack release];
[fGreenAvailabilityColor release];
[fBluePieceColor release];
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[super dealloc];
}
- (void) setTorrent: (Torrent *) torrent
{
[self clearView];
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fTorrent = torrent;
if (fTorrent)
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{
//determine relevant values
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fNumPieces = MIN([fTorrent pieceCount], MAX_ACROSS * MAX_ACROSS);
fAcross = ceil(sqrt(fNumPieces));
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CGFloat width = [self bounds].size.width;
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fWidth = (width - (fAcross + 1) * BETWEEN) / fAcross;
fExtraBorder = (width - ((fWidth + BETWEEN) * fAcross + BETWEEN)) / 2;
}
//reset the view to blank
NSImage * newBack = [fBack copy];
[self setImage: newBack];
[newBack release];
[self setNeedsDisplay];
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}
- (void) clearView
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{
tr_free(fPieces);
fPieces = NULL;
}
- (void) updateView
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{
if (!fTorrent)
return;
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//determine if first time
BOOL first = NO;
if (!fPieces)
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{
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fPieces = (int8_t *)tr_malloc(fNumPieces * sizeof(int8_t));
first = YES;
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}
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int8_t * pieces = NULL;
float * piecesPercent = NULL;
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BOOL showAvailablity = [[NSUserDefaults standardUserDefaults] boolForKey: @"PiecesViewShowAvailability"];
if (showAvailablity)
{
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pieces = (int8_t *)tr_malloc(fNumPieces * sizeof(int8_t));
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[fTorrent getAvailability: pieces size: fNumPieces];
}
else
{
piecesPercent = (float *)tr_malloc(fNumPieces * sizeof(float));
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[fTorrent getAmountFinished: piecesPercent size: fNumPieces];
}
NSImage * image = [self image];
NSInteger index = -1;
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NSRect rect = NSMakeRect(0, 0, fWidth, fWidth);
BOOL change = NO;
for (NSInteger i = 0; i < fAcross; i++)
for (NSInteger j = 0; j < fAcross; j++)
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{
index++;
if (index >= fNumPieces)
{
i = fAcross;
break;
}
NSColor * pieceColor = nil;
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if (showAvailablity ? pieces[index] == -1 : piecesPercent[index] == 1.0f)
{
if (first || fPieces[index] != PIECE_FINISHED)
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{
if (!first && fPieces[index] != PIECE_FLASHING)
{
pieceColor = [NSColor orangeColor];
fPieces[index] = PIECE_FLASHING;
}
else
{
pieceColor = fBluePieceColor;
fPieces[index] = PIECE_FINISHED;
}
}
}
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else if (showAvailablity ? pieces[index] == 0 : piecesPercent[index] == 0.0f)
{
if (first || fPieces[index] != PIECE_NONE)
{
pieceColor = [NSColor whiteColor];
fPieces[index] = PIECE_NONE;
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}
}
else if (showAvailablity && pieces[index] >= HIGH_PEERS)
{
if (first || fPieces[index] != PIECE_HIGH_PEERS)
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{
pieceColor = fGreenAvailabilityColor;
fPieces[index] = PIECE_HIGH_PEERS;
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}
}
else
{
//always redraw "mixed"
CGFloat percent = showAvailablity ? (CGFloat)pieces[index]/HIGH_PEERS : piecesPercent[index];
NSColor * fullColor = showAvailablity ? fGreenAvailabilityColor : fBluePieceColor;
pieceColor = [[NSColor whiteColor] blendedColorWithFraction: percent ofColor: fullColor];
fPieces[index] = PIECE_SOME;
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}
if (pieceColor)
{
//avoid unneeded memory usage by only locking focus if drawing will occur
if (!change)
{
change = YES;
[image lockFocus];
}
rect.origin = NSMakePoint(j * (fWidth + BETWEEN) + BETWEEN + fExtraBorder,
[image size].width - (i + 1) * (fWidth + BETWEEN) - fExtraBorder);
[pieceColor set];
NSRectFill(rect);
}
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}
if (change)
{
[image unlockFocus];
[self setNeedsDisplay];
}
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tr_free(pieces);
tr_free(piecesPercent);
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}
- (BOOL) acceptsFirstMouse: (NSEvent *) event
{
return YES;
}
- (void) mouseDown: (NSEvent *) event
{
if (fTorrent)
[[[self window] windowController] setPiecesViewForAvailable:
![[NSUserDefaults standardUserDefaults] boolForKey: @"PiecesViewShowAvailability"]];
[super mouseDown: event];
}
@end