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// Copyright (c) 2012 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.h"
#include "base/logging.h"
#include "base/strings/sys_string_conversions.h"
#include "third_party/skia/include/core/SkTypeface.h"
#include "ui/gfx/font.h"
#include "ui/gfx/rect.h"
// Note: This is a temporary Skia-based implementation of the ui/gfx text
// rendering routines for views/aura. It replaces the stale Cocoa-based
// implementation. A future |canvas_skia.cc| implementation will supersede
// this and the other platform-specific implmenentations. Most drawing options,
// such as alignment, multi-line, and line heights are not implemented here.
namespace {
SkTypeface::Style FontTypefaceStyle(const gfx::Font& font) {
int style = 0;
if (font.GetStyle() & gfx::Font::BOLD)
style |= SkTypeface::kBold;
if (font.GetStyle() & gfx::Font::ITALIC)
style |= SkTypeface::kItalic;
return static_cast<SkTypeface::Style>(style);
}
} // namespace
namespace gfx {
// static
void Canvas::SizeStringInt(const base::string16& text,
const gfx::Font& font,
int* width,
int* height,
int line_height,
int flags) {
DLOG_IF(WARNING, line_height != 0) << "Line heights not implemented.";
DLOG_IF(WARNING, flags & Canvas::MULTI_LINE) << "Multi-line not implemented.";
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 Canvas::DrawStringWithShadows(const base::string16& text,
const gfx::Font& font,
SkColor color,
const gfx::Rect& text_bounds,
int line_height,
int flags,
const ShadowValues& shadows) {
DLOG_IF(WARNING, line_height != 0) << "Line heights not implemented.";
DLOG_IF(WARNING, flags & Canvas::MULTI_LINE) << "Multi-line not implemented.";
DLOG_IF(WARNING, !shadows.empty()) << "Text shadows not implemented.";
skia::RefPtr<SkTypeface> typeface = skia::AdoptRef(
SkTypeface::CreateFromName(
font.GetFontName().c_str(), FontTypefaceStyle(font)));
SkPaint paint;
paint.setTypeface(typeface.get());
paint.setColor(color);
canvas_->drawText(text.c_str(),
text.size() * sizeof(base::string16::value_type),
text_bounds.x(),
text_bounds.bottom(),
paint);
}
void Canvas::DrawStringWithHalo(const base::string16& text,
const gfx::Font& font,
SkColor text_color,
SkColor halo_color,
int x, int y, int w, int h,
int flags) {
}
} // namespace gfx
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