Initial import.

1 files changed, 135 insertions, 0 deletions

diff --git a/chromium/ui/views/background.cc b/chromium/ui/views/background.cc
new file mode 100644
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+++ b/chromium/ui/views/background.cc
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+// Copyright (c) 2012 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 "ui/views/background.h"
+
+#include "base/logging.h"
+#include "skia/ext/skia_utils_win.h"
+#include "third_party/skia/include/core/SkPaint.h"
+#include "ui/gfx/canvas.h"
+#include "ui/gfx/color_utils.h"
+#include "ui/views/painter.h"
+#include "ui/views/view.h"
+
+namespace views {
+
+// SolidBackground is a trivial Background implementation that fills the
+// background in a solid color.
+class SolidBackground : public Background {
+ public:
+  explicit SolidBackground(SkColor color) {
+    SetNativeControlColor(color);
+  }
+
+  virtual void Paint(gfx::Canvas* canvas, View* view) const OVERRIDE {
+    // Fill the background. Note that we don't constrain to the bounds as
+    // canvas is already clipped for us.
+    canvas->DrawColor(get_color());
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(SolidBackground);
+};
+
+class BackgroundPainter : public Background {
+ public:
+  BackgroundPainter(bool owns_painter, Painter* painter)
+      : owns_painter_(owns_painter), painter_(painter) {
+    DCHECK(painter);
+  }
+
+  virtual ~BackgroundPainter() {
+    if (owns_painter_)
+      delete painter_;
+  }
+
+
+  virtual void Paint(gfx::Canvas* canvas, View* view) const OVERRIDE {
+    Painter::PaintPainterAt(canvas, painter_, view->GetLocalBounds());
+  }
+
+ private:
+  bool owns_painter_;
+  Painter* painter_;
+
+  DISALLOW_COPY_AND_ASSIGN(BackgroundPainter);
+};
+
+Background::Background()
+    : color_(SK_ColorWHITE)
+#if defined(OS_WIN)
+    , native_control_brush_(NULL)
+#endif
+{
+}
+
+Background::~Background() {
+#if defined(OS_WIN)
+  DeleteObject(native_control_brush_);
+#endif
+}
+
+void Background::SetNativeControlColor(SkColor color) {
+  color_ = color;
+#if defined(OS_WIN)
+  DeleteObject(native_control_brush_);
+  native_control_brush_ = NULL;
+#endif
+}
+
+#if defined(OS_WIN)
+HBRUSH Background::GetNativeControlBrush() const {
+  if (!native_control_brush_)
+    native_control_brush_ = CreateSolidBrush(skia::SkColorToCOLORREF(color_));
+  return native_control_brush_;
+}
+#endif
+
+//static
+Background* Background::CreateSolidBackground(SkColor color) {
+  return new SolidBackground(color);
+}
+
+//static
+Background* Background::CreateStandardPanelBackground() {
+  // TODO(beng): Should be in NativeTheme.
+#if defined(USE_AURA)
+  return CreateSolidBackground(SK_ColorWHITE);
+#else
+  return CreateVerticalGradientBackground(SkColorSetRGB(246, 250, 255),
+                                          SkColorSetRGB(219, 235, 255));
+#endif
+}
+
+//static
+Background* Background::CreateVerticalGradientBackground(SkColor color1,
+                                                         SkColor color2) {
+  Background* background = CreateBackgroundPainter(
+      true, Painter::CreateVerticalGradient(color1, color2));
+  background->SetNativeControlColor(
+      color_utils::AlphaBlend(color1, color2, 128));
+
+  return background;
+}
+
+//static
+Background* Background::CreateVerticalMultiColorGradientBackground(
+    SkColor* colors,
+    SkScalar* pos,
+    size_t count) {
+  Background* background = CreateBackgroundPainter(
+      true, Painter::CreateVerticalMultiColorGradient(colors, pos, count));
+  background->SetNativeControlColor(
+      color_utils::AlphaBlend(colors[0], colors[count-1], 128));
+
+  return background;
+}
+
+//static
+Background* Background::CreateBackgroundPainter(bool owns_painter,
+                                                Painter* painter) {
+  return new BackgroundPainter(owns_painter, painter);
+}
+
+}  // namespace views