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      1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "content/browser/web_contents/aura/image_window_delegate.h"
      6 
      7 #include "ui/base/cursor/cursor.h"
      8 #include "ui/base/hit_test.h"
      9 #include "ui/compositor/compositor.h"
     10 #include "ui/gfx/canvas.h"
     11 #include "ui/gfx/image/image.h"
     12 #include "ui/gfx/image/image_skia.h"
     13 #include "ui/gfx/rect.h"
     14 #include "ui/gfx/size.h"
     15 
     16 namespace content {
     17 
     18 ImageWindowDelegate::ImageWindowDelegate()
     19     : size_mismatch_(false) {
     20 }
     21 
     22 ImageWindowDelegate::~ImageWindowDelegate() {
     23 }
     24 
     25 void ImageWindowDelegate::SetImage(const gfx::Image& image) {
     26   image_ = image;
     27   if (!window_size_.IsEmpty() && !image_.IsEmpty())
     28     size_mismatch_ = window_size_ != image_.AsImageSkia().size();
     29 }
     30 
     31 gfx::Size ImageWindowDelegate::GetMinimumSize() const {
     32   return gfx::Size();
     33 }
     34 
     35 gfx::Size ImageWindowDelegate::GetMaximumSize() const {
     36   return gfx::Size();
     37 }
     38 
     39 void ImageWindowDelegate::OnBoundsChanged(const gfx::Rect& old_bounds,
     40                                           const gfx::Rect& new_bounds) {
     41   window_size_ = new_bounds.size();
     42   if (!image_.IsEmpty())
     43     size_mismatch_ = window_size_ != image_.AsImageSkia().size();
     44 }
     45 
     46 gfx::NativeCursor ImageWindowDelegate::GetCursor(const gfx::Point& point) {
     47   return gfx::kNullCursor;
     48 }
     49 
     50 int ImageWindowDelegate::GetNonClientComponent(const gfx::Point& point) const {
     51   return HTNOWHERE;
     52 }
     53 
     54 bool ImageWindowDelegate::ShouldDescendIntoChildForEventHandling(
     55     aura::Window* child,
     56     const gfx::Point& location) {
     57   return false;
     58 }
     59 
     60 bool ImageWindowDelegate::CanFocus() {
     61   return false;
     62 }
     63 
     64 void ImageWindowDelegate::OnCaptureLost() {
     65 }
     66 
     67 void ImageWindowDelegate::OnPaint(gfx::Canvas* canvas) {
     68   if (image_.IsEmpty()) {
     69     canvas->DrawColor(SK_ColorWHITE);
     70   } else {
     71     if (size_mismatch_)
     72       canvas->DrawColor(SK_ColorWHITE);
     73     canvas->DrawImageInt(image_.AsImageSkia(), 0, 0);
     74   }
     75 }
     76 
     77 void ImageWindowDelegate::OnDeviceScaleFactorChanged(float scale_factor) {
     78 }
     79 
     80 void ImageWindowDelegate::OnWindowDestroying(aura::Window* window) {
     81 }
     82 
     83 void ImageWindowDelegate::OnWindowDestroyed(aura::Window* window) {
     84   delete this;
     85 }
     86 
     87 void ImageWindowDelegate::OnWindowTargetVisibilityChanged(bool visible) {
     88 }
     89 
     90 bool ImageWindowDelegate::HasHitTestMask() const {
     91   return false;
     92 }
     93 
     94 void ImageWindowDelegate::GetHitTestMask(gfx::Path* mask) const {
     95 }
     96 
     97 }  // namespace content
     98