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// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/browser_theme_provider.h"
#import <Cocoa/Cocoa.h>
#include "app/gfx/color_utils.h"
#include "base/logging.h"
#include "chrome/browser/browser_theme_pack.h"
#include "skia/ext/skia_utils_mac.h"
NSString* const kBrowserThemeDidChangeNotification =
@"BrowserThemeDidChangeNotification";
namespace {
void HSLToHSB(const color_utils::HSL& hsl, CGFloat* h, CGFloat* s, CGFloat* b) {
SkColor color = color_utils::HSLToSkColor(hsl, 255); // alpha doesn't matter
SkScalar hsv[3];
SkColorToHSV(color, hsv);
*h = SkScalarToDouble(hsv[0]) / 360.0;
*s = SkScalarToDouble(hsv[1]);
*b = SkScalarToDouble(hsv[2]);
}
}
NSImage* BrowserThemeProvider::GetNSImageNamed(int id,
bool allow_default) const {
DCHECK(CalledOnValidThread());
if (!allow_default && !HasCustomImage(id))
return nil;
// Check to see if we already have the image in the cache.
NSImageMap::const_iterator nsimage_iter = nsimage_cache_.find(id);
if (nsimage_iter != nsimage_cache_.end())
return nsimage_iter->second;
// Why don't we load the file directly into the image instead of the whole
// SkBitmap > native conversion?
// - For consistency with other platforms.
// - To get the generated tinted images.
SkBitmap* bitmap = GetBitmapNamed(id);
NSImage* nsimage = gfx::SkBitmapToNSImage(*bitmap);
// We loaded successfully. Cache the image.
if (nsimage) {
nsimage_cache_[id] = [nsimage retain];
return nsimage;
}
// We failed to retrieve the bitmap, show a debugging red square.
LOG(WARNING) << "Unable to load NSImage with id " << id;
NOTREACHED(); // Want to assert in debug mode.
static NSImage* empty_image = NULL;
if (!empty_image) {
// The placeholder image is bright red so people notice the problem. This
// image will be leaked, but this code should never be hit.
NSRect image_rect = NSMakeRect(0, 0, 32, 32);
empty_image = [[NSImage alloc] initWithSize:image_rect.size];
[empty_image lockFocus];
[[NSColor redColor] set];
NSRectFill(image_rect);
[empty_image unlockFocus];
}
return empty_image;
}
NSColor* BrowserThemeProvider::GetNSColor(int id,
bool allow_default) const {
DCHECK(CalledOnValidThread());
// Check to see if we already have the color in the cache.
NSColorMap::const_iterator nscolor_iter = nscolor_cache_.find(id);
if (nscolor_iter != nscolor_cache_.end()) {
bool cached_is_default = nscolor_iter->second.second;
if (!cached_is_default || allow_default)
return nscolor_iter->second.first;
}
bool is_default = false;
SkColor sk_color;
if (theme_pack_.get() && theme_pack_->GetColor(id, &sk_color)) {
is_default = false;
} else {
is_default = true;
sk_color = GetDefaultColor(id);
}
if (is_default && !allow_default)
return nil;
NSColor* color = [NSColor
colorWithCalibratedRed:SkColorGetR(sk_color)/255.0
green:SkColorGetG(sk_color)/255.0
blue:SkColorGetB(sk_color)/255.0
alpha:SkColorGetA(sk_color)/255.0];
// We loaded successfully. Cache the color.
if (color) {
nscolor_cache_[id] = std::make_pair([color retain], is_default);
return color;
}
return nil;
}
NSColor* BrowserThemeProvider::GetNSColorTint(int id,
bool allow_default) const {
DCHECK(CalledOnValidThread());
// Check to see if we already have the color in the cache.
NSColorMap::const_iterator nscolor_iter = nscolor_cache_.find(id);
if (nscolor_iter != nscolor_cache_.end()) {
bool cached_is_default = nscolor_iter->second.second;
if (!cached_is_default || allow_default)
return nscolor_iter->second.first;
}
bool is_default = false;
color_utils::HSL tint;
if (theme_pack_.get() && theme_pack_->GetTint(id, &tint)) {
is_default = false;
} else {
is_default = true;
tint = GetDefaultTint(id);
}
if (is_default && !allow_default)
return nil;
CGFloat hue, saturation, brightness;
HSLToHSB(tint, &hue, &saturation, &brightness);
NSColor* tint_color = [NSColor colorWithCalibratedHue:hue
saturation:saturation
brightness:brightness
alpha:1.0];
// We loaded successfully. Cache the color.
if (tint_color) {
nscolor_cache_[id] = std::make_pair([tint_color retain], is_default);
return tint_color;
}
return nil;
}
// Let all the browser views know that themes have changed in a platform way.
void BrowserThemeProvider::NotifyPlatformThemeChanged() {
NSNotificationCenter* defaultCenter = [NSNotificationCenter defaultCenter];
[defaultCenter postNotificationName:kBrowserThemeDidChangeNotification
object:[NSValue valueWithPointer:this]];
}
void BrowserThemeProvider::FreePlatformCaches() {
DCHECK(CalledOnValidThread());
// Free images.
for (NSImageMap::iterator i = nsimage_cache_.begin();
i != nsimage_cache_.end(); i++) {
[i->second release];
}
nsimage_cache_.clear();
// Free colors.
for (NSColorMap::iterator i = nscolor_cache_.begin();
i != nscolor_cache_.end(); i++) {
[i->second.first release];
}
nscolor_cache_.clear();
}
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