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Diffstat (limited to 'chrome/views/background.cc')
-rw-r--r-- | chrome/views/background.cc | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/chrome/views/background.cc b/chrome/views/background.cc new file mode 100644 index 0000000..ba80361 --- /dev/null +++ b/chrome/views/background.cc @@ -0,0 +1,128 @@ +// Copyright 2008, Google Inc. +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +#include "chrome/common/gfx/chrome_canvas.h" +#include "chrome/views/background.h" +#include "chrome/views/painter.h" +#include "chrome/views/view.h" +#include "skia/include/SkPaint.h" +#include "base/gfx/skia_utils.h" + +namespace ChromeViews { + +// SolidBackground is a trivial Background implementation that fills the +// background in a solid color. +class SolidBackground : public Background { + public: + explicit SolidBackground(const SkColor& color) : + color_(color) { + SetNativeControlColor(color_); + } + + void Paint(ChromeCanvas* canvas, View* view) const { + // Fill the background. Note that we don't constrain to the bounds as + // canvas is already clipped for us. + canvas->drawColor(color_); + } + + private: + const SkColor color_; + + DISALLOW_EVIL_CONSTRUCTORS(SolidBackground); +}; + +class BackgroundPainter : public ChromeViews::Background { + public: + BackgroundPainter(bool owns_painter, Painter* painter) + : owns_painter_(owns_painter), painter_(painter) { + DCHECK(painter); + } + + virtual ~BackgroundPainter() { + if (owns_painter_) + delete painter_; + } + + + void Paint(ChromeCanvas* canvas, View* view) const { + Painter::PaintPainterAt(0, 0, view->GetWidth(), view->GetHeight(), canvas, + painter_); + } + + private: + bool owns_painter_; + Painter* painter_; + + DISALLOW_EVIL_CONSTRUCTORS(BackgroundPainter); +}; + +Background::Background() : native_control_brush_(NULL) { +} + +Background::~Background() { + DeleteObject(native_control_brush_); +} + +void Background::SetNativeControlColor(SkColor color) { + DeleteObject(native_control_brush_); + native_control_brush_ = CreateSolidBrush(gfx::SkColorToCOLORREF(color)); +} + +//static +Background* Background::CreateSolidBackground(const SkColor& color) { + return new SolidBackground(color); +} + +//static +Background* Background::CreateStandardPanelBackground() { + return CreateVerticalGradientBackground(SkColorSetRGB(246, 250, 255), + SkColorSetRGB(219, 235, 255)); +} + +//static +Background* Background::CreateVerticalGradientBackground( + const SkColor& color1, const SkColor& color2) { + Background *background = + CreateBackgroundPainter(true, Painter::CreateVerticalGradient(color1, + color2)); + background->SetNativeControlColor( // 50% blend of colors 1 & 2 + SkColorSetRGB((SkColorGetR(color1) + SkColorGetR(color2)) / 2, + (SkColorGetG(color1) + SkColorGetG(color2)) / 2, + (SkColorGetB(color1) + SkColorGetB(color2)) / 2)); + + return background; +} + +//static +Background* Background::CreateBackgroundPainter(bool owns_painter, + Painter* painter) { + return new BackgroundPainter(owns_painter, painter); +} + +} |