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// Copyright (c) 2010 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.
#import <Cocoa/Cocoa.h>
#include "ui/gfx/canvas_skia.h"
#include "base/mac/mac_util.h"
#include "base/mac/scoped_cftyperef.h"
#include "base/sys_string_conversions.h"
#include "third_party/skia/include/core/SkShader.h"
#include "ui/gfx/font.h"
#include "ui/gfx/rect.h"
namespace gfx {
CanvasSkia::CanvasSkia(int width, int height, bool is_opaque)
: skia::PlatformCanvas(width, height, is_opaque) {
}
CanvasSkia::CanvasSkia() : skia::PlatformCanvas() {
}
CanvasSkia::~CanvasSkia() {
}
// static
void CanvasSkia::SizeStringInt(const string16& text,
const gfx::Font& font,
int* width, int* height,
int flags) {
NSFont* native_font = font.GetNativeFont();
NSString* ns_string = base::SysUTF16ToNSString(text);
NSDictionary* attributes =
[NSDictionary dictionaryWithObject:native_font
forKey:NSFontAttributeName];
NSSize string_size = [ns_string sizeWithAttributes:attributes];
*width = string_size.width;
*height = font.GetHeight();
}
void CanvasSkia::DrawStringInt(const string16& text,
const gfx::Font& font,
const SkColor& color,
int x, int y, int w, int h,
int flags) {
if (!IntersectsClipRectInt(x, y, w, h))
return;
CGContextRef context = beginPlatformPaint();
CGContextSaveGState(context);
NSColor* ns_color = [NSColor colorWithDeviceRed:SkColorGetR(color) / 255.0
green:SkColorGetG(color) / 255.0
blue:SkColorGetB(color) / 255.0
alpha:SkColorGetA(color) / 255.0];
NSMutableParagraphStyle *ns_style =
[[[NSParagraphStyle alloc] init] autorelease];
if (flags & TEXT_ALIGN_CENTER)
[ns_style setAlignment:NSCenterTextAlignment];
// TODO(awalker): Implement the rest of the Canvas text flags
NSDictionary* attributes =
[NSDictionary dictionaryWithObjectsAndKeys:
font.GetNativeFont(), NSFontAttributeName,
ns_color, NSForegroundColorAttributeName,
ns_style, NSParagraphStyleAttributeName,
nil];
NSAttributedString* ns_string =
[[[NSAttributedString alloc] initWithString:base::SysUTF16ToNSString(text)
attributes:attributes] autorelease];
base::mac::ScopedCFTypeRef<CTFramesetterRef> framesetter(
CTFramesetterCreateWithAttributedString(
base::mac::NSToCFCast(ns_string)));
CGRect text_bounds = CGRectMake(x, y, w, h);
CGMutablePathRef path = CGPathCreateMutable();
CGPathAddRect(path, NULL, text_bounds);
base::mac::ScopedCFTypeRef<CTFrameRef> frame(
CTFramesetterCreateFrame(framesetter, CFRangeMake(0, 0), path, NULL));
CTFrameDraw(frame, context);
CGContextRestoreGState(context);
endPlatformPaint();
}
ui::TextureID CanvasSkia::GetTextureID() {
// TODO(wjmaclean)
return 0;
}
} // namespace gfx
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