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// Copyright (c) 2011 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/ui/views/infobars/infobar_background.h"
#include "chrome/browser/infobars/infobar.h"
#include "chrome/browser/ui/views/infobars/infobar_view.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/canvas_skia_paint.h"
#include "ui/gfx/color_utils.h"
#include "third_party/skia/include/effects/SkGradientShader.h"
#include "views/view.h"
InfoBarBackground::InfoBarBackground(InfoBarDelegate::Type infobar_type)
: separator_color_(SK_ColorBLACK),
top_color_(GetInfoBarTopColor(infobar_type)),
bottom_color_(GetInfoBarBottomColor(infobar_type)) {
SetNativeControlColor(
color_utils::AlphaBlend(top_color_, bottom_color_, 128));
}
InfoBarBackground::~InfoBarBackground() {
}
void InfoBarBackground::Paint(gfx::Canvas* canvas, views::View* view) const {
SkPoint gradient_points[2] = {
{SkIntToScalar(0), SkIntToScalar(0)},
{SkIntToScalar(0), SkIntToScalar(view->height())}
};
SkColor gradient_colors[2] = {
top_color_,
bottom_color_
};
SkShader* gradient_shader = SkGradientShader::CreateLinear(
gradient_points, gradient_colors, NULL, 2, SkShader::kClamp_TileMode);
SkPaint paint;
paint.setStrokeWidth(SkIntToScalar(InfoBar::kSeparatorLineHeight));
paint.setStyle(SkPaint::kFill_Style);
paint.setStrokeCap(SkPaint::kRound_Cap);
paint.setShader(gradient_shader);
gradient_shader->unref();
InfoBarView* infobar = static_cast<InfoBarView*>(view);
SkCanvas* canvas_skia = canvas->GetSkCanvas();
canvas_skia->drawPath(infobar->fill_path(), paint);
paint.setShader(NULL);
paint.setColor(SkColorSetA(separator_color_,
SkColorGetA(gradient_colors[0])));
paint.setStyle(SkPaint::kStroke_Style);
// Anti-alias the path so it doesn't look goofy when the edges are not at 45
// degree angles, but don't anti-alias anything else, especially not the fill,
// lest we get weird color bleeding problems.
paint.setAntiAlias(true);
canvas_skia->drawPath(infobar->stroke_path(), paint);
paint.setAntiAlias(false);
// Now draw the separator at the bottom.
canvas->FillRectInt(separator_color_, 0,
view->height() - InfoBar::kSeparatorLineHeight,
view->width(), InfoBar::kSeparatorLineHeight);
}
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