| // 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 "content/renderer/browser_plugin/browser_plugin_backing_store.h" |
| |
| #include "ui/gfx/canvas.h" |
| #include "ui/gfx/rect.h" |
| #include "ui/gfx/rect_conversions.h" |
| #include "ui/gfx/size_conversions.h" |
| #include "ui/gfx/vector2d_conversions.h" |
| #include "ui/surface/transport_dib.h" |
| |
| namespace content { |
| |
| // Max height and width for layers |
| static const int kMaxSize = 23170; |
| |
| BrowserPluginBackingStore::BrowserPluginBackingStore( |
| const gfx::Size& size, |
| float scale_factor) |
| : size_(size), |
| scale_factor_(scale_factor) { |
| gfx::Size pixel_size = gfx::ToFlooredSize(gfx::ScaleSize(size, scale_factor)); |
| bitmap_.setConfig(SkBitmap::kARGB_8888_Config, |
| pixel_size.width(), pixel_size.height()); |
| bitmap_.allocPixels(); |
| canvas_.reset(new SkCanvas(bitmap_)); |
| } |
| |
| BrowserPluginBackingStore::~BrowserPluginBackingStore() { |
| } |
| |
| void BrowserPluginBackingStore::PaintToBackingStore( |
| const gfx::Rect& bitmap_rect, |
| const std::vector<gfx::Rect>& copy_rects, |
| void* bitmap) { |
| if (bitmap_rect.IsEmpty()) |
| return; |
| |
| gfx::Rect pixel_bitmap_rect = gfx::ToFlooredRectDeprecated( |
| gfx::ScaleRect(bitmap_rect, scale_factor_)); |
| |
| const int width = pixel_bitmap_rect.width(); |
| const int height = pixel_bitmap_rect.height(); |
| |
| if (width <= 0 || width > kMaxSize || |
| height <= 0 || height > kMaxSize) |
| return; |
| |
| if (!bitmap) |
| return; |
| |
| SkPaint copy_paint; |
| copy_paint.setXfermodeMode(SkXfermode::kSrc_Mode); |
| |
| SkBitmap sk_bitmap; |
| sk_bitmap.setConfig(SkBitmap::kARGB_8888_Config, width, height); |
| sk_bitmap.setPixels(bitmap); |
| for (size_t i = 0; i < copy_rects.size(); i++) { |
| const gfx::Rect& pixel_copy_rect = gfx::ToEnclosingRect( |
| gfx::ScaleRect(copy_rects[i], scale_factor_)); |
| int x = pixel_copy_rect.x() - pixel_bitmap_rect.x(); |
| int y = pixel_copy_rect.y() - pixel_bitmap_rect.y(); |
| SkIRect srcrect = SkIRect::MakeXYWH(x, y, |
| pixel_copy_rect.width(), |
| pixel_copy_rect.height()); |
| |
| SkRect dstrect = SkRect::MakeXYWH( |
| SkIntToScalar(pixel_copy_rect.x()), |
| SkIntToScalar(pixel_copy_rect.y()), |
| SkIntToScalar(pixel_copy_rect.width()), |
| SkIntToScalar(pixel_copy_rect.height())); |
| canvas_.get()->drawBitmapRect(sk_bitmap, &srcrect, dstrect, ©_paint); |
| } |
| } |
| |
| void BrowserPluginBackingStore::ScrollBackingStore( |
| const gfx::Vector2d& delta, |
| const gfx::Rect& clip_rect, |
| const gfx::Size& view_size) { |
| gfx::Rect pixel_rect = gfx::ToEnclosingRect( |
| gfx::ScaleRect(clip_rect, scale_factor_)); |
| gfx::Vector2d pixel_delta = gfx::ToFlooredVector2d( |
| gfx::ScaleVector2d(delta, scale_factor_)); |
| |
| int x = std::min(pixel_rect.x(), pixel_rect.x() - pixel_delta.x()); |
| int y = std::min(pixel_rect.y(), pixel_rect.y() - pixel_delta.y()); |
| int w = pixel_rect.width() + abs(pixel_delta.x()); |
| int h = pixel_rect.height() + abs(pixel_delta.y()); |
| SkIRect rect = SkIRect::MakeXYWH(x, y, w, h); |
| bitmap_.scrollRect(&rect, pixel_delta.x(), pixel_delta.y()); |
| } |
| |
| void BrowserPluginBackingStore::Clear(SkColor clear_color) { |
| canvas_->clear(clear_color); |
| } |
| |
| } // namespace content |