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AppController.m
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AppController.m
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//
// AppController.m
//
// Created by Bernhard Jenny on 01.09.05.
// Copyright 2005 Bernhard Jenny. All rights reserved.
// More info on screen capturing: http://www.cocoadev.com/index.pl?ScreenShotCode
// and http://www.idevapps.com/forum/archive/index.php/t-2895.html
// Window fading and tranparent rounded window from: http://mattgemmell.com/source/
// Hot key handling: OverlayWindow.m in FunkyOverlayWindow sample code
// at http://developer.apple.com/samplecode/FunkyOverlayWindow/FunkyOverlayWindow.html
// For hot keys see also http://www.dbachrach.com/blog/2005/11/program-global-hotkeys-in-cocoa-easily.html
//
// Simulation of color blindness:
// Protanopia simulation after Digital Video Colourmaps for Checking the
// Legibility of Displays by Dichromat. F, Viénot, Hans Brettel, John D. Mollon
// Color Research and Application, Vol 24, No 4, ...
/*
// this is a slow, but readable version of the protan simulation
double gamma = 2.2;
double r = *(srcBitmapData + c * 4);
double g = *(srcBitmapData + c * 4 + 1);
double b = *(srcBitmapData + c * 4 + 2);
double rlin = pow(r / 255., gamma);
double glin = pow(g / 255., gamma);
double blin = pow(b / 255., gamma);
double r_lin = 0.992052 * rlin + 0.003974;
double g_lin = 0.992052 * glin + 0.003974;
double b_lin = 0.992052 * blin + 0.003974;
double r_protan = 0.1124 * r_lin + 0.8876 * g_lin + 0 * b_lin;
double g_protan = 0.1124 * r_lin + 0.8876 * g_lin + 0 * b_lin;
double b_protan = 0.0040 * r_lin - 0.0040 * g_lin + 1 * b_lin;
r = 255. * pow(r_protan, 1. / gamma);
g = 255. * pow(g_protan, 1. / gamma);
b = 255. * pow(b_protan, 1. / gamma);
*(dstBitmapData + c * 4) = (unsigned char)r;
*(dstBitmapData + c * 4 + 1) = (unsigned char)g;
*(dstBitmapData + c * 4 + 2) = (unsigned char)b;
*(dstBitmapData + c * 4 + 3) = 255;
*/
#include "WindowLevel.h"
#import "AppController.h"
#import "ClickableImageView.h"
#import "KeyableWindow.h"
#include "InfoText.h"
#import "LaunchAtLoginController.h"
#import "PFMoveApplication.h"
/* Web site for this project */
#define HOMEPAGE @"http://colororacle.org/"
/* wait this long for the menu to hide */
#define MILLISEC_TO_HIDE_MENU 50
/* interval for animating the menu icon while displaying the welcome dialog.
In seconds */
#define WELCOME_ANIMATION_INTERVAL 0.1
enum simulation {normalView, protan, deutan, tritan, grayscale};
// fading speed
#define FADETIMEINTERVAL 0.05
#define FADETRANSPARENCYSTEP 0.3
// Gamma for converting from screen rgb to linear rgb and back again.
// The publication describing the algorithm uses a gamma value of 2.2, which
// is the standard value on windows system and for sRGB. Macs mostly use a
// gamma value of 1.8. Differences between the two gamma settings are
// hardly visible though.
#define GAMMA 1.8
#define keyNone (-1)
#define DEFAULTDEUTANHOTKEY kVK_F5
#define DEFAULTPROTANHOTKEY keyNone
#define DEFAULTTRITANHOTKEY keyNone
#define DEFAULTGRAYSCALEHOTKEY kVK_F6
// handle hotkeys
const UInt32 kHotKeyIdentifier='blnd';
UInt32 gProtanHotKey;
UInt32 gDeutanHotKey;
UInt32 gTritanHotKey;
UInt32 gGrayscHotKey;
EventHotKeyRef gProtanHotKeyRef;
EventHotKeyRef gDeutanHotKeyRef;
EventHotKeyRef gTritanHotKeyRef;
EventHotKeyRef gGrayscaleHotKeyRef;
//EventHotKeyRef gRightArrowHotKeyRef;
//EventHotKeyRef gLeftArrowHotKeyRef;
EventHotKeyID gWindowsCloseHotKeyID;
const UInt32 kWindowsCloseHotKey = 0xd; // 'w'
EventHotKeyRef gWindowsCloseHotKeyRef;
// This routine is called when a hotkey is pressed.
pascal OSStatus hotKeyHandler(EventHandlerCallRef nextHandler, EventRef theEvent, void *userData)
{
// We can assume our hotkey was pressed
AppController *app = (AppController*)userData;
int simulationID = [app simulationID];
EventHotKeyID hkCom;
GetEventParameter(theEvent,kEventParamDirectObject,typeEventHotKeyID,NULL,sizeof(hkCom),NULL,&hkCom);
NSWindow *keyWindow = nil;
switch (hkCom.id) {
case 1:
if (simulationID == deutan)
[app selItemNormal:nil];
else
[app selItemDeutan:nil];
break;
case 2:
if (simulationID == protan)
[app selItemNormal:nil];
else
[app selItemProtan:nil];
break;
case 3:
if (simulationID == tritan)
[app selItemNormal:nil];
else
[app selItemTritan:nil];
break;
case 4:
if (simulationID == grayscale)
[app selItemNormal:nil];
else
[app selItemGrayscale:nil];
break;
case 5: // close a window
keyWindow = [NSApp keyWindow];
if (keyWindow != nil) {
[keyWindow orderOut:nil];
// hide this app if no window is visible anymore
NSWindow *aboutBox = [app aboutBox];
NSWindow *preferencesPanel = [app preferencesPanel];
if ([aboutBox isVisible] == NO && [preferencesPanel isVisible] == NO)
[NSApp hide:nil];
// bring the remaining window to the foreground
else if (keyWindow == aboutBox)
[preferencesPanel makeKeyAndOrderFront:nil];
else
[aboutBox makeKeyAndOrderFront:nil];
}
break;
}
return noErr;
}
@implementation AppController
-(int)menu2fkey:(NSInteger)menuItemID
{
switch (menuItemID) {
case 0:
return keyNone;
case 2:
return kVK_F1;
case 3:
return kVK_F2;
case 4:
return kVK_F3;
case 5:
return kVK_F4;
case 6:
return kVK_F5;
case 7:
return kVK_F6;
case 8:
return kVK_F7;
case 9:
return kVK_F8;
case 10:
return kVK_F9;
case 11:
return kVK_F10;
case 12:
return kVK_F11;
case 13:
return kVK_F12;
case 14:
return kVK_F13;
case 15:
return kVK_F14;
case 16:
return kVK_F15;
case 17:
return kVK_F16;
case 18:
return kVK_F17;
case 19:
return kVK_F18;
case 20:
return kVK_F19;
case 21:
return kVK_F20;
}
return keyNone;
}
-(int)fkey2menu:(int)fkey
{
switch (fkey) {
case keyNone:
return 0;
case kVK_F1:
return 2;
case kVK_F2:
return 3;
case kVK_F3:
return 4;
case kVK_F4:
return 5;
case kVK_F5:
return 6;
case kVK_F6:
return 7;
case kVK_F7:
return 8;
case kVK_F8:
return 9;
case kVK_F9:
return 10;
case kVK_F10:
return 11;
case kVK_F11:
return 12;
case kVK_F12:
return 13;
case kVK_F13:
return 14;
case kVK_F14:
return 15;
case kVK_F15:
return 16;
case kVK_F16:
return 17;
case kVK_F17:
return 18;
case kVK_F18:
return 19;
case kVK_F19:
return 20;
case kVK_F20:
return 21;
}
return -1;
}
-(NSString*)fkey2String:(int)fkey
{
switch (fkey) {
case kVK_F1:
return @"F1";
case kVK_F2:
return @"F2";
case kVK_F3:
return @"F3";
case kVK_F4:
return @"F4";
case kVK_F5:
return @"F5";
case kVK_F6:
return @"F6";
case kVK_F7:
return @"F7";
case kVK_F8:
return @"F8";
case kVK_F9:
return @"F9";
case kVK_F10:
return @"F10";
case kVK_F11:
return @"F11";
case kVK_F12:
return @"F12";
case kVK_F13:
return @"F13";
case kVK_F14:
return @"F14";
case kVK_F15:
return @"F15";
case kVK_F16:
return @"F16";
case kVK_F17:
return @"F17";
case kVK_F18:
return @"F18";
case kVK_F19:
return @"F19";
case kVK_F20:
return @"F20";
}
return @"-";
}
-(long)fkey2Unicode:(int)fkey
{
switch (fkey) {
case kVK_F1:
return NSF1FunctionKey;
case kVK_F2:
return NSF2FunctionKey;
case kVK_F3:
return NSF3FunctionKey;
case kVK_F4:
return NSF4FunctionKey;
case kVK_F5:
return NSF5FunctionKey;
case kVK_F6:
return NSF6FunctionKey;
case kVK_F7:
return NSF7FunctionKey;
case kVK_F8:
return NSF8FunctionKey;
case kVK_F9:
return NSF9FunctionKey;
case kVK_F10:
return NSF10FunctionKey;
case kVK_F11:
return NSF11FunctionKey;
case kVK_F12:
return NSF12FunctionKey;
case kVK_F13:
return NSF13FunctionKey;
case kVK_F14:
return NSF14FunctionKey;
case kVK_F15:
return NSF15FunctionKey;
case kVK_F16:
return NSF16FunctionKey;
case kVK_F17:
return NSF17FunctionKey;
case kVK_F18:
return NSF18FunctionKey;
case kVK_F19:
return NSF19FunctionKey;
case kVK_F20:
return NSF20FunctionKey;
}
return keyNone;
}
// from OverlayWindow.m in FunkyOverlayWindow sample code
-(void)installHotKeys
{
EventTypeSpec eventType;
EventHandlerUPP appHotKeyFunction = NewEventHandlerUPP(hotKeyHandler);
eventType.eventClass = kEventClassKeyboard;
eventType.eventKind = kEventHotKeyPressed;
InstallApplicationEventHandler(appHotKeyFunction,1,&eventType,self,NULL);
// install first deutan, then protan, then tritan, then grayscale.
// if two hot-keys use the same key, the first installed will be executed.
if (gDeutanHotKey != keyNone) {
EventHotKeyID deutanHotKeyID;
deutanHotKeyID.signature = kHotKeyIdentifier;
deutanHotKeyID.id = 1;
RegisterEventHotKey(gDeutanHotKey, 0, deutanHotKeyID, GetApplicationEventTarget(), 0, &gDeutanHotKeyRef);
}
if (gProtanHotKey != keyNone) {
EventHotKeyID protanHotKeyID;
protanHotKeyID.signature = kHotKeyIdentifier;
protanHotKeyID.id = 2;
RegisterEventHotKey(gProtanHotKey, 0, protanHotKeyID, GetApplicationEventTarget(), 0, &gProtanHotKeyRef);
}
if (gTritanHotKey != keyNone) {
EventHotKeyID tritanHotKeyID;
tritanHotKeyID.signature = kHotKeyIdentifier;
tritanHotKeyID.id = 3;
RegisterEventHotKey(gTritanHotKey, 0, tritanHotKeyID, GetApplicationEventTarget(), 0, &gTritanHotKeyRef);
}
if (gGrayscHotKey != keyNone) {
EventHotKeyID grayscaleHotKeyID;
grayscaleHotKeyID.signature = kHotKeyIdentifier;
grayscaleHotKeyID.id = 4;
RegisterEventHotKey(gGrayscHotKey, 0, grayscaleHotKeyID, GetApplicationEventTarget(), 0, &gGrayscaleHotKeyRef);
}
}
-(void)removeHotKeys
{
UnregisterEventHotKey (gProtanHotKeyRef);
UnregisterEventHotKey (gDeutanHotKeyRef);
UnregisterEventHotKey (gTritanHotKeyRef);
UnregisterEventHotKey (gGrayscaleHotKeyRef);
}
// close about and preferences windows with command-w
-(void)installCloseWindowsHotKey
{
// add hot key handler for closing windows (preferences panel and about box)
gWindowsCloseHotKeyID.signature=kHotKeyIdentifier;
gWindowsCloseHotKeyID.id = 5;
RegisterEventHotKey(kWindowsCloseHotKey, cmdKey, gWindowsCloseHotKeyID, GetApplicationEventTarget(), 0, &gWindowsCloseHotKeyRef);
}
-(void)removeCloseWindowHotKey
{
UnregisterEventHotKey (gWindowsCloseHotKeyRef);
}
-(void) updatePreferencesDefaultsButton
{
if (gProtanHotKey == DEFAULTPROTANHOTKEY
&& gDeutanHotKey == DEFAULTDEUTANHOTKEY
&& gTritanHotKey == DEFAULTTRITANHOTKEY
&& gGrayscHotKey == DEFAULTGRAYSCALEHOTKEY)
[prefsDefaultsButton setEnabled:NO];
else
[prefsDefaultsButton setEnabled:YES];
}
-(void)initLUTs
{
const double gamma_inv = 1. / GAMMA;
int i;
rgb2lin_red_LUT = malloc(sizeof(unsigned short) * 256);
for (i = 0; i < 256; i++) {
// compute linear rgb between 0 and 1
const double lin = (0.992052 * pow(i / 255., GAMMA) + 0.003974);
// scale linear rgb
rgb2lin_red_LUT[i] = (unsigned short)(lin * 32767.);
}
lin2rgb_LUT = malloc(sizeof(unsigned char) * 256);
for (i = 0; i < 256; i++) {
lin2rgb_LUT[i] = (unsigned char)(255. * pow(i / 255., gamma_inv));
}
}
-(void)initWindows
{
// Get the screen rect of our main display
NSRect screenRect = [[NSScreen mainScreen] frame];
// create a new window
mainWindow = [[KeyableWindow alloc] initWithContentRect:screenRect
styleMask:NSBorderlessWindowMask
backing:NSBackingStoreBuffered
defer:NO
screen:[NSScreen mainScreen]];
imageView = [[ClickableImageView alloc] initWithFrame:screenRect];
[imageView setDelegate:self];
[imageView setImageFrameStyle: NSImageFrameNone];
[imageView setImageScaling: NSScaleNone];
[mainWindow setContentView:imageView];
[mainWindow setInitialFirstResponder:imageView];
[infoView setDelegate:self];
[mainWindow addChildWindow:infoWindow ordered:NSWindowAbove];
}
-(void)initMenu
{
NSStatusBar *bar = [NSStatusBar systemStatusBar];
// build the NSStatusBar for selecting the type of color blindness
statusItem = [[bar statusItemWithLength:NSSquareStatusItemLength] retain];
[statusItem setImage:[NSImage imageNamed:@"menuIcon"]];
[statusItem setHighlightMode:YES];
[statusItem setEnabled:YES];
[statusItem setMenu:m_menu];
[statusItem setToolTip:TOOLTIPTEXT];
}
- (id)init
{
[super init];
if (self) {
[self initLUTs];
simulationID = normalView;
screenshot = nil;
quartzScreenCapture = nil;
shouldQuit = NO;
screenShotBuffer = nil;
simulationBuffer = nil;
gDeutanHotKey = DEFAULTDEUTANHOTKEY;
gProtanHotKey = DEFAULTPROTANHOTKEY;
gTritanHotKey = DEFAULTTRITANHOTKEY;
gGrayscHotKey = DEFAULTGRAYSCALEHOTKEY;
}
return self;
}
- (void)awakeFromNib
{
[aboutBox center];
[preferencesPanel center];
[self initWindows];
[self initMenu];
// button to resize info window needs transparent background outside the button area
[infoResizeButton setWantsLayer:YES];
infoResizeButton.layer.backgroundColor = [NSColor clearColor].CGColor;
}
- (void)dealloc
{
[statusItem release];
[mainWindow release];
[imageView release];
[screenshot release];
[simulation release];
if (rgb2lin_red_LUT)
free (rgb2lin_red_LUT);
if (rgb2lin_red_LUT)
free (rgb2lin_red_LUT);
if (screenShotBuffer)
free (screenShotBuffer);
if (simulationBuffer)
free (simulationBuffer);
[super dealloc];
}
-(void)computeTritan
{
/* Code for tritan simulation from GIMP 2.2
* This could be optimised for speed.
* Performs tritan color image simulation based on
* Brettel, Vienot and Mollon JOSA 14/10 1997
* L,M,S for lambda=475,485,575,660
*
* Load the LMS anchor-point values for lambda = 475 & 485 nm (for
* protans & deutans) and the LMS values for lambda = 575 & 660 nm
* (for tritans)
*/
// RGBA (OpenGL capture) or ARGB (Quartz capture)?
int alphaFirst = [screenshot bitmapFormat] & NSAlphaFirstBitmapFormat;
double anchor_e0 = 0.05059983 + 0.08585369 + 0.00952420;
double anchor_e1 = 0.01893033 + 0.08925308 + 0.01370054;
double anchor_e2 = 0.00292202 + 0.00975732 + 0.07145979;
double inflection = anchor_e1 / anchor_e0;
/* Set 1: regions where lambda_a=575, set 2: lambda_a=475 */
double a1 = -anchor_e2 * 0.007009;
double b1 = anchor_e2 * 0.0914;
double c1 = anchor_e0 * 0.007009 - anchor_e1 * 0.0914;
double a2 = anchor_e1 * 0.3636 - anchor_e2 * 0.2237;
double b2 = anchor_e2 * 0.1284 - anchor_e0 * 0.3636;
double c2 = anchor_e0 * 0.2237 - anchor_e1 * 0.1284;
int r, c;
NSInteger rows = [screenshot pixelsHigh];
NSInteger cols = [screenshot pixelsWide];
NSInteger bytesPerRow = [screenshot bytesPerRow];
unsigned char *srcBitmapData = [screenshot bitmapData];
if (srcBitmapData == nil)
return;
// recycle the buffer if it has been allocated before and if it's
// the right size.
if (cols != simulationBufferWidth || rows != simulationBufferHeight
|| simulationBuffer == nil) {
if (simulationBuffer != nil)
free (simulationBuffer);
simulationBuffer = malloc(cols * rows * 4);
simulationBufferWidth = cols;
simulationBufferHeight = rows;
}
u_int32_t *dstBitmapData = (u_int32_t*)simulationBuffer;
u_int32_t prevSrc = 0;
u_int32_t color = 0x000000ff;
for (r = 0; r < rows; r++) {
const unsigned char * srcPtr = srcBitmapData;
for (c = 0; c < cols; c++) {
if (*((u_int32_t*)srcPtr) == prevSrc) {
*(dstBitmapData++) = color;
} else {
prevSrc = *((u_int32_t*)srcPtr);
// get linear rgb values in the range 0..2^15-1
double red = rgb2lin_red_LUT[srcPtr[0 + alphaFirst]] / 32767.;
double green = rgb2lin_red_LUT[srcPtr[1 + alphaFirst]] / 32767.;
double blue = rgb2lin_red_LUT[srcPtr[2 + alphaFirst]] / 32767.;
/* Convert to LMS (dot product with transform matrix) */
double redOld = red;
double greenOld = green;
red = redOld * 0.05059983 + greenOld * 0.08585369 + blue * 0.00952420;
green = redOld * 0.01893033 + greenOld * 0.08925308 + blue * 0.01370054;
blue = redOld * 0.00292202 + greenOld * 0.00975732 + blue * 0.07145979;
double tmp = green / red;
/* See which side of the inflection line we fall... */
if (tmp < inflection)
blue = -(a1 * red + b1 * green) / c1;
else
blue = -(a2 * red + b2 * green) / c2;
/* Convert back to RGB (cross product with transform matrix) */
redOld = red;
greenOld = green;
int32_t ired = (int)(255. * (redOld * 30.830854 -
greenOld * 29.832659 + blue * 1.610474));
int32_t igreen = (int)(255. * (-redOld * 6.481468 +
greenOld * 17.715578 - blue * 2.532642));
int32_t iblue = (int)(255. * (-redOld * 0.375690 -
greenOld * 1.199062 + blue * 14.273846));
// convert reduced linear rgb to gamma corrected rgb
if (ired < 0)
ired = 0;
else if (ired > 255)
ired = 255;
else
ired = lin2rgb_LUT[(int)(ired)];
if (igreen < 0)
igreen = 0;
else if (igreen > 255)
igreen = 255;
else
igreen = lin2rgb_LUT[(int)(igreen)];
if (iblue < 0)
iblue = 0;
else if (iblue > 255)
iblue = 255;
else
iblue = lin2rgb_LUT[(int)(iblue)];
#ifdef __BIG_ENDIAN__
color = ired << 24 | igreen << 16 | iblue << 8 | 0x000000ff;
#endif
#ifdef __LITTLE_ENDIAN__
color = ired | igreen << 8 | iblue << 16 | 0xff000000;
#endif
*(dstBitmapData++) = color;
}
srcPtr+=4;
}
srcBitmapData+=bytesPerRow;
}
}
-(void)compute:(long) k1 k2:(long)k2 k3:(long)k3
{
int r, c;
// RGBA (OpenGL capture) or ARGB (Quartz capture)?
int alphaFirst = [screenshot bitmapFormat] & NSAlphaFirstBitmapFormat;
NSInteger rows = [screenshot pixelsHigh];
NSInteger cols = [screenshot pixelsWide];
NSInteger bytesPerRow = [screenshot bytesPerRow];
unsigned char *srcBitmapData = [screenshot bitmapData];
if (srcBitmapData == nil)
return;
// recycle the buffer if it has been allocated before and if it's
// the right size.
if (cols != simulationBufferWidth || rows != simulationBufferHeight
|| simulationBuffer == nil) {
if (simulationBuffer != nil)
free (simulationBuffer);
simulationBuffer = malloc(cols * rows * 4);
simulationBufferWidth = cols;
simulationBufferHeight = rows;
}
u_int32_t *dstBitmapData = (u_int32_t*)simulationBuffer;
u_int32_t prevSrc = 0;
u_int32_t color = 0x000000ff;
for (r = 0; r < rows; r++) {
const unsigned char * srcPtr = srcBitmapData;
for (c = 0; c < cols; c++) {
// this version has been optimized for speed.
// see at the begining of this file for a more readable version.
if (*((u_int32_t*)srcPtr) == prevSrc) {
*(dstBitmapData++) = color; // re-use cached previous value
} else {
prevSrc = *((u_int32_t*)srcPtr);
// get linear rgb values in the range 0..2^15-1
const long r_lin = rgb2lin_red_LUT[srcPtr[0 + alphaFirst]];
const long g_lin = rgb2lin_red_LUT[srcPtr[1 + alphaFirst]];
const long b_lin = rgb2lin_red_LUT[srcPtr[2 + alphaFirst]];
// simulated red and green are identical
// scale the matrix values to 0..2^15 for integer computations of the simulated protan values.
// divide after the computation by 2^15 to rescale.
// also divide by 2^15 and multiply by 2^8 to scale the linear rgb to 0..255
// total division is by 2^15 * 2^15 / 2^8 = 2^22
// shift the bits by 22 places instead of dividing
long r_blind = (k1 * r_lin + k2 * g_lin) >> 22;
long b_blind = (k3 * r_lin - k3 * g_lin + 32768 * b_lin) >> 22;
if (r_blind < 0)
r_blind = 0;
else if (r_blind > 255)
r_blind = 255;
if (b_blind < 0)
b_blind = 0;
else if (b_blind > 255)
b_blind = 255;
// convert reduced linear rgb to gamma corrected rgb
const u_int32_t red = lin2rgb_LUT[r_blind];
const u_int32_t blue = lin2rgb_LUT[b_blind];
#ifdef __BIG_ENDIAN__
color = red << 24 | red << 16 | blue << 8 | 0x000000ff;
#endif
#ifdef __LITTLE_ENDIAN__
color = red | red << 8 | blue << 16 | 0xff000000;
#endif
*(dstBitmapData++) = color;
}
srcPtr+=4;
}
srcBitmapData+=bytesPerRow;
}
}
-(void)computeGrayscale
{
/* Code for grayscale computation, modified from computeTritan.
Based on https://en.wikipedia.org/wiki/Grayscale#Colorimetric_.28luminance-preserving.29_conversion_to_grayscale
Tim van Werkhoven 20140318
*/
// RGBA (OpenGL capture) or ARGB (Quartz capture)?
int alphaFirst = [screenshot bitmapFormat] & NSAlphaFirstBitmapFormat;
// double anchor_e0 = 0.05059983 + 0.08585369 + 0.00952420;
// double anchor_e1 = 0.01893033 + 0.08925308 + 0.01370054;
// double anchor_e2 = 0.00292202 + 0.00975732 + 0.07145979;
// double inflection = anchor_e1 / anchor_e0;
//
// /* Set 1: regions where lambda_a=575, set 2: lambda_a=475 */
// double a1 = -anchor_e2 * 0.007009;
// double b1 = anchor_e2 * 0.0914;
// double c1 = anchor_e0 * 0.007009 - anchor_e1 * 0.0914;
// double a2 = anchor_e1 * 0.3636 - anchor_e2 * 0.2237;
// double b2 = anchor_e2 * 0.1284 - anchor_e0 * 0.3636;
// double c2 = anchor_e0 * 0.2237 - anchor_e1 * 0.1284;
NSInteger r, c;
NSInteger rows = [screenshot pixelsHigh];
NSInteger cols = [screenshot pixelsWide];
NSInteger bytesPerRow = [screenshot bytesPerRow];
unsigned char *srcBitmapData = [screenshot bitmapData];
if (srcBitmapData == nil)
return;
// recycle the buffer if it has been allocated before and if it's
// the right size.
if (cols != simulationBufferWidth || rows != simulationBufferHeight
|| simulationBuffer == nil) {
if (simulationBuffer != nil)
free (simulationBuffer);
simulationBuffer = malloc(cols * rows * 4);
simulationBufferWidth = cols;
simulationBufferHeight = rows;
}
u_int32_t *dstBitmapData = (u_int32_t*)simulationBuffer;
u_int32_t prevSrc = 0;
u_int32_t color = 0x000000ff;
for (r = 0; r < rows; r++) {
const unsigned char * srcPtr = srcBitmapData;
for (c = 0; c < cols; c++) {
if (*((u_int32_t*)srcPtr) == prevSrc) {
*(dstBitmapData++) = color;
} else {
prevSrc = *((u_int32_t*)srcPtr);
// get linear rgb values in the range 0..2^15-1
double red = rgb2lin_red_LUT[srcPtr[0 + alphaFirst]] / 32767.;
double green = rgb2lin_red_LUT[srcPtr[1 + alphaFirst]] / 32767.;
double blue = rgb2lin_red_LUT[srcPtr[2 + alphaFirst]] / 32767.;
/* Convert to grayscale (dot product with transform matrix) */
// Step 1. sRGB color space gamma expansion (not required here?)
// if (red <= 0.04045)
// red = red/12.92;
// else
// red = pow((red+0.055)/1.055, 2.4);
//
// if (green <= 0.04045)
// green = green/12.92;
// else
// green = pow((green+0.055)/1.055, 2.4);
//
// if (blue <= 0.04045)
// blue = blue/12.92;
// else
// blue = pow((blue+0.055)/1.055, 2.4);
// Step 2. luminance calculation
double luminance = 0.2126*red + 0.7152*green + 0.0722*blue;
// Step 3. gamma compression (not required here?)
// if (luminance > 0.0031308)
// luminance = 12.92*luminance;
// else
// luminance = 1.055*pow(luminance, 1.0/2.4) - 0.055;
// Convert to RGB [0, 255]
int32_t ired = (int)(255. * luminance);
int32_t igreen = (int)(255. * luminance);
int32_t iblue = (int)(255. * luminance);
// convert reduced linear rgb to gamma corrected rgb
if (ired < 0)
ired = 0;
else if (ired > 255)
ired = 255;
else
ired = lin2rgb_LUT[(int)(ired)];
if (igreen < 0)
igreen = 0;
else if (igreen > 255)
igreen = 255;
else
igreen = lin2rgb_LUT[(int)(igreen)];
if (iblue < 0)
iblue = 0;
else if (iblue > 255)
iblue = 255;
else
iblue = lin2rgb_LUT[(int)(iblue)];
#ifdef __BIG_ENDIAN__
color = ired << 24 | igreen << 16 | iblue << 8 | 0x000000ff;
#endif
#ifdef __LITTLE_ENDIAN__
color = ired | igreen << 8 | iblue << 16 | 0xff000000;
#endif
*(dstBitmapData++) = color;
}
srcPtr+=4;
}
srcBitmapData+=bytesPerRow;
}
}
-(void)simulate
{
if (screenshot == nil)
return;
switch (simulationID) {
case protan:
[self compute: 3683 k2: 29084 k3: 131];
break;
case deutan:
[self compute: 9591 k2: 23173 k3: -730];
break;
case tritan:
[self computeTritan];
break;
case grayscale:
[self computeGrayscale];
break;
}
NSInteger rows = [screenshot pixelsHigh];
NSInteger cols = [screenshot pixelsWide];
[simulation release];
simulation =
[[NSBitmapImageRep alloc] initWithBitmapDataPlanes: (unsigned char**)&simulationBuffer
pixelsWide: cols
pixelsHigh: rows
bitsPerSample: 8
samplesPerPixel: 4
hasAlpha: YES
isPlanar: NO
colorSpaceName: NSDeviceRGBColorSpace
bytesPerRow: cols * 4
bitsPerPixel: 32];
}
-(void)fillWindow
{
if (simulation == nil)
return;
// create an NSImage and display it in the NSImageView
NSImage *image = [[[NSImage alloc] init] autorelease];
[image addRepresentation:simulation];
//[image setFlipped:NO];
[imageView setImage: image];
}
-(void)fillInfo
{
switch (simulationID) {
case deutan:
[infoView setTitle:DEUTANTEXT];
[infoView setInfo1:DEUTANINFOTEXT];
break;
case protan:
[infoView setTitle:PROTANTEXT];
[infoView setInfo1:PROTANINFOTEXT];
break;
case tritan:
[infoView setTitle:TRITANTEXT];
[infoView setInfo1:TRITANINFOTEXT];
break;
case grayscale:
[infoView setTitle:GRAYSCTEXT];
[infoView setInfo1:GRAYSCINFOTEXT];
break;
}
// build info text consisting of information about (1) how to exit simulation
// (2) drag info panel, and (3) hotkey mapping.
NSMutableString *infoString = [NSMutableString string];
[infoString appendString:INFO_MESSAGE_PART1];
// add info about hotkey mapping
BOOL hasHotKey = gDeutanHotKey != keyNone || gProtanHotKey != keyNone || gTritanHotKey != keyNone || gGrayscHotKey != keyNone;
if (hasHotKey) {
[infoString appendString: @","];
}
if (gDeutanHotKey != keyNone) {
NSString *deutanKeyStr = [self fkey2String:gDeutanHotKey];
[infoString appendString:[NSString stringWithFormat: INFOMESSAGEPRESS_DEUTAN, deutanKeyStr]];
if (gProtanHotKey != keyNone || gTritanHotKey != keyNone || gGrayscHotKey != keyNone) {
[infoString appendString: @","];
}
}
if (gProtanHotKey != keyNone) {
NSString *protanKeyStr = [self fkey2String:gProtanHotKey];
[infoString appendString:[NSString stringWithFormat: INFOMESSAGEPRESS_PROTAN, protanKeyStr]];
if (gTritanHotKey != keyNone || gGrayscHotKey != keyNone) {
[infoString appendString: @","];
}
}
if (gTritanHotKey != keyNone) {
NSString *tritanKeyStr = [self fkey2String:gTritanHotKey];
[infoString appendString:[NSString stringWithFormat: INFOMESSAGEPRESS_TRITAN, tritanKeyStr]];
if (gGrayscHotKey != keyNone) {
[infoString appendString: @","];
}
}
if (gGrayscHotKey != keyNone) {
NSString *grayscKeyStr = [self fkey2String:gGrayscHotKey];
[infoString appendString:[NSString stringWithFormat: INFOMESSAGEPRESS_GRAYSC, grayscKeyStr]];
}
if (hasHotKey) {
[infoString appendString: @" vision"];
}
[infoString appendString: @".\n"];
[infoString appendString: INFO_MESSAGE_PART2];
[infoView setInfo2:infoString];
}
-(int)simulationID
{
return simulationID;
}