// Copyright (c) 2010 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 "views/window/custom_frame_view.h" #include "app/l10n_util.h" #include "app/resource_bundle.h" #include "app/theme_provider.h" #if defined(OS_WIN) #include "app/win_util.h" #include "base/win_util.h" #endif #include "gfx/canvas.h" #include "gfx/font.h" #include "gfx/path.h" #include "grit/app_resources.h" #include "grit/app_strings.h" #include "views/window/client_view.h" #include "views/window/window_shape.h" #if defined(OS_LINUX) #include "views/window/hit_test.h" #endif #include "views/window/window_delegate.h" namespace views { // static gfx::Font* CustomFrameView::title_font_ = NULL; namespace { // The frame border is only visible in restored mode and is hardcoded to 4 px on // each side regardless of the system window border size. const int kFrameBorderThickness = 4; // Various edges of the frame border have a 1 px shadow along their edges; in a // few cases we shift elements based on this amount for visual appeal. const int kFrameShadowThickness = 1; // While resize areas on Windows are normally the same size as the window // borders, our top area is shrunk by 1 px to make it easier to move the window // around with our thinner top grabbable strip. (Incidentally, our side and // bottom resize areas don't match the frame border thickness either -- they // span the whole nonclient area, so there's no "dead zone" for the mouse.) const int kTopResizeAdjust = 1; // In the window corners, the resize areas don't actually expand bigger, but the // 16 px at the end of each edge triggers diagonal resizing. const int kResizeAreaCornerSize = 16; // The titlebar never shrinks too short to show the caption button plus some // padding below it. const int kCaptionButtonHeightWithPadding = 19; // The titlebar has a 2 px 3D edge along the top and bottom. const int kTitlebarTopAndBottomEdgeThickness = 2; // The icon is inset 2 px from the left frame border. const int kIconLeftSpacing = 2; // The icon never shrinks below 16 px on a side. const int kIconMinimumSize = 16; // There is a 4 px gap between the icon and the title text. const int kIconTitleSpacing = 4; // There is a 5 px gap between the title text and the caption buttons. const int kTitleCaptionSpacing = 5; } /////////////////////////////////////////////////////////////////////////////// // CustomFrameView, public: CustomFrameView::CustomFrameView(Window* frame) : NonClientFrameView(), ALLOW_THIS_IN_INITIALIZER_LIST(close_button_(new ImageButton(this))), ALLOW_THIS_IN_INITIALIZER_LIST(restore_button_(new ImageButton(this))), ALLOW_THIS_IN_INITIALIZER_LIST(maximize_button_(new ImageButton(this))), ALLOW_THIS_IN_INITIALIZER_LIST(minimize_button_(new ImageButton(this))), window_icon_(NULL), should_show_minmax_buttons_(false), should_show_client_edge_(false), frame_(frame) { InitClass(); ResourceBundle& rb = ResourceBundle::GetSharedInstance(); close_button_->SetAccessibleName(l10n_util::GetString(IDS_APP_ACCNAME_CLOSE)); // Close button images will be set in LayoutWindowControls(). AddChildView(close_button_); restore_button_->SetAccessibleName( l10n_util::GetString(IDS_APP_ACCNAME_RESTORE)); restore_button_->SetImage(CustomButton::BS_NORMAL, rb.GetBitmapNamed(IDR_RESTORE)); restore_button_->SetImage(CustomButton::BS_HOT, rb.GetBitmapNamed(IDR_RESTORE_H)); restore_button_->SetImage(CustomButton::BS_PUSHED, rb.GetBitmapNamed(IDR_RESTORE_P)); AddChildView(restore_button_); maximize_button_->SetAccessibleName( l10n_util::GetString(IDS_APP_ACCNAME_MAXIMIZE)); maximize_button_->SetImage(CustomButton::BS_NORMAL, rb.GetBitmapNamed(IDR_MAXIMIZE)); maximize_button_->SetImage(CustomButton::BS_HOT, rb.GetBitmapNamed(IDR_MAXIMIZE_H)); maximize_button_->SetImage(CustomButton::BS_PUSHED, rb.GetBitmapNamed(IDR_MAXIMIZE_P)); AddChildView(maximize_button_); minimize_button_->SetAccessibleName( l10n_util::GetString(IDS_APP_ACCNAME_MINIMIZE)); minimize_button_->SetImage(CustomButton::BS_NORMAL, rb.GetBitmapNamed(IDR_MINIMIZE)); minimize_button_->SetImage(CustomButton::BS_HOT, rb.GetBitmapNamed(IDR_MINIMIZE_H)); minimize_button_->SetImage(CustomButton::BS_PUSHED, rb.GetBitmapNamed(IDR_MINIMIZE_P)); AddChildView(minimize_button_); views::WindowDelegate* d = frame_->GetDelegate(); should_show_minmax_buttons_ = d->CanMaximize(); should_show_client_edge_ = d->ShouldShowClientEdge(); if (d->ShouldShowWindowIcon()) { window_icon_ = new ImageButton(this); AddChildView(window_icon_); } } CustomFrameView::~CustomFrameView() { } /////////////////////////////////////////////////////////////////////////////// // CustomFrameView, NonClientFrameView implementation: gfx::Rect CustomFrameView::GetBoundsForClientView() const { return client_view_bounds_; } gfx::Rect CustomFrameView::GetWindowBoundsForClientBounds( const gfx::Rect& client_bounds) const { int top_height = NonClientTopBorderHeight(); int border_thickness = NonClientBorderThickness(); return gfx::Rect(std::max(0, client_bounds.x() - border_thickness), std::max(0, client_bounds.y() - top_height), client_bounds.width() + (2 * border_thickness), client_bounds.height() + top_height + border_thickness); } int CustomFrameView::NonClientHitTest(const gfx::Point& point) { // Sanity check. if (!bounds().Contains(point)) return HTNOWHERE; int frame_component = frame_->GetClientView()->NonClientHitTest(point); // See if we're in the sysmenu region. (We check the ClientView first to be // consistent with OpaqueBrowserFrameView; it's not really necessary here.) gfx::Rect sysmenu_rect(IconBounds()); // In maximized mode we extend the rect to the screen corner to take advantage // of Fitts' Law. if (frame_->IsMaximized()) sysmenu_rect.SetRect(0, 0, sysmenu_rect.right(), sysmenu_rect.bottom()); sysmenu_rect.set_x(MirroredLeftPointForRect(sysmenu_rect)); if (sysmenu_rect.Contains(point)) return (frame_component == HTCLIENT) ? HTCLIENT : HTSYSMENU; if (frame_component != HTNOWHERE) return frame_component; // Then see if the point is within any of the window controls. if (close_button_->GetBounds(APPLY_MIRRORING_TRANSFORMATION).Contains(point)) return HTCLOSE; if (restore_button_->GetBounds(APPLY_MIRRORING_TRANSFORMATION).Contains( point)) return HTMAXBUTTON; if (maximize_button_->GetBounds(APPLY_MIRRORING_TRANSFORMATION).Contains( point)) return HTMAXBUTTON; if (minimize_button_->GetBounds(APPLY_MIRRORING_TRANSFORMATION).Contains( point)) return HTMINBUTTON; if (window_icon_ && window_icon_->GetBounds(APPLY_MIRRORING_TRANSFORMATION).Contains(point)) return HTSYSMENU; int window_component = GetHTComponentForFrame(point, FrameBorderThickness(), NonClientBorderThickness(), kResizeAreaCornerSize, kResizeAreaCornerSize, frame_->GetDelegate()->CanResize()); // Fall back to the caption if no other component matches. return (window_component == HTNOWHERE) ? HTCAPTION : window_component; } void CustomFrameView::GetWindowMask(const gfx::Size& size, gfx::Path* window_mask) { DCHECK(window_mask); if (frame_->IsMaximized()) return; views::GetDefaultWindowMask(size, window_mask); } void CustomFrameView::EnableClose(bool enable) { close_button_->SetEnabled(enable); } void CustomFrameView::ResetWindowControls() { restore_button_->SetState(CustomButton::BS_NORMAL); minimize_button_->SetState(CustomButton::BS_NORMAL); maximize_button_->SetState(CustomButton::BS_NORMAL); // The close button isn't affected by this constraint. } /////////////////////////////////////////////////////////////////////////////// // CustomFrameView, View overrides: void CustomFrameView::Paint(gfx::Canvas* canvas) { if (frame_->IsMaximized()) PaintMaximizedFrameBorder(canvas); else PaintRestoredFrameBorder(canvas); PaintTitleBar(canvas); if (ShouldShowClientEdge()) PaintRestoredClientEdge(canvas); } void CustomFrameView::Layout() { LayoutWindowControls(); LayoutTitleBar(); LayoutClientView(); } gfx::Size CustomFrameView::GetPreferredSize() { gfx::Size pref = frame_->GetClientView()->GetPreferredSize(); gfx::Rect bounds(0, 0, pref.width(), pref.height()); return frame_->GetNonClientView()->GetWindowBoundsForClientBounds( bounds).size(); } /////////////////////////////////////////////////////////////////////////////// // CustomFrameView, ButtonListener implementation: void CustomFrameView::ButtonPressed(Button* sender, const views::Event& event) { if (sender == close_button_) frame_->Close(); else if (sender == minimize_button_) frame_->Minimize(); else if (sender == maximize_button_) frame_->Maximize(); else if (sender == restore_button_) frame_->Restore(); } /////////////////////////////////////////////////////////////////////////////// // CustomFrameView, private: int CustomFrameView::FrameBorderThickness() const { return frame_->IsMaximized() ? 0 : kFrameBorderThickness; } int CustomFrameView::NonClientBorderThickness() const { // In maximized mode, we don't show a client edge. return FrameBorderThickness() + (ShouldShowClientEdge() ? kClientEdgeThickness : 0); } int CustomFrameView::NonClientTopBorderHeight() const { return std::max(FrameBorderThickness() + IconSize(), CaptionButtonY() + kCaptionButtonHeightWithPadding) + TitlebarBottomThickness(); } int CustomFrameView::CaptionButtonY() const { // Maximized buttons start at window top so that even if their images aren't // drawn flush with the screen edge, they still obey Fitts' Law. return frame_->IsMaximized() ? FrameBorderThickness() : kFrameShadowThickness; } int CustomFrameView::TitlebarBottomThickness() const { return kTitlebarTopAndBottomEdgeThickness + (ShouldShowClientEdge() ? kClientEdgeThickness : 0); } int CustomFrameView::IconSize() const { #if defined(OS_WIN) // This metric scales up if either the titlebar height or the titlebar font // size are increased. return GetSystemMetrics(SM_CYSMICON); #else return std::max(title_font_->height(), kIconMinimumSize); #endif } bool CustomFrameView::ShouldShowClientEdge() const { return should_show_client_edge_ && !frame_->IsMaximized(); } gfx::Rect CustomFrameView::IconBounds() const { int size = IconSize(); int frame_thickness = FrameBorderThickness(); // Our frame border has a different "3D look" than Windows'. Theirs has a // more complex gradient on the top that they push their icon/title below; // then the maximized window cuts this off and the icon/title are centered // in the remaining space. Because the apparent shape of our border is // simpler, using the same positioning makes things look slightly uncentered // with restored windows, so when the window is restored, instead of // calculating the remaining space from below the frame border, we calculate // from below the 3D edge. int unavailable_px_at_top = frame_->IsMaximized() ? frame_thickness : kTitlebarTopAndBottomEdgeThickness; // When the icon is shorter than the minimum space we reserve for the caption // button, we vertically center it. We want to bias rounding to put extra // space above the icon, since the 3D edge (+ client edge, for restored // windows) below looks (to the eye) more like additional space than does the // 3D edge (or nothing at all, for maximized windows) above; hence the +1. int y = unavailable_px_at_top + (NonClientTopBorderHeight() - unavailable_px_at_top - size - TitlebarBottomThickness() + 1) / 2; return gfx::Rect(frame_thickness + kIconLeftSpacing, y, size, size); } void CustomFrameView::PaintRestoredFrameBorder(gfx::Canvas* canvas) { // Window frame mode. ResourceBundle& rb = ResourceBundle::GetSharedInstance(); SkBitmap* frame_image; SkColor frame_color; if (frame_->IsActive()) { frame_image = rb.GetBitmapNamed(IDR_FRAME); frame_color = ResourceBundle::frame_color; } else { frame_image = rb.GetBitmapNamed(IDR_FRAME_INACTIVE); frame_color = ResourceBundle::frame_color_inactive; } SkBitmap* top_left_corner = rb.GetBitmapNamed(IDR_WINDOW_TOP_LEFT_CORNER); SkBitmap* top_right_corner = rb.GetBitmapNamed(IDR_WINDOW_TOP_RIGHT_CORNER); SkBitmap* top_edge = rb.GetBitmapNamed(IDR_WINDOW_TOP_CENTER); SkBitmap* right_edge = rb.GetBitmapNamed(IDR_WINDOW_RIGHT_SIDE); SkBitmap* left_edge = rb.GetBitmapNamed(IDR_WINDOW_LEFT_SIDE); SkBitmap* bottom_left_corner = rb.GetBitmapNamed(IDR_WINDOW_BOTTOM_LEFT_CORNER); SkBitmap* bottom_right_corner = rb.GetBitmapNamed(IDR_WINDOW_BOTTOM_RIGHT_CORNER); SkBitmap* bottom_edge = rb.GetBitmapNamed(IDR_WINDOW_BOTTOM_CENTER); // Fill with the frame color first so we have a constant background for // areas not covered by the theme image. canvas->FillRectInt(frame_color, 0, 0, width(), frame_image->height()); // Now fill down the sides. canvas->FillRectInt(frame_color, 0, frame_image->height(), left_edge->width(), height() - frame_image->height()); canvas->FillRectInt(frame_color, width() - right_edge->width(), frame_image->height(), right_edge->width(), height() - frame_image->height()); // Now fill the bottom area. canvas->FillRectInt(frame_color, left_edge->width(), height() - bottom_edge->height(), width() - left_edge->width() - right_edge->width(), bottom_edge->height()); // Draw the theme frame. canvas->TileImageInt(*frame_image, 0, 0, width(), frame_image->height()); // Top. canvas->DrawBitmapInt(*top_left_corner, 0, 0); canvas->TileImageInt(*top_edge, top_left_corner->width(), 0, width() - top_right_corner->width(), top_edge->height()); canvas->DrawBitmapInt(*top_right_corner, width() - top_right_corner->width(), 0); // Right. canvas->TileImageInt(*right_edge, width() - right_edge->width(), top_right_corner->height(), right_edge->width(), height() - top_right_corner->height() - bottom_right_corner->height()); // Bottom. canvas->DrawBitmapInt(*bottom_right_corner, width() - bottom_right_corner->width(), height() - bottom_right_corner->height()); canvas->TileImageInt(*bottom_edge, bottom_left_corner->width(), height() - bottom_edge->height(), width() - bottom_left_corner->width() - bottom_right_corner->width(), bottom_edge->height()); canvas->DrawBitmapInt(*bottom_left_corner, 0, height() - bottom_left_corner->height()); // Left. canvas->TileImageInt(*left_edge, 0, top_left_corner->height(), left_edge->width(), height() - top_left_corner->height() - bottom_left_corner->height()); } void CustomFrameView::PaintMaximizedFrameBorder(gfx::Canvas* canvas) { ResourceBundle& rb = ResourceBundle::GetSharedInstance(); SkBitmap* frame_image = rb.GetBitmapNamed(frame_->IsActive() ? IDR_FRAME : IDR_FRAME_INACTIVE); canvas->TileImageInt(*frame_image, 0, FrameBorderThickness(), width(), frame_image->height()); // The bottom of the titlebar actually comes from the top of the Client Edge // graphic, with the actual client edge clipped off the bottom. SkBitmap* titlebar_bottom = rb.GetBitmapNamed(IDR_APP_TOP_CENTER); int edge_height = titlebar_bottom->height() - ShouldShowClientEdge() ? kClientEdgeThickness : 0; canvas->TileImageInt(*titlebar_bottom, 0, frame_->GetClientView()->y() - edge_height, width(), edge_height); } void CustomFrameView::PaintTitleBar(gfx::Canvas* canvas) { WindowDelegate* d = frame_->GetDelegate(); // It seems like in some conditions we can be asked to paint after the window // that contains us is WM_DESTROYed. At this point, our delegate is NULL. The // correct long term fix may be to shut down the RootView in WM_DESTROY. if (!d) return; canvas->DrawStringInt(d->GetWindowTitle(), *title_font_, SK_ColorWHITE, MirroredLeftPointForRect(title_bounds_), title_bounds_.y(), title_bounds_.width(), title_bounds_.height()); } void CustomFrameView::PaintRestoredClientEdge(gfx::Canvas* canvas) { gfx::Rect client_area_bounds = frame_->GetClientView()->bounds(); int client_area_top = client_area_bounds.y(); ResourceBundle& rb = ResourceBundle::GetSharedInstance(); SkBitmap* top_left = rb.GetBitmapNamed(IDR_APP_TOP_LEFT); SkBitmap* top = rb.GetBitmapNamed(IDR_APP_TOP_CENTER); SkBitmap* top_right = rb.GetBitmapNamed(IDR_APP_TOP_RIGHT); SkBitmap* right = rb.GetBitmapNamed(IDR_CONTENT_RIGHT_SIDE); SkBitmap* bottom_right = rb.GetBitmapNamed(IDR_CONTENT_BOTTOM_RIGHT_CORNER); SkBitmap* bottom = rb.GetBitmapNamed(IDR_CONTENT_BOTTOM_CENTER); SkBitmap* bottom_left = rb.GetBitmapNamed(IDR_CONTENT_BOTTOM_LEFT_CORNER); SkBitmap* left = rb.GetBitmapNamed(IDR_CONTENT_LEFT_SIDE); // Top. int top_edge_y = client_area_top - top->height(); canvas->DrawBitmapInt(*top_left, client_area_bounds.x() - top_left->width(), top_edge_y); canvas->TileImageInt(*top, client_area_bounds.x(), top_edge_y, client_area_bounds.width(), top->height()); canvas->DrawBitmapInt(*top_right, client_area_bounds.right(), top_edge_y); // Right. int client_area_bottom = std::max(client_area_top, client_area_bounds.bottom()); int client_area_height = client_area_bottom - client_area_top; canvas->TileImageInt(*right, client_area_bounds.right(), client_area_top, right->width(), client_area_height); // Bottom. canvas->DrawBitmapInt(*bottom_right, client_area_bounds.right(), client_area_bottom); canvas->TileImageInt(*bottom, client_area_bounds.x(), client_area_bottom, client_area_bounds.width(), bottom_right->height()); canvas->DrawBitmapInt(*bottom_left, client_area_bounds.x() - bottom_left->width(), client_area_bottom); // Left. canvas->TileImageInt(*left, client_area_bounds.x() - left->width(), client_area_top, left->width(), client_area_height); // Draw the toolbar color to fill in the edges. canvas->DrawRectInt(ResourceBundle::toolbar_color, client_area_bounds.x() - 1, client_area_top - 1, client_area_bounds.width() + 1, client_area_bottom - client_area_top + 1); } void CustomFrameView::LayoutWindowControls() { close_button_->SetImageAlignment(ImageButton::ALIGN_LEFT, ImageButton::ALIGN_BOTTOM); int caption_y = CaptionButtonY(); bool is_maximized = frame_->IsMaximized(); // There should always be the same number of non-shadow pixels visible to the // side of the caption buttons. In maximized mode we extend the rightmost // button to the screen corner to obey Fitts' Law. int right_extra_width = is_maximized ? (kFrameBorderThickness - kFrameShadowThickness) : 0; gfx::Size close_button_size = close_button_->GetPreferredSize(); close_button_->SetBounds(width() - FrameBorderThickness() - right_extra_width - close_button_size.width(), caption_y, close_button_size.width() + right_extra_width, close_button_size.height()); // When the window is restored, we show a maximized button; otherwise, we show // a restore button. bool is_restored = !is_maximized && !frame_->IsMinimized(); views::ImageButton* invisible_button = is_restored ? restore_button_ : maximize_button_; invisible_button->SetVisible(false); views::ImageButton* visible_button = is_restored ? maximize_button_ : restore_button_; FramePartBitmap normal_part, hot_part, pushed_part; if (should_show_minmax_buttons_) { visible_button->SetVisible(true); visible_button->SetImageAlignment(ImageButton::ALIGN_LEFT, ImageButton::ALIGN_BOTTOM); gfx::Size visible_button_size = visible_button->GetPreferredSize(); visible_button->SetBounds(close_button_->x() - visible_button_size.width(), caption_y, visible_button_size.width(), visible_button_size.height()); minimize_button_->SetVisible(true); minimize_button_->SetImageAlignment(ImageButton::ALIGN_LEFT, ImageButton::ALIGN_BOTTOM); gfx::Size minimize_button_size = minimize_button_->GetPreferredSize(); minimize_button_->SetBounds( visible_button->x() - minimize_button_size.width(), caption_y, minimize_button_size.width(), minimize_button_size.height()); normal_part = IDR_CLOSE; hot_part = IDR_CLOSE_H; pushed_part = IDR_CLOSE_P; } else { visible_button->SetVisible(false); minimize_button_->SetVisible(false); normal_part = IDR_CLOSE_SA; hot_part = IDR_CLOSE_SA_H; pushed_part = IDR_CLOSE_SA_P; } ResourceBundle& rb = ResourceBundle::GetSharedInstance(); close_button_->SetImage(CustomButton::BS_NORMAL, rb.GetBitmapNamed(normal_part)); close_button_->SetImage(CustomButton::BS_HOT, rb.GetBitmapNamed(hot_part)); close_button_->SetImage(CustomButton::BS_PUSHED, rb.GetBitmapNamed(pushed_part)); } void CustomFrameView::LayoutTitleBar() { // The window title is based on the calculated icon position, even when there // is no icon. gfx::Rect icon_bounds(IconBounds()); views::WindowDelegate* d = frame_->GetDelegate(); if (d->ShouldShowWindowIcon()) window_icon_->SetBounds(icon_bounds); // Size the title. int title_x = d->ShouldShowWindowIcon() ? icon_bounds.right() + kIconTitleSpacing : icon_bounds.x(); int title_height = title_font_->height(); // We bias the title position so that when the difference between the icon and // title heights is odd, the extra pixel of the title is above the vertical // midline rather than below. This compensates for how the icon is already // biased downwards (see IconBounds()) and helps prevent descenders on the // title from overlapping the 3D edge at the bottom of the titlebar. title_bounds_.SetRect(title_x, icon_bounds.y() + ((icon_bounds.height() - title_height - 1) / 2), std::max(0, (should_show_minmax_buttons_ ? minimize_button_->x() : close_button_->x()) - kTitleCaptionSpacing - title_x), title_height); } void CustomFrameView::LayoutClientView() { int top_height = NonClientTopBorderHeight(); int border_thickness = NonClientBorderThickness(); client_view_bounds_.SetRect(border_thickness, top_height, std::max(0, width() - (2 * border_thickness)), std::max(0, height() - top_height - border_thickness)); } // static void CustomFrameView::InitClass() { static bool initialized = false; if (!initialized) { #if defined(OS_WIN) title_font_ = new gfx::Font(win_util::GetWindowTitleFont()); #elif defined(OS_LINUX) // TODO(ben): need to resolve what font this is. title_font_ = new gfx::Font(); #endif initialized = true; } } } // namespace views