This source file includes following definitions.
- scale_factor_
- PaintToBackingStore
- ScrollBackingStore
- Clear
#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 {
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);
}
}