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author | tfarina@chromium.org <tfarina@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2011-12-01 16:09:33 +0000 |
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committer | tfarina@chromium.org <tfarina@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | 2011-12-01 16:09:33 +0000 |
commit | 45647af87d1e7e5ed607c6fd82a1ac32a708a725 (patch) | |
tree | 258381d5b333c5749616d97c1fe3a6bc4db50e1d /ui/views/painter.cc | |
parent | ab91de22a8a7eef73958b0b4463de89bd7fdbd12 (diff) | |
download | chromium_src-45647af87d1e7e5ed607c6fd82a1ac32a708a725.zip chromium_src-45647af87d1e7e5ed607c6fd82a1ac32a708a725.tar.gz chromium_src-45647af87d1e7e5ed607c6fd82a1ac32a708a725.tar.bz2 |
views: Move the remaining file from views/ to ui/views/.
BUG=104039
R=ben@chromium.org
TBR=stevenjb@chromium.org
Review URL: http://codereview.chromium.org/8771006
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@112469 0039d316-1c4b-4281-b951-d872f2087c98
Diffstat (limited to 'ui/views/painter.cc')
-rw-r--r-- | ui/views/painter.cc | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/ui/views/painter.cc b/ui/views/painter.cc new file mode 100644 index 0000000..ef5cfbf --- /dev/null +++ b/ui/views/painter.cc @@ -0,0 +1,199 @@ +// Copyright (c) 2011 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/painter.h" + +#include "base/logging.h" +#include "third_party/skia/include/core/SkBitmap.h" +#include "third_party/skia/include/effects/SkGradientShader.h" +#include "ui/base/resource/resource_bundle.h" +#include "ui/gfx/canvas.h" +#include "ui/gfx/canvas_skia.h" +#include "ui/gfx/insets.h" +#include "ui/gfx/point.h" + +namespace views { + +namespace { + +class GradientPainter : public Painter { + public: + GradientPainter(bool horizontal, const SkColor& top, const SkColor& bottom) + : horizontal_(horizontal) { + colors_[0] = top; + colors_[1] = bottom; + } + + virtual ~GradientPainter() { + } + + void Paint(int w, int h, gfx::Canvas* canvas) { + SkPaint paint; + SkPoint p[2]; + p[0].set(SkIntToScalar(0), SkIntToScalar(0)); + if (horizontal_) + p[1].set(SkIntToScalar(w), SkIntToScalar(0)); + else + p[1].set(SkIntToScalar(0), SkIntToScalar(h)); + + SkShader* s = + SkGradientShader::CreateLinear(p, colors_, NULL, 2, + SkShader::kClamp_TileMode, NULL); + paint.setStyle(SkPaint::kFill_Style); + paint.setShader(s); + // Need to unref shader, otherwise never deleted. + s->unref(); + + canvas->GetSkCanvas()->drawRectCoords( + SkIntToScalar(0), SkIntToScalar(0), SkIntToScalar(w), SkIntToScalar(h), + paint); + } + + private: + bool horizontal_; + SkColor colors_[2]; + + DISALLOW_COPY_AND_ASSIGN(GradientPainter); +}; + + +class ImagePainter : public Painter { + public: + ImagePainter(const SkBitmap& image, + const gfx::Insets& insets, + bool paint_center) + : image_(image), + insets_(insets), + paint_center_(paint_center) { + DCHECK(image.width() > insets.width() && + image.height() > insets.height()); + } + + // Paints the images. + virtual void Paint(int w, int h, gfx::Canvas* canvas) { + if (w == image_.width() && h == image_.height()) { + // Early out if the size we're to render at equals the size of the image. + canvas->DrawBitmapInt(image_, 0, 0); + return; + } + // Upper left. + canvas->DrawBitmapInt(image_, 0, 0, insets_.left(), insets_.top(), + 0, 0, insets_.left(), insets_.top(), true); + // Top edge. + canvas->DrawBitmapInt( + image_, + insets_.left(), 0, image_.width() - insets_.width(), insets_.top(), + insets_.left(), 0, w - insets_.width(), insets_.top(), true); + // Upper right. + canvas->DrawBitmapInt( + image_, + image_.width() - insets_.right(), 0, insets_.right(), insets_.top(), + w - insets_.right(), 0, insets_.right(), insets_.top(), true); + // Right edge. + canvas->DrawBitmapInt( + image_, + image_.width() - insets_.right(), insets_.top(), + insets_.right(), image_.height() - insets_.height(), + w - insets_.right(), insets_.top(), insets_.right(), + h - insets_.height(), true); + // Bottom right. + canvas->DrawBitmapInt( + image_, + image_.width() - insets_.right(), image_.height() - insets_.bottom(), + insets_.right(), insets_.bottom(), + w - insets_.right(), h - insets_.bottom(), insets_.right(), + insets_.bottom(), true); + // Bottom edge. + canvas->DrawBitmapInt( + image_, + insets_.left(), image_.height() - insets_.bottom(), + image_.width() - insets_.width(), insets_.bottom(), + insets_.left(), h - insets_.bottom(), w - insets_.width(), + insets_.bottom(), true); + // Bottom left. + canvas->DrawBitmapInt( + image_, + 0, image_.height() - insets_.bottom(), insets_.left(), + insets_.bottom(), + 0, h - insets_.bottom(), insets_.left(), insets_.bottom(), true); + // Left. + canvas->DrawBitmapInt( + image_, + 0, insets_.top(), insets_.left(), image_.height() - insets_.height(), + 0, insets_.top(), insets_.left(), h - insets_.height(), true); + // Center. + if (paint_center_) { + canvas->DrawBitmapInt( + image_, + insets_.left(), insets_.top(), + image_.width() - insets_.width(), image_.height() - insets_.height(), + insets_.left(), insets_.top(), + w - insets_.width(), h - insets_.height(), true); + } + } + + private: + const SkBitmap image_; + const gfx::Insets insets_; + bool paint_center_; + + DISALLOW_COPY_AND_ASSIGN(ImagePainter); +}; + +} // namespace + +// static +void Painter::PaintPainterAt(int x, int y, int w, int h, + gfx::Canvas* canvas, Painter* painter) { + DCHECK(canvas && painter); + if (w < 0 || h < 0) + return; + canvas->Save(); + canvas->Translate(gfx::Point(x, y)); + painter->Paint(w, h, canvas); + canvas->Restore(); +} + +// static +Painter* Painter::CreateHorizontalGradient(SkColor c1, SkColor c2) { + return new GradientPainter(true, c1, c2); +} + +// static +Painter* Painter::CreateVerticalGradient(SkColor c1, SkColor c2) { + return new GradientPainter(false, c1, c2); +} + +// static +Painter* Painter::CreateImagePainter(const SkBitmap& image, + const gfx::Insets& insets, + bool paint_center) { + return new ImagePainter(image, insets, paint_center); +} + +HorizontalPainter::HorizontalPainter(const int image_resource_names[]) { + ResourceBundle& rb = ResourceBundle::GetSharedInstance(); + for (int i = 0; i < 3; ++i) + images_[i] = rb.GetBitmapNamed(image_resource_names[i]); + height_ = images_[LEFT]->height(); + DCHECK(images_[LEFT]->height() == images_[RIGHT]->height() && + images_[LEFT]->height() == images_[CENTER]->height()); +} + +void HorizontalPainter::Paint(int w, int h, gfx::Canvas* canvas) { + if (w < (images_[LEFT]->width() + images_[CENTER]->width() + + images_[RIGHT]->width())) { + // No room to paint. + return; + } + canvas->DrawBitmapInt(*images_[LEFT], 0, 0); + canvas->DrawBitmapInt(*images_[RIGHT], w - images_[RIGHT]->width(), 0); + canvas->TileImageInt(*images_[CENTER], + images_[LEFT]->width(), + 0, + w - images_[LEFT]->width() - images_[RIGHT]->width(), + height_); +} + +} // namespace views |