MacViews: Implement non-client frame view

chrome/browser/ui/views/frame/browser_non_client_frame_view_mac.mm

+// Copyright 2015 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/frame/browser_non_client_frame_view_mac.h"
+
+#include "chrome/browser/themes/theme_properties.h"
+#include "chrome/browser/ui/views/frame/browser_frame.h"
+#include "chrome/browser/ui/views/frame/browser_view.h"
+#include "chrome/browser/ui/views/frame/browser_view_layout.h"
+#include "grit/theme_resources.h"
+#include "ui/base/hit_test.h"
+#include "ui/base/theme_provider.h"
+#include "ui/gfx/canvas.h"
+
+namespace {
+
+// How far to inset the tabstrip from the sides of the window.
+const int kTabstripTopInset = 8;
+const int kTabstripLeftInset = 70;  // Make room for window control buttons.
+const int kTabstripRightInset = 0;
+
+}  // namespace
+
+///////////////////////////////////////////////////////////////////////////////
+// BrowserNonClientFrameViewMac, public:
+
+BrowserNonClientFrameViewMac::BrowserNonClientFrameViewMac(
+    BrowserFrame* frame, BrowserView* browser_view)
+    : BrowserNonClientFrameView(frame, browser_view) {
+}
+
+BrowserNonClientFrameViewMac::~BrowserNonClientFrameViewMac() {
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// BrowserNonClientFrameViewMac, BrowserNonClientFrameView implementation:
+
+gfx::Rect BrowserNonClientFrameViewMac::GetBoundsForTabStrip(
+    views::View* tabstrip) const {
+  DCHECK(tabstrip);
+  gfx::Rect bounds = gfx::Rect(0, kTabstripTopInset,
+                               width(), tabstrip->GetPreferredSize().height());
+  bounds.Inset(kTabstripLeftInset, 0, kTabstripRightInset, 0);
+  return bounds;
+}
+
+int BrowserNonClientFrameViewMac::GetTopInset() const {
+  return browser_view()->IsTabStripVisible() ? kTabstripTopInset : 0;
+}
+
+int BrowserNonClientFrameViewMac::GetThemeBackgroundXInset() const {
+  return 0;
+}
+
+void BrowserNonClientFrameViewMac::UpdateThrobber(bool running) {
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// BrowserNonClientFrameViewMac, views::NonClientFrameView implementation:
+
+gfx::Rect BrowserNonClientFrameViewMac::GetBoundsForClientView() const {
+  return bounds();
+}
+
+gfx::Rect BrowserNonClientFrameViewMac::GetWindowBoundsForClientBounds(
+    const gfx::Rect& client_bounds) const {
+  return client_bounds;
+}
+
+int BrowserNonClientFrameViewMac::NonClientHitTest(const gfx::Point& point) {
+  return frame()->client_view()->NonClientHitTest(point);
+}
+
+void BrowserNonClientFrameViewMac::GetWindowMask(const gfx::Size& size,
+                                                 gfx::Path* window_mask) {
+}
+
+void BrowserNonClientFrameViewMac::ResetWindowControls() {
+}
+
+void BrowserNonClientFrameViewMac::UpdateWindowIcon() {
+}
+
+void BrowserNonClientFrameViewMac::UpdateWindowTitle() {
+}
+
+void BrowserNonClientFrameViewMac::SizeConstraintsChanged() {
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// BrowserNonClientFrameViewMac, views::View implementation:
+
+gfx::Size BrowserNonClientFrameViewMac::GetMinimumSize() const {
+  return browser_view()->GetMinimumSize();
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// BrowserNonClientFrameViewMac, protected:
+
+// views::View:
+void BrowserNonClientFrameViewMac::OnPaint(gfx::Canvas* canvas) {
+  if (!browser_view()->IsBrowserTypeNormal())
+    return;
+
+  canvas->DrawColor(GetFrameColor());
+
+  if (!GetThemeProvider()->UsingSystemTheme())
+    PaintThemedFrame(canvas);
+
+  if (browser_view()->IsToolbarVisible())
+    PaintToolbarBackground(canvas);
+}
+
+// BrowserNonClientFrameView:
+void BrowserNonClientFrameViewMac::UpdateNewStyleAvatar() {
+  NOTIMPLEMENTED();
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// BrowserNonClientFrameViewMac, private:
+
+void BrowserNonClientFrameViewMac::PaintThemedFrame(gfx::Canvas* canvas) {
+  gfx::ImageSkia* image = GetFrameImage();
+  if (image)
+    canvas->TileImageInt(*image, 0, 0, width(), image->height());
+
+  gfx::ImageSkia* overlay = GetFrameOverlayImage();
+  if (overlay)
+    canvas->TileImageInt(*overlay, 0, 0, width(), overlay->height());
+}
+
+void BrowserNonClientFrameViewMac::PaintToolbarBackground(gfx::Canvas* canvas) {
+  gfx::Rect bounds(browser_view()->GetToolbarBounds());
+  if (bounds.IsEmpty())
+    return;
+
+  ui::ThemeProvider* tp = GetThemeProvider();
+  gfx::ImageSkia* border = tp->GetImageSkiaNamed(IDR_TOOLBAR_SHADE_TOP);
+  const int top_inset =
+      BrowserViewLayout::kToolbarTabStripVerticalOverlap - border->height();
+
+  const int x = bounds.x();
+  const int y = bounds.y() + top_inset;
+  const int w = bounds.width();
+  const int h = bounds.height() - top_inset;
+
+  // The tabstrip border image height is 2*scale pixels, but only the bottom 2
+  // pixels contain the actual border (the rest is transparent). We can't draw
+  // the toolbar image below this transparent upper area when scale > 1.
+  const int fill_y = y + canvas->image_scale() - 1;
+  const int fill_height = bounds.bottom() - fill_y;
+
+  // Draw the toolbar fill.
+  canvas->TileImageInt(*tp->GetImageSkiaNamed(IDR_THEME_TOOLBAR),
+                       x + GetThemeBackgroundXInset(), fill_y - GetTopInset(),
+                       x, fill_y, w, fill_height);
+
+  // Draw the tabstrip/toolbar separator.
+  canvas->TileImageInt(*border, 0, 0, x, y, w, border->height());
+
+  // Draw the content/toolbar separator.
+  canvas->FillRect(
+      gfx::Rect(x, y + h - kClientEdgeThickness, w, kClientEdgeThickness),
+      ThemeProperties::GetDefaultColor(
+          ThemeProperties::COLOR_TOOLBAR_SEPARATOR));
+}