1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "chrome/browser/ui/views/infobars/infobar_background.h" 6 7 #include "chrome/browser/ui/views/infobars/infobar_view.h" 8 #include "components/infobars/core/infobar.h" 9 #include "third_party/skia/include/effects/SkGradientShader.h" 10 #include "ui/gfx/canvas.h" 11 #include "ui/gfx/color_utils.h" 12 #include "ui/views/view.h" 13 14 InfoBarBackground::InfoBarBackground( 15 infobars::InfoBarDelegate::Type infobar_type) 16 : separator_color_(SK_ColorBLACK), 17 top_color_(infobars::InfoBar::GetTopColor(infobar_type)), 18 bottom_color_(infobars::InfoBar::GetBottomColor(infobar_type)) { 19 SetNativeControlColor( 20 color_utils::AlphaBlend(top_color_, bottom_color_, 128)); 21 } 22 23 InfoBarBackground::~InfoBarBackground() { 24 } 25 26 void InfoBarBackground::Paint(gfx::Canvas* canvas, views::View* view) const { 27 SkPoint gradient_points[2]; 28 gradient_points[0].iset(0, 0); 29 gradient_points[1].iset(0, view->height()); 30 SkColor gradient_colors[2] = { top_color_, bottom_color_ }; 31 skia::RefPtr<SkShader> gradient_shader = skia::AdoptRef( 32 SkGradientShader::CreateLinear(gradient_points, gradient_colors, NULL, 2, 33 SkShader::kClamp_TileMode)); 34 SkPaint paint; 35 paint.setStrokeWidth(SkIntToScalar(infobars::InfoBar::kSeparatorLineHeight)); 36 paint.setStyle(SkPaint::kFill_Style); 37 paint.setStrokeCap(SkPaint::kRound_Cap); 38 paint.setShader(gradient_shader.get()); 39 40 InfoBarView* infobar = static_cast<InfoBarView*>(view); 41 SkCanvas* canvas_skia = canvas->sk_canvas(); 42 canvas_skia->drawPath(infobar->fill_path(), paint); 43 44 paint.setShader(NULL); 45 paint.setColor(SkColorSetA(separator_color_, 46 SkColorGetA(gradient_colors[0]))); 47 paint.setStyle(SkPaint::kStroke_Style); 48 // Anti-alias the path so it doesn't look goofy when the edges are not at 45 49 // degree angles, but don't anti-alias anything else, especially not the fill, 50 // lest we get weird color bleeding problems. 51 paint.setAntiAlias(true); 52 canvas_skia->drawPath(infobar->stroke_path(), paint); 53 paint.setAntiAlias(false); 54 55 // Now draw the separator at the bottom. 56 canvas->FillRect( 57 gfx::Rect(0, view->height() - infobars::InfoBar::kSeparatorLineHeight, 58 view->width(), infobars::InfoBar::kSeparatorLineHeight), 59 separator_color_); 60 } 61
