1 // Copyright 2014 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 "ash/frame/header_painter_util.h" 6 7 #include <algorithm> 8 9 #include "ui/aura/window.h" 10 #include "ui/compositor/layer.h" 11 #include "ui/compositor/layer_animator.h" 12 #include "ui/gfx/font_list.h" 13 #include "ui/gfx/rect.h" 14 #include "ui/views/view.h" 15 #include "ui/views/widget/widget.h" 16 17 namespace { 18 19 // Radius of the header's top corners when the window is restored. 20 const int kTopCornerRadiusWhenRestored = 2; 21 22 // Distance between left edge of the window and the leftmost view. 23 const int kDefaultLeftViewXInset = 9; 24 25 // Space between the title text and the caption buttons. 26 const int kTitleCaptionButtonSpacing = 5; 27 28 // Space between window icon and title text. 29 const int kTitleIconOffsetX = 5; 30 31 // Space between window edge and title text, when there is no icon. 32 const int kTitleNoIconOffsetX = 8; 33 34 // In the pre-Ash era the web content area had a frame along the left edge, so 35 // user-generated theme images for the new tab page assume they are shifted 36 // right relative to the header. Now that we have removed the left edge frame 37 // we need to copy the theme image for the window header from a few pixels 38 // inset to preserve alignment with the NTP image, or else we'll break a bunch 39 // of existing themes. We do something similar on OS X for the same reason. 40 const int kThemeFrameImageInsetX = 5; 41 42 } // namespace 43 44 namespace ash { 45 46 // static 47 int HeaderPainterUtil::GetTopCornerRadiusWhenRestored() { 48 return kTopCornerRadiusWhenRestored; 49 } 50 51 // static 52 int HeaderPainterUtil::GetDefaultLeftViewXInset() { 53 return kDefaultLeftViewXInset; 54 } 55 56 // static 57 int HeaderPainterUtil::GetThemeBackgroundXInset() { 58 return kThemeFrameImageInsetX; 59 } 60 61 // static 62 gfx::Rect HeaderPainterUtil::GetTitleBounds( 63 const views::View* left_view, 64 const views::View* right_view, 65 const gfx::FontList& title_font_list) { 66 int x = left_view ? left_view->bounds().right() + kTitleIconOffsetX 67 : kTitleNoIconOffsetX; 68 int height = title_font_list.GetHeight(); 69 // Floor when computing the center of |caption_button_container| and when 70 // computing the center of the text. 71 int y = std::max(0, (right_view->height() / 2) - (height / 2)); 72 int width = std::max(0, right_view->x() - kTitleCaptionButtonSpacing - x); 73 return gfx::Rect(x, y, width, height); 74 } 75 76 // static 77 bool HeaderPainterUtil::CanAnimateActivation(views::Widget* widget) { 78 // Do not animate the header if the parent (e.g. 79 // kShellWindowId_DefaultContainer) is already animating. All of the 80 // implementers of HeaderPainter animate activation by continuously painting 81 // during the animation. This gives the parent's animation a slower frame 82 // rate. 83 // TODO(sky): Expose a better way to determine this rather than assuming the 84 // parent is a toplevel container. 85 aura::Window* window = widget->GetNativeWindow(); 86 if (!window->parent()) 87 return true; 88 89 ui::LayerAnimator* parent_layer_animator = 90 window->parent()->layer()->GetAnimator(); 91 return !parent_layer_animator->IsAnimatingProperty( 92 ui::LayerAnimationElement::OPACITY) && 93 !parent_layer_animator->IsAnimatingProperty( 94 ui::LayerAnimationElement::VISIBILITY); 95 } 96 97 } // namespace ash 98
