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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#import <Cocoa/Cocoa.h>
#include "nsColorPicker.h"
#include "nsCocoaUtils.h"
#include "nsThreadUtils.h"
using namespace mozilla;
static unsigned int
HexStrToInt(NSString* str)
{
unsigned int result = 0;
for (unsigned int i = 0; i < [str length]; ++i) {
char c = [str characterAtIndex:i];
result *= 16;
if (c >= '0' && c <= '9') {
result += c - '0';
} else if (c >= 'A' && c <= 'F') {
result += 10 + (c - 'A');
} else {
result += 10 + (c - 'a');
}
}
return result;
}
@interface NSColorPanelWrapper : NSObject <NSWindowDelegate>
{
NSColorPanel* mColorPanel;
nsColorPicker* mColorPicker;
}
- (id)initWithPicker:(nsColorPicker*)aPicker;
- (void)open:(NSColor*)aInitialColor title:(NSString*)aTitle;
- (void)retarget:(nsColorPicker*)aPicker;
- (void)colorChanged:(NSColorPanel*)aPanel;
@end
@implementation NSColorPanelWrapper
- (id)initWithPicker:(nsColorPicker*)aPicker
{
mColorPicker = aPicker;
mColorPanel = [NSColorPanel sharedColorPanel];
self = [super init];
return self;
}
- (void)open:(NSColor*)aInitialColor title:(NSString*)aTitle
{
[mColorPanel setTarget:self];
[mColorPanel setAction:@selector(colorChanged:)];
[mColorPanel setDelegate:self];
[mColorPanel setTitle:aTitle];
[mColorPanel setColor:aInitialColor];
[mColorPanel makeKeyAndOrderFront:nil];
}
- (void)colorChanged:(NSColorPanel*)aPanel
{
mColorPicker->Update([mColorPanel color]);
}
- (void)windowWillClose:(NSNotification*)aNotification
{
mColorPicker->Done();
}
- (void)retarget:(nsColorPicker*)aPicker
{
mColorPicker->DoneWithRetarget();
mColorPicker = aPicker;
}
- (void)dealloc
{
[mColorPanel setTarget:nil];
[mColorPanel setAction:nil];
[mColorPanel setDelegate:nil];
mColorPanel = nil;
mColorPicker = nullptr;
[super dealloc];
}
@end
NS_IMPL_ISUPPORTS(nsColorPicker, nsIColorPicker)
NSColorPanelWrapper* nsColorPicker::sColorPanelWrapper = nullptr;
nsColorPicker::~nsColorPicker()
{
}
NS_IMETHODIMP
nsColorPicker::Init(mozIDOMWindowProxy* aParent, const nsAString& aTitle,
const nsAString& aInitialColor)
{
MOZ_ASSERT(NS_IsMainThread(),
"Color pickers can only be opened from main thread currently");
mTitle = aTitle;
mColor = aInitialColor;
if (sColorPanelWrapper) {
// Update current wrapper to target the new input instead
[sColorPanelWrapper retarget:this];
} else {
// Create a brand new color panel wrapper
sColorPanelWrapper = [[NSColorPanelWrapper alloc] initWithPicker:this];
}
return NS_OK;
}
/* static */ NSColor*
nsColorPicker::GetNSColorFromHexString(const nsAString& aColor)
{
NSString* str = nsCocoaUtils::ToNSString(aColor);
double red = HexStrToInt([str substringWithRange:NSMakeRange(1, 2)]) / 255.0;
double green = HexStrToInt([str substringWithRange:NSMakeRange(3, 2)]) / 255.0;
double blue = HexStrToInt([str substringWithRange:NSMakeRange(5, 2)]) / 255.0;
return [NSColor colorWithDeviceRed: red green: green blue: blue alpha: 1.0];
}
/* static */ void
nsColorPicker::GetHexStringFromNSColor(NSColor* aColor, nsAString& aResult)
{
CGFloat redFloat, greenFloat, blueFloat;
NSColor* color = aColor;
@try {
[color getRed:&redFloat green:&greenFloat blue:&blueFloat alpha: nil];
} @catch (NSException* e) {
color = [color colorUsingColorSpace:[NSColorSpace genericRGBColorSpace]];
[color getRed:&redFloat green:&greenFloat blue:&blueFloat alpha: nil];
}
nsCocoaUtils::GetStringForNSString([NSString stringWithFormat:@"#%02x%02x%02x",
(int)(redFloat * 255),
(int)(greenFloat * 255),
(int)(blueFloat * 255)],
aResult);
}
NS_IMETHODIMP
nsColorPicker::Open(nsIColorPickerShownCallback* aCallback)
{
MOZ_ASSERT(aCallback);
mCallback = aCallback;
[sColorPanelWrapper open:GetNSColorFromHexString(mColor)
title:nsCocoaUtils::ToNSString(mTitle)];
NS_ADDREF_THIS();
return NS_OK;
}
void
nsColorPicker::Update(NSColor* aColor)
{
GetHexStringFromNSColor(aColor, mColor);
mCallback->Update(mColor);
}
void
nsColorPicker::DoneWithRetarget()
{
mCallback->Done(EmptyString());
mCallback = nullptr;
NS_RELEASE_THIS();
}
void
nsColorPicker::Done()
{
[sColorPanelWrapper release];
sColorPanelWrapper = nullptr;
DoneWithRetarget();
}
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