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/infobars/infobar.h" 8 #include "chrome/browser/ui/views/infobars/infobar_view.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(InfoBarDelegate::Type infobar_type) 15 : separator_color_(SK_ColorBLACK), 16 top_color_(InfoBar::GetTopColor(infobar_type)), 17 bottom_color_(InfoBar::GetBottomColor(infobar_type)) { 18 SetNativeControlColor( 19 color_utils::AlphaBlend(top_color_, bottom_color_, 128)); 20 } 21 22 InfoBarBackground::~InfoBarBackground() { 23 } 24 25 void InfoBarBackground::Paint(gfx::Canvas* canvas, views::View* view) const { 26 SkPoint gradient_points[2]; 27 gradient_points[0].iset(0, 0); 28 gradient_points[1].iset(0, view->height()); 29 SkColor gradient_colors[2] = { top_color_, bottom_color_ }; 30 skia::RefPtr<SkShader> gradient_shader = skia::AdoptRef( 31 SkGradientShader::CreateLinear(gradient_points, gradient_colors, NULL, 2, 32 SkShader::kClamp_TileMode)); 33 SkPaint paint; 34 paint.setStrokeWidth(SkIntToScalar(InfoBar::kSeparatorLineHeight)); 35 paint.setStyle(SkPaint::kFill_Style); 36 paint.setStrokeCap(SkPaint::kRound_Cap); 37 paint.setShader(gradient_shader.get()); 38 39 InfoBarView* infobar = static_cast<InfoBarView*>(view); 40 SkCanvas* canvas_skia = canvas->sk_canvas(); 41 canvas_skia->drawPath(infobar->fill_path(), paint); 42 43 paint.setShader(NULL); 44 paint.setColor(SkColorSetA(separator_color_, 45 SkColorGetA(gradient_colors[0]))); 46 paint.setStyle(SkPaint::kStroke_Style); 47 // Anti-alias the path so it doesn't look goofy when the edges are not at 45 48 // degree angles, but don't anti-alias anything else, especially not the fill, 49 // lest we get weird color bleeding problems. 50 paint.setAntiAlias(true); 51 canvas_skia->drawPath(infobar->stroke_path(), paint); 52 paint.setAntiAlias(false); 53 54 // Now draw the separator at the bottom. 55 canvas->FillRect(gfx::Rect(0, view->height() - InfoBar::kSeparatorLineHeight, 56 view->width(), InfoBar::kSeparatorLineHeight), 57 separator_color_); 58 } 59
