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      1 // Copyright (c) 2011 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 <Carbon/Carbon.h>
      6 
      7 #include "build/build_config.h"
      8 
      9 #include <vector>
     10 
     11 #include "base/bind.h"
     12 #include "base/logging.h"
     13 #include "base/mac/mac_util.h"
     14 #include "content/browser/browser_child_process_host_impl.h"
     15 #include "content/browser/plugin_process_host.h"
     16 #include "content/public/browser/browser_thread.h"
     17 #include "content/public/browser/child_process_data.h"
     18 #include "ui/gfx/rect.h"
     19 
     20 namespace content {
     21 
     22 void PluginProcessHost::OnPluginShowWindow(uint32 window_id,
     23                                            gfx::Rect window_rect,
     24                                            bool modal) {
     25   plugin_visible_windows_set_.insert(window_id);
     26   if (modal)
     27     plugin_modal_windows_set_.insert(window_id);
     28   CGRect window_bounds = {
     29     { window_rect.x(), window_rect.y() },
     30     { window_rect.width(), window_rect.height() }
     31   };
     32   CGRect main_display_bounds = CGDisplayBounds(CGMainDisplayID());
     33   if (CGRectEqualToRect(window_bounds, main_display_bounds) &&
     34       (plugin_fullscreen_windows_set_.find(window_id) ==
     35        plugin_fullscreen_windows_set_.end())) {
     36     plugin_fullscreen_windows_set_.insert(window_id);
     37     // If the plugin has just shown a window that's the same dimensions as
     38     // the main display, hide the menubar so that it has the whole screen.
     39     // (but only if we haven't already seen this fullscreen window, since
     40     // otherwise our refcounting can get skewed).
     41     BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
     42                             base::Bind(base::mac::RequestFullScreen,
     43                                        base::mac::kFullScreenModeHideAll));
     44   }
     45 }
     46 
     47 // Must be called on the UI thread.
     48 // If plugin_pid is -1, the browser will be the active process on return,
     49 // otherwise that process will be given focus back before this function returns.
     50 static void ReleasePluginFullScreen(pid_t plugin_pid) {
     51   // Releasing full screen only works if we are the frontmost process; grab
     52   // focus, but give it back to the plugin process if requested.
     53   base::mac::ActivateProcess(base::GetCurrentProcId());
     54   base::mac::ReleaseFullScreen(base::mac::kFullScreenModeHideAll);
     55   if (plugin_pid != -1) {
     56     base::mac::ActivateProcess(plugin_pid);
     57   }
     58 }
     59 
     60 void PluginProcessHost::OnPluginHideWindow(uint32 window_id,
     61                                            gfx::Rect window_rect) {
     62   bool had_windows = !plugin_visible_windows_set_.empty();
     63   plugin_visible_windows_set_.erase(window_id);
     64   bool browser_needs_activation = had_windows &&
     65       plugin_visible_windows_set_.empty();
     66 
     67   plugin_modal_windows_set_.erase(window_id);
     68   if (plugin_fullscreen_windows_set_.find(window_id) !=
     69       plugin_fullscreen_windows_set_.end()) {
     70     plugin_fullscreen_windows_set_.erase(window_id);
     71     pid_t plugin_pid =
     72         browser_needs_activation ? -1 : process_->GetData().handle;
     73     browser_needs_activation = false;
     74     BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
     75                             base::Bind(ReleasePluginFullScreen, plugin_pid));
     76   }
     77 
     78   if (browser_needs_activation) {
     79     BrowserThread::PostTask(
     80         BrowserThread::UI, FROM_HERE,
     81         base::Bind(base::mac::ActivateProcess, base::GetCurrentProcId()));
     82   }
     83 }
     84 
     85 void PluginProcessHost::OnAppActivation() {
     86   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
     87 
     88   // If our plugin process has any modal windows up, we need to bring it forward
     89   // so that they act more like an in-process modal window would.
     90   if (!plugin_modal_windows_set_.empty()) {
     91     BrowserThread::PostTask(
     92         BrowserThread::UI, FROM_HERE,
     93         base::Bind(base::mac::ActivateProcess, process_->GetData().handle));
     94   }
     95 }
     96 
     97 void PluginProcessHost::OnPluginSetCursorVisibility(bool visible) {
     98   if (plugin_cursor_visible_ != visible) {
     99     plugin_cursor_visible_ = visible;
    100     BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
    101                             base::Bind(base::mac::SetCursorVisibility,
    102                                        visible));
    103   }
    104 }
    105 
    106 }  // namespace content
    107